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Checking if all elements in a list are unique
What is the best way (best as in the conventional way) of checking whether all elements in a list are unique?
14 Answers
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Clearing a string buffer/builder after loop
How do you clear the string buffer in Java after a loop so the next iteration uses a clear string buffer?
8 Answers
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What is the size of an enum in C?
I'm creating a set of enum values, but I need each enum value to be 64 bits wide. If I recall correctly, an enum is generally the same size as an int; but I thought I read somewhere that (at least in GCC) the compiler can make the enum any width they need to be to hold their values. So, is it possib...
Find the most common element in a list
...er an obvious one (for non-hashable but comparable elements) -- [itertools.groupby][1]. itertools offers fast, reusable functionality, and lets you delegate some tricky logic to well-tested standard library components. Consider for example:
import itertools
import operator
def most_common(L):
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How to check if a specific key is present in a hash or not?
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How do I create a transparent Activity on Android?
...windowIsTranslucent">true</item>
<item name="android:windowBackground">@android:color/transparent</item>
<item name="android:windowContentOverlay">@null</item>
<item name="android:windowNoTitle">true</item>
<item name="android:windowIsF...
linq query to return distinct field values from a list of objects
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objList.Select(o=>o.typeId).Distinct()
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A html space is showing as %2520 instead of %20
Passing a filename to the firefox browser causes it to replace spaces with %2520 instead of %20 .
5 Answers
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How to find out what group a given user has?
In Unix/Linux, how do you find out what group a given user is in via command line?
5 Answers
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LINQ Using Max() to select a single row
I'm using LINQ on an IQueryable returned from NHibernate and I need to select the row with the maximum value(s) in a couple of fields.
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