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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...
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...
What is a “feature flag”?
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A 'feature flag' (or Feature Toggle) is the ability to turn features (sub-sections) of your application on/off at easily:
perhaps via a re-deploy, or
some internal page where pages/features can be toggled live.
I guess the example there w...
What's the difference between passing by reference vs. passing by value?
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First and foremost, the "pass by value vs. pass by reference" distinction as defined in the CS theory is now obsolete because the technique originally defined as "pass by reference" has since fallen out of favor and is seldom used now.1...