Programs & Examples On #Email validation

To match pattern or an empty string, use

^$|pattern

Explanation

• ^ and $ are the beginning and end of the string anchors respectively.
• | is used to denote alternates, e.g. this|that.

References

• regular-expressions.info/Anchors and Alternation

On \b

\b in most flavor is a "word boundary" anchor. It is a zero-width match, i.e. an empty string, but it only matches those strings at very specific places, namely at the boundaries of a word.

That is, \b is located:

• Between consecutive \w and \W (either order):
  • i.e. between a word character and a non-word character
• Between ^ and \w
  • i.e. at the beginning of the string if it starts with \w
• Between \w and $
  • i.e. at the end of the string if it ends with \w

References

• regular-expressions.info/Word Boundaries

On using regex to match e-mail addresses

This is not trivial depending on specification.

Related questions

• What is the best regular expression for validating email addresses?
• Regexp recognition of email address hard?
• How far should one take e-mail address validation?

You can use the filter_var() function, which gives you a lot of handy validation and sanitization options.

filter_var($email, FILTER_VALIDATE_EMAIL)

• PHP Manual filter_var()

• Available in PHP >= 5.2.0

If you don't want to change your code that relied on your function, just do:

function isValidEmail($email){ 
    return filter_var($email, FILTER_VALIDATE_EMAIL) !== false;
}

Note: For other uses (where you need Regex), the deprecated ereg function family (POSIX Regex Functions) should be replaced by the preg family (PCRE Regex Functions). There are a small amount of differences, reading the Manual should suffice.

Update 1: As pointed out by @binaryLV:

PHP 5.3.3 and 5.2.14 had a bug related to FILTER_VALIDATE_EMAIL, which resulted in segfault when validating large values. Simple and safe workaround for this is using strlen() before filter_var(). I'm not sure about 5.3.4 final, but it is written that some 5.3.4-snapshot versions also were affected.

This bug has already been fixed.

Update 2: This method will of course validate bazmega@kapa as a valid email address, because in fact it is a valid email address. But most of the time on the Internet, you also want the email address to have a TLD: [email protected]. As suggested in this blog post (link posted by @Istiaque Ahmed), you can augment filter_var() with a regex that will check for the existence of a dot in the domain part (will not check for a valid TLD though):

function isValidEmail($email) {
    return filter_var($email, FILTER_VALIDATE_EMAIL) 
        && preg_match('/@.+\./', $email);
}

As @Eliseo Ocampos pointed out, this problem only exists before PHP 5.3, in that version they changed the regex and now it does this check, so you do not have to.

It is surprising the question of validating an email address continually comes up on SO!

You can find one often-mentioned practical solution here: How to Find or Validate an Email Address.

Excerpt:

The virtue of my regular expression above is that it matches 99% of the email addresses in use today. All the email address it matches can be handled by 99% of all email software out there. If you're looking for a quick solution, you only need to read the next paragraph. If you want to know all the trade-offs and get plenty of alternatives to choose from, read on.

See this answer on SO for a discussion of the merits of the article at the above link. In particular, the comment dated 2012-04-17 reads:

To all the complainers: after 3 hours experimenting all the solutions offered in this gigantic discussion, this is THE ONLY good java regex solution I can find. None of the rfc5322 stuff works on java regex.

The Python standard library comes with an e-mail parsing function: email.utils.parseaddr().

It returns a two-tuple containing the real name and the actual address parts of the e-mail:

>>> from email.utils import parseaddr
>>> parseaddr('[email protected]')
('', '[email protected]')

>>> parseaddr('Full Name <[email protected]>')
('Full Name', '[email protected]')

>>> parseaddr('"Full Name with quotes and <[email protected]>" <[email protected]>')
('Full Name with quotes and <[email protected]>', '[email protected]')

And if the parsing is unsuccessful, it returns a two-tuple of empty strings:

>>> parseaddr('[invalid!email]')
('', '')

An issue with this parser is that it's accepting of anything that is considered as a valid e-mail address for RFC-822 and friends, including many things that are clearly not addressable on the wide Internet:

>>> parseaddr('invalid@example,com') # notice the comma
('', 'invalid@example')

>>> parseaddr('invalid-email')
('', 'invalid-email')

So, as @TokenMacGuy put it, the only definitive way of checking an e-mail address is to send an e-mail to the expected address and wait for the user to act on the information inside the message.

However, you might want to check for, at least, the presence of an @-sign on the second tuple element, as @bvukelic suggests:

>>> '@' in parseaddr("invalid-email")[1]
False

If you want to go a step further, you can install the dnspython project and resolve the mail servers for the e-mail domain (the part after the '@'), only trying to send an e-mail if there are actual MX servers:

>>> from dns.resolver import query
>>> domain = 'foo@[email protected]'.rsplit('@', 1)[-1]
>>> bool(query(domain, 'MX'))
True
>>> query('example.com', 'MX')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  [...]
dns.resolver.NoAnswer
>>> query('not-a-domain', 'MX')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  [...]
dns.resolver.NXDOMAIN

You can catch both NoAnswer and NXDOMAIN by catching dns.exception.DNSException.

And Yes, foo@[email protected] is a syntactically valid address. Only the last @ should be considered for detecting where the domain part starts.

to validate the email string you will need to write a regular expression to check it is in the correct form. there are plenty out on the web but be carefull as some can exclude what are actually legal addresses.

essentially it will look something like this

^((?>[a-zA-Z\d!#$%&'*+\-/=?^_`{|}~]+\x20*|"((?=[\x01-\x7f])[^"\\]|\\[\x01-\x7f])*"\x20*)*(?<angle><))?((?!\.)(?>\.?[a-zA-Z\d!#$%&'*+\-/=?^_`{|}~]+)+|"((?=[\x01-\x7f])[^"\\]|\\[\x01-\x7f])*")@(((?!-)[a-zA-Z\d\-]+(?<!-)\.)+[a-zA-Z]{2,}|\[(((?(?<!\[)\.)(25[0-5]|2[0-4]\d|[01]?\d?\d)){4}|[a-zA-Z\d\-]*[a-zA-Z\d]:((?=[\x01-\x7f])[^\\\[\]]|\\[\x01-\x7f])+)\])(?(angle)>)$

Actually checking if the email exists and doesn't bounce would mean sending an email and seeing what the result was. i.e. it bounced or it didn't. However it might not bounce for several hours or not at all and still not be a "real" email address. There are a number of services out there which purport to do this for you and would probably be paid for by you and quite frankly why bother to see if it is real?

It is good to check the user has not misspelt their email else they could enter it incorrectly, not realise it and then get hacked of with you for not replying. However if someone wants to add a bum email address there would be nothing to stop them creating it on hotmail or yahoo (or many other places) to gain the same end.

So do the regular expression and validate the structure but forget about validating against a service.

Yes, according to RFC 3696 apostrophes are valid as long as they come before the @ symbol.

Use this method for validating your email format. Pass email as string , it returns true if format is correct otherwise false.

/**
 * validate your email address format. [email protected]
 */
public boolean emailValidator(String email) 
{
    Pattern pattern;
    Matcher matcher;
    final String EMAIL_PATTERN = "^[_A-Za-z0-9-]+(\\.[_A-Za-z0-9-]+)*@[A-Za-z0-9]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$";
    pattern = Pattern.compile(EMAIL_PATTERN);
    matcher = pattern.matcher(email);
    return matcher.matches();
}

The most elegant way is to use .Net's built in methods.

These methods:

• Are tried and tested. These methods are used in my own professional projects.

• Use regular expressions internally, which are reliable and fast.

• Made by Microsoft for C#. There's no need to reinvent the wheel.

• Return a bool result. True means the email is valid.

For users of .Net 4.5 and greater

Add this Reference to your project:

System.ComponentModel.DataAnnotations

Now you can use the following code:

(new EmailAddressAttribute().IsValid("[email protected]"));

Example of use

Here are some methods to declare:

protected List<string> GetRecipients() // Gets recipients from TextBox named `TxtRecipients`
{
    List<string> MethodResult = null;

    try
    {
        List<string> Recipients = TxtRecipients.Text.Replace(",",";").Replace(" ", "").Split(';').ToList();

        List<string> RecipientsCleaned = new List<string>();

        foreach (string Recipient in RecipientsCleaned)
        {
            if (!String.IsNullOrWhiteSpace(Recipient))
            {
                RecipientsNoBlanks.Add(Recipient);

            }

        }

        MethodResult = RecipientsNoBlanks;

    }
    catch//(Exception ex)
    {
        //ex.HandleException();
    }

    return MethodResult;

}


public static bool IsValidEmailAddresses(List<string> recipients)
{
    List<string> InvalidAddresses = GetInvalidEmailAddresses(recipients);

    return InvalidAddresses != null && InvalidAddresses.Count == 0;

}

public static List<string> GetInvalidEmailAddresses(List<string> recipients)
{
    List<string> MethodResult = null;

    try
    {
        List<string> InvalidEmailAddresses = new List<string>();

        foreach (string Recipient in recipients)
        {
            if (!(new EmailAddressAttribute().IsValid(Recipient)) && !InvalidEmailAddresses.Contains(Recipient))
            {
                InvalidEmailAddresses.Add(Recipient);

            }

        }

        MethodResult = InvalidEmailAddresses;

    }
    catch//(Exception ex)
    {
        //ex.HandleException();

    }

    return MethodResult;

}

...and code demonstrating them in action:

List<string> Recipients = GetRecipients();

bool IsValidEmailAddresses = IsValidEmailAddresses(Recipients);

if (IsValidEmailAddresses)
{
    //Emails are valid. Your code here

}
else
{
    StringBuilder sb = new StringBuilder();

    sb.Append("The following addresses are invalid:");

    List<string> InvalidEmails = GetInvalidEmailAddresses(Recipients);

    foreach (string InvalidEmail in InvalidEmails)
    {
        sb.Append("\n" + InvalidEmail);

    }

    MessageBox.Show(sb.ToString());

}

In addition, this example:

• Extends beyond the spec since a single string is used to contain 0, one or many email addresses sperated by a semi-colon ;.
• Clearly demonstrates how to use the IsValid method of the EmailAddressAttribute object.

Alternative, for users of a version of .Net less than 4.5

For situations where .Net 4.5 is not available, I use the following solution:

Specifically, I use:

public static bool IsValidEmailAddress(string emailAddress)
{
    bool MethodResult = false;

    try
    {
        MailAddress m = new MailAddress(emailAddress);

        MethodResult = m.Address == emailAddress;

    }
    catch //(Exception ex)
    {
        //ex.HandleException();

    }

    return MethodResult;

}

public static List<string> GetInvalidEmailAddresses(List<string> recipients)
{
    List<string> MethodResult = null;

    try
    {
        List<string> InvalidEmailAddresses = new List<string>();

        foreach (string Recipient in recipients)
        {
            if (!IsValidEmail(Recipient) && !InvalidEmailAddresses.Contains(Recipient))
            {
                InvalidEmailAddresses.Add(Recipient);

            }

        }

        MethodResult = InvalidEmailAddresses;

    }
    catch //(Exception ex)
    {
        //ex.HandleException();

    }

    return MethodResult;

}

Next pattern is used in K-9 mail:

public static final Pattern EMAIL_ADDRESS_PATTERN = Pattern.compile(
          "[a-zA-Z0-9\\+\\.\\_\\%\\-\\+]{1,256}" +
          "\\@" +
          "[a-zA-Z0-9][a-zA-Z0-9\\-]{0,64}" +
          "(" +
          "\\." +
          "[a-zA-Z0-9][a-zA-Z0-9\\-]{0,25}" +
          ")+"
      );

You can use function

private boolean checkEmail(String email) {
        return EMAIL_ADDRESS_PATTERN.matcher(email).matches();
}

A simple method

    private boolean isValidEmail(String email)
{
    String emailRegex ="^[_A-Za-z0-9-\\+]+(\\.[_A-Za-z0-9-]+)*@[A-Za-z0-9-]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$";
    if(email.matches(emailRegex))
    {
        return true;
    }
    return false;
}

I can confirm Joseph's and Drew's answers to use RCTP TO: <address_to_check>. I would like to add some little addenda on top of those answers.

Catch-all providers

Some mail providers implement a catch-all policy, meaning that *@mydomain.com will return positive to the RCTP TO: command. But this doesn't necessarily mean that the mailbox "exists", as in "belongs to a human". Nothing much can be done here, just be aware.

IP Greylisting/Blacklisting

Greylisting: 1st connection from unknown IP is blocked. Solution: retry at least 2 times.

Blacklisting: if you send too many requests from the same IP, this IP is blocked. Solution: use IP rotation; Reacher uses Tor.

HTTP requests on sign-up forms

This is very provider-specific, but you sometimes can use well-crafted HTTP requests, and parse the responses of these requests to see if a username already signed up or not with this provider.

Here is the relevant function from an open-source library I wrote to check *@yahoo.com addresses using HTTP requests: check-if-email-exists. I know my code is Rust and this thread is tagged PHP, but the same ideas apply.

Full Inbox

This might be an edge case, but when the user has a full inbox, RCTP TO: will return a 5.1.1 DSN error message saying it's full. This means that the account actually exists!

Disclosure

I run Reacher, a real-time email verification API. My code is written in Rust, and is 100% open-source. Check it out if you want a more robust solution:

Github: https://github.com/amaurymartiny/check-if-email-exists

With a combination of various techniques to jump through hoops, I manage to verify around 80% of the emails my customers check.

The easiest and safest way to check whether an email address is well-formed is to use the filter_var() function:

if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
    // invalid emailaddress
}

Additionally you can check whether the domain defines an MX record:

if (!checkdnsrr($domain, 'MX')) {
    // domain is not valid
}

But this still doesn't guarantee that the mail exists. The only way to find that out is by sending a confirmation mail.

Now that you have your easy answer feel free to read on about email address validation if you care to learn or otherwise just use the fast answer and move on. No hard feelings.

Trying to validate an email address using a regex is an "impossible" task. I would go as far as to say that that regex you have made is useless. There are three rfc's regarding emailaddresses and writing a regex to catch wrong emailadresses and at the same time don't have false positives is something no mortal can do. Check out this list for tests (both failed and succeeded) of the regex used by PHP's filter_var() function.

Even the built-in PHP functions, email clients or servers don't get it right. Still in most cases filter_var is the best option.

If you want to know which regex pattern PHP (currently) uses to validate email addresses see the PHP source.

If you want to learn more about email addresses I suggest you to start reading the specs, but I have to warn you it is not an easy read by any stretch:

• rfc5322
• rfc5321
• rfc3696
• rfc6531 (allows unicode characters, although many clients / servers don't accept it)

Note that filter_var() is as already stated only available as of PHP 5.2. In case you want it to work with earlier versions of PHP you could use the regex used in PHP:

<?php

$pattern = '/^(?!(?:(?:\\x22?\\x5C[\\x00-\\x7E]\\x22?)|(?:\\x22?[^\\x5C\\x22]\\x22?)){255,})(?!(?:(?:\\x22?\\x5C[\\x00-\\x7E]\\x22?)|(?:\\x22?[^\\x5C\\x22]\\x22?)){65,}@)(?:(?:[\\x21\\x23-\\x27\\x2A\\x2B\\x2D\\x2F-\\x39\\x3D\\x3F\\x5E-\\x7E]+)|(?:\\x22(?:[\\x01-\\x08\\x0B\\x0C\\x0E-\\x1F\\x21\\x23-\\x5B\\x5D-\\x7F]|(?:\\x5C[\\x00-\\x7F]))*\\x22))(?:\\.(?:(?:[\\x21\\x23-\\x27\\x2A\\x2B\\x2D\\x2F-\\x39\\x3D\\x3F\\x5E-\\x7E]+)|(?:\\x22(?:[\\x01-\\x08\\x0B\\x0C\\x0E-\\x1F\\x21\\x23-\\x5B\\x5D-\\x7F]|(?:\\x5C[\\x00-\\x7F]))*\\x22)))*@(?:(?:(?!.*[^.]{64,})(?:(?:(?:xn--)?[a-z0-9]+(?:-+[a-z0-9]+)*\\.){1,126}){1,}(?:(?:[a-z][a-z0-9]*)|(?:(?:xn--)[a-z0-9]+))(?:-+[a-z0-9]+)*)|(?:\\[(?:(?:IPv6:(?:(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){7})|(?:(?!(?:.*[a-f0-9][:\\]]){7,})(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,5})?::(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,5})?)))|(?:(?:IPv6:(?:(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){5}:)|(?:(?!(?:.*[a-f0-9]:){5,})(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,3})?::(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,3}:)?)))?(?:(?:25[0-5])|(?:2[0-4][0-9])|(?:1[0-9]{2})|(?:[1-9]?[0-9]))(?:\\.(?:(?:25[0-5])|(?:2[0-4][0-9])|(?:1[0-9]{2})|(?:[1-9]?[0-9]))){3}))\\]))$/iD';

$emailaddress = '[email protected]';

if (preg_match($pattern, $emailaddress) === 1) {
    // emailaddress is valid
}

P.S. A note on the regex pattern used above (from the PHP source). It looks like there is some copyright on it of Michael Rushton. As stated: "Feel free to use and redistribute this code. But please keep this copyright notice."

