大约有 23,000 项符合查询结果(耗时:0.0535秒) [XML]

https://stackoverflow.com/ques... 

What's the maximum value for an int in PHP?

...automatically determine when this switch to floating point needs to happen based on whether the result value of a calculation can't be represented as an integer. PHP has no support for "unsigned" integers as such, limiting the maximum value of all integers to the range of a "signed" integer. ...
https://stackoverflow.com/ques... 

Where do “pure virtual function call” crashes come from?

...bject hasn't been constructed or has already been destroyed), it calls the base class version, which in the case of a pure virtual function, doesn't exist. (See live demo here) class Base { public: Base() { doIt(); } // DON'T DO THIS virtual void doIt() = 0; }; void Base::doIt() { s...
https://stackoverflow.com/ques... 

How to measure time in milliseconds using ANSI C?

...igh-resolution clock sources). The second way provides a (date)time value based on the current system clock value. It may also have a high resolution, but it has one major drawback: this kind of time value can be affected by different system time adjustments, i.e. time zone change, daylight saving ...
https://stackoverflow.com/ques... 

How do I check OS with a preprocessor directive?

I need my code to do different things based on the operating system on which it gets compiled. I'm looking for something like this: ...
https://stackoverflow.com/ques... 

Google Authenticator implementation in Python

...ected with incorrect value of secret key (it must be correct parameter for base64.b32decode() function). Below I post full working solution with explanation on how to use it. Code The following code is enough. I have also uploaded it to GitHub as separate module called onetimepass (available here...
https://stackoverflow.com/ques... 

Link to all Visual Studio $ variables

...tMetadataClHostArchDir) $(AppxManifestMetadataCITargetArchDir) $(Attach) $(BaseIntermediateOutputPath) $(BuildingInsideVisualStudio) $(CharacterSet) $(CLRSupport) $(CommonProgramFiles) $(CommonProgramW6432) $(COMPUTERNAME) $(ComSpec) $(Configuration) $(ConfigurationType) $(CppWinRT_IncludePath) $(Cr...
https://stackoverflow.com/ques... 

The application was unable to start correctly (0xc000007b)

... based on the Windows Error Codes (google.de/…), this Error Code means: 0xC000007B STATUS_INVALID_IMAGE_FORMAT. – mox May 8 '12 at 5:43 ...
https://stackoverflow.com/ques... 

How can I test a Windows DLL file to determine if it is 32 bit or 64 bit? [duplicate]

... Anybody who uses MingW and doesn't realize it, this is also a Cygwin based thing, and it has this too. – Warren P Mar 16 '11 at 17:58 4 ...
https://stackoverflow.com/ques... 

Are types like uint32, int32, uint64, int64 defined in any stdlib header?

... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers. Draft saved Draft discarded ...
https://stackoverflow.com/ques... 

How to create a GUID/UUID in Python

... they keep updating) >>> import uuid >>> # make a UUID based on the host ID and current time >>> uuid.uuid1() UUID('a8098c1a-f86e-11da-bd1a-00112444be1e') >>> # make a UUID using an MD5 hash of a namespace UUID and a name >>> uuid.uuid3(uuid.NAMESPACE_...