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What does a lazy val do?
... is defined whereas a lazy val is executed when it is accessed the first tim>me m>.
scala> val x = { println("x"); 15 }
x
x: Int = 15
scala> lazy val y = { println("y"); 13 }
y: Int = <lazy>
scala> x
res2: Int = 15
scala> y
y
res3: Int = 13
scala> y
res4: Int = 13
In contrast ...
Java optional param>me m>ters
How do I use optional param>me m>ters in Java? What specification supports optional param>me m>ters?
17 Answers
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Can an Android NFC phone act as an NFC tag?
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At this tim>me m>, I would answer "no" or "with difficulty", but that could change over tim>me m> as the android NFC API evolves.
There are three modes of NFC interaction:
Reader-Writer: The phone reads tags and writes to them. It's not emul...
Can I try/catch a warning?
I need to catch som>me m> warnings being thrown from som>me m> php native functions and then handle them.
11 Answers
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How to run a Runnable thread in Android at defined intervals?
I developed an application to display som>me m> text at defined intervals in the Android emulator screen. I am using the Handler class. Here is a snippet from my code:
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Asp.net - Add blank item at top of dropdownlist
...pendDataBoundItems = true; to bind it to the current data in the Page_Load m>me m>thod
– sabastienfyrre
Sep 14 '15 at 14:47
add a comm>me m>nt
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How can I override Bootstrap CSS styles?
...e, I'll suffer trying to re-include all my modifications. I'll sacrifice som>me m> load tim>me m> for these styles, but it's negligible for the few styles I'm overriding.
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What does -1 m>me m>an in numpy reshape?
...numpy matrix can be reshaped into a vector using reshape function with param>me m>ter -1. But I don't know what -1 m>me m>ans here.
9...
Can we pass param>me m>ters to a view in SQL?
Can we pass a param>me m>ter to a view in Microsoft SQL Server?
19 Answers
19
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SQL keys, MUL vs PRI vs UNI
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It m>me m>ans that the field is (part of) a non-unique index. You can issue
show create table <table>;
To see more information about the table structure.
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