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Can I run multiple versions of Google Chrome on the same machine? (Mac or Windows)
...ludes a script which does the job for you.
Quoted from: section 7 of Cross-browser testing: All major browsers on ONE machine:
Chrome: Stand-alone installers can be downloaded from File Hippo. It is also possible to run multiple Chrome versions
side-by-side.
Although Sandboxie can ...
What is the difference between \r and \n?
...e separator; Windows tends to use \r\n as a line separator and Macs (up to OS 9) used to use \r as the line separator. (Mac OS X is Unix-y, so uses \n instead; there may be some compatibility situations where \r is used instead though.)
For more information, see the Wikipedia newline article.
EDIT...
“Insufficient Storage Available” even there is lot of free space in device memory
... sure Superuser and Terminal Emulator apps are installed. (They come with most custom ROMs.)
Run Terminal Emulator
Type in su, hit return.
This will bring up a Superuser prompt. Grant access. (You will have to wait three seconds before you can click "Allow".)
Change current directory by typing in cd...
How to list active / open connections in Oracle?
... substr(b.username,1,10) username,
-- b.server,
substr(b.osuser,1,8) os_user,
substr(b.program,1,30) program
from v$session b, v$process a
where
b.paddr = a.addr
and type='USER'
order by spid;
shar...
Foreign keys in mongo?
...xample:
student
{
name: 'Kate Monster',
addresses : [
{ street: '123 Sesame St', city: 'Anytown', cc: 'USA' },
{ street: '123 Avenue Q', city: 'New York', cc: 'USA' }
]
}
Child referencing
Like the student/course example above.
Parent referencing
Suitable for one-to-squillions,...
Open new Terminal Tab from command line (Mac OS X)
Is it possible to open a new tab in Mac OS X's terminal from the command line in a currently opened tab?
13 Answers
...
When I catch an exception, how do I get the type, file, and line number?
...
import sys, os
try:
raise NotImplementedError("No error")
except Exception as e:
exc_type, exc_obj, exc_tb = sys.exc_info()
fname = os.path.split(exc_tb.tb_frame.f_code.co_filename)[1]
print(exc_type, fname, exc_tb.tb_li...
What's the difference between eval, exec, and compile?
...gt; g = dict()
>>> l = dict()
>>> exec('global a; a, b = 123, 42', g, l)
>>> g['a']
123
>>> l
{'b': 42}
(If you display the value of the entire g, it would be much longer, because exec and eval add the built-ins module as __builtins__ to the globals automaticall...
Can't find the 'libpq-fe.h header when trying to install pg gem
I am using the Ruby on Rails 3.1 pre version. I like to use PostgreSQL, but the problem is installing the pg gem. It gives me the following error:
...
Location Services not working in iOS 8
My app that worked fine on iOS 7 doesn't work with the iOS 8 SDK.
26 Answers
26
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