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How to test if a string is basically an integer in quotes using Ruby
...=~ /\A[-+]?[0-9]+\z/)
end
end
An edited version according to comment from @wich:
class String
def is_i?
/\A[-+]?\d+\z/ === self
end
end
In case you only need to check positive numbers
if !/\A\d+\z/.match(string_to_check)
#Is not a positive number
else
#Is al...
How to split a string in Haskell?
... Could not find module ‘Text.Regex’ Perhaps you meant Text.Read (from base-4.10.1.0)
– Andrew Koster
Jul 2 at 15:58
add a comment
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Is the order guaranteed for the return of keys and values from a LinkedHashMap object?
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Thank you for linking to documentation (from Map) that explicitly ties the order of a map to the iterators on the map's collection views (and making clear what those collection views are). That was the missing piece for me.
– LarsH
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How do I convert a Java 8 IntStream to a List?
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Since EC 9.0, you can build a primitive list from a primitive Stream. MutableIntList list = IntLists.mutable.withAll(IntStream.range(1, 5))
– Donald Raab
Jan 11 '19 at 21:53
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What is the maximum float in Python?
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It seems sys.float_info is available starting from v2.6. How about v2.3-5?
– Aleksei Fedotov
Jan 23 '15 at 13:40
1
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How can I pretty-print JSON using node.js?
...ole.dir().
It uses syntax-highlighting, smart indentation, removes quotes from keys and just makes the output as pretty as it gets.
const jsonString = `{"name":"John","color":"green",
"smoker":false,"id":7,"city":"Berlin"}`
const object = JSON.parse(jsonString)
console.dir(ob...
JQuery .on() method with multiple event handlers to one selector
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I learned something really useful and fundamental from here.
chaining functions is very usefull in this case which works on most jQuery Functions including on function output too.
It works because output of most jQuery functions are the input objects sets so you can use th...
Fragment in ViewPager using FragmentPagerAdapter is blank the second time it is viewed
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I had the same issue. Changing the parent class of my PageAdapter from android.support.v4.app.FragmentPagerAdapter to android.support.v4.app.FragmentStatePagerAdapter solve my ViewPager display issue on "second time"!
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ios app maximum memory budget
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You should watch session 147 from the WWDC 2010 Session videos. It is "Advanced Performance Optimization on iPhone OS, part 2".
There is a lot of good advice on memory optimizations.
Some of the tips are:
Use nested NSAutoReleasePools to make sure you...
What is your single most favorite command-line trick using Bash? [closed]
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Just to point out that to do the reverse (going from .cpp-old to .cpp) you'd do cp /home/foo/realllylongname.cpp{-old,}
– Michael Ekoka
Sep 3 '10 at 16:03
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