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Explanation of JSONB introduced by PostgreSQL
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First, hstore is a contrib module, which only allows you to store key => value pairs, where keys and values can only be texts (however values can be sql NULLs too).
Both json & jsonb allows you to store a valid JSON value (defined in its spec).
F.ex. these are v...
Get class name using jQuery
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this.id // for IDs
Both are standard DOM methods and well supported in all browsers.
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How to see the changes in a Git commit?
...that can be recursively dereferenced to a commit object. The following are all commit-ishes: a commit object, a tag object that points to a commit object, a tag object that points to a tag object that points to a commit object, etc.
See gitrevision "SPECIFYING REVISIONS" to reference a commit-ish....
Fundamental difference between Hashing and Encryption algorithms
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They provide a mapping between an arbitrary length input, and a (usually) fixed length (or smaller length) output. It can be anything from a simple crc32, to a full blown cryptographic hash function such as MD5 or SHA1/2/256/512. The point is that there's a one-way mapping going on. It's a...
Multiple arguments vs. options object
...bject to a function instead of passing a long list of parameters, but it really depends on the exact context.
I use code readability as the litmus test.
For instance, if I have this function call:
checkStringLength(inputStr, 10);
I think that code is quite readable the way it is and passing ind...
How can I use “.” as the delimiter with String.split() in java [duplicate]
What I am trying to do is read a .java file, and pick out all of the identifiers and store them in a list. My problem is with the .split() method. If you run this code the way it is, you will get ArrayOutOfBounds, but if you change the delimiter from "." to anything else, the code works. But I ne...
Reduce git repository size
... do I reduce my repo size...it's about 10 MB, but the thing is Heroku only allows 50 MB and I'm no where near finished developing my app.
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What does this symbol mean in IntelliJ? (red circle on bottom-left corner of file name, with 'J' in
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click the directory and click the Sources button
It's weird because usually it's done automatically. Maybe it's better if you recreate the project again.
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Eclipse compilation error: The hierarchy of the type 'Class name' is inconsistent
...tting compiled. In my case I knew the superclass existed, but it wasnt actually getting compiled properly.
– Joseph Rajeev Motha
Mar 21 '14 at 2:53
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EProgrammerNotFound exception in Delphi?
...e compiler for one of the most common errors with a similar message. Internally we've always joked and poked fun at different things and people (mostly on the team itself). If you don't have a sense of humor, you're destined to an early grave.
It was a simple conversation;
"Oh, you should have ra...