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Bash/sh - difference between && and ;
...eans to execute next command if the previous exited with status 0.
For the opposite, use || i.e. to be executed if previous command exits with a status not equal to 0 ; executes always.
Very useful when you need to take a particular action depending on if the previous command finished OK or not.
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What is the “right” way to iterate through an array in Ruby?
PHP, for all its warts, is pretty good on this count. There's no difference between an array and a hash (maybe I'm naive, but this seems obviously right to me), and to iterate through either you just do
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Can I replace groups in Java regex?
...kind-of weird that no-one pointed this out - "Yes you can, but this is the opposite of how you use capturing groups in real life".
If you use Regex the way it is meant to be used, the solution is as simple as this:
"6 example input 4".replaceAll("(?:\\d)(.*)(?:\\d)", "number$11");
Or as rightful...
Cannot find module cv2 when using OpenCV
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This happens when python cannot refer to your default site-packages folder where you have kept the required python files or libraries
Add these lines in the code:
import sys
sys.path.append('/usr/local/lib/python2.7/site-packages')
or before running the python command in ...
Ruby on Rails vs ASP.NET MVC 3 for a .NET Guy? [closed]
...re is any point to consider using RoR over .MVC to develop a real world website?
4 Answers
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find: missing argument to -exec
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For me it works just the opposite in Cygwin under Windows 7: no space before\ ; works, with space - doesn't. But if i remove \, with space before ; it works, and without space before ; it doesn't, just the way it described here.
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const char * const versus const char *?
...entirely. const char * is much better because the const is on the complete opposite side.
– R.. GitHub STOP HELPING ICE
Feb 9 '11 at 19:55
7
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How to convert enum value to int?
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@likejiujitsu: That's going in the opposite direction. In this question, the OP already has a value of type Tax, and wants to get the numeric value from it.
– Jon Skeet
Sep 10 '14 at 22:34
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How can I import Swift code to Objective-C?
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@lelelo No, that file is the opposite of this one. The bridging header is written by the developer and lets you bring Objective-C and C symbols into your Swift code. The Target-Swift.h file is automatically generated and lets your Objective-C/C code acce...
How to substring in jquery
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Why have you linked to PHP's strpos function in a question on JavaScript?
– casablanca
Nov 8 '10 at 18:53
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