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Check if a string is a date value
What is an easy way to check if a value is a valid date, any known date format allowed.
20 Answers
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structure vs class in swift language
From Apple book
"One of the most important differences between structures and classes is that structures are always copied when they are passed around in your code, but classes are passed by reference."
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Rails: How does the respond_to block work?
I'm going through the Getting Started with Rails guide and got confused with section 6.7. After generating a scaffold I find the following auto-generated block in my controller:
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What are rvalues, lvalues, xvalues, glvalues, and prvalues?
In C++03, an expression is either an rvalue or an lvalue .
11 Answers
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What is the benefit of zerofill in MySQL?
I just want to know what is the benefit/usage of defining ZEROFILL for INT DataType in MySQL ?
9 Answers
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Storing money in a decimal column - what precision and scale?
I'm using a decimal column to store money values on a database, and today I was wondering what precision and scale to use.
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Why does C++11's lambda require “mutable” keyword for capture-by-value, by default?
Short example:
10 Answers
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Convert char to int in C and C++
How do I convert a char to an int in C and C++?
12 Answers
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Determine if variable is defined in Python [duplicate]
How do you know whether a variable has been set at a particular place in the code at runtime? This is not always obvious because (1) the variable could be conditionally set, and (2) the variable could be conditionally deleted. I'm looking for something like defined() in Perl or isset() in PHP or...
Java ByteBuffer to String
Is this a correct approach to convert ByteBuffer to String in this way,
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