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What is so bad about singletons? [closed]
...The problem is (as I see it), that the things that Singleton brings to the table in these cases are irrelevant. (Construct-on-first-use is trivial to implement in a non-singleton, for example, even if it's not actually using the constructor to do it.)
– dash-tom-bang
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Limit file format when using ?
...ignature (ASP.NET, PHP, Ruby, Java). You might also want to refer to these tables for file types and their magic numbers, to perform a more robust server-side verification.
Here are three good reads on file-uploads and security.
EDIT: Maybe file type verification using its binary signature can also...
Learning to write a compiler [closed]
...tom half will take your intermediate representation and generate a PE executable.
Some books on this topic that I found particularly helpful was Compilers Principles and Techniques (or the Dragon Book, due to the cute dragon on the cover). It's got some great theory and definitely covers Context...
Redis - Connect to Remote Server
...stening where you expect, check your config file just to be sure.
After establishing it is listening where you expect it to, from a remote node which should have access try:
redis-cli -h REMOTE.HOST ping
You could also try that from the local host but use the IP you expect it to be listening on ...
What is the purpose of the var keyword and when should I use it (or omit it)?
...ready started rolling support for strict mode. See, for example, my compat table.
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Django filter queryset __in for *every* item in list
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This would we slower if you work with large tables and large data to compare to. (like 1 Million each)
– gies0r
May 21 '18 at 16:11
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When and why I should use session_regenerate_id()?
...t;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->save();
The user decided to save his cart. It is now being attached to his user id.
// Regenerate session id for user to ...
Is Meyers' implementation of the Singleton pattern thread safe?
...d to as "Magic Statics" in the "C++11 Core Language Features: Concurrency" table here: msdn.microsoft.com/en-us/library/vstudio/hh567368.aspx
– olen_garn
Mar 27 '13 at 16:41
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How to see the CREATE VIEW code for a view in PostgreSQL?
...nd-version (without resorting pg_get_viewdef at all) can, which is more portable, e.g. to Perl with DBI.
– Jinxed
Jul 23 '15 at 16:34
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Caching a jquery ajax response in javascript/browser
...onsole for debugging.
You can clear the cache on any given page via
jSQL.tables = {}; jSQL.persist();
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