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What is this weird colon-member (“ : ”) syntax in the constructor?
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It's a member initialization list. You should find information about it in any good C++ book.
You should, in most cases, initialize all member objects in the member initialization list (however, do note the exceptions listed at the end of the FAQ entry).
The takeaway point f...
Transactions in REST?
...ple items to a shopping basket and then submit that basket to process the order, you can add Bob's account entry to the transaction wrapper and then Bill's account entry to the wrapper. When all the pieces are in place then you can POST/PUT the transaction wrapper with all the component pieces. ...
xcopy file, rename, suppress “Does xxx specify a file name…” message
... proper flag , but how would I, in one command, copy a file from one directory to another and rename it in the destination directory? Here's my command:
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Exit Shell Script Based on Process Exit Code
...o, in the code:
ls -al file.ext | sed 's/^/xx: /"
will not return an error code if the file doesn't exist (since the sed part of the pipeline actually works, returning 0).
The bash shell actually provides an array which can assist in that case, that being PIPESTATUS. This array has one element f...
Is there a command like “watch” or “inotifywait” on the Mac?
...swatch
fswatch is a small program using the Mac OS X FSEvents API to monitor a directory.
When an event about any change to that directory is received, the specified
shell command is executed by /bin/bash
If you're on GNU/Linux,
inotifywatch (part of the
inotify-tools package on most distributions...
Determining the current foreground application from a background task or service
...ground application can know what the application currently running in the foreground is."
Do NOT use the getRunningAppProcesses() method as this returns all sorts of system rubbish from my experience and you'll get multiple results which have RunningAppProcessInfo.IMPORTANCE_FOREGROUND. Use getRu...
How do I get cURL to not show the progress bar?
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curl -s http://google.com > temp.html
works for curl version 7.19.5 on Ubuntu 9.10 (no progress bar). But if for some reason that does not work on your platform, you could always redirect stderr to /dev/null:
curl http://google.com 2>/dev/null > temp.html
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UIButton remove all target-actions
I have added multiple target-action-forControlEvents: to a UIButton. I'd like to remove all of these in one go without deallocating anything. I will then set new targets.
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How to remove an HTML element using Javascript?
...total newbie. Can somebody tell me how to remove an HTML element using the original Javascript not jQuery.
11 Answers
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How to determine the memory footprint (size) of a variable?
Is there a function in PHP (or a PHP extension) to find out how much memory a given variable uses? sizeof just tells me the number of elements/properties.
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