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Convert timestamp to date in MySQL query
...ay be looking for '%Y-%m-%d' as you'd format it in PHP (date('Y-m-d',$row->user_created_at)) - this (both variants, SQL and PHP) shows up as 2018-11-06
– Chris S.
Nov 7 '18 at 9:19
...
Is there a way to collapse all code blocks in Eclipse?
...Shift+NUM_KEYPAD_DIVIDE.
You can change it to something else via Window -> Preferences, search for "Keys", then for "Collapse All".
To open all code blocks the shortcut is Ctrl+Shift+NUM_KEYPAD_MULTIPLY.
In the Eclipse extension PyDev, close all code blocks is
Ctrl + 9
To open all blocks, is...
how to write setTimeout with params by Coffeescript
...the Node.js API, for instance. So with that in mind:
delay = (ms, func) -> setTimeout func, ms
delay 1000, -> something param
Granted, this adds the overhead of an extra function call to every setTimeout you make; but in today's JS interpreters, the performance drawback is insignificant un...
What is the difference between JOIN and UNION?
...ts it -- completely different operations. Trivial example of UNION:
mysql> SELECT 23 AS bah
-> UNION
-> SELECT 45 AS bah;
+-----+
| bah |
+-----+
| 23 |
| 45 |
+-----+
2 rows in set (0.00 sec)
similary trivial example of JOIN:
mysql> SELECT * FROM
-> (SELECT 23 AS...
Best implementation for hashCode method for a collection
...r int: calculate (int)f;
If the field f is a long: calculate (int)(f ^ (f >>> 32));
If the field f is a float: calculate Float.floatToIntBits(f);
If the field f is a double: calculate Double.doubleToLongBits(f) and handle the return value like every long value;
If the field f is an object: ...
Gradle alternate to mvn install
... {
mavenLocal()
}
dependencies {
compile "foo:sdk:1.0"
}
$sdk> gradle install
$example> gradle build
share
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pycharm running way slow
...on 5. But now with version 2016.1.2 the IDE seems to randomly start using >50% even with all editor files closed and nothing running and in Power Save mode, and it carries on indefinitely until I close PyCharm, and soon starts again on resuming it. Any idea? Memory is about 200MB (of 725). I'm ru...
Float vs Decimal in ActiveRecord
...xactly.
That's why there is a Decimal format. If you do this:
irb:001:0> "%.47f" % (1.0/10)
=> "0.10000000000000000555111512312578270211815834045" # not "0.1"!
whereas if you just do
irb:002:0> (1.0/10).to_s
=> "0.1" # the interprer rounds the number for you
So if you are dealing...
What are the differences between the threading and multiprocessing modules?
...+-----------+--------------------------------------+
+ Time --> +
+--------------------------------------+
which would show that:
threads are fully serialized by the GIL
processes can run in parallel
...
Difference between this and self in self-type annotations?
...the type of this in class A.
The first two variants
trait A { self: B => ... }
trait A { foo: B => ... }
introduce self (respectively, foo) as an alias for this in trait A. This is useful for accessing the this reference from an inner class. I.e. you could then use self instead of A.this ...