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How do I expand the output display to see more columns of a pandas DataFrame?
...ted encoding of the console.
Specifies the encoding to be used for strings returned by to_string,
these are generally strings meant to be displayed on the console.
display.expand_frame_repr: [default: True] [currently: True]
: boolean
Whether to print out the full DataFrame r...
What is the difference between null and undefined in JavaScript?
...alert() this value, you won't see anything. However, if you append a blank string to it then suddenly it'll appear:
var s;
WScript.Echo(s);
WScript.Echo("" + s);
You can declare a variable, set it to null, and the behavior is identical except that you'll see "null" printed out versus "undefined"....
Is there a PHP function that can escape regex patterns before they are applied?
...
preg_quote() is what you are looking for:
Description
string preg_quote ( string $str [, string $delimiter = NULL ] )
preg_quote() takes str and puts a
backslash in front of every character
that is part of the regular expression
syntax. This is useful if you have a
...
Detect all Firefox versions in JS
...
I believe the indexOf string method is way faster than a regular expression.
– Tomáš Zato - Reinstate Monica
Apr 22 '14 at 15:11
...
How do I deep copy a DateTime object?
...now. I'd like to create two separate datetimes, one which is parsed from a string and one with three years added to it. Currently I've hacked it up like this:
...
Escaping keyword-like column names in Postgres
...ml#delimited%20identifier
This is the code to quote the identifier:
static String delimited_identifier (String identifier)
{
return "\"" + identifier.replaceAll ("\"", "\"\"") + "\"";
}
And this is the code to build the insert:
static String build_insert (String table, String[] columns)
{
Strin...
overlay two images in android to set an imageview
...= DEFAULT_IMAGE_SIZE * 2, MAX_HEIGHT = DEFAULT_IMAGE_SIZE * 2;
private String picassoRequestTag = null;
public MergeImageView(Context context) {
super(context);
}
public MergeImageView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public M...
How would you implement an LRU cache in Java?
...gt; eldest) {
return super.size() > maxEntries;
}
}
Map<String, String> example = Collections.synchronizedMap(new LruCache<String, String>(CACHE_SIZE));
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'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine
...ying to get data from an Excel file on a button click event. My connection string is:
34 Answers
...
Remove element of a regular array
...econd element in C# zero-based array indexing).
A more complete example:
string[] myArray = { "a", "b", "c", "d", "e" };
int indexToRemove = 1;
myArray = myArray.Where((source, index) => index != indexToRemove).ToArray();
After running that snippet, the value of myArray will be { "a", "c", "d...