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What is the python keyword “with” used for? [duplicate]
...ources (like file streams). It is similar to the using statement in VB.NET and C#. It allows you to ensure that a resource is "cleaned up" when the code that uses it finishes running, even if exceptions are thrown. It provides 'syntactic sugar' for try/finally blocks.
From Python Docs:
The with sta...
postgresql list and order tables by size
How can I list all the tables of a PostgreSQL database and order them by size ?
7 Answers
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Generate full SQL script from EF 5 Code First Migrations
...ow on earth did you discover that 0 works when the parameter is normally a string?!
– Dave R
Mar 10 '14 at 16:33
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How do I ignore files in a directory in Git?
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This is actually a copy-paste from the git documentation
– mcont
Aug 17 '18 at 10:00
1
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static linking only some libraries
How can I statically link only a some specific libraries to my binary when linking with GCC?
8 Answers
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How can I apply a function to every row/column of a matrix in MATLAB?
...umns if there's only one row, or higher dimensions if the lower dimensions all have size==1). However, bsxfun works for any function, including (and especially) user-defined functions.
For example, let's say you have a matrix A and a row vector B. E.g., let's say:
A = [1 2 3;
4 5 6;
7 8 ...
Initializing a list to a known number of elements in Python [duplicate]
...st thing that comes to mind for me is:
verts = [None]*1000
But do you really need to preinitialize it?
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How to Create Multiple Where Clause Query Using Laravel Eloquent?
... '<>', 'value_2'],
[COLUMN, OPERATOR, VALUE],
...
])
Personally I haven't found use-case for this over just multiple where calls, but fact is you can use it.
Since June 2014 you can pass an array to where
As long as you want all the wheres use and operator, you can group them this ...
“Auto Layout still required after executing -layoutSubviews” with UITableViewCell subclass
...
I encountered the same problem while manually adding constraints in code. In code, I was doing the following:
{
[self setTranslatesAutoresizingMaskIntoConstraints:YES];
[self addSubview:someView];
[self addSubview:someOtherView];
[self addConstraint...
How do you remove duplicates from a list whilst preserving order?
...n seen or seen_add(x))]
Why assign seen.add to seen_add instead of just calling seen.add? Python is a dynamic language, and resolving seen.add each iteration is more costly than resolving a local variable. seen.add could have changed between iterations, and the runtime isn't smart enough to rule t...