In a Binary search tree, all the nodes are arranged in a specific order - nodes to the left of a root node have a smaller value than its root, and all the nodes to the right of a node have values greater than the value of the root.

In addition to all the above, one should note that, for a defined value v:

• String(v) calls v.toString()
• '' + v calls v.valueOf() prior to any other type cast

So we could do something like:

var mixin = {
  valueOf:  function () { return false },
  toString: function () { return 'true' }
};
mixin === false;  // false
mixin == false;    // true
'' + mixin;       // "false"
String(mixin)     // "true"

Tested in FF 34.0 and Node 0.10

The document.createEvent documentation says that "The createEvent method is deprecated. Use event constructors instead."

So you should use this method instead:

var clickEvent = new MouseEvent("click", {
    "view": window,
    "bubbles": true,
    "cancelable": false
});

and fire it on an element like this:

element.dispatchEvent(clickEvent);

as shown here.

Using the rowid() function in data.table:

> set.seed(100)  
> df <- data.frame(cat = c(rep("aaa", 5), rep("bbb", 5), rep("ccc", 5)), val = runif(15))
> df <- df[order(df$cat, df$val), ]  
> df$num <- data.table::rowid(df$cat)
> df
   cat        val num
4  aaa 0.05638315   1
2  aaa 0.25767250   2
1  aaa 0.30776611   3
5  aaa 0.46854928   4
3  aaa 0.55232243   5
10 bbb 0.17026205   1
8  bbb 0.37032054   2
6  bbb 0.48377074   3
9  bbb 0.54655860   4
7  bbb 0.81240262   5
13 ccc 0.28035384   1
14 ccc 0.39848790   2
11 ccc 0.62499648   3
15 ccc 0.76255108   4
12 ccc 0.88216552   5

Just to add - Safari 2 and earlier definitely didn't support PUT and DELETE. I get the impression 3 did, but I don't have it around to test anymore. Safari 4 definitely does support PUT and DELETE.

Something worth taking a look at is Imran Nazar's attempt at writing a Gameboy emulator in JavaScript.

Use ifstream to read data from a file:

std::ifstream input( "filename.ext" );

If you really need to read line by line, then do this:

for( std::string line; getline( input, line ); )
{
    ...for each line in input...
}

But you probably just need to extract coordinate pairs:

int x, y;
input >> x >> y;

Update:

In your code you use ofstream myfile;, however the o in ofstream stands for output. If you want to read from the file (input) use ifstream. If you want to both read and write use fstream.

You can use LENGTH() for CHAR / VARCHAR2 and DBMS_LOB.GETLENGTH() for CLOB. Both functions will count actual characters (not bytes).

See the linked documentation if you do need bytes.

If you want your PATH variable to correctly update based on your current working directory, add this to the end of your .bashrc-equivalent (or after anything that defines PATH):

__OLD_PATH=$PATH
function updatePATHForNPM() {
  export PATH=$(npm bin):$__OLD_PATH
}

function node-mode() {
  PROMPT_COMMAND=updatePATHForNPM
}

function node-mode-off() {
  unset PROMPT_COMMAND
  PATH=$__OLD_PATH
}

# Uncomment to enable node-mode by default:
# node-mode

This may add a short delay every time the bash prompt gets rendered (depending on the size of your project, most likely), so it's disabled by default.

You can enable and disable it within your terminal by running node-mode and node-mode-off, respectively.

As mentioned several times here

-webkit-appearance:none;

also removes the arrows, which is not what you want in most cases.

An easy workaround I found is to simply use select2 instead of select. You can re-style a select2 element as well, and most importantly, select2 looks the same on Windows, Android, iOS and Mac.

Your question isn't very clear. From your own answer, I can tell better what you are trying to do:

public static String[] removeElements(String[] input, String deleteMe) {
    List result = new LinkedList();

    for(String item : input)
        if(!deleteMe.equals(item))
            result.add(item);

    return result.toArray(input);
}

NB: This is untested. Error checking is left as an exercise to the reader (I'd throw IllegalArgumentException if either input or deleteMe is null; an empty list on null list input doesn't make sense. Removing null Strings from the array might make sense, but I'll leave that as an exercise too; currently, it will throw an NPE when it tries to call equals on deleteMe if deleteMe is null.)

Choices I made here:

I used a LinkedList. Iteration should be just as fast, and you avoid any resizes, or allocating too big of a list if you end up deleting lots of elements. You could use an ArrayList, and set the initial size to the length of input. It likely wouldn't make much of a difference.

Option 1

Use float:left on both div elements and set a % width for both div elements with a combined total width of 100%.

Use box-sizing: border-box; on the floating div elements. The value border-box forces the padding and borders into the width and height instead of expanding it.

Use clearfix on the <div id="wrapper"> to clear the floating child elements which will make the wrapper div scale to the correct height.

.clearfix:after {
   content: " "; 
   visibility: hidden;
   display: block;
   height: 0;
   clear: both;
}

#first, #second{
  box-sizing: border-box;
  -moz-box-sizing: border-box;
  -webkit-box-sizing: border-box;
}

#wrapper {
    width: 500px;
    border: 1px solid black;
}
#first {
    border: 1px solid red;
    float:left;
    width:50%;
}
#second {
    border: 1px solid green;
    float:left;
    width:50%;
}

http://jsfiddle.net/dqC8t/3381/

Option 2

Use position:absolute on one element and a fixed width on the other element.

Add position:relative to <div id="wrapper"> element to make child elements absolutely position to the <div id="wrapper"> element.

#wrapper {
    width: 500px;
    border: 1px solid black;
    position:relative;
}
#first {
    border: 1px solid red;
    width:100px;
}
#second {
    border: 1px solid green;
    position:absolute;
    top:0;
    left:100px;
    right:0;
}

http://jsfiddle.net/dqC8t/3382/

Option 3

Use display:inline-block on both div elements and set a % width for both div elements with a combined total width of 100%.

And again (same as float:left example) use box-sizing: border-box; on the div elements. The value border-box forces the padding and borders into the width and height instead of expanding it.

NOTE: inline-block elements can have spacing issues as it is affected by spaces in HTML markup. More information here: https://css-tricks.com/fighting-the-space-between-inline-block-elements/

#first, #second{
  box-sizing: border-box;
  -moz-box-sizing: border-box;
  -webkit-box-sizing: border-box;
}

#wrapper {
    width: 500px;
    border: 1px solid black;
    position:relative;
}

#first {
    width:50%;
    border: 1px solid red;
    display:inline-block;
}

#second {
    width:50%;
    border: 1px solid green;
    display:inline-block;
}

http://jsfiddle.net/dqC8t/3383/

A final option would be to use the new display option named flex, but note that browser compatibility might come in to play:

http://caniuse.com/#feat=flexbox

http://www.sketchingwithcss.com/samplechapter/cheatsheet.html

No, Mockito does not support this.

This might not be the answer you're looking for, but what you're seeing is a symptom of not applying the design principle:

Favor composition over inheritance

If you extract a strategy instead of extending a super class the problem is gone.

If however you are not allowed to change the code, but you must test it anyway, and in this awkward way, there is still hope. With some AOP tools (for example AspectJ) you can weave code into the super class method and avoid its execution entirely (yuck). This doesn't work if you're using proxies, you have to use bytecode modification (either load time weaving or compile time weaving). There are be mocking frameworks that support this type of trick as well, like PowerMock and PowerMockito.

I suggest you go for the refactoring, but if that is not an option you're in for some serious hacking fun.

@RequestMapping has a String[] value parameter, so you should be able to specify multiple values like this:

@RequestMapping(value={"", "/", "welcome"})

Suppose you are calling a web service using HttpWebRequest and HttpWebResponse, because .Net client doest support the structure of the WSLD that your are trying to consume.

In that case you can add the security credentials on the headers like:

<soap:Envelpe>
<soap:Header>
    <wsse:Security soap:mustUnderstand='true' xmlns:wsse='http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd' xmlns:wsu='http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd'><wsse:UsernameToken wsu:Id='UsernameToken-3DAJDJSKJDHFJASDKJFKJ234JL2K3H2K3J42'><wsse:Username>YOU_USERNAME/wsse:Username><wsse:Password Type='http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-username-token-profile-1.0#PasswordText'>YOU_PASSWORD</wsse:Password><wsse:Nonce EncodingType='http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-soap-message-security-1.0#Base64Binary'>3WSOKcKKm0jdi3943ts1AQ==</wsse:Nonce><wsu:Created>2015-01-12T16:46:58.386Z</wsu:Created></wsse:UsernameToken></wsse:Security>
</soapHeather>
<soap:Body>
</soap:Body>


</soap:Envelope>

You can use SOAPUI to get the wsse Security, using the http log.

Be careful because it is not a safe scenario.

When your are three tables or more, just add union and left outer join:

select a.col1, b.col2, a.col3, b.col4, a.category_id 
from 
(
    select category_id from a
    union
    select category_id from b
) as c
left outer join a on a.category_id = c.category_id
left outer join b on b.category_id = c.category_id

No need of storing resultSet values into String and again setting into POJO class. Instead set at the time you are retrieving.

Or best way switch to ORM tools like hibernate instead of JDBC which maps your POJO object direct to database.

But as of now use this:

List<User> users=new ArrayList<User>();

while(rs.next()) {
   User user = new User();      
   user.setUserId(rs.getString("UserId"));
   user.setFName(rs.getString("FirstName"));
  ...
  ...
  ...


  users.add(user);
} 

// Month here is 1-indexed (January is 1, February is 2, etc). This is
// because we're using 0 as the day so that it returns the last day
// of the last month, so you have to add 1 to the month number 
// so it returns the correct amount of days
function daysInMonth (month, year) {
    return new Date(year, month, 0).getDate();
}

// July
daysInMonth(7,2009); // 31
// February
daysInMonth(2,2009); // 28
daysInMonth(2,2008); // 29

Instead of using the ifelse as in the above example, one can also prefilter the data prior to labeling based on some threshold values, this saves a lot of work for the plotting device:

xlimit <- 36
ylimit <- 24
ggplot(myData)+geom_point(aes(myX,myY))+
    geom_label(data=myData[myData$myX > xlimit & myData$myY> ylimit,], aes(myX,myY,myLabel))

you've had your sed explanation, now you can use just the shell, no need external commands

for file in F0000*
do
    echo mv "$file" "${file/#F0000/F000}"
    # ${file/#F0000/F000} means replace the pattern that starts at beginning of string
done

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.

if (position ==0) {
    if (rYes.isChecked()) {
        Toast.makeText(SportActivity.this, "yes ur answer is right", Toast.LENGTH_LONG).show();
    } else if (rNo.isChecked()) {
        Toast.makeText(SportActivity.this, "no.ur answer is wrong", Toast.LENGTH_LONG).show();
    }
}

This code is supposed to select both check boxes.
Is there a problem with it?

As mentioned by others in this thread, don't forget to explicitly set the width and height attributes in the svg like so:

<svg id="some_id" data-name="some_name" xmlns="http://www.w3.org/2000/svg"
     viewBox="0 0 26 42"
     width="26px" height="42px">

if you don't do that no js manipulation can help you as gmaps will not have a frame of reference and always use a standard size.

(i know it has been mentioned in some comments, but they are easy to miss. This information helped me in various cases)

I think your problem is likely related to your spring.config.location not ending the path with "/".

Quote the docs

If spring.config.location contains directories (as opposed to files) they should end in / (and will be appended with the names generated from spring.config.name before being loaded).

http://docs.spring.io/spring-boot/docs/current/reference/htmlsingle/#boot-features-external-config-application-property-files

You can use pure Python to do it:

import json
list = [1, 2, (3, 4)] # Note that the 3rd element is a tuple (3, 4)
json.dumps(list) # '[1, 2, [3, 4]]'

Maybe you can use measure:

measureProgressBar() {
    this.refs.welcome.measure(this.logProgressBarLayout);
},

logProgressBarLayout(ox, oy, width, height, px, py) {
  console.log("ox: " + ox);
  console.log("oy: " + oy);
  console.log("width: " + width);
  console.log("height: " + height);
  console.log("px: " + px);
  console.log("py: " + py);
}

As described by the link I've given in comment, this

$('p[MyTag]').each(function(index) {
  document.write(index + ': ' + $(this).text() + "<br>");});

works (playable example).

The default port 1433 is used when there is only one SQL Server named instance running on the computer.

When multiple SQL Server named instances are running, they run by default under a dynamic port (49152–65535). In this scenario, an application will connect to the SQL Server Browser service port (UDP 1434) to get the dynamic port and then connect to the dynamic port directly.

https://docs.microsoft.com/en-us/sql/sql-server/install/configure-the-windows-firewall-to-allow-sql-server-access

What you do is add a welcome file in your web.xml

<welcome-file-list>
    <welcome-file>index.html</welcome-file>
</welcome-file-list>

And then add this to your servlet mappings so that when someone goes to the root of your application, they get sent to index.html internally and then the mapping will internally send them to the servlet you map it to

<servlet-mapping>
    <servlet-name>MainActions</servlet-name>
    <url-pattern>/main</url-pattern>
</servlet-mapping>
<servlet-mapping>
    <servlet-name>MainActions</servlet-name>
    <url-pattern>/index.html</url-pattern>
</servlet-mapping>

End result: You visit /Application, but you are presented with /Application/MainActions servlet without disrupting any other root requests.

Get it? So your app still sits at a sub url, but automatically gets presented when the user goes to the root of your site. This allows you to have the /images/bob.img still go to the regular place, but '/' is your app.

I recommend the following syntax for readability.

<? if ($condition): ?>
  <p>Content</p>
<? elseif ($other_condition): ?>
  <p>Other Content</p>
<? else: ?>
  <p>Default Content</p>
<? endif; ?>

Note, omitting php on the open tags does require that short_open_tags is enabled in your configuration, which is the default. The relevant curly-brace-free conditional syntax is always enabled and can be used regardless of this directive.

void foo<TOne, TTwo>() 
   where TOne : BaseOne
   where TTwo : BaseTwo

More info here:
http://msdn.microsoft.com/en-us/library/d5x73970.aspx

When I tried '.* in windows (Notepad ++) it would match everything after first ' until end of last line.

To capture everything until end of that line I typed the following:

'.*?\n

This would only capture everything from ' until end of that line.

IMHO, this looks better:

Chess *array = malloc(size * sizeof(Chess)); // array of pointers of size `size`

for ( int i =0; i < SOME_VALUE; ++i )
{
    array[i] = (Chess) malloc(sizeof(Chess));
}

Your error shows you are not compiling file with the definition of the insert function. Update your command to include the file which contains the definition of that function and it should work.

  a {
    color: unset;
    text-decoration: unset;
  }

Here is an example

Query query = em.createQuery("from Student");
             java.util.List list = query.getResultList();
             for (int i = 0; i < list.size(); i++) 
             {

                 student = (Student) list.get(i);
                 System.out.println(student.id  + "  " + student.age + " " + student.name + " " + student.prenom);

             }

self is the self-reference in a Class. Your code is not in a class, you only have functions defined. You have to wrap your methods in a class, like below. To use the method main(), you first have to instantiate an object of your class and call the function on the object.

