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LogCat message: The Google Play services resources were not found. Check your project configuration
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maybe you can ignore, but I keep getting into a code that doesn't exist, each time I choose to debug the app.
– android developer
Jun 19 '14 at 17:13
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ViewPager and fragments — what's the right way to store fragment's state?
...ter.getItem(int position) is only called when a fragment for that position does not exist. After rotating, Android will notice that it already created/saved a fragment for this particular position and so it simply tries to reconnect with it with FragmentManager.findFragmentByTag(), instead of creati...
Get decimal portion of a number with JavaScript
....floor(n)
Although this won't work for minus numbers so we might have to do
n = Math.abs(n); // Change to positive
var decimal = n - Math.floor(n)
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How do I specify a password to 'psql' non-interactively?
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From the official documentation:
It is also convenient to have a ~/.pgpass file to avoid regularly having to type in passwords. See Section 30.13 for more information.
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This file should contain lines of the following format:
hos...
How do I find a “gap” in running counter with SQL?
... WHERE mi.id = mo.id + 1
)
Systems supporting sliding window functions:
SELECT -- TOP 1
-- Uncomment above for SQL Server 2012+
previd
FROM (
SELECT id,
LAG(id) OVER (ORDER BY id) previd
FROM mytable
) q
WHERE previ...
NoSQL - MongoDB vs CouchDB [closed]
...MongoDB and CouchDB. I know there are differences between the two. Which do you recommend learning as a first step into the NoSQL world?
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How do I vertically center text with CSS? [duplicate]
...lay
And here is another option, which may not work on older browsers that don't support display: table and display: table-cell (basically just Internet Explorer 7). Using CSS we simulate table behavior (since tables support vertical alignment), and the HTML is the same as the second example:
d...
C pointers : pointing to an array of fixed size
...-array parameter
void foo(char (*p)[10]);
(in C++ language this is also done with references
void foo(char (&p)[10]);
).
This will enable language-level type checking, which will make sure that the array of exactly correct size is supplied as an argument. In fact, in many cases people use...
When NOT to use yield (return) [duplicate]
... the outer iterator will then make O(h) nested calls to MoveNext. Since it does this O(n) times for a tree with n items, that makes the algorithm O(hn). And since the height of a binary tree is lg n <= h <= n, that means that the algorithm is at best O(n lg n) and at worst O(n^2) in time, and...
Best way to include CSS? Why use @import?
...file should almost never be used, as it can prevent stylesheets from being downloaded concurrently. For instance, if stylesheet A contains the text:
@import url("stylesheetB.css");
then the download of the second stylesheet may not start until the first stylesheet has been downloaded. If, on the ...