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Creating a expressjs middleware that accepts parameters
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Alternatively if you do not have too many cases or if role is NOT a string:
function HasRole(role) {
return function (req, res, next) {
if (role !== req.user.role) res.redirect(/* ... */);
else next();
}
}
var middlware_hasRoleAdmin = HasRole('admin'); // define router only once...
Remove insignificant trailing zeros from a number?
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If you convert it to a string it will not display any trailing zeros, which aren't stored in the variable in the first place since it was created as a Number, not a String.
var n = 1.245000
var noZeroes = n.toString() // "1.245"
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How do you create optional arguments in php?
... a null check. Literals include arrays (array() or []), booleans, numbers, strings, and null.
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What is the best (idiomatic) way to check the type of a Python variable? [duplicate]
I need to know if a variable in Python is a string or a dict. Is there anything wrong with the following code?
10 Answers
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Is Java “pass-by-reference” or “pass-by-value”?
... easily confuse many beginners.
It goes like this:
public static void main(String[] args) {
Dog aDog = new Dog("Max");
Dog oldDog = aDog;
// we pass the object to foo
foo(aDog);
// aDog variable is still pointing to the "Max" dog when foo(...) returns
aDog.getName().equals("...
What is the use of Enumerable.Zip extension method in Linq?
...ts of two sequences using a specified selector function.
var letters= new string[] { "A", "B", "C", "D", "E" };
var numbers= new int[] { 1, 2, 3 };
var q = letters.Zip(numbers, (l, n) => l + n.ToString());
foreach (var s in q)
Console.WriteLine(s);
Ouput
A1
B2
C3
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Parsing Visual Studio Solution files
...lt;SolutionProject> Projects { get; private set; }
public Solution(string solutionFileName)
{
if (s_SolutionParser == null)
{
throw new InvalidOperationException("Can not find type 'Microsoft.Build.Construction.SolutionParser' are you missing a assembly refere...
How to Turn Off Showing Whitespace Characters in Visual Studio IDE
...onment. There are also cases where it's actually critical, such as inside strings that are getting parsed.
– Thought
Jul 6 '14 at 23:30
3
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How do I escape the wildcard/asterisk character in bash?
...e variables to prevent strange behaviour" -- when you want to use them as strings
– Angelo
Oct 21 '15 at 15:24
See al...
Setting the MySQL root user password on OS X
...pdate: As of MySQL 5.7, the password field has been renamed authentication_string. When changing the password, use the following query to change the password. All other commands remain the same:
mysql> UPDATE user SET authentication_string=PASSWORD("NEWPASSWORD") WHERE User='root';
Update: O...