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Why are ToLookup and GroupBy different?
...hen you call GroupBy on such an object?
A query object is built; end of story.
When that query object is enumerated then the analysis of the table is done on the database server and the grouped results are sent back on demand a few at a time.
Logically they are the same thing but the performance ...
Difference between double and single curly brace in angular JS?
I am new to this angular world, i am bit confused with the use of double curly braces {{}}
and single curly braces{} or sometime no curly brace is used to include the expression like in the directives
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How to convert string to boolean php
...ve a value that's considered "empty" by PHP (taken from the documentation for empty):
"" (an empty string);
"0" (0 as a string)
If you need to set a boolean based on the text value of a string, then you'll need to check for the presence or otherwise of that value.
$test_mode_mail = $string ===...
When & why to use delegates? [duplicate]
...agree with everything that is said already, just trying to put some other words on it.
A delegate can be seen as a placeholder for a/some method(s).
By defining a delegate, you are saying to the user of your class, "Please feel free to assign, any method that matches this signature, to the delegat...
Why does TestInitialize get fired for every test in my Visual Studio unit tests?
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TestInitialize and TestCleanup are ran before and after each test, this is to ensure that no tests are coupled.
If you want to run methods before and after ALL tests, decorate relevant methods with the ClassInitialize and ClassCleanup attributes.
Relevant informati...
What are Bearer Tokens and token_type in OAuth 2?
I'm trying to implement the Resource Owner & Password Credentials flow from the OAuth 2 spec. I'm having trouble understanding the token_type value that gets sent back with a valid response. In the spec all the examples show "token_type":"example" but says it should be
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How do I merge a specific commit from one branch into another in Git?
... single commit (from whatever branch) and, essentially, rebase it in your working branch.
Chapter 5 of the Pro Git book explains it better than I can, complete with diagrams and such. (The chapter on Rebasing is also good reading.)
Lastly, there are some good comments on the cherry-picking vs merg...
Why does Ruby 1.9.2 remove “.” from LOAD_PATH, and what's the alternative?
The latest changesets to Ruby 1.9.2 no longer make the current directory . part of your LOAD_PATH . I have a non-trivial number of Rakefiles that assume that . is part of the LOAD_PATH , so this broke them (they reported "no such file to load" for all require statements that based off the proj...
UIStatusBarStyle PreferredStatusBarStyle does not work on iOS 7
In my iPhone application built with Xcode 5 for iOS 7 I set UIViewControllerBasedStatusBarAppearance=YES in info.plist , and in my ViewController I have this code:
...
How to handle command-line arguments in PowerShell
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You are reinventing the wheel. Normal PowerShell scripts have parameters starting with -, like script.ps1 -server http://devserver
Then you handle them in param section in the beginning of the file.
You can also assign default values to your params, read ...