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What does character set and collation mean exactly?
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From MySQL docs:
A character set is a set of symbols
and encodings. A collation is a set of
rules for comparing characters in a
character set. Let's make the
distinction clear with an example of
an imaginary character set.
Suppose that we have...
What is the difference between D3 and jQuery?
Referring to this example:
7 Answers
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Printf width specifier to maintain precision of floating-point value
Is there a printf width specifier which can be applied to a floating point specifier that would automatically format the output to the necessary number of significant digits such that when scanning the string back in, the original floating point value is acquired?
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Is there a difference between authentication and authorization?
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There is indeed a fundamental difference. Authentication is the mechanism whereby systems may securely identify their users. Authentication systems seek to provide answers to the questions:
Who is the user?
Is the user really who...
Representing null in JSON
What is the preferred method for returning null values in JSON? Is there a different preference for primitives?
7 Answers
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What is an Intent in Android?
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An Intent is an "intention" to perform an action; in other words,
a messaging object you can use to request an action from another app component
An Intent is basically a message to say you did or want something to happen. Dependi...
What is the purpose of willSet and didSet in Swift?
... to notify other objects that the property just changed. When all you have is get/set, you need another field to hold the value. With willSet and didSet, you can take action when the value is modified without needing another field. For instance, in that example:
class Foo {
var myProperty: Int ...
General guidelines to avoid memory leaks in C++ [closed]
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edited Nov 28 '12 at 16:23
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What is the difference between 'git pull' and 'git fetch'?
...update your remote-tracking branches under refs/remotes/<remote>/.
This operation never changes any of your own local branches under refs/heads, and is safe to do without changing your working copy. I have even heard of people running git fetch periodically in a cron job in the background (alt...
Ternary operator is twice as slow as an if-else block?
I read everywhere that ternary operator is supposed to be faster than, or at least the same as, its equivalent if - else block.
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