Is it possible to Pivot data using LINQ?

Is it possible to Pivot data using LINQ?

I am new to LINQ, but I am wondering if it is possible to use LINQ to pivot data from the following layout:CustID | OrderDate | Qty1 | 1/1/2008 | 1002 | 1/2/2008 | 2001 | 2/2/2008 | 3502 | 2/28/2008 | 2211 | 3/12

Does Python support short-circuiting?

Does Python support short-circuiting?

Does Python support short-circuiting in boolean expressions? 1:Yep, both and and or operators short-circuit -- see the docs. 2:Short-circuiting behavior in operator and, or:Let's first define a useful function to determine if somethin

Socket options SO_REUSEADDR and SO_REUSEPORT, how do they differ? Do they mean the same across all m

Socket options SO_REUSEADDR and SO_REUSEPORT, how do they differ? Do they mean the same across all m

The man pages and programmer documentations for the socket options SO_REUSEADDR and SO_REUSEPORT are different for different operating systems and often highly confusing. Some operating systems don't even have the option SO_REUSEPORT. The W

Setting environment variables in OS X?

Setting environment variables in OS X?

What is the proper way to modify environment variables like PATH in OSX? I've looked on Google a little bit and found 3 different files to edit: /etc/paths~/.profile~/.tcshrcI don't even have some of these files, and I'm pretty sure that .t

From an array of objects, extract value of a property as array

From an array of objects, extract value of a property as array

I have JavaScript object array with the following structure:objArray = [ { foo: 1, bar: 2}, { foo: 3, bar: 4}, { foo: 5, bar: 6} ];I want to extract an array containing the values of key foo, resulting in a value of [ 1, 3, 5 ].I have accom

What does the exclamation mark do before the function?

What does the exclamation mark do before the function?

!function () {}(); 1:JavaScript syntax 101. Here is a function declaration:function foo() {}Note that there's no semicolon: this is just a function declaration. You would need an invocation, foo(), to actually run the function.Now, when

What is the difference between #include  and #include “filename”?

What is the difference between #include and #include “filename”?

In the C and C++ programming languages, what is the difference between using angle brackets and using quotes in an include statement, as follows?#include #include "filename" 1:In practice, the difference is in the location whe

Understanding the WPF Dispatcher.BeginInvoke

Understanding the WPF Dispatcher.BeginInvoke

I was under the impression that the dispatcher will follow the priorityof the operations queued it and execute the operations based on the priorityor the order in which the operation was added to the queue(if same priority)until I was told

Left Join outperforming Inner Join?

Left Join outperforming Inner Join?

I've been profiling some queries in an application I'm working on, and I came across a query that was retrieving more rows than necessary, the result set being trimmed down in the application code.Changing a LEFT JOIN to an INNER JOIN trimm

Difference between running lint via Android Studio menu and gradlew command-line

Difference between running lint via Android Studio menu and gradlew command-line

When I run the following on a command line:./gradlew -lintI get different results than if I choose the following menu option within Android Studio.Analyze->Inspect Code...Can anyone explain this? Is this normal? Should a prudent developer

Can I put a return statement inside a lock

Can I put a return statement inside a lock

Dupe: return statement in a lock procedure: inside or outsideThe title is a little misleading. I know that you can do it, but I'm wondering about the performance implications.consider these two blocks of code. (no error handling)This block

Splitting filenames using system file separator symbol

Splitting filenames using system file separator symbol

I have a complete file path and I want to get the file name.I am using the following instruction:String[] splittedFileName = fileName.split(System.getProperty("file.separator"));String simpleFileName = splittedFileName[splittedFileName.leng

How does Hive choose the number of reducers for a job?

How does Hive choose the number of reducers for a job?

Several places say the default # of reducers in a Hadoop job is 1. You can use the mapred.reduce.tasks symbol to manually set the number of reducers.When I run a Hive job (on Amazon EMR, AMI 2.3.3), it has some number of reducers greater t

data.table - does setkey(…) create an index or physically reorder the rows in a data table?

data.table - does setkey(…) create an index or physically reorder the rows in a data table?

