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What's the absurd function in Data.Void useful for?
...pe is involved in the return type of a function.
absurd arises when we're converting between these two representations.
For example, callcc :: ((a -> m b) -> m a) -> m a uses (implicit) forall b. It could be as well of type ((a -> m Void) -> m a) -> m a, because a call to the c...
What are Scala context and view bounds?
...A <% Ordered[A]](a: A, b: A) = if (a < b) a else b
Because one can convert A into an Ordered[A], and because Ordered[A] defines the method <(other: A): Boolean, I can use the expression a < b.
Please be aware that view bounds are deprecated, you should avoid them.
What is a Context B...
Python __str__ versus __unicode__
...tted and someone calls unicode(o) or u"%s"%o, Python calls o.__str__() and converts to unicode using the system encoding. (See documentation of __unicode__().)
The opposite is not true. If you implement __unicode__() but not __str__(), then when someone calls str(o) or "%s"%o, Python returns repr...
Mercurial move changes to a new branch
...et's say the changesets to move are revisions 1-3:
hg qimport -r 1:3 # convert revisions to patches
hg qpop -a # remove all them from history
hg branch new # start a new branch
hg qpush -a # push them all back into history
hg qfin -a # finalize the patches
...
Can I mask an input text in a bat file?
... cmd.exe scripts (such as if you have a lot of code that you don't want to convert), you can use the same trick.
First, modify the cmd script so it calls Powershell rather than CScript:
@echo off
for /f "delims=" %%i in ('powershell -file getpwd.ps1') do set passwd=%%i
The Powershell script is e...
Shortest distance between a point and a line segment
...t notice someone had supplied a 3D version. @RogiSolorzano, you'll need to convert the lat,long coordinates into x,y,z coordinates in 3-space first.
– Grumdrig
Dec 24 '17 at 5:42
...
What is Autoloading; How do you use spl_autoload, __autoload and spl_autoload_register?
...lternate universes, please add that spl_autoload very, um, "helpfully" (?) converts all filenames to lowercase (see my comment to @user below). Can't use spl_autoload_register() vanilla if you like your CapitalLettersAndStuff.
– Just Plain High
Nov 28 '13 at 4:...
What is Unicode, UTF-8, UTF-16?
...o input/output something other than the default encoding, you will have to convert it first.
Recommended/default/dominant encodings: When given a choice of which UTF to use, it is usually best to follow recommended standards for the environment you are working in. For example, UTF-8 is dominant on ...
How do I include inline JavaScript in Haml?
.../tr>
{% } %}
</script>
At first I used the :cdata to convert (from html2haml), it doesn't work properly (Delete button can't remove relevant component in callback).
<script id='template-download' type='text/x-tmpl'>
<![CDATA[
{% for (var i=0, fil...
'and' (boolean) vs '&' (bitwise) - Why difference in behavior with lists vs numpy arrays?
...f the statement 'my car has wheels') => number
If python knows how to convert the statements to numeric values, then it will do so and compute the bitwise-and of the two values. This may lead you to believe that & is interchangeable with and, but as with the above example they are different...