Comment by Marco A. on How can I assign an array to a fixed matrix index?
@markzzz you're assigning the same row multiple times. Either assign to the elements of the matrix directly (as in here) or dynamically allocate the rows (e.g. with new[]) for the matrix before...
View ArticleComment by Marco A. on How can I write a script to create EC2 instance
I'll just add this as a comment: for any complex stack you can also use cloudformation templates
View ArticleComment by Marco A. on More concise way to declare high dimensional vector
@zetta yes it is possible, keep in mind that you might invalidate iterators if you resize the vectors
View ArticleComment by Marco A. on What is Destination and Target in Route table (AWS VPC)?
Routes and access privileges are two different things. I would use network-level ACLs to control access to the VPC.
View ArticleComment by Marco A. on Is there any way to catch AWS lambda timed out error...
Might be of help: context.get_remaining_time_in_millis() (and node/others equivalents) will give you the remaining execution time
View ArticleComment by Marco A. on Opening a File from a FileInfo
Besides there could be multiple paths and the user could only have access to some of them: github.com/golang/go/issues/32300#issuecomment-496984069
View ArticleComment by Marco A. on How to configure AWS S3 SDK for Node.JS to be used...
@adam-beck Mark is right: when set to true it forces http://{host}/{bucket}/{key} paths. This might be a lifesaver when e.g. configuring SSL for random subdomains.
View ArticleComment by Marco A. on Adding SQS Permissions with conditions using AWS CLI...
Correct since the attribute you're setting is, in fact, the queue's Policy (awscli.amazonaws.com/v2/documentation/api/latest/reference/‌​sqs/…)
View ArticleComment by Marco A. on Why is an int variable valued `0xffffffff >> 1` !=...
int and unsigned int. I agree: try to print the values to inspect this better.
View ArticleComment by Marco A. on Adding Boost to CMake project?
To see which libraries are not header only see this post. has a broken link. No idea where it used to point. Maybe stackoverflow.com/q/13604090/1938163 ?
View ArticleComment by Marco A. on C-style conditional compilation in golang
An example of what @JohnLeidegren was talking about can be found here
View ArticleComment by Marco A. on mismatched types 'std::chrono::_V2::steady_clock' and...
It would be good to mark this as your own answer.
View ArticleComment by Marco A. on Qt - how to detect line count increase after word...
It is never too late to help someone, thank you for replying!
View ArticleComment by Marco A. on how to get number of method in class?
Sounds like you need an interface and proper versioning
View ArticleDoxygen issue: chapter are all 0
I have some doxygen groups defined in a fake .h file@defgroup MainGroup@brief ...@defgroup SubGroup1@brief ...@ingroup MainGroup@defgroup SubGroup1@brief ...@ingroup MainGroupnow the problem is that...
View ArticleAnswer by Marco A. for Lightweight doxygen html output
With doxygen you can export your data in html format, tex format, XML (which you can later parse as you want), RTF, Man pages or Docbook.The html output supports a custom header, footer and stylesheet...
View ArticleCUDA - can't compile .cu files because of "gcc: error trying to exec...
I'm trying to compile a simple .cu file with CUDA 5 and gcc 4.7.3 on Ubuntu 13.0 but I'm gettinggcc: error trying to exec 'cc1plus': execvp: No such file or directoryHow can I fix this?
View ArticleDifference between typedef and C++11 type alias [duplicate]
I'm reading template aliases here: http://en.cppreference.com/w/cpp/language/type_aliasAnd I'm wondering, even if it's written on the very first line of the page I linked, what's the difference between...
View ArticleChange Eclipse toolbar icon dynamically
I've got a toolbar item with its own icon, defined in the plugin.xml file...
View ArticleReadProcessMemory to find a pattern - granularity?
I need to find a pattern into another process' memory and I'm using ReadProcessMemory. Since I'm using algorithms like rabin karp or similars (pattern matching) and since ReadProcessMemory copies...
View ArticleFacebook Javascript: display more posts on the wall
I am creating a Chrome extension which has a Javascript modifying Facebook page layout, how can I make the wall displaying older posts?I've tried injecting a script into the page and calling the...
View ArticleCUDA - how much slower is transferring over PCI-E?
If I transfer a single byte from a CUDA kernel to PCI-E to the host (zero-copy memory), how much is it slow compared to transferring something like 200 Megabytes?What I would like to know, since I know...
View ArticleAnswer by Marco A. for Function calling conventions
Calling conventions are commonly used to have a function call adhere to an ABI.An example with a different architecture (a gpu): when calling low-level CUDA routines (device functions) you have to...
View ArticleAnswer by Marco A. for Getting GitLab CI to clone private repositories
I'm posting this as an answer since others weren't completely clear and/or detailed IMHOStarting from GitLab 8.12+, assuming the submodule repo is in the same server as the one requesting it, you can...
