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Difference between binary semaphore and mutex
...ion semaphores are used to protect shared resources (data structure, file, etc..).
A Mutex semaphore is "owned" by the task that takes it. If Task B attempts to semGive a mutex currently held by Task A, Task B's call will return an error and fail.
Mutexes always use the following sequence:
...
Is gettimeofday() guaranteed to be of microsecond resolution?
... a pretty wide array of boxes, everything from 2-8 cores.
Of course, YMMV, etc, but it seems to be a reliable and low-overhead
(because it doesn't make a context switch into system-space) method
of timing.
Generally how it works is:
declare the block of code to be assembler (and volatile, so the
...
How can I list (ls) the 5 last modified files in a directory?
... format
-h makes output human readable (i.e. file sizes appear in kb, mb, etc.)
-t sorts output by placing most recently modified file first
head -6 will show 5 files because ls prints the block size in the first line of output.
I think this is a slightly more elegant and possibly more useful ap...
Making a property deserialize but not serialize with json.net
...
This results in correct deserialization using default settings/resolvers/etc., but the property is stripped from serialized output.
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When to use Task.Delay, when to use Thread.Sleep?
...e quite heavy whereas the cooperative multi-tasking provided by Task.Delay etc is designed to avoid all of that overhead, maximize throughput, allow cancellation, and provide cleaner code.
– Corillian
May 3 '16 at 16:06
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Find running median from a stream of integers
...riance of the input is statistically distributed (e.g. normal, log-normal, etc.) then reservoir sampling is a reasonable way of estimating percentiles/medians from an arbitrarily long stream of numbers.
int n = 0; // Running count of elements observed so far
#define SIZE 10000
int reservoir[SIZE...
Search code inside a Github project
...else in a different way. For example, (after setting the Code dropdown, etc, as above) try the same search with: repo:wordpress/wordpress vs repo:WordPress/WordPress ... only the first one will yield results.
– ethanpil
Jan 11 '13 at 0:36
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__proto__ VS. prototype in JavaScript
... is the actual object that is used in the lookup chain to resolve methods, etc. prototype is the object that is used to build __proto__ when you create an object with new:
( new Foo ).__proto__ === Foo.prototype;
( new Foo ).prototype === undefined;
...
Difference between Inheritance and Composition
...at can be fueled, regardless of whether it's a car, boat, stove, barbecue, etc. Interfaces mandate that classes that say they implement that interface actually have the methods that that interface is all about. For example,
iFuelable Interface:
void AddSomeFuel()
void UseSomeFuel()
int...
Does Git Add have a verbose switch
...sole as it means a smaller tooling footprint if I ever need to change PCs, etc.
4 Answers
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