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Removing duplicate objects with Underscore for Javascript
...ses a deep object comparison to check for duplicates (without resorting to converting to JSON, which is inefficient and hacky)
var newArr = _.filter(oldArr, function (element, index) {
// tests if the element has a duplicate in the rest of the array
for(index += 1; index < oldArr.length;...
View/edit ID3 data for MP3 files
...:
http://sourceforge.net/projects/mpg123net/
Included are the samples to convert mp3 file to PCM, and read ID3 tags.
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One or more types required to compile a dynamic expression cannot be found. Are you missing referenc
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On your solution explorer window, right click to References, select Add Reference, go to .NET tab, find and add Microsoft.CSharp.
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AngularJS and its use of Dollar Variables
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Downvote converted to an up-. Assuming you're right, this is now a useful answer!
– David Rivers
May 6 '13 at 16:09
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How to get the Power of some Integer in Swift language?
... This is a completely valid answer. There are some instances where converting Ints to Doubles loses precision, and so that is not a viable solution for Int pow. Just try running Double(Int.max - 1) < Double(Int.max) in a Swift 3 REPL and you may be surprised.
– mklbt...
Fastest method to replace all instances of a character in a string [duplicate]
...nces of foo with bar in the string str. If you just have a string, you can convert it to a RegExp object like this:
var pattern = "foobar",
re = new RegExp(pattern, "g");
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What is the purpose of a question mark after a type (for example: int? myVariable)?
... allowed. return value ? value : "isNull"; tells me that string value isnt convertable into bool.
– C4d
Sep 7 '15 at 13:20
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Storing time-series data, relational or non?
...evation.
Correction
It is not "filtering out the un-needed data"; it is selecting only the needed data. Yes, of course, if you have an Index to support the columns identified in the WHERE clause, it is very fast, and the query does not depend on the size of the table (grabbing 1,000 rows from a ...
How To Save Canvas As An Image With canvas.toDataURL()?
... create a dummy HTML anchor, and download the image from there like...
// Convert canvas to image
document.getElementById('btn-download').addEventListener("click", function(e) {
var canvas = document.querySelector('#my-canvas');
var dataURL = canvas.toDataURL("image/jpeg", 1.0);
downl...
Get list from pandas DataFrame column headers
...pears, again
cols
# ['A', 'B', 'C']
... if you're the kind of person who converts coffee to typing sounds, well, this is going consume your coffee more efficiently ;)
P.S.: if performance is important, you will want to ditch the
solutions above in favour of
df.columns.to_numpy().tolist()
# ...