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Ruby on Rails - Import Data from a CSV file
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The smarter_csv gem was specifically created for this use-case: to read data from CSV file and quickly create database entries.
require 'smarter_csv'
options = {}
SmarterCSV.process('input_file.csv', options) do |chunk|
chunk.each do |data_hash|
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Run git pull over all subdirectories [duplicate]
...t cd 'ing into each repo's root directory? I have the following which are all separate git repositories ( not submodules):
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Why can templates only be implemented in the header file?
...f;
When reading this line, the compiler will create a new class (let's call it FooInt), which is equivalent to the following:
struct FooInt
{
int bar;
void doSomething(int param) {/* do stuff using int */}
}
Consequently, the compiler needs to have access to the implementation of the m...
How to throw std::exceptions with variable messages?
...r option then failing. Also, convenience of format strings has been proven by many different languages. But you are right, it is largely a matter of taste.
– Maxim Egorushkin
Sep 4 '12 at 12:01
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Map over object preserving keys
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Creates an object with the same keys as object and values generated by
running each own enumerable property of object through the callback.
The callback is bound to thisArg and invoked with three arguments;
(value, key, object).
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Python - 'ascii' codec can't decode byte
I'm really confused. I tried to encode but the error said can't decode... .
7 Answers
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Converting camel case to underscore case in ruby
... think you even need to include self., or at least it works for me under Ruby 1.9.3.
– Gus Shortz
Jul 17 '13 at 15:39
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AWS: How to disable all services?
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Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
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How to check a radio button with jQuery?
...e:
$("#radio_1").attr('checked', 'checked');
Tip: You may also want to call click() or change() on the radio button afterwards. See comments for more info.
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Custom exception type
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This will not allow you stack traces unless you inherit from Error
– Luke H
Jul 30 '14 at 19:53
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