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Oracle PL/SQL - How to create a simple array variable?
...xtend(); -- Extend it
array(i) := 'x';
end loop;
end;
The first index is 1 not 0.
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How do you track record relations in NoSQL?
I am trying to figure out the equivalent of foreign keys and indexes in NoSQL KVP or Document databases. Since there are no pivotal tables (to add keys marking a relation between two objects) I am really stumped as to how you would be able to retrieve data in a way that would be useful for normal we...
Unable to find the wrapper “https” - did you forget to enable it when you configured PHP?
The problem is in the question. I've done a thorough investigation for solutions in regards to this and I know there are topics to this and I've followed them too and nothing has worked. That being said I'll list out exactly everything I've done so far. I am running PHP 5.2.14 with Zend Debugging on...
What does ^M character mean in Vim?
... the case the defaults remap the "special character escape" key it to Ctrl+Q.
– R. Martinho Fernandes
May 1 '11 at 17:45
9
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What are the different usecases of PNG vs. GIF vs. JPEG vs. SVG?
...vely worse and worse.
There are also different colour depths (palettes): Indexed color and Direct color.
Indexed means that the image can only store a limited number of colours (usually 256), controlled by the author, in something called a Color Map
Direct means that you can store many thousand...
How to remove single character from a String
...
One possibility:
String result = str.substring(0, index) + str.substring(index+1);
Note that the result is a new String (as well as two intermediate String objects), because Strings in Java are immutable.
...
open() in Python does not create a file if it doesn't exist
...losed at the block's end, even if an exception is raised on the way. It's equivalent to try-finally, but much shorter.
with open("file.dat","a+") as f:
f.write(...)
...
a+ Opens a file for both appending and reading. The file pointer is
at the end of the file if the file exists. The ...
Create dynamic URLs in Flask with url_for()
...f the route','parameters (if required)')
It can be used as:
@app.route('/index')
@app.route('/')
def index():
return 'you are in the index page'
Now if you have a link the index page:you can use this:
<a href={{ url_for('index') }}>Index</a>
You can do a lot o stuff with it, f...
How to set up a PostgreSQL database in Django
...TABASES = {
'default': {
'ENGINE': 'django.db.backends.postgresql',
'NAME': 'db_name',
'USER': 'db_user',
'PASSWORD': 'db_user_password',
'HOST': '',
'PORT': 'db_port_number',
}
}
- Other installation instructions can ...
Unstaged changes left after git reset --hard
... @NLwino, git rm .gitattributes removes .gitattributes from the index. git add -A adds all (including the removal of .gitattributes) to the index, which should then only be the removal of .gitattributes, if that was really the problem. git reset --hard resets all uncommitted changes, whic...