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Efficiently checking if arbitrary object is NaN in Python / numpy / pandas?
...rrays use np.nan to designate missing values. As I iterate over the data set, I need to detect such missing values and handle them in special ways.
...
Is it possible to declare two variables of different types in a for loop?
...i < N; ++i, f += 1.5) {
// ...
}
The above will give you:
int i set to 1
double f set to 1.0
std::string s set to "ab"
Make sure to #include <tuple> for this kind of declaration.
You can specify the exact types inside the tuple by typing them all out as I have with the std::strin...
Convert Array to Object
...
Oriol, is there a way to set a fixed key instead of 0 & 1?
– Menai Ala Eddine - Aladdin
Apr 24 at 0:00
...
Using property() on classmethods
... with two class methods (using the classmethod() function) for getting and setting what is essentially a static variable. I tried to use the property() function with these, but it results in an error. I was able to reproduce the error with the following in the interpreter:
...
How to check sbt version?
...a multi-module project for each module.
$ sbt 'inspect sbtVersion'
[info] Set current project to jacek (in build file:/Users/jacek/)
[info] Setting: java.lang.String = 0.13.1
[info] Description:
[info] Provides the version of sbt. This setting should be not be modified.
[info] Provided by:
[info]...
What exactly does git rebase --skip do?
...e to any file will not make it into your target branch). Easiest way is to set up a simple git repository with two branches, several commits on each of them and then try to rebase and skip a commit (you can use git rebase --interactive to specify which commits will be copied (pick) or skipped (skip)...
List All Redis Databases
...o it with MySQL for instance). The number of Redis databases is fixed, and set in the configuration file. By default, you have 16 databases. Each database is identified by a number (not a name).
You can use the following command to know the number of databases:
CONFIG GET databases
1) "databases"
...
How to style a JSON block in Github Wiki?
...
}
Result
If you want to have keys a different colour to the parameters, set your language as yaml
@Ankanna's answer gave me the idea of going through github's supported language list and yaml was my best find.
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How can I update npm on Windows?
... new best way to upgrade npm on Windows.
Run PowerShell as Administrator
Set-ExecutionPolicy Unrestricted -Scope CurrentUser -Force
npm install -g npm-windows-upgrade
npm-windows-upgrade
Note: Do not run npm i -g npm. Instead use npm-windows-upgrade to update npm going forward. Also if you run t...
MySQL ON DUPLICATE KEY UPDATE for multiple rows insert in single query
...AS Tg
using @source as Sc
on tg.namet=sc.name
when matched then update
set tg.age=sc.age
when not matched then
insert (name, age) VALUES
(SC.name, sc.age);
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