In Node.js, you can use its native require("assert").deepStrictEqual. More info: http://nodejs.org/api/assert.html

For example:

var assert = require("assert");
assert.deepStrictEqual({a:1, b:2}, {a:1, b:3}); // will throw AssertionError

Another example that returns true / false instead of returning errors:

var assert = require("assert");

function deepEqual(a, b) {
    try {
      assert.deepEqual(a, b);
    } catch (error) {
      if (error.name === "AssertionError") {
        return false;
      }
      throw error;
    }
    return true;
};

The first one is the correct one, and IMHO the more efficient one, since the second 'solution' instantiates a new string instance.

When comparing objects in Java, you make a semantic check, comparing the type and identifying state of the objects to:

• itself (same instance)
• itself (clone, or reconstructed copy)
• other objects of different types
• other objects of the same type
• null

Rules:

• Symmetry: a.equals(b) == b.equals(a)
• equals() always yields true or false, but never a NullpointerException, ClassCastException or any other throwable

Comparison:

• Type check: both instances need to be of the same type, meaning you have to compare the actual classes for equality. This is often not correctly implemented, when developers use instanceof for type comparison (which only works as long as there are no subclasses, and violates the symmetry rule when A extends B -> a instanceof b != b instanceof a).
• Semantic check of identifying state: Make sure you understand by which state the instances are identified. Persons may be identified by their social security number, but not by hair color (can be dyed), name (can be changed) or age (changes all the time). Only with value objects should you compare the full state (all non-transient fields), otherwise check only what identifies the instance.

For your Person class:

public boolean equals(Object obj) {

    // same instance
    if (obj == this) {
        return true;
    }
    // null
    if (obj == null) {
        return false;
    }
    // type
    if (!getClass().equals(obj.getClass())) {
        return false;
    }
    // cast and compare state
    Person other = (Person) obj;
    return Objects.equals(name, other.name) && Objects.equals(age, other.age);
}

Reusable, generic utility class:

public final class Equals {

    private Equals() {
        // private constructor, no instances allowed
    }

    /**
     * Convenience equals implementation, does the object equality, null and type checking, and comparison of the identifying state
     *
     * @param instance       object instance (where the equals() is implemented)
     * @param other          other instance to compare to
     * @param stateAccessors stateAccessors for state to compare, optional
     * @param <T>            instance type
     * @return true when equals, false otherwise
     */
    public static <T> boolean as(T instance, Object other, Function<? super T, Object>... stateAccessors) {
        if (instance == null) {
            return other == null;
        }
        if (instance == other) {
            return true;
        }
        if (other == null) {
            return false;
        }
        if (!instance.getClass().equals(other.getClass())) {
            return false;
        }
        if (stateAccessors == null) {
            return true;
        }
        return Stream.of(stateAccessors).allMatch(s -> Objects.equals(s.apply(instance), s.apply((T) other)));
    }
}

For your Person class, using this utility class:

public boolean equals(Object obj) {
    return Equals.as(this, obj, t -> t.name, t -> t.age);
}

1. There's no need to call equals if hashCode differs.
2. There's no need to call hashCode if (obj1 == obj2).
3. There's no need for hashCode and/or equals just to iterate - you're not comparing objects
4. When needed to distinguish in between objects.

Statements a == object2 and a.equals(object2) both will always return false because a is a string while object2 is an instance of MyClass

For equals, look into Secrets of Equals by Angelika Langer. I love it very much. She's also a great FAQ about Generics in Java. View her other articles here (scroll down to "Core Java"), where she also goes on with Part-2 and "mixed type comparison". Have fun reading them!

= and LIKE is not the same;

1. = matches the exact string
2. LIKE matches a string that may contain wildcards (%)

To see if two maps have the same values, you can do the following:

• Get their Collection<V> values() views
• Wrap into List<V>
• Collections.sort those lists
• Test if the two lists are equals

Something like this works (though its type bounds can be improved on):

static <V extends Comparable<V>>
boolean valuesEquals(Map<?,V> map1, Map<?,V> map2) {
    List<V> values1 = new ArrayList<V>(map1.values());
    List<V> values2 = new ArrayList<V>(map2.values());
    Collections.sort(values1);
    Collections.sort(values2);
    return values1.equals(values2);
}

Test harness:

Map<String, String> map1 = new HashMap<String,String>();
map1.put("A", "B");
map1.put("C", "D");

Map<String, String> map2 = new HashMap<String,String>();
map2.put("A", "D");
map2.put("C", "B");

System.out.println(valuesEquals(map1, map2)); // prints "true"

This is O(N log N) due to Collections.sort.

See also:

• Collection<V> values()

To test if the keys are equals is easier, because they're Set<K>:

map1.keySet().equals(map2.keySet())

See also:

• Set<K> keySet()

If you use instanceof, making your equals implementation final will preserve the symmetry contract of the method: x.equals(y) == y.equals(x). If final seems restrictive, carefully examine your notion of object equivalence to make sure that your overriding implementations fully maintain the contract established by the Object class.

this refers to the current instance of the class (object) your equals-method belongs to. When you test this against an object, the testing method (which is equals(Object obj) in your case) will check wether or not the object is equal to the current instance (referred to as this).

An example:

Object obj = this; this.equals(obj); //true   Object obj = this; new Object().equals(obj); //false 

I use this method )

public delegate bool CompareValue<in T1, in T2>(T1 val1, T2 val2);

public static bool CompareTwoArrays<T1, T2>(this IEnumerable<T1> array1, IEnumerable<T2> array2, CompareValue<T1, T2> compareValue)
{
    return array1.Select(item1 => array2.Any(item2 => compareValue(item1, item2))).All(search => search)
            && array2.Select(item2 => array1.Any(item1 => compareValue(item1, item2))).All(search => search);
}

Really great answers and examples!

I would just like to add the fundamental difference between the two,

Operators such as == are not polymorphic, while Equals is

With that concept in mind, if you work out any example (by looking at left hand and right hand reference type, and checking/knowing if the type actually has == operator overloaded and Equals being overriden) you are certain to get the right answer.

You used the word "or" in your pseudo code, but based on your first sentence, I think you mean and. There was some confusion about this because that is not how people usually speak.

You want:

var test = $("#test").val();
if (test !== 'A' && test !== 'B'){
    do stuff;
}
else {
    do other stuff;
}

Equals can be more efficient then compareTo.

If the length of the character sequences in String doesn't match there is no way the Strings are equal so rejection can be much faster.

Moreover if it is same object (identity equality rather then logical equality), it will also be more efficient.

If they also implemented hashCode caching it could be even faster to reject non-equals in case their hashCode's doesn't match.

From the article Override equals and hashCode in Java:

Default implementation of equals() class provided by java.lang.Object compares memory location and only return true if two reference variable are pointing to same memory location i.e. essentially they are same object.

Java recommends to override equals and hashCode method if equality is going to be defined by logical way or via some business logic: example:

many classes in Java standard library does override it e.g. String overrides equals, whose implementation of equals() method return true if content of two String objects are exactly same

Integer wrapper class overrides equals to perform numerical comparison etc.

Right now you seem to be saying 'does this array of strings equal this string', which of course it never would.

Perhaps you should think about iterating through your array of strings with a loop, and checking each to see if they are equals() with the inputted string?

...or do I misunderstand your question?

Try:

zero=0;

if [[ $depth -eq $zero ]]; then
  echo "false";
  exit;
fi

There's no difference, == is a synonym for = (for the C/C++ people, I assume). See here, for example.

You could double-check just to be really sure or just for your interest by looking at the bash source code, should be somewhere in the parsing code there, but I couldn't find it straightaway.

well i might be late on this but i would like to share something:

Given the input: System.out.println(isGreaterThanZero(-1));

public static boolean isGreaterThanZero(Integer value) {
    return value == null?false:value.compareTo(0) > 0;
}

Returns false

public static boolean isGreaterThanZero(Integer value) {
    return value == null?false:value.intValue() > 0;
}

Returns true So i think in yourcase 'compareTo' will be more accurate.

Because if you do not override them you will be use the default implentation in Object.

Given that instance equality and hascode values generally require knowledge of what makes up an object they generally will need to be redefined in your class to have any tangible meaning.

Following can be an approach

   SharedPreferences se_get = getSharedPreferences("points",MODE_PRIVATE);
   Set<String> main = se_get.getStringSet("mydata",null);
   for(int jk = 0 ; jk < main.size();jk++)
   {
      Log.i("data",String.valueOf(main.toArray()[jk]));
   }

if(str.isEmpty() || str==null){ do whatever you want }

I'll try to answer several key points: this is from long Hibernate/ persistence experience including several major applications.

Entity Class: implement Serializable?

Keys needs to implement Serializable. Stuff that's going to go in the HttpSession, or be sent over the wire by RPC/Java EE, needs to implement Serializable. Other stuff: not so much. Spend your time on what's important.

Constructors: create a constructor with all required fields of the entity?

Constructor(s) for application logic, should have only a few critical "foreign key" or "type/kind" fields which will always be known when creating the entity. The rest should be set by calling the setter methods -- that's what they're for.

Avoid putting too many fields into constructors. Constructors should be convenient, and give basic sanity to the object. Name, Type and/or Parents are all typically useful.

OTOH if application rules (today) require a Customer to have an Address, leave that to a setter. That is an example of a "weak rule". Maybe next week, you want to create a Customer object before going to the Enter Details screen? Don't trip yourself up, leave possibility for unknown, incomplete or "partially entered" data.

Constructors: also, package private default constructor?

Yes, but use 'protected' rather than package private. Subclassing stuff is a real pain when the necessary internals are not visible.

Fields/Properties

Use 'property' field access for Hibernate, and from outside the instance. Within the instance, use the fields directly. Reason: allows standard reflection, the simplest & most basic method for Hibernate, to work.

As for fields 'immutable' to the application -- Hibernate still needs to be able to load these. You could try making these methods 'private', and/or put an annotation on them, to prevent application code making unwanted access.

Note: when writing an equals() function, use getters for values on the 'other' instance! Otherwise, you'll hit uninitialized/ empty fields on proxy instances.

Protected is better for (Hibernate) performance?

Unlikely.

Equals/HashCode?

This is relevant to working with entities, before they've been saved -- which is a thorny issue. Hashing/comparing on immutable values? In most business applications, there aren't any.

A customer can change address, change the name of their business, etc etc -- not common, but it happens. Corrections also need to be possible to make, when the data was not entered correctly.

The few things that are normally kept immutable, are Parenting and perhaps Type/Kind -- normally the user recreates the record, rather than changing these. But these do not uniquely identify the entity!

So, long and short, the claimed "immutable" data isn't really. Primary Key/ ID fields are generated for the precise purpose, of providing such guaranteed stability & immutability.

You need to plan & consider your need for comparison & hashing & request-processing work phases when A) working with "changed/ bound data" from the UI if you compare/hash on "infrequently changed fields", or B) working with "unsaved data", if you compare/hash on ID.

Equals/HashCode -- if a unique Business Key is not available, use a non-transient UUID which is created when the entity is initialized

Yes, this is a good strategy when required. Be aware that UUIDs are not free, performance-wise though -- and clustering complicates things.

Equals/HashCode -- never refer to related entities

"If related entity (like a parent entity) needs to be part of the Business Key then add a non insertable, non updatable field to store the parent id (with the same name as the ManytoOne JoinColumn) and use this id in the equality check"

Sounds like good advice.

Hope this helps!

The standard implementation is weak and using it leads to unnecessary collisions. Imagine a

class ListPair {
    List<Integer> first;
    List<Integer> second;

    ListPair(List<Integer> first, List<Integer> second) {
        this.first = first;
        this.second = second;
    }

    public int hashCode() {
        return Objects.hashCode(first, second);
    }

    ...
}

Now,

new ListPair(List.of(a), List.of(b, c))

and

new ListPair(List.of(b), List.of(a, c))

have the same hashCode, namely 31*(a+b) + c as the multiplier used for List.hashCode gets reused here. Obviously, collisions are unavoidable, but producing needless collisions is just... needless.

There's nothing substantially smart about using 31. The multiplier must be odd in order to avoid losing information (any even multiplier loses at least the most significant bit, multiples of four lose two, etc.). Any odd multiplier is usable. Small multipliers may lead to faster computation (the JIT can use shifts and additions), but given that multiplication has latency of only three cycles on modern Intel/AMD, this hardly matters. Small multipliers also leads to more collision for small inputs, which may be a problem sometimes.

Using a prime is pointless as primes have no meaning in the ring Z/(2**32).

So, I'd recommend using a randomly chosen big odd number (feel free to take a prime). As i86/amd64 CPUs can use a shorter instruction for operands fitting in a single signed byte, there is a tiny speed advantage for multipliers like 109. For minimizing collisions, take something like 0x58a54cf5.

Using different multipliers in different places is helpful, but probably not enough to justify the additional work.

You can reach each separate container using .parent() API.

Like,

var highestBox = 0;
        $('.container .column').each(function(){  
                if($(this).parent().height() > highestBox){  
                highestBox = $(this).height();  
        }
    }); 

null means the name isn't referencing any instantiated object. "" means an empty string.

Here a is referencing some object which happens to be an empty string. b isn't referencing any object as it's null.

Slightly off-topic to your question, but it's probably worth mentioning anyway:

Commons Lang has got some excellent methods you can use in overriding equals and hashcode. Check out EqualsBuilder.reflectionEquals(...) and HashCodeBuilder.reflectionHashCode(...). Saved me plenty of headache in the past - although of course if you just want to do "equals" on ID it may not fit your circumstances.

I also agree that you should use the @Override annotation whenever you're overriding equals (or any other method).

Here is a simple interpretation about your problem:

== (equal to) used to evaluate arithmetic expression

where as

equals() method used to compare string

Therefore, it its better to use == for numeric operations & equals() method for String related operations. So, for comparison of objects the equals() method would be right choice.

If the class implements comparable, you could also do

int compRes = a.compareTo(b);
if(compRes < 0 || compRes > 0)
    System.out.println("not equal");
else
    System.out.println("equal);

doesn't use a !, though not particularly useful, or readable....

It's entirely likely that a large portion of the developer base comes from a Java background where using == to compare strings is wrong and doesn't work.

In C# there's no (practical) difference (for strings) as long as they are typed as string.

If they are typed as object or T then see other answers here that talk about generic methods or operator overloading as there you definitely want to use the Equals method.

I see that BigDecimal has an inflate() method on equals() method. What does inflate() do actually?

Basically, inflate() calls BigInteger.valueOf(intCompact) if necessary, i.e. it creates the unscaled value that is stored as a BigInteger from long intCompact. If you don't need that BigInteger and the unscaled value fits into a long BigDecimal seems to try to save space as long as possible.

Yes. In Ruby the not equal to operator is:

!=

You can get a full list of ruby operators here: https://www.tutorialspoint.com/ruby/ruby_operators.htm.

For Firefox the problem solved itself. It has the "Edit and Resend" feature implemented.

For Chrome Tamper extension seems to do the trick.

try this

http://jsfiddle.net/qrmqM/6/

CSS

.image {
    background: url('http://cdn1.iconfinder.com/data/icons/round-simple-social-icons/58/facebook.png');
    width: 58px;
    height: 58px;
      opacity:0.4;
filter:alpha(opacity=40); /* For IE8 and earlier */
}
.image:hover{
    background: url('http://cdn1.iconfinder.com/data/icons/round-simple-social-icons/58/facebook.png');
    width: 58px;
    height: 58px;

    border-radius:100px;
  opacity:1;
            filter:alpha(opacity=100);

}

HTML

<div class="image"></div>

Some linux distributions have a php_mysql and php_mysqli package to install.

I would like to update the existing solution to help the people who are going to calculate the semantic similarity of sentences.

Step 1:

Load the suitable model using gensim and calculate the word vectors for words in the sentence and store them as a word list

Step 2 : Computing the sentence vector

The calculation of semantic similarity between sentences was difficult before but recently a paper named "A SIMPLE BUT TOUGH-TO-BEAT BASELINE FOR SENTENCE EMBEDDINGS" was proposed which suggests a simple approach by computing the weighted average of word vectors in the sentence and then remove the projections of the average vectors on their first principal component.Here the weight of a word w is a/(a + p(w)) with a being a parameter and p(w) the (estimated) word frequency called smooth inverse frequency.this method performing significantly better.

A simple code to calculate the sentence vector using SIF(smooth inverse frequency) the method proposed in the paper has been given here

Step 3: using sklearn cosine_similarity load two vectors for the sentences and compute the similarity.

This is the most simple and efficient method to compute the sentence similarity.

class Timer
{
    private $startTime = null;

    public function __construct($showSeconds = true)
    {
        $this->startTime = microtime(true);
        echo 'Working - please wait...' . PHP_EOL;
    }

    public function __destruct()
    {
        $endTime = microtime(true);
        $time = $endTime - $this->startTime;

        $hours = (int)($time / 60 / 60);
        $minutes = (int)($time / 60) - $hours * 60;
        $seconds = (int)$time - $hours * 60 * 60 - $minutes * 60;
        $timeShow = ($hours == 0 ? "00" : $hours) . ":" . ($minutes == 0 ? "00" : ($minutes < 10 ? "0" . $minutes : $minutes)) . ":" . ($seconds == 0 ? "00" : ($seconds < 10 ? "0" . $seconds : $seconds));

        echo 'Job finished in ' . $timeShow . PHP_EOL;
    }
}

$t = new Timer(); // echoes "Working, please wait.."

