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This is the DART interface to the
Regional Ocean Modeling System - ROMS.
This document describes the relationship between ROMS and DART and provides an overview of
how to perform ensemble data assimilation with ROMS to provide ocean states that are
consistent with the information provided by various ocean observations.
Running ROMS is complicated. It is strongly recommended that you become
very familiar with running ROMS before you attempt a ROMS-DART assimilation experiment.
Running DART is complicated. It is strongly recommended that you become
very familiar with running DART before you attempt a ROMS-DART assimilation experiment.
Running ROMS-DART takes expertise in both areas.
We recommend working through the
DART tutorial to learn the concepts
of ensemble data assimilation and the capabilities of DART.
The ROMS code is not distributed with DART, it can be obtained from the ROMS website
https://www.myroms.org. There you will also find
instructions on how to compile and run ROMS. DART can use the 'verification observations'
from ROMS (basically the estimate of the observation at the location and time
computed as the model advances) so it would be worthwhile to become familiar with
that capability of ROMS. DART calls these 'precomputed forward operators'.
DART can also use observations from the
World Ocean Database - WOD.
The conversion from the WOD formats to the DART observation sequence format is
accomplished by the converters in the
observations/obs_converters/WOD directory. They are described
by WOD.html.
The DART forward operators require interpolation from the ROMS
terrain-following and horizontally curvilinear orthogonal coordinates to the
observation location.
As of revision 12153, this capability is still under development.
A note about file names: During the course of an experiment, many files are created. To make them unique, the ocean_time is converted from
"seconds since 1900-01-01 00:00:00"to the equivalent number of DAYS. An integer number of days. The intent is to tag the filename to reflect the valid time of the model state. This could be used as the DSTART for the next cycle, so it makes sense to me.
The procedure to perform an assimilation experiment is outlined in the following steps:
The shell_scripts directory has several scripts that are intended to provide examples. These scripts WILL need to be modified to work on your system and are heavily internally commented. It will be necessary to read through and understand the scripts. As mentioned before, the ROMS Bin/subsitute command is used to replace temporary placeholders with actual values at various parts during the process.
| Script | Description |
|---|---|
| ensemble.sh | Was written by Hernan Arango to run an ensemble of ROMS models. It is an appropriate example of what is required from the ROMS perspective. It does no data assimilation. |
| stage_experiment.csh | prepares a directory for an assimilation experiment. The idea is basically that everything you need should be assembled by this script and that this should only be run ONCE per experiment. After everything is staged in the experiment directory, another script can be run to advance the model and perform the assimilation. stage_experiment.csh will also modify some of the template scripts and copy working versions into the experiment directory. This script may be run interactively, i.e. from the UNIX command line. |
| submit_multiple_cycles_lsf.csh | is an executable script that submits a series of dependent jobs to an LSF queuing system. Each job runs cycle.csh in the experiment directory and only runs if the previous dependent job completes successfully. |
| cycle.csh.template | is a non-executable template that is modified by stage_experiment.csh and results in an exectuable cycle.csh in the experiment directory. cycle.csh is designed to be run as a batch job and advances the ROMS model states one-by-one for the desired forecast length. The assimilation is performed and the control information for the next ROMS forecast is updated. Each model execution and filter use the same set of MPI tasks. |
| submit_multiple_jobs_slurm.csh | is an executable script that submits a series of dependent jobs to an LSF queuing system. It is possible to submit many jobs the queue, but the jobs run one-at-a-time. Every assimilation cycle is divided into two scripts to be able to efficiently set the resources for each phase. advance_ensemble.csh is a job array that advances each ROMS instance in separate jobs. When the entire job array finishes - and only if they all finish correctly - will the next job start to run. run_filter.csh performs the assimilation and prepares the experiment directory for another assimilation cycle. submit_multiple_jobs_slurm.csh may be run from the command line in the experiment directory. Multiple assimilation cycles can be specified, so it is possible to put many jobs in the queue. |
| advance_ensemble.csh.template | is a non-executable template that is modified by stage_experiment.csh and results in an exectuable advance_ensemble.csh in the experiment directory. advance_ensemble.csh is designed to submit an job array to the queueing system (PBS,SLURM, or LSF) to advance the ensemble members in separate jobs. |
| run_filter.csh.template | is a non-executable template that is modified by stage_experiment.csh and results in an exectuable run_filter.csh in the experiment directory. run_filter.csh is very similar to cycle.csh but does not advance the ROMS model instances. |
The variables from ROMS that are copied into the DART state vector are
controlled by the input.nml model_nml namelist.
See below for the documentation on the &model_nml
entries. The state vector should include all variables needed to apply the forward
observation operators as well as the prognostic variables important to restart ROMS.
The example input.nml model_nml demonstrates
how to construct the DART state vector. The following table explains in detail each
entry for the variables namelist item:
| Column 1 | Column 2 | Column 3 | Column 4 | Column 5 |
|---|---|---|---|---|
| Variable name | DART QUANTITY | minimum | maximum | update |
| Variable name | This is the ROMS variable name as it appears in the ROMS netCDF file. |
| DART QUANTITY | This is the character string of the corresponding DART QUANTITY. The complete list of possible DART QUANTITY values is available in the obs_def_mod that is built by preprocess |
| minimum | If the variable is to be updated in the ROMS restart file, this specifies the minimum value. If set to 'NA', there is no minimum value. |
| maximum | If the variable is to be updated in the ROMS restart file, this specifies the maximum value. If set to 'NA', there is no maximum value. |
| update | The updated variable may or may not be written to the ROMS restart file. 'UPDATE' means the variable in the restart file is updated. This is case-insensitive. 'NO_COPY_BACK' (or anything else) means the variable in the restart file remains unchanged. |
This namelist is read from the file input.nml. Namelists start with an ampersand '&' and terminate with a slash '/'. Character strings that contain a '/' must be enclosed in quotes to prevent them from prematurely terminating the namelist. The default namelist is presented below, a more realistic namelist is presented at the end of this section.
&model_nml roms_filename = 'roms_input.nc' assimilation_period_days = 1 assimilation_period_seconds = 0 vert_localization_coord = 3 debug = 0 variables = '' /
| Item | Type | Description |
|---|---|---|
| roms_filename | character(len=256) | This is the name of the file used to provide information about the ROMS variable dimensions, etc. |
| assimilation_period_days, assimilation_period_seconds |
integer | Combined, these specify the width of the assimilation window. The current model time is used as the center time of the assimilation window. All observations in the assimilation window are assimilated. BEWARE: if you put observations that occur before the beginning of the assimilation_period, DART will error out because it cannot move the model 'back in time' to process these observations. |
| variables | character(:, 5) | A 2D array of strings, 5 per ROMS variable
to be added to the dart state vector.
|
| vert_localization_coord | integer | Vertical coordinate for vertical localization.
|
A more realistic ROMS namelist is presented here, along with one of the more unusual settings that is generally necessary when running ROMS. The use_precomputed_FOs_these_obs_types variable needs to list the observation types that are present in the ROMS verification observation file.
&model_nml roms_filename = 'roms_input.nc' assimilation_period_days = 1 assimilation_period_seconds = 0 vert_localization_coord = 3 debug = 1 variables = 'temp', 'QTY_TEMPERATURE', 'NA', 'NA', 'update', 'salt', 'QTY_SALINITY', '0.0', 'NA', 'update', 'u', 'QTY_U_CURRENT_COMPONENT', 'NA', 'NA', 'update', 'v', 'QTY_V_CURRENT_COMPONENT', 'NA', 'NA', 'update', 'zeta', 'QTY_SEA_SURFACE_HEIGHT' 'NA', 'NA', 'update' / &obs_kind_nml evaluate_these_obs_types = '' assimilate_these_obs_types = 'SATELLITE_SSH', 'SATELLITE_SSS', 'XBT_TEMPERATURE', 'CTD_TEMPERATURE', 'CTD_SALINITY', 'ARGO_TEMPERATURE', 'ARGO_SALINITY', 'GLIDER_TEMPERATURE', 'GLIDER_SALINITY', 'SATELLITE_BLENDED_SST', 'SATELLITE_MICROWAVE_SST', 'SATELLITE_INFRARED_SST' use_precomputed_FOs_these_obs_types = 'SATELLITE_SSH', 'SATELLITE_SSS', 'XBT_TEMPERATURE', 'CTD_TEMPERATURE', 'CTD_SALINITY', 'ARGO_TEMPERATURE', 'ARGO_SALINITY', 'GLIDER_TEMPERATURE', 'GLIDER_SALINITY', 'SATELLITE_BLENDED_SST', 'SATELLITE_MICROWAVE_SST', 'SATELLITE_INFRARED_SST' /
types_mod time_manager_mod threed_sphere/location_mod utilities_mod obs_kind_mod map_utils netcdf typesizes utilities/default_model_mod.f90
The 18 required public interfaces are standardized for all DART compliant models. These interfaces allow DART to advance the model, get the model state and metadata describing this state, find state variables that are close to a given location, and do spatial interpolation for a variety of variables required in observational operators. Some of the interfaces are common to multiple models and exist in their own modules. Only the interfaces unique to ROMS are described here.
| use model_mod, only : | get_model_size | |
| get_state_meta_data | ||
| model_interpolate | ||
| shortest_time_between_assimilations | ||
| static_init_model | ||
| end_model | ||
| nc_write_model_atts | ||
| write_model_time | ||
| read_model_time | ||
| These routines are not required, but are useful: | ||
| get_time_information | ||
| get_location_from_ijk |
These required interfaces are described in their own module documentation:
| use default_model_mod, only : | nc_write_model_vars |
| pert_model_copies | |
| adv_1step | |
| init_time | |
| init_conditions | |
| use location_model_mod, only : | get_close_obs |
| get_close_state | |
| convert_vertical_obs | |
| convert_vertical_state |
The last 4 interfaces are only required for low-order models where advancing
the model can be done by a call to a subroutine. The ROMS model only advances by
executing the program ROMS.exe. Thus the last 4 interfaces only appear as stubs
in the ROMS module.
The interface pert_model_copies is presently not provided for ROMS. The initial
ensemble has to be generated off-line. If coherent structures are not required,
the filter can generate an ensemble with uncorrelated random Gaussian noise of
0.002. This is of course not appropriate for a model like ROMS which has
variables expressed in a wide range of scales. It is thus recommended to
generate the initial ensemble off-line, perhaps with the tools provided in
models/ROMS/PERTURB/3DVAR-COVAR.
A note about documentation style. Optional arguments are enclosed in brackets [like this].
integer :: get_model_size
Returns the length of the model state vector as an integer. This includes all nested domains.
| model_size | The length of the model state vector. |
integer, intent(in) :: index_in type(location_type), intent(out) :: location integer, optional, intent(out) :: var_type
Returns metadata about a given element in the DART vector, specifically the location and the quantity.
| index_in | Index of state vector element about which information is requested. |
| location | the location of the indexed state variable. |
| var_type | Returns the DART QUANTITY (QTY_TEMPERATURE, QTY_U_WIND_COMPONENT, etc.) of the indexed state variable as an optional argument. |
type(ensemble_type), intent(in) :: state_handle integer, intent(in) :: ens_size type(location_type), intent(in) :: location integer, intent(in) :: obs_type real(r8), intent(out) :: expected_obs(:) integer, intent(out) :: istatus(:)
Given a handle to a model state, a physical location, and a desired QUANTITY; model_interpolate returns the array of expected observation values and a status for each. At present, the ROMS model_interpolate is under development as the forward operators for ROMS are precomputed.
| state_handle | A model state vector. |
| ens_size | The size of the ensemble. |
| location | Physical location of interest. |
| obs_type | Integer describing the QUANTITY of interest. |
| expected_obs | The array of interpolated values from the model. The length of the array corresponds to the ensemble size. |
| istatus | The array of integer flags indicating the status of the interpolation. Each ensemble member returns its own status. |
type(time_type) :: shortest_time_between_assimilations
Returns the time step (forecast length) of the model; the smallest increment in time that the model is capable of advancing the state in a given implementation.
| var | Smallest time step of model. |
Used for runtime initialization of the model. This is the first call made to the model by any DART compliant assimilation routine. It reads the model namelist parameters, set the calendar type (the GREGORIAN calendar is used with the ROMS model), and determine the dart vector length. This routine requires that a roms_input.nc is present in the working directory to retrieve model information (grid dimensions and spacing, variable sizes, etc).
Called when use of a model is completed to clean up storage, etc. A stub is provided for the ROMS model.
integer :: nc_write_model_atts integer, intent(in) :: ncid
Function to write model-specific attributes to a netCDF file, usually the DART diagnostic files. This function writes the model metadata to a NetCDF file opened to a file identified by ncid.
| ncid | Integer file descriptor to previously-opened netCDF file. |
| ierr | Returns a 0 for successful completion. |
integer, intent(in) :: ncid type(time_type), intent(in) :: model_time type(time_type), intent(in), optional :: adv_to_time
Routine to write the current model time to the requested netCDF file. This is used for all the DART diagnostic output.
| ncid | Integer file descriptor to an open netCDF file. |
| model_time | The current time of the model state. |
| adv_to_time | The desired time for the next assimilation. |
character(len=*),intent(in) filename type(time_type) var
Routine to read the model time from a netCDF file that has not been opened. The file is opened, the time is read, and the file is closed.
| ncid | the name of the netCDF file. |
| var | The current time associated with the file. Specifically, this is the last 'ocean_time' (normally). |
character(len=*), intent(in) :: filename integer, intent(in) :: ncid character(len=*), intent(in) :: var_name character(len=*), intent(in) :: dim_name integer, optional, intent(out) :: myvarid character(len=32), optional, intent(out) :: calendar integer, optional, intent(out) :: last_time_index type(time_type), optional, intent(out) :: last_time type(time_type), optional, intent(out) :: origin_time type(time_type), optional, intent(out) :: all_times(:)
Routine to determine the variable describing the time in a ROMS netCDF file.
| filename | The name of the netCDF file. This is used for error messages only. |
| ncid | The netCDF file ID - the file must be open. |
| var_name | The name of the variable containing the current model time. This is usually 'ocean_time'. |
| dim_name | The dimension specifying the length of the time variable. TJH: This should not be needed and should be removed. |
| myvarid | The netCDF variable ID of var_name. |
| calendar | The type of calendar being used by filename. |
| last_time_index | The index of the last time var_name. The last time is declared to be the current model time. |
| last_time | The current model time. |
| origin_time | The time defined in the 'units' attributes of var_name. |
| all_times | The entire array of times in var_name. |
real(r8), intent(in) :: filoc real(r8), intent(in) :: fjloc real(r8), intent(in) :: fkloc integer, intent(in) :: quantity type(location_type), intent(out) :: last_time
Returns the lat,lon,depth given a fractional i,j,k and a specified quantity
as well as a status.
Each grid cell is oriented in a counter clockwise direction
for interpolating locations. First we interpolate in latitude
and longitude, then interpolate in height. The height/depth of each grid
cell can very on each interpolation, so care is taken when
we interpolate in the horizontal. Using the 4 different heights
and lat_frac, lon_frac, hgt_frac we can do a simple trilinear
interpolation to find the location given fractional indicies.
var = 10 - bad incoming dart_kind
var = 11 - fkloc out of range
var = 12 - filoc or fjloc out of range for u grid
var = 13 - filoc or fjloc out of range for v grid
var = 14 - filoc or fjloc out of range for rho grid
var = 99 - initalized istatus, this should not happen
| filoc | Fractional x index. | |
| fjloc | Fractional y index. | |
| fkloc | Fractional vertical index. | |
| quantity | The DART quantity of interest. | |
| location | The latitude, longitude and depth. |
These are the files used by the DART side of the experiment. Additional files necessary to run ROMS are not listed here. Depending on the setting in input.nml for stages_to_write, there may be more DART diagnostic files output. The inflation files are listed here because they may be required for an assimilation.
| Routine | Message | Comment |
|---|---|---|
| static_init_model parse_variable_input |
'model_nml:model "variables" not fully specified' | There must be 5 items specified for each variable intended to be part of the DART vector. The variables definition in input.nml does not have 5 items per variable. |
| static_init_model parse_variable_input |
'there is no quantity <...> in obs_kind_mod.f90' | An unsupported (or misspelled) DART quantity is specified in the variables definition in input.nml. |
| get_location_from_ijk | 'Routine not finished.' | This routine has not been rigorously tested. |
none
Fully support interpolation in addition to relying on the verification observations.
DART software - Copyright UCAR. This open source software is provided by UCAR, "as is", without charge, subject to all terms of use at http://www.image.ucar.edu/DAReS/DART/DART_download


