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“for loop” with two variables? [duplicate]
...
If you want the effect of a nested for loop, use:
import itertools
for i, j in itertools.product(range(x), range(y)):
# Stuff...
If you just want to loop simultaneously, use:
for i, j in zip(range(x), range(y)):
# Stuff...
Note that if x and y are not the same length, zip ...
Function to clear the console in R and RStudio
I am wondering if there is a function to clear the console in R and, in particular, RStudio I am looking for a function that I can type into the console, and not a keyboard shortcut.
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UnboundLocalError on local variable when reassigned after first use
... variables in functions differently depending on whether you assign values to them from inside or outside the function. If a variable is assigned within a function, it is treated by default as a local variable. Therefore, when you uncomment the line you are trying to reference the local variable c...
Insert auto increment primary key to existing table
I am trying to alter a table which has no primary key nor auto_increment column. I know how to add an primary key column but I was wondering if it's possible to insert data into the primary key column automatically (I already have 500 rows in DB and want to give them id but I don't want to do it man...
Swift Bridging Header import issue
Following instructions, I've created a bridging header and added to my project. Unfortunately, the following error occurred:
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In Node.js, how do I “include” functions from my other files?
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You can require any js file, you just need to declare what you want to expose.
// tools.js
// ========
module.exports = {
foo: function () {
// whatever
},
bar: function () {
// whatever
}
};
var zemba = function () {
}
And in your app file:
// ap...
EditText maxLines not working - user can still input more lines than set
...e than 5 lines, by pressing enter/next row key. How can I limit user input to fixed amount of rows with EditText?
20 Answer...
Calling async method synchronously
...u can access the Result property of the task, which will cause your thread to block until the result is available:
string code = GenerateCodeAsync().Result;
Note: In some cases, this might lead to a deadlock: Your call to Result blocks the main thread, thereby preventing the remainder of the as...
Is there a way to change context to iframe in javascript console?
I would like to change the context of the javascript executed in the webkit developer tool/firebug console to execute its code like it is running from inside an iframe on the page.
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Scalar vs. primitive data type - are they the same thing?
In various articles I have read, there are sometimes references to primitive data types and sometimes there are references to scalars.
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