[some operations]

unset($t);  // echoes "Job finished in h:m:s"

Consider this array:

$arr = array("key1" => "value1", "key2" => "value2", "key3" => "value3", "key4" => "value4");

• To remove an element using the array key:

  // To unset an element from array using Key:
  unset($arr["key2"]);
  var_dump($arr);
  // output: array(3) { ["key1"]=> string(6) "value1" ["key3"]=> string(6) "value3" ["key4"]=> string(6) "value4" }
  

• To remove element by value:

  // remove an element by value:
  $arr = array_diff($arr, ["value1"]);
  var_dump($arr);
  // output: array(2) { ["key3"]=> string(6) "value3" ["key4"]=> string(6) "value4" } 
  

read more about array_diff: http://php.net/manual/en/function.array-diff.php

• To remove an element by using index:

  array_splice($arr, 1, 1);
  var_dump($arr);
  // array(1) { ["key3"]=> string(6) "value3" } 
  

read more about array_splice: http://php.net/manual/en/function.array-splice.php

While using TOP or a sub-query both work, I would break the problem into steps:

Find target record

SELECT MIN( date ) AS date, id
FROM myTable
WHERE id = 2
GROUP BY id

Join to get other fields

SELECT mt.id, mt.name, mt.score, mt.date
FROM myTable mt
INNER JOIN
( 
   SELECT MIN( date ) AS date, id
   FROM myTable
   WHERE id = 2
   GROUP BY id
) x ON x.date = mt.date AND x.id = mt.id

While this solution, using derived tables, is longer, it is:

• Easier to test
• Self documenting
• Extendable

It is easier to test as parts of the query can be run standalone.

It is self documenting as the query directly reflects the requirement ie the derived table lists the row where id = 2 with the earliest date.

It is extendable as if another condition is required, this can be easily added to the derived table.

what worked for me

chgrp Users FOLDER

chmod 600 FOLDER

For anyone interested in replicating this, simply follow these steps:

1. Create a new iOS project
2. Open the main storyboard and delete the default/initial UIViewController
3. Drag out a new UITableViewController from the Object Library
4. Set it as the initial view controller
5. Feed the table some test data

If you follow the above steps, when you run the app, you will see that nothing, including tweaking Xcode's checkboxes to "Extend Edges Under {Top, Bottom, Opaque} Bars" works to stop the first row from appearing under the status bar, nor can you address this programmatically.

E.g. In the above scenario, the following will have no effect:

// These do not work
self.edgesForExtendedLayout=UIRectEdgeNone;
self.extendedLayoutIncludesOpaqueBars=NO;
self.automaticallyAdjustsScrollViewInsets=NO;

This issue can be very frustrating, and I believe it is a bug on Apple's end, especially because it shows up in their own pre-wired UITableViewController from the object library.

I disagree with everyone who is trying to solve this by using any form of "Magic Numbers" e.g. "use a delta of 20px". This kind of tightly coupled programming is definitely not what Apple wants us to do here.

I have discovered two solutions to this problem:

• Preserving the UITableViewController's scene:
  If you would like to keep the UITableViewController in the storyboard, without manually placing it into another view, you can embed the UITableViewController in a UINavigationController (Editor > Embed In > Navigation Controller) and uncheck "Shows Navigation Bar" in the inspector. This solves the issue with no extra tweaking needed, and it also preserves your UITableViewController's scene in the storyboard.

• Using AutoLayout and embedding the UITableView into another view (I believe this is how Apple wants us to do this):
  Create an empty UIViewController and drag your UITableView in it. Then, Ctrl-drag from your UITableView towards the status bar. As the mouse gets to the bottom of the status bar, you will see an Autolayout bubble that says "Top Layout Guide". Release the mouse and choose "Vertical Spacing". That will tell the layout system to place it right below the status bar.

I have tested both ways on an empty application and they both work. You may need to do some extra tweaking to make them work for your project.

Why not simply:

if (typeof myObject.myProperty == "undefined") alert("myProperty is not defined!");

Or if you expect a specific type:

if (typeof myObject.myProperty != "string") alert("myProperty has wrong type or does not exist!");

 [project structure]: http://i.stack.imgur.com/RAGX3.jpg
-------------------------------
    package beans;

        import java.util.Properties;
        import java.util.Set;

        public class PropertiesBeans {

            private Properties properties;

            public void setProperties(Properties properties) {
                this.properties = properties;
            }

            public void getProperty(){
                Set keys = properties.keySet();
                for (Object key : keys) {
                    System.out.println(key+" : "+properties.getProperty(key.toString()));
                }
            }

        }
    ----------------------------

        package beans;

        import org.springframework.context.ApplicationContext;
        import org.springframework.context.support.ClassPathXmlApplicationContext;

        public class Test {

            public static void main(String[] args) {
                // TODO Auto-generated method stub
                ApplicationContext ap = new ClassPathXmlApplicationContext("resource/spring.xml");
                PropertiesBeans p = (PropertiesBeans)ap.getBean("p");
                p.getProperty();
            }

        }
    ----------------------------

 - driver.properties

    Driver = com.mysql.jdbc.Driver
    url = jdbc:mysql://localhost:3306/test
    username = root
    password = root
    ----------------------------



     <beans xmlns="http://www.springframework.org/schema/beans"
               xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
               xmlns:util="http://www.springframework.org/schema/util"
               xsi:schemaLocation="
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
        http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.0.xsd">

            <bean id="p" class="beans.PropertiesBeans">
                <property name="properties">
                    <util:properties location="classpath:resource/driver.properties"/>
                </property>
            </bean>

        </beans>

try this method given below, modify to suit your need.

SELECT
  employment_status.staff_type,
  COUNT(monthly_pay_register.age),
  monthly_pay_register.BASIC_SALARY,
  monthly_pay_register.TOTAL_MONTHLY_ALLOWANCES,
  monthly_pay_register.MONTHLY_GROSS,
  monthly_pay_register.TOTAL_MONTHLY_DEDUCTIONS,
  monthly_pay_register.MONTHLY_PAY
FROM 
  (monthly_pay_register INNER JOIN deduction_logs 
ON
  monthly_pay_register.employee_info_employee_no = deduction_logs.employee_no)
INNER JOIN
  employment_status ON deduction_logs.employee_no = employment_status.employee_no
WHERE
  monthly_pay_register.`YEAR`=2017
and 
  monthly_pay_register.`MONTH`='may'

There are two semantically correct solutions to this question:

1. Using a plugin
2. Creating a custom include

1. Using a plugin

I've tried a couple of plugins doing this and my favourite is jekyll-figure.

1.1. Install jekyll-figure

One way to install jekyll-figure is to add gem "jekyll-figure" to your Gemfile in your plugins group.

Then run bundle install from your terminal window.

1.2. Use jekyll-figure

Simply wrap your markdown in {% figure %} and {% endfigure %} tags.

You caption goes in the opening {% figure %} tag, and you can even style it with markdown!

Example:

{% figure caption:"Le logo de **Jekyll** et son clin d'oeil à Robert Louis Stevenson" %}
    ![Le logo de Jekyll](/assets/images/2018-08-07-jekyll-logo.png)
{% endfigure %}

1.3. Style it

Now that your images and captions are semantically correct, you can apply CSS as you wish to:

• figure (for both image and caption)
• figure img (for image only)
• figcaption (for caption only)

2. Creating a custom include

You'll need to create an image.html file in your _includes folder, and include it using Liquid in Markdown.

2.1. Create _includes/image.html

Create the image.html document in your _includes folder :

<!-- _includes/image.html -->
<figure>
    {% if include.url %}
    <a href="{{ include.url }}">
    {% endif %}
    <img
        {% if include.srcabs %}
            src="{{ include.srcabs }}"
        {% else %}
            src="{{ site.baseurl }}/assets/images/{{ include.src }}"
        {% endif %}
    alt="{{ include.alt }}">
    {% if include.url %}
    </a>
    {% endif %}
    {% if include.caption %}
        <figcaption>{{ include.caption }}</figcaption>
    {% endif %}
</figure>

2.2. In Markdown, include an image using Liquid

An image in /assets/images with a caption:

This is [Jekyll](https://jekyllrb.com)'s logo :

{% include image.html
    src="jekyll-logo.png" <!-- image filename (placed in /assets/images) -->
    alt="Jekyll's logo" <!-- alt text -->
    caption="This is Jekyll's logo, featuring Dr. Jekyll's serum!" <!-- Caption -->
%}

An (external) image using an absolute URL: (change src="" to srcabs="")

This is [Jekyll](https://jekyllrb.com)'s logo :

{% include image.html
    srcabs="https://jekyllrb.com/img/logo-2x.png" <!-- absolute URL to image file -->
    alt="Jekyll's logo" <!-- alt text -->
    caption="This is Jekyll's logo, featuring Dr. Jekyll's serum!" <!-- Caption -->
%}

A clickable image: (add url="" argument)

This is [Jekyll](https://jekyllrb.com)'s logo :

{% include image.html
    src="https://jekyllrb.com/img/logo-2x.png" <!-- absolute URL to image file -->
    url="https://jekyllrb.com" <!-- destination url -->
    alt="Jekyll's logo" <!-- alt text -->
    caption="This is Jekyll's logo, featuring Dr. Jekyll's serum!" <!-- Caption -->
%}

An image without a caption:

This is [Jekyll](https://jekyllrb.com)'s logo :

{% include image.html
    src="https://jekyllrb.com/img/logo-2x.png" <!-- absolute URL to image file -->
    alt="Jekyll's logo" <!-- alt text -->
%}

2.3. Style it

Now that your images and captions are semantically correct, you can apply CSS as you wish to:

• figure (for both image and caption)
• figure img (for image only)
• figcaption (for caption only)

Second approach is object initializer in C#

Object initializers let you assign values to any accessible fields or properties of an object at creation time without having to explicitly invoke a constructor.

The first approach

var albumData = new Album("Albumius", "Artistus", 2013);

explicitly calls the constructor, whereas in second approach constructor call is implicit. With object initializer you can leave out some properties as well. Like:

 var albumData = new Album
        {
            Name = "Albumius",
        };

Object initializer would translate into something like:

var albumData; 
var temp = new Album();
temp.Name = "Albumius";
temp.Artist = "Artistus";
temp.Year = 2013;
albumData = temp;

Why it uses a temporary object (in debug mode) is answered here by Jon Skeet.

As far as advantages for both approaches are concerned, IMO, object initializer would be easier to use specially if you don't want to initialize all the fields. As far as performance difference is concerned, I don't think there would any since object initializer calls the parameter less constructor and then assign the properties. Even if there is going to be performance difference it should be negligible.

This is not really how you should design your Docker containers.

When designing a Docker container, you're supposed to build it such that there is only one process running (i.e. you should have one container for Nginx, and one for supervisord or the app it's running); additionally, that process should run in the foreground.

The container will "exit" when the process itself exits (in your case, that process is your bash script).

However, if you really need (or want) to run multiple service in your Docker container, consider starting from "Docker Base Image", which uses runit as a pseudo-init process (runit will stay online while Nginx and Supervisor run), which will stay in the foreground while your other processes do their thing.

They have substantial docs, so you should be able to achieve what you're trying to do reasonably easily.

Bit late on this thread. angular.equals does deep check, however does anyone know that why its behave differently if one of the member contain "$" in prefix ?

You can try this Demo with following input

var obj3 = {}
obj3.a=  "b";
obj3.b={};
obj3.b.$c =true;

var obj4 = {}
obj4.a=  "b";
obj4.b={};
obj4.b.$c =true;

angular.equals(obj3,obj4);

Just in case any one interested in the one line version. :)

//or in typescript: import * as fs from 'fs';
const fs = require('fs');
!fs.existsSync(dir) && fs.mkdirSync(dir);

function get_client_ip()
{
    foreach (array(
                'HTTP_CLIENT_IP',
                'HTTP_X_FORWARDED_FOR',
                'HTTP_X_FORWARDED',
                'HTTP_X_CLUSTER_CLIENT_IP',
                'HTTP_FORWARDED_FOR',
                'HTTP_FORWARDED',
                'REMOTE_ADDR') as $key) {
        if (array_key_exists($key, $_SERVER)) {
            foreach (explode(',', $_SERVER[$key]) as $ip) {
                $ip = trim($ip);
                if ((bool) filter_var($ip, FILTER_VALIDATE_IP,
                                FILTER_FLAG_IPV4 |
                                FILTER_FLAG_NO_PRIV_RANGE |
                                FILTER_FLAG_NO_RES_RANGE)) {
                    return $ip;
                }
            }
        }
    }
    return null;
}

Or the compressed version:

function get_ip() {
    foreach (array('HTTP_CLIENT_IP', 'HTTP_X_FORWARDED_FOR', 'HTTP_X_FORWARDED', 'HTTP_X_CLUSTER_CLIENT_IP', 'HTTP_FORWARDED_FOR', 'HTTP_FORWARDED', 'REMOTE_ADDR') as $key) {
        if (array_key_exists($key, $_SERVER) === true) {
            foreach (array_map('trim', explode(',', $_SERVER[$key])) as $ip) {
                if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE) !== false) {
                    return $ip;
                }
            }
        }
    }
}

This is the solution ,

Add the html also to 100%

html,body {

   height: 100%;
   width: 100%;

}

begin
  for i in (select 'drop table '||table_name||' cascade constraints' tbl from user_tables) 
  loop
     execute immediate i.tbl;
  end loop;
end;

Mutex is to protect the shared resource.
Semaphore is to dispatch the threads.

Mutex:
Imagine that there are some tickets to sell. We can simulate a case where many people buy the tickets at the same time: each person is a thread to buy tickets. Obviously we need to use the mutex to protect the tickets because it is the shared resource.

Semaphore:
Imagine that we need to do a calculation as below:

c = a + b;

Also, we need a function geta() to calculate a, a function getb() to calculate b and a function getc() to do the calculation c = a + b.

Obviously, we can't do the c = a + b unless geta() and getb() have been finished.
If the three functions are three threads, we need to dispatch the three threads.

int a, b, c;
void geta()
{
    a = calculatea();
    semaphore_increase();
}

void getb()
{
    b = calculateb();
    semaphore_increase();
}

void getc()
{
    semaphore_decrease();
    semaphore_decrease();
    c = a + b;
}

t1 = thread_create(geta);
t2 = thread_create(getb);
t3 = thread_create(getc);
thread_join(t3);

With the help of the semaphore, the code above can make sure that t3 won't do its job untill t1 and t2 have done their jobs.

In a word, semaphore is to make threads execute as a logicial order whereas mutex is to protect shared resource.
So they are NOT the same thing even if some people always say that mutex is a special semaphore with the initial value 1. You can say like this too but please notice that they are used in different cases. Don't replace one by the other even if you can do that.

This works:

sc.exe config "[servicename]" obj= "[.\username]" password= "[password]"

Where each of the [bracketed] items are replaced with the true arguments. (Keep the quotes, but don't keep the brackets.)

Just keep in mind that:

• The spacing in the above example matters. obj= "foo" is correct; obj="foo" is not.
• '.' is an alias to the local machine, you can specify a domain there (or your local computer name) if you wish.
• Passwords aren't validated until the service is started
• Quote your parameters, as above. You can sometimes get by without quotes, but good luck.

For me, the problem was the use of Java 1.8 in a module, but not in the app module. I added this to the app build gradle and worked:

android{
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }

You can use this code to get the desired result. It will remove duplicates.

$a1=array("a"=>"red","b"=>"green","c"=>"blue","d"=>"yellow");
$a2=array("e"=>"red","f"=>"green","g"=>"blue");

$result=array_unique(array_merge($a1,$a2));

print_r($result);

What is a LATERAL join?

The feature was introduced with PostgreSQL 9.3.
Quoting the manual:

Subqueries appearing in FROM can be preceded by the key word LATERAL. This allows them to reference columns provided by preceding FROM items. (Without LATERAL, each subquery is evaluated independently and so cannot cross-reference any other FROM item.)

Table functions appearing in FROM can also be preceded by the key word LATERAL, but for functions the key word is optional; the function's arguments can contain references to columns provided by preceding FROM items in any case.

Basic code examples are given there.

More like a correlated subquery

A LATERAL join is more like a correlated subquery, not a plain subquery, in that expressions to the right of a LATERAL join are evaluated once for each row left of it - just like a correlated subquery - while a plain subquery (table expression) is evaluated once only. (The query planner has ways to optimize performance for either, though.)
Related answer with code examples for both side by side, solving the same problem:

• Optimize GROUP BY query to retrieve latest row per user

For returning more than one column, a LATERAL join is typically simpler, cleaner and faster.
Also, remember that the equivalent of a correlated subquery is LEFT JOIN LATERAL ... ON true:

• Call a set-returning function with an array argument multiple times

Things a subquery can't do

There are things that a LATERAL join can do, but a (correlated) subquery cannot (easily). A correlated subquery can only return a single value, not multiple columns and not multiple rows - with the exception of bare function calls (which multiply result rows if they return multiple rows). But even certain set-returning functions are only allowed in the FROM clause. Like unnest() with multiple parameters in Postgres 9.4 or later. The manual:

This is only allowed in the FROM clause;

So this works, but cannot (easily) be replaced with a subquery:

CREATE TABLE tbl (a1 int[], a2 int[]);
SELECT * FROM tbl, unnest(a1, a2) u(elem1, elem2);  -- implicit LATERAL

The comma (,) in the FROM clause is short notation for CROSS JOIN.
LATERAL is assumed automatically for table functions.
About the special case of UNNEST( array_expression [, ... ] ):

• How do you declare a set-returning-function to only be allowed in the FROM clause?

