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StringBuilder vs String concatenation in toString() in Java
...t hugeArray contains thousands of strings, code like this:
...
String result = "";
for (String s : hugeArray) {
result = result + s;
}
is very time- and memory-wasteful compared with:
...
StringBuilder sb = new StringBuilder();
for (String s : hugeArray) {
sb.append(s);
}
String result =...
How to send file contents as body entity using cURL
...a file's contents as the body entity of the POST. I have tried using -d </path/to/filename> as well as other variants with type info like --data </path/to/filename> --data-urlencode </path/to/filename> etc... the file is always attached. I need it as the body entity.
...
Good way of getting the user's location in Android
...SCheckMilliSecsFromPrefs();
boolean gpsIsOld = (gpslocation.getTime() < old);
boolean networkIsOld = (networkLocation.getTime() < old);
// gps is current and available, gps is better than network
if (!gpsIsOld) {
Log.d(TAG, "Returning current GPS Location");
ret...
Positive Number to Negative Number in JavaScript?
...wever, that for your code
if($this.find('.pdxslide-activeSlide').index() < slideNum-1){ slideNum = -slideNum }
console.log(slideNum)
If the index found is 3 and slideNum is 3,
then 3 < 3-1 => false
so slideNum remains positive??
It looks more like a logic error to me.
...
How to prevent page scrolling when scrolling a DIV element?
...pdate 2: My solution is based on disabling the browser's native scrolling altogether (when cursor is inside the DIV) and then manually scrolling the DIV with JavaScript (by setting its .scrollTop property). An alternative and IMO better approach would be to only selectively disable the browser's scr...
GitHub Error Message - Permission denied (publickey)
... and branch information. Setting the remote for https: url = github.com/<yourGitUserName>/<yourGitProject>.git While for git+ssh: url = git@github.com:<yourGitUserName>/<yourGitProject>.git Having the wrong url causes the public-key permission denied error which is...
When to use self over $this?
...rect usage of $this and self for non-static and static member variables:
<?php
class X {
private $non_static_member = 1;
private static $static_member = 2;
function __construct() {
echo $this->non_static_member . ' '
. self::$static_member;
}
}
new X();
?&...
Why does C++11's lambda require “mutable” keyword for capture-by-value, by default?
...
It requires mutable because by default, a function object should produce the same result every time it's called. This is the difference between an object orientated function and a function using a global variable, effectively.
...
How can I get Visual Studio 2008 Windows Forms designer to render a Form that implements an abstract
...ys design in debug mode.
The designer will always run against the code built in the current mode, so you cannot use the designer in release mode. However, as long as you design in debug mode and release the code built in release mode, you are good to go.
The only surefire solution would be if you...
What are invalid characters in XML
...
The only illegal characters are &, < and > (as well as " or ' in attributes).
They're escaped using XML entities, in this case you want &amp; for &.
Really, though, you should use a tool or library that writes XML for you and abstracts this kind...