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• Intime and OutTime for the Modified date

  - by Jash

  Question is already posted on June 4, but still am not get the Proper answer Again Table Structure: T_Person – Table 1 CARDNO 168 471 488 247 519 518 331 240 518 386 441 331 T_Cardevent – Table 2 CARDEVENTDATE CARDEVENTTIME 20090225 163932 20090225 164630 20090225 165027 20090225 165137 20090225 165147 20090225 165715 20090225 165749 20090303 162059 20090303 162723 20090303 155029 20090303 155707 20090303 162824 Query SELECT CARDNO, CARDEVENTDATE, (1000000 * CAST (CARDEVENTDATE AS BIGINT) + CAST (CARDEVENTTIME AS BIGINT) - 30001) / 1000000 AS CardEvenDateAdjusted, CARDEVENTTIME FROM T_CARDEVENT WHERE (CARDEVENTDATE > 20090601) GROUP BY CARDNO, CARDEVENTDATE, CARDEVENTTIME, (1000000 * CAST(CARDEVENTDATE AS BIGINT) + CAST(CARDEVENTTIME AS BIGINT) - 30001) / 1000000 ORDER BY CARDNO, CARDEVENDATEADJUSTED From this above query date is displaying correctly according to that time 03:00:01 to 03:00:00 How can I get min (time) and Max (time) for the adjusted date? I need the sql query for the above condition. Help me? Urgent Please

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• Storing cvs data for further manipulation using Ruby

  - by ischnura

  I am dealing with a csv file that has some customer information (email, name, address, amount, [shopping_list: item 1, item 2]). I would like work with the data and produce some labels for printing... as well as to gather some extra information (total amounts, total items 1...) My main concern is to find the appropriate structure to store the data in ruby for future manipulation. For now I have thought about the following possibilities: multidimensional arrays: pretty simple to build, but pretty hard to access the data in a beautiful ruby way. hashes: having the email as key, and storing the information in different hashes (one hash for name, another hash for address, another hash for shopping list...) (getting the cvs data in to a Database and working with the data from ruby??) I would really appreciate your advice and guidance!!

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• Design Stock Server Application in C++

  - by Avinash

  [Queston asked in ML Interview] Design an server/application which handle multiple incoming stock information ( stock symbol and values ) Server need to store the information in some cache ( need to design the data structure ), There are multiple client connected to server using tcp/ip socket. They will subscribe to particular request say stock symbol XYZ , and may be for more then one. As and when there is change the stock symbol server should broadcast the information to subscribed client. If tcp/ip write failed, server should handle the unregistration of the client. What various data structures will be used and how threading model will be ?

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• Question on ExtAudioFileRead and AudioBuffer for iPhone SDK

  - by backspacer

  I'm developing an iPhone app that uses the Extended Audio File Services. I try to use ExtAudioFileRead to read the audio file, and store the data in an AudioBufferList structure. AudioBufferList is defined as: struct AudioBufferList { UInt32 mNumberBuffers; AudioBuffer mBuffers[1]; }; typedef struct AudioBufferList AudioBufferList; and AudioBuffer is defined as struct AudioBuffer { UInt32 mNumberChannels; UInt32 mDataByteSize; void* mData; }; typedef struct AudioBuffer AudioBuffer; I want to manipulate the mData but I wonder what does the void* mean. Why is it void*? How can I decide what data type is actually stored in mData?

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• Indexing datetime in MySQL

  - by User1

  What is the best way to index a datetime in MySQL? Which method is faster: Store the datetime as a double (via unix timestamp) Store the datetime as a datetime The application generating the timestamp data can output either format. Unfortunately, datetime will be a key for this particular data structure so speed will matter. Also, is it possible to make an index on an expression? For example, index on UNIX_TIMESTAMP(mydate) where mydate is a field in a table and UNIX_TIMESTAMP is a mysql function. I know that Postgres can do it. I'm thinking there must be a way in mysql as well.

