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Check empty string in Swift?
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There is now the built in ability to detect empty string with .isEmpty:
if emptyString.isEmpty {
print("Nothing to see here")
}
Apple Pre-release documentation: "Strings and Characters".
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input() error - NameError: name '…' is not defined
... your name: input("Enter your name again: ")
Enter your name again: dude
Now, when input("Enter your name: ") is executed, it waits for the user input and the user input is a valid Python function invocation and so that is also invoked. That is why we are seeing Enter your name again: prompt again...
Simple way to convert datarow array to datatable
...ecide to use this method CopyToDataTable(), you should check the array to know it has datarows or not.
if (dr.Length > 0)
DataTable dt1 = dr.CopyToDataTable();
Reference available at MSDN:
DataTableExtensions.CopyToDataTable Method (IEnumerable)
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How to determine height of UICollectionView with FlowLayout
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Whoa! For some reason, after hours of research, I now found a pretty easy answer to my question: I was completely searching in the wrong place, digging through all the documentation I could find on UICollectionView.
The simple and easy solution lies in the underlying layout...
How do I replace multiple spaces with a single space in C#?
... say "anytime you have a problem you think you need Regex to solve, well...now you've got TWO problems" <wink>
– William Madonna Jr.
Apr 6 '18 at 12:53
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Is there a “do … until” in Python? [duplicate]
...ce/generator that does not satisfy the predicate function - that's how it knows to stop taking. But if you then want to iterate over the rest thinking "now I'll get everything where the predicate was False", you'll miss the first item of those.
– PaulMcG
Jul 18...
“A project with an Output type of Class Library cannot be started directly”
...Single Startup Project
Select your Project in there and apply.
That's it. Now save and build your project. Run the project to see the output.
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Different between parseInt() and valueOf() in java?
... use this eyesore:
Integer k = Integer.valueOf(Integer.parseInt("123"))
Now, if what you want is the object and not the primitive, then using valueOf(String) may be more attractive than making a new object out of parseInt(String) because the former is consistently present across Integer, Long, Do...
Printing tuple with string formatting in Python
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I never knew why % is obsolete but I now always you str.format anyway, blindly. Nevermind that, I'm interested in what the full qualifier is, because the simple {0} isn't the full qualifier, but merely a position indicator. For an int, what I call the full quali...
Excel Date to String conversion
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Full reference to the TEXT function especially to know how to set formats: see Guidelines for date and time formats on this page office.microsoft.com/en-us/excel-help/…
– codea
Sep 9 '13 at 21:07
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