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Are C# events synchronous?
...l combined delegate
Here's what I did. The program I used:
public class Foo
{
// cool, it can return a value! which value it returns if there're multiple
// subscribers? answer (by trying): the last subscriber.
public event Func<int, string> OnCall;
private int val = 1;
...
Can “using” with more than one resource cause a resource leak?
...e make that a little bit more clear. Suppose we have:
public sealed class Foo : IDisposable
{
private int handle = 0;
private bool disposed = false;
public Foo()
{
Blah1();
int x = AllocateResource();
Blah2();
this.handle = x;
Blah3();
}
...
Is std::vector copying the objects with a push_back?
...o exactly what you want. My favorite idiom is typedef boost::shared_ptr<Foo> FooPtr; Then make containers of FooPtrs
– pm100
Feb 16 '10 at 18:00
...
Viewing a Deleted File in Git
...back and don't want to hunt for a revision, you can use (the file is named foo in this example; you can use a full path):
git show $(git rev-list --max-count=1 --all -- foo)^:foo
The rev-list invocation looks for all the revisions of foo but only lists one. Since rev-list lists in reverse chronol...
Undefined reference to static constexpr char[]
...
Add to your cpp file:
constexpr char foo::baz[];
Reason: You have to provide the definition of the static member as well as the declaration. The declaration and the initializer go inside the class definition, but the member definition has to be separate.
...
Elasticsearch query to return all records
...
I think lucene syntax is supported so:
http://localhost:9200/foo/_search?pretty=true&q=*:*
size defaults to 10, so you may also need &size=BIGNUMBER to get more than 10 items. (where BIGNUMBER equals a number you believe is bigger than your dataset)
BUT, elasticsearch documen...
How do you add an array to another array in Ruby and not end up with a multi-dimensional result?
...ng place -- it flattens its receiver, so you could use it to turn [1, 2, ['foo', 'bar']] into [1,2,'foo','bar'].
I'm doubtless forgetting some approaches, but you can concatenate:
a1.concat a2
a1 + a2 # creates a new array, as does a1 += a2
or prepend/append:
a1.push(*a2) #...
MySQL search and replace some text in a field
...name and field in question:
UPDATE table_name SET field = REPLACE(field, 'foo', 'bar') WHERE INSTR(field, 'foo') > 0;
REPLACE (string functions)
INSTR (string functions)
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Can I get JSON to load into an OrderedDict?
...> json.JSONDecoder(object_pairs_hook=collections.OrderedDict).decode('{"foo":1, "bar": 2}')
OrderedDict([('foo', 1), ('bar', 2)])
>>>
You can pass this parameter to json.loads (if you don't need a Decoder instance for other purposes) like so:
>>> import json
>>> fro...
Parse query string in JavaScript [duplicate]
...mpire State Building&spaces=these+are+pluses';
tests['with equals'] = 'foo=bar&baz=quux&equals=with=extra=equals&grault=garply';
tests['no value'] = 'foo=bar&baz=&qux=quux';
tests['value omit'] = 'foo=bar&baz&qux=quux';
var $output = document.getElementById('output')...