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Scala best way of turning a Collection into a Map-by-key?
...h a variable number of tuples. So use the map method on the collection to convert it into a collection of tuples and then use the : _* trick to convert the result into a variable argument.
scala> val list = List("this", "maps", "string", "to", "length") map {s => (s, s.length)}
list: List[(j...
How to calculate time elapsed in bash script?
...ed:
an integer that represents the count of elapsed seconds and
a way to convert such integer to an usable format.
An integer value of elapsed seconds:
There are two bash internal ways to find an integer value for the number of elapsed seconds:
Bash variable SECONDS (if SECONDS is unset it...
Calendar returns wrong month [duplicate]
...treal" ) );
int month = now.getMonthValue(); // Returns 1-12 as values.
Convert legacy classes
If you have a GregorianCalendar object in hand, convert to ZonedDateTime using new toZonedDateTime method added to the old class. For more conversion info, see Convert java.util.Date to what “java.ti...
Can someone explain this 'double negative' trick? [duplicate]
...
A logical NOT operator ! converts a value to a boolean that is the opposite of its logical value.
The second ! converts the previous boolean result back to the boolean representation of its original logical value.
From these docs for the Logical ...
Integer.toString(int i) vs String.valueOf(int i)
... why the method String.valueOf(int i) exists ? I am using this method to convert int into String and just discovered the Integer.toString(int i) method.
...
PHP case-insensitive in_array function
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Seems like the easier way to go is to just convert to lowercase.
– Joshua Dance
Mar 26 '14 at 15:51
...
Post parameter is always null
...ecause in the constructor has an invalid type and Json doesn't know how to convert it' Like a Guid to a string. So either add the converter via settings or add a blank constructor and you don't need to back to old code like this.
– Nick Turner
May 13 '19 at 23:...
Why is unsigned integer overflow defined behavior but signed integer overflow isn't?
...types a special case.
Also note that there is an exception if any type is converted to a signed type and the old value can no longer be represented. The behavior is then merely implementation-defined, although a signal may be raised.
C11 6.3.1.3
6.3.1.3 Signed and unsigned integers
Whe...
How to round up the result of integer division?
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Converting to floating point and back seems like a huge waste of time at the CPU level.
Ian Nelson's solution:
int pageCount = (records + recordsPerPage - 1) / recordsPerPage;
Can be simplified to:
int pageCount = (recor...
Is there a command line utility for rendering GitHub flavored Markdown?
...ed Markdown, but I have found a slightly more generic version - Pandoc. It converts from/to a number of formats, including Markdown, Rest, HTML and others.
I've also developed a Makefile to convert all .md files to .html (in large part to the example at Writing, Markdown and Pandoc):
# 'Makefile'
...