大约有 3,285 项符合查询结果（耗时：0.0213秒） [XML]
C++ STL Vectors: Get iterator from index?
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way mentioned by @dirkgently ( v.begin() + index ) nice and fast for vectors
but std::advance( v.begin(), index ) most generic way and for random access iterators works constant time too.
EDIT
differences in usage:
std::vector<>::iterator it = ( v.begin() + index );
o...
DateTime2 vs DateTime in SQL Server
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@PankajParkar: Woah, not so fast. You might want to look at the Cons section of my Answer dated 7/10/17 below.
– Tom
Jul 10 '17 at 23:46
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How would one write object-oriented code in C? [closed]
...mart guys, who had to actually implement that and make that implementation fast (Google, V8 engine) have done everything do add (hidden) classes to JavaScript back.
– cubuspl42
Feb 10 '13 at 21:03
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Why would I use a templating engine? jsp include and jstl vs tiles, freemarker, velocity, sitemesh
...y (and I don't have solid numbers for this), Velocity has always just felt fast for me.
Layout reorganization - if you want to move the breadcrumb above the menu, or the login box above another side-panel. If page inclusions (with jsp) is not well organized, you might need to change every single...
Windows batch: formatted date into variable
...equires admin permissions!:
MAKECAB - will work on EVERY Windows system (fast, but creates a small temporary file) (the foxidrive script):
@echo off
pushd "%temp%"
makecab /D RptFileName=~.rpt /D InfFileName=~.inf /f nul >nul
for /f "tokens=3-7" %%a in ('find /i "makecab"^<~.rpt') do (
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What is the largest Safe UDP Packet Size on the Internet
..." atop it" is blatantly wrong. UDP is great for broadcasting and great for fast sending of 'non-critical' data. (In regards to games) you can discover (LAN) servers/services using UDP and use UDP to send player locations rapidly. If one packet is being dropped; you do not care because the next pack...
Why can lambdas be better optimized by the compiler than plain functions?
...pred(x);}) does. Clang manages to inline both, but doesn't produce code as fast as g++ with the lambda.
– rici
Feb 1 '16 at 20:47
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show 3 m...
ActiveMQ or RabbitMQ or ZeroMQ or [closed]
...processing
ZMQ
The socket library that acts as a concurrency framework
Faster than TCP, for clustered products and supercomputing
Carries messages across inproc, IPC, TCP, and multicast
Connect N-to-N via fanout, pubsub, pipeline, request-reply
Asynch I/O for scalable multicore message-passing a...
Method chaining - why is it a good practice, or not?
...only had to specify a few. With overrides this became very cumbersome very fast. Instead I opted for the chaining approach:
MyObject.Start()
.SpecifySomeParameter(asdasd)
.SpecifySomeOtherParameter(asdasd)
.Execute();
The method chaining approach was optional, but it made writing code...
What is the difference between a var and val definition in Scala?
...q.isEmpty) {
num *= 10
num += q.dequeue
}
num
}
This code is fast and easy to understand. Its main drawback is that the queue that is passed is modified by toNum, so you have to make a copy of it beforehand. That's the kind of object management that immutability makes you free from.
N...