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Pass a JavaScript function as parameter
How do I pass a function as a parameter without the function executing in the "parent" function or using eval() ? (Since I've read that it's insecure.)
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Is it safe to push_back an element from the same vector?
...tandard:
1) Parameters taken by const reference can be changed during execution
of the function
Examples:
Given std::vector v:
v.insert(v.begin(), v[2]);
v[2] can be changed by moving elements of vector
The proposed resolution was that this was not a defect:
vector::i...
How to avoid “RuntimeError: dictionary changed size during iteration” error?
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In Python 2.x calling keys makes a copy of the key that you can iterate over while modifying the dict:
for i in d.keys():
Note that this doesn't work in Python 3.x because keys returns an iterator instead of a list.
Another way is to...
How to find the length of a string in R
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See ?nchar. For example:
> nchar("foo")
[1] 3
> set.seed(10)
> strn <- paste(sample(LETTERS, 10), collapse = "")
> strn
[1] "NHKPBEFTLY"
> nchar(strn)
[1] 10
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How do I do a case-insensitive string comparison?
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That doesn’t always work. Consider for exanmple that there are two Greek sigmas, one only used at the end. The string Σίσυφος (“Sísyphos”, or better “Síſyphos”) has all three: uppercase at the front, lowercase final at the end, and lowercase nonf...
How can I add a custom HTTP header to ajax request with js or jQuery?
...st then just add the headers property:
// Request with custom header
$.ajax({
url: 'foo/bar',
headers: { 'x-my-custom-header': 'some value' }
});
If you want to add a default header (or set of headers) to every request then use $.ajaxSetup():
$.ajaxSetup({
headers: { 'x-my-custom-hea...
How to get the index of an item in a list in a single step?
How can I find the index of an item in a list without looping through it?
7 Answers
7
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How is a non-breaking space represented in a JavaScript string?
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&nbsp; is a HTML entity. When doing .text(), all HTML entities are decoded to their character values.
Instead of comparing using the entity, compare using the actual raw character:
var x = td.text();
if (x == '\xa0') { // Non-breakable space is char 0xa0 (160 de...
How to call one shell script from another shell script?
...e are a couple of different ways you can do this:
Make the other script executable, add the #!/bin/bash line at the top, and the path where the file is to the $PATH environment variable. Then you can call it as a normal command;
Or call it with the source command (alias is .) like this: source /pa...
Advantages of stateless programming?
...ctional mindset, but there are some situations that just seem overly complex without the ability to save state in an easy way (I don't consider Haskell's monads 'easy').
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