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What is the motivation for Scala assignment evaluating to Unit rather than the value assigned?
A common pattern in I/O programming is to do things like this:
while ((bytesRead = in.read(buffer)) != -1) { ...
But this is not possible in Scala because.....
Started by Graham Lea on
, 8 posts
by 8 people.
Answer Snippets (Read the full thread at stackoverflow):
Martin and I went back and forth on it, but his .
assignments return the value assigned rather than unit.
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Say I have the following:
@interface MyClass : NSObject { NSString* _foobar; } @property (nonatomic, retain) NSString* foobar; @end @implementation MyClass @dynamic foobar; - (void) setFoobar:(NSString*)fbSet; { [_foobar release]; _foobar = [fbSet retain...
Started by rpj on
, 5 posts
by 5 people.
Answer Snippets (Read the full thread at stackoverflow):
I'd say that it's simply assumed the getter will return the same value that was just assigned the value being assigned....
In C, assignment is an expression, which evaluates to the assigned value
Quick Summary:
The quick afterwards.
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As in title, do outgoing smtp servers need to have assigned domains?
Started by zimekzimny on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at serverfault):
They don't need to have them per any standard in existence - however, as any mail admin with... .
Many sites will reject mail from you if your mail servers IP address does not resolve to a hostname .
It's not required as far as I know, but it can help .
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Ask your Facebook Friends
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Is there a command within the bash shell of fedora that will give me the currently assigned IP address?
Started by dacracot on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
Ifconfig is what you're looking for
ipconfig getifaddr eth0.
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In C++:
On stack, a simple variable is assigned a memory address so that we can use pointer to contain this memory to point to it; then is a pointer also assigned a memory address? if yes, we can have pointer of pointers now?
Thanks!
Answer Snippets (Read the full thread at stackoverflow):
In short, if you never take the address of an object, the compiler doesn't have to assign.
Stackoverflow.com/questions/316194/is-primitive-assigned-a-memory-address#316310 , the same applies to pointers too.
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Is there an easy way within C# to check to see if a DateTime instance has been assigned a value or not?
Started by Moo on
, 7 posts
by 7 people.
Answer Snippets (Read the full thread at stackoverflow):
The only way of having a variable which hasn't been assigned a value in C# is for it to be a local variable - in which case at compile-time you can tell that it isn't definitely assigned by trying syntactic sugar) - make it null to start....
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How do I check to see if a particular value has already been assigned to Smarty and if not assign a (default) value?
Answer:
if ($this->cismarty->get_template_vars('test') === null) { $this->cismarty->assign('test', 'Default value'); }
Started by GloryFish on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
If ($smarty->get_template_vars('foo') === null) { $smarty->assign('foo', 'some value'); }
Pretty sure you can do:
if (!isset($smarty['foo'])) { $smarty->assign('foo', 'some value'); }
get_template_vars('test') === null) { echo....
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In Delphi, why does the Assigned() function still return True after I call the destructor?
The below example code will write "sl is still assigned" to the console.
However, I can call FreeAndNil(sl); and it won't be assigned.
I've been programming in ...
Started by JosephStyons on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
assigned and must be cleared separately (not with FreeAndNil because it points to the already freed.
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How would I query MySQL database to return roles that are still not assigned (like available to him).
With table user_roles:
|user_id|role_id| | 1 | 1 | | 1 | 2 | | 1 | 4 | | 1 | 7 |
How can I query roles table to return role name and id of all the roles...
Started by LukeP on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
SELECT * FROM roles WHERE roles.id NOT IN (SELECT.
Roles)
if you want roles not assigned to user 1.
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Hey guys,
I need to assign an array to a field. I dont know the fields type, but I do have a reference to an instance and the name of the field. I can assume the array can be casted to the fields type. Can this be done?
Bas
Edit:
Hopefully this code will...
Started by Bas Smit on
, 5 posts
by 5 people.
Answer Snippets (Read the full thread at stackoverflow):
B()}; t.Assign(a, "field", c); } void Assign(object obj, string field, object[] value) { FieldInfo.
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