大约有 2,220 项符合查询结果(耗时:0.0208秒) [XML]

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Is there any particular difference between intval and casting to int - `(int) X`?

...ould be used as a second parameter (base 10 by default) : var_dump((int)"0123", intval("0123"), intval("0123", 8)); will get you : int 123 int 123 int 83 share | improve this answer | ...
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How do I convert Long to byte[] and back in java

...ion methods from Google Guava. Example: byte[] bytes = Longs.toByteArray(12345L); share | improve this answer | follow | ...
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Spring Boot - inject map from application.yml

...eholders being replaced. E.g. if you had a system property project.version=123 set, the example you gave in the answer would return version=123, while after setting locations it would return project.version=${project.version}. Do you know if there's a limitation of some sorts here? ...
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Differences between unique_ptr and shared_ptr [duplicate]

...ou pass it by value if you cannot copy it? – splinter123 Jun 3 '16 at 22:00 11 @splinter123: By m...
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What __init__ and self do on Python?

...iable declared inside an __init__ function: class MyClass(object): i = 123 def __init__(self): self.i = 345 a = MyClass() print(a.i) print(MyClass.i) Output: 345 123 share | ...
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Why is it slower to iterate over a small string than a small list?

...rule out Tim Peter's 10-times-upvoted answer! >>> foo = iterable[123] >>> iterable[36] is foo True These are not new objects! But this is worth mentioning: indexing costs. The difference will likely be in the indexing, so remove the iteration and just index: >>> pytho...
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Pandas - Get first row value of a given column

...ime'] = x does not work: In contrast, assignment with df.iloc[0]['bar'] = 123 does not work because df.iloc[0] is returning a copy: In [66]: df.iloc[0]['bar'] = 123 /home/unutbu/data/binky/bin/ipython:1: SettingWithCopyWarning: A value is trying to be set on a copy of a slice from a DataFrame Se...
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Renaming a virtualenv folder without breaking it

... using and so don't encounter the problem. – CoderGuy123 Nov 4 '16 at 18:06 Scratch that! Today I ran into a problem: ...
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MySQL join with where clause

... in A table which having id null in B table – Veeresh123 Aug 29 '16 at 6:57 @Veeresh123, what are A and B table ? Can ...
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Using generic std::function objects with member functions in one class

...; // Call with late supplied 'this' MyClass myInst; callable(&myInst, 123); What would the storage type look like without auto? Something like this: std::_Mem_fn_wrap<void,void (__cdecl TestA::*)(int),TestA,int> callable You can also pass this function storage to a standard function ...