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What is a “cache-friendly” code?
...is crucial for performance since every cache miss results in fetching data from RAM (or worse ...) which takes a lot of time (hundreds of cycles for RAM, tens of millions of cycles for HDD). In comparison, reading data from the (highest level) cache typically takes only a handful of cycles.
In moder...
Find the most frequent number in a numpy vector
...ng numpy, collections.Counter is a good way of handling this sort of data.
from collections import Counter
a = [1,2,3,1,2,1,1,1,3,2,2,1]
b = Counter(a)
print(b.most_common(1))
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Disabling browser caching for all browsers from ASP.NET
...definitive reference to what ASP.NET code is required to disabled browsers from caching the page. There are many ways to affect the HTTP headers and meta tags and I get the impression different settings are required to get different browsers to behave correctly. It would be really great to get a ref...
How do I start Mongo DB from Windows?
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Download from http://www.mongodb.org/downloads
Install .msi file in folder C:\mongodb
Create data, data\db, log directories and mongo.config file under C:\mongodb.
Add the following lines in "mongo.config" file
port=27017
dbpath=C:\m...
Convert from java.util.date to JodaTime
...rry out subtractions between dates. Is there a good concise way to convert from Date to JodaTime ?
2 Answers
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Java - get pixel array from image
I'm looking for the fastest way to get pixel data (int the form int[][] ) from a BufferedImage . My goal is to be able to address pixel (x, y) from the image using int[x][y] . All the methods I have found do not do this (most of them return int[] s).
...
Checkout another branch when there are uncommitted changes on the current branch
...y means "Commit all the changes, but on no branch at all, then remove them from where I am now." That makes it possible to switch: you now have no in-progress changes. You can then git stash apply them after switching.
Sidebar: git stash save is the old syntax; git stash push was introduced in...
Add text to Existing PDF using Python
... with canvas>
can.save()
packet.seek(0)
input = PdfFileReader(packet)
From here you can merge the pages of the input file with another document.
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How do I split a string on a delimiter in Bash?
...
Taken from Bash shell script split array:
IN="bla@some.com;john@home.com"
arrIN=(${IN//;/ })
Explanation:
This construction replaces all occurrences of ';' (the initial // means global replace) in the string IN with ' ' (a sing...
Where is JAVA_HOME on macOS Mojave (10.14) to Lion (10.7)?
...ging the output of /usr/libexec/java_home.
Even after installing 1.7.0 u6 from Oracle on Lion and setting it as the default in the preferences, it still returned the apple 1.6 java home. The only fix that actually works for me is setting JAVA_HOME manually:
export JAVA_HOME=/Library/Java/JavaVirtu...