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Catch multiple exceptions in one line (except block)
...the exception from the variable with a comma will still work in Python 2.6 and 2.7, but is now deprecated and does not work in Python 3; now you should be using as.
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Using “Object.create” instead of “new”
...xist, if you call again this method on an existing object instance, the id and name properties will change.
Object.create lets you initialize object properties using its second argument, e.g.:
var userB = {
sayHello: function() {
console.log('Hello '+ this.name);
}
};
var bob = Object.cre...
What is a lambda (function)?
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Lambda comes from the Lambda Calculus and refers to anonymous functions in programming.
Why is this cool? It allows you to write quick throw away functions without naming them. It also provides a nice way to write closures. With that power you can do things like...
Amazon S3 direct file upload from client browser - private key disclosure
...time one of your users wants to upload a file, you would create the POLICY and SIGNATURE on your server. You return the page to the user's browser. The user can then upload a file directly to S3 without going through your server.
When you sign the policy, you typically make the policy expire after ...
How to store decimal values in SQL Server?
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That gives you a total of 18 digits, 4 of which after the decimal point (and 14 before the decimal point).
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How do I “commit” changes in a git submodule? [duplicate]
I have, in my naivety, set up a git submodule and treated it like a Subversion external - i.e. it's now full of changes that I've just realized haven't been committed or pushed anywhere.
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Generate list of all possible permutations of a string
...about generating a list of all possible permutations of a string between x and y characters in length, containing a variable list of characters.
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Does Foreign Key improve query performance?
Suppose I have 2 tables, Products and ProductCategories. Both tables have relationship on CategoryId. And this is the query.
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Does JavaScript have a method like “range()” to generate a range within the supplied bounds?
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console.log([...Array(5).keys()]);
(ES6 credit to nils petersohn and other commenters)
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High Quality Image Scaling Library [closed]
...'s a nicely commented Image Manipulation helper class that you can look at and use. I wrote it as an example of how to perform certain image manipulation tasks in C#. You'll be interested in the ResizeImage function that takes a System.Drawing.Image, the width and the height as the arguments.
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