大约有 3,000 项符合查询结果（耗时：0.0281秒） [XML]
How to query as GROUP BY in django?
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An easy solution, but not the proper way is to use raw SQL:
results = Members.objects.raw('SELECT * FROM myapp_members GROUP BY designation')
Another solution is to use the group_by property:
query = Members.objects.all().query
query.group_by = ['designation']
results = Q...
Removing whitespace between HTML elements when using line breaks
...t ignores the word spacing regardless of the value). So besides this I add letter-spacing: -.31em to the parent and letter-spacing: normal to the children. This fraction of an em is the size of the space ONLY IF your em size is standardized. Firefox, in turn, ignores negative values for letter-spaci...
How to check that a string is a palindrome using regular expressions?
...tate machine is composed of nodes and edges. Each edge is annotated with a letter from a finite alphabet. One or more nodes are special "accepting" nodes and one node is the "start" node. As each letter is read from a given word we traverse the given edge in the machine. If we end up in an accepting...
Unicode equivalents for \w and \b in Java regular expressions?
...regex implementations interpret the \w character class shorthand as "any letter, digit, or connecting punctuation" (usually: underscore). That way, a regex like \w+ matches words like hello , élève , GOÄ_432 or gefräßig .
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Android Notification Sound
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Just put your sound file in the Res\raw\siren.mp3 folder, then use this code:
For Custom Sound:
Notification notification = builder.build();
notification.sound = Uri.parse("android.resource://"
+ context.getPackageName() + "/" + R.raw.siren);
Fo...
How to remove the first character of string in PHP?
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Exec time for the 3 answers :
Remove the first letter by replacing the case
$str = "hello";
$str[0] = "";
// $str[0] = false;
// $str[0] = null;
// replaced by �, but ok for echo
Exec time for 1.000.000 tests : 0.39602184295654 sec
Remove the first letter with sub...
How to printf “unsigned long” in C?
...e we gave the length modifier l, it then accepts an unsigned long int. The letters must be in that order: percent, length, conversion. (There are a few more options, such as width and precision, that you can add. See the man page, as it documents all this precisely!)
– Thanatos...
uppercase first character in a variable with bash
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@CMCDragonkai: To lowercase the first letter, use "${foo,}". To lowercase all the letters, use "${foo,,}". To uppercase all the letters, use "${foo^^}".
– Steve
Dec 16 '15 at 21:37
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UITextField auto-capitalization type - iPhone App
...ay to set the autocapitalizationType for a UITextField so that the first letter of each word is capitalized by default?
7...
Error handling in getJSON calls
...k, Flask's jsonify f and SQLAlchemy)
try:
snip = Snip.query.filter_by(user_id=current_user.get_id(), id=snip_id).first()
db.session.delete(snip)
db.session.commit()
return jsonify(success=True)
except Exception, e:
logging.debug(e)
return jsonify(error="Sorry, we couldn't de...