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How much is the overhead of smart pointers compared to normal pointers in C++?
How much is the overhead of smart pointers compared to normal pointers in C++11? In other words, is my code going to be slower if I use smart pointers, and if so, how much slower?
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How do you make a deep copy of an object?
... final or can't be modified, extend the class and implement serializable.
Convert your class to a stream of bytes:
ByteArrayOutputStream bos = new ByteArrayOutputStream();
ObjectOutputStream oos = new ObjectOutputStream(bos);
oos.writeObject(object);
oos.flush();
oos.close();
bos.close();
byte[] b...
How to split a string literal across multiple lines in C / Objective-C?
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I am having this problem all the time, so I made a tiny tool to convert text to an escaped multi-line Objective-C string:
http://multilineobjc.herokuapp.com/
Hope this saves you some time.
share
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Switch statement for string matching in JavaScript
...h");
break;
}
Another approach is to use the String() constructor to convert the resulting array that must have only 1 element (no capturing groups) and whole string must be captured with quanitifiers (.*) to a string. In case of a failure the null object will become a "null" string. Not conve...
How to use GROUP_CONCAT in a CONCAT in MySQL
...SEPARATOR ',') AS result
FROM test GROUP BY id
you must use cast or convert, otherwise will be return BLOB
result is
id Column
1 A:4,A:5,B:8
2 C:9
you have to handle result once again by program such as python or java
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Laravel Migration Change to Make a Column Nullable
...`user_id` INTEGER UNSIGNED NOT NULL;');
}
One note is that since you are converting between nullable and not nullable, you'll need to make sure you clean up data before/after your migration. So do that in your migration script both ways:
function up()
{
DB::statement('ALTER TABLE `throttle` M...
How can I solve a connection pool problem between ASP.NET and SQL Server?
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If your function returns SqlDataReader you are better off converting it to DataTable than raising the max pool size
– live-love
Dec 8 '14 at 20:12
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MySQL offset infinite rows
...nt to watch out because you won't be able to store this value in an 32 bit integer. You have to make sure you store this as a string to ensure compatibility.
– AlicanC
Dec 7 '11 at 22:51
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Using “super” in C++
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After I few months, I was converted to your viewpoint (and I DID had a bug because of a forgotten "super", like you mentionned...). You are quite right in your answer, including the chaining, I guess. ^_^ ...
– paercebal
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Open file dialog box in JavaScript
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You should convert this to normal Javascript, JQuery isnt logical to use on such a small project ^_^
– Mister SirCode
Oct 11 '19 at 13:11
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