You can also try

var string = "[email protected]"
var exp = /(\w(=?@)\w+\.{1}[a-zA-Z]{2,})/i
alert(exp.test(string))

Used the above code in MVC5 project and it works completely fine with the validation error. Just try this code:

   [Required]
   [Display(Name = "Email")]
   [EmailAddress]

   [RegularExpression(@"^([A-Za-z0-9][^'!&\\#*$%^?<>()+=:;`~\[\]{}|/,?€@ ][a-zA-z0- 
    9-._][^!&\\#*$%^?<>()+=:;`~\[\]{}|/,?€@ ]*\@[a-zA-Z0-9][^!&@\\#*$%^?<> 
        ()+=':;~`.\[\]{}|/,?€ ]*\.[a-zA-Z]{2,6})$", ErrorMessage = "Please enter a 
   valid Email")]


   public string ReceiverMail { get; set; }

Email Validation Regex

^[a-z0-9][-a-z0-9._]+@([-a-z0-9]+.)+[a-z]{2,5}$

Or

^[a-z0-9][-a-z0-9._]+@([-a-z0-9]+[.])+[a-z]{2,5}$

Demo Link:

https://regex101.com/r/kN4nJ0/53

If you don,t want to write a whitepaper about Email-Standards, then use my following example which just introduce a well known CSS attribute(text-transform: lowercase) to solve the problem:

<input type="email" name="email" id="email" pattern="[a-zA-Z0-9._%+-]+@[a-z0-9.-]+\.[a-zA-Z]{2,4}" style="text-transform: lowercase" placeholder="enter email here ..." title="please enter a valid email" />

Check for @ and . and then send an email for them to verify.

I still can't use my .name email address on 20% of the sites on the internet because someone screwed up their email validation, or because it predates the new addresses being valid.

According to RFC 2821 and RFC 2822, the local-part of an email addresses may use any of these ASCII characters:

1. Uppercase and lowercare letters
2. The digits 0 through 9
3. The characters, !#$%&'*+-/=?^_`{|}~
4. The character "." provided that it is not the first or last character in the local-part.

Matches:

• a&[email protected]
• a*[email protected]
• a/[email protected]

Non-Matches:

• [email protected]
• [email protected]
• a>[email protected]

For one that is RFC 2821, 2822 Compliant you can use:

^((([!#$%&'*+\-/=?^_`{|}~\w])|([!#$%&'*+\-/=?^_`{|}~\w][!#$%&'*+\-/=?^_`{|}~\.\w]{0,}[!#$%&'*+\-/=?^_`{|}~\w]))[@]\w+([-.]\w+)*\.\w+([-.]\w+)*)$

Email - RFC 2821, 2822 Compliant

Try this

function isValidEmailAddress(emailAddress) {
    var pattern = new RegExp(/^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/);
    return pattern.test(emailAddress);
};

You can make a class to extend FPDF and add this:

class utfFPDF extends FPDF {

function Cell($w, $h=0, $txt="", $border=0, $ln=0, $align='', $fill=false, $link='')
{
    if (!empty($txt)){
        if (mb_detect_encoding($txt, 'UTF-8', false)){
            $txt = iconv('UTF-8', 'ISO-8859-5', $txt);

        }
    }
    parent::Cell($w, $h, $txt, $border, $ln, $align, $fill, $link);

} 

}

This has been answered well by Raynos. Yet there have been changes in the sequence library since the answer has been posted.

To get sequence working, follow this link: https://github.com/FuturesJS/sequence/tree/9daf0000289954b85c0925119821752fbfb3521e.

This is how you can get it working after npm install sequence:

var seq = require('sequence').Sequence;
var sequence = seq.create();

seq.then(function call 1).then(function call 2);

when do you call timerReset()? Perhaps you get that error when trying to call it after setTimeout() has already done its thing?

wrap it in

if (window.myTimeout) { 
  clearTimeout(myTimeout);
  myTimeout = setTimeout("timerDone()", 1000 * 1440);
}

edit: Actually, upon further reflection, since you did mention jQuery (and yet don't have any actual jQuery code here... I wonder if you have this nested within some jQuery (like inside a $(document).ready(.. and this is a matter of variable scope. If so, try this:

window.message="Logged in";
window.myTimeout = setTimeout("timerDone()",1000 * 1440);
function timerDone()
{
    window.message="Logged out";   
}
function timerReset()
{


    clearTimeout(window.myTimeout);
    window.myTimeout = setTimeout("timerDone()", 1000 * 1440);
}

Like this.

SELECT DISTINCT COL_NAME FROM myTable WHERE COL_NAME iLIKE '%Priceorder%'

In postgresql.

(Note: root, base, apex domains are all the same thing. Using interchangeably for google-foo.)

Traditionally, to point your apex domain you'd use an A record pointing to your server's IP. This solution doesn't scale and isn't viable for a cloud platform like Heroku, where multiple and frequently changing backends are responsible for responding to requests.

For subdomains (like www.example.com) you can use CNAME records pointing to your-app-name.herokuapp.com. From there on, Heroku manages the dynamic A records behind your-app-name.herokuapp.com so that they're always up-to-date. Unfortunately, the DNS specification does not allow CNAME records on the zone apex (the base domain). (For example, MX records would break as the CNAME would be followed to its target first.)

Back to root domains, the simple and generic solution is to not use them at all. As a fallback measure, some DNS providers offer to setup an HTTP redirect for you. In that case, set it up so that example.com is an HTTP redirect to www.example.com.

Some DNS providers have come forward with custom solutions that allow CNAME-like behavior on the zone apex. To my knowledge, we have DNSimple's ALIAS record and DNS Made Easy's ANAME record; both behave similarly.

Using those, you could setup your records as (using zonefile notation, even tho you'll probably do this on their web user interface):

@   IN ALIAS your-app-name.herokuapp.com.
www IN CNAME your-app-name.herokuapp.com.

Remember @ here is a shorthand for the root domain (example.com). Also mind you that the trailing dots are important, both in zonefiles, and some web user interfaces.

See also:

• Doing DNS right with Heroku
• Avoiding Naked Domains and DNS A-records

Remarks:

• Amazon's Route 53 also has an ALIAS record type, but it's somewhat limited, in that it only works to point within AWS. At the moment I would not recommend using this for a Heroku setup.

• Some people confuse DNS providers with domain name registrars, as there's a bit of overlap with companies offering both. Mind you that to switch your DNS over to one of the aforementioned providers, you only need to update your nameserver records with your current domain registrar. You do not need to transfer your domain registration.

There is no need to override highlighted as computed property. You can use property observer to trigger background color change:

override var highlighted: Bool {
    didSet {
        backgroundColor = highlighted ? UIColor.lightGrayColor() : UIColor.whiteColor()
    }
}

Swift 4

override open var isHighlighted: Bool {
    didSet {
        backgroundColor = isHighlighted ? UIColor.lightGray : UIColor.white
    }
}

As simple as this command says npm uninstall your-package-name This command will simply remove package without pain from node modules folder as well as from package.json

This will return the matching word or an error if no match is found. For this example I used the following.

List of words to search for: G1:G7
Cell to search in: A1

=INDEX(G1:G7,MAX(IF(ISERROR(FIND(G1:G7,A1)),-1,1)*(ROW(G1:G7)-ROW(G1)+1)))

Enter as an array formula by pressing Ctrl+Shift+Enter.

This formula works by first looking through the list of words to find matches, then recording the position of the word in the list as a positive value if it is found or as a negative value if it is not found. The largest value from this array is the position of the found word in the list. If no word is found, a negative value is passed into the INDEX() function, throwing an error.

To return the row number of a matching word, you can use the following:

=MAX(IF(ISERROR(FIND(G1:G7,A1)),-1,1)*ROW(G1:G7))

This also must be entered as an array formula by pressing Ctrl+Shift+Enter. It will return -1 if no match is found.

You should take a look at Batarang for AngularJS debugging

As for your issue:

Your scope variable is not directly attached to the modal correctly. Below is the adjusted code. You need to specify when the modal shows using ng-show

<!-- Confirmation Dialog -->
<div class="modal" modal="showModal" ng-show="showModal">
  <div class="modal-dialog">
    <div class="modal-content">
      <div class="modal-header">
        <button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
        <h4 class="modal-title">Delete confirmation</h4>
      </div>
      <div class="modal-body">
        <p>Are you sure?</p>
      </div>
      <div class="modal-footer">
        <button type="button" class="btn btn-default" data-dismiss="modal" ng-click="cancel()">No</button>
        <button type="button" class="btn btn-primary" ng-click="ok()">Yes</button>
      </div>
    </div>
  </div>
</div>
<!-- End of Confirmation Dialog -->

You need a whole input match here.

System.out.println(test.matches("^(http|https|ftp)://.*$")); 

Edit:(Based on @davidchambers's comment)

System.out.println(test.matches("^(https?|ftp)://.*$")); 

A variant that works with all of the following inputs:

• "file.name.with.dots.txt"
• "file.txt"
• "file"
• ""
• null
• undefined

would be:

var re = /(?:\.([^.]+))?$/;

var ext = re.exec("file.name.with.dots.txt")[1];   // "txt"
var ext = re.exec("file.txt")[1];                  // "txt"
var ext = re.exec("file")[1];                      // undefined
var ext = re.exec("")[1];                          // undefined
var ext = re.exec(null)[1];                        // undefined
var ext = re.exec(undefined)[1];                   // undefined

Explanation

(?:         # begin non-capturing group
  \.        #   a dot
  (         #   begin capturing group (captures the actual extension)
    [^.]+   #     anything except a dot, multiple times
  )         #   end capturing group
)?          # end non-capturing group, make it optional
$           # anchor to the end of the string

The solution given from "Nott Responding" seems to fire both events, click and dblclick when doubleclicked. However I think it points in the right direction.

I did a small change, this is the result :

$("#clickMe").click(function (e) {
    var $this = $(this);
    if ($this.hasClass('clicked')){
        $this.removeClass('clicked'); 
        alert("Double click");
        //here is your code for double click
    }else{
        $this.addClass('clicked');
        setTimeout(function() { 
            if ($this.hasClass('clicked')){
                $this.removeClass('clicked'); 
                alert("Just one click!");
                //your code for single click              
            }
        }, 500);          
    }
});

Try it

http://jsfiddle.net/calterras/xmmo3esg/

Using Django 3.1.1 and all solutions I tried failed. However, adding the "csrfmiddlewaretoken" key to my POST body worked. Here's the call I made:

$.post(url, {
  csrfmiddlewaretoken: window.CSRF_TOKEN,
  method: "POST",
  data: JSON.stringify(data),
  dataType: 'JSON',
});

And in the HTML template:

<script type="text/javascript">
  window.CSRF_TOKEN = "{{ csrf_token }}";
</script>

Well (a long one) ... if you insist to have $scope access inside a service, you can:

Create a getter/setter service

ngapp.factory('Scopes', function (){
  var mem = {};
  return {
    store: function (key, value) { mem[key] = value; },
    get: function (key) { return mem[key]; }
  };
});

Inject it and store the controller scope in it

ngapp.controller('myCtrl', ['$scope', 'Scopes', function($scope, Scopes) {
  Scopes.store('myCtrl', $scope);
}]);

Now, get the scope inside another service

ngapp.factory('getRoute', ['Scopes', '$http', function(Scopes, $http){
  // there you are
  var $scope = Scopes.get('myCtrl');
}]);

I think the size of the object matters as well. In one of my projects, we had declared and initialized a large two dimensional array that was making the application throw an out-of-memory exception. We moved the declaration out of the loop instead and cleared the array at the start of every iteration.

Use this:

var dict = list.ToDictionary(x => x);

See MSDN for more info.

As Pranay points out in the comments, this will fail if an item exists in the list multiple times.
Depending on your specific requirements, you can either use var dict = list.Distinct().ToDictionary(x => x); to get a dictionary of distinct items or you can use ToLookup instead:

var dict = list.ToLookup(x => x);

This will return an ILookup<string, string> which is essentially the same as IDictionary<string, IEnumerable<string>>, so you will have a list of distinct keys with each string instance under it.

Bash can get the last part of a path without having to call the external basename:

subdir="/path/to/whatever/${1##*/}"

You can use replace and replaceAll with regular expressions.

String[] strings = {"a", "b", "c"};

String result = Arrays.asList(strings).toString().replaceAll("(^\\[|\\]$)", "").replace(", ", ",");

Because Arrays.asList().toString() produces: "[a, b, c]", we do a replaceAll to remove the first and last brackets and then (optionally) you can change the ", " sequence for "," (your new separator).

A stripped version (fewer chars):

String[] strings = {"a", "b", "c"};

String result = ("" + Arrays.asList(strings)).replaceAll("(^.|.$)", "").replace(", ", "," );

Regular expressions are very powerful, specially String methods "replaceFirst" and "replaceAll". Give them a try.

You can't have bare words in the code, that's the reason why they created variables (your code will fail with NameError).

The code you provided would create a database table named month (plus whatever prefix django adds to that), because that's the name of the CharField.

But there are better ways to create the particular choices you want. See a previous Stack Overflow question.

import calendar
tuple((m, m) for m in calendar.month_name[1:])

I had the same issue here. As Magnus said above, for me it was happening due to an SDK update to version 22.0.5.

After performing a full update in my Android SDK (including Google Play Services) and Android plugins in Eclipse, I was able to use play services lib in my application.

If I understand correctly, what you want to do is divide by the maximum value in each column. You can do this easily using broadcasting.

Starting with your example array:

import numpy as np

x = np.array([[1000,  10,   0.5],
              [ 765,   5,  0.35],
              [ 800,   7,  0.09]])

x_normed = x / x.max(axis=0)

print(x_normed)
# [[ 1.     1.     1.   ]
#  [ 0.765  0.5    0.7  ]
#  [ 0.8    0.7    0.18 ]]

x.max(0) takes the maximum over the 0th dimension (i.e. rows). This gives you a vector of size (ncols,) containing the maximum value in each column. You can then divide x by this vector in order to normalize your values such that the maximum value in each column will be scaled to 1.

If x contains negative values you would need to subtract the minimum first:

x_normed = (x - x.min(0)) / x.ptp(0)

Here, x.ptp(0) returns the "peak-to-peak" (i.e. the range, max - min) along axis 0. This normalization also guarantees that the minimum value in each column will be 0.

I've tried a lot of things but finally, including uninstall with the automated tools. So, I've uninstalled manually scikit-learn.

sudo rm -R /home/ubuntu/.local/lib/python3.6/site-packages/sklearn
sudo rm -R /home/ubuntu/.local/lib/python3.6/site-packages/scikit_learn-0.20.0-py3.6.egg-info

And re-install using pip

sudo pip3.6 install -U scikit-learn

Hope that can help someone else!

If figured I'd throw this in. Simple and dirty way to do wildcard searches.

import re
import os

[a for a in os.listdir(".") if re.search("^.*\.py$",a)]

What you're looking for is

<input type="text" [(ngModel)]="mymodel" (keyup)="valuechange()" />
{{mymodel}}

Then do whatever you want with the data by accessing the bound this.mymodel in your .ts file.

Also worth noting for completeness, my usual method for doing this with 2 same-length arrays @keys and @vals which you would prefer were a hash...

my %hash = map { $keys[$_] => $vals[$_] } (0..@keys-1);

@Mark Even though the compiler is allowed to optimize away the (stack based) temporary copy of the variable and gcc (in recent versions) is doing so, doesn't mean all compilers will always do so.

I just tested it with the compilers we use in our current project and 3 out of 4 do not optimize it.

Never assume the compiler gets it right, especially if the possibly faster, but never slower code is as easy to read.

If you don't have a really stupid implementation of one of the operators in your code:

Alwas prefer ++i over i++.

Also CON, PRN, AUX, NUL, COM# and a few others are never legal filenames in any directory with any extension.

You can use another console method:

let name = prompt("what is your name?");
console.log(`story ${name} story`);

Suppose consider two string s and t.
Give them some values.
When you compare them using (s==t) it returns a boolean value(true or false , 1 or 0).
But when you compare using s.compare(t) ,the expression returns a value
(i) 0 - if s and t are equal
(ii) <0 - either if the value of the first unmatched character in s is less than that of t or the length of s is less than that of t.
(iii) >0 - either if the value of the first unmatched character in t is less than that of s or the length of t is less than that of s.

In the interests of helping anyone who lands here but was actually looking for a jQuery free way of doing this:

element.classList.contains('your-class-name')

Although I don't know about asp.net mvc, but this is what we should do in a normal .net website. It should work for asp.net mvc also.

YourSessionClass obj=Session["key"] as YourSessionClass;
if(obj==null){
obj=new YourSessionClass();
Session["key"]=obj;
}

You would put this inside a method for easy access. HTH

The answers so far only consider the worth of have a null key, but the question also asks about any number of null values.

The benefit of storing the value null against a key in a HashMap is the same as in databases, etc - you can record a distinction between having a value that is empty (e.g. string ""), and not having a value at all (null).

You won't be able to draw images directly from another server into a canvas and then use getImageData. It's a security issue and the canvas will be considered "tainted".

Would it work for you to save a copy of the image to your server using PHP and then just load the new image? For example, you could send the URL to the PHP script and save it to your server, then return the new filename to your javascript like this:

<?php //The name of this file in this example is imgdata.php

  $url=$_GET['url'];

  // prevent hackers from uploading PHP scripts and pwning your system
  if(!@is_array(getimagesize($url))){
    echo "path/to/placeholderImage.png";
    exit("wrong file type.");
  }

  $img = file_get_contents($url);

  $fn = substr(strrchr($url, "/"), 1);
  file_put_contents($fn,$img);
  echo $fn;

?>

You'd use the PHP script with some ajax javascript like this:

xi=new XMLHttpRequest();
xi.open("GET","imgdata.php?url="+yourImageURL,true);
xi.send();

xi.onreadystatechange=function() {
  if(xi.readyState==4 && xi.status==200) {
    img=new Image;
    img.onload=function(){ 
      ctx.drawImage(img, 0, 0, canvas.width, canvas.height);
    }
    img.src=xi.responseText;
  }
}

If you use getImageData on the canvas after that, it will work fine.

