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What is a lambda (function)?
For a person without a comp-sci background, what is a lambda in the world of Computer Science?
23 Answers
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Is there a good reason I see VARCHAR(255) used so often (as opposed to another length)?
... seen text fields defined as VARCHAR(255) as kind of the default for "shortish" text. Is there any good reason that a length of 255 is chosen so often, other than being a nice round number ? Is it a holdout from some time in the past when there was a good reason (whether or not it applies today)?...
Selecting multiple columns in a pandas dataframe
... slice out, you can just return a view of only those columns by passing a list into the __getitem__ syntax (the []'s).
df1 = df[['a', 'b']]
Alternatively, if it matters to index them numerically and not by their name (say your code should automatically do this without knowing the names of the first...
Is a colon `:` safe for friendly-URL use?
...ecify application sections as words separated by slashes. Specifically, this is in GWT, so the relevant parts of the URL will be in the hash (which will be interpreted by a controller layer on the client-side):
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How to measure time taken by a function to execute
I need to get execution time in milliseconds.
28 Answers
28
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Is there a way to iterate over a range of integers?
Go's range can iterate over maps and slices, but I was wondering if there is a way to iterate over a range of numbers, something like this:
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Is well formed without a ?
Is it valid to have <input> without it being in a <form> ?
7 Answers
7
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How to check if type of a variable is string?
Is there a way to check if the type of a variable in python is a string , like:
20 Answers
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How to use OpenFileDialog to select a folder?
... the FolderBrowserDialog class:
Prompts the user to select a folder. This class cannot be inherited.
Example:
using(var fbd = new FolderBrowserDialog())
{
DialogResult result = fbd.ShowDialog();
if (result == DialogResult.OK && !string.IsNullOrWhiteSpace(fbd.SelectedPath))
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Does the 'mutable' keyword have any purpose other than allowing the variable to be modified by a con
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It allows the differentiation of bitwise const and logical const. Logical const is when an object doesn't change in a way that is visible through the public interface, like your locking example. Another example would be a class that computes a value the first ...