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Return type of '?:' (ternary conditional operator)
...ue as the result of this conversion would not be an lvalue.
ISO/IEC 14882:2011 references:
3.10 [basic.lval] Lvalues and rvalues (about value categories)
5.15 [expr.cond] Conditional operator (rules for what type and value category a conditional expression has)
5.17 [expr.ass] Assignment and compou...
How to get nice formatting in the Rails console
...--------------------+---------------------+
| 1 | White | White | 2009-06-10 04:02:44 | 2009-06-10 04:02:44 |
+----+-------+---------------+---------------------+---------------------+
1 row in set
=> true
You can learn more about hirb at its homepage.
...
iPhone : How to detect the end of slider drag?
...ok JarcRok Jarc
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fatal error: Python.h: No such file or directory
...ll python3.6-dev
– landrykapela
Sep 20 '18 at 7:05
23
Likewise with sudo apt-get install python3....
How to send a “multipart/form-data” with requests in python?
...ttpbin.org/post', files=dict(foo='bar'))
>>> response.status_code
200
and httpbin.org lets you know what headers you posted with; in response.json() we have:
>>> from pprint import pprint
>>> pprint(response.json()['headers'])
{'Accept': '*/*',
'Accept-Encoding': 'gzip...
How do I format a date in Jinja2?
... and native?
– gwg
May 18 '16 at 12:20
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Generate a random point within a circle (uniformly)
...ther number.
– sigfpe
Oct 22 '12 at 20:30
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show 15 more c...
Difference between JSON.stringify and JSON.parse
...e pairings.
– hunterc
Nov 21 '13 at 20:36
4
I have found it very useful for debugging in the cons...
How to convert CSV file to multiline JSON?
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edited Jun 20 at 9:12
Community♦
111 silver badge
answered Jan 6 '18 at 19:58
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Run a single migration file
...directly out of the ruby file:
rails console
>> require "db/migrate/20090408054532_add_foos.rb"
>> AddFoos.up
Note: newer versions of rails may require AddFoos.new.up rather than AddFoos.up.
An alternative way (without IRB) which relies on the fact that require returns an array of cl...