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• Auto-complete editor for SQL statement

  - by Stan

  Is there any plugings or text editor to auto-complete SQL statement? I am using SQL Server Management Studio (ssms) 90% of time, but most of time I have to type SELECT FROM WITH(NOLOCK) WHERE blahblah. Trying to find a more efficient way. Thanks.

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• Cleanest way to get last item from Python iterator

  - by Peter

  What's the best way of getting the last item from an iterator in Python 2.6? For example, say my_iter = iter(range(5)) What is the shortest-code / cleanest way of getting 4 from my_iter? I could do this, but it doesn't seem very efficient: [x for x in my_iter][-1]

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• asp.net mvc html rendering on cs file efficiency

  - by mazhar

  Is it really efficient to render HTML in cs file . i am talking about the efficiency only? Please No any other approach here.

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• In PHP, given an array of arrays, how can I replace all empty values with 0?

  - by stormist

  Example array $myArray[0] = array('23, null, 43, 12'); $myArray[1] = array('null, null, 53, 19'); $myArray[2] = array('12, 13, 14, null'); All nulls should be replaced with 0. I was hoping someone would have an efficient way of doing this, perhaps a built in PHP function that I am unaware of.

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• Drupal 7 front page URL after changing the front page

  - by Freeman

  I have used Configuration|Site Information|Default Front Page to designate node/55 as my front page. How can I create a menu linking to the original front page, i.e. the one with the list of articles? If I link to <front> it goes to node/55. P.S.: I have been able to simulate this by enabling the frontpage view, but, if possible, it would be more efficient to just link to the original front page URL.

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• C++ error message output format

  - by sub

  If I want to trigger an error in my interpreter I call this function: Error( ErrorType type, ErrorSeverity severity, const char* msg, int line ); However, with that I can only output Name error: Undefined variable in line 1 instead of Name error: Undefined variable 'someVariableName' in line 1 I'm working entirely with strings (except for the error messages as they all are constant at the moment), so sprintf won't work. What is the best way to create an efficient error function that can output a constant message combined with a string that describes which object, e.g.: a non-existing variable, triggered the error?

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• How can I get the same strstream functionality now that's deprecated?

  - by chila

  I use to write code like this: void fun(char *buff, unsigned size) { std::strstream str(buff, size); str << "hello world: " << 5; } so I can use stream output over an arbitrary buffer. I've found this technique both efficient (no allocations) and useful (streams!). Now that std::strstream is deprecated, how can I get the same speed+flexibility that I can get with this code?

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• Need a Java map/table with multiple keys to one value. Value is commonly altered

  - by Duncan

  What I need is a collection which allows multiple keys to access a single object. I need to apply frequent alterations to this object. It also must be efficient for 500k+ entries.

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• are there any good timer implementation in perl

  - by Haiyuan Zhang

  I'm looking for good timer implementation in perl. The situation I met is like: I need to keep track of I/O activities of many files and for thoes files keep untouched for enough time a remove action will be taken upon them, so an efficient timer implementation is really vital for the app I'm involved right now. To avoid recreate the wheel, ask you guys for help first.

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• Databases: Migrate data between MS Access DB and MYSQL

  - by Dean

  Hello, I have 2 databases, one is MS Access DB from an old website, and the other one is MYSQL from the new Joomla+VirtueMart based website. I need to migrate existing products from MS Access to MYSQL. I thought of putting both on server and writing SQL queries in MYSQL workbench, untill I have a good script for that, but I'm very new to SQL, so I'd rather avoid that. I there a better way and more efficient for that?

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• Bubbling up events . .

  - by oo

  I have multiple layers in an application and i find myself having to bubble up events to the GUI layer for doing status bar changes, etc . . I find myself having to write repeated coded where each layer simply subscribes to events from the lower layer and then in the call back simply raise an event up the chain. Is there a more efficient way of doing this?

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• How do I select a random record efficiently in MySQL?

  - by user198729

  mysql> EXPLAIN SELECT * FROM urls ORDER BY RAND() LIMIT 1; +----+-------------+-------+------+---------------+------+---------+------+-------+---------------------------------+ | id | select_type | table | type | possible_keys | key | key_len | ref | rows | Extra | +----+-------------+-------+------+---------------+------+---------+------+-------+---------------------------------+ | 1 | SIMPLE | urls | ALL | NULL | NULL | NULL | NULL | 62228 | Using temporary; Using filesort | +----+-------------+-------+------+---------------+------+---------+------+-------+---------------------------------+ The above doesn't qualify as efficient,how should I do it properly?

