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• &nbsp; displays a tiny line.

  - by Kyle Sevenoaks

  Hi, when I make &nbsp; in my site, it displays a tiny line, which can be hidden on some elements because I'm usually using them on CSS buttons, but I have an if statement that says if this show the result if not show a non breaking space. How do you reset the &nbsp; to display nothing? Thanks.

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• How do I combine two rows of same part, but add quantities?

  - by Tom

  I have table "PICKITEM" PARTID QTY A 1 A 3 B 11 C 8 D 5 D 3 I need a select statement that will return one line for like PARTIDs and add the qty field to together, yet also return the rest of the lines in the table as is PARTID QTY A 4 B 11 C 8 D 8 Probably a newb question, but I am new to SQL syntax and queries. Any help in getting me on the right path would be appreciated!

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• Exclude some ids from result in Rails ActiveRecord

  - by Beer Brother

  I have following statement for query articles from some sections Article.all(:joins => :sections, :conditions => { :sections =>{ :id => [3, 4, 6, 7, 8, 9] }, :id_not_in => @some_ids }, :limit => 4) Variable @some_ids is array with ids of articles wich must be excluded from result.

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• Using 'this': where is good and where is not [closed]

  - by abatishchev

  I like to use 'this' statement for all non-local variables: for properties, for class variables, etc. I do this for code easy reading, easy understanding where from this variable has got. object someVar; object SomeProperty { get; set } void SomeMethod(object arg1, object arg2) { this.SomeProperty = arg1; this.someVar = arg2; } How do you think, what is proper way to use 'this'?

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• C# - Check a bool for a value and then flip it

  - by halivingston

  for (int i = 0; i < X; i++) myitem = (checkedDB) ? dirtyItem : cleanItem; I wanted to know if there's a way of flipping checkedDB in the same statement, i.e. the next iteration checkedDB is the opposite of it's value, so like XORing.

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• mySQL JOIN wont return results with 0 count

  - by MPC

  SELECT categories.*, COUNT(categoryID) AS kritCount FROM categories AS categories LEFT JOIN krits ON categories.id = categoryID WHERE (krits.approved = '1') GROUP BY categories.id So this works great except that it does not return a category that has a 0 count of krits in the category. It will if I remove the WHERE statement but I need the WHERE to only select the krits where the field approved = 1

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• Randomly selecting a limited number of records with two conditions in MySQL

  - by andyashton

  I have a MySQL table with a column called "priority". The column can have two values: high or low. I want to select 8 records from the table at random, but I want 6 of them to be high priority, and 2 of them to be low priority. If possibly, I would like to do it in one SQL statement. Is there any way to do two LIMITS in one query based on this kind of criteria?

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• Determining whether jQuery doesn't find any element

  - by Bardock

  Hi, I'm using jQuery's selectors, especially id selector: $("#elementId")... How should I determine whether jQuery has found the element or not? Even If the element with the specified id doesn't exist the next statement give me: [object Object] alert($("#idThatDoesnotexist"));

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• Handling macro redefinition without modifying .h files ... C / C++ language

  - by user310119

  Background: Let assume that I have two header files a.h and b.h. a.h contains: #define VAR 1 b.h contains: #define VAR 2 Note: The name of both of the macro is same. Let say I have some file myFile.c which includes both of the header files i.e. a.h and b.h. When I try to access VAR, I get a redefinition error of VAR. In order to resolve this problem, I inserted #ifndef VAR statement in both a.h and b.h files to prevent this error. a.h file becomes #ifndef VAR #define VAR 1 #endif b.h file becomes #ifndef VAR #define VAR 2 #endif Note: The header file can contain multiple macros, not just one macro. Problem: Let's assume that a.h and b.h files are obtained from third party library. These files don't contain #ifndef VAR statement. I am not allowed to change their header files. Can I resolve macro 'VAR' redefinition error in myFile.c or myFile.cpp file which uses VAR macro? I know I #undef VAR can be used to undefine a macro VAR. How can I selectively include VAR later in my program? i.e. on line 10 of myFile.c code I should be able to refer to VAR definition from a.h file, on line 15 of my code I should be able to refer to VAR from b.h file and on line 18 again I should be able to refer to VAR from a.h file. In short, am I able to do macro polymorphism ? Given a name of header file, it should refer to macro definition present in that file. I thought of using namespace trick to resolve an issue. Define first header file in namespace first and second header file in namespace second. I tried defining two namespaces. First namespace contains #include a.h and second namespace contains b.h. However, namespace trick does not work with macro. When I tried to access firstns::VAR, compiler reports an error message. Can you please suggest some way?

