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Uninitialized constant ActiveSupport::Dependencies::Mutex (NameError)
...r if you are using rvm (ideal when needing to go back and support old code bases!): rvm rubygems 1.5.3
– tardate
Oct 3 '11 at 23:59
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Array_merge versus + [duplicate]
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In our code base we stopped using + and array_merge for arrays, instead using two new functions we wrote. "array_merge_by_key" and "array_concat" instead of a single function with a heuristic that tries to guess at what you want
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Could not reliably determine the server's fully qualified domain name
...hat httpd can not find a FQDN, so it might not work right to handle a name-based virtual host. So make sure the expected FQDN is registered in your DNS server, or manually add the entry in /etc/hosts which is prior to hitting DNS.
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Calling a function on bootstrap modal open
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You can use the shown event/show event based on what you need:
$( "#code" ).on('shown', function(){
alert("I want this to appear after the modal has opened!");
});
Demo: Plunker
Update for Bootstrap 3.0
For Bootstrap 3.0 you can still use the shown event but ...
How to initialize an array in Java?
...ou can only access data[0] to data[9] because index of arrays in Java is 0-based). Accessing data[10] will throw an ArrayIndexOutOfBoundsException.
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Mod in Java produces negative numbers [duplicate]
...er calculation on most CPUs. Or, if you want to conditionally add a value based on whether an int is negative or not, try (maybeNegative >> 31) ^ thingToMaybeAdd + thingToAddTo
– Scott Carey
Sep 28 '18 at 17:26
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SQL Inner-join with 3 tables?
....studentid = hp.studentid
INNER JOIN halls h
on hp.hallid = h.hallid
Based on your request for multiple halls you could do it this way. You just join on your Hall table multiple times for each room pref id:
SELECT s.StudentID
, s.FName
, s.LName
, s.Gender
, s.BirthDate
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How to convert an int to a hex string?
...hex representations of integers, so it's not entirely clear what you need. Based on the description you gave, I think one of these snippets shows what you want.
>>> chr(0x65) == '\x65'
True
>>> hex(65)
'0x41'
>>> chr(65) == '\x41'
True
Note that this is quite differen...
String contains - ignore case [duplicate]
...e Apache commons library
don't want to go with the expensive regex/Pattern based solutions,
don't want to create additional string object by using toLowerCase,
you can implement your own custom containsIgnoreCase using java.lang.String.regionMatches
public boolean regionMatches(boolean ignoreCa...
How to show changed file name only with git log? [duplicate]
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Thanks for your answers, @mvp, @xero, I get what I want base on both of your answers.
git log --name-only
or
git log --name-only --oneline
for short.
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