I am writing this because 1) There are not many reports regarding this drug. 2) It may save people from making the same mistakes or taking it at all.
Here is some background first.
I began smoking weed, cigarettes and getting drunk at 12 years old. By 13 I was doing it more often and started buying my own, on a couple occasions I would take alot of paracetamol/ibuprophen just to get a little dizzy for kicks. At 14 I preferred to smoke alone but didn't make a point to avoid smoking with others, would drink more often, and started searching for something more. At 15 I started doing E and carried on doing it for some time (for a couple weeks at a time I would do it almost daily, it wore me out). Throughout that time I had experiences with Ketamine, 2C-i, 2C-e, pure MDMA, Nitrous, continued my use of mary-jane and alcohol, Cocaine, Morning Glory seeds, Mushrooms and Mephedrone. Poo.
At 15 I got kicked out of my house and still continued getting messed up whenever I could. Later I moved to another place and kicked everything and didn't go out for around 5 months, everything was tempting and since I'd no more money (I did, but not for drugs) I soon realised 'who my friends were'. The last time I'd done anything was on New Year's at a house party. MDMA/Pills some ketamine, weed and alcohol. After New Years' Mephedrone came about and I did that a few times but hated it. When it got illegalised I celebrated.
I recently began suffering from Anxiety attacks, and those can be quite full-on. I would still smoke weed while getting these attacks in an attempt to drown them out, but I knew it wasn't working. In the past I have suffered from intense depression since I was 10 to around 6 months ago. I feel much better now, but this account is about a terrible experience I had on some 5-Meo-DALT. 12/7/10
It was a Monday, and I'd agreed to meet some old friends of mine who I am still close to. At first we arranged to meet in town, go and buy some booze and weed and do it like we used to. Once I arrive in town I find that the plans have changed. And I was not keen on this change baring the fact my anxiety was still affecting me horribly.  So the plan was, we'd call the head shop in town and ask them to deliver some of their 5-Meo-DALT, I knew I hadn't seen many reports of it on Erowid so this made me feel uneasy to begin with, but it also looked harmless. (?!)

So that was £60 down the shitter, and you'll see why later.
Setting -
For the purpose of making this easier, I will call my friends X, E, S, O. We were sitting in my E's garage/shed, only 3 of us (X, E & I) were planning on doing this. S & O were just sitting and observing, having a social.  At around 9pm we decided it was that time, so I unloaded two of the 0.5g baggies onto my tin lid and used a credit card to cut two lines for X & E. In total they must have had 2 lines each.
I guess the first real mistake I'd made was not using any scales at all. I prepared a 'bomb' for myself out of rizla and just started dumping in the powder.  I guess I was used to making bombs for myself and others I didn't take into account this drug wasn't the type to just 'dump it in'. I also made them a bomb each (a little smaller than mine since they'd already had two lines.) All in all I have absolutely no idea how much was in the lines, or the bombs. My best estimation of my bomb would be around 40-50mg. So their bombs would have been 20-35mg. I think there was some left over on the lid, that they were saving for lines for a little later. Because of what happened next, I am just so unsure about how much we dosed.
For the record, I had barely slept the previous night (Insomniac) and had not eaten anything apart from one crumpet... with butter.
9:00pm - we drop and kick back smoke cigarettes.  He was definitely not ill. I was fidgeting quite a bit.
9:20pm - More fidgety and anxious about how I am feeling. I can't decipher what my emotions actually are or if these feelings are just synthetic.  I decide to go outside for a cigarette. I sit on the trampoline with S and we talk about how long it's been. But I am quite far from the conversation, if anything, I am just talking out of my arse just to talk, because my mind is darting everywhere and this seems like sturdy ground to be on. We carry on until we finish smoking, then go back inside. Walking feels strange, y'know that feeling when you come up on E, and everything feels light. A bit like that, but it felt drunk and sluggish at the same time. I had to put alot of effort into it without realising.
9:40pm - I can see that E has gone bright red in the face (he is ginger so I guess it makes it more noticeable.. but I was getting freaked out) and X's face has gone the sickest shade of yellow-green. He's chewing his gum and I can see his jaw muscles clench and.. and.. why are we doing this? This has become so stale. There is no point, I want to go back. I was getting really, really anxious at this point.
9:45pm - O turns to us and says 'guys I've never seen you react to a drug like this..' In an instant after O said this, I take this as a bad sign, and my heartbeat is in my ears, behind my eyes, in the back of my head, in my stomach. Everything tightened, everything was closing in, and I kinda flipped.   I knew it was ruined now, the attack had started.
9:55pm - X came outside with a cigarette, lit it up and passed it to me. He told me '--- you need to calm down, you'll be alright. I'm coming up too and it's a bit intense as well.' My reply was 'You're definitely not feeling what I'm feeling dude.' S bought me out a bottle of water and they all sat with me, trying to coax me out of my bad state. But nothing worked. I started feeling nauseous, and I could feel my anxiety levels rising faster and faster. My chest felt so tight and my stomach was pushing up into me.
'I'm gonna be sick'.
'Be sick on the grass.'
'Fuck the grass.'
10:10pm - I am vomiting so violently, and I am trying to breathe. My heartbeat is BANGING through me and my throat just keeps getting tighter, everything on my upper body feels tight, and my legs below feel like jelly. So I am crawling on the grass, my stomach pushing fluids up, while I am trying to get oxygen IN, and I have sick stuck all in my throat. I am choking and I am afraid. I try to sip my water but it barely goes halfway down my stomach before my mouth explodes with it.
10:20pm - I am feeling drained and the effects of the 5-Meo-DALT are really, really strong. The bushes around the garden have faces and claws and they're moving, alot of shadows and doing things to each other and it's an all-out war between myself and everything around me. In the past I have been able to keep my inner voice with me, even if very faint, all the time on substances. In this instance, I was badly trying to find it, and I have not experienced a worse feeling than not being able to find myself like THIS.
10:25pm - I am sitting on S, and puking on the grass between my legs. The easiest way to describe how I was feeling is to show a little conversation.

'No, you're gonna be okay, you're just having a bit of a bad time.'
'No.. no.. urgh.. no.. I don't know what world I'm in.'
'Do you know who you are?'
'I know who I am. But I am gonna die.'
The night was just a Salvador Dali painting I was stuck in, that garden had lost all it's positive vibe and I was just stuck there my body just spazming trying to get something out of itself. I do believe, if hadn't died from the chemical itself, I could've died from choking on myself.
I think it was almost 11pm, when E came to me and asked me if I would like some medical assistance. They went to call me an ambulance.  'Get up, we need to walk to the end of the road, so that the ambulance doesn't come too close to the house. Or E's mum will go skitz.' I knew what the ambulance was for, but it felt like it was in another world. Like it didn't concern me that much and I would just do it later. After 5 or 10 minutes I managed to get up. X had me by the arms and escorted me down the road. I was walking like a drunk, but with a surprising amount of control for the state I was in. The road was peaceful, and that, I'd say, was the only pleasant part of my entire night; my walk to the ambulance.
 At the time I wanted to punch them, but that thought subsided rather quickly as I thought these guys were very important to my health right then. I was dizzying and it took me minutes to respond to questions they were asking. Mostly because I didn't care about the questions.
They put me in, and wanted to pump my stomach. I told them I'd vomited and they were fine with that. I could tell them my name, my address, everything, I was totally on autopilot. I was just listening to myself. On the way to the hospital I thought I'd died twice in the ambulance. There were alot of beeping noises, and one of the two times in particular, one noise that was the loudest, stopped. I thought I had died, and everything intensified. I looked at the paramedic, when the noise stopped, he got up very quickly. I thought my heart had failed, I thought he was reacting like this because he had to get equipment to bring me back. In that instant, I saw his arm move, and there were at least 5 arms, my brain must've been taking 'frames' very slowly or something. Because I saw the path his arm had travelled.
'AM I DEAD?!'
'No.' He sounded bored.
Once we got to the hospital, they said they couldn't do anything for me, but watch me and see if I get better or worse. (My friends had given up the rest of the 5-MeO-DALT to the paramedics hoping it would help them. But it didn't.
Nurse: 'What is this?'
Para: 'I dont know anything about it. Says 'not for human consumption.'.. why would you take something that says that?'
To which I said PSSHSHSHSHHHH!!! and tried to ride it out.
X came to see me in the ward and he looked twitchy as fuck. The ceiling and the curtains around my bed had patterns and everything in that ward was the same, and I kept getting spells of utter confusion and the noises in that place made me feel terrified. The fact that they couldn't give me anything made me feel worse. On top of that, X decided after 5 minutes that he HAD to go because he was tripped out so badly just sitting there.
Eventually I felt ok enough to realise I wasn't going to die, and that I was bored of sitting in that bed. I'd gone out for a cigarette twice in that time, and the outside was alright. It was very quiet, and I think for a while I was just enjoying looking at things. But my anxiety would bring all these bad feelings back once I got back inside.
After a long time of them doing nothing, I decided to sign myself out and go home. It was 2am or 3am by that time. I still had mild/strong visuals, alot of morphing but that was ok for me, I enjoyed that part as it was alot less overwhelming than before. I got into my taxi, had some absurd conversation with the driver, and got to my room. It felt cold, and empty, and I felt shattered, confused, and afraid to be alone. I was afraid to sleep, I was afraid I had done damage to my organs. I didn't hear ANY results from the doctors so I didn't know anything.
My anxiety kept me awake till the morning, and getting sleep was difficult and scary. While lying awake in bed the stand-on light from my laptop illuminated my room, and I would see things shift, and if I zoned into them they would become more defined and take on the form of what I call a 'hallucination'. The pleasant part visual wise was geometrical patterns when I had my eyes closed. This was pretty much the end of my night.
But the aftermath from this night has changed me, not drastically but enough. I am afraid to touch chemicals now, only weed. That same week I went to Somerset for a week, and spent a few days wondering on and off, if I really was dead or not.
Writing this report has also been difficult, and I've had my heart beat faster and faster just thinking back to it. It will take me another while to get back to my base, and this was two months ago. Even though I turned out alive, I was still very lucky I had friends who responded to me like they did, and I owe them.
Sorry for the long report. I tried to put in as much detail. Putting the effects of what it did to me into words has proven to be stressing on the brain. Just a confusing, cold, dark rainy night, in a world you're not sure is your own anymore, wondering where the hell your inner voice has gone, if it's ever coming back, or if it's gone because you won't need it anymore..
I think I OD'd perhaps. (5ft'2 @ 50kg) it is likely.
If doing this, as always, go from the ground up. I hadn't slept, nor eaten, I was hasty and made bad decisions. RC's are what they are, mysterious and if in a bad situation, terrifying.
Experience Reports are the writings and opinions of the individual authors who submit them.
Some of the activities described are dangerous and/or illegal and none are recommended by Erowid.


