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How to check if std::map contains a key without doing insert?
The only way I have found to check for duplicates is by inserting and checking the std::pair.second for false , but the problem is that this still inserts something if the key is unused, whereas what I want is a map.contains(key); function.
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Using scanf() in C++ programs is faster than using cin?
I don't know if this is true, but when I was reading FAQ on one of the problem providing sites, I found something, that poke my attention:
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jQuery or javascript to find memory usage of page
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2015 Update
Back in 2012 this wasn't possible, if you wanted to support all major browsers in-use. Unfortunately, right now this is still a Chrome only feature (a non-standard extension of window.performance).
window.performance.memory
B...
What is the fastest way to get the value of π?
I'm looking for the fastest way to obtain the value of π, as a personal challenge. More specifically, I'm using ways that don't involve using #define constants like M_PI , or hard-coding the number in.
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How to merge specific files from Git branches
... file.py from branch2 that is no longer applies to branch1, it requires picking some changes and leaving others. For full control do an interactive merge using the --patch switch:
$ git checkout --patch branch2 file.py
The interactive mode section in the man page for git-add(1) explains the keys ...
How can I indent multiple lines in Xcode?
... select multiple lines of code and want to indent them as usual with TAB key, it just deletes them all. I come from Eclipse where I always did it that way. How's that done in Xcode? I hope not line by line ;)
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Getting only Month and Year from SQL DATE
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Wayne Werner
38.7k2020 gold badges157157 silver badges239239 bronze badges
answered Nov 23 '09 at 14:24
MatBailieMatBa...
Quick-and-dirty way to ensure only one instance of a shell script is running at a time
What's a quick-and-dirty way to make sure that only one instance of a shell script is running at a given time?
40 Answers
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Capturing standard out and error with Start-Process
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Andy ArismendiAndy Arismendi
42.8k1515 gold badges9191 silver badges113113 bronze badges
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How to view the Folder and Files in GAC?
I want to view the folders and sub folders in GAC . Also want to know about adding and removing from GAC .
5 Answers
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