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Using capistrano to deploy from different git branches
...S, orelse the argument would not pass through to cap, when using fetch(:var_name, 'default') to get it.
– Frederik Struck-Schøning
Jan 23 '14 at 10:14
1
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Timing a command's execution in PowerShell
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Yup.
Measure-Command { .\do_something.ps1 }
Note that one minor downside of Measure-Command is that you see no stdout output.
[Update, thanks to @JasonMArcher] You can fix that by piping the command output to some commandlet that writes to the hos...
How do I tell Gradle to use specific JDK version?
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Two ways
In gradle.properties in the .gradle directory in your HOME_DIRECTORY set org.gradle.java.home=/path_to_jdk_directory
or:
In your build.gradle
compileJava.options.fork = true
compileJava.options.forkOptions.executable = '/path_to_javac'
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Difference between var_dump,var_export & print_r
What is the difference between var_dump , var_export and print_r ?
2 Answers
2
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SQLite Concurrent Access
...ize contention. Especially SQLite 3.
For most desktop/laptop/tablet/phone applications, SQLite is fast enough as there's not enough concurrency. (Firefox uses SQLite extensively for bookmarks, history, etc.)
For server applications, somebody some time ago said that anything less than 100K page vie...
How to use a variable to specify column name in ggplot
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You can use aes_string:
f <- function( column ) {
...
ggplot( rates.by.groups, aes_string(x="name", y="rate", colour= column,
group=column ) )
}
as long as you pass the column to the fun...
Is there a performance gain in using single quotes vs double quotes in ruby?
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$ ruby -v
ruby 1.9.3p0 (2011-10-30 revision 33570) [x86_64-darwin11.0.0]
$ cat benchmark_quotes.rb
# As of Ruby 1.9 Benchmark must be required
require 'benchmark'
n = 1000000
Benchmark.bm(15) do |x|
x.report("assign single") { n.times do; c = 'a string'; end}
x.report("assi...
How can I switch my git repository to a particular commit
...anch (locally):
With the commit hash (or part of it)
git checkout -b new_branch 6e559cb
or to go back 4 commits from HEAD
git checkout -b new_branch HEAD~4
Once your new branch is created (locally), you might want to replicate this change on a remote of the same name: How can I push my chang...
month name to month number and vice versa in python
...calendar module:
import calendar
{v: k for k,v in enumerate(calendar.month_abbr)}
Before Python (2.7+) you would do
dict((v,k) for k,v in enumerate(calendar.month_abbr))
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How to configure PostgreSQL to accept all incoming connections
...s regardless of the source IP address. How can this be configured in the pg_hba.conf file? I'm using postgreSQL version 8.4.
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