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How to convert JSON to a Ruby hash
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You could also use Rails' with_indifferent_access method so you could access the body with either symbols or strings.
value = '{"val":"test","val1":"test1","val2":"test2"}'
json = JSON.parse(value).with_indifferent_access
then
json[:val] #=> "tes...
how to generate migration to make references polymorphic
...ass AddImageableToProducts < ActiveRecord::Migration
def up
change_table :products do |t|
t.references :imageable, polymorphic: true
end
end
def down
change_table :products do |t|
t.remove_references :imageable, polymorphic: true
end
end
end
...
What is the maximum depth of the java call stack?
... if we don't mention the Xss, then?
– a3.14_Infinity
Jul 4 '16 at 7:52
add a comment
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Using Vim's persistent undo?
...eep undo history across sessions by storing it in a file
if has('persistent_undo')
let myUndoDir = expand(vimDir . '/undodir')
" Create dirs
call system('mkdir ' . vimDir)
call system('mkdir ' . myUndoDir)
let &undodir = myUndoDir
set undofile
endif
...
Why do we need to install gulp globally and locally?
...t; 5.2
When used in a script field of your package.json, npm searches node_modules for the tool as well as globally installed modules, so the local install is sufficient.
So, if you are happy with (in your package.json):
"devDependencies": {
"gulp": "3.5.2"
}
"scripts": {
"test": "gulp te...
Set Matplotlib colorbar size to match graph
...lso works without using subplots:
import matplotlib.pyplot as plt
from mpl_toolkits.axes_grid1 import make_axes_locatable
import numpy as np
plt.figure()
ax = plt.gca()
im = ax.imshow(np.arange(100).reshape((10,10)))
# create an axes on the right side of ax. The width of cax will be 5%
# of ax an...
H2 in-memory database. Table not found
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DB_CLOSE_DELAY=-1
hbm2ddl closes the connection after creating the table, so h2 discards it.
If you have your connection-url configured like this
jdbc:h2:mem:test
the content of the database is lost at the moment the last conn...
Does Ruby have a string.startswith(“abc”) built in method?
Does Ruby have a some_string.starts_with("abc") method that's built in?
4 Answers
4
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Eclipse HotKey: how to switch between tabs?
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On an non-extended OSX keyboard: fn+ctrl+up_arrow / down_arrow by default.
– Ben Flynn
Dec 17 '11 at 20:56
1
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Why is the asterisk before the variable name, rather than after the type?
...ited Nov 30 '17 at 18:28
machine_1
3,79022 gold badges1616 silver badges3636 bronze badges
answered Dec 29 '08 at 19:28
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