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What's the point of having pointers in Go?
... reasons. Pointers allow control over memory layout (affects efficiency of CPU cache). In Go we can define a structure where all the members are in contiguous memory:
type Point struct {
x, y int
}
type LineSegment struct {
source, destination Point
}
In this case the Point structures are em...
Why do you not use C for your web apps?
... also made it possible to process more static content - with less powerful CPUs (ANSI C is not only about making dynamic contents fly).
By the way, G-WAN uses C scripts (no C compiler and linker needed) so the compiling/linking cycle/delay does not exist.
In the process of comparing G-WAN to .NET ...
Why is volatile needed in C?
...e the variable as volatile, at run time that certain variable is loaded to CPU registers not in memory?
– Amit Singh Tomar
Mar 17 '15 at 16:34
1
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PostgreSQL - fetch the row which has the Max value for a column
...xxx_cost values), which is a weighed function estimate of required I/O and CPU resources; you can obtain this by firing up PgAdminIII and running "Query/Explain (F7)" on the query with "Query/Explain options" set to "Analyze"
Quassnoy's query has a cost estimate of 745k (!), and completes in 1.3 s...
Method names for getting data [closed]
...re lengthy access that involves transfer of data from place to place (a-la CPU fetching) or database fetching. For instance, Hibernate's query language has a Fetch construct. Developers often use methods based on their expectations of the name rather than by reading documentation so avoiding sending...
HTTP vs HTTPS performance
...
The overhead is NOT due to the encryption. On a modern CPU, the encryption required by SSL is trivial.
The overhead is due to the SSL handshakes, which are lengthy and drastically increase the number of round-trips required for a HTTPS session over a HTTP one.
Measure (using a ...
Encapsulation vs Abstraction?
...f you go down all the way to the raw silicon, the people who designed your CPU did so using circuit diagrams written in terms of "diodes" and "transistors", which are abstractions of how electrons travel through semiconductor crystals.
In software, everything is an abstraction. We build programs wh...
Why start an ArrayList with an initial capacity?
... tell ArrayList to allocate a larger storage to begin with as to not waste CPU cycles when it tries to allocate more space for the next item. Thus to allocate some space at the beginning is more effiecient.
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Casting vs using the 'as' keyword in the CLR
...ast:2135, Is And As:2145, As And null check: 1961,specs: OS:Windows Seven, CPU:i5-520M, 4GB of DDR3 1033 ram, benchmark on array of 128,000,000 items.
– Behrooz
Jun 25 '10 at 13:32
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What is the list of possible values for navigator.platform as of today? [closed]
...his definition is a bit vague. A decade ago a 'platform' would either be a CPU architecture or an operating system. In recent years handheld and media devices can be platforms too.
The interpretation
As with everything on the web, our fate is in the hands of the mighty browser vendors. In this case...