Set-returning functions in the SELECT list

You can also use set-returning functions like unnest() in the SELECT list directly. This used to exhibit surprising behavior with more than one such function in the same SELECT list up to Postgres 9.6. But it has finally been sanitized with Postgres 10 and is a valid alternative now (even if not standard SQL). See:

• What is the expected behaviour for multiple set-returning functions in SELECT clause?

Building on above example:

SELECT *, unnest(a1) AS elem1, unnest(a2) AS elem2
FROM   tbl;

Comparison:

dbfiddle for pg 9.6 here
dbfiddle for pg 10 here

Clarify misinformation

The manual:

For the INNER and OUTER join types, a join condition must be specified, namely exactly one of NATURAL, ON join_condition, or USING (join_column [, ...]). See below for the meaning.
For CROSS JOIN, none of these clauses can appear.

So these two queries are valid (even if not particularly useful):

SELECT *
FROM   tbl t
LEFT   JOIN LATERAL (SELECT * FROM b WHERE b.t_id = t.t_id) t ON TRUE;

SELECT *
FROM   tbl t, LATERAL (SELECT * FROM b WHERE b.t_id = t.t_id) t;

While this one is not:

SELECT *
FROM   tbl t
LEFT   JOIN LATERAL (SELECT * FROM b WHERE b.t_id = t.t_id) t;

That's why Andomar's code example is correct (the CROSS JOIN does not require a join condition) and Attila's is was not.

if(/chrom(e|ium)/.test(navigator.userAgent.toLowerCase())){
 alert('I am chrome');
}

import numpy as np
import pandas as pd

raw_data = {'first_name': ['Jason', np.nan, 'Tina', 'Jake', 'Amy'], 
        'last_name': ['Miller', np.nan, np.nan, 'Milner', 'Cooze'], 
        'age': [22, np.nan, 23, 24, 25], 
        'sex': ['m', np.nan, 'f', 'm', 'f'], 
        'Test1_Score': [4, np.nan, 0, 0, 0],
        'Test2_Score': [25, np.nan, np.nan, 0, 0]}
results = pd.DataFrame(raw_data, columns = ['first_name', 'last_name', 'age', 'sex', 'Test1_Score', 'Test2_Score'])

results 
'''
  first_name last_name   age  sex  Test1_Score  Test2_Score
0      Jason    Miller  22.0    m          4.0         25.0
1        NaN       NaN   NaN  NaN          NaN          NaN
2       Tina       NaN  23.0    f          0.0          NaN
3       Jake    Milner  24.0    m          0.0          0.0
4        Amy     Cooze  25.0    f          0.0          0.0
'''

You can use following function, which will give you output in Dataframe

• Zero Values
• Missing Values
• % of Total Values
• Total Zero Missing Values
• % Total Zero Missing Values
• Data Type

Just copy and paste following function and call it by passing your pandas Dataframe

def missing_zero_values_table(df):
        zero_val = (df == 0.00).astype(int).sum(axis=0)
        mis_val = df.isnull().sum()
        mis_val_percent = 100 * df.isnull().sum() / len(df)
        mz_table = pd.concat([zero_val, mis_val, mis_val_percent], axis=1)
        mz_table = mz_table.rename(
        columns = {0 : 'Zero Values', 1 : 'Missing Values', 2 : '% of Total Values'})
        mz_table['Total Zero Missing Values'] = mz_table['Zero Values'] + mz_table['Missing Values']
        mz_table['% Total Zero Missing Values'] = 100 * mz_table['Total Zero Missing Values'] / len(df)
        mz_table['Data Type'] = df.dtypes
        mz_table = mz_table[
            mz_table.iloc[:,1] != 0].sort_values(
        '% of Total Values', ascending=False).round(1)
        print ("Your selected dataframe has " + str(df.shape[1]) + " columns and " + str(df.shape[0]) + " Rows.\n"      
            "There are " + str(mz_table.shape[0]) +
              " columns that have missing values.")
#         mz_table.to_excel('D:/sampledata/missing_and_zero_values.xlsx', freeze_panes=(1,0), index = False)
        return mz_table

missing_zero_values_table(results)

Output

Your selected dataframe has 6 columns and 5 Rows.
There are 6 columns that have missing values.

             Zero Values  Missing Values  % of Total Values  Total Zero Missing Values  % Total Zero Missing Values Data Type
last_name              0               2               40.0                          2                         40.0    object
Test2_Score            2               2               40.0                          4                         80.0   float64
first_name             0               1               20.0                          1                         20.0    object
age                    0               1               20.0                          1                         20.0   float64
sex                    0               1               20.0                          1                         20.0    object
Test1_Score            3               1               20.0                          4                         80.0   float64

If you want to keep it simple then you can use following function to get missing values in %

def missing(dff):
    print (round((dff.isnull().sum() * 100/ len(dff)),2).sort_values(ascending=False))


missing(results)
'''
Test2_Score    40.0
last_name      40.0
Test1_Score    20.0
sex            20.0
age            20.0
first_name     20.0
dtype: float64
'''

Months in Java Calendar are 0-indexed. Calendar.JANUARY isn't a field so you shouldn't be passing it in to the get method.

Context.clearRect(starting width, starting height, ending width, ending height);

Example: context.clearRect(0, 0, canvas.width, canvas.height);

You said you are using process.on('uncaughtException', callback);
Where are you executing this statement? Is it within the callback passed to http.createServer?
If yes, different copy of the same callback will get attached to the uncaughtException event upon each new request, because the function (req, res) { ... } gets executed everytime a new request comes in and so will the statement process.on('uncaughtException', callback);
Note that the process object is global to all your requests and adding listeners to its event everytime a new request comes in will not make any sense. You might not want such kind of behaviour.
In case you want to attach a new listener for each new request, you should remove all previous listeners attached to the event as they no longer would be required using:
process.removeAllListeners('uncaughtException');

For parseInt to work, your string should have only numerical data. Something like this:

 str1 = "123.00";
 str2 = "50.00";
 total = parseInt(str1)+parseInt(str2);
 alert(total);

Can you split the string before you start processing them for a total?

With current Angular 4 and 5 versions, there is an IDE for that.

Go to eclipse market place any search for 'Angular'. You will see the IDE and install it.

After that restart eclipse and follow the welcome messages to choose preferences.

How to start using eclipse with angular projects?

Considering you already have angular project and you want to import it into eclipse.

go to file > import > choose Angular Project

and It would be better to have your projects in a separate working set so that you will not confuse it with other kind of (like java)projects.

With Angular IDE You will have a terminal window too.

To open this type terminal in eclipse search box(quick access) on the top right corner.

Pat - You are right. That's why this solution would satisfy both "dinosaurs" and contemporaries. :)

.btnCont {_x000D_
  display: table-layout;_x000D_
  width: 500px;_x000D_
}_x000D_
_x000D_
.txtCont {_x000D_
  display: table-cell;_x000D_
  width: 70%;_x000D_
  max-width: 80%;_x000D_
  min-width: 20%;_x000D_
}_x000D_
_x000D_
.subCont {_x000D_
  display: table-cell;_x000D_
  width: 30%;_x000D_
  max-width: 80%;_x000D_
  min-width: 20%;_x000D_
}

<div class="btnCont">_x000D_
  <div class="txtCont">_x000D_
    Long text that will auto adjust as it grows. The best part is that the width of the container would not go beyond 500px!_x000D_
  </div>_x000D_
  <div class="subCont">_x000D_
    This column as well as the entire container works like a table. Isn't Amazing!!!_x000D_
  </div>_x000D_
</div>

DateTime.Now.ToShortDateString() will display only the date part

The reason #2 fails is because sys.modules['module'] does not exist (the import routine has its own scope, and cannot see the module local name), and there's no module module or package on-disk. Note that you can separate multiple imported names by commas.

from package.subpackage.module import attribute1, attribute2, attribute3

Also:

from package.subpackage import module
print module.attribute1

For those who just need to save some int value in the resources, you can do the following.

integers.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <integer name="default_value">100</integer>
</resources> 

Code

int defaultValue = getResources().getInteger(R.integer.default_value);

I think it depends on what OS you are using, Vista is much harder to attach to Services, because of the separation between sessions.

The two options I've used in the past are:

• Use GFlags (in the Debugging Tools for Windows) to setup a permanent debugger for a process. This exists in the "Image File Execution Options" registry key and is incredibly useful. I think you'll need to tweak the Service settings to enable "Interact with Desktop". I use this for all types of debugging, not just services.
• The other option, is to separate the code a bit, so that the service part is interchangable with a normal app startup. That way, you can use a simple command line flag, and launch as a process (rather than a Service), which makes it much easier to debug.

Hope this helps.

We will take the help of WebDriver action class and perform Right Click. the below is the syntax :

Actions action = new Actions(driver).contextClick(element);
action.build().perform();

Below are the Steps we have followed in the example:

1. Identify the element
2. Wait for the presence of Element
3. Now perform Context click
4. After that we need to select the required link.

package com.pack.rightclick;

    import org.openqa.selenium.Alert;
    import org.openqa.selenium.By;
    import org.openqa.selenium.NoSuchElementException;
    import org.openqa.selenium.StaleElementReferenceException;
    import org.openqa.selenium.WebDriver;
    import org.openqa.selenium.WebElement;
    import org.openqa.selenium.firefox.FirefoxDriver;
    import org.openqa.selenium.interactions.Actions;
    import org.openqa.selenium.support.ui.ExpectedConditions;
    import org.openqa.selenium.support.ui.WebDriverWait;
    import org.testng.Assert;
    import org.testng.annotations.AfterClass;
    import org.testng.annotations.BeforeClass;
    import org.testng.annotations.Test;

public class RightClickExample {

    WebDriver driver;

    String URL = "http://medialize.github.io/jQuery-contextMenu/demo.html";

    @BeforeClass
    public void Setup() {
        driver = new FirefoxDriver();
        driver.manage().window().maximize();
    }

    @Test
    public void rightClickTest() {
        driver.navigate().to(URL);
        By locator = By.cssSelector(".context-menu-one.box");
        WebDriverWait wait = new WebDriverWait(driver, 5);
        wait.until(ExpectedConditions.presenceOfElementLocated(locator)); 
        WebElement element=driver.findElement(locator);
        rightClick(element);
        WebElement elementEdit =driver.findElement(By.cssSelector(".context-menu-item.icon.icon-edit>span"));
        elementEdit.click();
        Alert alert=driver.switchTo().alert();
        String textEdit = alert.getText();
        Assert.assertEquals(textEdit, "clicked: edit", "Failed to click on Edit link");
    }

    public void rightClick(WebElement element) {
        try {
            Actions action = new Actions(driver).contextClick(element);
            action.build().perform();

            System.out.println("Sucessfully Right clicked on the element");
        } catch (StaleElementReferenceException e) {
            System.out.println("Element is not attached to the page document "
                    + e.getStackTrace());
        } catch (NoSuchElementException e) {
            System.out.println("Element " + element + " was not found in DOM "
                    + e.getStackTrace());
        } catch (Exception e) {
            System.out.println("Element " + element + " was not clickable "
                    + e.getStackTrace());
        }
    }

    @AfterClass
    public void tearDown() {
        driver.quit();
    }


}

In my case I simply forget to add in my fragment mRecyclerView.setAdapter(adapter)

Short answer:
_{Remove (from list results)}

results.RemoveAll(r => r.ID == 2); will remove the item with ID 2 in results (in place).

_{Filter (without removing from original list results):}

var filtered = result.Where(f => f.ID != 2); returns all items except the one with ID 2

Detailed answer:

I think .RemoveAll() is very flexible, because you can have a list of item IDs which you want to remove - please regard the following example.

If you have:

class myClass {
    public int ID; public string FirstName; public string LastName;
}

and assigned some values to results as follows:

var results = new List<myClass> {
    new myClass { ID=1, FirstName="Bill", LastName="Smith" },   // results[0]
    new myClass { ID=2, FirstName="John", LastName="Wilson" },  // results[1]
    new myClass { ID=3, FirstName="Doug", LastName="Berg" },    // results[2]
    new myClass { ID=4, FirstName="Bill", LastName="Wilson" }   // results[3]
};

Then you can define a list of IDs to remove:

var removeList = new List<int>() { 2, 3 };

And simply use this to remove them:

results.RemoveAll(r => removeList.Any(a => a==r.ID));

It will remove the items 2 and 3 and keep the items 1 and 4 - as specified by the removeList. Note that this happens in place, so there is no additional assigment required.

Of course, you can also use it on single items like:

results.RemoveAll(r => r.ID==4);

where it will remove Bill with ID 4 in our example.

A last thing to mention is that lists have an indexer, that is, they can also be accessed like a dynamic array, i.e. results[3] will give you the 4th element in the results list (because the first element has the index 0, the 2nd has index 1 etc).

So if you want to remove all entries where the first name is the same as in the 4th element of the results list, you can simply do it this way:

results.RemoveAll(r => results[3].FirstName == r.FirstName);

Note that afterwards, only John and Doug will remain in the list, Bill is removed (the first and last element in the example). Important is that the list will shrink automatically, so it has only 2 elements left - and hence the largest allowed index after executing RemoveAll in this example is 1
(which is results.Count() - 1).

Some Trivia: You can use this knowledge and create a local function

void myRemove()  { var last = results.Count() - 1; 
                   results.RemoveAll(r => results[last].FirstName == r.FirstName); }

What do you think will happen, if you call this function twice? Like

myRemove(); myRemove(); 

The first call will remove Bill at the first and last position, the second call will remove Doug and only John Wilson remains in the list.

DotNetFiddle: Run the demo

Note: Since C# Version 8, you can as well write results[^1] instead of var last = results.Count() - 1; and results[last]:

void myRemove() { results.RemoveAll(r => results[^1].FirstName == r.FirstName); }

So you would not need the local variable last anymore (see indices and ranges. For a list of all the new features in C#, look here).

This Worked for me ! For Angular 2 , Call child component method in parent component

Parent.component.ts

    import { Component, OnInit, ViewChild } from '@angular/core';
    import { ChildComponent } from '../child/child'; 
    @Component({ 
               selector: 'parent-app', 
               template: `<child-cmp></child-cmp>` 
              }) 
    export class parentComponent implements OnInit{ 
        @ViewChild(ChildComponent ) child: ChildComponent ; 

        ngOnInit() { 
           this.child.ChildTestCmp(); } 
}

Child.component.ts

import { Component } from '@angular/core';
@Component({ 
  selector: 'child-cmp', 
  template: `<h2> Show Child Component</h2><br/><p> {{test }}</p> ` 
})
export class ChildComponent {
  test: string;
  ChildTestCmp() 
  { 
    this.test = "I am child component!"; 
  }
 }

You can do it this way inside a program:

#include <sys/resource.h>

// core dumps may be disallowed by parent of this process; change that
struct rlimit core_limits;
core_limits.rlim_cur = core_limits.rlim_max = RLIM_INFINITY;
setrlimit(RLIMIT_CORE, &core_limits);

I looked at using KeychainItemWrapper (the ARC version) but I didn't find its Objective C wrapper as wholesome as desired.

I used this solution by Kishikawa Katsumi, which meant I wrote less code and didn't have to use casts to store NSString values.

Two examples of storing:

[UICKeyChainStore setString:@"kishikawakatsumi" forKey:@"username"];
[UICKeyChainStore setString:@"P455_w0rd$1$G$Z$" forKey:@"password"];

Two examples of retrieving

UICKeyChainStore *store = [UICKeyChainStore keyChainStore];
    // or
UICKeyChainStore *store = [UICKeyChainStore keyChainStoreWithService:@"YOUR_SERVICE"];

NSString *username = [store stringForKey:@"username"];
NSString *password = [store stringForKey:@"password"];

Try using the SQL_NO_CACHE (MySQL 5.7) option in your query. (MySQL 5.6 users click HERE )

eg.

SELECT SQL_NO_CACHE * FROM TABLE

This will stop MySQL caching the results, however be aware that other OS and disk caches may also impact performance. These are harder to get around.

I will soon released a new version of my app to support to galaxy ace.

You can download here: https://play.google.com/store/apps/details?id=droid.pr.coolflashlightfree

In order to solve your problem you should do this:

this._camera = Camera.open();     
this._camera.startPreview();
this._camera.autoFocus(new AutoFocusCallback() {
public void onAutoFocus(boolean success, Camera camera) {
}
});

Parameters params = this._camera.getParameters();
params.setFlashMode(Parameters.FLASH_MODE_ON);
this._camera.setParameters(params);

params = this._camera.getParameters();
params.setFlashMode(Parameters.FLASH_MODE_OFF);
this._camera.setParameters(params);

don't worry about FLASH_MODE_OFF because this will keep the light on, strange but it's true

to turn off the led just release the camera

Now there is an official way to add "PlantUML integration" plugin to your JetBrains product.

Installation steps please refer: https://stackoverflow.com/a/53387418/5320704

var obj = {
 webSiteName: 'StackOverFlow',
 find: 'anything',
 onDays: ['sun'     // Object "obj" contains array "onDays" 
            ,'mon',
            'tue',
            'wed',
            'thu',
            'fri',
            'sat',
             {name : "jack", age : 34},
              // array "onDays"contains array object "manyNames"
             {manyNames : ["Narayan", "Payal", "Suraj"]}, //                 
           ]
};

SHTML is a file extension that lets the web server know the file should be processed as using Server Side Includes (SSI).

(HTML is...you know what it is, and DHTML is Microsoft's name for Javascript+HTML+CSS or something).