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I am an M.Sc. student at the Technical University of Munich. In 2018, I received a Bachelor’s Degree in Computer Science from the Polytechnical University of Catalonia, Barcelona Tech. From January 2018 until May 2018, I took part in the Erasmus mobility program, in which I was studying at the University of Edinburgh.
I’m focusing on Computer Vision & Graphics, and Deep Learning areas. My current research interests are 3D Scanning, Computer Vision & Graphics and Visual Computing.
Download my resumé.
M.Sc in Computer Science, 2022
Technische Universität München
BSc in Computer Science & Engineering, 2018
Polytechnical University of Catalonia, Barcelona Tech


Mercedes-Benz has plans to launch a fully electric G-Class wagon
MUNICH, Nov 9 — This week, Daimler’s digital transformation head Sascha Pallenberg relayed via Twitter that the head of Mercedes-Benz Cars, speaking at an automobile event in Berlin, revealed that an all-electric version of the G-Class wagon is in the works.
On the same day that Volkswagen outlined its plans to launch an all-electric wagon in 2021, Daimler’s head of Mercedes-Benz Ola Källenius announced that “there will be a zero-emission EV version of the Mercedes-Benz G-Class” wagon, too.
The G-Class has been in production since the late 1970s and has since retained its place in the company’s portfolio as one of the least eco-friendly models to date. Switching its current powertrain out for an electric one would do wonders for its environmental profile.
The idea of the G-Class going electric was first brought up by Arnold Schwarzenegger in 2018 (as reported by Automotive News); the company’s then-CEO, Dieter Zetsche, simply stated in return that the company had plans to convert the “entire portfolio” to electric.
According to Källenius, Mercedes-Benz has plans to give customers “the choice of at least one electric alternative in every Mercedes-Benz model series” by 2022 whether that’s a hybrid option or a completely battery-powered option.
Currently in the US, only the GLC and EQC are (or will soon be) available with electric powertrains; the former is a hybrid whereas the second will be the brand’s very first fully electric model when it launches in 2020.
Neither Källenius nor Zetsche indicated a time frame during which the electric G-Class could be unveiled; however, based purely on the company’s electrification strategy, we should see it within the next two years. — AFP-Relaxnews


This package calculates the interval estimates for the parameters of linear models heteroscedastic regression using bootstrap - (Wild Bootstrap) and double bootstrap-t (Wild Bootstrap). It is also possible to calculate confidence intervals using the percentile bootstrap and percentile bootstrap double. It is possible to calculate consistent estimates of the covariance matrix of the parameters of linear regression models with heteroskedasticity of unknown form. The package also provides function to calculate consistently the covariance matrix of the parameters of linear models with heteroskedasticity of unknown form.
| Version: | 1.0.0 |
| Depends: | R (≥ 2.10.0) |
| Published: | 2014-02-22 |
| Author: | Pedro Rafael Diniz Marinho [aut, cre], Francisco Cribari Neto [aut, ctb] |
| Maintainer: | Pedro Rafael Diniz Marinho <pedro.rafael.marinho at gmail.com> |
| License: | GPL-2 | GPL-3 [expanded from: GPL (≥ 2)] |
| URL: | http://www.r-project.org |
| NeedsCompilation: | no |
| CRAN checks: | hcci results |
| Reference manual: | hcci.pdf |
| Package source: | hcci_1.0.0.tar.gz |
| Windows binaries: | r-devel: hcci_1.0.0.zip, r-release: hcci_1.0.0.zip, r-oldrel: hcci_1.0.0.zip |
| OS X binaries: | r-release: hcci_1.0.0.tgz, r-oldrel: hcci_1.0.0.tgz |
Please use the canonical form https://CRAN.R-project.org/package=hcci to link to this page.