— Watershed Brewing Co. (@watershedbrew) February 26, 2020
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#include <iostream>
#include <math.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include "polar_match.h"
#include "draw.h"
Defines | |
| #define | SQ(x) ((x)*(x)) |
| #define | INTERPOLATE_ICP |
Functions | |
| void | pm_scan_project (const PMScan *act, PM_TYPE *new_r, int *new_bad) |
| Performs scan projection. | |
| PM_TYPE | pm_orientation_search (const PMScan *ref, const PM_TYPE *new_r, const int *new_bad) |
| Performs one iteration of orientation alignment of current scan. | |
| PM_TYPE | pm_translation_estimation (const PMScan *ref, const PM_TYPE *new_r, const int *new_bad, PM_TYPE C, PM_TYPE *dx, PM_TYPE *dy) |
| Estimate the postion of the current scan with respect to a reference scan. | |
| double | pm_msec (void) |
| Returns thread runtime under Linux in milliseconds. | |
| PM_TYPE | norm_a (PM_TYPE a) |
| Normalize angle. | |
| void | pm_init (const char *filename, FILE **fin) |
| Initialises internal variables and opens a log file. | |
| int | pm_readScan (FILE *fin, PMScan *ls) |
| Reads one scan from file fin and stores it in ls. | |
| void | pm_plotScanAt (const PMScan *ls, PM_TYPE x, PM_TYPE y, PM_TYPE th, const char *col, double diameter, bool connect_lines) |
| Plots scan ls at robot/laser pose x, y, th. | |
| void | pm_plotScan (PMScan *ls, const char *col, double diameter, bool connect_lines) |
| Plots scan ls. | |
| void | pm_median_filter (PMScan *ls) |
| Filters the laser ranges with a median filter. | |
| void | pm_segment_scan (PMScan *ls) |
| Segments scanpoints into groups based on range discontinuities. | |
| void | pm_find_far_points (PMScan *ls) |
| Tags point further than a given distance PM_MAX_RANGE. | |
| void | pm_show_segmentation (const PMScan *ls) |
| Shows segmentation results by plotting segments with different colours. | |
| void | pm_preprocessScan (PMScan *ls) |
| Prepares a scan for scan matching. | |
| bool | pm_is_corridor (PMScan *act) |
| Guesses if a scan was taken on a corridor. | |
| PM_TYPE | pm_error_index (PMScan *lsr, PMScan *lsa) |
| Calculates an error index expressing the quality of a match. | |
| PM_TYPE | pm_error_index2 (PMScan *ref, PMScan *cur, int *associatedPoints) |
| More quickly calculates an error index expressing the quality of a match. | |
| PM_TYPE | pm_corridor_angle (PMScan *act) |
| Determines the orientation of a corridor. | |
| void | pm_cov_est (PM_TYPE err, double *c11, double *c12, double *c22, double *c33, bool corridor, PM_TYPE corr_angle) |
| Estimates the covariance matrix of a match. | |
| PM_TYPE | pm_psm (const PMScan *lsr, PMScan *lsa) |
| Match two laser scans using polar scan matching. | |
| PM_TYPE | point_line_distance (PM_TYPE x1, PM_TYPE y1, PM_TYPE x2, PM_TYPE y2, PM_TYPE x3, PM_TYPE y3, PM_TYPE *x, PM_TYPE *y) |
| Calculate the distance of a point from a line section. | |
| PM_TYPE | pm_icp (const PMScan *lsr, PMScan *lsa) |
| Matches two laser scans using the iterative closest point method. | |
| void | pm_save_scan (PMScan *act, const char *filename) |
| Saves scan in a text file. | |
| void | pm_plotScan4Thesis (PMScan *lsr, PMScan *lsa) |
| Plots current and reference scan in the way scans appeared in my thesis. | |
| void | pm_plotTime4Thesis (PM_TYPE xt, PM_TYPE yt, PM_TYPE tht, int *iter, double *time) |
| Generates a convergence speed plot from previously saved result. | |
| void | pm_take_simulated_scan (const PM_TYPE xl, const PM_TYPE yl, const PM_TYPE thl, PMScan *ls, PM_TYPE wallDistLeft=150.0, PM_TYPE wallDistFront=200.0) |
| Takes a scan in a simulated room. | |
| void | pm_unit_test (int matching_alg, bool interactive) |
| Performs unit tests on scan matching. | |
Variables | |
| PM_TYPE | pm_fi [PM_L_POINTS] |
| Contains precomputed range bearings. | |
| PM_TYPE | pm_si [PM_L_POINTS] |
| Contains the sinus of each bearing. | |
| PM_TYPE | pm_co [PM_L_POINTS] |
| Contains the cosinus of each bearing. | |
| const PM_TYPE | PM_D2R = M_PI/180.0 |
| Conversion factor for converting degrees to radians. | |
| const PM_TYPE | PM_R2D = 180.0/M_PI |
| Conversion factor for converting radians to degrees. | |
| const PM_TYPE | PM_FI_MIN = M_PI/2.0 - PM_FOV*PM_D2R/2.0 |
| const PM_TYPE | PM_FI_MAX = M_PI/2.0 + PM_FOV*PM_D2R/2.0 |
| const PM_TYPE | PM_DFI = PM_FOV*PM_D2R/ ( PM_L_POINTS + 1.0 ) |
| #define INTERPOLATE_ICP |
| #define SQ | ( | x | ) | ((x)*(x)) |
| PM_TYPE norm_a | ( | PM_TYPE | a | ) | [inline] |
Normalize angle.
Normalize angle to be within [-pi,pi).
TODO: Make more efficient.
| a | The angle to be normalized. |
| PM_TYPE pm_corridor_angle | ( | PMScan * | act | ) |
Determines the orientation of a corridor.
TODO: NEEDS A REWRITE - TOO MESSY.
Assuming the scan was taken of a corridor, determines the orientation of the corridor by finding the maximum in a 180 degree wide angle histogram. The input into the histogram are angles of lines created by connecting neighbouring points.
Normally, this function is used on the reference scan and not the current scan.
| act | The scan of which oriention is to be determined. |
| void pm_cov_est | ( | PM_TYPE | err, | |
| double * | c11, | |||
| double * | c12, | |||
| double * | c22, | |||
| double * | c33, | |||
| bool | corridor, | |||
| PM_TYPE | corr_angle | |||
| ) |
Estimates the covariance matrix of a match.
Estimates elements (c11,c12,c22,c33) of a match result covariance matrix of the following structure:
[c11 c12 0.0]
[c12 c22 0.0]
[0.0 0.0 c33]
This function scales a base covariance matrix by an error index:
C = C0(PM_MIN_STD_XY, PM_MIN_STD_ORIENTATION) * (err - PM_MATCH_ERROR_OFFSET).
For corridors it scales and rotates a covariance matrix stretched in the direction of the corridor:
C = Rot(C0, corr_angle) * (err - PM_MATCH_ERROR_OFFSET).
If (err - PM_MATCH_ERROR_OFFSET) < 1 then C = C0.
| err | The error index of the match. | |
| c11,c12,c22,c33 | The estimated covariance matrix elements. | |
| corridor | If true, a special estimate with large along-corridor-error is used. | |
| corr_angle | The orientation of the corridor. Call pm_corridor_angle on the refernce scan to get this value. |
Calculates an error index expressing the quality of a match.
This function assesses how well is the current scan aligned with the reference scan. This function has to be called after a scan has been matched. The current scan's pose has to be expressed in the reference scan's coordinate system.
The current scan is compared to the reference scan and vice versa, then the maximum is taken. The comparisson is performed by calculating the average closest point distance. Far away points are ignored in the process. The number of non-far away points have to be larger than a threshold.
This function is computationally very expensive and takes a conservative guess on the match quality.
TODO: Improve the accuracy of the estimate. Speed it up. Perhaps should use the error output from scan matching instead. A proper test is necessary.
| lsr | The reference scan. | |
| lra | The current scan. |
More quickly calculates an error index expressing the quality of a match.
This function assesses how well is the current scan aligned with the reference scan. This function has to be called after a scan has been matched. The current scan's pose has to be expressed in the reference scan's coordinate system.
The current scan is compared to the reference scan by projecting the current scan where the reference scan was taken and calculating the average range residuals.
| lsr | The reference scan. | |
| lra | The current scan. |
| void pm_find_far_points | ( | PMScan * | ls | ) |
Tags point further than a given distance PM_MAX_RANGE.
Far away points get tagged as PM_RANGE.
| ls | The scan searched for far points. |
Matches two laser scans using the iterative closest point method.
Minimizes least square error of points through changing lsa->rx, lsa->ry, lsa->th by using ICP. It interpolates associated points. Only the best 80% of points are used in the pose calculation. Scan projection is done at each iteration.
For maintanence reasons changed scan projection to that of psm.
| void pm_init | ( | const char * | filename, | |
| FILE ** | fin | |||
| ) |
Initialises internal variables and opens a log file.
If filename is present, then it opens the scanfile and reads out the first line. The file pointer is then set to the corresponding file. Before performing any scan matching call this fuction once to initialize important global variables.
Upon failure an exception is thrown.
| filename | The name of the optional logfile to be used. | |
| fin | The optional opened file pointer is returned here. |
| bool pm_is_corridor | ( | PMScan * | act | ) |
Guesses if a scan was taken on a corridor.
Scan matching results on corridors are often inaccurate in the along-corridor direction. By detecting scans with a corridor-like appearance one can tailor a covariance matrix to incorporate the along-corridor uncertainty of the scan matching result.
Calculates the variance of angles between neighbouring Cartesian points as the "corridorness" criterion. On corridoors, the majority of vectors connecting neighbouring points are aligned along one line. Thus corridors generate a sharp peak in an angle histogram.
To solve the problem caused at the 180-0 degree transition point the calculations are repeated after a 30 degree shift. This is a hack which can be fixed easily.
The scan is assumed be pre-processed (segmentation and median filtering).
An exeption is thrown if there is less than 1 valid point.
TODO: Remove the double calculation of the variance.
| act | The scan which is examined for being corridor-like. |
| void pm_median_filter | ( | PMScan * | ls | ) |
Filters the laser ranges with a median filter.
The job of this median filter is to remove chair and table legs which are likely to change position with time.
The median filter helps to get rid of spurious data. If the median filter's window is 5, then 3 points need be close to each other to surrive the filtering. Chair legs taking 1 or 2 range readings will be removed.