Alternatively, if you don't want to save the whole image, you could pass x & y coordinates to your PHP script and calculate the pixel's rgba value on that side. I think there are good libraries for doing that kind of image processing in PHP.

If you want to use this approach, let me know if you need help implementing it.

edit-1: peeps pointed out that the php script is exposed and allows the internet to potentially use it maliciously. there are a million ways to handle this, one of the simplest being some sort of URL obfuscation... i reckon secure php practices deserves a separate google ;P

edit-2: by popular demand, I've added a check to ensure it is an image and not a php script (from: PHP check if file is an image).

You can install boost on ubuntu by using the following commands:

sudo apt update

sudo apt install libboost-all-dev

Not a single advice solve my issue. Adjust Pan is almost as like work Adjust Resize. If i set Adjust Nothing than layout not move up but it hide my edittext of bottom that i am corrently writing. So after 24 hour of continuous searching I found this source and it solve my problem.

For docker-compose you can use following docker-compose.yml

version: '2'
services:
  nginx:
    image: nginx
    container_name: nginx-container
    networks:
      static-network:
        ipv4_address: 172.20.128.2
networks:
  static-network:
    ipam:
      config:
        - subnet: 172.20.0.0/16
          #docker-compose v3+ do not use ip_range
          ip_range: 172.28.5.0/24

from host you can test using:

docker-compose up -d
curl 172.20.128.2

Modern docker-compose does not change ip address that frequently.

To find ips of all containers in your docker-compose in a single line use:

for s in `docker-compose ps -q`; do echo ip of `docker inspect -f "{{.Name}}" $s` is `docker inspect -f '{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' $s`; done

If you want to automate, you can use something like this example gist

This exact question is answered on mySql workbench-faq:

Hover over an acronym to view a description, and see the Section 8.1.11.2, “The Columns Tab” and MySQL CREATE TABLE documentation for additional details.

That means hover over an acronym in the mySql Workbench table editor.

Section 8.1.11.2, “The Columns Tab”

Java Language Specification defines E1 op= E2 to be equivalent to E1 = (T) ((E1) op (E2)) where T is a type of E1 and E1 is evaluated once.

That's a technical answer, but you may be wondering why that's a case. Well, let's consider the following program.

public class PlusEquals {
    public static void main(String[] args) {
        byte a = 1;
        byte b = 2;
        a = a + b;
        System.out.println(a);
    }
}

What does this program print?

Did you guess 3? Too bad, this program won't compile. Why? Well, it so happens that addition of bytes in Java is defined to return an int. This, I believe was because the Java Virtual Machine doesn't define byte operations to save on bytecodes (there is a limited number of those, after all), using integer operations instead is an implementation detail exposed in a language.

But if a = a + b doesn't work, that would mean a += b would never work for bytes if it E1 += E2 was defined to be E1 = E1 + E2. As the previous example shows, that would be indeed the case. As a hack to make += operator work for bytes and shorts, there is an implicit cast involved. It's not that great of a hack, but back during the Java 1.0 work, the focus was on getting the language released to begin with. Now, because of backwards compatibility, this hack introduced in Java 1.0 couldn't be removed.

You have a choice, when you create an object array (as opposed to an array of primitives).

One option is to specify a size for the array, in which case it will just contain lots of nulls.

String[] array = new String[10]; // Array of size 10, filled with nulls.

The other option is to specify what will be in the array.

String[] array = new String[] {"Larry", "Curly", "Moe"};  // Array of size 3, filled with stooges.

But you can't mix the two syntaxes. Pick one or the other.

Replace the value in select statement itself...

(CASE WHEN Mobile LIKE '966%' THEN (select REPLACE(CAST(Mobile AS nvarchar(MAX)),'966','0')) ELSE Mobile END)

I suppose better would be to use re.match() function. here is an example which may help you.

import re
import nltk
from nltk.tokenize import word_tokenize
nltk.download('punkt')
sentences = word_tokenize("I love to learn NLP \n 'a :(")
#for i in range(len(sentences)):
sentences = [word.lower() for word in sentences if re.match('^[a-zA-Z]+', word)]  
sentences

values = set(map(lambda x:x[1], mylist))
newlist = [[y[0] for y in mylist if y[1]==x] for x in values]

You can use like this:

String Query = "Select * from " + TABLE_NAME + " where " + Cust_id + " = " + cust_no;

Cursor cursorr = db.rawQuery(Query, null);
if(cursor.getCount() <= 0){
cursorr.close();
}
cursor.close();

It is indeed correct, as other answers have stated. You should note though, that some web crawlers will set off 404s for these by requesting them on your server as if a local URL. (They disregard the double slash and treat it as a single slash).

You may want to set up a rule on your webserver to catch these and redirect them.

For example, with Nginx, you'd add something like:

location ~* /(?<redirect_domain>((([a-z]|[0-9]|\-)+)\.)+([a-z])+)/(?<redirect_path>.*) {
  return 301 $scheme:/$redirect_domain/$redirect_path;
}

Do note though, that if you use periods in your URIs, you'll need to increase the specificity or it will end up redirecting those pages to nonexistent domains.

Also, this is a rather massive regex to be running for each query -- in my opinion, it's worth punishing non-compliant browsers with 404s over a (slight) performance hit on the majority of compliant browsers.

This might give you some ideas

.NET C# View Model

public class DepartmentViewModel
{
    public int Id { get; set; }
    public string Name { get; set; }
}

.NET C# Web Api Controller

public class DepartmentController : BaseApiController
{
    [HttpGet]
    public HttpResponseMessage Get()
    {
        var sms = Ctx.Departments;

        var vms = new List<DepartmentViewModel>();

        foreach (var sm in sms)
        {
            var vm = new DepartmentViewModel()
            {
                Id = sm.Id,
                Name = sm.DepartmentName
            };
            vms.Add(vm);
        }

        return Request.CreateResponse(HttpStatusCode.OK, vms);
    }

}

Angular Controller:

$http.get('/api/department').then(
    function (response) {
        $scope.departments = response.data;
    },
    function (response) {
        toaster.pop('error', "Error", "An unexpected error occurred.");
    }
);

$http.get('/api/getTravelerInformation', { params: { id: $routeParams.userKey } }).then(
   function (response) {
       $scope.request = response.data;
       $scope.travelerDepartment = underscoreService.findWhere($scope.departments, { Id: $scope.request.TravelerDepartmentId });
   },
    function (response) {
        toaster.pop('error', "Error", "An unexpected error occurred.");
    }
);

Angular Template:

<div class="form-group">
    <label>Department</label>
    <div class="left-inner-addon">
        <i class="glyphicon glyphicon-hand-up"></i>
        <select ng-model="travelerDepartment"
                ng-options="department.Name for department in departments track by department.Id"
                ng-init="request.TravelerDepartmentId = travelerDepartment.Id"
                ng-change="request.TravelerDepartmentId = travelerDepartment.Id"
                class="form-control">
            <option value=""></option>
        </select>
    </div>
</div>

In C99 (supported by clang and gcc) there's an obscure syntax for passing multi-dimensional arrays to functions by reference:

int l_matrix[10][20];

void test(int matrix_ptr[static 10][20]) {
}

int main(void) {
    test(l_matrix);
}

Unlike a plain pointer, this hints about array size, theoretically allowing compiler to warn about passing too-small array and spot obvious out of bounds access.

Sadly, it doesn't fix sizeof() and compilers don't seem to use that information yet, so it remains a curiosity.

Without jQuery-UI accordion, one can simply do this:

<div class="section">
  <div class="section-title">
    Section 1
  </div>
  <div class="section-content">
    Section 1 Content: Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet.
  </div>
</div>

<div class="section">
  <div class="section-title">
    Section 2
  </div>
  <div class="section-content">
    Section 2 Content: Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet.
  </div>
</div>

And js

$( ".section-title" ).click(function() {
    $(this).parent().find( ".section-content" ).slideToggle();
});

https://jsfiddle.net/gayan_dasanayake/6ogxL7nm/

You can use this extension known as Project Manager

In this the projects are saved in a file projects.json, just save the project and by pressing Shift + Alt + P you can see the list of all your saved projects, from there you can easily switch your projects.

I haven't tried it but if you put a div in your table cell set so that it will have scrollbars if needed, then you could insert in there, with a fixed height on the div and it should keep your table row to a fixed height.

For me, I usually use DataContext together in order to bind two-depth property such as this question.

<TextBlock DataContext="{Binding SelectedRule}" Text="{Binding Name}" />

Or, I prefer to use ElementName because it achieves bindings only with view controls.

<TextBlock DataContext="{Binding ElementName=lbRules, Path=SelectedItem}" Text="{Binding Name}" />

While the answers above are good they will not catch network errors. As Mark mentioned, BadResponseException is just a super class for ClientException and ServerException. But RequestException is also a super class of BadResponseException. RequestException will be thrown for not only 400 and 500 errors but network errors and infinite redirects too. So let's say you request the page below but your network is playing up and your catch is only expecting a BadResponseException. Well your application will throw an error.

It's better in this case to expect RequestException and check for a response.

try {
  $client->get('http://123123123.com')
} catch (RequestException $e) {

  // If there are network errors, we need to ensure the application doesn't crash.
  // if $e->hasResponse is not null we can attempt to get the message
  // Otherwise, we'll just pass a network unavailable message.
  if ($e->hasResponse()) {
    $exception = (string) $e->getResponse()->getBody();
    $exception = json_decode($exception);
    return new JsonResponse($exception, $e->getCode());
  } else {
    return new JsonResponse($e->getMessage(), 503);
  }

}

What is your output when you do java -version? This will tell you what version the running JVM is.

The Unsupported major.minor version 51.0 error could mean:

• Your server is running a lower Java version then the one used to compile your Servlet and vice versa

Either way, uninstall all JVM runtimes including JDK and download latest and re-install. That should fix any Unsupported major.minor error as you will have the lastest JRE and JDK (Maybe even newer then the one used to compile the Servlet)

See: http://www.java.com/en/download/manual.jsp (7 Update 25 )

and here: http://www.oracle.com/technetwork/java/javase/downloads/index.html (Java Platform (JDK) 7u25)

for the latest version of the JRE and JDK respectively.

EDIT:

Most likely your code was written in Java7 however maybe it was done using Java7update4 and your system is running Java7update3. Thus they both are effectively the same major version but the minor versions differ. Only the larger minor version is backward compatible with the lower minor version.

Edit 2 : If you have more than one jdk installed on your pc. you should check that Apache Tomcat is using the same one (jre) you are compiling your programs with. If you installed a new jdk after installing apache it normally won't select the new version.

There is a third-party log4net adapter for the ASP.NET Core logging interface.

Only thing you need to do is pass the ILoggerFactory to your Startup class, then call

loggerFactory.AddLog4Net();

and have a config in place. So you don't have to write any boiler-plate code.

More info here

The solution for the error is to add this line at the top of the code:

process.env.NODE_TLS_REJECT_UNAUTHORIZED = "0";

Differences between an XML Schema Definition (XSD) and Document Type Definition (DTD) include:

• XML schemas are written in XML while DTD are derived from SGML syntax.
• XML schemas define datatypes for elements and attributes while DTD doesn't support datatypes.
• XML schemas allow support for namespaces while DTD does not.
• XML schemas define number and order of child elements, while DTD does not.
• XML schemas can be manipulated on your own with XML DOM but it is not possible in case of DTD.
• using XML schema user need not to learn a new language but working with DTD is difficult for a user.
• XML schema provides secure data communication i.e sender can describe the data in a way that receiver will understand, but in case of DTD data can be misunderstood by the receiver.
• XML schemas are extensible while DTD is not extensible.

Not all these bullet points are 100% accurate, but you get the gist.

On the other hand:

• DTD lets you define new ENTITY values for use in your XML file.
• DTD lets you extend it local to an individual XML file.

It was my own stupidity:

java.text.DateFormat dateFormat = android.text.format.DateFormat.getDateFormat(getApplicationContext());

Putting this inside onCreate() method fixed my problem.

For those who want to be notified of download completion of a single image that gets requested after $(window).load fires, you can use the image element's load event.

e.g.:

// create a dialog box with an embedded image
var $dialog = $("<div><img src='" + img_url + "' /></div>");

// get the image element (as a jQuery object)
var $imgElement = $dialog.find("img");

// wait for the image to load 
$imgElement.load(function() {
    alert("The image has loaded; width: " + $imgElement.width() + "px");
});

Ah yes. Welcome to Asynchronous execution.

Basically, pausing a script would cause the browser and page to become unresponsive for 3 seconds. This is horrible for web apps, and so isn't supported.

Instead, you have to think "event-based". Use setTimeout to call a function after a certain amount of time, which will continue to run the JavaScript on the page during that time.

cgi.escape extended

This version improves cgi.escape. It also preserves whitespace and newlines. Returns a unicode string.

def escape_html(text):
    """escape strings for display in HTML"""
    return cgi.escape(text, quote=True).\
           replace(u'\n', u'<br />').\
           replace(u'\t', u'&emsp;').\
           replace(u'  ', u' &nbsp;')

for example

>>> escape_html('<foo>\nfoo\t"bar"')
u'&lt;foo&gt;<br />foo&emsp;&quot;bar&quot;'

The working code

var jsonData = [{person:"me", age :"30"},{person:"you",age:"25"}];_x000D_
_x000D_
for(var obj in jsonData){_x000D_
    if(jsonData.hasOwnProperty(obj)){_x000D_
    for(var prop in jsonData[obj]){_x000D_
        if(jsonData[obj].hasOwnProperty(prop)){_x000D_
           alert(prop + ':' + jsonData[obj][prop]);_x000D_
        }_x000D_
    }_x000D_
}_x000D_
}

/*****************************************************************************
     * return application path
     * @return
     *****************************************************************************/
    public static String getApplcatonPath(){
        CodeSource codeSource = MainApp.class.getProtectionDomain().getCodeSource();
        File rootPath = null;
        try {
            rootPath = new File(codeSource.getLocation().toURI().getPath());
        } catch (URISyntaxException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }           
        return rootPath.getParentFile().getPath();
    }//end of getApplcatonPath()

The latest version of Genymotion (2.10.0 onwards) now allows you to install GApps from the emulator toolbar:

Click the GApps button the toolbar

Accept the Terms and Conditions

Your download of google apps will then begin

Once the download is complete simply restart the virtual device!

I had a similar problem and google was sending me to this post. My solution was a bit different and less compact, but hopefully this can be useful to someone.

Showing your image with matplotlib.pyplot.imshow is generally a fast way to display 2D data. However this by default labels the axes with the pixel count. If the 2D data you are plotting corresponds to some uniform grid defined by arrays x and y, then you can use matplotlib.pyplot.xticks and matplotlib.pyplot.yticks to label the x and y axes using the values in those arrays. These will associate some labels, corresponding to the actual grid data, to the pixel counts on the axes. And doing this is much faster than using something like pcolor for example.

Here is an attempt at this with your data:

import matplotlib.pyplot as plt

# ... define 2D array hist as you did

plt.imshow(hist, cmap='Reds')
x = np.arange(80,122,2) # the grid to which your data corresponds
nx = x.shape[0]
no_labels = 7 # how many labels to see on axis x
step_x = int(nx / (no_labels - 1)) # step between consecutive labels
x_positions = np.arange(0,nx,step_x) # pixel count at label position
x_labels = x[::step_x] # labels you want to see
plt.xticks(x_positions, x_labels)
# in principle you can do the same for y, but it is not necessary in your case

If you are doing something for the web you need to use the js file extension:

import { moo } from 'file.js';

If you are doing something for nodejs I don't think use the js file extension:

import { moo } from 'file';

Just try with this command:

$ sudo systemctl enable mongod

I remember from Czech book about C: read the declaration that you start with the variable and go left. So for

char * const a;

you can read as: "a is variable of type constant pointer to char",

char const * a;

you can read as: "a is a pointer to constant variable of type char. I hope this helps.

Bonus:

const char * const a;

You will read as a is constant pointer to constant variable of type char.

Ink-Jet is right. More specifically, an .o (.obj) -- or object file is a single source file compiled in to machine code (I'm not sure if the "machine code" is the same or similar to an executable machine code). Ultimately, it's an intermediate between an executable program and plain-text source file.

The linker uses the o files to assemble the file executable.

Wikipedia may have more detailed information. I'm not sure how much info you'd like or need.

X.each_with_index do |item, index|
  puts "current_index: #{index}"
end

To add another alternative to tuple(l), as of Python >= 3.5 you can do:

t = *l,  # or t = (*l,) 

short, a bit faster but probably suffers from readability.

This essentially unpacks the list l inside a tuple literal which is created due to the presence of the single comma ,.

P.s: The error you are receiving is due to masking of the name tuple i.e you assigned to the name tuple somewhere e.g tuple = (1, 2, 3).

Using del tuple you should be good to go.