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also to prove you're wrong, I showed up late 2018 in regards to pirate
ComputerGenie 👴👴👴17-Apr-19 02:52 AM
frankly many of the bash scripts are over complicated mess
so don't and "uncomplicate them"
VoskCoin17-Apr-19 02:52 AM
this is my full-time job, not a hobby -- not sure what you dont understand about that @Alright
Alright17-Apr-19 02:53 AM
@Greer run for elections yourself.
1
ComputerGenie 👴👴👴17-Apr-19 02:53 AM
@Greer will take care of the node,
the same @Greer who's saying it's too hard to manage with 3 chains?
Greer17-Apr-19 02:53 AM
CG, I've spent the last two weeks using that search box. what you guys dont see is that you're taking a lot of information for granted. There's a reason the few that came from the kmdlabs did so well.
1
1
VoskCoin17-Apr-19 02:53 AM
@ComputerGenie 👴👴👴 there is no reason to be disrespectful
ComputerGenie 👴👴👴17-Apr-19 02:53 AM
There's a reason the few that came from the kmdlabs did so well.
And we've posted 100% of what we did and learned there in this channel
VoskCoin17-Apr-19 02:54 AM
@Deleted User hey its worth a shot lol
Alright17-Apr-19 02:54 AM
How much will it cost to get #kmdlabs promoted @VoskCoin ?
what about #mgnx ?
Greer17-Apr-19 02:55 AM
when did I say that its hard to manage three chains? I run Bitcoin, Lightning, two ethereum nodes (geth and parity) and a zen secure node on my own hardware with little effort.
VoskCoin17-Apr-19 02:55 AM
@Alright just your private keys
ComputerGenie 👴👴👴17-Apr-19 02:55 AM
there is no reason to be disrespectful
No?
Alright17-Apr-19 02:55 AM
You'll promote MGNX for my MGNX private keys?
Greer17-Apr-19 02:55 AM
what I find hard is understanding how the notorizing works, this is unique to kmd and pretty much undocumented
VoskCoin17-Apr-19 02:56 AM
@ComputerGenie 👴👴👴 are you saying you wanted to partner up
i'm pretty sure @Alright wants to work with me
Alright17-Apr-19 02:57 AM
Yes, promote MGNX, and I'll give you 5% of it's supply
Greer17-Apr-19 02:58 AM
I've been trying to clean up the mess I've found in this channel and get it running in a managed way using some best practices, without letting my stats drop too far on the testnet leaderboard.
ComputerGenie 👴👴👴17-Apr-19 02:58 AM
are you saying you wanted to partner up
No, I'm saying that if you're not going to do the job then he should campaign on his own merit (or his admitted lack thereof) and he shouldn't get elected just because people know your name and think they are giving you the job
Alright17-Apr-19 02:58 AM
@Greer run for your own node.
Greer17-Apr-19 02:58 AM
it turns out that autosplitting utxo's isn't autosplitting via iguana at all, its manually splitting them, which is fine, but undocumented.
VoskCoin17-Apr-19 02:59 AM
@ComputerGenie 👴👴👴 that was a lighthearted comment
ComputerGenie 👴👴👴17-Apr-19 02:59 AM
it turns out that autosplitting utxo's isn't autosplitting via iguana at all
and that's been posted in here 20 times
literally(edited)
smk762 - dracocanis ominator17-Apr-19 02:59 AM
Speaking as one of those who came here from LABs, I've spent more hours learning outside my day job than I did in my day job. I've only recently joined the KMD team, before that it was months of curiousity, reading, testing, poking etc which got me here
I've also posted just about every script I'm using, many of them variations on scripts by others.
1
Greer17-Apr-19 03:00 AM
sure and now I know whats what, some of what I read before makes sense. but this is not documentation and hindsight shouldn't be a requirement
its not just Vosk and I either, Voskcoin has a large community including many developers, available to help.
1
VoskCoin17-Apr-19 03:01 AM
Our partnership is simple, he will earn part of NN rewards for operating the node, and I will earn part of the NN rewards for creating KMD and KMD ecosystem tutorials, reviews, content coverage etc @Deleted User
A guide for creating, reading and writing to an oracle in the Komodo platform ecosystem, with optional encryption.
2
VoskCoin17-Apr-19 03:02 AM
& yes our community is incredible, over 73,000
1
Alright17-Apr-19 03:03 AM
@VoskCoin your only reason to do it is based on what you make rather than technical metric?
ComputerGenie 👴👴👴17-Apr-19 03:03 AM
@Deleted User It's not about "deciding"
It's about he's literally bitching that a job that's being handed to him is to hard when he's been spoon-fed everything he needs to do it. And it pisses me off that we work hard for our skill and someone incompetent is likely to get the job and someone competent will get knocked out if he gets it
1
Alright17-Apr-19 03:03 AM
agreed
bring devs
smk762 - dracocanis ominator17-Apr-19 03:03 AM
LABs has been a great learing environment, and I appreciate all the info I gained from spending my free time there.
Greer17-Apr-19 03:03 AM
one of the most active members has more apps on the ledger than any other dev and has code in the linux kernel. NN operators shouldn't' need to be devs though, sysadmins a different skillset entirely.
smk762 - dracocanis ominator17-Apr-19 03:04 AM
I honestly support the idea that it acts as a prospective NN bootcamp
ComputerGenie 👴👴👴17-Apr-19 03:04 AM
There are at least 9 competent people running in EU
VoskCoin17-Apr-19 03:04 AM
I already did @Strob is an awesome guy who has been vocal about joining pirate/kmd after watching my content
Alright17-Apr-19 03:04 AM
@Greer run for your own node.
Greer17-Apr-19 03:05 AM
I wish I'd known more about Labs. some publicity needed there
ComputerGenie 👴👴👴17-Apr-19 03:05 AM
tying one's shoes "could be easier", but it is what it is
Greer17-Apr-19 03:05 AM
@Alright I wouldn't have even tried if vosk hadn't had sold it to me
last year and this year
Alright17-Apr-19 03:05 AM
Vosk only shows up around elections
makes sense
1
Greer17-Apr-19 03:06 AM
I dont see why thats a bad thing
if he is elected and does regular content, if only to pimp his kmd bags, we all win
Alright17-Apr-19 03:06 AM
@Greer run for your own node.
 You should and probably will win one, but kmd needs more than you and the boys club it already has
1
1
smk762 - dracocanis ominator17-Apr-19 03:08 AM
Looking at the #notary-node-alarms I see a few that didnt make it though winter, havent notarised in months or made any contributions to code etc... but are still mining. Then there are the others, like @blackjok3r who despite having a node located in a disadvantaged area has made massive contributions, learning on the way.
skills are one thing, commitment is something else entirely
1
Greer17-Apr-19 03:09 AM
@VoskCoin CG is just doing his thing to compete, its all good. He's actually been the most helpful to me here.
1
ComputerGenie 👴👴👴17-Apr-19 03:09 AM
@VoskCoin yes I did, but at that time you weren't about to take away a competent NN and put someone that thinks being spoon-fed is to difficult in their place
blackjok3r17-Apr-19 03:10 AM
I;m very happy there are people like genie here helping everyone. If I was doing this alone for all the people I wouldnt be able to get any work done
1
VoskCoin17-Apr-19 03:10 AM
do you think KMD should invest in marketing or solely dev work?
ComputerGenie 👴👴👴17-Apr-19 03:10 AM
CG is just doing his thing to compete
Actually, I'm not; I'm not even running in EU
CG is just doing his thing to announce that he wants NNs that are capable of being NNs
blackjok3r17-Apr-19 03:10 AM
Last year we had no help think of basically everyone being Dr Terminus (no offence man)
Greer17-Apr-19 03:11 AM
so what makes you think I'm less competent than anyone else here? You dont know anything about me or what I know because I don't let on what I do/do not know here. Only with regard to kmd notorization which is a new concept for anyone coming in.
smk762 - dracocanis ominator17-Apr-19 03:12 AM
regardless of what the skillset - promo, dev, sysops, writing docs... all are contributions... but consistent commintment and contribution is critical, as is being able to run a node and hang around for the duration of elected term.
2
ComputerGenie 👴👴👴17-Apr-19 03:12 AM
It's the NNs job to protect my currency and transactions
2
Dr.Terminus17-Apr-19 03:12 AM
Greer17-Apr-19 03:12 AM
yes, so with an important job like that why is it not better documented?
1
1
or you're happy with the same few guys doing it each year?
ComputerGenie 👴👴👴17-Apr-19 03:13 AM
@Greer what do you want documented?
Dr.Terminus17-Apr-19 03:13 AM
I do like lots of good documentation myself
Greer17-Apr-19 03:13 AM
iguana, specifically
ComputerGenie 👴👴👴17-Apr-19 03:13 AM
what about it?
blackjok3r17-Apr-19 03:13 AM
iguana documentation is its code... I think its liek that for a reason.... so that we are forced to improve it
ComputerGenie 👴👴👴17-Apr-19 03:13 AM
as a whole, iguana is 15 different things in 1 codebase
Greer17-Apr-19 03:14 AM
ok, well there's something that could be documented
blackjok3r17-Apr-19 03:14 AM
Everything I use is also on git.
smk762 - dracocanis ominator17-Apr-19 03:14 AM
not sure you noticed, but code changes fast here. docs can be a challenge, but there no stopping anyone from writing more.
blackjok3r17-Apr-19 03:14 AM
Plus I made custom RPCs for the daemon which I pestered james for months to be merged that make your lives very easy.
ComputerGenie 👴👴👴17-Apr-19 03:19 AM
Doesn't mean that I dont have intimate knowledge of linux and server security.
Then how do you not understand basic shell scripts?
blackjok3r17-Apr-19 03:20 AM
documentation is discord... just hope ppl listen and relayt this information One of the best reason ofor LABS was I was able to pass on most of my knowledge to a bunch of people at once. These people can then teach others. etc...
Greer17-Apr-19 03:20 AM
I understand bash scripts very well
smk762 - dracocanis ominator17-Apr-19 03:20 AM
I'm speaking in general, as a bloke who spent time learning with what was available, and adding where I could.
ComputerGenie 👴👴👴17-Apr-19 03:20 AM
I understand bash scripts very well
then dafuq is "secret" or "complicated?
1
VoskCoin17-Apr-19 03:20 AM
@ComputerGenie 👴👴👴 getting elected and simply getting a node up are different things -- unsure why you wouldn't want elaborate & complete guides associated with the project you're investing your time and resources in
blackjok3r17-Apr-19 03:20 AM
If your talking about utxo management.... You can do it all in bash and not use iguana at all check webworkers repo.
VoskCoin17-Apr-19 03:21 AM
if I followed your logic, my youtube channel would be worthless
blackjok3r17-Apr-19 03:21 AM
How can you have an eleborate and complete guide for a notaty node when there are at least 10 ways of doing it?
 I've written more than a few, early on just because they werent available. My proposal has a percentage towards translation of docs into other languages.
ComputerGenie 👴👴👴17-Apr-19 03:22 AM
Along the way I have not understood why I am bash scripting some of the things that have been scripted
No one ever said you "had to"
VoskCoin17-Apr-19 03:22 AM
@ComputerGenie 👴👴👴 sure, if I was elected I would be dedicating my time to creating resources to allow new users outside of KMD to enter KMD etc
@smk762 - dracocanis ominator thats awesome and always needed
blackjok3r17-Apr-19 03:23 AM
ujmmmm LABS
smk762 - dracocanis ominator17-Apr-19 03:23 AM
I'm just not convinced that spoonfeeding those who want to be a critical part of dPoW is ideal


