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docs/howto/ensure-int-is-odd-or-even: Ensuring that an integer value is either odd or even #97

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jpluscplusm opened this issue Mar 7, 2024 · 3 comments
Closed

docs/howto/ensure-int-is-odd-or-even: Ensuring that an integer value is either odd or even #97

jpluscplusm opened this issue Mar 7, 2024 · 3 comments
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content idea Idea for a new piece of content good first issue Good for newcomers howto For content that in the "howto" diataxis quadrant

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@jpluscplusm
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jpluscplusm commented Mar 7, 2024 •
edited 

exec cue eval -i file.cue
cmp stdout out
-- file.cue --
#even: num={2 * (__div(num, 2))}
#odd:  num={2*(__div(num, 2)) + 1}

a: 56 & #even
b: 97 & #even
c: 56 & #odd
d: 97 & #odd
-- out --
#even: 2 * div(num, 2)
#odd:  2*div(num, 2) + 1
a:     56
b:     _|_ // b: conflicting values 96 and 97
c:     _|_ // c: conflicting values 57 and 56
d:     97

Can, of course, be expanded to check for multiples of any integer, not just 2; but the resulting page title would get a little wordy.

This also works:

#even: math.Trunc(x/2) * 2

... but doing the same for #odd is more fiddly, as it requires responding to the sign of the original number. i.e. the trailing +1 needs to be -1 if the number is negative. Not /hard/, just inelegant, relative to the first solution, above.
@jpluscplusm jpluscplusm added content idea Idea for a new piece of content good first issue Good for newcomers howto For content that in the "howto" diataxis quadrant labels Mar 7, 2024
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It'd be worth checking in on cue-lang/cue#2926 to see if a standard-library-based solution could also be demonstrated.

cueckoo pushed a commit to cue-lang/cuelang.org that referenced this issue Mar 9, 2024
@NoamTD
docs/howto: ensure an int is odd or even
c751151 
This adds a Commented Cue guide demonstrating how to ensure that a given number is even/odd.
Examples are provided for the 4 different validation outcomes.

For cue-lang/docs-and-content#97

Preview-Path: /docs/howto/ensure-int-is-odd-or-even/
Change-Id: Ibc7a31dcbbb13a8d155f30731c961691e47d79ed
Signed-off-by: Noam Dolovich <noam.tzvi.dolovich@gmail.com>
cueckoo pushed a commit to cue-lang/cuelang.org that referenced this issue Mar 9, 2024
@NoamTD
docs/howto: ensure an int is odd or even
7239bb3 
This adds a Commented Cue guide demonstrating how to ensure that a given number is even/odd.
Examples are provided for the 4 different validation outcomes.

For cue-lang/docs-and-content#97

Preview-Path: /docs/howto/ensure-int-is-odd-or-even/
Change-Id: Ibc7a31dcbbb13a8d155f30731c961691e47d79ed
Signed-off-by: Noam Dolovich <noam.tzvi.dolovich@gmail.com>
cueckoo pushed a commit to cue-lang/cuelang.org that referenced this issue Mar 9, 2024
@NoamTD
docs/howto: ensure an int is odd or even
a7e5b1e 
This adds a Commented Cue guide demonstrating how to ensure that a given number is even/odd.
Examples are provided for the 4 possible different validation outcomes.

For cue-lang/docs-and-content#97

Preview-Path: /docs/howto/ensure-int-is-odd-or-even/
Change-Id: Ibc7a31dcbbb13a8d155f30731c961691e47d79ed
Signed-off-by: Noam Dolovich <noam.tzvi.dolovich@gmail.com>
cueckoo pushed a commit to cue-lang/cuelang.org that referenced this issue Mar 12, 2024
@NoamTD
docs/howto: ensure an int is odd or even
b41b969 
This adds a Commented Cue guide demonstrating how to ensure that a given number is even/odd.
Examples are provided for the 8 different validation outcomes, based on
the following matrix:
- odd/even
- positive/negative
- valid/invalid

