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How to convert a PNG image to a SVG? [closed]
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There are some people who are downvoting this from time to time without any justifiable cause and I'm beginning to form the opinion that it is malicious. If there really is a reason - no problem, stop being lazy and add some value to this community by providing it.
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Better to 'try' something and catch the exception or test if it's possible first to avoid an excepti
...all, constructing exceptions (including their associated tracebacks) takes time.
Exceptions should be used for:
things that are unexpected, or...
things where you need to jump more than one level of logic (e.g. where a break doesn't get you far enough), or...
things where you don't know exactly w...
C++ Convert string (or char*) to wstring (or wchar_t*)
...ar is configured as unsigned. If the type char is signed (which is most of time the case), characters > 127 will give wrong results.
– huyc
May 16 '16 at 18:32
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Difference between classification and clustering in data mining? [closed]
...ruits and your task is to arrange the same type fruits at one place.
This time you don't know any thing about that fruits, you are first time seeing these fruits so how will you arrange the same type of fruits.
What you will do first is you take on the fruit and you will select any physical cha...
MySQL select 10 random rows from 600K rows fast
... different random rows? Do you have to set limit to 10 and then iterate 10 times with mysqli_fetch_assoc($result) ? Or are those 10 results not necessarily distinguishable?
– Adam
Feb 19 '14 at 23:57
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How do I Geocode 20 addresses without receiving an OVER_QUERY_LIMIT response?
...r v3, if I try to geocode 20 addresses, I get an OVER_QUERY_LIMIT unless I time them to be ~1 second apart, but then it takes 20 seconds before my markers are all placed.
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Can Python test the membership of multiple values in a list?
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True
>>> {'a', 'b'} <= {'a', 'b', 'foo', 'bar'}
True
...sometimes:
>>> {'a', ['b']} <= {'a', ['b'], 'foo', 'bar'}
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: unhashable type: 'list'
Sets can only be created with hashab...
Is it possible dynamically to add String to String.xml in Android?
...olders in string values in string.xml that can be assigned values at run time?
13 Answers
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List comprehension vs map
...y speed advantage of map when using exactly the same function:
$ python -mtimeit -s'xs=range(10)' 'map(hex, xs)'
100000 loops, best of 3: 4.86 usec per loop
$ python -mtimeit -s'xs=range(10)' '[hex(x) for x in xs]'
100000 loops, best of 3: 5.58 usec per loop
An example of how performance comparis...
Printing Java Collections Nicely (toString Doesn't Return Pretty Output)
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@Boosha it also takes O(n) time to convert the stack to a string and O(n) time to print the string to the console
– Zach Langley
May 29 '15 at 15:27
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