seed

Prevent Rails test from deleting seed data

由 时光怂恿深爱的人放手 提交于 2019-11-26 22:58:03
问题 I am using seeds.rb to populate some State model reference data: State.create :name => 'Alabama', :abbreviation => 'AL' State.create :name => 'Alaska', :abbreviation => 'AK' # ... Although I am not using state fixtures (since it's seed data to begin with, I think it wouldn't be DRY to have to duplicate this purely for tests), the Rails testing framework seems to delete all the State seed data during testing. (I am dropping, recreating, migrating and reseeding the test db, and confirmed the

Using itertools.product and want to seed a value

由 谁都会走 提交于 2019-11-26 22:25:01
问题 So I've wrote a small script to download pictures from a website. It goes through a 7 alpha charactor value, where the first char is always a number. The problem is if I want to stop the script and start it up again I have to start all over. Can I seed itertools.product somehow with the last value I got so I don't have to go through them all again. Thanks for any input. here is part of the code: numbers = '0123456789' alnum = numbers + 'abcdefghijklmnopqrstuvwxyz' len7 = itertools.product

What is the best way to seed a database in Rails?

由 自闭症网瘾萝莉.ら 提交于 2019-11-26 19:34:17
I have a rake task that populates some initial data in my rails app. For example, countries, states, mobile carriers, etc. The way I have it set up now, is I have a bunch of create statements in files in /db/fixtures and a rake task that processes them. For example, one model I have is themes. I have a theme.rb file in /db/fixtures that looks like this: Theme.delete_all Theme.create(:id => 1, :name=>'Lite', :background_color=>'0xC7FFD5', :title_text_color=>'0x222222', :component_theme_color=>'0x001277', :carrier_select_color=>'0x7683FF', :label_text_color=>'0x000000', :join_upper_gradient=>

杭电OJ 1014（C++）

由 試著忘記壹切 提交于 2019-11-26 17:12:15
本题较为简单，计算出MOD个结果后，将其排序，然后一一对照即可。 #include <iostream> #include <algorithm> #include <iomanip> using namespace std; int main() { int STEP, MOD; while (cin >> STEP >> MOD) { bool flag = true; int seed[100005]; seed[0] = 0; for (int i = 1; i < MOD; i++) { seed[i] = (seed[i - 1] + STEP) % MOD; } sort(seed, seed + MOD); //对seed[0]至seed[MOD-1]排序 for (int i = 0; i < MOD; i++) { if (seed[i] != i) flag = false; } if (flag) cout << setw(10) << STEP << setw(10) << MOD << " Good Choice" << endl << endl; else cout << setw(10) << STEP << setw(10) << MOD << " Bad Choice" << endl << endl; } return 0; } 继续加油。

How to load db:seed data into test database automatically?

由 六月ゝ 毕业季﹏ 提交于 2019-11-26 14:59:23
I'm attempting to use the new standard way of loading seed data in Rails 2.3.4+, the db:seed rake task. I'm loading constant data, which is required for my application to really function correctly. What's the best way to get the db:seed task to run before the tests, so the data is pre-populated? ryanb The db:seed rake task primarily just loads the db/seeds.rb script. Therefore just execute that file to load the data. load "#{Rails.root}/db/seeds.rb" # or Rails.application.load_seed Where to place that depends on what testing framework you are using and whether you want it to be loaded before

What is the best way to seed a database in Rails?

由 痞子三分冷 提交于 2019-11-26 08:58:28
问题 I have a rake task that populates some initial data in my rails app. For example, countries, states, mobile carriers, etc. The way I have it set up now, is I have a bunch of create statements in files in /db/fixtures and a rake task that processes them. For example, one model I have is themes. I have a theme.rb file in /db/fixtures that looks like this: Theme.delete_all Theme.create(:id => 1, :name=>\'Lite\', :background_color=>\'0xC7FFD5\', :title_text_color=>\'0x222222\', :component_theme

Java random numbers using a seed

由 故事扮演 提交于 2019-11-26 01:45:30
问题 This is my code to generate random numbers using a seed as an argument: double randomGenerator(long seed) { Random generator = new Random(seed); double num = generator.nextDouble() * (0.5); return num; } Every time I give a seed and try to generate 100 numbers, they all are the same. How can I fix this? 回答1: If you're giving the same seed, that's normal. That's an important feature allowing tests. Check this to understand pseudo random generation and seeds: Pseudorandom number generator A

Java random numbers using a seed

由 大兔子大兔子 提交于 2019-11-25 19:33:39
This is my code to generate random numbers using a seed as an argument: double randomGenerator(long seed) { Random generator = new Random(seed); double num = generator.nextDouble() * (0.5); return num; } Every time I give a seed and try to generate 100 numbers, they all are the same. How can I fix this? Denys Séguret If you're giving the same seed, that's normal. That's an important feature allowing tests. Check this to understand pseudo random generation and seeds: Pseudorandom number generator A pseudorandom number generator (PRNG), also known as a deterministic random bit generator DRBG, is
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