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Haskell: Lists, Arrays, Vectors, Sequences
...VU; main = print (VU.cons 'a' (VU.replicate 100 'b')) compiles to a single allocation of 404 bytes (101 chars) in Core: hpaste.org/65015
– FunctorSalad
Mar 9 '12 at 6:11
...
Is there ever a time where using a database 1:1 relationship makes sense?
...ty is the capital of a country, for example.
Some kinds of scarce resource allocation, e.g. one employee can be assigned only one company car at a time (e.g. one truck per trucker, one taxi per cab driver, etc.). A colleague gave me this example recently.
Marriage (at least in legal jurisdictions wh...
How do I connect to this localhost from another computer on the same network?
...pretend you have a router (192.168.1.1). This router has a DHCP server and allocates IP addresses to 100 machines on the network.
Now, let's say you have, same as above, on the same network, a machine at 192.168.1.5 which has your website. We will call that machine pompei.
$ echo $HOSTNAME
pompei
...
Pointer expressions: *ptr++, *++ptr and ++*ptr
... but toggling my accepted answer. :) Thanks again.
– allocated
Aug 28 '13 at 17:07
26
+1 I think ...
Why covariance and contravariance do not support value type
...inter) contiguously in memory; the objects being pointed to are separately allocated.
The other (related) issue(*) is that (almost) all Reference types have the same representation for variance purposes and much code does not need to know of the difference between types, so co- and contra-variance...
What is a ViewModelLocator and what are its pros/cons compared to DataTemplates?
...ch property is going to be an instance of the view model that I'm going to allocate on my view. I can check if the code is running in design mode or not using DesignerProperties.GetIsInDesignMode. This allows me to use a mock model during designing time and the real object when I'm running the appli...
When do I use a dot, arrow, or double colon to refer to members of a class in C++?
...how to use them. And where I said -> can only be used by a pointer that allocated on the heap by new? Below, the second item, I think I really make it clear that -> is for pointer. And before you downvote, you better try className::non_static_member_function() with c++14 by yourself. Referenc...
stringstream, string, and char* conversion confusion
...the temporary string const, because any changes to it might cause it to re-allocate and thus render cstr invalid. It is therefor safer to not to store the result of the call to str() at all and use cstr only until the end of the full expression:
use_c_str( stringstream.str().c_str() );
Of course,...
What are the use cases for selecting CHAR over VARCHAR in SQL?
...user comes along later and puts more data into that column SQL has already allocated space for it and in it goes.
Another reason to use CHAR is similar to the second reason. If a programmer or user does a "batch" update to millions of rows, adding some sentence to a note field for example, you won'...
What are the differences between a multidimensional array and an array of arrays in C#?
...which is the base address of the array.
A multidimensional array therefore allocates a continuous memory block, while a jagged array does not have to be square, e.g. jagged[1].Length does not have to equal jagged[2].Length, which would be true for any multidimensional array.
Performance
Performance ...