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Purpose of Unions in C and C++
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The purpose of unions is rather obvious, but for some reason people miss it quite often.
The purpose of union is to save memory by using the same memory region for storing different objects at different times. That's it.
It is like a room in a hotel. Different people live in it for non-overla...
Build Eclipse Java Project from Command Line
...urce\MyProject\workspace" -application org.eclipse.jdt.apt.core.aptBuild
It uses the jdt apt plugin to build your workspace automatically. This is also known as a 'Headless Build'. Damn hard to figure out. If you're not using a win32 exe, you can try this:
java -cp startup.jar -noSplash -data "...
GB English, or US English?
If you have an API, and you are a UK-based developer with a highly international audience, should your API be
28 Answers
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How do I properly clean up Excel interop objects?
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Excel does not quit because your application is still holding references to COM objects.
I guess you're invoking at least one member of a COM object without assigning it to a variable.
For me it was the excelApp.Worksheets object which I di...
How to fix getImageData() error The canvas has been tainted by cross-origin data?
My code is working very well on my localhost but it is not working on the site.
11 Answers
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Why is $$ returning the same id as the parent process?
I have problem with Bash, and I don't know why.
Under shell, I enter:
6 Answers
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Good ways to manage a changelog using git?
I've been using Git for a while now, and I recently started using it to tag my releases so that I could more easily keep track of changes and be able to see which version each of our clients are running (unfortunately the code currently mandates that each client have their own copy of the PHP site; ...
How to delete an old/unused Data Model Version in Xcode
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It's a hack, but this worked for me:
Set the Current version of the model in Xcode to one that you want to keep
Remove the .xcdatamodeld from your project (Right-click -> Delete -> Remove Reference Only)
Show the con...
keytool error Keystore was tampered with, or password was incorrect
...genkey -alias tomcat -keyalg RSA
because you are not specifying an explicit keystore it will try to generate (and in your case as you are getting exception so to update) keystore C:\users\abc>.keystore and of course you need to provide old password for .keystore while I believe you are providin...
PHP: How to check if image file exists?
...me)) {
… }
Also, make sure $filename is properly validated. And then, it will only work when allow_url_fopen is activated in your PHP config
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