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Are there disadvantages to using a generic varchar(255) for all text-based fields?
...s postcode , first name , last name , town , country , phone number etc, all of which are defined as VARCHAR(255) even though none of these fields will ever come close to having 255 characters. (If you're wondering, it's this way because Ruby on Rails migrations map String fields to VARCH...
Zoom in on a point (using scale and translate)
...
var canvas = document.getElementById("canvas");
var context = canvas.getContext("2d");
var width = 600;
var height = 200;
var scale = 1;
var originx = 0;
var originy = 0;
var visibleWidth = width;
var visibleHeight = height;
function draw(){
// Clear screen to white.
con...
How to use a class from one C# project with another C# project
...such as filetype.py, filetype.java, filetype.c, filetype.cpp, filetype.C#, etc. or a library class file type (something other than startup file options you see when you create a new application project or create a new library project).
A new file name with default name is created in your project.
Ch...
How to compare strings in Bash
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Thanks for the string alphabetical order comparison
– shadi
Feb 21 '16 at 11:48
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How to read a single char from the console in Java (as the user types it)?
...ersions, 64/32 bit, Linux via SSH, Telnet, serial port or desktop console, etc.). So far I only use it in my private test tools. But the source code is relatively small, compared to other solutions (like JLine2 which uses Jansi). So there is not much that can go wrong. I wrote it, because JLine2 doe...
Detect if a NumPy array contains at least one non-numeric value?
...0us
%timeit np.isnan(array1M).any() # 532us
The early-exit method is 3 orders or magnitude speedup (in some cases).
Not too shabby for a simple annotation.
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How to write WinForms code that auto-scales to system font and dpi settings?
...t the wisdom on the internet says to stick to 96dpi;
experimentation is in order there; by design, it shouldn't matter as it just changes the AutoScaleDimensions line that the designer inserts).
To set Visual Studio to run at a virtual 96dpi on a high-resolution display,
find its .exe file, right-cl...
What is the difference between a thread and a fiber?
...eralization and may not always hold true depending on OS/threading package/etc.). This means that for threads, data integrity is a big issue because one thread may be stopped in the middle of updating a chunk of data, leaving the integrity of the data in a bad or incomplete state. This also means th...
Using Node.js only vs. using Node.js with Apache/Nginx
...tatic files as so many (every?) competing technologies (PHP, Ruby, Python, etc) require a web server like HTTPD or Nginx in front of the application server(s).
Every objective reason I have ever read against serving static files with Node revolves around the idea of using what you know best or usin...
Completely cancel a rebase
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