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• Python references

  - by hekevintran

  Can someone explain why the example with integers results in different values for x and y and the example with the list results in x and y being the same object? x = 42 y = x x = x + 1 print x # 43 print y # 42 x = [ 1, 2, 3 ] y = x x[0] = 4 print x # [4, 2, 3] print y # [4, 2, 3] x is y # True

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• MySQL Order By not using ASC or DESC

  - by Spencer Carnage

  I have a column using IDs that I want to sort by. It has ID values from 1 to 3. However, instead of just using ASC of DESC, I want to do a custom sort by 2, 3, 1. How do I make this happen?

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• CSV is not creating format problems with integer value when generated through SSIS package

  - by paranjai

  Hi I am trying to generate a CSV file from DB Query as source one of my column is having datatype nvarchar(50) with values as "01050007029604301001" After the export when the csv file is viewed using Excel the value appears as "1.0500E18" . How can i stop this . Please suggest

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• In Perl, why do I need to @b = @{dclone(\@a)}? Why can't I just @b = dclone(\@a)?

  - by synapz

  I have an array of various things including scalars and arrays. I want to make a copy of it, and tried the following: @b = dclone(\@a) but then when I try to read one of the scalar values from b, I get nothing back. Everything appears to work when I copy it this way, though: @b = @{dclone(\@a)} What is the reason?

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• Type hinting for functions in Clojure

  - by mikera

  I'm trying to resolve a reflection warning in Clojure that seems to result from the lack of type inference on function return values that are normal Java objects. Trivial example code that demonstrates the issue: (set! *warn-on-reflection* true) (defn foo [#^Integer x] (+ 3 x)) (.equals (foo 2) (foo 2)) => Reflection warning, NO_SOURCE_PATH:10 - call to equals can't be resolved. true What is the best way to solve this? Can this be done with type hints?

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• apex button to call a page in another application

  - by jaykio77

  I have a workspace with which I have 5 applications based on same schema. Now I want to have a main page from where I could call main pages of all these applications. I used this syntax to call home page in another application but to no avail f?p=4000:4150:&APP_SESSION. Where 4000:4150 are the values for the application and the page I want to display. Please let me know where am I making mistake.

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• Equivalent of Oracle’s RowID in MySQL

  - by echo

  is there an equivalent of oracle's rowid in mysql? delete from my_table where rowid not in (select max(rowid) from my_table group by field1,field2) I want to make a mysql equivalent of this query!!! What i'm trying to do is, : The my_table has no primary key.. i'm trying to delete the duplicate values and impose a primary key (composite of field1, field2)..!!

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• How to store a function for later evaluation?

  - by gcc

  A user will provide a function with three unknown values: a, b and c. For example: sin(a+b)+ln(5)*(log(ab)-32/sqrt(abc)) How should I store the function so as to best be able to work with it?

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• Inserting a null value into the database.

  - by J Harley

  Good Morning, Say I have an insert statement: Insert INTO tblTest (fieldOne,FieldTwo,fieldThree) VALUES ('valueOne','valueTwo','null') This statement doesn't seem to want to insert a null value into the database... I have also tried to insert the word "nothing". Has anyone any ideas how to make this work? I am using SQL server 2005.

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• SQL OUTER JOIN with NEWID to generate random data for each row

  - by CL4NCY

  Hi, I want to generate some test data so for each row in a table I want to insert 10 random rows in another, see below: INSERT INTO CarFeatures (carID, featureID) SELECT C.ID, F.ID FROM dbo.Cars AS C OUTER APPLY ( SELECT TOP 10 ID FROM dbo.Features ORDER BY NEWID() ) AS F Only trouble is this returns the same values for each row. How do I order them randomly?

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• C# 4: how to in-line detect for nulls?

  - by Dr. Zim

  In C# 4, wasn't there a short cut for checking for null values like so: if( myobject?.myproperty?.myotherproperty?.value != null ) The value would return null and not throw an exception. Anyone have a link to how to use it or at least the syntax?

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• Java image with double value pixel

  - by marionmaiden

  Actually I'm working with BufferedImages, that provide me pixel values in int type. Do you know a Java object to represent an image that the pixel value in double or float type?

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• How to get this done in mysql?

  - by bala3569

  Consider i have a registartion table and there is field prefLocationId and it contains value like this 1,2,3,2,1,4 and so many.... And i have a table prefLocation which looks like this Id LocationName 1 Chennai 2 Mumbai 3 Kolkatta 4 Delhi and i want to select record of users and show values like Chennai,Mumbai,Kolkatta,Mumbai,Chennai,Delhi and so on...

