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Decorators with parameters?
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The syntax for decorators with arguments is a bit different - the decorator with arguments should return a function that will take a function and return another function. So it should really return a normal decorator. A bit confusing, r...
Java: Date from unix timestamp
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For 1280512800, multiply by 1000, since java is expecting milliseconds:
java.util.Date time=new java.util.Date((long)timeStamp*1000);
If you already had milliseconds, then just new java.util.Date((long)timeStamp);
From t...
How do you access the matched groups in a JavaScript regular expression?
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You can access capturing groups like this:
var myString = "something format_abc";
var myRegexp = /(?:^|\s)format_(.*?)(?:\s|$)/g;
var match = myRegexp.exec(myString);
console.log(match[1]); // abc
And if there are multiple matches you can iterate over them:
var myString = "somet...
Hidden features of Perl?
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The flip-flop operator is useful for skipping the first iteration when looping through the records (usually lines) returned by a file handle, without using a flag variable:
while(<$fh>)
{
next if 1..1; # skip first record
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}
Run perldoc perlo...
How do I uniquely identify computers visiting my web site?
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These people have developed a fingerprinting method for recognising a user with a high level of accuracy:
https://panopticlick.eff.org/static/browser-uniqueness.pdf
We investigate the degree to which modern web browsers
are subject to “device fingerprintin...
Recursive sub folder search and return files in a list python
...n't wish os.walk to recurse into.
import os
result = [os.path.join(dp, f) for dp, dn, filenames in os.walk(PATH) for f in filenames if os.path.splitext(f)[1] == '.txt']
Edit:
After the latest downvote, it occurred to me that glob is a better tool for selecting by extension.
import os
from glob ...
hash function for string
I'm working on hash table in C language and I'm testing hash function for string.
9 Answers
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What are the GCC default include directories?
...ir priorities, you need to examine the output of the following commands:
For C:
gcc -xc -E -v -
For C++:
gcc -xc++ -E -v -
The credit goes to Qt Creator team.
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Rename MySQL database [duplicate]
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This could be a reason for marketing. Many MySQL hosting providers are offering you a free but randomly and banal named database name but if you wish to rename it to something simple and readable, then you pretty much have to pay for it.
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What do the python file extensions, .pyc .pyd .pyo stand for?
... make importing it again later easier (and faster).
.pyo: This was a file format used before Python 3.5 for *.pyc files that were created with optimizations (-O) flag. (see the note below)
.pyd: This is basically a windows dll file. http://docs.python.org/faq/windows.html#is-a-pyd-file-the-same-as-...