public class Application {

    private static List<HttpMessageConverter<?>> getMessageConverters() {
        List<HttpMessageConverter<?>> converters = new ArrayList<HttpMessageConverter<?>>();
        converters.add(new MappingJacksonHttpMessageConverter());
        return converters;
    }   

    public static void main(String[] args) {
        RestTemplate restTemplate = new RestTemplate();

        restTemplate.setMessageConverters(getMessageConverters());
        HttpHeaders headers = new HttpHeaders();
        headers.setAccept(Arrays.asList(MediaType.APPLICATION_JSON));
        HttpEntity<String> entity = new HttpEntity<String>(headers);
        //Page page = restTemplate.getForObject("http://graph.facebook.com/pivotalsoftware", Page.class);

        ResponseEntity<Page> response = 
                  restTemplate.exchange("http://graph.facebook.com/skbh86", HttpMethod.GET, entity, Page.class, "1");
        Page page = response.getBody();
        System.out.println("Name:    " + page.getId());
        System.out.println("About:   " + page.getFirst_name());
        System.out.println("Phone:   " + page.getLast_name());
        System.out.println("Website: " + page.getMiddle_name());
        System.out.println("Website: " + page.getName());
    }
}

I had a similar issue with a different cause: the yo node generator had added "files": ["lib/"] to my package.json and because my cli.js was outside of the lib/ directory, it was getting skipped when publishing to npm.

(Yeoman issue at https://github.com/yeoman/generator-node/issues/63 it should be fixed soon.)

You need to take out a float: left; property... because when you use float the parent div do not grub the height of it's children... If you want the parent dive to get the children height you need to give to the parent div a css property overflow:hidden; But to solve your problem you can use display: table-cell; instead of float... it will automatically scale the div height to its parent height...

The easiest solution to this is to use rgba as the color: border-color: rgba(0,0,0,0); That is fully transparent border color.

left(currentdb.Name,instr(1,currentdb.Name,dir(currentdb.Name))-1)

The Dir function will return only the file portion of the full path. Currentdb.Name is used here, but it could be any full path string.

Purpose is different:

The transient keyword and @Transient annotation have two different purposes: one deals with serialization and one deals with persistence. As programmers, we often marry these two concepts into one, but this is not accurate in general. Persistence refers to the characteristic of state that outlives the process that created it. Serialization in Java refers to the process of encoding/decoding an object's state as a byte stream.

The transient keyword is a stronger condition than @Transient:

If a field uses the transient keyword, that field will not be serialized when the object is converted to a byte stream. Furthermore, since JPA treats fields marked with the transient keyword as having the @Transient annotation, the field will not be persisted by JPA either.

On the other hand, fields annotated @Transient alone will be converted to a byte stream when the object is serialized, but it will not be persisted by JPA. Therefore, the transient keyword is a stronger condition than the @Transient annotation.

Example

This begs the question: Why would anyone want to serialize a field that is not persisted to the application's database? The reality is that serialization is used for more than just persistence. In an Enterprise Java application there needs to be a mechanism to exchange objects between distributed components; serialization provides a common communication protocol to handle this. Thus, a field may hold critical information for the purpose of inter-component communication; but that same field may have no value from a persistence perspective.

For example, suppose an optimization algorithm is run on a server, and suppose this algorithm takes several hours to complete. To a client, having the most up-to-date set of solutions is important. So, a client can subscribe to the server and receive periodic updates during the algorithm's execution phase. These updates are provided using the ProgressReport object:

@Entity
public class ProgressReport implements Serializable{

    private static final long serialVersionUID = 1L;

    @Transient
    long estimatedMinutesRemaining;
    String statusMessage;
    Solution currentBestSolution;

}

The Solution class might look like this:

@Entity
public class Solution implements Serializable{

    private static final long serialVersionUID = 1L;

    double[][] dataArray;
    Properties properties;
}

The server persists each ProgressReport to its database. The server does not care to persist estimatedMinutesRemaining, but the client certainly cares about this information. Therefore, the estimatedMinutesRemaining is annotated using @Transient. When the final Solution is located by the algorithm, it is persisted by JPA directly without using a ProgressReport.

The main goal of adding the super() in the sub-class constructors is that the main job of the compiler is to make a direct or indirect connection of all the classes with the Object class that's why the compiler checks if we have provided the super(parameterized) then compiler doesn't take any responsibility. so that all the instance member gets initialized from Object to the sub - classes.

Title, Short Description and Developer Name

• HTML formatting is not supported in these fields, but you can include UTF-8 symbols and Emoji: ??

Full Description and What’s New:

• For the Long Description and What’s New Section, there is a wider variety of HTML codes you can apply to format and structure your text. However, they will look slightly different in Google Play Store app and web.
• Here is a table with codes that you can use for formatting Description and What’s New fields for your app on Google Play (originally appeared on ASO Stack blog):

Also you can refer this..

https://thetool.io/2020/html-emoji-google-play

The hidden input element trick still appears to work (Chrome 43) to prevent autofill, but one thing to keep in mind is that Chrome will attempt to autofill based on the placeholder tag. You need to match the hidden input element's placeholder to that of the input you're trying to disable.

In my case, I had a field with a placeholder text of 'City or Zip' which I was using with Google Place Autocomplete. It appeared that it was attempting to autofill as if it were part of an address form. The trick didn't work until I put the same placeholder on the hidden element as on the real input:

<input style="display:none;" type="text" placeholder="City or Zip" />
<input autocomplete="off" type="text" placeholder="City or Zip" />

If you just need to print present working directory then you can follow this.

