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How to handle configuration in Go [closed]
...s setting activated?", "what does it do?", "what are valid values for it?" etc).
– Darian Moody
Jan 22 '15 at 2:04
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Mapping a function on the values of a map in Clojure
...ure.walk/walk #(apply f %) identity m) )
Parellel versions – pmap-map, etc.
There are also parallel versions of these functions if you need them. They simply use pmap instead of map.
(defn pmap-map [f m]
(into (empty m) (pmap #(apply f %) m)) )
(defn pmap-map-keys [f m]
(pmap-map (fn [...
How to create a directory and give permission in single command
... 0777--since 777 only specifies the permissions, not the setuids, setgids, etc.)
Now, to apply this to your question in a broader sense--you have (already) got a few options. All the answers above work (at least according to my coreutils). But you may (or are pretty likely to) run into problems with...
java.lang.NoClassDefFoundError: Could not initialize class XXX
...likely the cause of the problem (maybe file can't be found, no permissions etc.).
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How to use sed/grep to extract text between two words?
...n the grep included in *BSD, or the ones that come with any SVR4 (Solaris, etc). In FreeBSD, you can install the devel/pcre port which includes pcregrep, which supports PCRE (and look-ahead/behind). Older versions of OSX used GNU grep, but in OSX Mavericks, -P is derived from FreeBSD's version, whi...
How to get a random number in Ruby
... @banister: wow, I was convinced that the new api (rand with range, bytes, etc...) was available directly through the Random object. rand with range will be in 1.9.3, and I'll make a feature request for bytes. I've edited my answer
– Marc-André Lafortune
Jun 2...
MySQL InnoDB not releasing disk space after deleting data rows from table
...ng for your table like - Unique Keys, Indexes to include partition column etc.
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Add centered text to the middle of a -like line
... answered May 11 '10 at 17:09
Fletcher MooreFletcher Moore
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Android: How to enable/disable option menu item on button click?
... a premium member, if the user signs in, if the user connects to internet, etc.) then it's nice to have it greyed out because then the it lets the user know there is some existing feature they don't have access to for some reason.
– yiati
May 1 '14 at 19:58
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How does one reorder columns in a data frame?
...e present. Because there are no columns with the character names "1", "3", etc. you'll get "undefined columns". list(1,3,"Var1", 2) keeps values without type promotion, but you can't use a list in the above context.
– Terry Brown
Jan 18 '15 at 16:05
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