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• Performance - FunctionCall vs Event vs Action vs Delegate

  - by hwcverwe

  Currently I am using Microsoft Sync Framework to synchronize databases. I need to gather information per record which is inserted/updated/deleted by Microsoft Sync Framework and do something with this information. The sync speed can go over 50.000 records per minute. So that means my additional code need to be very lightweight otherwise it will be a huge performance penalty. Microsoft Sync Framework raises an SyncProgress event for each record. I am subscribed to that code like this: // Assembly1 SyncProvider.SyncProgress += OnSyncProgress; // .... private void OnSyncProgress(object sender, DbSyncProgressEventArgs e) { switch (args.Stage) { case DbSyncStage.ApplyingInserts: // MethodCall/Delegate/Action<>/EventHandler<> => HandleInsertedRecordInformation // Do something with inserted record info break; case DbSyncStage.ApplyingUpdates: // MethodCall/Delegate/Action<>/EventHandler<> => HandleUpdatedRecordInformation // Do something with updated record info break; case DbSyncStage.ApplyingDeletes: // MethodCall/Delegate/Action<>/EventHandler<> => HandleDeletedRecordInformation // Do something with deleted record info break; } } Somewhere else in another assembly I have three methods: // Assembly2 public class SyncInformation { public void HandleInsertedRecordInformation(...) {...} public void HandleUpdatedRecordInformation(...) {...} public void HandleInsertedRecordInformation(...) {...} } Assembly2 has a reference to Assembly1. So Assembly1 does not know anything about the existence of the SyncInformation class which need to handle the gathered information. So I have the following options to trigger this code: use events and subscribe on it in Assembly2 1.1. EventHandler< 1.2. Action< 1.3. Delegates using dependency injection: public class Assembly2.SyncInformation : Assembly1.ISyncInformation Other? I know the performance depends on: OnSyncProgress switch using a method call, delegate, Action< or EventHandler< Implementation of SyncInformation class I currently don't care about the implementation of the SyncInformation class. I am mainly focused on the OnSyncProgress method and how to call the SyncInformation methods. So my questions are: What is the most efficient approach? What is the most in-efficient approach? Is there a better way than using a switch in OnSyncProgress?

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• Possible to lock attribute write access by Doors User?

  - by Philip Nguyen

  Is it possible to programmatically lock certain attributes based on the user? So certain attributes can be written to by User2 and certain attributes cannot be written to by User2. However, User1 may have write access to all attributes. What is the most efficient way of accomplishing this? I have to worry about not taking up too many computational resources, as I would like this to be able to work on quite large modules.

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• Linking two pages using JSP

  - by jamesatha

  So, I am trying to use JSP to create a set of webpages. I want to link two pages so that if the user clicks a button in one page, it will trigger an event in the other page. Is there an efficient way to do this? I was taking a look at creating cookies and/or sessions. Any suggestions on these two methods? Thanks

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• What should main() return in C/C++?

  - by Joel

  What way is the most efficient and why? int main()? void main()? return 1? return 0?

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• SQL: ... WHERE X IN (SELECT Y FROM ...) ...

  - by Craig Johnston

  Is the following the most efficient in SQL to achieve its result: SELECT * FROM Customers WHERE Customer_ID NOT IN (SELECT Cust_ID FROM SUBSCRIBERS) Could some use of joins be better and achieve the same result?

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• jQuery - Why is "live" inefficient? And how can we measure that?

  - by ming yeow

  why do programmers say that "live" is inefficient? So what are the alternative methods to replicating that function that are more efficient? How do we measure the impact of how much it slows things down?

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• Oracle: How to update master with newest row from detail table?

  - by LukLed

  We have two tables: Vehicle: Id, RegistrationNumber, LastAllocationUserName, LastAllocationDate, LastAllocationId Allocations: Id, VehicleId, UserName, Date What is the most efficient (easiest) way to update every row in Vehicle table with newest allocation? In SQL Server I would use UPDATE FROM and join every Vehicle with newest Allocation. Oracle doesn't have UPDATE FROM. How do you do it in Oracle?

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• Rails 2.3: How to turn this SQL statement into a named_scope

  - by randombits

  Having a bit of difficulty figuring out how to create a named_scope from this SQL query: select * from foo where id NOT IN (select foo_id from bar) AND foo.category = ? ORDER BY RAND() LIMIT 1; Category should be variable to change. What's the most efficient way the named_scope can be written for the problem above?

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• Serializing and deserializing data - JavaScript

  - by RadiantHex

  Hi folks, I need to perform a lot of serializing and de-serializing in an application. The data is POST parameters and Cookie headers. Does anyone have any fast libraries to suggest or efficient ways to perform these operations?

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• Generate sample XML from composite hierarchical structure

  - by Jevgenij Nekrasov

  Let's say I have composite hierarchical structure. Each object in the structure has child collection of the same objects. Each object has XPath property, which stores the exact xpath to the element inside XML file. Right now I am trying to create an extension, which can generate XML string from that hierarchical structure, but first I want to make some sort of research what is the most efficient way to do that? ant what is the easiest way?

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• Javascript for loop efficiency

  - by Misha Moroshko

  Is for (var i=0, cols=columns.length; i<cols; i++) { ... } more efficient than for (var i=0; i<columns.length; i++) { ... } ? In the second variant, is columns.length calculated each time the condition i<columns.length is checked ?

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• Should I be using the for-loop construct or the forEach method for iteration?

  - by Dutch

  Is one way more efficient? Are there any limitations in one method versus the other? Thanks for any input you guys can give me ;-)

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• effective functonal sort

  - by sreservoir

  I'm programming a function for a ti-nspire, so I can't use the builtins from inside a function. what is the most generally efficient algorithm for sorting a list of numbers without modifying the list itself? (recursion and list-splitting are fair game, as is general use of math.)

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