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Declaration/definition of variables locations in ObjectiveC?
... your confusion. Especially since recent updates to Xcode and the new LLVM compiler changed the way ivars and properties can be declared.
Before "modern" Objective-C (in "old" Obj-C 2.0) you didn't have a lot of choices. Instance variables used to be declared in the header between the curly bracket...
String literals and escape characters in postgresql
...n as a newline when I used it in the query argument to psql's `\copy' meta-command.
– Stew
Dec 31 '15 at 17:09
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Format in kotlin string templates
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How to reload the current state?
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155
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Execution of Python code with -m option or not
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When you use the -m command-line flag, Python will import a module or package for you, then run it as a script. When you don't use the -m flag, the file you named is run as just a script.
The distinction is important when you try to run a packag...
Using GPU from a docker container?
...up.
Install Docker
$ sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 36A1D7869245C8950F966E92D8576A8BA88D21E9
$ sudo sh -c "echo deb https://get.docker.com/ubuntu docker main > /etc/apt/sources.list.d/docker.list"
$ sudo apt-get update && sudo apt-get install lxc-...
How do I update devDependencies in NPM?
...to the local modules, run
npm update --save-dev
Alternatively, the same command to save time
npm update -D
You can view the full detail of update, or any command for that matter through
npm help <cmd>
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Difference between timestamps with/without time zone in PostgreSQL
...is specified with a particular time zone.
Here are examples covering the combinations of those factors:
foo=> SET TIMEZONE TO 'Japan';
SET
foo=> SELECT '2011-01-01 00:00:00'::TIMESTAMP;
timestamp
---------------------
2011-01-01 00:00:00
(1 row)
foo=> SELECT '2011-01-01 00:...
How to get the build/version number of your Android application?
... If you only want to get the application's version this is two compicated. You should use BuildConfig.VERSION_** as suggested here.
– Timo Bähr
Jun 20 '16 at 12:23
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Nullable vs. int? - Is there any difference?
...Nullable<int>, which itself is shorthand for Nullable<Int32>.
Compiled code will be exactly the same whichever one you choose to use.
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