I'm putting this in a new answer because no linebreaks / codeblocks in comments. I assume you want those nans to turn into a blank string? I couldn't find a nice way to do this, only do the ugly method:

s = pd.Series([1001.,1002.,None])
a = s.loc[s.isnull()].fillna('')
b = s.loc[s.notnull()].astype(int).astype(str)
result = pd.concat([a,b])

I think the following class code will help you. It supports multithreading but you can do some improvement like remove sync block and and sync to getRandomId() method.

public class RandomNumberGenerator {

private static final Set<String> generatedNumbers = new HashSet<String>();

public RandomNumberGenerator() {
}

public static void main(String[] args) {
    final int maxLength = 7;
    final int maxTry = 10;

    for (int i = 0; i < 10; i++) {
        System.out.println(i + ". studentId=" + RandomNumberGenerator.getRandomId(maxLength, maxTry));
    }
}

public static String getRandomId(final int maxLength, final int maxTry) {
    final Random random = new Random(System.nanoTime());
    final int max = (int) Math.pow(10, maxLength);
    final int maxMin = (int) Math.pow(10, maxLength-1);
    int i = 0;
    boolean unique = false;
    int randomId = -1;
    while (i < maxTry) {
        randomId = random.nextInt(max - maxMin - 1) + maxMin;

        synchronized (generatedNumbers) {
            if (generatedNumbers.contains(randomId) == false) {
                unique = true;
                break;
            }
        }
        i++;
    }
    if (unique == false) {
        throw new RuntimeException("Cannot generate unique id!");
    }

    synchronized (generatedNumbers) {
        generatedNumbers.add(String.valueOf(randomId));
    }

    return String.valueOf(randomId);
}

}

string = string.replace(/[\W_]/g, "_");

For default tooltip this can be used -

System.Windows.Forms.ToolTip ToolTip1 = new System.Windows.Forms.ToolTip();
ToolTip1.SetToolTip(this.textBox1, "Hello world");

A customized tooltip can also be used in case if formatting is required for tooltip message. This can be created by custom formatting the form and use it as tooltip dialog on mouse hover event of the control. Please check following link for more details -

http://newapputil.blogspot.in/2015/08/create-custom-tooltip-dialog-from-form.html

Please note that for Chrome to work properly it needs to be autocomplete="false"

This error just means that myapp.views.home is not something that can be called, like a function. It is a string in fact. While your solution works in django 1.9, nevertheless it throws a warning saying this will deprecate from version 1.10 onwards, which is exactly what has happened. The previous solution by @Alasdair imports the necessary view functions into the script through either from myapp import views as myapp_views or from myapp.views import home, contact

From your post I gather that you want to compare dates, not arrays. If this is the case, then use the appropriate object: a datetime object.

Please check the documentation for the datetime module. Dates are a tough cookie. Use reliable algorithms.

I've had the same issue in my JavaFX Application. Even more weird: In my Windows developement environment everything worked fine with the fxml loader. But when I executed the exact same code on my Debian maschine, I got similar errors with "location not set".

I read all answers here, but none seemed to really "solve" the problem. My solution was easy and I hope it helps some of you:

Maybe Java gets confused, by the getClass() method. If something runs in different threads or your class implements any interfaces, it may come to the point, that a different class than yours is returned by the getClass() method. In this case, your relative path to creatProduct.fxml will be wrong, because your "are" not in the path you think you are...

So to be on the save side: Be more specific and try use the static class field on your Class (Note the YourClassHere.class).

@FXML
public void gotoCreateProduct(ActionEvent event) throws IOException {
   Stage stage = new Stage();
    stage.setTitle("Shop Management");
    FXMLLoader myLoader = new FXMLLoader(YourClassHere.class.getResource("creatProduct.fxml"));
    Pane myPane = (Pane) myLoader.load();            
    Scene scene = new Scene(myPane);
    stage.setScene(scene);
    prevStage.close();
    setPrevStage(stage);
    stage.show();      
}

After realizing this, I will ALWAYS do it like this. Hope that helps!

As a String class extension

SWIFT 4

extension String {
    func isValidEmail() -> Bool {
        // here, `try!` will always succeed because the pattern is valid
        let regex = try! NSRegularExpression(pattern: "^[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$", options: .caseInsensitive)
        return regex.firstMatch(in: self, options: [], range: NSRange(location: 0, length: count)) != nil
    }
}

Usage

if "rdfsdsfsdfsd".isValidEmail() {

}

Similar to hooblei's answer, just with interpolation:

<li ng-style="{'background-image': 'url({{ image.source }})'}">...</li>

I found out that the image that you are specify with the og:image, has to actually be present in the HTML page inside an image tag.

the thumbnail appeared for me only after i added an image tag for the image. it was commented out. but worked.

In v2.0 of the Graph API, calling /me/friends returns the person's friends who also use the app.

In addition, in v2.0, you must request the user_friends permission from each user. user_friends is no longer included by default in every login. Each user must grant the user_friends permission in order to appear in the response to /me/friends. See the Facebook upgrade guide for more detailed information, or review the summary below.

The /me/friendlists endpoint and user_friendlists permission are not what you're after. This endpoint does not return the users friends - its lets you access the lists a person has made to organize their friends. It does not return the friends in each of these lists. This API and permission is useful to allow you to render a custom privacy selector when giving people the opportunity to publish back to Facebook.

If you want to access a list of non-app-using friends, there are two options:

1. If you want to let your people tag their friends in stories that they publish to Facebook using your App, you can use the /me/taggable_friends API. Use of this endpoint requires review by Facebook and should only be used for the case where you're rendering a list of friends in order to let the user tag them in a post.

2. If your App is a Game AND your Game supports Facebook Canvas, you can use the /me/invitable_friends endpoint in order to render a custom invite dialog, then pass the tokens returned by this API to the standard Requests Dialog.

In other cases, apps are no longer able to retrieve the full list of a user's friends (only those friends who have specifically authorized your app using the user_friends permission).

For apps wanting allow people to invite friends to use an app, you can still use the Send Dialog on Web or the new Message Dialog on iOS and Android.

None of these solutions worked for me on Windows 7 and within IDLE. Wound up using PowerShell, running Python within it and exiting to call "cls" in PowerShell to clear the window.

CONS: Assumes Python is already in the PATH variable. Also, this does clear your Python variables (though so does restarting the shell).

PROS: Retains any window customization you've made (color, font-size).

There are better answers here, but how I fix this may be relevant for someone:

After checking out the project from SVN, instead of choosing the 1.7 version, I chose Subversion 1.6 and it worked.

I have a simple Location class that I use to handle all of my marker-related things. I'll paste my code below for you to take a gander at.

The last line(s) is what actually creates the marker objects. It loops through some JSON of my locations, which look something like this:

{"locationID":"98","name":"Bergqvist Järn","note":null,"type":"retail","address":"Smidesvägen 3","zipcode":"69633","city":"Askersund","country":"Sverige","phone":"0583-120 35","fax":null,"email":null,"url":"www.bergqvist-jb.com","lat":"58.891079","lng":"14.917371","contact":null,"rating":"0","distance":"45.666885421019"}

Here is the code:

If you look at the target() method in my Location class, you'll see that I keep references to the infowindow's and can simply open() and close() them because of a reference.

See a live demo: http://ww1.arbesko.com/en/locator/ (type in a Swedish city, like stockholm, and hit enter)

var Location = function() {
    var self = this,
        args = arguments;

    self.init.apply(self, args);
};

Location.prototype = {
    init: function(location, map) {
        var self = this;

        for (f in location) { self[f] = location[f]; }

        self.map = map;
        self.id = self.locationID;

        var ratings = ['bronze', 'silver', 'gold'],
            random = Math.floor(3*Math.random());

        self.rating_class = 'blue';

        // this is the marker point
        self.point = new google.maps.LatLng(parseFloat(self.lat), parseFloat(self.lng));
        locator.bounds.extend(self.point);

        // Create the marker for placement on the map
        self.marker = new google.maps.Marker({
            position: self.point,
            title: self.name,
            icon: new google.maps.MarkerImage('/wp-content/themes/arbesko/img/locator/'+self.rating_class+'SmallMarker.png'),
            shadow: new google.maps.MarkerImage(
                                        '/wp-content/themes/arbesko/img/locator/smallMarkerShadow.png',
                                        new google.maps.Size(52, 18),
                                        new google.maps.Point(0, 0),
                                        new google.maps.Point(19, 14)
                                    )
        });

        google.maps.event.addListener(self.marker, 'click', function() {
            self.target('map');
        });

        google.maps.event.addListener(self.marker, 'mouseover', function() {
            self.sidebarItem().mouseover();
        });

        google.maps.event.addListener(self.marker, 'mouseout', function() {
            self.sidebarItem().mouseout();
        });

        var infocontent = Array(
            '<div class="locationInfo">',
                '<span class="locName br">'+self.name+'</span>',
                '<span class="locAddress br">',
                    self.address+'<br/>'+self.zipcode+' '+self.city+' '+self.country,
                '</span>',
                '<span class="locContact br">'
        );

        if (self.phone) {
            infocontent.push('<span class="item br locPhone">'+self.phone+'</span>');
        }

        if (self.url) {
            infocontent.push('<span class="item br locURL"><a href="http://'+self.url+'">'+self.url+'</a></span>');
        }

        if (self.email) {
            infocontent.push('<span class="item br locEmail"><a href="mailto:'+self.email+'">Email</a></span>');
        }

        // Add in the lat/long
        infocontent.push('</span>');

        infocontent.push('<span class="item br locPosition"><strong>Lat:</strong> '+self.lat+'<br/><strong>Lng:</strong> '+self.lng+'</span>');

        // Create the infowindow for placement on the map, when a marker is clicked
        self.infowindow = new google.maps.InfoWindow({
            content: infocontent.join(""),
            position: self.point,
            pixelOffset: new google.maps.Size(0, -15) // Offset the infowindow by 15px to the top
        });

    },

    // Append the marker to the map
    addToMap: function() {
        var self = this;

        self.marker.setMap(self.map);
    },

    // Creates a sidebar module for the item, connected to the marker, etc..
    sidebarItem: function() {
        var self = this;

        if (self.sidebar) {
            return self.sidebar;
        }

        var li = $('<li/>').attr({ 'class': 'location', 'id': 'location-'+self.id }),
            name = $('<span/>').attr('class', 'locationName').html(self.name).appendTo(li),
            address = $('<span/>').attr('class', 'locationAddress').html(self.address+' <br/> '+self.zipcode+' '+self.city+' '+self.country).appendTo(li);

        li.addClass(self.rating_class);

        li.bind('click', function(event) {
            self.target();
        });

        self.sidebar = li;

        return li;
    },

    // This will "target" the store. Center the map and zoom on it, as well as 
    target: function(type) {
        var self = this;

        if (locator.targeted) {
            locator.targeted.infowindow.close();
        }

        locator.targeted = this;

        if (type != 'map') {
            self.map.panTo(self.point);
            self.map.setZoom(14);
        };

        // Open the infowinfow
        self.infowindow.open(self.map);
    }
};

for (var i=0; i < locations.length; i++) {
    var location = new Location(locations[i], self.map);
    self.locations.push(location);

    // Add the sidebar item
    self.location_ul.append(location.sidebarItem());

    // Add the map!
    location.addToMap();
};

# To read data from csv file
Dataset = pd.read_csv('Data.csv')

X = Dataset.iloc[:, :-1].values

# To calculate mean use imputer class
from sklearn.impute import SimpleImputer
imputer = SimpleImputer(missing_values=np.nan, strategy='mean')
imputer = imputer.fit(X[:, 1:3])
X[:, 1:3] = imputer.transform(X[:, 1:3])

using javascript:

here input element is used

<input type="text" id="fname" onkeyup="javascript:console.log(window.event.key)">

if you want to use multiline code use curly braces after javascript:

<input type="text" id="fname" onkeyup="javascript:{ console.log(window.event.key); alert('hello'); }">

You have referenced the image as a path on your computer (C:\etc\etc)......is it located there? You didn't answer what others have asked. I have taken your code, placed it in dreamweaver and it works apart from the image as I don't have that stored.

Check the location and then let us know.

I am adding this answer for completeness because the accepted answer by @amustill does not correctly solve the problem in Internet Explorer. Please see the comments in my original post for details. In addition, this solution does not require any plugins - only jQuery.

In essence, the code works by handling the mousewheel event. Each such event contains a wheelDelta equal to the number of px which it is going to move the scrollable area to. If this value is >0, then we are scrolling up. If the wheelDelta is <0 then we are scrolling down.

FireFox: FireFox uses DOMMouseScroll as the event, and populates originalEvent.detail, whose +/- is reversed from what is described above. It generally returns intervals of 3, while other browsers return scrolling in intervals of 120 (at least on my machine). To correct, we simply detect it and multiply by -40 to normalize.

@amustill's answer works by canceling the event if the <div>'s scrollable area is already either at the top or the bottom maximum position. However, Internet Explorer disregards the canceled event in situations where the delta is larger than the remaining scrollable space.

In other words, if you have a 200px tall <div> containing 500px of scrollable content, and the current scrollTop is 400, a mousewheel event which tells the browser to scroll 120px further will result in both the <div> and the <body> scrolling, because 400 + 120 > 500.

So - to solve the problem, we have to do something slightly different, as shown below:

The requisite jQuery code is:

$(document).on('DOMMouseScroll mousewheel', '.Scrollable', function(ev) {
    var $this = $(this),
        scrollTop = this.scrollTop,
        scrollHeight = this.scrollHeight,
        height = $this.innerHeight(),
        delta = (ev.type == 'DOMMouseScroll' ?
            ev.originalEvent.detail * -40 :
            ev.originalEvent.wheelDelta),
        up = delta > 0;

    var prevent = function() {
        ev.stopPropagation();
        ev.preventDefault();
        ev.returnValue = false;
        return false;
    }

    if (!up && -delta > scrollHeight - height - scrollTop) {
        // Scrolling down, but this will take us past the bottom.
        $this.scrollTop(scrollHeight);
        return prevent();
    } else if (up && delta > scrollTop) {
        // Scrolling up, but this will take us past the top.
        $this.scrollTop(0);
        return prevent();
    }
});

In essence, this code cancels any scrolling event which would create the unwanted edge condition, then uses jQuery to set the scrollTop of the <div> to either the maximum or minimum value, depending on which direction the mousewheel event was requesting.

Because the event is canceled entirely in either case, it never propagates to the body at all, and therefore solves the issue in IE, as well as all of the other browsers.

I have also put up a working example on jsFiddle.

Finally I solved this problem by changing compile 'com.google.guava:guava:18.0 ' to compile 'com.google.guava:guava-jdk5:17.0'

A while ago i wrote a detailed article about Hibernate key generators: http://blog.eyallupu.com/2011/01/hibernatejpa-identity-generators.html

Choosing the correct generator is a complicated task but it is important to try and get it right as soon as possible - a late migration might be a nightmare.

A little off topic but a good chance to raise a point usually overlooked which is sharing keys between applications (via API). Personally I always prefer surrogate keys and if I need to communicate my objects with other systems I don't expose my key (even though it is a surrogate one) – I use an additional ‘external key’. As a consultant I have seen more than once 'great' system integrations using object keys (the 'it is there let's just use it' approach) just to find a year or two later that one side has issues with the key range or something of the kind requiring a deep migration on the system exposing its internal keys. Exposing your key means exposing a fundamental aspect of your code to external constrains shouldn’t really be exposed to.

Change localhost:8080 to localhost:3306.

Here's a grid of card UI elements with spacing completed using flexible box:

I was frustrated with manually spacing the cards by manipulating padding and margins with iffy results. So here's the combinations of CSS attributes I've found very effective:

.card-container {_x000D_
  width: 100%;_x000D_
  height: 900px;_x000D_
  overflow-y: scroll;_x000D_
  max-width: inherit;_x000D_
  background-color: #ffffff;_x000D_
  _x000D_
  /*Here's the relevant flexbox stuff*/_x000D_
  display: flex;_x000D_
  flex-direction: row;_x000D_
  justify-content: center;_x000D_
  align-items: flex-start;_x000D_
  flex-wrap: wrap; _x000D_
}_x000D_
_x000D_
/*Supplementary styles for .card element*/_x000D_
.card {_x000D_
  width: 120px;_x000D_
  height: 120px;_x000D_
  background-color: #ffeb3b;_x000D_
  border-radius: 3px;_x000D_
  margin: 20px 10px 20px 10px;_x000D_
}

<section class="card-container">_x000D_
        <div class="card">_x000D_
_x000D_
        </div>_x000D_
        <div class="card">_x000D_
_x000D_
        </div>_x000D_
        <div class="card">_x000D_
_x000D_
        </div>_x000D_
        <div class="card">_x000D_
_x000D_
        </div>_x000D_
      </section>

Hope this helps folks, present and future.

I would think you would be better off excluding the characters you don't want with a regex. Trying to get every umlaut, accented e, hyphen, etc. will be pretty insane. Just exclude digits (but then what about a guy named "George Forman the 4th") and symbols you know you don't want like @#$%^ or what have you. But even then, using a regex will only guarantee that the input matches the regex, it will not tell you that it is a valid name

EDIT after clarifying that this is trying to prevent XSS: A regex on a name field is obviously not going to stop XSS on it's own. However, this article has a section on filtering that is a starting point if you want to go that route.

http://tldp.org/HOWTO/Secure-Programs-HOWTO/cross-site-malicious-content.html

s/[\<\>\"\'\%\;\(\)\&\+]//g;

This happened to me today because I had added a library directory while still in x86 mode, and accidently removed the inherited directories, making them hardcoded instead. Then after switching to x64, my VC++ Directories still read:

"...;$(VC_LibraryPath_x86);$(WindowsSDK_LibraryPath_x86);"

instead of the _x64.

If you're working on the heroku remote (default):

heroku git:remote -a [app name]

If you want to specify a different remote, use the -r argument:

heroku git:remote -a [app name] -r [remote] 

EDIT: thanks to ??????? ???????? For pointing it out that there's no need to delete the old remote.

Robert Love's book LINUX System Programming 2nd Edition, specifically addresses your question at the beginning of Chapter 11, pg 363:

The important aspect of a monotonic time source is NOT the current value, but the guarantee that the time source is strictly linearly increasing, and thus useful for calculating the difference in time between two samplings

That said, I believe he is assuming the processes are running on the same instance of an OS, so you might want to have a periodic calibration running to be able to estimate drift.