You can use SSI to include a common header and footer in your pages, so you don't have to repeat code as much. Changing one included file updates all of your pages at once. You just put it in your HTML page as per normal.

It's embedded in a standard XML comment, and looks like this:

<!--#include virtual="top.shtml" -->

It's been largely superseded by other mechanisms, such as PHP includes, but some hosting packages still support it and nothing else.

You can read more in this Wikipedia article.

Use this code:

 HttpContext.Current.Server.MapPath("~")

Detailed Reference:

Server.MapPath specifies the relative or virtual path to map to a physical directory.

• Server.MapPath(".") returns the current physical directory of the file (e.g. aspx) being executed
• Server.MapPath("..") returns the parent directory
• Server.MapPath("~") returns the physical path to the root of the application
• Server.MapPath("/") returns the physical path to the root of the domain name (is not necessarily the same as the root of the application)

An example:

Let's say you pointed a web site application (http://www.example.com/) to

C:\Inetpub\wwwroot

and installed your shop application (sub web as virtual directory in IIS, marked as application) in

D:\WebApps\shop

For example, if you call Server.MapPath in following request:

http://www.example.com/shop/products/GetProduct.aspx?id=2342

then:

Server.MapPath(".") returns D:\WebApps\shop\products
Server.MapPath("..") returns D:\WebApps\shop
Server.MapPath("~") returns D:\WebApps\shop
Server.MapPath("/") returns C:\Inetpub\wwwroot
Server.MapPath("/shop") returns D:\WebApps\shop

If Path starts with either a forward (/) or backward slash (), the MapPath method returns a path as if Path were a full, virtual path.

If Path doesn't start with a slash, the MapPath method returns a path relative to the directory of the request being processed.

Note: in C#, @ is the verbatim literal string operator meaning that the string should be used "as is" and not be processed for escape sequences.

Footnotes

Server.MapPath(null) and Server.MapPath("") will produce this effect too.

I'm facing a similar problem. I'm using Query by Example and I want to sort the results by a custom field. In SQL I would do something like:

select pageNo, abs(pageNo - 434) as diff
from relA
where year = 2009
order by diff

It works fine without the order-by-clause. What I got is

Criteria crit = getSession().createCriteria(Entity.class);
crit.add(exampleObject);
ProjectionList pl = Projections.projectionList();
pl.add( Projections.property("id") );
pl.add(Projections.sqlProjection("abs(`pageNo`-"+pageNo+") as diff", new String[] {"diff"}, types ));
crit.setProjection(pl);

But when I add

crit.addOrder(Order.asc("diff"));

I get a org.hibernate.QueryException: could not resolve property: diff exception. Workaround with this does not work either.

PS: as I could not find any elaborate documentation on the use of QBE for Hibernate, all the stuff above is mainly trial-and-error approach

This is the solution I came up with:

#include "<stdlib.h>"

int32_t RandomRange(int32_t min, int32_t max) {
    return (rand() * (max - min + 1) / (RAND_MAX + 1)) + min;
}

This is a bucket solution, conceptually similar to the solutions that use rand() / RAND_MAX to get a floating point range between 0-1 and then round that into a bucket. However, it uses purely integer math, and takes advantage of integer division flooring to round down the value to the nearest bucket.

It makes a few assumptions. First, it assumes that RAND_MAX * (max - min + 1) will always fit within an int32_t. If RAND_MAX is 32767 and 32 bit int calculations are used, the the maximum range you can have is 32767. If your implementation has a much larger RAND_MAX, you can overcome this by using a larger integer (like int64_t) for the calculation. Secondly, if int64_t is used but RAND_MAX is still 32767, at ranges greater than RAND_MAX you will start to get "holes" in the possible output numbers. This is probably the biggest issue with any solution derived from scaling rand().

Testing over a huge number of iterations nevertheless shows this method to be very uniform for small ranges. However, it is possible (and likely) that mathematically this has some small bias and possibly develops issues when the range approaches RAND_MAX. Test it for yourself and decide if it meets your needs.

I'm a proponent of not assuming the best solution and testing it. Below are some modifications I did to create simple classes of examples by both @igor-chubin and @user448810. First off let me say it's all great information, thank you guys. But I have to acknowledge @user448810 for his clever solution, which turns out to be the fastest by far (of those I tested). So kudos to you, sir! In all examples I use a values of 1 million (1,000,000) as n.

Please feel free to try the code out.

Good luck!

Method 1 as described by Igor Chubin:

def primes_method1(n):
    out = list()
    for num in range(1, n+1):
        prime = True
        for i in range(2, num):
            if (num % i == 0):
                prime = False
        if prime:
            out.append(num)
    return out

Benchmark: Over 272+ seconds

Method 2 as described by Igor Chubin:

def primes_method2(n):
    out = list()
    for num in range(1, n+1):
        if all(num % i != 0 for i in range(2, num)):
            out.append(num)
    return out

Benchmark: 73.3420000076 seconds

Method 3 as described by Igor Chubin:

def primes_method3(n):
    out = list()
    for num in range(1, n+1):
        if all(num % i != 0 for i in range(2, int(num**.5 ) + 1)):
            out.append(num)
    return out

Benchmark: 11.3580000401 seconds

Method 4 as described by Igor Chubin:

def primes_method4(n):
    out = list()
    out.append(2)
    for num in range(3, n+1, 2):
        if all(num % i != 0 for i in range(2, int(num**.5 ) + 1)):
            out.append(num)
    return out

Benchmark: 8.7009999752 seconds

Method 5 as described by user448810 (which I thought was quite clever):

def primes_method5(n):
    out = list()
    sieve = [True] * (n+1)
    for p in range(2, n+1):
        if (sieve[p]):
            out.append(p)
            for i in range(p, n+1, p):
                sieve[i] = False
    return out

Benchmark: 1.12000012398 seconds

Notes: Solution 5 listed above (as proposed by user448810) turned out to be the fastest and honestly quiet creative and clever. I love it. Thanks guys!!

EDIT: Oh, and by the way, I didn't feel there was any need to import the math library for the square root of a value as the equivalent is just (n**.5). Otherwise I didn't edit much other then make the values get stored in and output array to be returned by the class. Also, it would probably be a bit more efficient to store the results to a file than verbose and could save a lot on memory if it was just one at a time but would cost a little bit more time due to disk writes. I think there is always room for improvement though. So hopefully the code makes sense guys.

2021 EDIT: I know it's been a really long time but I was going back through my Stackoverflow after linking it to my Codewars account and saw my recently accumulated points, which which was linked to this post. Something I read in the original poster caught my eye for @user448810, so I decided to do a slight modification mentioned in the original post by filtering out odd values before appending the output array. The results was much better performance for both the optimization as well as latest version of Python 3.8 with a result of 0.723 seconds (prior code) vs 0.504 seconds using 1,000,000 for n.

def primes_method5(n):
    out = list()
    sieve = [True] * (n+1)
    for p in range(2, n+1):
        if (sieve[p] and sieve[p]%2==1):
            out.append(p)
            for i in range(p, n+1, p):
                sieve[i] = False
    return out

Nearly five years later, I might know a bit more but I still just love Python, and it's kind of crazy to think it's been that long. The post honestly feels like it was made a short time ago and at the time I had only been using python about a year I think. And it still seems relevant. Crazy. Good times.

Add the following code to the .htaccess file:

Options +SymLinksIfOwnerMatch
RewriteEngine On
RewriteCond %{SERVER_PORT} !=443
RewriteRule ^ https://[your domain name]%{REQUEST_URI} [R,L]

Where [your domain name] is your website's domain name.

You can also redirect specific folders off of your domain name by replacing the last line of the code above with:

RewriteRule ^ https://[your domain name]/[directory name]%{REQUEST_URI} [R,L]

Found the solution after some searching.

You need to add a <meta> tag in your <head> containing name="theme-color", with your HEX code as the content value. For example:

<meta name="theme-color" content="#999999" />

Update:

If the android device has native dark-mode enabled, then this meta tag is ignored.

Chrome for Android does not use the color on devices with native dark-mode enabled.

source: https://caniuse.com/#search=theme-color

204 No Content

The server has fulfilled the request but does not need to return an entity-body, and might want to return updated metainformation. The response MAY include new or updated metainformation in the form of entity-headers, which if present SHOULD be associated with the requested variant.

According to the RFC part for the status code 204, it seems to me a valid choice for a GET request.

A 404 Not Found, 200 OK with empty body and 204 No Content have completely different meaning, sometimes we can't use proper status code but bend the rules and they will come back to bite you one day or later. So, if you can use proper status code, use it!

I think the choice of GET or POST is very personal as both of them will do the work but I would recommend you to keep a POST instead of a GET, for two reasons:

• You want the other part (the servlet if I understand correctly) to perform an action not retrieve some data from it.
• By default GET requests are cacheable if there are no parameters present in the URL, a POST is not.

When do I need to declare them myself?

The Rule of Three states that if you declare any of a

1. copy constructor
2. copy assignment operator
3. destructor

then you should declare all three. It grew out of the observation that the need to take over the meaning of a copy operation almost always stemmed from the class performing some kind of resource management, and that almost always implied that

• whatever resource management was being done in one copy operation probably needed to be done in the other copy operation and

• the class destructor would also be participating in management of the resource (usually releasing it). The classic resource to be managed was memory, and this is why all Standard Library classes that manage memory (e.g., the STL containers that perform dynamic memory management) all declare “the big three”: both copy operations and a destructor.

A consequence of the Rule of Three is that the presence of a user-declared destructor indicates that simple member wise copy is unlikely to be appropriate for the copying operations in the class. That, in turn, suggests that if a class declares a destructor, the copy operations probably shouldn’t be automatically generated, because they wouldn’t do the right thing. At the time C++98 was adopted, the significance of this line of reasoning was not fully appreciated, so in C++98, the existence of a user declared destructor had no impact on compilers’ willingness to generate copy operations. That continues to be the case in C++11, but only because restricting the conditions under which the copy operations are generated would break too much legacy code.

How can I prevent my objects from being copied?

Declare copy constructor & copy assignment operator as private access specifier.

class MemoryBlock
{
public:

//code here

private:
MemoryBlock(const MemoryBlock& other)
{
   cout<<"copy constructor"<<endl;
}

// Copy assignment operator.
MemoryBlock& operator=(const MemoryBlock& other)
{
 return *this;
}
};

int main()
{
   MemoryBlock a;
   MemoryBlock b(a);
}

In C++11 onwards you can also declare copy constructor & assignment operator deleted

class MemoryBlock
{
public:
MemoryBlock(const MemoryBlock& other) = delete

// Copy assignment operator.
MemoryBlock& operator=(const MemoryBlock& other) =delete
};


int main()
{
   MemoryBlock a;
   MemoryBlock b(a);
}

There are many ways you can import Text file to the current sheet. Here are three (including the method that you are using above)

1. Using a QueryTable
2. Open the text file in memory and then write to the current sheet and finally applying Text To Columns if required.
3. If you want to use the method that you are currently using then after you open the text file in a new workbook, simply copy it over to the current sheet using Cells.Copy

Using a QueryTable

Here is a simple macro that I recorded. Please amend it to suit your needs.

Sub Sample()
    With ActiveSheet.QueryTables.Add(Connection:= _
        "TEXT;C:\Sample.txt", Destination:=Range("$A$1") _
        )
        .Name = "Sample"
        .FieldNames = True
        .RowNumbers = False
        .FillAdjacentFormulas = False
        .PreserveFormatting = True
        .RefreshOnFileOpen = False
        .RefreshStyle = xlInsertDeleteCells
        .SavePassword = False
        .SaveData = True
        .AdjustColumnWidth = True
        .RefreshPeriod = 0
        .TextFilePromptOnRefresh = False
        .TextFilePlatform = 437
        .TextFileStartRow = 1
        .TextFileParseType = xlDelimited
        .TextFileTextQualifier = xlTextQualifierDoubleQuote
        .TextFileConsecutiveDelimiter = False
        .TextFileTabDelimiter = True
        .TextFileSemicolonDelimiter = False
        .TextFileCommaDelimiter = True
        .TextFileSpaceDelimiter = False
        .TextFileColumnDataTypes = Array(1, 1, 1, 1, 1, 1)
        .TextFileTrailingMinusNumbers = True
        .Refresh BackgroundQuery:=False
    End With
End Sub

Open the text file in memory

Sub Sample()
    Dim MyData As String, strData() As String

    Open "C:\Sample.txt" For Binary As #1
    MyData = Space$(LOF(1))
    Get #1, , MyData
    Close #1
    strData() = Split(MyData, vbCrLf)
End Sub

Once you have the data in the array you can export it to the current sheet.

Using the method that you are already using

Sub Sample()
    Dim wbI As Workbook, wbO As Workbook
    Dim wsI As Worksheet

    Set wbI = ThisWorkbook
    Set wsI = wbI.Sheets("Sheet1") '<~~ Sheet where you want to import

    Set wbO = Workbooks.Open("C:\Sample.txt")

    wbO.Sheets(1).Cells.Copy wsI.Cells

    wbO.Close SaveChanges:=False
End Sub

FOLLOWUP

You can use the Application.GetOpenFilename to choose the relevant file. For example...

Sub Sample()
    Dim Ret

    Ret = Application.GetOpenFilename("Prn Files (*.prn), *.prn")

    If Ret <> False Then
        With ActiveSheet.QueryTables.Add(Connection:= _
        "TEXT;" & Ret, Destination:=Range("$A$1"))

            '~~> Rest of the code

        End With
    End If
End Sub

Let's project P is importing custom library L, then you must add L into

P -> Build Phases -> Embed Frameworks -> +. That works for me.

The first version is a null object while the second is an Array object with zero elements.

Null may mean here for example that no location is available for that user, no location has been requested or that some restrictions apply. Hard to tell with no reference to the API.

You can use the struct's pack:

In [11]: struct.pack(">I", 1)
Out[11]: '\x00\x00\x00\x01'

The ">" is the byte-order (big-endian) and the "I" is the format character. So you can be specific if you want to do something else:

In [12]: struct.pack("<H", 1)
Out[12]: '\x01\x00'

In [13]: struct.pack("B", 1)
Out[13]: '\x01'

This works the same on both python 2 and python 3.

Note: the inverse operation (bytes to int) can be done with unpack.

On macOS, use subprocess.run to pipe your text to pbcopy:

import subprocess 
data = "hello world"
subprocess.run("pbcopy", universal_newlines=True, input=data)

It will copy "hello world" to the clipboard.

I think what you're trying to do is:

-(void) score2 {
    [self score];
}

The [object message] syntax is the normal way to call a method in objective-c. I think the @selector syntax is used when the method to be called needs to be determined at run-time, but I don't know objective-c well enough to give you more information on that.

Using dt.weekday_name is deprecated since pandas 0.23.0, instead, use dt.day_name():

df = pd.DataFrame({'my_dates':['2015-01-01','2015-01-02','2015-01-03'],'myvals':[1,2,3]})
df['my_dates'] = pd.to_datetime(df['my_dates'])

df['my_dates'].dt.day_name()

0    Thursday
1      Friday
2    Saturday
Name: my_dates, dtype: object

I had this issue too, also running on an emulator.. The same message was showing up on Logcat, but it wasn't affecting the functionality of the app. But it was annoying, and I don't like seeing errors on the log that I don't understand.

Anyway, I got rid of the message by increasing the RAM on the emulator.

I find the jQuery select box manipulation plugin useful for this type of thing.

You can easily remove an item by index, value, or regex.

removeOption(index/value/regex/array[, selectedOnly])

Remove an option by
- index: $("#myselect2").removeOption(0);
- value: $("#myselect").removeOption("Value");
- regular expression: $("#myselect").removeOption(/^val/i);
- array $("#myselect").removeOption(["myselect_1", "myselect_2"]);

To remove all options, you can do $("#myselect").removeOption(/./);.

If you want authentication try domainname\administrator as the username.

If you don't want authentication then remove all the tickboxes in the authenticated access section of the direcory security > edit window.

Note that git checkout --ours|--theirs will overwrite the files entirely, by choosing either theirs or ours version, which might be or might not be what you want to do (if you have any non-conflicted changes coming from the other side, they will be lost).

If instead you want to perform a three-way merge on the file, and only resolve the conflicted hunks using --ours|--theirs, while keeping non-conflicted hunks from both sides in place, you may want to resort to git merge-file; see details in this answer.

Can you try this, readfile need the full file path.

        $filename='/pdf/jobs/pdffile.pdf';            
        $url_download = BASE_URL . RELATIVE_PATH . $filename;            

        //header("Content-type:application/pdf");   
        header("Content-type: application/octet-stream");                       
        header("Content-Disposition:inline;filename='".basename($filename)."'");            
        header('Content-Length: ' . filesize($filename));
        header("Cache-control: private"); //use this to open files directly                     
        readfile($filename);

What about

str1.localeCompare(str2)

Proper manual logical XOR implementation depends on how closely you want to mimic the general behavior of other logical operators (|| and &&) with your XOR. There are two important things about these operators: 1) they guarantee short-circuit evaluation, 2) they introduce a sequence point, 3) they evaluate their operands only once.

XOR evaluation, as you understand, cannot be short-circuited since the result always depends on both operands. So 1 is out of question. But what about 2? If you don't care about 2, then with normalized (i.e. bool) values operator != does the job of XOR in terms of the result. And the operands can be easily normalized with unary !, if necessary. Thus !A != !B implements the proper XOR in that regard.

