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How to re-raise an exception in nested try/except blocks?
I know that if I want to re-raise an exception, I simple use raise without arguments in the respective except block. But given a nested expression like
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What happens if you don't commit a transaction to a database (say, SQL Server)?
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edited Jul 1 '19 at 12:23
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VIM + Syntastic: how to disable the checker?
I'm using Syntastic which is enabled for my HTML files. Since I have a very big file with "validator w3" checkers enabled, GVIM or VIM became very slow while saving the file (:w).
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npm windows install globally results in npm ERR! extraneous
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npm ERR! extraneous means a package is installed but is not listed in your project's package.json.
Since you're listing packages that have been installed globally, it's going to give you a lot of extraneous errors that can be simply ignored because most things...
How to select a drop-down menu value with Selenium using Python?
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Unless your click is firing some kind of ajax call to populate your list, you don't actually need to execute the click.
Just find the element and then enumerate the options, selecting the option(s) you want.
Here is an example:
from seleniu...
R programming: How do I get Euler's number?
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The R expression
exp(1)
represents e, and
exp(2)
represents e^2.
This works because exp is the exponentiation function with base e.
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Undefined symbols for architecture arm64
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edited Sep 21 '17 at 1:27
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Remove the last three characters from a string
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myString.Substring(myString.Length-3)
Retrieves a substring from this instance. The substring starts at a
specified character position. MSDN
Edit, for updated post
Remove last 3 characters from string [Updated question]
To remove the last three characters from the string you can us...
How to set a default value for a datetime column to record creation time in a migration?
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This is supported now in Rails 5.
Here is a sample migration:
class CreatePosts < ActiveRecord::Migration[5.0]
def change
create_table :posts do |t|
t.datetime :modified_at, default: -> { 'CURRENT_TIMESTAMP...
How do I make a matrix from a list of vectors in R?
Goal: from a list of vectors of equal length, create a matrix where each vector becomes a row.
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