Well, there's always the brute force method:

<li><pre>    The lazy dog.</pre></li>
<li><pre>AND The lazy cat.</pre></li>
<li><pre>OR  The active goldfish.</pre></li>

Or is that what you meant by "padding" the text? That's an ambiguous work in this context.

This sounds kind of like a homework question. I hope you're not trying to get us to do your homework for you?

It is not necessary.

No warning is generated if the variable does not exist. That means empty() is essentially the concise equivalent to !isset($var) || $var == false.

php.net

When I need default values its usually for new records before the new action's view is rendered. The following method will set the default values for only new records so that they are available when rendering forms. before_save and before_create are too late and will not work if you want default values to show up in input fields.

after_initialize do
  if self.new_record?
    # values will be available for new record forms.
    self.status = 'P'
    self.featured = true
  end
end

One (possibly small) issue I have noted with the solutions so far is that they all seem to require a function call to process the comparison. This means that the query engine will need to do a full table scan to seek the rows you are after - and be unable to use an index. If the table is not going to get particularly large, this probably won't have any adverse affects (and you can happily ignore this answer).

If, on the other hand, the table could get quite large, the performance of the query could suffer.

I know you stated that you do not wish to compare the date part - but is there an actual date being stored in the datetime column, or are you using it to store only the time? If the latter, you can use a simple comparison operator, and this will reduce both CPU usage, and allow the query engine to use statistics and indexes (if present) to optimise the query.

If, however, the datetime column is being used to store both the date and time of the event, this obviously won't work. In this case if you can modify the app and the table structure, separate the date and time into two separate datetime columns, or create a indexed view that selects all the (relevant) columns of the source table, and a further column that contains the time element you wish to search for (use any of the previous answers to compute this) - and alter the app to query the view instead.

Standard class java.util.ArrayList is resizable array, growing when new elements added.

Swift 5.2, UIView+Extension

extension UIView {
    public func addViewBorder(borderColor:CGColor,borderWith:CGFloat,borderCornerRadius:CGFloat){
        self.layer.borderWidth = borderWith
        self.layer.borderColor = borderColor
        self.layer.cornerRadius = borderCornerRadius

    }
}

You used this extension;

yourView.addViewBorder(borderColor: #colorLiteral(red: 0.6, green: 0.6, blue: 0.6, alpha: 1), borderWith: 1.0, borderCornerRadius: 20)

This is the shortest I could get using Core Java.

List<Integer> makeSequence(int begin, int end) {
  List<Integer> ret = new ArrayList(end - begin + 1);

  for(int i = begin; i <= end; i++, ret.add(i));

  return ret;  
}

Got this error also....

it occurs when save to filepath contains invalid characters, in my case:

path = "C:/somefolder/anotherfolder\file.xls";

Note the existence of both \ and /

*Also may occur if trying to save to directory which doesn't already exist.

Performance is based on the amount of data you are executing on...

If it is less data around 20k. JOIN works better.

If the data is more like 100k+ then IN works better.

If you do not need the data from the other table, IN is good, But it is alwys better to go for EXISTS.

All these criterias I tested and the tables have proper indexes.

You can simply use ORS dynamically like this:

awk '{ORS="" ; print($1" "$2" "$3" "$4" "$5" "); ORS="\n"; print($6-=2*$6)}' file_in > file_out

I recently moved a site using SimplePie (http://simplepie.org/) from a server that was using PHP 5.2.17 to one that is using PHP 5.3.2. It was after this move that I began receiving a list of error messages such as this one:

Deprecated: Assigning the return value of new by reference is deprecated in .../php/simplepie.inc on line 738

After reviewing several discussions of this issue, I cleared things up by replacing all the instances of =& new with = new in the simplepie.inc file.

I'm not experienced enough to know if this will work in all instances where these error messages are received but it worked in this particular case and it may be worth trying.

you can use program like tcpview from sysinternal. I guess it can help you a lot on both monitoring and killing unwanted connection.

In addition to Sophie's answer, I also have found a use in sending in child component types, doing something like this:

var ListView = React.createClass({
    render: function() {
        var items = this.props.data.map(function(item) {
            return this.props.delegate({data:item});
        }.bind(this));
        return <ul>{items}</ul>;
    }
});

var ItemDelegate = React.createClass({
    render: function() {
        return <li>{this.props.data}</li>
    }
});

var Wrapper = React.createClass({    
    render: function() {
        return <ListView delegate={ItemDelegate} data={someListOfData} />
    }
});

You just need to replace all image network paths to byte strings in stored Encoded HTML string. For this you required HtmlAgilityPack to convert Html string to Html document. https://www.nuget.org/packages/HtmlAgilityPack

Find Below code to convert each image src network path(or local path) to byte sting. It will definitely display all images with network path(or local path) in IE,chrome and firefox.

string encodedHtmlString = Emailmodel.DtEmailFields.Rows[0]["Body"].ToString();

// Decode the encoded string.
StringWriter myWriter = new StringWriter();
HttpUtility.HtmlDecode(encodedHtmlString, myWriter);
string DecodedHtmlString = myWriter.ToString();

//find and replace each img src with byte string
HtmlDocument document = new HtmlDocument();
document.LoadHtml(DecodedHtmlString);
document.DocumentNode.Descendants("img")
    .Where(e =>
    {
        string src = e.GetAttributeValue("src", null) ?? "";
        return !string.IsNullOrEmpty(src);//&& src.StartsWith("data:image");
    })
    .ToList()
    .ForEach(x =>
        {
        string currentSrcValue = x.GetAttributeValue("src", null);                                
        string filePath = Path.GetDirectoryName(currentSrcValue) + "\\";
        string filename = Path.GetFileName(currentSrcValue);
        string contenttype = "image/" + Path.GetExtension(filename).Replace(".", "");
        FileStream fs = new FileStream(filePath + filename, FileMode.Open, FileAccess.Read);
        BinaryReader br = new BinaryReader(fs);
        Byte[] bytes = br.ReadBytes((Int32)fs.Length);
        br.Close();
        fs.Close();
        x.SetAttributeValue("src", "data:" + contenttype + ";base64," + Convert.ToBase64String(bytes));                                
    });

string result = document.DocumentNode.OuterHtml;
//Encode HTML string
string myEncodedString = HttpUtility.HtmlEncode(result);

Emailmodel.DtEmailFields.Rows[0]["Body"] = myEncodedString;

Under some conditions this may suffice.

I had a decimal value of SubCent = 0.0099999999999999999999999999M that tends to format to |SubCent:0.010000| via string.Format("{0:N6}", SubCent ); and many other formatting choices.

My requirement was not to round the SubCent value, but not log every digit either.

The following met my requirement:

string.Format("SubCent:{0}|", 
    SubCent.ToString("N10", CultureInfo.InvariantCulture).Substring(0, 9));

Which returns the string : |SubCent:0.0099999|

To accommodate the value having an integer part the following is a start.

tmpValFmt = 567890.0099999933999229999999M.ToString("0.0000000000000000000000000000");
decPt = tmpValFmt.LastIndexOf(".");
if (decPt < 0) decPt = 0;
valFmt4 = string.Format("{0}", tmpValFmt.Substring(0, decPt + 9));

Which returns the string :

valFmt4 = "567890.00999999"

My server is Apache, what I did to fix 404 when refreshing or deep linking is very simple. Just add one line in apache vhost config:

ErrorDocument 404 /index.html

So that any 404 error will be redirected to index.html, which is what angular2 routing wants.

The whole vhost file example:

<VirtualHost *:80>
  ServerName fenz.niwa.local
  DirectoryIndex index.html
  ErrorDocument 404 /index.html

  DocumentRoot "/Users/zhoum/Documents/workspace/fire/fire_service/dist"
  ErrorLog /Users/zhoum/Documents/workspace/fire/fire_service/logs/fenz.error.log
  CustomLog /Users/zhoum/Documents/workspace/fire/fire_service/logs/fenz.access.log combined

  <Directory "/Users/zhoum/Documents/workspace/fire/fire_service/dist">
    AllowOverride All
    Options Indexes FollowSymLinks
    #Order allow,deny
    #Allow from All
    Require all granted
  </Directory>

  Header set Access-Control-Allow-Origin "*"
  Header set Access-Control-Allow-Methods "GET, POST"
  Header set Access-Control-Allow-Credentials "true"
  Header set Access-Control-Allow-Headers "Accept-Encoding"
</VirtualHost>

No matter what server you are using, I think the whole point is finding out the ways to config the server to redirect 404 to your index.html.

I've approached this in a different way. I've created a function which simply returns true or false.. Usage:

If FieldContains("A;B;C",MyFieldVariable,True|False) then

.. Do Something

End If

Public Function FieldContains(Searchfor As String, SearchField As String, AllowNulls As Boolean) As Boolean

       If AllowNulls And Len(SearchField) = 0 Then Return True

        For Each strSearchFor As String In Searchfor.Split(";")
            If UCase(SearchField) = UCase(strSearchFor) Then
                Return True
            End If
        Next

        Return False

    End Function

NestedCaveats solution worked for me.

Imported my .dll files before importing torch and gpytorch, and all went smoothly.

So I just want to add that its not just importing pytorch but I can confirm that torch and gpytorch have this issue as well. I'd assume it covers any other torch-related libraries.

Here is another solution using Lodash:

var _ = require('lodash');

var result1 = [
    {id:1, name:'Sandra', type:'user', username:'sandra'},
    {id:2, name:'John', type:'admin', username:'johnny2'},
    {id:3, name:'Peter', type:'user', username:'pete'},
    {id:4, name:'Bobby', type:'user', username:'be_bob'}
];

var result2 = [
    {id:2, name:'John', email:'[email protected]'},
    {id:4, name:'Bobby', email:'[email protected]'}
];

// filter all those that do not match
var result = types1.filter(function(o1){
    // if match found return false
    return _.findIndex(types2, {'id': o1.id, 'name': o1.name}) !== -1 ? false : true;
});

console.log(result);

Just remove class full from <html> and add it to <body> tag. Then set style background-color:transparent !important; for the Jumbotron div (as Amit Joki said in his answer).

 public void updateRecord(ContactModel contact) {
    database = this.getReadableDatabase();
    ContentValues contentValues = new ContentValues();
    contentValues.put(COLUMN_FIRST_NAME, contact.getFirstName());
    contentValues.put(COLUMN_LAST_NAME, contact.getLastName());
    contentValues.put(COLUMN_NUMBER,contact.getNumber());
    contentValues.put(COLUMN_BALANCE,contact.getBalance());
    database.update(TABLE_NAME, contentValues, COLUMN_ID + " = ?", new String[]{contact.getID()});
    database.close();
}

I've had the same problem; my MAIL_ENCRYPTION was tls on mail.php but it was null on .env file.
So I changed null to tls and it worked!

You have to tell it which component you want to import by explicitly giving the class name..in your case it's Map

import Map from './Map';

class App extends Component{
    /*your code here...*/
}

Check out Javascript's Array API for details on the exact syntax for Array methods. Modifying your code to use the correct syntax would be:

var array = [];
calendars.forEach(function(item) {
    array.push(item.id);
});

console.log(array);

You can also use the map() method to generate an Array filled with the results of calling the specified function on each element. Something like:

var array = calendars.map(function(item) {
    return item.id;
});

console.log(array);

And, since ECMAScript 2015 has been released, you may start seeing examples using let or const instead of var and the => syntax for creating functions. The following is equivalent to the previous example (except it may not be supported in older node versions):

let array = calendars.map(item => item.id);
console.log(array);

>>> import random
>>> d = dict(Venezuela = 1, Spain = 2, USA = 3, Italy = 4)
>>> random.choice(d.keys())
'Venezuela'
>>> random.choice(d.keys())
'USA'

By calling random.choice on the keys of the dictionary (the countries).

Another alternative to see popular android resolutions or aspect ratios is Unity statistics:

LATEST UNITY STATISTICS (on 2019.06 return http503) web arhive

Top on 2017-01:

Display Resolutions:

• 1280 x 720: 28.9%
• 1920 x 1080: 21.4%
• 800 x 480: 10.3%
• 854 x 480: 9.7%
• 960 x 540: 8.9%
• 1024 x 600: 7.8%
• 1280 x 800: 5.0%
• 2560 x 1440: 2.4%
• 480 x 320: 1.2%
• 1920 x 1200: 0.8%
• 1024 x 768: 0.8%

Display Aspect Ratios:

• 16:9: 72.4%
• 5:3: 18.2%
• 16:10: 6.2%
• 4:3: 1.7%
• 3:2: 1.2%
• 5:4: 0.1%

Alternatively:

var keys = new List<string>(dicNumber.Keys);

Are you redirecting it back after the post ? I had this issue and I was able to solve it by returning the same view instead of using the Redirect::back().

Use this return view()->with(), instead of Redirect::back().

For your interest, to do the same with double

double doubleVal = 1.745;
double doubleVal2 = 0.745;
doubleVal = Math.round(doubleVal * 100 + 0.005) / 100.0;
doubleVal2 = Math.round(doubleVal2 * 100 + 0.005) / 100.0;
System.out.println("bdTest: " + doubleVal); //1.75
System.out.println("bdTest1: " + doubleVal2);//0.75

or just

double doubleVal = 1.745;
double doubleVal2 = 0.745;
System.out.printf("bdTest: %.2f%n",  doubleVal);
System.out.printf("bdTest1: %.2f%n",  doubleVal2);

both print

bdTest: 1.75
bdTest1: 0.75

I prefer to keep code as simple as possible. ;)

As @mshutov notes, you need to add a little more to ensure that a half value always rounds up. This is because numbers like 265.335 are a little less than they appear.

The code for the confirmation dialogue can be written shorter this way:

$scope.$on('$locationChangeStart', function( event ) {
    var answer = confirm("Are you sure you want to leave this page?")
    if (!answer) {
        event.preventDefault();
    }
});

You can create a new alias in Terminal:

nano ~/.bash_profile

Copy this line and paste it into the editor:

alias subl='open -a "Sublime Text"'

Hit control + x, then y, then enter to save and close it.

Close all Terminal windows and open it up again.

That's it, you can now use subl filename or subl .

It is good to save all the private images and docs in storage directory then you will have full control over file ether you can allow certain type of user to access the file or restrict.

Make a route/docs and point to any controller method:

public function docs() {

    //custom logic

    //check if user is logged in or user have permission to download this file etc

    return response()->download(
        storage_path('app/users/documents/4YPa0bl0L01ey2jO2CTVzlfuBcrNyHE2TV8xakPk.png'), 
        'filename.png',
        ['Content-Type' => 'image/png']
    );
}

When you will hit localhost:8000/docs file will be downloaded if any exists.

The file must be in root/storage/app/users/documents directory according to above code, this was tested on Laravel 5.4.

This works for me: View view is your editText, spinner...etc. And int drawable is your drawable route example (R.drawable.yourDrawable)

 public void verifyDrawable (View view, int drawable){

        int sdk = Build.VERSION.SDK_INT;

        if(sdk < Build.VERSION_CODES.JELLY_BEAN) {
            view.setBackgroundDrawable(
                    ContextCompat.getDrawable(getContext(),drawable));
        } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
            view.setBackground(getResources().getDrawable(drawable));
        }    
    }

@jogesh_pi answer is a good solution, i've created a example here http://jsfiddle.net/pqgaS/5/, check it, hope this help

<div id="listtableWrapperScroll">
    <table id="listtable">
        <tr>
            <td>Data Data</td>
            <td>Data Data</td>
            <td>Data Data</td>                
        </tr>
    </table>
</div>

#listtableWrapperScroll{
    height:100px;
    width:460px;
    overflow-y:scroll;
    border:1px solid #777777;
    background:#FFFFF2;
}
#listtableWrapperScroll #listtable{
    width:440px;       
}
#listtableWrapperScroll #listtable tr td{
    border-bottom:1px dashed #444;
}

I also had this problem today, and deleting files org.eclipse.jst.server.tomcat.core.prefs and org.eclipse.wst.server.core.prefs didn't work.

Finally I found it's permission issue:

By default <apache-tomcat-version>/conf/* can be read only by owner, after I made it readable for all, it works! So run this command:

chmod a+r <apache-tomcat-version>/conf/*

Here is the link where I found the root cause:

http://www.thecodingforums.com/threads/eclipse-cannot-create-tomcat-server.953960/#post-5058434

Alongside the classic causes, mentioned elsewhere:

• Make sure you've called setContentView() before findViewById()
• Make sure that the id you want is in the view or layout you've given to setContentView()
• Make sure that the id isn't accidentally duplicated in different layouts

There is one I have found for custom views in standard layouts, which goes against the documentation:

In theory you can create a custom view and add it to a layout (see here). However, I have found that in such situations, sometimes the id attribute works for all the views in the layout except the custom ones. The solution I use is:

1. Replace each custom view with a FrameLayout with the same layout properties as you would like the custom view to have. Give it an appropriate id, say frame_for_custom_view.

2. In onCreate:

   setContentView(R.layout.my_layout);
   FrameView fv = findViewById(R.id.frame_for_custom_layout);
   MyCustomView cv = new MyCustomView(context);
   fv.addView(cv);
   

   which puts the custom view in the frame.

I had the same issue in Vagrant.

I have used sudo to run the command to install.

sudo npm install -g grunt-cli

It worked for me.

    XML CODE FOR TWO BUTTONS  
     <Button
            android:id="@+id/btn_save"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="SAVE"
            android:onClick="process"
            />
        <Button
            android:id="@+id/btn_show"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="SHOW"
            android:onClick="process"/> 

  Java Code
 <pre> public void process(View view) {
            switch (view.getId()){
                case R.id.btn_save:
                  //add your own code
                    break;
                case R.id.btn_show:
                   //add your own code
                    break;
            }</pre>

Since iOS 11, you can use the native framework called PDFKit for displaying and manipulating PDFs.

