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How do I choose between Semaphore and SemaphoreSlim?
... system-wide. This would mean that a SemaphoreSlim could not be used for cross-process synchronization.
The MSDN documentation also indicates that SemSlim should be used when "wait times are expected to be very short". That would usually dovetail nicely with the idea that the slim version is more l...
Why use Ruby instead of Smalltalk? [closed]
... Smalltalk did substantially address the insularity.
The class library of most of the main smalltalk implementations (VisualWorks, VisualAge etc.) was large and had reputation for a fairly steep learning curve. Most key functionality in Smalltalk is hidden away somewhere in the class library, even ...
git-diff to ignore ^M
...s contains ^M as newline separators. Diffing these files are apparently impossible, since git-diff sees it as the entire file is just a single line.
...
When and why I should use session_regenerate_id()?
... is identified by his session id.
// User orders items
$shopcart->add('123', 20);
$shopcart->add('124', 18);
$shopcart->add('127', 5);
For each product added, a record is made in my shopcart table. Also identified by the session id.
// User saves cart in order to use it later
$shopcart-...
If unit testing is so great, why aren't more companies doing it? [closed]
... then -- I have no idea what our code coverage was like and I was writing most of the unit tests. Since then I've run into some companies that do lots of testing, but it's chair testing: relies on a person being there, has low repeatibility and low chance of catching bugs. The other attitude is: it ...
How to create a new (and empty!) “root” branch?
...
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What does “%.*s” mean in printf?
...
123
You can use an asterisk (*) to pass the width specifier/precision to printf(), rather than har...
select * vs select column
If I just need 2/3 columns and I query SELECT * instead of providing those columns in select query, is there any performance degradation regarding more/less I/O or memory?
...
How do I correctly clone a JavaScript object?
...(JSON.stringify(object)):
const a = {
string: 'string',
number: 123,
bool: false,
nul: null,
date: new Date(), // stringified
undef: undefined, // lost
inf: Infinity, // forced to 'null'
}
console.log(a);
console.log(typeof a.date); // Date object
const clone = JSON...
How does a garbage collector avoid an infinite loop here?
...minated and the process will terminate. These are old values though so Microsoft might have tweaked the actual numbers or even the whole algorithm by now. Se blog.stephencleary.com/2009/08/finalizers-at-process-exit.html
– Lasse V. Karlsen
Jul 9 '14 at 19:52
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