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pydot and graphviz error: Couldn't import dot_parser, loading of dot files will not be possible
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How to create an exit message
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edited Feb 3 '17 at 17:31
the Tin Man
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Scala equivalent of Java java.lang.Class Object
...gt; classOf[C]
res0: java.lang.Class[C] = class C
scala> c.getClass
res1: java.lang.Class[_] = class C
That is why the following will not work:
val xClass: Class[X] = new X().getClass //it returns Class[_], nor Class[X]
val integerClass: Class[Integer] = new Integer(5).getClass //similar error...
How can I check whether a option already exist in select by JQuery
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341
This evaluates to true if it already exists:
$("#yourSelect option[value='yourValue']").length ...
SqlAlchemy - Filtering by Relationship Attribute
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170
Use method has() of relationship (more readable):
patients = Patient.query.filter(Patient.mot...
What is the difference between save and export in Docker?
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174
The short answer is:
save will fetch an image : for a VM or a physical server, that would be...
Shorthand way for assigning a single field in a record, while copying the rest of the fields?
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157
Yes, there's a nice way of updating record fields. In GHCi you can do --
> data Foo = Foo ...
Combining multiple @SuppressWarnings annotations - Eclipse Indigo
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answered Oct 25 '12 at 14:02
LuGoLuGo
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How to change int into int64?
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186
This is called type conversion :
i := 23
var i64 int64
i64 = int64(i)
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What is the difference between Collections.emptyList() and Collections.EMPTY_LIST
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Collections.EMPTY_LIST returns an old-style List
Collections.emptyList() uses type-inference ...