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Reshaping data.frame from wide to long format
... Sorry to necro this post - could someone explain to me why 3 works? I've tested it and it works, but I don't understand what dplyr is doing when it sees -c(var1, var2)...
– user5930691
Nov 16 '19 at 18:04
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Changing overflow icon in the action bar
...le you have that is named ic_menu_moreoverflow. If you want a quick way to test it out, use your app's launcher icon filename, which will make it obvious how it works.
A useful resource to use when trying to understand ActionBar styling, is:
Android Action Bar Style Generator
There you can defi...
How can I make the computer beep in C#?
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I just tested in Win 7 x64 RC, and although the internal speaker didn't beep, there was a beep through speakers when I had them plugged in and on. I guess it's just the internal (mobo) speaker that won't beep. Thanks for the info ...
What is the maximum recursion depth in Python, and how to increase it?
...ython script
What is the hard recursion limit for Linux, Mac and Windows?
Tested on Ubuntu 16.10, Python 2.7.12.
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R memory management / cannot allocate vector of size n Mb
...e.
the other trick is to only load train set for training (do not load the test set, which can typically be half the size of train set). The training phase can use memory to the maximum (100%), so anything available is useful. All this is to take with a grain of salt as I am experimenting with R mem...
How do I “decompile” Java class files? [closed]
... of J2SE 5.0 (Java SE 5), has been published on September 30, 2004.
The lastest Java version supported by JAD, the famous Java decompiler written by Mr. Pavel Kouznetsov, is JDK 1.3.
Most of the Java decompilers downloadable today from the Internet, such as “DJ Java Decompiler” or “Cavaj Java ...
Why doesn't print work in a lambda?
...compatibility :) use the back-ported print function if you are using the latest Python 2.x:
In [1324]: from __future__ import print_function
In [1325]: f = lambda x: print(x)
In [1326]: f("HI")
HI
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check if jquery has been loaded, then load it if false
... example 1: include_once('http://www.phpjs.org/js/phpjs/_supporters/pj_test_supportfile_2.js');
// * returns 1: true
var cur_file = {};
cur_file[this.window.location.href] = 1;
// BEGIN STATIC
try { // We can't try to access on window, since it might not exist in some environments...
Does Qt support virtual pure slots?
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Thanks for your precise answer ! I'll test this as soon as possible ;)
– ereOn
Jun 8 '10 at 14:47
3
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How to remove all listeners in an element? [duplicate]
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I think that the fastest way to do this is to just clone the node, which will remove all event listeners:
var old_element = document.getElementById("btn");
var new_element = old_element.cloneNode(true);
old_element.parentNode.replaceChild(new_e...