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• commands executing in piping in UNIX

  - by Happy Mittal

  when I write a command $ echo date then it prints "date" as it is i.e it doesn't run date program. But when I write $ echo date | wc then correct answer is produced as if date was run. How piping is making difference here ? Please explain.

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• How to change querydef sql programmatically in MS Access

  - by asksuperuser

  I have done Dim qd as querydef set qd = Querydefs("MyQuery") set qd.sql = "..." In debug qd.sql has been updated but the physical MyQuery still contains the old sql. How to update this physical query ?

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• ruby or python more suitable for scripting in all OSes?

  - by fayer

  if i want to script a mini-application (in the Terminal) in mac and windows, which one is preferred: ruby or python? or is there no major difference just a matter of taste? cause i know python definetely is a good scripting language. thanks

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• Shortcut key to restart server in Eclipse

  - by weesilmania

  So Ctrl/Cmd-F11 starts the server, but is there a key to restart the server? I'm developing using app engine and GWT if that makes any difference (I suspect not).

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• string or nsstring with string

  - by joels

  Lets assume myProp is @property (retain) NSString * myProp and synthesized for us.... self.myProp = @"some value";//string literal? self.myProp = [NSString stringWithString:@"some value"]; Is there a difference here? Is the first one a string literal that doesnt get autoreleased or is it just in memory for it's current scope and I dont have to worry about it?

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• Getting An Array Result From A C# Method

  - by Soo

  I am trying to write some code to return an array in C#, but don't know the proper syntax. I think my method is set up correctly, but to set an array to the result of the method is what I'm having difficulty with. Method Declaration: double[,] function(double variable) { ... code ... return array }

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• Can I use an abstract class instead of a private __construct() when creating a singleton in PHP?

  - by Pheter

  When creating a Singleton in PHP, I ensure that it cannot be instantiated by doing the following: class Singleton { private function __construct() {} private function __clone() {} public static function getInstance() {} } However, I realised that defining a class as 'abstract' means that it cannot be instantiated. So is there anything wrong with doing the following instead: abstract class Singleton { public static function getInstance() {} } The second scenario allows me to write fewer lines of code which would be nice. (Not that it actually makes much of a difference.)

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• A question related to UITextfield

  - by user217572

  I have UITextfiled created dynamically by code I want to move keyboard up on click of UITextfield It should be set wether the return button of UITextfield press or not? and also it will be set whenever i move from portrait to landscape or landscape to portrait mode

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• Confused about type conversion in C++

  - by Venkats

  In C++, the following lines have me confused: int temp = (int)(0×00); int temp = (0×00int); What is the difference between those 2 lines?

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• Communication between Activities: Intent or Service: what is faster?

  - by Sebi

  Is there a significant difference in time needed for sending data over a service or by using an intent? Are there general advices when to use service and when to use intents?

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• Using Variables for Class Names in Python?

  - by Sam McAfee

  I want to know how to use variables for objects and function names in Python. In PHP, you can do this: $className = "MyClass"; $newObject = new $className(); How do you do this sort of thing in Python? Or, am I totally not appreciating some fundamental difference with Python, and if so, what is it?

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• Correct to check for a command line flag in bash

  - by BCS

  In the middle of a scrip, I want to check if a given flag was passed on the command line. The following does what I want but seems ugly: if echo $* | grep -e "--flag" -q then echo ">>>> Running with flag" else echo ">>>> Running without flag" fi Is there a better way? Note: I explicitly don't want to list all the flags in a switch/getopt. (And BTW the bodies of the if just set a set of vars)

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• __proto__ of a function

  - by alter

  if I have a class called Person. var Person = function(fname, lname){ this.fname = fname; this.lname = lname; } Person.prototype.mname = "Test"; var p = new Person('Alice','Bob'); Now, p.proto refers to prototype of Person but, when I try to do Person.proto , it points to function(), and Person.constructor points to Function(). can some1 explain what is the difference between function() and Function() and why prototype of a Function() class is a function()

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• PreparedStatement.setString() method without quotes

  - by Slavko

  I'm trying to use a PreparedStatement with code similar to this: SELECT * FROM ? WHERE name = ? Obviously, what happens when I use setString() to set the table and name field is this: SELECT * FROM 'my_table' WHERE name = 'whatever' and the query doesn't work. Is there a way to set the String without quotes so the line looks like this: SELECT * FROM my_table WHERE name = 'whatever' or should I just give it up and use the regular Statement instead (the arguments come from another part of the system, neither of those is entered by a user)?

