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Difference between this and self in self-type annotations?
In various Scala literature I see some self-type annotations using "this" and others using "self":
2 Answers
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Finding a branch point with Git?
...with branches master and A and lots of merge activity between the two. How can I find the commit in my repository when branch A was created based on master?
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Differences between utf8 and latin1
...o at least 5.5 or go for another RDBMS like PostgreSQL. In MySQL 5.5+ it's called utf8mb4.
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Python: Using .format() on a Unicode-escaped string
...> print s
≥
>>> print "{0}".format(s)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
UnicodeEncodeError: 'ascii' codec can't encode character u'\u2265' in position 0: ordinal not in range(128)
>>> print u"{0}".format(s)
≥
>>>
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How to force a view refresh without having it trigger automatically from an observable?
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You can't call something on the entire viewModel, but on an individual observable you can call myObservable.valueHasMutated() to notify subscribers that they should re-evaluate. This is generally not necessary in KO, as you ment...
is vs typeof
...TypeHandle to the ldtoken CIL instruction, but it looks like the CLR takes care of it in the JIT. It still takes a few extra opcodes but it's a more generalized application of the optimization.
– Sam Harwell
Feb 22 '10 at 18:39
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differences between 2 JUnit Assert classes
...nt packages, obviously) and the methods on each appear to be very similar. Can anybody explain why this is?
6 Answers
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How do I set a column value to NULL in SQL Server Management Studio?
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If you are using the table interface you can type in NULL (all caps)
otherwise you can run an update statement where you could:
Update table set ColumnName = NULL where [Filter for record here]
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How do I convert an interval into a number of hours with postgres?
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And maybe floor or cast the result to integer if the interval contains minutes and/or seconds
– rasjani
Jun 4 '09 at 19:25
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How can I define a composite primary key in SQL?
How can I define a composite primary key consisting of two fields in SQL?
3 Answers
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