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How to convert JSON to a Ruby hash
...test1","val2":"test2"}'
json = JSON.parse(value).with_indifferent_access
then
json[:val] #=> "test"
json["val"] #=> "test"
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Try-finally block prevents StackOverflowError
...e it has just recovered. It will go back and forth throwing exceptions and then going back Dow the stack until it happens again. Forever.
– Kibbee
Sep 15 '12 at 18:24
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How to count occurrences of a column value efficiently in SQL?
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If you're using Oracle, then a feature called analytics will do the trick. It looks like this:
select id, age, count(*) over (partition by age) from students;
If you aren't using Oracle, then you'll need to join back to the counts:
select a.id,...
How to compare two dates?
... time.strptime(date2, "%d/%m/%Y") to convert them to python's date format. Then, the comparison is obvious:
newdate1 > newdate2 will return False
newdate1 < newdate2 will return True
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How do I put an already-running process under nohup?
...erefore you have to throw the job into the background (not suspend it) and then disown it.
Issue:
% jobs
[1] running java
[2] suspended vi
% disown %1
See http://www.quantprinciple.com/invest/index.php/docs/tipsandtricks/unix/jobcontrol/
for a more detailed discussion of Unix Job Control.
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Method overloading in Objective-C?
...e:from: were defined twice, with only the parameter types being different, then that would be overloading. As stated though, this is not supported in ObjC like it is with other languages including Java and now Swift.
– Chris Hatton
Nov 6 '15 at 12:57
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Cross-browser multi-line text overflow with ellipsis appended within a fixed width and height
...sensible truncation on the server-side (that leaves only a small overhead) then it will run quicker :).
Again, this is not a complete solution, just an idea.
UPDATE: Added a jsFiddle Demo.
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Using Vim's persistent undo?
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Why not use mkdir()? Then this can become: call mkdir(myUndoDir, 'p'), which behaves like mkdir -p.
– nelstrom
May 25 '17 at 15:06
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Test if a class has an attribute?
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Did +1 and then noticed error. It should be .IsDefined(typeof(Type), false);
– Alexander Beletsky
Apr 5 '12 at 13:13
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How to wait for a keypress in R?
...NULL, onKeybd = onKeybd,
consolePrompt = "[click on graph then follow top prompt to continue]")
Sys.sleep(0.01)
return(keyPressed)
}
onKeybd <- function(key)
{
keyPressed <<- key
}
xaxis=c(1:10) # Set up the x-axis.
yaxis=runif(10,min=0,max=1) # Set up the y-a...