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How to convert comma-separated String to List?
... "[\\s,]+" will also split on internal space within a comma separated token, it will treat both whitespace as a delimiter even when a comma is not present, instead of a comma plus any number of surrounding whitespace. "\\s*(,\\s*)+" will trim whitespace only around comma separated tokens, and a...
Creating an array of objects in Java
...is:
A a1;
A a2;
A a3;
A a4;
Now you couldn't do a1.someMethod() without allocating a1 like this:
a1 = new A();
Similarly, with the array you need to do this:
a[0] = new A();
...before using it.
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What is the difference between visibility:hidden and display:none?
...h you can still interact with it through the dom). There will be no space allocated for it between the other tags.
visibility:hidden means that unlike display:none, the tag is not visible, but space is allocated for it on the page. The tag is rendered, it just isn't seen on the page.
For exampl...
iPhone UITextField - Change placeholder text color
...olor blackColor];
textField.attributedPlaceholder = [[NSAttributedString alloc] initWithString:placeholderText attributes:@{NSForegroundColorAttributeName: color}];
} else {
NSLog(@"Cannot set placeholder text's color, because deployment target is earlier than iOS 6.0");
// TODO: Add fall-back...
What exactly does an #if 0 … #endif block do?
...
When the preprocessor sees #if it checks whether the next token has a non-zero value. If it does, it keeps the code around for the compiler. If it doesn't, it gets rid of that code so the compiler never sees it.
If someone says #if 0 they are effectively commenting out the code s...
What does “async: false” do in jQuery.ajax()?
... where one have to set async to false, for the code to work properly.
var phpData = (function get_php_data() {
var php_data;
$.ajax({
url: "http://somesite/v1/api/get_php_data",
async: false,
//very important: else php_data will be returned even before we get Json from the url
...
How to generate a random string of a fixed length in Go?
...n terms of speed, and it will definitely help in terms of memory usage and allocations.
func RandStringBytesMaskImprSrcSB(n int) string {
sb := strings.Builder{}
sb.Grow(n)
// A src.Int63() generates 63 random bits, enough for letterIdxMax characters!
for i, cache, remain := n-1, sr...
Tactics for using PHP in a high-load site
... (sigh) an alien that has just landed on the planet, albeit one that knows PHP and a few optimisation techniques.
23 Answer...
When do I use the PHP constant “PHP_EOL”?
When is it a good idea to use PHP_EOL ?
19 Answers
19
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Converting a UNIX Timestamp to Formatted Date String
Using PHP, I want to convert UNIX timestamps to date strings similar to this: 2008-07-17T09:24:17Z
9 Answers
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