$ vim test

#!/bin/bash
pwd
:wq to save the test file.

Give execute permission:

chmod u+x test

Then execute the script by ./test then you can see the present working directory.

This answer is a workaround for those who use "Theme.AppCompat.Dialog" or any other "Theme.AppCompat.Dialog" descendants like "Theme.AppCompat.Light.Dialog", "Theme.AppCompat.DayNight.Dialog", etc. I myself has to use AppCompat dialog because i use AppCompatActivity as extends for all my activities. There will be a problem that make the dialog has padding on every sides(top, right, bottom and left) if we use the accepted answer.

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    setContentView(R.layout.your_layout);

    getWindow().setLayout(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
}

On your Activity's style, add these code

<style name="DialogActivityTheme" parent="Theme.AppCompat.Dialog">
    <item name="windowNoTitle">true</item>
    <item name="android:windowBackground">@null</item>
</style>

As you may notice, the problem that generate padding to our dialog is "android:windowBackground", so here i make the window background to null.

this will open the file with the default windows program (notepad if you haven't changed it);

Process.Start(@"c:\myfile.txt")

As the other answers state, changing the user's profile (e.g. the 'DEFAULT' profile) appropriately will lead to passwords, that once set, will never expire.

However, as one commenter points out, passwords set under the profile's old values may already be expired, and (if after the profile's specified grace period) the account locked.

The solution for expired passwords with locked accounts (as provided in an answering comment) is to use one version of the ALTER USER command:

ALTER USER xyz_user ACCOUNT UNLOCK;

However the unlock command only works for accounts where the account is actually locked, but not for those accounts that are in the grace period, i.e. where the password is expired but the account is not yet locked. For these accounts the password must be reset with another version of the ALTER USER command:

ALTER USER xyz_user IDENTIFIED BY new_password;

Below is a little SQL*Plus script that a privileged user (e.g. user 'SYS') can use to reset a user's password to the current existing hashed value stored in the database.

EDIT: Older versions of Oracle store the password or password-hash in the pword column, newer versions of Oracle store the password-hash in the spare4 column. Script below changed to collect the pword and spare4 columns, but to use the spare4 column to reset the user's account; modify as needed.

REM Tell SQL*Plus to show before and after versions of variable substitutions.
SET VERIFY ON
SHOW VERIFY

REM Tell SQL*Plus to use the ampersand '&' to indicate variables in substitution/expansion.
SET DEFINE '&'
SHOW DEFINE

REM Specify in a SQL*Plus variable the account to 'reset'.
REM Note that user names are case sensitive in recent versions of Oracle.
REM DEFINE USER_NAME = 'xyz_user'

REM Show the status of the account before reset.
SELECT
  ACCOUNT_STATUS,
  TO_CHAR(LOCK_DATE, 'YYYY-MM-DD HH24:MI:SS') AS LOCK_DATE,
  TO_CHAR(EXPIRY_DATE, 'YYYY-MM-DD HH24:MI:SS') AS EXPIRY_DATE
FROM
  DBA_USERS
WHERE
  USERNAME = '&USER_NAME';

REM Create SQL*Plus variable to hold the existing values of the password and spare4 columns.
DEFINE OLD_SPARE4 = ""
DEFINE OLD_PASSWORD = ""

REM Tell SQL*Plus where to store the values to be selected with SQL.
REM Note that the password hash value is stored in spare4 column in recent versions of Oracle,
REM   and in the password column in older versions of Oracle.
COLUMN SPARE4HASH NEW_VALUE OLD_SPARE4
COLUMN PWORDHASH NEW_VALUE OLD_PASSWORD

REM Select the old spare4 and password columns as delimited strings 
SELECT 
  '''' || SPARE4 || '''' AS SPARE4HASH,
  '''' || PASSWORD || '''' AS PWORDHASH
FROM 
  SYS.USER$ 
WHERE 
  NAME = '&USER_NAME';

REM Show the contents of the SQL*Plus variables
DEFINE OLD_SPARE4
DEFINE OLD_PASSWORD

REM Reset the password - Older versions of Oracle (e.g. Oracle 10g and older) 
REM ALTER USER &USER_NAME IDENTIFIED BY VALUES &OLD_PASSWORD;

REM Reset the password - Newer versions of Oracle (e.g. Oracle 11g and newer) 
ALTER USER &USER_NAME IDENTIFIED BY VALUES &OLD_SPARE4;

REM Show the status of the account after reset
SELECT
  ACCOUNT_STATUS,
  TO_CHAR(LOCK_DATE, 'YYYY-MM-DD HH24:MI:SS') AS LOCK_DATE,
  TO_CHAR(EXPIRY_DATE, 'YYYY-MM-DD HH24:MI:SS') AS EXPIRY_DATE
FROM
  DBA_USERS
WHERE
  USERNAME = '&USER_NAME';

alter table table_name 
rename column old_column_name/field_name to new_column_name/field_name;

example: alter table student column name to username;

After years, I want to add another approach by using a view engine in Express.js

var fs = require('fs');

app.get('/test', function(req, res, next) {
    var html = fs.readFileSync('./html/test.html', 'utf8')
    res.render('test', { html: html })
    // or res.send(html)
})

Then, do that in your views/test if you choose res.render method at the above code (I'm writing in EJS format):

<%- locals.html %>

That's all.

In this way, you don't need to break your View Engine arrangements.

