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What are the differences between Rust's `String` and `str`?
... and that data can be anywhere, e.g.
In static storage: a string literal "foo" is a &'static str. The data is hardcoded into the executable and loaded into memory when the program runs.
Inside a heap allocated String: String dereferences to a &str view of the String's data.
On the stack: ...
What is the difference/usage of homebrew, macports or other package installation tools? [closed]
...ne command. Forget to do the same with Homebrew.
MacPorts support groups.
foo@macpro:~/ port select --summary
Name Selected Options
==== ======== =======
db none db46 none
gcc none gcc42 llvm-gcc42 mp-gcc48 none
llvm none m...
PDO's query vs execute
...Which means you can do:
$sth = $db->prepare("SELECT * FROM table WHERE foo = ?");
$sth->execute(array(1));
$results = $sth->fetchAll(PDO::FETCH_ASSOC);
$sth->execute(array(2));
$results = $sth->fetchAll(PDO::FETCH_ASSOC);
They generally will give you a performance improvement, alt...
Populating a ListView using an ArrayList?
..._array_list = new ArrayList<String>();
your_array_list.add("foo");
your_array_list.add("bar");
// This is the array adapter, it takes the context of the activity as a
// first parameter, the type of list view as a second parameter and your
// arr...
Correct way to use StringBuilder in SQL
...till use a single StringBuilder if you were to use return "select id1, " + foo + "something else" + bar; - so why not do that? The question provides no indication that anything needs to pass the StringBuilder around.
– Jon Skeet
Jan 4 '12 at 11:51
...
NumPy: function for simultaneous max() and min()
...ge when the second if is replaced by an elif.
– Fred Foo
Aug 30 '12 at 16:35
2
Small note: I doub...
How to call asynchronous method from synchronous method in C#?
I have a public async void Foo() method that I want to call from synchronous method. So far all I have seen from MSDN documentation is calling async methods via async methods, but my whole program is not built with async methods.
...
Why use static_cast(x) instead of (int)x?
...ngerous. You tell the compiler: "trust me: I know this doesn't look like a foo (this looks as if it isn't mutable), but it is".
The first problem is that it's almost impossible to tell which one will occur in a C-style cast without looking at large and disperse pieces of code and knowing all the r...
how to split the ng-repeat data with three columns using bootstrap
...splay it in a table.
<table>
<tr class="" ng-repeat="rows in foos | chunk:2">
<td ng-repeat="item in rows">{{item}}</td>
</tr>
</table>
share
|
...
What is declarative programming? [closed]
.... wait for it ...) Turn Right." to "Bob will turn left at intersection of Foo and Bar at 11:01. Bob will turn right at the intersection of Bar and Baz at 11:06." Note that in the latter case the sentences are idempotent and commutative, whereas in the former case rearranging or repeating the senten...