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• How to write a large number of nested records in JSON with Python

  - by jamesmcm

  I want to produce a JSON file, containing some initial parameters and then records of data like this: { "measurement" : 15000, "imi" : 0.5, "times" : 30, "recalibrate" : false, { "colorlist" : [234, 431, 134] "speclist" : [0.34, 0.42, 0.45, 0.34, 0.78] } { "colorlist" : [214, 451, 114] "speclist" : [0.44, 0.32, 0.45, 0.37, 0.53] } ... } How can this be achieved using the Python json module? The data records cannot be added by hand as there are very many.

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• Approximate Number of CPU Cycles for Various Operations

  - by colordot

  I am trying to find a reference for approximately how many CPU cycles various operations require. I don't need exact numbers (as this is going to vary between CPUs) but I'd like something relatively credible that gives ballpark figures that I could cite in discussion with friends. As an example, we all know that floating point division takes more CPU cycles than say doing a bitshift. I'd guess that the difference is that the division is around 100 cycles, where as a shift is 1 but I'm looking for something to cite to back that up. Can anyone recommend such a resource?

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• iPhone SDK - Number of days between day and today

  - by Hankweb

  I need help on how to find out how many days it has been (seven day weeks, MSTimezone) since May 6th, 2009 [NSDate *m62009 = [NSDate dateWithTimeIntervalSinceReferenceDate:231638400]; [m62009 setTimeZone:[NSTimeZone timeZoneWithAbbreviation:@"MST"]; (to help you - 231638400 seconds from 1/1/2001)

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• Given a decimal number, find the smallest integer multiplier that gives an integer result

  - by Davorin

  Best to use an example to describe the problem. Lets say I have a decimal value 100.227273. 100.227273 * X = Y I need to find the smallest possible integer X that gives integer Y.

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• Wordpress show next 3 x number adjacent custom posts from existing

  - by user2463284

  On a single/detail Custom Post Page I would like to display a custom nav of li's or divs in a sidebar that displays both title, excerpt and permalink for the next 3 posts within the custom post series. So if we are on custom post 3 then it would show 4, 5, 6 in the sidebar. The closest I've found to this is :-= global $post; $current_post = $post; // remember the current post for($i = 1; $i <= 3; $i++){ $post = get_previous_post(); // this uses $post->ID setup_postdata($post); // do your stuff here the_title(); } $post = $current_post; // restore Problem is this only shows the first next post and I need to show 3. Thanks Glennyboy

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• Bash script to pull out x number of starting comment lines into another file

  - by Corey Hart

  I am looking for a one liner to pull out the first comment block in any file. The comment blocks look like this: /* * This is a * comment block */ I've been trying to play with sed, but just can't get it to work right. Help?

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• I want to count the number of occurences of each character in a string

  - by roe

  Ignore spaces, punctuation and anything else that is not a letter. Ignore the case of the incoming letters (so e.g. 'A' and 'a' should be counted together). The results of analysing this string should be added to any analysis performed by previous calls to this method.

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• Best practices for displaying large number of images as thumbnails in c#

  - by andySF

  I got to a point where it's very difficult to get answers by debugging and tracing object, so i need some help. What I'm trying to do: A history form for my screen capture pet project. The history must list all images as thumbnails (ex: picasa). What I've done: I created a HistoryItem:UserControl. This history item has a few buttons, a check box, a label and a picture box. The buttons are for delete/edit/copy image. The check box is used for selecting one or more images and the label is for some info text. The picture box is getting the image from a public property that is a path and a method creates a proportional thumbnail to display it when the control has been loaded. This user control has two public events. One for deleting the image and one for bubbling the events for mouse enter and mouse leave trough all controls. For this I use EventBroadcastProvider. The bubbling is useful because wherever I move the mouse over the control, the buttons appear. The dispose method has been extended and I manually remove the events. All images are loaded by looping a xml file that contains the path of all images. For each image in this XML I create a new HitoryItem that is added (after a little coding to sort and limit the amount of images loaded) to a flow layout panel. The problem: When I lunch the history form, and the flow layout panel is populated with my HistoryItem custom control, my memory usage increases drastically.From 14Mb to around 100MB with 100 images loaded. By closing the history form and disposing whatever I could dispose and even trying to call GC.Collect() the memory increase remain. I search for any object that could not be disposed properly like an image or event but wherever I used them they are disposed. The problem seams to be from multiple sources. One is that the events for bubbling are not disposing properly, and the other is from the picture box itself. All of this i could see by commenting all the code to a limited version when only the custom control without any image processing and even events is loaded. Without the events the memory consumption is reduced by axiomatically 20%. So my real question is if this logic, flow layout panels and custom controls with picture boxes, is the best solution for displaying large amounts of images as thumbnails. Thank you!

