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Using multiple delimiters in awk
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Perl is closely related to awk, however, the @F autosplit array starts at index $F[0] while awk fields start with $1.
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map function for objects (instead of arrays)
...t = { 'a': 1, 'b': 2, 'c': 3 };
Object.keys(myObject).map(function(key, index) {
myObject[key] *= 2;
});
console.log(myObject);
// => { 'a': 2, 'b': 4, 'c': 6 }
But you could easily iterate over an object using for ... in:
var myObject = { 'a': 1, 'b': 2, 'c': 3 };
for (...
int a[] = {1,2,}; Weird comma allowed. Any particular reason?
...or not, and you can reorder lines without fiddling about with commas. Basically it means there's a uniformity in how you treat the lines.
Now think about generating code. Something like (pseudo-code):
output("int a[] = {");
for (int i = 0; i < items.length; i++) {
output("%s, ", items[i]);
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Keep ignored files out of git status
...or untracked files. If you added files to repository, you can:
git update-index --assume-unchanged <file>
or remove them from repository by
git rm --cached <file>
Edit
This article explains that too
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MySQL string replace
...eve in this case the WHERE is useless because a LIKE '%%' does not use any indexes, if there were other parts in that WHERE, for example something like date_added > '2014-07-01' it might have helped
– Fabrizio
Sep 23 '14 at 22:35
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How do I put two increment statements in a C++ 'for' loop?
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I came here to remind myself how to code a second index into the increment clause of a FOR loop, which I knew could be done mainly from observing it in a sample that I incorporated into another project, that written in C++.
Today, I am working in C#, but I felt sure that it...
Expand a random range from 1–5 to 1–7
...dart until you hit a non-zero. That's what this code is doing: the i and j indexes randomly select a location on the dart board, and if we don't get a good result, we keep throwing darts.
Like Adam said, this can run forever in the worst case, but statistically the worst case never happens. :)
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How to determine if Javascript array contains an object with an attribute that equals a given value?
...whether or not "something" is in, you can just check the value of the scan index with the size of array. For this to work the index var needs to be declared before the for statement of course.
– Alex
Oct 29 '14 at 21:05
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Counting the occurrences / frequency of array elements
...haps a third-party for-loop, but I sort of ignored that since the standard index-based for-loops are sadly the default.
– ninjagecko
May 25 '11 at 18:51
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how do I insert a column at a specific column index in pandas?
Can I insert a column at a specific column index in pandas?
4 Answers
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