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Rails: Why does find(id) raise an exception in rails? [duplicate]
... (1, 5, 6), or an array of ids ([5, 6, 10]). If no record can be found for all of the listed ids, then RecordNotFound will be raised.
If you don't want the exception to be raised, use find_by_id, which will return nil if it can't find an object with the specified id. Your example would then be Us...
Javascript roundoff number to nearest 0.5
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rounding the num*2 is not working for all case..try any decimal like 15.27 => using your formula will give => 15 where in fact it should have returned 15.5. **** I think using toFixed will be better (num*2).toFixed()/2
– sfdx bomb
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Go build: “Cannot find package” (even though GOPATH is set)
...It does not work because your foobar.go source file is not in a directory called foobar. go build and go install try to match directories, not source files.
Set $GOPATH to a valid directory, e.g. export GOPATH="$HOME/go"
Move foobar.go to $GOPATH/src/foobar/foobar.go and building should work just ...
Add a prefix string to beginning of each line
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You can use Vim in Ex mode:
ex -sc '%s/^/prefix/|x' file
% select all lines
s replace
x save and close
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SVG Positioning
... hoping to use it like a container, so I could set its x position and then all the elements in that group would also move. But that doesn't seem to be possible.
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in Ipython notebook / Jupyter, Pandas is not displaying the graph I try to plot
...ndas in Ipython Notebook, and while it gives me the object, it doesn't actually plot the graph itself. So it looks like this:
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MySQL SELECT WHERE datetime matches day (and not necessarily time)
I have a table which contains a datetime column. I wish to return all records of a given day regardless of the time. Or in other words, if my table only contained the following 4 records, then only the 2nd and 3rd would be returned if I limit to 2012-12-25.
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Index of Currently Selected Row in DataGridView
...ndex error two. You'd better wrapped it with a if
– Allan Ruin
Mar 11 '15 at 1:22
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grep exclude multiple strings
I am trying to see a log file using tail -f and want to exclude all lines containing the following strings:
7 Answers
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How to run Nginx within a Docker container without halting?
I have Nginx installed on a Docker container, and am trying to run it like this:
9 Answers
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