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How can I check whether a option already exist in select by JQuery

... -1 You're basically doing the loop yourself instead of letting jQuery do it like all the other answers. Although this would work, it's re-inventing the wheel. – Peter Apr 4 '13 at 18:33 ...
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What is a domain specific language? Anybody using it? And in what way?

... Groovy is a scripting language that runs in a JVM. It's basically intended to be a Java answer to Ruby. It's a general purpose language but it can be used to write DSLs. docs.groovy-lang.org/docs/latest/html/documentation/… – Charlie Martin Jul ...
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What is the difference between max-device-width and max-width for mobile web?

... actual device screen Same goes for max-height and max-device-height naturally. share | improve this answer | follow | ...
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Random date in C#

...tart.AddDays(gen.Next(range)); } For better performance if this will be called repeatedly, create the start and gen (and maybe even range) variables outside of the function. share | improve this a...
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How can I pair socks from a pile efficiently?

... enough (and faster). For each color of socks, form a pile. Iterate over all socks in your input basket and distribute them onto the color piles. Iterate over each pile and distribute it by some other metric (e.g. pattern) into the second set of piles Recursively apply this scheme until you have d...
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Good MapReduce examples [closed]

...ibuted manner Here is a wikipedia article explaining what map-reduce is all about Another good example is Finding Friends via map reduce can be a powerful example to understand the concept, and a well used use-case. Personally, found this link quite useful to understand the concept Copying th...
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Hello World in Python [duplicate]

... "requires parenthesis" is not really the adequate explanation as to the change from 2.x to 3 :) – Paolo Bergantino Jul 3 '09 at 0:29 15 ...
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How can I increase the cursor speed in terminal? [closed]

...is one lets you do it within the bounds set by Apple. The Accepted Answer allows you more flexibility. – Andrew Feb 24 '13 at 19:18 42 ...
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How to always show scrollbar

...s="vertical" along with android:fadeScrollbars="false" or it won't show at all in some cases. share | improve this answer | follow | ...
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Pass column name in data.table using variable [duplicate]

... I already have a gazillion column names in a character vector all there with double quotes around them. How do I get rid of the quotes? – Farrel Jun 28 '16 at 0:23 2 ...