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Python: using a recursive algorithm as a generator
...ion to generate certain sequences with nontrivial constraints. The problem came with a natural recursive solution. Now it happens that, even for relatively small input, the sequences are several thousands, thus I would prefer to use my algorithm as a generator instead of using it to fill a list with...
What is the C# equivalent to Java's isInstance()?
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@TimothyGonzalez Because it does something different. It tests whether two variables have the same type. is required a type name, by contrast. This is what OP wanted: the equivalent of Java's isInstance. The other answer is simply wrong despite...
How does one use rescue in Ruby without the begin and end block
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A method "def" can serve as a "begin" statement:
def foo
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rescue
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end
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Rails: How to list database tables/objects using the Rails console?
...at databases/objects are available to you in the Rails console. I know you can see them using other tools, I am just curious.
Thanks.
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How to indicate param is optional using inline JSDoc?
According to the JSDoc wiki for @param you can indicate a @param is optional using
4 Answers
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TypeError: sequence item 0: expected string, int found
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Can also use .join(map(str, value_list))
– BallpointBen
May 17 '18 at 13:37
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Count cells that contain any text
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You can pass "<>" (including the quotes) as the parameter for criteria. This basically says, as long as its not empty/blank, count it. I believe this is what you want.
=COUNTIF(A1:A10, "<>")
Otherwise you can us...
Python argparse ignore unrecognised arguments
Optparse, the old version just ignores all unrecognised arguments and carries on. In most situations, this isn't ideal and was changed in argparse. But there are a few situations where you want to ignore any unrecognised arguments and parse the ones you've specified.
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How to add item to the beginning of List?
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Since .NET 4.7.1, you can use Append() and Prepend(). Check this answer
– aloisdg moving to codidact.com
Jan 8 at 10:13
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click or change event on radio using jquery
...'t work for me when a single radio is targeted and selecting another radio causes the other to deselect.
– Doug Amos
Jul 12 '13 at 8:03
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