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Haskell: Where vs. Let
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1: The problem in the example
f :: State s a
f = State $ \x -> y
where y = ... x ...
is the parameter x. Things in the where clause can refer only to the parameters of the function f (there are none) and things in o...
How to Create Multiple Where Clause Query Using Laravel Eloquent?
... more granular wheres passed as an array:
$query->where([
['column_1', '=', 'value_1'],
['column_2', '<>', 'value_2'],
[COLUMN, OPERATOR, VALUE],
...
])
Personally I haven't found use-case for this over just multiple where calls, but fact is you can use it.
Since June 20...
Very simple log4j2 XML configuration file using Console and File appender
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<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="INFO">
<Appenders>
<Console name="Console" target="SYSTEM_OUT">
<PatternLayout pattern="%d{HH:mm:ss.SSS} [%t] %-5level %logger{36}...
How to convert ActiveRecord results into an array of hashes
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212
as_json
You should use as_json method which converts ActiveRecord objects to Ruby Hashes despi...
How can I use Python to get the system hostname?
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11 Answers
11
Active
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Don't understand why UnboundLocalError occurs (closure) [duplicate]
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169
Python doesn't have variable declarations, so it has to figure out the scope of variables itse...
How do I list one filename per output line in Linux?
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Use the -1 option (note this is a "one" digit, not a lowercase letter "L"), like this:
ls -1a
First, though, make sure your ls supports -1. GNU coreutils (installed on standard Linux systems) and Solaris do; but if in doubt, use...
getMonth in javascript gives previous month
...ing a datepicker which gives a date in the format Sun Jul 7 00:00:00 EDT 2013.
Even though the month says July, if I do a getMonth, it gives me the previous month.
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