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When to wrap quotes around a shell variable?
... (or any whitespace really) or special characters (wildcards). Not quoting strings with spaces often leads to the shell breaking apart a single argument into many.
$? doesn't need quotes since it's a numeric value. Whether $URL needs it depends on what you allow in there and whether you still want ...
Java generics type erasure: when and what happens?
... into compile-time checks and execution-time casts. So this code:
List<String> list = new ArrayList<String>();
list.add("Hi");
String x = list.get(0);
is compiled into
List list = new ArrayList();
list.add("Hi");
String x = (String) list.get(0);
At execution time there's no way of ...
Is there a way to create multiline comments in Python?
...
You can use triple-quoted strings. When they're not a docstring (the first thing in a class/function/module), they are ignored.
'''
This is a multiline
comment.
'''
(Make sure to indent the leading ''' appropriately to avoid an IndentationError.)
...
What is the { get; set; } syntax in C#?
...r the following (similar code will be generated by the compiler):
private string name;
public string Name
{
get
{
return this.name;
}
set
{
this.name = value;
}
}
share
|
...
Difference between single quotes and double quotes in Javascript [duplicate]
...double quotes and single quotes is the interpretation of variable inside a string and the treatment of escape characters.
6...
Why is a combiner needed for reduce method that converts type in java 8
...entity,
BinaryOperator<T> accumulator)
In your case, T is String, so BinaryOperator<T> should accept two String arguments and return a String. But you pass to it an int and a String, which results in the compilation error you got - argument mismatch; int cannot be converted to...
PHP script to loop through all of the files in a directory?
...tries);
//OUTPUT
object(FilesystemIterator)[1]
array (size=14)
0 => string 'aa[1].jpg' (length=9)
1 => string 'Chrysanthemum.jpg' (length=17)
2 => string 'Desert.jpg' (length=10)
3 => string 'giphy_billclinton_sad.gif' (length=25)
4 => string 'giphy_shut_your.gif' (length=...
Setting the filter to an OpenFileDialog to allow the typical image formats?
...As ImageCodecInfo() = ImageCodecInfo.GetImageEncoders()
Dim sep As String = String.Empty
For Each c As ImageCodecInfo In codecs
Dim codecName As String = c.CodecName.Substring(8).Replace("Codec", "Files").Trim()
ofd.Filter = String.Format("{0}{1}{2} ({3})|{3}"...
Escaping regex string
...se the re.escape() function for this:
4.2.3 re Module Contents
escape(string)
Return string with all non-alphanumerics backslashed; this is useful if you want to match an arbitrary literal string that may have regular expression metacharacters in it.
A simplistic example, search any occu...
Python datetime to string without microsecond component
I'm adding UTC time strings to Bitbucket API responses that currently only contain Amsterdam (!) time strings. For consistency with the UTC time strings returned elsewhere, the desired format is 2011-11-03 11:07:04 (followed by +00:00 , but that's not germane).
...