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java.sql.SQLException: - ORA-01000: maximum open cursors exceeded
...the maximum-open-cursors error, is an extremely common error in Oracle database development. In the context of Java, it happens when the application attempts to open more ResultSets than there are configured cursors on a database instance.
Common causes are:
Configuration mistake
You have more ...
What is the difference between And and AndAlso in VB.NET?
In VB.NET, what is the difference between And and AndAlso ? Which should I use?
11 Answers
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Passing a String by Reference in Java?
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You have three options:
Use a StringBuilder:
StringBuilder zText = new StringBuilder ();
void fillString(StringBuilder zText) { zText.append ("foo"); }
Create a container class and pass an instance of the container to your method:
public class Container { pu...
C++ mark as deprecated
I have a method in an interface that I want to deprecate with portable C++.
When I Googled for this all I got was a Microsoft specific solution; #pragma deprecated and __declspec(deprecated) .
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C# List to string with delimiter
...y anymore, since there is an overload of String.Join that takes an IEnumerable<string>.
Results:
John, Anna, Monica
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JavaScript arrays braces vs brackets
What is the difference between each of the following array definitions.
2 Answers
2
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“Too many values to unpack” Exception
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That exception means that you are trying to unpack a tuple, but the tuple has too many values with respect to the number of target variables. For example: this work, and prints 1, then 2, then 3
def returnATupleWithThreeValues():
return (1,2,3)
a,b,c = returnATupleWithThreeValues...
关于App Inventor 2颜色积木，社区里追问最多的8个问题 - App应用开发 - 清...
...找到"合成颜色"块，拖出来，往里面塞一个包含RGB或RGBA值的列表就行。比如列表[255, 0, 0]就是纯红，[0, 255, 0]是纯绿。
方法二：知道颜色数字直接填。 App Inventor 2内部把颜色存成一个整数——比如红色是-65536。如果你在...
How to replace multiple substrings of a string?
...atest versions
pattern = re.compile("|".join(rep.keys()))
text = pattern.sub(lambda m: rep[re.escape(m.group(0))], text)
For example:
>>> pattern.sub(lambda m: rep[re.escape(m.group(0))], "(condition1) and --condition2--")
'() and --text--'
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Defining private module functions in python
...cores (w/o trailing underscores) carry the message even more forcefully... but, in the end, it still depends on social convention and consensus: Python's introspection is forceful enough that you can't handcuff every other programmer in the world to respect your wishes.
((Btw, though it's a closely...