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python max function using 'key' and lambda expression
...function, it is equivalent to:
def func(p):
return p.totalScore
Now max becomes:
max(players, key=func)
But as def statements are compound statements they can't be used where an expression is required, that's why sometimes lambda's are used.
Note that lambda is equivalent to what you...
Why is the asterisk before the variable name, rather than after the type?
...* c * d
* e * f * g;
Here *e would be misleading, wouldn't it?
Okay, now what does the following line actually mean:
int *a;
Most people would say:
It means that a is a pointer to an int value.
This is technically correct, most people like to see/read it that way and that is the way how m...
Embedding Python in an iPhone app
So it's a new millennium; Apple has waved their hand; it's now legal to include a Python interpreter in an iPhone (App Store) app.
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warning: [options] bootstrap class path not set in conjunction with -source 1.5
...rm name will be set to JDK1.7. Just click Finish and you're done.
You can now select the Java platform in the project properties. By selecting JDK1.7 and running Clean and Build: no more warnings. :-)
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Find XOR of all numbers in a given range
...bits cycle every 4. So, that's how to arrive at that little lookup table.
Now, consider for a general range of [a,b]. We can use f() to find the XOR for [0,a-1] and [0,b]. Since any value XOR'd with itself is zero, the f(a-1) just cancels out all the values in the XOR run less than a, leaving you w...
Hibernate throws MultipleBagFetchException - cannot simultaneously fetch multiple bags
...propriate. I think that makes the difference in hibernate, though I don't know why.
– fool4jesus
Dec 6 '12 at 19:38
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VS2012 return to a normal TFS checkin window?
... seems to remove the popup window for TFS check-ins that was in VS2010. It now seems to take over the team explorer tab in my sidebar, and buries the important things - like which files I've changed. Is there any way to return to a normal popup window for check-ins in VS2012?
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Rails: How does the respond_to block work?
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No kidding. If you already know how to code, rails might not be for you :-P
– Limited Atonement
Sep 15 at 15:46
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How to delete a row by reference in data.table?
...ated to assignment by reference versus copying in data.table . I want to know if one can delete rows by reference, similar to
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What does 'synchronized' mean?
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Great example, it is good to know theory, but the code is always more specific and complete.
– Santi Iglesias
Sep 8 '16 at 6:15
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