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Does every Core Data Relationship have to have an Inverse?
...se relationship doesn't just
make things more tidy, it's actually
used by Core Data to maintain data
integrity.
-- Cocoa Dev Central
You should typically model
relationships in both directions, and
specify the inverse relationships
appropriately. Core Data uses this
information t...
What can , and be used for?
...tadata>
does basically the following:
Get the request parameter value by name id.
Convert and validate it if necessary (you can use required, validator and converter attributes and nest a <f:converter> and <f:validator> in it like as with <h:inputText>)
If conversion and valid...
To underscore or to not to underscore, that is the question
...lds with an underscore in C# if the binary version is going to be consumed by other framework languages? For example since C# is case-sensitive you can call a field "foo" and the public property "Foo" and it works fine.
...
Move cursor to end of file in vim
...le for me, and is a nice easy keybind too
– Jacob Garby
Mar 29 '18 at 17:24
G keeps the column number the same (if pos...
How many socket connections can a web server handle?
...chieve in the order of millions of simultaneous active TCP connections and by extension HTTP request(s). This tells you the maximum performance you can expect with the right platform with the right configuration.
Today, I was worried whether IIS with ASP.NET would support in the order of 100 concurr...
Truststore and Keystore Definitions
...ontains CA certificates to trust. If your server’s
certificate is signed by a recognized CA, the default truststore
that ships with the JRE will already trust it (because it already
trusts trustworthy CAs), so you don’t need to build your own,
or to add anything to the one from the JRE.
Source...
How can I use PHP to dynamically publish an ical file to be read by Google Calendar?
...S require the *.ics-extension. If you are using .htaccess, you can make it by adding RewriteEngine on RewriteRule ^calendar.ics$ my_php_script.php [QSA]
– Fanky
Jan 25 '17 at 10:31
...
“static const” vs “#define” vs “enum”
... the use of a VLA (variable-length array), though the dimension referenced by 'var' would of course be fixed at size 5.
(1) cannot be used in places like switch statements; both (2) and (3) can.
(1) cannot be used to initialize static variables; both (2) and (3) can.
(2) can change code that you did...
How can I delete a newline if it is the last character in a file?
... eof' filename
[Editor's note: -pi -e was originally -pie, but, as noted by several commenters and explained by @hvd, the latter doesn't work.]
This was described as a 'perl blasphemy' on the awk website I saw.
But, in a test, it worked.
...
What is the fastest way to get the value of π?
...oned, applies some great concepts but it is, clearly, not the fastest, not by a long shot, not by any reasonable measure. Also, it all depends on what kind of accuracy you are looking for. The fastest π I know of is the one with the digits hard coded. Looking at Pi and Pi[PDF], there are a lot of f...