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How to pass command line arguments to a rake task
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Options and dependencies need to be inside arrays:
namespace :thing do
desc "it does a thing"
task :work, [:option, :foo, :bar] do |task, args|
puts "work", args
end
task :another, [:option, :foo, :bar] do |task, args|
puts "another #{args}"
Rake::Task["thing:work"].inv...
How do I revert a Git repository to a previous commit?
How do I revert from my current state to a snapshot made on a certain commit?
41 Answers
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Perform an action in every sub-directory using Bash
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for D in `find . -type d`
do
//Do whatever you need with D
done
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How to create REST URLs without verbs?
.... I'm all for the restful approach of using URLs with nouns and not verbs don't understand how to do this.
9 Answers
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Google App Engine: Is it possible to do a Gql LIKE query?
...In SQL, if I want to search a text field for a couple of characters, I can do:
12 Answers
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What does this symbol mean in JavaScript?
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See the documentation on MDN about expressions and operators and statements.
Basic keywords and general expressions
this keyword:
How does the "this" keyword work?
var x = function() vs. function x() — Function declaration sy...
How do I make an asynchronous GET request in PHP?
...to make a simple GET request to another script on a different server. How do I do this?
22 Answers
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How to modify a global variable within a function in bash?
...values from a subshell to its parent. First, you can output something to stdout, then capture it with a command substitution:
myfunc() {
echo "Hello"
}
var="$(myfunc)"
echo "$var"
Gives:
Hello
For a numerical value from 0-255, you can use return to pass the number as the exit status:
my...
How do I increase the RAM and set up host-only networking in Vagrant?
...rious VM properties by adding the following configuration (see the Vagrant docs for a bit more info):
# Configure VM Ram usage
config.vm.customize [
"modifyvm", :id,
"--name", "Test_Environment",
"--memory", "1024"
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How do you move a file?
...er in order to maintain its revision history. Is this possible? If so, how do you do it?
13 Answers
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