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Receiving “fatal: Not a git repository” when attempting to remote add a Git repo
....git folder is gone. Is git init the same as delete the repository folder, and then git clone .... All I need to do is a pull
– Francisco Corrales Morales
May 5 '14 at 21:34
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Why does PostgreSQL perform sequential scan on indexed column?
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If the SELECT returns more than approximately 5-10% of all rows in the table, a sequential scan is much faster than an index scan.
This is because an index scan requires several IO operations for each row (look up the row in the ...
Convert from enum ordinal to enum type
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I implemented this solution and it is not working for me. It returns out the ordinal value is not guaranteed to match the order in which the enumerated types are added. I don't know that is what this answer is advocating, but I wanted to warn people non...
How to scale threads according to CPU cores?
...termined the number of processors available, create that number of threads and split up your work accordingly.
Update: To further clarify, a Thread is just an Object in Java, so you can create it just like you would create any other object. So, let's say that you call the above method and find tha...
Disable XML validation in Eclipse
...ngs (disable the validation for this project): Right-click on the project, select Properties > Validation and uncheck the manual and build for: XML Schema Validator, XML Validator
Right-click on the project and select Validate to make the errors disappear.
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How to determine if a string is a number with C++?
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Also doesn't handle negative numbers and non-whole numbers. We can't know what the requirements are based on the question.
– Brennan Vincent
Jan 11 '11 at 6:24
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Install a Python package into a different directory using pip?
I know the obvious answer is to use virtualenv and virtualenvwrapper, but for various reasons I can't/don't want to do that.
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Rails: How can I set default values in ActiveRecord?
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See Paul Russell's comment on this answer for more details
If you're only selecting a subset of columns for a model (ie; using select in a query like Person.select(:firstname, :lastname).all) you will get a MissingAttributeError if your init method accesses a column that hasn't been included in the...
Can “list_display” in a Django ModelAdmin display attributes of ForeignKey fields?
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@marcelm that’s what select_related is for. the get_queryset() of the UserAdmin will have to be overwritten.
– interDist
Jul 17 '17 at 21:38
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When NOT to call super() method when overriding?
When I make my own Android custom class, I extend its native class. Then when I want to override the base method, I always call super() method, just like I always do in onCreate , onStop , etc.
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