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Set a default parameter value for a JavaScript function
...S2015, default parameters are in the language specification.
function read_file(file, delete_after = false) {
// Code
}
just works.
Reference: Default Parameters - MDN
Default function parameters allow formal parameters to be initialized with default values if no value or undefined is pass...
Skip Git commit hooks
...k folder elsewhere, and setup a post-merge hook (git-scm.com/docs/githooks#_post_merge) which will detect if the pull affect the repo hook folder, and will propose to copy its content to your local hook folder (outside of the repo): that way, you can at least control if you want your hooks overridde...
Is there a performance gain in using single quotes vs double quotes in ruby?
...
$ 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...
iOS 7 UIBarButton back button arrow color
...] setTintColor:[UIColor blackColor]];
Navigation bar contains subview of _UINavigationBarBackIndicatorView type (last item in subviews array) which represents arrow.
Result is navigation bar with different colors of back button arrow and back button title
...
Iterate through object properties
... check:
for (var prop in obj) {
if (Object.prototype.hasOwnProperty.call(obj, prop)) {
// do stuff
}
}
It's necessary because an object's prototype contains additional properties for the object which are technically part of the object. These additional properties are inherited fr...
How to ignore xargs commands if stdin input is empty?
... -L <#lines>, -n <#args>, -i, and -I <string>:
ls /empty_dir/ | xargs -n10 chown root # chown executed every 10 args or fewer
ls /empty_dir/ | xargs -L10 chown root # chown executed every 10 lines or fewer
ls /empty_dir/ | xargs -i cp {} {}.bak # every {} is replaced with the args...
Xcode 4 - “Archive” is greyed out?
...on/ToolsLanguages/Conceptual/Xcode4UserGuide/DistApps/DistApps.html#//apple_ref/doc/uid/TP40010215-CH11-DontLinkElementID_69
But I still can't get the actual archives to show up in Organizer (even though the files exist)
sh...
How do I sort strings alphabetically while accounting for value when a string is numeric?
... bool IsNumeric(string value)
{
return int.TryParse(value, out _);
}
/// <inheritdoc />
public int Compare(string s1, string s2)
{
const int S1GreaterThanS2 = 1;
const int S2GreaterThanS1 = -1;
var IsNumeric1 = IsNumeric(s1);
var Is...
How to Correctly handle Weak Self in Swift Blocks with Arguments
...://developer.apple.com/library/content/documentation/Swift/Conceptual/Swift_Programming_Language/AutomaticReferenceCounting.html
Note: I used the term closure instead of block which is the newer Swift term:
Difference between block (Objective C) and closure (Swift) in ios
...
How can I run MongoDB as a Windows service?
...r several hours, I finally did it.
Make sure that you added the <MONGODB_PATH>\bin directory to the system variable PATH
First I executed this command:
D:\mongodb\bin>mongod --remove
Then I executed this command after opening command prompt as administrator:
D:\mongodb\bin>mongod --dbpa...