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MPICH vs OpenMPI
... information in the README distributed with each version (e.g. this is for 3.2.1). Note that because both Open-MPI and MPICH support the OFI (aka libfabric) networking layer, they support many of the same networks. However, libfabric is a multi-faceted API, so not every network may be supported th...
How to append rows to an R data frame
..., and then, at the end, create your data.frame.
Continuing with Julian's f3 (a preallocated data.frame) as the fastest option so far, defined as:
# pre-allocate space
f3 <- function(n){
df <- data.frame(x = numeric(n), y = character(n), stringsAsFactors = FALSE)
for(i in 1:n){
df$x[i...
Find which commit is currently checked out in Git
... commit you're currently on.
$ git log -1 --oneline
c1abcde Add feature-003
Option 3: Bash prompt
In Git version 1.8.3+ (or was it an earlier version?), if you have your Bash prompt configured to show the current branch you have checked out into your working copy, then it will also show you the ...
Dependency Injection vs Factory Pattern
... Fuhrmanator
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answered Feb 17 '09 at 17:14
willcodejavaforfoodwillcodejavaforfood
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Python xml ElementTree from a string source?
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Artem Klevtsov
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answered Mar 15 '09 at 1:36
Jim H.Jim H.
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How to verify a user's password in Devise
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edited Jul 25 '11 at 21:39
Arnaud Leymet
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answe...
C# LINQ find duplicates in List
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Vadim Ovchinnikov
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answered Aug 31 '13 at 10:58
SaveSave
8,7...
How does Spring Data JPA differ from Hibernate for large projects?
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3 Answers
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How do I create a Python function with optional arguments?
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Try calling it like: obj.some_function( '1', 2, '3', g="foo", h="bar" ). After the required positional arguments, you can specify specific optional arguments by name.
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CursorLoader usage without ContentProvider
...kLoader;
/**
* Used to write apps that run on platforms prior to Android 3.0. When running
* on Android 3.0 or above, this implementation is still used; it does not try
* to switch to the framework's implementation. See the framework SDK
* documentation for a class overview.
*
* This was base...