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How do I achieve the theoretical maximum of 4 FLOPs per cycle?
... instructions inside the inner loop. You'll notice that it's broken into 4 blocks of 12 instructions each. Each of these 12 instructions blocks are completely independent from each other - and take on average 6 cycles to execute.
So there's 12 instructions and 6 cycles between issue-to-use. The lat...
mongodb: insert if not exists
...t be passed as a keyword argument
This replaces your if-find-else-update block entirely. It will insert if the key doesn't exist and will update if it does.
Before:
{"key":"value", "key2":"Ohai."}
After:
{"key":"value", "key2":"value2", "key3":"value3"}
You can also specify what data you w...
NoSQL - MongoDB vs CouchDB [closed]
...ction,
thus, master-master replication. (!)
MVCC - write operations do not block reads
Previous versions of documents are available
Crash-only (reliable) design
Needs compacting from time to time
Views: embedded map/reduce
Formatting views: lists & shows
Server-side document validation possible
...
What does “var FOO = FOO || {}” (assign a variable or an empty object to that variable) mean in Java
...ually the scope would be fine in your last example because JS doesn't have block scope
– Alnitak
Jun 22 '11 at 12:17
@...
Passing references to pointers in C++
...le, a function that allocates memory and assigns the address of the memory block it allocated to its argument must take a reference to a pointer, or a pointer to pointer:
void myfunc(string*& val)
{
//val is valid even after function call
val = new std::string("Test");
}
...
What is the easiest way to duplicate an activerecord record?
...tall amoeba
or add
gem 'amoeba'
to your Gemfile
then add the amoeba block to your model and run the dup method as usual
class Post < ActiveRecord::Base
has_many :comments
has_and_belongs_to_many :tags
amoeba do
enable
end
end
class Comment < ActiveRecord::Base
belongs_t...
The communication object, System.ServiceModel.Channels.ServiceChannel, cannot be used for communicat
...eption("Error xy in my function")
perhaps you can try..catch the whole block and throw a FaultException in all cases of an Exception
try
{
... some code here
}
catch (Exception ex)
{
throw new FaultException(ex.Message)
}
Tell WCF to handle all Exceptions using an Errorhan...
App Inventor 2 中文网原创内容 · App Inventor 2 中文网
...g:hover { color: #3773f5 } .feedback-pop .feedback-img { display: inline-block; width: 24px; height: 24px; margin-bottom: 4px; background: url(/static/images/feedback.svg) 50% / 100% auto no-repeat; } 文档反馈 切换 目录 在线 客服 ...
Angularjs loading screen on ajax request
...ivityspinner
{
display : none;
}
#activityspinner.show {
display : block;
position : fixed;
z-index: 100;
background-image : url('data:image/gif;base64,R0lGODlhNgA3APMAAPz8/GZmZqysrHV1dW1tbeXl5ZeXl+fn59nZ2ZCQkLa2tgAAAAAAAAAAAAAAAAAAACH/C05FVFNDQVBFMi4wAwEAAAAh/hpDcmVhdGVkIHdpdGgg...
How to directly initialize a HashMap (in a literal way)?
...e garbage collected while the created map object is still referenced, thus blocking additional memory
Using a function for initialization will also enable you to generate a map in an initializer, but avoids nasty side-effects:
Map<String, String> myMap = createMap();
private static Map<...