This (very basic) question is the result of an exchange here. The documentation for setkey() states: setkey() sorts a data.table and marks it as sorted. The sorted columns are the key. The key can be any columns in any order. The columns

How can I create a SQLite3 database file using a SQL command file?

How can I create a SQLite3 database file using a SQL command file?

I have a file which contains some SQL commands, something that looks like this:CREATE DATABASE IF NOT EXISTS `db_name`;USE `db_name`;CREATE TABLE IF NOT EXISTS `customers` ( `id` int(10) unsigned NOT NULL, `f_name` varchar(50) DEFAULT NUL

Assign results of globbing to a variable in Bash

Assign results of globbing to a variable in Bash

My colleague, Ryan, came to me with a bug in his Bash script, and I identified the problem with this test:$ mkdir ryan$ mkdir ryan/smells-bad$ FOO=ryan/smells-*$ echo $FOOryan/smells-bad$ touch $FOO/rotten_eggstouch: cannot touch `ryan/smel

How to combine OnClickListener and OnTouchListener for an ImageButton

How to combine OnClickListener and OnTouchListener for an ImageButton

I need to do something when the user clicks the ImageButton I've tried to create a static class that implements both OnClickListener and OnTouchListenerstatic class ClickListenerForScrolling implements OnClickListener, OnTouchListener that

how to use jQuery installed with npm in Express app?

how to use jQuery installed with npm in Express app?

I have a node.js + express app and I installed jQuery with npm.in the app.js file I usedvar jquery = require('jquery');In the html file header I included javascript that uses jQuery and I get `jQuery is not defined'.Is it a metter of order

SELECT ONE Row with the MAX() value on a column

SELECT ONE Row with the MAX() value on a column

I have a pretty simple dataset of monthly newsletters:id | Name | PublishDate | IsActive1 | Newsletter 1 | 10/15/2012 | 12 | Newsletter 2 | 11/06/2012 | 1 3 | Newsletter 3 | 12/15/2012 | 04 | Ne

How do you override the class name in the form_for helper?

How do you override the class name in the form_for helper?

I need to add some class names to my form. I'm using Rails' form_for helper to do this. I've tried adding { :class => 'classname' } to no avail. How can I add classes to this Rails helper output? 1:Try this:form_for @order, :html => {:cl

Facebook API for Android: how to get extended info regarding user`s friends?

Facebook API for Android: how to get extended info regarding user`s friends?

I`m working on small Android application, trying to add Facebook support.Main problem: I can get only basic info regarding user`s friends (id, name).List of app permissions (offline_access is here just for test, will be removed soon): Strin

Rails Active Record: find in conjunction with :order and :group

Rails Active Record: find in conjunction with :order and :group

I have a structure something like this:class User has_many :dongles has_many :licences, :through => :donglesendclass Dongle has_many :licences belongs_to :userendclass Licence belongs_to :dongleendHowever, time passes and the user even

Data Grid in PHP [closed]

Data Grid in PHP [closed]

I want to use data grid in php to fetch data from a store procedure. Please give me some implemented examples. how to use it in my projects.I am using mysql store procedures.Thanks 1:You can use http://phpgrid.com$dg = new C_DataGrid("SE

select union in zf2 query

select union in zf2 query

I am moving my web application from zf1 to zf2 and among the problems I have with sql queries, I can't figure out how to make a union.I used to be able to make $select->union($select1, $select2, $select3) but the Zend\Db\Sql\Select does not

Starting out with an application for Facebook Connect on the iPhone

Starting out with an application for Facebook Connect on the iPhone

I would like to make a button in order for the user to be able to connect and join a group I have created in Facebook. Is this possible with Facebook Connect? Is there a tutorial or something? 1:You can try checking out the newly-updated