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Hidden Features of Xcode
...ode
This trick works in all Cocoa application on the Mac (TextEdit, Mail, etc.) and is possibly one of the most useful things to know.
Command ⌘ Left Arrow or Command ⌘ Right Arrow Takes you to the beginning and end of a line.
Control ^ a and Control ^ e Do the same thing
Control ^ n...
Is there a good reason to use upper case for SQL keywords? [closed]
...ated somewhere in 90s) all tablenames, columns, indexes, stored procedures etc. are all capitalised, hence we go for lowercase SQL keywords. ;)
– Andreas
Nov 25 '15 at 12:23
1
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C++ Double Address Operator? (&&)
...d::move. Showing what would happen with int&& c = std::move( b );, etc.
– Zzzach...
Jul 24 '19 at 21:00
4
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how to stop browser back button using javascript
...dows 10. I put the script in several places (start of header, end of body, etc.) and I can still use the back button to go back to the previous page.
– Victor Stoddard
Jan 18 '17 at 21:37
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When to use ko.utils.unwrapObservable?
...that checks permissions, or determines what to do based on something else, etc). What I really needed was to unwrap any function, even if it's not an observable.
The following recursively unwraps EVERYTHING:
ko.utils.unwrapFunction = function (func) {
if (typeof func != 'function') {
r...
What Java ORM do you prefer, and why? [closed]
...ut it on the Internet. There are many tutorials, common problem solutions, etc
is powerful - you can translate a very complex object model into a relational model.
it has support for any major and medium RDBMS
is easy to work with, once you learn it well
A few points on why (and when) to use ORM:
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python setup.py uninstall
...aging tool/version are you using for this to work? (distutils, distribute, etc...)
– Ciro Santilli 郝海东冠状病六四事件法轮功
May 4 '13 at 14:21
1
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Using a remote repository with non-standard port
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on a windows machine: c:/windows/system32/drivers/etc/hosts to set a host name if needed (e.g. virtual machines / servers)
– user3791372
Feb 21 '17 at 9:36
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Android Task Affinity Explanation
...owing. If you close E, D will be shown. If you close D, C will be shown. etc.
Notice that Activities B and D are the same activity. What if the user were to make some modifications to the D weather screen, and then decided to close the activity, then close the C Map view?
Then the user would be...
Why doesn't JavaScript support multithreading?
...All Chrome does is separate multiple components (different tabs, plug-ins, etcetera) into separate processes, but I can’t imagine a single page having more than one JavaScript thread.
You can however use, as was suggested, setTimeout to allow some sort of scheduling and “fake” concurrency. Th...