DEMO : http://jsfiddle.net/shfj70qp/

//dd/mm/yyyy 

var date = new Date();
var month = date.getMonth();
var day = date.getDate();
var year = date.getFullYear();

console.log(month+"/"+day+"/"+year);

There is a quirk with this that might be relevant for some people... From the PHP docs comments.

If you want cURL to timeout in less than one second, you can use CURLOPT_TIMEOUT_MS, although there is a bug/"feature" on "Unix-like systems" that causes libcurl to timeout immediately if the value is < 1000 ms with the error "cURL Error (28): Timeout was reached". The explanation for this behavior is:

"If libcurl is built to use the standard system name resolver, that portion of the transfer will still use full-second resolution for timeouts with a minimum timeout allowed of one second."

What this means to PHP developers is "You can't use this function without testing it first, because you can't tell if libcurl is using the standard system name resolver (but you can be pretty sure it is)"

The problem is that on (Li|U)nix, when libcurl uses the standard name resolver, a SIGALRM is raised during name resolution which libcurl thinks is the timeout alarm.

The solution is to disable signals using CURLOPT_NOSIGNAL. Here's an example script that requests itself causing a 10-second delay so you can test timeouts:

if (!isset($_GET['foo'])) {
    // Client
    $ch = curl_init('http://localhost/test/test_timeout.php?foo=bar');
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_NOSIGNAL, 1);
    curl_setopt($ch, CURLOPT_TIMEOUT_MS, 200);
    $data = curl_exec($ch);
    $curl_errno = curl_errno($ch);
    $curl_error = curl_error($ch);
    curl_close($ch);

    if ($curl_errno > 0) {
        echo "cURL Error ($curl_errno): $curl_error\n";
    } else {
        echo "Data received: $data\n";
    }
} else {
    // Server
    sleep(10);
    echo "Done.";
}

From http://www.php.net/manual/en/function.curl-setopt.php#104597

Try the code below to prevent the default behaviour scrolling back to the top of the page

$(document).ready(function() {   
  $('.galleryicon').live("click", function(e) {  // the (e) represent the event
    $('#mainImage').hide();     
    $('#cakebox').css('background-image', "url('ajax-loader.gif')");     
    var i = $('<img />').attr('src',this.href).load(function() {         
      $('#mainImage').attr('src', i.attr('src'));         
      $('#cakebox').css('background-image', 'none');         
      $('#mainImage').fadeIn();     
    });
  e.preventDefault(); //Prevent default click action which is causing the 
  return false;       //page to scroll back to the top
  });  
});

For more information on event.preventDefault() have a look here at the official documentation.

#!/usr/bin/python

str = raw_input("Enter a string ")
print "String entered above is %s" %str
strlist = [x for x in str ]
print "Strlist is %s" %strlist
strrev = list(reversed(strlist)) 
print "Strrev is %s" %strrev
if strlist == strrev :
   print "String is palindrome"
else :
   print "String is not palindrome"

I was just recently faced with this issue and followed the steps outlined here. There might be a chance that you are not pointing to the right OpenSSL certificate. After running:

rvm osx-ssl-certs status all
rvm osx-ssl-certs update all

and

export SSL_CERT_FILE=/etc/ssl/certs/ca-certificates.crt

the bundle complete ran!

Try to install Integrated Native Developer Experience
" Is a cross-architecture productivity suite that provides developers with tools, support, and IDE integration to create high-performance C++/Java* applications for Windows* on Intel® architecture, OS X on Intel® architecture and Android* on ARM* and Intel® architecture."

Integrated Native Developer Experience

When I had this error, it went away after I my computer crashed and restarted. Try closing and reopening your IDE, if that doesn't work, try restarting your computer. I had just installed the libraries at that point without restarting pycharm when I got this error.

Never closed PyCharm first to test because my blasted computer keeps crashing randomly... working on that one, but it at least solved this problem.. little victories.. :).

to show toast message you can use flutterToast plugin to use this plugin you have to

1. Add this dependency to your pubspec.yaml file :- fluttertoast: ^3.1.0
2. to get the package you have to run this command :- $ flutter packages get
3. import the package :- import 'package:fluttertoast/fluttertoast.dart';

use it like this

Fluttertoast.showToast(
        msg: "your message",
        toastLength: Toast.LENGTH_SHORT,
        gravity: ToastGravity.BOTTOM // also possible "TOP" and "CENTER"
        backgroundColor: "#e74c3c",
        textColor: '#ffffff');

For more info check this

update q
set q.QuestionID = a.QuestionID
from QuestionTrackings q
inner join QuestionAnswers a
on q.AnswerID = a.AnswerID
where q.QuestionID is null -- and other conditions you might want

I recommend to check what the result set to update is before running the update (same query, just with a select):

select *
from QuestionTrackings q
inner join QuestionAnswers a
on q.AnswerID = a.AnswerID
where q.QuestionID is null -- and other conditions you might want

Particularly whether each answer id has definitely only 1 associated question id.

Just adding a bit of extra information here in case someone has the same issue as me.

I use namespaces in my code and I had a class with a function that throws an Exception.

However my try/catch code in another class file was completely ignored and the normal PHP error for an uncatched exception was thrown.

Turned out I forgot to add "use \Exception;" at the top, adding that solved the error.

