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Search found 1685 results on 68 pages for 'no more guessing'.

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• Doing a count over a filter query efficiently in django

  - by apple_pie

  Hello, Django newbie here, I need to do a count over a certain filter in a django model. If I do it like so: my_model.objects.filter(...).count() I'm guessing it does the SQL query that retrieves all the rows and only afterwards does the count. To my knowledge it's much more efficient to do the count without retrieving those rows like so "SELECT COUNT(*) FROM ...". Is there a way to do so in django?

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• simple dividing

  - by dontoo

  Lets say I am dividing 2592 / 324 = 8 Practically I must guess that 324 goes 8 times in 2592 without reminder. For example, first I try with 7 ( 7*324 = 2268, reminder 324, so 7 is wrong, so I try with 8 and 8 is correct) Is there anyway to do dividing without guessing( trying ), like multiplication ( all mechanically, digit by digit )?

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• A few questions about char pointers.

  - by m4design

  1- How does this work: char *ptr = "hi"; Now the compiler will put this string in the memory (I'm guessing the stack), and create a pointer to it? Is this is how it works? 2- Also if it is created locally in a function, when the function returns will the memory occupied by the string be freed? 3- Last but not least, why is this not allowed: ptr[0] = 'H'; ?

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• Can't get GetModuleFileNameA to work, keep getting error 'missing type specifier...'

  - by flavour404

  Hi, I am trying to use 'GetModuleFileNameA' but I keep getting the error 'c4430: missing type specifier - int assumed'. From reading the results from my google search I am guessing that it is from my use of NULL: char Filename[MAX_PATH]; //this is a char buffer GetModuleFileNameA(NULL, Filename, sizeof(Filename)); NULL is supposedly defined in #include stdio.h which I have included in my project, what am I doing wrong? Thanks.

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• VS2010 Database Compare. How do you create a *.DBSchema extensioned file?

  - by George

  I'd like to take a snapshot of my database, make some changes and then use the db compare functionality to identify the changes, and who knows, maybe even generate scripts to make the change. I'd like to avoid having to backup the current db and restore it as a separate db just to have a "before" snapshot. I'm guessing I shouldn't have to. Obsviously, I'm clueless about db projects and am looking to be pointed in the right direction. ty!

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• Will First() perform the OrderBy()?

  - by Martin

  Is there any difference in (asymptotic) performance between Orders.OrderBy(order => order.Date).First() and Orders.Where(order => order.Date == Orders.Max(x => x.Date)); i.e. will First() perform the OrderBy()? I'm guessing no. MSDN says enumerating the collection via foreach och GetEnumerator does but the phrasing does not exclude other extensions.

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• Recreating the Apple Store's summary that moves with the page scrolling

  - by Darryl Hein

  I'm looking to create something like what Apple has on their online store for displaying the summary of your computer and total as seen here. I'm guessing this is JavaScript, but it'd be even cooler if it could be done in CSS. Basically I'd like something scrolls with the page like position:fixed, but I don't want it to start moving until the user has scroll past a certain position. I'm using jQuery, so a jQuery plugin would be perfect as well.

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• acknowledgments in latex

  - by biosci

  I'm in a documentclass{article} in Latex. How would I put the name of an advisor on the first page? I've seen examples in latex for things like \principaladvisor{} but that seems to be done with the thesis class. I'm guessing with the article class I'd list the advisor as a co-author or something. How do I do that?

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• How old are CSS filters?

  - by Kyle Sevenoaks

  Filters like img {filter:flipV;} I'm guessing are pretty old, I just was asked by a colleague why they weren't working for him in FF. I assume they were an IE only thing that died out a while back?

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• How do you retrieve a list of logged-in/connected users in .NET?

  - by Engram

  Here's the scenario: You have a Windows server that users remotely connect to via RDP. You want your program (which runs as a service) to know who is currently connected. This may or may not include an interactive console session. Please note that this is the not the same as just retrieving the current interactive user. I'm guessing that there is some sort of API access to Terminal Services to get this info?

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• is there a way to designate the line token delimiter in Perl's file reader?

  - by Dr.Dredel

  I'm reading a text file via CGI in, in perl, and noticing that when the file is saved in mac's textEdit the line separator is recognized, but when I upload a CSV that is exported straight from excel, they are not. I'm guessing it's a \n vs. \r issue, but it got me thinking that I don't know how to specify what I would like the line terminator token to be, if I didn't want the one it's looking for by default.

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• Why does refreshing a page with a google map often fail?

  - by Shawn

  I'm working on a website that needs google maps, and testing is being a bitch because refreshing the page very often fails (hangs endlessly) so I need to go to a different page and come back in order to test the new version of the code. I have noticed that refreshing the page only fails on pages with maps, so I'm guessing these are related. Does anyone have a clue?

