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cartesian product in pandas
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If you have a key that is repeated for each row, then you can produce a cartesian product using merge (like you would in SQL).
from pandas import DataFrame, merge
df1 = DataFrame({'key':[1,1], 'col1':[1,2],'col2':[3,4]})
df2 = DataFrame({'key':[1,1], 'col3':[5,6]})
merge(...
How do I output coloured text to a Linux terminal?
...33[0m\n";
Here, \033 is the ESC character, ASCII 27. It is followed by [, then zero or more numbers separated by ;, and finally the letter m. The numbers describe the colour and format to switch to from that point onwards.
The codes for foreground and background colours are:
foreground bac...
Cocoa Autolayout: content hugging vs content compression resistance priority
... ]
and you've pinned the edges to a larger superview with priority 500.
Then, if Hugging priority > 500 it'll look like this:
[Click Me]
If Hugging priority < 500 it'll look like this:
[ Click Me ]
If the superview now shrinks then, if the Compression Resistance priority &g...
Uncaught ReferenceError: jQuery is not defined [duplicate]
...y problems in rails as well. I first included bootstrap before jquery. But then the solution was including Jquery first and then bootstrap.
– The Third
Jun 7 '14 at 0:05
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Most efficient way to concatenate strings in JavaScript?
...nking about creating a dynamic array where I keep adding strings to it and then do a join. Can anyone explain and give an example of the fastest way to do this?
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static linking only some libraries
...ollowing bash script seems to do the trick:
#!/bin/bash
if [ $# -eq 0 ]; then
echo "Usage: $0 [--exclude <lib_name>]. . . <link_command>"
fi
exclude=()
lib_path=()
while [ $# -ne 0 ]; do
case "$1" in
-L*)
if [ "$1" == -L ]; then
shift
...
Long list of if statements in Java
...nts Command {
void exec() {
// ...
}
}
// etc etc
then build a Map<String,Command> object and populate it with Command instances:
commandMap.put("A", new CommandA());
commandMap.put("B", new CommandB());
then you can replace your if/else if chain with:
commandMap.g...
Include jQuery in the JavaScript Console
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Run this in your browser's JavaScript console, then jQuery should be available...
var jq = document.createElement('script');
jq.src = "https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js";
document.getElementsByTagName('head')[0].appendChild(jq);
// ... give ...
release Selenium chromedriver.exe from memory
...ixtureSetup method's fail -> you create the browser, do some stuff, and then run the test. If something goes wrong when "you do some stuff", that's it, the process is staying there.
– Arran
Jan 24 '14 at 15:23
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Why can't I define a default constructor for a struct in .NET?
... Now they could have allowed parameterless constructors to be defined, but then not required that constructor to be executed in all cases - but that would have led to more confusion. (Or at least, so I believe the argument goes.)
EDIT: To use your example, what would you want to happen when someone...