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• .Net Framework version issue

  - by George2

  Hello everyone, I am using IIS 7.0 + Windows Server 2008 x64. I have installed .Net Framework 3.5 on my machine, but from IIS 7.0 application pool .Net framework settings, I could only set version to v1.0 or v2.0, why I cannot set to version v3.5 -- which is the latest version of .Net framework I installed on my machine? thanks in advance, George

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• I am working with Visual Studio 2008. Actually there is References folder missing

  - by Azhar

  I am working with Visual Studio 2008. Actually there is References folder missing in its solution explorer. When I create a New web Application it has References folder but when I add new .aspx file it also adds .aspx.designer.cs file with it and its does not show master page option in add dialogue. but in the old web application it shows the master page option where master page file is already added. whats the difference between these two solutions.

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• Perl Regular Expression [] for <>

  - by bmucklow

  So I am trying to read an XML file into a string in Perl and send it as part of a SOAP message. I know this is not ideal as there are methods for SOAP sending files, however, I am limited to having to use the SOAP that is set up, and it is not set up for sending with file support. Therefore I need to parse out the markup tags < and replace them with []. What is the best way to do this?

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• Android Camera exit rotate

  - by John

  I am first time to write a camera app. At program, I am using setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE) and android:screenOrientation="landscape" in Manifest to set the landscape screen. My problem is when use System.exit() or Intent. The screen will change to portrait automatically. But in my program, it haven't set any screen orientation again. How can I prevent this problem? Thanks!!

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• Emacs bulk indent for Python

  - by Vernon

  Working with Python in Emacs if I want to add a try/catch to a block of code, I often find that I am having to indent the whole block, line by line. In Emacs, how do you indent the whole block at once. I am not an experienced Emacs user, but just find it is the best tool for working through ssh. I am using Emacs on the command line(Ubuntu), not as a gui, if that makes any difference.

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• How does one validate an entire site?

  - by American Yak

  I realize there's the W3C validator, which works great for one page. There's also the perl install they provide, but it seems to not work on a Mac or it's buggy. Given that 1) I have an entire set of local files How do I a) Validate the entire set b) do it behind a firewall c) do it simply without installing anything on my computer? (i.e., is there a web service?) Or is this just futile?

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• Public Access level to the pages in Joomla1.5

  - by Aruna

  Hi, I am working on Joomla 1.5 . i have a link to an article whose access level is set to Public but still its asking for login for that page since we have set tat to some access level previously.. Please give some suggestions

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• Usage history for Windows 7

  - by Lajos Arpad

  Hello, a relative of mine has a problem. She's working at a company, using Windows 7 and can't set a password because if she's not there her boss might want to use some of her data, but she has suspicions that there is a colleague who spies on her files, because there is no password set for her computer. Does anybody know how can somebody view some kind of history of when was the computer turned on before and what files were opened/runned? Thanksin advance for your answers.

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• Drop all foreign keys in a table

  - by trnTash

  I had this script which worked in sql server 2005 -- t-sql scriptlet to drop all constraints on a table DECLARE @database nvarchar(50) DECLARE @table nvarchar(50) set @database = 'dotnetnuke' set @table = 'tabs' DECLARE @sql nvarchar(255) WHILE EXISTS(select * from INFORMATION_SCHEMA.TABLE_CONSTRAINTS where constraint_catalog = @database and table_name = @table) BEGIN select @sql = 'ALTER TABLE ' + @table + ' DROP CONSTRAINT ' + CONSTRAINT_NAME from INFORMATION_SCHEMA.TABLE_CONSTRAINTS where constraint_catalog = @database and table_name = @table exec sp_executesql @sql END It does not work in SQL Server 2008. How can I easily drop all foreign key constraints for a certain table? Does anyone have a better script?

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• setting up routing for the first time

  - by user334017

  I'm trying to set up url routing on my server for the first time. I'm fairly sure that mod_rewrite is enabled. Are there any other configurations I need to change or things to set up? Should the routing.yml file just automatically get read?

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• Why would you need a slash at the end of a URL?

  - by Daniel

  Is there a difference between these URLs in regards to having slashes at the end of the URL? https://drchrono.com/about_us https://drchrono.com/about_us/ Do web frameworks and web servers (e.g. Apache, Nginx, Django) handle these requests differently?

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