Further, your function setavalue should be in __init___, the method called when instantiating an object. The next step you probably should look at is supplying the name as an argument to init, so you can create arbitrarily named objects of the Name class ;)

class Name:
    def __init__(self):
        self.myname = "harry"

    def printaname(self):
        print "Name", self.myname     

    def main(self):
        self.printaname()

if __name__ == "__main__":
    objName = Name()
    objName.main() 

Have a look at the Classes chapter of the Python tutorial an at Dive into Python for further references.

columnDefinition will override the sql DDL generated by hibernate for this particular column, it is non portable and depends on what database you are using. You can use it to specify nullable, length, precision, scale... ect.

Using $_SERVER['HTTP_HOST'] gets me (subdomain.)maindomain.extension. It seems like the easiest solution to me.

If you're actually 'redirecting' through an iFrame, you could add a GET parameter which states the domain.

<iframe src="myserver.uk.com?domain=one.com"/>

And then you could set a session variable that persists this data throughout your application.

Your question is a little off the mark. In particular, you say "that the element needs to be added into the first empty slot in an array, lie (sic) a Java push function would do."

1. Java's Array does not have a push operation - JavaScript does. Java and JavaScript are two very different languages
2. JavaScript's push function does not behave as you describe. When you "push" a value into a JavaScript array, the array is extended by one element, and that new element is assigned the pushed value, see: Mozilla's Array.prototype.push function docs

The verb "Push" is not something that is used with an Array in any language that I know of except JavaScript. I suspect that it's only in JavaScript because it could be there (since JavaScript is a completely dynamic language). I'm pretty sure it wasn't designed in intentionally.

A JavaScript-style Push operation in C# could be written in this somewhat inefficient manner:

int [] myArray = new int [] {1, 2, 3, 4};
var tempList = myArray.ToList();
tempList.Add(5);
myArray = tempList.ToArray();   //equiv: myArray.Push(5);

"Push" is used in some types of containers, particularly Stacks, Queues and Deques (which get two pushes - one from the front, one from the back). I urge you not to include Push as a verb in your explanation of arrays. It adds nothing to a CS student's vocabulary.

In C#, as in most traditional procedural languages, an array is a collection of elements of a single type, contained in a fixed length contiguous block of memory. When you allocate an array, the space for every array element is allocated (and, in C# those elements are initialized to the default value of the type, null for reference types).

In C#, arrays of reference types are filled with object references; arrays of value types are filled with instances of that value type. As a result, an array of 4 strings uses the same memory as an array of 4 instance of your application class (since they are both reference types). But, an array of 4 DateTime instances is significantly longer that of an array of 4 short integers.

In C#, an instance of an array is an instance of System.Array, a reference type. Arrays have a few properties and methods (like the Length property). Otherwise, there isn't much you can do with an array: you can read (or write) from (or to) individual elements using an array index. Arrays of type T also implement IEnumerable<T>, so you can iterate through the elements of an array.

Arrays are mutable (the values in an array can be written to), but they have a fixed length - they can't be extended or shortened. They are ordered, and they can't be re-arranged (except by swizzling the values manually).

C# arrays are covariant. If you were to ask the C# language designers, this would be the feature they regret the most. It's one of the few ways you can break C# type safety. Consider this code (assuming that Cat and Dog classes inherit from Animal):

Cat[] myCats = new Cat[]{myCat, yourCat, theirCat};
Animal[] animals = (Animal[]) myCats;     //legal but dangerous
animals[1] = new Dog();                   //heading off the cliff
myCats[1].Speak();                        //Woof!

That "feature" is the result of the lack of generic types and explicit covariance/contravariance in the initial version of the .NET Framework and the urge to copy a Java "feature".

Arrays do show up in many core .NET APIs (for example, System.Reflection). They are there, again, because the initial release did not support generic collections.

In general, an experienced C# programmer will not use many arrays in his applications, preferring to use more capable collections such as List<T>, Dictionary<TKey, TValue>, HashSet<T> and friends. In particular, that programmer will tend to pass collections around using IEnumerable<T> an interface that all collections implement. The big advantage of using IEnumerable<T> as parameters and return types (where possible and logical) is that collections accessed via IEnumerable<T> references are immutable. It's kinda-sorta like using const correctly in C++.

One thing you might consider adding in to your lectures on arrays - after everyone has mastered the basics - is the new Span<T> type. Spans may make C# arrays useful.

Finally, LINQ (Language Integrated Query) introduced a lot of functionality to collections (by adding Extension Methods to IEnumerable<T>). Make sure your student do not have a using System.Linq; statement up at the top of their code - mixing LINQ in to a beginning student's class on arrays would bewilder him or her.

BTW: what kind of class is it you teach? At what level?

Technically you could do it with a straight TCP socket. I wouldn't recommend it however. I would highly recommend you use Apache HttpClient instead. In its simplest form:

GetMethod get = new GetMethod("http://httpcomponents.apache.org");
// execute method and handle any error responses.
...
InputStream in = get.getResponseBodyAsStream();
// Process the data from the input stream.
get.releaseConnection();

and here is a more complete example.

Try this:

Dim myarray As Variant
myarray = Array("Cat", "Dog", "Rabbit")

Syntax

To create user in MySQL/MariaDB 5.7.6 and higher, use CREATE USER syntax:

CREATE USER 'new_user'@'localhost' IDENTIFIED BY 'new_password';

then to grant all access to the database (e.g. my_db), use GRANT Syntax, e.g.

GRANT ALL ON my_db.* TO 'new_user'@'localhost';

^{Where ALL (priv_type) can be replaced with specific privilege such as SELECT, INSERT, UPDATE, ALTER, etc.}

Then to reload newly assigned permissions run:

FLUSH PRIVILEGES;

Executing

To run above commands, you need to run mysql command and type them into prompt, then logout by quit command or Ctrl-D.

To run from shell, use -e parameter (replace SELECT 1 with one of above commands):

$ mysql -e "SELECT 1"

or print statement from the standard input:

$ echo "FOO STATEMENT" | mysql

If you've got Access denied with above, specify -u (for user) and -p (for password) parameters, or for long-term access set your credentials in ~/.my.cnf, e.g.

[client]
user=root
password=root

Shell integration

For people not familiar with MySQL syntax, here are handy shell functions which are easy to remember and use (to use them, you need to load the shell functions included further down).

Here is example:

$ mysql-create-user admin mypass
| CREATE USER 'admin'@'localhost' IDENTIFIED BY 'mypass'

$ mysql-create-db foo
| CREATE DATABASE IF NOT EXISTS foo

$ mysql-grant-db admin foo
| GRANT ALL ON foo.* TO 'admin'@'localhost'
| FLUSH PRIVILEGES

$ mysql-show-grants admin
| SHOW GRANTS FOR 'admin'@'localhost'
| Grants for admin@localhost                                                                                   
| GRANT USAGE ON *.* TO 'admin'@'localhost' IDENTIFIED BY PASSWORD '*6C8989366EAF75BB670AD8EA7A7FC1176A95CEF4' |
| GRANT ALL PRIVILEGES ON `foo`.* TO 'admin'@'localhost'

$ mysql-drop-user admin
| DROP USER 'admin'@'localhost'

$ mysql-drop-db foo
| DROP DATABASE IF EXISTS foo

To use above commands, you need to copy&paste the following functions into your rc file (e.g. .bash_profile) and reload your shell or source the file. In this case just type source .bash_profile:

# Create user in MySQL/MariaDB.
mysql-create-user() {
  [ -z "$2" ] && { echo "Usage: mysql-create-user (user) (password)"; return; }
  mysql -ve "CREATE USER '$1'@'localhost' IDENTIFIED BY '$2'"
}

# Delete user from MySQL/MariaDB
mysql-drop-user() {
  [ -z "$1" ] && { echo "Usage: mysql-drop-user (user)"; return; }
  mysql -ve "DROP USER '$1'@'localhost';"
}

# Create new database in MySQL/MariaDB.
mysql-create-db() {
  [ -z "$1" ] && { echo "Usage: mysql-create-db (db_name)"; return; }
  mysql -ve "CREATE DATABASE IF NOT EXISTS $1"
}

# Drop database in MySQL/MariaDB.
mysql-drop-db() {
  [ -z "$1" ] && { echo "Usage: mysql-drop-db (db_name)"; return; }
  mysql -ve "DROP DATABASE IF EXISTS $1"
}

# Grant all permissions for user for given database.
mysql-grant-db() {
  [ -z "$2" ] && { echo "Usage: mysql-grand-db (user) (database)"; return; }
  mysql -ve "GRANT ALL ON $2.* TO '$1'@'localhost'"
  mysql -ve "FLUSH PRIVILEGES"
}

# Show current user permissions.
mysql-show-grants() {
  [ -z "$1" ] && { echo "Usage: mysql-show-grants (user)"; return; }
  mysql -ve "SHOW GRANTS FOR '$1'@'localhost'"
}

Note: If you prefer to not leave trace (such as passwords) in your Bash history, check: How to prevent commands to show up in bash history?

For an example if you want to have a loop that stopped when it has counted all of the people in a group. We will consider the value X to be equal to the number of the people in the group, and the counter will be used to count all of the people in the group. To write the

while(!condition)

the code will be:

int x = people;

int counter = 0;

while(x != counter)

{

counter++;

}

return 0;

I haven't checked this lately, but I know in the past with Oracle that the JDBC driver would reserve a chunk of memory during query execution to hold the result set coming back. The size of the memory chunk is dependent on the column definitions and the fetch size. So the length of the varchar2 columns affects how much memory is reserved. This caused serious performance issues for me years ago as we always used varchar2(4000) (the max at the time) and garbage collection was much less efficient than it is today.

Update: Per konrad.kruczynski's answer, the following is true for versions of .NET up to and including 4.0.

You can use the MethodImplAttribute class to prevent a method from being inlined...

[MethodImpl(MethodImplOptions.NoInlining)]
void SomeMethod()
{
    // ...
}

...but there is no way to do the opposite and force it to be inlined.

You can't change CSS properties directly with jQuery. But you can achieve the same effect in at least two ways.

Dynamically Load CSS from a File

function updateStyleSheet(filename) {
    newstylesheet = "style_" + filename + ".css";

    if ($("#dynamic_css").length == 0) {
        $("head").append("<link>")
        css = $("head").children(":last");

        css.attr({
          id: "dynamic_css",
          rel:  "stylesheet",
          type: "text/css",
          href: newstylesheet
        });
    } else {
        $("#dynamic_css").attr("href",newstylesheet);
    }
}

The example above is copied from:

• How To Switch CSS Files On-The-Fly Using jQuery

Dynamically Add a Style Element

$("head").append('<style type="text/css"></style>');
var newStyleElement = $("head").children(':last');
newStyleElement.html('.red{background:green;}');

The example code is copied from this JSFiddle fiddle originally referenced by Alvaro in their comment.

CSS in emails is a pain. You'll probably need tables unfortunately, because CSS is not greatly supported in all email clients.

That said, use an HTML Transitional DOCTYPE, not XHTML, and use <center>.

This will work for original question asked:

DECLARE @Result INT;
SELECT @Result = COUNT(*)
FROM  TableName
WHERE Condition

I was getting this error when running xcodebuild from commandline for integration tests on my work's CI. I managed to get it working by setting the project level setting to codesign. For some reason the target setting was being ignored and it reverted to the project's setting.

You can simply use BeginInvokeOnMainThread(). It invokes an Action on the device main (UI) thread.

Device.BeginInvokeOnMainThread(() => { displayToast("text to display"); });

It is simple and works perfectly for me!

EDIT : Works if you're using C# Xamarin

You can sort-of do that with objects, as in the following.

Dim w As New Widget

But not with strings or variants.

 moment(dateString, 'YYYY-MM-DD', true).isValid() ||
 moment(dateString, 'YYYY-M-DD', true).isValid() ||
 moment(dateString, 'YYYY-MM-D', true).isValid();

Actually I would do it this way:

L1 is the index list of elements satisfying condition 1;(maybe you can use somelist.index(condition1) or np.where(condition1) to get L1.)

Similarly, you get L2, a list of elements satisfying condition 2;

Then you find intersection using intersect(L1,L2).

You can also find intersection of multiple lists if you get multiple conditions to satisfy.

Then you can apply index in any other array, for example, x.

If you want to import A.ipynb in B.ipynb write

import import_ipynb
import A

in B.ipynb.

The import_ipynb module I've created is installed via pip:

pip install import_ipynb

It's just one file and it strictly adheres to the official howto on the jupyter site.

PS It also supports things like from A import foo, from A import * etc

%Started Program or Command% | taskkill /F /IM cmd.exe

Example:

notepad.exe | taskkill /F /IM cmd.exe

Indeed, the docker registry as of today (sha 2e2f252f3c88679f1207d87d57c07af6819a1a17e22573bcef32804122d2f305) does not handle paths containing upper-case characters. This is obviously a poor design choice, probably due to wanting to maintain compatible with certain operating systems that do not distinguish case at the file level (ie, windows).

If one authenticates for a scope and tries to fetch a non-existing repository with all lowercase, the output is

(auth step not shown)
curl -s -H "Authorization: Bearer $TOKEN" -X GET https://$LOCALREGISTRY/v2/test/someproject/tags/list
{"errors":[{"code":"UNAUTHORIZED","message":"authentication required","detail":[{"Type":"repository","Class":"","Name":"test/someproject","Action":"pull"}]}]}

However, if one tries to do this with an uppercase component, only 404 is returned:

(authorization step done but not shown here)
$ curl -s -H "Authorization: Bearer $TOKEN" -X GET https://docker.uibk.ac.at:443/v2/test/Someproject/tags/list

404 page not found

Yes, you can use the CSS feature named @font-face. It has only been officially approved in CSS3, but been proposed and implemented in CSS2 and has been supported in IE for quite a long time.

You declare it in the CSS like this:

 @font-face { font-family: Delicious; src: url('Delicious-Roman.otf'); } 
 @font-face { font-family: Delicious; font-weight: bold; src: url('Delicious-Bold.otf');}

Then, you can just reference it like the other standard fonts:

 h3 { font-family: Delicious, sans-serif; }

So, in this case,

<html>
   <head>
    <style>
      @font-face { font-family: JuneBug; src: url('JUNEBUG.TTF'); } 
      h1 {
         font-family: JuneBug
      }
    </style>
   </head>
   <body>
      <h1>Hey, June</h1>
   </body>
</html>

And you just need to put the JUNEBUG.TFF in the same location as the html file.

I downloaded the font from the dafont.com website:

http://www.dafont.com/junebug.font

The different names are just ways of packaging java apps.

Skinny – Contains ONLY the bits you literally type into your code editor, and NOTHING else.

Thin – Contains all of the above PLUS the app’s direct dependencies of your app (db drivers, utility libraries, etc).

Hollow – The inverse of Thin – Contains only the bits needed to run your app but does NOT contain the app itself. Basically a pre-packaged “app server” to which you can later deploy your app, in the same style as traditional Java EE app servers, but with important differences.

Fat/Uber – Contains the bit you literally write yourself PLUS the direct dependencies of your app PLUS the bits needed to run your app “on its own”.

Source: Article from Dzone

Reposted from: https://stackoverflow.com/a/57592130/9470346

For Windows 7:
Control Panel > Programs > Programs and Features > Turn Windows Features On or Off > to turn on IIS click on Check box.

