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Pass ruby script file to rails console
...y, I can avoid having to enter any interactive irb or rails c and can test my script.rb from the shell prompt, before eg. scheduling it in crontab.
It smoothly supports command-line parameters, too, and minimizes the levels of wrappers before getting to your code.
CREDIT (also shows a Rails 2 exam...
surface plots in matplotlib
...-D arrays instead of the 2-D arrays that matplotlib's plot_surface wants. My data happened to be in a pandas.DataFrame so here is the matplotlib.plot_surface example with the modifications to plot 3 1-D arrays.
from mpl_toolkits.mplot3d import Axes3D
from matplotlib import cm
from matplotlib.tic...
GROUP BY with MAX(DATE) [duplicate]
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@Ruslan, Yea I was pitying MySQL devs.
– Pacerier
Jul 4 '15 at 12:01
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show 6 more comments
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Where does Java's String constant pool live, the heap or the stack?
...n't get GC'ed. It does, typically when the JVM decides to run a Full GC. My point is that String literals will be reachable as long as the code that uses them is reachable, and the code will be reachable as long as the code's classloader is reachable, and for the default classloaders, that means "...
How to round up a number in Javascript?
...). The rest is just to deal with decimals. To save others the time it took my brain to get to that!
– Nigel B. Peck
Apr 30 '16 at 10:59
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Must Dependency Injection come at the expense of Encapsulation?
... view, the encapsulation is perfect.
This is an opinion of course, but to my mind DI doesn't necessarily violate encapsulation and in fact can help it by centralising all of the necessary knowledge of internals into one place. Not only is this a good thing in itself, but even better this place is ...
using gitignore to ignore (but not delete) files
I have a tmp directory in my git repo I'd like to still exist, but be ignored. I added it to .gitignore , but git status still tells me about changes to files in that directory. I tried git rm -r --cached , but that removes it from the remote repo. How can I stop tracking changes to this dire...
Matching an empty input box using CSS
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I want same thing, but my field is not required. is there any way to do so?
– Zahidul Islam Ruhel
Nov 9 '17 at 15:13
1
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How do I replace text inside a div element?
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@Drako The original question and my answer from seven years ago are for PrototypeJS not jQuery.
– John Topley
Dec 16 '15 at 10:00
add...
Check if a value exists in ArrayList
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Please refer to my answer on this post.
There is no need to iterate over the List just overwrite the equals method.
Use equals instead of ==
@Override
public boolean equals (Object object) {
boolean result = false;
if (object =...