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Read first N lines of a file in python
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Better would be to use the nrows option, which can be set to 1000 and the entire file isn't loaded. pandas.pydata.org/pandas-docs/stable/generated/… In general, pandas has this and other memory-saving techniques for big files.
– philshem
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Which characters need to be escaped when using Bash?
...1!s/^/"/; $!s/$/"/'.
2b. More readable version of 2
There's an easy safe set of characters, like [a-zA-Z0-9,._+:@%/-], which can be left unescaped to keep it more readable
I\'m\ a\ s@fe\ \$tring\ which\ ends\ in\ newline"
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sed command: LC_ALL=C sed -e 's/[^a-zA-Z0-9,._+@%/-]/\\&/g; 1{$s/^$...
How can I get a JavaScript stack trace when I throw an exception?
... generate output like this:
DBX.Utils.stackTrace@http://localhost:49573/assets/js/scripts.js:44
DBX.Console.Debug@http://localhost:49573/assets/js/scripts.js:9
.success@http://localhost:49573/:462
x.Callbacks/c@http://localhost:49573/assets/js/jquery-1.10.2.min.js:4
x.Callbacks/p.fireWith@http://lo...
Draw multi-line text to Canvas
...d doesn't know what \n is. What you have to do is strip the \n and then offset the Y to get your text on the next line. So something like this:
canvas.drawText("This is", 100, 100, mTextPaint);
canvas.drawText("multi-line", 100, 150, mTextPaint);
canvas.drawText("text", 100, 200, mTextPaint);
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Counting Line Numbers in Eclipse [closed]
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\n[\s]*
Select whatever file types (*.java, *.xml, etc..) and working sets are appropriate for you.
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What are the differences between NP, NP-Complete and NP-Hard?
... those complexity classes.
P
P is a complexity class that represents the set of all decision problems that can be solved in polynomial time.
That is, given an instance of the problem, the answer yes or no can be decided in polynomial time.
Example
Given a connected graph G, can its vertices be ...
Eclipse RCP开发桌面程序 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...dowConfigurer configurer = getWindowConfigurer();
13 configurer.setInitialSize( new Point( 600 , 450 ));
14 configurer.setShowCoolBar( true );
15 configurer.setShowStatusLine( false );
16 configurer.setTitle( " 第一个RCP程序 " );
17
18 }
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Covariance, Invariance and Contravariance explained in plain English?
... editor after snippets, if snippets enabled
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Writing string to a file on a new line every time
I want to append a newline to my string every time I call file.write() . What's the easiest way to do this in Python?
10 A...
How to escape a JSON string containing newline characters using JavaScript?
I have to form a JSON string in which a value is having new line character. This has to be escaped and then posted using AJAX call. Can any one suggest a way to escape the string with JavaScript. I am not using jQuery.
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