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What is the difference between self::$bar and static::$bar in PHP?
...
{
protected static $bar = 'parent value';
public static function test()
{
var_dump('I am your father');
var_dump('self:: here means '.self::$bar);
var_dump('static:: here means '.static::$bar);
}
}
class Bar extends Foo
{
protected static $bar = 'chil...
User recognition without cookies or local storage
... tools
You might consider building a Data Profile, then using Probability tests to identify a Probable User. A profile useful for this can be generated by some combination of the following:
IP Address
Real IP Address
Proxy IP Address (users often use the same proxy repeatedly)
Cookies
HTTP C...
Skip List vs. Binary Search Tree
... locked.
Update from Jon Harrops comments
I read Fraser and Harris's latest paper Concurrent programming without locks. Really good stuff if you're interested in lock-free data structures. The paper focuses on Transactional Memory and a theoretical operation multiword-compare-and-swap MCAS. B...
Which MySQL data type to use for storing boolean values
...
@Walter: This is easy to test, e.g SELECT 'foo' AS bar FROM dual WHERE -7. The expression -7 is evaluated in a boolean context, and the query returns a row. We can test with 0, or any expression that evaluates to integer value 0, and no row is retu...
How to convert image to byte array
...)
{
// Correct a strange glitch that has been observed in the test program when converting
// from a PNG file image created by CopyImageToByteArray() - the dpi value "drifts"
// slightly away from the nominal integer value
bm.SetResolution((int)(bm.Horizontal...
Switch statement for string matching in JavaScript
...dn't recommend it in most situations. Here's how (live example):
function test(str) {
switch (true) {
case /xyz/.test(str):
display("• Matched 'xyz' test");
break;
case /test/.test(str):
display("• Matched 'test' test");
break;
case /ing/.te...
Swift: Pass array by reference?
...
Something like
var a : Int[] = []
func test(inout b : Int[]) {
b += [1,2,3,4,5]
}
test(&a)
println(a)
???
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Build project into a JAR automatically in Eclipse
... in target folder; it should also build a JAR automatically and copy the latest JAR at some or a specific location.
7 Answe...
How to check whether an object is a date?
...t this is a better method:
Object.prototype.is = function() {
var test = arguments.length ? [].slice.call(arguments) : null
,self = this.constructor;
return test ? !!(test.filter(function(a){return a === self}).length)
: (this.constructor.name ||
...
How do I check if a given string is a legal/valid file name under Windows?
...rograms that don't use that syntax have real problems dealing with it... (Tested on XP)
– user9876
Dec 2 '09 at 13:19
9
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