But if you care about the extra sequence point though, neither != nor bitwise ^ is the proper way to implement XOR. One possible way to do XOR(a, b) correctly might look as follows

a ? !b : b

This is actually as close as you can get to making a homemade XOR "similar" to || and &&. This will only work, of course, if you implement your XOR as a macro. A function won't do, since the sequencing will not apply to function's arguments.

Someone might say though, that the only reason of having a sequence point at each && and || is to support the short-circuited evaluation, and thus XOR does not need one. This makes sense, actually. Yet, it is worth considering having a XOR with a sequence point in the middle. For example, the following expression

++x > 1 && x < 5

has defined behavior and specificed result in C/C++ (with regard to sequencing at least). So, one might reasonably expect the same from user-defined logical XOR, as in

XOR(++x > 1, x < 5)

while a !=-based XOR doesn't have this property.

I was getting the error “gcc: error: x86_64-linux-gnu-gcc: No such file or directory” as I was trying to build a simple c-extension module to run in Python. I tried all the things above to no avail, and finally realized that I had an error in my module.c code! So I thought it would be helpful to add that, if you are getting this error message but you have python-dev and everything correctly installed, you should look for issues in your code.

What worked for me was to import the project with "File -> New -> Project from Version Control" then choose your online source (GitHub for example). This way all the .gradle files were created in the import.

A data contract is a formal agreement between a service and a client that abstractly describes the data to be exchanged. That is, to communicate, the client and the service do not have to share the same types, only the same data contracts. A data contract precisely defines, for each parameter or return type, what data is serialized (turned into XML) to be exchanged.

Windows Communication Foundation (WCF) uses a serialization engine called the Data Contract Serializer by default to serialize and deserialize data (convert it to and from XML). All .NET Framework primitive types, such as integers and strings, as well as certain types treated as primitives, such as DateTime and XmlElement, can be serialized with no other preparation and are considered as having default data contracts. Many .NET Framework types also have existing data contracts.

You can find the full article here.

CodePro was recently released by Google with the Eclipse project. It is free and highly effective. The plugin has a 'Find Dead Code' feature with one/many entry point(s). Works pretty well.

if you are using IIS, maybe you should try
"application pools" --> "DefaultAppPool" --> "application pools default value" --> "32-Bit-application-activ" --> set false

You can use the following to convert string to int:

• CInt(String) for ints
• CDec(String) for decimals

For details refer to Type Conversion Functions (Visual Basic).

Take a backup of your htdocs and data folder (subfolder of MySQL folder), reinstall upgraded version and replace those folders.

Note: In case you have changed config files like PHP (php.ini), Apache (httpd.conf) or any other, please take back up of those files as well and replace them with newly installed version.

You should use the OpenFileDialog class like this

Dim fd As OpenFileDialog = New OpenFileDialog() 
Dim strFileName As String

fd.Title = "Open File Dialog"
fd.InitialDirectory = "C:\"
fd.Filter = "All files (*.*)|*.*|All files (*.*)|*.*"
fd.FilterIndex = 2
fd.RestoreDirectory = True

If fd.ShowDialog() = DialogResult.OK Then
   strFileName = fd.FileName
End If

Then you can use the File class.

I had this issue and realised that whilst I did have libxml2 installed, I didn't have the necessary development libraries required by the python package. Installing them solved the problem:

sudo apt-get install libxml2-dev libxslt1-dev
sudo pip install lxml

As some people answered above:

If you want to use the variable later, better use:

int year;

year = Calendar.getInstance().get(Calendar.YEAR);

If you need the year for just a condition you better use:

Calendar.getInstance().get(Calendar.YEAR)

For example using it in a do while that checks introduced year is not less than the current year-200 or more than the current year (Could be birth year):

import java.util.Calendar;
import java.util.Scanner;

public static void main (String[] args){

    Scanner scannernumber = new Scanner(System.in);
    int year;

    /*Checks that the year is not higher than the current year, and not less than the current year - 200 years.*/

    do{
        System.out.print("Year (Between "+((Calendar.getInstance().get(Calendar.YEAR))-200)+" and "+Calendar.getInstance().get(Calendar.YEAR)+") : ");
        year = scannernumber.nextInt();
    }while(year < ((Calendar.getInstance().get(Calendar.YEAR))-200) || year > Calendar.getInstance().get(Calendar.YEAR));
}

A Java String is internally always encoded in UTF-16 - but you really should think about it like this: an encoding is a way to translate between Strings and bytes.

So if you have an encoding problem, by the time you have String, it's too late to fix. You need to fix the place where you create that String from a file, DB or network connection.

You can set the state of the checkbox based on the value:

$('#your-checkbox').prop('checked', value == 1);

U can consider using boost::bimap that might gave you a feeling that map is sorted by key and by values simultaneously (this is not what really happens, though)

From my experience ten minutes ago this situation can happen where there are more than one category but with a lot of NAs. Taking the Kaggle Houseprice Dataset as example, if you loaded data and run a simple regression,

train.df = read.csv('train.csv')
lm1 = lm(SalePrice ~ ., data = train.df)

you will get same error. I also tried testing the number of levels of each factor, but none of them says it has less than 2 levels.

cols = colnames(train.df)
for (col in cols){
  if(is.factor(train.df[[col]])){
    cat(col, ' has ', length(levels(train.df[[col]])), '\n')
  }
}

So after a long time I used summary(train.df) to see details of each col, and removed some, and it finally worked:

train.df = subset(train.df, select=-c(Id, PoolQC,Fence, MiscFeature, Alley, Utilities))
lm1 = lm(SalePrice ~ ., data = train.df)

and removing any one of them the regression fails to run again with same error (which I have tested myself).

And above attributes generally have 1400+ NAs and 10 useful values, so you might want to remove these garbage attributes, even they have 3 or 4 levels. I guess a function counting how many NAs in each column will help.

The approach I would take is: when reading the chapters from the database, instead of a collection of chapters, use a collection of books. This will have your chapters organised into books and you'll be able to use information from both classes to present the information to the user (you can even present it in a hierarchical way easily when using this approach).

If your table columns contains duplicate data and If you directly apply row_ number() and create PARTITION on column, there is chance to have result in duplicated row and with row number value.

To remove duplicate row, you need one more INNER query in from clause which eliminates duplicate rows and then it will give output to it's foremost outer FROM clause where you can apply PARTITION and ROW_NUMBER ().

As like below example:

SELECT DATE, STATUS, TITLE, ROW_NUMBER() OVER (PARTITION BY DATE, STATUS, TITLE ORDER BY QUANTITY ASC) AS Row_Num
FROM (
     SELECT DISTINCT <column names>...
) AS tbl

When you run php-cgi.exe from the dos command line, you will get the missing MSVCR110.dll pop up message.

Like Ben said, Get the x86 download for the dll here: http://www.microsoft.com/en-us/download/details.aspx?id=30679

Try out with mImageCaptureUri.getPath(); By Below Way :

if (requestCode == CAMERA_REQUEST && resultCode == RESULT_OK) {  

            //Get your Image Path
            String Path=mImageCaptureUri.getPath();

            Bitmap photo = (Bitmap) data.getExtras().get("data"); 
            imageView.setImageBitmap(photo);
            knop.setVisibility(Button.VISIBLE);
            System.out.println(mImageCaptureUri);
        }  

I had the same problem with System.Web.Http.WebHost, Version=5.2.6.0 being referenced but the latest NuGet package was 5.2.7.0. I edited the web.config files, re-installed the NuGet package, then edited the visual studio project files for all of my projects to make sure no references to 5.2.6.0 persisted. Even after all this, the problem persisted.

Then I looked in the bin folder for the project that was throwing the exception, where I found a DLL for one of my other projects that is not a dependency and should never have been there. I deleted the offending DLL (which had been compiled using the 5.2.6.0 version of System.Web.Http.WebHost), rebuilt the troublesome project, and now it is working.

In the Windows Command Prompt the ^ is used to escape the next character on the command line. (Like \ is used in strings.) Characters that need to be used in the command line as they are should have a ^ prefixed to them, hence that's why it works for the newline.

For reference the characters that need escaping (if specified as command arguments and not within quotes) are: &|()

So the equivalent of your linux example would be (the More? being a prompt):

C:\> dir ^
More? C:\Windows

Bash has built in features to access the last command executed. But that's the last whole command (e.g. the whole case command), not individual simple commands like you originally requested.

!:0 = the name of command executed.

!:1 = the first parameter of the previous command

!:* = all of the parameters of the previous command

!:-1 = the final parameter of the previous command

!! = the previous command line

etc.

So, the simplest answer to the question is, in fact:

echo !!

...alternatively:

echo "Last command run was ["!:0"] with arguments ["!:*"]"

Try it yourself!

echo this is a test
echo !!

In a script, history expansion is turned off by default, you need to enable it with

set -o history -o histexpand

The best we could come up with is this:

^\\$?(([1-9](\\d*|\\d{0,2}(,\\d{3})*))|0)(\\.\\d{1,2})?$

I realize it might seem too much, but as far as I can test it matches anything that a human eye would accept as valid currency value and weeds out everything else.

It matches these:

1 => true
1.00 => true
$1 => true
$1000 => true
0.1 => true
1,000.00 => true
$1,000,000 => true
5678 => true

And weeds out these:

1.001 => false
02.0 => false
22,42 => false
001 => false
192.168.1.2 => false
, => false
.55 => false
2000,000 => false

I would use the DATE_DIFF function to provide this value as below:

SELECT dtCreated
    , bActive
    , dtLastPaymentAttempt
    , dtLastUpdated
    , dtLastVisit
    , DATEDIFF(d, dtLastUpdated, dtCreated) AS Difference
FROM Customers
WHERE (bActive = 'true') 
    AND (dtLastUpdated > CONVERT(DATETIME, '2012-01-0100:00:00', 102))

EDIT: IF using MySQL you omit the 'd' leaving you with

DATEDIFF(dtLastUpdated, dtCreated) AS Difference

I am a little bit surprised nobody mentioned

sp_help 'mytable'

May be it's obvious for expert users of MYSQL but I wasted some time while trying to figure out default value would not export functions. So I thought to mention here that --routines param needs to be set to true to make it work.

mysqldump --routines=true -u <user> my_database > my_database.sql

Again with the commons collections API: You get the "checker" type code when you Implement the Predicate Separately:-

public class CatPredicate implements Predicate {

    private int age; 


    public CatPredicate(int age) {
        super();
        this.age = age;
    }


    @Override
    public boolean evaluate(Object o) {
        Cat c (Cat)o;
        return c.getAge()==this.age;
    }

}

which gets used as :-

CollectionUtils.filter(catCollectionToFilter, new CatPredicate(3))

To close your current window using JS, do this. First open the current window to trick your current tab into thinking it has been opened by a script. Then close it using window.close(). The below script should go into the parent window, not the child window. You could run this after running the script to open the child.

<script type="text/javascript">
    window.open('','_parent',''); 
    window.close();
</script>

I had this problem as well on an OSX machine. I discovered that rails was not installed... which surprised me as I thought OSX always came with Rails. To install rails

• sudo gem install rails
• to install jekyll I also needed sudo
• sudo gem install jekyll bundler
• cd ~/Sites
• jekyll new <foldername>
• cd <foldername> OR cd !$ (that is magic ;)
• bundle install
• bundle exec jekyll serve
• Then in your browser just go to http://127.0.0.1:4000/ and it really should be running

try to disabled Dark Mode on Mysql Workbench run this on terminal

defaults write com.oracle.workbench.MySQLWorkbench NSRequiresAquaSystemAppearance -bool yes

Add just these two lines before the datetime property in your model

[DataType(DataType.Date)] 
[DisplayFormat(DataFormatString = "{0:yyyy-MM-dd}", ApplyFormatInEditMode = true)]

and result will be :

One option is to disable the host key requirement:

import pysftp
cnopts = pysftp.CnOpts()
cnopts.hostkeys = None   
with pysftp.Connection(host, username, password, cnopts=cnopts) as sftp:
    sftp.put(local_path, remote_path)

You can find more info about that here: https://stackoverflow.com/a/38355117/1060738

Important note:

By setting cnopts.hostkeys=None you'll lose the protection against Man-in-the-middle attacks by doing so. Use @martin-prikryl answer to avoid that.

I agree with posters listing OpenOffice as a high-fidelity import/export facility of word / pdf docs with a Java API and it also works across platforms. OpenOffice import/export filters are pretty powerful and preserve most formatting during conversion to various formats including PDF. Docmosis and JODReports value-add to make life easier than learning the OpenOffice API directly which can be challenging because of the style of the UNO api and the crash-related bugs.

imo there's a better answer for this using Snippets

Create a snippet with a definition like this:

"name_of_your_snippet": {
    "scope": "javascript,html",
    "prefix": "name_of_your_snippet",
    "body": "<${0:b}>$TM_SELECTED_TEXT</${0:b}>"
}

Then bind it to a key in keybindings.json E.g. like this:

{ 
    "key": "alt+w",
    "command": "editor.action.insertSnippet",
    "args": { "name": "name_of_your_snippet" }
}

I think this should give you exactly the same result as htmltagwrap but without having to install an extension.

It will insert tags around selected text, defaults to <b> tag & selects the tag so typing lets you change it.

If you want to use a different default tag just change the b in the body property of the snippet.

I actually used this script to replace a line of code in the cron file on our company's UNIX servers awhile back. We executed it as normal shell script and had no problems:

#Create temporary file with new line in place
cat /dir/file | sed -e "s/the_original_line/the_new_line/" > /dir/temp_file
#Copy the new file over the original file
mv /dir/temp_file /dir/file

This doesn't go by line number, but you can easily switch to a line number based system by putting the line number before the s/ and placing a wildcard in place of the_original_line.

You can't get a path to file from WhatsApp. They don't expose it now. The only thing you can get is InputStream:

InputStream is = getContentResolver().openInputStream(Uri.parse("content://com.whatsapp.provider.media/item/16695"));

Using is you can show a picture from WhatsApp in your app.

We can change this yyyy-mm-dd format to dd-mm-yyyy in javascript by using split method.

let dateyear= "2020-03-18";
let arr = dateyear.split('-') //now we get array of these and we can made in any format as we want
let dateFormat = arr[2] + "-" + arr[1] + "-" + arr[0]  //In dd-mm-yyyy format

After I set core.autocrlf=true I was getting "LF will be replaced by CRLF" (note not "CRLF will be replaced by LF") when I was git adding (or perhaps it was it on git commit?) edited files in windows on a repository (that does use LF) that was checked out before I set core.autocrlf=true.

I made a new checkout with core.autocrlf=true and now I'm not getting those messages.

Your interpretation sounds pretty good to me... A library could be anything that's compiled and self-contained for re-use in other code, there's literally no restriction on its content.

A framework on the other hand is expected to have a range of facilities for use in some specific arena of application development, just like your example, MVC.

//defines an array of 280 pointers (1120 or 2240 bytes)
int  *pointer1 [280];

//defines a pointer (4 or 8 bytes depending on 32/64 bits platform)
int (*pointer2)[280];      //pointer to an array of 280 integers
int (*pointer3)[100][280]; //pointer to an 2D array of 100*280 integers

Using pointer2 or pointer3 produce the same binary except manipulations as ++pointer2 as pointed out by WhozCraig.

I recommend using typedef (producing same binary code as above pointer3)

typedef int myType[100][280];
myType *pointer3;

Note: Since C++11, you can also use keyword using instead of typedef

using myType = int[100][280];
myType *pointer3;

in your example:

myType *pointer;                // pointer creation
pointer = &tab1;                // assignation
(*pointer)[5][12] = 517;        // set (write)
int myint = (*pointer)[5][12];  // get (read)

Note: If the array tab1 is used within a function body => this array will be placed within the call stack memory. But the stack size is limited. Using arrays bigger than the free memory stack produces a stack overflow crash.

The full snippet is online-compilable at gcc.godbolt.org

int main()
{
    //defines an array of 280 pointers (1120 or 2240 bytes)
    int  *pointer1 [280];
    static_assert( sizeof(pointer1) == 2240, "" );

    //defines a pointer (4 or 8 bytes depending on 32/64 bits platform)
    int (*pointer2)[280];      //pointer to an array of 280 integers
    int (*pointer3)[100][280]; //pointer to an 2D array of 100*280 integers  
    static_assert( sizeof(pointer2) == 8, "" );
    static_assert( sizeof(pointer3) == 8, "" );

    // Use 'typedef' (or 'using' if you use a modern C++ compiler)
    typedef int myType[100][280];
    //using myType = int[100][280];

    int tab1[100][280];

    myType *pointer;                // pointer creation
    pointer = &tab1;                // assignation
    (*pointer)[5][12] = 517;        // set (write)
    int myint = (*pointer)[5][12];  // get (read)

    return myint;
}

There is a much easier solution, if you take advantage of the built-in reverseObjectEnumerator method on NSArray, and the allObjects method of NSEnumerator:

NSArray* reversedArray = [[startArray reverseObjectEnumerator] allObjects];

allObjects is documented as returning an array with the objects that have not yet been traversed with nextObject, in order:

This array contains all the remaining objects of the enumerator in enumerated order.

