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++someVariable vs. someVariable++ in JavaScript
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Same as in other languages:
++m>x m> (pre-increment) means "increment the variable; the value of the em>x m>pression is the final value"
m>x m>++ (post-increment) means "remember the original value, then increment the variable; the value of the em>x m>pression is the origina...
Application auto build versioning
...nk) has an option to set the value of an uninitialised string variable:
-m>X m> importpath.name=value
Set the value of the string variable in importpath named name to
value.
Note that before Go 1.5 this option took two separate arguments.
Now it takes one argument split on the firs...
Em>x m>tract subset of key-value pairs from Python dictionary object?
...u're using Python 3, and you only want keys in the new dict that actually em>x m>ist in the original one, you can use the fact to view objects implement some set operations:
{k: bigdict[k] for k in bigdict.keys() & {'l', 'm', 'n'}}
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How to tell whether a point is to the right or left side of a line
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Use the sign of the determinant of vectors (AB,AM), where M(m>X m>,Y) is the query point:
position = sign((Bm>x m> - Am>x m>) * (Y - Ay) - (By - Ay) * (m>X m> - Am>x m>))
It is 0 on the line, and +1 on one side, -1 on the other side.
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How to modify a global variable within a function in bash?
... numerical value from 0-255, you can use return to pass the number as the em>x m>it status:
mysecondfunc() {
echo "Hello"
return 4
}
var="$(mysecondfunc)"
num_var=$?
echo "$var - num is $num_var"
Gives:
Hello - num is 4
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Principal component analysis in Python
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I have not had the chance to test it myself, but I've bookmarked it em>x m>actly for the PCA functionality.
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Python: print a generator em>x m>pression?
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Quick answer:
Doing list() around a generator em>x m>pression is (almost) em>x m>actly equivalent to having [] brackets around it. So yeah, you can do
>>> list((m>x m> for m>x m> in string.letters if m>x m> in (y for y in "BigMan on campus")))
But you can just as well do
>>&gt...
Rounded UIView using CALayers - only some corners - How?
...class:
@interface MyView : UIImageView
{
}
I'd never used graphics contem>x m>ts before, but I managed to hobble together this code. It's missing the code for two of the corners. If you read the code, you can see how I implemented this (by deleting some of the CGContem>x m>tAddArc calls, and deleting some ...
OS m>X m> Terminal Colors [closed]
I'm new to OS m>X m>, having just gotten a Mac after working with Ubuntu Linum>x m> for some time. Among the many things I'm trying to figure out is the absence of colors in my terminal window - like the ones that are shown (on Linum>x m>) when running ls -la or git status ...
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Why does this method print 4?
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I think the others have done a good job at em>x m>plaining why cnt > 0, but there's not enough details regarding why cnt = 4, and why cnt varies so widely among different settings. I will attempt to fill that void here.
Let
m>X m> be the total stack size
M be the stack sp...