Do not use this function when fitting lines to laser scans!
Median filter will round up corners.
x,y coordinates of points are not upadted.
| ls | Laser scan to be filtered. |
| double pm_msec | ( | void | ) |
Returns thread runtime under Linux in milliseconds.
| PM_TYPE pm_orientation_search | ( | const PMScan * | ref, | |
| const PM_TYPE * | new_r, | |||
| const int * | new_bad | |||
| ) |
Performs one iteration of orientation alignment of current scan.
Function estimating the orientation of the current scan represented with range readings new_r tagged with flags new_bad with respect to the reference scan ref.
This function exploits that if the current and reference scan are taken at the same position, an orientation change of the current scan results in a left or right shift of the scan ranges.
This function estimates the orientation by finding that shift which minimizes the difference between the current and ref. scan. The orientation estimate is then refined using interpolation by fitting a parabole to the maximum and its neighbours and finding the maximum.
| ref | The reference scan. | |
| new_r | The interpolated ranges of the current scan. | |
| new_bad | The tags corresponding to the new_r. |
TODO: speed up by unrolling the loop, replace if with multiplication with 0 or 1/ use sse2 instructions...
TODO: Find out when is it useful to check if delta < PM_MAX_ERROR - why only for the UTM...
| void pm_plotScan | ( | PMScan * | ls, | |
| const char * | col, | |||
| double | diameter, | |||
| bool | connect_lines | |||
| ) |
Plots scan ls.
The scan is shifted by PM_LASER_Y.
| ls | The laser scan to be plotted at the scan's pose. | |
| col | The colour of the scan as "red", "green"... See dr_COLORS for more. | |
| diameter | [cm] The drawn diameter of the measured points. | |
| connect_lines | If true, measured points are connected with lines. |
Plots current and reference scan in the way scans appeared in my thesis.
| lsr | Reference scan. | |
| lsa | Current scan. |
| void pm_plotScanAt | ( | const PMScan * | ls, | |
| PM_TYPE | x, | |||
| PM_TYPE | y, | |||
| PM_TYPE | th, | |||
| const char * | col, | |||
| double | diameter, | |||
| bool | connect_lines | |||
| ) |
Plots scan ls at robot/laser pose x, y, th.
The scan is shifted by PM_LASER_Y.
| ls | The laser scan to be plotted. The scan's pose is ignored. | |
| x | The X coordinate of the pose where the scan should be drawn. | |
| y | The Y coordinate of the pose where the scan should be drawn. | |
| th | The orientation coordinate of the pose where the scan should be drawn. | |
| col | The colour of the scan as "red", "green"... See dr_COLORS for more. | |
| diameter | [cm] The drawn diameter of the measured points. | |
| connect_lines | If true, measured point are connected with lines. |
| void pm_plotTime4Thesis | ( | PM_TYPE | xt, | |
| PM_TYPE | yt, | |||
| PM_TYPE | tht, | |||
| int * | iter, | |||
| double * | time | |||
| ) |
Generates a convergence speed plot from previously saved result.
If you want to see the convergence speed, then uncomment the definition of PM_GENERATE_RESULTS, recompile, match a scan and run this function.
Only works if PM_GENERATE_RESULTS was enabled in the previous match as only then are results saved in a file which is read here.
| xt | The true X coordinate where the solution should converge. | |
| yt | The true Y coordinate where the solution should converge. | |
| tht | [degrees] The true orientation where the solution should converge. |
| void pm_preprocessScan | ( | PMScan * | ls | ) |
Prepares a scan for scan matching.
Filters the scan using median filter, finds far away points and segments the scan.
| ls | The scan to be preprocessed. |
Match two laser scans using polar scan matching.
Minimizes the sum of square range residuals through changing lsa->rx, lsa->ry, lsa->th. The error is minimized by iterating a translation estimation step followed by an orientation search step.
PSM was not explicitly designed for laser scan matching based odometry where scans with small pose difference are matched with each other without any prior pose information. However when using PSM for this purpose, reduce the values of PM_MAX_ERROR, PM_WEIGHTING_FACTOR to reflect the small inter-scan motion. Also by reducing the value of PM_STOP_COND, larger matching accuracy can be achieved. The currently implemented error estimation functions are not useful for laser odometry error estimation.
Limitations: due to the nature of the association rule divergence in a slow rate may be experienced in rooms where there are not many features to constrain the solution in all directions. This can occur for examples in corridor-like environments including rooms where the room directly in front of the laser is outside of the range of the laser range finder.
| lsr | The reference scan. | |
| lra | The current scan. |
| int pm_readScan | ( | FILE * | fin, | |
| PMScan * | ls | |||
| ) |
Reads one scan from file fin and stores it in ls.
Assumed data format:
time[s] x[m] y[m] theta[rad]
r0[cm]
r1[cm]
.
.
.
| fin | Pointer to the file opened with pm_init(). | |
| ls | The read laser scan is returned here. |
| void pm_save_scan | ( | PMScan * | act, | |
| const char * | filename | |||
| ) |
Saves scan in a text file.
Saves the scan in the format of:
range[0] bad[0] segment[0]
range[1] bad[1] segment[1]
...
The aim is to enable quick scan loading in Octave using the "scan=load(filename)"; command
| act | The scan to be saved. | |
| filenam | The name of the file the scan is saved under. |
| void pm_scan_project | ( | const PMScan * | act, | |
| PM_TYPE * | new_r, | |||
| int * | new_bad | |||
| ) |
Performs scan projection.
This function enables the comparisson of two scans. It projects the current (active) scan act into the reference scans ref coordinate frame, using the current scan's pose. As the reference scan is assumed to be at the origin, its coordinates don't need to be passed along. Returns in new_r the interpolated range readinds r at the reference scan's measurement bearings. Returns in new_bad bad flags of the interpolated range readings, where occluded readings are tagged.
| act | The current scan. | |
| new_r | Array of the projected range readings (has to have the correct size). | |
| new_bad | Information about the validity of the interpolated range readings is returned here. |
TODO: replace this hack with proper fix where we don't loose points.
TODO: Uncomment this? (or leave it as it is a local scan matching approach anyway)
| void pm_segment_scan | ( | PMScan * | ls | ) |
Segments scanpoints into groups based on range discontinuities.
By segmenting scans into groups of disconnected sets of points, one can prevent falsely interpolating points into the free space between disconnected objects during scan projection.
Segment number 0 is reserved to segments containing only 1 point.
Far away points (r > PM_MAX_RANGE), gaps between groups of points - divide segments. The gap between extrapolated point and current point has to be large as well to prevent corridor walls to be segmented into separate points.
| void pm_show_segmentation | ( | const PMScan * | ls | ) |
Shows segmentation results by plotting segments with different colours.
| ls | The scan to be plotted. |
| void pm_take_simulated_scan | ( | const PM_TYPE | xl, | |
| const PM_TYPE | yl, | |||
| const PM_TYPE | thl, | |||
| PMScan * | ls, | |||
| PM_TYPE | wallDistLeft = 150.0 , |
|||
| PM_TYPE | wallDistFront = 200.0 | |||
| ) |
Takes a scan in a simulated room.
The simulated room is just a rectangle.
| xl | X coordinate of where the scan is taken. | |
| yl | Y coordinate of where the scan is taken. | |
| thl | Orientation with which the scan is taken. | |
| ls | The laser range finder pose is read out from here, and the | |
| wallDistLeft | [cm] The distance of the left and right wall from the centre. Optional. | |
| wallDistFront | [cm] The distance of the front and back wall from the centre. Optional. |
| PM_TYPE pm_translation_estimation | ( | const PMScan * | ref, | |
| const PM_TYPE * | new_r, | |||
| const int * | new_bad, | |||
| PM_TYPE | C, | |||
| PM_TYPE * | dx, | |||
| PM_TYPE * | dy | |||
| ) |
Estimate the postion of the current scan with respect to a reference scan.
| ref | The reference scan. | |
| new_r | The interpolated ranges of the current scan. | |
| new_bad | The tags corresponding to the new_r. | |
| C | Weighting factor for range residuals. | |
| dx | Estimated position increment X coordinate is returned here. | |
| dy | Estimated position increment Y coordinate is returned here. |
| void pm_unit_test | ( | int | matching_alg, | |
| bool | interactive | |||
| ) |
Performs unit tests on scan matching.
It will assert when compiled in debug mode. Currently the test are very basic (too high level). Should add more tests with time.
| matching_alg | Specify the scan matching algorithm to be tested (PM_PSM, PM_ICP). | |
| interactive | If true, graphically display results. |
| PM_TYPE point_line_distance | ( | PM_TYPE | x1, | |
| PM_TYPE | y1, | |||
| PM_TYPE | x2, | |||
| PM_TYPE | y2, | |||
| PM_TYPE | x3, | |||
| PM_TYPE | y3, | |||
| PM_TYPE * | x, | |||
| PM_TYPE * | y | |||
| ) |
Calculate the distance of a point from a line section.
Calculates the distance of the point (x3,y3) from a line defined by (x1,y1) and (x2,y2). Returns the distance to the line or -1 if the projection of (x3,y3) falls outside the line segment defined by (x1,y1) and (x2,y2). The projection of (x3,y3) onto the line is also returned in x,y. This function is used in ICP.
| x1,y1 | The start point of the line section. | |
| x2,y2 | The end point of the line section. | |
| x3,y3 | The point of which distance it sought. | |
| x,y | (x3,y3) projected onto the line segment is returned here. |
| PM_TYPE pm_co[PM_L_POINTS] |
Contains the cosinus of each bearing.
| const PM_TYPE PM_D2R = M_PI/180.0 |
Conversion factor for converting degrees to radians.
| PM_TYPE pm_fi[PM_L_POINTS] |
Contains precomputed range bearings.
| const PM_TYPE PM_R2D = 180.0/M_PI |
Conversion factor for converting radians to degrees.
| PM_TYPE pm_si[PM_L_POINTS] |
Contains the sinus of each bearing.


