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• procedure that swaps the bytes (low/high) of a Word variable

  - by Altar

  Hi. I have this procedure that swaps the bytes (low/high) of a Word variable (It does the same stuff as System.Swap function). The procedure works when the compiler optimization is OFF but not when it is ON. Can anybody help me with this? { UNSAFE! IT IS NOW WORKING WHEN COMPILER OPTIMIZATION IS ON ! } procedure SwapWord_NotWorking(VAR TwoBytes: word); asm Mov EBX, TwoBytes Mov AX, [EBX] XCHG AL,AH Mov [EBX], AX end;

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• Does variable name length matter for performance C#?

  - by MadBoy

  I've been wondering if using long descriptive variable names in WinForms C# matters for performance? I'm asking this question since in AutoIt v3 (interpreted language) it was brought up that having variables with short names like aa instead of veryLongVariableName is much much faster (when program is bigger then 5 liner). I'm wondering if it's the same in C#?

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• SSIS - Setting a Dataflow Derived Column value from a variable

  - by Jason W

  I have an ID in a package variable that I need to add as a column (with each row having that package variablevalue) in a Dataflow. Is there a way to do this with only the Derived Column? I know i can using the Derived Column to make a new column and then set the value using a Script Component, but that seems inefficient.

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• Hot to remove text from variable? (php)

  - by Glister

  I have a variable $link_item, it's used with echo and gives the strings like <span class="name">Google</span>http://google.com How to remove "<span class="name">Google</span>" from string? It should give just "http://google.com". Heard it can be done with regex(), please help.

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• Variable name as a string in Javascript

  - by fish potato

  Is there a way to get a variable name as a string in Javascript? (like NSStringFromSelector in Cocoa) I would like to do like this: var myFirstName = 'John'; alert(variablesName(myFirstName) + ":" + myFirstName); --> myFirstName:John -- added I'm trying to connect a browser and another program using JavaScript. I would like to send instance names from a browser to another program for callback method.

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• text from a file turned into a variable?

  - by b3y4z1d

  If I made a program that stores strings on a text file using the "list"-function(#include ), and then I want to copy all of the text from that file and call it something(so I can tell the program to type in all of the text I copied somewhere by using that one variable to refer to the text), do I use a string,double,int or what do I declare that chunk of text as? I'm making the program using c++ in a simple console application.

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• extern and static variable storage ???

  - by Riyaz

  when will memory created for extern and static variable. Is it in stack or heap. Since its life time is till the program end, it cant be in stack it must be in heap. But size of the heap will known only at the run time. So somewhat confusion here ......

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• Read contents of a local file into a variable in Rails

  - by Steven Xu

  All I want to do is get all the content from a local file and store it in a variable. How? File.read(@icon.full_filename).each {|l| r += l} only gives me a part of it. In PHP, I just used file_get_contents. Thanks!

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• VBA Variable from msgbox to report

  - by user1789785

  I have a macro which runs several Sql queries. One of these queries is run based off a date which in input in a msgbox within the macro (only companies after the date entered are generated). Is it possible to put the value entered in the msgbox at the time the macro is run in a table by itself? (my ultimate goal is to put the value on a report to indicate that values displayed are after the following date: variable) Thanks

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• Pass a variable to new page

  - by Anon

  I am trying to pass a variable from one page, load another and enter that information. something Like this: When 127.0.0.1/test.html&ID=1234 location.href = "127.0.0.1/newpage.html" if (location.href == newpage.html){ var e = document.GetElementById("Loginbx"); e.Value = ID } I don't have access to modify 127.0.0.1/test.html nor newpage.html but would like to pass variables to them from another. Is this possible?

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• Cygwin environment variable case

  - by Michael

  For some reason on one pc, when variable names are going from batch file to Cygwin environment, they are capitalizing. On other the case stay intact. @set aa=bb %BASH% --login -c "set" so the output in one case will show AA=bb in other case aa=bb How to control the case of the exported variables?

