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In which situations do we need to write the __autoreleasing ownership qualifier under ARC?
...All of this is very well explained in the ARC transition guide.
In your NSError example, the declaration means __strong, implicitly:
NSError * e = nil;
Will be transformed to:
NSError * __strong error = nil;
When you call your save method:
- ( BOOL )save: ( NSError * __autoreleasing * );
T...
Error renaming a column in MySQL
...
I think the column contains a foreign key to getting the error of the answer so you have to Drop foreign key, alter table, and add foreign key (it's better to backup first) and u can alter it by only changing the name in right click on the table - alter table
–...
“Cross origin requests are only supported for HTTP.” error when loading a local file
...are loading the model using either file:// or C:/, which stays true to the error message as they are not http://
So you can either install a webserver in your local PC or upload the model somewhere else and use jsonp and change the url to http://example.com/path/to/model
Origin is defined in RFC-6...
How to delete the contents of a folder?
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@JohnHany, I believe you want to catch OSError.
– MikeB
Apr 7 '18 at 20:13
I'm getti...
vector::at vs. vector::operator[]
...ell, the official response to that is that out_of_range derives from logic_error, and other programmers "should" know better than to catch logic_errors upstream and ignore them. assert can be ignored too if your colleagues are keen not to know about their mistakes, it's just harder because they have...
Remove sensitive files and their commits from Git history
...# make sure we're at the root of git repo
if [ ! -d .git ]; then
echo "Error: must run this script from the root of a git repository"
exit 1
fi
# remove all paths passed as arguments from the history of the repo
files=$@
git filter-branch --index-filter \
"git rm -rf --cached --ignore-unmat...
Which .NET Dependency Injection frameworks are worth looking into? [closed]
...poor man's DI is Interception. Good summary here: kenneth-truyers.net/2013/05/16/…
– Mathieu Guindon
Jul 25 '13 at 16:54
1
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JSON.NET Error Self referencing loop detected for type
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Use JsonSerializerSettings
ReferenceLoopHandling.Error (default) will error if a reference loop is encountered. This is why you get an exception.
ReferenceLoopHandling.Serialize is useful if objects are nested but not indefinitely.
ReferenceLoopHandling.Ignore will not seri...
How do I write outputs to the Log in Android?
... in Log.w(...) stands for warning. There are more versions: d - debug, e - error, i - info, v - verbose, wtf - What a Terrible Failure. ;-)
– patryk.beza
May 19 '16 at 10:13
...
Returning JSON from a PHP Script
...ail (and return false) if its argument contains a non UTF-8 string.
This error condition should be captured in PHP, for example like this:
<?php
header("Content-Type: application/json");
// Collect what you need in the $data variable.
$json = json_encode($data);
if ($json === false) {
//...