Smoothie bowls are my go-to breakfast food but when I first started making them I struggled with knowing what to put in and how to make them etc. After making tons of smoothie bowls I have found the perfect combination to create the best smoothie bowl. This recipe is super easy, fast and delicious. Any of the ingerdients can be substituted for whatever you like, this is just what I prefer in my bowl! Hope you enjoy!


This is a form which demonstrates the use of simpleform. You can check
Thank you for contacting us we'll get back to you, as soon as we can.


Explicit Routing Services¶
OSCARS 1.0 supports the specification of circuits with prescribed route solutions. That is, the Path Computation Engine (PCE) does not necessarily need compute a route without help form the user. The user can in fact designate an Explicit Route Object (ERO) which serves as input to the PCE during pathfinding. The ERO may specify a complete route (in both the forward- and reverse-directions), a partial set of waypoints which must be reach along the route, or a set of devices and ports which must not be included in the route. This service enhances the user’s ability to predict certain qualities of the espected solution.
Complete Route Specification¶
The user may specify the complete ERO for either the forward- or reverse-direction. If a complete ERO is specified, the Topology Pruning Service will remove all other elements from the topology to ensure that only the expected solution may be computed by the PCE, as shown in the figure below (requested ERO elements with subscripts represent ports on a node that connect to the device matching the subscript label).
If the expected route is not reservable (due to insufficient bandwidth or VLAN availability), the circuit reservation fails.
The user may also specify Non-Palindromic forward- and reverse-direction routes such that they do not need to mirror one another. In this case, both EROs must be reservable or the circuit fails. If only the forward ERO is specified, the reverse-path will be computed as its Palindrome.
Note
If Non-Palindromic EROs are requested, then all Ethernet devices/ports/links used in the forward path, must be represented in the return path. Only MPLS devices/ports/links may differ in forward-/reverse-direction paths.
Service Details¶
Can be combined with:
- Asymmetric Bandwidth Capability Service
- Non-Palindromic Return Path Service
- Multipoint Routing Service
Relevant PCE Module(s)
Partial Route Specification¶
An ERO may alternatively be specified as a partial solution. For example, a user may desire that certain segments of the routing solution pass through specific waypoints. As such, the ERO may be requested as a specific list of network nodes (devices or ports) that must be included in the associated forward and return path. This list represents an in-order mandatory subset of the nodes along the final ERO returned by the PCE. A route is established between each pair of waypoints in the sequence.
All network elements not explicitly included in the Partial ERO are still candidates for inclusion in the final routing solution returned by the PCE. Consider requesting a partial ERO of simply the set of ports {A, Z}; the PCE would treat it identically to the Basic PCE Service, and the appropriate solution would traverse a good portion of the network in the above example. However, if even a single specified subpath cannot be computed due to resource availability restrictions, the circuit reservation fails.
Note
Unlike the Complete ERO specification described above, all Partial EROs are required to be palindromic.
Warning
Since each segment of the final route is computed individually, it’s possible that waypoints prescribed later in the path may be included in an earlier segment. OSCARS does not permit any cycles in its routing solutions, and if such a scenario were to occur, the Partial ERO would not be valid, and the reservation would fail.
“Blacklist” Avoidance Routing¶
In addition (or as an alternative) to providing nodes that must be included in the path as in the Complete and Partial ERO Specifications, the user may also find it desirable to be able to avoid a particular node or set of nodes comprising a section of the network topology. This desire is likely application-/user-specific. The user may specify a collection of devices and ports which they deem to be undesirable for the given circuit request. All of these “blacklisted” nodes, as well as the network links connected to included ports will be explicitly pruned from the network prior to pathfinding. If the remaining network components do not support a working route solution, the reservation fails. Since this ERO service is handled be the Topology Pruning Service, it can be combined with all other existing PCE services.
Can be combined with:
- Basic PCE Service
- Asymmetric Bandwidth Capability Service
- Non-Palindromic Return Path Service
- Multipoint Routing Service
- Complete Route Specification
- Partial Route Specification
- Complete Path Survivability
- MPLS-Layer Survivability
- K-Disjoint Path Survivability
Relevant Topology/PCE Service(s)


We are proud to provide, in-season, our own and locally grown: greens, scallions, radishes, asparagus, strawberries, blueberries, raspberries, cucumbers, tomatoes, corn, summer squashes, beans, lettuce, apples, pumpkins, gourds, cornstalks, and winter squash. We also offer produce that is not available locally to give you the best possible fresh selection.
Locally Produced
Our store is loaded with locally produced specialty foods including cheese, bacon, ice cream, soda, spice mixes, eggs, meats, honey, pesto, barbecue sauces, pickles and lots more. We also feature some crafts and souvenirs, and at the holidays prepare beautiful and “tasteful” gift baskets to please everyone on your list.
Baked Goods
We have delicious pies, jam, cookies, fudge, maple candies and other goodies, year ‘round! Our baked items sell out fast, so make sure to order in advance for your family reunions, weddings, birthday parties, or if you just find yourself craving something special! At Easter, Thanksgiving and Christmas time, we make pies ONLY TO ORDER. Contact us anytime for more info!
Meat
We raise pasture-raised beef and lamb right on the farm. We occasionally raise pigs and chickens, as well, so make sure to stop by and check out the freezers frequently. There is nothing like the taste of meats produced locally. We keep our prices competitive and the quality is outstanding.
Pick Your Own
The pick-your-own raspberries patch usually opens between July 1st and 10th, and the season runs through July and into early August. We offer free picking containers (we charge by the pint, not the pound), water, and bathrooms. Hours are 8:00 AM to 6:00 PM - weather permitting - call for daily conditions. Pick your own blueberries open in late July!
Hay
We produce close to a thousand bales of square bales of hay each year. We will deliver hay within 15 miles of the farm (additional fee), and usually have a few bales available at our store for your convenience. It is best to call and order hay before the season is over to guarantee availability.
Firewood
Dry firewood is available in the Fall by order, in quarter, half and full cords (deliveries, planned for September and October, are available for an additional fee). We usually have quarter cord amounts available at the store for pick up at your convenience, and small bundles for camping or home fire pits are available through the summer, fall and winter.
Snowplowing & Sanding
We offer residential and small commercial snowplowing and sanding after every snowstorm in Newport, Claremont and Guild, and are fully insured. Please call for an estimate any time of year.
Christmas Trees and Balsam Wreaths
Our own and locally grown (NH & VT) balsam, Fraser fir, and Korean fir trees are available the day after Thanksgiving until Christmas Eve.  We also make our own fresh-cut balsam wreaths in sizes from 10” diameter to 36”. Order early for wreath pick-up before or at Thanksgiving.
Syrup
We make our own maple syrup with a wood-fired evaporator, tapping just over 4,000 taps in the late winter-early spring. We have syrup, maple candy, maple sugar and maple cream available for sale at our store year ‘round. Contact us for more info about buying syrup wholesale for your own outlet or to get a quote for personalized maple syrup favors for a wedding or party!


Chest of Wisdom:
[A voice emanates from the chest]
I will teach you how to use the Wish Potion correctly. If you wish to become a ruler, you will meet the Devil himself...


Object-oriented computer programming language commonly used to create interactive effects within web browsers.
Symbols used to perform an operation. Most often these operations are arithmetic (addition, subtraction, etc), but not always.
Anything that can vary. JavaScript includes variables which hold the data value and it can be changed anytime.
Style guidelines for programming. They typically cover naming and declaration rules for variables and functions.
Block of code designed to perform a particular task. A JavaScript function is executed when "something" invokes it (calls it).
Actions that can be performed on objects. A JavaScript method is a property containing a function definition.
Values received by the function when it is invoked. Inside the function, the arguments (the parameters) behave as local variables.
Names listed in the function definition. Function arguments are the real values passed to (and received by) the function.
Stops the execution of a function and returns a value from that function.
Allows us to run multiple jQuery methods (on the same element) within a single statement.
JavaScript data type that represents the exact text of whatever is enclosed in the quotes.
One of two values: true or false.
Indicates that a variable has not been assigned a value, or not declared at all.
Property that represents not a Number
Tells JavaScript that the character (ex."") that comes right after it is not the end of the string, but just a character inside the string.
Method that displays an alert box with a specified message and an OK button.
Comments that can be used to explain JavaScript code, and to make it more readable or to prevent execution, when testing alternative code.
JavaScript library.
How the property can be accessed (is it readable?, is it writable?).
Values associated with a JavaScript object. Can usually be changed, added, and deleted, but some are read only.


Morales says he is not organizing demonstrations from Mexico
MEXICO CITY (Reuters) - Ousted Bolivian president Evo Morales said in an interview with Reuters on Friday that he was not organizing demonstrations from Mexico, where he has been given asylum.
Morales resigned under pressure and fled to Mexico earlier this week after protests and violence following an Oct. 20 election that was tarnished by widespread allegations of fraud.
Supporters of Morales have continued to agitate on his behalf with marches and skirmishes in the streets of the capital La Paz and nearby El Alto.