Intro to HTML & CSS 4wk Series
Homework
Week 1, Session 1 • March 13, 2018
Introduce yourself in the slack channel! #html_css_4wk
- Who you are
- What you do for work
- What your hobbies are
- What are you hoping to get out of this class
Who's one person that inspires you and why?


Decision Support Tool
Live app link: https://ldwhite.shinyapps.io/RuralSpdSafety_Demo/
Work Progress
- Developed SPFs at both segment and segment-temporal levels for different facility types
- SPFs show that speed measure has effect on crash frequencies
- Developed time-series model to forecast speed
- Analysis on proximity of crashes at segment-temporal level aimed to classify crash and non-crash event
- Developed Decision Support Tool at segment level for Washington and Ohio
Next Steps
- Refine segment-temporal level SPFs
- Refine analysis on proximity of crashes at segment-temporal level
- Add North Carolina data in Decision Supprt Tool


An extracurricular hobby project involving the design and implementation of control software for a quadcopter.
Remote-controlled movement capabilities via RC transmitter.
Travel to specified GPS coordinates within 2 meter accuracy range.
Maintain height via ultrasonic range finder within 10 cm accuracy range.
Voltage monitor for low battery alert.
Safe landing feature if connection lost with transmitter.
The ATmega328p micro-controller's AVR architecture allows me to easily read sensor data through various interfaces. The Arduino Mega's multi-purpose GPIO pins, support for numerous PWM channels, and multiple interrupt pins allow for flexible development.
The first prototype will be built using a pre-manufactured fiberglass frame.
I will be building a test station that allows for safe flight testing. This is important to prevent injury to observers as well as the system and surrounding equipment.
As I continue to develop and test the system, updates will be posted to my robotics blog.


{% extends 'content_wrapper.html' %} {% block page %}
I do a bit of Minecraft server administration and have worked with some friends to create different modpacks. I decided to document them here and give notifications about changes to them. Note most of the mods are not made by us and links to the mod page or mod maker are provided.


Bitcoin Calculator
BTC/USD when bought
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All About That Art
A website designed for users around the world to share and view colorful painting and photogrphy. Users can create their own accounts, store, and share image and text.
Kid's Corner
This collaberative project is geared toward young children. Its focus was to make it an educational tool in learning about the fifty states of the US.
Tech Blog
An website designed to allow users to have peer-to-peer sharing experience features posting and commenting.
Note Taker
Note Taker website is created to help busy professional to list to-do items and remove them as the items has been done.
Take A Hike
Take a Hike is an application that hikers can use create post of hikes they have taken and hikes they want to take in the future. Users will also be able to see other users hikes and comment on them.
Weather Station
The user story behind this application is to allow travelers have an convient way to check the current weather and forcast at any location.


{% include "booking/partials/day-nav.html" with day=day parts_of_day=parts_of_day games=games|get_item:day %}
{{ day|date:"l"|capfirst }} {{ day }}
{% for code, trans in parts_of_day %}
{{ trans }}
{# Todo display part of day form #}
{% for game in games|get_item:day|get_item:code %}
{% include "booking/partials/game-card.html" with game=game %}
{% endfor %}
{% endfor %}
{% has_perm 'booking.add_group_game' user current_group as can_add_game %}
{% if can_add_game %}


My education, experience, and the skills I've acquired on the way!
Education
Experience
Skills
Education
Brigham Young University
Bacherlor of Science in Computer Science
Minor in Entrepreneurship
GPA 3.95/4.00
ACT 33/36
Merit-based Academic scholarship
Relevent Course Work
CS 235 - Data structures
IS 201 - Intro to Information Systems
Work Experience
Coding<4>Youth
Instructor
Teach computer science courses to youth ages 5-17 covering web development, video game design, programming, and more.
Completed over 40 hours of training on HTML, CSS, JavaScript, Unreal Engine, and Fusion 360
ViewShift Partners
Associate Consultant
Working within the tech-group I helped companies improve their products using technology
helped create and design a web application working on both the front-end and back-end
wrote code to gather and organize information to quicken work processes
BYU Record Linking Lab
Research Assistant
part of a team that for the USDA that developed code to scrape, record, and organized date from school websites on lunches during the COVID-19 lockdown
Helped add thousands of records and people to a shared tree on familysearch.com and Ancestry.com
Coordinate with local High Schools to organize an ACT prep class
lead a team of 5 volunteers and with them teach an ACT Prep class at local high schools
The Church of Jesus Christ of Latter-Day Saints
Volunteer Representative
taught and served people in Poland and the Chicago area the principles of Christianity
chosen to organize, lead, and train all 40 representatives in Poland
created and executed a plan to re-organize our efforts to Social Media at the beginning of the COVID-19 Pandemic, leading to over a 100% increase in the amount of people being taught in Poland


The Fortran MPI language bindings have been designed to be compatible with the Fortran 90 standard with additional features from Fortran 2003 and Fortran 2008 [40] + TS 29113 [41].
Rationale.
Fortran 90 contains numerous features designed to
make it a more ``modern'' language than Fortran 77. It seems natural
that MPI should be able to take advantage of these new features with
a set of bindings tailored to Fortran 90.
In Fortran 2008 + TS 29113, the major new language features
used are the ASYNCHRONOUS attribute to protect nonblocking MPI operations,
and assumed-type and assumed-rank dummy arguments for choice buffer arguments.
Further requirements for compiler support are listed in
Section Requirements on Fortran Compilers
.
( End of rationale.)
MPI defines three methods of Fortran support:
Application subroutines and functions may use either
one of the modules or the
mpif.h include file. An implementation may
require the use of one of the modules
to prevent type mismatch errors.
Advice to users.
Users are advised to utilize one of the MPI modules even if
mpif.h enforces type checking
on a particular system.
Using a module provides several
potential advantages over using an include file;
the mpi_f08 module offers the most robust and complete Fortran support.
( End of advice to users.)
In a single application, it must be possible to link together routines
which USE mpi_f08, USE mpi, and INCLUDE 'mpif.h'.
The LOGICAL compile-time constant MPI_SUBARRAYS_SUPPORTED is set to .TRUE. if all buffer choice arguments are defined in explicit interfaces with assumed-type and assumed-rank [41]; otherwise it is set to .FALSE.. The LOGICAL compile-time constant MPI_ASYNC_PROTECTS_NONBLOCKING is set to .TRUE. if the ASYNCHRONOUS attribute was added to the choice buffer arguments of all nonblocking interfaces and the underlying Fortran compiler supports the ASYNCHRONOUS attribute for MPI communication (as part of TS 29113), otherwise it is set to .FALSE.. These constants exist for each Fortran support method, but not in the C header file. The values may be different for each Fortran support method. All other constants and the integer values of handles must be the same for each Fortran support method.
Section Fortran Support Through the mpi_f08 Module through Fortran Support Through the mpif.h Include File define the Fortran support methods. The Fortran interfaces of each MPI routine are shorthands. Section Interface Specifications, Procedure Names, and the Profiling Interface defines the corresponding full interface specification together with the specific procedure names and implications for the profiling interface. Section MPI for Different Fortran Standard Versions the implementation of the MPI routines for different versions of the Fortran standard. Section Requirements on Fortran Compilers summarizes major requirements for valid MPI-3.0 implementations with Fortran support. Section Additional Support for Fortran Register-Memory-Synchronization and Section Additional Support for Fortran Numeric Intrinsic Types describe additional functionality that is part of the Fortran support. MPI_F_SYNC_REG is needed for one of the methods to prevent register optimization problems. A set of functions provides additional support for Fortran intrinsic numeric types, including parameterized types: MPI_SIZEOF, MPI_TYPE_MATCH_SIZE, MPI_TYPE_CREATE_F90_INTEGER, MPI_TYPE_CREATE_F90_REAL and MPI_TYPE_CREATE_F90_COMPLEX. In the context of MPI, parameterizedtypes are Fortran intrinsic types which are specified using KIND type parameters. Sections Problems With Fortran Bindings for MPI through Permanent Data Movement give an overview and details on known problems when using Fortran together with MPI; Section Comparison with C compares the Fortran problems with those in C.


