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Emacs: print key binding for a command or list all key bindings
In Emacs (GNU 23.2, *nix), how can I:
2 Answers
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Convert NSNumber to int in Objective-C
I use [NSNumber numberWithInt:42] or @(42) to convert an int to NSNumber before adding it to an NSDictionary:
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Getting number of days in a month
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You want DateTime.DaysInMonth:
int days = DateTime.DaysInMonth(year, month);
Obviously it varies by year, as sometimes February has 28 days and sometimes 29. You could always pick a particular year (leap or not) if you want ...
How to run cron job every 2 hours
How can I write a Crontab that will run my /home/username/test.sh script every 2 hours?
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How to get the last N rows of a pandas DataFrame?
...... I did forget :o
– Mike Rapadas
Jun 30 at 22:11
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How to add target=“_blank” to JavaScript window.location?
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window.location sets the URL of your current window. To open a new window, you need to use window.open. This should work:
function ToKey(){
var key = document.tokey.key.value.toLowerCase();
if (key == "smk") {
window.open('http://www...
How can I use 'Not Like' operator in MongoDB
I can use the SQL Like Operator using pymongo ,
2 Answers
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OrderBy descending in Lambda expression?
I know in normal Linq grammar, orderby xxx descending is very easy, but how do I do this in Lambda expression?
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MySQL - length() vs char_length()
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LENGTH() returns the length of the string measured in bytes.
CHAR_LENGTH() returns the length of the string measured in characters.
This is especially relevant for Unicode, in which most characters are encoded in two bytes. Or UTF-8,...
Use curly braces to initialize a Set in Python
I'm learning python, and I have a novice question about initializing sets. Through testing, I've discovered that a set can be initialized like so:
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