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Is there a way to avoid null check before the for-each loop iteration starts? [duplicate]
...))
Alternatively, you could make a wrapper class that implements Iterable and takes a collections, and handles a null collection.
You could then write foreach(T obj : new Nullable<T>(list1))
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Using multiple delimiters in awk
...be useful, but can make things tricky ... as there are often spaces before and after 'this', this will make 2 extra empty field appear in between the space(s) and 'this')
– Olivier Dulac
Oct 15 '14 at 13:36
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To ternary or not to ternary? [closed]
...ve come across many programmers that are completely against ever using it, and some that use it too often.
54 Answers
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Does opacity:0 have exactly the same effect as visibility:hidden
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Also, with "opacity: 0" Flash objects are rendered, and sprite's constructor is triggered, but with "visibility: hidden" not.
– pepkin88
Dec 30 '10 at 22:40
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How can I present a file for download from an MVC controller?
...r present a "Download File" popup with an arbitrary file type, like a PDF, and a filename:
7 Answers
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How to get number of entries in a Lua table?
...ind an answer. The Lua # operator only counts entries with integer keys, and so does table.getn :
8 Answers
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Is there a better way to iterate over two lists, getting one element from each list for each iterati
I have a list of Latitudes and one of Longitudes and need to iterate over the latitude and longitude pairs.
7 Answers
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How to get the first non-null value in Java?
...(i != null) return i;
return null;
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For efficient reasons, you can handle the common cases as follows:
public static <T> T coalesce(T a, T b) {
return a == null ? b : a;
}
public static <T> T coalesce(T a, T b, T c) {
return a != null ? a : (b != null ? b : c);
}
public s...
bash/fish command to print absolute path to a file
Question: is there a simple sh/bash/zsh/fish/... command to print the absolute path of whichever file I feed it?
20 Answers...
Defining static const integer members in class definition
My understanding is that C++ allows static const members to be defined inside a class so long as it's an integer type.
7 An...