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When should you use a class vs a struct in C++?
... class that has no non-static data members of type non-POD-struct, non-POD-union (or array of such types) or reference, and has no user-defined copy assignment operator and no user-defined destructor." There is no restriction on using the "struct" class-key and no restriction on using "public" (see...
How to create strings containing double quotes in Excel formulas?
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Have you tried escaping with a double-quote?
= "Maurice ""The Rocket"" Richard"
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How to prevent XSS with HTML/PHP?
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Basically you need to use the function htmlspecialchars() whenever you want to output something to the browser that came from the user input.
The correct way to use this function is something like this:
echo htmlspecialchars($string, ENT_QUOTES, 'UTF-8');
Google Code Uni...
in_array multiple values
... developer, you should probably start learning set operations (difference, union, intersection). You can imagine your array as one "set", and the keys you are searching for the other.
Check if ALL needles exist
function in_array_all($needles, $haystack) {
return empty(array_diff($needles, $hays...
MySQL ERROR 1045 (28000): Access denied for user 'bill'@'localhost' (using password: YES)
...=/tmp/mysql-5.5.sock
Welcome to the MySQL monitor (...)
mysql> SELECT user, host FROM mysql.user;
+------+-----------+
| user | host |
+------+-----------+
| bill | % |
| root | 127.0.0.1 |
| root | ::1 |
| root | localhost |
+------+---...
How can i query for null values in entity framework?
...try in table
where entry.something.Equals(value)
select entry;
Workaround for Linq-to-Entities (ouch!):
var result = from entry in table
where (value == null ? entry.something == null : entry.something == value)
select entry;
This is a nasty b...
Passing an array by reference
...an be passed by reference OR by degrading to a pointer. For example, using char arr[1]; foo(char arr[])., arr degrades to a pointer; while using char arr[1]; foo(char (&arr)[1]), arr is passed as a reference. It's notable that the former form is often regarded as ill-formed since the dimension...
How to develop a soft keyboard for Android? [closed]
... is showing in setting option with built in keyboard, but in actual when i select my custom keyboard to replace inbuilt keyboard my app in crashing. Do you have any idea where i am going wrong?
– Aniket
Oct 10 '13 at 9:39
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What is the MySQL VARCHAR max size?
I would like to know what the max size is for a MySQL VARCHAR type.
7 Answers
7
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Apply function to all elements of collection through LINQ [duplicate]
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@BKSpurgeon: Select is a projection: 1) it's lazily evaluated; just calling it won't do anything. 2) Select produces a result - ForEach doesn't.
– Jon Skeet
Mar 20 '17 at 9:24
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