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Hash and salt passwords in C#
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Actually this is kind of strange, with the string conversions - which the membership provider does to put them into config files. Hashes and salts are binary blobs, you don't need to convert them to strings unless you want to put...
Why doesn't adding CORS headers to an OPTIONS route allow browsers to access my API?
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To answer your main question, the CORS spec only requires the OPTIONS call to precede the POST or GET if the POST or GET has any non-simple content or headers in it.
Content-Types that require a CORS pre-flight request (the OPTIONS call) are any Content-Type except the following:
application/...
What are paramorphisms?
...foldr c n xs)
para c n [] = n
foldr c n [] = n
Some people call paramorphisms "primitive recursion" by contrast with catamorphisms (foldr) being "iteration".
Where foldr's two parameters are given a recursively computed value for each recursive subobject of the input data (here, that...
How can I read a function's signature including default argument values?
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@Spi, you are calling inspect.getargspec on a module, not a function.
– Mike Graham
Apr 20 '10 at 17:36
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find() with nil when there are no records
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Yes, just do:
Challenge.find_by_id(10)
For Rails 4 and 5:
Challenge.find_by(id: 10)
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Why no generics in Go?
... id types. Type information is preserved and can be "cast" (asserted, actually) back to its concrete type. Get the gritty details here: golang.org/ref/spec#Type_assertions
– tbone
Aug 25 '13 at 20:50
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How to import CSV file data into a PostgreSQL table?
...ason.
– alex bennett
Jul 8 '16 at 4:32
5
This is somewhat misleading: the difference between COPY...
Should I use alias or alias_method?
...s it?
– iconoclast
Feb 11 '19 at 18:32
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Get User's Current Location / Coordinates
... foxyblue
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answered Sep 6 '14 at 8:50
AnnuAnnu
4,01522 gold badges1818 ...
Android: upgrading DB version and adding new table
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1. About onCreate() and onUpgrade()
onCreate(..) is called whenever the app is freshly installed. onUpgrade is called whenever the app is upgraded and launched and the database version is not the same.
2. Incrementing the db version
You need a constructor like:
MyOpenHelp...