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Splitting string into multiple rows in Oracle
I know this has been answered to some degree with PHP and MYSQL, but I was wondering if someone could teach me the simplest approach to splitting a string (comma delimited) into multiple rows in Oracle 10g (preferably) and 11g.
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@try - catch block in Objective-C
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Now I've found the problem.
Removing the obj_exception_throw from my breakpoints solved this. Now it's caught by the @try block and also, NSSetUncaughtExceptionHandler will handle this if a @try block is missing.
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How to check for valid email address? [duplicate]
...g it even a little tighter. Seems safe to limit TLD to alphanumeric right now (still haven't seen a TLD that has non-ASCII chars). Using this now: re.compile(r"[^@\s]+@[^@\s]+\.[a-zA-Z0-9]+$")
– gaefan
Aug 29 '15 at 15:39
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Namespace and class with the same name?
... fix that by fully qualifying the name:
class C { Foo.Foo foo; }
This now gives the ambiguity error “Foo in
Foo.Foo is ambiguous between Foo.Foo and Bar.Foo”. We still don’t know
what the first Foo refers to, and until we can figure that out, we
don’t even bother to try to figure out wh...
Illegal mix of collations (utf8_unicode_ci,IMPLICIT) and (utf8_general_ci,IMPLICIT) for operation '=
..., and will speed sorts up slightly.
UPDATE: utf8mb4/utf8mb4_unicode_ci is now the preferred character set/collation method. utf8_general_ci is advised against, as the performance improvement is negligible. See https://stackoverflow.com/a/766996/1432614
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How to write a:hover in inline CSS?
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You could do it at some point in the past. But now (according to the latest revision of the same standard, which is Candidate Recommendation) you can't
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impr...
Equation (expression) parser with precedence?
...l, you actually have a hope at scaling up later, showing other people you know that parsers are the domain of parsing tools.
Update:
People here have offered much sound advice. My only warning against skipping the parsing tools or just using the Shunting Yard algorithm or a hand rolled recursive...
Get all unique values in a JavaScript array (remove duplicates)
...et to store unique values. To get an array with unique values you could do now this:
var myArray = ['a', 1, 'a', 2, '1'];
let unique = [...new Set(myArray)];
console.log(unique); // unique is ['a', 1, 2, '1']
The constructor of Set takes an iterable object, like Array, and the spread ope...
Removing trailing newline character from fgets() input
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Perhaps the simplest solution uses one of my favorite little-known functions, strcspn():
buffer[strcspn(buffer, "\n")] = 0;
If you want it to also handle '\r' (say, if the stream is binary):
buffer[strcspn(buffer, "\r\n")] = 0; // works for LF, CR, CRLF, LFCR, ...
The function cou...
Elegant ways to support equivalence (“equality”) in Python classes
...(1)
n1 == n2 # False -- oops
So, Python by default uses the object identifiers for comparison operations:
id(n1) # 140400634555856
id(n2) # 140400634555920
Overriding the __eq__ function seems to solve the problem:
def __eq__(self, other):
"""Overrides the default implementation"""
if...