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How to determine if a number is odd in JavaScript
...-shadow: 1px 1px 2px #CE5937;" ></div>
If you don't want a string return value, but rather a boolean one, use this:
var isOdd = function(x) { return x & 1; };
var isEven = function(x) { return !( x & 1 ); };
...
How do I fire an event when a iframe has finished loading in jQuery?
...
setTimeout() string argument should be avoided: setTimeout(WaitForIFrame, 200);
– Stefan Majewsky
Feb 20 '13 at 9:35
...
What is the difference between declarative and imperative programming? [closed]
...eclarative programming is to invent new domain specific languages (DSL):
String Search: Regular Expression instead of custom imperative code
React.js: JSX instead of direct DOM manipulation
AWS CloudFormation: YAML instead of CLI
Relational Database: SQL instead of older read–write APIs such as ...
What is the difference between a cer, pvk, and pfx file?
...2 == "PKCS12"
fully encrypted
.pem == .cer == .cert == "PEM"
base-64 (string) encoded X509 cert (binary) with a header and footer
base-64 is basically just a string of "A-Za-z0-9+/" used to represent 0-63, 6 bits of binary at a time, in sequence, sometimes with 1 or 2 "=" characters at the ve...
Booleans, conditional operators and autoboxing
...Value, it will throw NPE of course.
public static void main(java.lang.String[]) throws java.lang.Exception;
descriptor: ([Ljava/lang/String;)V
flags: ACC_PUBLIC, ACC_STATIC
Code:
stack=2, locals=2, args_size=1
0: invokestatic #2 // Method r...
UICollectionView inside a UITableViewCell — dynamic height?
...xtension:
extension UIView {
func constraint(byIdentifier identifier: String) -> NSLayoutConstraint? {
return constraints.first(where: { $0.identifier == identifier })
}
}
NOTE: You will need to set the identifier on these constraints in your storyboard, or wherever they are be...
.bashrc/.profile is not loaded on new tmux session (or window) — why?
... ~/.bashrc.
default-command shell-command
The default is an empty string, which instructs tmux to create a login shell using the value of the default-shell option.
Init files for Bash,
login mode:
/etc/profile
~/.bash_profile, ~/.bash_login, ~/.profile (only first one that exists)
in...
Access Container View Controller from Parent iOS
...(void) prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
NSString * segueName = segue.identifier;
if ([segueName isEqualToString: @"alertview_embed"]) {
AlertViewController * childViewController = (AlertViewController *) [segue destinationViewController];
AlertView *...
How do I use Node.js Crypto to create a HMAC-SHA1 hash?
... // can't read from the stream until you call end()
hash = hmac.read().toString('hex'); // read out hmac digest
console.log("Method 1: ", hash);
// Method 2 - Using update and digest:
hmac = crypto.createHmac(algorithm, secret);
hmac.update(text);
hash = hmac.digest('hex');
console.log("Method...
How do I view all commits for a specific day?
...ience!
The output below can be expanded/customised with pretty=format:<string> placeholders:
git log --pretty='format:%H %an %ae %ai' | grep 2013-11-12
Not 100% immune to errors as the same string could have been entered by a user. But acceptable depending on which placeholders are used. T...