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Extract substring in Bash
...he form someletters_12345_moreleters.ext , I want to extract the 5 digits and put them into a variable.
22 Answers
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Matching a space in regex
... space).
If you're looking for one or more, it's " *" (that's two spaces and an asterisk) or " +" (one space and a plus).
If you're looking for common spacing, use "[ X]" or "[ X][ X]*" or "[ X]+" where X is the physical tab character (and each is preceded by a single space in all those examples)...
How to remove RVM (Ruby Version Manager) from my system
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There's a simple command built-in that will pull it:
rvm implode
This will remove the rvm/ directory and all the rubies built within it. In order to remove the final trace of rvm, you need to remove the rvm gem, too:
gem uninstall rvm
If yo...
Prompt Dialog in Windows Forms
...turn prompt.ShowDialog() == DialogResult.OK ? textBox.Text : "";
}
}
And calling it:
string promptValue = Prompt.ShowDialog("Test", "123");
Update:
Added default button (enter key) and initial focus based on comments and another question.
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How do I decode HTML entities in Swift?
I am pulling a JSON file from a site and one of the strings received is:
23 Answers
23...
Best way to parse command line arguments in C#? [closed]
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I would strongly suggest using NDesk.Options (Documentation) and/or Mono.Options (same API, different namespace). An example from the documentation:
bool show_help = false;
List<string> names = new List<string> ();
int repeat = 1;
var p = new OptionSet () {
{ "n|name...
How do I correctly clone a JavaScript object?
...ttributes from the object's prototype that should be left in the prototype and not copied to the new instance. If, for instance, you are adding a clone method to Object.prototype, as some answers depict, you will need to explicitly skip that attribute. But what if there are other additional methods ...
How to download image from url
...emp\image35.png");
}
These methods are almost same as DownloadString(..) and DownloadStringAsync(...). They store the file in Directory rather than in C# string and no need of Format extension in URi
If You don't know the Format(.png, .jpeg etc) of Image
public void SaveImage(string filename, Im...
Why can a class not be defined as protected?
...tected or package-private would be the same thing.
You can declare nested and inner classes as protected or private, though.
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Serializing class instance to JSON
I am trying to create a JSON string representation of a class instance and having difficulty. Let's say the class is built like this:
...