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  • Windows 8 Native App in Asp.net MVC?

    - by xiao
    I was not sure if this should be here or stackoverflow. I am looking at developing some windows 8 apps. I come from a web background and was really intrigued that you make them with html and javascript. I started to think though why can't you use asp.net mvc to build a windows 8 application. My question is can you somehow use asp.net mvc to build a native windows 8 application or are you suck with javascript and html?

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  • How to broadcast a command on Windows

    - by Xiao Jia
    I am going to frequently deploy different versions of a program on a cluster of Windows machines (mostly Windows XP), so I am willing to use a command-line broadcasting tool (either built-in or 3rd-party) to (1) download a file from some URL, and (2) execute the same command, on all the machines. I googled for a very long time but got nothing related to my goal. (Only pages about broadcasting a message, broadcasting ping, or programmatically broadcast via TCP/IP, etc.) Are there any tool for this purpose? Or is it possible to do it pragmatically (without installing extra client programs on those machines)?

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  • Monitor doesn't turn on the first try, is power supply failure imminent?

    - by xiao
    I been noticing for the last couple days that when I turn on my computer and then my monitor(22inch lcd) that my monitor does not turn on. I push the "on" button and the blue light comes on but the screen is blank. I usually have to then restart my computer and then my monitor will show in the upper left hand corner a dialog bog that says "analog" and it is flickering. Then everything goes to normal. Thinking it is the power supply but at the same time the tower is a year old(it came with a power supply). So when I take that into consideration I am not sure.

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  • Routing only some local IPs through VPN on dd-wrt

    - by bo-inge-ostberg
    Much similar to this entry: http://serverfault.com/questions/94283/using-dd-wrt-to-connect-to-vpn-and-forward-all-traffic-of-certain-devices-through , I have set up my router with dd-wrt + OpenVPN to connect to a VPN. This works fine, and all traffic from behind the router goes through the VPN. How do I route(?) traffic in the router so that only certain IPs from the LAN will go through the VPN, while the others take the "normal" route? Is it also possible to allow traffic from certain local IPs to go ONLY through the VPN, making it impossible for them to use the regular internet connection if the VPN is down? I know this question was answered in the post I linked to, but that just doesn't seem to work for me. The routing table and rules change, but traffic still just goes through the VPN.

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  • OpenLDAP User Home Directory

    - by Bo Zhou
    I'm trying to install OpenLDAP on CentOS 6.2 . I manually added the LDAP accounts on server, and I had been successful to login the server by the LDAP username/password, but I found that the Home on Desktop of GNOME still points to a local user's Home folder, at the same time, the LDAP user's Home folder was created under /home as expected. So my question is how should I map the Home folder of desktop to the path set on LDAP server ? Thanks ! And how should I use ldapadd command, it always tells me the SASL error, but I really do not know why. Thanks !

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  • Errors in Homebrew on OS X Lion

    - by Bo Tian
    I just ran the Homebrew script as described in the installation page. I then ran brew doctor in Terminal, and it returned several errors. I'm not sure how to fix those errors, please help. brew doctor Error: Some directories in /usr/local/share/man aren't writable. This can happen if you "sudo make install" software that isn't managed by Homebrew. If a brew tries to add locale information to one of these directories, then the install will fail during the link step. You should probably `chown` them: /usr/local/share/man/de /usr/local/share/man/de/man1 Error: You have Xcode 4.2, which is outdated. Please install Xcode 4.3. Error: Unbrewed dylibs were found in /usr/local/lib. If you didn't put them there on purpose they could cause problems when building Homebrew formulae, and may need to be deleted. Unexpected dylibs: /usr/local/lib/libcdt.5.dylib /usr/local/lib/libcgraph.6.dylib /usr/local/lib/libgraph.5.dylib /usr/local/lib/libgvc.6.dylib /usr/local/lib/libgvpr.2.dylib /usr/local/lib/libpathplan.4.dylib /usr/local/lib/libxdot.4.dylib Error: Unbrewed .pc files were found in /usr/local/lib/pkgconfig. If you didn't put them there on purpose they could cause problems when building Homebrew formulae, and may need to be deleted. Unexpected .pc files: /usr/local/lib/pkgconfig/libcdt.pc /usr/local/lib/pkgconfig/libcgraph.pc /usr/local/lib/pkgconfig/libgraph.pc /usr/local/lib/pkgconfig/libgvc.pc /usr/local/lib/pkgconfig/libgvpr.pc /usr/local/lib/pkgconfig/libpathplan.pc /usr/local/lib/pkgconfig/libxdot.pc Error: /usr/bin occurs before /usr/local/bin This means that system-provided programs will be used instead of those provided by Homebrew. The following tools exist at both paths: 2to3 Consider amending your PATH so that /usr/local/bin is ahead of /usr/bin in your PATH.

