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How to get row from R data.frame
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10 years later ---> Using tidyverse we could achieve this simply and borrowing a leaf from Christopher Bottoms. For a better grasp, see slice().
library(tidyverse)
x <- structure(list(A = c(5, 3.5, 3.25, 4.25, 1.5 ),
B = c(4.25, 4, 4, 4.5, 4.5 ),
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Adding code to a javascript function programmatically
...de. This code loads in a few external JS files which I do have access to, and what I'd like to do is change one of the functions contained in the original file without copying and pasting the whole thing into the second JS file.
So for example, the off limits JS might have a function like this:
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Twitter Bootstrap: div in container with 100% height
Using twitter bootstrap (2), I have a simple page with a nav bar, and inside the container I want to add a div with 100% height (to the bottom of the screen). My css-fu is rusty, and I can't work this out.
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Declare a constant array
...hey are created at compile time, even when defined as locals in functions, and can only be numbers, characters (runes), strings or booleans. Because of the compile-time restriction, the expressions that define them must be constant expressions, evaluatable by the compiler. For instance, 1<<3 i...
Visual Studio Post Build Event - Copy to Relative Directory Location
...tion under the same "base" folder. This parent folder is a relative part and can vary based on Source Control settings.
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Is == in PHP a case-sensitive string comparison?
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== is case sensitive, some other operands from the php manual to familiarize yourself with
http://www.php.net/manual/en/language.operators.comparison.php
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How to pipe stdout while keeping it on screen ? (and not to a output file)
I would like to pipe standard output of a program while keeping it on screen.
5 Answers
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List all the files that ever existed in a Git repository
...eaching me a bit more in the comments, this version has a shorter pipeline and gives git more opportunity to get things right.
git log --pretty=format: --name-only --diff-filter=A | sort -u
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What is the meaning of polyfills in HTML5?
...e, since it is used in conjunction with HTML5, but it's not part of HTML5, and you can have polyfills without having HTML5 (for example, to support CSS3 techniques you want).
Here's a good post:
http://remysharp.com/2010/10/08/what-is-a-polyfill/
Here's a comprehensive list of Polyfills and Shims...
How to check if std::map contains a key without doing insert?
The only way I have found to check for duplicates is by inserting and checking the std::pair.second for false , but the problem is that this still inserts something if the key is unused, whereas what I want is a map.contains(key); function.
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