Ensure that your network is brought down before loading module:

sudo stop networking

It helped me - https://help.ubuntu.com/community/UbuntuBonding

WITH RECOVERY option is used by default when RESTORE DATABASE/RESTORE LOG commands is executed. If you're stuck in "restoring" process you can bring back a database to online state by executing:

RESTORE DATABASE YourDB WITH RECOVERY
GO

If there's a need for multiple files restoring, CLI commands requires WITH NORECOVERY and WITH RECOVERY respectively - only the last file in command should have WITH RECOVERY to bring back the database online:

RESTORE DATABASE YourDB FROM DISK = 'Z:\YourDB.bak'
WITH NORECOVERY
GO
RESTORE LOG YourDB FROM DISK = 'Z:\YourDB.trn'
WITH RECOVERY
GO

You can use SQL Server Management Studio wizard also:

There is also virtual restoring process, but you'll have to use 3rd party solutions. Usually you can use a database backup as live online database. ApexSQL and Idera has their own solutions. Review by SQL Hammer about ApexSQL Restore. Virtual restoring is good solution if you're dealing with large numbers of backups. Restore process is much faster and also can save a lot of space on disk drive. You can take a look on infographic here for some comparison.

As i mentioned here

initially set the field type to text.

on focus change it to type date

From wiki.answers.com:

The term declaration means (in C) that you are telling the compiler about type, size and in case of function declaration, type and size of its parameters of any variable, or user defined type or function in your program. No space is reserved in memory for any variable in case of declaration. However compiler knows how much space to reserve in case a variable of this type is created.

for example, following are all declarations:

extern int a; 
struct _tagExample { int a; int b; }; 
int myFunc (int a, int b);

Definition on the other hand means that in additions to all the things that declaration does, space is also reserved in memory. You can say "DEFINITION = DECLARATION + SPACE RESERVATION" following are examples of definition:

int a; 
int b = 0; 
int myFunc (int a, int b) { return a + b; } 
struct _tagExample example; 

see Answers.

Proxy support and the Host field:

HTTP 1.1 has a required Host header by spec.

HTTP 1.0 does not officially require a Host header, but it doesn't hurt to add one, and many applications (proxies) expect to see the Host header regardless of the protocol version.

Example:

GET / HTTP/1.1
Host: www.blahblahblahblah.com

This header is useful because it allows you to route a message through proxy servers, and also because your web server can distinguish between different sites on the same server.

So this means if you have blahblahlbah.com and helohelohelo.com both pointing to the same IP. Your web server can use the Host field to distinguish which site the client machine wants.

Persistent connections:

HTTP 1.1 also allows you to have persistent connections which means that you can have more than one request/response on the same HTTP connection.

In HTTP 1.0 you had to open a new connection for each request/response pair. And after each response the connection would be closed. This lead to some big efficiency problems because of TCP Slow Start.

OPTIONS method:

HTTP/1.1 introduces the OPTIONS method. An HTTP client can use this method to determine the abilities of the HTTP server. It's mostly used for Cross Origin Resource Sharing in web applications.

Caching:

HTTP 1.0 had support for caching via the header: If-Modified-Since.

HTTP 1.1 expands on the caching support a lot by using something called 'entity tag'. If 2 resources are the same, then they will have the same entity tags.

HTTP 1.1 also adds the If-Unmodified-Since, If-Match, If-None-Match conditional headers.

There are also further additions relating to caching like the Cache-Control header.

100 Continue status:

There is a new return code in HTTP/1.1 100 Continue. This is to prevent a client from sending a large request when that client is not even sure if the server can process the request, or is authorized to process the request. In this case the client sends only the headers, and the server will tell the client 100 Continue, go ahead with the body.

Much more:

• Digest authentication and proxy authentication
• Extra new status codes
• Chunked transfer encoding
• Connection header
• Enhanced compression support
• Much much more.

This is by far the most general and performant solution; surprised it hasn't been posted yet.

import numpy as np

def unique_count(a):
    unique, inverse = np.unique(a, return_inverse=True)
    count = np.zeros(len(unique), np.int)
    np.add.at(count, inverse, 1)
    return np.vstack(( unique, count)).T

print unique_count(np.random.randint(-10,10,100))

Unlike the currently accepted answer, it works on any datatype that is sortable (not just positive ints), and it has optimal performance; the only significant expense is in the sorting done by np.unique.

TL;DR ...and late to the party, but that short explanation might help future googlers..

In general that error message means that the replacement doesn't fit into the corresponding column of the dataframe.

A minimal example:

df <- data.frame(a = 1:2); df$a <- 1:3

throws the error

Error in $<-.data.frame(*tmp*, a, value = 1:3) : replacement has 3 rows, data has 2

which is clear, because the vector a of df has 2 entries (rows) whilst the vector we try to replace it has 3 entries (rows).

use this for custom dismissal

var dismissKeyboard = require('dismissKeyboard');

var TestView = React.createClass({
    render: function(){
        return (
            <TouchableWithoutFeedback 
                onPress={dismissKeyboard}>
                <View />
            </TouchableWithoutFeedback>
        )
    }
})

Both classes Rectangle and Ellipse need to override both of the abstract methods.

To work around this, you have 3 options:

• Add the two methods
• Make each class that extends Shape abstract

• Have a single method that does the function of the classes that will extend Shape, and override that method in Rectangle and Ellipse, for example:

  abstract class Shape {
      // ...
      void draw(Graphics g);
  }
  

And

    class Rectangle extends Shape {
        void draw(Graphics g) {
            // ...
        }
    }

Finally

    class Ellipse extends Shape {
        void draw(Graphics g) {
            // ...
        }
    }

And you can switch in between them, like so:

    Shape shape = new Ellipse();
    shape.draw(/* ... */);

    shape = new Rectangle();
    shape.draw(/* ... */);

Again, just an example.

I had the same Problem. I had start my Oracle TNS Listener, then it works normally again.

See LISTENER: TNS-12545 ... No such file or directory.

