大约有 40,000 项符合查询结果(耗时:0.0657秒) [XML]

https://stackoverflow.com/ques... 

Detecting programming language from a snippet

...nd the code so I made a new one. It's a bit simplistic but it works for my tests. Currently if you feed it much more Python code than Ruby code it's likely to say that this code: def foo puts "hi" end is Python code (although it really is Ruby). This is because Python has a def keyword too. So...
https://stackoverflow.com/ques... 

Explain which gitignore rule is ignoring my file

...shed series of commits which apply to today's upstream master branch. The test suite is 99% complete, but I haven't finished handling of the --stdin option yet. Hopefully I'll manage that this weekend, and then submit my patches to the git mailing list. In the meantime, I'd definitely welcome tes...
https://stackoverflow.com/ques... 

Youtube iframe wmode issue

...=opaque to the URL seems to solve this problem for me, although I have not tested it in IE yet. For those of you having troubles with the previously proposed solution, note that an inital ampersand will only work if you are already supplying other arguments to the URL. The first argument must have ...
https://stackoverflow.com/ques... 

Is it possible to reference one CSS rule within another?

... } }); return includes; } and equivalent css: .test { background-color: yellow; } .productBox, .imageBox { --inherits: .test; display: inline-block; } and equivalent HTML : <div class="imageBox"></div> I tested it and wor...
https://stackoverflow.com/ques... 

Why there can be only one TIMESTAMP column with CURRENT_TIMESTAMP in DEFAULT clause?

...gusiev.com/2009/04/update-and-create-timestamps-with-mysql/ create table test_table( id integer not null auto_increment primary key, stamp_created timestamp default '0000-00-00 00:00:00', stamp_updated timestamp default now() on update now() ); Note that it is necessary to enter nulls in...
https://stackoverflow.com/ques... 

Check whether a variable is a string in Ruby

... In addition to the other answers, Class defines the method === to test whether an object is an instance of that class. o.class class of o. o.instance_of? c determines whether o.class == c o.is_a? c Is o an instance of c or any of it's subclasses? o.kind_of? c synonym for *is_a?* c === o f...
https://stackoverflow.com/ques... 

Is 'switch' faster than 'if'?

...-- note that the compiler in practice would need to insert some form of if test around the table to ensure that the input was valid in the table. Note also that it only works in the specific case that the input is a run of consecutive numbers. If the number of branches in a switch is extremely larg...
https://stackoverflow.com/ques... 

How to pass parameters to ThreadStart method in Thread?

... How about this: (or is it ok to use like this?) var test = "Hello"; new Thread(new ThreadStart(() => { try { //Staff to do Console.WriteLine(test); } catch (Exception ex) { throw; } })).Start(); ...
https://stackoverflow.com/ques... 

Test if lists share any items in python

... Short answer: use not set(a).isdisjoint(b), it's generally the fastest. There are four common ways to test if two lists a and b share any items. The first option is to convert both to sets and check their intersection, as such: bool(set(a) & set(b)) Because sets are stored using a h...
https://stackoverflow.com/ques... 

Create an index on a huge MySQL production table without table locking

...ted. MySQL is really, really stupid about this (and a few other things). Test Script: ( for n in {1..50}; do #(time mysql -uroot -e 'select * from website_development.users where id = 41225\G'>/dev/null) 2>&1 | grep real; (time mysql -uroot -e 'update website_development.u...