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Detect all changes to a (immediately) using JQuery
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For everyone's reference, input is the HTML5 event that I believe should cover all modern browsers (MDN reference). keyup should catch the rest, though with a slight delay (input is triggered on key down). propertychange is a proprietary MS event, and I'm not sure...
Testing modules in rspec
... @lulalala No, it's a super class: ruby-doc.org/core-2.0.0/Class.html#method-c-new To test modules do something like this: let(:dummy_class) { Class.new { include ModuleToBeTested } }
– Timo
Oct 21 '13 at 7:24
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Iterate a list as pair (current, next) in Python
...ented in funcy module: funcy.pairwise: funcy.readthedocs.io/en/stable/seqs.html#pairwise
– ADR
Jan 13 '18 at 13:50
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Remove all the elements that occur in one list from another
... most optimized method too.
See:
http://docs.python.org/library/stdtypes.html#set
http://docs.python.org/library/sets.htm (for older python)
# Using Python 2.7 set literal format.
# Otherwise, use: l1 = set([1,2,6,8])
#
l1 = {1,2,6,8}
l2 = {2,3,5,8}
l3 = l1 - l2
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Can you use a trailing comma in a JSON object?
...d about, and some parsers did support it (http://bolinfest.com/essays/json.html, http://whereswalden.com/2010/09/08/spidermonkey-json-change-trailing-commas-no-longer-accepted/), but it's the spec fact (as shown on http://json.org/) that it shouldn't work in JSON. That thing said...
... I'm wonderi...
Garbage collector in Android
...ttp://voices.yahoo.com/android-virtual-machine-vm-out-memory-error-7342266.html?cat=59
NOTE: Due to the momentary "pause" caused by performing gc, it is not recommended to do this before each bitmap allocation.
Optimum design is:
Free all bitmaps that are no longer needed, by the if / recycle ...
How do I get the coordinates of a mouse click on a canvas element?
...canvasY = event.pageY - totalOffsetY;
return {x:canvasX, y:canvasY}
}
HTMLCanvasElement.prototype.relMouseCoords = relMouseCoords;
The last line makes things convenient for getting the mouse coordinates relative to a canvas element. All that's needed to get the useful coordinates is
coords =...
How to concatenate strings of a string field in a PostgreSQL 'group by' query?
...mat it as a list:
http://www.postgresql.org/docs/current/static/xaggr.html
I'd link to the 8.4 development docs but they don't seem to list this feature yet.
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TypeScript static classes
... It might be useful to include that you'll need to include the .js in your html. So for Angular 2 you're probably using System... so'd do System.import("Folder/M"); (or whatever the path is to the compiled .js file) before the bootstrap import
– Serj Sagan
Jan ...
TypeError: 'str' does not support the buffer interface
... something to do with the changes in 3.2: docs.python.org/dev/whatsnew/3.2.html#gzip-and-zipfile
– Skurmedel
Mar 29 '11 at 11:15
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