--- layout: post status: publish published: true title: Custom Controls in WPF author: display_name: Tomas Restrepo login: tomasr email<EMAIL_ADDRESS>url: http://winterdom.com/ author_login: tomasr author_email<EMAIL_ADDRESS>author_url: http://winterdom.com/ wordpress_id: 191 wordpress_url: http://winterdom.com/2006/04/customcontrolsinwpf date: '2006-04-25 21:53:03 +0000' date_gmt: '2006-04-25 21:53:03 +0000' categories: - ".NET" - WinFX - WPF tags: [] comments: - id: 145 author: Robin Davies author_email: '' author_url: '' date: '2006-06-02 09:03:47 +0000' date_gmt: '2006-06-02 09:03:47 +0000' content: | You raise an interesting point. I think it will be many years before the core paradigms of application development in WPF really stabilize. But I think the question of who owns presentation rendering in the immediate future is clear: it's not us programmers. Coming to the table with an extensive HTML background, I *get* the styles and templates. I really do. The key to understanding templates is, I think, that you have to understand that nobody's going to hand-code templates from scratch. And I think you need to understand great divide between the roles of graphic designers and programmers that's expected in WPF. The template system is intended to be skinning system. We as programmers are supposed to implement relatively presentationless XAML. Sure. We own details of how things lay out in the window; and the behaviours of elements in the UI. But it is graphics designers who will own the actual presentation, and the actual authoring of the skins. So how do templates get built? Using Microsoft Expression, of course. That's the tool that allows designers to skin the application without writing code. Reallistically, I think designers will use XAML templates much the same that CSS stylesheets are used, although XAML templates are far more powerful. Just like in HTML, designers will flip back and forth between the rendered and raw XAML to produce great looking templates. (Just like in HTML, I think designers will need to be XAML-literate, and able to dig in wiht a text editor where neccessary). Again, coming from an HTML background, I think the presentationless authoring of functional XAML as a separate activity from the skinning process is a great idea. Programmers produce crappy looking UIs. I don't know if you've seen the BBC demo from Mix '06 (part of Bill's keynote). There ain't no way that mere mortal programmers are going to produce UIs that look that good. That being said, sure, there are times when you need to get down and dirty and actually render content. But the secret in that case is to provide a rich set of presentation controls to our designers (foreground/background colors, fonts, at a minimum, maybe even wholescale elements that are rendered using complex graphics that have been built by a designer, and plugged in via XAML templates. ---
While reading Chris Sell's and Ian Griffith's Programming Windows
Presentation Foundation book, I ran across the following tidbit on chapter 9
on custom controls: "One of the main reasons for writing custom controls in
older user interface technologies is to modify the appereance of a control, but
as we've seen in earlier chapters, the content model and templates mean this is
often unnecessary."
From what little I've experienced of WPF, the whole templating mechanism
seems extremely powerful, particularly given the content model for UI Elements
and the layout mechanism. Certainly, very impressive things can be achieved this
way. That said, it does seem the whole templating mechanism can be just as
easily abused (just like everything else in every other technology). So, where
does the line get drawn between templating and creating new custom controls?
Obviously, the second option takes more work (or so it seems to me, at this
time), while the first can be more convenient.
Thing is, in my experience working with other smart-client technologies
(WinForms, MFC, Win32), I found myself creating custom controls not just because
it was the only possibility to affect behavior or custom draw a control (it
isn't), but because it really helped make the code more modular and mantainable
and make it self-contained (which helps reusability a lot, by the way). So, when
I look at the templating mechanism in WPF, I find myself thinking that, while
very cool and powerful, it could easily turn into a mantainance nightmare.
In other words, I find myself asking "How is this different from, say, handling
the Paint event for a child control in a Windows Forms and doing custom drawing
there?" (from a code estructure point of view). At least from my little
knowledge of WPF, I'd dread hundreds-of-lines XAML files with tens of
templates and resources, just as much as I'd dread the corresponding windows
forms code with hundreds of lines of embedded presentation, drawing and business
logic.
I've been pondering about this for a while, and would love to hear the
opinion of those of you that have been doing real-world WPF applications out
there on the topic of reusability, templates and custom controls on WPF. Please,
please convince me I'm wrong ;-)


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Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.
View GalleryLorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.
View GalleryGreat food! Menu is awesome. The foods are not only great but also in the right price. I'll highly recommend them:)
We are menu a little team of 7 members.Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.


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| PREV PACKAGE NEXT PACKAGE | FRAMES NO FRAMES |
| Interface Summary | |
|---|---|
| Cell | An interface for adding and retrieving the occupants of a grid cell. |
| Discrete2DSpace | Interface for all Discrete two dimensional spaces. |
| IMulti2DGrid | Interface for grids and tori whose cells can hold more than one object. |
| Neighborhooder | |
| Torus | Identity interface that indentifies all implementors as tori. |
| Class Summary | |
|---|---|
| AbsMulti2DGrid | Base class for grids whose cells can hold more that one occupant. |
| AbsMulti2DHexagonalGrid | Base class for hexagonal grids whose cells can hold more that one occupant. |
| AbsMulti2DHexagonalTorus | Base class for hexagonal torii whose cells can hold more that one occupant. |
| AbsMulti2DTorus | Base class for tori whose cells can hold more that one occupant. |
| AbstractNeighborhooder | |
| BagCell | A grid cell whose occupants are stored as if in a bag without order. |
| Diffuse2D | Discrete 2nd order approximation of 2d diffusion with evaporation. |
| Diffuse2DHexagonal | Discrete 2nd order approximation of 2d diffusion with evaporation on a hexagonal grid. |
| HexMultiNeighborhooder | |
| HexNeighborhooder | |
| MooreMultiNeighborhooder | |
| MooreNeighborhooder | |
| Multi2DGrid | A grid object that can hold more than one object in its cells. |
| Multi2DHexagonalGrid | A hexagonal grid object that can hold more than one object in its cells. |
| Multi2DHexagonalTorus | A torus object that can hold more than one object in its cells. |
| Multi2DTorus | A torus object that can hold more than one object in its cells. |
| Object2DGrid | A discrete 2 dimensional grid of objects, accessed by x and y coordinates. |
| Object2DHexagonalGrid | A discrete hexagonal grid of objects accessed by x and y coordinates. |
| Object2DHexagonalTorus | A discrete 2 dimensional hexagonal torus of objects, accessed by x and y coordinates. |
| Object2DTorus | A discrete 2 dimensional torus of objects, accessed by x and y coordinates. |
| ObjectLocation | A data structure holding an object and the x and y coordinates of that object. |
| OrderedCell | A grid cell whose occupants are stored in order of insertion. |
| OrderedMulti2DGrid | A grid object that can hold more than one object in its cells. |
| OrderedMulti2DHexagonalGrid | A hexagonal grid object that can hold more than one object in its cells. |
| OrderedMulti2DHexagonalTorus | A torus that can hold more than one object in its hexagonal cells. |
| OrderedMulti2DTorus | A torus that can hold more than one object in its cells. |
| RasterSpace | A class that represents a raster image as a space. |
| VectorSpace | A VectorSpace is a list-like container containing the objects "inhabiting" that space. |
| VNMultiNeighborhooder | |
| VNNeighborhooder |
|
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About Us
Here you will find a collection of small to medium brands
taking the opportunity to present their product on a national stage.
for store tourClick Here
Our Team
Mannam Tarun
Accounts head
working in smartkart for past 10years
<EMAIL_ADDRESS>Saksham Kapil
CEO and Founder
Belives in both quality and honesty
<EMAIL_ADDRESS>Vijay Reddy
Marketing Head
Intelligent and Intellectual
vijay@example.com


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Let loose the techie inside you and put onto paper [or screen, we don't judge!] the finest pieces of technology related blogs for the whole wide world to see! Join everyone else below and make your blog stand out above everyone else's!
Chic description of your AWESOME blog.


Bootstrap Form Builder
Your Form
Form Name
Drag & Drop components
Input
Select
Checkbox / Radio
File / Button
Generated Source
Text input
Supporting help text
Search input
Supporting help text
Prepended text
^_^
Supporting help text
Appended text
^_^
Supporting help text
Prepended checkbox
Supporting help text
Append checkbox
Supporting help text
Textarea
Select - Basic
Enter
Your
Options
Here!
Select - Multiple
Enter
Your
Options
Here!
Checkboxes
Option one
Option two
Radio buttons
Option one
Option two
Inline Checkboxes
1
2
3
Inline radios
1
2
3
File Button
Button
Button
By Adam Moore (
@minikomi
).
Source on (
Github
).


When you use a theme created by Start Bootstrap, you know that the theme will look great on any device, whether it's a phone, tablet, or desktop the page will behave responsively!
Newly improved, and full of great utility classes, Bootstrap 4 is leading the way in mobile responsive web development! All of the themes on Start Bootstrap are now using Bootstrap 4!
Landing Page is just HTML and CSS with a splash of SCSS for users who demand some deeper customization options. Out of the box, just add your content and images, and your new landing page will be ready to go!
"This is fantastic! Thanks so much guys!"
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Write a script that finds the greatest of given 5 variables.
First:
Second:
Third:
Fourth:
Fifth:
Find Greatest


| PostgreSQL 9.5.19 Documentation | |||
|---|---|---|---|
| Prev | Up | Appendix F. Additional Supplied Modules | Next |
The pg_prewarm module provides a convenient way to load relation data into either the operating system buffer cache or the PostgreSQL buffer cache.
pg_prewarm(regclass, mode text default 'buffer', fork text default 'main', first_block int8 default null, last_block int8 default null) RETURNS int8
The first argument is the relation to be prewarmed. The second argument is the prewarming method to be used, as further discussed below; the third is the relation fork to be prewarmed, usually main. The fourth argument is the first block number to prewarm (NULL is accepted as a synonym for zero). The fifth argument is the last block number to prewarm (NULL means prewarm through the last block in the relation). The return value is the number of blocks prewarmed.
There are three available prewarming methods. prefetch issues asynchronous prefetch requests to the operating system, if this is supported, or throws an error otherwise. read reads the requested range of blocks; unlike prefetch, this is synchronous and supported on all platforms and builds, but may be slower. buffer reads the requested range of blocks into the database buffer cache.
Note that with any of these methods, attempting to prewarm more blocks than can be cached — by the OS when using prefetch or read, or by PostgreSQL when using buffer — will likely result in lower-numbered blocks being evicted as higher numbered blocks are read in. Prewarmed data also enjoys no special protection from cache evictions, so it is possible that other system activity may evict the newly prewarmed blocks shortly after they are read; conversely, prewarming may also evict other data from cache. For these reasons, prewarming is typically most useful at startup, when caches are largely empty.
Robert Haas <rhaas@postgresql.org>


This website was created by Jamario Davis, Victor Gamble, and Jennifer Morales. We created this website as part of our front-end project for DigitalCrafts. All three of us love sports and food so that is how this idea came about.


