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Why have header files and .cpp files? [closed]
...ependencies so that code that uses the header doesn't necessarily need to know all the details of the implementation and any other classes/headers needed only for that. This will reduce compilation times and also the amount of recompilation needed when something in the implementation changes.
It's ...
When to use next() and return next() in Node.js
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@AdamD I would like to know that as well.
– theprogrammer
Sep 1 at 23:01
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Insert/Update Many to Many Entity Framework . How do I do it?
... joining table. That is the correct behaviour and that's what you expect.
Now, when doing inserts or updates, try to think in terms of objects. E.g. if you want to insert a class with two students, create the Class object, the Student objects, add the students to the class Students collection add t...
How to make an Android Spinner with initial text “Select One”?
...e from above into your project, e.g. into package com.example.customviews. Now in your layout xml, instead of <Spinner ...> use <com.example.customviews.NoDefaultSpinner ...> The rest of the code can stay the same. Don't forget to add the android:prompt attribute to the <com.example.c...
Folder structure for a Node.js project
... folder does has different meanings for different people on some folders.
Now, having done multiple projects, in addition to explanation in all other answers, on the folder structure itself, I would strongly suggest to follow the structure of Node.js itself, which can be seen at: https://github.com...
Generate a heatmap in MatPlotLib using a scatter data set
...in plot; so do (AFAIK) all of the plotting libraries for R; still i don't know if this is the generally accepted term for plots of this type, though i suspect it's likely given that hexbin is short for hexagonal binning, which is describes the essential step in preparing the data for display.)
fr...
Why is address zero used for the null pointer?
... In the days when C was first developed, memory was MUCH more costly than now. The number zero can be conveniently calculated using an XOR instruction or without the need to load an immediate value. Depending upon the architecture, this could potentially save space.
– Sparky...
Why doesn't Java allow generic subclasses of Throwable?
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Oh, now I get it. My solution would cause problems with RuntimeExceptions, which don't have to be declared. So if SomeExc is a subclass of RuntimeException, I could throw and explicitly catch SomeExc<Integer>, but maybe som...
Suggestions for debugging print stylesheets?
...s should do the trick.
Update: The menus have changed in DevTools.
It can now be found by clicking on the "three-dots" menu in the top right corner > More Tools > Rendering Settings > Emulate media > print.
Source: Google DevTools page*
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When is it appropriate to use UDP instead of TCP? [closed]
...t handle that many sessions. This is a rare case today. In fact, there are now user-land TCP stacks that can be used so that the application writer may have finer grained control over the resources needed for that TCP state. Prior to 2003, UDP was really the only game in town.
One other case is for...