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Is the != check thread safe?
...d use multiple threads but didn't fail. I guess could not simulate race on my machine.
That doesn't mean anything! The issue is that if an execution in which a is updated by another thread is allowed by the JLS, then the code is not thread-safe. The fact that you cannot cause the race condition ...
File is universal (three slices), but it does not contain a(n) ARMv7-s slice error for static librar
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In case this happens to someone. I built my own library to use with a third party code. While I was building it to deliver, I accidentally left my iPhone 4S plugged in, and so Xcode built my library only for the plugged architecture instead of following the project ...
How can I detect if a selector returns null?
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My favourite is to extend jQuery with this tiny convenience:
$.fn.exists = function () {
return this.length !== 0;
}
Used like:
$("#notAnElement").exists();
More explicit than using length.
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Extracting specific columns from a data frame
... Given the considerably evolution of the Tidyverse since posting my question, I've switched the answer to you.
– Aren Cambre
Aug 16 '18 at 13:58
4
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'heroku' does not appear to be a git repository
When I try to push my app to Heroku I get this response:
20 Answers
20
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Exclude .svn directories from grep [duplicate]
When I grep my Subversion working copy directory, the results include a lot of files from the .svn directories. Is it possible to recursively grep a directory, but exclude all results from .svn directories?
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How to execute a Ruby script in Terminal?
I've set everything up that I need on my Mac (Ruby, Rails, Homebrew, Git, etc), and I've even written a small program. Now, how do I execute it in Terminal? I wrote the program in Redcar and saved it as a .rb, but I don't know how to execute it through Terminal. I want to run the program and see if ...
Nginx not picking up site in sites-enabled?
...research I have not figured out why this doesn't work! I am trying to move my localhost to my sites-enabled folder which is in /etc/nginx/sites-enabled/default.
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Detect rotation of Android phone in the browser with JavaScript
...ing for a solution that also works on iOS should look at two-bit-fool's or my answer.
– mklement0
Dec 10 '12 at 16:39
4
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Load “Vanilla” Javascript Libraries into Node.js
...a much better method than using eval: the vm module.
For example, here is my execfile module, which evaluates the script at path in either context or the global context:
var vm = require("vm");
var fs = require("fs");
module.exports = function(path, context) {
context = context || {};
var data...