Make the (LinearLayout) android:layout_width="match_parent" and the TextView's android:layout_gravity="right"

Yet another possibility not yet mentioned here is to use NumPy tile:

a = numpy.tile(numpy.nan, (3, 3))

Also gives

array([[ NaN,  NaN,  NaN],
       [ NaN,  NaN,  NaN],
       [ NaN,  NaN,  NaN]])

I don't know about speed comparison.

Crude, but does what you want, breaks the execution scope:

$(function(){
setTimeout(function(){
//Code to call
},1);
});

public class TinyUrl {
    
        private final String characterMap = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
        private final int charBase = characterMap.length();
    
        public String covertToCharacter(int num){
            StringBuilder sb = new StringBuilder();
    
            while (num > 0){
                sb.append(characterMap.charAt(num % charBase));
                num /= charBase;
            }
    
            return sb.reverse().toString();
        }
    
        public int covertToInteger(String str){
            int num = 0;
            for(int i = 0 ; i< str.length(); i++)
                num += characterMap.indexOf(str.charAt(i)) * Math.pow(charBase , (str.length() - (i + 1)));
    
            return num;
        }
}
    
class TinyUrlTest{
    
    public static void main(String[] args) {
        TinyUrl tinyUrl = new TinyUrl();
        int num = 122312215;
        String url = tinyUrl.covertToCharacter(num);
        System.out.println("Tiny url:  " + url);
        System.out.println("Id: " + tinyUrl.covertToInteger(url));
    }
}

Solved this issue by increasing swap size:

https://askubuntu.com/questions/1075505/how-do-i-increase-swapfile-in-ubuntu-18-04

Things you can add to declarations: [] in modules

• Pipe
• Directive
• Component

Pro Tip: The error message explains it - Please add a @Pipe/@Directive/@Component annotation.

Here's another benchmark inspired by this gist. It compares concatenation (+), appending (<<) and interpolation (#{}) for dynamic and predefined strings.

require 'benchmark'

# we will need the CAPTION and FORMAT constants:
include Benchmark

count = 100_000


puts "Dynamic strings"

Benchmark.benchmark(CAPTION, 7, FORMAT) do |bm|
  bm.report("concat") { count.times { 11.to_s +  '/' +  12.to_s } }
  bm.report("append") { count.times { 11.to_s << '/' << 12.to_s } }
  bm.report("interp") { count.times { "#{11}/#{12}" } }
end


puts "\nPredefined strings"

s11 = "11"
s12 = "12"
Benchmark.benchmark(CAPTION, 7, FORMAT) do |bm|
  bm.report("concat") { count.times { s11 +  '/' +  s12 } }
  bm.report("append") { count.times { s11 << '/' << s12 } }
  bm.report("interp") { count.times { "#{s11}/#{s12}"   } }
end

output:

Dynamic strings
              user     system      total        real
concat    0.050000   0.000000   0.050000 (  0.047770)
append    0.040000   0.000000   0.040000 (  0.042724)
interp    0.050000   0.000000   0.050000 (  0.051736)

Predefined strings
              user     system      total        real
concat    0.030000   0.000000   0.030000 (  0.024888)
append    0.020000   0.000000   0.020000 (  0.023373)
interp    3.160000   0.160000   3.320000 (  3.311253)

Conclusion: interpolation in MRI is heavy.

Note that the file:/// scheme does not work on the compact framework, at least it doesn't with 5.0.

You will need to use the following:

string appDir = Path.GetDirectoryName(
    Assembly.GetExecutingAssembly().GetName().CodeBase);
webBrowser1.Url = new Uri(Path.Combine(appDir, @"Documentation\index.html"));

With .value and INPUT tag

<HTML>
  <HEAD>
    <TITLE>Sum</TITLE>

    <script type="text/javascript">
      function sum()
      {

         var num1 = document.myform.number1.value;
         var num2 = document.myform.number2.value;
         var sum = parseInt(num1) + parseInt(num2);
         document.getElementById('add').value = sum;
      }
    </script>
  </HEAD>

  <BODY>
    <FORM NAME="myform">
      <INPUT TYPE="text" NAME="number1" VALUE=""/> + 
      <INPUT TYPE="text" NAME="number2" VALUE=""/>
      <INPUT TYPE="button" NAME="button" Value="=" onClick="sum()"/>
      <INPUT TYPE="text" ID="add" NAME="result" VALUE=""/>
    </FORM>

  </BODY>
</HTML>

with innerHTML and DIV

<HTML>
  <HEAD>
    <TITLE>Sum</TITLE>

    <script type="text/javascript">
      function sum()
      {

         var num1 = document.myform.number1.value;
         var num2 = document.myform.number2.value;
         var sum = parseInt(num1) + parseInt(num2);
         document.getElementById('add').innerHTML = sum;
      }
    </script>
  </HEAD>

  <BODY>
    <FORM NAME="myform">
      <INPUT TYPE="text" NAME="number1" VALUE=""/> + 
      <INPUT TYPE="text" NAME="number2" VALUE=""/>
      <INPUT TYPE="button" NAME="button" Value="=" onClick="sum()"/>
      <DIV  ID="add"></DIV>
    </FORM>

  </BODY>
</HTML>

Use combobox and add the following css .ddTitleText{ display : none; }

No more text, just images.

Assuming you do not want to restrict the rows that are returned because you are aggregating other values as well, you can do it like this:

select count(case when Position = 'Manager' then 1 else null end) as ManagerCount
from ...

Let's say within the same column you had values of Manager, Supervisor, and Team Lead, you could get the counts of each like this:

select count(case when Position = 'Manager' then 1 else null end) as ManagerCount,
    count(case when Position = 'Supervisor' then 1 else null end) as SupervisorCount,
    count(case when Position = 'Team Lead' then 1 else null end) as TeamLeadCount,
from ...

Based on all your remarks here is my proposal that worked for me :

 private final class CustomHttpServletRequest extends HttpServletRequestWrapper {

    private final Map<String, String[]> queryParameterMap;
    private final Charset requestEncoding;

    public CustomHttpServletRequest(HttpServletRequest request) {
        super(request);
        queryParameterMap = getCommonQueryParamFromLegacy(request.getParameterMap());

        String encoding = request.getCharacterEncoding();
        requestEncoding = (encoding != null ? Charset.forName(encoding) : StandardCharsets.UTF_8);
    }

    private final Map<String, String[]> getCommonQueryParamFromLegacy(Map<String, String[]> paramMap) {
        Objects.requireNonNull(paramMap);

        Map<String, String[]> commonQueryParamMap = new LinkedHashMap<>(paramMap);

        commonQueryParamMap.put(CommonQueryParams.PATIENT_ID, new String[] { paramMap.get(LEGACY_PARAM_PATIENT_ID)[0] });
        commonQueryParamMap.put(CommonQueryParams.PATIENT_BIRTHDATE, new String[] { paramMap.get(LEGACY_PARAM_PATIENT_BIRTHDATE)[0] });
        commonQueryParamMap.put(CommonQueryParams.KEYWORDS, new String[] { paramMap.get(LEGACY_PARAM_STUDYTYPE)[0] });

        String lowerDateTime = null;
        String upperDateTime = null;

        try {
            String studyDateTime = new SimpleDateFormat("yyyy-MM-dd").format(new SimpleDateFormat("dd-MM-yyyy").parse(paramMap.get(LEGACY_PARAM_STUDY_DATE_TIME)[0]));

            lowerDateTime = studyDateTime + "T23:59:59";
            upperDateTime = studyDateTime + "T00:00:00";

        } catch (ParseException e) {
            LOGGER.error("Can't parse StudyDate from query parameters : {}", e.getLocalizedMessage());
        }

        commonQueryParamMap.put(CommonQueryParams.LOWER_DATETIME, new String[] { lowerDateTime });
        commonQueryParamMap.put(CommonQueryParams.UPPER_DATETIME, new String[] { upperDateTime });

        legacyQueryParams.forEach(commonQueryParamMap::remove);
        return Collections.unmodifiableMap(commonQueryParamMap);

    }

    @Override
    public String getParameter(String name) {
        String[] params = queryParameterMap.get(name);
        return params != null ? params[0] : null;
    }

    @Override
    public String[] getParameterValues(String name) {
        return queryParameterMap.get(name);
    }

    @Override
    public Map<String, String[]> getParameterMap() {
            return queryParameterMap; // unmodifiable to uphold the interface contract.
        }

        @Override
        public Enumeration<String> getParameterNames() {
            return Collections.enumeration(queryParameterMap.keySet());
        }

        @Override
        public String getQueryString() {
            // @see : https://stackoverflow.com/a/35831692/9869013
            // return queryParameterMap.entrySet().stream().flatMap(entry -> Stream.of(entry.getValue()).map(value -> entry.getKey() + "=" + value)).collect(Collectors.joining("&")); // without encoding !!
            return queryParameterMap.entrySet().stream().flatMap(entry -> encodeMultiParameter(entry.getKey(), entry.getValue(), requestEncoding)).collect(Collectors.joining("&"));
        }

        private Stream<String> encodeMultiParameter(String key, String[] values, Charset encoding) {
            return Stream.of(values).map(value -> encodeSingleParameter(key, value, encoding));
        }

        private String encodeSingleParameter(String key, String value, Charset encoding) {
            return urlEncode(key, encoding) + "=" + urlEncode(value, encoding);
        }

        private String urlEncode(String value, Charset encoding) {
            try {
                return URLEncoder.encode(value, encoding.name());
            } catch (UnsupportedEncodingException e) {
                throw new IllegalArgumentException("Cannot url encode " + value, e);
            }
        }

        @Override
        public ServletInputStream getInputStream() throws IOException {
            throw new UnsupportedOperationException("getInputStream() is not implemented in this " + CustomHttpServletRequest.class.getSimpleName() + " wrapper");
        }

    }

note : queryString() requires to process ALL the values for each KEY and don't forget to encodeUrl() when adding your own param values, if required

As a limitation, if you call request.getParameterMap() or any method that would call request.getReader() and begin reading, you will prevent any further calls to request.setCharacterEncoding(...)

I'm going to assume that your lack of quotes around the selector is just a transcription error, but you should check it anyway. Also, I don't see where you are actually giving the form an id. Usually you do this with the htmlAttributes parameter. I don't see you using the signature that has it. Again, though, if the form is submitting at all, this could be a transcription error.

If the selector and the id aren't the problem I'm suspicious that it might be because the click handler is added via markup when you use the Ajax BeginForm extension. You might try using $('form').trigger('submit') or in the worst case, have the click handler on the anchor create a hidden submit button in the form and click it. Or even create your own ajax submission using pure jQuery (which is probably what I would do).

Lastly, you should realize that by replacing the submit button, you're going to totally break this for people who don't have javascript enabled. The way around this is to also have a button hidden using a noscript tag and handle both AJAX and non-AJAX posts on the server.

BTW, it's consider standard practice, Microsoft not withstanding, to add the handlers via javascript not via markup. This keeps your javascript organized in one place so you can more easily see what's going on on the form. Here's an example of how I would use the trigger mechanism.

  $(function() {
      $('form#ajaxForm').find('a.submit-link').click( function() {
           $('form#ajaxForm').trigger('submit');
      }).show();
  }

<% using (Ajax.BeginForm("Update", "Description", new { id = Model.Id },
     new AjaxOptions
     {
       UpdateTargetId = "DescriptionDiv",
       HttpMethod = "post"
     }, new { id = "ajaxForm" } )) {%>
   Description:
   <%= Html.TextBox("Description", Model.Description) %><br />
   <a href="#" class="submit-link" style="display: none;">Save</a>
   <noscript>
       <input type="submit" value="Save" />
   </noscript>
<% } %>

There are some actions which are not working in chrome, inside of the unload event. Alert or confirm boxes are such things.

But what is possible (AFAIK):

1. Open popups (with window.open) - but this will just work, if the popup blocker is disabled for your site
2. Return a simple string (in beforeunload event), which triggers a confirm box, which asks the user if s/he want to leave the page.

Example for #2:

$(window).on('beforeunload', function() {
    return 'Your own message goes here...';
});

Demo: http://jsfiddle.net/PQz5k/

Assuming you are using Windows forms, you could allow the user to select a row and in the delete key click event. It is recommended that you allow the user to select 1 row only and not a group of rows (myDataGridView.MultiSelect = false)

Private Sub pbtnDelete_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnDelete.Click

        If myDataGridView.SelectedRows.Count > 0 Then
            'you may want to add a confirmation message, and if the user confirms delete
            myDataGridView.Rows.Remove(myDataGridView.SelectedRows(0))
        Else
            MessageBox.Show("Select 1 row before you hit Delete")
        End If

    End Sub

Note that this will not delete the row form the database until you perform the delete in the database.

As long as the value of width is auto, the element can have horizontal margin, padding and border without becoming wider than its container (unless of course the sum of margin-left + border-left-width + padding-left + padding-right + border-right-width + margin-right is larger than the container). The width of its content box will be whatever is left when the margin, padding and border have been subtracted from the container’s width.

On the other hand, if you specify width:100%, the element’s total width will be 100% of its containing block plus any horizontal margin, padding and border (unless you’ve used box-sizing:border-box, in which case only margins are added to the 100% to change how its total width is calculated). This may be what you want, but most likely it isn’t.

Source:

http://www.456bereastreet.com/archive/201112/the_difference_between_widthauto_and_width100/

Bash 4's brace expansion has a step feature:

for {0..10..2}; do
  ..
done

No matter if Bash 2/3 (C-style for loop, see answers above) or Bash 4, I would prefer anything over the 'seq' command.

Without using a formula you can do this with 'Text to columns'.

• Select the column that has the trailing spaces in the cells.
• Click 'Text to columns' from the 'Data' tab, then choose option 'Fixed width'.
• Set a break line so the longest text will fit. If your largest cell has 100 characters you can set the breakline on 200 or whatever you want.
• Finish the operation.
• You can now delete the new column Excel has created.

The 'side-effect' is that Excel has removed all trailing spaces in the original column.

Simplified example (with counter):

With Me.lstbox
    .ColumnCount = 2
    .ColumnWidths = "60;60"
    .AddItem
    .List(i, 0) = Company_ID
    .List(i, 1) = Company_name 
    i = i + 1

end with

Make sure to start the counter with 0, not 1 to fill up a listbox.

This macro adds a hyperlink to the worksheet with the same name, I also modify the range to be more flexible, just change the first cell in the code. Works like a charm

Sub hyper()
 Dim cl As Range
 Dim nS As String

 Set MyRange = Sheets("Sheet1").Range("B16")
 Set MyRange = Range(MyRange, MyRange.End(xlDown))

 For Each cl In MyRange
  nS = cl.Value
  cl.Hyperlinks.Add Anchor:=cl, Address:="", SubAddress:="'" & nS & "'" & "!B16", TextToDisplay:=nS
 Next
End Sub

Where x is the collection:

Foo[] foos = x.toArray(new Foo[x.size()]);

This might not be the simplest answer as compared to using array_values().

