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Where to define custom error types in Ruby and/or Rails?
... include the exception file. See this example, again from httparty: github.com/jnunemaker/httparty/blob/…
– Jason Swett
Apr 15 '14 at 20:05
37
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mkdir's “-p” option
So this doesn't seem like a terribly complicated question I have, but it's one I can't find the answer to. I'm confused about what the -p option does in Unix. I used it for a lab assignment while creating a subdirectory and then another subdirectory within that one. It looked like this:
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multiprocessing.Pool: When to use apply, apply_async or map?
...s performed in a separate process. Pool.apply blocks until the function is completed.
Pool.apply_async is also like Python's built-in apply, except that the call returns immediately instead of waiting for the result. An AsyncResult object is returned. You call its get() method to retrieve the resul...
How to check for the type of a template parameter?
...e all statically known. There shouldn't be any runtime cost, provided your compiler is half-decent. Check the assembly if in doubt, though.
– Kerrek SB
Nov 30 '12 at 21:43
2
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How to get key names from JSON using jq
curl http://testhost.test.com:8080/application/app/version | jq '.version' | jq '.[]'
7 Answers
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Pandoc markdown page break
... mathematical formulas, and I do not have ANY experience with LaTeX, which combined with less than 2 week submission deadline makes it a good solution.
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Defining a percentage width for a LinearLayout? [duplicate]
...t 0.70).
Like this:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent" android:layout_height="fill_parent"
android:id="@+id/layoutContainer" android:orientation="horizontal">
<RelativeLayout
android:layout_width="0...
What is the Scala annotation to ensure a tail recursive function is optimized?
I think there is @tailrec annotation to ensure the compiler will optimize a tail recursive function. Do you just put it in front of the declaration? Does it also work if Scala is used in scripting mode (for instance using :load <file> under REPL)?
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How can I get all constants of a type by reflection?
...)
// IsLiteral determines if its value is written at
// compile time and not changeable
// IsInitOnly determines if the field can be set
// in the body of the constructor
// for C# a field which is readonly keyword would have both true
// but ...
What is mod_php?
... : there is no external PHP process -- which means that Apache and PHP can communicate better.
And re-edit, after the comment : using CGI or mod_php is up to you : it's only a matter of configuration of your webserver.
To know which way is currently used on your server, you can check the output ...