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When should I use UNSIGNED and SIGNED INT in MySQL?
...//dev.mysql.com/doc/refman/5.6/en/integer-types.html
UNSIGNED ranges from 0 to n, while signed ranges from about -n/2 to n/2.
In this case, you have an AUTO_INCREMENT ID column, so you would not have negatives. Thus, use UNSIGNED. If you do not use UNSIGNED for the AUTO_INCREMENT column, your maxi...
How to use sidebar with the keyboard in Sublime Text 2 and 3?
...
You can type Ctrl+0 (Ctrl+Zero) to focus on the side bar.
Then you'll be able to move selection among files with arrow keys and to open the selected file hitting Enter, without touching the mouse.
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Equation (expression) parser with precedence?
...expr = expr `chainl1` toOp
expr = optChainl1 term addop (toScalar 0)
term = factor `chainl1` mulop
factor = sexpr `chainr1` powop
sexpr = parens aexpr
<|> scalar
<|> ident
powop = sym "^" >>= return . (B Pow)
<|> sym "^-" >...
How to make inline functions in C#
...ere are several syntaxes available.
Anonymous methods were added in C# 2.0:
Func<int, int, int> add = delegate(int x, int y)
{
return x + y;
};
Action<int> print = delegate(int x)
{
Console.WriteLine(x);
}
Action<int> helloWorld = delegate // parameters can be elided if ...
Draw line in UIView
... to do it. For example, I want to draw a black horizontal line at y-coord=200.
8 Answers
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What is the worst gotcha in C# or .NET? [closed]
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304
private int myVar;
public int MyVar
{
get { return MyVar; }
}
Blammo. Your app crashes w...
In Firebase, is there a way to get the number of children of a node without loading all the node dat
...votesRef.transaction(function (current_value) {
return (current_value || 0) + 1;
});
For more info, see https://www.firebase.com/docs/transactions.html
UPDATE:
Firebase recently released Cloud Functions. With Cloud Functions, you don't need to create your own Server. You can simply write JavaSc...
How to find and return a duplicate value in array
...
20 Answers
20
Active
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Where in a virtualenv does the custom code go?
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90
virtualenv provides a python interpreter instance, not an application instance. You wouldn't no...
Generating Random Passwords
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answered Sep 10 '08 at 22:44
RikRik
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