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Max length UITextField
...unc checkMaxLength(textField: UITextField!, maxLength: Int) {
// swift 1.0
//if (count(textField.text!) > maxLength) {
// textField.deleteBackward()
//}
// swift 2.0
if (textField.text!.characters.count > maxLength) {
textField.deleteBackward()
}
}
...
How can I determine whether a 2D Point is within a Polygon?
...e coordinate system scale you use for drawing. If your pixel step width is 1.0, then just choose 1.0 (yet 0.1 would have worked as well)
Now that we have the ray with its start and end coordinates, the problem shifts from "is the point within the polygon" to "how often does the ray intersects a pol...
Difference between `constexpr` and `const`
...m; }
private:
double re;
double im;
};
constexpr complex COMP(0.0, 1.0); // creates a literal complex
double x = 1.0;
constexpr complex cx1(x, 0); // error: x is not a constant expression
const complex cx2(x, 1); // OK: runtime initialization
constexpr d...
How to convert String to Long in Kotlin?
...Note: Answers mentioning jet.String are outdated. Here is current Kotlin (1.0):
Any String in Kotlin already has an extension function you can call toLong(). Nothing special is needed, just use it.
All extension functions for String are documented. You can find others for standard lib in the ap...
Entity Framework Timeouts
...e the conflicting value from the connection string.
Entity Framework Core 1.0:
this.context.Database.SetCommandTimeout(180);
Entity Framework 6:
this.context.Database.CommandTimeout = 180;
Entity Framework 5:
((IObjectContextAdapter)this.context).ObjectContext.CommandTimeout = 180;
Entity ...
Reading settings from app.config or web.config in .NET
...
For a sample app.config file like below:
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<appSettings>
<add key="countoffiles" value="7" />
<add key="logfilelocation" value="abc.txt" />
</appSettings>
</configuration>
Yo...
AppSettings get value from .config file
... Configuration.
Here is an example of my App.config:
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
</startup>
<appSettings>
<add key="AdminName" ...
Positioning element at center of screen
... <meta name="viewport" content="width=device-width, initial-scale=1.0">
<style>
body > div {
position: absolute;
top: 0;
bottom: 0;
left: 0;
right: 0;
display: fle...
How to add a “readonly” attribute to an ?
...only" value="bar" /> validates perfectly at validator.w3.org with xhtml 1.0 strict.
– Jonas Stensved
Aug 9 '11 at 13:16
17
...
How to change background color in android app
...ode in the layout.xml or /res/layout/activity_main.xml:
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="10dp"
a...