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Why are exclamation marks used in Ruby methods?
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From themomorohoax.com:
A bang can used in the below ways, in order of my personal preference.
1) An active record method raises an error if the method does not do
what it says it will.
2) An active record method saves the record or a method saves an
object (e.g. strip!)
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Convert date to datetime in Python
... also feel the same way about the timetuple method and the reliance on the ordering.
In my opinion, the most readable, explicit way of doing this without relying on the reader to be very familiar with the datetime module API is:
from datetime import date, datetime
today = date.today()
today_with_t...
Make an existing Git branch track a remote branch?
...uture. git branch [-u|--set-upstream-to] has been introduced with a saner order of arguments.
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It was tempting to say git branch --set-upstream origin/master, but that tells Git to arrange the local branch "origin/master" to integrate with the currently checked out branch, which is hig...
How to sum a variable by group
... Is there anyway of maintaining an ID column? Say the categories are ordered and the ID column is 1:nrow(df), is it possible to keep the starting position of each category after aggregating? So the ID column would end up as, for example, 1, 3, 4, 7 after collapsing with aggregate. In my case ...
How to check type of files without extensions in python?
...tempt to classify it. There are three
sets of tests, performed in this order: filesystem tests, magic number
tests, and language tests. The first test that succeeds causes the
file type to be printed.
You would need to run the file command with the subprocess module and then parse th...
difference between primary key and unique key
... clustered index: the rows are stored physically on the disk in the same order as the index
– Duy Đặng
Jan 15 '18 at 4:08
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Is there a function to make a copy of a PHP array to another?
... For your case,
global $foo;
$foo = $obj->bar;
should work fine.
In order to get burned, I would think you'd either have to have been using references or expecting objects inside the arrays to be cloned.
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missing private key in the distribution certificate on keychain
... Basically, we have a company developer account (not enterprise) and so in order to submit our app, I requested from our team lead to send me the distribution certificate and create and send me a distribution provisioning profile.
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How do I override nested NPM dependency versions?
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You can use npm shrinkwrap functionality, in order to override any dependency or sub-dependency.
I've just done this in a grunt project of ours. We needed a newer version of connect, since 2.7.3. was causing trouble for us. So I created a file named npm-shrinkwrap.json:...
Create an instance of a class from a string
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@TaW - in order to use a class instance you will need to have some knowledge of what it is going to do - otherwise you won't be able to use it. The most common use case for this would be casting to some interface which give you a prede...