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• Catching TransactionRolledbackLocalException in Java

  - by user271858

  I receive javax.ejb.TransactionRolledbackLocalException in Websphere 7 from the container and I wonder how is it possible to catch this exception? I have a timeout set in Websphere and get this message after this time. I run session beans. I am trying to find what SQl statement was the cause of this exception. Where can i find that?

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• Doubt in Conditional inclusion

  - by Philando Gullible

  This is actually extracted from my module (Pre-processor in C) The conditional expression could contain any C operator except for the assignment operators,increment, and decrement operators. I am not sure if I am getting this statement or not since I tried using this and it worked.Also for other manipulation a probable work around would be to simply declare macro or function inside the conditional expression,something like this to be precise. Also I don't understand what is the rationale behind this rule. Could somebody explain? Thanks

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• if action class method throw exception where is the handler and how to get control after that....???

  - by rozer

  If action class method signature have throws statement and in that method any exceoption occurs then how the flow will move. then suppose we need to take contol of flow and want to show our jsp , what will be the steps please help out.....

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• How to return a value based on the type of the generic T

  - by Blankman

  I have a method like: public T Get<T>(string key) { } Now say I want to return "hello" if the type is a string, and 110011 if it is type int. how can I do that? typeof(T) doesn't seem to work. I ideally want to do a switch statement, and return something based on the Type of the generic (string/int/long/etc). Is this possible?

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• In C#, how do I know which exceptions to catch?

  - by user327918

  I've gotten in the habit of using a general catch statement and I handle those exceptions in a general manner. Is this bad practice? If so, how do I know which specific exceptions could be thrown and which ones do I catch?

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• How to check the existence of a row in SQLite with Python?

  - by fx

  I have the cursor with the query statement as follows: cursor.execute("select rowid from components where name = ?", (name,)) I want to check for the existence of the components: name and return to a python variable. How do I do that?

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• how to run a query from the VBA Editor window in ACCESS?

  - by every_answer_gets_a_point

  i would like to do something like this: DoCmd.OpenQuery "select * from some_table;" how would i do this? please keep in mind i don't want create a new query, save it, and run it, i just want to type the select statement in the vba code and run it.

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• C++ switch table performance

  - by asap

  Does the time taken by a switch statement (or jump table in compiled form) to "decide" where to jump rise by the number of casees it contains?

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• function_exists php

  - by user527800

  Hi all I'm trying to write a function that could receive it's second arg a name of a function. In order to validate function's name (that will be used in an eval statement) I use function_exists such as: if(function_exists($type)){ $toEval= $type.'(\''.$file.'\');'; }else{ But if the arg sent is include or require (with 'once' variations) this code fails (function_exists returns false). How could this be fixed? Thanks, Alex

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• How I can set a column value for all my rows that already exist in the database with some sort of my

  - by zeckdude

  I want to set the value of the column 'character_hold' to 'no' for all my rows in my MYSQL database. Is there a SQL statement I can use in phpmyadmin to set them all to 'no'?

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• What is wrong in this code?

  - by nepc

  The is a very simple echo statement but I can't solve it? echo '"What is your name?'";

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• How to check the existence of a row in SQLite?

  - by fx

  I have the cursor with the query statement as follows: cursor.execute("select rowid from components where name = ?", (name,)) I want to check for the existence of the components: name and return to a python variable. How do I do that?

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• want to extend from java.sql.ResultSet

  - by dora

  hi, i would like to create myRecordSet object that extends java.sql.ResultSet and to implement a method that returns UTC date from sql statement. how can i extend from java.sql.ResultSet, i need an example 10X

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• Javascript switch vs. if...else if...else

  - by John Hartsock

  Guys I have a couple of questions: Is there a preformance difference in Javascript between a switch statement and an if...else if....else? If so why? Is the behavior of switch and if...else if...else different across browsers? (FireFox, IE, Chrome, Opera, Safari)

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• MySQL: How to do a conditional update?

  - by Tom

  Hi, I'm trying to a create an update statement along the following lines: TABLE car: id | owner_id | type | status An owner can have multiple cars. UPDATE car c SET c.type = 1 WHERE c.owner_id IN ($ids) AND c.status = [1 IF IT EXISTS, ELSE 0] $ids is reasonably small (under 50 values). It seems simple but I can't seem to get my head around it because I can't use a SELECT subquery with an UPDATE to the same table. Anyone? Thanks

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• Ternary operators in C#

  - by pm_2

  With the ternary operator, it is possible to do something like the following (assuming Func1() and Func2() return an int: int x = (x == y) ? Func1() : Func2(); However, is there any way to do the same thing, without returning a value? For example, something like (assuming Func1() and Func2() return void): (x == y) ? Func1() : Func2(); I realise this could be accomplished using an if statement, I just wondered if there was a way to do it like this.

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