Here is an example :
my_array = array('i', [1,2,3,4,5])
my_array.remove(4)
# array('i', [1, 2, 3, 5])
We see that the element 4 was removed from the array.
pop removes the last element from the array. Here is an example :
my_array = array('i', [1,2,3,4,5])
my_array.pop()
# array('i', [1, 2, 3, 4])
So we see that the last element (5) was popped out of array.
The reverse() method does what the name says it will do - reverses the array. Here is an example :
my_array = array('i', [1,2,3,4,5])
my_array.reverse()
# array('i', [5, 4, 3, 2, 1])
This method provides you the array buffer start address in memory and number of elements in array. Here is an example:
my_array = array('i', [1,2,3,4,5])
my_array.buffer_info()
(33881712, 5)
When you need a Python list object, you can utilize the tolist() method to convert your array to a list.
my_array = array('i', [1,2,3,4,5])
c = my_array.tolist()
# [1, 2, 3, 4, 5]
You are able to append a string to a character array using fromstring()
my_char_array = array('c', ['g','e','e','k'])
my_char_array.fromstring("stuff")
print(my_char_array)
#array('c', 'geekstuff')
Provided that barButtonItem has a non-null image property (e.g. set in the Interface Builder).
Objective-C
barButtonItem.image = [barButtonItem.image imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
This command will save the open file with sudo rights
:w !sudo tee % >/dev/null
You can also map w!! to write out a file as root
:cnoremap w!! w !sudo tee % >/dev/null
You can restart ubuntu from command line. Below is example of restarting ubuntu immediately.
sudo reboot
You need to have sudo privilege in order to use this command.
Another commands with same results are sudo shutdown -r now and sudo init 6.
2005
The following iterates over the characters of the string s. It works similarly for looping over the elements of an array or a set, so long as the type of the loop-control variable (c, in this example) matches the element type of the value being iterated.
program ForLoopOnString;
{$APPTYPE ...
When I first started managing the keyboard I would use separate Notifications in each ViewController.
Notification Method (Using NSNotification):
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
NSNotificationCenter.defaultCenter().a...
Objects can be centered by using margin: 0 auto; if they are block elements and have a defined width.
HTML
<div class="containerDiv">
<div id="centeredDiv"></div>
</div>
<div class="containerDiv">
<p id="centeredPara...
Any nullable type is a generic type. And any nullable type is a value type.
There are some tricks which allow to effectively use the result of the Nullable.GetUnderlyingType method when creating code related to reflection/code-generation purposes:
public static class TypesHelper {
public stat...
NSArray *a = @[@1];
a = [a arrayByAddingObject:@2];
a = [a arrayByAddingObjectsFromArray:@[@3, @4, @5]];
These methods are optimized to recreate the new array very efficiently, usually without having to destroy the original array or even allocate more memory.
The <cfparam> tag creates a variable if it does not already exist. You can assign a default value using the default attribute. This can be used if you want to create a variable, but don't want to overwrite it if it has been previously created elsewhere.
Here the variable hasn't been set previ...
You can check if a variable has been defined in a scope by using ColdFusion's built in StructKeyExists() function. This can be used inside a <cfif> tag to prevent error messages in the event you attempt to refer to a variable that does not exist. You can also use this function to determine whe...
This is a very basic feature selection technique.
Its underlying idea is that if a feature is constant (i.e. it has 0 variance), then it cannot be used for finding any interesting patterns and can be removed from the dataset.
Consequently, a heuristic approach to feature elimination is to first re...
Makes an ajax request and updates only part of the view.
Bean.java
@ManagedBean
@ViewScoped
public class Bean {
public Date getCurrentDate() {
return new Date();
}
}
sample.xhtml
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://xmlns...
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...
