大约有 40,000 项符合查询结果（耗时：0.0579秒） [XML]
puts vs logger in rails rake tasks
...he output on console. However I will not see that message in log file when app is deployed on production.
8 Answers
...
How do I create an average from a Ruby array?
...
Try this:
arr = [5, 6, 7, 8]
arr.inject{ |sum, el| sum + el }.to_f / arr.size
=> 6.5
Note the .to_f, which you'll want for avoiding any problems from integer division. You can also do:
arr = [5, 6, 7, 8]
arr.inject(0.0) { |sum, el| sum + el } / arr.size
=> 6.5
You can define it...
git: undo all working dir changes including new files
...of adding a new untracked file. From the question, the asker may be quite happy with his current set of ignored files.
– CB Bailey
Jul 7 '09 at 6:49
7
...
Why doesn't Python have a sign function?
...y removed and replaced by sign! Have you never implemented a class with a __cmp__ method? Have you never called cmp and specified a custom comparator function?
In summary, I've found myself wanting a sign function too, but copysign with the first argument being 1 will work just fine. I disagree ...
PHP CURL DELETE request
...roblem, here is my solution:
I created a new method:
public function curl_del($path)
{
$url = $this->__url.$path;
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "DELETE");
$result = curl_exec($ch);
$httpCode = curl_getinfo...
split string only on first instance of specified character
In my code I split a string based on _ and grab the second item in the array.
17 Answers
...
How do you deal with configuration files in source control?
Let's say you have a typical web app and with a file configuration.whatever. Every developer working on the project will have one version for their dev boxes, there will be a dev, prod and stage versions. How do you deal with this in source control? Not check in this file at all, check it with diffe...
What are the sizes used for the iOS application splash screen?
I am developing an application using the iOS SDK. I need to know what Default splash screen sizes I need.
10 Answers
...
Python decorators in classes
...
Would something like this do what you need?
class Test(object):
def _decorator(foo):
def magic( self ) :
print "start magic"
foo( self )
print "end magic"
return magic
@_decorator
def bar( self ) :
print "normal call"
test ...
Code Golf: Collatz Conjecture
...t;^v are arrows that change direction the "program counter" wanders. | and _ are conditionals that go up/down or left/right depending on whether the value on stack is true or false. The whole "code arena" wraps around through top-bottom and left-right.
– SF.
Ma...