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How to set up a PostgreSQL database in Django
...SER postgres WITH PASSWORD 'YourPassWordHere';
- \q
On your settings.py file you do:
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.postgresql_psycopg2',
'NAME': 'dbname',
'USER': 'postgres',
'PASSWORD': 'postgres',
'HOST': '',
'PORT'...
Styling twitter bootstrap buttons
...ap are controlled in CSS by ".btn{}". What you have to do is go to the CSS file and find where it says "btn" and change the color settings. However, it's not as simple as just doing that since you also have to change what color the button changes into when you highlight it, etc. To do THAT, you have...
What does Bump Version stand for?
...a newer version, or is it about only changing a version number in a config file for example? In other words, are there any technical details about how this term can be used?
– Alexey
May 13 '14 at 9:01
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Exec : display stdout “live”
...c = require('child_process').exec;
var coffeeProcess = exec('coffee -cw my_file.coffee');
coffeeProcess.stdout.on('data', function(data) {
console.log(data);
});
OR pipe the child process's stdout to the main stdout.
coffeeProcess.stdout.pipe(process.stdout);
OR inherit stdio using spawn...
Cannot push to Heroku because key fingerprint
...d -D
Or delete a specific key with
ssh-add -d ~/.ssh/id_rsa_example_key_file_use_your_own
Don't worry! You aren't actually deleting the keys, only changing which ones ssh-agent automatically tries to use, for example, when you try to push to heroku. It's easy to add and delete keys as needed,...
Batch script: how to check for admin rights
...ly (ERRORLEVEL = 0) - but they don't actually have admin rights. Using openfiles (see answer by Lucretius below) doesn't have this problem.
– EM0
Jan 14 '15 at 17:32
1
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Undefined reference to `sin` [duplicate]
...
You have compiled your code with references to the correct math.h header file, but when you attempted to link it, you forgot the option to include the math library. As a result, you can compile your .o object files, but not build your executable.
As Paul has already mentioned add "-lm" to link w...
Byte array to image conversion
...is one-liner works fine with a byte array that contains an image of a JPEG file.
Image x = (Bitmap)((new ImageConverter()).ConvertFrom(jpegByteArray));
EDIT:
See here for an updated version of this answer: How to convert image in byte array
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A route named “x” is already in the route collection. Route names must be unique. Exception with ASP
...this problem I had to go into the bin folder on my project, delete all DLL files and then rebuild and this fixed the problem.
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Rails migration for change column
... needed to change the type of a column:
Step 1:
Generate a new migration file using this code:
rails g migration sample_name_change_column_type
Step 2:
Go to /db/migrate folder and edit the migration file you made. There are two different solutions.
def change
change_column(:table_name,...