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The performance impact of using instanceof in Java
I am working on an application and one design approach involves extremely heavy use of the instanceof operator. While I know that OO design generally tries to avoid using instanceof , that is a different story and this question is purely related to performance. I was wondering if there is any per...
How to skip “are you sure Y/N” when deleting files in batch files
I can't for the life of me remember how to bypass the annoying prompt are you sure? Y/N when deleting files.
4 Answers
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Git: Correct way to change Active Branch in a bare repository?
...master branch (unless they do git clone -n ) because repo.git/HEAD contains ref: refs/heads/master , making this the Active Branch .
...
How to validate an Email in PHP?
How can I validate the input value is a valid email address using php5. Now I am using this code
7 Answers
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Merge cells using EPPlus?
I'm using the EPPlus library to read/write Excel files: http://epplus.codeplex.com/
3 Answers
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RegEx backreferences in IntelliJ
I want to use IntelliJ's find-and-replace feature to perform the following transformation:
4 Answers
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Stretch background image css?
...e: cover;
-o-background-size: cover;
background-size: cover;
}
Works in:
Safari 3+
Chrome Whatever+
IE 9+
Opera 10+ (Opera 9.5 supported background-size but not the keywords)
Firefox 3.6+ (Firefox 4 supports non-vendor prefixed version)
In addition you can try this for an IE solution
f...
Convert InputStream to BufferedReader
I'm trying to read a text file line by line using InputStream from the assets directory in Android.
3 Answers
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What does the “@” symbol mean in reference to lists in Haskell?
...bol is used to both give a name to a parameter and match that parameter against a pattern that follows the @. It's not specific to lists and can also be used with other data structures.
This is useful if you want to "decompose" a parameter into it's parts while still needing the parameter as a whol...
Is there any difference between a GUID and a UUID?
I see these 2 acronyms thrown around, and I was wondering if there are any differences between a GUID and a UUID?
6 Answers...