大约有 40,000 项符合查询结果（耗时：0.0397秒） [XML]
Git push rejected after feature branch rebase
...age. (Name any of the following: grumpy/fired employees, own idiocy, tired&overworked ‘decisions’... ).
– Frank Nocke
Nov 6 '15 at 9:55
...
Why does += behave unexpectedly on lists?
...
The general answer is that += tries to call the __iadd__ special method, and if that isn't available it tries to use __add__ instead. So the issue is with the difference between these special methods.
The __iadd__ special method is for an in-place addition, that i...
Knight's Shortest Path on Chessboard
... t = x;x = y; y = t;
}
// 2 corner cases
if(x==1 && y == 0){
return 3;
}
if(x==2 && y == 2){
return 4;
}
// main formula
var delta = x-y;
if(y>delta){
return delta - 2*Math.floor((delta-y)/3);
...
Get class name of object as string in Swift
...ribing: YourType.self)
String from a type:
String(describing: self)
Example:
struct Foo {
// Instance Level
var typeName: String {
return String(describing: Foo.self)
}
// Instance Level - Alternative Way
var otherTypeName: String {
let thisType = type(of:...
How can I generate Unix timestamps?
Related question is "Datetime To Unix timestamp", but this question is more general.
18 Answers
...
Which is faster : if (bool) or if(int)?
...32-bit argument that g receives, and compares it with cmpb. In the first example, the int argument uses the full 32 bits that were pushed onto the stack, so it simply compares against the whole thing with cmpl.
share
...
Can I bind an array to an IN() condition?
...think soulmerge is right. you'll have to construct the query-string.
<?php
$ids = array(1, 2, 3, 7, 8, 9);
$inQuery = implode(',', array_fill(0, count($ids), '?'));
$db = new PDO(...);
$stmt = $db->prepare(
'SELECT *
FROM table
WHERE id IN(' . $inQuery . ')'
);
// bindvalu...
Composer: how can I install another dependency without updating old ones?
...sues with Laravel and mcrypt: check that it's properly enabled in your CLI php.ini. If php -m doesn't list mcrypt then it's missing.
Important: Don't forget to specify new/package when using composer update! Omitting that argument will cause all dependencies, as well as composer.lock, to be updated...
Fastest way to replace NAs in a large data.table
...wonk I guess your DT has columns of type logical, unlike the create_dt() example for this test. Change the 4th argument of the set() call (which is 0 in your example and type double in R) to FALSE and it should work without warning.
– Matt Dowle
Jan 5 '15 at 10...
In HTML I can make a checkmark with ✓ . Is there a corresponding X-mark?
...ectly. Here's a good link to more symbols: danshort.com/HTMLentities/index.php?w=dingb
– Nathan Prather
Aug 26 '12 at 15:25
1
...