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Constantly print Subprocess output while process is running
To launch programs from my Python-scripts, I'm using the following method:
13 Answers
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LINGO使用指南 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...制程序如下：
model:
!6发点8收点运输问题;
sets:
warehouses/wh1..wh6/: capacity;
vendors/v1..v8/: demand;
links(warehouses,vendors): cost, volume;
endsets
!目标函数;
min=@sum(links: cost*volume);
!需求约束;
@for(vendors(J):
@sum(warehouses(I): volume(I,J...
How to find out what type of a Mat object is with Mat::type() in OpenCV
I am kind of confused with type() method of Mat object in OpenCV. If I have following lines:
6 Answers
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What is the difference between RegExp’s exec() function and String’s match() function?
If I run this:
6 Answers
6
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sed edit file in place
I am trying to find out if it is possible to edit a file in a single sed command without manually streaming the edited content into a new file and then renaming the new file to the original file name. I tried the -i option but my Solaris system said that -i is an illegal option. Is there a d...
How do I convert between big-endian and little-endian values in C++?
How do I convert between big-endian and little-endian values in C++?
31 Answers
31
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Download a file from NodeJS Server using Express
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Update
Express has a helper for this to make life easier.
app.get('/download', function(req, res){
const file = `${__dirname}/upload-folder/dramaticpenguin.MOV`;
res.download(file); // Set disposition and send it.
});
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Specifying and saving a figure with exact size in pixels
Say I have an image of size 3841 x 7195 pixels. I would like to save the contents of the figure to disk, resulting in an image of the exact size I specify in pixels.
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Android: upgrading DB version and adding new table
I've already created sqlite tables for my app, but now I want to add a new table to the database.
5 Answers
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How to define “type disjunction” (union types)?
One way that has been suggested to deal with double definitions of overloaded methods is to replace overloading with pattern matching:
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