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• How can I generate a unique ID using a hash in Perl?

  - by sganesh

  I doing message transfer program between multiple clients and server. I want to generate unique message id for every messages. that should be generated by server and return to client. For message transfer I am using hash data structure, Ex: { api => POST, username => sganesh, pass => "pass", message => "hai", time => "current_time", } I want to generate unique id using this hash. I have tried some of the ways, MD5 and freeze but this give unreadable id. I want some meaningful or readable unique id. I have thought we can use micro seconds to differentiate the id but here the problem is multiple clients. In any situation my id should be unique. Can anyone help me out of this problem? Thanks in Advance.

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• Architecture of a single-page JavaScript web application?

  - by fig-gnuton

  How should a complex single-page JS web application be structured on the client-side? Specifically I'm curious about how to cleanly structure the application in terms of its model objects, UI components, any controllers, and objects handling server persistence. MVC seemed like a fit at first. But with UI components nested at various depths (each with their own way of acting on/reacting to model data, and each generating events which they themselves may or may not handle directly), it doesn't seem like MVC can be cleanly applied. (But please correct me if that's not the case.) -- (This question resulted in two suggestions of using ajax, which is obviously needed for anything other than the most trivial one-page app.)

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• Cannot access data in a xml string

  - by Jess McKenzie

  I am trying to create an array that I can include the perent category Name and the child category Name. I can so far access the below object fine using $xml->Subcategories; but if I try my code below I get an empty array why? PHP: foreach ($catDetailsXml->Category as $value) { $categoryDetails[] = array('CategoryNumber' => $value->Number); } Structure: object(SimpleXMLElement)#13 (1) { ["Category"]=> array(5) { [0]=> object(SimpleXMLElement)#14 (4) { ["Name"]=> string(19) "Commercial Property" ["Number"]=> string(10) "0350-0100-" ["Subcategories"]=> object(SimpleXMLElement)#35 (1) { ["Category"]=> array(3) { [0]=> object(SimpleXMLElement)#36 (4) { ["Name"]=> string(9) "Car parks" ["Number"]=> string(15) "0350-0100-8946-" ["Subcategories"]=> object(SimpleXMLElement)#39 (0) { } }

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• alter mysqldump file before import

  - by julio

  Hi-- I have a mysqldump file created from an earlier version of a product that can't be imported into a new version of the product, since the db structure has changed slightly (mainly altering a column that was NOT NULL DEFAULT 0 to UNIQUE KEY DEFAULT NULL). If I just import the old dump file, it will error out since the column that has default values of 0 now breaks the UNIQUE constraint. It would be easy enough to either manually alter the mysqldump file, or import into a temp table and change it, then copy to the new table. However, is there a way to do this programatically, so it will be repeatable and not manual? (this will need to happen for many instances of this product). I'm thinking something like disabling key constraints for the import, then setting all values that = 0 to NULL, then re-enabling the key constraints? Is this possible? Any help appreciated.

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• How to store and compare time-zone sensitive times

  - by Chad Moran

  I have a data structure where an entity has times stored as an int (minutes into the day) for fast comparison. The entity also has a Foreign Key reference back to a TimeZone table which contains the .NET CLR ID Name and it's Standard Time/Daylight Time acronyms. Since this information is stored as time-zone insensitive - I was wondering how in LINQ to SQL I could convert this into a UTC DateTime for comparison against other times that will be in UTC. Just to be clear this conversion has to be done server-side so that I can execute filtering on the SQL Server and not the client. I am using .NET 3.5 SP1 and SQL Server 2008.

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• How does one write extconf.rb files when one extension includes header files from another?

