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How to initialize a two-dimensional array in Python?
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A pattern that often came up in Python was
bar = []
for item in some_iterable:
bar.append(SOME EXPRESSION)
which helped motivate the introduction of list comprehensions, which convert that snippet to
bar = [SOME EXPRESSION for item in some_iterable]
which is shorter and sometimes cle...
十年磨一“饼” 一个70后连续创业者的心路历程 - 资讯 - 清泛网 - 专注C/C+...
...科技手段整合内部和外部相关资源持续迭代优化、高效地连接用户并增强消费体验。而当下过分吹捧的互联网营销我倒觉得是把双刃剑，如果你的产品没有足够过硬，那就是过早的透支了流量。
我们学互联网思维：产品要专注...
Truncate number to two decimal places without rounding
...h that javascript would represent in scientific notation. toFixed(0.0000000052, 2) yields '5.2'. This can be fixed by using return num.toFixed(fixed+1).match(re)[0]; Notice I'm using toFixed with one decimal place above the target to avoid rounding, then running your regex match
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Emulate ggplot2 default color palette
...e 0 == 360
– hadley
Nov 20 '11 at 6:05
add a comment
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Create nice column output in python
...width of 20.
– intuited
May 5 at 22:05
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How do I inspect the view hierarchy in iOS?
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I've got: error: cannot find interface declaration for '$__lldb_objc_class' any ideas? (lldb) po [[UIWindow keyWindow] recursiveDescription] error: cannot find interface declaration for '$__lldb_objc_class' error: cannot find interf...
Listing only directories in UNIX
I want to list only the directories in specified path ( ls doesn't have such option).
Also, can this be done with a single line command?
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How to printf “unsigned long” in C?
I can never understand how to print unsigned long datatype in C.
8 Answers
8
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Disable a Button
...t sets the sender to Any instead of AnyObject but both still work.... What error are you getting?
– Krivvenz
Feb 5 '19 at 14:08
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python: How do I know what type of exception occurred?
...an explanation. Basically, it's so that you don't hide:
the fact that an error occurred
the specifics of the error that occurred (error hiding antipattern)
So as long as you take care to do none of those things, it's OK to catch the generic exception. For instance, you could provide information...