I haven't come up with a clever way of making TextBox.Text work exactly the way it currently does, but at the end always put a + "\n" at the end of it. The best I have done is make many overloaded functions like:
prtMain(string s) { tbMain.Text += s + "\n"; }
prtMain(string s1, string s2) { tbMain.Text += s1 + " " + s2 + "\n";}
I'm guessing there is a clever way to add to the existing .text code but not sure how.
[Edit] in c# to answer a question.
Thanks.
I think I'm answering my own question. It looks like what I want is an Extension method. This is what I did:
static class Util
{
public static int MyText(this TextBox txtBox, string s)
{
txtBox.Text += s + "\n";
return 0;
}
}
So I can call this by using tbMyTextBox.MyText("Hello"); Next step, get to where I can say tbMyTextBox.MyText = Hello.
Related
I'm adding some HTML content to an UIWebView.
This line:
generatedHtml += "<br><p style=\"font-family:'Chevin-Medium';font-size:12px;color:#505050;padding-top:0px;\">" + newsItem.entry.likes + " like this " + newsItem.entry.comments?.count + " comments</p>"
I get:
expressions was too complex to be solved in reasonable time
I'm just doing a count on an array, i don't know how to make that less complex?
The object looks like this:
public class NewsItem: NSObject {
var entry: EntryObject = EntryObject()
}
public class EntryObject: NSObject {
var comments: [Comment]? = []
}
newsItem.entry.comments?.count is an integer, and you can't add an integer to a string using +, you should use string interpolation with \():
" like this \(newsItem.entry.comments?.count) comments</p>"
Or use the String initializer if you need to keep using +:
" like this " + String(newsItem.entry.comments?.count) + " comments</p>"
If the error "too complex" persists, you'll have to break down the statements and use variables instead of inserting the expressions directly.
Try to do by this way
var countComments : Int = 0
//Validate comment counting
if let cComments = newsItem.entry.comments?.count
{
countComments = cComments
}
//... Some code here ...
//Devide to Conquest.
//If is easy to find... Is not hard to fix
generatedHtml += "<br>"
generatedHtml += "<p style=\"font-family:'Chevin-Medium';font-size:12px;color:#505050;padding-top:0px;\">"
generatedHtml += "\(newsItem.entry.likes) "
generatedHtml += "like this \(countComments) comments" //Here you have a valid value
genetatedHtml += "</p>"
But, why?
Maybe you have a problem with the optional value newsItem.entry.comments?.count that can gets you a nil value. Then, first of all, validate the value and be sure about what was returned. Better "0", a valid value than nil
When you split the string creation, the debug working will be more easy to execute. You will can have a better idea where is happening an error.
Maybe it´s not a definitive solution to your problem, but a good way to help you fix it.
I'm using Z3 C++ API (Version 4.3.1) and I want to extract variables of a formula (An object of type expr). I've found a similar question but it is in Z3py. I am wonder if there is a method in Z3 C/C++ API to extract variables from expr object. Thanks!
For example (some details omitted):
expr fs = implies(x + y == 0, z * x < 15);
std::vector<expr> varlist = get_vars(fs);
Then varlist should contain x,y,z.
The C++ example in the distribution (examples/c++/example.cpp) shows a sample visitor pattern.
It is very simplistic, but will give the idea.
I repeat it here below:
void visit(expr const & e) {
if (e.is_app()) {
unsigned num = e.num_args();
for (unsigned i = 0; i < num; i++) {
visit(e.arg(i));
}
// do something
// Example: print the visited expression
func_decl f = e.decl();
std::cout << "application of " << f.name() << ": " << e << "\n";
}
else if (e.is_quantifier()) {
visit(e.body());
// do something
}
else {
assert(e.is_var());
// do something
}
}
The visitor function can be improved by using
a cache of previously visited expressions because in general Z3 uses shared sub-expressions.
This is similar to the Python example.
Hope this helps
I'm implementing a methond in my application that uses the Jessp parser class in order to open a file and getting the deftemplates and deffacts inside of it. The problem is that when trying to obtain the result into a object variable, it asks on the constructor for a JessTokenStream. I tried to pass a JessToken, but then it complains about the type, that it should be e8. Searched through the Jess documentation but didn't found an explanation for the arguments, only the syntax of the constructor.
Anyone can help?.
Thanks in advance!!!
The class JessTokenStream is not public, so you can't actually call those parseXXX() methods. They are public for historical reasons but aren't actually usable by clients. They should actually be removed from the public interface.
Instead, use the two-argument form of parseExpression(), and then test the returned object to determine its type. Then you can do what you want with the returned object:
Rete engine = ...
Jesp jesp = ...
Object o = jesp.parseExpression(engine.getGlobalContext(), false);
if (o instanceof Deffacts) {
Deffacts d = (Deffacts) o;
for (int i = 0; i<d.getNFacts(); ++i) {
Fact f = d.getFact(i);
Deftemplate t = f.getDeftemplate();
System.out.println("Fact name is " + f.getName();
System.out.println("Fact name is " + f.getName();
for (String name: t.getSlotNames())
System.out.println("Slot " + name + " contains " + f.getSlotValue(name));
}
}
This one has kept me stumped for a couple of days now.
