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QString to char* conversion
...is method is very dangerous and should not be used: toStdString() return a new std::string object and then the pointer to internal data const char * is obtained. However, the string object is immediately destroyed after this statement, so the result pointer probably does not have a valid address if ...
The difference between Classes, Objects, and Instances
...e class House to create objects (instances of class House)
House myHouse = new House();
House sistersHouse = new House();
The class House describes the concept of what a house is, and there are specific, concrete houses which are objects and instances of class House.
Note: This is exactly the sam...
How can I strip HTML tags from a string in ASP.NET?
...libraries out there.
Here is a sample:
string htmlContents = new System.IO.StreamReader(resultsStream,Encoding.UTF8,true).ReadToEnd();
HtmlAgilityPack.HtmlDocument doc = new HtmlAgilityPack.HtmlDocument();
doc.LoadHtml(htmlContents);
if (doc == null...
How to run a JAR file
...st-version: 1.0
Main-Class: Test
Note that the text file must end with a new line or carriage return.
The last line will not be parsed properly if it does not end with a
new line or carriage return.
Then run:
javac Test.java
jar cfm test.jar manifest.mf Test.class
java -jar test.jar
Output:
H...
How do I convert Word files to PDF programmatically? [closed]
... path1 +j.ToString()+ "_image.doc";
try
{
using (var ms = new MemoryStream((byte[])(bits)))
{
var image = System.Drawing.Image.FromStream(ms);
var pngTarget = Path.ChangeExtension(target, "png");
image.Save(pngTarget, System.Drawing.Imagin...
How to dynamic new Anonymous Class?
...the same casting technique to iterate over the fields:
dynamic employee = new ExpandoObject();
employee.Name = "John Smith";
employee.Age = 33;
foreach (var property in (IDictionary<string, object>)employee)
{
Console.WriteLine(property.Key + ": " + property.Value);
}
// This code exampl...
What Automatic Resource Management alternatives exist for Scala?
...sources by using Using :), Example:
val lines: Try[Seq[String]] =
Using(new BufferedReader(new FileReader("file.txt"))) { reader =>
Iterator.unfold(())(_ => Option(reader.readLine()).map(_ -> ())).toList
}
or using Using.resource avoid Try
val lines: Seq[String] =
Using.resour...
How do you log server errors on django sites
... like more fine-grained control, you can write and add to your settings a middleware class which defines a method named process_exception(), which will have access to the exception that was raised:
http://docs.djangoproject.com/en/dev/topics/http/middleware/#process-exception
Your process_exceptio...
R cannot be resolved - Android error
I just downloaded and installed the new Android SDK. I wanted to create a simple application to test drive it.
108 Answers
...
comparing sbt and Gradle [closed]
...ity.
The downsides are:
A hieroglyphic syntax that tends to discourage new users (especially if they come from Java)
No easy way to define a "task": if you need a special build procedure, you will need to either find a plugin, or write a plugin yourself.
...