大约有 47,000 项符合查询结果（耗时：0.0549秒） [XML]
NSPredicate: filtering objects by day of NSDate property
...del with an NSDate property. I want to filter the database by day. I assume the solution will involve an NSPredicate , but I'm not sure how to put it all together.
...
Set environment variables from file of key/value pairs
...o I export a set of key/value pairs from a text file into the shell environment?
33 Answers
...
String slugification in Python
...
There is a python package named python-slugify, which does a pretty good job of slugifying:
pip install python-slugify
Works like this:
from slugify import slugify
txt = "This is a test ---"
r = slugify(txt)
self.assertEquals(r, "this-is-a-test")
txt...
Django: Redirect to previous page after login
...e clicked the login link in the first place.
I'm guessing that I have to somehow pass the url of the current page to the view that handles the login form but I can't really get it to work.
...
Collections.emptyList() vs. new instance
...yList() returns an immutable list, i.e., a list to which you cannot add elements. (Same applies to the List.of() introduced in Java 9.)
In the rare cases where you do want to modify the returned list, Collections.emptyList() and List.of() are thus not a good choices.
I'd say that returning an immu...
Exiting from python Command Line
...ter, so they made the string representation of the exit function a helpful message. You can check this behaviour by typing str(exit) or even print exit.
share
|
improve this answer
|
...
Cannot find Dumpbin.exe
...ommand prompt with the PATH set up properly. Look for an icon in the start menu that says something like "Visual C++ 2005 Command Prompt". You should be able to run dumpbin (and all the other command line tools) from there.
...
PHP array delete by value (not key)
...earch() and unset, try the following:
if (($key = array_search($del_val, $messages)) !== false) {
unset($messages[$key]);
}
array_search() returns the key of the element it finds, which can be used to remove that element from the original array using unset(). It will return FALSE on failure, ...
In what cases will HTTP_REFERER be empty
...what circumstances does this happen? If I get an empty one, does it always mean that the user changed it? Is getting an empty one the same as getting a null one? and under what circumstances do I get that too?
...
Retrieving Android API version programmatically
...
As described in the Android documentation, the SDK level (integer) the phone is running is available in:
android.os.Build.VERSION.SDK_INT
The class corresponding to this int is in the android.os.Build.VERSION_CODES class.
Code example:
if (android.os.Bu...