After importing PDFKit, you should initialize a PDFView with a local or a remote URL and display it in your view.

if let url = Bundle.main.url(forResource: "example", withExtension: "pdf") {
    let pdfView = PDFView(frame: view.frame)
    pdfView.document = PDFDocument(url: url)
    view.addSubview(pdfView)
}

Read more about PDFKit in the Apple Developer documentation.

You can find a solution on SuperUser :

Chrome cookies folder in Windows 7:-

C:\Users\your_username\AppData\Local\Google\Chrome\User Data\Default\
You'll need a program like SQLite Database Browser to read it.

For Mac OS X, the file is located at :-
~/Library/Application Support/Google/Chrome/Default/Cookies

I think Object.keys is the best solution to this problem. For anyone that comes across this answer and is trying to find out why Object.keys is giving them ['0', '1'] instead of ['key1', 'key2'], a cautionary tale - beware the difference between "of" and "in":

I was already using Object.keys, something similar to this:

interface demo {
    key: string;
    value: string;
}

createDemo(mydemo: any): Array<demo> {
    const tempdemo: Array<demo> = [];

    // Caution: use "of" and not "in"
    for (const key of Object.keys(mydemo)) {
        tempdemo.push(
            { key: key, value: mydemo[key]}
        );
    }

    return tempdemo;
}

However, instead of

for (const key OF Object.keys(mydemo)) {

I had inadvertently wrote

for (const key IN Object.keys(mydemo)) {

which "worked" perfectly fine without any error and returned

[{key: '0', value: undefined}, {key: '1', value: undefined}]

That cost me about 2 hours googling and cursing..

(slaps forehead)

This is a variation to Kevin Edwards's answer using string replacement. The basic pattern is:

IF "%PATH:new_path=%" == "%PATH%" PATH=%PATH%;new_path

For example:

IF "%PATH:C:\Scripts=%" == "%PATH%" PATH=%PATH%;C:\Scripts

In a nutshell, we make a conditional test where we attempt to remove/replace new_path from our PATH environment variable. If new_path doesn't exist the condition succeeds and the new_path will be appended to PATH for the first time. If new_path already exists then the condition fails and we will not add new_path a second time.

del statement does not delete an instance, it merely deletes a name.

When you do del i, you are deleting just the name i - but the instance is still bound to some other name, so it won't be Garbage-Collected.

If you want to release memory, your dataframes has to be Garbage-Collected, i.e. delete all references to them.

If you created your dateframes dynamically to list, then removing that list will trigger Garbage Collection.

>>> lst = [pd.DataFrame(), pd.DataFrame(), pd.DataFrame()]
>>> del lst     # memory is released

If you created some variables, you have to delete them all.

>>> a, b, c = pd.DataFrame(), pd.DataFrame(), pd.DataFrame()
>>> lst = [a, b, c]
>>> del a, b, c # dfs still in list
>>> del lst     # memory release now

I think scrollViewDidEndDecelerating is the one you want. Its UIScrollViewDelegates optional method:

- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView

Tells the delegate that the scroll view has ended decelerating the scrolling movement.

UIScrollViewDelegate documentation

In a php section before the HTML section, use sprinf() to create a constant string from the variables:

$mystuff = sprinf("My name is %s and my mother's name is %s","Suzy","Caroline");

Then in the HTML section you can do whatever you like, such as:

<p>$mystuff</p> 

Easiest way to do this:

cd C:\Users\%User%\AppData\Local\Programs\Python\Python37\Scripts> 
pip install pythonds 

The short answer is that you can't do it using JavaScript alone. You'd need a server-side handler to connect with the SMTP server to actually send the mail. There are many simple mail scripts online, such as this one for PHP:

Simple PHP mail script

Using a script like that, you'd POST the contents of your web form to the script, using a function like this:

jQuery.post

And then the script would take those values, plus a username and password for the mail server, and connect to the server to send the mail.

If you need a specific exit status, Ansible provides a way to do that via callback plugins.

Example. It's a very good option if you need a 100% accurate exit status.

If not, you can always use the Debug Module, which is the standard for this cases of use.

Cheers

wget -O- http://www.example.com/cronit.php >> /dev/null

This means send the file to stdout, and send stdout to /dev/null

The scripts mentioned in previous answers, like:

$("body, html").animate({
    scrollTop: $(document).height()
}, 400)

or

$(window).scrollTop($(document).height());

will not work in Chrome and will be jumpy in Safari in case html tag in CSS has overflow: auto; property set. It took me nearly an hour to figure out.

Another option I have googled, but contains several replace ...

SELECT REPLACE(REPLACE(REPLACE(CONVERT(VARCHAR(19), CONVERT(DATETIME, getdate(), 112), 126), '-', ''), 'T', ''), ':', '') 

If self could be nil in the closure use [weak self].

If self will never be nil in the closure use [unowned self].

If it's crashing when you use [unowned self] I would guess that self is nil at some point in that closure, which is why you had to go with [weak self] instead.

I really liked the whole section from the manual on using strong, weak, and unowned in closures:

https://developer.apple.com/library/content/documentation/Swift/Conceptual/Swift_Programming_Language/AutomaticReferenceCounting.html

Note: I used the term closure instead of block which is the newer Swift term:

Difference between block (Objective C) and closure (Swift) in ios

You are not indicating what to include in the archive.

Go one level outside your folder and try:

sudo tar -cvjSf folder.tar.bz2 folder

Or from the same folder try

sudo tar -cvjSf folder.tar.bz2 *

Cheers!

Prerequisite:

Your APK needs to be signed by system as correctly pointed out earlier. One way to achieve that is building the AOSP image yourself and adding the source code into the build.

Code:

Once installed as a system app, you can use the package manager methods to install and uninstall an APK as following:

Install:

public boolean install(final String apkPath, final Context context) {
    Log.d(TAG, "Installing apk at " + apkPath);
    try {
        final Uri apkUri = Uri.fromFile(new File(apkPath));
        final String installerPackageName = "MyInstaller";
        context.getPackageManager().installPackage(apkUri, installObserver, PackageManager.INSTALL_REPLACE_EXISTING, installerPackageName);
        return true;
    } catch (Exception e) {
        e.printStackTrace();
        return false;
    }
}

Uninstall:

public boolean uninstall(final String packageName, final Context context) {
    Log.d(TAG, "Uninstalling package " + packageName);
    try {
        context.getPackageManager().deletePackage(packageName, deleteObserver, PackageManager.DELETE_ALL_USERS);
        return true;
    } catch (Exception e) {
        e.printStackTrace();
        return false;
    }
}

To have a callback once your APK is installed/uninstalled you can use this:

/**
 * Callback after a package was installed be it success or failure.
 */
private class InstallObserver implements IPackageInstallObserver {

    @Override
    public void packageInstalled(String packageName, int returnCode) throws RemoteException {

        if (packageName != null) {
            Log.d(TAG, "Successfully installed package " + packageName);
            callback.onAppInstalled(true, packageName);
        } else {
            Log.e(TAG, "Failed to install package.");
            callback.onAppInstalled(false, null);
        }
    }

    @Override
    public IBinder asBinder() {
        return null;
    }
}

/**
 * Callback after a package was deleted be it success or failure.
 */
private class DeleteObserver implements IPackageDeleteObserver {

    @Override
    public void packageDeleted(String packageName, int returnCode) throws RemoteException {
        if (packageName != null) {
            Log.d(TAG, "Successfully uninstalled package " + packageName);
            callback.onAppUninstalled(true, packageName);
        } else {
            Log.e(TAG, "Failed to uninstall package.");
            callback.onAppUninstalled(false, null);
        }
    }

    @Override
    public IBinder asBinder() {
        return null;
    }
}

/**
 * Callback to give the flow back to the calling class.
 */
public interface InstallerCallback {
    void onAppInstalled(final boolean success, final String packageName);
    void onAppUninstalled(final boolean success, final String packageName);
}

===> Tested on Android 8.1 and worked well.

If you want to use class, you can do this.

Helper.js

  function x(){}

  function y(){}

  export default class Helper{

    static x(){ x(); }

    static y(){ y(); }

  }

App.js

import Helper from 'helper.js';

/****/

Helper.x

From Wikipedia:

Applications implementing common services often use specifically reserved, well-known port numbers for receiving service requests from client hosts. This process is known as listening and involves the receipt of a request on the well-known port and reestablishing one-to-one server-client communications on another private port, so that other clients may also contact the well-known service port. The well-known ports are defined by convention overseen by the Internet Assigned Numbers Authority (IANA).

Source

So as others mentioned, it's a convention.

Sign-off is a requirement for getting patches into the Linux kernel and a few other projects, but most projects don't actually use it.

It was introduced in the wake of the SCO lawsuit, (and other accusations of copyright infringement from SCO, most of which they never actually took to court), as a Developers Certificate of Origin. It is used to say that you certify that you have created the patch in question, or that you certify that to the best of your knowledge, it was created under an appropriate open-source license, or that it has been provided to you by someone else under those terms. This can help establish a chain of people who take responsibility for the copyright status of the code in question, to help ensure that copyrighted code not released under an appropriate free software (open source) license is not included in the kernel.

The %history command is awesome, but unfortunately it won't let you save things that were %paste 'd into the sesh. To do that I think you have to do %logstart at the beginning (although I haven't confirmed this works).

What I like to do is

%history -o -n -p -f filename.txt

which will save the output, line numbers, and '>>>' before each input (o, n, and p options). See the docs for %history here.

Also you can try to formulate your answer in the form of a SELECT CASE Statement. You can then later create simple if then's that use your results if needed as you have narrowed down the possibilities.

SELECT @Result =   
CASE @inputParam   
WHEN 1 THEN 1   
WHEN 2 THEN 2   
WHEN 3 THEN 1   
ELSE 4   
END  

IF @Result = 1   
BEGIN  
...  
END  

IF @Result = 2   
BEGIN   
....  
END  

IF @Result = 4   
BEGIN   
//Error handling code   
END   

            Map<String, String> params = new HashMap<String, String>();

            //** Temp array
            List<String[]> tmpArray = new ArrayList<>();
            tmpArray.add(new String[]{"b001","book1"}); 
            tmpArray.add(new String[]{"b002","book2"}); 

            //** Json Array Example
            JSONArray jrrM = new JSONArray();
            for(int i=0; i<tmpArray.size(); i++){
                JSONArray jrr = new JSONArray();
                jrr.put(tmpArray.get(i)[0]);
                jrr.put(tmpArray.get(i)[1]);
                jrrM.put(jrr);
            }

           //Json Object Example
           JSONObject jsonObj = new JSONObject();
            try {
                jsonObj.put("plno","000000001");                   
                jsonObj.put("rows", jrrM);

            }catch (JSONException ex){
                ex.printStackTrace();
            }   


            // Bundles them
            params.put("user", "guest");
            params.put("tb", "book_store");
            params.put("action","save");
            params.put("data", jsonObj.toString());

           // Now you can send them to the server.

As none of these approaches worked for me, I simply did a:

mysqldump [...] | grep -v "LOCK TABLE" | mysql [...]

It will exclude both LOCK TABLE <x> and UNLOCK TABLES commands.

Note: Hopefully your data doesn't contain that string in it!

I created a simple extension method that does not need a check on Enum types:

public static bool HasAnyFlag(this Enum value, Enum flags)
{
    return
        value != null && ((Convert.ToInt32(value) & Convert.ToInt32(flags)) != 0);
}

It also works on nullable enums. The standard HasFlag method does not, so I created an extension to cover that too.

public static bool HasFlag(this Enum value, Enum flags)
{
    int f = Convert.ToInt32(flags);

    return
        value != null && ((Convert.ToInt32(value) & f) == f);
}

A simple test:

[Flags]
enum Option
{
    None = 0x00,
    One = 0x01,
    Two = 0x02,
    Three = One | Two,
    Four = 0x04
}

[TestMethod]
public void HasAnyFlag()
{
    Option o1 = Option.One;
    Assert.AreEqual(true, o1.HasAnyFlag(Option.Three));
    Assert.AreEqual(false, o1.HasFlag(Option.Three));

    o1 |= Option.Two;
    Assert.AreEqual(true, o1.HasAnyFlag(Option.Three));
    Assert.AreEqual(true, o1.HasFlag(Option.Three));
}

[TestMethod]
public void HasAnyFlag_NullableEnum()
{
    Option? o1 = Option.One;
    Assert.AreEqual(true, o1.HasAnyFlag(Option.Three));
    Assert.AreEqual(false, o1.HasFlag(Option.Three));

    o1 |= Option.Two;
    Assert.AreEqual(true, o1.HasAnyFlag(Option.Three));
    Assert.AreEqual(true, o1.HasFlag(Option.Three));
}

Enjoy!

You need to override Activity.onActivityResult()

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);

if (resultCode == RESULT_CODE_ONE) {


   String a = data.getStringExtra("RESULT_CODE_ONE");

}
else if(resultCode == RESULT_CODE_TWO){

   // b was clicked

}
else{

}
}

try this

json = $.grep(newcurrPayment.paymentTypeInsert, function (el, idx) { return el.FirstName == "Test1" }, true)

There are two different types of export, named and default. You can have multiple named exports per module but only one default export. Each type corresponds to one of the above. Source: MDN

Named Export

export class NamedExport1 { }

export class NamedExport2 { }

// Import class
import { NamedExport1 } from 'path-to-file'
import { NamedExport2 } from 'path-to-file'

// OR you can import all at once
import * as namedExports from 'path-to-file'

Default Export

export default class DefaultExport1 { }

// Import class
import DefaultExport1 from 'path-to-file' // No curly braces - {}

// You can use a different name for the default import

import Foo from 'path-to-file' // This will assign any default export to Foo.

I've got another idea. What if you create this table-based function:

CREATE FUNCTION tbfSelectFromView
(   
    -- Add the parameters for the function here
    @SessionGUID UNIQUEIDENTIFIER
)
RETURNS TABLE 
AS
RETURN 
(
    SELECT *
    FROM Report_Opener
    WHERE SessionGUID = @SessionGUID
    ORDER BY CurrencyTypeOrder, Rank
)
GO

And then selected from it using the following statement (even putting this in your SP):

SELECT *
FROM tbfSelectFromView(@SessionGUID)

It looks like what's happening (which everybody has already commented on) is that SQL Server just makes an assumption somewhere that's wrong, and maybe this will force it to correct the assumption. I hate to add the extra step, but I'm not sure what else might be causing it.

Maven always checks your local repository first, however,your dependency needs to be installed in your repo for maven to find it.

Run mvn install in your dependency module first, and then build your dependent module.

I think this should be:

$('.home').click(function() {
     $(this).css('background', 'url(images/tabs3.png)');
 });

and remove this:

<div class="home" onclick="function()">
     //-----------^^^^^^^^^^^^^^^^^^^^---------no need for this

You have to make sure you have a correct path to your image.

If you have same error handling logic for different method handlers, then you would end up with lots of handlers with following code pattern:

if (validation.hasErrors()) {
  // do error handling
}
else {
  // do the actual business logic
}

Suppose you're creating RESTful services and want to return 400 Bad Request along with error messages for every validation error case. Then, the error handling part would be same for every single REST endpoint that requires validation. Repeating that very same logic in every single handler is not so DRYish!

One way to solve this problem is to drop the immediate BindingResult after each To-Be-Validated bean. Now, your handler would be like this:

@RequestMapping(...)
public Something doStuff(@Valid Somebean bean) { 
    // do the actual business logic
    // Just the else part!
}

This way, if the bound bean was not valid, a MethodArgumentNotValidException will be thrown by Spring. You can define a ControllerAdvice that handles this exception with that same error handling logic:

@ControllerAdvice
public class ErrorHandlingControllerAdvice {
    @ExceptionHandler(MethodArgumentNotValidException.class)
    public SomeErrorBean handleValidationError(MethodArgumentNotValidException ex) {
        // do error handling
        // Just the if part!
    }
}

You still can examine the underlying BindingResult using getBindingResult method of MethodArgumentNotValidException.

In PostgreSQL, the default limit is 63 characters. Because index names must be unique it's nice to have a little convention. I use (I tweaked the example to explain more complex constructions):

def change
  add_index :studies, [:professor_id, :user_id], name: :idx_study_professor_user
end

The normal index would have been:

:index_studies_on_professor_id_and_user_id

The logic would be:

• index becomes idx
• Singular table name
• No joining words
• No _id
• Alphabetical order

Which usually does the job.

I am currently working on Office automation and have stumbled across a solution for this that works every time for me. It is simple and does not involve killing any processes.

It seems that by merely looping through the current active processes, and in any way 'accessing' an open Excel process, any stray hanging instance of Excel will be removed. The below code simply checks for processes where the name is 'Excel', then writes the MainWindowTitle property of the process to a string. This 'interaction' with the process seems to make Windows catch up and abort the frozen instance of Excel.

I run the below method just before the add-in which I am developing quits, as it fires it unloading event. It removes any hanging instances of Excel every time. In all honesty I am not entirely sure why this works, but it works well for me and could be placed at the end of any Excel application without having to worry about double dots, Marshal.ReleaseComObject, nor killing processes. I would be very interested in any suggestions as to why this is effective.

public static void SweepExcelProcesses()
{           
            if (Process.GetProcessesByName("EXCEL").Length != 0)
            {
                Process[] processes = Process.GetProcesses();
                foreach (Process process in processes)
                {
                    if (process.ProcessName.ToString() == "excel")
                    {                           
                        string title = process.MainWindowTitle;
                    }
                }
            }
}

The DFS-based variants with back edges will find cycles indeed, but in many cases it will NOT be minimal cycles. In general DFS gives you the flag that there is a cycle but it is not good enough to actually find cycles. For example, imagine 5 different cycles sharing two edges. There is no simple way to identify cycles using just DFS (including backtracking variants).

