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PostgreSQL: How to pass parameters from command line?
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Just note that now the foo is busy and another PREPARE should have another name while current session isn't closed. If you play with PREPARE into psql it's hard to invent each time a new name and DEALLOCATE can help with it =)
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Templated check for the existence of a class member function?
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return 0;
}
I've just tested it with Linux and gcc 4.1/4.3. I don't know if it's portable to other platforms running different compilers.
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Making HTTP Requests using Chrome Developer tools
...ince the Fetch API is supported by Chrome (and most other browsers), it is now quite easy to make HTTP requests from the devtools console.
To GET a JSON file for instance:
fetch('https://jsonplaceholder.typicode.com/posts/1')
.then(res => res.json())
.then(console.log)
Or to PO...
Checking if a variable is not nil and not zero in ruby
...h is a much lighter and widely used dependency than the full rails. Anyway now @ndn's response is the right one.
– rewritten
Jun 7 '17 at 19:42
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How to format Joda-Time DateTime to only mm/dd/yyyy?
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DateTime date = DateTime.now().withTimeAtStartOfDay();
date.toString("HH:mm:ss")
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Gem::LoadError for mysql2 gem, but it's already in Gemfile
...e with a specific mysql version like below
gem 'mysql2', '~> 0.3.18'
Now stop the server and run bundle
bundle install
Now restart your server. It should work.
rails s
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No resource found - Theme.AppCompat.Light.DarkActionBar
I used ActionBar Style Generator, and now trying to use into my app, but getting :
17 Answers
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Use cases for the 'setdefault' dict method
...or them:
headers = parse_headers( msg ) # parse the message, get a dict
# now add all the optional headers
for headername, defaultvalue in optional_headers:
headers.setdefault( headername, defaultvalue )
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Why is String immutable in Java?
...curity.
Design
Strings are created in a special memory area in java heap known as "String Intern pool". While you creating new String (Not in the case of using String() constructor or any other String functions which internally use the String() constructor for creating a new String object; String()...
Maven Modules + Building a Single Specific Module
... For anyone hitting this page in 2011, this is the better answer. There's now better support for multi-modules within maven itself (Maven 2.1 and above), you don't need to use the reactor plugin.
– Spedge
May 20 '11 at 9:39
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