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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<...
Using Sass Variables with CSS3 Media Queries
... // additional specific changes, that aren't in the mixin
display: block
And the Mixin would look like this
=base_width_changes($base_width)
#wrapper
width: $base_width
share
|
...
Remove file from the repository but keep it locally
...
@loostro just don't move it to another block device. The most file systems will just update the file's inode, and not literally move the entire directory
– 648trindade
Mar 28 '18 at 4:11
...
Gmail Error :The SMTP server requires a secure connection or the client was not authenticated. The s
...t: go to security.google.com/settings/security/activity and here you'l see blocked connection from your code. Allow them and it should help in this case.
– Alex Zhukovskiy
Oct 2 '14 at 12:45
...