I solved a similar case by setting the inner item's style to margin: 0 auto.
Situation: My menu usually contains three buttons, in which case they need to be justify-content: space-between. But when there's only one button, it will now be center aligned instead of to the left.

This turned out to NOT be a bower problem, though it showed up for me with bower.

It seems to be a node-which problem. If a file is in the path, but has the setuid/setgid bit set, which will not find it.

Here is a files with the s bit set: (unix 'which' will find it with no problems).

ls -al /usr/local/bin -rwxrwsr-- 110 root nmt 5535636 Jul 17 2012 git

Here is a node-which attempt:

> which.sync('git')
Error: not found: git

I change the permissions (chomd 755 git). Now node-which can find it.

> which.sync('git')
'/usr/local/bin/git'

Hope this helps.

You can always format a date by extracting the parts and combine them using string functions:

var date = new Date();_x000D_
var dateStr =_x000D_
  ("00" + (date.getMonth() + 1)).slice(-2) + "/" +_x000D_
  ("00" + date.getDate()).slice(-2) + "/" +_x000D_
  date.getFullYear() + " " +_x000D_
  ("00" + date.getHours()).slice(-2) + ":" +_x000D_
  ("00" + date.getMinutes()).slice(-2) + ":" +_x000D_
  ("00" + date.getSeconds()).slice(-2);_x000D_
console.log(dateStr);

The server_name^docs directive is used to identify virtual hosts, they're not used to set the binding.

netstat tells you that nginx listens on 0.0.0.0:80 which means that it will accept connections from any IP.

If you want to change the IP nginx binds on, you have to change the listen^docs rule.
So, if you want to set nginx to bind to localhost, you'd change that to:

listen 127.0.0.1:80;

In this way, requests that are not coming from localhost are discarded (they don't even hit nginx).

There is an important detail that has been omitted in the answer above.

MySQL imposes a limit of 65,535 bytes for the max size of each row. The size of a VARCHAR column is counted towards the maximum row size, while TEXT columns are assumed to be storing their data by reference so they only need 9-12 bytes. That means even if the "theoretical" max size of your VARCHAR field is 65,535 characters you won't be able to achieve that if you have more than one column in your table.

Also note that the actual number of bytes required by a VARCHAR field is dependent on the encoding of the column (and the content). MySQL counts the maximum possible bytes used toward the max row size, so if you use a multibyte encoding like utf8mb4 (which you almost certainly should) it will use up even more of your maximum row size.

Correction: Regardless of how MySQL computes the max row size, whether or not the VARCHAR/TEXT field data is ACTUALLY stored in the row or stored by reference depends on your underlying storage engine. For InnoDB the row format affects this behavior. (Thanks Bill-Karwin)

Reasons to use TEXT:

• If you want to store a paragraph or more of text
• If you don't need to index the column
• If you have reached the row size limit for your table

Reasons to use VARCHAR:

• If you want to store a few words or a sentence
• If you want to index the (entire) column
• If you want to use the column with foreign-key constraints

Here is another solution which uses any/2

map(select(any(.Names[]; contains("data"))|not)|.Id)[]

with the sample data and the -r option it produces

cb94e7a42732b598ad18a8f27454a886c1aa8bbba6167646d8f064cd86191e2b
a4b7e6f5752d8dcb906a5901f7ab82e403b9dff4eaaeebea767a04bac4aada19

You should try and avoid jQuery in ReactJS. But if you really want to use it, you'd put it in componentDidMount() lifecycle function of the component.

e.g.

class App extends React.Component {
  componentDidMount() {
    // Jquery here $(...)...
  }

  // ...
}

Ideally, you'd want to create a reusable Accordion component. For this you could use Jquery, or just use plain javascript + CSS.

class Accordion extends React.Component {
  constructor() {
    super();
    this._handleClick = this._handleClick.bind(this);
  }

  componentDidMount() {
    this._handleClick();
  }

  _handleClick() {
    const acc = this._acc.children;
    for (let i = 0; i < acc.length; i++) {
      let a = acc[i];
      a.onclick = () => a.classList.toggle("active");
    }
  }

  render() {
    return (
      <div 
        ref={a => this._acc = a} 
        onClick={this._handleClick}>
        {this.props.children}
      </div>
    )
  }
}

Then you can use it in any component like so:

class App extends React.Component {
  render() {
    return (
      <div>
        <Accordion>
          <div className="accor">
            <div className="head">Head 1</div>
            <div className="body"></div>
          </div>
        </Accordion>
      </div>
    );
  }
}

Codepen link here: https://codepen.io/jzmmm/pen/JKLwEA?editors=0110 (I changed this link to https ^)

I would do this:

data["list"].append({'b':'2'})

so simply you are adding an object to the list that is present in "data"

You can create your own custom config section in the app.config file. There are quite a few tutorials around to get you started. Ultimately, you could have something like this:

<configSections>
    <section name="backupDirectories" type="TestReadMultipler2343.BackupDirectoriesSection, TestReadMultipler2343" />
  </configSections>

<backupDirectories>
   <directory location="C:\test1" />
   <directory location="C:\test2" />
   <directory location="C:\test3" />
</backupDirectories>

To complement Richard's answer, this is the C# you could use with his sample configuration:

using System.Collections.Generic;
using System.Configuration;
using System.Xml;

namespace TestReadMultipler2343
{
    public class BackupDirectoriesSection : IConfigurationSectionHandler
    {
        public object Create(object parent, object configContext, XmlNode section)
        {
            List<directory> myConfigObject = new List<directory>();

            foreach (XmlNode childNode in section.ChildNodes)
            {
                foreach (XmlAttribute attrib in childNode.Attributes)
                {
                    myConfigObject.Add(new directory() { location = attrib.Value });
                }
            }
            return myConfigObject;
        }
    }

    public class directory
    {
        public string location { get; set; }
    }
}

Then you can access the backupDirectories configuration section as follows:

List<directory> dirs = ConfigurationManager.GetSection("backupDirectories") as List<directory>;

For me solution looks like:

1. ctrl+b q to show pane numbers.
2. ctrl+b x to kill pane.

