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How can I find non-ASCII characters in MySQL?
I'm working with a MySQL database that has some data imported from Excel . The data contains non- ASCII characters (em dashes, etc.) as well as hidden carriage returns or line feeds. Is there a way to find these records using MySQL?
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Is it safe to use -1 to set all bits to true?
... since it is the most straight forward one. Initialize to -1 which will work always, independent of the actual sign representation, while ~ will sometimes have surprising behavior because you will have to have the right operand type. Only then you will get the most high value of an unsigned type.
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What's the algorithm to calculate aspect ratio?
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I gather you're looking for an usable aspect ratio integer:integer solution like 16:9 rather than a float:1 solution like 1.77778:1.
If so, what you need to do is find the greatest common divisor (GCD) and divide both values by that. The GCD i...
Calculate distance between 2 GPS coordinates
...Radians(degrees) {
return degrees * Math.PI / 180;
}
function distanceInKmBetweenEarthCoordinates(lat1, lon1, lat2, lon2) {
var earthRadiusKm = 6371;
var dLat = degreesToRadians(lat2-lat1);
var dLon = degreesToRadians(lon2-lon1);
lat1 = degreesToRadians(lat1);
lat2 = degreesToRadians(...
Why is null an object and what's the difference between null and undefined?
...ndefined)
You: What is name? (*)
JavaScript: name? What's a name? I don't know what you're talking about. You haven't ever mentioned any name before. Are you seeing some other scripting language on the (client-)side?
name = null;
You: What is name?
JavaScript: I don't know.
In short; undefined is ...
Replace a value if null or undefined in JavaScript
...have a requirement to apply the ?? C# operator to JavaScript and I don't know how.
Consider this in C#:
5 Answers
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Colspan all columns
... all TDs in any of the above browsers.
Maybe not recommended as proper markup practice, but if you give a higher colspan value than the total possible no. of columns in other rows, then the TD would span all the columns.
This does NOT work when the table-layout CSS property is set to fixed.
Once...
How to include a quote in a raw Python string
...e single quotes as the delimiter instead:
r'what"ever'
If you need both kinds of quotes in your string, use a triple-quoted string:
r"""what"ev'er"""
If you want to include both kinds of triple-quoted strings in your string (an extremely unlikely case), you can't do it, and you'll have to use ...
Max parallel http connections in a browser?
... suspended connections to an HTTP server (comet, reverse ajax, etc). It works ok, but I see the browser only allows two suspended connections to a given domain simultaneously. So if a user is looking at my website in Tab1 of their browser, then also tries loading it in Tab2, they've used up the two ...
How do I upgrade my ruby 1.9.2-p0 to the latest patch level using rvm?
...irst of all, update your RVM installation by running rvm get stable.
To make sure you're running the new RVM version, you'll then need to run rvm reload (or just open a new terminal).
Once that's done, you can ask RVM to list the ruby versions available to install by running rvm list known.
In th...