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Group by with multiple columns using lambda
...private class CustomerGroupingKey
{
public CustomerGroupingKey(string country, string gender)
{
Country = country;
Gender = gender;
}
public string Country { get; }
public string Gender { get; }
}
...
Is this the right way to clean-up Fragment back stack when leaving a deeply nested stack?
...ame for your initial back stack state and use
FragmentManager.popBackStack(String name,
FragmentManager.POP_BACK_STACK_INCLUSIVE).
Use FragmentManager.getBackStackEntryCount()/getBackStackEntryAt().getId()
to retrieve the ID of the first entry on the back stack, and
FragmentManager.popBackStack(int ...
What are .dex files in Android?
...n in the Java programming language.
Dex file format:
1. File Header
2. String Table
3. Class List
4. Field Table
5. Method Table
6. Class Definition Table
7. Field List
8. Method List
9. Code Header
10. Local Variable List
Android has documentation on the Dalvik Executable Format (.dex ...
Optimise PostgreSQL for fast testing
...ta-integrity-protection and crash-safety stuff, giving it permission to totally trash your data if you lose power or have an OS crash.
Needless to say, you should never enable fsync=off in production unless you're using Pg as a temporary database for data you can re-generate from elsewhere. If and ...
Android -Starting Service at Boot Time
...1.0">
<application android:icon="@drawable/icon" android:label="@string/app_name" android:debuggable="true">
<activity android:name=".BR_Example"
android:label="@string/app_name">
<intent-filter>
<action android:name=...
Find and Replace Inside a Text File from a Bash Command
What's the simplest way to do a find and replace for a given input string, say abc , and replace with another string, say XYZ in file /tmp/file.txt ?
...
Access event to call preventdefault from custom function originating from onclick attribute of tag
...t;
If JavaScript is enabled, it opens the PDF with a cache busting query string, if not it just opens the PDF.
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Allow User to input HTML in ASP.NET MVC - ValidateInput or AllowHtml
...s BlogEntry {
public int UserId {get;set;}
[AllowHtml]
public string BlogText {get;set;}
}
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What is for Python what 'explode' is for PHP?
I had a string which is stored in a variable myvar = "Rajasekar SP" . I want to split it with delimiter like we do using explode in PHP.
...
How do you do a case insensitive search using a pattern modifier using less?
...ummon this feature on a per search basis like so:
less prompt> /search string/-i
This option is in less's interactive help which you access via h:
less prompt> h
...
-i ........ --ignore-case
Ignore case in searches that do not contain uppercase.
-I ........ --IGN...