diff options
Diffstat (limited to 'guix/monads.scm')
| -rw-r--r-- | guix/monads.scm | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/guix/monads.scm b/guix/monads.scm index 6933f7f151..fe3d5d78f1 100644 --- a/guix/monads.scm +++ b/guix/monads.scm @@ -204,8 +204,10 @@ the last one." (define-syntax mwhen (syntax-rules () - "When CONDITION is true, evaluate MEXP0..MEXP* as in an 'mbegin'. When -CONDITION is false, return *unspecified* in the current monad." + "When CONDITION is true, evaluate the sequence of monadic expressions +MEXP0..MEXP* as in an 'mbegin'. When CONDITION is false, return *unspecified* +in the current monad. Every expression in the sequence must be a monadic +expression." ((_ condition mexp0 mexp* ...) (if condition (mbegin %current-monad @@ -214,8 +216,10 @@ CONDITION is false, return *unspecified* in the current monad." (define-syntax munless (syntax-rules () - "When CONDITION is false, evaluate MEXP0..MEXP* as in an 'mbegin'. When -CONDITION is true, return *unspecified* in the current monad." + "When CONDITION is false, evaluate the sequence of monadic expressions +MEXP0..MEXP* as in an 'mbegin'. When CONDITION is true, return *unspecified* +in the current monad. Every expression in the sequence must be a monadic +expression." ((_ condition mexp0 mexp* ...) (if condition (return *unspecified*) |