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How to calculate the CPU usage of a process by PID in Linux from C?
... state (R is running, S is sleeping, D is sleeping in an
uninterruptible wait, Z is zombie, T is traced or stopped)
ppid process id of the parent process
pgrp pgrp of the process
sid session id
tty_nr tty the process uses
tty_pgrp pgr...
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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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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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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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...
Python Unicode Encode Error
...bar” df' print u.encode('ascii', 'ignore') For you, it was probably converting your string INTO unicode given the encoding you specified for the python scrip that threw the error.
– Scott Stafford
Jul 11 '10 at 20:48
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