Killing last pane will kill window.

There's no magical solution of displaying something outside an overflow hidden container.

A similar effect can be achieved by having an absolute positioned div that matches the size of its parent by positioning it inside your current relative container (the div you don't wish to clip should be outside this div):

#1 .mask {
  width: 100%;
  height: 100%;
  position: absolute;
  z-index: 1;
  overflow: hidden;
}

Take in mind that if you only have to clip content on the x axis (which appears to be your case, as you only have set the div's width), you can use overflow-x: hidden.

You have Full data + Transaction log backups, right? You can restore to another Database from backups and then sync the deleted rows back. Lots of work though...

(Have you looked at Redgate's SQL Log Rescue? Update: it's SQL Server 2000 only)

There is Log Explorer

Sure, you just call it from within the SP, there's no special syntax.

Ex:

   PROCEDURE some_sp
   AS
   BEGIN
      some_other_sp('parm1', 10, 20.42);
   END;

If the procedure is in a different schema than the one the executing procedure is in, you need to prefix it with schema name.

   PROCEDURE some_sp
   AS
   BEGIN
      other_schema.some_other_sp('parm1', 10, 20.42);
   END;

If you want to terminate the thread, then just returning is fine. You do NOT need to call Thread.currentThread().interrupt() (it will not do anything bad though. It's just that you don't need to.) This is because interrupt() is basically used to notify the owner of the thread (well, not 100% accurate, but sort of). Because you are the owner of the thread, and you decided to terminate the thread, there is no one to notify, so you don't need to call it.

By the way, why in the first case we need to use currentThread? Is Thread does not refer to the current thread?

Yes, it doesn't. I guess it can be confusing because e.g. Thread.sleep() affects the current thread, but Thread.sleep() is a static method.

If you are NOT the owner of the thread (e.g. if you have not extended Thread and coded a Runnable etc.) you should do

Thread.currentThread().interrupt();
return;

This way, whatever code that called your runnable will know the thread is interrupted = (normally) should stop whatever it is doing and terminate. As I said earlier, it is just a mechanism of communication though. The owner might simply ignore the interrupted status and do nothing.. but if you do set the interrupted status, somebody might thank you for that in the future.

For the same reason, you should never do

Catch(InterruptedException ie){
     //ignore
}

Because if you do, you are stopping the message there. Instead one should do

Catch(InterruptedException ie){
    Thread.currentThread().interrupt();//preserve the message
    return;//Stop doing whatever I am doing and terminate
}

I am using Debian 8 live off a USB. I was locked out of the system after 10 min of inactivity. The password that was required to log back in to the system for the user was:

login : Debian Live User
password : live

I hope this helps

In my Controller, I merely added an HttpServletResponse parameter and manually added the headers, no filter or intercept required and it works fine:

httpServletResponse.setHeader("Access-Control-Allow-Origin", "*");
httpServletResponse.setHeader("Access-Control-Allow-Methods", "GET, OPTIONS");
httpServletResponse.setHeader("Access-Control-Allow-Headers","Origin, X-Requested-With, Content-Type, Accept, X-Auth-Token, X-Csrf-Token, WWW-Authenticate, Authorization");
httpServletResponse.setHeader("Access-Control-Allow-Credentials", "false");
httpServletResponse.setHeader("Access-Control-Max-Age", "3600");

You can open the PDF file and extract its contents using the Adobe library (which I believe you can download from Adobe as part of the SDK, but it comes with certain versions of Acrobat as well)

Make sure to add the Library to your references too (On my machine it is the Adobe Acrobat 10.0 Type Library, but not sure if that is the newest version)

Even with the Adobe library it is not trivial (you'll need to add your own error-trapping etc):

Function getTextFromPDF(ByVal strFilename As String) As String
   Dim objAVDoc As New AcroAVDoc
   Dim objPDDoc As New AcroPDDoc
   Dim objPage As AcroPDPage
   Dim objSelection As AcroPDTextSelect
   Dim objHighlight As AcroHiliteList
   Dim pageNum As Long
   Dim strText As String

   strText = ""
   If (objAvDoc.Open(strFilename, "") Then
      Set objPDDoc = objAVDoc.GetPDDoc
      For pageNum = 0 To objPDDoc.GetNumPages() - 1
         Set objPage = objPDDoc.AcquirePage(pageNum)
         Set objHighlight = New AcroHiliteList
         objHighlight.Add 0, 10000 ' Adjust this up if it's not getting all the text on the page
         Set objSelection = objPage.CreatePageHilite(objHighlight)

         If Not objSelection Is Nothing Then
            For tCount = 0 To objSelection.GetNumText - 1
               strText = strText & objSelection.GetText(tCount)
            Next tCount
         End If
      Next pageNum
      objAVDoc.Close 1
   End If

   getTextFromPDF = strText

End Function

What this does is essentially the same thing you are trying to do - only using Adobe's own library. It's going through the PDF one page at a time, highlighting all of the text on the page, then dropping it (one text element at a time) into a string.

