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""" ================================================================================ DRAW MULTIPLE LINES IN THE SAME PLOT ================================================================================ """ import matplotlib.pyplot as plt ...

Objective-C supports a special type called `instancetype that can only be used as type returned by a method. It evaluates to the class of the receiving object. Consider the following class hierarchy: @interface Foo : NSObject - (instancetype)initWithString:(NSString *)string; @end @interf...

You can create and configure build types in the module-level build.gradle file inside the android {} block. android { ... defaultConfig {...} buildTypes { release { minifyEnabled true proguardFiles getDefaultProguar...

To delete all rows from the table //get writable database SQLiteDatabase db = openHelper.getWritableDatabase(); db.delete(TABLE_NAME, null, null); db.close(); To delete all rows from the table and get the count of the deleted row in return value //get writable database SQLiteDatabase db =...

HTTP Basic Authentication provides a straightforward mechanism for authentication. Credentials are sent in plain text, and so is insecure by default. Successful authentication proceeds as follows. The client requests a page for which access is restricted: GET /secret The server responds with st...

# install node-inspector terminal-a$ npm install -g node-inspector # start meteor terminal-a$ cd helloworld terminal-a$ NODE_OPTIONS='--debug-brk --debug' mrt run # alternatively, some people report this syntax being better terminal-a$ sudo NODE_OPTIONS='--debug' ROOT_URL=http://hellow...

Cache-Control: no-cache The client will behave as if the response was not cached. This is appropriate for resources that can unpredictably change at any time, and which users must always see in the latest version. Responses with no-cache will be slower (high latency) due to need to contact the s...

Running svn log will show you all the commit messages, you probably want to review only certain revisions. View the n most recent revisions: svn log -n View a specific revision: svn log -c rXXX View the paths affected: svn log -v -c rXXX

Given a file using ; as a column delimiter. We compute the mean of the values in the second column with the following program, the provided input is the list of grades of a student group: awk -F';' '{ sum += $2 } END { print(sum / NR) }' <<EOF Alice;2 Victor;1 Barbara;1 Casper;4 Deborah;...

Given a file using ; as a column delimiter. We compute the median of the values in the second column with the following program, written for GNU awk. The provided input is the list of grades of a student group: gawk -F';' '{ sample[NR] = $2 } END { asort(sample); if(NR % 2 == 1) { p...

It is a good practice to provide expression string arguments as braced strings. The heading "Double Substitution" outlines important reasons behind the same. The expr command evaluates an operator-based expression string to calculate a value. This string is constructed from the arguments ...

When the view controller is presented within a tab bar controller, you can access the tab bar controller like this: Swift let tabBarController = viewController.tabBarController Objective-C UITabBarController *tabBarController = self.tabBarController; When the view controller is part on an n...

C99 Added in the C standard version C99, _Bool is also a native C data type. It is capable of holding the values 0 (for false) and 1 (for true). #include <stdio.h> int main(void) { _Bool x = 1; _Bool y = 0; if(x) /* Equivalent to if (x == 1) */ { puts("T...

You can convert a numeric string to various Java numeric types as follows: String to int: String number = "12"; int num = Integer.parseInt(number); String to float: String number = "12.0"; float num = Float.parseFloat(number); String to double: String double = "1...

By default CakePHP loads the related model in the controller. In order to load another model in the controller, use the loadModel() method: $this->loadModel('Articles'); or load on the fly $table = TableRegistry::get('Articles'); $table->find();

Dim fso As New Scripting.FileSystemObject Debug.Print fso.GetExtensionName("MyFile.something.txt") Prints txt Note that the GetExtensionName() method already handles multiple periods in a file name.

The default rules require Authentication. They allow full read and write access to authenticated users of your app. They are useful if you want data open to all users of your app but don't want it open to the world. // These rules require authentication { "rules": { ".read&...

Here's an example of a rule that gives each authenticated user a personal node at /users/$user_id where $user_id is the ID of the user obtained through Authentication. // These rules grant access to a node matching the authenticated // user's ID from the Firebase auth token { "rules"...

from __future__ import print_function import threading def counter(count): while count > 0: print("Count value", count) count -= 1 return t1 = threading.Thread(target=countdown,args=(10,)) t1.start() t2 = threading.Thread(target=countdown,args=(20,)) ...

// Remember to initialize your client as described in the Remarks section Awareness.SnapshotApi.getHeadphoneState(client) .setResultCallback(new ResultCallback<HeadphoneStateResult>() { @Override public void onResult(@NonNull HeadphoneStateResult headphoneStateResult) {...