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Does Qt support virtual pure slots?
... Qt has a lot of "configuration pages" classes which all inherit directly from QWidget .
2 Answers
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How to Find And Replace Text In A File With C#
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You're going to have a hard time writing to the same file you're reading from. One quick way is to simply do this:
File.WriteAllText("test.txt", File.ReadAllText("test.txt").Replace("some text","some other text"));
You can lay that out better with
string str = File.ReadAllText("test.txt");
str...
Passing arrays as parameters in bash
... --iread --msix --iwrite --msi --iread --msi --iwrite
Edit/notes: (from comments below)
descTable and optsTable are passed as names and are expanded in the function. Thus no $ is needed when given as parameters.
Note that this still works even with descTable etc being defined with local, b...
Array versus linked-list
... may not even be
possible if memory is fragmented.
Similarly, an array from which many
elements are removed may become
wastefully empty or need to be made
smaller.
On the other hand, arrays allow random
access, while linked lists allow only
sequential access to elements.
Singly-...
How to generate XML file dynamically using PHP?
...creen or spreadsheet.
Another advantage is you don't have to code the xml from scratch, in some cases I've been wanting to export very large complex spreadsheets, and instead of having to code all the export all that is required is to save an existing spreadsheet in xml and substitute in code tags ...
How do I push to GitHub under a different username?
... @WesternGun Do not provide password in the url if you want to prevent it from being recorded in bash history. Use https://'B_user_name'@github.com/B_user_name/project.git. This should prompt for the password of B_user_name.
– subtleseeker
Jul 8 at 10:39
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When to use -retainCount?
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To add to this, any information you could gain from -retainCount can be gotten (with much more detail) from Instruments and its tools.
– Dave DeLong
Jan 8 '11 at 21:45
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What text editor is available in Heroku bash shell? [closed]
... /app/nano
export PATH=$PATH:/app/nano
This will download a copy of nano from this plugin and put it in your PATH.
share
edited Feb 26 '19 at 6:06
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How to get the primary IP address of the local machine on Linux and OS X? [closed]
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Use grep to filter IP address from ifconfig:
ifconfig | grep -Eo 'inet (addr:)?([0-9]*\.){3}[0-9]*' | grep -Eo '([0-9]*\.){3}[0-9]*' | grep -v '127.0.0.1'
Or with sed:
ifconfig | sed -En 's/127.0.0.1//;s/.*inet (addr:)?(([0-9]*\.){3}[0-9]*).*/\2/p'
I...
What is the worst real-world macros/pre-processor abuse you've ever come across?
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From memory, it looked something like this:
#define RETURN(result) return (result);}
int myfunction1(args) {
int x = 0;
// do something
RETURN(x)
int myfunction2(args) {
int y = 0;
// do something
R...