memory

问题 I do not want to molest you with this, but i just can not find anywhere in the internet a well-described explanation for what "bit padding" really is, as well as not in any answer for bit padding-related threads here on StackOverflow. I also searched ISO 9899-1990 for it, in which "bit padding" is refered to but quite not explained as i need it. The only content in the web i found about this was here, where only one ridiculously short explanation of one sentence was given, saying: bit padding

问题 I do not want to molest you with this, but i just can not find anywhere in the internet a well-described explanation for what "bit padding" really is, as well as not in any answer for bit padding-related threads here on StackOverflow. I also searched ISO 9899-1990 for it, in which "bit padding" is refered to but quite not explained as i need it. The only content in the web i found about this was here, where only one ridiculously short explanation of one sentence was given, saying: bit padding

问题 tl;dr Does Python reuse ids? How likely it is that two objects with non overlapping lifetime will get the same id? Background: I've been working on a complex project, written purely in Python 3. I've been seeing some issues in testing and spent a lot of time searching for a root cause. After some analysis, my suspicion was that when the testing is being run as a whole (it's orchestrated and being run by a dedicated dispatcher) it's reusing some mocked methods instead of instatiating new

问题 tl;dr Does Python reuse ids? How likely it is that two objects with non overlapping lifetime will get the same id? Background: I've been working on a complex project, written purely in Python 3. I've been seeing some issues in testing and spent a lot of time searching for a root cause. After some analysis, my suspicion was that when the testing is being run as a whole (it's orchestrated and being run by a dedicated dispatcher) it's reusing some mocked methods instead of instatiating new

问题 The problem I am writing a thin C++ wrapper around an object oriented C library. The idea was to automate memory management, but so far its not been very automatic. Basically when I use my wrapper classes, I get all kinds of memory access and inappropriate freeing problems. Minimal example of C library Lets say the C library consists of A and B classes, each of which have a few 'methods' associated with them: #include <memory> #include "cstring" #include "iostream" extern "C" { typedef struct

问题 I'm wondering if there's a memory cost to having multiple "constant reference" variables in the same scope pointing to the same object: const Animal& animal = getAnimal(); const Dog& dog = static_cast<const Dog&>(animal); Conceptually, animal and dog are two variables, each of pointer size, and thus would take up 2 registers (or a 2*pointer-size region on the stack). But (assuming that there's no multiple inheritance etc.), the compiler could know that they both must hold the same pointer

问题 I have a job that requires more memory than the default configuration to compile a large project. I use hosted shared runners. Is there a way to specify in gitlab-ci.yml the required memory per job ? 回答1: This feature is not currently available, and the development is being tracker in https://gitlab.com/gitlab-org/gitlab-runner/issues/2902 来源： https://stackoverflow.com/questions/60114468/how-to-specify-in-gitlab-ci-yml-the-memory-for-a-job

问题 I have a job that requires more memory than the default configuration to compile a large project. I use hosted shared runners. Is there a way to specify in gitlab-ci.yml the required memory per job ? 回答1: This feature is not currently available, and the development is being tracker in https://gitlab.com/gitlab-org/gitlab-runner/issues/2902 来源： https://stackoverflow.com/questions/60114468/how-to-specify-in-gitlab-ci-yml-the-memory-for-a-job

问题 My intuition was that writing a file line by line as possible in python, in the same way, that reading it is. I was wrong. Consider the following code. with open("source_file.csv","r") as source, open("output_file.csv","w") as dest: while 1: buf = source.read(16*1024) if not buf: break dest.write(buf) I observed how the output file is written via a $ tail -f output_file.csv. Data is displayed as it is being written. I interrupted the python script and noticed that none of that data was

问题 How do one create PDF in memorystream instead of physical file using itext7? I have no idea how to do it in the latest version, any help? I tried the following code, but pdfSM is not properly populated: string filePath = "./abc.pdf"; MemoryStream pdfSM = new ByteArrayOutputStream(); PdfDocument doc = new PdfDocument(new PdfReader(filePath), new PdfWriter(pdfSM)); ....... doc.close(); The full testing code as below for your reference, it worked when past filePath into PdfWriter but not for the