View ArticleDoxygen - any way to get a module hierarchy?
It seems that even if I specify my groups as follows:@defgroup MainGroup@brief ...@defgroup SubGroup1@brief ...@ingroup MainGroup@defgroup SubGroup2@brief ...@ingroup SubGroup1The hierarchy in the...
View ArticleAppending compiler flags to a file with CMake
How do I add a compiler flag (I want to APPEND it, not overwrite the others) to a single translation unit with cmake?I tried with set_source_files_properties(MyFile.cpp PROPERTIES CMAKE_CXX_FLAGS...
View ArticlePTX - what is a CTA?
I'm studying PTX and I don't understand how a CTA (compute thread array) is different from a CUDA block. Are they the same thing? It seems to me that for now (I'm just at the beginning of the PTX...
View ArticleAnswer by Marco A. for Can a Macro with a goto statement and a label be defined?
A macro is a textual substitution taken care by the preprocessor so, yes you can. You can define a macro for a goto statement and/or a label.Ps. anyway that's a terrible practice.. both using lots of...
View ArticleAnswer by Marco A. for Convert RGBA to HEX
Since alpha value both attenuates the background color and the color value, something like this could do the trick:function rgba2rgb(RGB_background, RGBA_color){ var alpha = RGBA_color.a; return new...
View ArticleWhy doesn't a left fold expression invert the output of a right fold expression?
I'm taking a look at C++17 fold expressions and I'm wondering why does the following program outputs4 5 6 4 5 6 for both of the for_each callstemplate<typename F, typename... T>void for_each1(F...
View ArticleAnswer by Marco A. for The consequences and pros/cons of flushing the stream...
When buffering occurs you will have no guarantees that the data is immediately received before a flush occurs. Under particular circumstances you might experience wrong output ordering and/or loss of...
View ArticleRemoving a macro with doxygen
I have the following function:void MYMACROTOEXPORTFUNCTION function1()how do I instruct doxygen to remove the "MYMACROTOEXPORTFUNCTION" part from the documentation and prevent it from being shown? I...
View ArticleHow to check Windows version in CMake?
How do I check with CMake whether I'm configuring a Visual Studio solution for e.g. Windows 7 or Windows 8?Is there any way to do this?
View ArticleAnswer by Marco A. for How is a template instantiated?
In your specific case a declaration doesn't mean an instantiation#include <iostream>using namespace std;template <typename T> class Stack { typedef typename T::ThisDoesntExist StaticAssert;...
View ArticleAnswer by Marco A. for Simple stripchart in C++ / Qt
Take a look at the following widgets:http://qwt.sourceforge.net/http://kde-apps.org/content/show.php?content=14017http://www.qcustomplot.com/Also charts might be a good choice (easy to implement with...
View ArticleCUFFT - padding/initializing question
I am looking at the Nvidia SDK for the convolution FFT example (for large kernels), I know the theory behind fourier transforms and their FFT implementations (the basics at least), but I can't figure...
View ArticleCMake express the "greater or equal" statement
I know that in CMake I can check for the compiler version like thisif(MSVC_VERSION LESS 1700)... // MSVC is lower than MSVC2012but how do I express this in CMake syntax?if(MSVC_VERSION...
View ArticleCan't get eclipse to recognize my plugin
I exported my eclipse plugin through the "Export Wizard" in the manifest and seems like everything went well (no errors). It created a .jar file within a plugin directory in a zip file.I thought...
View ArticleAnswer by Marco A. for Casting char[] to usigned int gives: dereferencing...
The problem with your code is that violates strict aliasing rules and thus it's potentially unsafe.You can either hide the warning with -Wno-strict-aliasing (this won't solve your problem), modify your...
View ArticleCan a thread call SuspendThread passing its own thread ID?
Can a Windows thread suspend itself with SuspendThread()?I can awake it from another one but, can it call SuspendThread(GetCurrentThreadId())?
View ArticleMost vexing parse confusion
I'm studying C++11 and I stumbled upon uniform initializers.I don't understand the following code which should show the "most vexing parse" ambiguity:#include<iostream>class Timer{public: Timer()...
View ArticleAnswer by Marco A. for Cuda math functions
You're probably mismatching the type of the argument and thus calling a host code function as a "fallback mechanism".Make sure you're using the right type for the function (which is not float, but...
View ArticleAnswer by Marco A. for Where is the definition of `top-level cv-qualifiers`...
From Dan Saks's Top-Level cv-Qualifiers in Function Parameters:In C++, a cv-qualifier that applies to the first level of a type is called a toplevel cv-qualifier. For example, in:T *const p;the...
View Articlewhat happens when a CUDA kernel is called?
I'm wondering what happens in a CUDA program when a line likemyKernel<<<16,4>>>(arg1,arg2);is encountered.What happens then? Is the CUDA driver invoked and the ptx code passed to it...
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