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  • Disadvantages of not having a swap partition

    - by Bo Tian
    I recently installed Ubuntu 10.04 on my laptop. Due to space constraint of the SSD, I did not set a swap partition for the OS, and I have 1.5GB of RAM. There's a warning during installation, but I think it's not a big deal since everything went smoothly. For the long term, would there be any drawbacks of not having a swap partition?

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  • Business Objects: Refresh Data problem with .NET API

    - by jlrolin
    I'm currently using the BO API for .NET to connect to our reports database. In .NET, I'm getting the following error: Your security profile does not include permission to refresh Web Intelligence documents. (WIS 30253) Interestingly enough, I can log into BO, and I can refresh the data and grab prompts as I'm logged in. From .NET, with the same username and password, I can't seem to do so. Anybody have any thoughts on this?

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  • How do I change a VMWare 1.x server's guest boot order?

    - by bo gusman
    I have 4 VMs on a Linux host, call them A, B, C, D running on Z. I really don't care when A and B come up, but I would like to make sure that D comes up before C. I believe that in VMWare 2.x it's possible to change the boot order. Is this possible in 1.x as well? Is this done in /etc/vmware/vm-list? I see that there are a number of VMs listed there, including some that have long since been deleted.

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  • Exporting members of all DLs in an OU

    - by Bo Shubinsky
    I'm trying to export all the members of all the DLs within an OU (either to a single file that's categorized or individual files). I tried to use: csvde -f "C:\Documents and Settings\root\Desktop\AD Export\DL Export\DL.txt" -r "OU=DLs,OU=Personnel,DC=csi,DC=org" -l "cn,mail" but that only works for individual DLs and there are a lot to input each time. Any help on getting this done in the most efficient pattern would be helpful.

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  • Thunderbird "Folders" and "Inbox" font size

    - by bo gusman
    Graphical programs are such a pain sometimes. I am of an age where 1024x768 is the highest resolution that I can see. I had set my Windows 7 system fonts to be 125% - that helps a lot - but it screws up the tool bars on many other programs so I've reverted to 100% and it's now too hard to read in many cases. Most browsers will let you easily scale text font size as will the "message" window of Thunderbird (aside from setting the default font size for reading messages to 24 point, CTRL + + works wonders). However, I cannot seem to find a way to set the font size for the other panes - the Folders pane and the inbox pane. Is there some undocumented way to do that?

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  • Problem about python import with error

    - by xiao
    Hello, I have write a small python module with one class and two functions. The skeleton of the module is as following: #file name: test_module.py class TestClass: @classmethod def method1(cls, param1): #to do something pass def __init__(self, param1): #to do something ... def fun1(*params): #to do something ... def fun2(*params): #to do something ... Another py file is a small script which imports function and class from the module, as following: import sys from test_module import TestClass, fun1, fun2 def main(sys_argv): li = range(5) inst1 = TestClass(li) fun1(inst1) fun2(inst1) return if __name__ == "__main__": main(sys.argv) But when I execute the script, it is broken with following message: ./script.py: line 4: syntax error near unexpected token `(' ./script.py: line 4: `def main(sys_argv):' I am not sure what the problem is. Is it a problem with import? But when I try to import the module in ipython, everything is just ok.