Steps:
1 of 3
Premise Address
This is the address where the monitored person or party resides most of the time.
Enter Address
*(Required)
Street Address:
*
Postal Code:
*
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SUBMIT


I've spent ten years in Chicago, and this is what I've learned...
It sportsman earnestly ye preserved an on. Moment led family sooner cannot her window pulled any. Or raillery if improved landlord to speaking hastened differed he. Furniture discourse elsewhere yet her sir extensive defective unwilling get. Why resolution one motionless you him thoroughly. Noise is round to in it quick timed doors. Written address greatly get attacks inhabit pursuit our but. Lasted hunted enough an up seeing in lively letter. Had judgment out opinions property the supplied.
SF How do I love thee? Let me count the ways...
Chicago has been great, but's it time to move on.


network social individual differences []. centrality changes environmental inter-individual OpenUrl &; individuals mean position plasticity response time CrossRef observed solar used (i.e., model reaction eigenvector positions data variation behaviour networks number random use using Table encounter radiation Fig. behavioural indicate males measures withheld Animal Science group norm population approach central environment predicted suggests Behavioral dataset multilevel new radiation, slopes study values Ecology NRN Web effects possible rainfall suggest Barrett, Behaviour Henzi, animal average conditions. estimated group, physical position, rate structure window Download S.P. View animals changes, conditions day e.g., estimate explained given i.e., intercepts interpretation line magnitude points present rates regression terms (a) (e.g., Figure June Network Open Predicted Press. account available better case changing consequences credible data-hide-link-title=""> data-icon-position="" deviation dynamic environments evidence example, female figure investigate lines make measure measured norms order period plasticity, plasticity. predict predictions quantify respond responses series strong suggesting tab temporal variability within-individual (NRN) Bayesian Biological Given Individual J.A. Research Stan ability allowed and/or assess centrality, centrality. change consistency consistent constructed correlation cumulative data, dataset, did differ does ecological ecology environments. evolutionary extent fitness flexibility group. high indicates life match moving others. period. phenotypes presented provide question rates, respect set time, troop useful variable vary vervet wild


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Contains a number of comparative 'phylogenetic' methods,
mostly focusing on analysing diversification and character
evolution. Contains implementations of 'BiSSE' (Binary State
'Speciation' and Extinction) and its unresolved tree extensions,
'MuSSE' (Multiple State 'Speciation' and Extinction), 'QuaSSE',
'GeoSSE', and 'BiSSE-ness' Other included methods include Markov
models of discrete and continuous trait evolution and constant rate
'speciation' and extinction.
| Version: |
0.9-10 |
| Depends: |
R (≥ 2.10), methods, ape |
| Imports: |
deSolve (≥ 1.7), graphics, grDevices, stats, subplex, Rcpp (≥ 0.10.0) |
| LinkingTo: |
Rcpp |
| Suggests: |
numDeriv, minqa, lubridate, expm, caper, geiger |
| Published: |
2017-04-05 |
| Author: |
Richard G. FitzJohn, with 'GeoSSE' and
'ClaSSE' by Emma E. Goldberg, and 'BiSSE-ness' by Karen
Magnuson-Ford. |
| Maintainer: |
Richard G. FitzJohn <rich.fitzjohn at gmail.com> |
| License: |
GPL-2 | GPL-3 [expanded from: GPL (≥ 2)] |
| URL: |
http://www.zoology.ubc.ca/prog/diversitree |
| NeedsCompilation: |
yes |
| SystemRequirements: |
fftw3 (>= 3.1.2), gsl (>= 1.15) |
| Citation: |
diversitree citation info |
| Materials: |
README ChangeLog |
| In views: |
Phylogenetics |
| CRAN checks: |
diversitree results |


Retired Uniting Church Reverend John Evans was driving on Old Poplar Road in Parkville on Monday about 8am, when a dark-coloured SUV blocked him in.
He stopped his silver car, with registration 100 1DS, before a man got out of the passenger side of the SUV and opened Mr Evans' door.
"That male has waved that handgun around and made demands for John to hand over his car," Detective Senior Constable Anthony Murphy told reporters on Tuesday.
Mr Evans said his attacker was dressed like a police or border force officer, and he realised the gun was fake before the man fiddled with his seatbelt to drag him out.
"I immediately saw the gun. He said 'get out, I have a gun'," Mr Evans told reporters.
"You are looking down the barrel of a gun. There was no sense of metal that he was holding to my face. I wasn't fearful he was going to shoot me."

"I hit the deck but he aggressively was going for my pocket - he worked out where the keys were (it is a push start engine) and literally ripped my trousers to get to those."
During the scuffle, the gun was knocked and skimmed across the road.
"I didn't grab the gun, it flew out in the whole kerfuffle and ... it landed in the gutter," he said.
The man jumped in Mr Evans' car and drove off, with a co-accused leaving in the SUV.
Police have released a face-fit image of a southern European man with tanned skin, in his early 20s, wearing a black baseball cap they wish to speak to about the attack.


Since its inception in 1920, the Alberta Geological Survey (AGS) has drilled several thousand boreholes across the province. Most were drilled only into the unconsolidated sediments overlying the top of bedrock. In 2010, AGS staff began a project to systematically compile all of the borehole log information into a database. This Digital Data product and its companion Open File Report, OFR 2014-06 are the interim results of this initiative.
The dataset comprises three tables: Sources.txt, Boreholes.txt and Intervals.txt, as well as metadata. The Sources table gives summary information about the AGS project for which each borehole was drilled. The Boreholes table gives summary information about each borehole, such as location, drilling method, date, and total depth of the hole. The Intervals table gives descriptive geological information about each distinct geological horizon encountered in the borehole, including lithology and colour of the material. The tables have primary keys on them so they may be loaded into a relational database, GIS system, or geological modelling program. This dataset is an interim release of 266 boreholes.
Two source data types were processed:
1. Unpublished, paper files: Source data included paper borehole logs and maps on file with AGS staff. Logs were scanned to PDF and named according to borehole number on the log, with prefix "Litholog_".
2. Logs previously published in PDF format: The following SourceIDs have been previously published by AGS or other journals: 2, 3, 4, 5, 7, 58. Individual logs were saved to PDF and named according to borehole number on the log, with prefix "Litholog_".


/* * Copyright (C) 1999 WIDE Project. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the project nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef _BITTYPES_H #define _BITTYPES_H #define HAVE_U_INT8_T #ifndef HAVE_U_INT8_T #if SIZEOF_CHAR == 1 typedef unsigned char u_int8_t; typedef signed char int8_t; #elif SIZEOF_INT == 1 typedef unsigned int u_int8_t; typedef signed int int8_t; #else /* XXX */ #error "there's no appropriate type for u_int8_t" #endif #define HAVE_U_INT8_T 1 #define HAVE_INT8_T 1 #endif /* HAVE_U_INT8_T */ #ifndef HAVE_U_INT16_T #if SIZEOF_SHORT == 2 typedef unsigned short u_int16_t; typedef signed short int16_t; #elif SIZEOF_INT == 2 typedef unsigned int u_int16_t; typedef signed int int16_t; #elif SIZEOF_CHAR == 2 typedef unsigned char u_int16_t; typedef signed char int16_t; #else /* XXX */ #error "there's no appropriate type for u_int16_t" #endif #define HAVE_U_INT16_T 1 #define HAVE_INT16_T 1 #endif /* HAVE_U_INT16_T */ #ifndef HAVE_U_INT32_T #if SIZEOF_INT == 4 typedef unsigned int u_int32_t; typedef signed int int32_t; #elif SIZEOF_LONG == 4 typedef unsigned long u_int32_t; typedef signed long int32_t; #elif SIZEOF_SHORT == 4 typedef unsigned short u_int32_t; typedef signed short int32_t; #else /* XXX */ #error "there's no appropriate type for u_int32_t" #endif #define HAVE_U_INT32_T 1 #define HAVE_INT32_T 1 #endif /* HAVE_U_INT32_T */ #ifndef HAVE_U_INT64_T #if SIZEOF_LONG_LONG == 8 typedef unsigned long long u_int64_t; typedef long long int64_t; #elif defined(_MSC_EXTENSIONS) typedef unsigned _int64 u_int64_t; typedef _int64 int64_t; #elif SIZEOF_INT == 8 typedef unsigned int u_int64_t; #elif SIZEOF_LONG == 8 typedef unsigned long u_int64_t; #elif SIZEOF_SHORT == 8 typedef unsigned short u_int64_t; #else /* XXX */ #error "there's no appropriate type for u_int64_t" #endif #endif /* HAVE_U_INT64_T */ #ifndef PRId64 #ifdef _MSC_EXTENSIONS #define PRId64 "I64d" #else /* _MSC_EXTENSIONS */ #define PRId64 "lld" #endif /* _MSC_EXTENSIONS */ #endif /* PRId64 */ #ifndef PRIo64 #ifdef _MSC_EXTENSIONS #define PRIo64 "I64o" #else /* _MSC_EXTENSIONS */ #define PRIo64 "llo" #endif /* _MSC_EXTENSIONS */ #endif /* PRIo64 */ #ifndef PRIx64 #ifdef _MSC_EXTENSIONS #define PRIx64 "I64x" #else /* _MSC_EXTENSIONS */ #define PRIx64 "llx" #endif /* _MSC_EXTENSIONS */ #endif /* PRIx64 */ #ifndef PRIu64 #ifdef _MSC_EXTENSIONS #define PRIu64 "I64u" #else /* _MSC_EXTENSIONS */ #define PRIu64 "llu" #endif /* _MSC_EXTENSIONS */ #endif /* PRIu64 */ #endif /* _BITTYPES_H */


{% extends "reports/base_report.html" %} {% block title %} External CI status for {{ module }} for the last {{ days }} days {% endblock %} {% block scripts %} {% endblock %} {% block content %}
Overall stats for external CIs. Merged patch sets - results of test execution on the last patch set in the merged change request (assuming that it is almost the same as to run tests against master). All patch sets - results of test execution on all patch sets.
List of CIs is taken from DriverLog and can be updated by commit into its default_data.json
Status of CI test execution for every merged patch set grouped by days. Green cell - tests ran successfully, red cell - tests failed, grey cell - tests results not found.


