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Base64: What is the worst possible increase in space usage?
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From Wikipedia
Note that given an input of n bytes,
the output will be (n + 2 - ((n + 2) %
3)) / 3 * 4 bytes long, so that the
number of output bytes per input byte
converges to 4 / 3 or 1.33333 for
large n.
S...
How to properly assert that an exception gets raised in pytest?
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Note that e_info saves the exception object so you can extract details from it. For example, if you want to check the exception call stack or another nested exception inside.
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git working on two branches simultaneously
...llows having different
branches in different working directories but all from the same
repository.
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What is “(program)” in Chrome debugger’s profiler?
... the root of the tree calling all other code...it's there because the jump from native code to JavaScript, resource loading, etc. has to start somewhere :)
You can see examples of the treeview in the Chrome developer tool docs.
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sass --watch with automatic minify?
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Java current machine name and logged in user?
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Difference between viewDidLoad and viewDidAppear
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When should I mock?
...ying to test some logic in your unit of code but you need to get something from another object and what is returned from this dependency might affect what you are trying to test - mock that object.
A great podcast on the topic can be found here
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Rails migrations: Undo default setting for a column
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Rails 5+
def change
change_column_default( :table_name, :column_name, from: nil, to: false )
end
Rails 3 and Rails 4
def up
change_column_default( :table_name, :column_name, nil )
end
def down
change_column_default( :table_name, :column_name, false )
end
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Scala: What is a TypeTag and how do I use it?
... and WeakTypeTag see this question: Scala Macros: “cannot create TypeTag from a type T having unresolved type parameters”
The official documentation site of Scala also contains a guide for Reflection.
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