You can do that by specifying the ref

EDIT: In react v16.8.0 with function component, you can define a ref with useRef. Note that when you specify a ref on a function component, you need to use React.forwardRef on it to forward the ref to the DOM element of use useImperativeHandle to to expose certain functions from within the function component

Ex:

const Child1 = React.forwardRef((props, ref) => {
    return <div ref={ref}>Child1</div> 
});

const Child2 = React.forwardRef((props, ref) => {
    const handleClick= () =>{};
    useImperativeHandle(ref,() => ({
       handleClick
    }))
    return <div>Child2</div> 
});
const App = () => {
    const child1 = useRef(null);
    const child2 = useRef(null);

    return (
        <>
           <Child1 ref={child1} />
           <Child1 ref={child1} />
        </>
    )
}

EDIT:

In React 16.3+, use React.createRef() to create your ref:

class MyComponent extends React.Component {
  constructor(props) {
    super(props);
    this.myRef = React.createRef();
  }
  render() {
    return <div ref={this.myRef} />;
  }
}

In order to access the element, use:

const node = this.myRef.current;

DOC for using React.createRef()

EDIT

However facebook advises against it because string refs have some issues, are considered legacy, and are likely to be removed in one of the future releases.

From the docs:

Legacy API: String Refs

If you worked with React before, you might be familiar with an older API where the ref attribute is a string, like "textInput", and the DOM node is accessed as this.refs.textInput. We advise against it because string refs have some issues, are considered legacy, and are likely to be removed in one of the future releases. If you're currently using this.refs.textInput to access refs, we recommend the callback pattern instead.

A recommended way for React 16.2 and earlier is to use the callback pattern:

<Progressbar completed={25} id="Progress1" ref={(input) => {this.Progress[0] = input }}/>

<h2 class="center"></h2>

<Progressbar completed={50} id="Progress2" ref={(input) => {this.Progress[1] = input }}/>

  <h2 class="center"></h2>

<Progressbar completed={75} id="Progress3" ref={(input) => {this.Progress[2] = input }}/>

DOC for using callback

Even older versions of react defined refs using string like below

<Progressbar completed={25} id="Progress1" ref="Progress1"/>

    <h2 class="center"></h2>

    <Progressbar completed={50} id="Progress2" ref="Progress2"/>

      <h2 class="center"></h2>

    <Progressbar completed={75} id="Progress3" ref="Progress3"/>

In order to get the element just do

var object = this.refs.Progress1;

Remember to use this inside an arrow function block like:

print = () => {
  var object = this.refs.Progress1;  
}

and so on...

Here is a query to find all product sales that were running during the month of August

• Find Product_sales there were active during the month of August
• Include anything that started before the end of August
• Exclude anything that ended before August 1st

Also adds a case statement to validate the query

SELECT start_date, 
       end_date, 
       CASE 
         WHEN start_date <= '2015-08-31' THEN 'true' 
         ELSE 'false' 
       END AS started_before_end_of_month, 
       CASE 
         WHEN NOT end_date <= '2015-08-01' THEN 'true' 
         ELSE 'false' 
       END AS did_not_end_before_begining_of_month 
FROM   product_sales 
WHERE  start_date <= '2015-08-31' 
       AND end_date >= '2015-08-01' 
ORDER  BY start_date; 

Try this:

if (value instanceof Array) {
alert('value is Array!');
} else {
alert('Not an array');
}

SetTimeout is used to make your set of code to execute after a specified time period so for your requirements its better to use setInterval because that will call your function every time at a specified time interval.

JAXB is simple to use and is included in Java 6 SE. With JAXB, or other XML data binding such as Simple, you don't have to handle the XML yourself, most of the work is done by the library. The basic usage is to add annotation to your existing POJO. These annotation are then used to generate an XML Schema for you data and also when reading/writing your data from/to a file.

You can use Jasypt to encrypt properties, so you could have your property like this:

db.password=ENC(XcBjfjDDjxeyFBoaEPhG14wEzc6Ja+Xx+hNPrJyQT88=)

Jasypt allows you to encrypt your properties using different algorithms, once you get the encrypted property you put inside the ENC(...). For instance, you can encrypt this way through Jasypt using the terminal:

encrypted-pwd$ java -cp ~/.m2/repository/org/jasypt/jasypt/1.9.2/jasypt-1.9.2.jar  org.jasypt.intf.cli.JasyptPBEStringEncryptionCLI input="contactspassword" password=supersecretz algorithm=PBEWithMD5AndDES

----ENVIRONMENT-----------------

Runtime: Oracle Corporation Java HotSpot(TM) 64-Bit Server VM 24.45-b08



----ARGUMENTS-------------------

algorithm: PBEWithMD5AndDES
input: contactspassword
password: supersecretz



----OUTPUT----------------------

XcBjfjDDjxeyFBoaEPhG14wEzc6Ja+Xx+hNPrJyQT88=

To easily configure it with Spring Boot you can use its starter jasypt-spring-boot-starter with group ID com.github.ulisesbocchio

Keep in mind, that you will need to start your application using the same password you used to encrypt the properties. So, you can start your app this way:

mvn -Djasypt.encryptor.password=supersecretz spring-boot:run

Or using the environment variable (thanks to spring boot relaxed binding):

export JASYPT_ENCRYPTOR_PASSWORD=supersecretz
mvn spring-boot:run

You can check below link for more details:

https://www.ricston.com/blog/encrypting-properties-in-spring-boot-with-jasypt-spring-boot/

To use your encrypted properties in your app just use it as usual, use either method you like (Spring Boot wires the magic, anyway the property must be of course in the classpath):

Using @Value annotation

@Value("${db.password}")
private String password;

Or using Environment

@Autowired
private Environment environment;

public void doSomething(Environment env) {
    System.out.println(env.getProperty("db.password"));
}

Update: for production environment, to avoid exposing the password in the command line, since you can query the processes with ps, previous commands with history, etc etc. You could:

• Create a script like this: touch setEnv.sh
• Edit setEnv.sh to export the JASYPT_ENCRYPTOR_PASSWORD variable

  #!/bin/bash

  export JASYPT_ENCRYPTOR_PASSWORD=supersecretz

• Execute the file with . setEnv.sh
• Run the app in background with mvn spring-boot:run &
• Delete the file setEnv.sh
• Unset the previous environment variable with: unset JASYPT_ENCRYPTOR_PASSWORD

While you are working with Laravel you must be in root of laravel directory structure. There are App, route, public etc folders is root directory. Just follow below step to fix issue. check composer status using : composer -v

First, download the Laravel installer using Composer:

composer global require "laravel/installer"

Please check with below command:

php artisan serve

still not work then create new project with existing code. using LINK

Try this:

window.open(url, '_blank');

This will open in new tab (if your code is synchronous and in this case it is. in other case it would open a window)

The accepted answer works well except for the fact that the javascript is briefly displayed in whatever the ajax target element is. To get around this, create a partial view called _Redirect with the following code:

@model string
<script>
   window.location = '@Model';
</script>

Then, in the controller replace

return Redirect(Url.Action("Index", "Home"));

with

return PartialView("_Redirect",Url.Action("Index", "Home"));

The effect is the same as the accepted answer, but without the brief artifact in the display. Place the _Redirect.cshtml in the shared folder so it can be used from anywhere.

In Access 2007 - 2010, go to Database Tools and click Compact and Repair Database, and it will automatically reset the ID.

Could be because of restoring SQL Server 2012 version backup file into SQL Server 2008 R2 or even less.

if you define a/A as 0

char res;
if (i>25 || i<0){
    res = null;
}
    res = (i) + 65
}
return res;

65 for captitals; 97 for non captitals

I know it's a little late response, but I got the same problem a couple of days before and I have came with a nice & smooth solution. First I found this great date picker here

Then I've just updated the CSS class (jquery.calendarPicker.css) that comes with the example like this:

.calMonth {
  /*border-bottom: 1px dashed #666;
  padding-bottom: 5px;
  margin-bottom: 5px;*/
}

.calDay 
{
    display:none;
}

The plugin fires an event DateChanged when you change anything, so it doesn't matter that you are not clicking on a day (and it fits nice as a year and month picker)

Hope it helps!

Use mvn -X or mvn --debug to find out from which different locations Maven reads settings.xml. This switch activates debug logging. Just check the first lines of mvn --debug | findstr /i /c:using /c:reading.

Right, Maven uses the Java system property user.home as location for the .m2 folder.

But user.home does not always resolve to %USERPROFILE%\.m2. If you have moved the location of your Desktop folder to another place, user.home might resolve to the parent directory of this new Desktop folder. This happens when using Windows Vista or a more recent Windows together with Java 7 or any older Java version.

The blog post Java’s “user.home” is Wrong on Windows describes it very well and gives links to the official bug reports. The bug is marked as resolved in Java 8. The comment of the blog's visitor Lars proposes a nice workaround.

Here is a usable class based on what Constantin said:

class Program
{
    static void Main(string[] args)
    {
        FastConcat<int> i = new FastConcat<int>();
        i.Add(new int[] { 0, 1, 2, 3, 4 });
        Console.WriteLine(i[0]);
        i.Add(new int[] { 5, 6, 7, 8, 9 });
        Console.WriteLine(i[4]);

        Console.WriteLine("Enumerator:");
        foreach (int val in i)
            Console.WriteLine(val);

        Console.ReadLine();
    }
}

class FastConcat<T> : IEnumerable<T>
{
    LinkedList<T[]> _items = new LinkedList<T[]>();
    int _count;

    public int Count
    {
        get
        {
            return _count;
        }
    }

    public void Add(T[] items)
    {
        if (items == null)
            return;
        if (items.Length == 0)
            return;

        _items.AddLast(items);
        _count += items.Length;
    }

    private T[] GetItemIndex(int realIndex, out int offset)
    {
        offset = 0; // Offset that needs to be applied to realIndex.
        int currentStart = 0; // Current index start.

        foreach (T[] items in _items)
        {
            currentStart += items.Length;
            if (currentStart > realIndex)
                return items;
            offset = currentStart;
        }
        return null;
    }

    public T this[int index]
    {
        get
        {
            int offset;
            T[] i = GetItemIndex(index, out offset);
            return i[index - offset];
        }
        set
        {
            int offset;
            T[] i = GetItemIndex(index, out offset);
            i[index - offset] = value;
        }
    }

    #region IEnumerable<T> Members

    public IEnumerator<T> GetEnumerator()
    {
        foreach (T[] items in _items)
            foreach (T item in items)
                yield return item;
    }

    #endregion

    #region IEnumerable Members

    System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator()
    {
        return GetEnumerator();
    }

    #endregion
}

You could insert input fields without "name" attribute:

<input type="text" id="in-between" />

Or you could simply remove them once the form is submitted (in jQuery):

$("form").submit(function() {
   $(this).children('#in-between').remove();
});

A POJO is just a plain, old Java Bean with the restrictions removed. Java Beans must meet the following requirements:

1. Default no-arg constructor
2. Follow the Bean convention of getFoo (or isFoo for booleans) and setFoo methods for a mutable attribute named foo; leave off the setFoo if foo is immutable.
3. Must implement java.io.Serializable

POJO does not mandate any of these. It's just what the name says: an object that compiles under JDK can be considered a Plain Old Java Object. No app server, no base classes, no interfaces required to use.

The acronym POJO was a reaction against EJB 2.0, which required several interfaces, extended base classes, and lots of methods just to do simple things. Some people, Rod Johnson and Martin Fowler among them, rebelled against the complexity and sought a way to implement enterprise scale solutions without having to write EJBs.

Martin Fowler coined a new acronym.

Rod Johnson wrote "J2EE Without EJBs", wrote Spring, influenced EJB enough so version 3.1 looks a great deal like Spring and Hibernate, and got a sweet IPO from VMWare out of it.

Here's an example that you can wrap your head around:

public class MyFirstPojo
{
    private String name;

    public static void main(String [] args)
    {
       for (String arg : args)
       {
          MyFirstPojo pojo = new MyFirstPojo(arg);  // Here's how you create a POJO
          System.out.println(pojo); 
       }
    }

    public MyFirstPojo(String name)
    {    
        this.name = name;
    }

    public String getName() { return this.name; } 

    public String toString() { return this.name; } 
}

For only acept files with extension doc and docx in the explorer window try this

    <input type="file" id="docpicker"
  accept=".doc,.docx,application/msword,application/vnd.openxmlformats-officedocument.wordprocessingml.document">

Unix uses 0xA for a newline character. Windows uses a combination of two characters: 0xD 0xA. 0xD is the carriage return character. ^M happens to be the way vim displays 0xD (0x0D = 13, M is the 13th letter in the English alphabet).

You can remove all the ^M characters by running the following:

:%s/^M//g

Where ^M is entered by holding down Ctrl and typing v followed by m, and then releasing Ctrl. This is sometimes abbreviated as ^V^M, but note that you must enter it as described in the previous sentence, rather than typing it out literally.

This expression will replace all occurrences of ^M with the empty string (i.e. nothing). I use this to get rid of ^M in files copied from Windows to Unix (Solaris, Linux, OSX).

As many said, there is no way to automatically convert without adding overheads and too much complexity, but you can reduce your typing a bit and make it look better by using lambdas if some cast will be used a bit much in a scenario. That would add a bit of function overhead call, but will make code more readable compared to long static_cast strings as can be seen below. This may not be useful project wide, but only class wide.

#include <bitset>
#include <vector>

enum class Flags { ......, Total };
std::bitset<static_cast<unsigned int>(Total)> MaskVar;
std::vector<Flags> NewFlags;

-----------
auto scui = [](Flags a){return static_cast<unsigned int>(a); };

for (auto const& it : NewFlags)
{
    switch (it)
    {
    case Flags::Horizontal:
        MaskVar.set(scui(Flags::Horizontal));
        MaskVar.reset(scui(Flags::Vertical)); break;
    case Flags::Vertical:
        MaskVar.set(scui(Flags::Vertical));
        MaskVar.reset(scui(Flags::Horizontal)); break;

   case Flags::LongText:
        MaskVar.set(scui(Flags::LongText));
        MaskVar.reset(scui(Flags::ShorTText)); break;
    case Flags::ShorTText:
        MaskVar.set(scui(Flags::ShorTText));
        MaskVar.reset(scui(Flags::LongText)); break;

    case Flags::ShowHeading:
        MaskVar.set(scui(Flags::ShowHeading));
        MaskVar.reset(scui(Flags::NoShowHeading)); break;
    case Flags::NoShowHeading:
        MaskVar.set(scui(Flags::NoShowHeading));
        MaskVar.reset(scui(Flags::ShowHeading)); break;

    default:
        break;
    }
}

The right way is:

db.users.find({awards: {$elemMatch: {award:'National Medal', year:1975}}})

$elemMatch allows you to match more than one component within the same array element.

Without $elemMatch mongo will look for users with National Medal in some year and some award in 1975s, but not for users with National Medal in 1975.

See MongoDB $elemMatch Documentation for more info. See Read Operations Documentation for more information about querying documents with arrays.

If this helps you,

<input type="checkbox"  (ngModelChange)="mychange($event)" [ngModel]="mymodel">

mychange(val)
{
   console.log(val); // updated value
}

ArrayBlockingQueue has lower memory footprint, it can reuse element node, not like LinkedBlockingQueue that have to create a LinkedBlockingQueue$Node object for each new insertion.

You should use some background image to your radio buttons and flip it with another image on change

.radio {
    background: url(customButton.png) no-repeat;
}

The simplest solution I've found to copy the contents of a folder without copying the folder itself is to use the following:

- name: Move directory contents
  command: cp -r /<source_path>/. /<dest_path>/

This resolves @surfer190's follow-up question:

Hmmm what if you want to copy the entire contents? I noticed that * doesn't work – surfer190 Jul 23 '16 at 7:29

* is a shell glob, in that it relies on your shell to enumerate all the files within the folder before running cp, while the . directly instructs cp to get the directory contents (see https://askubuntu.com/questions/86822/how-can-i-copy-the-contents-of-a-folder-to-another-folder-in-a-different-directo)

Why myList[1] is considered a 'str' object?

Because it is a string. What else is 'from form', if not a string? (Actually, strings are sequences too, i.e. they can be indexed, sliced, iterated, etc. as well - but that's part of the str class and doesn't make it a list or something).

mList[1] returns the first item in the list 'from form'

If you mean that myList is 'from form', no it's not!!! The second (indexing starts at 0) element is 'from form'. That's a BIG difference. It's the difference between a house and a person.

Also, myList doesn't have to be a list from your short code sample - it could be anything that accepts 1 as index - a dict with 1 as index, a list, a tuple, most other sequences, etc. But that's irrelevant.

but I cannot append to item 1 in the list myList

Of course not, because it's a string and you can't append to string. String are immutable. You can concatenate (as in, "there's a new object that consists of these two") strings. But you cannot append (as in, "this specific object now has this at the end") to them.

grep -l "classname" *.jar

gives you the name of the jar

find . -name "*.jar" -exec jar -t -f {} \; | grep  "classname"

gives you the package of the class

In order to access the data from a ReadableStream you need to call one of the conversion methods (docs available here).

As an example:

fetch('https://jsonplaceholder.typicode.com/posts/1')
  .then(function(response) {
    // The response is a Response instance.
    // You parse the data into a useable format using `.json()`
    return response.json();
  }).then(function(data) {
    // `data` is the parsed version of the JSON returned from the above endpoint.
    console.log(data);  // { "userId": 1, "id": 1, "title": "...", "body": "..." }
  });

EDIT: If your data return type is not JSON or you don't want JSON then use text()

As an example:

fetch('https://jsonplaceholder.typicode.com/posts/1')
  .then(function(response) {
    return response.text();
  }).then(function(data) {
    console.log(data); // this will be a string
  });

Hope this helps clear things up.

