大约有 44,938 项符合查询结果(耗时:0.0549秒) [XML]
how do I check in bash whether a file was created more than x time ago?
...follow
|
edited Jun 9 at 21:47
answered Feb 16 '09 at 9:36
...
Do the parentheses after the type name make a difference with new?
...ing" article.
Sometimes the memory returned by the new operator will be initialized, and sometimes it won't depending on whether the type you're newing up is a POD (plain old data), or if it's a class that contains POD members and is using a compiler-generated default constructor.
In C++1998 ther...
Wait for page load in Selenium
How do you make Selenium 2.0 wait for the page to load?
47 Answers
47
...
What's the difference between ContentControl and ContentPresenter?
...control templates to display content.
ContentControl, when used directly (it's supposed to be used as a base class), has a control template that uses ContentPresenter to display it's content.
My rules of thumb (not applicable in every case, use your judgment):
Inside ControlTemplate use ContentP...
Python's many ways of string formatting — are the older ones (going to be) deprecated?
...% strings, there's no surviving plan to ever deprecate the latter.
In commit Issue #14123: Explicitly mention that old style % string formatting has caveats but is not going away any time soon., inspired by issue Indicate that there are no current plans to deprecate printf-style formatting, the doc...
How do you serialize a model instance in Django?
... object and that's all what django serializers need to correctly serialize it, eg.:
from django.core import serializers
# assuming obj is a model instance
serialized_obj = serializers.serialize('json', [ obj, ])
share
...
Errors: “INSERT EXEC statement cannot be nested.” and “Cannot use the ROLLBACK statement within an I
...
broken link OR unresponsive site.
– SouravA
Mar 8 '18 at 15:13
6
...
Ruby on Rails: Where to define global constants?
I'm just getting started with my first Ruby on Rails webapp. I've got a bunch of different models, views, controllers, and so on.
...
What's the best way to parse command line arguments? [closed]
... more information.
As other people pointed out, you are better off going with optparse over getopt. getopt is pretty much a one-to-one mapping of the standard getopt(3) C library functions, and not very easy to use.
optparse, while being a bit more verbose, is much better structured and simpler t...
Undefined symbols for architecture i386: _OBJC_CLASS_$_SKPSMTPMessage", referenced from: error
...hases" tab of your target. Normally Xcode does this for you, but sometimes it loses the plot and you need to add the .m file manually.
To do this:
TargetSettings -> Build Phases -> Compile Sources -> add your .m class ->Build and Run
...
