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What does a lazy val do?
... not sure if it is later used.
scala> class X { val x = { Thread.sleep(2000); 15 } }
defined class X
scala> class Y { lazy val y = { Thread.sleep(2000); 13 } }
defined class Y
scala> new X
res5: X = X@262505b7 // we have to wait two seconds to the result
scala> new Y
res6: Y = Y@1555...
Hide keyboard when scroll UITableView
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420
Here is the cleanest way to achieve this in iOS 7.0 and above:
tableView.keyboardDismissMode =...
How do I parse a string to a float or int?
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>>> a = "545.2222"
>>> float(a)
545.22220000000004
>>> int(float(a))
545
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Difference between getAttribute() and getParameter()
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edited Mar 20 '14 at 5:32
jdphenix
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Is there any way to prevent input type=“number” getting negative values?
...anually.
– Altef four
Nov 21 '17 at 20:04
2
I can still copy paste negative values into the input...
PreparedStatement IN clause alternatives?
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edited Apr 20 '12 at 4:47
answered Apr 20 '12 at 4:32
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typedef struct vs struct definitions [duplicate]
... thanks : )
– Alexander Varwijk
Jul 20 '13 at 12:41
9
@AlexanderVarwijk: You want to typedef to a...
How do I calculate the date six months from the current date using the datetime Python module?
...andling business rules and scenarios (say invoice generation etc.)
$ date(2010,12,31)+relativedelta(months=+1)
datetime.date(2011, 1, 31)
$ date(2010,12,31)+relativedelta(months=+2)
datetime.date(2011, 2, 28)
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What is the difference between 'protected' and 'protected internal'?
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M4NM4N
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how to find host name from IP with out login to the host
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Use nslookup
nslookup 208.77.188.166
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Non-authoritative answer:
166.188.77.208.in-addr.arpa name = www.example.com.
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