  - by mohawkjohn

  This is a follow-up question for: Multiple Ruby modules under one directory What happens if these extensions include each other? For example, you have the following structure: ext/foo ext/bar In ext/bar/bar.h, you have a #include "foo.h" foo.h and foo.cpp compile to form foo.o, to make life a little more complicated. Finally, it is necessary that foo and bar be separate extensions. How is this managed? I can't figure out how to add ../foo to the search path for bar.h, primarily. Symbolic links seem hack-ish.

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• Redirect before rewrite

  - by Kirk Strobeck

  Had an issue where I need to redirect old URLs, but not disable the mod_rewrite for page structure. redirect 301 /home.html http://www.url.com/ It needs to live on the Symphony 2.0 .htaccess file ### Symphony 2.0.x ### Options +FollowSymlinks -Indexes <IfModule mod_rewrite.c> RewriteEngine on RewriteBase / ### DO NOT APPLY RULES WHEN REQUESTING "favicon.ico" RewriteCond %{REQUEST_FILENAME} favicon.ico [NC] RewriteRule .* - [S=14] ### IMAGE RULES RewriteRule ^image\/(.+\.(jpg|gif|jpeg|png|bmp))$ extensions/jit_image_manipulation/lib/image.php?param=$1 [L,NC] ### CHECK FOR TRAILING SLASH - Will ignore files RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_URI} !/$ RewriteCond %{REQUEST_URI} !(.*)/$ RewriteRule ^(.*)$ $1/ [L,R=301] ### ADMIN REWRITE RewriteRule ^symphony\/?$ index.php?mode=administration&%{QUERY_STRING} [NC,L] RewriteCond %{REQUEST_FILENAME} !-d RewriteCond %{REQUEST_FILENAME} !-f RewriteRule ^symphony(\/(.*\/?))?$ index.php?symphony-page=$1&mode=administration&%{QUERY_STRING} [NC,L] ### FRONTEND REWRITE - Will ignore files and folders RewriteCond %{REQUEST_FILENAME} !-d RewriteCond %{REQUEST_FILENAME} !-f RewriteRule ^(.*\/?)$ index.php?symphony-page=$1&%{QUERY_STRING} [L] </IfModule> ######

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• How to receive packets on the MCU's serial port?

  - by itisravi

  Hello, Consider this code running on my microcontroller unit(MCU): while(1){ do_stuff; if(packet_from_PC) send_data_via_gpio(new_packet); //send via general purpose i/o pins else send_data_via_gpio(default_packet); do_other_stuff; } The MCU is also interfaced to a PC via a UART.Whenever the PC sends data to the MCU, the *new_packet* is sent, otherwise the *default_packet* is sent.Each packet can be 5 or more bytes with a pre defined packet structure. My question is: 1.Should i receive the entire packet from PC using inside the UART interrut service routine (ISR)? In this case, i have to implement a state machine inside the ISR to assemble the packet (which can be lengthy with if-else or switch-case blocks). 2.Detect a REQUEST command (one byte)from the PC in my ISR set a flag, diable UART interrupt alone and form the packet in my while(1) loop by polling the UART?

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• Return XML data from a web service

  - by Nick LaMarca

  What is the best way to create a web service that returns a set of x,y coordinates? I am not sure on the object that is the best return type. When consuming the service I want to have it come back as xml preferibly something like this for example: <TheData> <Point> <x>0</x> <y>2</y> </Point> <Point> <x>5</x> <y>3</y> </Point> </TheData> If someone has a better structure to return please help I am new at all this.

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• plot only x and y axis (no box) in ggplot2

