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• Are Ruby formatted strings and interpolated strings identical in behaviour?

  - by Steve Weet

  Do the following two lines of code behave in exactly the same way despite slightly different implementations values.map{ |k,v| __send__('%s=' % k.to_s, v) } values.map{ |k,v| __send__("#{k.to_s}=", v) } The second line would be a more common ruby idiom so I was wondering why the other method was used when this was in the Rails Core which I would expect to use idiomatic ruby.

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• Will my shared variables loose value? (asp.net vb)

  - by Phil

  I have a class includes.vb that holds some variables (sharing them with other pages) like: Public Shared pageid As Integer = 0 I then have a function that does some work with these variables returning them with values; Return pageid When I step through the code, the variables have values (while stepping through the function), but when they are returned to the page, they come back null. Do they loose value everytime a page is loaded? Can you suggest an alternative method? Thanks a lot.

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• PHP - get MySQL query results as their native data type?

  - by redidas

  I've tried fetching MySQL query results using mysql_fetch_row() mysql_result() and numeric values are being returned as strings. Is there any way to fetch the data as its datatype stored in the table? The application will be querying many different queries so I will be unable to cast the values as the intended datatype on a 1 by 1 basis.

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• Why does this properly escaped SQL query fail?

  - by Jason Rhodes

  Here's the query: INSERT INTO jobemails (jobid, to, subject, message, headers, datesent) VALUES ('340', '[email protected]', 'We\'ve received your request for a photo shoot called \'another\'.', 'message', 'headers', '2010-04-22 15:55:06') The datatypes are all correct, it always fails at the subject, so it must be how I'm escaping the values, I assume. I'm sure one of you will see my idiot mistake right away. A little help?

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• How to add two textField value

  - by mukeshpawar

  hi .. i want to take two textfields values and add the values and show them into another textField. How to do this programatically. Thanks in advance

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• C++ pointer to different array

  - by begun

  Assume I have an array a and an array b. Both have the same type and size but different values. Now I create 3 or so pointers that point to different elements in a, you could say a[ 0 ], a[ 4 ] and a[ 13 ]. Now if I overwrite a with b via a=b - Where will the pointers point? Do the pointers still point to their original positions in a but the values they point to are now those of b?

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• Is this possible with sql?

  - by Andrew

  Is it possible to do something like this: INSERT INTO table(col1, col2) VALUES(something_from_another_table, value); With something_from_another_table being a SQL command? Like, is there something I can do that's equivelant to: INSERT INTO table(col1, col2) VALUES((SELECT value FROM table2 WHERE id = 3), value);

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• VB.NET Enumeration Representation

  - by Steven

  Is it guaranteed that the numeric values for an Enum with only uninitialized values start at zero and increment by one in the order defined?

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• Problem using FormView to insert.

  - by matthew_360

  I have a formview control, and on the ItemCreated event, I am "priming" some of the fields with default values. However, when I try to use the formview to insert, before the ItemInserting event gets called, for some reason it calls ItemCreated first. That results in the fields being over-written with the default values right before the insert happens. How do I get it to not call the ItemCreated event before the ItemInserting event?

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• No warning from gcc when function definition in linked source different from function prototype in h

  - by c_c

  Hi, I had a problem with a part of my code, which after some iterations seemed to read NaN as value of a int of a struct. I think I found the error, but am still wondering why gcc (version 3.2.3 on a embedded Linux with busybox) did not warn me. Here are the important parts of the code: A c file and its header for functions to acquire data over USB: // usb_control.h typedef struct{ double mean; short *values; } DATA_POINTS; typedef struct{ int size; DATA_POINTS *channel1; //....7 more channels } DATA_STRUCT; DATA_STRUCT *create_data_struct(int N); // N values per channel int free_data_struct(DATA_STRUCT *data); int aqcu_data(DATA_STRUCT *data, int N); A c and header file with helper function (math, bitshift,etc...): // helper.h int mean(DATA_STRUCT *data); // helper.c (this is where the error is obviously) double mean(DATA_STRUCT *data) { // sum in for loop data->channel1->mean = sum/data->N; // ...7 more channels // a printf here displayed the mean values corretly } The main file // main.c #include "helper.h" #include "usb_control.h" // Allocate space for data struct DATA_STRUCT *data = create_data_struct(N); // get data for different delays for (delay = 0; delay < 500; delay += pw){ acqu_data(data, N); mean(data); // printf of the mean values first is correct. Than after 5 iterations // it is always NaN for channel1. The other channels are displayed correctly; } There were no segfaults nor any other missbehavior, just the NaN for channel1 in the main file. After finding the error, which was not easy, it was of course east to fix. The return type of mean(){} was wrong in the definition. Instead of double mean() it has to be int mean() as the prototype defines. When all the functions are put into one file, gcc warns me that there is a redefinition of the function mean(). But as I compile each c file seperately and link them afterwards gcc seems to miss that. So my questions would be. Why didn't I get any warnings, even non with gcc -Wall? Or is there still another error hidden which is just not causing problems now? Regards, christian

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• How do I generate an Array string from an array in memory (php).

  - by Itay Moav

  I need to create a big array in my code, I have the values in several tables (for easy management). I select it and now I have all the values in an array, in memory in the way I want. My problem, I need to write this array down, into the code. Is there a way to take an array which sits in the memory and translate it into a string "array('g'='h','b'='d'....)" which I can then echo and just copy-paste into my code?

