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How can I determine if a String is non-null and not only whitespace in Groovy?
Groovy adds the isAllWhitespace() method to Strings, which is great, but there doesn't seem to be a good way of determining if a String has something other than just white space in it.
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How to sort the result from string_agg()
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With postgres 9.0+ you can write:
select string_agg(product,' | ' order by product) from "tblproducts"
Details here.
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How to show method parameter tooltip in C#?
...ame">This is user's surname. </param>
private void DoWork(int id, string name, string surname)
{
// do stuff
}
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Custom numeric format string to always display the sign
Is there any way I can specify a standard or custom numeric format string to always output the sign, be it +ve or -ve (although what it should do for zero, I'm not sure!)
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Regex: Specify “space or start of string” and “space or end of string”
...ds.
(?<=\s|^) #to look behind the match
(stackoverflow) #the string you want. () optional
(?=\s|$) #to look ahead.
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follo...
Flask-SQLalchemy update a row's information
...:
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(80), unique=True)
data = db.Column(db.PickleType())
def __init__(self, name, data):
self.name = name
self.data = data
def __repr__(self):
return '<User %r>' % self.username
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Can someone explain the traverse function in Haskell?
...user IDs to usernames looks like:
mapUserIDsToUsernames :: (Num -> IO String) -> [Num] -> IO [String]
mapUserIDsToUsernames fn ids = traverse fn ids
There's also a function called mapM:
mapM :: (Traversable t, Monad m) => (a -> m b) -> t a -> m (t b)
Any use of mapM can...
How to open a new tab using Selenium WebDriver?
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The code below will open the link in new Tab.
String selectLinkOpeninNewTab = Keys.chord(Keys.CONTROL,Keys.RETURN);
driver.findElement(By.linkText("urlLink")).sendKeys(selectLinkOpeninNewTab);
The code below will open empty new Tab.
String selectLinkOpeninNewTab = Ke...
Create table with jQuery - append
...are several approaches:
/* Note that the whole content variable is just a string */
var content = "<table>"
for(i=0; i<3; i++){
content += '<tr><td>' + 'result ' + i + '</td></tr>';
}
content += "</table>"
$('#here_table').append(content);
But, with th...
Email address validation using ASP.NET MVC data type attributes
... required")]
[EmailAddress(ErrorMessage = "Invalid Email Address")]
public string Email { get; set; }
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