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MySQL - UPDATE query based on SELECT Query
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This is by far the fastest query. Edit: Having dest with 22K rows, and src with 4K rows, it took under 1 sec to complete, while the top answer over 60 sec.
– Chris Dev
Jun 19 '17 at 15:06
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Getting SyntaxError for print with keyword argument end=' '
...t instead of a new line character. In Python 2.x you would have to do this by placing a comma at the end of the print statement.
For example, when in a Python 3.x environment:
while i<5:
print(i)
i=i+1
Will give the following output:
0
1
2
3
4
Where as:
while i<5:
print(i, ...
How to split long commands over multiple lines in PowerShell
...e a very long string that you want to break up, say of HTML, you can do it by putting a @ on each side of the outer " - like this:
$mystring = @"
Bob
went
to town
to buy
a fat
pig.
"@
You get exactly this:
Bob
went
to town
to buy
a fat
pig.
And if you are using Notepad++, it will even highligh...
How do I prevent a parent's onclick event from firing when a child anchor is clicked?
...("#clickable a").click(function(e) {
e.stopPropagation();
});
As said by jQuery Docs:
stopPropagation method prevents the event from bubbling up the DOM
tree, preventing any parent handlers from being notified of the event.
Keep in mind that it does not prevent others listeners to handl...
One-liner to take some properties from object in ES 6
...nd "smelly" (as in they are a code smell), and I prefer to filter them out by default. If there's an application that needs prototype properties, well...there can be an option for that.
– Ethan Brown
Nov 24 '15 at 3:34
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Create a custom callback in JavaScript
...sCallback = (data) =>{
...
}
//trigger a event whenever you got data by
Notification.dispatch('Load data success')
Dispatcher:
class Dispatcher{
constructor(){
this.events = {}
}
dispatch(eventName, data){
const event = this.events[eventName]
if(event){
event.fire(d...
Extract a dplyr tbl column as a vector
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@nacnudus for that case you could also do group_by(column) %.% tally()
– hadley
Feb 8 '14 at 15:00
12
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How to determine programmatically whether a particular process is 32-bit or 64-bit
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Why use processHandle = Process.GetProcessById(process.Id).Handle; instead of just processHandle = process.Handle; ?
– Jonathon Reinhart
Jun 21 '14 at 15:32
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Prevent browser from loading a drag-and-dropped file
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Preventing all drag and drop operations by default might not be what you want. It's possible to check if the drag source is an external file, at least in some browsers. I've included a function to check if the drag source is an external file in this StackOverflow a...
Node.js/Express.js App Only Works on Port 3000
...ing app.set('port', process.env.PORT || 3001) in app.js will be overridden by a similar statement in bin/www.
I just changed the statement in bin/www.
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