add | 易学教程

Add saturate 32-bit signed ints intrinsics?

阅读更多关于 Add saturate 32-bit signed ints intrinsics?

问题 Can someone recommend a fast way to add saturate 32-bit signed integers using Intel intrinsics (AVX, SSE4 ...) ? I looked at the intrinsics guide and found _mm256_adds_epi16 but this seems to only add 16-bit ints. I don't see anything similar for 32 bits. The other calls seem to wrap around. 回答1: A signed overflow will happen if (and only if): the signs of both inputs are the same, and the sign of the sum (when added with wrap-around) is different from the input Using C-Operators: overflow =

How2: Add a JPanel to a Document then export to PDF

阅读更多关于 How2: Add a JPanel to a Document then export to PDF

问题 first post ever in any forum with regard to programming... i usually just search until i find the answer... but this time im really stuck... here's the problem... i have a JPanel, and recently discovered that itext provides you with a way to export Java GUI to PDF... i cant seem to understand itext's language nor how to add a simple JPanel to a document then export that document to a PDF... this is all i have at the moment... import java.io.FileOutputStream; import com.itextpdf.text.*; import

install mobileprovision file - Xcode 6

阅读更多关于 install mobileprovision file - Xcode 6

I know this is simple, but I've read through all the questions and there doesn't seem to be a simple answer to this. I've created an appID. I've created a mobileprovision file, downloaded it and double clicked it and that all seems fine. (I have xcode 6) I wan't to select my distribution profile in Code Signing Identity in the build. But all my certificates are grayed out: (No cretificate found)[check profile]. - check profile is the name of my mobileprovision file. How do I get this profile though to show up in XCode? and where would it show up? Full description is here: Set the project level

Jquery: Add rel attribute to <a> tags within all <li> tags of a certain class

阅读更多关于 Jquery: Add rel attribute to tags within all tags of a certain class

问题 I'm trying to add a rel="lightframe" attribute to all my 'edit' links within my admin_links_node_edit class. <li class="admin_links_node_edit"> <a href="[link]" title="Edit">Edit</a> </li> My code so far looks like this: $('.admin_links_node_edit a').each(function() { $(this).attr('rel','lightframe'); }); 回答1: You don't need to use each(). jQuery's selectors will do it for you :) $('.admin_links_node_edit a').attr('rel', 'lightframe') The above code will do the trick. 回答2: If admin_links_node

python, dynamically implement a class onthefly

阅读更多关于 python, dynamically implement a class onthefly

问题 Assuming i have a class that implements several methods. We want a user to chose to which methods to run among the exisiting methods or he can decide to add any method on_the_fly. from example class RemoveNoise(): pass then methods are added as wanted RemoveNoise.raw = Raw() RemoveNoise.bais = Bias() etc he can even write a new one def new(): pass and also add the new() method RemoveNoise.new=new run(RemoveNoise) run() is a function that evaluates such a class. I want to save the class_with

How to setup python path for 2.7 on mac?

阅读更多关于 How to setup python path for 2.7 on mac?

问题 I am aware that, this question has been asked and answered many times. But, still i couldn't get rid of this. I found out the following info on my mac. cd /Library/Frameworks/Python.framework/Versions/ Current -> 2.7 3.6 whereispython /usr/bin/python which python /usr/bin/python which -a python /usr/bin/python /usr/bin/python python Python 2.7.10 (default) [GCC 4.2.1 Compatible Apple LLVM 7.0.0 (clang-700.0.59.5)] on darwin Type "help", "copyright", "credits" or "license" for more information

How to implement a command that allows user to add and delete tabs in the application?

阅读更多关于 How to implement a command that allows user to add and delete tabs in the application?

I am trying to make an app with tabs at the top that link a website too each one, such as a computer that uses tabs in safari or firefox. What I am trying to do is implement an add and delete class that will allow the user to delete a tab if wanted and add another that will link to a different website. Any help would be greatly appreciated. Here is the main java file. public class UniversityofColorado extends TabActivity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); TabHost host=getTabHost(); host.addTab(host.newTabSpec("one") .setIndicator(

JSF datatable: adding and removing rows clear rows values

阅读更多关于 JSF datatable: adding and removing rows clear rows values

问题 I have a h:datatable showing a list of rows, and the fields of each row are input fields. I render an "Add Row" button before the table, and a "Remove Row" button on each row of the table. The baking bean is viewScoped, and the buttons add/remove elements from the java list in the backing bean, and then return to the same view. I set the immediate attribute to "true" in the buttons in order to not validate the input fields when I add or remove a row. Everything works ok but one thing: the

Basic addition in Tensorflow?

阅读更多关于 Basic addition in Tensorflow?

问题 I want to make a program where I enter in a set of x1 x2 and outputs a y. All of the tensor flow tutorials I can find start with image recognition. Can someone help me by providing me either code or a tutorial on how to do this in python? thanks in advance. edit- the x1 x2 coordinates I was planning to use would be like 1, 1 and the y would be 2 or 4, 6 and the y would be 10. I want to provide the program with data to learn from. I have tried to learn from the tensorflow website but it seemed

How to make SVN ADD ignore binaries

阅读更多关于 How to make SVN ADD ignore binaries

问题 Binaries (under Linux) don't have an extension so I cannot exclude them using patterns. Thus when I use SVN add to add a directory I will get something like $ svn add recursion_vector/ A recursion_vector A recursion_vector/rec_vec.cxx A recursion_vector/rec_vec.h A (bin) recursion_vector/rec_vec Here rec_vec is the executable I would like to exclude. SVN obviously recognizes it as binary. Now can I tell Subversion to ignore all binary files? 回答1: This is a bit verbose because it uses find: