大约有 13,065 项符合查询结果（耗时：0.0392秒） [XML]
How to center horizontally div inside parent div
...
I am assuming the parent div has no width or a wide width, and the child div has a smaller width. The following will set the margin for the top and bottom to zero, and the sides to automatically fit. This centers the div.
div#child ...
Print commit message of a given commit in git
I need a plumbing command to print the commit message of one given commit - nothing more, nothing less.
6 Answers
...
Is it possible to delete an object's property in PHP?
...
unset($a->new_property);
This works for array elements, variables, and object attributes.
Example:
$a = new stdClass();
$a->new_property = 'foo';
var_export($a); // -> stdClass::__set_state(array('new_property'...
Difference between var_dump,var_export & print_r
What is the difference between var_dump , var_export and print_r ?
2 Answers
2
...
JSR-303 @Valid annotation not working for list of child objects
...
You need to decorate addresses member of UserAddressesForm with @Valid annotation. See section 3.1.3 and 3.5.1 of JSR 303: Bean Validation. As I explained in my answer to the question Is there a standard way to enable JSR 303 B...
How to write a Ruby switch statement (case…when) with regex and backreferences?
I know that I can write a Ruby case statement to check a match against a regular expressions.
However, I'd like to use the match data in my return statement. Something like this semi-pseudocode:
...
ASP.NET web.config: configSource vs. file attributes
...tion some sections of config, like appSettings and connectionStrings , supports the attributes file and configSource .
...
Non-static method requires a target
...ave a controller action that works fine on Firefox both locally and in production, and IE locally, but not IE in production. Here is my controller action:
...
How to open the Chrome Developer Tools in a new window?
When I try to use the Chrome Developer Tools, it seems I can no longer view it in a new window.
5 Answers
...
Difference between setUp() and setUpBeforeClass()
When unit testing with JUnit, there are two similar methods, setUp() and setUpBeforeClass() . What is the difference between these methods? Also, what is the difference between tearDown() and tearDownAfterClass() ?
...