大约有 40,000 项符合查询结果(耗时:0.0488秒) [XML]

https://stackoverflow.com/ques... 

Is it a good practice to use try-except-else in Python?

...o, the use of exceptions in Python does not slow the surrounding code and calling code as it does in some compiled languages (i.e. CPython already implements code for exception checking at every step, regardless of whether you actually use exceptions or not). In other words, your understanding that...
https://stackoverflow.com/ques... 

What does -fPIC mean when building a shared library?

...es and independence between individual modules, but I'm not sure what it really means. Can you explain? 3 Answers ...
https://stackoverflow.com/ques... 

How to search by key=>value in a multidimensional array in PHP

Is there any fast way to get all subarrays where a key value pair was found in a multidimensional array? I can't say how deep the array will be. ...
https://stackoverflow.com/ques... 

How to test if a string is basically an integer in quotes using Ruby

...z/.match(string_to_check) #Is not a positive number else #Is all good ..continue end share | improve this answer | follow | ...
https://stackoverflow.com/ques... 

How can I pass a member function where a free function is expected?

...)(void*, int, int), void* context) { fptr(context, 17, 42); } void non_member(void*, int i0, int i1) { std::cout << "I don't need any context! i0=" << i0 << " i1=" << i1 << "\n"; } struct foo { void member(int i0, int i1) { std::cout << "memb...
https://stackoverflow.com/ques... 

Linux command to print directory structure in the form of a tree

... /proc |-- fd | `-- 3 -> /proc/15589/fd |-- fdinfo |-- net | |-- dev_snmp6 | |-- netfilter | |-- rpc | | |-- auth.rpcsec.context | | |-- auth.rpcsec.init | | |-- auth.unix.gid | | |-- auth.unix.ip | | |-- nfs4.idtoname | | |-- nfs4.nametoid | | |-- nfsd.export ...
https://stackoverflow.com/ques... 

PHP ORMs: Doctrine vs. Propel

...eing the default ORM for symfony it is better supported (even though officially the ORMs are considered equal). Furthermore I better like the way you work with queries (DQL instead of Criteria): <?php // Propel $c = new Criteria(); $c->add(ExamplePeer::ID, 20); $items = ExamplePeer::doSelect...
https://stackoverflow.com/ques... 

How Many Seconds Between Two Dates?

...Z, NN, EE, 0, 0, 0, 0); var dif = t1.getTime() - t2.getTime(); var Seconds_from_T1_to_T2 = dif / 1000; var Seconds_Between_Dates = Math.abs(Seconds_from_T1_to_T2); A handy source for future reference is the MDN site Alternatively, if your dates come in a format javascript can parse var dif = Da...
https://stackoverflow.com/ques... 

Android Fragment lifecycle over orientation changes

...mit(); } else { // do nothing - fragment is recreated automatically } Be warned though: problems will occur if you try and access Activity Views from inside the Fragment as the lifecycles will subtly change. (Getting Views from a parent Activity from a Fragment isn't easy). ...
https://stackoverflow.com/ques... 

Can anyone explain CreatedAtRoute() to me?

...ss CompanyController : Controller { private ICompanyRepository _companyRepository; public CompanyController(ICompanyRepository companyRepository) { _companyRepository = companyRepository; } [HttpGet("{id}", Name="GetCompany")] public ...