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Passing variables to the next middleware using next() in Express.js
....YOUR_VAR. You might want to consider req.YOUR_APP_NAME.YOUR_VAR or req.mw_params.YOUR_VAR.
It will help you avoid overwriting other attributes.
Update May 31, 2020
res.locals is what you're looking for, the object is scoped to the request.
An object that contains response local variables scoped...
How to fix the datetime2 out-of-range conversion error using DbContext and SetInitializer?
... /// DateTime with a value of null.
/// </summary>
/// <param name="date">Date to check</param>
/// <returns>Input date if valid in the DB, or Null if date is
/// too early to be DB compatible.</returns>
public static DateTime? ToNullIfTooEarlyFor...
What is the C# equivalent of NaN or IsNumeric?
...rks out if a string is numeric or not
/// </summary>
/// <param name="str">string that may be a number</param>
/// <returns>true if numeric, false if not</returns>
public static bool IsNumeric(this String str)
{
double myNum = 0;
if (...
Creating instance of type without default constructor in C# using reflection
...eInstance method:
public static Object CreateInstance(
Type type,
params Object[] args
)
Creates an instance of the specified
type using the constructor that best
matches the specified parameters.
See: http://msdn.microsoft.com/en-us/library/wcxyzt4d.aspx
...
Check to see if a string is serialized?
...izing Pascal MARTIN's response
/**
* Check if a string is serialized
* @param string $string
*/
public static function is_serial($string) {
return (@unserialize($string) !== false);
}
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When to use next() and return next() in Node.js
... it as:
app.get('/users/:id?', function(req, res, next){
var id = req.params.id;
if(!id)
return next();
// do something
});
It saves me an indentation level, and when I read the code again later, I'm sure there is no way next is called twice.
...
Display numbers with ordinal suffix in PHP
...) requires a timestamp (for ? above), we'll pass our integer $n as the day parameter to mktime() and use dummy values of 1 for the hour, minute, second, and month:
date( 'S' , mktime( 1 , 1 , 1 , 1 , $n ) );
This actually fails gracefully on values out of range for a day of the month (i.e. $n >...
Creating a zero-filled pandas data frame
...y run into int/float issue if you will be doing something like d.set_value(params) after initializing d to contain 0's. An easy fix is: d = pd.DataFrame(0.0, index=np.arange(len(data)), columns=feature_list).
– ximiki
Aug 29 '17 at 21:03
...
Looping over arrays, printing both index and value
...
you can always use iteration param:
ITER=0
for I in ${FOO[@]}
do
echo ${I} ${ITER}
ITER=$(expr $ITER + 1)
done
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...
How to check edittext's text is email address or not?
...
/**
* method is used for checking valid email id format.
*
* @param email
* @return boolean true for valid false for invalid
*/
public static boolean isEmailValid(String email) {
String expression = "^[\\w\\.-]+@([\\w\\-]+\\.)+[A-Z]{2,4}$";
Pattern pattern = Pattern.compile(ex...