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Postgres - FATAL: database files are incompatible with server
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413
If you recently upgraded to 11 or 12 from 10.x you can run the below command to upgrade your pos...
What is float in Java?
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In Java, when you type a decimal number as 3.6, its interpreted as a double. double is a 64-bit precision IEEE 754 floating point, while floatis a 32-bit precision IEEE 754 floating point. As a float is less precise than a double, the conversion cannot be performed i...
How can I use if/else in a dictionary comprehension?
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31
Worth mentioning that you don't need to have an if-else condition for both the key and the value. For example, {(a if condition else b): v...
Python dictionary: are keys() and values() always the same order?
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365
Found this:
If items(), keys(), values(),
iteritems(), iterkeys(), and
itervalues() ar...
UIView with rounded corners and drop shadow?
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33 Answers
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jQuery get value of select onChange
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edited Aug 4 '18 at 15:53
moffeltje
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answered J...
How can I initialize a String array with length 0 in Java?
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232
As others have said,
new String[0]
will indeed create an empty array. However, there's one n...
Any way to properly pretty-print ordered dictionaries?
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133
As a temporary workaround you can try dumping in JSON format.
You lose some type information, b...
What are all the uses of an underscore in Scala?
...](a: K[T])
Ignored variables
val _ = 5
Ignored parameters
List(1, 2, 3) foreach { _ => println("Hi") }
Ignored names of self types
trait MySeq { _: Seq[_] => }
Wildcard patterns
Some(5) match { case Some(_) => println("Yes") }
Wildcard patterns in interpolations
"abc" match {...
How to get a float result by dividing two integer values using T-SQL?
...ers, you can cast them to be floats first:
SELECT CAST(1 AS float) / CAST(3 AS float)
or
SELECT CAST(MyIntField1 AS float) / CAST(MyIntField2 AS float)
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