Try this

$array = array( 0 => 'string1', 2 => 'string2', 4 => 'string3', 5 => 'string4');
$arrays =$array;
print_r($array);
$array=array();
$i=0;
    foreach($arrays as $k => $item)
    {
    $array[$i]=$item;
        unset($arrays[$k]);
        $i++;

    }

print_r($array);

Demo

npx runs a command of a package without installing it explicitly.

Use cases:

• You don't want to install packages neither globally nor locally.
• You don't have permission to install it globally.
• Just want to test some commands.
• Sometime, you want to have a script command (generate, convert something, ...) in package.json to execute something without installing these packages as project's dependencies.

Syntax:

npx [options] [-p|--package <package>] <command> [command-arg]...

Package is optional:

npx   -p uglify-js         uglifyjs --output app.min.js app.js common.js
      +----------------+   +--------------------------------------------+
      package (optional)   command, followed by arguments

For example:

Start a HTTP Server      : npx http-server
Lint code                : npx eslint ./src
                         # Run uglifyjs command in the package uglify-js
Minify JS                : npx -p uglify-js uglifyjs -o app.min.js app.js common.js
Minify CSS               : npx clean-css-cli -o style.min.css css/bootstrap.css style.css
Minify HTML              : npx html-minifier index-2.html -o index.html --remove-comments --collapse-whitespace
Scan for open ports      : npx evilscan 192.168.1.10 --port=10-9999
Cast video to Chromecast : npx castnow http://commondatastorage.googleapis.com/gtv-videos-bucket/sample/ForBiggerFun.mp4

More about command:

• https://docs.npmjs.com/files/package.json#bin
• https://github.com/mishoo/UglifyJS2/blob/master/package.json#L17

The ~/Library/Developer/Xcode/iOS DeviceSupport folder is basically only needed to symbolicate crash logs.

You could completely purge the entire folder. Of course the next time you connect one of your devices, Xcode would redownload the symbol data from the device.

I clean out that folder once a year or so by deleting folders for versions of iOS I no longer support or expect to ever have to symbolicate a crash log for.

I just came across this: Eclipse Colour Themes

Install the plugin and choose from a selection of pre-defined themes, or write your own. Just what I needed!

Another option (just so you've seen it):

$(function () {
    $(".inputs").click(function (e) {
         alert(e.target.id);
    });
});

HTH.

Al WebApi 2, just calling HttpContext.Current.Request.Path;

Just run php --ini and look for Loaded Configuration File in output for the location of php.ini used by your CLI

If you want to overwrite any css in bootstrap use !important

Let's say here is the page header class in bootstrap which have 40px margin on top, my client don't like it and he want it to be 15 on top and 10 on bottom only

.page-header {
    border-bottom: 1px solid #EEEEEE;
    margin: 40px 0 20px;
    padding-bottom: 9px;
}

So I added on class in my site.css file with the same name like this

.page-header
{
    padding-bottom: 9px;
    margin: 15px 0 10px 0px !important;
}

Note the !important with my margin, which will overwrite the margin of bootstarp page-header class margin.

I used this solution, you have to define the height and width of your screen using MediaQuery:

 Container(
        height: MediaQuery.of(context).size.height,
        width: MediaQuery.of(context).size.width
  )

In version 0.18.1 is added dt.weekday_name:

print df
    my_dates  myvals
0 2015-01-01       1
1 2015-01-02       2
2 2015-01-03       3

print df.dtypes
my_dates    datetime64[ns]
myvals               int64
dtype: object

df['day_of_week'] = df['my_dates'].dt.weekday_name
print df
    my_dates  myvals day_of_week
0 2015-01-01       1    Thursday
1 2015-01-02       2      Friday
2 2015-01-03       3    Saturday

Another solution with assign:

print df.assign(day_of_week = df['my_dates'].dt.weekday_name)
    my_dates  myvals day_of_week
0 2015-01-01       1    Thursday
1 2015-01-02       2      Friday
2 2015-01-03       3    Saturday

If you merge a commit into your branch, you should get all the history between.

Observe:

$ git init ./
Initialized empty Git repository in /Users/dfarrell/git/demo/.git/
$ echo 'a' > letter
$ git add letter
$ git commit -m 'Initial Letter'
[master (root-commit) 6e59e76] Initial Letter
 1 file changed, 1 insertion(+)
 create mode 100644 letter
$ echo 'b' >> letter
$ git add letter && git commit -m 'Adding letter'
[master 7126e6d] Adding letter
 1 file changed, 1 insertion(+)
$ echo 'c' >> letter; git add letter && git commit -m 'Adding letter'
[master f2458be] Adding letter
 1 file changed, 1 insertion(+)
$ echo 'd' >> letter; git add letter && git commit -m 'Adding letter'
[master 7f77979] Adding letter
 1 file changed, 1 insertion(+)
$ echo 'e' >> letter; git add letter && git commit -m 'Adding letter'
[master 790eade] Adding letter
 1 file changed, 1 insertion(+)
$ git log
commit 790eade367b0d8ab8146596cd717c25fd895302a
Author: Dan Farrell 
Date:   Thu Jul 16 14:21:26 2015 -0500

    Adding letter

commit 7f77979efd17f277b4be695c559c1383d2fc2f27
Author: Dan Farrell 
Date:   Thu Jul 16 14:21:24 2015 -0500

    Adding letter

commit f2458bea7780bf09fe643095dbae95cf97357ccc
Author: Dan Farrell 
Date:   Thu Jul 16 14:21:19 2015 -0500

    Adding letter

commit 7126e6dcb9c28ac60cb86ae40fb358350d0c5fad
Author: Dan Farrell 
Date:   Thu Jul 16 14:20:52 2015 -0500

    Adding letter

commit 6e59e7650314112fb80097d7d3803c964b3656f0
Author: Dan Farrell 
Date:   Thu Jul 16 14:20:33 2015 -0500

    Initial Letter
$ git checkout 6e59e7650314112fb80097d7d3803c964b3656f
$ git checkout 7126e6dcb9c28ac60cb86ae40fb358350d0c5fad
Note: checking out '7126e6dcb9c28ac60cb86ae40fb358350d0c5fad'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by performing another checkout.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -b with the checkout command again. Example:

  git checkout -b new_branch_name

HEAD is now at 7126e6d... Adding letter
$ git checkout -b B 7126e6dcb9c28ac60cb86ae40fb358350d0c5fad
Switched to a new branch 'B'
$ git pull 790eade367b0d8ab8146596cd717c25fd895302a
fatal: '790eade367b0d8ab8146596cd717c25fd895302a' does not appear to be a git repository
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.
$ git merge 7f77979efd17f277b4be695c559c1383d2fc2f27
Updating 7126e6d..7f77979
Fast-forward
 letter | 2 ++
 1 file changed, 2 insertions(+)
$ cat letter
a
b
c
d

EDIT: An unofficial Bootstrap Modal modification has been built to address responsive/mobile issues. This is perhaps the simplest and easiest way to remedy the problem.

There has since been a fix found in one of the issues you discussed earlier

in bootstrap-responsive.css

.modal { 
    position: fixed; 
    top: 3%; 
    right: 3%; 
    left: 3%; 
    width: auto; 
    margin: 0; 
}
.modal-body { 
    height: 60%; 
}

and in bootstrap.css

.modal-body { 
    max-height: 350px; 
    padding: 15px; 
    overflow-y: auto; 
    -webkit-overflow-scrolling: touch; 
 }

For those who don't want to do the build-from-source approach of the (otherwise excellent installer script by John Maddox, the following worked for me when installing on CentOS 6.2. (Adjust your package manager as necessary).

yum install -y {libwmf,lcms,ghostscript,ImageMagick}{,-devel}
gem install rmagick

Again, this is mainly of interest if you use your distro's package manager and would really prefer to keep it sane.

My simple solution:

$("form").children('input[type="submit"]').click();

It is work for me.

Create a cronjob like this to work on every minute

*       *       *       *       *       /usr/bin/php path/to/cron.php &> /dev/null

Interesting link: Why use a VARCHAR when you can use TEXT?

It's about PostgreSQL and MySQL, so the performance analysis is different, but the logic for "explicitness" still holds: Why force yourself to always worry about something that's relevant a small percentage of the time? If you saved an email address to a variable, you'd use a 'string' not a 'string limited to 80 chars'.

It does matter, for example - there is a thing called character expansion

var s1 = "Strasse";
var s2 = "Straße";

s1.Equals(s2, StringComparison.Ordinal);           //false
s1.Equals(s2, StringComparison.InvariantCulture);  //true

With InvariantCulture the ß character gets expanded to ss.

You need to make sure the standalone project you're launching is launched with Python 3. If you are submitting your standalone program through spark-submit then it should work fine, but if you are launching it with python make sure you use python3 to start your app.

Also, make sure you have set your env variables in ./conf/spark-env.sh (if it doesn't exist you can use spark-env.sh.template as a base.)

I just found a solution for this.

Just select tableview and clic Editor -> Arrange -> Send to Front

It worked for me and hope it helps you all.

This isn't so difficult.

Just check your gtk+ toolkit utilities version from terminal:

gtk-launch --version

You can do that with a little help of JS. In the example below, a POST request is being submitted on a button click using the fetch method:

const button = document.getElementById('post-btn');_x000D_
_x000D_
button.addEventListener('click', async _ => {_x000D_
  try {     _x000D_
    const response = await fetch('yourUrl', {_x000D_
      method: 'post',_x000D_
      body: {_x000D_
        // Your body_x000D_
      }_x000D_
    });_x000D_
    console.log('Completed!', response);_x000D_
  } catch(err) {_x000D_
    console.error(`Error: ${err}`);_x000D_
  }_x000D_
});

<button id="post-btn">I'm a button</button>

Try

String regex = "[0-9]+";

or

String regex = "\\d+";

As per Java regular expressions, the + means "one or more times" and \d means "a digit".

Note: the "double backslash" is an escape sequence to get a single backslash - therefore, \\d in a java String gives you the actual result: \d

References:

• Java Regular Expressions

• Java Character Escape Sequences

Edit: due to some confusion in other answers, I am writing a test case and will explain some more things in detail.

Firstly, if you are in doubt about the correctness of this solution (or others), please run this test case:

String regex = "\\d+";

// positive test cases, should all be "true"
System.out.println("1".matches(regex));
System.out.println("12345".matches(regex));
System.out.println("123456789".matches(regex));

// negative test cases, should all be "false"
System.out.println("".matches(regex));
System.out.println("foo".matches(regex));
System.out.println("aa123bb".matches(regex));

Question 1:

Isn't it necessary to add ^ and $ to the regex, so it won't match "aa123bb" ?

No. In java, the matches method (which was specified in the question) matches a complete string, not fragments. In other words, it is not necessary to use ^\\d+$ (even though it is also correct). Please see the last negative test case.

Please note that if you use an online "regex checker" then this may behave differently. To match fragments of a string in Java, you can use the find method instead, described in detail here:

Difference between matches() and find() in Java Regex

Question 2:

Won't this regex also match the empty string, "" ?*

No. A regex \\d* would match the empty string, but \\d+ does not. The star * means zero or more, whereas the plus + means one or more. Please see the first negative test case.

Question 3

Isn't it faster to compile a regex Pattern?

Yes. It is indeed faster to compile a regex Pattern once, rather than on every invocation of matches, and so if performance implications are important then a Pattern can be compiled and used like this:

Pattern pattern = Pattern.compile(regex);
System.out.println(pattern.matcher("1").matches());
System.out.println(pattern.matcher("12345").matches());
System.out.println(pattern.matcher("123456789").matches());

The Mod operator, is roughly equivalent to the MOD function:

number Mod divisor is roughly equivalent to MOD(number, divisor).

I successfully installed Font Awesome using their CDN and javascript include (as described on this page). Then I tried to copy the HTML and CSS to some legacy pages and suddenly I saw empty square boxes instead of the icons.

I saw Daniel's answer (above) and because my legacy CSS file was huge (and years old) I suspected that was the issue. However when I looked in Chrome DevTools it really looked like Font Awesome was loaded:

I was expecting to see the font in strikeout if there was an issue... However I had really exhausted all my options so I checked the Computed Styles and saw clearly that the Font Awesome font was definitely not being used. (See the Rendered font at the bottom)

My legacy CSS file was a mess and I preferred not to touch it, so I cheated by doing this - please don't tell anyone :)

<a class="nav-link fa fa-instagram" style="font-family:FontAwesome;" href="//www.instagram.com/xxxx/" target="_blank"></a>

Also to note, when I upgraded from Font Awesome version 4.7.0 to version 5.4.1 this issue went away! I used this setup guide and this HTML

<a class="nav-link" href="//www.instagram.com/xxxx/" target="_blank"><i class="fab fa-instagram"></i></a>

The simplest way to solve this problem is to place INPUT fields outside the FORM tag and add two hidden fields inside the FORM tag. Then in a submit event listener before the form data gets submitted to server copy values from visible input to the invisible ones.

Here's an example (you can't run it here, since the form action is not set to a real login script):

<!doctype html>_x000D_
<html>_x000D_
<head>_x000D_
  <title>Login & Save password test</title>_x000D_
  <meta charset="utf-8">_x000D_
  <script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>_x000D_
</head>_x000D_
_x000D_
  <body>_x000D_
      <!-- the following fields will show on page, but are not part of the form -->_x000D_
      <input class="username" type="text" placeholder="Username" />_x000D_
      <input class="password" type="password" placeholder="Password" />_x000D_
_x000D_
      <form id="loginForm" action="login.aspx" method="post">_x000D_
        <!-- thw following two fields are part of the form, but are not visible -->_x000D_
        <input name="username" id="username" type="hidden" />_x000D_
        <input name="password" id="password" type="hidden" />_x000D_
        <!-- standard submit button -->_x000D_
        <button type="submit">Login</button>_x000D_
      </form>_x000D_
_x000D_
    <script>_x000D_
      // attache a event listener which will get called just before the form data is sent to server_x000D_
      $('form').submit(function(ev) {_x000D_
        console.log('xxx');_x000D_
        // read the value from the visible INPUT and save it to invisible one_x000D_
        // ... so that it gets sent to the server_x000D_
        $('#username').val($('.username').val());_x000D_
        $('#password').val($('.password').val());_x000D_
      });_x000D_
    </script>_x000D_
_x000D_
  </body>_x000D_
</html>

No, but you can use the DescriptionAttribute to accomplish what you're looking for.

I installed it successfully by pip install https://storage.googleapis.com/tensorflow/mac/cpu/tensorflow-1.8.0-py3-none-any.whl

here a "pure" swift solution

 var d = 1.234567
operator infix ~> {}
@infix func ~> (left: Double, right: Int) -> String {
    if right == 0 {
        return "\(Int(left))"
    }
    var k = 1.0
    for i in 1..right+1 {
        k = 10.0 * k
    }
    let n = Double(Int(left*k)) / Double(k)
    return "\(n)"
}
println("\(d~>2)")
println("\(d~>1)")
println("\(d~>0)")

Second Question

Will my existing implementations continue to work? If not, is there an easy to implement alternative.

The answer is yes, but not without a little work.

$.browser is an official plugin which was included in older versions of jQuery, so like any plugin you can simple copy it and incorporate it into your project or you can simply add it to the end of any jQuery release.

I have extracted the code for you incase you wish to use it.

