fill an array in C

Question

In Java there are about 18 a static  fill  methods in the class Arrays that serve to assign one value to each element in an array  I m looking for an equivalent in C  to achieve the same thing but I m not finding anything with the same compactness   1  ForEach as I understand passes elements in the array by value so I can t change them  2  Repeat from Enumerable creates a new array  it seems to be overhead to create a new array and then copy each element from the array  3  a for-loop isn t pretty  which I guess is why the Java folks introduced this compact notation to begin with  4  The Clear method from the Array class can set everything to zero  but then how do I convert zero to the non-zero value I want   To demonstrate Java s syntax consider this code that prints three times the number 7   int   iii    1  2  3   Arrays fill iii  7   for  int i   iii        System out println i

User · Answer

Say you want to fill with number 13   int   myarr   Enumerable Range 0  10  Select n   gt  13  ToArray     or  List lt int gt  myarr   Enumerable Range 0 10  Select n   gt  13  ToList     if you prefer a list

User · Answer

Write yourself an extension method  public static class ArrayExtensions       public static void Fill lt T gt  this T   originalArray  T with            for int i   0  i  lt  originalArray Length  i                 originalArray i    with                        and use it like  int foo     new int   0 0 0 0 0   foo Fill 13     will fill all the elements with 13

User · Answer

you could write an extension method  public static void Fill lt T gt  this T   array  T value      for int i   0  i  lt  array Length  i              array i    value

User · Answer

public static void Fill lt T gt  this IList lt T gt  col  T value  int fromIndex  int toIndex        if  fromIndex  gt  toIndex          throw new ArgumentOutOfRangeException  fromIndex         for  var i   fromIndex  i  lt   toIndex  i            col i    value      Something that works for all IList lt T gt s

User · Answer

int   arr   Enumerable Repeat 42  10000  ToArray      I believe that this does the job

User · Answer

You could try something like this   I have initialzed the array for having value 5  you could put your number similarly   int   arr   new int 10      your initial array  arr   arr Select i   gt  5  ToArray       array initialized to 5

[c#] fill an array in C#

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