convert

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): 由 翻译 强力驱动 问题: Lets say I have a normal page table: Page Table (Page size = 4k) Page #: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Page Frame #: 3 x 1 x 0 x 2 x 5 x 7 4 6 x x x How can I convert an arbitrary logical address like 51996 into a physical memory address? If I take log base 2 (4096), I get 12. I think this is how many bits I'm suppose to use for the offset of my address. I'm just not sure. 51996 / 4096 = 12.69. So does this mean it lay on page#12 with a certain offset? How do I then turn that into the physical address of "51996"? 回答1: To

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 looking for a batch script to convert swf to mp4, lossless. I tried using both ffmpeg and handbrake, but apparently swf is compressed and I can't convert them this way. ffmpeg -i input -c:v libx264 -preset ultrafast -qp 0 output.mkv HandBrakeCLI -i source -o destination I know I acn use a tool like xilisoft, but I've more than 3000 videos and would need to run this automatically. Is there a script/ algorithm that can help me automate this process? 回答1: Get gnash: git clone git://git.sv.gnu.org/gnash.git You'll need a bunch of

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 get external .pem files that need to be converted to .p12 files - I add a username and password in the process. (I need to do this to utilize a third party API.) Using openssl , the command is... openssl pkcs12 -export -in xxxx.pem -inkey xxxx.pem -out xxx.p12 -passout pas:newpassword -name "newname" I can run this from a terminal session and it works perfectly. However, I will need to do this often and have written a Java class that handles this and more (my application is mostly .jsp with Tomcat and Apache). When I try run the same

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 am wiring a gstreamer application with Python. And I get a LinkError with following code: import pygst pygst.require('0.10') import gst import pygtk pygtk.require('2.0') import gtk # this is very important, without this, callbacks from gstreamer thread # will messed our program up gtk.gdk.threads_init() def main(): pipeline = gst.Pipeline('pipleline') filesrc = gst.element_factory_make("filesrc", "filesrc") filesrc.set_property('location', 'C:/a.mp3') decode = gst.element_factory_make("decodebin", "decode") convert = gst.element_factory

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 a float value that needs to be put into a std::string . How do I convert from float to string? float val = 2.5; std::string my_val = val; // error here 回答1: Unless you're worried about performance, use string streams : std::ostringstream ss; ss If you're okay with Boost, lexical_cast is a convenient alternative: std::string s = boost::lexical_cast (myFloat); Efficient alternatives are e.g. FastFormat or simply the C-style functions. 回答2: As of C++11, the standard C++ library provides the function std::to_string(arg) with various

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: My code is as below: public void ReadListItem() { List<uint> lst = new List<uint>() { 1, 2, 3, 4, 5 }; string str = string.Empty; foreach (var item in lst) str = str + item + ","; str = str.Remove(str.Length - 1); Console.WriteLine(str); } Output: 1,2,3,4,5 What is the most simple way to convert the List<uint> into a comma-separated string? 回答1: Enjoy! Console.WriteLine(String.Join(",", new List<uint> { 1, 2, 3, 4, 5 })); String.Join will take a list as a the second parameter and join all of the elements using the string passed as the first

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: How does one convert a Z-score from the Z-distribution (standard normal distribution, Gaussian distribution) to a p -value ? I have yet to find the magical function in Scipy's stats module to do this, but one must be there. 回答1: I like the survival function (upper tail probability) of the normal distribution a bit better, because the function name is more informative: p_values = scipy.stats.norm.sf(abs(z_scores)) #one-sided p_values = scipy.stats.norm.sf(abs(z_scores))*2 #twosided normal distribution "norm" is one of around 90 distributions

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: Let's say I have this number i = -6884376 . How do I refer to it as to an unsigned variable? Something like (unsigned long)i in C. 回答1: Assuming : You have 2's-complement representations in mind; and, By (unsigned long) you mean unsigned 32-bit integer, then you just need to add 2**32 (or 1 to the negative value. For example, apply this to -1: >>> -1 -1 >>> _ + 2**32 4294967295L >>> bin(_) '0b11111111111111111111111111111111' Assumption #1 means you want -1 to be viewed as a solid string of 1 bits, and assumption #2 means you want 32 of them

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: What I'd like to avoid: ManagementClass m = new ManagementClass("Win32_LogicalDisk"); ManagementObjectCollection managementObjects = m.GetInstances(); List<ManagementObject> managementList = new List<ManagementObject>(); foreach(ManagementObject m in managementObjects){ managementList.Add(m); } Isn't there a way to get that collection into a List that looks something like: List<ManagementObject> managementList = new List<ManagementObjec>(collection_array); 回答1: What version of the framework? With 3.5 you could presumably use: List

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): 由 翻译 强力驱动 问题: I am using Entity Framework in my C# based code. I am running into an unexpected weirdness and am looking for suggestions. Case 1, 2, 3, 4... Projects: RivWorks.dll RivWorks.Service.dll RivWorks.Alpha.dll Samples (all of these work): RivWorks.Alpha.dll: public static bool EndNegotitation ( long ProductID ) { var product = ( from a in _dbFeed . AutoWithImage where a . AutoID == ProductID select a ). FirstOrDefault (); ... } RivWorks.Service.dll public static RivWorks . Model . NegotiationAutos . AutoWithImage GetProductById ( long