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How to empty a Heroku database
...e, if you are using SHARED_DATABASE_URL:
$ heroku pg:reset DATABASE_URL
Now to recreate the database with nothing in it:
$ heroku run rake db:migrate
To populate the database with your seed data:
$ heroku run rake db:seed
---OR---
You can combine the last two (migrate & seed) into on...
Convert a python UTC datetime to a local datetime using only python standard library?
I have a python datetime instance that was created using datetime.utcnow() and persisted in database.
12 Answers
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JavaScript by reference vs. by value [duplicate]
...false
Example 2:
var a = ["1", "2", {foo:"bar"}];
var b = a[1]; // b is now "2";
var c = a[2]; // c now references {foo:"bar"}
a[1] = "4"; // a is now ["1", "4", {foo:"bar"}]; b still has the value
// it had at the time of assignment
a[2] = "5"; // a is now ["1", "4", "5"]; c st...
Django development IDE [closed]
...ans starting to get Python support, but I have no idea where that is right now. Lots of people rave about NetBeans 6, but in the Java world Eclipse still reigns as the king of the OSS IDEs.
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Remove large .pack file created by git
... a load of files in to a branch and merged and then had to remove them and now I'm left with a large .pack file that I don't know how to get rid of.
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How to scale down a range of numbers with a known min and max value
...n
which is what we want. So we need to do a translation and a scaling. Now if instead we want to get arbitrary values of a and b, we need something a little more complicated:
(b-a)(x - min)
f(x) = -------------- + a
max - min
You can verify that putting in min for x now give...
Disabling Chrome Autofill
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This is the only working fix now. False, and off, do not work anymore. Should be the correct answer now.
– David
Aug 7 '15 at 2:02
5
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Generate .pem file used to set up Apple Push Notifications
...wnload" button to download the certificate (.cer file) you've created just now. - Double click the downloaded file to install the certificate into Keychain Access on your Mac.
Step 7: On your Mac, go to "Keychain", look for the certificate you have just installed. If unsure which certificate is the...
How to compare versions in Ruby?
... what it's worth: vers = (1..3000000).map{|x| "0.0.#{x}"}; 'ok' puts Time.now; vers.map{|v| ComparableVersion.new(v) }.sort.first; puts Time.now # 24 seconds 2013-10-29 13:36:09 -0700 2013-10-29 13:36:33 -0700 => nil puts Time.now; vers.map{|v| Gem::Version.new(v) }.sort.first; puts Time.now ...
Guava equivalent for IOUtils.toString(InputStream)
...ByteSource, CharSource, ByteSink and CharSink. Given a ByteSource, you can now get its contents as a String like this:
ByteSource source = ...
String text = source.asCharSource(Charsets.UTF_8).read();
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