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How to migrate back from initial migration in Django 1.7?
I created a new app with some models and now I noticed that some of the models are poorly thought out. As I haven't committed the code the sensible thing would be to migrate the database to last good state and redo the migration with better models. In this case the last good state is database where ...
Does Ruby regular expression have a not match operator like “!~” in Perl?
I just want to know whether ruby regex has a not match operator just like !~ in perl. I feel it's inconvenient to use (?!xxx) or (?<!xxxx) because you cannot use regex patterns in the xxx part.
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Convert a matrix to a 1 dimensional array
I have a matrix (32X48).
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Convert stdClass object to array in PHP
I fetch post_id from postmeta as:
13 Answers
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SQL function as default parameter value?
I tried changing a default parameter value with this:
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git ignore all files of a certain type, except those in a specific subfolder
I have a directory structure like this:
1 Answer
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How to get current date & time in MySQL?
Is there a value or command like DATETIME that I can use in a manual query to insert the current date and time?
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Why does Go have a “goto” statement
I was surprised to find that Go has a 'goto' statement. I've always been taught that 'goto' statements are a thing of the past and evil for it occludes the actual flow of a program, and that functions or methods are always a better way of controlling flow.
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What Does Question Mark Mean in Xcode Project Navigator?
In the project navigator in Xcode, I am not sure what the ? is trying to tell me next to the file name.
7 Answers
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Set default CRAN mirror permanent in R
How can I set a specific CRAN mirror permanently in R?
1 Answer
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