To convert a string with comma separated values to a string array use Split:

string strOne = "One,Two,Three,Four";
string[] strArrayOne = new string[] {""};
//somewhere in your code
strArrayOne = strOne.Split(',');

Result will be a string array with four strings:

{"One","Two","Three","Four"}

You can do it programatically:

import android.app.Activity;
import android.os.Bundle;
import android.view.Window;
import android.view.WindowManager;

public class ActivityName extends Activity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        // remove title
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
            WindowManager.LayoutParams.FLAG_FULLSCREEN);
        setContentView(R.layout.main);
    }
}

Or you can do it via your AndroidManifest.xml file:

<activity android:name=".ActivityName"
    android:label="@string/app_name"
    android:theme="@android:style/Theme.Black.NoTitleBar.Fullscreen">
</activity>

Edit: I added some lines so that you can show it in fullscreen, as it seems that's what you want.

No need to use date_default_timezone_set for the whole script, just specify the timezone you want with a DateTime object:

$now = new DateTime(null, new DateTimeZone('America/New_York'));
$now->setTimezone(new DateTimeZone('Europe/London'));    // Another way
echo $now->format("Y-m-d\TH:i:sO"); // something like "2015-02-11T06:16:47+0100" (ISO 8601)

Here you have few solutions ;)

http://www.bennadel.com/blog/122-Getting-Only-the-Date-Part-of-a-Date-Time-Stamp-in-SQL-Server.htm

Tips of using OS-dependent function to terminate C++ thread:

1. std::thread::native_handle() only can get the thread’s valid native handle type before calling join() or detach(). After that, native_handle() returns 0 - pthread_cancel() will coredump.

2. To effectively call native thread termination function(e.g. pthread_cancel()), you need to save the native handle before calling std::thread::join() or std::thread::detach(). So that your native terminator always has a valid native handle to use.

More explanations please refer to: http://bo-yang.github.io/2017/11/19/cpp-kill-detached-thread .

For my situation, I switched the value of "fork" to false, such as <fork>false</fork>. I do not understand why, hope someone could explain to me. Thanks in advance.

Following up on these solutions, here is some helpful code illustrating :

#
# Copying columns in pandas without slice warning
#
import numpy as np
df = pd.DataFrame(np.random.randn(10, 3), columns=list('ABC'))

#
# copies column B into new column D
df.loc[:,'D'] = df['B']
print df

#
# creates new column 'E' with values -99
# 
# But copy command replaces those where 'B'>0 while others become NaN (not copied)
df['E'] = -99
print df
df['E'] = df[df['B']>0]['B'].copy()
print df

#
# creates new column 'F' with values -99
# 
# Copy command only overwrites values which meet criteria 'B'>0
df['F']=-99
df.loc[df['B']>0,'F'] = df[df['B']>0]['B'].copy()
print df

You can use the following

<select data-hai="whatup">
      <option label="Select your city">Select your city</option>
      <option value="sydney">Sydney</option>
      <option value="melbourne">Melbourne</option>
      <option value="cromwell">Cromwell</option>
      <option value="queenstown">Queenstown</option>
</select>

(And if you have no admin access to the server)

ALTER ROLE <your_login_role> SET search_path TO a,b,c;

Two important things to know about:

1. When a schema name is not simple, it needs to be wrapped in double quotes.
2. The order in which you set default schemas a, b, c matters, as it is also the order in which the schemas will be looked up for tables. So if you have the same table name in more than one schema among the defaults, there will be no ambiguity, the server will always use the table from the first schema you specified for your search_path.

Shortest (correct) version:

grep -q "something" file; [ $? -eq 0 ] && echo "yes" || echo "no"

can be also written as

grep -q "something" file; test $? -eq 0 && echo "yes" || echo "no"

but you dont need to explicitly test it in this case, so the same with:

grep -q "something" file && echo "yes" || echo "no"

Following on from jpw it might be good to encapsulate his solution in a small subroutine to save on having lots of lines of code:

Private Sub CommandButton1_Click()
Dim i As Integer
Dim a As Integer
a = 15
For i = 11 To 32
  If Worksheets(1).Cells(i, 3) <> "" Then
    call copValuesAndFormat(i,3,a,15)        
    call copValuesAndFormat(i,5,a,17) 
    call copValuesAndFormat(i,6,a,18) 
    call copValuesAndFormat(i,7,a,19) 
    call copValuesAndFormat(i,8,a,20) 
    call copValuesAndFormat(i,9,a,21) 
    a = a + 1
  End If
Next i
end sub

sub copValuesAndFormat(x1 as integer, y1 as integer, x2 as integer, y2 as integer)
  Worksheets(1).Cells(x1, y1).Copy
  Worksheets(2).Cells(x2, y2).PasteSpecial Paste:=xlPasteFormats
  Worksheets(2).Cells(x2, y2).PasteSpecial Paste:=xlPasteValues
end sub

(I do not have Excel in current location so please excuse bugs as not tested)

you should man date first

date +%Y-%m-%d
date +%Y-%m-%d -d yesterday

Or alternatively, you could use this:

WHERE CHARINDEX(N'Apples', someColumn) = 0

Not sure which one performs better - you gotta test it! :-)

Marc

UPDATE: the performance seems to be pretty much on a par with the other solution (WHERE someColumn NOT LIKE '%Apples%') - so it's really just a question of your personal preference.

Strictly stated you must check all of the following: defined, not empty AND not None.

For "normal" variables it makes a difference if defined and set or not set. See foo and bar in the example below. Both are defined but only foo is set.

On the other side registered variables are set to the result of the running command and vary from module to module. They are mostly json structures. You probably must check the subelement you're interested in. See xyz and xyz.msg in the example below:

cat > test.yml <<EOF
- hosts: 127.0.0.1

  vars:
    foo: ""          # foo is defined and foo == '' and foo != None
    bar:             # bar is defined and bar != '' and bar == None

  tasks:

  - debug:
      msg : ""
    register: xyz    # xyz is defined and xyz != '' and xyz != None
                     # xyz.msg is defined and xyz.msg == '' and xyz.msg != None

  - debug:
      msg: "foo is defined and foo == '' and foo != None"
    when: foo is defined and foo == '' and foo != None

  - debug:
      msg: "bar is defined and bar != '' and bar == None"
    when: bar is defined and bar != '' and bar == None

  - debug:
      msg: "xyz is defined and xyz != '' and xyz != None"
    when: xyz is defined and xyz != '' and xyz != None
  - debug:
      msg: "{{ xyz }}"

  - debug:
      msg: "xyz.msg is defined and xyz.msg == '' and xyz.msg != None"
    when: xyz.msg is defined and xyz.msg == '' and xyz.msg != None
  - debug:
      msg: "{{ xyz.msg }}"
EOF
ansible-playbook -v test.yml

In my case there was no DEFINER or root@localhost mentioned in my SQL file. Actually I was trying to import and run SQL file into SQLYog from Database->Import->Execute SQL Script menu. That was giving error.

Then I copied all the script from SQL file and ran in SQLYog query editor. That worked perfectly fine.

If you save the state of the application in a bundle (typically non-persistent, dynamic data in onSaveInstanceState), it can be passed back to onCreate if the activity needs to be recreated (e.g., orientation change) so that you don't lose this prior information. If no data was supplied, savedInstanceState is null.

... you should use the onPause() method to write any persistent data (such as user edits) to storage. In addition, the method onSaveInstanceState(Bundle) is called before placing the activity in such a background state, allowing you to save away any dynamic instance state in your activity into the given Bundle, to be later received in onCreate(Bundle) if the activity needs to be re-created. See the Process Lifecycle section for more information on how the lifecycle of a process is tied to the activities it is hosting. Note that it is important to save persistent data in onPause() instead of onSaveInstanceState(Bundle) because the latter is not part of the lifecycle callbacks, so will not be called in every situation as described in its documentation.

source

Declaration

Declarations tell the compiler that a program element or name exists. A declaration introduces one or more names into a program. Declarations can occur more than once in a program. Therefore, classes, structures, enumerated types, and other user-defined types can be declared for each compilation unit.

Definition

Definitions specify what code or data the name describes. A name must be declared before it can be used.

I want to correct little bit the above code

    public class MainActivity extends ActionBarActivity {
        @Override
        protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Toolbar mToolbar = (Toolbar) findViewById(R.id.toolbar);
        DrawerLayout mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
        ActionBarDrawerToggle mDrawerToggle = new ActionBarDrawerToggle(
            this,  mDrawerLayout, mToolbar,
            R.string.navigation_drawer_open, R.string.navigation_drawer_close
        );
        mDrawerLayout.setDrawerListener(mDrawerToggle);

        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
        getSupportActionBar().setHomeButtonEnabled(true);
    }

and all the other things will remain same...

For those who are having problem Drawerlayout overlaying toolbar

add android:layout_marginTop="?attr/actionBarSize" to root layout of drawer content

Divide $percentage by 100 and multiply to $totalWidth. Simple maths.

I had Xamarin installed and tried to use Unity. Basically in any case you have to kill any application that might be talking to your device through ADB

std::string doesn't contain such function but you could use stand-alone replace function from algorithm header.

#include <algorithm>
#include <string>

void some_func() {
  std::string s = "example string";
  std::replace( s.begin(), s.end(), 'x', 'y'); // replace all 'x' to 'y'
}

Courtesy of this page, I found this worked when the suggestions above didn't:

import PIL.Image
from cStringIO import StringIO
import IPython.display
import numpy as np
def showarray(a, fmt='png'):
    a = np.uint8(a)
    f = StringIO()
    PIL.Image.fromarray(a).save(f, fmt)
    IPython.display.display(IPython.display.Image(data=f.getvalue()))

Bumped into same warning. If you specified goals and built project using "Run as -> Maven build..." option check and remove pom.xml from Profiles: just below Goals:

You are better off just generating a random long value, then all the bits are random. In Java 6, new Random() uses the System.nanoTime() plus a counter as a seed.

There are different levels of uniqueness.

If you need uniqueness across many machines, you could have a central database table for allocating unique ids, or even batches of unique ids.

If you just need to have uniqueness in one app you can just have a counter (or a counter which starts from the currentTimeMillis()*1000 or nanoTime() depending on your requirements)

Fullname with only one whitespace:

^[a-zA-Z'\-\pL]+(?:(?! {2})[a-zA-Z'\-\pL ])*[a-zA-Z'\-\pL]+$

Nested classes are very useful for implementing internal details that should not be exposed. If you use Reflector to check classes like Dictionary<Tkey,TValue> or Hashtable you'll find some examples.

Tremendous thanks to ArturZ for pointing me in the right direction on this. I don't have tmpwatch installed on my system so that isn't the cause of the problem in my case. But the end result is the same: The private /tmp that systemd creates is getting removed. Here's what happens:

1. systemd creates a new process via clone() with the CLONE_NEWNS flag to obtain a private namespace. Or maybe it calls unshare() with CLONE_NEWNS. Same thing.

2. systemd creates a subdirectory in /tmp (e.g. /tmp/systemd-namespace-XRiWad/private) and mounts it on /tmp. Because CLONE_NEWNS was set in #1, this mountpoint is invisible to all other processes.

3. systemd then invokes mysqld in this private namespace.

4. Some specific database operations (e.g. "describe ;") create & remove temporary files, which has the side effect of updating the timestamp on /tmp/systemd-namespace-XRiWad/private. Other database operations execute without using /tmp at all.

5. Eventually 10 days go by where even though the database itself remains active, no operations occur that update the timestamp on /tmp/systemd-namespace-XRiWad/private.

6. /bin/systemd-tmpfiles comes along and removes the "old" /tmp/systemd-namespace-XRiWad/private directory, effectively rendering the private /tmp unusable for mysqld while the public /tmp remains available for everything else on the system.

Restarting mysqld works because this starts everything over again at step #1, with a brand new private /tmp directory. However, the problem eventually comes back again. And again.

The simple solution is to configure /bin/systemd-tmpfiles so that it preserves anything in /tmp with the name /tmp/systemd-namespace-*. I did this by creating /etc/tmpfiles.d/privatetmp.conf with the following contents:

x   /tmp/systemd-namespace-*
x   /tmp/systemd-namespace-*/private

Problem solved.

Yes, you can set this on the inventory/host level.

^{With an already accepted answer present, I think this is a better answer to the question on how to handle this on the inventory level. I consider this more secure by isolating this insecure setting to the hosts required for this (e.g. test systems, local development machines).}

What you can do at the inventory level is add

ansible_ssh_common_args='-o StrictHostKeyChecking=no'

or

ansible_ssh_extra_args='-o StrictHostKeyChecking=no'

to your host definition (see Ansible Behavioral Inventory Parameters).

This will work provided you use the ssh connection type, not paramiko or something else).

For example, a Vagrant host definition would look like…

vagrant ansible_port=2222 ansible_host=127.0.0.1 ansible_ssh_common_args='-o StrictHostKeyChecking=no'

or

vagrant ansible_port=2222 ansible_host=127.0.0.1 ansible_ssh_extra_args='-o StrictHostKeyChecking=no'

Running Ansible will then be successful without changing any environment variable.

$ ansible vagrant -i <path/to/hosts/file> -m ping
vagrant | SUCCESS => {
    "changed": false, 
    "ping": "pong"
}

In case you want to do this for a group of hosts, here's a suggestion to make it a supplemental group var for an existing group like this:

[mytestsystems]
test[01:99].example.tld

[insecuressh:children]
mytestsystems

[insecuressh:vars]
ansible_ssh_common_args='-o StrictHostKeyChecking=no'

I had this same problem in asp.net mvc, I fixed it by putting this method in my base api controller that all my api controllers inherit from:

    /// <summary>
    /// Get the session from HttpContext.Current, if that is null try to get it from the Request properties.
    /// </summary>
    /// <returns></returns>
    protected HttpContextWrapper GetHttpContextWrapper()
    {
      HttpContextWrapper httpContextWrapper = null;
      if (HttpContext.Current != null)
      {
        httpContextWrapper = new HttpContextWrapper(HttpContext.Current);
      }
      else if (Request.Properties.ContainsKey("MS_HttpContext"))
      {
        httpContextWrapper = (HttpContextWrapper)Request.Properties["MS_HttpContext"];
      }
      return httpContextWrapper;
    }

Then in your api call that you want to access the session you just do:

HttpContextWrapper httpContextWrapper = GetHttpContextWrapper();
var someVariableFromSession = httpContextWrapper.Session["SomeSessionValue"];

I also have this in my Global.asax.cs file like other people have posted, not sure if you still need it using the method above, but here it is just in case:

/// <summary>
/// The following method makes Session available.
/// </summary>
protected void Application_PostAuthorizeRequest()
{
  if (HttpContext.Current.Request.AppRelativeCurrentExecutionFilePath.StartsWith("~/api"))
  {
    HttpContext.Current.SetSessionStateBehavior(SessionStateBehavior.Required);
  }
}

You could also just make a custom filter attribute that you can stick on your api calls that you need session, then you can use session in your api call like you normally would via HttpContext.Current.Session["SomeValue"]:

  /// <summary>
  /// Filter that gets session context from request if HttpContext.Current is null.
  /// </summary>
  public class RequireSessionAttribute : ActionFilterAttribute
  {
    /// <summary>
    /// Runs before action
    /// </summary>
    /// <param name="actionContext"></param>
    public override void OnActionExecuting(HttpActionContext actionContext)
    {
      if (HttpContext.Current == null)
      {
        if (actionContext.Request.Properties.ContainsKey("MS_HttpContext"))
        {
          HttpContext.Current = ((HttpContextWrapper)actionContext.Request.Properties["MS_HttpContext"]).ApplicationInstance.Context;
        }
      }
    }
  }

Hope this helps.

DateTime now = DateTime.Now;
int prevMonth = now.AddMonths(-1).Month;
int year = now.AddMonths(-1).Year;
int daysInPrevMonth = DateTime.DaysInMonth(year, prevMonth);
DateTime firstDayPrevMonth = new DateTime(year, prevMonth, 1);
DateTime lastDayPrevMonth = new DateTime(year, prevMonth, daysInPrevMonth);
Console.WriteLine("{0} {1}", firstDayPrevMonth.ToShortDateString(),
  lastDayPrevMonth.ToShortDateString());

I have python 2.7.3 and this solved my problem:

pip install pysqlite

I believe you need quotes around the model:

JSON.stringify({ "model": source })

Since java-9 there is a standard way of checking if an index belongs to the array - Objects#checkIndex() :

List<Integer> ints = List.of(1,2,3);
System.out.println(Objects.checkIndex(1,ints.size())); // 1
System.out.println(Objects.checkIndex(10,ints.size())); //IndexOutOfBoundsException

To open in a new windows with dimensions and everything, you will need to call a JavaScript function, as target="_blank" won't let you adjust sizes. An example would be:

<a href="http://www.facebook.com/sharer" onclick="window.open(this.href, 'mywin',
'left=20,top=20,width=500,height=500,toolbar=1,resizable=0'); return false;" >Share this</a>

Hope this helps you.

Try fixing the capitalization. onclick instead of onClick

Reference: Mozilla Developer Docs

SerialPort (RS-232 Serial COM Port) in C# .NET
This article explains how to use the SerialPort class in .NET to read and write data, determine what serial ports are available on your machine, and how to send files. It even covers the pin assignments on the port itself.

