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Counting the occurrences / frequency of array elements

...be faster than creating an associative array. – quant_dev Sep 29 '17 at 20:24  |  show 1 more comment ...
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How to declare a variable in a PostgreSQL query

...WITH () query which can work as a variable, or even tuple of variables. It allows you to return a table of temporary values. WITH master_user AS ( SELECT login, registration_date FROM users WHERE ... ) SELECT * FROM users WHERE master_login = (SELECT login ...
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Validate that end date is greater than start date with jQuery

... I had to modify it slightly to allow for blank end dates in my app, but this did the bulk. code if (value == 0) { return true; } else if (!/Invalid|NaN/... code – Frank Luke Jun 23 '11 at 14:48 ...
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Java Serializable Object to Byte Array

...Object); out.flush(); byte[] yourBytes = bos.toByteArray(); ... } finally { try { bos.close(); } catch (IOException ex) { // ignore close exception } } Create an object from a byte array: ByteArrayInputStream bis = new ByteArrayInputStream(yourBytes); ObjectInput in = null; tr...
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How to test that no exception is thrown?

... test your functionality: if an exception is thrown the test will automatically fail. If no exception is thrown, your tests will all turn up green. I have noticed this question garners interest from time to time so I'll expand a little. Background to unit testing When you're unit testing it's imp...
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What are all the user accounts for IIS/ASP.NET and how do they differ?

Under Windows Server 2008 with ASP.NET 4.0 installed there is a whole slew of related user accounts, and I can't understand which one is which, how to they differ, and which one is REALLY the one that my app runs under. Here's a list: ...
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Remove all special characters from a string in R?

How to remove all special characters from string in R and replace them with spaces ? 3 Answers ...
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JavaScript naming conventions [closed]

... I see Crockford's guildelines mentions "Do not use _ underbar as the first or last character of a name. It is sometimes intended to indicate privacy". I personally use underbar to indicate private members. Is this bad practice? Is there an alternative? –...
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Static link of shared library function in gcc

How can I link a shared library function statically in gcc? 6 Answers 6 ...
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Reactjs convert html string to jsx

...se the dangerouslySetInnerHTML property: <td dangerouslySetInnerHTML={{__html: this.state.actions}} /> React forces this intentionally-cumbersome syntax so that you don't accidentally render text as HTML and introduce XSS bugs. ...