大约有 48,000 项符合查询结果（耗时：0.1343秒） [XML]
Python Sets vs Lists
...
236
It depends on what you are intending to do with it.
Sets are significantly faster when it com...
How to delete duplicate lines in a file without sorting it in Unix?
...at seen[$0] == 1 after the first time a line is found and then seen[$0] == 2, and so on.
Awk evaluates everything but 0 and "" (empty string) to true. If a duplicate line is placed in seen then !seen[$0] will evaluate to false and the line will not be written to the output.
...
PHP Pass variable to next page
...cure.
Session:
//On page 1
$_SESSION['varname'] = $var_value;
//On page 2
$var_value = $_SESSION['varname'];
Remember to run the session_start(); statement on both these pages before you try to access the $_SESSION array, and also before any output is sent to the browser.
Cookie:
//One page 1...
Git pre-push hooks
...gordnungswidrig
3,01811 gold badge1515 silver badges2929 bronze badges
206
...
jsonify a SQLAlchemy result set in Flask [duplicate]
...me(self.modified_at),
# This is an example how to deal with Many2Many relations
'many2many' : self.serialize_many2many
}
@property
def serialize_many2many(self):
"""
Return object's relations in easily serializable format.
NB! Calls many2man...
How to check if click event is already bound - JQuery
...
Update 24 Aug '12: In jQuery 1.8, it is no longer possible to access the element's events using .data('events'). (See this bug for details.) It is possible to access the same data with jQuery._data(elem, 'events'), an internal data...
Text size and different android screen sizes
...i the small, normal, large and xlarge have been deprecated since Android 3.2 in favor of the following:
Declaring Tablet Layouts for Android 3.2
For the first generation of tablets running Android 3.0, the proper
way to declare tablet layouts was to put them in a directory with the
xlarge c...
Xcode debugging - displaying images
...
276
Use Quick Look to inspect images in the Xcode debugger.
Select an NSImage or UIImage in the de...
if/else in a list comprehension
...ternary operator ?: that exists in other languages. For example:
value = 123
print(value, 'is', 'even' if value % 2 == 0 else 'odd')
share
|
improve this answer
|
follow
...
How do I center a window onscreen in C#?
...
12 Answers
12
Active
...