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What is your preferred style for naming variables in R? [closed]
...e full paper is here:
http://journal.r-project.org/archive/2012-2/RJournal_2012-2_Baaaath.pdf
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How to do an instanceof check with Scala(Test)
... tiger shouldBe a [Tiger] is the current syntax scalatest.org/at_a_glance/FlatSpec
– jhegedus
May 16 '17 at 4:06
2
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Why does pylint object to single character variable names?
...riptive and not too short.
You can use this to avoid such short names:
my_list.extend(x_values)
Or tweak PyLint's configuration to tell PyLint what variable name are good.
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Unique BooleanField value in Django?
...rn it off).
class Character(models.Model):
name = models.CharField(max_length=255)
is_the_chosen_one = models.BooleanField()
def save(self, *args, **kwargs):
if self.is_the_chosen_one:
try:
temp = Character.objects.get(is_the_chosen_one=True)
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How to get first element in a list of tuples?
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do you mean something like this?
new_list = [ seq[0] for seq in yourlist ]
What you actually have is a list of tuple objects, not a list of sets (as your original question implied). If it is actually a list of sets, then there is no first element because set...
VIM Ctrl-V Conflict with Windows Paste
...key back to VIM visual mode instead of pasting. I prefer to set this in my _vimrc configuration file.
7 Answers
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See changes to a specific file using git
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Use a command like:
git diff file_2.rb
See the git diff documentation for full information on the kinds of things you can get differences for.
Normally, git diff by itself shows all the changes in the whole repository (not just the current directory).
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How to play audio?
...If you don't want to mess with HTML elements:
var audio = new Audio('audio_file.mp3');
audio.play();
function play() {
var audio = new Audio('https://interactive-examples.mdn.mozilla.net/media/examples/t-rex-roar.mp3');
audio.play();
}
<button onclick="play()">Play Audio</but...
Chain-calling parent initialisers in python [duplicate]
...Python 3 includes an improved super() which allows use like this:
super().__init__(args)
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How to compile and run C/C++ in a Unix console/Mac terminal?
...pp -o main.out", and get this error, Undefined symbols for architecture x86_64: "std::__1::locale::use_facet(std::__1::locale::id&) const", ... turns out the reason is, gcc default-links is libc. while using g++ will link with libstdc++. So use "g++ main.cpp -o main.out" may be better.
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