大约有 20,000 项符合查询结果（耗时：0.0390秒） [XML]
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:
...
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
...
Executing a command stored in a variable from PowerShell
I have a command that I have build and stored in a variable in PowerShell. This command works if I do a Write-Host and copy and paste into a standard cmd.exe window.
...
JavaScript :How to set a Conditional Break Point in Chrome debugger tools
...click the marker of the breakpoint and select "Edit breakpoint..." there you can set the condition.
From Chrome Developer Tools on Breakpoints at developers.google.com (Emphasis mine):
Note: All the breakpoints you have set appear under Breakpoints in the right-hand sidebar. Clicking on the ent...
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() ?
...
Bash script - variable content as a command to run
I have a Perl script that gives me a defined list random numbers that correspond to the lines of a file. Next I want to extract those lines from the file using sed .
...
Why is $$ returning the same id as the parent process?
I have problem with Bash, and I don't know why.
Under shell, I enter:
6 Answers
6
...