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Best explanation for languages without null
... let middleLen = match p.MiddleName with
| None -> 0
| Some(s) -> s.Length
p.FirstName.Length + middleLen + p.LastName.Length
with no worries. In contrast, in a language with nullable references for types like string, then assuming
class Person
...
Multiple Parameters for jQuery selector?
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edited Apr 20 '10 at 2:10
answered Apr 20 '10 at 1:55
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How do I iterate through the alphabet?
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answered Jun 19 '13 at 4:00
JaredJared
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Regexp Java for password validation
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Try this:
^(?=.*[0-9])(?=.*[a-z])(?=.*[A-Z])(?=.*[@#$%^&+=])(?=\S+$).{8,}$
Explanation:
^ # start-of-string
(?=.*[0-9]) # a digit must occur at least once
(?=.*[a-z]) # a lower case letter must occur at leas...
How to find current transaction level?
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Run this:
SELECT CASE transaction_isolation_level
WHEN 0 THEN 'Unspecified'
WHEN 1 THEN 'ReadUncommitted'
WHEN 2 THEN 'ReadCommitted'
WHEN 3 THEN 'Repeatable'
WHEN 4 THEN 'Serializable'
WHEN 5 THEN 'Snapshot' END AS TRANSACTION_ISOLATION_LEVEL
FROM sys.dm_exec_sessions
whe...
Difference between $(document.body) and $('body')
...venemajvenema
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Wait for all promises to resolve
...ergiBergi
473k9393 gold badges764764 silver badges11091109 bronze badges
2
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MySQL: Sort GROUP_CONCAT values
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390
Sure, see http://dev.mysql.com/doc/refman/...tions.html#function_group-concat:
SELECT student_n...
How to comment in Vim's config files: “.vimrc”?
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kmario23
34.8k1010 gold badges108108 silver badges116116 bronze badges
answered Jan 9 '10 at 7:57
MylesMyles
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How to get a specific “commit” of a gem from github?
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edited Apr 20 '18 at 21:30
jeffmcc
23922 silver badges99 bronze badges
answered May 25 '11...