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How do I check if a string is a number (float)?
...e to check that the second statement in the try clause cannot raise a ValueError: granted, this does not require too much time or brain power, but why use any when none is needed?
– Eric O Lebigot
Jul 5 '13 at 8:21
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Xcode changes unmodified storyboard and XIB files
...ller label end tag and save the file. Now run it and look at the warning. Error says end tag is not correct which created from line 23. In line 23 , we see a label constrains is set with no end tag. That's the problem. Now we put the end tag and build the project. After setting end tag, we can view...
Insert new column into table in sqlite?
... In my tests, line INSERT INTO t1 SELECT a,c FROM t1_backup; causes the error: "table t1 has 3 columns but 2 values were supplied: INSERT INTO t1 SELECT a,c FROM t1_backup;". The correct line should be INSERT INTO t1 (a,c) SELECT a,c FROM t1_backup;
– JnLlnd
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Python “raise from” usage
...ry:
... print(1 / 0)
... except Exception as exc:
... raise RuntimeError("Something bad happened") from exc
...
Traceback (most recent call last):
File "<stdin>", line 2, in <module>
ZeroDivisionError: int division or modulo by zero
The above exception was the direct cause of ...
How do I remove a submodule?
... and try to add what was a submodule as a regular directory, you would get error message like:
git add mysubmodule/file.txt
Path 'mysubmodule/file.txt' is in submodule 'mysubmodule'
Note: since Git 2.17 (Q2 2018), git submodule deinit is no longer a shell script.
It is a call to a C function.
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How can I get Visual Studio 2008 Windows Forms designer to render a Form that implements an abstract
...an easily remind me to override them, without having the compiler to throw error. For example, if the supposedly abstract method is to return the title of the page, then I will make it return a string "Please change the title".
– Darius
Sep 12 '19 at 7:56
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vs in Generics
...s added to C# and VB.NET (in .NET 4 with VS 2010), this was a compile time error.
After .NET 4, IEnumerable<T> was marked covariant, and became IEnumerable<out T>. Since IEnumerable<out T> only uses the elements within it, and never adds/changes them, it's safe for it to treat an...
C#: Raising an inherited event
...the overriden method, you can't raise the event, since you'll get the same error as the one mentioned by TS.
– Frederik Gheysels
Apr 16 '09 at 14:31
2
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The SQL OVER() clause - when and why is it useful?
...t_id
-------- ---------- ------------ ----------
1 2011-05-02 1 5
1 2011-05-02 2 4
1 2011-05-02 3 7
2 2011-05-12 1 8
2 2011-05-12 2 1
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Assigning a variable NaN in python without numpy
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answered Oct 15 '13 at 6:05
Michael0x2aMichael0x2a
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