In DFP, I have something like this:
googletag.pubads().setTargeting('age', ['35to44']).setTargeting('gender', ['female']);
Do I have to chain those setTargeting statements, or can I do something like this:
googletag.pubads().setTargeting('age', ['35to44']);
googletag.pubads().setTargeting('gender', ['female']);
The latter is easier for some programmatic targeting we're attempting to do.
Thanks!
You can do both.
See the first example on this page.
I also use the non chaining method in my jQuery DFP plugin and it works really well.
Related
I want to change the default category sorting from whatever it is by default to NEWSEST FIRST. Seems like there is no way to set this in the backend, so how can I achieve this?
Well, I think there are two ways.
Create your own sort option in a module using a plugin. Something like this: https://magento.stackexchange.com/questions/96095/magento-2-how-to-add-custom-sort-by-option. Look at Luca S's answer. I think this person has a general idea of how to do it.
Use Position option but modified:
http://magento2x.com/magento-sort-newest-products-solution/.
I dont like how they both override stuff, but hopefully this will give you a starting point. Good Luck.
I'm doing some competitions on a website called topcoder.com where the objective is to solve algorithmic problems. I'm using Eclipse for this purpose, and I code in Java, it would be help me to have some predefined templates or macros that I can use for common coding tasks. For example I would like to write methods to be able to find the max value in and int[] array, or the longest sequence in an int[] array, and so on (there should be quite many of these). Note I can't write these methods as libraries because as part of the competition I need to submit everything in one file.
Therefore ideally, I would like to have some shortcut available to generate code both as a method and as a calling statement at once. Any ideas if this is possible?
Sure you can - I think that's a nifty way to auto-insert boilerplate or helper code. To the point of commenters, you probably want to group the code as a helper class, but the general idea sounds good to me:
You can see it listed in your available templates:
Then as you code your solution, you can Control+Space, type the first few characters of the name you gave your template, and you can preview it:
And then you can insert it. Be sure if you use a class structure to position it as an inner class:
Lastly - if you want to have a template inserts a call to method from a template, I think you would just use two templates. One like shown above (to print the helper code) and another that might look like this, which calls a util method and drops the cursor after it (or between the parentheses if you'd like, etc):
MyUtils.myUtilMethod1();${cursor}
Occasionally, I find myself in situations where it would be useful to do something like this:
HTML::FormHandler::Field::Text->new(
name=>'name',
label=>'Name',
value=>'Ryan'
)->render();
There's nothing in the docs I've found that indicate that this shouldn't work. But apparently it doesn't because I get an error saying that the render routine doesn't exist in HTML::FormHandler::Field::Text.
Maybe I'm misunderstanding how widgets get applied and rendered, but I sure wish this or some alternative worked! Sometimes, it doesn't make sense to build up a whole "form" just for one field. Any thoughts?
It is called chaining. It is only going to work if method returns $self.
An article about this: http://www.perlmonks.org/?node_id=448444
Regards,
A week or two ago I just started using Zend Framework seriously and have had trouble escaping manually with Zend_View::escape().
Does anyone knows how to escape vars in templates (Zend_View templates) automatically without using $this->escape(), or any other tricky ways like output buffering and PREG replacing *.phtml files.
I'd like to know the best practice in this case.
You can extend Zend_View to create a custom view class which autoescapes things, or you can use a view helper to turn autoescaping on/off.
I have written a blogpost about it, with example code for both approaches:
How to automatically escape template variables in Zend_View
Over at the PiKe project we build a custom stream wrapper that automatically escapes all view variables, with a MINIMAL performance hit! You can still get the RAW value with:
<?=~ $variable ?>
Notice the "~" character. Checkout http://code.google.com/p/php-pike/wiki/Pike_View_Stream
I know you said that you want to avoid "tricky ways like output buffering and PREG replacing *.phtml files.", but I still think it's a very neat way to fix auto escaping in Zend Framework 1.
You said "automatically", so I believe that that means when you do echo $this->var; you want it escaped. Well, if that's the case, maybe you could do the escaping when the variable is set to the view. AFAIK it's done in the Zend_View_Abstract class' __set magic method* (around line 300). Changing the core ZF code is not recommended, so you could go by extending Z_V_A or Z_V and just override the __set method.
*I'm not 100% sure that Z_V_A::__set is the only place where the params are assigned to the view, but I think it should be. Can't think of any other place for that.
