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Sublime Text 2: How to delete blank/empty lines
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Small suggestion use ^(\r|\n\r?) to cover all possible line breaks.
– Haris Krajina
Nov 7 '12 at 9:22
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file_put_contents - failed to open stream: Permission denied
...he server account, but every parent directory of the target directory must allow the server account to navigate into it; I think this would be +x to the permissions.
– Erhannis
Aug 27 '13 at 7:57
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C# short/long/int literal format?
... // uint
var ul = 1UL; // ulong
var l = 1L; // long
I think that's all... there are no literal specifiers for short/ushort/byte/sbyte
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%d,%c,%s,%x等转换符 释义 - C/C++ - 清泛IT论坛，有思想、有深度
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%d 有符号十进制整数
%f 浮点数(包括float和doulbe)
%e(%E) 浮点数指数输出[e-(E-)记数法]
%g(%G) 浮点数不显无意义的零"0"
%i 有符号十进制整数(与%d相同)
%...
Pythonic way to find maximum value and its index in a list?
If I want the maximum value in a list, I can just write max(List) , but what if I also need the index of the maximum value?
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How does std::move() transfer values into RValues?
I just found myself not fully understanding the logic of std::move() .
2 Answers
2
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Delete empty lines using sed
... spaces or tabs in your "empty" line. Use POSIX classes with sed to remove all lines containing only whitespace:
sed '/^[[:space:]]*$/d'
A shorter version that uses ERE, for example with gnu sed:
sed -r '/^\s*$/d'
(Note that sed does NOT support PCRE.)
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read.csv warning 'EOF within quoted string' prevents complete reading of file
...ce and Inductive Confirmation\t" "Sound and Sense in Cath Almaine\t" "Oak Galls Preserved by the Eruption of Mount Vesuvius in A.D. 79_ and Their Probable Use\t" "The Arts Four Thousand Years Ago\t" ...
## $ title : chr "Bruce D. Smith\t" "Tomás Ó Cathasaigh\t" "Hiram G. Larew\t" "\t" ......
Differences between action and actionListener
...just specify exactly that string in the action attribute. Thus, this is totally clumsy:
<h:commandLink value="Go to next page" action="#{bean.goToNextpage}" />
With this senseless method returning a hardcoded string:
public String goToNextpage() {
return "nextpage";
}
Instead, just put t...
John Carmack's Unusual Fast Inverse Square Root (Quake III)
...s derived is something of a mystery.
To quote Gary Tarolli:
Which actually is doing a floating
point computation in integer - it took
a long time to figure out how and why
this works, and I can't remember the
details anymore.
A slightly better constant, developed by an expert mathemat...