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Regex for numbers only
I haven't used regular expressions at all, so I'm having difficulty troubleshooting. I want the regex to match only when the contained string is all numbers; but with the two examples below it is matching a string that contains all numbers plus an equals sign like "1234=4321". I'm sure there's a way...
What does default(object); do in C#?
..., and things like the Try... pattern:
bool TryGetValue(out T value) {
if(NoDataIsAvailable) {
value = default(T); // because I have to set it to *something*
return false;
}
value = GetData();
return true;
}
As it happens, I also use it in some code-generation, wher...
How can I make a WPF combo box have the width of its widest element in XAML?
...d until they are actually made visible.
An easy way to test this is to modify the default ControlTemplate to bind the MinWidth of the outermost container (it's a Grid for both Aero and Luna) to the ActualWidth of PART_Popup. You'll be able to have the ComboBox automatically synchronize it's width ...
What is the C# version of VB.net's InputDialog?
...
What if I want to get password from user?
– Himanshu Jansari
Apr 6 '13 at 7:05
3
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Version vs build in Xcode
...he target summary I have the iOS application target form with fields: identifier, version, build, devices, and deployment target. The version field is blank and the build field is 3.4.0 (which matches the version of the app from when I was still editing with Xcode 3).
...
Parsing IPv6 extension headers containing unknown extensions
...
If you run into something you cannot parse, you have to make your decision or perform your action based on what you've parsed already.
The design is that way because in IPv6, each extension header "wraps" the rest of the pac...
What is the use of ByteBuffer in Java? [closed]
...omings. You essentially use it whenever you need to do fast low-level I/O. If you were going to implement a TCP/IP protocol or if you were writing a database (DBMS) this class would come in handy.
share
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How to extract the substring between two markers?
...port re
text = 'gfgfdAAA1234ZZZuijjk'
m = re.search('AAA(.+?)ZZZ', text)
if m:
found = m.group(1)
# found: 1234
or:
import re
text = 'gfgfdAAA1234ZZZuijjk'
try:
found = re.search('AAA(.+?)ZZZ', text).group(1)
except AttributeError:
# AAA, ZZZ not found in the original string
...
At runtime, find all classes in a Java application that extend a base class
... aClass : classes) {
System.out.println(aClass.getName());
if(aClass == ArrayList.class) {
List list = aClass.newInstance();
list.add("test");
System.out.println(list.getClass().getName() + ": " + list.size());
}
}
}
...
Sourcetree - undo unpushed commits
...ert: This command creates a new commit which will undo other commits. E.g. if you have a commit which adds a new file, git revert could be used to make a commit which will delete the new file.
About applying a soft reset: Assume you have the commits A to E (A---B---C---D---E) and you like to delete...