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generate model using user:references vs user_id:integer
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how does rails know that user_id is a foreign key referencing user?
Rails itself does not know that user_id is a foreign key referencing user. In the first command rails generate model Micropost user_id:integer it only adds a column user_i...
Convert pandas timezone-aware DateTimeIndex to naive timestamp, but in certain timezone
...mber, a quick summary of what each of these do:
>>> pd.Timestamp.now() # naive local time
Timestamp('2019-10-07 10:30:19.428748')
>>> pd.Timestamp.utcnow() # tz aware UTC
Timestamp('2019-10-07 08:30:19.428748+0000', tz='UTC')
>>> pd.Timestamp.now(tz='Europe/Brussels')...
How do I copy to the clipboard in JavaScript?
...y') return true if the document.execCommand('copy') will succeed if called now. Checking to ensure the command was called from a user-initiated thread and other requirements are met.
However as an example of browser compatibility issues, Google Chrome from ~April to ~October 2015 only returned tru...
What is the best way to ensure only one instance of a Bash script is running? [duplicate]
...ased my lockable script boilerplate (originally available at my wiki page, nowadays available as gist). Transforming that into one-instance-per-user is trivial. Using it you can also easily write scripts for other scenarios requiring some locking or synchronization.
Here is the mentioned boilerplat...
How can one pull the (private) data of one's own Android app?
... Great when you need 1 file. Been using this for database. Facing the case now where I need multiple files.
– Dave Thomas
Oct 12 '16 at 16:26
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CSS Div stretch 100% page height
...of the HTML box. You can also use height:100% on the cloud-container as it now refers to the height of the HTML tag and not the viewport.
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How to discard all changes made to a branch?
...tried git reset --hard HEAD^ and it still left a bunch of untracked files. Now to google how to remove them in one simple command.
– John Deighan
Apr 3 '18 at 14:02
add a comm...
How to add some non-standard font to a website?
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Hey guys, guess what? It's now almost 2016! It's now supported widely! Yay! Glad, I found this answer this late. Haha.
– jessica
Dec 17 '15 at 22:43
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'git add --patch' to include new files?
...vert 4: add untracked
5: patch 6: diff 7: quit 8: help
What now> a
1: another-new.java
2: new.java
Add untracked>> 2
1: another-new.java
* 2: new.java
Add untracked>>
added one path
*** Commands ***
1: status 2: update 3: revert 4: add untracked
5: pat...
Objective-C categories in static library
...ed.
Details:
I found some answers on various forums, blogs and apple docs. Now I try make short summary of my searches and experiments.
Problem was caused by (citation from apple Technical Q&A QA1490 https://developer.apple.com/library/content/qa/qa1490/_index.html):
Objective-C does not define...