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How can I create a two dimensional array in JavaScript?

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leading zeros in rails

...min , both integers in my application. For hr field, if the user enters "1" I would like Rails to automatically pad it to "01" before saving it to the database. Also for the min field if the user enter "0" it should put in as "00". ...
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Get a random boolean in python?

... Adam's answer is quite fast, but I found that random.getrandbits(1) to be quite a lot faster. If you really want a boolean instead of a long then bool(random.getrandbits(1)) is still about twice as fast as random.choice([True, False]) Both solutions need to import random If utmost spe...
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Why does ('0' ? 'a' : 'b') behave different than ('0' == true ? 'a' : 'b') [duplicate]

...ons will take place here. We can follow this in the specification, section 11.9.3, The Abstract Equality Comparison Algorithm. The operands are denoted as x and y (x == y). In our case, x is a string ('0') and y is a Boolean (true). Hence step 7 is executed: If Type(y) is Boolean, return the ...
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Make xargs execute the command once for each line of input

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Boolean Field in Oracle

...nd other programming environments, it's better to select 0 for false and 1 for true so it can work correctly with the getBoolean and setBoolean functions. Basically they advocate method number 2, for efficiency's sake, using values of 0/1 (because of interoperability with JDBC's getBoolean(...
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In C++, is it still bad practice to return a vector from a function?

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Convert NaN to 0 in javascript

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Correct way to convert size in bytes to KB, MB, GB in JavaScript

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print call stack in C or C++

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