Johnson's algorithm is indeed gives all unique simple cycles and has good time and space complexity.

But if you want to just find MINIMAL cycles (meaning that there may be more then one cycle going through any vertex and we are interested in finding minimal ones) AND your graph is not very large, you can try to use the simple method below. It is VERY simple but rather slow compared to Johnson's.

So, one of the absolutely easiest way to find MINIMAL cycles is to use Floyd's algorithm to find minimal paths between all the vertices using adjacency matrix. This algorithm is nowhere near as optimal as Johnson's, but it is so simple and its inner loop is so tight that for smaller graphs (<=50-100 nodes) it absolutely makes sense to use it. Time complexity is O(n^3), space complexity O(n^2) if you use parent tracking and O(1) if you don't. First of all let's find the answer to the question if there is a cycle. The algorithm is dead-simple. Below is snippet in Scala.

  val NO_EDGE = Integer.MAX_VALUE / 2

  def shortestPath(weights: Array[Array[Int]]) = {
    for (k <- weights.indices;
         i <- weights.indices;
         j <- weights.indices) {
      val throughK = weights(i)(k) + weights(k)(j)
      if (throughK < weights(i)(j)) {
        weights(i)(j) = throughK
      }
    }
  }

Originally this algorithm operates on weighted-edge graph to find all shortest paths between all pairs of nodes (hence the weights argument). For it to work correctly you need to provide 1 if there is a directed edge between the nodes or NO_EDGE otherwise. After algorithm executes, you can check the main diagonal, if there are values less then NO_EDGE than this node participates in a cycle of length equal to the value. Every other node of the same cycle will have the same value (on the main diagonal).

To reconstruct the cycle itself we need to use slightly modified version of algorithm with parent tracking.

  def shortestPath(weights: Array[Array[Int]], parents: Array[Array[Int]]) = {
    for (k <- weights.indices;
         i <- weights.indices;
         j <- weights.indices) {
      val throughK = weights(i)(k) + weights(k)(j)
      if (throughK < weights(i)(j)) {
        parents(i)(j) = k
        weights(i)(j) = throughK
      }
    }
  }

Parents matrix initially should contain source vertex index in an edge cell if there is an edge between the vertices and -1 otherwise. After function returns, for each edge you will have reference to the parent node in the shortest path tree. And then it's easy to recover actual cycles.

All in all we have the following program to find all minimal cycles

  val NO_EDGE = Integer.MAX_VALUE / 2;

  def shortestPathWithParentTracking(
         weights: Array[Array[Int]],
         parents: Array[Array[Int]]) = {
    for (k <- weights.indices;
         i <- weights.indices;
         j <- weights.indices) {
      val throughK = weights(i)(k) + weights(k)(j)
      if (throughK < weights(i)(j)) {
        parents(i)(j) = parents(i)(k)
        weights(i)(j) = throughK
      }
    }
  }

  def recoverCycles(
         cycleNodes: Seq[Int], 
         parents: Array[Array[Int]]): Set[Seq[Int]] = {
    val res = new mutable.HashSet[Seq[Int]]()
    for (node <- cycleNodes) {
      var cycle = new mutable.ArrayBuffer[Int]()
      cycle += node
      var other = parents(node)(node)
      do {
        cycle += other
        other = parents(other)(node)
      } while(other != node)
      res += cycle.sorted
    }
    res.toSet
  }

and a small main method just to test the result

  def main(args: Array[String]): Unit = {
    val n = 3
    val weights = Array(Array(NO_EDGE, 1, NO_EDGE), Array(NO_EDGE, NO_EDGE, 1), Array(1, NO_EDGE, NO_EDGE))
    val parents = Array(Array(-1, 1, -1), Array(-1, -1, 2), Array(0, -1, -1))
    shortestPathWithParentTracking(weights, parents)
    val cycleNodes = parents.indices.filter(i => parents(i)(i) < NO_EDGE)
    val cycles: Set[Seq[Int]] = recoverCycles(cycleNodes, parents)
    println("The following minimal cycle found:")
    cycles.foreach(c => println(c.mkString))
    println(s"Total: ${cycles.size} cycle found")
  }

and the output is

The following minimal cycle found:
012
Total: 1 cycle found

Only stopped containers can be listed using:

docker ps --filter "status=exited"

or

docker ps -f "status=exited"

It switches back because by default, when you click a link, it follows the link and loads the page. In your case, you don't want that. You can prevent it either by doing e.preventDefault(); (like Neal mentioned) or by returning false :

$(function() {
 $('.menulink').click(function(){
   $("#bg").attr('src',"img/picture1.jpg");
   return false;
 });
});

Interesting question on the differences between prevent default and return false.

In this case, return false will work just fine because the event doesn't need to be propagated.

list.pop() removes and returns the last element of the list.

You can achieve your result in two steps. First, create a list of unique entries using Advanced Filter... from the pull down Filter menu. To do so, you have to add a name of the column to be sorted out. It is necessary, otherwise Excel will treat first row as a name rather than an entry. Highlight column that you want to filter (A in the example below), click the filter icon and chose 'Advanced Filter...'. That will bring up a window where you can select an option to "Copy to another location". Choose that one, as you will need your original list to do counts (in my example I will choose C:C). Also, select "Unique record only". That will give you a list of unique entries. Then you can count their frequencies using =COUNTIF() command. See screedshots for details.

Hope this helps!

  +--------+-------+--------+-------------------+
  |   A    |   B   |   C    |         D         |
  +--------+-------+--------+-------------------+
1 | ToSort |       | ToSort |                   |
  +--------+-------+--------+-------------------+
2 |  GL15  |       | GL15   | =COUNTIF(A:A, C2) |
  +--------+-------+--------+-------------------+
3 |  GL15  |       | GL16   | =COUNTIF(A:A, C3) |
  +--------+-------+--------+-------------------+
4 |  GL15  |       | GL17   | =COUNTIF(A:A, C4) |
  +--------+-------+--------+-------------------+
5 |  GL16  |       |        |                   |
  +--------+-------+--------+-------------------+
6 |  GL17  |       |        |                   |
  +--------+-------+--------+-------------------+
7 |  GL17  |       |        |                   |
  +--------+-------+--------+-------------------+

PDF versions of the standard

As of 1st September 2014, the best locations by price for C and C++ standards documents in PDF are:

• C++17 – ISO/IEC 14882:2017: $116 from ansi.org

• C++14 – ISO/IEC 14882:2014: $90 NZD (about $60 US) from Standards New Zealand

• C++11 – ISO/IEC 14882:2011: $60 from ansi.org $60 from Techstreet

• C++03 – ISO 14882:2003: $30 from ansi.org $48 from SAI Global

• C++98 – ISO/IEC 14882:1998: $90 NZD (about $60 US) from Standards New Zealand

• C17/C18 – ISO/IEC 9899:2018: $185 from SAI Global / $116 from INCITS/ANSI / N2176 / c17_updated_proposed_fdis.pdf draft from November 2017 (Link broken, see Wayback Machine N2176)

• C11 – ISO/IEC 9899:2011: $30 $60 from ansi.org / WG14 draft version N1570

• C99 – ISO 9899:1999: $30 $60 from ansi.org / WG14 draft version N1256

• C90 – AS 3955-1991: $141 from ansi.org $175 from Techstreet (the Australian version of C90, identical to ISO 9899:1990)

• C90 – 9899:1990 Hardcopy available from SAI Global ($88 + shipping)

You cannot usually get old revisions of a standard (any standard) directly from the standards bodies shortly after a new edition of the standard is released. Thus, standards for C89, C90, C99, C++98, C++03 will be hard to find for purchase from a standards body. If you need an old revision of a standard, check Techstreet as one possible source. For example, it can still provide the Canadian version CAN/CSA-ISO/IEC 9899:1990 standard in PDF, for a fee.

Non-PDF electronic versions of the standard

• C89 – Draft version in ANSI text format: (https://web.archive.org/web/20161223125339/http://flash-gordon.me.uk/ansi.c.txt)
• C90 TC1; ISO/IEC 9899 TCOR1, single-page HTML document: (http://www.open-std.org/jtc1/sc22/wg14/www/docs/tc1.htm)
• C90 TC2; ISO/IEC 9899 TCOR2, single-page HTML document: (http://www.open-std.org/jtc1/sc22/wg14/www/docs/tc2.htm)

Print versions of the standard

Print copies of the standards are available from national standards bodies and ISO but are very expensive.

If you want a hardcopy of the C90 standard for much less money than above, you may be able to find a cheap used copy of Herb Schildt's book The Annotated ANSI Standard at Amazon, which contains the actual text of the standard (useful) and commentary on the standard (less useful - it contains several dangerous and misleading errors).

The C99 and C++03 standards are available in book form from Wiley and the BSI (British Standards Institute):

• C++03 Standard on Amazon
• C99 Standard on Amazon

Standards committee draft versions (free)

The working drafts for future standards are often available from the committee websites:

• C++ committee website
• C committee website

If you want to get drafts from the current or earlier C/C++ standards, there are some available for free on the internet:

For C:

• ANSI X3.159-198 (C89): I cannot find a PDF of C89, but it is almost the same as the below draft for ISO/IEC 9899:1990 (C90). The only differences are in the boilerplate and section numbering.

• ISO/IEC 9899:1990 (C90): https://www.pdf-archive.com/2014/10/02/ansi-iso-9899-1990-1/ansi-iso-9899-1990-1.pdf

(Almost the same as ANSI X3.159-198 (C89) except for the frontmatter and section numbering. Note that the conversion between ANSI and ISO/IEC Standard is seen inside this document, the document refers to its name as "ANSI/ISO: 9899/99" although this isn't the right name of the later made standard of it, the right name is "ISO/IEC 9899:1990")

• ISO/IEC 9899:1999 (C99): http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1256.pdf

• ISO/IEC 9899:2011 (C11): http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1570.pdf

• ISO/IEC 9899:2018 (C17/C18): https://web.archive.org/web/20181230041359if_/http://www.open-std.org/jtc1/sc22/wg14/www/abq/c17_updated_proposed_fdis.pdf (N2176)

For C++:

• ISO/IEC 14882:1998 (C++98): http://www.lirmm.fr/~ducour/Doc-objets/ISO+IEC+14882-1998.pdf

• ISO/IEC 14882:2003 (C++03): https://cs.nyu.edu/courses/fall11/CSCI-GA.2110-003/documents/c++2003std.pdf

• ISO/IEC 14882:2011 (C++11): http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3337.pdf

• ISO/IEC 14882:2014 (C++14): https://github.com/cplusplus/draft/blob/master/papers/n4140.pdf?raw=true

• ISO/IEC 14882:2017 (C++17): http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/n4659.pdf

• ISO/IEC 14882:2020 (C++20): https://isocpp.org/files/papers/N4860.pdf

Note that these documents are not the same as the standard, though the versions just prior to the meetings that decide on a standard are usually very close to what is in the final standard. The FCD (Final Committee Draft) versions are password protected; you need to be on the standards committee to get them.

Even though the draft versions might be very close to the final ratified versions of the standards, some of this post's editors would strongly advise you to get a copy of the actual documents — especially if you're planning on quoting them as references. Of course, starving students should go ahead and use the drafts if strapped for cash.

It appears that, if you are willing and able to wait a few months after ratification of a standard, to search for "INCITS/ISO/IEC" instead of "ISO/IEC" when looking for a standard is the key. By doing so, one of this post's editors was able to find the C11 and C++11 standards at reasonable prices. For example, if you search for "INCITS/ISO/IEC 9899:2011" instead of "ISO/IEC 9899:2011" on webstore.ansi.org you will find the reasonably priced PDF version.

The site https://wg21.link/ provides short-URL links to the C++ current working draft and draft standards, and committee papers:

• https://wg21.link/std11 - C++11
• https://wg21.link/std14 - C++14
• https://wg21.link/std17 - C++17
• https://wg21.link/std20 - C++20
• https://wg21.link/std - current working draft

The current draft of the standard is maintained as LaTeX sources on Github. These sources can be converted to HTML using cxxdraft-htmlgen. The following sites maintain HTML pages so generated:

• Tim Song - Current working draft - C++11 - C++14 - C++17 - C++20
• Eelis - Current working draft

Tim Song also maintains generated HTML and PDF versions of the Networking TS and Ranges TS.

In windows 8.1, setting the PATH Environment Variable to Git's bin directory didn't work for me. Instead, I had to use the cmd directory C:\Program Files (x86)\Git\cmd.

Credit to @VonC in this question

First I would recommend you always refer docs before you start a new thing.

We have SchedulerFactory which schedules Job based on the Cron Expression given to it.

    //Create instance of factory
    SchedulerFactory schedulerFactory=new StdSchedulerFactory();

    //Get schedular
    Scheduler scheduler= schedulerFactory.getScheduler();

    //Create JobDetail object specifying which Job you want to execute
    JobDetail jobDetail=new JobDetail("myJobClass","myJob1",MyJob.class);

    //Associate Trigger to the Job
    CronTrigger trigger=new CronTrigger("cronTrigger","myJob1","0 0/1 * * * ?");

    //Pass JobDetail and trigger dependencies to schedular
    scheduler.scheduleJob(jobDetail,trigger);

    //Start schedular
    scheduler.start();

MyJob.class

public class MyJob implements Job{

      @Override
      public void execute(JobExecutionContext jobExecutionContext) throws JobExecutionException {
                 System.out.println("My Logic");
        }

    }

ifconfig $(netstat -rn | grep -E "^default|^0.0.0.0" | head -1 | awk '{print $NF}') | grep 'inet ' | awk '{print $2}' | grep -Eo '([0-9]*\.){3}[0-9]*' 

1. If you want to integrate Retrofit (all steps defined here):

Goto my blog : retrofit with kotlin

2. Please use android-async-http library.

the link below explains everything step by step.

http://loopj.com/android-async-http/

Here are sample apps:

1. http://www.techrepublic.com/blog/software-engineer/calling-restful-services-from-your-android-app/

2. http://blog.strikeiron.com/bid/73189/Integrate-a-REST-API-into-Android-Application-in-less-than-15-minutes

Create a class :

public class HttpUtils {
  private static final String BASE_URL = "http://api.twitter.com/1/";
 
  private static AsyncHttpClient client = new AsyncHttpClient();

  public static void get(String url, RequestParams params, AsyncHttpResponseHandler responseHandler) {
      client.get(getAbsoluteUrl(url), params, responseHandler);
  }

  public static void post(String url, RequestParams params, AsyncHttpResponseHandler responseHandler) {
      client.post(getAbsoluteUrl(url), params, responseHandler);
  }
      
  public static void getByUrl(String url, RequestParams params, AsyncHttpResponseHandler responseHandler) {
      client.get(url, params, responseHandler);
  }

  public static void postByUrl(String url, RequestParams params, AsyncHttpResponseHandler responseHandler) {
      client.post(url, params, responseHandler);
  }

  private static String getAbsoluteUrl(String relativeUrl) {
      return BASE_URL + relativeUrl;
  }
}

Call Method :

    RequestParams rp = new RequestParams();
    rp.add("username", "aaa"); rp.add("password", "aaa@123");
                    
    HttpUtils.post(AppConstant.URL_FEED, rp, new JsonHttpResponseHandler() {
        @Override
        public void onSuccess(int statusCode, Header[] headers, JSONObject response) {
            // If the response is JSONObject instead of expected JSONArray
            Log.d("asd", "---------------- this is response : " + response);
            try {
                JSONObject serverResp = new JSONObject(response.toString());                                                
            } catch (JSONException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }                   
        }
            
        @Override
        public void onSuccess(int statusCode, Header[] headers, JSONArray timeline) {
            // Pull out the first event on the public timeline
                    
        }
    });

Please grant internet permission in your manifest file.

 <uses-permission android:name="android.permission.INTERNET" />

you can add compile 'com.loopj.android:android-async-http:1.4.9' for Header[] and compile 'org.json:json:20160212' for JSONObject in build.gradle file if required.

The reason you separate the login and non-login shell is because the .bashrc file is reloaded every time you start a new copy of Bash. The .profile file is loaded only when you either log in or use the appropriate flag to tell Bash to act as a login shell.

Personally,

• I put my PATH setup into a .profile file (because I sometimes use other shells);
• I put my Bash aliases and functions into my .bashrc file;

• I put this

  #!/bin/bash
  #
  # CRM .bash_profile Time-stamp: "2008-12-07 19:42"
  #
  # echo "Loading ${HOME}/.bash_profile"
  source ~/.profile # get my PATH setup
  source ~/.bashrc  # get my Bash aliases
  

  in my .bash_profile file.

Oh, and the reason you need to type bash again to get the new alias is that Bash loads your .bashrc file when it starts but it doesn't reload it unless you tell it to. You can reload the .bashrc file (and not need a second shell) by typing

source ~/.bashrc

which loads the .bashrc file as if you had typed the commands directly to Bash.

Update:

I have added this link to my other answer how to use JWT authentication for ASP.NET Web API here for anyone interested in JWT.

We have managed to apply HMAC authentication to secure Web API, and it worked okay. HMAC authentication uses a secret key for each consumer which both consumer and server both know to hmac hash a message, HMAC256 should be used. Most of the cases, hashed password of the consumer is used as a secret key.