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• Sorting Custom Objects with Parameter in .NET?

  - by Jeffrey Kern

  Let's say I have a custom object of Foo Is there anyway I can sort through a list of these objects, like list<of foo>.sort() and also be able to sort this list with a passable parameter. which will influence the sort? list<of foo>.sort(pValue) I'm guessing I'll need to define two separate sorts, but I am not sure.

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• Divs not aligning side by side

  - by Abijah

  I've been learning about divs over the past few months, and am now able to align divs side by side. However, today I was working on my website, and my divs suddenly stopped lining up. The divs in question are: #dorsey_left, #dorsey_middle and #dorsey_right. When I remove #dorsey_left from the HTML document, #dorsey_middle and #dorsey_right align properly. I'm guessing that the problem is related to #dorsey_left, but I can't find anything in the code. This is the JsFiddle.

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• Multiple bindings expressions in one statement

  - by Abhijeet Patel

  Does WPF support multiple binding expressions in one statement? Something along the lines of the following: <TextBlock Text="{Binding Path=OrderID} shipped on {Binding Path=OrderDate}"/> I'm guessing that it does but I think I just don't have the correct syntax.

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• Javascript Memory Limit

  - by Dänu

  Hey Guys, I was wondering if there is a "maximum" of data a javascript application can store. I guess this is handled by the browser and that each one has it's limitation? Am I guessing right? Wrong? If there isn't a limit, will a page file be created (wouldn't be very secure I guess).

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• Ruby 1.8.7 and RSPEC tutorial

  - by Ben Nelson

  I'm just diving into ruby development for a class assignment and the machines at my Uni have only got ruby 1.8.7 on them so I need to develop for that. I have found tutorials on the web for ruby = 1.9 and rspec that are really good but I haven't found anything for ruby 1.8.7 (I'm guessing it's pretty dated?). Does anyone have anything using rspec testing and has an indepth discussion on ruby 1.8.7 for me? I'd really appreciate it! Thanks!

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• What is the difference between the $get and $find functions?

  - by Chris Dwyer

  What is the difference between the $get and $find functions in javascript? I'm guessing that these functions aren't really javascript-native things, so an additional question would be what are they native to?

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• MySQL count statements error - operand should contain 1 column(s)

  - by jason

  I am trying to do multiple counts everyone was working accept the first sub select (list1) I get an error that reads "Operand should contain 1 column(s)" i'm guessing it has something to do with the AND, but i'm not sure how I would fix this one. Select Count(list0.ustatus) AS finished_count, (Select list1.ustatus, Count(*) From listofupdates list1 Where list1.ustarted != '0000-00-00 00:00:00' AND list1.ustatus != 1) AS start_count, (Select Count(list2.udifficulty) From listofupdates list2 Where list2.udifficulty = 2) AS recheck_count, (Select Count(list3.udifficulty) From listofupdates list3 Where list3.udifficulty = 4) AS question_count From listofupdates list0 Where list0.ustatus = 1

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• Editing .aspx file makes Visual Studio unresponsive.

  - by dev.e.loper

  I'm using Visual Studio 2008 on Windows 7. When I'm editing .aspx file VS stalls and thinks for about 3 sec every time I add a tag. Very frustrating. I'm guessing its doing some kind of compilation or checking. What can I do to make VS more responsive?

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• After install of VS 2010, many powershell scripts broken

  - by Brian

  I recently upgraded to VS 2010. Shortly after I noticed many powershell scripts I had written in the past no longer worked correctly. I am guessing that its because of .NET 4. Is there any way to fix this, or force powershell to use the older .NET? Thanks for any help anyone can provide.

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• Sorting Custom Objects with Parameter in VB.Net/C#

  - by Jeffrey Kern

  Let's say I have a custom object of Foo Is there anyway I can sort through a list of these objects, like list<of foo>.sort() and also be able to sort this list with a passable parameter. which will influence the sort? list<of foo>.sort(pValue) I'm guessing I'll need to define two separate sorts, but I am not sure. Thanks!

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• Changing /page.php to /page/

  - by Dirge2000

  Hey there, I'm trying to change all http://www.mysite.com/filename.php files to show as http://www.mysite.com/filename/ using mod_rewrite, but I seem to be doing something wrong. Can anyone help out? I'm guessing it's something pretty simple for those that know. Thanks.

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• What does #error do?

  - by cambr

  I am guessing from # that it is only a compile-time utility. How can it be used in C/C++ programs? Did not find much about it on the internet. Any links would be helpful.

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• TSql Lookup function

  - by OldMan

  I have a bunch of dimension tables that have unique ID and Name fields. I need a T-SQL function that returns an ID when passed a table name and a value for the name field. I'm guessing the query would build a little query then execute it? Performance isn't an issue since this is a one time ETL thing.

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