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Load multiple packages at once
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Several permutations of your proposed functions do work -- but only if you specify the character.only argument to be TRUE. Quick example:
lapply(x, require, character.only = TRUE)
share
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how to generate migration to make references polymorphic
...oProducts < 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
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A std::map that keep track of the order of insertion?
...nt> that stores an integer value to an unique string identifier, and I do look up with the string. It does mostly what I want, except for that it does not keep track of the insertion order. So when I iterate the the map to print out the values, they are sorted according to the string; but I want...
How to drop into REPL (Read, Eval, Print, Loop) from Python code
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You can do it even simpler than that: import code; code.interact(local=locals())
– Steven Kryskalla
Sep 9 '09 at 4:17
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Where do I find the current C or C++ standard documents?
...y questions the answer seems to be found in "the standard". However, where do we find that? Preferably online.
12 Answers
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Build the full path filename in Python
I need to pass a file path name to a module. How do I build the file path from a directory name, base filename, and a file format string?
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Remove unwanted parts from strings in a column
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@eumiro how do you apply this result if iterating each column?
– medev21
Sep 1 '16 at 19:50
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Reading my own Jar's Manifest
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You can do one of two things:
Call getResources() and iterate through the returned collection of URLs, reading them as manifests until you find yours:
Enumeration<URL> resources = getClass().getClassLoader()
.getResources(...
How do I import global modules in Node? I get “Error: Cannot find module ”?
...stalled globally. (Caveat: The OS must support symlinks.)
However, this doesn't come without its problems.
npm link is a development tool. It's awesome for managing packages on your local development box. But deploying with npm link is basically asking for problems, since it makes it super ea...
Self-references in object literals / initializers
... answer. More info on 'get' can be found here: developer.mozilla.org/en-US/docs/JavaScript/Reference/Operators/…
– jake
Feb 2 '13 at 16:21
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