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What happens with constraints when a view is removed
...] will NOT clear any constraints relating to A and C, and auto layout will start throwing exceptions, because those constraints no longer relate to views in the same hierarchy.
You will need to call [C removeFromSuperview] explicitly to remove the constraints, before adding C to B.
This is true on...
“User interaction is not allowed” trying to sign an OSX app using codesign
...hing for any CI-type runner or build system is to make sure the process is started from launchd correctly. Make sure your plist contains <SessionCreate> </true>.
Not correctly matching the the owner of the keychain with the build process and making sure a security session is created wi...
Why is “using namespace std;” considered bad practice?
...library with std::. Then I worked in a project where it was decided at the start that both using directives and declarations are banned except for function scopes. Guess what? It took most of us very few weeks to get used to writing the prefix, and after a few more weeks most of us even agreed that ...
Passing multiple error classes to ruby's rescue clause in a DRY fashion
...), Ruby is already equipped with a DRY exception handler mechanism:
puts 'starting up'
begin
case rand(3)
when 0
([] + '')
when 1
(foo)
when 2
(3 / 0)
end
rescue TypeError, NameError => e
puts "oops: #{e.message}"
rescue Exception => e
puts "ouch, #{e}"
end
puts 'don...
How can I split and parse a string in Python?
...as a single separator, and the result will contain no empty strings at the start or end if the string has leading or trailing whitespace".
Hold onto your hats boys, parse on a regular expression:
el@apollo:~/foo$ python
>>> mystring = 'zzzzzzabczzzzzzdefzzzzzzzzzghizzzzzzzzzzzz'
>>&...
How to get the path of a running JAR file?
... "_", ".", and "*". The character "%" is allowed but is interpreted as the start of a special escaped sequence.
...
There are two possible ways in which this decoder could deal with illegal strings. It could either leave illegal characters alone or it could throw an IllegalArgumentExceptio...
Cannot pass null argument when using type hinting
...
Starting from PHP 7.1, nullable types are available, as both function return types and parameters. The type ?T can have values of the specified Type T, or null.
So, your function could look like this:
function foo(?Type $t)...
Learning to write a compiler [closed]
...pilers.iecc.com/crenshaw/] series, it is really nice writeup and is a good starting point.
– TheVillageIdiot
May 31 '10 at 4:35
5
...
Are there any style options for the HTML5 Date picker?
...y: monospace;
overflow: hidden;
padding: 0;
-webkit-padding-start: 1px;
}
input::-webkit-datetime-edit {
-webkit-flex: 1;
-webkit-user-modify: read-only !important;
display: inline-block;
min-width: 0;
overflow: hidden;
}
input::-webkit-datetime-edit-fields-wrapp...
XmlWriter to Write to a String Instead of to a File
...s another way to do it. Particularly if you don't want the UTF8 BOM at the start of your string and you want the text indented:
using (var ms = new MemoryStream())
using (var x = new XmlTextWriter(ms, new UTF8Encoding(false))
{ Formatting = Formatting.Indented })
{
...