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Static methods in Python?
...e able to call the method as ClassName.methodName(), as if it was a static one, and then no selfwill be provided to the method. As you said, it will still be possible to also call this method as ClassInstance.methodName(), and self will be provided as the first parameter, regardless of its name.
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How can I combine hashes in Perl?
... complex nested variables
Pitfalls
What do to when both hashes contain one or more duplicate keys
(see e.g., Perl - Merge hash containing duplicate keys)
(see e.g, Perl hashes: how to deal with duplicate keys and get possible pair)
Should a key-value pair with an empty value ever overwrite a ...
What does the “~” (tilde/squiggle/twiddle) CSS selector mean?
...edes (not necessarily immediately) the element represented by the
second one.
Consider the following example:
.a ~ .b {
background-color: powderblue;
}
<ul>
<li class="b">1st</li>
<li class="a">2nd</li>
<li>3rd</li>
<li class="b"...
Summarizing multiple columns with dplyr? [duplicate]
...it with the dplyr-syntax. I have a data frame with different variables and one grouping variable. Now I want to calculate the mean for each column within each group, using dplyr in R.
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How do I force Postgres to use a particular index?
... Agreed, Forcing postgres to do it your way usually means you've done it wrong. 9/10 Times the planner will beat anything you can come up with. The other 1 time its because you made it wrong.
– Kent Fredric
Nov 21 '08 at 19:31
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Android: alternate layout xml for landscape mode
How can I have one layout for landscape and one for portrait? I want to assume extra width and conserve vertical space when the user rotates the phone over sideways.
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Get final URL after curl is redirected
...e</A>.
</BODY></HTML>
But it doesn't go past the first one.
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Get a specific bit from byte
I have a byte, specifically one byte from a byte array which came in via UDP sent from another device. This byte stores the on/off state of 8 relays in the device.
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How do you round a float to two decimal places in jruby
... seems the original solution didn't work. That's why updated the answer as one of the suggestions.
def float_of_2_decimal(float_n)
float_n.to_d.round(2, :truncate).to_f
end
Other answers may work, if you want to have rounded numbers of 2 decimal places. But, If you want to have floating point n...
How to rename items in values() in Django?
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Has anyone found a way to do this through tables (.values(supports__through_tables))?
– François Constant
Oct 2 '14 at 6:30
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