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What's the difference between globals(), locals(), and vars()?
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176
Each of these return a dictionary:
globals() always returns the dictionary of the module name...
When do you need to explicitly call a superclass constructor?
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Jon SkeetJon Skeet
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How to set a stroke-width:1 on only certain sides of SVG shapes?
...ik DahlströmErik Dahlström
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Can inner classes access private variables?
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edited Mar 17 '15 at 6:57
SimplyKnownAsG
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answered Ja...
Can you do greater than comparison on a date in a Rails 3 search?
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227
Note.
where(:user_id => current_user.id, :notetype => p[:note_type]).
where("date >...
What's the result of += in C and C++?
...the left operand after the assignment, but is not an
lvalue.
In C++ 5.17.1:
The assignment operator (=) and the compound assignment operators all group right-to-left. All require a modifiable
lvalue as their left operand and return an lvalue with the type and value of the left operand aft...
What does iterator->second mean?
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Joseph MansfieldJoseph Mansfield
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how does array[100] = {0} set the entire array to 0?
...It's not magic.
The behavior of this code in C is described in section 6.7.8.21 of the C specification (online draft of C spec): for the elements that don't have a specified value, the compiler initializes pointers to NULL and arithmetic types to zero (and recursively applies this to aggregates). ...
In Ruby on Rails, what's the difference between DateTime, Timestamp, Time and Date?
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579
The difference between different date/time formats in ActiveRecord has little to do with Rails ...
Update multiple rows in same query using PostgreSQL
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edited Dec 5 '17 at 21:25
answered Sep 14 '13 at 7:39
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