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count(*) vs count(column-name) - which is more correct? [duplicate]
... the indexing of the table in question, it can be quicker to get the count from the index instead of going to table for the data. Thus you probably should specify the field name, instead of using *.
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How to print a linebreak in a python function?
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@user3527975, I mean backwards in the sense of reversed from how it should be.
– Winston Ewert
Mar 1 '16 at 17:52
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What is the method for converting radians to degrees?
...lete circle in radians is 2*pi. A complete circle in degrees is 360. To go from degrees to radians, it's (d/360) * 2*pi, or d*pi/180.
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How to draw a dotted line with css?
... height: 0px; works on Chrome because the borders are separate from the height.
– Ben
Jul 30 '12 at 15:28
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Difference between Big-O and Little-O Notation
...m out, the more f(n) will be dominated by n (it will progressively diverge from it).
g(n) ∈ Θ(n) means: at some point, zooming out will not change how g(n) compare to n (if we remove ticks from the axis you couldn't tell the zoom level).
Finally h(n) ∈ O(n) means that function h can be in eith...
Convert normal date to unix timestamp
...add the toFixed(0) to remove any decimals when dividing by 1000 to convert from milliseconds to seconds.
The .getTime() function returns the timestamp in milliseconds, but true unix timestamps are always in seconds.
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How do I jump out of a foreach loop in C#?
...the return statement will obviously terminate the entire function. Judging from your question you may want to use the return true; statement.
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Http 415 Unsupported Media type error with JSON
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Not sure about the reason but Removing lines charset=utf8 from con.setRequestProperty("Content-Type", "application/json; charset=utf8") resolved the issue.
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Javascript checkbox onChange
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lol, use this from javascript $('#checkbox').attr('checked','checked'); $('#checkbox').click();
– Senad Meškin
Jun 24 '15 at 17:11
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Get the first element of each tuple in a list in Python [duplicate]
...on by some reasons, you can use map and operator.itemgetter:
>>> from operator import itemgetter
>>> rows = [(1, 2), (3, 4), (5, 6)]
>>> map(itemgetter(1), rows)
[2, 4, 6]
>>>
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