Example Code:

using System;
using System.IO.Ports;
using System.Windows.Forms;

namespace SerialPortExample
{
  class SerialPortProgram
  {
    // Create the serial port with basic settings
    private SerialPort port = new SerialPort("COM1",
      9600, Parity.None, 8, StopBits.One);

    [STAThread]
    static void Main(string[] args)
    { 
      // Instatiate this class
      new SerialPortProgram();
    }

    private SerialPortProgram()
    {
      Console.WriteLine("Incoming Data:");

      // Attach a method to be called when there
      // is data waiting in the port's buffer
      port.DataReceived += new 
        SerialDataReceivedEventHandler(port_DataReceived);

      // Begin communications
      port.Open();

      // Enter an application loop to keep this thread alive
      Application.Run();
    }

    private void port_DataReceived(object sender,
      SerialDataReceivedEventArgs e)
    {
      // Show all the incoming data in the port's buffer
      Console.WriteLine(port.ReadExisting());
    }
  }
}

On Amazon Linux 2 and PHP 7.4 I finally got PHP-ZIP to install and I hope it helps someone else - by the following (note the yum install command has extra common modules also included you may not need them all):

sudo yum -y install https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm

sudo yum -y install https://rpms.remirepo.net/enterprise/remi-release-7.rpm

sudo yum -y install yum-utils

sudo yum-config-manager --enable remi-php74

sudo yum update

sudo yum install php php-cli php-fpm php-mysqlnd php-zip php-devel php-gd php-mcrypt php-mbstring php-curl php-xml php-pear php-bcmath php-json

sudo pecl install zip

php --modules

sudo systemctl restart httpd

//As an HTTP redirect (back button will not work )
window.location.replace("http://www.google.com");

//like if you click on a link (it will be saved in the session history, 
//so the back button will work as expected)
window.location.href = "http://www.google.com";

It's the difference between strings and integers. See:

>>> "1" * 9
'111111111'

>>> 1 * 9
9

You can assign, but not declare, inside an if:

Try this:

int v; // separate declaration
if((v = someMethod()) != 0) return true;

If you are looking for retrieving remote user IDSID/Username, use:

echo gethostbyaddr($_SERVER['REMOTE_ADDR']);

You will get something like iamuser1-mys.corp.company.com

Filter the rest of the domain behind, and you are able to get the idsid only.

For more information visit http://lostwithin.net/how-to-get-users-ip-and-computer-name-using-php/

The problem with your solution is that it does not work well when tied down to other directives that creates a new scope, e.g. ng-repeat. A better solution would be to simply create a service function that enables you to focus elements imperatively within your controllers or to focus elements declaratively in the html.

DEMO

JAVASCRIPT

Service

 .factory('focus', function($timeout, $window) {
    return function(id) {
      // timeout makes sure that it is invoked after any other event has been triggered.
      // e.g. click events that need to run before the focus or
      // inputs elements that are in a disabled state but are enabled when those events
      // are triggered.
      $timeout(function() {
        var element = $window.document.getElementById(id);
        if(element)
          element.focus();
      });
    };
  });

Directive

  .directive('eventFocus', function(focus) {
    return function(scope, elem, attr) {
      elem.on(attr.eventFocus, function() {
        focus(attr.eventFocusId);
      });

      // Removes bound events in the element itself
      // when the scope is destroyed
      scope.$on('$destroy', function() {
        elem.off(attr.eventFocus);
      });
    };
  });

Controller

.controller('Ctrl', function($scope, focus) {
    $scope.doSomething = function() {
      // do something awesome
      focus('email');
    };
  });

HTML

<input type="email" id="email" class="form-control">
<button event-focus="click" event-focus-id="email">Declarative Focus</button>
<button ng-click="doSomething()">Imperative Focus</button>

How about creating a timer with the next date?

In your timer callback you create the timer for the following year? DateTime has always a year value. What you want to express is a recurring time specification. This is another type which you would need to create. DateTime is always represents a specific date and time but not a recurring date.

In the context of the repository pattern, aggregate roots are the only objects your client code loads from the repository.

The repository encapsulates access to child objects - from a caller's perspective it automatically loads them, either at the same time the root is loaded or when they're actually needed (as with lazy loading).

For example, you might have an Order object which encapsulates operations on multiple LineItem objects. Your client code would never load the LineItem objects directly, just the Order that contains them, which would be the aggregate root for that part of your domain.

When i installed my app on emulator, it showed my the .apk file in

data/app Then I used ls data/app //to see if it exists or not

After you install your app just use ls command vie shell and check desired directory but it depends what kind of application you are trying to install. I used this method to Install Point if any thing is wrong.

The best option is 0 and 1 (as numbers - another answer suggests 0 and 1 as CHAR for space-efficiency but that's a bit too twisted for me), using NOT NULL and a check constraint to limit contents to those values. (If you need the column to be nullable, then it's not a boolean you're dealing with but an enumeration with three values...)

Advantages of 0/1:

• Language independent. 'Y' and 'N' would be fine if everyone used it. But they don't. In France they use 'O' and 'N' (I have seen this with my own eyes). I haven't programmed in Finland to see whether they use 'E' and 'K' there - no doubt they're smarter than that, but you can't be sure.
• Congruent with practice in widely-used programming languages (C, C++, Perl, Javascript)
• Plays better with the application layer e.g. Hibernate
• Leads to more succinct SQL, for example, to find out how many bananas are ready to eat select sum(is_ripe) from bananas instead of select count(*) from bananas where is_ripe = 'Y' or even (yuk) select sum(case is_ripe when 'Y' then 1 else 0) from bananas

Advantages of 'Y'/'N':

• Takes up less space than 0/1
• It's what Oracle suggests, so might be what some people are more used to

Another poster suggested 'Y'/null for performance gains. If you've proven that you need the performance, then fair enough, but otherwise avoid since it makes querying less natural (some_column is null instead of some_column = 0) and in a left join you'll conflate falseness with nonexistent records.

IMO the initial commit message line is supposed to be to short, to the point instead of paragraph. So using git commit -m "<short_message>" will suffice

After that in order to expand upon the initial commit message we can use

git commit --amend

which will open the vim and then we can enter the explanation for the commit message which in my opinion easier than command line.

I wrote a shellscript that solves this problem for multiple websites: https://github.com/eduardschaeli/wget-image-scraper

(Scrapes images from a list of urls with wget)

I had the same error problem using Code Blocks rev 13.12. I may be wrong here since I am less than a beginner :)

My problem was that I accidentally capitalized "M" in Main() instead of ALL lowercase = main() - once corrected, it worked!!!

I noticed that you have "int main()" instead of "main()". Is this the problem, or is it supposed to be that way?

Hope I could help...

Just because int.TryParse gives you the value doesn't mean you need to keep it; you can quite happily do this:

int temp;
if (int.TryParse(inputString, out temp))
{
    // do stuff
}

You can ignore temp entirely if you don't need it. If you do need it, then hey, it's waiting for you when you want it.

As for the internals, as far as I remember it attempts to read the raw bytes of the string as an int and tests whether the result is valid, or something; it's not as simple as iterating through looking for non-numeric characters.

I have use mkcert to create infinites *.dev.net subdomains & localhost with valid HTTPS/SSL certs (Windows 10 XAMPP & Linux Debian 10 Apache2)

I create the certs on Windows with mkcert v1.4.0 (execute CMD as Administrator):

mkcert -install
mkcert localhost "*.dev.net"

This create in Windows 10 this files (I will install it first in Windows 10 XAMPP)

localhost+1.pem
localhost+1-key.pem

Overwrite the XAMPP default certs:

copy "localhost+1.pem" C:\xampp\apache\conf\ssl.crt\server.crt
copy "localhost+1-key.pem"  C:\xampp\apache\conf\ssl.key\server.key

Now, in Apache2 for Debian 10, activate SSL & vhost_alias

a2enmod vhosts_alias
a2enmod ssl
a2ensite default-ssl
systemctl restart apache2

For vhost_alias add this Apache2 config:

nano /etc/apache2/sites-available/999-vhosts_alias.conf

With this content:

<VirtualHost *:80>
   UseCanonicalName Off
   ServerAlias *.dev.net
   VirtualDocumentRoot "/var/www/html/%0/"
</VirtualHost>

Add the site:

a2ensite 999-vhosts_alias

Copy the certs to /root/mkcert by SSH and let overwrite the Debian ones:

systemctl stop apache2

mv /etc/ssl/certs/ssl-cert-snakeoil.pem /etc/ssl/certs/ssl-cert-snakeoil.pem.bak
mv /etc/ssl/private/ssl-cert-snakeoil.key /etc/ssl/private/ssl-cert-snakeoil.key.bak

cp "localhost+1.pem" /etc/ssl/certs/ssl-cert-snakeoil.pem
cp "localhost+1-key.pem" /etc/ssl/private/ssl-cert-snakeoil.key

chown root:ssl-cert /etc/ssl/private/ssl-cert-snakeoil.key
chmod 640 /etc/ssl/private/ssl-cert-snakeoil.key

systemctl start apache2

Edit the SSL config

nano /etc/apache2/sites-enabled/default-ssl.conf

At the start edit the file with this content:

<IfModule mod_ssl.c>
    <VirtualHost *:443>

            UseCanonicalName Off
            ServerAlias *.dev.net
            ServerAdmin webmaster@localhost

            # DocumentRoot /var/www/html/
            VirtualDocumentRoot /var/www/html/%0/

...

Last restart:

systemctl restart apache2

NOTE: don´t forget to create the folders for your subdomains in /var/www/html/

/var/www/html/subdomain1.dev.net
/var/www/html/subdomain2.dev.net
/var/www/html/subdomain3.dev.net

Try this:

case $VAR in
normal)
    echo "This doesn't do fallthrough"
    ;;
special)
    echo -n "This does "
    ;&
fallthrough)
    echo "fall-through"
    ;;
esac

I was reluctant to cast to float because of the potential for more digits to be in my decimal than float can represent

FORMAT when used with a standard .net format string 'g8' returned the scientific notation in cases of very small decimals (eg 1e-08) which was also unsuitable

Using a custom format string (https://docs.microsoft.com/en-us/dotnet/standard/base-types/custom-numeric-format-strings) allowed me to achieve what I wanted:

DECLARE @n DECIMAL(9,6) =1.23;
SELECT @n
--> 1.230000
SELECT FORMAT(@n, '0.######')
--> 1.23

If you want your number to have at least one trailing zero, so 2.0 does not become 2, use a format string like 0.0#####

The decimal point is localised, so cultures that use a comma as decimal separator will encounter a comma output where the . is

Of course, this is the discouragable practice of having the data layer doing formatting (but in my case there is no other layer; the user is literally running a stored procedure and putting the result in an email :/ )

I use this with good results:

border-style:hidden;

It also works for:

border-right-style:hidden; /*if you want to hide just a border on a cell*/

Example:

<style type="text/css">_x000D_
      table, th, td {_x000D_
       border: 2px solid green;_x000D_
      }_x000D_
      tr.hide_right > td, td.hide_right{_x000D_
        border-right-style:hidden;_x000D_
      }_x000D_
      tr.hide_all > td, td.hide_all{_x000D_
        border-style:hidden;_x000D_
      }_x000D_
  }_x000D_
</style>_x000D_
<table>_x000D_
  <tr>_x000D_
    <td class="hide_right">11</td>_x000D_
    <td>12</td>_x000D_
    <td class="hide_all">13</td>_x000D_
  </tr>_x000D_
  <tr class="hide_right">_x000D_
    <td>21</td>_x000D_
    <td>22</td>_x000D_
    <td>23</td>_x000D_
  </tr>_x000D_
  <tr class="hide_all">_x000D_
    <td>31</td>_x000D_
    <td>32</td>_x000D_
    <td>33</td>_x000D_
  </tr>_x000D_
</table>

Here is the result:

Just a little add-on, because it seems there was kind of a fight if to use ./node_modules/.bin/jest -i ... or just jest -i ... or npm test -- -i ...

1. Just calling jest works if you have it installed globally (as with npm install -g jest), a not-so-clean way of handling dependencies
2. If you have Jest installed only locally in the package and want to call the Jest script without the npm script detour, you can use npx jest -i ... => this is exactly what npx is for. It saves you from writing ./node_modules/.bin/....

This might help http://docs.pytest.org/en/latest/xunit_setup.html

In my test suite, I group my test cases into classes. For the setup and teardown I need for all the test cases in that class, I use the setup_class(cls) and teardown_class(cls) classmethods.

And for the setup and teardown I need for each of the test case, I use the setup_method(method) and teardown_method(methods)

Example:

lh = <got log handler from logger module>

class TestClass:
    @classmethod
    def setup_class(cls):
        lh.info("starting class: {} execution".format(cls.__name__))

    @classmethod
    def teardown_class(cls):
        lh.info("starting class: {} execution".format(cls.__name__))

    def setup_method(self, method):
        lh.info("starting execution of tc: {}".format(method.__name__))

    def teardown_method(self, method):
        lh.info("starting execution of tc: {}".format(method.__name__))

    def test_tc1(self):
        <tc_content>
        assert 

    def test_tc2(self):
        <tc_content>
        assert

Now when I run my tests, when the TestClass execution is starting, it logs the details for when it is beginning execution, when it is ending execution and same for the methods..

You can add up other setup and teardown steps you might have in the respective locations.

Hope it helps!

I wrote a tutorial about this a while ago.

The most important point is the "Site URL":

Site URL: http://localhost/app_name/

Where the folder structure is something like:

app_name
¦   index.php
¦
+---canvas
¦   ¦   index.php
¦   ¦
¦   +---css
¦           main.css
¦           reset.css
¦
+---src
        facebook.php
        fb_ca_chain_bundle.crt

EDIT:
Kavya: how does the FB server recognize my localhost even without an IP or port??

I don't think this has anything to do with Facebook, I guess since the iframe src parameter is loaded from client-side it'll treat your local URL as if you put it directly on your browser.

For example have a file on your online server with content (e.g. online.php):

<iframe src="http://localhost/test.php" width="100%" height="100%">
    <p>Not supported!</p>
</iframe>

And on your localhost root directory, have the file test.php:

<?php echo "Hello from Localhost!"; ?>

Now visit http://your_domain.com/online.php you will see your localhost file's content!

This is why realtime subscriptions and deauthorize callbacks (just to mention) won't work with localhost URLs! because Facebook will ping (send http requests) to these URLs but obviously Facebook server won't translate those URLs to yours!

• The code 302 indicates a temporary redirection.
• One of the most notable features that differentiate it from a 301 redirect is that, in the case of 302 redirects, the strength of the SEO is not transferred to a new URL.
• This is because this redirection has been designed to be used when there is a need to redirect content to a page that will not be the definitive one. Thus, once the redirection is eliminated, the original page will not have lost its positioning in the Google search engine.

EXAMPLE:- Although it is not very common that we find ourselves in need of a 302 redirect, this option can be very useful in some cases. These are the most frequent cases:

• When we realize that there is some inappropriate content on a page. While we solve the problem, we can redirect the user to another page that may be of interest.
• In the event that an attack on our website requires the restoration of any of the pages, this redirect can help us minimize the incidence.

A redirect 302 is a code that tells visitors of a specific URL that the page has been moved temporarily, directing them directly to the new location.

• In other words, redirect 302 is activated when Google robots or other search engines request to load a specific page. At that moment, thanks to this redirection, the server returns an automatic response indicating a new URL.

• In this way errors and annoyances are avoided both to search engines and users, guaranteeing smooth navigation.

For More details Refer this Article.

For generating scaffold in rails -

rails generate scaffold MODEL_GOES_HERE

For undo scaffold in rails -

rails destroy scaffold MODEL_GOES_HERE

Change in following file \bin\apache\apache2.2.22\conf\httpd.conf

Replace Listen 80 with Listen 0.0.0.0:80

Replace

<Directory />
    Options FollowSymLinks
    AllowOverride None
    Order deny,allow
    Deny from all
</Directory>

with

<Directory />
    Options FollowSymLinks
    AllowOverride None
    Order deny,allow
    Allow from all
</Directory>

Replace

onlineoffline tag - don't remove

Order Deny,Allow
Deny from all
Allow from 127.0.0.1

with

onlineoffline tag - don't remove

Order Deny,Allow
Allow from all
Allow from 127.0.0.1

in \wamp\alias\phpmyadmin.conf replace

<Directory "c:/wamp/apps/phpmyadmin3.4.10.1/">
    Options Indexes FollowSymLinks MultiViews
    AllowOverride all
        Order Deny,Allow
    Deny from all
    Allow from 127.0.0.1
</Directory>

with

<Directory "c:/wamp/apps/phpmyadmin3.4.10.1/">
    Options Indexes FollowSymLinks MultiViews
    AllowOverride all
        Order Deny,Allow
    Deny from all
    Allow from 127.0.0.1
    Allow from ::1
</Directory>

Tested on windows localhost. Note : Please consider RigsFolly's comment also.

In our network I have found that restarting the Workstation service on the client computer is able to resolve this problem. This has worked in cases where a reboot of the client would also fix the problem. But restarting the service is much quicker & easier [and may work when a reboot does not].

My impression is that the local Windows PC is caching some old information and this seems to clear it out.

For information on restarting a service, see this question. It boils down to running the following commands on a command line:

C:\> net stop workstation /y
C:\> net start workstation

Note - the /y flag will force the service to stop even if this will interrupt existing connections. But otherwise it will prompt the user and wait. So this may be necessary for scripting.

Be aware that on Windows Server 2016 (+ possibly others) these commands may also stop the netlogon service. If so you will have to add: net start netlogon

Java/Kotlin compiler converts any value greater than 9999999 (greater than or equal to 10 million) to scientific notation ie. Epsilion notation.

Ex: 12345678 is converted to 1.2345678E7

Use this code to avoid automatic conversion to scientific notation:

fun setTotalSalesValue(String total) {
        var valueWithoutEpsilon = total.toBigDecimal()
        /* Set the converted value to your android text view using setText() function */
        salesTextView.setText( valueWithoutEpsilon.toPlainString() )
    }