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UIDevice uniqueIdentifier deprecated - What to do now?
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A UUID created by CFUUIDCreate is unique if a user uninstalls and re-installs the app: you will get a new one each time.
But you might want it to be not unique, i. e. it should stay the same when the user uninstalls and re-installs the app...
Do threads have a distinct heap?
...far as I know each thread gets a distinct stack when the thread is created by the operating system. I wonder if each thread has a heap distinct to itself also?
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config.assets.compile=true in Rails production, why not?
The default Rails app installed by rails new has config.assets.compile = false in production.
7 Answers
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List files in local git repo?
... --name-only HEAD
lists all of the already committed files being tracked by your git repo.
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Difference between git checkout --track origin/branch and git checkout -b branch origin/branch
...te 'abranch', not a branch with a different name.
(That is, as commented by Sebastian Graf, if the local branch did not exist already.
If it did, you would need git checkout -B abranch origin/abranch)
Note: with Git 2.23 (Q3 2019), that would use the new command git switch:
git switch -c <b...
Where is the list of predefined Maven properties
... Usually, when you edit pom.xml in Intellij IDEA, it helps greatly by providing options for anything that looks like a Maven property (e.g. ${...})
– Kedar Mhaswade
Feb 17 '16 at 22:29
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Why start a shell command with a backslash?
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Aliases can be used in scripts by using shopt -s expand_aliases before use of the alias
– Alex
Mar 28 '13 at 21:06
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Oracle PL/SQL - How to create a simple array variable?
...DBMS_SQL.VARCHAR2_TABLE to hold an in-memory variable length array indexed by a BINARY_INTEGER:
DECLARE
name_array dbms_sql.varchar2_table;
BEGIN
name_array(1) := 'Tim';
name_array(2) := 'Daisy';
name_array(3) := 'Mike';
name_array(4) := 'Marsha';
--
FOR i IN name_array.FIRST ....
What is the direction of stack growth in most modern systems?
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If the CPU provides any kind of choice, the ABI / calling convention used by the OS specifies which choice you need to make if you want your code to call everyone else's code.
The processors and their direction are:
x86: down.
SPARC: selectable. The standard ABI uses down.
PPC: down, I think.
S...
How to change 'Maximum upload size exceeded' restriction in Shiny and save user file inputs?
...d that R Shiny programs impose a maximum size restriction for file uploads by default (I don't know what the size is exactly, but I'm guessing it's 5,000 KB). I'd like to remove this restriction. How can I do so, and what is there a general rule of thumb for the size of user uploads?
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