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Determine if map contains a value for a key?
What is the best way to determine if a STL map contains a value for a given key?
10 Answers
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Why are C# 4 optional parameters defined on interface not enforced on implementing class?
...t makes the method have an optional parameter?
That's not going to fly. What if two people call up the author of B, and one of them wants the default to be true and one of them wants it to be false? What if the author of B simply refuses to play along?
Perhaps in that case they would be required...
Why is January month 0 in Java Calendar?
... just part of the horrendous mess which is the Java date/time API. Listing what's wrong with it would take a very long time (and I'm sure I don't know half of the problems). Admittedly working with dates and times is tricky, but aaargh anyway.
Do yourself a favour and use Joda Time instead, or poss...
Check if a Python list item contains a string inside another string
...f-456', 'ghi-789', 'abc-456']
if any("abc" in s for s in some_list):
# whatever
If you really want to get all the items containing abc, use
matching = [s for s in some_list if "abc" in s]
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ASP.NET MVC: What is the purpose of @section? [closed]
... child directories will run the ViewStart before it runs itself.
Which is what tells us that Index.cshtml uses Shared/_Layout.cshtml.
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What are the effects of exceptions on performance in Java?
...ow, however if no exception is thrown, exiting the try block takes no time whatsoever in most cases (as everything is put on the stack which cleans up automatically if the method exists).
Sun and others recognized, that this is possibly suboptimal and of course VMs get faster and faster over the ti...
How to match, but not capture, part of a regex?
...receded by 123- and followed by 456.
|Lookaround | Name | What it Does |
-----------------------------------------------------------------------
|(?=foo) | Lookahead | Asserts that what immediately FOLLOWS the |
| | | current pos...
What are all the common ways to read a file in Ruby?
What are all the common ways to read a file in Ruby?
10 Answers
10
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What is the difference between single and double quotes in SQL?
What is the difference between single quotes and double quotes in SQL?
6 Answers
6
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Convert Python dict into a dataframe
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@user1009091 I realised what the error means now, it's basically saying "What I'm seeing is a Series, so use Series constructor".
– Andy Hayden
Sep 16 '13 at 21:16
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