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Post Challenge

Can you give me half?

+11
−0

Challenge idea taken from: Eliseo D'Annunzio

Task

Provide code that evaluates to 0.5 numerically, i.e. the output must be recognized by your chosen language as a numeric value (Number, float, double, etc), not as a string.

The catch, the characters 0 through to 9 cannot be used.

One example that fits the brief would be the following:

((++[[]][[~~""]]<<++[[]][[~~""]]))**((--[[]][[~~""]])) which works out to 0.5 in JavaScript.

Scoring

This is a code challenge, where scoring is done in terms of number of unique characters used in the submission. Ties are broken by lowest bytecount.

alternative-scoring number code-challenge lowest-score
posted almost 3 years ago
3y ago by Moshi‭
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Razetime‭
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Languages without built in float (2 comments)
Leaderboard scores (1 comment)

23 answers

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+1
−0

Fig, 2 unique, 2 total

H!

Try it online!

Halves the negation of the empty string when no input is given.

posted about 2 years ago
2y ago
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south‭
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+1
−0

Golfscript, 8 6 bytes, 5 unique

!).!(?

Explanation:

! # negate , no value makes it 1
) # increment -> 2
. # duplicate 2
! # negate 2 = 0
( # decrement -> -1
? # exponentiate, 2^-1 = 1/2

Original solution:

!)""!((?
posted about 2 years ago
2y ago
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taoh‭
21 reputation 0 2 2 7
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+1
−0

[Extended] Dyalog APL, 4 bytes*

*10 bytes, 4 unique

'÷'÷⍥≢'÷÷'

This computes the length of the string '÷' divided by the length of the string '÷÷'

Alternate solution (extended only) (6 unique, 6 bytes)

⊢÷+⍨×∞

This computes

\[ \left(\lambda x.\frac{x}{x+x}\right) \mathrm{sign}\infty \]
posted over 1 year ago
1y ago
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RubenVerg‭
161 reputation 0 13 16 17
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