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How do short URLs services work?
...n the database, they find a description (sometimes), your name (sometimes) and the real URL. Then they issue a redirect, which is a HTTP 302 response and the target URL in the header.
This direct redirect is important. If you were to use files or first load HTML and then redirect, the browser would...
What is “:-!!” in C code?
... effect, a way to check whether the expression e can be evaluated to be 0, and if not, to fail the build.
The macro is somewhat misnamed; it should be something more like BUILD_BUG_OR_ZERO, rather than ...ON_ZERO. (There have been occasional discussions about whether this is a confusing name.)
You...
SQL Server: What is the difference between CROSS JOIN and FULL OUTER JOIN?
What is the difference between CROSS JOIN and FULL OUTER JOIN in SQL Server?
10 Answers
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How to prevent Browser cache for php site
...dd new files css, js or images the browser is loading the same old js, css and image files stored in cache.
5 Answers
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When should I use a struct rather than a class in C#?
When should you use struct and not class in C#? My conceptual model is that structs are used in times when the item is merely a collection of value types . A way to logically hold them all together into a cohesive whole.
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Difference between == and ===
In swift there seem to be two equality operators: the double equals ( == ) and the triple equals ( === ), what is the difference between the two?
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How to make git-diff and git log ignore new and deleted files?
...ometimes there's a couple of changed files together with some new, deleted and/or renamed files. When doing git diff or git-log I'd like to omit them, so I can better spot the modifications.
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Binary search (bisection) in Python
Is there a library function that performs binary search on a list/tuple and return the position of the item if found and 'False' (-1, None, etc.) if not?
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Does PHP have threading?
... found this PECL package called threads , but there is not a release yet. And nothing is coming up on the PHP website.
13 ...
Event system in Python
...raries to choose from, using very different terminology (events, signals, handlers, method dispatch, hooks, ...).
I'm trying to keep an overview of the above packages, plus the techniques mentioned in the answers here.
First, some terminology...
Observer pattern
The most basic style of event system ...