// Limit scope pollution from any deprecated API
(function() {

    var matched, browser;

// Use of jQuery.browser is frowned upon.
// More details: http://api.jquery.com/jQuery.browser
// jQuery.uaMatch maintained for back-compat
    jQuery.uaMatch = function( ua ) {
        ua = ua.toLowerCase();

        var match = /(chrome)[ \/]([\w.]+)/.exec( ua ) ||
            /(webkit)[ \/]([\w.]+)/.exec( ua ) ||
            /(opera)(?:.*version|)[ \/]([\w.]+)/.exec( ua ) ||
            /(msie) ([\w.]+)/.exec( ua ) ||
            ua.indexOf("compatible") < 0 && /(mozilla)(?:.*? rv:([\w.]+)|)/.exec( ua ) ||
            [];

        return {
            browser: match[ 1 ] || "",
            version: match[ 2 ] || "0"
        };
    };

    matched = jQuery.uaMatch( navigator.userAgent );
    browser = {};

    if ( matched.browser ) {
        browser[ matched.browser ] = true;
        browser.version = matched.version;
    }

// Chrome is Webkit, but Webkit is also Safari.
    if ( browser.chrome ) {
        browser.webkit = true;
    } else if ( browser.webkit ) {
        browser.safari = true;
    }

    jQuery.browser = browser;

    jQuery.sub = function() {
        function jQuerySub( selector, context ) {
            return new jQuerySub.fn.init( selector, context );
        }
        jQuery.extend( true, jQuerySub, this );
        jQuerySub.superclass = this;
        jQuerySub.fn = jQuerySub.prototype = this();
        jQuerySub.fn.constructor = jQuerySub;
        jQuerySub.sub = this.sub;
        jQuerySub.fn.init = function init( selector, context ) {
            if ( context && context instanceof jQuery && !(context instanceof jQuerySub) ) {
                context = jQuerySub( context );
            }

            return jQuery.fn.init.call( this, selector, context, rootjQuerySub );
        };
        jQuerySub.fn.init.prototype = jQuerySub.fn;
        var rootjQuerySub = jQuerySub(document);
        return jQuerySub;
    };

})();

If you're asking why anyone would need a depreciated plugin, I have prepared the following answer.

First and foremost the answer is compatibility. Since jQuery is plugin based, some developers opted to use $.browser and with the latest releases of jQuery which doesn't include $.browser all those plugins where rendered useless.

jQuery did release a migration plugin, which was created for developers to detect whether their plugin's used any depreciated dependencies such as $.browser.

Although this helped developers patch their plugin's. jQuery dropped $.browser completely so the above fix is probably the only solution until your developers patch or incorporate the above.

About: jQuery.browser

Here is my solution. It works with positive and negative numbers. Hope this helps

function findDigitAmount(num) {

   var positiveNumber = Math.sign(num) * num;
   var lengthNumber = positiveNumber.toString();

 return lengthNumber.length;
}


(findDigitAmount(-96456431);    // 8
(findDigitAmount(1524):         // 4

Make sure that st_new.sh does something at the end what you can recognize (like touch /tmp/st_new.tmp when you remove the file first and always start one instance of st_new.sh).
Then make a polling loop. First sleep the normal time you think you should wait, and wait short time in every loop. This will result in something like

max_retry=20
retry=0
sleep 10 # Minimum time for st_new.sh to finish
while [ ${retry} -lt ${max_retry} ]; do
   if [ -f /tmp/st_new.tmp ]; then
      break # call results.sh outside loop
   else
      (( retry = retry + 1 ))
      sleep 1
   fi
done
if [ -f /tmp/st_new.tmp ]; then
   source ../../results.sh 
   rm -f /tmp/st_new.tmp
else
   echo Something wrong with st_new.sh
fi

Has anyone been able to solve this problem? I am using Jscp to scp files using public key authentication (i dont want to use password authentication). Help will be appreciated!!!

This stackoverflow entry is about the host-key checking, and there is no relation to the public key authentication.

As for the public key authentication, try the following sample with your plain(non ciphered) private key,

It sounds like you might have some debugging code in your javascript.

The experience you're describing is typical of code which contain console.log() or any of the other console functionality.

The console object is only activated when the Dev Toolbar is opened. Prior to that, calling the console object will result in it being reported as undefined. After the toolbar has been opened, the console will exist (even if the toolbar is subsequently closed), so your console calls will then work.

There are a few solutions to this:

The most obvious one is to go through your code removing references to console. You shouldn't be leaving stuff like that in production code anyway.

If you want to keep the console references, you could wrap them in an if() statement, or some other conditional which checks whether the console object exists before trying to call it.

Here's a way to do it without turning it into a string first (based on some rudimentary benchmarking, this is about twice as fast as stringifying n first):

>>> n = 43365644
>>> [(n//(10**i))%10 for i in range(math.ceil(math.log(n, 10))-1, -1, -1)]
[4, 3, 3, 6, 5, 6, 4, 4]

Updating this after many years in response to comments of this not working for powers of 10:

[(n//(10**i))%10 for i in range(math.ceil(math.log(n, 10)), -1, -1)][bool(math.log(n,10)%1):]

The issue is that with powers of 10 (and ONLY with these), an extra step is required. ---So we use the remainder in the log_10 to determine whether to remove the leading 0--- We can't exactly use this because floating-point math errors cause this to fail for some powers of 10. So I've decided to cross the unholy river into sin and call upon regex.

In [32]: n = 43

In [33]: [(n//(10**i))%10 for i in range(math.ceil(math.log(n, 10)), -1, -1)][not(re.match('10*', str(n))):]
Out[33]: [4, 3]

In [34]: n = 1000

In [35]: [(n//(10**i))%10 for i in range(math.ceil(math.log(n, 10)), -1, -1)][not(re.match('10*', str(n))):]
Out[35]: [1, 0, 0, 0]

You declare a function pointer variable for the given signature of your functions like this:

bool (* fnptr)();

you can assign it one of your functions:

fnptr = A;

and you can call it:

bool result = fnptr();

You might consider using typedefs to define a type for every distinct function signature you need. This will make the code easier to read and to maintain. i.e. for the signature of functions returning bool with no arguments this could be:

typdef bool (* BoolFn)();

and then you can use like this to declare the function pointer variable for this type:

BoolFn fnptr;

You need to add some arguments. Also, instancing and opening can be put in one line:

fstream file("test.txt", fstream::in | fstream::out | fstream::trunc);

We can use following three ways in Shell Scripting for ternary operator :

    [ $numVar == numVal ] && resVar="Yop" || resVar="Nop"

Or

    resVar=$([ $numVar == numVal ] && echo "Yop" || echo "Nop")

Or

    (( numVar == numVal ? (resVar=1) : (resVar=0) ))

I have faced the same issue. You need to enable the Mixed Mode Authentication first. For more details How to enable Mixed Mode Authentication

If the datepicker is in a row of a grid, try something like

editoptions : {
    dataInit : function (e) {
        $(e).datepicker({
            onSelect : function (ev) {
                // here your code
            }
        });
    }
}

Check out perlfaq4: How do I merge two hashes. There is a lot of good information already in the Perl documentation and you can have it right away rather than waiting for someone else to answer it. :)

Before you decide to merge two hashes, you have to decide what to do if both hashes contain keys that are the same and if you want to leave the original hashes as they were.

If you want to preserve the original hashes, copy one hash (%hash1) to a new hash (%new_hash), then add the keys from the other hash (%hash2 to the new hash. Checking that the key already exists in %new_hash gives you a chance to decide what to do with the duplicates:

my %new_hash = %hash1; # make a copy; leave %hash1 alone

foreach my $key2 ( keys %hash2 )
    {
    if( exists $new_hash{$key2} )
        {
        warn "Key [$key2] is in both hashes!";
        # handle the duplicate (perhaps only warning)
        ...
        next;
        }
    else
        {
        $new_hash{$key2} = $hash2{$key2};
        }
    }

If you don't want to create a new hash, you can still use this looping technique; just change the %new_hash to %hash1.

foreach my $key2 ( keys %hash2 )
    {
    if( exists $hash1{$key2} )
        {
        warn "Key [$key2] is in both hashes!";
        # handle the duplicate (perhaps only warning)
        ...
        next;
        }
    else
        {
        $hash1{$key2} = $hash2{$key2};
        }
    }

If you don't care that one hash overwrites keys and values from the other, you could just use a hash slice to add one hash to another. In this case, values from %hash2 replace values from %hash1 when they have keys in common:

@hash1{ keys %hash2 } = values %hash2;

You can use

<?php the_category(', '); ?>

which would output them in a comma separated list.

You can also do the same for tags as well:

<?php the_tags('<em>:</em>', ', ', ''); ?>

1. To convert and append an integer, use operator += (or member function concat):

   String stringOne = "A long integer: ";
   stringOne += 123456789;
   

2. To get the string as type char[], use toCharArray():

   char charBuf[50];
   stringOne.toCharArray(charBuf, 50)
   

In the example, there is only space for 49 characters (presuming it is terminated by null). You may want to make the size dynamic.

Overhead

The cost of bringing in String (it is not included if not used anywhere in the sketch), is approximately 1212 bytes program memory (flash) and 48 bytes RAM.

This was measured using Arduino IDE version 1.8.10 (2019-09-13) for an Arduino Leonardo sketch.

You can use offsets to make a column appear centered, just use an offset equal to half of the remaining size of the row, in your case I would suggest using col-lg-4 with col-lg-offset-4, that's (12-4)/2.

<div class="row">
    <div class="col-lg-4 col-lg-offset-4">
        <div class="input-group">
            <input type="text" class="form-control" /> 
            <span class="input-group-btn">
                <button class="btn btn-default" type="button">Go!</button>
            </span>
        </div><!-- /input-group -->
    </div><!-- /.col-lg-4 -->
</div><!-- /.row -->

Demo fiddle

Note that this technique only works for even column sizes (.col-X-2, .col-X-4, col-X-6, etc...), if you want to support any size you can use margin: 0 auto; but you need to remove the float from the element too, I recommend a custom CSS class like the following:

.col-centered{
    margin: 0 auto;
    float: none;
}

Demo fiddle

Try to put android:gravity="center_vertical|right" inside parent LinearLayout else as you are inside RelativeLayout you can put android:layout_centerInParent="true" inside your scrollView.

Use compareTo() function that's built into the class.

In my case, I had a textbox that was attached to a datepicker. The only solution that worked for me was to handle it inside the onSelect event of the datepicker.

<input type="text"  id="bookdate">

$("#bookdate").datepicker({            
     onSelect: function (selected) {
         //handle change event here
     }
});

We can read properties file in spring boot using 3 way

1. Read value from application.properties Using @Value

map key as

public class EmailService {

 @Value("${email.username}")
 private String username;

}

2. Read value from application.properties Using @ConfigurationProperties

In this we will map prefix of key using ConfigurationProperties and key name is same as field of class

  @Component
   @ConfigurationProperties("email")
    public class EmailConfig {

        private String   username;
    }

3. Read application.properties Using using Environment object

public class EmailController {

@Autowired
private Environment env;

@GetMapping("/sendmail")
public void sendMail(){     
    System.out.println("reading value from application properties file  using Environment ");
    System.out.println("username ="+ env.getProperty("email.username"));
    System.out.println("pwd ="+ env.getProperty("email.pwd"));
}

Reference : how to read value from application.properties in spring boot

Alternatively, you can give the "full location" to the database in your queries a la:

SELECT photo_id FROM [my database name].photogallery;

If using one more often than others, use USE. Even if you do, you can still use the database.table syntax.

8 years late. But I like:

import os
import requests

os.environ['HTTP_PROXY'] = os.environ['http_proxy'] = 'http://http-connect-proxy:3128/'
os.environ['HTTPS_PROXY'] = os.environ['https_proxy'] = 'http://http-connect-proxy:3128/'
os.environ['NO_PROXY'] = os.environ['no_proxy'] = '127.0.0.1,localhost,.local'

r = requests.get('https://example.com')  # , verify=False

Slightly altered version of Sven Marnach's solution..

import os

folder_location = 'C:\SomeFolderName'
file_list = create_file_list(folder_location)
def create_file_list(path):
return_list = []
for filenames in os.walk(path):
for file_list in filenames:
for file_name in file_list:
if file_name.endswith((".txt")):
return_list.append(file_name)
return return_list

You didn't say what version you were using, but in SQL 2005 and above, you can use a common table expression with the OVER Clause. It goes a little something like this:

WITH cte AS (
  SELECT[foo], [bar], 
     row_number() OVER(PARTITION BY foo, bar ORDER BY baz) AS [rn]
  FROM TABLE
)
DELETE cte WHERE [rn] > 1

Play around with it and see what you get.

(Edit: In an attempt to be helpful, someone edited the ORDER BY clause within the CTE. To be clear, you can order by anything you want here, it needn't be one of the columns returned by the cte. In fact, a common use-case here is that "foo, bar" are the group identifier and "baz" is some sort of time stamp. In order to keep the latest, you'd do ORDER BY baz desc)

Don't know if this has been solved yet but I was getting similar problems with Anaconda python 3.7.3 and Idle on Windows 10. Fixed it by adding:

<path>\Anaconda3
<path>\Anaconda3\scripts
<path>\Anaconda3\Library\bin

to the PATH variable.

I'll assume you want to check a string value. One nice way is the REGEXP operator, matching the string to a regular expression. Simply do

select field from table where field REGEXP '^-?[0-9]+$';

this is reasonably fast. If your field is numeric, just test for

ceil(field) = field

instead.

Bootstrap 4 (update 2019)

A multi-item carousel can be accomplished in several ways as explained here. Another option is to use separate thumbnails to navigate the carousel slides.

Bootstrap 3 (original answer)

This can be done using the grid inside each carousel item.

       <div id="myCarousel" class="carousel slide">
                <div class="carousel-inner">
                    <div class="item active">
                        <div class="row">
                            <div class="col-sm-3">..
                            </div>
                            <div class="col-sm-3">..
                            </div>
                            <div class="col-sm-3">..
                            </div>
                            <div class="col-sm-3">..
                            </div>
                        </div>
                        <!--/row-->
                    </div>
                    ...add more item(s)
                 </div>
        </div>

Demo example thumbnail slider using the carousel:
http://www.bootply.com/81478

Another example with carousel indicators as thumbnails: http://www.bootply.com/79859

1. Use the 'jet' colormap for a transition between blue and red.
2. Use pcolor() with the vmin, vmax parameters.

It is detailed in this answer: https://stackoverflow.com/a/3376734/21974

I am assuming the parent div has no width or a wide width, and the child div has a smaller width. The following will set the margin for the top and bottom to zero, and the sides to automatically fit. This centers the div.

div#child {
    margin: 0 auto;
}

use dataType: 'jsonp', works for me.

   async function get_ajax_data(){

       var _reprojected_lat_lng = await $.ajax({

                                type: 'GET',

                                dataType: 'jsonp',

                                data: {},

                                url: _reprojection_url,

                                error: function (jqXHR, textStatus, errorThrown) {

                                    console.log(jqXHR)

                                },

                                success: function (data) {

                                    console.log(data);



                                    // note: data is already json type, you just specify dataType: jsonp

                                    return data;

                                }

                            });





 } // function               

make input to block and float, Adjust margin top value.

