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How to check if an object is a list or tuple (but not string)?
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In python 2 only (not python 3):
assert not isinstance(lst, basestring)
Is actually what you want, otherwise you'll miss out on a lot of things which act like lists, but aren't subclasses of list or tuple.
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Java ArrayList copy
... create a new ArrayList based on the other ArrayList you do this:
List<String> l1 = new ArrayList<String>();
l1.add("Hello");
l1.add("World");
List<String> l2 = new ArrayList<String>(l1); //A new arrayList.
l2.add("Everybody");
The result will be l1 will still have 2 eleme...
How to pretty print XML from Java?
I have a Java String that contains XML, with no line feeds or indentations. I would like to turn it into a String with nicely formatted XML. How do I do this?
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How do I concatenate strings in Swift?
How to concatenate string in Swift?
18 Answers
18
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How to try convert a string to a Guid [duplicate]
...thod for the Guid. I’m wondering how others handle converting a guid in string format into a guid type.
6 Answers
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Double vs single quotes
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" " allows you to do string interpolation, e.g.:
world_type = 'Mars'
"Hello #{world_type}"
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Xml serialization - Hide null values
...bleInt.HasValue;
}
Here is a full sample
public class Person
{
public string Name {get;set;}
public int? Age {get;set;}
public bool ShouldSerializeAge()
{
return Age.HasValue;
}
}
Serialized with the following code
Person thePerson = new Person(){Name="Chris"};
XmlSerializer xs =...
String was not recognized as a valid DateTime “ format dd/MM/yyyy”
I am trying to convert my string formatted value to date type with format dd/MM/yyyy .
13 Answers
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How to check if a line is blank using regex
...like this in multiline mode:
^\s*$
Explanation:
^ is the beginning of string anchor.
$ is the end of string anchor.
\s is the whitespace character class.
* is zero-or-more repetition of.
In multiline mode, ^ and $ also match the beginning and end of the line.
References:
regular-expression...
Why does ++[[]][+[]]+[+[]] return the string “10”?
This is valid and returns the string "10" in JavaScript ( more examples here ):
9 Answers
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