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Pandas count(distinct) equivalent
...col).strip() for col in grp_df.columns.values]
# if you wish to reset the index
grp_df.reset_index(inplace=True)
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node.js global variables?
... platform: 'darwin',
argv: [ 'node', '/workspace/zd/zgap/darwin-js/index.js' ],
stdin: [Getter],
env:
{ TERM_PROGRAM: 'iTerm.app',
'COM_GOOGLE_CHROME_FRAMEWORK_SERVICE_PROCESS/USERS/DDOPSON/LIBRARY/APPLICATION_SUPPORT/GOOGLE/CHROME_SOCKET': '/tmp/launch-nNl1vo/Servic...
Possible to make labels appear when hovering over a point in matplotlib?
... Very nice! One note, I noticed that ind["ind"] is actually a list of indexes for all points under the curser. This means that the above code actually gives you access to all points at a given position, and not just the top most point. For instance, if you have two overlapping points the text c...
How can I access the MySQL command line with XAMPP for Windows?
How can I access the MySQL command line with XAMPP for Windows?
15 Answers
15
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SHA512 vs. Blowfish and Bcrypt [closed]
...GPUs as a tool for attacking SHA-2–based hashes; because of its memory requirements, optimizing bcrypt requires more specialized hardware like FPGA with some on-board RAM.
Note: bcrypt is an algorithm that uses Blowfish internally. It is not an encryption algorithm itself. It is used to irrever...
Show loading image while $.ajax is performed
...dden;
background-color: rgba(255,255,255,0.7);
position: absolute;
z-index: +100 !important;
width: 100%;
height:100%;
}
.ajax-loader img {
position: relative;
top:50%;
left:50%;
}
JQUERY Code:
$.ajax({
type:'POST',
beforeSend: function(){
$('.ajax-loader').css("visibilit...
subtle differences between JavaScript and Lua [closed]
... JS uses ^.
In Lua, any type of value (except nil and NaN) can be used to index a table. In JavaScript, all non-string types (except Symbol) are converted to strings before being used to index an object. For example, after evaluation of the following code, the value of obj[1] will be "string one" i...
Eclipse git checkout (aka, revert)
...
This can be done via the context menu "Replace with/File in Git index" on the file in package view.
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Iterate through pairs of items in a Python list [duplicate]
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Referencing a list item by index is something of an anti-pattern in Python (except when the items must be access out-of-sequence). See github.com/JeffPaine/…
– Ian Goldby
Jan 13 at 13:16
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Concurrent HashSet in .NET Framework?
...> doesn't officially concurrent access, even for reading operations.
I quote the code of the linked post (originally written by Ben Mosher).
using System;
using System.Collections.Generic;
using System.Threading;
namespace BlahBlah.Utilities
{
public class ConcurrentHashSet<T> : IDis...