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• How to convert a number to a range of prices

  - by Anon1865

  Hi, I want to calculate the amount to charge my customers, when they buy licenses of my product. I sell it in ranges of licenses: 1-10 : $50/user 11-20 : $40/user 21-30 : $30/user 31-50 : $20/user So when someone purchases 136 licenses, I will charge him: 100 X $20 = $2000 30 X $30 = $900 6 X $50 = $300 How can I do this in plain C# or LINQ? Thanks in advanced.

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• Import a number of csv files and replace NA by Zeros

  - by tao.hong

  I know how to do this individually. However, I have more than 1000 files. I decided to use a for loop. However, it seems like I did not find the correct way to evaluate my variables. Here is my code setwd('C:/data') filenames=dir() #find file names for (i in filenames){ adt = substr(x = i, start = 1, stop = nchar(i)-4) name=paste("data_", adt, sep="") assign(name, read.csv(i,header=T,sep=",")) #read each file and assign a variable name starting with data_ to it func=paste('name[is.na(name)] <- 0',sep="") # here is the place I have problem. R will not consider name is a parameter whose values change in each iteration eval((text=func)) }

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• Redirect Large Number of URLs (HTML Files) to Wordpress

  - by Chetan

  Hi, I have over 2000 HTML files that are now in Wordpress blog. I have the URL Map of Old_file.html and new wordpress URL. I want 301 redirect but don't want to add 2000 lines to htaccess. Can you please suggest how to accomplish this using PHP so that when there is a request for old url, the php script should lookup into the database and redirect(301) to the new URL ? Thanks.

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• java number exceeds long.max_value - how to detect?

  - by jurchiks

  I'm having problems detecting if a sum/multiplication of two numbers exceeds the maximum value of a long integer. Example code: long a = 2 * Long.MAX_VALUE; System.out.println("long.max * smth > long.max... or is it? a=" + a); This gives me -2, while I would expect it to throw a NumberFormatException... Is there a simple way of making this work? Because I have some code that does multiplications in nested IF blocks or additions in a loop and I would hate to add more IFs to each IF or inside the loop. Edit: oh well, it seems that this answer from another question is the most appropriate for what I need: http://stackoverflow.com/a/9057367/540394 I don't want to do boxing/unboxing as it adds unnecassary overhead, and this way is very short, which is a huge plus to me. I'll just write two short functions to do these checks and return the min or max long. Edit2: here's the function for limiting a long to its min/max value according to the answer I linked to above: /** * @param a : one of the two numbers added/multiplied * @param b : the other of the two numbers * @param c : the result of the addition/multiplication * @return the minimum or maximum value of a long integer if addition/multiplication of a and b is less than Long.MIN_VALUE or more than Long.MAX_VALUE */ public static long limitLong(long a, long b, long c) { return (((a > 0) && (b > 0) && (c <= 0)) ? Long.MAX_VALUE : (((a < 0) && (b < 0) && (c >= 0)) ? Long.MIN_VALUE : c)); } Tell me if you think this is wrong.

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• Creating phone number format standard php

  - by Webnet

  I found this resource when looking to commonly format user's phone numbers.... http://www.eyesis.ca/projects/formatphone.html I was wondering if someone else might have a better solution.

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• Determining the number of objects in an NSArray

  - by Viral

  Hi friends, I am making a book application. To move to the next topic I am using a button. The Button works as it moves to the next topic, but at the end of the file my application gets the message obj_fatal and it crashes. If I knew how many objects there are in my NSArray then the problem will be solved. I am getting the details from a .plist file and storing it in to a array. So if any one knows how, please let me know. Thanks in advance. Viral.

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• add commas using String.Format for number and

  - by raklos

  Using String.Format how can i ensure all numbers have commas after every 3 digits eg 23000 = "23,000" and that 0 returns "0". String.Format("{0:n}", 0); //gives 0.00 which i dont want. I dont want any decimal places, all numbers will be integers.

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• Validate number of nested attributes

  - by Damien MATHIEU

  Hello, I have a model with nested attributes : class Foo < ActiveRecord::Base has_many :bar accepts_nested_attributes_for :bar end It works fine. However I'd want to be sure that for every Foo, I have at least two Bar. I can't access the bar_attributes in my validations so it seems I can't validate it. Is there any clean way to do so ?

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• Getting the number of posts a user has by the number of rows returned?