The message normally is built from data in the HTTP request, or even customized data which is added to HTTP header, the message might include:

1. Timestamp: time that request is sent (UTC or GMT)
2. HTTP verb: GET, POST, PUT, DELETE.
3. post data and query string,
4. URL

Under the hood, HMAC authentication would be:

Consumer sends a HTTP request to web server, after building the signature (output of hmac hash), the template of HTTP request:

User-Agent: {agent}   
Host: {host}   
Timestamp: {timestamp}
Authentication: {username}:{signature}

Example for GET request:

GET /webapi.hmac/api/values

User-Agent: Fiddler    
Host: localhost    
Timestamp: Thursday, August 02, 2012 3:30:32 PM 
Authentication: cuongle:LohrhqqoDy6PhLrHAXi7dUVACyJZilQtlDzNbLqzXlw=

The message to hash to get signature:

GET\n
Thursday, August 02, 2012 3:30:32 PM\n
/webapi.hmac/api/values\n

Example for POST request with query string (signature below is not correct, just an example)

POST /webapi.hmac/api/values?key2=value2

User-Agent: Fiddler    
Host: localhost    
Content-Type: application/x-www-form-urlencoded
Timestamp: Thursday, August 02, 2012 3:30:32 PM 
Authentication: cuongle:LohrhqqoDy6PhLrHAXi7dUVACyJZilQtlDzNbLqzXlw=

key1=value1&key3=value3

The message to hash to get signature

GET\n
Thursday, August 02, 2012 3:30:32 PM\n
/webapi.hmac/api/values\n
key1=value1&key2=value2&key3=value3

Please note that form data and query string should be in order, so the code on the server get query string and form data to build the correct message.

When HTTP request comes to the server, an authentication action filter is implemented to parse the request to get information: HTTP verb, timestamp, uri, form data and query string, then based on these to build signature (use hmac hash) with the secret key (hashed password) on the server.

The secret key is got from the database with the username on the request.

Then server code compares the signature on the request with the signature built; if equal, authentication is passed, otherwise, it failed.

The code to build signature:

private static string ComputeHash(string hashedPassword, string message)
{
    var key = Encoding.UTF8.GetBytes(hashedPassword.ToUpper());
    string hashString;

    using (var hmac = new HMACSHA256(key))
    {
        var hash = hmac.ComputeHash(Encoding.UTF8.GetBytes(message));
        hashString = Convert.ToBase64String(hash);
    }

    return hashString;
}

So, how to prevent replay attack?

Add constraint for the timestamp, something like:

servertime - X minutes|seconds  <= timestamp <= servertime + X minutes|seconds 

(servertime: time of request coming to server)

And, cache the signature of the request in memory (use MemoryCache, should keep in the limit of time). If the next request comes with the same signature with the previous request, it will be rejected.

The demo code is put as here: https://github.com/cuongle/Hmac.WebApi

This worked for me, seems to work as global :

Dim savePos(2 To 8) As Integer

And can call it from every sub, for example getting first element :

MsgBox (savePos(2))

If you're using C with Win32, you can leverage its Structured Exception Handling (SEH) to simulate try/catch.

If you're using C in platforms that don't support setjmp() and longjmp(), have a look at this Exception Handling of pjsip library, it does provide its own implementation

Foreach-object operation statement:

$a,$b = 'hi.there' | foreach split .
$a,$b

hi
there

You can use angular's function called angular.isUndefined(value) returns boolean.

You may read more about angular's functions here: AngularJS Functions (isUndefined)

One reason to do a statically linked build is to verify that you have full closure for the executable, i.e. that all symbol references are resolved correctly.

As a part of a large system that was being built and tested using continuous integration, the nightly regression tests were run using a statically linked version of the executables. Occasionally, we would see that a symbol would not resolve and the static link would fail even though the dynamically linked executable would link successfully.

This was usually occurring when symbols that were deep seated within the shared libs had a misspelt name and so would not statically link. The dynamic linker does not completely resolve all symbols, irrespective of using depth-first or breadth-first evaluation, so you can finish up with a dynamically linked executable that does not have full closure.

Ref and event bus both has issues when your control render is affected by v-if. So, I decided to go with a simpler method.

The idea is using an array as a queue to send methods that needs to be called to the child component. Once the component got mounted, it will process this queue. It watches the queue to execute new methods.

(Borrowing some code from Desmond Lua's answer)

Parent component code:

import ChildComponent from './components/ChildComponent'

new Vue({
  el: '#app',
  data: {
    item: {},
    childMethodsQueue: [],
  },
  template: `
  <div>
     <ChildComponent :item="item" :methods-queue="childMethodsQueue" />
     <button type="submit" @click.prevent="submit">Post</button>
  </div>
  `,
  methods: {
    submit() {
      this.childMethodsQueue.push({name: ChildComponent.methods.save.name, params: {}})
    }
  },
  components: { ChildComponent },
})

This is code for ChildComponent

<template>
 ...
</template>

<script>
export default {
  name: 'ChildComponent',
  props: {
    methodsQueue: { type: Array },
  },
  watch: {
    methodsQueue: function () {
      this.processMethodsQueue()
    },
  },
  mounted() {
    this.processMethodsQueue()
  },
  methods: {
    save() {
        console.log("Child saved...")
    },
    processMethodsQueue() {
      if (!this.methodsQueue) return
      let len = this.methodsQueue.length
      for (let i = 0; i < len; i++) {
        let method = this.methodsQueue.shift()
        this[method.name](method.params)
      }
    },
  },
}
</script>

And there is a lot of room for improvement like moving processMethodsQueue to a mixin...

jsonb in Postgres 9.4+

You can use the same query as below, just with jsonb_array_elements().

But rather use the jsonb "contains" operator @> in combination with a matching GIN index on the expression data->'objects':

CREATE INDEX reports_data_gin_idx ON reports
USING gin ((data->'objects') jsonb_path_ops);

SELECT * FROM reports WHERE data->'objects' @> '[{"src":"foo.png"}]';

Since the key objects holds a JSON array, we need to match the structure in the search term and wrap the array element into square brackets, too. Drop the array brackets when searching a plain record.

More explanation and options:

• Index for finding an element in a JSON array

json in Postgres 9.3+

Unnest the JSON array with the function json_array_elements() in a lateral join in the FROM clause and test for its elements:

SELECT data::text, obj
FROM   reports r, json_array_elements(r.data#>'{objects}') obj
WHERE  obj->>'src' = 'foo.png';

db<>fiddle here
_{Old sqlfiddle}

The CTE (WITH query) just substitutes for a table reports.
Or, equivalent for just a single level of nesting:

SELECT *
FROM   reports r, json_array_elements(r.data->'objects') obj
WHERE  obj->>'src' = 'foo.png';

->>, -> and #> operators are explained in the manual.

Both queries use an implicit JOIN LATERAL.

Closely related:

• Query for element of array in JSON column

This would be a good place to use a closure:

(function() {
  var toggled = false;
  $(".list-toggle").click(function() {
    toggled = !toggled;
    $(".list-sort").attr("colspan", toggled ? 6 : null);
  });
})();

The toggled variable will only exist inside of the scope defined, and can be used to store the state of the toggle from one click event to the next.

String.valueOf('X') will create you a String "X"

"X".charAt(0) will give you the character 'X'

Comparing to Apple's UINavigationController and UIViewController, Google does not do well in Android software architecture. And Android's document about Fragment does not help much.

When you enter FragmentB from FragmentA, the existing FragmentA instance is not destroyed. When you press Back in FragmentB and return to FragmentA, we don't create a new FragmentA instance. The existing FragmentA instance's onCreateView() will be called.

The key thing is we should not inflate view again in FragmentA's onCreateView(), because we are using the existing FragmentA's instance. We need to save and reuse the rootView.

The following code works well. It does not only keep fragment state, but also reduces the RAM and CPU load (because we only inflate layout if necessary). I can't believe Google's sample code and document never mention it but always inflate layout.

Version 1(Don't use version 1. Use version 2)

public class FragmentA extends Fragment {
    View _rootView;
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        if (_rootView == null) {
            // Inflate the layout for this fragment
            _rootView = inflater.inflate(R.layout.fragment_a, container, false);
            // Find and setup subviews
            _listView = (ListView)_rootView.findViewById(R.id.listView);
            ...
        } else {
            // Do not inflate the layout again.
            // The returned View of onCreateView will be added into the fragment.
            // However it is not allowed to be added twice even if the parent is same.
            // So we must remove _rootView from the existing parent view group
            // (it will be added back).
            ((ViewGroup)_rootView.getParent()).removeView(_rootView);
        }
        return _rootView;
    }
}

------Update on May 3 2005:-------

As the comments mentioned, sometimes _rootView.getParent() is null in onCreateView, which causes the crash. Version 2 removes _rootView in onDestroyView(), as dell116 suggested. Tested on Android 4.0.3, 4.4.4, 5.1.0.

Version 2

public class FragmentA extends Fragment {
    View _rootView;
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        if (_rootView == null) {
            // Inflate the layout for this fragment
            _rootView = inflater.inflate(R.layout.fragment_a, container, false);
            // Find and setup subviews
            _listView = (ListView)_rootView.findViewById(R.id.listView);
            ...
        } else {
            // Do not inflate the layout again.
            // The returned View of onCreateView will be added into the fragment.
            // However it is not allowed to be added twice even if the parent is same.
            // So we must remove _rootView from the existing parent view group
            // in onDestroyView() (it will be added back).
        }
        return _rootView;
    }

    @Override
    public void onDestroyView() {
        if (_rootView.getParent() != null) {
            ((ViewGroup)_rootView.getParent()).removeView(_rootView);
        }
        super.onDestroyView();
    }
}

WARNING!!!

This is a HACK! Though I am using it in my app, you need to test and read comments carefully.

Although ididak's response is pretty cool, and Handyman5 provides a script to use it, I found it a little restricted to use that approach.

Sometimes you need to search for something that can appear/disappear over time, so why not search against all commits? Besides that, sometimes you need a verbose response, and other times only commit matches. Here are two versions of those options. Put these scripts on your path:

git-find-file

for branch in $(git rev-list --all)
do
  if (git ls-tree -r --name-only $branch | grep --quiet "$1")
  then
     echo $branch
  fi
done

git-find-file-verbose

for branch in $(git rev-list --all)
do
  git ls-tree -r --name-only $branch | grep "$1" | sed 's/^/'$branch': /'
done

Now you can do

$ git find-file <regex>
sha1
sha2

$ git find-file-verbose <regex>
sha1: path/to/<regex>/searched
sha1: path/to/another/<regex>/in/same/sha
sha2: path/to/other/<regex>/in/other/sha

See that using getopt you can modify that script to alternate searching all commits, refs, refs/heads, been verbose, etc.

$ git find-file <regex>
$ git find-file --verbose <regex>
$ git find-file --verbose --decorated --color <regex>

Checkout https://github.com/albfan/git-find-file for a possible implementation.

The add_business_days has a small bug. Try the following with the existing function and the output will be a Saturday.

Startdate = Friday Business days to add = 1 Holidays array = Add date for the following Monday.

I have fixed that in my function below.

function add_business_days($startdate, $buisnessdays, $holidays = array(), $dateformat = 'Y-m-d'){
$i= 1;
$dayx= strtotime($startdate);
$buisnessdays= ceil($buisnessdays);

while($i < $buisnessdays)
{
    $day= date('N',$dayx);

    $date= date('Y-m-d',$dayx);
    if($day < 6 && !in_array($date,$holidays))
        $i++;

    $dayx= strtotime($date.' +1 day');
}

## If the calculated day falls on a weekend or is a holiday, then add days to the next business day
$day= date('N',$dayx);
$date= date('Y-m-d',$dayx);

while($day >= 6 || in_array($date,$holidays))
{
    $dayx= strtotime($date.' +1 day');
    $day= date('N',$dayx);
    $date= date('Y-m-d',$dayx);
}

return date($dateformat, $dayx);}

Following a Google...

Taking the code from the website:

CREATE TABLE CRLF
    (
        col1 VARCHAR(1000)
    )

INSERT CRLF SELECT 'The quick brown@'
INSERT CRLF SELECT 'fox @jumped'
INSERT CRLF SELECT '@over the '
INSERT CRLF SELECT 'log@'

SELECT col1 FROM CRLF

Returns:

col1
-----------------
The quick brown@
fox @jumped
@over the
log@

(4 row(s) affected)


UPDATE CRLF
SET col1 = REPLACE(col1, '@', CHAR(13))

Looks like it can be done by replacing a placeholder with CHAR(13)

Good question, never done it myself :)

If your pdf is text-based and not a scanned document (i.e. if you can click and drag to select text in your table in a PDF viewer), then you can use the module camelot-py with

import camelot
tables = camelot.read_pdf('foo.pdf')

You then can choose how you want to save the tables (as csv, json, excel, html, sqlite), and whether the output should be compressed in a ZIP archive.

tables.export('foo.csv', f='csv', compress=False)

Edit: tabula-py appears roughly 6 times faster than camelot-py so that should be used instead.

import camelot
import cProfile
import pstats
import tabula

cmd_tabula = "tabula.read_pdf('table.pdf', pages='1', lattice=True)"
prof_tabula = cProfile.Profile().run(cmd_tabula)
time_tabula = pstats.Stats(prof_tabula).total_tt

cmd_camelot = "camelot.read_pdf('table.pdf', pages='1', flavor='lattice')"
prof_camelot = cProfile.Profile().run(cmd_camelot)
time_camelot = pstats.Stats(prof_camelot).total_tt

print(time_tabula, time_camelot, time_camelot/time_tabula)

gave

1.8495559890000015 11.057014036000016 5.978199147125147

Some of the other answers given are great. But I am surprised that no one mentioned that it can be used to help enforce const correctness in a compact way.

Something like this:

const int n = (x != 0) ? 10 : 20;

so basically n is a const whose initial value is dependent on a condition statement. The easiest alternative is to make n not a const, this would allow an ordinary if to initialize it. But if you want it to be const, it cannot be done with an ordinary if. The best substitute you could make would be to use a helper function like this:

int f(int x) {
    if(x != 0) { return 10; } else { return 20; }
}

const int n = f(x);

but the ternary if version is far more compact and arguably more readable.

For what its worth: A decimal number, is a decimal number, you either round it to some other value or not. Internally, it will approximate a decimal fraction according to the rule of floating point arthmetic and handling. It stays a decimal number (floating point, in JS a double) internally, no matter how you many digits you want to display it with.

To present it for display, you can choose the precision of the display to whatever you want by string conversion. Presentation is a display issue, not a storage thing.

After two days of research I finally found that to access s.o. public tweets you just need any application credentials, and not that particular user ones. So if you are developing for a client, you don't have to ask them to do anything.

To use the new Twitter API 1.1 you need two things:

• the Abraham's TwitterOAuth library that Dante Cullari already mentioned
• a brand new or already working application created via the Twitter Developer site

First, you can (actually have to) create an application with your own credentials and then get the Access token (OAUTH_TOKEN) and Access token secret (OAUTH_TOKEN_SECRET) from the "Your access token" section. Then you supply them in the constructor for the new TwitterOAuth object. Now you can access anyone public tweets.

$connection = new TwitterOAuth( CONSUMER_KEY, CONSUMER_SECRET, OAUTH_TOKEN, OAUTH_TOKEN_SECRET );

$connection->host = "https://api.twitter.com/1.1/"; // change the default
$connection->ssl_verifypeer = TRUE;
$connection->content_type = 'application/x-www-form-urlencoded';

$tweets = $connection->get('http://api.twitter.com/1.1/statuses/user_timeline.json?screen_name='.$username.'&count='.$count);

Actually I think this is what Pavel has suggested also, but it is not so obvious from his answer.

Hope this saves someone else those two days :)

date = date.replace(/[0-9]{1,2}(:[0-9]{2}){2}/, function (time) {
    var hms = time.split(':'),
        h = +hms[0],
        suffix = (h < 12) ? 'am' : 'pm';
    hms[0] = h % 12 || 12;        
    return hms.join(':') + suffix
});

edit: I forgot to deal with 12 o'clock am/pm. Fixed.

In Centos 6.7, in my case the library file /usr/lib64/php/modules/sqlite3.so was missing.

yum install php-pdo 

vim /etc/php.d/sqlite3.ini
; Enable sqlite3 extension module
extension=sqlite3.so

sudo service httpd restart

The colon is a built-in command that does nothing, but returns 0 (success). Thus, it's shorter (and faster) than calling an actual command to do the same thing.

To expand a little on other answers here, and help explain a lot of the example code you'll see dotted about, most of the time you don't read and write to a stream directly. Streams are a low-level means to transfer data.

You'll notice that the functions for reading and writing are all byte orientated, e.g. WriteByte(). There are no functions for dealing with integers, strings etc. This makes the stream very general-purpose, but less simple to work with if, say, you just want to transfer text.

However, .NET provides classes that convert between native types and the low-level stream interface, and transfers the data to or from the stream for you. Some notable such classes are:

StreamWriter // Badly named. Should be TextWriter.
StreamReader // Badly named. Should be TextReader.
BinaryWriter
BinaryReader

To use these, first you acquire your stream, then you create one of the above classes and associate it with the stream. E.g.

MemoryStream memoryStream = new MemoryStream();
StreamWriter myStreamWriter = new StreamWriter(memoryStream);

StreamReader and StreamWriter convert between native types and their string representations then transfer the strings to and from the stream as bytes. So

myStreamWriter.Write(123);

will write "123" (three characters '1', '2' then '3') to the stream. If you're dealing with text files (e.g. html), StreamReader and StreamWriter are the classes you would use.

Whereas

myBinaryWriter.Write(123);

will write four bytes representing the 32-bit integer value 123 (0x7B, 0x00, 0x00, 0x00). If you're dealing with binary files or network protocols BinaryReader and BinaryWriter are what you might use. (If you're exchanging data with networks or other systems, you need to be mindful of endianness, but that's another post.)