#include <thread>#include <vector>int& stuff() {staticintvar = printf("will only print once");returnvar; }intmain() { std::vector<std::thread> v;for(intn = 0; n<100; ++n) v.emplace_back(stuff);for(auto& t: v) t.join(); } ...
When your function returns the std::string is destroyed. That certainly qualifies as modification.You need to store the memory for your string somewhere that is stable until the C# code is done or has made a copy of a string. (In general you don't want to return pointers from a C++ ...
ReplaceFileFromApp function (Windows) IBufferManager::AllocBuffer To Open a Project File StaticThumbnail Element GetTexture Graph Element (Child of MainToNotesTransition) NumInputs Element EntrancePosition Element Windows Movie Maker Programming Reference CD3D11_SAMPLER_DESC::operator const D3D11_SAMPLER...
,产生集群故障。 8.3.0.101 升级到8.3.0.110及以上版本 列存表查询语句中出现多结果集函数时,执行该语句会报错Set-returning function is not supported in vector engine。 非表的scan算子上的向量化执行引擎不支持多结果集函数。 来自:帮助中心 查看更多 → ...
http://www.cplusplus.com/reference/stl/vector/ Another way to solve such leaks is to use auto_ptr: http://www.cplusplus.com/reference/std/memory/auto_ptr/ And another way is to expect the caller to allocate all buffers that you need, suitably large, and pass them to your function. Tho...
i'm pretty sure you are aware of this but i still wanted to comment on it: i think the sample code is using too much pointers to start with. unless this is to adapt a legacy c api or an exercise, i can't imagine why you would not want to use std::string and std::...
Checking Matlab indices exists, returning boolean value should be zero if there is no value or the index does not exists, this works in C++, C# etc.. Is there any function in Matlab. Like I am accessing every pixel, and its 8 neighbourhood, please suggest. Regards...
In this post, we'll learn how a function takes a slice parameter and returns a slice. Sample code #1 - Prime numbers In the following code, we'll try to get prime numbers up to 100. The function (getPrimes) takes a slice as its argument and gathers primes. Then, returning it to ...
> x = c(NA) > min(x) [1] NA > max(x) [1] NA In this example, we set the value of the vector that we put through the maxx and minxfunctions to a missingvalue. The result is amissing value but no error. > plotting = function(y,x,table){ ...
This problem results from entering neither a numeric nor logical argument into the mean() function. In the example above, it is a vector of characters however it can happen anytime a vector contains a value that is neither numeric or logical. ...