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Free space in a CMD shell
...o put the free space into a variable one could use the following: @FOR /F "tokens=2 delims==" %%S IN ('wmic /NODE:"%COMPUTERNAME%" LogicalDisk Where ^(DriveType^="3" and DeviceID^="%some_folder:~0,2%"^) Get FreeSpace /VALUE') DO @SET freespace=%%S
– Davor Josipovic
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Practical use of `stackalloc` keyword
Has anyone ever actually used stackalloc while programming in C#? I am aware of what is does, but the only time it shows up in my code is by accident, because Intellisense suggests it when I start typing static , for example.
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How can you find and replace text in a file using the Windows command-line environment?
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Beware that the replace token ('foo' in this case) is treated as a regular expression. If you have any special characters there ( I had [ ] ), you need to prepend them with a \ (backslash).
– J W
Mar 3 '16 at 1...
How to find memory leak in a C++ code/project?
...e software tools
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Understand the operator basics. The C++ operator new allocates heap memory. The delete operator frees heap memory. For every new, you should use a delete so that you free the same memory you allocated:
char* str = new char [30]; // Allocate 30 bytes to house a string.
delete ...
How do I download a tarball from GitHub using cURL?
...ix.
You can also retrieve the archive of a private repo, by specifying -u token:x-oauth-basic option to curl. Replace token with a personal access token.
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Does Haskell require a garbage collector?
...emory management is necessary.
So in this sense, automated dynamic memory allocation is necessary, and in practice this means: yes, Haskell requires a garbage collector, since garbage collection is the highest-performance automatic dynamic memory manager.
However...
Although a garbage collector i...
C++, Free-Store vs Heap
Dynamic allocations with new/delete are said to take place on the free-store , while malloc/free operations use the heap .
I'd like to know if there is an actual difference, in practice.
Do compilers make a distinction between the two terms? ( Free store and Heap , not new/malloc )
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Under what circumstances are linked lists useful?
...any linked lists are stored in an array.
It avoids doing many small (de)allocations on inserts/deletes.
Initial loading of the hash table is pretty fast, because the array is filled sequentially (plays very nice with CPU cache).
Not to mention that a chaining hash table is expensive in terms of ...
Efficiency of premature return in a function
...letely disregarded.
If the simple example above is extended with resource allocation, and then error checking with a potential resulting freeing of resources, the picture might change.
Consider the naive approach beginners might take:
int func(..some parameters...) {
res_a a = allocate_resource...
Java “Virtual Machine” vs. Python “Interpreter” parlance?
... a specific grammer that must be decoded in the context of the surrounding tokens. You can't look at each byte or even each line in isolation and know exactly what to do next. The tokens in the language can't be taken in isolation like they can relative to the instructions (byte codes) of a VM.
A J...