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How do I update a formula with Homebrew?
How do I update a formula?
6 Answers
6
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List of zeros in python [duplicate]
...st which contains only zeros? I want to be able to create a zeros list for each int in range(10)
8 Answers
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How to include external Python code to use in other files?
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You will need to import the other file as a module like this:
import Math
If you don't want to prefix your Calculate function with the module name then do this:
from Math import Calculate
If you want to import all members of a module then ...
How to remove a lambda event handler [duplicate]
...iscovered that I can use lambdas to create simple event handlers. I could for example subscribe to a click event like this:
...
Is there a math nCr function in python? [duplicate]
...program calculates nCr in an efficient manner (compared to calculating factorials etc.)
import operator as op
from functools import reduce
def ncr(n, r):
r = min(r, n-r)
numer = reduce(op.mul, range(n, n-r, -1), 1)
denom = reduce(op.mul, range(1, r+1), 1)
return numer // denom # o...
Remove duplicate entries using a Bash script [duplicate]
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You can sort then uniq:
$ sort -u input.txt
Or use awk:
$ awk '!a[$0]++' input.txt
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Argparse: Required arguments listed under “optional arguments”?
...simple code to parse some arguments; note that one of them is required. Unfortunately, when the user runs the script without providing the argument, the displayed usage/help text does not indicate that there is a non-optional argument, which I find very confusing. How can I get python to indicate th...
Multiline syntax for piping a heredoc; is this portable?
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Yes, the POSIX standard allows this. According to the 2008 version:
The here-document shall be treated as a single word that begins after
the next <newline> and continues until there is a line containing only
the delimiter and a <newline>, with ...
Using the rJava package on Win7 64 bit with R
...ava will find the jvm.dll automatically, without manually setting the PATH or JAVA_HOME. However note that:
To use rJava in 32-bit R, you need Java for Windows x86
To use rJava in 64-bit R, you need Java for Windows x64
To build or check R packages with multi-arch (the default) you need to instal...
How do I test for an empty JavaScript object?
...ome additional check
Object.keys(obj).length === 0 && obj.constructor === Object
Note, though, that this creates an unnecessary array (the return value of keys).
Pre-ECMA 5:
function isEmpty(obj) {
for(var prop in obj) {
if(obj.hasOwnProperty(prop)) {
return false;
}
}
...