It's my first dabble with CLR & UDF ...
I have created a user defined function that takes a multiline String as input, scans it and replaces a certain line in the string with an alternative if found. If it is not found, it simply appends the desired line at the end. (See code)
The problem, it seems, comes when the final String (or Stringbuilder) is converted to an SqlString or SqlChars. The converted, returned String always contains the Nul character as every second character (viewing via console output, they are displayed as spaces).
I'm probably missing something fundamental on UDF and/or CLR.
Please Help!!
Code (I leave in the commented Stringbuilder which was my initial attempt... changed to normal String in a desperate attempt to find the issue):
[Microsoft.SqlServer.Server.SqlFunction]
[return: SqlFacet(MaxSize = -1, IsFixedLength = false)]
//public static SqlString udf_OmaChangeJob(String omaIn, SqlInt32 jobNumber) {
public static SqlChars udf_OmaChangeJob(String omaIn, SqlInt32 jobNumber) {
if (omaIn == null || omaIn.ToString().Length <= 0) return new SqlChars("");
String[] lines = Regex.Split(omaIn.ToString(), "\r\n");
Regex JobTag = new Regex(#"^JOB=.+$");
//StringBuilder buffer = new StringBuilder();
String buffer = String.Empty;
bool matched = false;
foreach (var line in lines) {
if (!JobTag.IsMatch(line))
//buffer.AppendLine(line);
buffer += line + "\r\n";
else {
//buffer.AppendLine("JOB=" + jobNumber);
buffer += ("JOB=" + jobNumber + "\r\n");
matched = true;
}
}
if (!matched) //buffer.AppendLine("JOB=" + jobNumber);
buffer += ("JOB=" + jobNumber) + "\r\n";
//return new SqlString(buffer.ToString().Replace("\0",String.Empty)) + "blablabla";
// buffer = buffer.Replace("\0", "|");
return new SqlChars(buffer + "\r\nTheEnd");
}
I know in my experiences, the omaIn parameter should be of type SqlString and when you go to collect its value/process it, set a local variable:
string omaString = omaIn != SqlString.Null ? omaIn.Value : string.empty;
Then when you return on any code path, to rewrap the string in C#, you'd need to set
return omaString == string.empty ? new SqlString.Null : new SqlString(omaString);
I have had some fun wrestling matches learning the intricate hand-off between local and outbound types, especially with CLR TVFs.
Hope that can help!
I browsed around for a solution and I am sure it's a simple question but still not sure how to do that. So, I have a string that contains many words and some times it has links in it. For example:
I like the website http://somesitehere.com/somepage.html and I suggest you try it too.
I want to display the string in my view and have all links automatically converted to URLs.
#Model.MyText
Even StackOverflow gets it.
#Hunter is right.
In addition i found complete implementation in C#: http://weblogs.asp.net/farazshahkhan/archive/2008/08/09/regex-to-find-url-within-text-and-make-them-as-link.aspx.
In case original link goes down
VB.Net implementation
Protected Function MakeLink(ByVal txt As String) As String
Dim regx As New Regex("http://([\w+?\.\w+])+([a-zA-Z0-9\~\!\#\#\$\%\^\&\*\(\)_\-\=\+\\\/\?\.\:\;\'\,]*)?", RegexOptions.IgnoreCase)
Dim mactches As MatchCollection = regx.Matches(txt)
For Each match As Match In mactches
txt = txt.Replace(match.Value, "<a href='" & match.Value & "'>" & match.Value & "</a>")
Next
Return txt
End Function
C#.Net implementation
protected string MakeLink(string txt)
{
Regex regx = new Regex("http://([\\w+?\\.\\w+])+([a-zA-Z0-9\\~\\!\\#\\#\\$\\%\\^\\&\\*\\(\\)_\\-\\=\\+\\\\\\/\\?\\.\\:\\;\\'\\,]*)?", RegexOptions.IgnoreCase);
MatchCollection mactches = regx.Matches(txt);
foreach (Match match in mactches) {
txt = txt.Replace(match.Value, "<a href='" + match.Value + "'>" + match.Value + "</a>");
}
return txt;
}
One way to do that would be to do a Regular Expression match on a chunk of text and replace that url string with an anchor tag.
Another regex that can be used with KvanTTT answer, and has the added benefit of accepting https urls
https?://([\w+?.\w+])+([a-zA-Z0-9\~!\##\$\%\^\&*()_-\=+\/\?.:\;\'\,]*)?
.net string representation:
"https?://([\\w+?\\.\\w+])+([a-zA-Z0-9\\~\\!\\#\\#\\$\\%\\^\\&\\*\\(\\)_\\-\\=\\+\\\\\\/\\?\\.\\:\\;\\'\\,]*)?"