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Best way to get child nodes
... console browser.
use native javascript. Here is and example with two 'ul' sets with the same class. You don't need to have your 'ul' list all in one line to avoid white space just use your array count to jump over white space.
How to get around white space with querySelector() then childNodes[] j...
Setup RSpec to test a gem (not Rails)
It is pretty easy with the added generator of rspec-rails to setup RSpec for testing a Rails application. But how about adding RSpec for testing a gem in development?
I am not using jeweler or such tools. I just used Bundler ( bundle gem my_gem ) to setup the structure for the new gem and edit the *...
List all environment variables from the command line
...
Just do:
SET
You can also do SET prefix to see all variables with names starting with prefix.
For example, if you want to read only derbydb from the environment variables, do the following:
set derby
...and you will get the fo...
JavaScript inheritance: Object.create vs new
...uted with the new keyword. This usually is not intended - you only want to set up the prototype chain. In some cases it even could cause serious issues because you actually instantiate an object, whose private-scoped variables are shared by all MyClass instances as they inherit the same privileged m...
Replace a value in a data frame based on a conditional (`if`) statement
... Short addition: The usage of %in% only really helps if you have a set on the right side, as c("B","C"). Doing junk$nm[junk$nm == "B"] is the better way.
– Thilo
Apr 28 '11 at 20:14
...
Why are Perl 5's function prototypes bad?
...ignatures does run time argument counting, variable assigning, and default setting:
use v5.20;
use feature qw(signatures);
no warnings qw(experimental::signatures);
animals( 'Buster', 'Nikki', 'Godzilla' );
sub animals ($cat, $dog, $lizard = 'Default reptile') {
say "The cat is $cat";
sa...
github: No supported authentication methods available
...e, put the following line of code:
GIT_SSH="/usr/bin/ssh.exe"
This will set the GIT_SSH environment variable to use the ssh client included with git.
The .profile script gets executed when you start your Git Bash command line.
Edit:
This is my .profile. It will ask you for your password the fir...
How do I verify jQuery AJAX events with Jasmine?
... url: "/products/" + id,
contentType: "application/json; charset=utf-8",
dataType: "json"
});
}
For Jasmine 2.0 use instead:
expect($.ajax.calls.mostRecent().args[0]["url"]).toEqual("/products/123");
as noted in this answer
Here is a similar unit test that verifies yo...
Replacing NAs with latest non-NA value
...hmarked my improved function and all the other entries here. For the basic set of features, tidyr::fill is fastest while also not failing the edge cases. The Rcpp entry by @BrandonBertelsen is faster still, but it's inflexible regarding the input's type (he tested edge cases incorrectly due to a mis...
Differences between Perl and PHP [closed]
... 'bar';
in each language. In Perl, you can even do $foo ||= 'default' to set $foo to a value if it's not already set. The shortest way of doing this in PHP is $foo = isset($foo) ? $foo : 'default'; (Update, in PHP 7.0+ you can do $foo = $foo ?? 'default')
Perl variable names indicate built-in type...