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sometimes my file just freezes in my vi |vim, what happened?
Sometimes when I edit my file using vi or vim, my file just freezes. Even if I type Ctrl+C or Ctrl+D , it still freezes there. I kill -9 <pid> from another terminal, the pid is killed, but the file still freezes there.
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form_for but to post to a different action
I want to have a form_for @user , but post to a custom action in the users controller.
6 Answers
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Difference Between Invoke and DynamicInvoke
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When you have a delegate instance, you might know the exact type, or you might just know that it is a Delegate. If you know the exact type, you can use Invoke, which is very fast - everything is already pre-validated. For example:
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difference between css height : 100% vs height : auto
I was asked a question in an interview that "what is the difference between the css height:100% and height:auto ?"
4 An...
Flask-SQLAlchemy how to delete all rows in a single table
How do I delete all rows in a single table using Flask-SQLAlchemy?
3 Answers
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What is string_view?
string_view was a proposed feature within the C++ Library Fundamentals TS( N3921 ) added to C++17
1 Answer
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What is the Objective-C equivalent for “toString()”, for use with NSLog?
Is there a method that I can override in my custom classes so that when
5 Answers
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UILabel - Wordwrap text
... needed? I have the line breaks set to word wrap and the label is tall enough for two lines, but it appears that it will only wrap on line breaks. Do I have to add line breaks to make it wrap properly? I just want it to wrap if it can't fit it in horizontally.
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jQuery: checking if the value of a field is null (empty)
Is this a good way to check if the value of a field is null ?
7 Answers
7
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grepping using the “|” alternative operator
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You need to escape the |. The following should do the job.
grep "gene\|exon" AT5G60410.gff
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