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Backporting Python 3 open(encoding=“utf-8”) to Python 2
I have a Python codebase, built for Python 3, which uses Python 3 style open() with encoding parameter:
6 Answers
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Rebase feature branch onto another feature branch
... branch is not fully merged. I assume I can safely ignore this message and force the delete?
– Arjen
Feb 15 '13 at 11:28
13
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Scala: Nil vs List()
... Isn't List[A]() (not Nil) necessary as an accumulator value for foldLeft? Example - scala> Map(1 -> "hello", 2 -> "world").foldLeft(List[String]())( (acc, el) => acc :+ el._2) res1: List[String] = List(hello, world) Using Nil as the accumulator here wouldn't work.
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Why is my xlabel cut off in my matplotlib plot?
...set using matplotlib where I have an xlabel that is quite "tall" (it's a formula rendered in TeX that contains a fraction and is therefore has the height equivalent of a couple of lines of text).
...
WPF TemplateBinding vs RelativeSource TemplatedParent
...pile time against the type specified in the control template. This allows for much faster instantiation of compiled templates. Just fumble the name in a templatebinding and you'll see that the compiler will flag it.
The binding markup is resolved at runtime. While slower to execute, the bindin...
Are “elseif” and “else if” completely synonymous?
...l with a parse error.
Which means that in the normal control structure form (ie. using braces):
if (first_condition)
{
}
elseif (second_condition)
{
}
either elseif or else if can be used. However, if you use the alternate syntax, you must use elseif:
if (first_condition):
// ...
elseif ...
If string is empty then return some default value
...f you wanted a reasonable default value everywhere in your app, you could (for example) override the address method for your User model.
I don't know ActiveRecord well enough to provide good code for this; in Sequel it would be something like:
class User < Sequel::Model
def address
...
How is Generic Covariance & Contra-variance Implemented in C# 4.0?
...work - but a few other scenarios will.
Firstly, it will only be supported for interfaces and delegates.
Secondly, it requires the author of the interface/delegate to decorate the type parameters as in (for contravariance) or out (for covariance). The most obvious example is IEnumerable<T> wh...
Git: How to diff two different files in different branches?
...
Sidenote: no need for full paths, you can start with ./ for relative paths. It can be handy sometimes.
git diff branch1:./relative/path/to/foo.txt branch2:./relative/path/to/foo-another.txt
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How to save an HTML5 Canvas as an image on a server?
...e';
context.stroke();
</script>
Convert canvas image to URL format (base64)
var dataURL = canvas.toDataURL();
Send it to your server via Ajax
$.ajax({
type: "POST",
url: "script.php",
data: {
imgBase64: dataURL
}
}).done(function(o) {
...