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How to un-escape a backslash-escaped string?
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139
>>> print '"Hello,\\nworld!"'.decode('string_escape')
"Hello,
world!"
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How to concatenate and minify multiple CSS and JavaScript files with Grunt.js (0.3.x)
Note: This question is only relevant for Grunt 0.3.x and has been left for reference. For help with the latest Grunt 1.x release please see my comment below this question.
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One-line list comprehension: if-else variants
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342
x if y else z is the syntax for the expression you're returning for each element. Thus you nee...
Is module __file__ attribute absolute or relative?
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Ioannis Filippidis
7,36866 gold badges6060 silver badges9393 bronze badges
answered Aug 19 '11 at 4:23
agfagf
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How to concatenate properties from multiple JavaScript objects
...ation on Object.assign()
var o1 = { a: 1 };
var o2 = { b: 2 };
var o3 = { c: 3 };
var obj = Object.assign({}, o1, o2, o3);
console.log(obj); // { a: 1, b: 2, c: 3 }
Object.assign is supported in many modern browsers but not yet all of them. Use a transpiler like Babel and Traceur t...
jQuery - multiple $(document).ready …?
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356
All will get executed and On first Called first run basis!!
<div id="target"></div&g...
warning: implicit declaration of function
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236
You are using a function for which the compiler has not seen a declaration ("prototype") yet.
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How to exclude particular class name in CSS selector?
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3 Answers
3
Active
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How do I replace NA values with zeros in an R dataframe?
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See my comment in @gsk3 answer. A simple example:
> m <- matrix(sample(c(NA, 1:10), 100, replace = TRUE), 10)
> d <- as.data.frame(m)
V1 V2 V3 V4 V5 V6 V7 V8 V9 V10
1 4 3 NA 3 7 6 6 10 6 5
2 9 8 9 5 10 NA 2 1 7 ...