freeze

I have programmed in Python for a while, and just recently started using Ruby at work. The languages are very similar. However, I just came across a Ruby feature that I don't know how to replicate in Python. It's Ruby's freeze method. irb(main):001:0> a = [1,2,3] => [1, 2, 3] irb(main):002:0> a[1] = 'chicken' => "chicken" irb(main):003:0> a.freeze => [1, "chicken", 3] irb(main):004:0> a[1] = 'tuna' TypeError: can't modify frozen array from (irb):4:in `[]=' from (irb):4 Is there a way to imitate this in Python? EDIT: I realized that I made it seem like this was only for lists; in Ruby, freeze

I am building a WPF which has a button that execute a sql query in sql server (the query could take a long time to run). I want to use TPL for doing that. This code: var result = Task.Factory.StartNew(() => { command.ExecuteNonQuery(); }); gives this exception: ExecuteNonQuery requires an open and available Connection. The connection's current state is closed. I guess this is due to the fact that the query runs on a different thread and is not aware of the open connection. I have 2 questions: 1. How do I make the new thread know of this open connection? 2. After solving this ,How do I get the

We are a group of developers that are working on a realtime video processing app for android. Recently, a client reported a freeze in our app that happens only on Nexus 10 device. We bought the device ourselves and tested: device came with Android 4.2 preinstalled - there were no hangs nor freezes in our app after upgrading Android to 4.3, our app freezed on closing camera (see below for explanation) by upgrading to 4.4, our app kept freezing by flashing the latest Android 5.0 Nexus 10 factory image, our app still kept freezing (edit) - the problem has been solved by upgrading Nexus 10 to

I am running PyCharm 5 with JDK 8 on a Ubunto 15.10. The problem is that Ubuntu comes with 3 different Python versions and when I am prompted to select the correct interpreter version in PyCharm the whole computer simply freezes. Has anyone seen something similar? Ben Weiner To answer the question: yes, exactly the same behaviour but with OpenJDK 7 and OpenJDK 8. It freezes the UI; the computer can be accessed eg via SSH so you can kill the PyCharm Java process. I have not been able to investigate further (instead I went back to my old machine, OS X, on which PyCharm is bundled with a Java

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Is it possible to freeze first 3 columns of Primefaces' data table? I'm using Primefaces 3.1 回答1: Primefaces does not support fixed columns right now. Jquery fixed column was used to achieve the same. Reference : http://datatables.net/extras/fixedcolumns/ Example: var oTable2 = $(primfacesDataTableId).find('table').dataTable({ "sScrollX" : "100%", //Scroll "sScrollY" : "180", "bAutoWidth" : false, "bScrollCollapse" : true, "bPaginate" : false, "bSort" : false, "sInfo" : "", "sInfoEmpty" : "" }); var oFC = new FixedColumns(oTable2, {

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'd like to be able to freeze columns in JXTable just like in Excel spreadsheet and came across this project: xframe-swing's JXTable . Just wondering if there is a tutorial for this project. Note that this is not the same as JXTable in swingx project. Or perhaps there is another way? 回答1: Maybe the Fixed Column Table will do what you want. 文章来源: Freeze columns in JXTable

I have a strange situation. IT installed SSMS on my laptop and it runs well the first time, connected to my SQL servers remotely etc. But then it's frozen. I forced quit and then started SSMS again. Now it's totally frozen, no popup window at all to enter the server-connection text string. Then I did a force quit and got a pop up window ( see it here ). Microsoft SQL Server Management Studio has detected that an operation is blocking user input. This can be caused by an active modal dialog or a task that needs to block user interaction. Would you like to shut down anyway? Has anyone seen this

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Why can't I assign new properties to non-frozen object, which has frozen prototype: Working without Object.freeze: 'use strict' //This object will be prototype of next objects var defaults = { name: 'def name', sections: { 1: { secName: 'def sec name' } } }; //So we have an empty object with prototype set to our default object. var specificObject = Object.create(defaults); specificObject.sections = {}; console.log(specificObject.hasOwnProperty('sections')); //true specificObject.sections['1'] = Object.create(defaults.sections['1']); Above

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have installed Ftrace on android AVD and try to use Ftrace's functionality, but it does not work. Below is a list of what I did: Install ubuntu 10.04 LTS Install essential tools such as android sdk, toolchain, libs, etc Download goldfish kernel refer - http://blog.markloiseau.com/2012/07/how-to-compile-the-android-goldfish-emulator-kernel/ Modify kernel config file (turned on Tracer Options) Boot up goldfish with custom kernel which has compiled with tracer options Tried to use Ftrace functionality The kernel freezes This is the log: \#

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm wondering if there is a way to emulate the following line of code using Unity's RigidBody2D as opposed to using a normal RigidBody. rigidbody.constraints = RigidbodyConstraints.FreezePositionX; I wanting my players x position to freeze when it collides with something. Whilst I could use the above, it would require I rework all my 2D collisions to work with the 3D collision. A pain I'd rather avoid. 回答1: This is due to the Box2D engine use to do the simulation. It does not directly provide a constraint on the rigid body itself. It does