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Android Log.v(), Log.d(), Log.i(), Log.w(), Log.e() - When to use each one?
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Let's go in reverse order:
Log.e: This is for when bad stuff happens. Use this tag in places like inside a catch statement. You know that an error has occurred and therefore you're logging an error.
Log.w: Use this when you suspect something s...
How can I change CSS display none or block property using jQuery?
How can I change CSS display none or block property using jQuery?
14 Answers
14
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PostgreSQL naming conventions
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Regarding tables names, case, etc, the prevalent convention is:
SQL keywords: UPPER CASE
names (identifiers): lower_case_with_underscores
For example:
UPDATE my_table SET name = 5;
This is not written in stone, but the bit about identifiers in lower case is highly recommended, IMO. Postgresq...
Pickle or json?
...ements (e.g. you are just going to use the data with Python) and a binary format is fine, go with cPickle which gives you really fast Python object serialization.
If you want interoperability or you want a text format to store your data, go with JSON (or some other appropriate format depending on y...
In a URL, should spaces be encoded using %20 or +? [duplicate]
In a URL, should I encode the spaces using %20 or + ? For example, in the following example, which one is correct?
6 Ans...
Difference in System. exit(0) , System.exit(-1), System.exit(1 ) in Java
...parameter of exit should qualify if the execution of the program went good or bad. It's a sort of heredity from older programming languages where it's useful to know if something went wrong and what went wrong.
Exit code is
0 when execution went fine;
1, -1, whatever != 0 when some error occurred...
What is N-Tier architecture?
... a few developer job postings recently that include a sentence that reads more or less like this: "Must have experience with N-Tier architecture", or "Must be able to develop N-Tier apps".
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'AND' vs '&&' as operator
I have a codebase where developers decided to use AND and OR instead of && and || .
10 Answers
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How to close tag properly?
Which one(s) of them is correct?
7 Answers
7
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Why does JQuery have dollar signs everywhere?
I am working on a project with quite a lot of JQuery in it. The JQuery has a lot of $ signs everywhere, for example
7 Answ...