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How can I extract a predetermined range of lines from a text file on Unix?
I have a ~23000 line SQL dump containing several databases worth of data. I need to extract a certain section of this file (i.e. the data for a single database) and place it in a new file. I know both the start and end line numbers of the data that I want.
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How to run a JAR file
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You need to specify a Main-Class in the jar file manifest.
Oracle's tutorial contains a compl...
AngularJS : Differences among = & @ in directive scope? [duplicate]
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2 Answers
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What is the meaning of polyfills in HTML5?
...port CSS3 techniques you want).
Here's a good post:
http://remysharp.com/2010/10/08/what-is-a-polyfill/
Here's a comprehensive list of Polyfills and Shims:
https://github.com/Modernizr/Modernizr/wiki/HTML5-Cross-browser-Polyfills
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Declaration/definition of variables locations in ObjectiveC?
...d properties can be declared.
Before "modern" Objective-C (in "old" Obj-C 2.0) you didn't have a lot of choices. Instance variables used to be declared in the header between the curly brackets { }:
// MyClass.h
@interface MyClass : NSObject {
int myVar;
}
@end
You were able to access these v...
browser sessionStorage. share between tabs?
...upport as well. :)
Credit goes to this full article:
http://blog.guya.net/2015/06/12/sharing-sessionstorage-between-tabs-for-secure-multi-tab-authentication/
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Android Studio: Where is the Compiler Error Output Window?
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edited Jul 27 '18 at 9:28
answered Jun 1 '13 at 20:32
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How to Turn Off Showing Whitespace Characters in Visual Studio IDE
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edited Sep 27 '17 at 22:34
Mwiza
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Check if a string matches a regex in Bash script
...amp; echo "yes"
Or more a accurate test:
[[ $date =~ ^[0-9]{4}(0[1-9]|1[0-2])(0[1-9]|[1-2][0-9]|3[0-1])$ ]] && echo "yes"
# |^^^^^^^^ ^^^^^^ ^^^^^^ ^^^^^^ ^^^^^^^^^^ ^^^^^^ |
# | | ^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^ |
# | | | ...
__lt__ instead of __cmp__
Python 2.x has two ways to overload comparison operators, __cmp__ or the "rich comparison operators" such as __lt__ . The rich comparison overloads are said to be preferred, but why is this so?
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