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How do I execute inserts and updates in an Alembic upgrade script?
...al models directly will cause problems with missing columns, invalid data, etc. It's clearer to explicitly state exactly what columns and models you will use in the migration.
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How do I use extern to share variables between source files?
...er links unless you override the
default with -fcommon (or use attributes, etc — see the link).
The next two files complete the source for prog2:
prog2.h
extern void dec(void);
extern void put(void);
extern void inc(void);
prog2.c
#include "prog2.h"
#include <stdio.h>
int main(void)
{
...
Backing beans (@ManagedBean) or CDI Beans (@Named)?
...ed artifact like @WebListener, @WebFilter, @WebServlet, @Path, @Stateless, etc and even a JSF @ManagedBean. From the other side on, @ManagedProperty does not work inside a @Named or any other container managed artifact. It works really only inside @ManagedBean.
Another difference is that CDI actuall...
Five equal columns in twitter bootstrap
...is make use of Bootstrap's mixin functions make-md-column, make-sm-column, etc.
LESS:
.col-lg-2-4{
.make-lg-column(2.4)
}
.col-md-2-4{
.make-md-column(2.4)
}
.col-sm-2-4{
.make-sm-column(2.4)
}
SASS:
.col-lg-2-4{
@include make-lg-column(2.4)
}
.col-md-2-4{
@include make-md-column(2.4)...
Can someone explain the traverse function in Haskell?
...sequenceA = traverse id
You can also think of sequenceA as reversing the order of two functors, e.g. going from a list of actions into an action returning a list of results.
So traverse takes some structure, and applies f to transform every element in the structure into some applicative, it then ...
I keep getting “Uncaught SyntaxError: Unexpected token o”
... working only with some files and only when loading the files in a certain order. I don't really know what caused it, but this fixed it. I changed the line above to
$('#load-file-iframe').contents().find('body').text()
once I noticed some garbage in the HTML response.
Long story short check ...
How do I check CPU and Memory Usage in Java?
... { MemoryUsage poolCollectionMemoryUsage = memoryPool.getCollectionUsage(); usedHeapMemoryAfterLastGC += poolCollectionMemoryUsage.getUsed(); } }
– danieln
Jul 1 '13 at 10:23
...
Debugging in Clojure? [closed]
...hen the programme's execution reaches that point, with all locals in scope etc. A couple of relevant links: The Clojure debug-repl, Clojure debug-repl tricks, how 'bout a debug-repl (on the Clojure Google group), debug-repl on Clojars.
swank-clojure does an adequate job of making SLIME's built-in...
jQuery Date Picker - disable past dates
...not be able to pick a date which has been past.. like yesterday day before etc. Only from today and onwards.
– Harsha M V
Dec 2 '11 at 12:55
1
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Convert Elixir string to integer or float
...ust be the string representation of a float including a decimal point. In order to parse a string without decimal point as a float then Float.parse/1 should be used. Otherwise, an ArgumentError will be raised.
But Float.parse returns a tuple of 2 elements, not the number you want, so put it into p...