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filtering NSArray into a new NSArray in Objective-C
...er: method (example).
Want somebody else to write that category, test it, etc.? Check out BlocksKit (array docs). And there are many more examples to be found by, say, searching for e.g. "nsarray block category select".
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Log all queries in mysql
..._file=/usr/log/general.log
in your my.cnf / my.ini file
Ubuntu/Debian: /etc/mysql/my.cnf
Windows: c:\ProgramData\MySQL\MySQL Server 5.x
wamp: c:\wamp\bin\mysql\mysqlx.y.z\my.ini
xampp: c:\xampp\mysql\bin\my.ini.
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What is the difference between aggregation, composition and dependency? [duplicate]
...ences which contain words.
Computer system has a hard disk, ram, processor etc.
So containment need not be physical. e.g., computer system has a warranty.
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Multiple Indexes vs Multi-Column Indexes
... 2) Clustered index should be a Relational Key, ie. not an IDENTITY, GUID, etc. 3) "Then an index with state, county, zip. will be used in all three of these searches." is false, and contradicts "the first column is usable". The 2nd & subs cols in the index are not usable for search.
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ssh remote host identification has changed
...0% sure that the remote computer isn't compromised, hacked, being spoofed, etc then all you need to do is delete the entry in your known_hosts file for the remote computer. That will solve the issue as there will no longer be a mismatch with SHA256 fingerprint IDs when connecting.
On Mac here's wha...
Can I try/catch a warning?
...bypass the error_reporting setting and pass all errors (notices, warnings, etc.) to your error handler. You can set a second argument on set_error_handler() to define which error types you want to receive, or access the current setting using ... = error_reporting() inside the error handler.
Suppres...
How would you access Object properties from within an object method? [closed]
...uent objects;Pen.dispenseInkOnto(Surface) makes more sense to me than Pen.getColor().
Getters and setters also encourage users of the class to ask the object for some data, perform a calculation, and then set some other value in the object, better known as procedural programming. You'd be better se...
Is there any connection string parser in C#?
...StringBuilder, MySqlConnectionStringBuilder, SQLiteConnectionStringBuilder etc (unfortunately there is no public interface from MS this time). Otherwise you have DbProviderFactory.CreateConnectionStringBuilder which will give you an alternate way to write it provider-agnostic way. You would need to ...
How to reverse a string in Go?
... you cannot use len() in Go to find out the length of a string/Array/Slice etc... Here's why? - len() in Go means the size of the input in bytes. It does not correspond to its length. - Not all utf8's runes are of the same size. It can be either 1, 2, 4, or 8. - You should use unicode/ut...
PostgreSQL: How to pass parameters from command line?
... -v v3="'2010-11-12'"
and then refer to the variables in sql as :v1, :v2 etc
select * from table_1 where id = :v1;
Please pay attention on how we pass string/date value using two quotes " '...' "
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