大约有 42,000 项符合查询结果（耗时：0.0638秒） [XML]
Error handling with node.js streams
What's the correct way to handle errors with streams? I already know there's an 'error' event you can listen on, but I want to know some more details about arbitrarily complicated situations.
...
Modulo operation with negative numbers
...
Should the compiler be smart enough and detect that an unsigned modulo another unsigned is always positive? Currently (well, GCC 5.2) the compiler seems to think that "%" returns an "int" in this case, rather than "unsigned" even when both operands are uint32_...
Are JavaScript strings immutable? Do I need a “string builder” in JavaScript?
...on) so I wanted to test out the different methods of concatenating strings and abstracting the fastest way into a StringBuilder. I wrote some tests to see if this is true (it isn't!).
This was what I believed would be the fastest way, though I kept thinking that adding a method call may make it slo...
Tips for using Vim as a Java IDE? [closed]
...
Some tips:
Make sure you use vim (vi improved). Linux and some versions of UNIX symlink vi to vim.
You can get code completion with eclim
Or you can get vi functionality within Eclipse with viPlugin
Syntax highlighting is great with vim
Vim has good support for writing little ma...
Unit Test? Integration Test? Regression Test? Acceptance Test?
...er has not introduced any errors.
Regression testing - after integrating (and maybe fixing) you should run your unit tests again. This is regression testing to ensure that further changes have not broken any units that were already tested. The unit testing you already did has produced the unit te...
how to show lines in common (reverse diff)?
...ines in common rather than the lines which are different between them. Command line unix or windows is fine.
7 Answers
...
Link to reload current page
...ve been using:
<a href=".">link</a>
Have yet to find a case and/or browser where it does not work as intended.
Period means the current path. You can also use .. to refer to the folder above the current path, for instance, if you have this file structure:
page1.html
folder1
page...
How to write :hover condition for a:before and a:after?
How to write :hover and :visited condition for a:before ?
7 Answers
7
...
How do I configure PyCharm to run py.test tests?
I want to start writing unit tests for my Python code, and the py.test framework sounds like a better bet than Python's bundled unittest . So I added a "tests" directory to my project, and added test_sample.py to it. Now I want to configure PyCharm to run all the tests in my "tests" directory.
...
What is the 'pythonic' equivalent to the 'fold' function from functional programming?
...u can sometimes use some combination of reduce (from the functools module) and the operator module, e.g.:
def product(xs):
return reduce(operator.mul, xs, 1)
Be aware that reduce is actually a foldl, in Haskell terms. There is no special syntax to perform folds, there's no builtin foldr, and ...