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Linq: GroupBy, Sum and Count
...() and SingleOrDefault()sees that there are more than 1 object in a result set or as a result of the provided argument, it will throw an exception. On usage, you use the former when you only want, maybe a sample of a series and the other objects are not important to you, whereas you use the latter i...
Right way to initialize an OrderedDict using its constructor such that it retains order of initial d
...provided (i.e. source from a list it will be deterministic, sourced from a set or dict not so much).
How does one go about verifying if OrderedDict actually maintains an order. Since a dict has an unpredictable order, what if my test vectors luckily has the same initial order as the unpredictabl...
How to Diff between local uncommitted changes and origin
...art your diff app automatically for each changed file.
PS:
If you did not set a diff app, you can do it like in the example below(I use Winmerge):
git config --global merge.tool winmerge
git config --replace --global mergetool.winmerge.cmd "\"C:\Program Files (x86)\WinMerge\WinMergeU.exe\" -e -u -...
.htaccess mod_rewrite - how to exclude directory from rewrite rule
...ere is only one thing you should have in mind: activating .htaccess files (setting AllowOverride to anything else than None in apache config) forces apache to search for .htaccess on every request. so if you have a high frequented website/webserver that filesystem/harddisk access could have an imens...
Increment a database field by 1
...ting an entry:
A simple increment should do the trick.
UPDATE mytable
SET logins = logins + 1
WHERE id = 12
Insert new row, or Update if already present:
If you would like to update a previously existing row, or insert it if it doesn't already exist, you can use the REPLACE syntax or the ...
What is a StoryBoard ID and how can i use this?
...recently started in Xcode 4.5. I saw for every viewController that i could set some identity variables including the storyboard ID. What is this and how can i use it?
...
Failed to load c++ bson extension
A total node noob here. I've been trying to set up a sample node app but the following error keeps popping up every time I try to run:
...
First letter capitalization for EditText
...
Statically (i.e. in your layout XML file): set android:inputType="textCapSentences" on your EditText.
Programmatically: you have to include InputType.TYPE_CLASS_TEXT in the InputType of the EditText, e.g.
EditText editor = new EditText(this);
editor.setInputType(In...
Is there a “standard” format for command line/shell help text?
...alue
[Text inside square brackets]
Optional items
{Text inside braces}
Set of required items; choose one
Vertical bar {a|b}
Separator for mutually exclusive items; choose one
Ellipsis <file> …
Items that can be repeated
...
How to view the Folder and Files in GAC?
... HKLM\Software\Microsoft\Fusion
Add a DWORD called DisableCacheViewer and set the value to 1.
For a temporary view, you can substitute a drive for the folder path, which strips away the special directory properties.
Launch a Command Prompt at your account's privilege level.
If you elevate you...