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Converting a list to a set changes element order
Recently I noticed that when I am converting a list to set the order of elements is changed and is sorted by character.
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Callback functions in C++
...nter to member function since different types can be passed and implicitly converted into a std::function object.
3.3.1 Function pointers and pointers to member functions
A function pointer
int a = 2;
int b = stdf_foobar(a, &foo);
// b == 6 ( 2 + (2+2) )
or a pointer to member function
int...
What does %s mean in a python format string?
... for 3.6 it works the same even if you use %s on integers, it will just be converted into a string.
– lapin
Mar 21 at 1:15
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Enable SQL Server Broker taking too long
...all the databases that have Service Broker enabled or disabled, then query sys.databases, for instance:
SELECT
name, database_id, is_broker_enabled
FROM sys.databases
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Checking if a string can be converted to float in Python
I've got some Python code that runs through a list of strings and converts them to integers or floating point numbers if possible. Doing this for integers is pretty easy
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Max return value if empty query
...n empty sequence but complaining that the materialized value NULL can't be converted into an int.
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What is the difference between SIGSTOP and SIGTSTP?
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@jlliagre I want to, but the system won't allow it, it says I can only cancel the downvote if the answer is edited…
– Archer
Jan 14 '19 at 12:17
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How do I concatenate two arrays in C#?
... This is what happens without the toArray() Cannot implicitly convert type 'System.Collections.Generic.IEnumerable<string>' to 'string[]'. An explicit conversion exists (are you missing a cast?)
– Tibor Udvari
Jun 16 '15 at 11:32
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The cast to value type 'Int32' failed because the materialized value is null
...To allow a nullable Amount field, just use the null coalescing operator to convert nulls to 0.
var creditsSum = (from u in context.User
join ch in context.CreditHistory on u.ID equals ch.UserID
where u.ID == userID
se...
Track the time a command takes in UNIX/LINUX?
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And, the meaning of real/user/sys times is nicely covered here
– prideout
Nov 14 '14 at 17:16
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