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C# convert int to string with padding zeros?
... '0') - okay, but doesn't work for negative numbers
i.ToString("0000"); - explicit form
i.ToString("D4"); - short form format specifier
$"{i:0000}"; - string interpolation (C# 6.0+)
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How to test if a dictionary contains a specific key? [duplicate]
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'a' in x
and a quick search reveals some nice information about it: http://docs.python.org/3/tutorial/datastructures.html#dictionaries
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How to convert list to string [duplicate]
...(might be useful for long-string lists): print ("\n".join(['I', 'would', 'expect', 'multiple', 'lines']))
– Honeybear
Mar 3 '18 at 11:55
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Unpacking a list / tuple of pairs into two lists / tuples [duplicate]
...mportant in some cases (e.g. append to it). So the list1 and list2 in the example should really be tuple1 and tuple2.
– Causality
Feb 29 '16 at 20:40
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How to run a process with a timeout in Bash? [duplicate]
Is there a way to write a shell script that would execute a certain command for 15 seconds, then kill the command?
2 Answer...
How to put labels over geom_bar for each bar in R with ggplot2
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Try this:
ggplot(data=dat, aes(x=Types, y=Number, fill=sample)) +
geom_bar(position = 'dodge', stat='identity') +
geom_text(aes(label=Number), position=position_dodge(width=0.9), vjust=-0.25)
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Specialization with Constraints
...ng GHC to specialize a function with a class constraint. I have a minimal example of my problem here: Foo.hs and Main.hs . The two files compile (GHC 7.6.2, ghc -O3 Main ) and run.
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numpy matrix vector multiplication [duplicate]
When I multiply two numpy arrays of sizes (n x n)*(n x 1), I get a matrix of size (n x n). Following normal matrix multiplication rules, a (n x 1) vector is expected, but I simply cannot find any information about how this is done in Python's Numpy module.
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Insert at first position of a list in Python [closed]
How can I insert an element at the first index of a list ?
If I use list.insert(0,elem), do elem modify the content of the first index?
Or do I have to create a new list with the first elem and then copy the old list inside this new one?
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linux ls、ll命令详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
linux ls、ll命令详解ls只是简单的列出目录下文件名，ll更加详细的列出了文件的类型、文件所有者权限、文件所有者组权限、文件大小、文件最后修改时间。ls只是简单的列出目录下文件名，ll更加详细的列出了文件的类型、文件...