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What is the effect of extern “C” in C++?
...age to each individual declaration/definition explicitly or use a block to group a sequence of declarations/definitions to have a certain linkage:
extern "C" void foo(int);
extern "C"
{
void g(char);
int i;
}
If you care about the technicalities, they are listed in section 7.5 of the C++03 st...
Why are mutable structs “evil”?
...es (like the X and Y coordinates of a point) which have no "identity" as a group. Structs which are used for that purpose should generally expose their variables as public fields. I would consider the notion that it's more appropriate to use a class than a struct for such purposes to be just plain...
Non-Relational Database Design [closed]
... In the thread Data Design in Non-Relational Databases of the NOSQL Google group the different paradigms are categorized like this:
Bigtable-like systems (HBase,
Hypertable, etc)
Key-value stores (Tokyo, Voldemort,
etc)
Document databases (CouchDB,
MongoDB, etc)
Graph databases (AllegroGraph,
Neo4...
In HTML5, should the main navigation be inside or outside the element?
...it.
It terms of the implicit use of NAV you can use it anywhere there is grouped site navigation, although it's usually omitted from the "footer" section for mini-navs / important site links.
Really it comes down to personal / team choice. Decide what you and your team feel is more semantic and ...
Patterns for handling batch operations in REST web services?
...esting system to solve this problem (see here).
What they do is basically grouping different requests in one Content-Type: multipart/mixed request, with each individual complete request separated by some defined delimiter. Headers and query parameter of the batch request are inherited to the indivi...
How can you use an object's property in a double-quoted string?
...on and Argument mode (see about_Parsing). Commands are parsed into tokens (groups of characters forming a meaningful string). Space separates tokens that would merge but is otherwise ignored. If the command's 1st token is a number, variable, statement keyword (if, while, etc), unary operator, {, etc...
How does database indexing work? [closed]
...lem of increased cost of time. This requires definition of additional file groups with according files on the desired hard disks and definition of table/index location as desired.
Another problem with indexes is their fragmentation over time as data is inserted. REORGANIZE helps, you must write rou...
Is R's apply family more than syntactic sugar?
...antial, like when you have to nest for-loops to get the average based on a grouping of more than one factor. Here you have two approaches that give you the exact same result :
set.seed(1) #for reproducability of the results
# The data
X <- rnorm(100000)
Y <- as.factor(sample(letters[1:5],10...
How does LMAX's disruptor pattern work?
...rom ConsumerCallId to received in changeId can be consumed in batch.
If a group of consumers read together (the ones with shared id generator), each one only takes a single callId, and only the slot for that single callId is checked and returned.
...
Named colors in matplotlib
...w of the available colors from the posted image. I prefer the colors to be grouped with similar colors, so I slightly tweaked the matplotlib answer that was mentioned in a comment above to get a color list sorted in columns. The order is not identical to how I would sort by eye, but I think it gives...