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Alter MySQL table to add comments on columns
...
Script for all fields on database:
SELECT
table_name,
column_name,
CONCAT('ALTER TABLE `',
TABLE_SCHEMA,
'`.`',
table_name,
'` CHANGE `',
column_name,
'` `',
column_nam...
SQLite: How do I save the result of a query as a CSV file?
...e sqlite command line, which isn't ideal if you'd like to build a reusable script. Python makes it easy to build a script that can be executed programatically.
import pandas as pd
import sqlite3
conn = sqlite3.connect('your_cool_database.sqlite')
df = pd.read_sql('SELECT * from orders', conn)
df....
General suggestions for debugging in R
...nough information, I usually use the debug() function and step through the script line by line.
The best new trick in R 2.10 (when working with script files) is to use the findLineNum() and setBreakpoint() functions.
As a final comment: depending upon the error, it is also very helpful to set ...
Why is using onClick() in HTML a bad practice?
I have heard many times that using JavaScript events, such as onClick() , in HTML is a bad practice, because it's not good for semantics. I would like to know what the downsides are and how to fix the following code?
...
Differences between .NET 4.0 and .NET 4.5 in High level in .NET
... many platforms and languages, including .NET Framework, C++ and HTML5/JavaScript.
2. Core Features
Ability to limit how long the regular expression engine will attempt
to resolve a regular expression before it times out.
Ability to define the culture for an application domain.
Console support f...
How to print a debug log?
... As one who spends a lot of time writing console apps and various non web scripts, I will politely disagree with that.
– stefgosselin
May 21 '11 at 12:33
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What is Node.js? [closed]
...
I think the advantages are:
Web development in a dynamic language (JavaScript) on a VM that is incredibly fast (V8). It is much faster than Ruby, Python, or Perl.
Ability to handle thousands of concurrent connections with minimal overhead on a single process.
JavaScript is perfect for event loop...
Hide div after a few seconds
...
background: #000;
color: #fff;
text-align: center;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="mydiv">myDiv</div>
If you just want to hide without fading, use hide().
...
Zoom to fit all markers in Mapbox or Leaflet
...p.getBounds());
}
}
.mymap{
height: 300px;
width: 100%;
}
<script src="https://unpkg.com/leaflet@1.3.1/dist/leaflet.js"></script>
<link href="https://unpkg.com/leaflet@1.3.1/dist/leaflet.css" rel="stylesheet"/>
<div id="map" class="mymap"></div>
<bu...
JavaScript dependency management: npm vs. bower vs. volo [closed]
...
A description that best describes the difference between npm and bower is: npm manages JavaScript modules called packages and Bower manages front-end components (i.e. css, html, and JavaScript) called components. npm is also used...