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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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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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Why do I get “a label can only be part of a statement and a declaration is not a statement” if I hav
...is is by inserting an empty statement after your label, which relieves you from keeping track of the scope the way you would need to inside a block.
#include <stdio.h>
int main ()
{
printf("Hello ");
goto Cleanup;
Cleanup: ; //This is an empty statement.
char *str = "World\n";
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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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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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Comet and jQuery [closed]
... the answer to those questions, is there any documentation on this pattern from an implementation stand-point?
8 Answers
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CoffeeScript, When to use fat arrow (=>) over arrow (->) and vice versa
... What do you do when you want to use the this that would be called from the thin arrow, but also the instance variables that you would get with the fat arrow?
– Andrew Mao
Sep 21 '12 at 23:43
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Is gcc 4.8 or earlier buggy about regular expressions?
...on to enable it. But that ship sailed long ago. There are exported symbols from the libstdc++.so library that depend on the regex code, so simply removing it (in, say, GCC 4.8) would not have been trivial.
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Python Logging (function name, file name, line number) using a single file
...ywhere you want, just add:
logger.debug('your message')
Example output from a script I'm working on right now:
[invRegex.py:150 - handleRange() ] ['[A-Z]']
[invRegex.py:155 - handleRepetition() ] [[<__main__.CharacterRangeEmitter object at 0x10ba03050>, '{', '1', '}']]
[invRe...
slf4j: how to log formatted message, object array, exception
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