Spell Me
v0.0.1
Spell Me is a Open-Source Chrome extension* that allows you to check spellings and rhyming words as per a keyword.
*Not available in Chrome Web Store
Download
Contribute
How to setup?
Read The Docs


Status
Presents
- Target
- {{ target_presents | humanize_number }}
- Current
- {{ sleigh.presents | humanize_number }}
Sleigh capabilities
- Sleigh capacity
- {{ sleigh.capacity | humanize_number }} presents
- Reindeer pulling power
- {{ sleigh.power | humanize_number }}
Upgrades
{{ item.label }}
- Cost
- {{ item | cost | humanize_number }}
- Quantity
- {{ item.quantity | humanize_number }}
- Benefit
- {{ item.effect }}


Rockefeller Center Christmas Tree arrives in NYC
by WABCMIDTOWN, Manhattan (WABC) -- The arrival of the Rockefeller Center Christmas Tree officially kicked off the holiday season.
The symbolic 77-foot tall Norway Spruce arrived early Saturday and was lifted into place by a crane.
The Rockefeller Center Christmas Tree came from the village of Florida in Orange County, NY, about an hour north of New York City.
Visitors were able to witness the engineering feat as the iconic holiday symbol was raised off a 115-foot-long trailer and erected into its prominent home in Rockefeller Center.
The donor, Carol Schultz, had the privilege of driving the spike into the trunk of the tree with a sledgehammer before the tree was lifted into place.
Thousands of spectators are expected to come and visit the tree in all its splendor throughout the holiday season but can now get a sneak peek of the tree before it is properly lit.
The Tree Lighting Ceremony is scheduled for early December.


I am an Assistant Professor in the Physics Department at Cornell University, and I am building a lab studying quantum materials. I specialize in 2D materials, vdW heterostructures, quantum transport, and scanning tunneling microscopy. Before joining Cornell, I was a PCCM postdoc fellow at Princeton and I obtained my PhD from Harvard in 2019. You can read more about my research direction on my faculty profile. My publications can be found on google scholar.
I am also an amateur photographer and maker. Some hobby works are displayed on this site.
In 2D systems under strong magnetic fields, cyclotron motion of electrons create highly degenerate Landau levels. In these flat Landau levels, the effect of Coulomb interaction is greatly enhanced, which can lead to exotic quantum phenomena such as the famous fractional quantum Hall effect.
More intriguing effects can be realized by placing two 2D layers closeby (2-4nm) so they can interact through Coulomb interaction while direct tunneling is prohibited. In my PhD thesis, I pioneered many discoveries in the graphene double-layer system, which will be introduced below.
An exciton is a pair of an electron and a hole bound by the Coulomb interaction. Because they are bosons, many excitons can reside on the same quantum state to form a macroscopic quantum object. This so called exciton condensate state has many exotic properties such as superfluidity.
In this work, we establish exciton condensation in graphene double-layers by creating pairing between electrons in one layer and holes in a closeby layer. When the condensation happens, interlayer coherence is detected by a large quantized Coulomb drag signal.
Nature Physics 13, 746–750 (2017)Superfluidity and superconductivity are among the most facinating phenomena, where fluid can flow without resistance. Superfluidity in Helium is caused by the Bose Einstein condensation (BEC) of He4 atoms, while conventional superconductors are described by the BCS theory, where weak attractions between electrons enable them to form loose pairs, and avoid impurities through a harmonic waltz.
In this work, we continued our investigation into exciton condensate. By tuning the attraction between electrons and holes, we could access both the BEC and BCS regime. When the attraction is strong, electrons and holes form tightly bound molecules resembling He4 atoms. When the attraction is weak, loose pairing occurs on the Fermi surfaces of the two Fermi liquids, similar to a BCS superconductor. Superfluid states are identified in both regimes and the highest transition temperature is found in the crossover region. This work paved ways to further understand exotic fermion condensate in a unified framework.
Science 375, 205-209 (2022)In a partially filled Landau level, electrons arrange in intricate ways to reduce the Coulomb energy, resulting in the Nobel prize winning fractional quantum Hall effect (FQHE). More intriguingly, it hosts a new type of quasiparticles -- anyons, unique to two-dimensions.
Here, we discovered two component FQHE in graphene double-layer, conspired by intra-layer and inter-layer Coulomb interactions. These interactions can be neutralized by the formation of composite fermions, where an electron bind with two intralayer flux and one interlayer flux. We also discovered a semi-quantized state unique to the two component system, explained by anyon pairing between the two layers.
Nature Physics 15, 893–897 (2019)When two 2D materials are directly stacked onto each other, interlayer tunneling significantly modifies the bandstructure through the formation of moire superlattices. Applying moire band engineering, people have created flat bands and discovered many exotic new phases by twisting two monolayer graphene at the magic angle.
Here, we twist and stack two Bernal bilayer graphene. Thanks to the tunable bandstructure of bilayer graphene with electric field, we could continuously change the bandstructure across the flat band condition in a single device, which allows us to closely inspect how correlated electrons states emerges from the flatband.
Nature 583, 221–225 (2020)In this following study of twisted double bilayer graphene (TDBG), scanning tunneling microscope is used to visualize the moire superlattice structure of TDBG. Through scanning tunneling spectroscopy, we directly demonstrate the tunability of the band structure of TDBG with an electric field. We also show spectroscopic signatures of electronic correlations and topology for its flat band.
Nature Communications 12, 2732 (2021)When 2D electrons are subjected to strong magnetic fields, enhanced Coulomb interactions not only cause fractional quantum Hall effect, but can also induce quantum Hall ferromagnetism, where degeneracy over internal degrees of freedom such as spin is lifted by exchange interactions.
In our most recent work, our spectroscopy measurement and spectroscopic imaging reveal the nature of spin-valley SU(4) quantum Hall ferromagnetism in graphene and a topological excitation called Skyrmion.
Science 375, 321-326 (2022)I really enjoy hand on building. I had the privilege of learning many different building techniques, including CAD, CNC, 3D printing, composite, custom made circuit boards from the famous MIT course: How to Make (Almost) Anything.
For the final project, I designed and built a iPhone gimbal (stablizer) from accelerometers, brushless motors and a microcontroller. I wrote the control algorithem, which direct the motors to compensate for roll/tilt/yaw motion detected by the sensors. A demo can be seen here and the detailed design and making process can be found here.
Engines are some of the most fascinating machines to me. This model steam engine runs on compressed air. When compressed air feed into the inlet, it pushes a piston to drive the aluminum fly wheel. This was the project for Harvard Machine shop certification.
Here is a video of it in live action.


Two modules that read and write values in the Windows Registry, enabling persistence of behavior in an application.
Input Ports
Name Type Description HKey String Root Registry key. KeyName String Name of Registry key. ValueName String Name of Registry value. Value String Actual string to write to Registry. DoIt Integer Trigger input that starts reading or writing. Output Ports
Name Type Description Value String Actual string read from Registry. ValueF Float Conversion of Value to a numerical value. ErrorCode Integer Error code generated internally by Registry functions.
The Windows Registry contains essential system information that is necessary for the operation of a Windows system. If you do not understand the structure of the Registry or appreciate the dangers inherent in editing the Registry then it is recommended that you do not use the modules in this project. Indiscriminate use of these modules is likely to result in damage being caused to the Registry. The International AVS Centre cannot be held liable for any damages resulting from the use of this software.
The Registry modules allow the user to read and write values in the Microsoft Windows Registry. The Windows Registry is the central store for configuration information on all the 32-bit Windows platforms. It is organised into a series of hierarchical tree structures much like directory structures. Three key terms describe a position in the registry.
- HKey
- Specifies which registry tree should be examined. Analagous to a file system Drive.
- Key
- Specifies the position of the item in the registry tree. Analagous to a directory path.
- Value
- Specifies the actual name of the item in the registry tree. Analagous to a filename.
Hence the Registry contains several HKeys, each of which contain a large number of Keys. In turn each Key can contain a number of Values. These modules allow the user to read from and write to a arbitrarily defined position in the registry. They may be used to add persistent behavior to an application. For example an application could store the path to the last file or directory read in, or critical parameter values that could be restored in a later session. The two modules act as a pair, RegistryRead reads values from the registry, while RegistryWrite writes new values or updates old values.
HKey
Root HKey to be read from or written to. This parameter must be specified. Currently the Windows Registry contains 6 root HKeys, shown below. This string is checked to ensure that it is one of these HKeys.
- HKEY_LOCAL_MACHINE
- HKEY_USERS
- HKEY_CURRENT_CONFIG
- HKEY_CURRENT_USER
- HKEY_CLASSES_ROOT
- HKEY_DYN_DATA - Windows 95/98 only
- HKEY_PERFORMANCE_DATA - Windows NT/2000 only
KeyName
Key to be read from or written to. If no value is provided for this parameter the root key of the specified HKey is used.
ValueName
Value to be read from or written to. If no value is provided for this parameter the default value of the specified key is used.
Value - RegistryWrite only
String value to be written to the Registry. A value must be provided for this parameter.
DoIt
Separate trigger parameter that can be used to start reading from or writing to the registry. The modules are notified of changes to some parameters. However to increase the ease of use of these modules this parameter is provided to allow manual triggering of registry reading or writing.
Value - RegistryRead only
String value read from the registry.
ValueF - RegistryRead only
Conversion of the value read from the registry to numerical format. This output is provided to allow for the easier storage of numerical data in the registry.
ErrorCode
Error code generated internally by the Registry functions. If the functions completed successfully this parameter will have a value of zero. Normally this output will only be used if the error messages given by the module itself are not sufficient.
An example application, RegistryEg, is provided that creates a RegistryRead and a RegistryWrite module. The user can then use these modules to read values from and write values to the registry.
xp_comm_proj/registry/reg_mods.v contains the V definitions of the RegistryRead and RegistryWrite modules.
xp_comm_proj/registry/reg_macs.v contains the V definition of the RegistryEg example application.
The Windows Registry is a very powerful store of information. However it is complicated to use and vulnerable to damage caused by incorrectly written software. If you use these modules you should make yourself familiar with the relevant registry documentation. This is available form the Microsoft Developer's Network.
These modules only work on the Windows platforms. The do not work on UNIX platforms. The modules are not defined on UNIX platforms.
The low-level RegistryMods library containing the low-level modules does not specify a process. By default the express process will be used.
Mark Ward, Advanced Visual Systems, Inc. Andrew Dodd, International AVS Centre.


