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Simple state machine example in C#?
...
}
}
public class Program
{
static void Main(string[] args)
{
Process p = new Process();
Console.WriteLine("Current State = " + p.CurrentState);
Console.WriteLine("Command.Begin: Current State = " + p.MoveNext(Command.Begin));...
Evaluate empty or null JSTL c tags
How can I validate if a String is null or empty using the c tags of JSTL ?
8 Answers
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Want to find records with no associated records in Rails
...ager loading table(s) Currently, Active Record recognizes the table in the string, and knows to JOIN the comments table to the query, rather than loading comments in a separate query. However, doing this without writing a full-blown SQL parser is inherently flawed. Since we don't want to write an SQ...
How to disable an Android button?
...ontent"
android:layout_width="wrap_content"
android:text="@string/button_text"
android:clickable = "false" />
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how perform grep operation on all files in a directory
...ommand to recursively grep for a particular text within a dir
grep -rni "string" *
where,
r = recursive i.e, search subdirectories within the current directory
n = to print the line numbers to stdout
i = case insensitive search
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vs in Generics
...ut T> is covariant, you're allowed to do the following:
IEnumerable<string> strings = new List<string>();
IEnumerable<object> objects = strings;
The second line above would fail if this wasn't covariant, even though logically it should work, since string derives from object. ...
How to create an HTML button that acts like a link?
... type="submit">. The only difference is that the <button> element allows children.
You'd intuitively expect to be able to use <button href="https://google.com"> analogous with the <a> element, but unfortunately no, this attribute does not exist according to HTML specification.
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What's up with Java's “%n” in printf?
...
%n is portable across platforms
\n is not.
See the formatting string syntax in the reference documentation:
'n' line separator The result is the
platform-specific line separator
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What is the difference between `let` and `var` in swift?
...This is not immediately obvious from basic examples involving integers and strings.
– SaltyNuts
Apr 27 '15 at 15:56
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Android WebView, how to handle redirects in app instead of opening a browser
...ebViewClient() {
public boolean shouldOverrideUrlLoading(WebView view, String url){
// do your handling codes here, which url is the requested url
// probably you need to open that url rather than redirect:
view.loadUrl(url);
return false; // then it is not handle...