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Mapping many-to-many association table with extra column(s)

...ments java.io.Serializable{ private ACId id = new ACId(); private String extra; public AC(){ } public ACId getId() { return id; } public void setId(ACId id) { this.id = id; } public A getA(){ return getId().getA(); } public C...
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Difference between Char.IsDigit() and Char.IsNumber() in C#

...(c))) { File.AppendAllText("IsNumberLike.txt", string.Format("{0},{1},{2},&#{3};,{4},{5}\n", i, c, Char.GetUnicodeCategory(c), i, Char.IsNumber(c), Char.IsDigit(c))); } } } Result looks following: As you can see there is stuff that one would ...
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Grep characters before and after match?

... 3 characters before and 4 characters after $> echo "some123_string_and_another" | grep -o -P '.{0,3}string.{0,4}' 23_string_and share | improve this answer | ...
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How to document class attributes in Python? [closed]

...stantiations. There's no provision in the Python language for creating docstrings for class attributes, or any sort of attributes, for that matter. What is the expected and supported way, should there be one, to document these attributes? Currently I'm doing this sort of thing: ...
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How to increment a pointer address and pointer's value?

...str) { cout<<*str<<endl; // printing the string *str++; // incrementing the address(pointer) // check above about the prcedence and associativity } free(str[0]); free(str[1]); fr...
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How to check BLAS/LAPACK linkage in NumPy and SciPy?

...gt; import numpy as np >>> np.show_config() lapack_opt_info: extra_link_args = ['-Wl,-framework', '-Wl,Accelerate'] extra_compile_args = ['-msse3'] define_macros = [('NO_ATLAS_INFO', 3)] blas_opt_info: extra_link_args = ['-Wl,-framework', '-Wl,Accelerate'] extra_compile...
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Can I access constants in settings.py from templates in Django?

...ser, token): try: # split_contents() knows not to split quoted strings. tag_name, var = token.split_contents() except ValueError: raise template.TemplateSyntaxError, "%r tag requires a single argument" % token.contents.split()[0] return ValueFromSettings(var) cla...
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How important is the order of columns in indexes?

...mns involved. Giving that rationale, the only difference is comparing two 'strings' that differ earlier versus later in the string. This is a tiny part of the total cost. There is no "first pass / second pass", as mentioned in one Answer. So, what order should be used? Start with column(s) tested...
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How can I read SMS messages from the device programmatically in Android?

...tent://sms/inbox") to read SMS which are in inbox. // public static final String INBOX = "content://sms/inbox"; // public static final String SENT = "content://sms/sent"; // public static final String DRAFT = "content://sms/draft"; Cursor cursor = getContentResolver().query(Uri.parse("content://sms...
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What does the `forall` keyword in Haskell/GHC do?

... b) ghci> liftTup (\x -> [x]) (5, "Hello") No instance for (Num [Char]) ... ghci> -- huh? ghci> :t liftTup liftTup :: (t -> t1) -> (t, t) -> (t1, t1) "Hmm.. why does GHC infer that the tuple must contain two of the same type? Let's tell it they don't have to be" -- te...