This page allows you to test various algorithms made available by libsodium.js. Each algorithm will first be tested with random values and then tested with vectors harvested from the original "libsodium" library.


I CAN HAS
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loreum epsi


2 lb fresh cremini or baby bella mushrooms wiped clean
4 cloves garlic grated or minced
1/4 cup + 1 Tbsp olive oil
2 Tbsp balsamic vinegar
1/2 tsp dried thyme
1/2 tsp kosher salt
1/4 tsp black pepper
4 Tbsp butter cut into small pieces
Fresh parsley (for garnish - optional)
Preheat oven to 425 degrees, and line a baking sheet (with a rim) with aluminum foil. Alternatively, spray a baking dish with non-stick cooking spray.
Wipe mushrooms with a damp paper towel and trim any long stems. If mushrooms are large, cut in half, or quarter if they're huge.
Add oil, vinegar, garlic, thyme, salt and pepper to a mixing bowl and whisk until well combined. Add mushrooms and toss to ensure mushrooms are coated. Spread out on baking sheet (or baking dish) and scatter butter throughout mushrooms.
Bake for 20-25 minutes, giving the pan a shake (or stirring the mushrooms) about halfway through.
If desired, sprinkle with fresh minced parsley before serving.


Blue Screen of Death
`Prev `__
B
`Next `__
--------------
**Blue Screen of Death**: n.
[common] This term is closely related to the older `*Black Screen of
Death* `__ but much more common (many
non-hackers have picked it up). Due to the extreme fragility and
bugginess of Microsoft Windows, misbehaving applications can readily
crash the OS (and the OS sometimes crashes itself spontaneously). The
Blue Screen of Death, sometimes decorated with hex error codes, is what
you get when this happens. (Commonly abbreviated
`*BSOD* `__.) The following entry from the `Salon Haiku
Contest `__,
seems to have predated popular use of the term:
|
| Windows NT crashed.
| I am the Blue Screen of Death
| No one hears your screams.
--------------
+-----------------------------+----------------------------+------------------------------+
| `Prev `__ | `Up <../B.html>`__ | `Next `__ |
+-----------------------------+----------------------------+------------------------------+
| blue goo | `Home <../index.html>`__ | blue wire |
+-----------------------------+----------------------------+------------------------------+


"I was surprised Barça boss Valverde lined up with four forwards"
Leganes coach Javier Aguirre was not expecting Messi, Griezmann, Suarez AND Dembele
by SPORT.esLeganes coach Javier Aguirre says he was caught cold by Ernesto Valverde's decision to field four attackers in Saturday's 2-1 win at Butarque.
Valverde lined up with Antoine Griezmann, Lionel Messi, Ousmane Dembele and Luis Suarez, although his side still went in trailing by one goal at the break.
However, second-half strikes from Luis Suarez and Arturo Vidal turned the game around and earned the Catalans a hard-fought three points in Madrid.
"Ernesto surprised me with the four attackers," Aguirre told El Chiringuito. "It's scary on paper. I wasn't expecting it. My concern was where Messi was going to play. With the four upfront and (full-backs Moussa) Wague and (Junior) Firpo, they were attacking with six players."
Aguirre also spoke about the Gareth Bale controversy at Real Madrid: "I saw the thing with the flag and it wasn't a minor thing. It was a bad idea from the Welsh players to face off their friend against his club. I liked how Zidane dealt with it, though, taking away importance from the matter.
 They know Real Madrid is Real Madrid and it's hard to leave through the back door, they should not try that."


(n.) the network of physical objects or "things" embedded with electronics, software, sensors, and connectivity to enable objects to exchange data with the manufacturer, operator and/or other connected devices based on the infrastructure of International Telecommunication Union's Global Standards Initiative.
What are these "Things" You Speak Of?
Almost anything you can think of
Small pieces of hardware, limited in functional scope
Empowered with communications capabilities
New devices or "connected" versions of longstanding products
Encapsulate functionality and easily loop, create events, etc
Control your creations with a web-based interface
Easily access pinouts and hardware interfaces on supported platforms
Made by the Hybrid Group, a California consultancy that has released robot-control frameworks in several languages. They also help make SDKs and developer portals for new Things.
Platforms
The device/interfaces that you can program with Gobot
Specific toys and dev boards
GPIO
I2C
Bluetooth LE (coming soon)
Drivers
Encapsulate notions of Platform-independent functionality
Implemented as a lightweight interface
Hold methods for doing functionality-specific things
Examples: buzzers, LEDs, LCDs
Adaptors
Encapsulate the abstraction of a Platform
Implemented as a lightweight interface
Holds pinout abstraction and things like I2C specifics
Abstracts away things like GPIO implementation differences


The Web-
--Collection of HTML documents (Hyper Text Markup Language)
---HTML glues everything together
---Main type of document on the web
-Major Pieces
--You+computer+browser
--The internet
--Servers
---Browsermakes requests, via the internet, to servers, using http
----responds with the files that your browser displays
HTML-
--Made up of text(What you see)
markup(what it looks like)
references to other documents(videos, images, etc.)
links to other pages
--Markup
---Made up of tags
---Contents
Opening Closing
Tag Tag
--Attributes
---Have a name
---Always equal a "value"
derp (Anchor Attribute)
Attribute name Value
Source=url Diplayed text when
of image image doesnt load
---Images dont have a closing tag, no contents to an image
----Void tag=tag with no content
Inline/Block
-- = inline
-- = block
---Inline = just one line, effects only one line
---Block = "invisible block" on the page
Span/Div


Happy New Year!
Thank you for all your support in the last year! In 2020, Mask Network has launched many new features such as adding Trading and DEXs feature, supporting NFTs on Twitter and adding Fiat On-ramp. Now it’s 2021 and we are glad to announce that Mask Network will launch a really cool new feature— — ITO（Initial Twitter Offering).
What is ITO (Initial Twitter offering)?
Like what we have done to other popular DApps, we want users to be able to directly participate in public offerings on Twitter. Seeing a KOL shilling some projects you like and that they are raising fund? Now you can fund it 1-click without leaving Twitter.
This is enabled by our decentralized applet infrastructure that allows any DApp to be rendered on top of the existing web-based social networks. Transak, the fiat onramp aggregator would virtually allow people all over the globe to participate in the offerings in 1-click without owning any sort of cryptocurrency before.
Comparison to IPO/IEO/IDOs.
This is a stark contrast compared to the complex permission traditional IPO/IEOs, where the process is complex and KYC-required. The current generation of internet brokerages like Robinhood have streamlined the process compare to the more traditional brokerages. But global access to the best stock offerings is still limited outside the U.S.; In crypto space, centralized exchanges inherited and improved upon the experiences of the traditional market. They partially solve the global access problem, but lack of transparency and regulation makes IEO an extremely asymmetrical game.
As for users already accustomed to the Defi game, ITO is still a step closer to the IDO (initial Dex offering) participants since a lot of them literally dwell on Twitter. Shorter user journey is usually the key differentiator and driver for better adoption.
Variety of Assets.
We welcome various assets to be issued by the ITO platform. Existing tokens can make secondary offerings on Mask to give back to their loyal community supporters. New tokens can choose to launch with Mask first to stay on the cutting edge of financial revolution and garner the social spotlights. Personal tokens could have a very snug fit with the ITO product. NFTs will work as well.
Methods of Offering.
As for methods of offering, we support flat price first and allow sellers to offer tokens at a fixed price in batches (think Xiaomi style phone flash sales). Later we will support various forms of auctions and bonding curves to serve all kinds of offering needs.
Is it fun? Install mask.io and set up your own Mask account. Come and join the first-ever Twitter Offering! We hope ITO could be another pivotal step to bring true financial freedom to the general public.
Remember to follow Mask Network official accounts to get the latest news.
Github https://github.com/DimensionDev
Twitter https://twitter.com/realMaskNetwork
Facebook https://www.facebook.com/masknetwork
Discord https://discord.com/invite/cKGW45g
Telegram (English) https://t.me/maskbook_group
Telegram （中文） https://t.me/masknetwork_cn


{% extends 'templated-base.html' %} {% block hero %}
ÜberLearner doesn't restrict the topics the instructors teach. This means that you can find a wide variety of courses on ÜberLearner.
Currently all the courses on ÜberLearner are free! Make use of this limited-offer by signing up now.
ÜberLearner offers free hosting for your courses along with tools to help you create them.
ÜberLearner offers you the chance to make money from the advertisements on your course. And as a bonus for the early adopters, 100% of the ad-revenue will be given to the instructor.


Engaged Citizens
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Please send your feedback and suggestions!