HTML:

<div class="label">
<input type="checkbox" name="test" /> luke..
</div>

CSS:

/*
change margin-top, if your line-height is different.
*/
input[type=checkbox]{
height:18px;
width:18px;
padding:0;
margin-top:5px;
display:block;
float:left;
}
.label{
border:1px solid red;
}

Demo

If anyone finds their way here with the same problem I was having, my problem was that I was missing the <dependencyManagement> tags around dependencies I had copied from the child pom.

You can use mb_chars. This respects umlaute:

class String

  # Only capitalize first letter of a string
  def capitalize_first
    self[0] = self[0].mb_chars.upcase
    self
  end

end

Example:

"ümlaute".capitalize_first
#=> "Ümlaute"

Add double quote

$nameRegex = "chalmw-dm*"

-like "$nameregex" or -like "'$nameregex'"

Sometimes a simple "static Foo foo = new Foo();" is not enough. Just think of some basic data insertion you want to do.

On the other hand you would have to synchronize any method that instantiates the singleton variable as such. Synchronisation is not bad as such, but it can lead to performance issues or locking (in very very rare situations using this example. The solution is

public class Singleton {

    private static Singleton instance = null;

    static {
          instance = new Singleton();
          // do some of your instantiation stuff here
    }

    private Singleton() {
          if(instance!=null) {
                  throw new ErrorYouWant("Singleton double-instantiation, should never happen!");
          }
    }

    public static getSingleton() {
          return instance;
    }

}

Now what happens? The class is loaded via the class loader. Directly after the class was interpreted from a byte Array, the VM executes the static { } - block. that's the whole secret: The static-block is only called once, the time the given class (name) of the given package is loaded by this one class loader.

if you're receiving the error in parameter, so keep any or any[] type of input like below

getOptionLabel={(option: any) => option!.name}

 <Autocomplete
    options={tests}
    getOptionLabel={(option: any) => option!.name}
    ....
  />

There is no actual difference in both cases 'i' will be incremented by 1.

But there is a difference when you use it in an expression, for example:

int i = 1;
int a = ++i;
// i is incremented by one and then assigned to a.
// Both i and a are now 2.
int b = i++;
// i is assigned to b and then incremented by one.
// b is now 2, and i is now 3

I would suggest hinterland extension.

In other answers I couldn't find the method for how to install it from pip, so this is how you install it.

First, install jupyter contrib nbextensions by running

pip install jupyter_contrib_nbextensions

Next install js and css file for jupyter by running

jupyter contrib nbextension install --user

and at the end run,

jupyter nbextension enable hinterland/hinterland

The output of last command will be

Enabling notebook extension hinterland/hinterland...
      - Validating: OK

you can try

"str".charCodeAt(0)

i had same problem , try this :

void client_handler(Socket client) // set 'KeepAlive' true
{
    while (true)
    {
        try
        {
            if (client.Connected)
            {

            }
            else
            { // client disconnected
                break;
            }
        }
        catch (Exception)
        {
            client.Poll(4000, SelectMode.SelectRead);// try to get state
        }
    }
}

If you know what parameter you want to pass, take a Action<T> for the type. Example:

void LoopMethod (Action<int> code, int count) {
     for (int i = 0; i < count; i++) {
         code(i);
     }
}

If you want the parameter to be passed to your method, make the method generic:

void LoopMethod<T> (Action<T> code, int count, T paramater) {
     for (int i = 0; i < count; i++) {
         code(paramater);
     }
}

And the caller code:

Action<string> s = Console.WriteLine;
LoopMethod(s, 10, "Hello World");

Update. Your code should look like:

private void Include(IList<string> includes, Action<string> action)
{
    if (includes != null)
    {
         foreach (var include in includes)
             action(include);
    }
}

public void test()
{
    Action<string> dg = (s) => {
        _context.Cars.Include(s);
    };
    this.Include(includes, dg);
}

latest is really designed to work with date fields (it probably does work with other total-ordered types too, but not sure). And the only way you can use it without specifying the field name is by setting the get_latest_by meta attribute, as mentioned here.

Also, It can be done with LINQ

var str = "Hello@Hello&Hello(Hello)";
var characters = str.Select(c => char.IsLetter(c) ? c : ',')).ToArray();             
var output = new string(characters);
Console.WriteLine(output);

One that worked for me was:

.+(\\.+)$

Try it online!

Explanation:

.+     - any character except newline
(      - create a group
 \\.+   - match a backslash, and any characters after it
)      - end group
$      - this all has to happen at the end of the string

Try to run

npm i node-sass@latest

SELECT COUNT(1) from <table name>

should do the exact same thing as

SELECT COUNT(*)  from <table name>

There may have been or still be some reasons why it would perform better than SELECT COUNT(*)on some database, but I would consider that a bug in the DB.

SELECT COUNT(col_name) from <table name>

however has a different meaning, as it counts only the rows with a non-null value for the given column.

What happens if the size of array is unknown? Or array should be dynamically created and populated? Alternative solution which worked for me is to use class with static 2d array variable which in case of non-existence of index in array will initiate it:

function _a(x,y,val){
    // return depending on parameters
    switch(arguments.length){
        case 0: return _a.a;
        case 1: return _a.a[x];
        case 2: return _a.a[x][y];
    }

    // declare array if wasn't declared yet
    if(typeof _a.a[x] == 'undefined')
        _a.a[x] = [];

    _a.a[x][y] = val;
}
// declare static empty variable
_a.a = [];

The syntax will be:

_a(1,1,2); // populates [1][1] with value 2
_a(1,1);   // 2 or alternative syntax _a.a[1][1]
_a(1);     // [undefined × 1, 2]
_a.a;      // [undefined × 1, Array[2]]
_a.a.length

Multiple Folders in VS

Click ->File ->Add Folder to Workplace.

Step 1.

Choose which project to work ->Add(press)

Step 2.

My guess is that you don't really want to GROUP BY some_product.

The answer to: "Is there a way to GROUP BY a column alias such as some_product in this case, or do I need to put this in a subquery and group on that?" is: You can not GROUP BY a column alias.

The SELECT clause, where column aliases are assigned, is not processed until after the GROUP BY clause. An inline view or common table expression (CTE) could be used to make the results available for grouping.

Inline view:

select ...
from (select ... , CASE WHEN col1 > col2 THEN SUM(col3*col4) ELSE 0 END AS some_product
   from ...
   group by col1, col2 ... ) T
group by some_product ...

CTE:

with T as (select ... , CASE WHEN col1 > col2 THEN SUM(col3*col4) ELSE 0 END AS some_product
   from ...
   group by col1, col2 ... )
select ...
from T
group by some_product ... 

I thought I would add to this question as it is the top google search result.

As has been noted in the comments, in EF Core there is no support for using annotations (Key attribute) and it must be done with fluent.

As I was working on a large migration from EF6 to EF Core this was unsavoury and so I tried to hack it by using Reflection to look for the Key attribute and then apply it during OnModelCreating

// get all composite keys (entity decorated by more than 1 [Key] attribute
foreach (var entity in modelBuilder.Model.GetEntityTypes()
    .Where(t => 
        t.ClrType.GetProperties()
            .Count(p => p.CustomAttributes.Any(a => a.AttributeType == typeof(KeyAttribute))) > 1))
{
    // get the keys in the appropriate order
    var orderedKeys = entity.ClrType
        .GetProperties()
        .Where(p => p.CustomAttributes.Any(a => a.AttributeType == typeof(KeyAttribute)))
        .OrderBy(p => 
            p.CustomAttributes.Single(x => x.AttributeType == typeof(ColumnAttribute))?
                .NamedArguments?.Single(y => y.MemberName == nameof(ColumnAttribute.Order))
                .TypedValue.Value ?? 0)
        .Select(x => x.Name)
        .ToArray();

    // apply the keys to the model builder
    modelBuilder.Entity(entity.ClrType).HasKey(orderedKeys);
}

I haven't fully tested this in all situations, but it works in my basic tests. Hope this helps someone

In your example, the TMP variable is set (and the temporary directory created) whenever the rules for out.tar are evaluated. In order to create the directory only when out.tar is actually fired, you need to move the directory creation down into the steps:

out.tar : 
    $(eval TMP := $(shell mktemp -d))
    @echo hi $(TMP)/hi.txt
    tar -C $(TMP) cf $@ .
    rm -rf $(TMP)

The eval function evaluates a string as if it had been typed into the makefile manually. In this case, it sets the TMP variable to the result of the shell function call.

edit (in response to comments):

To create a unique variable, you could do the following:

out.tar : 
    $(eval $@_TMP := $(shell mktemp -d))
    @echo hi $($@_TMP)/hi.txt
    tar -C $($@_TMP) cf $@ .
    rm -rf $($@_TMP)

This would prepend the name of the target (out.tar, in this case) to the variable, producing a variable with the name out.tar_TMP. Hopefully, that is enough to prevent conflicts.

I think you might need to declare a view engine.

If you want to use a view/template engine:

app.set('view engine', 'ejs');

or

app.set('view engine', 'jade');

But to render plain-html, see this post: Render basic HTML view?.

You may have imported,

project/controllers/base

inside the

project/controllers/routes

You have already imported before. That's not supported.

I don't see anything immediately obvious as to what would cause a segmentation fault. My only suspicion is that your code expects to get a filename as a parameter when you run it, but if you don't pass it, it will attempt to reference one, anyway.

Accessing argv[1] when it doesn't exist would cause a segmentation fault. It's generally good practice to check the number of arguments before trying to reference them. You can do this by using the following function prototype for main(), and checking that argc is greater than 1 (simply, it will indicate the number entries in argv).

int main(int argc, char** argv)

The best way to figure out what causes a segfault in general is to use a debugger. If you're in Visual Studio, put a breakpoint at the top of your main function and then choose Run with debugging instead of "Run without debugging" when you start the program. It will stop execution at the top, and let you step line-by-line until you see a problem.

If you're in Linux, you can just grab the core file (it will have "core" in the name) and load that with gdb (GNU Debugger). It can give you a stack dump which will point you straight to the line that caused the segmentation fault to occur.

EDIT: I see you changed your question and code. So this answer probably isn't useful anymore, but I'll leave it as it's good advice anyway, and see if I can address the modified question, shortly).

You probably want to do something like this:

result = MsgBox ("Yes or No?", vbYesNo, "Yes No Example")

Select Case result
Case vbYes
    MsgBox("You chose Yes")
Case vbNo
    MsgBox("You chose No")
End Select

To add an icon:

result = MsgBox ("Yes or No?", vbYesNo + vbQuestion, "Yes No Example")

Other icon options:

vbCritical or vbExclamation

Like others, it was some unrelated code that was causing the @testable to malfunction.

In my test target there was an Objective-C header file that had

@import ModuleUnderTest;

I removed this line (because the import was actually unnecessary) and miraculously @testable starting working again.

I was only able to track this down but removing everything from my project and adding it back in bit by bit until it failed. Eventually I found the problem line of code.

I think these could be helpful for you .

Using a SELECT statement with a simple CASE expression

Within a SELECT statement, a simple CASE expression allows for only an equality check; no other comparisons are made. The following example uses the CASE expression to change the display of product line categories to make them more understandable.

USE AdventureWorks2012;
GO
SELECT   ProductNumber, Category =
      CASE ProductLine
         WHEN 'R' THEN 'Road'
         WHEN 'M' THEN 'Mountain'
         WHEN 'T' THEN 'Touring'
         WHEN 'S' THEN 'Other sale items'
         ELSE 'Not for sale'
      END,
   Name
FROM Production.Product
ORDER BY ProductNumber;
GO

Using a SELECT statement with a searched CASE expression

Within a SELECT statement, the searched CASE expression allows for values to be replaced in the result set based on comparison values. The following example displays the list price as a text comment based on the price range for a product.

USE AdventureWorks2012;
GO
SELECT   ProductNumber, Name, "Price Range" = 
      CASE 
         WHEN ListPrice =  0 THEN 'Mfg item - not for resale'
         WHEN ListPrice < 50 THEN 'Under $50'
         WHEN ListPrice >= 50 and ListPrice < 250 THEN 'Under $250'
         WHEN ListPrice >= 250 and ListPrice < 1000 THEN 'Under $1000'
         ELSE 'Over $1000'
      END
FROM Production.Product
ORDER BY ProductNumber ;
GO

Using CASE in an ORDER BY clause

The following examples uses the CASE expression in an ORDER BY clause to determine the sort order of the rows based on a given column value. In the first example, the value in the SalariedFlag column of the HumanResources.Employee table is evaluated. Employees that have the SalariedFlag set to 1 are returned in order by the BusinessEntityID in descending order. Employees that have the SalariedFlag set to 0 are returned in order by the BusinessEntityID in ascending order. In the second example, the result set is ordered by the column TerritoryName when the column CountryRegionName is equal to 'United States' and by CountryRegionName for all other rows.

SELECT BusinessEntityID, SalariedFlag
FROM HumanResources.Employee
ORDER BY CASE SalariedFlag WHEN 1 THEN BusinessEntityID END DESC
        ,CASE WHEN SalariedFlag = 0 THEN BusinessEntityID END;
GO


SELECT BusinessEntityID, LastName, TerritoryName, CountryRegionName
FROM Sales.vSalesPerson
WHERE TerritoryName IS NOT NULL
ORDER BY CASE CountryRegionName WHEN 'United States' THEN TerritoryName
         ELSE CountryRegionName END;

Using CASE in an UPDATE statement

The following example uses the CASE expression in an UPDATE statement to determine the value that is set for the column VacationHours for employees with SalariedFlag set to 0. When subtracting 10 hours from VacationHours results in a negative value, VacationHours is increased by 40 hours; otherwise, VacationHours is increased by 20 hours. The OUTPUT clause is used to display the before and after vacation values.

USE AdventureWorks2012;
GO
UPDATE HumanResources.Employee
SET VacationHours = 
    ( CASE
         WHEN ((VacationHours - 10.00) < 0) THEN VacationHours + 40
         ELSE (VacationHours + 20.00)
       END
    )
OUTPUT Deleted.BusinessEntityID, Deleted.VacationHours AS BeforeValue, 
       Inserted.VacationHours AS AfterValue
WHERE SalariedFlag = 0; 

Using CASE in a HAVING clause

The following example uses the CASE expression in a HAVING clause to restrict the rows returned by the SELECT statement. The statement returns the the maximum hourly rate for each job title in the HumanResources.Employee table. The HAVING clause restricts the titles to those that are held by men with a maximum pay rate greater than 40 dollars or women with a maximum pay rate greater than 42 dollars.

USE AdventureWorks2012;
GO
SELECT JobTitle, MAX(ph1.Rate)AS MaximumRate
FROM HumanResources.Employee AS e
JOIN HumanResources.EmployeePayHistory AS ph1 ON e.BusinessEntityID = ph1.BusinessEntityID
GROUP BY JobTitle
HAVING (MAX(CASE WHEN Gender = 'M' 
        THEN ph1.Rate 
        ELSE NULL END) > 40.00
     OR MAX(CASE WHEN Gender  = 'F' 
        THEN ph1.Rate  
        ELSE NULL END) > 42.00)
ORDER BY MaximumRate DESC;

For more details description of these example visit the source.

