In Emacs, basic search tool (I-Search) allows you to search after or before the location of your cursor.
To search for sometext after the location of your cursor (search-forward) hit C-s sometext. If you want to go to the next occurence of sometext, just press C-s again (and so on for the ne...
The System.String class supports a number of methods to convert between uppercase and lowercase characters in a string.
System.String.ToLowerInvariant is used to return a String object converted to lowercase.
System.String.ToUpperInvariant is used to return a String object converted to upper...
The System.String.Join method allows to concatenate all elements in a string array, using a specified separator between each element:
string[] words = {"One", "Two", "Three", "Four"};
string singleString = String.Join(",", words); // singleString =...
Get all files in Directory
var FileSearchRes = Directory.GetFiles(@Path, "*.*", SearchOption.AllDirectories);
Returns an array of FileInfo, representing all the files in the specified directory.
Get Files with specific extension
var FileSearchRes = Directory.GetFiles(@Path, "*...
By going to Settings >> Keymap A window will popup showing All the Editor Actions with the their name and shortcuts. Some of the Editor Actions do not have shortcuts. So right click on that and add a new shortcut to that.
Check the image below
Problem:
If after the AsyncTask starts there is a screen rotation the owning activity is destroyed and recreated.
When the AsyncTask finishes it wants to update the UI that may not valid anymore.
Solution:
Using Loaders, one can easily overcome the activity destruction/recreation.
Example:
...
A spring bean can be configured such that it will register only if it has a particular value or a specified property is met. To do so, implement Condition.matches to check the property/value:
public class PropertyCondition implements Condition {
@Override
public boolean matches(ConditionC...
There is no format specifier to print boolean type using NSLog. One way to print boolean value is to convert it to a string.
BOOL boolValue = YES;
NSLog(@"Bool value %@", boolValue ? @"YES" : @"NO");
Output:
2016-07-30 22:53:18.269 Test[4445:64129] Bool value YES
...
Before starting with the example I'd recommend to create a Singleton with a delegate class member so you could achieve a use case of uploading a file in the background and let the user keep using your app while the files are being uploaded even when the app is the background.
Let's start, first, we...
Pressing C-h a will run the emacs function apropos-command which makes emacs prompt for words (or a regexp) to search for. It will then show a buffer containing a list of names and descriptions related to that topic, including key bindings for each of the functions available via keystrokes.
Pressin...
Another powerful & mature concurrency tool in Haskell is Software Transactional Memory, which allows for multiple threads to write to a single variable of type TVar a in an atomic manner.
TVar a is the main type associated with the STM monad and stands for transactional variable. They're used m...
Vectors can be map'd and fold'd,filter'd andzip`'d:
Prelude Data.Vector> Data.Vector.map (^2) y
fromList [0,1,4,9,16,25,36,49,64,81,100,121] :: Data.Vector.Vector
Reduce to a single value:
Prelude Data.Vector> Data.Vector.foldl (+) 0 y
66
Vim knows The Answer:
:help 42
Vim will open the usr_42.txt document from the manual and show the following text:
What is the meaning of life, the universe and everything? 42
Douglas Adams, the only person who knew what this question really was about is
now dead, unfortunately. So now you m...
These rules apply only if you use manual reference counting!
You own any object you create
By calling a method whose name begins with alloc, new, copy or mutableCopy.
For example:
NSObject *object1 = [[NSObject alloc] init];
NSObject *object2 = [NSObject new];
NSObject *object3 = [object2 ...
A Haskell project can either use the system wide packages or use a sandbox. A sandbox is an isolated package database and can prevent dependency conflicts, e. g. if multiple Haskell projects use different versions of a package.
To initialize a sandbox for a Haskell package go to its directory and r...
After you have opened a split window in vim (as demonstrated by many examples under this tag) then you will likely want to control windows quickly. Here is how to control split windows using keyboard shortcuts.
Move to split Above/Below:
Ctrl + w and k
Ctrl + w and j
Move to split Left/Right...
Here is a quick reference for advanced insertion, formatting, and filtering commands/shortcuts.
Command/ShortcutResultg + ? + mPerform rot13 encoding, on movement mn + ctrl + a+n to number under cursorn + ctrl + x-n to number under cursorg + q+ mFormat lines of movement m to fixed width:rce wCenter...
A SIGABRT or an EXC_BAD_INSTRUCTION usually means the app crashed itself intentionally because some check failed. These should log a message to the debugger console with more information; check there for more information.
Many SIGABRTs are caused by uncaught Objective-C exceptions. There are a lo...
If you either have apps generated with pre-android support or just did that on purpose, you can always add android project to your app.
$ react-native android
This will generate android folder and index.android.js inside your app.
