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“Use of undeclared type” in Swift, even though type is internal, and exists in same module
...tered this error when my test target did not have some swift files that my app build target had in compile sources. It was very confusing because the 'undeclared type' was being used in so many other places with no problem, and the error seemed vague. So solution there was of course to add the fi...
Position icons into circle
...for showing the angles whenever you hover one of them).
You first need a wrapper. I set its diameter to be 24em (width: 24em; height: 24em; does that), you can set it to whatever you want. You give it position: relative;.
You then position your links with the images in the center of that wrapper, bo...
Database Design for Revisions?
...stName = 'Doe' results in a full table scan. Not the best idea to scale an application.
– Kaii
Aug 13 '18 at 21:17
...
PDO MySQL: Use PDO::ATTR_EMULATE_PREPARES or not?
... schemas need special construction to make maximum use of the cache. Often application-level caching ends up being necessary anyway in the long run.
Native prepares doesn't make any difference for security. The pseudo-prepared statements will still escape query parameter values, it will just be done...
When NOT to use yield (return) [duplicate]
...d)
public IEnumerable<string> GetKeys()
{
foreach(string key in _someDictionary.Keys)
yield return key;
}
// DO this
public IEnumerable<string> GetKeys()
{
return _someDictionary.Keys;
}
Avoid using yield return when you don't want to defer execution code for the metho...
What's valid and what's not in a URI query?
...> -> %3E
? -> ?
@ -> @
[ -> [
\ -> \
] -> ]
^ -> ^
_ -> _
` -> `
{ -> {
| -> |
} -> }
~ -> ~
Extended ASCII (like °) -> Every character from this set is encoded
Note: That probably doesn't mean you shouldn't escape characters that didn't get replaced ...
Using Auto Layout in UITableView for dynamic cell layouts & variable row heights
...ticDimension
}
// number of rows in table view
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return self.animals.count
}
// create a cell for each table view row
func tableView(_ tableView: UITableView, cellForRowAt indexPa...
When do Java generics require
...ally instantiated via reflection and used based on the key. (A distributed app where the client doesn't have the server classes available, just the key of which class to use to do the server side work).
– Yishai
May 22 '09 at 14:21
...
Reading/writing an INI file
...
Maybe a more traditional default would be per-application (not per-assembly) .ini files like Path.GetFullPath(IniPath ?? Path.ChangeExtension(Application.ExecutablePath, ".ini")).
– Eugene Ryabtsev
Apr 21 '16 at 10:44
...
How can I get useful error messages in PHP?
...is page in the PHP documentation for information on the 2 directives: error_reporting and display_errors. display_errors is probably the one you want to change. If you can't modify the php.ini, you can also add the following lines to an .htaccess file:
php_flag display_errors on
php_value e...