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What is the difference between “text” and new String(“text”)?
...al is needed, use of this constructor is unnecessary since strings are immutable.
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Java Strings: “String s = new String(”silly“);”
Strings are objects in Java, so why don’t we use ‘new’ to create them?
What referential distinction means
Examine the follow...
SQL: How to properly check if a record exists
...
It's better to use either of the following:
-- Method 1.
SELECT 1
FROM table_name
WHERE unique_key = value;
-- Method 2.
SELECT COUNT(1)
FROM table_name
WHERE unique_key = value;
The first alternative should give you no result or one result, the second count should be zero or one.
How old is...
Looking to understand the iOS UIViewController lifecycle
...mes when subviews of the main view are loaded, for example when cells of a table view or collection view are loaded.
UPDATE - As @Maria pointed inside comment, description of loadView was updated
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Why does Hibernate require no argument constructor?
... the @JsonCreator annotation in Jackson does this, and much benefit of immutable objects was had.
– drrob
May 22 '17 at 11:03
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What's faster, SELECT DISTINCT or GROUP BY in MySQL?
If I have a table
15 Answers
15
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How to implement if-else statement in XSLT?
...attribute exists-->
<p>
<dd><table border="1">
<tbody>
<tr>
<th>File Name</th>
<th>File Size</th>
...
WCF vs ASP.NET Web API [closed]
...
this table is meaningless. "JQuery" (scare quotes for the capital J) is a protocol and/or format?
– hyankov
Sep 2 '17 at 18:39
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How do I enumerate the properties of a JavaScript object? [duplicate]
...is needed and used because javascript conflates "Actor objects" with "Hash tables". when the object is a description of behaviors and traits, then the usual rules apply, you want to know about the properties on the object without concern for how they got there. If, on the other hand, your using th...
How can I reliably get an object's address when operator& is overloaded?
... Function-to-Pointer conversion both having "Exact Match" rank (13.3.3.1.1 table 9).
The reference to function pass through addr_impl_ref, there is an ambiguity in the overload resolution for the choice of f, which is solved thanks to the dummy argument 0, which is an int first and could be promote...
Why isn't sizeof for a struct equal to the sum of sizeof of each member?
...mbers-order-guarantee in C++. Compilers may (and certainly do) add virtual table pointer and base structures' members to the structure. Even the existence of virtual table is not ensured by the standard (virtual mechanism implementation is not specified) and therefore one can conclude that such guar...