大约有 40,740 项符合查询结果（耗时：0.0442秒） [XML]
PHP Composer update “cannot allocate memory” error (using Laravel 4)
I just can't solve this one.
26 Answers
26
...
HttpClient not supporting PostAsJsonAsync method C#
I am trying to call a web API from my web application. I am using .Net 4.5 and while writing the code I am getting the error HttpClient does not contain a definition PostAsJsonAsync method.
...
JavaScript isset() equivalent
In PHP you can do if(isset($array['foo'])) { ... } . In JavaScript you often use if(array.foo) { ... } to do the same, but this is not exactly the same statement. The condition will also evaluate to false if array.foo does exists but is false or 0 (and probably other values as well).
...
How to identify CAAnimation within the animationDidStop delegate?
I had a problem where I had a series of overlapping CATransition / CAAnimation sequences, all of which I needed to perform custom operations when the animations stopped, but I only wanted one delegate handler for animationDidStop.
...
Is it a bad practice to use break in a for loop? [closed]
Is it a bad practice to use break statement inside a for loop ?
19 Answers
19
...
How do I create a constant in Python?
Is there a way to declare a constant in Python? In Java we can create constant values in this manner:
41 Answers
...
Run PHP Task Asynchronously
I work on a somewhat large web application, and the backend is mostly in PHP. There are several places in the code where I need to complete some task, but I don't want to make the user wait for the result. For example, when creating a new account, I need to send them a welcome email. But when they h...
How do I pass multiple attributes into an Angular.js attribute directive?
I have an attribute directive restricted as follows:
5 Answers
5
...
How do I make a placeholder for a 'select' box?
I'm using placeholders for text inputs which is working out just fine. But I'd like to use a placeholder for my selectboxes as well. Of course I can just use this code:
...