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xpath find if node exists
...using xpath in Java using count():
int numberofbodies = Integer.parseInt((String) xPath.evaluate("count(/html/body)", doc));
if( numberofbodies==0) {
// body node missing
}
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iOS 7's blurred overlay effect using CSS?
...vas for rendering document as an image.
The image is converted to data-url string and it is painted as the popup's background-image.
Popup's bg is blurred by -webkit-filter:blur
Append the popup into document.
While you're dragging the popup, it changes its own background-position.
...
Can you call Directory.GetFiles() with multiple filters?
...at you understand the implications though: this will return all files in a string array and then filter that by the extensions you specify. That might not be a big issue if "C:\Path" doesn't have lot of files underneath it, but may be a memory/performance issue on "C:\" or something like that.
...
Set type for function parameters?
...ced mode you can do that:
/**
* @param {Date} myDate The date
* @param {string} myString The string
*/
function myFunction(myDate, myString)
{
//do stuff
}
See http://code.google.com/closure/compiler/docs/js-for-compiler.html
...
What is a plain English explanation of “Big O” notation?
...up them by matching color and pattern. We then exploit this to avoid doing extra work later (comparing puzzle pieces of like color to each other, not to every other single puzzle piece).
The moral of the story: a data structure lets us speed up operations. Even more, advanced data structures can l...
Parallel.ForEach() vs. foreach(IEnumerable.AsParallel())
...e correct way to use AsParallel() in your example would be
IEnumerable<string> items = ...
items.AsParallel().ForAll(item =>
{
//Do parallel stuff here
});
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grep exclude multiple strings
...ile using tail -f and want to exclude all lines containing the following strings:
7 Answers
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Convert string to Python class object?
Given a string as user input to a Python function, I'd like to get a class object out of it if there's a class with that name in the currently defined namespace. Essentially, I want the implementation for a function which will produce this kind of result:
...
Run a string as a command within a Bash script
I have a Bash script that builds a string to run as a command
8 Answers
8
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Rebase array keys after unsetting elements
...Will output:
array(1) {
[0]=> array(6) {
["name"]=> string(11) "example.zip"
["size"]=> string(9) "110726556"
["type"]=> string(28) "application/x-zip-compressed"
["deleteUrl"]=> string(28) "server/php/?file=example.zip"
...