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Count the number of occurrences of a character in a string in Javascript
...f using a match better, but it is slower:
console.log(("str1,str2,str3,str4".match(/,/g) || []).length); //logs 3
console.log(("str1,str2,str3,str4".match(new RegExp("str", "g")) || []).length); //logs 4
jsfiddle
Use a regular expression literal if you know what you are searching for beforehand...
Android, ListView IllegalStateException: “The content of the adapter has changed but ListView did no
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MullinsMullins
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Best Practice: Initialize JUnit class fields in setUp() or at declaration?
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45
I started digging myself and I found one potential advantage of using setUp(). If any exceptio...
How can the Euclidean distance be calculated with NumPy?
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Nicolas Gervais
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answered Sep 9 '09 at 20:12
u0b34a0f6aeu0b34a0f6ae
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Error message 'Unable to load one or more of the requested types. Retrieve the LoaderExceptions prop
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edited Sep 29 '15 at 16:46
musefan
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answe...
“INSERT IGNORE” vs “INSERT … ON DUPLICATE KEY UPDATE”
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answered Feb 14 '09 at 5:51
Bill KarwinBill Karwin
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iPhone UIView Animation Best Practice
...ations:context: method:
Use of this method is discouraged in iPhone OS 4.0 and later. You should use the block-based animation methods instead.
Eg of Block-based Animation based on Tom's Comment
[UIView transitionWithView:mysuperview
duration:0.75
options...
PDO Prepared Inserts multiple rows in single query
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edited Nov 26 '17 at 19:46
Uwe Keim
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answ...
string.IsNullOrEmpty(string) vs. string.IsNullOrWhiteSpace(string)
... as bad practice when there is string.IsNullOrWhiteSpace(string) in .NET 4.0 and above?
9 Answers
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Python regular expressions return true/false
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141
Match objects are always true, and None is returned if there is no match. Just test for truenes...