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lexers vs parsers
...egular grammar (Chomsky's level 3).
Grammar understood by parsers: context-free grammar (Chomsky's level 2).
They attach semantics (meaning) to the language pieces they find.
Lexers attach meaning by classifying lexemes (strings of symbols from the input) as the particular tokens. E.g. All these ...
Make Visual Studio understand CamelCase when hitting Ctrl and cursor keys
...008 (who don't want to pay for ReSharper or CodeRush which no longer has a free version), the following free Extension adds this functionality: Subword Navigation by Olle Westman
(Alternatively, the VSTricks extension includes Sub-word Navigation in its list of nifty features. There is also a diffe...
How do I trim leading/trailing whitespace in a standard way?
...which it was allocated. The return
// value must NOT be deallocated using free() etc.
char *trimwhitespace(char *str)
{
char *end;
// Trim leading space
while(isspace((unsigned char)*str)) str++;
if(*str == 0) // All spaces?
return str;
// Trim trailing space
end = str + strlen(...
How to find the 'sizeof' (a pointer pointing to an array)?
...ze, decrement the pointer and peek at the stashed value. Just remember to free the whole block starting from the beginning, and not just the array.
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When to use ' (or quote) in Lisp?
... print(f"(allocate {random.randint(0, 20)})")
else:
print(f"(free {random.randint(0, 20)})")
...
print(")")
Giving you output looking like this (slightly prettyfied):
'((allocate 3)
(allocate 7)
(free 14)
(allocate 19)
...)
Remember what I said about quote ("tick") cau...
Utilizing the GPU with c# [closed]
...uda 7.0).
Hybridizer. Commercial solution compiling C# to CUDA. Provides a free community edition on visual studio marketplace and samples on github.
AleaGPU Commercial solution with a free community edition for consumer GPUS. See Daniel's comments for details.
Brahma - runs LINQ expressions via Op...
vector vs. list in STL
...
Also, allocating from the free store is not free. :) Adding new items to a vector performs O(log n) free store allocations, but you can call reserve() to reduce that to O(1). Adding new items to a list (i.e. not splicing them) performs O(n) free store...
Given the lat/long coordinates, how can we find out the city/country?
...
The free Google Geocoding API provides this service via a HTTP REST API. Note, the API is usage and rate limited, but you can pay for unlimited access.
Try this link to see an example of the output (this is in json, output is al...
Stack, Static, and Heap in C++
...4kb for an object then the dynamic allocator will look through its list of free space in the heap, pick out a 4kb chunk, and give it to you. Generally, the dynamic memory allocator (malloc, new, et c.) starts at the end of memory and works backwards.
Explaining how a stack grows and shrinks is a bi...
Semicolon before self-invoking function? [duplicate]
...
I write all JavaScript in a semicolon-free style. When writing without semicolons at the end of every line, due to Automatic Semicolon Insertion (ASI), there are a few special cases that can "be confusing" at first:
Starting a top-level expression with an opera...