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Prepend a level to a pandas MultiIndex
...to the columns by adding axis=1, since the df.columns doesn't have the "set_index" method like the index, which always bugs me.
– Rutger Kassies
Feb 10 '17 at 12:32
2
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How to concatenate and minify multiple CSS and JavaScript files with Grunt.js (0.3.x)
...compressor:
module.exports = function(grunt) {
var exec = require('child_process').exec;
grunt.registerTask('cssmin', function() {
var cmd = 'java -jar -Xss2048k '
+ __dirname + '/../yuicompressor-2.4.7.jar --type css '
+ grunt.template.process('/css/style.css') + ' -o '
...
Advantage of switch over if-else statement
...he clearest code is probably:
if (RequiresSpecialEvent(numError))
fire_special_event();
Obviously this just moves the problem to a different area of the code, but now you have the opportunity to reuse this test. You also have more options for how to solve it. You could use std::set, for exa...
Google Authenticator implementation in Python
...m/tadeck/onetimepass).
import hmac, base64, struct, hashlib, time
def get_hotp_token(secret, intervals_no):
key = base64.b32decode(secret, True)
msg = struct.pack(">Q", intervals_no)
h = hmac.new(key, msg, hashlib.sha1).digest()
o = ord(h[19]) & 15
h = (struct.unpack("&g...
Advantages of std::for_each over for loop
Are there any advantages of std::for_each over for loop? To me, std::for_each only seems to hinder the readability of code. Why do then some coding standards recommend its use?
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How to unset a JavaScript variable?
...ed.
(1) If it is created with var, it cannot be deleted.
For example:
var g_a = 1; //create with var, g_a is a variable
delete g_a; //return false
console.log(g_a); //g_a is still 1
(2) If it is created without var, it can be deleted.
g_b = 1; //create without var, g_b is a property
delete g_b; /...
What does “zend_mm_heap corrupted” mean
... to check the Apache's error log, and I found an error message saying "zend_mm_heap corrupted". What does this mean.
37 An...
Does Java SE 8 have Pairs or Tuples?
...
public static void main(String[] args) {
boolean [][] directed_acyclic_graph = new boolean[][]{
{false, true, false, true, false, true},
{false, false, false, true, false, true},
{false, false, false, true, false, true},
...
How does this site infecting script work?
...g how to protect if you know their backdoors. I changed forms and reading $_POST and $_GET with replacing <> and http:// etc.
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Verifying signed git commits?
...ge and pull operations checked if the key had a trust-level of either TRUST_NEVER or TRUST_UNDEFINED in verify_merge_signature().
If that was the case, the process die()'d.
The other code paths that did signature verification relied entirely on the return code from check_commit_signature...