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  • how to implement a really efficient bitvector sorting in python

    - by xiao
    Hello guys! Actually this is an interesting topic from programming pearls, sorting 10 digits telephone numbers in a limited memory with an efficient algorithm. You can find the whole story here What I am interested in is just how fast the implementation could be in python. I have done a naive implementation with the module bitvector. The code is as following: from BitVector import BitVector import timeit import random import time import sys def sort(input_li): return sorted(input_li) def vec_sort(input_li): bv = BitVector( size = len(input_li) ) for i in input_li: bv[i] = 1 res_li = [] for i in range(len(bv)): if bv[i]: res_li.append(i) return res_li if __name__ == "__main__": test_data = range(int(sys.argv[1])) print 'test_data size is:', sys.argv[1] random.shuffle(test_data) start = time.time() sort(test_data) elapsed = (time.time() - start) print "sort function takes " + str(elapsed) start = time.time() vec_sort(test_data) elapsed = (time.time() - start) print "sort function takes " + str(elapsed) start = time.time() vec_sort(test_data) elapsed = (time.time() - start) print "vec_sort function takes " + str(elapsed) I have tested from array size 100 to 10,000,000 in my macbook(2GHz Intel Core 2 Duo 2GB SDRAM), the result is as following: test_data size is: 1000 sort function takes 0.000274896621704 vec_sort function takes 0.00383687019348 test_data size is: 10000 sort function takes 0.00380706787109 vec_sort function takes 0.0371489524841 test_data size is: 100000 sort function takes 0.0520560741425 vec_sort function takes 0.374383926392 test_data size is: 1000000 sort function takes 0.867373943329 vec_sort function takes 3.80475401878 test_data size is: 10000000 sort function takes 12.9204008579 vec_sort function takes 38.8053860664 What disappoints me is that even when the test_data size is 100,000,000, the sort function is still faster than vec_sort. Is there any way to accelerate the vec_sort function?

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  • The difference between triangulation and mesh

    - by xiao
    I have done some computer graphical programming recently, and I have no experience before. I used the library call CGAL(computer geometry algorithm library). Also, I noticed that there is class for triangulation and also class for mesh. Is mesh just a kind of triangle net? Do they have any differences? Thanks!

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  • Performance Overhead of Perf Event Subsystem in Linux Kernel

    - by Bo Xiao
    Performance counters for Linux are a new kernel-based subsystem that provide a framework for all things performance analysis. It covers hardware level (CPU/PMU, Performance Monitoring Unit) features and software features (software counters, tracepoints) as well. Since 2.6.33, the kernel provide 'perf_event_create_kernel_counter' kernel api for developers to create kernel counter to collect system runtime information. What I concern most is the performance impact on overall system when tracepoint/ftrace is enabled. There are no docs I can find about them. I was once told that ftrace was implemented by dynamically patching code, will it slow the system dramatically?

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  • scrollLeft works but scrollTop doesn't work

    - by Xiao Jia
    I have the following HTML with CSS .container { overflow: scroll; } etc. <body> <div class="container"> <div id="markers"></div> <img id="map" src="/img/map.jpg"/> </div> </body> map.jpg is very large and I want to scroll to a fixed position like this: $(function(){ console.log($('.container').scrollTop()); $('.container').scrollTop(1000); console.log($('.container').scrollTop()); console.log($('.container').scrollLeft()); $('.container').scrollLeft(1750); console.log($('.container').scrollLeft()); }); scrollLeft works fine but scrollTop doesn't. Below is the console output. 0 0 0 1750 I've been searching for half an hour but still don't know how to fix it... UPDATE: CSS about .container #markers and #map .container { overflow: scroll; width: 100%; max-width: 100%; height: 100%; max-height: 100%; margin: 0; padding: 0; } #map { width: 5000px; max-width: 5000px; height: 2907px; max-height: 2907px; cursor: crosshair; } #markers { position: relative; top: 0; left: 0; width: 0; height: 0; margin: 0; padding: 0; }

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  • What is the difference between remote procedure call and web service

    - by xiao
    Is there any clear definition about RPC and Web Service? A quick wikipedia search shows: RPC: Remote procedure call (RPC) is an Inter-process communication technology that allows a computer program to cause a subroutine or procedure to execute in another address space (commonly on another computer on a shared network) without the programmer explicitly coding the details for this remote interaction. Web Service: Web services are typically application programming interfaces (API) or web APIs that are accessed via Hypertext Transfer Protocol and executed on a remote system hosting the requested services. Web services tend to fall into one of two camps: Big Web Services[1] and RESTful Web Services. I am not quite clear what the real difference between the two things. It seems that one thing could belongs to RPC and is kind of web service at the same time. Is Web Service a higher level representation of RPC?

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