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How do the Proxy, Decorator, Adapter, and Bridge Patterns differ?
... looking at the Proxy Pattern, and to me it seems an awful lot like the Decorator, Adapter, and Bridge patterns. Am I misunderstanding something? What's the difference? Why would I use the Proxy pattern versus the others? How have you used them in the past in real world projects?
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Is REST DELETE really idempotent?
... system after the request has completed
In all cases (apart from the error issues - see below), the account no longer exists.
From here
"Methods can also have the property of
"idempotence" in that (aside from
error or expiration issues) the
side-effects of N > 0 identical
request...
Better explanation of when to use Imports/Depends
...ng R Extensions " manual provides the following guidance on when to use Imports or Depends:
4 Answers
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How do you represent a JSON array of strings?
This is all you need for valid JSON, right?
4 Answers
4
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How to update a git clone --mirror?
I have created a git repository to mirror a live site (which is a non-bare git repository):
3 Answers
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Hexadecimal To Decimal in Shell Script
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To convert from hex to decimal, there are many ways to do it in the shell or with an external program:
With bash:
$ echo $((16#FF))
255
with bc:
$ echo "ibase=16; FF" | bc
255
with perl:
$ perl -le 'print hex("FF");'
255
with printf :
$ printf "%d\n" 0xFF
255
with python:
$ python -c ...
What is the email subject length limit?
...wed to be in the subject line of Internet email?
I had a scan of The RFC for email but could not see specifically how long it was allowed to be.
I have a colleague that wants to programmatically validate for it.
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Converting string to byte array in C#
... to know what type of encoding was used to make it into that byte array.
For example, if the byte array was created like this:
byte[] bytes = Encoding.ASCII.GetBytes(someString);
You will need to turn it back into a string like this:
string someString = Encoding.ASCII.GetString(bytes);
If you...
How to sort git tags by version string order of form rc-X.Y.Z.W?
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Use version sort
git tag -l | sort -V
or for git version >= 2.0
git tag -l --sort=v:refname
git tag -l --sort=-v:refname # reverse
share
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Enum type constraints in C# [duplicate]
...nts, tests, documents and ships the feature. So far, no one has done that for this one. There's no particularly unusual reason why not; we have lots of other things to do, limited budgets, and this one has never made it past the "wouldn't this be nice?" discussion in the language design team.
The C...