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lexers vs parsers
...at parsers and lexers have in common:
They read symbols of some alphabet from their input.
Hint: The alphabet doesn't necessarily have to be of letters. But it
has to be of symbols which are atomic for the language
understood by parser/lexer.
Symbols for the lexer: ASCII characters.
Symbols for ...
How does mockito when() invocation work?
...lt, the CgLibMockMaker class is used.
CgLibMockMaker uses a class borrowed from JMock, ClassImposterizer that handles creating the mock. The key pieces of the 'mockito magic' used are the MethodInterceptor used to create the mock: the mockito MethodInterceptorFilter, and a chain of MockHandler inst...
What is __stdcall?
...l them you must conform to them. Any calls to Windows APIs, and callbacks from Windows APIs, must use the __stdcall convention.
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How to use a dot “.” to access members of dictionary?
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Note that this will behave differently from common expectations in that it won't raise AttributeError if the attribute does not exist. Instead it will return None.
– mic_e
Aug 1 '16 at 10:45
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How can I remove the first line of a text file using bash/sed script?
I need to repeatedly remove the first line from a huge text file using a bash script.
16 Answers
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What is an existential type?
...ytecode type is, but it doesn't need to; all it does is relay the bytecode from VirtualMachine.compile to VirtualMachine.run.
Java type wildcards (ex: List<?>) are a very limited form of existential types.
Update: Forgot to mention that you can sort of simulate existential types with univers...
How to convert unix timestamp to calendar date moment.js
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UNIX timestamp it is count of seconds from 1970, so you need to convert it to JS Date object:
var date = new Date(unixTimestamp*1000);
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Explanation of BASE terminology
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Unscientifically, but from my observations, when talking about Web Services, ACID is most often associated with SOAP and BASE is more closely affiliated with REST (RESTful) services. And for a more fine-pointed discussion about Eventual consistenc...
Passing by reference in C
...type is less powerful but considered safer than the pointer type inherited from C. This would be your example, adapted to use C++ references:
void f(int &j) {
j++;
}
int main() {
int i = 20;
f(i);
printf("i = %d\n", i);
return 0;
}
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How do you write a migration to rename an ActiveRecord model and its table in Rails?
...e caveats:
Let's use a real-world example I faced today: renaming a model from 'Merchant' to 'Business.'
Don't forget to change the names of dependent tables and models in
the same migration. I changed my Merchant and MerchantStat models to Business and BusinessStat at the same time. Otherwise I'...