c# - Checking If Intervals Are of Equal Length in a List -

i have list<foo> has 2 properties: start_time , end_time

assume have 100 records in list. how can check if intervals of equal length? in other terms, i'd know if values of difference between end , start times foo objects equal.

where (value = end_time-start_time).

is possible achieve in single linq line?

thanks, appreciate it.

sure, can write this:

var list = new list<foo>(); var areallequal = list.groupby(l => (l.end_time - l.start_time)).count() == 1; 

alternatively, if want more information:

var differences = list.groupby(l => (l.end_time - l.start_time)).tolist(); var numdifferences = differences.count(); var areallequal = numdifferences == 1; var firstdifference = differences.first().key; var alldifferences = differences.select(g => g.key);