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What is the correct way of using C++11's range-based for?
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406
Let's start differentiating between observing the elements in the container
vs. modifying them...
Getting all names in an enum as a String[]
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20 Answers
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Google Maps V3 - How to calculate the zoom level for a given bounds
...same fraction of the width of the map (the angle difference in degrees / 360). At zoom zero, the whole world map is 256x256 pixels, and zooming each level doubles both width and height. So after a little algebra we can calculate the zoom as follows, provided we know the map's width in pixels. Note t...
How do I get the size of a java.sql.ResultSet?
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Do a SELECT COUNT(*) FROM ... query instead.
OR
int size =0;
if (rs != null)
{
rs.last(); // moves cursor to the last row
size = rs.getRow(); // get row id
}
In either of the case, you won't have to loop over the entire data.
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In C#, how do I calculate someone's age based on a DateTime type birthday?
...Now it's much faster.
– JAG
Jan 22 '09 at 10:29
106
Given we're talking birthdays you can just us...
Interview question: Check if one string is a rotation of other string [closed]
...nk there are.)
– Jon Skeet
Mar 31 '10 at 14:55
6
You can also use (s1+s1).contains(s2) in Java.
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Does :before not work on img elements?
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answered Apr 30 '11 at 16:21
cwharriscwharris
16.5k44 gold badges4040 silver badges6161 bronze badges
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What are the best practices to follow when declaring an array in Javascript?
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260
Mostly, people use var a = [] because Douglas Crockford says so.
His reasons include the non-in...
Which is better in python, del or delattr?
...second. del foo.bar compiles to two bytecode instructions:
2 0 LOAD_FAST 0 (foo)
3 DELETE_ATTR 0 (bar)
whereas delattr(foo, "bar") takes five:
2 0 LOAD_GLOBAL 0 (delattr)
3 LOAD_FAST 0 (f...