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Useful code which uses reduce()? [closed]
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The other uses I've found for it besides + and * were with and and or, but now we have any and all to replace those cases.
foldl and foldr do come up in Scheme a lot...
Here's some cute usages:
Flatten a list
Goal: turn [[1, 2, 3], [4, 5], [6, 7,...
Check if instance is of a type
Using this to check if c is an instance of TForm .
9 Answers
9
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Break when a value changes using the Visual Studio debugger
...dited Apr 8 '16 at 14:57
Peter Mortensen
26.5k2121 gold badges9292 silver badges122122 bronze badges
answered Oct 1 '08 at 22:36
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How to remove all null elements from a ArrayList or String Array?
...singleton(null));
Read the Java API. The code will throw java.lang.UnsupportedOperationException for immutable lists (such as created with Arrays.asList); see this answer for more details.
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isset() and empty() - what to use
...prove my coding style?:) In some tasks I need to check - is variable empty or contains something. To solve this task, I usually do the following.
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Rails 4: List of available datatypes
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Here are all the Rails 4 (ActiveRecord migration) datatypes:
:binary
:boolean
:date
:datetime
:decimal
:float
:integer
:bigint
:primary_key
:references
:string
:text
:time
:timestamp
Source: http://api.rubyonrails.org/classes/ActiveRecord/ConnectionAdapter...
Add number of days to a date
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strtotime
expects to be given a string containing a US English date format and will try to parse that format into a Unix timestamp (the number of seconds since January 1 1970 00:00:00 UTC), relative to the timestamp given in now, or the current time if now is not supplied.
while date
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What is difference between Errors and Exceptions? [duplicate]
How can I differentiate between Errors and Exceptions in Java?
4 Answers
4
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How to validate an email address using a regular expression?
...owly developed a regular expression that validates MOST email addresses correctly, assuming they don't use an IP address as the server part.
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Detecting request type in PHP (GET, POST, PUT or DELETE)
How can I detect which request type was used (GET, POST, PUT or DELETE) in PHP?
13 Answers
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