Also visit here and here for some examples with great details.

In HTML

<div style="overflow: hidden;">

in CSS

overflow: hidden;

you can also end scrolling for x or y separately

overflow-y: hidden; /* Hide vertical scrollbar */
  overflow-x: hidden; /* Hide horizontal scrollbar */

Adding the following line into the form worked for me:

<%= hidden_field_tag :authenticity_token, form_authenticity_token %>

I had a similar warning/error/failure when I was simply trying to make an executable from two different object files (main.o and add.o). I was using the command:

gcc -o exec main.o add.o

But my program is a C++ program. Using the g++ compiler solved my issue:

g++ -o exec main.o add.o

I was always under the impression that gcc could figure these things out on its own. Apparently not. I hope this helps someone else searching for this error.

Create 
trigger `[dbo].[mytrigger]` on `[dbo].[Patients]` after update , insert as
begin
     --Sql logic
     print 'Hello world'     
 end 

If the system Python is borked (i.e. the OS packages split distutils in a python-devel package) and you can’t ask a sysadmin to install the missing piece, then you’ll have to install your own Python. It requires some header files and a compiler toolchain. If you can’t have those, try compiling a Python on an identical computer and just copying it.

function getDomain(url, subdomain) {
    subdomain = subdomain || false;

    url = url.replace(/(https?:\/\/)?(www.)?/i, '');

    if (!subdomain) {
        url = url.split('.');

        url = url.slice(url.length - 2).join('.');
    }

    if (url.indexOf('/') !== -1) {
        return url.split('/')[0];
    }

    return url;
}

Examples

• getDomain('http://www.example.com'); // example.com
• getDomain('www.example.com'); // example.com
• getDomain('http://blog.example.com', true); // blog.example.com
• getDomain(location.href); // ..

Previous version was getting full domain (including subdomain). Now it determines the right domain depending on preference. So that when a 2nd argument is provided as true it will include the subdomain, otherwise it returns only the 'main domain'

I can second the previous posters enthusiasm for the Gideros Lua game engine, whilst focusing currently on Mobile (iOS and Android - Windows phone 8 is in the works), desktop support for Mac, PC (possibly Linux) is also planned for the not too distant future.

Google for "Gideros Mobile"

I tried several of the options posted in this article, but it worked for me using this option in eclipse.ini:

-Dorg.eclipse.swt.browser.DefaultType=mozilla

For instance your json looks like this : {"id":1,"content":"Hello, World!"}

You can access this thru angularjs like so:

angular.module('app', [])
    .controller('myApp', function($scope, $http) {
        $http.get('http://yourapp/api').
            then(function(response) {
                $scope.datafromapi = response.data;
            });
    });

Then on your html you would do it like this:

<!doctype html>
<html ng-app="myApp">
    <head>
        <title>Hello AngularJS</title>
        <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.3/angular.min.js"></script>
        <script src="hello.js"></script>
    </head>

    <body>
        <div ng-controller="myApp">
            <p>The ID is {{datafromapi.id}}</p>
            <p>The content is {{datafromapi.content}}</p>
        </div>
    </body>
</html>

This calls the CDN for angularjs in case you don't want to download them.

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.3/angular.min.js"></script>
<script src="hello.js"></script>

Hope this helps.

Often you need to put more into the manifest than what you get with the -e switch, and in that case, the syntax is:

jar -cvfm myJar.jar myManifest.txt myApp.class

Which reads: "create verbose jarFilename manifestFilename", followed by the files you want to include.

Note that the name of the manifest file you supply can be anything, as jar will automatically rename it and put it into the right place within the jar file.

in css write

a.menu_links:hover{ cursor:pointer}

Try mpstat from the sysstat package

> sudo apt-get install sysstat
Linux 3.0.0-13-generic (ws025)  02/10/2012  _x86_64_    (2 CPU)  

03:33:26 PM  CPU    %usr   %nice    %sys %iowait    %irq   %soft  %steal  %guest   %idle
03:33:26 PM  all    2.39    0.04    0.19    0.34    0.00    0.01    0.00    0.00   97.03

Then some cutor grepto parse the info you need:

mpstat | grep -A 5 "%idle" | tail -n 1 | awk -F " " '{print 100 -  $ 12}'a

I had an application that I needed to convert from a JPA entity to DTO, and I thought about it and finally came up using org.springframework.beans.BeanUtils.copyProperties for copying simple properties and also extending and using org.springframework.binding.convert.service.DefaultConversionService for converting complex properties.

In detail my service was something like this:

@Service("seedingConverterService")
public class SeedingConverterService extends DefaultConversionService implements ISeedingConverterService  {
    @PostConstruct
    public void init(){
        Converter<Feature,FeatureDTO> featureConverter = new Converter<Feature, FeatureDTO>() {

            @Override
            public FeatureDTO convert(Feature f) {
                FeatureDTO dto = new FeatureDTO();
                //BeanUtils.copyProperties(f, dto,"configurationModel");
                BeanUtils.copyProperties(f, dto);
                dto.setConfigurationModelId(f.getConfigurationModel()==null?null:f.getConfigurationModel().getId());
                return dto;
            }
        };

        Converter<ConfigurationModel,ConfigurationModelDTO> configurationModelConverter = new Converter<ConfigurationModel,ConfigurationModelDTO>() {
            @Override
            public ConfigurationModelDTO convert(ConfigurationModel c) {
                ConfigurationModelDTO dto = new ConfigurationModelDTO();
                //BeanUtils.copyProperties(c, dto, "features");
                BeanUtils.copyProperties(c, dto);
                dto.setAlgorithmId(c.getAlgorithm()==null?null:c.getAlgorithm().getId());
                List<FeatureDTO> l = c.getFeatures().stream().map(f->featureConverter.convert(f)).collect(Collectors.toList());
                dto.setFeatures(l);
                return dto;
            }
        };
        addConverter(featureConverter);
        addConverter(configurationModelConverter);
    }
}

You can't do this within the Python program, because the shell decides which version to use if you a shebang line.

If you aren't using a shell with a shebang line and just type python myprogram.py it uses the default version unless you decide specifically which Python version when you type pythonXXX myprogram.py which version to use.

Once your Python program is running you have already decided which Python executable to use to get the program running.

virtualenv is for segregating python versions and environments, it specifically exists to eliminate conflicts.

We need to cover at least these aspects to provide a comprehensive answer/comparison (in no particular order of importance): Speed, Memory usage, Syntax and Features.

My intent is to cover each one of these as clearly as possible from data.table perspective.

Note: unless explicitly mentioned otherwise, by referring to dplyr, we refer to dplyr's data.frame interface whose internals are in C++ using Rcpp.

The data.table syntax is consistent in its form - DT[i, j, by]. To keep i, j and by together is by design. By keeping related operations together, it allows to easily optimise operations for speed and more importantly memory usage, and also provide some powerful features, all while maintaining the consistency in syntax.

1. Speed

Quite a few benchmarks (though mostly on grouping operations) have been added to the question already showing data.table gets faster than dplyr as the number of groups and/or rows to group by increase, including benchmarks by Matt on grouping from 10 million to 2 billion rows (100GB in RAM) on 100 - 10 million groups and varying grouping columns, which also compares pandas. See also updated benchmarks, which include Spark and pydatatable as well.

On benchmarks, it would be great to cover these remaining aspects as well:

• Grouping operations involving a subset of rows - i.e., DT[x > val, sum(y), by = z] type operations.

• Benchmark other operations such as update and joins.

• Also benchmark memory footprint for each operation in addition to runtime.

2. Memory usage

1. Operations involving filter() or slice() in dplyr can be memory inefficient (on both data.frames and data.tables). See this post.

   Note that Hadley's comment talks about speed (that dplyr is plentiful fast for him), whereas the major concern here is memory.

2. data.table interface at the moment allows one to modify/update columns by reference (note that we don't need to re-assign the result back to a variable).

   # sub-assign by reference, updates 'y' in-place
   DT[x >= 1L, y := NA]
   

   But dplyr will never update by reference. The dplyr equivalent would be (note that the result needs to be re-assigned):

   # copies the entire 'y' column
   ans <- DF %>% mutate(y = replace(y, which(x >= 1L), NA))
   

   A concern for this is referential transparency. Updating a data.table object by reference, especially within a function may not be always desirable. But this is an incredibly useful feature: see this and this posts for interesting cases. And we want to keep it.

   Therefore we are working towards exporting shallow() function in data.table that will provide the user with both possibilities. For example, if it is desirable to not modify the input data.table within a function, one can then do:

   foo <- function(DT) {
       DT = shallow(DT)          ## shallow copy DT
       DT[, newcol := 1L]        ## does not affect the original DT 
       DT[x > 2L, newcol := 2L]  ## no need to copy (internally), as this column exists only in shallow copied DT
       DT[x > 2L, x := 3L]       ## have to copy (like base R / dplyr does always); otherwise original DT will 
                                 ## also get modified.
   }
   

   By not using shallow(), the old functionality is retained:

   bar <- function(DT) {
       DT[, newcol := 1L]        ## old behaviour, original DT gets updated by reference
       DT[x > 2L, x := 3L]       ## old behaviour, update column x in original DT.
   }
   

   By creating a shallow copy using shallow(), we understand that you don't want to modify the original object. We take care of everything internally to ensure that while also ensuring to copy columns you modify only when it is absolutely necessary. When implemented, this should settle the referential transparency issue altogether while providing the user with both possibilties.

   Also, once shallow() is exported dplyr's data.table interface should avoid almost all copies. So those who prefer dplyr's syntax can use it with data.tables.

   But it will still lack many features that data.table provides, including (sub)-assignment by reference.

3. Aggregate while joining:

   Suppose you have two data.tables as follows:

   DT1 = data.table(x=c(1,1,1,1,2,2,2,2), y=c("a", "a", "b", "b"), z=1:8, key=c("x", "y"))
   #    x y z
   # 1: 1 a 1
   # 2: 1 a 2
   # 3: 1 b 3
   # 4: 1 b 4
   # 5: 2 a 5
   # 6: 2 a 6
   # 7: 2 b 7
   # 8: 2 b 8
   DT2 = data.table(x=1:2, y=c("a", "b"), mul=4:3, key=c("x", "y"))
   #    x y mul
   # 1: 1 a   4
   # 2: 2 b   3
   

   And you would like to get sum(z) * mul for each row in DT2 while joining by columns x,y. We can either:

   • 1) aggregate DT1 to get sum(z), 2) perform a join and 3) multiply (or)

     # data.table way
     DT1[, .(z = sum(z)), keyby = .(x,y)][DT2][, z := z*mul][]
     
     # dplyr equivalent
     DF1 %>% group_by(x, y) %>% summarise(z = sum(z)) %>% 
         right_join(DF2) %>% mutate(z = z * mul)
     

   • 2) do it all in one go (using by = .EACHI feature):

     DT1[DT2, list(z=sum(z) * mul), by = .EACHI]
     

   What is the advantage?

   • We don't have to allocate memory for the intermediate result.

   • We don't have to group/hash twice (one for aggregation and other for joining).

   • And more importantly, the operation what we wanted to perform is clear by looking at j in (2).

   Check this post for a detailed explanation of by = .EACHI. No intermediate results are materialised, and the join+aggregate is performed all in one go.

   Have a look at this, this and this posts for real usage scenarios.

   In dplyr you would have to join and aggregate or aggregate first and then join, neither of which are as efficient, in terms of memory (which in turn translates to speed).

4. Update and joins:

   Consider the data.table code shown below:

   DT1[DT2, col := i.mul]
   

   adds/updates DT1's column col with mul from DT2 on those rows where DT2's key column matches DT1. I don't think there is an exact equivalent of this operation in dplyr, i.e., without avoiding a *_join operation, which would have to copy the entire DT1 just to add a new column to it, which is unnecessary.

   Check this post for a real usage scenario.

To summarise, it is important to realise that every bit of optimisation matters. As Grace Hopper would say, Mind your nanoseconds!

3. Syntax

Let's now look at syntax. Hadley commented here:

Data tables are extremely fast but I think their concision makes it harder to learn and code that uses it is harder to read after you have written it ...

I find this remark pointless because it is very subjective. What we can perhaps try is to contrast consistency in syntax. We will compare data.table and dplyr syntax side-by-side.

We will work with the dummy data shown below:

DT = data.table(x=1:10, y=11:20, z=rep(1:2, each=5))
DF = as.data.frame(DT)

1. Basic aggregation/update operations.

   # case (a)
   DT[, sum(y), by = z]                       ## data.table syntax
   DF %>% group_by(z) %>% summarise(sum(y)) ## dplyr syntax
   DT[, y := cumsum(y), by = z]
   ans <- DF %>% group_by(z) %>% mutate(y = cumsum(y))
   
   # case (b)
   DT[x > 2, sum(y), by = z]
   DF %>% filter(x>2) %>% group_by(z) %>% summarise(sum(y))
   DT[x > 2, y := cumsum(y), by = z]
   ans <- DF %>% group_by(z) %>% mutate(y = replace(y, which(x > 2), cumsum(y)))
   
   # case (c)
   DT[, if(any(x > 5L)) y[1L]-y[2L] else y[2L], by = z]
   DF %>% group_by(z) %>% summarise(if (any(x > 5L)) y[1L] - y[2L] else y[2L])
   DT[, if(any(x > 5L)) y[1L] - y[2L], by = z]
   DF %>% group_by(z) %>% filter(any(x > 5L)) %>% summarise(y[1L] - y[2L])
   

   • data.table syntax is compact and dplyr's quite verbose. Things are more or less equivalent in case (a).

   • In case (b), we had to use filter() in dplyr while summarising. But while updating, we had to move the logic inside mutate(). In data.table however, we express both operations with the same logic - operate on rows where x > 2, but in first case, get sum(y), whereas in the second case update those rows for y with its cumulative sum.

     This is what we mean when we say the DT[i, j, by] form is consistent.

   • Similarly in case (c), when we have if-else condition, we are able to express the logic "as-is" in both data.table and dplyr. However, if we would like to return just those rows where the if condition satisfies and skip otherwise, we cannot use summarise() directly (AFAICT). We have to filter() first and then summarise because summarise() always expects a single value.

     While it returns the same result, using filter() here makes the actual operation less obvious.

     It might very well be possible to use filter() in the first case as well (does not seem obvious to me), but my point is that we should not have to.

2. Aggregation / update on multiple columns

   # case (a)
   DT[, lapply(.SD, sum), by = z]                     ## data.table syntax
   DF %>% group_by(z) %>% summarise_each(funs(sum)) ## dplyr syntax
   DT[, (cols) := lapply(.SD, sum), by = z]
   ans <- DF %>% group_by(z) %>% mutate_each(funs(sum))
   
   # case (b)
   DT[, c(lapply(.SD, sum), lapply(.SD, mean)), by = z]
   DF %>% group_by(z) %>% summarise_each(funs(sum, mean))
   
   # case (c)
   DT[, c(.N, lapply(.SD, sum)), by = z]     
   DF %>% group_by(z) %>% summarise_each(funs(n(), mean))
   

   • In case (a), the codes are more or less equivalent. data.table uses familiar base function lapply(), whereas dplyr introduces *_each() along with a bunch of functions to funs().

