大约有 15,461 项符合查询结果（耗时：0.0302秒） [XML]
How can I pass a parameter to a setTimeout() callback?
...(function() { console.write(i); }, 0); } this will log "100" a 100 times (tested on FF). Current answer helps avoiding this.
– root
Dec 14 '12 at 17:21
...
Deleting lines from one file which are in another file
... 1 2 100000); do echo "$i"; done|sort --random-sort > file2
$ time ruby test.rb > ruby.test
real 0m0.639s
user 0m0.554s
sys 0m0.021s
$time sort file1 file2|uniq -u > sort.test
real 0m2.311s
user 0m1.959s
sys 0m0.040s
$ diff <(sort -n ruby.test) <(sort -n sort....
Python read-only property
...y
... def a(self):
... return self._a
...
>>> a = A('test')
>>> a.a
'test'
>>> a.a = 'pleh'
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
AttributeError: can't set attribute
...
How to remove the first character of string in PHP?
...r[0] = null;
// replaced by �, but ok for echo
Exec time for 1.000.000 tests : 0.39602184295654 sec
Remove the first letter with substr()
$str = "hello";
$str = substr($str, 1);
Exec time for 1.000.000 tests : 5.153294801712 sec
Remove the first letter with ltrim()
$str = "hello";
$str...
How to find first element of array matching a boolean condition in JavaScript?
...hat index) it was met. So we have to amend it a little:
function find(arr, test, ctx) {
var result = null;
arr.some(function(el, i) {
return test.call(ctx, el, i, arr) ? ((result = el), true) : false;
});
return result;
}
var result = find(someArray, isNotNullNorUndefined);...
C# 4 default parameter values: How to assign a default DateTime/object value? [duplicate]
...r function, then you can initialize it to any value you want.
static void test(DateTime? dt = null)
{
if (dt == null)
{
dt = new DateTime(1981, 03, 01);
}
//...
}
You can call it with a named parameter like this:
test(dt: new DateTime(2010, 03, 01));
And with the defau...
Why does `a == b or c or d` always evaluate to True?
...= "Inbar":
Compose a sequence of valid values, and use the in operator to test for membership:
if name in {"Kevin", "Jon", "Inbar"}:
In general of the two the second should be preferred as it's easier to read and also faster:
>>> import timeit
>>> timeit.timeit('name == "Kevin" ...
What does jQuery.fn mean?
...rom the constructor's prototype.
A simple constructor function:
function Test() {
this.a = 'a';
}
Test.prototype.b = 'b';
var test = new Test();
test.a; // "a", own property
test.b; // "b", inherited property
A simple structure that resembles the architecture of jQuery:
(function() {
var ...
How to check if a file is a valid image file?
...
That won't be sufficient if he's really testing for "valid" images; the presence of a magic number doesn't guarantee that the file hasn't been truncated, for example.
– Ben Blank
May 20 '09 at 18:11
...
C# - How to get Program Files (x86) on Windows 64 bit
...
Why this test : 8 == IntPtr.Size ?
– Florian
Oct 7 '11 at 11:30
1
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