大约有 31,840 项符合查询结果（耗时：0.0336秒） [XML]
Why is sizeof considered an operator?
... would have no way of determining the size
in C, functions can only accept one type of argument; sizeof() needs to accept all sorts of differnet things (variables as well as types! You can't pass a type to a function in C)
calling a function involves making a copy of the arguments and other unnecess...
Check if a number has a decimal place/is a whole number
...decimal point programmatically, unless it is expressed as a string. Also, none of the other solutions got a down vote for not tackling that ;-)
– Andy E
Sep 1 '11 at 16:58
1
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Check variable equality against a list of values
...
I like this one. It would even be possible to create a 'contains' function through prototype I guess, so as to eliminate the use of > -1.
– pimvdb
Jan 18 '11 at 19:30
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How can you strip non-ASCII characters from a string? (in C#)
...
One advantage is that I can easily replace ASCII with ISO 8859-1 or another encoding :)
– Akira Yamamoto
Jul 4 '13 at 3:34
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Most efficient way to determine if a Lua table is empty (contains no entries)?
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One possibility would be to count the number of elements, by using the metatable "newindex" key. When assigning something not nil, increment the counter (the counter could live in the metatable as well) and when assigning nil...
Nested using statements in C#
... You're right, and in real code I would use another approach (probably the one from Gavin H). This is just a less preferrable alternative.
– Botz3000
Aug 19 '15 at 7:01
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What exactly does @synthesize do?
...diting legacy code I want to make additional notes to the existing answers one needs to be aware of.
Even with a newer compiler version it sometimes does make a difference if you omit @synthesize propertyName or not.
In the case you declare an instance variable without underscore while still synth...
Set NOW() as Default Value for datetime datatype?
...ally updates whenever the record is modified. Unfortunately, however, only one auto-updated TIMESTAMP field can exist per table.
CREATE TABLE mytable (
mydate TIMESTAMP
)
See: http://dev.mysql.com/doc/refman/5.1/en/create-table.html
If you want to prevent MySQL from updating the timestamp valu...
Best way to give a variable a default value (simulate Perl ||, ||= )
...t value'; It says that in the answer... just pointing it out again for anyone that skims it. :-D
– Brad
Jun 2 '14 at 15:00
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How do I convert a IPython Notebook into a Python file via commandline?
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If you DO want one every save, in jupyter you can trigger nbconvert via pre- or post-save hooks: ContentsManager.pre_save_hook abd FileContentsManager.post_save_hook. You would add a post-save hook jupyter nbconvert --to script [notebook]
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