Edit: Personally, I'd avoid this and just stick with the good ol' $this->escape(). More typing but less magic going on in the background.
You have asked for best practice then what you are doing is already it.
Wait till when you want to display your data before modifying it only for output reasons.
I understand you find writting ->escape() everytime tedious but its still the way to go.
If you where to auto escape everything then you would run into problems one day when you want/need unescaped data.
ZendX_View_Autoescaping, this project provides you a ViewRenderer with autoescaping of all assigned view variables.
https://github.com/jensklose/ZendX_View_Autoescaping
Try it!
It supports:
escaping into deep data structures
escaping the array keys
possibility to switch the escaping context (html, json, nofilter)
Do you use table-of-contents for listing all the functions (and maybe variables) of a class in the beginning of big source code file? I know that alternative to that kind of listing would be to split up big files into smaller classes/files, so that their class declaration would be self-explanatory enough.. but some complex tasks require a lot of code. I'm not sure is it really worth it spending your time subdividing implementation into multiple of files? Or is it ok to create an index-listing additionally to the class/interface declaration?
EDIT:
To better illustrate how I use table-of-contents this is an example from my hobby project. It's actually not listing functions, but code blocks inside a function.. but you can probably get the idea anyway..
/*
CONTENTS
Order_mouse_from_to_points
Lines_intersecting_with_upper_point
Lines_intersecting_with_both_points
Lines_not_intersecting
Lines_intersecting_bottom_points
Update_intersection_range_indices
Rough_method
Normal_method
First_selected_item
Last_selected_item
Other_selected_item
*/
void SelectionManager::FindSelection()
{
// Order_mouse_from_to_points
...
// Lines_intersecting_with_upper_point
...
// Lines_intersecting_with_both_points
...
// Lines_not_intersecting
...
// Lines_intersecting_bottom_points
...
// Update_intersection_range_indices
for(...)
{
// Rough_method
....
// Normal_method
if(...)
{
// First_selected_item
...
// Last_selected_item
...
// Other_selected_item
...
}
}
}
Notice that index-items don't have spaces. Because of this I can click on one them and press F4 to jump to the item-usage, and F2 to jump back (simple visual studio find-next/prevous-shortcuts).
EDIT:
Another alternative solution to this indexing is using collapsed c# regions. You can configure visual studio to show only region names and hide all the code. Of course keyboard support for that source code navigation is pretty cumbersome...
I know that alternative to that kind of listing would be to split up big files into smaller classes/files, so that their class declaration would be self-explanatory enough.
Correct.
but some complex tasks require a lot of code
Incorrect. While a "lot" of code be required, long runs of code (over 25 lines) are a really bad idea.
actually not listing functions, but code blocks inside a function
Worse. A function that needs a table of contents must be decomposed into smaller functions.
I'm not sure is it really worth it spending your time subdividing implementation into multiple of files?
It is absolutely mandatory that you split things into smaller files. The folks that maintain, adapt and reuse your code need all the help they can get.
is it ok to create an index-listing additionally to the class/interface declaration?
No.
If you have to resort to this kind of trick, it's too big.
Also, many languages have tools to generate API docs from the code. Java, Python, C, C++ have documentation tools. Even with Javadoc, epydoc or Doxygen you still have to design things so that they are broken into intellectually manageable pieces.
Make things simpler.
Use a tool to create an index.
If you create a big index you'll have to maintain it as you change your code. Most modern IDEs create list of class members anyway. it seems like a waste of time to create such index.
I would never ever do this sort of busy-work in my code. The most I would do manually is insert a few lines at the top of the file/class explaining what this module did and how it is intended to be used.
If a list of methods and their interfaces would be useful, I generate them automatically, through a tool such as Doxygen.
I've done things like this. Not whole tables of contents, but a similar principle -- just ad-hoc links between comments and the exact piece of code in question. Also to link pieces of code that make the same simplifying assumptions that I suspect may need fixing up later.
You can use Visual Studio's task list to get a listing of certain types of comment. The format of the comments can be configured in Tools|Options, Environment\Task List. This isn't something I ended up using myself but it looks like it might help with navigating the code if you use this system a lot.
If you can split your method like that, you should probably write more methods. After this is done, you can use an IDE to give you the static call stack from the initial method.
EDIT: You can use Eclipse's 'Show Call Hierarchy' feature while programming.