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Using custom std::set comparator
...the type parameter
set<int64_t, lex_compare> s;
If you want to avoid the functor boilerplate code you can also use a function pointer (assuming lex_compare is a function).
set<int64_t, bool(*)(const int64_t& lhs, const int64_t& rhs)> s(&lex_compare);
...
nServiceBus vs Mass Transit vs Rhino Service Bus vs other?
...NServiceBus, and so his opinion may be a little biased here. :) Having said that, I completely agree, and would advocate the use of NServiceBus for the same reasons he has done.
– skb
Apr 24 '10 at 20:33
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What is “thread local storage” in Python, and why do I need it?
...wing sentence please? "If you want to atomically modify anything that you didn't just create in this very same thread, and did not store anywhere another thread can get at it, you have to protect it by a lock."
– changyuheng
May 11 '18 at 20:35
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what does the __file__ variable mean/do?
...le__), '..')
# A is the parent directory of the directory where program resides.
B = os.path.dirname(os.path.realpath(__file__))
# B is the canonicalised (?) directory where the program resides.
C = os.path.abspath(os.path.dirname(__file__))
# C is the absolute path of the directory where the prog...
How to “warm-up” Entity Framework? When does it get “cold”?
...issue in EF). Neither build your inheritance hierarchies too deep nor too wide. Only 2-3 properties specific to some class may not be enough to require an own type, but could be handled as optional (nullable) properties to an existing type.
Don't hold on to a single context for a long time. Each co...
MPICH vs OpenMPI
...ports both of these networks and others natively (i.e. without OFI in the middle).
In the past, a common complaint about MPICH is that it does not support InfiniBand, whereas Open-MPI does. However, MVAPICH and Intel MPI (among others) - both of which are MPICH derivatives - support InfiniBand, so...
How to use Git properly with Xcode?
...me time. The solution in 99% of the merge conflict cases is to keep both sides of the merge, which for git at least simply involves removing any >>>>, <<<<, and ==== lines. In fact this is so common that I have created a simple shell script to fix a .pbxproj file in a merge...
dplyr summarise: Equivalent of “.drop=FALSE” to keep groups with zero length in output
...pecially since your data are already factored, you can use complete from "tidyr" to get what you might be looking for:
library(tidyr)
df %>%
group_by(b) %>%
summarise(count_a=length(a)) %>%
complete(b)
# Source: local data frame [3 x 2]
#
# b count_a
# (fctr) (int)
# 1 ...
What is the >>>= operator in C?
...
I didn't run it - would this not produce ????, though, rather than ??? as the OP got? (Huh.) codepad.org/nDkxGUNi does produce ???.
– usr2564301
Aug 25 '14 at 22:34
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Angularjs loading screen on ajax request
...reen (a simple spinner) until ajax request is complete. Please suggest any idea with a code snippet.
15 Answers
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