   • data.table's := requires column names to be provided, whereas dplyr generates it automatically.

   • In case (b), dplyr's syntax is relatively straightforward. Improving aggregations/updates on multiple functions is on data.table's list.

   • In case (c) though, dplyr would return n() as many times as many columns, instead of just once. In data.table, all we need to do is to return a list in j. Each element of the list will become a column in the result. So, we can use, once again, the familiar base function c() to concatenate .N to a list which returns a list.

   Note: Once again, in data.table, all we need to do is return a list in j. Each element of the list will become a column in result. You can use c(), as.list(), lapply(), list() etc... base functions to accomplish this, without having to learn any new functions.

   You will need to learn just the special variables - .N and .SD at least. The equivalent in dplyr are n() and .

3. Joins

   dplyr provides separate functions for each type of join where as data.table allows joins using the same syntax DT[i, j, by] (and with reason). It also provides an equivalent merge.data.table() function as an alternative.

   setkey(DT1, x, y)
   
   # 1. normal join
   DT1[DT2]            ## data.table syntax
   left_join(DT2, DT1) ## dplyr syntax
   
   # 2. select columns while join    
   DT1[DT2, .(z, i.mul)]
   left_join(select(DT2, x, y, mul), select(DT1, x, y, z))
   
   # 3. aggregate while join
   DT1[DT2, .(sum(z) * i.mul), by = .EACHI]
   DF1 %>% group_by(x, y) %>% summarise(z = sum(z)) %>% 
       inner_join(DF2) %>% mutate(z = z*mul) %>% select(-mul)
   
   # 4. update while join
   DT1[DT2, z := cumsum(z) * i.mul, by = .EACHI]
   ??
   
   # 5. rolling join
   DT1[DT2, roll = -Inf]
   ??
   
   # 6. other arguments to control output
   DT1[DT2, mult = "first"]
   ??
   

   • Some might find a separate function for each joins much nicer (left, right, inner, anti, semi etc), whereas as others might like data.table's DT[i, j, by], or merge() which is similar to base R.

   • However dplyr joins do just that. Nothing more. Nothing less.

   • data.tables can select columns while joining (2), and in dplyr you will need to select() first on both data.frames before to join as shown above. Otherwise you would materialiase the join with unnecessary columns only to remove them later and that is inefficient.

   • data.tables can aggregate while joining (3) and also update while joining (4), using by = .EACHI feature. Why materialse the entire join result to add/update just a few columns?

   • data.table is capable of rolling joins (5) - roll forward, LOCF, roll backward, NOCB, nearest.

   • data.table also has mult = argument which selects first, last or all matches (6).

   • data.table has allow.cartesian = TRUE argument to protect from accidental invalid joins.

Once again, the syntax is consistent with DT[i, j, by] with additional arguments allowing for controlling the output further.

4. do()...

   dplyr's summarise is specially designed for functions that return a single value. If your function returns multiple/unequal values, you will have to resort to do(). You have to know beforehand about all your functions return value.

   DT[, list(x[1], y[1]), by = z]                 ## data.table syntax
   DF %>% group_by(z) %>% summarise(x[1], y[1]) ## dplyr syntax
   DT[, list(x[1:2], y[1]), by = z]
   DF %>% group_by(z) %>% do(data.frame(.$x[1:2], .$y[1]))
   
   DT[, quantile(x, 0.25), by = z]
   DF %>% group_by(z) %>% summarise(quantile(x, 0.25))
   DT[, quantile(x, c(0.25, 0.75)), by = z]
   DF %>% group_by(z) %>% do(data.frame(quantile(.$x, c(0.25, 0.75))))
   
   DT[, as.list(summary(x)), by = z]
   DF %>% group_by(z) %>% do(data.frame(as.list(summary(.$x))))
   

   • .SD's equivalent is .

   • In data.table, you can throw pretty much anything in j - the only thing to remember is for it to return a list so that each element of the list gets converted to a column.

   • In dplyr, cannot do that. Have to resort to do() depending on how sure you are as to whether your function would always return a single value. And it is quite slow.

Once again, data.table's syntax is consistent with DT[i, j, by]. We can just keep throwing expressions in j without having to worry about these things.

Have a look at this SO question and this one. I wonder if it would be possible to express the answer as straightforward using dplyr's syntax...

To summarise, I have particularly highlighted several instances where dplyr's syntax is either inefficient, limited or fails to make operations straightforward. This is particularly because data.table gets quite a bit of backlash about "harder to read/learn" syntax (like the one pasted/linked above). Most posts that cover dplyr talk about most straightforward operations. And that is great. But it is important to realise its syntax and feature limitations as well, and I am yet to see a post on it.

data.table has its quirks as well (some of which I have pointed out that we are attempting to fix). We are also attempting to improve data.table's joins as I have highlighted here.

But one should also consider the number of features that dplyr lacks in comparison to data.table.

4. Features

I have pointed out most of the features here and also in this post. In addition:

• fread - fast file reader has been available for a long time now.

• fwrite - a parallelised fast file writer is now available. See this post for a detailed explanation on the implementation and #1664 for keeping track of further developments.

• Automatic indexing - another handy feature to optimise base R syntax as is, internally.

• Ad-hoc grouping: dplyr automatically sorts the results by grouping variables during summarise(), which may not be always desirable.

• Numerous advantages in data.table joins (for speed / memory efficiency and syntax) mentioned above.

• Non-equi joins: Allows joins using other operators <=, <, >, >= along with all other advantages of data.table joins.

• Overlapping range joins was implemented in data.table recently. Check this post for an overview with benchmarks.

• setorder() function in data.table that allows really fast reordering of data.tables by reference.

• dplyr provides interface to databases using the same syntax, which data.table does not at the moment.

• data.table provides faster equivalents of set operations (written by Jan Gorecki) - fsetdiff, fintersect, funion and fsetequal with additional all argument (as in SQL).

• data.table loads cleanly with no masking warnings and has a mechanism described here for [.data.frame compatibility when passed to any R package. dplyr changes base functions filter, lag and [ which can cause problems; e.g. here and here.

Finally:

• On databases - there is no reason why data.table cannot provide similar interface, but this is not a priority now. It might get bumped up if users would very much like that feature.. not sure.

• On parallelism - Everything is difficult, until someone goes ahead and does it. Of course it will take effort (being thread safe).

  • Progress is being made currently (in v1.9.7 devel) towards parallelising known time consuming parts for incremental performance gains using OpenMP.

Try to make the bounds's size integer.

#include <math.h>
....

    if (ratio > 1) {
        bounds.size.width = resolution;
        bounds.size.height = round(bounds.size.width / ratio);
    } else {
        bounds.size.height = resolution;
        bounds.size.width = round(bounds.size.height * ratio);
    }

You can't, this is determined by the browser, for the user's safety and security. For example you can't make it say "Virus detected" with a message of "Would you like to quarantine it now?"...at least not as an alert().

There are plenty of JavaScript Modal Dialogs out there though, that are far more customizable than alert().

Android now supports adding a Space view between views. It's available from 4.0 ICS onwards.

This worked for me

setInterval(ajax_query, 10000);

function ajax_query(){
   //Call ajax here
}

Using brew

I installed it using brew.

$ brew install go

When it was done if you run this brew command it'll show the following info:

$ brew info go
go: stable 1.4.2 (bottled), HEAD
Go programming environment
https://golang.org
/usr/local/Cellar/go/1.4.2 (4676 files, 158M) *
  Poured from bottle
From: https://github.com/Homebrew/homebrew/blob/master/Library/Formula/go.rb
==> Options
--with-cc-all
    Build with cross-compilers and runtime support for all supported platforms
--with-cc-common
    Build with cross-compilers and runtime support for darwin, linux and windows
--without-cgo
    Build without cgo
--without-godoc
    godoc will not be installed for you
--without-vet
    vet will not be installed for you
--HEAD
    Install HEAD version
==> Caveats
As of go 1.2, a valid GOPATH is required to use the `go get` command:
  https://golang.org/doc/code.html#GOPATH

You may wish to add the GOROOT-based install location to your PATH:
  export PATH=$PATH:/usr/local/opt/go/libexec/bin

The important pieces there are these lines:

/usr/local/Cellar/go/1.4.2 (4676 files, 158M) *

export PATH=$PATH:/usr/local/opt/go/libexec/bin

Setting up GO's environment

That shows where GO was installed. We need to do the following to setup GO's environment:

$ export PATH=$PATH:/usr/local/opt/go/libexec/bin
$ export GOPATH=/usr/local/opt/go/bin

You can then check using GO to see if it's configured properly:

$ go env
GOARCH="amd64"
GOBIN=""
GOCHAR="6"
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GOOS="darwin"
GOPATH="/usr/local/opt/go/bin"
GORACE=""
GOROOT="/usr/local/Cellar/go/1.4.2/libexec"
GOTOOLDIR="/usr/local/Cellar/go/1.4.2/libexec/pkg/tool/darwin_amd64"
CC="clang"
GOGCCFLAGS="-fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fno-common"
CXX="clang++"
CGO_ENABLED="1"

Setting up json2csv

Looks good, so lets install json2csv:

$ go get github.com/jehiah/json2csv
$

What just happened? It installed it. You can check like this:

$ $ ls -l $GOPATH/bin
total 5248
-rwxr-xr-x  1 sammingolelli  staff  2686320 Jun  9 12:28 json2csv

OK, so why can't I type json2csv in my shell? That's because the /bin directory under $GOPATH isn't on your $PATH.

$ type -f json2csv
-bash: type: json2csv: not found

So let's temporarily add it:

$ export PATH=$GOPATH/bin:$PATH

And re-check:

$ type -f json2csv
json2csv is hashed (/usr/local/opt/go/bin/bin/json2csv)

Now it's there:

$ json2csv --help
Usage of json2csv:
  -d=",": delimiter used for output values
  -i="": /path/to/input.json (optional; default is stdin)
  -k=[]: fields to output
  -o="": /path/to/output.json (optional; default is stdout)
  -p=false: prints header to output
  -v=false: verbose output (to stderr)
  -version=false: print version string

Add the modifications we've made to $PATH and $GOPATH to your $HOME/.bash_profile to make them persist between reboots.

The DATEADD() function adds or subtracts a specified time interval from a date.

DATEADD(datepart,number,date)

datepart(interval) can be hour, second, day, year, quarter, week etc; number (increment int); date(expression smalldatetime)

For example if you want to add 30 days to current date you can use something like this

 select dateadd(dd, 30, getdate())

To Substract 30 days from current date

select dateadd(dd, -30, getdate())

Since the most helpful answer didn't address the if exists portion, I thought I'd give one take on it via a quick-and-dirty solution. It relies on PowerShell being in the path environment variable which is likely what you want. (Hat tip to the top answer as I didn't know that.) Paste this into a text file and name it

Test Powershell Version.cmd

or similar.

@echo off
echo Checking powershell version...
del "%temp%\PSVers.txt" 2>nul
powershell -command "[string]$PSVersionTable.PSVersion.Major +'.'+ [string]$PSVersionTable.PSVersion.Minor | Out-File ([string](cat env:\temp) + '\PSVers.txt')" 2>nul
if errorlevel 1 (
 echo Powershell is not installed. Please install it from download.Microsoft.com; thanks.
) else (
 echo You have installed Powershell version:
 type "%temp%\PSVers.txt"
 del "%temp%\PSVers.txt" 2>nul
)
timeout 15

Anytime you're changing the headers of an HttpWebRequest, you need to use the appropriate properties on the object itself, if they exist. If you have a plain WebRequest, be sure to cast it to an HttpWebRequest first. Then Referrer in your case can be accessed via ((HttpWebRequest)request).Referrer, so you don't need to modify the header directly - just set the property to the right value. ContentLength, ContentType, UserAgent, etc, all need to be set this way.

IMHO, this is a shortcoming on MS part...setting the headers via Headers.Add() should automatically call the appropriate property behind the scenes, if that's what they want to do.

Put sleep. It will work. I have tried. The reason is that the page wasn't loaded yet. Check this question to know how to wait for load - Wait for page load in Selenium

Finding of week number for each date of a month (considering Monday as beginning of the week)

Keep the first date of month contant $B$13

=WEEKNUM(B18,2)-WEEKNUM($B$13,2)+1

WEEKNUM(B18,2) - returns the week number of the date mentioned in cell B18

WEEKNUM($B$13,2) - returns the week number of the 1st date of month in cell B13

System.out.println("Managers choice this week" + anyItem + "our recommendation to you");

You havent the variable anyItem initialized or even declared.

This code: + anyItem +

means get value of toString method of Object anyItem

The second thing why this wont work. You have System.out.print after return statement. Program could never reach tha line.

You probably want something like:

public Item anyItem() {
    int index = randomGenerator.nextInt(catalogue.size());
    System.out.println("Managers choice this week" + catalogue.get(index) + "our recommendation to you");
    return catalogue.get(index);

}

btw: in Java its convetion to place the curly parenthesis on the same line as the declaration of the function.

ECMAScript 6 has 'generators' which allow you to easily program in an asynchronous style.

function* myGenerator() {
    const callback = yield;
    let [response] = yield $.ajax("https://stackoverflow.com", {complete: callback});
    console.log("response is:", response);

    // examples of other things you can do
    yield setTimeout(callback, 1000);
    console.log("it delayed for 1000ms");
    while (response.statusText === "error") {
        [response] = yield* anotherGenerator();
    }
}

To run the above code you do this:

const gen = myGenerator(); // Create generator
gen.next(); // Start it
gen.next((...args) => gen.next([...args])); // Set its callback function

If you need to target browsers that don't support ES6 you can run the code through Babel or closure-compiler to generate ECMAScript 5.

The callback ...args are wrapped in an array and destructured when you read them so that the pattern can cope with callbacks that have multiple arguments. For example with node fs:

const [err, data] = yield fs.readFile(filePath, "utf-8", callback);

Livelock

A thread often acts in response to the action of another thread. If the other thread's action is also a response to the action of another thread, then livelock may result.

As with deadlock, livelocked threads are unable to make further progress. However, the threads are not blocked — they are simply too busy responding to each other to resume work. This is comparable to two people attempting to pass each other in a corridor: Alphonse moves to his left to let Gaston pass, while Gaston moves to his right to let Alphonse pass. Seeing that they are still blocking each other, Alphonse moves to his right, while Gaston moves to his left. They're still blocking each other, and so on...

The main difference between livelock and deadlock is that threads are not going to be blocked, instead they will try to respond to each other continuously.

In this image, both circles (threads or processes) will try to give space to the other by moving left and right. But they can't move any further.

Easiest is to use strftime (docs).

If it's for use on the view side, better to wrap it in a helper, though.

Note that the "if ($str)" and "IsNullOrEmpty" tests don't work comparably in all instances: an assignment of $str=0 produces false for both, and depending on intended program semantics, this could yield a surprise.

BEGIN TRANSACTION;

DECLARE @tblMapping table(sourceid int, destid int)

INSERT INTO [table1] ([data]) 
OUTPUT source.id, new.id
Select [data] from [external_table] source;

INSERT INTO [table2] ([table1_id], [data])
Select map.destid, source.[more data] 
from [external_table] source
    inner join @tblMapping map on source.id=map.sourceid;

COMMIT TRANSACTION;