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What is difference between sjlj vs dwarf vs seh?
... I'm using GCC. Everything is great. I can optimize code, it compiles fast and uses not-so-much memory.
2 Answers
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Rails “validates_uniqueness_of” Case Sensitivity
...validates the uniqueness of 'foo' by asking the DB if that name exists yet and the DB says the name doesn't exist yet.
Process B does the same thing and gets the same response
Process A submits the insert statement for the new record and succeeds
If you have a database constraint requiring uniquenes...
What is the difference between '&' and ',' in Java generics?
...you can restrict the type argument (in this case is T ) to extend a class and/or more interfaces with the 'and' operator ( & ) like this:
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SQLAlchemy: how to filter date field?
...our filter is excluding all records: you should change the <= for >= and vice versa:
qry = DBSession.query(User).filter(
and_(User.birthday <= '1988-01-17', User.birthday >= '1985-01-17'))
# or same:
qry = DBSession.query(User).filter(User.birthday <= '1988-01-17').\
...
How can I reference a commit in an issue comment on GitHub?
...
To reference a commit, simply write its SHA-hash, and it'll automatically get turned into a link.
See also:
The Autolinked references and URLs / Commit SHAs section of
Writing on GitHub.
share
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How to cast an object in Objective-C
... Great answer. You could make it a little clearer by breaking out the cast and assignment into two lines.
– Guido Anselmi
Jun 3 '14 at 21:06
1
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Difference between git pull --rebase and git pull --ff-only
Let's say origin/master has commit A--B--C and my local/master has commit A--B--D .
1 Answer
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Show MySQL host via SQL Command
All good and well, but is it possible to show the current connections host.
Not connection_id, but the IP Address or Name of the host.
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How to add a spinner icon to button when it's in the Loading state?
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data-loading-text is deprecated since v3.3.5 and will be removed in v4.
– Jonathan
Jun 28 '15 at 19:57
2
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Determining 32 vs 64 bit in C++
...he major compilers use for determining if it's a 64 bit environment or not and use that to set my variables.
// Check windows
#if _WIN32 || _WIN64
#if _WIN64
#define ENVIRONMENT64
#else
#define ENVIRONMENT32
#endif
#endif
// Check GCC
#if __GNUC__
#if __x86_64__ || __ppc64__
#define ENVIRONMENT6...