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Delete first character of a string in Javascript
I want to delete the first character of a string, if the first character is a 0. The 0 can be there more than once.
14 Ans...
Why 0 is true but false is 1 in the shell?
The above will output 1 , which is contradictory with all other programming languages I know.
10 Answers
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Two-dimensional array in Swift
I get so confused about 2D arrays in Swift. Let me describe step by step. And would you please correct me if I am wrong.
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Why must a nonlinear activation function be used in a backpropagation neural network? [closed]
I've been reading some things on neural networks and I understand the general principle of a single layer neural network. I understand the need for aditional layers, but why are nonlinear activation functions used?
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Interpolating a string into a regex
I need to substitute the value of a string into my regular expression in Ruby. Is there an easy way to do this? For example:
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How to print a number with commas as thousands separators in JavaScript
I am trying to print an integer in JavaScript with commas as thousands separators. For example, I want to show the number 1234567 as "1,234,567". How would I go about doing this?
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Pandas - How to flatten a hierarchical index in columns
I have a data frame with a hierarchical index in axis 1 (columns) (from a groupby.agg operation):
17 Answers
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clearing a char array c
I thought by setting the first element to a null would clear the entire contents of a char array.
16 Answers
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How to get the source directory of a Bash script from within the script itself?
How do I get the path of the directory in which a Bash script is located, inside that script?
67 Answers
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What's the best way to send a signal to all members of a process group?
I want to kill a whole process tree. What is the best way to do this using any common scripting languages? I am looking for a simple solution.
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