Tutorial by Examples: is

Makes a request only sending part of the form. The text1 value is set, but not text2, as the listener states. Bean.java @ManagedBean @ViewScoped public class Bean { private String text1; private String text2; public String getText1() { return text1; } pu...

To split strings, Guava introduces the Splitter class. Why not use Java's splitting capabilities? As a rule, Guava does not duplicate functionality that is readily available in Java. Why then do we need an additional Splitter class? Do the split methods in Java's String class not provide us with a...

Custom Setting Custom Setting Field Custom Setting Field Value When the field is checked the validation rule will be disabled, for the running user or in this example, their profile - The rule can also be disabled for a whole Salesforce org - Validation Rule AND( /* the below is the...

Explanation In this example a simple Trigger has been created to change the Close Date of an Opportunity, that's about to be inserted or updated, to a date 10 days in the future. The Apex Controller custom setting's checkbox field enables the code to be disabled at the user / profile / org level. ...

CREATE TABLE new_table_name LIKE existing_table_name;

What you need is to get an entitlements file so the app can access your iCloud and write records using CloudKit. Follow the steps to grant access to iCloud from your app: 1- Select the project in the Project Navigator, and then open the General tab. 2- In the Identity section, set your developer ...

Search for :h UserGettingBored *UserGettingBored* UserGettingBored When the user presses the same key 42 times. Just kidding! :-)

Depending on the device/release version of the system, some API may not be available. You can check which contract is supported by using ApiInformation.IsApiContractPresent() For example, this will return true on phone devices and false on the others ApiInformation.IsApiContractPresent(typeof(Cal...

The IsHighResolution property indicates whether the timer is based on a high-resolution performance counter or based on the DateTime class. This field is read-only. // Display the timer frequency and resolution. if (Stopwatch.IsHighResolution) { Console.WriteLine("Operations timed ...

HTML <div> Even if this div is too small to display its contents, the content is not clipped. </div> CSS div { width:50px; height:50px; overflow:visible; } Result Content is not clipped and will be rendered outside the content box if it exceeds its co...

DisplayName sets display name for a property, event or public void method having zero (0) arguments. public class Employee { [DisplayName(@"Employee first name")] public string FirstName { get; set; } } Simple usage example in XAML application <Window x:Class="WpfA...

GDB, short for GNU Debugger, is the most popular debugger for UNIX systems to debug C and C++ programs. GNU Debugger, which is also called gdb, is the most popular debugger for UNIX systems to debug C and C++ programs. GNU Debugger helps you in getting information about the following: If a co...

The function np.loadtxt can be used to read csv-like files: # File: # # Col_1 Col_2 # 1, 1 # 2, 4 # 3, 9 np.loadtxt('/path/to/dir/csvlike.txt', delimiter=',', comments='#') # Output: # array([[ 1., 1.], # [ 2., 4.], # [ 3., 9.]]) The same file could be read ...

If an iteration method such as each is called without a block, an Enumerator should be returned. This can be done using the enum_for method: def each return enum_for :each unless block_given? yield :x yield :y yield :z end This enables the programmer to compose Enumerable operati...

Using UISettings, the appearance of the Google Map can be modified. Here is an example of some common settings: mGoogleMap.setMapType(GoogleMap.MAP_TYPE_HYBRID); mGoogleMap.getUiSettings().setMapToolbarEnabled(true); mGoogleMap.getUiSettings().setZoomControlsEnabled(true); mGoog...

aws s3 ls Use a named profile aws --profile myprofile s3 ls List all objects in a bucket, including objects in folders, with size in human-readable format and a summary of the buckets properties in the end - aws s3 ls --recursive --summarize --human-readable s3://<bucket_name>/

You can do a permissions check when sending an Intent to a registered broadcast receiver. The permissions you send are cross-checked with the ones registered under the tag. They restrict who can send broadcasts to the associated receiver. To send a broadcast request with permissions, specify the p...

/*- * * The default VCL code. * * NB! You do NOT need to copy & paste all of these functions into your * own vcl code, if you do not provide a definition of one of these * functions, the compiler will automatically fall back to the default * code from this file. * */ sub vcl...

/* * The built-in (previously called default) VCL code. * * NB! You do NOT need to copy & paste all of these functions into your * own vcl code, if you do not provide a definition of one of these * functions, the compiler will automatically fall back to the default * code from this f...

for arg; do echo arg=$arg done A for loop without a list of words parameter will iterate over the positional parameters instead. In other words, the above example is equivalent to this code: for arg in "$@"; do echo arg=$arg done In other words, if you catch yourself wri...