Keep in mind what you get from this could be full of all kinds of non-printing characters (line feeds, newlines, etc) that could even end up in the middle of what look like contiguous blocks of text, so you may need additional code to clean it up before you can use it.

Hope that helps!

-- This will exclude files and traverse through 1 level of sub folders in the root

def list_files(dir):
    List = []
    filterstr = ' '
    for root, dirs, files in os.walk(dir, topdown = True):
        #r.append(root)
        if (root == dir):
            pass
        elif filterstr in root:
            #filterstr = ' '
            pass
        else:
            filterstr = root
            #print(root)
            for name in files:
                print(root)
                print(dirs)
                List.append(os.path.join(root,name))
            #print(os.path.join(root,name),"\n")
                print(List,"\n")

    return List

I usually create a global function called is_empty() just to get around this issue

function is_empty($var)
{ 
 return empty($var);
}

Then anywhere I would normally have used empty() I just use is_empty()

Try using the WebConfigurationManager class instead. For example:

string userName = WebConfigurationManager.AppSettings["PFUserName"]

Building on Jeff's answer, your first step would be to create a canvas representation of your PNG. The following creates an off-screen canvas that is the same width and height as your image and has the image drawn on it.

var img = document.getElementById('my-image');
var canvas = document.createElement('canvas');
canvas.width = img.width;
canvas.height = img.height;
canvas.getContext('2d').drawImage(img, 0, 0, img.width, img.height);

After that, when a user clicks, use event.offsetX and event.offsetY to get the position. This can then be used to acquire the pixel:

var pixelData = canvas.getContext('2d').getImageData(event.offsetX, event.offsetY, 1, 1).data;

Because you are only grabbing one pixel, pixelData is a four entry array containing the pixel's R, G, B, and A values. For alpha, anything less than 255 represents some level of transparency with 0 being fully transparent.

Here is a jsFiddle example: http://jsfiddle.net/thirtydot/9SEMf/869/ I used jQuery for convenience in all of this, but it is by no means required.

Note: getImageData falls under the browser's same-origin policy to prevent data leaks, meaning this technique will fail if you dirty the canvas with an image from another domain or (I believe, but some browsers may have solved this) SVG from any domain. This protects against cases where a site serves up a custom image asset for a logged in user and an attacker wants to read the image to get information. You can solve the problem by either serving the image from the same server or implementing Cross-origin resource sharing.

Best way i use:

1- add link to your html:

<a id="linkDynamic" target="_blank" href="#"></a>

2- add JS function:

function OpenNewTab(href)
{
    document.getElementById('linkDynamic').href = href;
    document.getElementById('linkDynamic').click();
}

3- just call OpenNewTab function with the link you want

JavaFX8

I'm adding new Item by a DialogBox. Here is my code.

ObservableList<Area> area = FXCollections.observableArrayList();

At initialize() or setApp()

this.areaTable.setItems(getAreaData());

getAreaData()

private ObservableList<Area> getAreaData() {
    try {
        area = AreaDAO.searchEmployees(); // To inform ObservableList
        return area;
    } catch (ClassNotFoundException | SQLException e) {
        System.out.println("Error: " + e);
        return null;
    }
}

Add by dialog box.

@FXML
private void handleNewArea() {
    Area tempArea = new Area();
    boolean okClicked = showAreaDialog(tempArea);
    if (okClicked) {
        addNewArea(tempArea);
        this.area.add(tempArea); // To inform ObservableList
    }

}

Area is an ordinary JavaFX POJO. Hope this helps someone.

Stashing just the index (staged changes) in Git is more difficult than it should be. I've found @Joe's answer to work well, and turned a minor variation of it into this alias:

stash-index = "!f() { \
  git stash push --quiet --keep-index -m \"temp for stash-index\" && \
  git stash push \"$@\" && \
  git stash pop --quiet stash@{1} && \
  git stash show -p | git apply -R; }; f"

It pushes both the staged and unstaged changes into a temporary stash, leaving the staged changes alone. It then pushes the staged changes into the stash, which is the stash we want to keep. Arguments passed to the alias, such as --message "whatever" will be added to this stash command. Finally, it pops the temporary stash to restore the original state and remove the temporary stash, and then finally "removes" the stashed changes from the working directory via a reverse patch application.

For the opposite problem of stashing just the unstaged changes (alias stash-working) see this answer.

what tends to happen in large organizations is that over time everything is either monolithic or disparate systems everywhere or a little of both. Someone eventually comes in and says we've got a mess. Now, you want to re-design (money to someone) everything to be oriented in a sort of monotlithic depends on who you pay paradigm but at the same time be able to add pieces and parts independently of the master/monolith.

So you buy Oracle's SOA and Oracle becomes the boss of all your parts. All the other players coming in have to work with SOA via a service (web service or whatever it has.) The Oracle monolith takes care of everything (monolith is not meant derogatory). Oh yeah, you got ASP.NET MVC on the front or something else.

main thing is moving things in and out of they system without impact and keeping the vendor Oracle SOA, Microsoft WCF, as the brains of it all. everything's all oop/ood like, fluid, things moving in and out with little to no impact, even human services, not just computers.

To me it just means a bunch of web services (or whatever we call them in the future) with a good front end. And if you own the database just hit the database and stop worrying about buzzwords. it's okay.

