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An item with the same key has already been added
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In C#, say, if you have variable1 and Variable1 (it'll throw the error). Also, check to make sure there's no similar edmx names (table column has "CURRENCY", one of Navigation Properties name had "Currency")
– Robert Koch
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How to enumerate a range of numbers starting at 1
...o do in Python 2.6 or newer:
enumerate(range(2000, 2005), 1)
Python 2.5 and older do not support the start parameter so instead you could create two range objects and zip them:
r = xrange(2000, 2005)
r2 = xrange(1, len(r) + 1)
h = zip(r2, r)
print h
Result:
[(1, 2000), (2, 2001), (3, 2002), ...
Global variables in Java
... public static int a;
public static int b;
}
now you can access a and b from anywhere
by calling
Example.a;
Example.b;
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How to get the function name from within that function?
...str(0, ret.indexOf('('));
return ret;
}
Using Function.caller is non-standard. Function.caller and arguments.callee are both forbidden in strict mode.
Edit: nus's regex based answer below achieves the same thing, but has better performance!
In ES6, you can just use myFunction.name.
Note: Bewa...
Get protocol + host name from URL
... is not domain: try urlparse.urlparse('http://user:pass@example.com:8080') and find it gives parts like 'user:pass@' and ':8080'
– starrify
Oct 21 '14 at 8:02
23
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Occurrences of substring in a string
...at this might or might not return the result expected. With substring "aa" and string to search "aaa" the number of occurences expected may be one (returned by this code), but may be two as well (in this case you'll need "lastIndex++" instead of "lastIndex += findStr.length()") depending on what you...
Which annotation should I use: @IdClass or @EmbeddedId
...fication has 2 different ways to specify entity composite keys: @IdClass and @EmbeddedId .
7 Answers
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Passing a Bundle on startActivity()?
... value = getIntent().getExtras().getString(key)
NOTE: Bundles have "get" and "put" methods for all the primitive types, Parcelables, and Serializables. I just used Strings for demonstrational purposes.
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Get size of folder or file
...using the listFiles() method of a file object that represents a directory) and accumulate the directory size for yourself:
public static long folderSize(File directory) {
long length = 0;
for (File file : directory.listFiles()) {
if (file.isFile())
length += file.length(...
What is the most ridiculous pessimization you've seen? [closed]
...ence.
Our new environment was 32-bit Sparc Solaris.
One of the guys went and changed all ints to shorts to speed up our code, since grabbing 16 bits from RAM was quicker than grabbing 32 bits.
I had to write a demo program to show that grabbing 32-bit values on a 32-bit system was faster than gra...