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How to show SQL queries run in the Rails console?
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morhook
48455 silver badges1515 bronze badges
answered May 29 '10 at 17:44
John TopleyJohn Topley
10...
WPF: How to display an image at its original size?
...ne" is enough.
It is also very important what DPI has the image set in metadata. It took me quite a while before figuring out that if the image's DPI is different from the monitor's DPI (usually 96), WPF will automatically resize the image, as it tries to be DPI-independent.
EDIT
The MSDN link ...
Java unchecked: unchecked generic array creation for varargs parameter
...now their component type at runtime, and check at runtime whether elements added match its component type, but this check is not possible for parameterized types.
Anyway, rather than failing, the compiler still creates the array. It does something similar to this:
List<List<String>> co...
A Java collection of value pairs? (tuples?)
...that is easy enough to write on your own. For example, off the top of my head:
public class Pair<L,R> {
private final L left;
private final R right;
public Pair(L left, R right) {
assert left != null;
assert right != null;
this.left = left;
this.right = right;
}
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When should you branch?
...anching. One of the most common uses is for separating projects that once had a common code base. This is very useful to experiment with your code, without affecting the main trunk.
In general, you would see two branch types:
Feature Branch: If a particular feature is disruptive enough that you d...
How does Activity.finish() work in Android?
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CommonsWareCommonsWare
873k161161 gold badges21342134 silver badges21612161 bronze badges
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Android TextView with Clickable Links: how to capture clicks?
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Community♦
111 silver badge
answered Nov 14 '13 at 22:22
Zane ClaesZane Claes
13k1010 gold badges6060...
Swift - How to convert String to Double
... recommended because it returns 0 if the value cannot be converted (i.e.: bad user input).
let lessPrecisePI = Float("3.14")
let morePrecisePI = Double("3.1415926536")
let invalidNumber = Float("alphabet") // nil, not a valid number
Unwrap the values to use them using if/let
if let cost = Doub...
Using helpers in model: how do I include helper dependencies?
...m writing a model that handles user input from a text area. Following the advice from http://blog.caboo.se/articles/2008/8/25/sanitize-your-users-html-input , I'm cleaning up the input in the model before saving to database, using the before_validate callback.
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Why would $_FILES be empty when uploading files to PHP?
... 7 computer. I'm using Apache 2.2.11 and PHP 5.2.11. When I attempt to upload any file from a form, it seems to upload, but in PHP, the $_FILES array is empty. There is no file in the c:\wamp\tmp folder. I have configured php.ini to allow file uploads and such. The tmp folder has read/write ...