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Difference between static and shared libraries?
...cost for execution of the functions" - that's possible (if function groups/ordering have been optimised for cache locality in the static link, or due to oddities in OS/loader/compiler/architecture like cross-segment/large-pointer perf. penalties), but on many architectures/compiler-settings the dyna...
Rails “validates_uniqueness_of” Case Sensitivity
...hreaded server. That's because you might get this sequence of events (the order is important):
Process A gets a request to create a new user with the name 'foo'
Process B does the same thing
Process A validates the uniqueness of 'foo' by asking the DB if that name exists yet and the DB says the n...
Why should you use an ORM? [closed]
...sily formed in declarative constraints. E.g. "customer gets 10% off entire order the first time they buy more than three pairs of slacks from the same brand." How would you put that business rule into the database (keep in mind an answer involving stored procedures is clunky).
–...
How to find out which fonts are referenced and which are embedded in a PDF document
We have a little problem with fonts in PDF documents. In order to put the finger on the problem I'd like to inspect, which fonts are actually embedded in the pdf document and which are only referenced. Is there an easy (and cheap as in free) way to do that?
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Warning: push.default is unset; its implicit value is changing in Git 2.0
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Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
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What is the difference between `raise “foo”` and `raise Exception.new(“foo”)`?
...xception in your code, this code will not catch it:
begin
rescue
end
In order to catch the Exception you will have to do this:
begin
rescue Exception
end
This means that in a sense, an Exception is a "worse" error than a RuntimeError, because you have to do more work to recover from it.
So wh...
Why does Python code use len() function instead of a length method?
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len, str, etc. can be used with higher-order functions like map, reduce, and filter without the need to define a function or lambda just to call a method. Not everything revolves around OOP, even in Python.
– Evicatos
Nov 7 '...
Why Response.Redirect causes System.Threading.ThreadAbortException?
... handler is ugly because you are terminating a partially generated page in order to generate a different page. MVC does not have this problem since the control flow is separate from rendering views, so you can do a clean redirect by simply returning a RedirectAction in the controller, without genera...
Execute SQLite script
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In order to execute simple queries and return to my shell script, I think this works well:
$ sqlite3 example.db 'SELECT * FROM some_table;'
share
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Spring Expression Language (SpEL) with @Value: dollar vs. hash ($ vs. #)
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In order to successfully access property values using the SpEL syntax, use the format "#{'${property}'}"
– Brice Roncace
Apr 6 '16 at 20:23
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