@(title: String, description: String, nexttip: String, imgurl: String, detailurl: String)
@description


<mat-checkbox>
provides the same functionality as a native <input type="checkbox">
enhanced with Material Design styling and animations.
The checkbox label is provided as the content to the <mat-checkbox>
element. The label can be
positioned before or after the checkbox by setting the labelPosition
property to 'before'
or
'after'
.
If you don't want the label to appear next to the checkbox, you can use
aria-label
or
aria-labelledby
to
specify an appropriate label.
@angular/forms
<mat-checkbox>
is compatible with @angular/forms
and supports both FormsModule
and ReactiveFormsModule
.
<mat-checkbox>
supports an indeterminate
state, similar to the native <input type="checkbox">
.
While the indeterminate
property of the checkbox is true, it will render as indeterminate
regardless of the checked
value. Any interaction with the checkbox by a user (i.e., clicking) will
remove the indeterminate state.
When user clicks on the mat-checkbox
, the default behavior is toggle checked
value and set
indeterminate
to false
. Developers now are able to change the behavior by providing a new value
of MatCheckboxClickAction
to the checkbox. The possible values are:
noop
Do not change the checked
value or indeterminate
value. Developers have the power to
implement customized click actions.
check
Toggle checked
value of the checkbox, ignore indeterminate
value. If the
checkbox is in indeterminate
state, the checkbox will display as an indeterminate
checkbox
regardless the checked
value.
####check-indeterminate
Default behavior of mat-checkbox
. Always set indeterminate
to false
when user click on the mat-checkbox
.
This matches the behavior of native <input type="checkbox">
.
The color of a <mat-checkbox>
can be changed by using the color
property. By default, checkboxes
use the theme's accent color. This can be changed to 'primary'
or 'warn'
.
The <mat-checkbox>
uses an internal <input type="checkbox">
to provide an accessible experience.
This internal checkbox receives focus and is automatically labelled by the text content of the
<mat-checkbox>
element.
Checkboxes without text or labels should be given a meaningful label via aria-label
or
aria-labelledby
.


These turtles were brought into the universe using my abstract art generator, and later genetically modified with Photoshop.


The State Cartographer's Office's highly popular Public Land Survey System (PLSS) application has always been a core piece of its line of public use applications. PLSS points are used as the very foundation of land surveying practices in the determination of property divisions and individuals from all walks of life have found a range of meaningful uses with the app in the past.
My involvment with the app in the past had been manipulating records through spatial databases using Postgres and SQL in order to maintain the most current PLSS records from each county as they were submitted. My involvement now includes assisting the development team in migrating this current application over into a new version that includes National Geodetic Survey (NGS), United States Geological Survey (USGS), and PLSS points all in a single map with easily accessible attributes for each point. The current live version is merely an "interim" interface that is being used to hold over ongoing demand until the new version is ready to go live.


Don't know what to do with that! It's a invalid json :(
Shitty Text
Readable Text
Unbeautify JSON
Beautify JSON


Recipe 5.12. Performing Frequent Membership Tests on a Sequence
Credit: Alex Martelli
Problem
You need to
perform frequent tests for membership in a sequence. The
O(n) behavior of repeated in
operators hurts performance, but you can't switch to
using just a dictionary or set instead of the
sequence, because you also need to keep the
sequence's order.
Solution
Say you need to append items to a list only if
they're not already in the list. One sound approach
to this task is the following function:
def addUnique(baseList, otherList):
auxDict = dict.fromkeys(baseList)
for item in otherList:
if item not in auxDict:
baseList.append(item)
auxDict[item] = None
If your code has to run only under Python 2.4, you can get exactly
the same effect with an auxiliary set rather than an auxiliary
dictionary.
Discussion
A simple (naive?) approach to this recipe's task
looks good:
def addUnique_simple(baseList, otherList):
for item in otherList:
if item not in baseList:
baseList.append(item)
and it may be sort of OK, if the lists are very
small.
However, the simple approach can be quite slow if the lists are not
small. When you check if item not in baseList,
Python can implement the in operator in only one
way: an internal loop over the elements of baseList,
ending with a result of true as soon as an element
compares equal to item, with a result of
False if the loop terminates without having found
any equality. On average, executing the
in-operator takes time proportional to
len(baseList). addUnique_simple
executes the in-operator
len(otherList) times, so, in all, it takes time
proportional to the product of the lengths of
the two lists.
In the addUnique function shown in the
"Solution", we first build the
auxiliary dictionary auxDict, a step that takes time
proportional to len(baseList). Then, the
in-operator inside the loop checks for membership
in a dicta step that makes all the
difference because checking for membership in a
dict takes roughly constant time, independent of
the number of items in the dict! So, the
for loop takes time proportional to
len(otherList), and the entire function takes time
proportional to the sum of the lengths of the
two lists.
The analysis of the running times should in fact go quite a bit
deeper, because the length of baseList is not
constant in addUnique_simple; baseList grows each
time an item is processed that was not already
there. But the gist of the (surprisingly complicated) analysis is not
very different from what this simplified version indicates. We can
check this by measuring. When each list holds 10 integers, with an
overlap of 50%, the simple version is about 30% slower than the one
shown in the "Solution", the kind
of slowdown that can normally be ignored. But with lists of 100
integers each, again with 50% overlap, the simple version is
twelve times slower than the one shown in the
"Solution"a level of
slowdown that can never be ignored, and it only gets worse if the
lists get really substantial.
Sometimes, you could obtain even better overall performance for your
program by permanently placing the auxiliary dict
alongside the sequence, encapsulating both into one object. However,
in this case, you must maintain the dict as the
sequence gets modified, to ensure it stays in sync with the
sequence's current membership. This maintenance task
is not trivial, and it can be architected in many different ways.
Here is one such way, which does the syncing "just
in time," rebuilding the auxiliary
dict when a membership test is required and the
dictionary is possibly out of sync with the list's
contents. Since it costs very little, the following class optimizes
the index method, as well as membership tests:
class list_with_aux_dict(list):
def _ _init_ _(self, iterable=( )):
list._ _init_ _(self, iterable)
self._dict_ok = False
def _rebuild_dict(self):
self._dict = { }
for i, item in enumerate(self):
if item not in self._dict:
self._dict[item] = i
self._dict_ok = True
def _ _contains_ _(self, item):
if not self._dict_ok:
self._rebuild_dict( )
return item in self._dict
def index(self, item):
if not self._dict_ok:
self._rebuild_dict( )
try: return self._dict[item]
except KeyError: raise ValueError
def _wrapMutatorMethod(methname):
_method = getattr(list, methname)
def wrapper(self, *args):
# Reset 'dictionary OK' flag, then delegate to the real mutator method
self._dict_ok = False
return _method(self, *args)
# in Python 2.4, only: wrapper._ _name_ _ = _method._ _name_ _
setattr(list_with_aux_dict, methname, wrapper)
for meth in 'setitem delitem setslice delslice iadd'.split( ):
_wrapMutatorMethod('_ _%s_ _' % meth)
for meth in 'append insert pop remove extend'.split( ):
_wrapMutatorMethod(meth)
del _wrapMethod # remove auxiliary function, not needed any more
The list_with_aux_dict class extends
list and delegates to it every method, except
_ _contains_ _ and index. Every
method that can modify list membership is wrapped in a closure that
resets a flag asserting that the auxiliary dictionary is OK.
Python's in-operator calls the
_ _contains_ _ method.
list_with_aux_dict's _
_contains_ _ method rebuilds the auxiliary dictionary,
unless the flag is set (when the flag is set, rebuilding is
unnecessary); the index method works the same way.
Instead of building and installing wrapping closures for all the
mutating methods of the list into the
list_with_aux_dict class with a helper function, as
the recipe does, we could write all the def
statements for the wrapper methods in the body of
list_with_aux_dict. However, the code for the class
as presented has the important advantage of minimizing boilerplate
(repetitious plumbing code that is boring and voluminous, and thus a
likely home for bugs). Python's strengths at
introspection and dynamic modification give you a choice: you can
build method wrappers, as this recipe does, in a smart and concise
way; or, you can choose to code the boilerplate anyway, if you prefer
to avoid what some would call the black magic of introspection and
dynamic modification of class objects.
The architecture of class list_with_aux_dict caters
well to a rather common pattern of use, where sequence-modifying
operations happen in bunches, followed by a period of time in which
the sequence is not modified, but several membership tests may be
performed. However, the addUnique_simple function
shown earlier would not get any performance benefit if argument
baseList was an instance of this
recipe's list_with_aux_dict rather
than a plain list: the function interleaves
membership tests and sequence modifications. Therefore, too many
rebuilds of the auxiliary dictionary for
list_with_aux_dict would impede the
function's performance. (Unless a typical case was
for a vast majority of the items of
otherList to be already contained in
baseList, so that very few modifications
occurred compared to the number of membership tests.)
An important requisite for any of these membership-test optimizations
is that the values in the sequence must be hashable (otherwise, of
course, they cannot be keys in a dict, nor items
in a set). For example, a list of tuples might be
subjected to this recipe's treatment, but for a list
of lists, the recipe as it stands is just not applicable.
See Also
The Library Reference and Python in
a Nutshell sections on sequence types and mapping
types.
|


Description:
{{company.description}}
Products:
Price: {{purchase.price}} Annual fee: {{purchase.annualFees[0].fee}} $$$ expires: {{purchase.annualFees[0].expires | date:'dd.MM.yyyy'}}


9 references to WriteStreamObject
System.Management.Automation (9)
engine\remoting\commands\ConnectPSSession.cs (3)
447
WriteStreamObject
((Action<Cmdlet>)streamObject);
791
WriteStreamObject
((Action<Cmdlet>)streamObject);
914
WriteStreamObject
((Action<Cmdlet>)streamObject);
engine\remoting\commands\DisconnectPSSession.cs (2)
294
WriteStreamObject
((Action<Cmdlet>)streamObject);
313
WriteStreamObject
((Action<Cmdlet>)streamObject);
engine\remoting\commands\getrunspacecommand.cs (1)
422
WriteStreamObject
((Action<Cmdlet>)streamObject);
engine\remoting\commands\newrunspacecommand.cs (2)
312
WriteStreamObject
((Action<Cmdlet>)streamObject);
334
WriteStreamObject
((Action<Cmdlet>)streamObject);
engine\remoting\commands\PushRunspaceCommand.cs (1)
508
WriteStreamObject
((Action<Cmdlet>)streamObject);


This example demonstrates the Range rendering capabilities of TreeMap Custom Element. It is configured with 10 colors, each corresponding to a certain range of values in the data.


