大约有 10,900 项符合查询结果（耗时：0.0238秒） [XML]
Creating the Singleton design pattern in PHP5
...fact2;
But:
$fact = new UserFactory()
Throws an error.
See http://php.net/manual/en/language.variables.scope.php#language.variables.scope.static to understand static variable scopes and why setting static $inst = null; works.
...
Difference between Repository and Service Layer?
...sers() of IUserService could return only ones, user has access to.
In ASP.NET MVC + EF + SQL SERVER, I have this flow of communication:
Views <- Controllers -> Service layer -> Repository layer -> EF -> SQL Server
Service layer -> Repository layer -> EF This part opera...
How do I implement a callback in PHP?
...user_func and call_user_func_array support all the above.
See: http://php.net/manual/en/language.types.callable.php
Notes/Caveats:
If the function/class is namespaced, the string must contain the fully-qualified name. E.g. ['Vendor\Package\Foo', 'method']
call_user_func does not support passing...
Can you determine if Chrome is in incognito mode via a script?
...e FileSystem API is disabled in incognito mode. Check out https://jsfiddle.net/w49x9f1a/ when you are and aren't in incognito mode.
Sample code:
var fs = window.RequestFileSystem || window.webkitRequestFileSystem;
if (!fs) {
console.log("check failed?");
} else {
fs(windo...
In a .csproj file, what is for?
...
Not true. At least in the new dot net cli. if you have an item declared as None with a CopyToOutputDirectory set to true it will get published in a dotnet publish
– disklosr
Jan 3 '19 at 10:14
...
How to resize images proportionally / keeping the aspect ratio?
... and it's trivial: just set its max-width and max-height to 100%. jsfiddle.net/9EQ5c
– Dan Dascalescu
Aug 31 '12 at 21:54
10
...
Is there an easy way to return a string repeated X number of times?
...
If you're using .NET 4.0, you could use string.Concat together with Enumerable.Repeat.
int N = 5; // or whatever
Console.WriteLine(string.Concat(Enumerable.Repeat(indent, N)));
Otherwise I'd go with something like Adam's answer.
The reaso...
Select all elements with “data-” attribute without using jQuery
...Not sure who dinged me with a -1, but here's the proof.
http://jsfiddle.net/D798K/2/
share
|
improve this answer
|
follow
|
...
Insert new item in array on any position in PHP
...
Also in PHP manual, example #1: php.net/manual/en/function.array-splice.php
– marcovtwout
Dec 3 '12 at 13:16
3
...
cleanest way to skip a foreach if array is empty [duplicate]
...ctions return different types. Assume you request some JSON array over the network. You know that the produced JSON is always an array. So json_decode() will always return an array? No. A network timeout might occur, the received JSON will be incomplete and json_decode will return NULL. This is not ...