For cue-lang/docs-and-content#97

Preview-Path: /docs/howto/ensure-int-is-odd-or-even/
Change-Id: Ibc7a31dcbbb13a8d155f30731c961691e47d79ed
Signed-off-by: Noam Dolovich <noam.tzvi.dolovich@gmail.com>
cueckoo pushed a commit to cue-lang/cuelang.org that referenced this issue Mar 12, 2024
@NoamTD
docs/howto: ensure an int is odd or even
4ec5783 
This adds a Commented Cue guide demonstrating how to ensure that a given number is even/odd.
Examples are provided for the 8 different validation outcomes, based on
the following matrix:
- odd/even
- positive/negative
- valid/invalid

For cue-lang/docs-and-content#97

Preview-Path: /docs/howto/ensure-int-is-odd-or-even/
Change-Id: Ibc7a31dcbbb13a8d155f30731c961691e47d79ed
Signed-off-by: Noam Dolovich <noam.tzvi.dolovich@gmail.com>
cueckoo pushed a commit to cue-lang/cuelang.org that referenced this issue Mar 12, 2024
@NoamTD
docs/howto: ensure an int is odd or even
61f3b46 
This adds a Commented Cue guide demonstrating how to ensure
that a given number is even/odd.

Examples are provided for the 8 different validation outcomes, based on
the following matrix:
- odd/even
- positive/negative
- valid/invalid

For cue-lang/docs-and-content#97

Preview-Path: /docs/howto/ensure-int-is-odd-or-even/
Change-Id: Ibc7a31dcbbb13a8d155f30731c961691e47d79ed
Signed-off-by: Noam Dolovich <noam.tzvi.dolovich@gmail.com>
cueckoo pushed a commit to cue-lang/cuelang.org that referenced this issue Mar 12, 2024
@NoamTD
docs/howto: ensure an int is odd or even
7819de3 
This adds a Commented Cue guide demonstrating how to ensure
that a given number is even/odd.

Examples are provided for the 8 different validation outcomes,
base on the following matrix:
- odd/even
- positive/negative
- valid/invalid

For cue-lang/docs-and-content#97

Preview-Path: /docs/howto/ensure-int-is-odd-or-even/
Change-Id: Ibc7a31dcbbb13a8d155f30731c961691e47d79ed
Signed-off-by: Noam Dolovich <noam.tzvi.dolovich@gmail.com>
cueckoo pushed a commit to cue-lang/cuelang.org that referenced this issue Mar 12, 2024
@NoamTD
docs/howto: ensure an int is odd or even
4b9d954 
This adds a Commented Cue guide demonstrating how to ensure
that a given number is even/odd.

Examples are provided for the 8 different validation outcomes, based on
the following matrix:
- odd/even
- positive/negative
- valid/invalid

For cue-lang/docs-and-content#97

Preview-Path: /docs/howto/ensure-int-is-odd-or-even/
Change-Id: Ibc7a31dcbbb13a8d155f30731c961691e47d79ed
Signed-off-by: Noam Dolovich <noam.tzvi.dolovich@gmail.com>
cueckoo pushed a commit to cue-lang/cuelang.org that referenced this issue Mar 12, 2024
@NoamTD
docs/howto: ensure an int is odd or even
e3f58db 
This adds a Commented Cue guide demonstrating how to ensure
that a given integer is even/odd.

Examples are provided for the 8 different validation outcomes, based on
the following matrix:
- odd/even
- positive/negative
- valid/invalid

For cue-lang/docs-and-content#97

Preview-Path: /docs/howto/ensure-int-is-odd-or-even/
Change-Id: Ibc7a31dcbbb13a8d155f30731c961691e47d79ed
Signed-off-by: Noam Dolovich <noam.tzvi.dolovich@gmail.com>
@jpluscplusm
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https://cuelang.org/cl/1177968

cueckoo pushed a commit to cue-lang/cuelang.org-trybot that referenced this issue Mar 12, 2024
@NoamTD @cueckoo
docs/howto: ensure an int is odd or even
0aaa63e 
This adds a Commented Cue guide demonstrating how to ensure
that a given integer is even/odd.

Examples are provided for the 8 different validation outcomes, based on
the following matrix:
- odd/even
- positive/negative
- valid/invalid

For cue-lang/docs-and-content#97

Preview-Path: /docs/howto/ensure-int-is-odd-or-even/
Change-Id: Ibc7a31dcbbb13a8d155f30731c961691e47d79ed
Signed-off-by: Noam Dolovich <noam.tzvi.dolovich@gmail.com>
Dispatch-Trailer: {"type":"trybot","CL":1177968,"patchset":10,"ref":"refs/changes/68/1177968/10","targetBranch":"alpha"}
cueckoo pushed a commit to cue-lang/cuelang.org that referenced this issue Mar 14, 2024
@NoamTD
docs/howto: validate an integer value's parity
398c606 
This adds a Commented Cue guide demonstrating how to validate an integer
value's parity.

