Search Results

Search found 44691 results on 1788 pages for 'first'.

facebook twitter digg google delicious technorati stumbleupon myspace wordpress linkedin gmail igoogle windows live tumblr viadeo yahoo buzz yahoo mail yahoo bookmarks favorites email print

Page 615/1788 | < Previous Page | 611 612 613 614 615 616 617 618 619 620 621 622  | Next Page >

  • For-loops in python

    - by Znarkus
    What is the best way of doing this in Python? for (v = n / 2 - 1; v >= 0; v--) I actually tried Google first, but as far as I can see the only solution would be to use while.

    Read the article

  • authentication on gui application written on perl

    - by oren
    Its not specific perl question I am building a perl gui/wxperl application that connect to DB . I want my application to be a password protected i.e first the user should enter the user and password and then use the appication . what is the best secure method to store the password could someone provide an idea what is the best method to how should i store the user and the password and how should i retrieve them for authentication ? if possible could someone provide some perl code how to do this ?

    Read the article

  • ActiveX: Could not load Driver

    - by Abs
    Hello all, I am having a look at this example which makes use of activeX - it does extacly what I need from the description but everytime I try to run the example, I get the error: Could not load Drivers. The ActiveX Control could not be started. I have tried this on IE8 on a windows Vista Machine. What is the problem, how can I get those drivers? This is my first time with ActiveX. Thanks all for any help

    Read the article

  • C program that prints out another C program in Japanese

    - by Bryan Bueter
    There was a C program written for a contest that was formatted in ASCII art as a Japanese character. When compiled and ran it printed out another program formatted in a different Japanese character, then another, then finally it printed out the first again. I was looking for the code to that and could not find it on the internet. I dont remember what contest nor what the name of the program was. Thanks.

    Read the article

  • MVVM Binding Password

    - by LnDCobra
    I am re-factoring my application to implement the MVVM design and i came across my first problem... Compiler won't let me bind to the Password property of the PasswordBox control. Anyone have any ideas / suggestions.

    Read the article

  • How to manipulate à DataGrid in Silverlight 3

    - by Polo
    Hi I having trouble to manipulate CeLLs content in Silverlight Grids... I can get my DataGrid, the Columns but not the Cell value. How can I get the first Cell wich is an Image in a Button for every row?? I can only achieve my goal by events like the button_click but not in regulare code behind. thanks for help

    Read the article

  • Searches (and general querying) with HBase and/or Cassandra (best practices?)

    - by alexeypro
    I have User model object with quite few fields (properties, if you wish) in it. Say "firstname", "lastname", "city" and "year-of-birth". Each user also gets "unique id". I want to be able to search by them. How do I do that properly? How to do that at all? My understanding (will work for pretty much any key-value storage -- first goes key, then value) u:123456789 = serialized_json_object ("u" as a simple prefix for user's keys, 123456789 is "unique id"). Now, thinking that I want to be able to search by firstname and lastname, I can save in: f:Steve = u:384734807,u:2398248764,u:23276263 f:Alex = u:12324355,u:121324334 so key is "f" - which is prefix for firstnames, and "Steve" is actual firstname. For "u:Steve" we save as value all user id's who are "Steve's". That makes every search very-very easy. Querying by few fields (properties) -- say by firstname (i.e. "Steve") and lastname (i.e. "l:Anything") is still easy - first get list of user ids from "f:Steve", then list from "l:Anything", find crossing user ids, an here you go. Problems (and there are quite a few): Saving, updating, deleting user is a pain. It has to be atomic and consistent operation. Also, if we have size of value limited to some value - then we are in (potential) trouble. And really not of an answer here. Only zipping the list of user ids? Not too cool, though. What id we want to add new field to search by. Eventually. Say by "city". We certainly can do the same way "c:Los Angeles" = ..., "c:Chicago" = ..., but if we didn't foresee all those "search choices" from the very beginning, then we will have to be able to create some night job or something to go by all existing User records and update those "c:CITY" for them... Quite a big job! Problems with locking. User "u:123" updates his name "Alex", and user "u:456" updates his name "Alex". They both have to update "f:Alex" with their id's. That means either we get into overwriting problem, or one update will wait for another (and imaging if there are many of them?!). What's the best way of doing that? Keeping in mind that I want to search by many fields? P.S. Please, the question is about HBase/Cassandra/NoSQL/Key-Value storages. Please please - no advices to use MySQL and "read about" SELECTs; and worry about scaling problems "later". There is a reason why I asked MY question exactly the way I did. :-)

