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What's the difference between eval, exec, and compile?
... and returns the value of the expression:
>>> a = 2
>>> my_calculation = '42 * a'
>>> result = eval(my_calculation)
>>> result
84
exec and eval both accept the program/expression to be run either as a str, unicode or bytes object containing source code, or as a...
How to safely upgrade an Amazon EC2 instance from t1.micro to large? [closed]
...
From my experience, the way I do it is create a snapshot of your current image, then once its done you'll see it as an option when launching new instances. Simply launch it as a large instance at that point.
This is my approach ...
Postgresql 9.2 pg_dump version mismatch
...alled version(s) of pg_dump:
find / -name pg_dump -type f 2>/dev/null
My output was:
/usr/pgsql-9.3/bin/pg_dump
/usr/bin/pg_dump
There are two versions installed. To update pg_dump with the newer version:
sudo ln -s /usr/pgsql-9.3/bin/pg_dump /usr/bin/pg_dump --force
This will create the ...
How do I integrate Ajax with Django applications?
...able': 'world'})
index.html:
<h1>Hello {{ variable }}, welcome to my awesome site</h1>
urls.py:
url(r'^hello/', 'myapp.views.hello'),
url(r'^home/', 'myapp.views.home'),
That's an example of the simplest of usages. Going to 127.0.0.1:8000/hello means a request to the hello() func...
Spring get current ApplicationContext
I am using Spring MVC for my web application. My beans are written in " spring-servlet.xml " file
11 Answers
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How to step back in Eclipse debugger?
...t to run them successfully is to extend the heap space in eclipse.ini.
In my case I've tried to use JIVE and Diver to debug an XML parsing program but always ended up freezing eclipse due to lack of resources. Diver could be tricky to run on linux 64bit, it works on ubuntu 32bit and possibly other ...
CSS checkbox input styling
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I create my own solution without label
input[type=checkbox] {
position: relative;
cursor: pointer;
}
input[type=checkbox]:before {
content: "";
display: block;
position: ...
What is the most robust way to force a UIView to redraw?
...hod viewDidLoad I fire off a URLRequest for data that is required by on of my subviews - a UIView subclass with drawRect overridden. When the data arrives from the cloud I start building my view hierarchy. the subclass in question gets passed the data and it's drawRect method now has everything it n...
node.js remove file
...r example we want to remove discovery.docx file from c:/book directory. So my file-path is c:/book/discovery.docx. So code for removing that file will be,
var fs = require('fs');
var filePath = 'c:/book/discovery.docx';
fs.unlinkSync(filePath);
...
How can I make space between two buttons in same div?
...on to this problems years ago, why I did not found you previously, you are my hero
– Hakan Fıstık
Jan 13 '17 at 14:29
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