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How to create default value for function argument in Clojure
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A function can have multiple signatures if the signatures differ in arity. You can use that to supply default values.
(defn string->integer
([s] (string->integer s 10))
([s base] (Integer/parseInt s base)))
Note t...
Rails has_and_belongs_to_many migration
I have two models restaurant and user that I want to perform a has_and_belongs_to_many relationship.
4 Answers
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Can I use git diff on untracked files?
...The upshot is that your "untracked" file now becomes a modification to add all the content to this zero-length file, and that shows up in the "git diff" output.
git diff
echo "this is a new file" > new.txt
git diff
git add -N new.txt
git diff
diff --git a/new.txt b/new.txt
index e69de29..3b2ae...
What does principal end of an association means in 1:1 relationship in Entity framework
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In one-to-one relation one end must be principal and second end must be dependent. Principal end is the one which will be inserted first and which can exist without the dependent one. Dependent end is the one which must be inserted after the principal becau...
Can I find out the return value before returning while debugging in Intellij?
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There seems to be a couple ways you can do this. The first one involves setting up the breakpoint on the method signature, in your case you would setup a breakpoint on Object method(){ . This will allow you to watch for the entrance and exit of...
Difference between Lookup() and Dictionary(Of list())
I'm trying to wrap my head around which data structures are the most efficient and when / where to use which ones.
6 Answer...
Scrollable Menu with Bootstrap - Menu expanding its container when it should not
I tried this method ( their fiddle ) to enable scrollable menu with Bootstrap, but with that approach, the scrollable menu expands its container -- fiddle -- the non-scrollable menu, correctly, does not do this.
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Cancellation token in Task constructor: why?
Certain System.Threading.Tasks.Task constructors take a CancellationToken as a parameter:
4 Answers
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How do I use Node.js Crypto to create a HMAC-SHA1 hash?
I want to create a hash of I love cupcakes (signed with the key abcdeg )
3 Answers
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Forward declaring an enum in C++
...can't know the storage required for the enum variable. C++ Compiler's are allowed to specify the actual storage space based on the size necessary to contain all the values specified. If all that is visible is the forward declaration, the translation unit can't know what storage size will have been...