Tutorial by Examples: di

Data from a GET request is stored in the superglobal $_GET in the form of an associative array. Note that accessing a non-existent array item generates a notice, so existence should always be checked with the isset() or empty() functions, or the null coalesce operator. Example: (for URL /topics.ph...

-> Note: make sure you set up HStoreField first before going on with this example. (above) No parameters are required for initializing a HStoreField. from django.contrib.postgres.fields import HStoreField from django.db import models class Catalog(models.model): name = models.C...

Run command below to install nginx. sudo apt-get install nginx By default, Nginx automatically starts when it is installed. You can access the default Nginx landing page to confirm that the software is running properly by visiting your server's domain name or public IP address in your web browse...

Dim array2D(,) As Integer = {{1, 2, 3}, {4, 5, 6}} ' array2D(0, 0) is 1 ; array2D(0, 1) is 2 ; array2D(1, 0) is 4 Dim array3D(,,) As Integer = {{{1, 2, 3}, {4, 5, 6}}, {{7, 8, 9}, {10, 11, 12}}} ' array3D(0, 0, 0) is 1 ; array3D(0, 0, 1) is 2 ' array3D(0, 1, 0) is 4 ; array3D(1, 0, 0) is 7 ...

You can also turn on more tests, such as: valgrind -q --tool=memcheck --leak-check=yes ./my-program arg1 arg2 < test-input See valgrind --help for more information about the (many) options, or look at the documentation at http://valgrind.org/ for detailed information about what the output mea...

ClientContext clientContext = new ClientContext(siteUrl); SP.List oList = clientContext.Web.Lists.GetByTitle("Announcements"); SP.Field oField = oList.Fields.AddFieldAsXml("<Field DisplayName='MyField' Type='Number' />", true, AddFieldOptions.DefaultValue); ...

ClientContext clientContext = new ClientContext("http://MyServer/sites/MySiteCollection "); GroupCollection collGroup = clientContext.Web.SiteGroups; Group oGroup = collGroup.GetById(6); UserCreationInformation userCreationInfo = new UserCreationInformation(); userCreationInfo.Email ...

ClientContext oClientContext = new ClientContext("http://MyServer/sites/MySiteCollection/MyWebSite"); Web oWebsite = clientContext.Web; GroupCreationInformation groupCreationInfo = new GroupCreationInformation(); groupCreationInfo.Title = "My New Group"; groupCreationInfo.D...

ClientContext clientContext = new ClientContext(siteUrl); SP.List oList = clientContext.Web.Lists.GetByTitle("MyList"); int itemId = 3; ListItem oListItem = oList.Items.GetById(itemId); oListItem.BreakRoleInheritance(false); User oUser = clientContext.Web.SiteUsers.GetByLoginNam...

string urlWebsite = "http://MyServer/sites/MySiteCollection"; ClientContext clientContext = new ClientContext(urlWebsite); Web oWebsite = clientContext.Web; List oList = oWebsite.Lists.GetByTitle("My List"); UserCustomActionCollection collUserCustomAction = oList.UserCustom...

string urlWebsite = "http://MyServer/sites/SiteCollection"; ClientContext clientContext = new ClientContext(urlWebsite); Web oWebsite = clientContext.Web; List oList = oWebsite.Lists.GetByTitle("My List"); UserCustomActionCollection collUserCustomAction = oList.UserCustomAc...

string urlWebsite = "http://MyServer/sites/MySiteCollection"; ClientContext clientContext = new ClientContext(urlWebsite); Web oWebsite = clientContext.Web; UserCustomActionCollection collUserCustomAction = oWebsite.UserCustomActions; UserCustomAction oUserCustomAction = collUserCu...

ClientContext oClientContext = new ClientContext("http://MyServer/sites/MySiteCollection"); File oFile = oClientContext.Web.GetFileByServerRelativeUrl("Default.aspx"); LimitedWebPartManager limitedWebPartManager = oFile.GetLimitedWebPartManager(PersonalizationScope.Shared); ...

Assume you've initialized a project with the following directory structure: /build app.js Then you add everything so you've created so far and commit: git init git add . git commit -m "Initial commit" Git will only track the file app.js. Assume you added a build step to your applicat...

val str = "Hello!" if (str.length == 0) { print("The string is empty!") } else if (str.length > 5) { print("The string is short!") } else { print("The string is long!") } The else-branches are optional in normal if-statements.

Most browsers, when configured to block cookies, will also block localStorage. Attempts to use it will result in an exception. Do not forget to manage these cases. var video = document.querySelector('video') try { video.volume = localStorage.getItem('volume') } catch (error) { alert('If...

from datetime import datetime import pandas_datareader.data as wb stocklist = ['AAPL','GOOG','FB','AMZN','COP'] start = datetime(2016,6,8) end = datetime(2016,6,11) p = wb.DataReader(stocklist, 'yahoo',start,end) p - is a pandas panel, with which we can do funny things: let's see what...

You can iterate on the object returned by groupby(). The iterator contains (Category, DataFrame) tuples. # Same example data as in the previous example. import numpy as np import pandas as pd np.random.seed(0) df = pd.DataFrame({'Age': np.random.randint(20, 70, 100), 'Sex':...

Imagine a goroutine with a two step process, where the main thread needs to do some work between each step: func main() { ch := make(chan struct{}) go func() { // Wait for main thread's signal to begin step one <-ch // Perform work time.Sle...

mutable modifier in this context is used to indicate that a data field of a const object may be modified without affecting the externally-visible state of the object. If you are thinking about caching a result of expensive computation, you should probably use this keyword. If you have a lock (for ...