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• how to use sort function the same way as max or min in mathematica

  - by Qiang Li

  Please take a look at the following code: Sort[{1, y, x}, Greater] Max[{1, x, y}] x = 1 y = 2 Sort[{1, y, x}, Greater] Max[{1, x, y}] It is interesting to note that the first Sort always produce a definite result while the first Max does not, even when Greater is specified. Note I have not given any numerical values for x and y. Why is this and how can I have a Sort function behave the same way as the Max (or Min) function? Thanks!

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• MySql query BETWEEN two Strings sometimes doesn't work

  - by bucabay

  I have a mysql query where a subquery is: BETWEEN '5.00' AND '10.00' And this returns no results. However when I use Floats or Ints: BETWEEN 5 and 10 it works The BETWEEN query also works for other values AS strings, but just not for 5 and 10. EG: BETWEEN '4' AND '5' works. How could this be?

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• problem with selector in iphone?

  - by abhiTouchmagic

  i am having a application where i am generating the uibuttons dynamically want to use same @selector...Now as sooon as event is generated i wanna check for values and pass it to thtroughthat selector how can i implement this code? can anyone tell me a tutorial sort where buttons are dynamically generated and check for particular button click is depicted? Plz help...

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• How to insert the last id from a table into another table in MySQL?

  - by James

  I want to take the id of the most recent item in a database, increment it by one and insert that new id in to another table. I tried: $select = mysql_query("SELECT id FROM tableName ORDER BY id DESC"); while ($return = mysql_fetch_assoc($select)) { $id = $return['id']; $newId = $id++; } mysql_query("INSERT INTO anotherTable (someColumn) VALUES ('$newId')"); But it didn't work. How can this be done?

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• criticle join query mysql

  - by Bharanikumar

  i have table country and having country name and country code, i have customer table having countomer mobile number like customer_mobile field values like 0044-123456798 , 0024-582654753 , 012-52686145 , i want to populate my country oce into combo, that country name should in customer table which country code count is high that country name should come in the dropdown list top , How to write the join query... Thanks

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• C# stop property change at runtime

  - by petebob796

  I have been trying to build a user control with some custom properties set in the designer. However the control involves some interop code and settings which shouldn't be adjusted at runtime. Is there a way to stop the values being changed after they have been initially set by the designer code?

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• polymorphism alternative for MySQL stored procedures

  - by zombiegx

  I'm porting some stored procedures from Informix to MySQL, but I have two stored procedures on Informix that have same name and different parameters. In MySQL, I can't create two SP with the same name, and also can't create a SP with default values in parameters. so, do someone out there know any hackery or black magic that may help me solve this problem? thanks.

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• How can i use a variable created in a objective c Void function?

  - by James

  Im trying to get the lat and long values generated in a void function and use them within another function. Any help grateful. (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation { float latDeg = newLocation.coordinate.latitude; NSLog(@"Lat: %g", latDeg); float longDeg = newLocation.coordinate.longitude; NSLog(@"Lat: %g", longDeg); } I want to use the latDeg and longDeg variables.

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• how to create table which has a column from another table in mySQL

  - by dexter

  i want to create a table : products which looks like (these are columns name) Id Name Category-id Description now Category-id column gets the values from another table category which looks like Id Name Description now category.Id is used in products.Category-id how to do this in mySQL

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• String literals and escape characters in postgresql

  - by rjohnston

  Attempting to insert an escape character into a table results in a warning. For example: create table EscapeTest (text varchar(50)); insert into EscapeTest (text) values ('This is the first part \n And this is the second'); Produces the warning: WARNING: nonstandard use of escape in a string literal (Using PSQL 8.2) Anyone know how to get around this?

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• type casting in mysql

  - by muralikalpana

  i have passportno(varchar) in database. i am entering values like this 001,002,003. and i want to display like sorting order. now i wrote query like this "select * from passport_registration where status=1 ORDER BY passportno" then displaying output like this......077,088,099,100,1000,1001,1009,101,1010 i want to diplay sort order. how to do?

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• Can I declare the same value for two attributes at once

  - by graphicdivine

  For example, for accessibility reasons I want my onfocus and onmouseover to have identical values. For the sake of maintainability I want to declare this once only. What I'd like to be able to do is this: <a onmouseover,onfocus="assist('hello');">linktext</a> But, of course, that would be too easy, and doesn't work. What's the best way I can achieve this DRYing out of my tags?

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