To create a new modal use the .modal
class. A modal is composed of 3 primary sections, all of which are optional and can be used interchangeably -- .modal-header
, .modal-body
, and .modal-footer
. Looking for just the body and footer? It's as simple as not including .modal-header
in your modal.
.modal-header
.modal-body

 …

 …

 …


fontutils¶
A collection of useful functions for working with fonts.
-
align_to_grid
()[source]¶ Align all points of all glyphs in the font to a grid with size
(sizeX,sizeY)
.
-
auto_contour_direction
(font)[source]¶ Automatically set contour directions for all glyphs in the font.
-
auto_order_direction
(font)[source]¶ Automatically set contour order and direction for all glyphs in the font, in one go.
-
font_name
(family, style)[source]¶ Same as
full_name()
, butfamily
andstyle
names are separated by a hyphen instead of space.
-
full_name
(family, style)[source]¶ Build the full name of the font from
family
andstyle
names.Names are separated by a space. If the
style
is Regular, use only thefamily
name.
-
get_glyphs
(font)[source]¶ Return current glyph selection in the font as glyph names or
RGlyph
objects.
-
get_spacing_groups
(font)[source]¶ Return a dictionary containing the
left
andright
spacing groups in the font.
-
mark_composed_glyphs
(font, color='Orange', alpha=0.35)[source]¶ Mark all composed glyphs in the font.
-
parse_glyphs_groups
(names, groups)[source]¶ Parse a
gstring
and a groups dict into a list of glyph names.
-
print_selected_glyphs
(f, mode=0, sort=False)[source]¶ Print the selected glyphs to the output window.
-
rename_glyph
(font, old_name, new_name, overwrite=True, mark=True, verbose=True)[source]¶ Rename a glyph in a given font.
param RFont font: The font which contains the glyph to be renamed. param str old_name: The old glyph name to be replaced. param str new_name: The new glyph name to be used in place of the old one. param bool overwrite: Overwrite existing glyph with the new name. param bool mark: Mark the glyph after renaming. param bool verbose: Output informative messages to the console.


Protocol
MiddlewareReaderProtocol
public protocol MiddlewareReaderProtocol
A protocol to generalize MiddlewareReader. Unless you look for some very special behaviour, you should use MiddlewareReader directly which provides everything needed for your Middleware dependency injection.
Relationships
Types Conforming to MiddlewareReaderProtocol
MiddlewareReader
A MiddlewareReader is a way to lazily inject dependencies into a Middleware. For example, you may want to compose multiple middlewares but from a library, and in this library you don't have the dependencies to inject just yet, because these dependencies are only present in the main target. That way, instead of creating the middlewares (which would require all the dependencies), you can wrap their initializers in a MiddlewareReader. The middleware reader is not a middleware, is a a factory (in OOP terms) from
(Dependencies) -> MiddlewareType
(in FP approach). The benefit of wrapping the middleware initializers in a MiddlewareReader is that, for all means, MiddlewareReaders can be composed as Middlewares, can be lifted as Middlewares, but all of this without in fact creating the Middlewares. Your library can then expose a single MiddlewareReader as public, and you keep all its middlewares as internal classes. From the main target you compose this MiddlewareReader with other MiddlewareReaders coming from other libraries and from the main target itself.  Remember that "inject then compose" is the same as "compose then inject", but while the former needs dependencies upfront, the latter is more flexible for being lazy. For those familiar with Functional Programming, this is similar to Reader Monad, but as SwiftRex recommends dependencies only on Middlewares, this Reader works specifically with Middlewares.
Requirements
inject
var inject: (Dependencies) -> MiddlewareType
An initializer function that, given the dependencies in the Middleware's init, will give the Middleware instance When inject is called, your MiddlewareReader materializes into a Middleware.


Symbol Index for "Classification Element"
Symbol Index for diagram
"Classification Element"
Category (Class)
CE/Ordering (Generalization Node)
Classification Element (Class)
Classification In Version (Class)
Classification System (Class)
Classification System Version (Class)
component (Association)
genus (Association)
genus for (Association)
Guideline (Class)
KC/Essential Type (Generalization Node)
Knowledge Concept (Class)
Ordered Classification Element (Class)
Species Relation (Class)
Unordered Classificatn Element (Class)


Dear {{fullname}},
We would like to thank you for registering an account with Neolafia. Before getting started, we ask that you authenticate your account by clicking on the link below.
You'll be ready to book an appointment within minutes!
Regards,
The Neolafia Team


Enter Player1's name
Enter Player2's name
Enter Player3's name
Ghost Chasing
Player1
Time : ????second
Count :
0
Player2
Time : ????second
Count :
0
Player3
Time : ????second
Count :
0
SAFE1
SAFE2
SAFE3
SAFE4
Player1
Player2
Player3


Requester Dashboard
Switch to Traveller Mode
Thank you for your order!
Your order has been received.
Order Details
Item:
Quantity:
Paid:
Return to Homepage


Rohr’s contract extension lies with NFF – Dare
by The Eagle OnlineThe Minister of Youth and Sports Development, Sunday Dare, says the issue of contract extension for Super Eagles coach, Gernot Rohr lies with the Nigeria Football Federation.
The minister gave the clarification on Wednesday in Abuja at a brief meeting with Rohr before dashing for the weekly Federal Executive Council meeting at the presidential villa.
News Agency of Nigeria reports that the media have been awashed with news of a log jam on the extension of the coach’s contract.
Rohr’s current contract expires in June 2020 which will fall to the middle of the 2021 AFCON qualifiers.
Dare, however, stressed that the ministry would continue to give the coach all the necessary support as the NFF finalises its meeting on the contract talks.
“The issue of contract (with Rohr) will be best handled by the NFF, I understand the need to work the fine lines.
“I understand there is a contractual arrangement with the NFF, I will allow the NFF to work through its process,” the minister said.
Dare charged the coach not to be distracted but intensify efforts to take Nigerian football to the pinnacle.
“Are we happy about where our football is at the moment, not exactly but we know there’s an ongoing process that we make this country a better football nation. That process is on and you are part of the process”, he added.
He tasked the coach on working with stakeholders to develop the Nigeria Professional League in line with international best practice.
“More importantly your knowledge and support for the domestic league will be very important because you can share your experience with our local coaches,” the minister said.
Earlier, Rohr congratulated the minister on his appointment and efforts to reposition Nigerian sports.
He pledged to work more closely with the minister going forward as the Super Eagles strive to pick the AFCON 2021 ticket.
High point of the event was the presentation of an autographed Super Eagles jersey by the coach to the minister.
Nigeria currently top group L of the 2021 AFCON qualifiers with six maximum points ahead of Benin Republic, Sierra Leone and Lesotho.
Previous Post
Stanbic IBTC reiterates commitment to agricultural development


April 29, 2020
This project consists of a series of interactive dashboards for exploring the Covid-19 pandemic by regional socio-economic and demographic statistics.
This project enables the public to explore how social inequalities don’t simply vanish in crisis but can instead be magnified, allows policy makers to see where more resources may be necessary to combat the spread of the virus, and helps researchers with preliminary exploration of trends for their own work. Versions of the dashboard exist for exploring virus statistics at international and US state levels.
Features may be added to the dashboards upon request, and data will be updated daily to remain in line with the latest available information. Built on an open-source framework with R Shiny, all project code is available on GitHub.


Creativity Unleashed
Appkit will make your creativity scream!
Create awesome cards in minutes!

Grab Attention
Any position you want. Top, Bottom, Center with any type of content you want for cards.
Call to ActionBecause Appkit is AWESOME
With Icons
FontAwesome 5 Ready
Top Left
Top Center
Top Right
Center Left
Middle
Center Right
Bottom Left
Bottom Center
Bottom Right