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• Greasemonkey script to change a variable in the URL

  - by Sudhir

  On some pages in Google Analytics, there is a variable shown in the URL. The default value is 10. The URL always looks something like this: ...&trows=10&... is there a way to change that to trows=100, so that the number of rows displayed by default is 100? Thanks

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• Usage of std::string.append causes "Stack around the variable 'result' was corrupted"

  - by Yan Cheng CHEOK

  I have the following code : std::string Utils::get() { std::string result; result.append(1, 'x'); result.append(1, 'x'); result.append(1, 'x'); return result; } I expect 'xxx' to be returned. However, when I run under debug mode, I get the warning "Stack around the variable 'result' was corrupted" Am I using append function the wrong way?

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• Can I have variable (linear gradient) transparency for a Flex UI Container

  - by Flexer

  Hello, I would like to have a variable transparency for a Flex UI container. The upper half of the container should be completely opaque but the lower part of it should smoothly change from completely opaque to completely transparent. Any ideas how to achieve it? Thanks

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• Set time part of datetime variable to 18:00

  - by maxt3r

  Hi. I need to set datetime variable to two days from now but it's time part must be 18:00. For example if i call getdate() now i'll get 2010-05-17 13:18:07.260. I need to set it to 2010-05-19 18:00:00.000. Does anybody have a good snippet for that or any ideas how to do it right?

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• how to declare variable in PostgreSQL

  - by user307880

  I try to declare a variable in a code like this, but it's doesn't work. Can you tell me what's the problem? ERROR: syntax error at or near "VARCHAR" LINE 2: p_country VARCHAR; DECLARE p_country VARCHAR; p_country : = ''; SELECT p_country;

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• Getting a variable from an object with a string in PHP

  - by Josh K

  I have a Persons object. It has a variable name accessible by saying $p = new Person('John'); echo $p->name; Now I have a string. $name = 'name'; I need to get $p->name using $p and $name. Something like echo $p->[$name];

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• SQL Server: Declaring variable type based on a column type

  - by Bernard Dy

  In Oracle's PL-SQL, you can declare a variable and define its type based on a table column: declare var1 table.column%TYPE; Is it possible to do something similar in MS SQL Server? I searched but could not find a duplicate for this question. If there is one, please let me know and I'll refer to it and delete this.

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• running query and putting result into a variable ACCESS

  - by every_answer_gets_a_point

  i am running a query from vba editor access: "select max(somerow) from sometable" i want to put the result of this query into a variable. how do i do it?

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• Java Build Path - Add External JARs' and Add Variable

  - by Lakshman

  What is the difference between Java Build Path - Add External JARs Button and Add Variable Button Functionality, Why its required. Please explain in detail.

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• Accessing property of object vs variable in javascript

  - by Samuel

  Why when I try to access a variable that don't exist, javascript throw an exception but when I try to access a property that don't exist in an object, javascript returns an undefined object? For example, this case returns an undefined object: function Foo(){ console.log(this.bar); } Foo(); But, in this other example, javascript throw an exception: function Foo(){ console.log(bar); } Foo(); ReferenceError: bar is not defined

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• The question about the 89c52 Serial ports receive Variable-length strings

  - by shuil

  The strings` length is less than 30 but Variable. I use the following code, but the SComAssistant only can receive two Character. ================================================================= code url http://fayaa.com/code/view/11190/

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• Query on the scope of local variables in C

  - by darkie15

  All, Consider the following code: void func(void) { int a; printf ("%d", a); } int main(int argc, char **argv) { int a = 3; func(); printf("%d", a); } According to my understanding, the output should be: <junk value><3> Can anyone please confirm my understanding? My basic query is, does the compiler refer to the outer scope for a variable that has been declared but not defined? Regards, darkie

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• Error in jsp program calling servlet variable

  - by megala

  hi i created one webapplication project.It containe one servlet file jsp file. I created one string variable in servlet and assign some value like /* sampleservlet.java *******/ String s=" WELCOME" My constraints I want to display the string in my jsp file.so that i import the servlet file inj jsp and i created object as ---call--- jsp file contain following coding <%sampleservlet call ;% <%call.s% But it shows error how to solve this?

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• CodeIgniter - accessing $config variable in view

  - by PHP thinker

  Pretty often I need to access config variables in views. I know I can pass them from controller to load-view(). But it seems excessive to do it explicitly. Is there some way or trick to access $config variable from CI views without disturbing controllers with spare code?

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