  - by transparent

  So I have a question. I have chatting/IM website that I am working on and I was making a user profile page. I wanted to show how many posts that user had. Another issue I had earlier was that when I called a certain value it would return a 'Resource #1' type string. But I got that working by using $totalposts=mysql_query("SELECT * FROM `posts` WHERE Username='" . $username . "'"); $totalposts = mysql_fetch_row($totalposts); $totalposts = $totalposts[0]; But that just returns the last postID of the most recent post. I thought that mysql_num_rows would work. But this code returns an error (example with numbers): 29: $totalposts=mysql_query("SELECT * FROM `posts` WHERE Username='" . $username . "'"); 30: $totalposts = mysql_num_rows($totalposts); 31: $totalposts =mysql_fetch_row($totalposts); 32: $totalposts = $totalposts[0]; That returns this error: Warning: mysql_fetch_row(): supplied argument is not a valid MySQL result resource in /home/a9091503/public_html/im/user.php on line 31 Thanks guys. :) I hope you can figure this out. :D

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• PHP Fatal error on line number that doesn't exist

  - by alexantd

  Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 523800 bytes) in /Library/WebServer/Documents/XMLDataStore.class.php on line 981 The curious thing about this error is not the memory leak, which would be easy enough to troubleshoot. Rather, it is the fact that XMLDataStore.class.php is only 850 lines long, which I have verified in multiple text editors. This is with the PHP 5.3 bundled with Snow Leopard. I'm not using an opcode cache. Here is my php.ini: allow_url_fopen = Off error_reporting = -1 display_errors = 1 display_startup_errors = 1 date.timezone = 'America/Los_Angeles' output_buffering = Off realpath_cache_size = 0k XMLDataStore.class.php has recently been refactored and it used to be longer than 981 lines. It's almost as if PHP has cached a 2-week-old version and is reading that. I'm positive that the current version at /Library/WebServer/Documents/XMLDataStore.class.php is only 850 lines long, though.

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• Passing a web service an unknown number of parameters

  - by Billyhole

  I'm relatively new to utilizing web services. I'm trying to create one that will be accepting data from a ASP.Net form whose input controls are created dynamically at runtime and I don't how many control values will be getting passed. I'm thinking I'll be using jQuery's serialize() on the form to get the data, but what do I have the web service accept for a parameter? I thought maybe I could use serializeArray(), but still I don't know what type of variable to accept for the JavaScript array. Finally, I was thinking that I might need to create a simple data transfer object with the data before sending it along to the web service. I just didn't wanna go through with the DTO route if there was a much simpler way or an established best practice that I should follow. Thanks in advance for any direction you can provide and let me know I wasn't clear enough, or if you have any questions.

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• Removing word + wildcard number from string

  - by zx

  Hi, I have a string that is $str = "testingSUB1"; How can I strip out SUB* from the string? I assume using preg_replace but I'm not good with matching what I want with regex. Does anyone know how I can do this? Thank you

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• [mysql] having a number in

  - by Wiika

  Hi all, ID Name Hidden 1 Mika 1,4,2 2 Loca 0 3 Nosta 4 4 Like 2 can someone give me a query that will return as a result rows ID 1 & 3 something like this SELECT * FROM table WHERE Hidden HAVING(4) Thanks, I Appreciate

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• Maximum number of records jquery grid can display?

  - by kumar

  can any body help me out this problem, I have jquery grid, i am trying to display 20k records or users on the grid? what i am doing is first using stored procrdure i am getting all 20k records, initially each page 100 records i am shoiwng in the jquery grid... on the top of the jquery grid i have GetAll button,,, if i click this button i need to see all 20k records on the grid in a single page.. is there any way we can handle this? thanks

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• How to initialize all elements in an array to the same number in C++

  - by Phenom

  I'm trying to initialize an int array with everything set at -1. I tried the following, but it doesn't work. It only sets the first value at -1. int directory[100] = {-1}; Why doesn't it work right?

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• Regex to test if an input string contains a certain number of characters

  - by Dan

  So, I basically would like to test to see if a string contains a range of alphanumeric characters. It's to be used as a client-side validation and I don't want to prevent users from entering whatever they want. Best to give examples of what should/should not pass validation: So to be specific, the expression I'm looking for is to test to make sure string contains anywhere from 3 to 10 alphanumeric characters. I'd like to plug into an ASP.NET client side validator. NOTE: quotes not part of input (but could be!) " f o o " should pass since there are 3 chars "f_0_0" should pass " fo " should not "F......o......o......b.....a......r" should pass thx

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• Magento sales report number inconsistent with actual orders

  - by user351205

  When I view the Sales report (Reports-Sales), it tells me I have 22 orders and made over $1000. When I view the orders (Sales-Orders), there are only 15 orders and I made a lot less. Also, the dashboard only shows $737. Where are all these numbers coming from? I'm using Magento 1.4.0.1.

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