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Is there any overhead to declaring a variable within a loop? (C++)
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You are right, "optimization" is the wrong word but I am at a loss for a better one.
– Andrew Hare
Jun 11 '09 at 19:11
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How do I manipulate a variable whose name conflicts with PDB commands?
...current stack frame. The exclamation point can be omitted unless the first word of the statement resembles a debugger command. [...]
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Difference between >>> and >>
...the leftmost position after >> depends on sign extension.
In simple words >>> always shifts a zero into the leftmost position whereas >> shifts based on sign of the number i.e. 1 for negative number and 0 for positive number.
For example try with negative as well as positive...
Difference between clustered and nonclustered index [duplicate]
...s the table’s rows by that column(s). It is like a dictionary, where all words are sorted in alphabetical order in the entire book.
A non-clustered index, on the other hand, does not alter the way the rows are stored in the table. It creates a completely different object within the table that co...
Use curly braces to initialize a Set in Python
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Compare also the difference between {} and set() with a single word argument.
>>> a = set('aardvark')
>>> a
{'d', 'v', 'a', 'r', 'k'}
>>> b = {'aardvark'}
>>> b
{'aardvark'}
but both a and b are sets of course.
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What is the email subject length limit?
...the subject you set: 1. Spaces should be encoded with '_', 2. An 'encoded-word' (=?charset?Q/B?data?=) may not be more than 75 characters long (rfc2047). 3rd You can not escape new line with '=' char at the end of the line (header QP encoding is different then body QP). Bottom line is: it is not Ou...
Questions every good Java/Java EE Developer should be able to answer? [closed]
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@Joachim: you could drop the word "Java" from your statement. Sets, Maps, and Lists are basic algorithmic notions.
– CPerkins
Jan 25 '10 at 20:46
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Select element based on multiple classes
...wo classes. Is there any way to perform this without JavaScript? In other words:
3 Answers
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Test whether a Ruby class is a subclass of another class
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@JunanChakma Based on how the English word "ancestors" is defined, I agree that the return value should not include B. But it does. The method documentation says, "Returns a list of modules included/prepended in mod (including mod itself)." (emphasis mine). I'm g...
Best practices for catching and re-throwing .NET exceptions
... object. This forces you to be a little smarter about exceptions; in other words you should have an explicit catch for a SqlException so that your handling code doesn't do something wrong with a NullReferenceException.
In the real world though, catching and logging the base exception is also a good...