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Ruby get object keys as array

... add a comment  |  16 ...
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differences in application/json and application/x-www-form-urlencoded

...anding is using JSON as contentType helps when the data to be sent is more complex and involves a lot of hierarchy.. whereas form encoded is good to send simple params in url which can be read at the backend without to much code... I guess this answers the why part of it. – Ank...
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How to include file in a bash shell script

... Simply put inside your script : source FILE Or . FILE # POSIX compliant $ LANG=C help source source: source filename [arguments] Execute commands from a file in the current shell. Read and execute commands from FILENAME in the current shell. The entries in $PATH are used to find the...
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How do you embed binary data in XML?

I have two applications written in Java that communicate with each other using XML messages over the network. I'm using a SAX parser at the receiving end to get the data back out of the messages. One of the requirements is to embed binary data in an XML message, but SAX doesn't like this. Does an...
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How can I tell which homebrew formulae are upgradable?

..., I found that the answer is: brew outdated brew help does not list the command, but it is documented in man brew. share | improve this answer | follow | ...
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Java time-based map/cache with expiring keys [closed]

...lues() .maximumSize(10000) .expiration(10, TimeUnit.MINUTES) .makeComputingMap( new Function<Key, Graph>() { public Graph apply(Key key) { return createExpensiveGraph(key); } }); Update: As of guava 10.0 (released September 28, 2011) many ...
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UIView's frame, bounds, center, origin, when to use what?

...frame. A good discussion of this can be found at the link below. It is uncommon for this property to be manipulated unless there is specific need to adjust the drawing region. The only exception is that most programs will use the [[UIScreen mainScreen] bounds] on startup to determine the visible ...
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How to change owner of PostgreSql database?

... For completeness here is the part of the manual which documents this: postgresql.org/docs/current/static/sql-alterdatabase.html – a_horse_with_no_name Nov 30 '10 at 12:29 ...
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Why should we include ttf, eot, woff, svg,… in a font-face

...se it. More time passes and it turns out that they are absolutely terrible compared to just a normal font format, and SVG 2 wisely removes the entire chapter again. Then, woff gets invented by people with quite a bit of domain knowledge, which makes it possible to host fonts in a way that throws awa...
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Why does Haskell's “do nothing” function, id, consume tons of memory?

... of the leftmost id is twice as large. Note that types are deleted during compilation, so this will only take up memory in GHC. It won't take up memory in your program. share | improve this answer...