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• length of dropdown list

  - by sushant

  i have a drop down list in my form. it contains a lot of values. so when i click on it, it covers whole of the page, along with the scroll bar. is there a way to limit the length of the drop down list, say showing only 10 values at a time. any help is very much appreciated

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• How to plot the graph(line) from a file in java?

  - by kiran

  I have a directory containing list of files. Those files have some list of values as x and y ordered as line by line. And my question is just I would like to read those files one by one and to plot line graphs based on those values. Could you please help me for that?

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• Clearing NSUserDefaults

  - by TonyNeallon

  I'm using +[NSUserDefaults standardUserDefaults] to store application settings. This consists of roughly a dozen string values. Is it possible to delete these values permanently instead of just setting them to a default value?

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• How can I use linq to select the columns of a jagged array

  - by CoGo

  How can I use linq in C# to select the columns of a jagged array of ints, I select the rows as follows. int[][] values; .... var rows = from row in values select row; Thank you for the help.

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• RegExp that matches any String containing "0-9" and "." and "-" and " "

  - by tzippy

  I need t check every line of a file for the following pattern: - 14 Values seperated by an irregular number of spaces. - Values may be negative (-), decimal seperator is a dot followed by maximum one digit - The line ends with several spaces here is an example line: 10015 20100501 1 4.6 6.4 8.4 10.5 86.6 4.0 13.0 0.9 6.4 0.0 1007.2 Thanks!

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• what does select @@identity do?

  - by every_answer_gets_a_point

  i am connecting to a mysql database through excel using odbc what does this line do? Set rs = oConn.Execute("SELECT @@identity", , adCmdText) i am having trouble updating the database: With rs .AddNew ' create a new record ' add values to each field in the record .Fields("datapath") = dpath .Fields("analysistime") = atime .Fields("reporttime") = rtime .Fields("lastcalib") = lcalib .Fields("analystname") = aname .Fields("reportname") = rname .Fields("batchstate") = "bstate" .Fields("instrument") = "NA" .Update ' stores the new record End With it is ONLY updating .Fields("instrument") = "NA", but for all other fields it is putting NULL values

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• Passing data between asp.net pages

  - by user204588

  Hello, I'm wondering the opinion of what is the best way to pass a lot of values between pages. I was thinking of either saving the values to a database, using context.Items[], or Session[]. I'm not sure about what is the best method. I'm passing probably around 40 variables.

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• Oracle Minus query. How can I get a result with NULLS if the top SQL and the bottom SQL don't contai

  - by George

  CREATE TABLE NewTable AS SELECT A,B,C FROM Table1 minus SELECT A, B, C From Table2 Create a new table with NULL values for column A when neither Table1 or Table2 had NULL values for this column. Yet, SELECT * FROM ( SELECT A,B,C FROM Table1 minus SELECT A, B, C From Table2 ) WHERE A IS NULL return 0 rows?

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• search substring from mutable array in iphone

  - by user566431

  how to search substring from mutable array? NSMutableArrray names having string values, searchText is a substring to search from name array values. for (NSString *sTemp in names) { NSRange titleResultsRange = [sTemp rangeOfString:searchText options:NSCaseInsensitiveSearch]; //NSLog(@"sTemp = %@, searchText = %@",sTemp,searchText); NSLog(@"%@",titleResultsRange.length); if (titleResultsRange.length > 0) [Items addObject:sTemp]; }

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• C# WPF XAML Loading

  - by user3713589

  Hi I'd like to inquire on how i can load a WPF Xaml into code so that I can change the values of the attributes of some XAML elements and output it by creating another XAML files. This is so that I can output the same file with values dynamically input by the user. the XamlReader.Load() method cannot be used; it will throw an exception (because they are unable to recognise Window as the root element). I'm using VS2013 and C#.

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• Is there a clever way to pass the key to defaultdict's default_factory?

  - by Paul Oyster

  A class has a constructor which takes one parameter: class C(object): def __init__(self, v): self.v = v ... Somewhere in the code, it is useful for values in a dict to know their keys. I want to use a defaultdict with the key passed to newborn default values: d = defaultdict(lambda : C(here_i_wish_the_key_to_be)) Any suggestions?

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• json retrival failed with jquery .each

  - by user545520

  {"paging": {"pageNum":2,"action":"Next","type":"","availableCacheName":"getAllFunds","selectedCacheName":"","showFrom":101,"showTo":200,"totalRec":289,"pageSize":100}, "Data":[{"sourceCodeId":0,"radio_fund":"individua l","availableFunds":[],"fundId":288,"searchName":[],"fundName":"Asian Equity Fund A Class Income","srcFundGrpId":"PGI","firstElement":0,"las tElement":0,"totalElements":0,"pageList":[],"standardExtract":true}] I have json file with above format with two fileds,one paging and one is Data array. I able to retrieve values of paging,but i am not able to retrieve the values of data array with .each function of jquery. Any suggestions or inputs really appreciated.

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• Writing a collection to Excel

  - by jame

  I'm working in VS2005 and I need the C# syntax write to write collection values in an Excel sheet. I initialize the collection like this: Reports oReports =new Reports();//oReports is a collection Assuming that this collection has values, how would I write them to Excel?

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• Create trigger for auto incerment id and default unix datetime

  - by user1804985

  Any one help me to create a trigger for auto increment fld_id and Unix datetime. My table field is fld_id(int),fld_date(number),fld_value(varchar2). My insert query is insert into table (fld_value)values('xxx'); insert into table (fld_value)values('yyy'); I need the table record like this fld_id fld_date fld_value 1 1354357476 xxx 2 1354357478 yyy Please help me to create this.I can't able to do this..

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