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Don't understand why UnboundLocalError occurs (closure) [duplicate]
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Python doesn't have variable declarations, so it has to figure out the scope of variables itself. It does so by a simple rule: If there is an assignment to a variable inside a function, that variable is considered local.[1] Thus, the line
counter += 1
implicitly ma...
How to convert a string from uppercase to lowercase in Bash? [duplicate]
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edited Oct 24 '14 at 10:19
Danny Staple
5,78222 gold badges3737 silver badges5454 bronze badges
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ERROR: Error 1005: Can't create table (errno: 121)
I have troubles with forward engineering my MySQL database into WAMP server..
I was going to post an image of the schema but as this is my first post I can't.
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How do I delete from multiple tables using INNER JOIN in SQL server
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on d.id = t2.id;
delete from t3
from table3 as t3 ...
commit transaction;
Obviously you can do an 'output deleted.' on the second delete as well, if you needed something to join on for the third table.
As a side note, you can also do inserted.* on an insert statement, and both in...
How do I close a single buffer (out of many) in Vim?
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A word of caution: "the w in bw does not stand for write but for wipeout!"
More from manuals:
:bd
Unload buffer [N] (default: current
buffer) and delete it from
the buffer list. If the buffer was changed, this fails,
unless when [!]...
Difference between Control Template and DataTemplate in WPF
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Typically a control is rendered for its own sake, and doesn't reflect underlying data. For example, a Button wouldn't be bound to a business object - it's there purely so it can be clicked on. A ContentControl or ListBox, however, generally appear so that they ...
How to scale down a range of numbers with a known min and max value
...to figure out how to take a range of numbers and scale the values down to fit a range. The reason for wanting to do this is that I am trying to draw ellipses in a java swing jpanel. I want the height and width of each ellipse to be in a range of say 1-30. I have methods that find the minimum and ...
How to concatenate two strings in C++?
...lo";
std::string greet = s + " World"; //concatenation easy!
Easy, isn't it?
Now if you need char const * for some reason, such as when you want to pass to some function, then you can do this:
some_c_api(s.c_str(), s.size());
assuming this function is declared as:
some_c_api(char const *inp...
Add Variables to Tuple
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edited Dec 16 '19 at 10:31
John R Perry
2,96011 gold badge2626 silver badges4444 bronze badges
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Get Substring - everything before certain char
...lass Program
{
static void Main(string[] args)
{
Console.WriteLine("223232-1.jpg".GetUntilOrEmpty());
Console.WriteLine("443-2.jpg".GetUntilOrEmpty());
Console.WriteLine("34443553-5.jpg".GetUntilOrEmpty());
Console.ReadKey();
}
}
static class Helper
{
...