  - by Tyler Rinker

  The convention of some journals is to show only the x and y axis in a plot not a box around the entire plot area. How can I achieve this in ggplot2? I tried theme_minimal_cb_L from HERE but it seems to erase the entire box around the plot (does not leave the x and y axis) as seen here: Here's the code I'm using: dat <- structure(list(x = c(0.7, 0.75, 0.8, 0.85, 0.9, 0.95, 1, 1.05, 1.1, 1.15, 1.2, 1.25, 1.3), y1 = c(34, 30, 26, 23, 21, 19, 17, 16, 15, 13, 12, 12, 11), y2 = c(45, 39, 34, 31, 28, 25, 23, 21, 19, 17, 16, 15, 14)), .Names = c("x", "y1", "y2"), row.names = c(NA, -13L), class = "data.frame") library(reshape2); library(ggplot2) dat2 <- melt(dat, id='x') theme_minimal_cb_L <- function (base_size = 12, base_family = "", ...){ modifyList (theme_minimal (base_size = base_size, base_family = base_family), list (axis.line = element_line (colour = "black"))) } ggplot(data=dat2, aes(x=x, y=value, color=variable)) + geom_point(size=3) + geom_line(size=.5) + theme_minimal_cb_L()

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• How sync the MYSQL database to remote server and from remote to desktop server

  - by qulzam

  I make a application, which has to interfaces. one is desktop and other is web application. both have their own databases (which are same is structure). I want to sync the database from desktop to remote server and also from remote server to desktop but i have no idea that how it does. I use the MYSql database. and my desktop application is in .NET NOTE: There are more than one destop systems who update their databases and also sync databases.

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• Can a user be a member of multiple Organization Units (OU) in Active Directory ?

  - by Stormshadow

  Can a user be a member of multiple Organization Units (OU) in Active Directory ? Also, is there a standard format mentioned by Microsoft on how an OU should be created and what its attributes are ? I found this in Wikipedia "However, Organizational Units are just an abstraction for the administrator, and do not function as true containers; the underlying domain operates as if objects were all created in a simple flat-file structure, without any OUs. It is not possible for example to create two user accounts with an identical username in two separate OUs, such as "fred.staff-ou.domain" and "fred.student-ou.domain"."

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• Object to Network serialization - with an existing protocol

  - by cpf

  I'm writing a client for a server program written in C++. As is not unusual, all the networking protocol is in a format where packets can be easily memcopied into/out of a C++ structure (1 byte packet code, then different arrangements per packet type). I could do the same thing in C#, but is there an easier way, especially considering lots of the data is fixed-length char arrays that I want to play with as strings? Or should I just suck it up and convert types as needed? I've looked at using the ISerializable interface, but it doesnt look as low level as is required.

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• basic json > struct question

  - by danwoods

  I'm working with twitter's api, trying to get the json data from http://search.twitter.com/trends/current.json which looks like: {"as_of":1268069036,"trends":{"2010-03-08 17:23:56":[{"name":"Happy Women's Day","query":"\"Happy Women's Day\" OR \"Women's Day\""},{"name":"#MusicMonday","query":"#MusicMonday"},{"name":"#MM","query":"#MM"},{"name":"Oscars","query":"Oscars OR #oscars"},{"name":"#nooffense","query":"#nooffense"},{"name":"Hurt Locker","query":"\"Hurt Locker\""},{"name":"Justin Bieber","query":"\"Justin Bieber\""},{"name":"Cmon","query":"Cmon"},{"name":"My World 2","query":"\"My World 2\""},{"name":"Sandra Bullock","query":"\"Sandra Bullock\""}]}} My structs look like: type trend struct { name string query string } type trends struct { id string arr_of_trends []trend } type Trending struct { as_of string trends_obj trends } and then I parse the JSON into a variable of type Trending. I'm very new to JSON so my main concern is making sure I've have the data structure correctly setup to hold the returned json data. I'm writing this in 'Go' for a project for school. (This is not part of a particular assignment, just something I'm demo-ing for a presentation on the language)

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• Search relevance from XML docs (XQuery?) vs MySQL

  - by Marius

  Hello there, I have a website where documents are saved in xml documents, all with the same structure. I need a search engine where I am able to choose documents with the highest relevance according to the key words given by a searching user. I thought it could (?) be a good idea to have one using XQuery rather than having the information stored twice (in XML docs + mysql database) and querying the mysql database for relevance searches. Is XQuery any good for this, and how, and what speed can I expect on +1000 documents of about 7kb each. Thank you for your time. Kind regards