Examples are provided for the 8 different validation outcomes, based on
the following matrix:
- odd/even
- positive/negative
- valid/invalid

For cue-lang/docs-and-content#97

Preview-Path: /docs/howto/ensure-int-is-odd-or-even/
Change-Id: Ibc7a31dcbbb13a8d155f30731c961691e47d79ed
Signed-off-by: Noam Dolovich <noam.tzvi.dolovich@gmail.com>
cueckoo pushed a commit to cue-lang/cuelang.org that referenced this issue Mar 14, 2024
@NoamTD
docs/howto: validate an integer value's parity
6c90f6b 
This adds a Commented Cue guide demonstrating how to validate an integer
value's parity.

Examples are provided for the 8 different validation outcomes, based on
the following matrix:
- odd/even
- positive/negative
- valid/invalid

For cue-lang/docs-and-content#97

Preview-Path: /docs/howto/ensure-int-is-odd-or-even/
Change-Id: Ibc7a31dcbbb13a8d155f30731c961691e47d79ed
Signed-off-by: Noam Dolovich <noam.tzvi.dolovich@gmail.com>
cueckoo pushed a commit to cue-lang/cuelang.org that referenced this issue Mar 14, 2024
@NoamTD
docs/howto: validate an integer value's parity
9f6d1e5 
This adds a Commented Cue guide demonstrating how to validate an integer
value's parity.

Examples are provided for the 8 different validation outcomes, based on
the following matrix:
- odd/even
- positive/negative
- valid/invalid

For cue-lang/docs-and-content#97

Preview-Path: /docs/howto/validate-integer-value-parity/
Change-Id: Ibc7a31dcbbb13a8d155f30731c961691e47d79ed
Signed-off-by: Noam Dolovich <noam.tzvi.dolovich@gmail.com>
cueckoo pushed a commit to cue-lang/cuelang.org-trybot that referenced this issue Mar 14, 2024
@NoamTD @cueckoo
docs/howto: validate an integer value's parity
bac12b8 
This adds a Commented Cue guide demonstrating how to validate an integer
value's parity.

Examples are provided for the 8 different validation outcomes, based on
the following matrix:
- odd/even
- positive/negative
- valid/invalid

For cue-lang/docs-and-content#97

Preview-Path: /docs/howto/validate-integer-value-parity/
Change-Id: Ibc7a31dcbbb13a8d155f30731c961691e47d79ed
Signed-off-by: Noam Dolovich <noam.tzvi.dolovich@gmail.com>
Dispatch-Trailer: {"type":"trybot","CL":1177968,"patchset":13,"ref":"refs/changes/68/1177968/13","targetBranch":"alpha"}
cueckoo pushed a commit to cue-lang/cuelang.org that referenced this issue Mar 14, 2024
@NoamTD @jpluscplusm
docs/howto: validate an integer value's parity
e57cd0e 
This adds a Commented Cue guide demonstrating how to validate an integer
value's parity.

Examples are provided for the 8 different validation outcomes, based on
the following matrix:
- odd/even
- positive/negative
- valid/invalid

For cue-lang/docs-and-content#97

Preview-Path: /docs/howto/validate-integer-value-parity/
Change-Id: Ibc7a31dcbbb13a8d155f30731c961691e47d79ed
Signed-off-by: Noam Dolovich <noam.tzvi.dolovich@gmail.com>
Reviewed-on: https://review.gerrithub.io/c/cue-lang/cuelang.org/+/1177968
Reviewed-by: Paul Jolly <paul@myitcv.io>
Reviewed-by: Jonathan Matthews <github@hello.jonathanmatthews.com>
TryBot-Result: CUEcueckoo <cueckoo@gmail.com>
@jpluscplusm
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Closed via cue-lang/cuelang.org@e57cd0e, and now published at https://alpha.cuelang.org/docs/howto/validate-integer-value-parity/.

Many thanks for writing this, @NoamTD!

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