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Why unsigned integer is not available in PostgreSQL?
...hy postgresql lacks unsigned types. However I would suggest to use domains for unsigned types.
http://www.postgresql.org/docs/9.4/static/sql-createdomain.html
CREATE DOMAIN name [ AS ] data_type
[ COLLATE collation ]
[ DEFAULT expression ]
[ constraint [ ... ] ]
where constraint is:
[...
Align image in center and middle within div
...s.com/cssref/pr_class_display.asp. Why do we need to use block? I worked for me, but not sure why block will center the img and inline will not.
– user3731622
Jan 11 '16 at 20:07
...
UITableView - change section header color
...tarted:
Objective-C:
- (UIView *) tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{
UIView *headerView = [[[UIView alloc] initWithFrame:CGRectMake(0, 0, tableView.bounds.size.width, 30)] autorelease];
if (section == integerRepresentingYourSectionOfInterest)
[...
Writing Unicode text to a text file?
...ode object, you'll need to convert it to a unicode-encoded string object before writing it to a file:
foo = u'Δ, Й, ק, م, ๗, あ, 叶, 葉, and 말.'
f = open('test', 'w')
f.write(foo.encode('utf8'))
f.close()
When you read that file again, you'll get a unicode-encoded string that you c...
Tracking Google Analytics Page Views with AngularJS
...
If you're using ng-view in your Angular app you can listen for the $viewContentLoaded event and push a tracking event to Google Analytics.
Assuming you've set up your tracking code in your main index.html file with a name of var _gaq and MyCtrl is what you've defined in the ng-contr...
Are there any reasons to use private properties in C#?
...
a nice common pattern for this is return _password ?? (_password = CallExpensiveOperation());
– Marc
Jul 22 '10 at 23:20
...
What is setup.py?
...ll has been packaged and distributed with Distutils, which is the standard for distributing Python Modules.
This allows you to easily install Python packages. Often it's enough to write:
$ pip install .
pip will use setup.py to install your module. Avoid calling setup.py directly.
https://docs...
Encoding an image file with base64
... get the string 'ÿØÿà'. However, when I run this alone as a substitute for data I get an error. The encoded string is much longer for comparison. So I think that likely stores the image data. does the decoded string simply reference the encoded string or something? It seems far too short for dat...
How to convert Java String into byte[]?
...sked is:
byte[] b = string.getBytes();
byte[] b = string.getBytes(Charset.forName("UTF-8"));
byte[] b = string.getBytes(StandardCharsets.UTF_8); // Java 7+ only
However the problem you appear to be wrestling with is that this doesn't display very well. Calling toString() will just give you the ...
What is this 'Lambda' everyone keeps speaking of?
... In JavaScript:
function () {}; // very simple
Let's see now some uses for these lambdas.
Abstracting boilerplate code
Lambdas may be used to abstract away boilerplate code. For example loops. We're used to write for and while loops all day long. But this is code that does not be written. We c...