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How to check iOS version?
...o includes a method for performing version comparisons with less chance of error:
- (BOOL)isOperatingSystemAtLeastVersion:(NSOperatingSystemVersion)version
Projects targeting older systems can use systemVersion on UIDevice. Apple uses it in their GLSprite sample code.
// A system version of 3.1 ...
Why is there no String.Empty in Java?
...ength and List.length(). I would argue that is more confusing and prone to error. As for .append() and .push(), while they do perform similar tasks I think they appropriately named. Appending the String is exactly what you're doing, but you don't "append" a Stack, you push and pop values. And String...
Recursive lambda functions in C++11
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Hm, when trying, GCC 8.1 (linux) complained: error: use of ‘[...]’ before deduction of ‘auto’ – needed to explicitly specify return type (on the other hand, didn't need mutable).
– Aconcagua
Mar 23 '19 at 15:40
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Rails extending ActiveRecord::Base
... I like this idea because is a standard way of doing it but... I get an error Table 'moboolo_development.abstract_models' doesn't exist: SHOW FIELDS FROM abstract_models. Where should I put it?
– xpepermint
Feb 25 '10 at 7:59
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Force add despite the .gitignore file
...o" >> .gitignore; echo "bar" > foo; git add foo # should throw an error; git add -p foo # works (cannot paste newlines in comment, execute the commands 1 by 1
– Daniel Böhmer
Nov 5 '11 at 10:26
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How to find the length of a string in R
...the coercion is performed by nchar. For factor inputs, nchar will throw an error and hence you will need to do the conversion first as you show.
– Gavin Simpson
Mar 8 '13 at 16:07
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“Width equals height” constraint in Interface Builder
... constraints in IB, but when I try to compile the project, I get following error: Aspect ratio constraints with Xcode versions prior to 5.1. So maybe we have to wait for the final 5.1 version. Same for you, @Jano?
– Lukas Kubanek
Feb 10 '14 at 16:32
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JavaScript private methods
... // Returns '>>bar'
myObject.privateFun('>>'); // ReferenceError: private is not defined
The call function allows us to call the private function with the appropriate context (this).
Simpler with Node.js
If you are using node.js, you don't need the IIFE because you can take adv...
How to change owner of PostgreSql database?
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ERROR: must be member of role ... = DOES NOT WORK WITH RDS
– StartupGuy
Jul 25 '18 at 7:44
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Running a cron job at 2:30 AM everyday
...rontab: installing new crontab
"/tmp/crontab.tNt1NL/crontab":7: bad minute
errors in crontab file, can't install.
Do you want to retry the same edit? (y/n)
If you have further problems with crontab not running you can check Debugging crontab or Why is crontab not executing my PHP script?.
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