    Read the article

  • Understanding CLR 2.0 Memory Model

    - by Eloff
    Joe Duffy, gives 6 rules that describe the CLR 2.0+ memory model (it's actual implementation, not any ECMA standard) I'm writing down my attempt at figuring this out, mostly as a way of rubber ducking, but if I make a mistake in my logic, at least someone here will be able to catch it before it causes me grief. Rule 1: Data dependence among loads and stores is never violated. Rule 2: All stores have release semantics, i.e. no load or store may move after one. Rule 3: All volatile loads are acquire, i.e. no load or store may move before one. Rule 4: No loads and stores may ever cross a full-barrier (e.g. Thread.MemoryBarrier, lock acquire, Interlocked.Exchange, Interlocked.CompareExchange, etc.). Rule 5: Loads and stores to the heap may never be introduced. Rule 6: Loads and stores may only be deleted when coalescing adjacent loads and stores from/to the same location. I'm attempting to understand these rules. x = y y = 0 // Cannot move before the previous line according to Rule 1. x = y z = 0 // equates to this sequence of loads and stores before possible re-ordering load y store x load 0 store z Looking at this, it appears that the load 0 can be moved up to before load y, but the stores may not be re-ordered at all. Therefore, if a thread sees z == 0, then it also will see x == y. If y was volatile, then load 0 could not move before load y, otherwise it may. Volatile stores don't seem to have any special properties, no stores can be re-ordered with respect to each other (which is a very strong guarantee!) Full barriers are like a line in the sand which loads and stores can not be moved over. No idea what rule 5 means. I guess rule 6 means if you do: x = y x = z Then it is possible for the CLR to delete both the load to y and the first store to x. x = y z = y // equates to this sequence of loads and stores before possible re-ordering load y store x load y store z // could be re-ordered like this load y load y store x store z // rule 6 applied means this is possible? load y store x // but don't pop y from stack (or first duplicate item on top of stack) store z What if y was volatile? I don't see anything in the rules that prohibits the above optimization from being carried out. This does not violate double-checked locking, because the lock() between the two identical conditions prevents the loads from being moved into adjacent positions, and according to rule 6, that's the only time they can be eliminated. So I think I understand all but rule 5, here. Anyone want to enlighten me (or correct me or add something to any of the above?)

    Read the article

  • httpUnit class not found

    - by josh
    I am trying httpUnit for the first time and just trying to get a response back from google.com. However, I keep getting the following error: com.meterware.httpunit.dom.HTMLDocumentImpl not found Though, I have placed httpUnit.jar in the libraries folder of my NetBeans project and can actually see that class file is there. Any experiences with this?

    Read the article

  • jquery tools - tabs mouseover - 2nd.

    - by New_user
    I use this tool to show text when moving the mouse over the pix: http://flowplayer.org/tools/demos/tabs/mouseover.htm Does anybody have an idea how to force that the "context" of the second pic is shown when opening the demo-page instead of the context of the first pic (default)? Thanks for any help!

    Read the article

  • Does a transaction stop all race condition problems in MySQL?

    - by nickf
    Consider this situation: Begin transaction Insert 20 records into a table with an auto_increment key Get the first insert id (let's say it's 153) Update all records in that table where id >= 153 Commit Is step 4 safe? That is, if another request comes in almost precisely at the same time, and inserts another 20 records after step 2 above, but before step 4, will there be a race condition?

    Read the article

  • How can I extract the original image stream from a System.Drawing.Bitmap object?

    - by skolima
    I am embedding images into my assembly using .resx files. Upon runtime, I need to save the images into standalone files, restoring the original content. How can I extract the original file stream from an System.Drawing.Bitmap instance? I know I can create a stream using Bitmap.Save(), but this transcodes (and in effect - inflates) the images, even when saving a PNG back as PNG. Or perhaps my mistake is reading them from Resource as Bitmap in the first place?

    Read the article

  • Showing a Captcha popup after failed login.

    - by thinker07
    I have created two asp.net pages, if x times the login fails, I want to call the captcha page (second page) in a popup window. How do I automatically call the second page as a popup window in the first page without using a hyperlink button? Are there any tutorials?

    Read the article

  • get a button font api

    - by user545142
    hi first sorry for my English i try to get a word under mouse now my problem how to get the font of button i try to use IntPtr dc= GetDC(button1.Handle); IntPtr last_font = SelectObject(dc, Font.ToHfont()); Font fon = Font.FromHdc(dc); but it gave me the font of the form and some time gave me error Only TrueType fonts are supported. This is not a TrueType font any body help me

    Read the article

  • Where to run initialization code in Asp.net MVC

    - by Nosh
    I need to run some code that will fetch some configuration values from the web.config during first run of an asp.net mvc application. These values will not change frequently but that is not my main concern. One way that I can think of is calling the method in Application_Start() method in the global.asax.cs file, but I am hoping someone has a better idea.

    Read the article

  • Sqlserver 2005 Replication issue

    - by Francesco
    Hi, I have a peer to peer Merge Replication from two Sqlserver 2005. The first Sqlserver is both the publisher and distribuitor. All works fine but if the VPN goes down for a couple of hours the replication goes down too and I need to manually restart the sqlserver agent. In the Sqlserver Agent properties I have set the two option about the agent failover but nothing. How I can set an automatic restart of sqlserver agent when the VPN goes down? Thanks

    Read the article

  • How do I configure logging for a grails plugin ?

    - by Philippe
    Hello, I'm creating my first grails plugin and I don't know where the logging should be configured. In a normal grails app, there is a conf/Config.groovy file for that, but for a plugin there is none. Is there another way to achieve this ? I would like to see debug messages when I launch my plugin unit and integration tests... Thanks in advance. Philippe

    Read the article

  • I want to create adjacency matrix using python

    - by A A
    I have very large data set it is almost 450000 lines and two rows, i want to compute adjacency matrix using python, because previously i have tried to do it in matlab, and it shows memory error because of large data values. my data values also start from 100 and goes upto 450000, Anyone can help me in this issue, as i am new to python. I have to first import the file into python using excel sheet or notepad and then compute the adjacency matrix

    Read the article

  • Caching in mmap

    - by myahya
    I am using mmap call to read from a very big file using simple pointer arithmetic in C++. The problem is that when I read small chunks of data (in the order of KBs) multiple times, each read take the same amount of time as the previous one. How can I know if the disk is being accessed to fulfill my request or whether the request is being fulfilled from main memory (page cache) in calls after the first one.

    Read the article

facebook twitter digg google delicious technorati stumbleupon myspace wordpress linkedin gmail igoogle windows live tumblr viadeo yahoo buzz yahoo mail yahoo bookmarks favorites email print

< Previous Page | 611 612 613 614 615 616 617 618 619 620 621 622  | Next Page >