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Why are exclamation marks used in Ruby methods?
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630
In general, methods that end in ! indicate that the method will modify the object it's called o...
Why does this loop produce “warning: iteration 3u invokes undefined behavior” and output more than 4
...hy does it happen under the rules of C++ doesn't make sense.
C++11 draft N3337: §5.4:1
If during the evaluation of an expression, the result is not mathematically defined or not in the range of
representable values for its type, the behavior is undefined. [ Note: most existing implementati...
Valid values for android:fontFamily and what they map to?
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3 Answers
3
Active
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Escape single quote character for use in an SQLite query
... way), so it would be :
INSERT INTO table_name (field1, field2) VALUES (123, 'Hello there''s');
Relevant quote from the documentation:
A string constant is formed by enclosing the string in single quotes ('). A single quote within the string can be encoded by putting two single quotes in a ro...
git -> show list of files changed in recent commits in a specific directory
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answered Nov 5 '10 at 13:03
htanatahtanata
33.4k77 gold badges4747 silver badges5555 bronze badges
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Comparator.reversed() does not compile using lambda
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answered Aug 7 '14 at 3:23
Stuart MarksStuart Marks
103k3232 gold badges176176 silver badges233233 bronze badges
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How do I check in JavaScript if a value exists at a certain array index?
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answered Apr 20 '10 at 3:51
thomasrutterthomasrutter
101k2424 gold badges133133 silver badges156156 bronze badges
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Create empty queryset by default in django form fields
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432
You can have an empty queryset by doing this:
MyModel.objects.none()
Although i don't know h...
Drop all duplicate rows across multiple columns in Python Pandas
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renan-eccel
9388 bronze badges
answered Dec 14 '15 at 16:38
BenBen
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Append an object to a list in R in amortized constant time, O(1)?
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smci
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answered Mar 13 '10 at 1:56
Dirk Eddelbuette...