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How can I check file size in Python?
...something based on the file size. For example, if the size is greater than 0, I will send an email to somebody, otherwise continue to other things.
...
Python: try statement in a single line
...iables to something. If they might not get set, set them to None first (or 0 or '' or something if it is more applicable.)
If you do assign all the names you are interested in first, you do have options.
The best option is an if statement.
c = None
b = [1, 2]
if c is None:
a = b
else:
...
How to set default value to the input[type=“date”] [duplicate]
...he format YYYY-MM-DD. Single digit days and months should be padded with a 0. January is 01.
From the documentation:
A string representing a date.
Value: A valid full-date as defined in [RFC 3339], with the additional qualification that the year component is four or more digits representin...
How to get names of classes inside a jar file?
.../', '.'); // including ".class"
classNames.add(className.substring(0, className.length() - ".class".length()));
}
}
Option (b): Using specialized reflections libraries
Guava
Guava has had ClassPath since at least 14.0, which I have used and liked. One nice thing about ClassPath is th...
JavaScript query string [closed]
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answered Mar 15 '09 at 5:33
Shadow2531Shadow2531
11.1k55 gold badges2828 silver badges3838 bronze badges
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Detect Safari browser
...
110
You can easily use index of Chrome to filter out Chrome:
var ua = navigator.userAgent.toLowerCa...
iOS 5 fixed positioning and virtual keyboard
...k Retallack
16.7k1616 gold badges8484 silver badges109109 bronze badges
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What is the difference between instanceof and Class.isAssignableFrom(…)?
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506
When using instanceof, you need to know the class of B at compile time. When using isAssignabl...
JavaScript variables declare outside or inside loop?
...u've got yourself an accidental global.
In particular:
for (var i; i<100; i++)
do something;
for (var i; i<100; i++)
do something else;
Crockford will recommend you remove the second var (or remove both vars and do var i; above), and jslint will whinge at you for this. But IMO it'...
Remove all occurrences of a value from a list?
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answered Jul 21 '09 at 3:28
Mark RushakoffMark Rushakoff
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