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Why does this iterative list-growing code give IndexError: list assignment index out of range?
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j is an empty list, but you're attempting to write to element [0] in the first iteration, which doesn't exist yet.
Try the following instead, to add a new element to the end of the list:
for l in i:
j.append(l)
Of course, you'd never do this in practice if all you wanted to do wa...
How to pattern match using regular expression in Scala?
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edited Aug 10 '15 at 16:11
r0estir0bbe
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Painless way to install a new version of R?
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answered Oct 20 '10 at 11:16
Joris MeysJoris Meys
95k2626 gold badges196196 silver badges254254 bronze badges
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Android Fragments and animation
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390
To animate the transition between fragments, or to animate the process of showing or hiding a fr...
Converting int to bytes in Python 3
...s on an iterable instead of a single integer:
>>> bytes([3])
b'\x03'
The docs state this, as well as the docstring for bytes:
>>> help(bytes)
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bytes(int) -> bytes object of size given by the parameter initialized with null bytes
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Tool to read and display Java .class versions
...s.java"
public class MyClass
SourceFile: "MyClass.java"
minor version: 0
major version: 46
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To only show the version:
WINDOWS> javap -verbose MyClass | find "version"
LINUX > javap -verbose MyClass | grep version
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Is using Random and OrderBy a good shuffle algorithm?
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209
It's not a way of shuffling that I like, mostly on the grounds that it's O(n log n) for no good...
Insert a line at specific line number with sed or awk
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edited Nov 9 '14 at 0:18
answered Jun 30 '11 at 15:54
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Method Resolution Order (MRO) in new-style classes?
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answered Dec 4 '09 at 18:03
Alex MartelliAlex Martelli
725k148148 gold badges11261126 silver badges13241324 bronze badges
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汇编语言超浓缩教程（汇编入门必备） - C/C++ - 清泛网 - 专注C/C++及内核技术
...不相同。个人电脑由1981年推出至今，其CPU发展过程为：8086→80286→80386→80486→PENTIUM →……，还有AMD、CYRIX等旁支。后面兼容前面CPU的功能，只不过多了些指令（如多能奔腾的MMX指令集）、增大了寄存器（如386的32位E...