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• jQuery variables and scope

  - by Peuge

  I am writing a jQuery plugin and am running into a few problems with regard to variables. For example I have the following skeleton structure for my plugin, which is going to act on a textbox. In my init function I want to set a variable and bind a keypress event to my textbox. That keypress event needs to call another function, in which I need the variable. Is this possible? (function($){ var methods = { init : function(options){ return this.each(function(){ var $this = $(this); var someVar = 'somevar'; $this.keypress(function(event){ //I want to call my customFunction }); }); }, customFunction : function(){ //I am wanting to access 'someVar' here }; $.fn.mynamespace = function(method){ //handle which method to call here }; })(jQuery); Many thanks in advance.

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• c++ std::map question about iterator order

  - by jbu

  Hi all, I am a C++ newbie trying to use a map so I can get constant time lookups for the find() method. The problem is that when I use an iterator to go over the elements in the map, elements do not appear in the same order that they were placed in the map. Without maintaining another data structure, is there a way to achieve in order iteration while still retaining the constant time lookup ability? Please let me know. Thanks, jbu edit: thanks for letting me know map::find() isn't constant time.

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• Getting the correct node

  - by YsoL8

  Hello I have this structure in my dom: <label>London<input type="checkbox" name="London"></label><br> <div class="innerpost"> <label>N1 2AB<input type="checkbox" name="N1 2AB"></label><br> <label>E1 1AB<input type="checkbox" name="E1 1AB"></label><br> </div> I need a way to select the div from the first checkbox. Something like parentNode.parentNode.getElementsByTagName("div"); But I'm not getting it right - that particular line selects all the divs one parent above the one I need.

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• insert into several inheritance tables with OUTPUT - sql servr 2005

  - by csetzkorn

  Hi, I have a bunch of items – for simplicity reasons – a flat table with unique names seeded via bulk insert: create table #items ( ItemName NVARCHAR(255) ) The database has this structure: create table Statements ( Id INT IDENTITY NOT NULL, Version INT not null, FurtherDetails varchar(max) null, ProposalDateTime DATETIME null, UpdateDateTime DATETIME null, ProposerFk INT null, UpdaterFk INT null, primary key (Id) ) create table Item ( StatementFk INT not null, ItemName NVARCHAR(255) null, primary key (StatementFk) ) Here Item is a child of Statement (inheritance). I would like to insert items in #items using a set based approach (avoiding triggers and loops). Can this be achieved with OUTPUT in my scenario. A ‘loop based’ approach is just too slow where I use something like this: insert into Statements (Version, FurtherDetails, ProposalDateTime, UpdateDateTime, ProposerFk, UpdaterFk) VALUES (1, null, getdate(), getdate(), @user_id, @user_id) etc. This is a start for the OUTPUT based approach – but I am not sure whether this would work in my case as ItemName is only inserted into Item: insert into Statements ( Version, FurtherDetails, ProposalDateTime, UpdateDateTime, ProposerFk, UpdaterFk ) output inserted.Id ... ??? Thanks. Best wishes, Christian

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• Why does $('#id') return true if id doesn't exist?

  - by David

  I always wondered why jQuery returns true if I'm trying to find elements by id selector that doesnt exist in the DOM structure. Like this: <div id="one">one</div> <script> console.log( !!$('#one') ) // prints true console.log( !!$('#two') ) // is also true! (empty jQuery object) console.log( !!document.getElementById('two') ) // prints false </script> I know I can use !!$('#two').length since length === 0 if the object is empty, but it seems logical to me that a selector would return the element if found, otherwise null (like the native document.getElementById does). F.ex, this logic can't be done in jQuery: var div = $('#two') || $('<div id="two"></div>'); Wouldnt it be more logical if the ID selector returned null if not found? anyone?

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