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Best way to merge two maps and sum the values of same key?
I want to merge them, and sum the values of same keys. So the result will be:
15 Answers
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AVAudioPlayer throws breakpoint in debug mode
Every time I load the app it stops as if I had set a breakpoint on this line:
6 Answers
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What resources are shared between threads?
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You're pretty much correct, but threads share all segments except the stack. Threads have independent call stacks, however the memory in other thread stacks is still accessible and in theory you could hold a pointer to memory in some other thread's local stack frame (though you...
Checking whether a variable is an integer or not [duplicate]
...like an int, instead of mandating that it be one.
BUT
The classical Python mentality, though, is that it's easier to ask forgiveness than permission. In other words, don't check whether x is an integer; assume that it is and catch the exception results if it isn't:
try:
x += 1
except TypeError:
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MySQL show current connection info
...Like this one that resolves the user:
SELECT USER();
This will return something like root@localhost so you get the host and the user.
To get the current database run this statement:
SELECT DATABASE();
Other useful functions can be found here: http://dev.mysql.com/doc/refman/5.0/en/information...
Why is MySQL's default collation latin1_swedish_ci?
... He is Finnish , but Finnish and Swedish share almost the same special characters ,so they share the same case insensitive collation
– kommradHomer
Feb 26 '14 at 10:47
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PHP Difference between array() and []
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Following [] is supported in PHP >= 5.4:
['name' => 'test', 'id' => 'theID']
This is a short syntax only and in PHP < 5.4 it won't work.
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PostgreSQL query to return results as a comma separated list
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Note that for me at least, string_agg didn't like taking an int for its first argument so I did something like: string_agg(CAST(id as varchar), ',') instead.
– JZC
Jun 22 '15 at 17:24
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Using System.Dynamic in Roslyn
I modified the example that comes with the new version of Roslyn that was released yesterday to use dynamic and ExpandoObject but I am getting a compiler error which I am not sure how to fix. The error is:
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Check if two linked lists merge. If so, where?
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If
by "modification is not allowed" it was meant "you may change but in the end they should be restored", and
we could iterate the lists exactly twice
the following algorithm would be the solution.
First, the numbers. Assume the first list is of length a+c and the...