public class LambdaMetafactory extends Object
Methods to facilitate the creation of simple "function objects" that
implement one or more interfaces by delegation to a provided MethodHandle
,
possibly after type adaptation and partial evaluation of arguments. These
methods are typically used as bootstrap methods for invokedynamic
call sites, to support the lambda expression and method
reference expression features of the Java Programming Language.
Indirect access to the behavior specified by the provided MethodHandle
proceeds in order through three phases:
CallSite
whose target can be used to create suitable function
objects. Linkage may involve dynamically loading a new class that
implements the target interface. The CallSite
can be considered a
"factory" for function objects and so these linkage methods are referred
to as "metafactories".CallSite
's target is
invoked, typically through an invokedynamic
call site,
producing a function object. This may occur many times for
a single factory CallSite
. Capture may involve allocation of a
new function object, or may return an existing function object. The
behavior MethodHandle
may have additional parameters beyond those
of the specified interface method; these are referred to as captured
parameters, which must be provided as arguments to the
CallSite
target, and which may be early-bound to the behavior
MethodHandle
. The number of captured parameters and their types
are determined during linkage.MethodHandle
is invoked with the captured arguments and any additional arguments
provided on invocation, as if by MethodHandle.invoke(Object...)
.It is sometimes useful to restrict the set of inputs or results permitted
at invocation. For example, when the generic interface Predicate<T>
is parameterized as Predicate<String>
, the input must be a
String
, even though the method to implement allows any Object
.
At linkage time, an additional MethodType
parameter describes the
"instantiated" method type; on invocation, the arguments and eventual result
are checked against this MethodType
.
This class provides two forms of linkage methods: a standard version
(metafactory(MethodHandles.Lookup, String, MethodType, MethodType, MethodHandle, MethodType)
)
using an optimized protocol, and an alternate version
altMetafactory(MethodHandles.Lookup, String, MethodType, Object...)
).
The alternate version is a generalization of the standard version, providing
additional control over the behavior of the generated function objects via
flags and additional arguments. The alternate version adds the ability to
manage the following attributes of function objects:
FLAG_BRIDGES
indicates that a list of additional
MethodType
s will be provided, each of which will be implemented
by the resulting function object. These methods will share the same
name and instantiated type.FLAG_MARKERS
indicates that a list of additional interfaces will be provided, each of
which should be implemented by the resulting function object.FLAG_SERIALIZABLE
can be used to indicate that the function objects should be serializable.
Serializable function objects will use, as their serialized form,
instances of the class SerializedLambda
, which requires additional
assistance from the capturing class (the class described by the
MethodHandles.Lookup
parameter caller
); see
SerializedLambda
for details.Assume the linkage arguments are as follows:
invokedType
(describing the CallSite
signature) has
K parameters of types (D1..Dk) and return type Rd;samMethodType
(describing the implemented method type) has N
parameters, of types (U1..Un) and return type Ru;implMethod
(the MethodHandle
providing the
implementation has M parameters, of types (A1..Am) and return type Ra
(if the method describes an instance method, the method type of this
method handle already includes an extra first argument corresponding to
the receiver);instantiatedMethodType
(allowing restrictions on invocation)
has N parameters, of types (T1..Tn) and return type Rt.Then the following linkage invariants must hold:
implMethod
is a direct method handlesamMethodType
and instantiatedMethodType
have the same
arity N, and for i=1..N, Ti and Ui are the same type, or Ti and Ui are
both reference types and Ti is a subtype of UiFurther, at capture time, if implMethod
corresponds to an instance
method, and there are any capture arguments (K > 0
), then the first
capture argument (corresponding to the receiver) must be non-null.
A type Q is considered adaptable to S as follows:
| Q | S | Link-time checks | Invocation-time checks |
|---|---|---|---|
| Primitive | Primitive | Q can be converted to S via a primitive widening conversion | None |
| Primitive | Reference | S is a supertype of the Wrapper(Q) | Cast from Wrapper(Q) to S |
| Reference | Primitive | for parameter types: Q is a primitive wrapper and Primitive(Q)
can be widened to S
for return types: If Q is a primitive wrapper, check that Primitive(Q) can be widened to S |
If Q is not a primitive wrapper, cast Q to the base Wrapper(S); for example Number for numeric types |
| Reference | Reference | for parameter types: S is a supertype of Q
for return types: none |
Cast from Q to S |
| Modifier and Type | Field and Description |
|---|---|
static int |
FLAG_BRIDGES
Flag for alternate metafactories indicating the lambda object requires
additional bridge methods
|
static int |
FLAG_MARKERS
Flag for alternate metafactories indicating the lambda object implements
other marker interfaces
besides Serializable
|
static int |
FLAG_SERIALIZABLE
Flag for alternate metafactories indicating the lambda object
must be serializable
|
| Constructor and Description |
|---|
LambdaMetafactory() |
| Modifier and Type | Method and Description |
|---|---|
static CallSite |
altMetafactory(MethodHandles.Lookup caller,
String invokedName,
MethodType invokedType,
Object... args)
Facilitates the creation of simple "function objects" that implement one
or more interfaces by delegation to a provided
MethodHandle ,
after appropriate type adaptation and partial evaluation of arguments. |
static CallSite |
metafactory(MethodHandles.Lookup caller,
String invokedName,
MethodType invokedType,
MethodType samMethodType,
MethodHandle implMethod,
MethodType instantiatedMethodType)
Facilitates the creation of simple "function objects" that implement one
or more interfaces by delegation to a provided
MethodHandle ,
after appropriate type adaptation and partial evaluation of arguments. |
public static final int FLAG_SERIALIZABLE
public static final int FLAG_MARKERS
public static final int FLAG_BRIDGES
public static CallSite metafactory(MethodHandles.Lookup caller, String invokedName, MethodType invokedType, MethodType samMethodType, MethodHandle implMethod, MethodType instantiatedMethodType) throws LambdaConversionException
MethodHandle
,
after appropriate type adaptation and partial evaluation of arguments.
Typically used as a bootstrap method for invokedynamic
call sites, to support the lambda expression and method
reference expression features of the Java Programming Language.
This is the standard, streamlined metafactory; additional flexibility
is provided by altMetafactory(MethodHandles.Lookup, String, MethodType, Object...)
.
A general description of the behavior of this method is provided
above
.
When the target of the CallSite
returned from this method is
invoked, the resulting function objects are instances of a class which
implements the interface named by the return type of invokedType
,
declares a method with the name given by invokedName
and the
signature given by samMethodType
. It may also override additional
methods from Object
.
caller
- Represents a lookup context with the accessibility
privileges of the caller. When used with invokedynamic
,
this is stacked automatically by the VM.invokedName
- The name of the method to implement. When used with
invokedynamic
, this is provided by the
NameAndType
of the InvokeDynamic
structure and is stacked automatically by the VM.invokedType
- The expected signature of the CallSite
. The
parameter types represent the types of capture variables;
the return type is the interface to implement. When
used with invokedynamic
, this is provided by
the NameAndType
of the InvokeDynamic
structure and is stacked automatically by the VM.
In the event that the implementation method is an
instance method and this signature has any parameters,
the first parameter in the invocation signature must
correspond to the receiver.samMethodType
- Signature and return type of method to be implemented
by the function object.implMethod
- A direct method handle describing the implementation
method which should be called (with suitable adaptation
of argument types, return types, and with captured
arguments prepended to the invocation arguments) at
invocation time.instantiatedMethodType
- The signature and return type that should
be enforced dynamically at invocation time.
This may be the same as samMethodType
,
or may be a specialization of it.invokedType
LambdaConversionException
- If any of the linkage invariants
described above
are violatedpublic static CallSite altMetafactory(MethodHandles.Lookup caller, String invokedName, MethodType invokedType, Object... args) throws LambdaConversionException
MethodHandle
,
after appropriate type adaptation and partial evaluation of arguments.
Typically used as a bootstrap method for invokedynamic
call sites, to support the lambda expression and method
reference expression features of the Java Programming Language.
This is the general, more flexible metafactory; a streamlined version
is provided by metafactory(java.lang.invoke.MethodHandles.Lookup,
String, MethodType, MethodType, MethodHandle, MethodType)
.
A general description of the behavior of this method is provided
above
.
The argument list for this method includes three fixed parameters,
corresponding to the parameters automatically stacked by the VM for the
bootstrap method in an invokedynamic
invocation, and an Object[]
parameter that contains additional parameters. The declared argument
list for this method is:
CallSite altMetafactory(MethodHandles.Lookup caller,
String invokedName,
MethodType invokedType,
Object... args)
but it behaves as if the argument list is as follows:
CallSite altMetafactory(MethodHandles.Lookup caller,
String invokedName,
MethodType invokedType,
MethodType samMethodType,
MethodHandle implMethod,
MethodType instantiatedMethodType,
int flags,
int markerInterfaceCount, // IF flags has MARKERS set
Class... markerInterfaces, // IF flags has MARKERS set
int bridgeCount, // IF flags has BRIDGES set
MethodType... bridges // IF flags has BRIDGES set
)
Arguments that appear in the argument list for
metafactory(MethodHandles.Lookup, String, MethodType, MethodType, MethodHandle, MethodType)
have the same specification as in that method. The additional arguments
are interpreted as follows:
flags
indicates additional options; this is a bitwise
OR of desired flags. Defined flags are FLAG_BRIDGES
,
FLAG_MARKERS
, and FLAG_SERIALIZABLE
.markerInterfaceCount
is the number of additional interfaces
the function object should implement, and is present if and only if the
FLAG_MARKERS
flag is set.markerInterfaces
is a variable-length list of additional
interfaces to implement, whose length equals markerInterfaceCount
,
and is present if and only if the FLAG_MARKERS
flag is set.bridgeCount
is the number of additional method signatures
the function object should implement, and is present if and only if
the FLAG_BRIDGES
flag is set.bridges
is a variable-length list of additional
methods signatures to implement, whose length equals bridgeCount
,
and is present if and only if the FLAG_BRIDGES
flag is set.Each class named by markerInterfaces
is subject to the same
restrictions as Rd
, the return type of invokedType
,
as described above
. Each MethodType
named by bridges
is subject to the same restrictions as
samMethodType
, as described above
.
When FLAG_SERIALIZABLE is set in flags
, the function objects
will implement Serializable
, and will have a writeReplace
method that returns an appropriate SerializedLambda
. The
caller
class must have an appropriate $deserializeLambda$
method, as described in SerializedLambda
.
When the target of the CallSite
returned from this method is
invoked, the resulting function objects are instances of a class with
the following properties:
invokedType
and any interfaces named by markerInterfaces
invokedName
,
and the signature given by samMethodType
and additional signatures
given by bridges
Object
, and may
implement methods related to serialization.caller
- Represents a lookup context with the accessibility
privileges of the caller. When used with invokedynamic
,
this is stacked automatically by the VM.invokedName
- The name of the method to implement. When used with
invokedynamic
, this is provided by the
NameAndType
of the InvokeDynamic
structure and is stacked automatically by the VM.invokedType
- The expected signature of the CallSite
. The
parameter types represent the types of capture variables;
the return type is the interface to implement. When
used with invokedynamic
, this is provided by
the NameAndType
of the InvokeDynamic
structure and is stacked automatically by the VM.
In the event that the implementation method is an
instance method and this signature has any parameters,
the first parameter in the invocation signature must
correspond to the receiver.args
- An Object[]
array containing the required
arguments samMethodType
, implMethod
,
instantiatedMethodType
, flags
, and any
optional arguments, as described
altMetafactory(MethodHandles.Lookup, String, MethodType, Object...)
above}invokedType
LambdaConversionException
- If any of the linkage invariants
described above
are violatedDracula Javadoc Sample, Made with Allan Im.