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What exactly does Perl's “bless” do?
...e is no subroutine foo in package "Class", a list of other packages (taken form the array @ISA in the package "Class") will be searched and the first subroutine foo found will be called.
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What is the difference between concurrency and parallelism?
...t exists when at least two threads are making progress. A more generalized form of parallelism that can include time-slicing as a form of virtual parallelism.
Parallelism: A condition that arises when at least two threads are executing simultaneously.
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How do I set a cookie on HttpClient's HttpRequestMessage
... api's HttpClient to do a post to an endpoint that requires login in the form of an HTTP cookie that identifies an account (this is only something that is #ifdef 'ed out of the release version).
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REST API Best practice: How to accept list of parameter values as input [closed]
...mmunity input on best practices around how we should have input parameters formatted:
6 Answers
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All falsey values in JavaScript
...ues in JavaScript
false
Zero of Number type: 0 and also -0, 0.0, and hex form 0x0 (thanks RBT)
Zero of BigInt type: 0n and -0n (new in 2020, thanks GetMeARemoteJob)
"", '' and `` - strings of length 0
null
undefined
NaN
document.all (in HTML browsers only)
This is a weird one. document.all is a...
fastest MD5 Implementation in JavaScript
...e writing his implementation. It's a good read for anyone interested in performant javascript.
http://www.webreference.com/programming/javascript/jkm3/
His MD5 implementation can be found here
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What is the difference between UTF-8 and Unicode?
...(7 bits). With 26 letters in the alphabet, both in capital and non-capital form, numbers and punctuation signs, that worked pretty well. ASCII got extended by an 8th bit for other, non-English languages, but the additional 128 numbers/code points made available by this expansion would be mapped to d...
The case against checked exceptions
...pty())
and it will be painful to have to wrap in try/catch every time.
Informing the User:
Checked exceptions should be used in cases where you can imagine a useful error message being presented to the end user.
This is the "and what will you do when it happens?" question I raised above. It also...
Why does Date.parse give incorrect results?
...ired to parse their output for Date#toString and Date#toUTCString, but the format of those strings was not specified.
As of ECMAScript 2019 (edition 9) the format for Date#toString and Date#toUTCString, have been specified as (respectively):
ddd MMM DD YYYY HH:mm:ss ZZ [(timezone name)]e.g. Tue J...
What are the minimum margins most printers can handle?
... Very often HP used 1/3, 1/2 inch or more (like "24 24 588 768" for Letter format). I remember having hacked HP PPDs and tuned them down to "6 6 606 786" (1/12 inch) before the physical boundaries of the device kicked in and enforced a real clipping of the page image.
Now, PCL and other language pr...