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Why are preprocessor macros evil and what are the alternatives?
I have always asked this but I have never received a really good answer; I think that almost any programmer before even writing the first "Hello World" had encountered a phrase like "macro should never be used", "macro are evil" and so on, my question is: why? With the new C++11 is there a real alte...
How do I free my port 80 on localhost Windows?
...y has been solved for me. I found out that what was taking over port 80 is http api service. I wrote in cmd:
net stop http
Asked me "The following services will be stopped, do you want to continue?" Pressed y
It stopped a number of services actually.
Then wrote localhost and wallah, Apache is...
Growing Amazon EBS Volume sizes [closed]
...ou're not comfortable using CLI, this will make your upgrade much easier.
http://www.tekgoblin.com/2012/08/27/aws-guides-how-to-resize-a-ec2-windows-ebs-volume/
Thanks to TekGoblin for posting this article.
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How to drop a table if it exists?
The table name is Scores .
14 Answers
14
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How do I use valgrind to find memory leaks?
How do I use valgrind to find the memory leaks in a program?
4 Answers
4
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Best way to store date/time in mongodb
...t last one-liner confuses you I have a walkthrough on how that works here: https://stackoverflow.com/a/27613766/445131
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Install gitk on Mac
... separate formula by using brew. More thorough instructions located here: http://www.moncefbelyamani.com/how-to-install-xcode-homebrew-git-rvm-ruby-on-mac/ (see this commit extracting git-gui/gitk into its own formula: https://github.com/Homebrew/homebrew-core/commit/dfa3ccf1e7d3901e371b5140b935...
How do I get the collection of Model State Errors in ASP.NET MVC?
How do I get the collection of errors in a view?
8 Answers
8
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jQuery: Check if div with certain class name exists
... length is zero, it evaluates to false
if ($('div.mydivclass').length) {
http://api.jquery.com/size/
http://api.jquery.com/length/
UPDATE
The selected answer uses a perf test, but it's slightly flawed since it is also including element selection as part of the perf, which is not what's being te...
Difference between binary semaphore and mutex
... routine
(ISR) will signal the call processing task to wakeup.
Source: http://www.geeksforgeeks.org/mutex-vs-semaphore/