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Transactions in .net
...e ambient transaction without us having to pass anything in.
If your code errors, Dispose() will be called without Complete(), so it will be rolled back. The expected nesting etc is supported, although you can't roll-back an inner transaction yet complete the outer transaction: if anybody is unhapp...
Why doesn't Python have a sign function?
...m "value"; -0.0 is a negative number, even if that seems an implementation error. Simply using cmp() will give the desired results, probably for nearly every case anyone would care about: [cmp(zero, 0) for zero in (0, 0.0, -0.0, -4, 5)] ==> [0, 0, 0, -1, 1].
– pythonlarry
...
Do declared properties require a corresponding instance variable?
...ble with the property’s type, it is used—otherwise, you get a compiler error.
For the modern runtimes (see “Runtime Versions and Platforms” in Objective-C Runtime Programming Guide), instance variables are synthesized as needed. If an instance variable of the same name already exists, it i...
PHP Foreach Pass by Reference: Last Element Duplicating? (Bug?)
...
The correct behaviour of PHP sould be a NOTICE error in my oppinion.
If a referenced variable created in a foreach loop is used outside the loop it should cause a notice.
Very easy to fall for this behaviour, very difficult to spot it when it happened.
And no developer is...
“Debug only” code that should run only when “turned on”
...e] is in the System.Diagnostics; namespace. I stumbled a bit when I got:
Error 2 The type or namespace name 'ConditionalAttribute' could not be found (are you missing a using directive or an assembly reference?)
after using it for the first time (I thought it would have been in System).
...
How I can I lazily read multiple JSON values from a file/stream in Python?
... yield obj
return
except json.JSONDecodeError as e:
f.seek(start_pos)
json_str = f.read(e.pos)
obj = json.loads(json_str)
start_pos += e.pos
yield obj
Edit: just noticed that this wi...
Using an ORM or plain SQL? [closed]
... I was saying: even the most basic scenarios can potentially be subject to errors in different DBMSes - for instance, different handling of NULLs.
– Anton Gogolev
Jan 30 '09 at 8:17
...
How to read XML using XPath in Java
... var
} catch (SAXParseException err) {
System.out.println ("** Parsing error" + ", line " + err.getLineNumber () + ", uri " + err.getSystemId ());
System.out.println(" " + err.getMessage ());
} catch (SAXException e) {
Exception x = e.getException ();
((x == null) ? e : x).printStack...
How to extract the decision rules from scikit-learn decision-tree?
...-- in the code below have since been updated in walkthrough link after the errors were pointed out in pull requests #8653 and #10951. It's much easier to follow along now.
sample_id = 0
node_index = node_indicator.indices[node_indicator.indptr[sample_id]:
node_i...
py2exe - generate single executable file
...he setup.py file and I write \'file_resources': [('txt2.txt')] it gives me error (the file that I want to embled in my .exe is named txt2 and it's a .txt file)
– VinceLomba
Sep 27 '15 at 8:27
...