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Possible to make labels appear when hovering over a point in matplotlib?
I am using matplotlib to make scatter plots. Each point on the scatter plot is associated with a named object. I would like to be able to see the name of an object when I hover my cursor over the point on the scatter plot associated with that object. In particular, it would be nice to be able to qui...
Writing a compiler in its own language
...tuitively, it would seems that a compiler for language Foo cannot itself be written in Foo. More specifically, the first compiler for language Foo cannot be written in Foo, but any subsequent compiler could be written for Foo .
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Replace a value if null or undefined in JavaScript
...|| 10; //j is now 10
Note that the logical operator || does not return a boolean value but the first value that can be converted to true.
Additionally use an array of objects instead of one single object:
var options = {
filters: [
{
name: 'firstName',
value: ...
How can I convert immutable.Map to mutable.Map in Scala?
How can I convert immutable.Map to mutable.Map in Scala so I can update the values in Map ?
5 Answers
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Equals(=) vs. LIKE
When using SQL, are there any benefits of using = in a WHERE clause instead of LIKE ?
15 Answers
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How to inherit from a class in javascript?
..., I try to avoid using constructor functions and their prototype property, but my old answer from 2010 is still at the bottom. I now prefer Object.create(). Object.create is available in all modern browsers.
I should note that Object.create is usually much slower than using new with a function con...
External template in Underscore
I use Underscore template . It is possible to attach a external file as template ?
12 Answers
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Pointers vs. values in parameters and return values
In Go there are various ways to return a struct value or slice thereof. For individual ones I've seen:
4 Answers
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What does yield mean in PHP?
I've recently stumbled over this code:
8 Answers
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How does this JavaScript/jQuery syntax work: (function( window, undefined ) { })(window)?
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The undefined is a normal variable and can be changed simply with undefined = "new value";. So jQuery creates a local "undefined" variable that is REALLY undefined.
The window variable is made local for performance reasons. Because when JavaScript looks u...