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How can I upload files asynchronously?
...rk but there are still clusters of higher usage.
The important take-away from this —whatever the feature— is, check what browser your users use. If you don't, you'll learn a quick and painful lesson in why "works for me" isn't good enough in a deliverable to a client. caniuse is a useful tool ...
Get the real width and height of an image with JavaScript? (in Safari/Chrome)
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Use the naturalHeight and naturalWidth attributes from HTML5.
For example:
var h = document.querySelector('img').naturalHeight;
Works in IE9+, Chrome, Firefox, Safari and Opera (stats).
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What is thread contention?
...e a lock is one type of thing that there can be contention over, it is far from the only such thing. There can be contention for lockless resources as well. (For example, if two threads keep atomically incrementing the same integer, they may experience contention due to cache ping-ponging. No locks ...
Large, persistent DataFrame in pandas
...., to an SQLite database step by step:
import pandas as pd
import sqlite3
from pandas.io import sql
import subprocess
# In and output file paths
in_csv = '../data/my_large.csv'
out_sqlite = '../data/my.sqlite'
table_name = 'my_table' # name for the SQLite database table
chunksize = 100000 # numbe...
Calling the base constructor in C#
If I inherit from a base class and want to pass something from the constructor of the inherited class to the constructor of the base class, how do I do that?
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Is it possible to simulate key press events programmatically?
... What I meant is: 1. Register a key event (letter e executes some JS) 2. From a other method I want to programatically press the letter e)
– tan
Mar 3 '09 at 20:20
10
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Reset local repository branch to be just like remote repository HEAD
...ranches push/pull with each other (e.g. if your "master" branch was cloned from "master" in the remote named "origin", then you'll get a line that says "master merges with remote master").
– Dan Moulding
Oct 27 '09 at 13:51
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In Functional Programming, what is a functor?
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The word "functor" comes from category theory, which is a very general, very abstract branch of mathematics. It has been borrowed by designers of functional languages in at least two different ways.
In the ML family of languages, a functor is a mo...
How do I convert a git repository to mercurial?
...using TortoiseHg, it can be enabled by using the Global Settings menu item from the TortoiseHg shell extension menu in the Extensions section under Global Settings.
– Umar Farooq Khawaja
May 2 '14 at 12:22
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What are the advantages of using a schema-free database like MongoDB compared to a relational databa
...speak french, take a look at this article explaining how to set up MongoDB from scratch.
Edit: I almost forgot to tell you about this railscast by Ryan. It's very interesting and makes you want to start right away!
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