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How do you create nested dict in Python?
...split(',')
# check to make sure this key should be mapped.
if cols[0] not in keys:
continue
# add key to dict
d[cols[0]] = dict(
# inner keys are the header names, values are columns
(headers[idx], v) for idx, v in enumerate(cols[1:...
How to break a line of chained methods in Python?
...all the .filter calls is that if you change subkeyword to sub_keyword, you now have to fix the indentation of every single line just because you changed the variable name. Not good when style actually hinders maintainability...
– kevlarr
Oct 12 '17 at 15:45
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Is there a way to delete a line in Visual Studio without cutting it?
...n on the right (otherwise it won't be applied).
Finally > OK.
You can now open a .CPP file and use your shortcut to remove a line.
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Developing C# on Linux
I'd like to know if there are effective and open source tools to develop C# applications on Linux (Ubuntu). In particular, I have to develop Windows Forms applications.
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mongodb/mongoose findMany - find all documents with IDs listed in array
...rray? Documents are not guaranteed to come out in any order unless you specify a sort. What if you want them sorted in the same order you list them in the array (e.g. ...000c, ...000d, ...000e)?
– Kevin
Mar 30 '14 at 23:34
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How do you round to 1 decimal place in Javascript?
...12.3456789
var rounded = Math.round(number * 10) / 10
// rounded is 12.3
if you want it to have one decimal place, even when that would be a 0, then add...
var fixed = rounded.toFixed(1)
// fixed is always to 1 d.p.
// NOTE: .toFixed() returns a string!
// To convert back to number format
parseF...
The most accurate way to check JS object's type?
...
The JavaScript specification gives exactly one proper way to determine the class of an object:
Object.prototype.toString.call(t);
http://bonsaiden.github.com/JavaScript-Garden/#types
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NullPointerException in Java with no StackTrace
...
There are no hidden gotchas that I know of. When you look at the Hotspot source code, you can see that this option is only used in one place (graphKit.cpp). And that looks fine to me.
– Roland Illig
Jun 13 '10 at 11:14
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What does “pending” mean for request in Chrome Developer Window?
...solution I found:
player[0].setAttribute('src','video.webm?dummy=' + Date.now());
You just add a dummy query string to the end of each url. This forces Chrome to download the file again.
Another example with popcorn player (using jquery) :
url = $(this).find('.url_song').attr('url');
pop = Popc...
detect key press in python?
I am making a stopwatch type program in python and I would like to know how to detect if a key is pressed (such as p for pause and s for stop), and I would not like it to be something like raw_input that waits for the user's input before continuing execution. Anyone know how to do this in a while lo...