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For-each over an array in JavaScript
...or loop,
or for-in with safeguards.
But there's lots more to explore, read on...
JavaScript has powerful semantics for looping through arrays and array-like objects. I've split the answer into two parts: Options for genuine arrays, and options for things that are just array-like, such as the a...
How to implement the activity stream in a social network
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Publish the activity IDs to Redis whenever an activity record is created, adding the ID to an "activity stream" list for every user who is a friend/subscriber that should see the activity.
Query Redis to get the activity stream for any user and then grab the related data from the db as needed. ...
HTML: Include, or exclude, optional closing tags?
... tags (unless I have a very good reason not to) because it lends to more readable and updateable code.
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How to use unicode characters in Windows command line?
...e” are unrelated factors. CMD.exe is a just one of programs which are ready to “work inside” a console (“console applications”).
AFAIK, CMD has perfect support for Unicode; you can enter/output all Unicode chars when any codepage is active.
Windows’ console has A LOT of support for Un...
How can I set the Secure flag on an ASP.NET Session Cookie?
... edited Jun 2 '17 at 8:07
Tadas Šukys
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answered Sep 18 '09 at 6:53
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How to save traceback / sys.exc_info() values in a variable?
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macmac
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How can I avoid Java code in JSP files, using JSP 2?
...EL (Expression Language, those ${} things) way back in 2001.
The major disadvantages of scriptlets are:
Reusability: you can't reuse scriptlets.
Replaceability: you can't make scriptlets abstract.
OO-ability: you can't make use of inheritance/composition.
Debuggability: if scriptlet throws an exc...
Is SQL or even TSQL Turing Complete?
... solve problems.
The interesting thing to note is that CTE was not really added to turn SQL into a programming language -- just to turn a declarative querying language into a more powerful declarative querying language. Sort of like in C++, whose templates turned out to be Turing complete even thou...
nginx upload client_max_body_size issue
I'm running nginx/ruby-on-rails and I have a simple multipart form to upload files.
Everything works fine until I decide to restrict the maximum size of files I want uploaded.
To do that, I set the nginx client_max_body_size to 1m (1MB) and expect a HTTP 413 (Request Entity Too Large) status in...
Why is unsigned integer overflow defined behavior but signed integer overflow isn't?
...);
— the sign bit has the value −(2N − 1) (one’s complement).
Nowadays, all processors use two's complement representation, but signed arithmetic overflow remains undefined and compiler makers want it to remain undefined because they use this undefinedness to help with optimization. See fo...