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Count the number occurrences of a character in a string

...ng, I would use a regular expression or the str.count() method. I haven't tested, but there may be a performance difference due to a slight overhead in counting all characters and appending to a dictionary rather than counting occurrences of a single substring. I would suggest writing a script to ...
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How can I read a text file in Android?

...nvironment.getExternalStorageDirectory(); File file = new File(sdcard,"testFile.txt"); BufferedReader br = new BufferedReader(new FileReader(file)); String line; while ((line = br.readLine()) != null) { text.append(line); Log....
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Removing leading zeroes from a field in a SQL statement

...s case. If this is a problem, the return value of patindex will have to be tested against zero. – Ian Horwill Apr 20 '09 at 9:26 ...
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knitr Markdown highlighting in Emacs?

...ou say you have GNU Emacs 23.3.1, but in polymode readme.md, it reads: Tested with Emacs 24.3.1 and 24.4.5. As for your error: "Cannot open load file: color", in polymode.el, there is the line: (require 'color) this package is in Emacs 24, but it might well miss in your version. Solution...
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How to disable the warning 'define' is not defined using JSHint and RequireJS

...iins Bohdan's comment above. Add that line as the first line of your mocha test file and it will enforce the rule for that file only – Isaac Apr 18 '19 at 0:46 add a comment ...
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Explain ExtJS 4 event handling

...e equivalent) were created. So, for example, if we have html: <div id="test_node"></div> and we want add click event handler. Let's retrieve Element: var el = Ext.get('test_node'); Now let's check docs for click event. It's handler may have three parameters: click( Ext.EventObj...
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How can I create an error 404 in PHP?

...nd" page that you might be expecting, e.g.: Not Found The requested URL /test.php was not found on this server. That's because the web server doesn't send that page when PHP returns a 404 code (at least Apache doesn't). PHP is responsible for sending all its own output. So if you want a similar p...
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Is this a “good enough” random algorithm; why isn't it used if it's faster?

...ckage com.stackoverflow.q14491966; import java.util.Arrays; public class Test { public static void main(String[] args) throws Exception { QuickRandom qr = new QuickRandom(); int[] frequencies = new int[10]; for (int i = 0; i < 100000; i++) { frequencies[...
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slf4j: how to log formatted message, object array, exception

...on it will be interpreted as such regardless of the underlying framework. (Tested with logback, slf4j-log4j12, slf4j-jdk14 and slf4j-simple. ) – Ceki Jun 20 '11 at 10:37 ...
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How to check if a DateTime occurs today?

... } } And now, everywhere on your code, where do you want to perform this test, you should include the using: using ExtensionMethods; And then, use the extension method: newsStory.WhenAdded.IsSameDay(DateTime.Now); sha...