Tutorial 10: User-defined Data Type¶
- Goal
Show how user-defined data types can be used in step parameters.
User-defined data types simplify the processing in step definitions. The string parameters are automatically parsed and converted into specific data types.
Note
Besides conversion into a user-defined type, this mechanism can also be used for text transformations that occurs before the parameter is handed to the step definition function.
Write the Feature Test¶
# file:features/tutorial10_step_usertype.feature
Feature: User-Defined Datatype as Step Parameter (tutorial10)
As a test writer
I want that a step parameter is converted into a specific datatype
to simplify the programming of the step definition body.
Scenario Outline: Calculator
Given I have a calculator
When I add "<x>" and "<y>"
Then the calculator returns "<sum>"
Examples:
| x | y | sum |
| 1 | 1 | 2 |
| 1 | 2 | 3 |
| 2 | 1 | 3 |
| 2 | 7 | 9 |
Provide the Test Automation¶
First you need to provide the type converter for Number
and register it:
# file:features/steps/step_tutorial10.py
# ----------------------------------------------------------------------------
# USER-DEFINED TYPES:
# ----------------------------------------------------------------------------
from behave import register_type
def parse_number(text):
"""
Convert parsed text into a number.
:param text: Parsed text, called by :py:meth:`parse.Parser.parse()`.
:return: Number instance (integer), created from parsed text.
"""
return int(text)
# -- REGISTER: User-defined type converter (parse_type).
register_type(Number=parse_number)
Now you can use Number
as type in step parameters for the step definitions:
# file:features/steps/step_tutorial10.py
# ----------------------------------------------------------------------------
# STEPS:
# ----------------------------------------------------------------------------
from behave import given, when, then
from hamcrest import assert_that, equal_to
from calculator import Calculator
@given('I have a calculator')
def step_impl(context):
context.calculator = Calculator()
@when('I add "{x:Number}" and "{y:Number}"')
def step_impl(context, x, y):
assert isinstance(x, int)
assert isinstance(y, int)
context.calculator.add2(x, y)
@then('the calculator returns "{expected:Number}"')
def step_impl(context, expected):
assert isinstance(expected, int)
assert_that(context.calculator.result, equal_to(expected))
Provide the Domain Model¶
# file:features/steps/calculator.py
# -----------------------------------------------------------------------------
# DOMAIN-MODEL:
# -----------------------------------------------------------------------------
class Calculator(object):
def __init__(self, value=0):
self.result = value
def reset(self):
self.result = 0
def add2(self, x, y):
self.result += (x + y)
return self.result
Run the Feature Test¶
When you run the feature file from above:
$ behave ../features/tutorial10_step_usertype.feature Feature: User-Defined Datatype as Step Parameter (tutorial10) # ../features/tutorial10_step_usertype.feature:1 As a test writer I want that a step parameter is converted into a specific datatype to simplify the programming of the step definition body. Scenario Outline: Calculator -- @1.1 # ../features/tutorial10_step_usertype.feature:14 Given I have a calculator # ../features/steps/step_tutorial10.py:44 When I add "1" and "1" # ../features/steps/step_tutorial10.py:48 Then the calculator returns "2" # ../features/steps/step_tutorial10.py:54 Scenario Outline: Calculator -- @1.2 # ../features/tutorial10_step_usertype.feature:15 Given I have a calculator # ../features/steps/step_tutorial10.py:44 When I add "1" and "2" # ../features/steps/step_tutorial10.py:48 Then the calculator returns "3" # ../features/steps/step_tutorial10.py:54 Scenario Outline: Calculator -- @1.3 # ../features/tutorial10_step_usertype.feature:16 Given I have a calculator # ../features/steps/step_tutorial10.py:44 When I add "2" and "1" # ../features/steps/step_tutorial10.py:48 Then the calculator returns "3" # ../features/steps/step_tutorial10.py:54 Scenario Outline: Calculator -- @1.4 # ../features/tutorial10_step_usertype.feature:17 Given I have a calculator # ../features/steps/step_tutorial10.py:44 When I add "2" and "7" # ../features/steps/step_tutorial10.py:48 Then the calculator returns "9" # ../features/steps/step_tutorial10.py:54 1 feature passed, 0 failed, 0 skipped 4 scenarios passed, 0 failed, 0 skipped 12 steps passed, 0 failed, 0 skipped, 0 undefined Took 0m0.001s
The Complete Picture¶
# file:features/steps/step_tutorial10.py
# -*- coding: UTF-8 -*-
"""
Based on ``behave tutorial``
Feature: A Step uses a User-Defined Type as Step Parameter (tutorial10)
Scenario Outline: Calculator
Given I have a calculator
When I add "<x>" and "<y>"
Then the calculator returns "<sum>"
Examples: Add Numbers
| x | y | sum |
| 1 | 1 | 2 |
| 1 | 2 | 3 |
| 2 | 1 | 3 |
| 2 | 7 | 9 |
"""
# @mark.user_defined_types
# ----------------------------------------------------------------------------
# USER-DEFINED TYPES:
# ----------------------------------------------------------------------------
from behave import register_type
def parse_number(text):
"""
Convert parsed text into a number.
:param text: Parsed text, called by :py:meth:`parse.Parser.parse()`.
:return: Number instance (integer), created from parsed text.
"""
return int(text)
# -- REGISTER: User-defined type converter (parse_type).
register_type(Number=parse_number)
# @mark.steps
# ----------------------------------------------------------------------------
# STEPS:
# ----------------------------------------------------------------------------
from behave import given, when, then
from hamcrest import assert_that, equal_to
from calculator import Calculator
@given('I have a calculator')
def step_impl(context):
context.calculator = Calculator()
@when('I add "{x:Number}" and "{y:Number}"')
def step_impl(context, x, y):
assert isinstance(x, int)
assert isinstance(y, int)
context.calculator.add2(x, y)
@then('the calculator returns "{expected:Number}"')
def step_impl(context, expected):
assert isinstance(expected, int)
assert_that(context.calculator.result, equal_to(expected))
Note
Predefined Types
behave uses the parse module (inverse of Python string.format) under the hoods to parse parameters in step definitions. This leads to rather simple and readable parse expressions for step parameters.
See also Predefined Data Types in parse for more information. In addition, see also Data Types and User-defined Types for more information on defining and using user-defined data types.


In one week's time I'll be presenting common_schema: DBA's framework for MySQL at Percona Live, London.
This talk introduces the rich toolset known as common_schema. It is free, open source, extremely useful in solving DBA & developer tasks, and is the next best thing ever invented next to SQL pie charts.
I'll introduce:
- Views, with which you can detect and terminate idle transactions, blocking transactions; roll your range partitions; find duplicate keys; block/unblock accounts; get fine grained privileges per account; find AUTO_ICNREMENT free space; ...
- Routines: do meta executions such as eval(); get query checksums; duplicating accounts; killing suspicious connections; security auditing; parsing JSON data; ...
- QueryScript: if you're not using it, you're missing on a powerful scripting language tightly integrated with SQL/MySQL. We'll see the basic constructs, variables, loops; the more sophisticated MySQL/locks/overhead/danger aware constructs such as foreach & split; throttling, exceptions, it's all in there. I'll present real scripts that saved the day and challenge you to implement them in another scripting language.
- Briefly introducing rdebug: stored routine debugger and debugging API
- Roadmap (some cool things coming along)
What this talk isn't
A tedious "read the manual aloud". Nor is it a comprehensive listing of all functionality. These would be the surest way of sending you to sleep.
What this talk is
A view into the concepts behind common_schema; the reasons this project has justification to exist; the various problems it solves; and yes, interesting examples. Every single common_schema feature was developed out of real world need.
I am confident you'll find common_schema to have something you need that will improve your work as a developer or a DBA.
The talk is similar to the one I gave at Santa Clara this April. It is updated with new content following recent developments.
http://www.slideshare.net/shlominoach/commonschema-22
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title=About date=2021-12-09 type=page status=published ~~~~~~
I am a software developer focused on building robust, scalable web-based applications that run on the JVM. I am always open to expanding my knowledge of new technologies, techniques and tricks. I enjoy a mix of development, evangelizing and mentoring. I strongly value the importance of writing unit tests, running performance tests and finding creative ways to make sure that the "flowers are still standing" when performing architecture refactors. I really enjoy contributing to the open source community and collaborating with others.


--- layout: 'default' title: 'Home' ---
This is an umbrella project/website for semantic understanding and synthesis of 3D scenes.
Browse the scene database here SceneQuerier
Contribute by creating new scenes using our scene editor SceneStudio


Contact me
Thanks for visiting! If you'd like to get in contact with me, please fill out the form below. I hope you have a great day!
Thanks for visiting! If you'd like to get in contact with me, please fill out the form below. I hope you have a great day!


Next:
TCL/TK
Up:
Using Ecolab under Mac
Previous:
Using Ecolab under Mac
Contents
Index
Aqua mode
Subsections
TCL/TK
Compiling and running
Eco Lab
for Aqua
Russell Standish 2014-09-10


Solution
The title suggests that these are cryptic clues, and indeed they are. However they aren't exactly
the standard single definition and single wordplay clues - often, there are more parts!
Anyway, solve the clues:
Across
- Dance, replacing roasted heart with medium / Kobe / beef originally ingested by mother / snake = MAMBA
[_s_→M]AMBA / def / MAM(B_)A / def
- Everything taking to / a cost / at endless polls = ATOLL
A(TO)LL / A+TOLL / AT+_OLL_
- Prime / brew of ether / ash conceals start of hidden / letter count of this puzzle's answer = THREE
def / THREE* / T(H_)REE / def
- Confused shore / firefighter / uncovered western cresol after first hiding / parts of those remains = HOSER
HOSER* / def / H_+_OSER_< / hidden (tHOSE Remains)
- Didn't pay attention to / beginning signs, jumped uncentered, / was knocked out / and metaphorically died = SLEPT
def / S_+LE(-a)PT / def / def
Down
- Misguided principal at high school / oddly meant this / turned fake over time = MATHS
M_+AT+HS / M_A_T_H_S / MA(T)HS< (fake=sham rev.)
- Massachusetts town / playwright Fugard / is outspoken jerk with a lisp = ATHOL
def / def / ATHOL ("asshole" homophone, with a lisp)
- Piece detailed / the next step to this puzzle: / British inspector = MORSE
MORSE[-l] / def / def
- Censorship: / above-average cover up = BLEEP
def / B + LEEP<
- Drunkenly alter / notification / (wary / retweet) after beer = ALERT
ALERT* / def / def / ALE+RT
These fit into a 5×5 word square (and can be used to help get the trickier clues) as follows:
| M | A | M | B | A |
| A | T | O | L | L |
| T | H | R | E | E |
| H | O | S | E | R |
| S | L | E | P | T |
One of the clues suggests what to do next: Morse code. Wordplays tend to be longer than
definitions, so they should be assigned dashes (although if you do the other direction,
.-.- turns out not to be valid English Morse). Thus, we get:
Across:
MAMBA = -.-. = C
ATOLL = --- = O
THREE = .--. = P
HOSER = -.-- = Y
SLEPT = .-.. = L
Down:
MATHS = --- = O
ATHOL = ..- = U
MORSE = -.. = D
BLEEP = .- = A
ALERT = -..- = X
Using the final enumeration, we get COPY LOUD AX. This is another cryptic clue with enumeration provided as 3, resolving to the answer "copy" = F+AX = FAX.
Author’s Notes
This puzzle was initially inspired by thinking about how double definitions
were sometimes naturally extended to greater numbers of definitions (triple definitions, even octuple definitions) in standard cryptics, so I thought that maybe having multiple wordplays would be fun too.
With long and short parts, Morse seemed like a natural encoding scheme and thus this puzzle concept was born.
Thanks to my editors, Jakob and Anderson, who helped with making the grid as well as some of the clues.


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