I think you forgot the generic type definition:

public T GetEnumValue<T>(int intValue) where T : struct, IConvertible // <T> added

and you can improve it to be most convinient like e.g.:

public static T ToEnum<T>(this string enumValue) : where T : struct, IConvertible
{
    return (T)Enum.Parse(typeof(T), enumValue);
}

then you can do:

TestEnum reqValue = "Value1".ToEnum<TestEnum>();

XCODE 8, SWIFT 3.0

From grokswift

Creating URLs from strings is a minefield for bugs. Just miss a single / or accidentally URL encode the ? in a query and your API call will fail and your app won’t have any data to display (or even crash if you didn’t anticipate that possibility). Since iOS 8 there’s a better way to build URLs using NSURLComponents and NSURLQueryItems.

func createURLWithComponents() -> URL? {
    var urlComponents = URLComponents()
    urlComponents.scheme = "http"
    urlComponents.host = "maps.googleapis.com"
    urlComponents.path = "/maps/api/geocode/json"

    let addressQuery = URLQueryItem(name: "address", value: "American Tourister, Abids Road, Bogulkunta, Hyderabad, Andhra Pradesh, India")
    urlComponents.queryItems = [addressQuery]

    return urlComponents.url
}

Below is the code to access url using guard statement.

guard let url = createURLWithComponents() else {
            print("invalid URL")
            return nil
      }
      print(url)

Output:

http://maps.googleapis.com/maps/api/geocode/json?address=American%20Tourister,%20Abids%20Road,%20Bogulkunta,%20Hyderabad,%20Andhra%20Pradesh,%20India

Read More: Building URLs With NSURLComponents and NSURLQueryItems

The same problem exists in Visual Studio, here's how to fix it there:

Go to:

Tools > Options > SQL Server Tools > Transact-SQL Editor > Query Results > Results To Grid

Now click the check box to true: "Include column headers when copying or saving the results"

Since you are copying tha same data to all rows, you don't actually need to loop at all. Try this:

Sub ARRAYER()
    Dim Number_of_Sims As Long
    Dim rng As Range

    Application.Calculation = xlCalculationManual
    Application.ScreenUpdating = False
    Number_of_Sims = 100000

    Set rng = Range("C4:G4")
    rng.Offset(1, 0).Resize(Number_of_Sims) = rng.Value

    Application.Calculation = xlCalculationAutomatic
    Application.ScreenUpdating = True
End Sub

Another approach to this is to use my service, http://ipinfo.io, which returns the city, region and country name based on the user's current IP address. Here's a simple example:

$.get("http://ipinfo.io", function(response) {
    console.log(response.city, response.country);
}, "jsonp");

Here's a more detailed JSFiddle example that also prints out the full response information, so you can see all of the available details: http://jsfiddle.net/zK5FN/2/

You're attempting to access indicies within an array which are not set. This raises a notice.

Mostly likely you're noticing it now because your code has moved to a server where php.ini has error_reporting set to include E_NOTICE. Either suppress notices by setting error_reporting to E_ALL & ~E_NOTICE (not recommended), or verify that the index exists before you attempt to access it:

$month = array_key_exists('month', $_POST) ? $_POST['month'] : null;

I don't believe AJAX can handle file uploads but this can be achieved with libraries that leverage flash. Another advantage of the flash implementation is the ability to do multiple files at once (like gmail).

SWFUpload is a good start : http://www.swfupload.org/documentation

jQuery and some of the other libraries have plugins that leverage SWFUpload. On my last project we used SWFUpload and Java without a problem.

Also helpful and worth looking into is Apache's FileUpload : http://commons.apache.org/fileupload/index.html

The only way you can read a variable amount of data from stdin is using loops. I've always found that the std::getline() function works very well:

std::string line;
while (std::getline(std::cin, line))
{
    std::cout << line << std::endl;
}

By default getline() reads until a newline. You can specify an alternative termination character, but EOF is not itself a character so you cannot simply make one call to getline().

SimpleDateFormat format1 = new SimpleDateFormat("yyyy/MM/dd");
System.out.println(format1.format(date));

Try this:

Since you are fetching based on a single column value you can simplify your query likewise:

$reservations = Reservation::whereBetween('reservation_from', array($from, $to))->get();

Retrieve based on condition: laravel docs

Hope this helped.

DEMO

var obj=[
        {
            id : "001",
            name : "apple",
            category : "fruit",
            color : "red"
        },
        {
            id : "002",
            name : "melon",
            category : "fruit",
            color : "green"
        },
        {
            id : "003",
            name : "banana",
            category : "fruit",
            color : "yellow"
        }
    ]
    var tbl=$("<table/>").attr("id","mytable");
    $("#div1").append(tbl);
    for(var i=0;i<obj.length;i++)
    {
        var tr="<tr>";
        var td1="<td>"+obj[i]["id"]+"</td>";
        var td2="<td>"+obj[i]["name"]+"</td>";
        var td3="<td>"+obj[i]["color"]+"</td></tr>";

       $("#mytable").append(tr+td1+td2+td3); 

    }   

>>> import random
>>> random.randrange(5,60,5)

should work in any Python >= 2.

Fixed in NPM 5.6.0

Upgrade to NPM 5.6.0 solved problem for me.

The file .bashrc is read when you start an interactive shell. This is the file that you should update. E.g:

export PATH=$PATH:/opt/ActiveTcl-8.5/bin

Restart the shell for the changes to take effect or source it, i.e.:

source .bashrc

The Python Tutorial simply calls it 'the *-operator'. It performs unpacking of arbitrary argument lists.

Kindly find below one liner bash script command to find all broken symbolic links recursively in any linux based OS

a=$(find / -type l); for i in $(echo $a); do file $i ; done |grep -i broken 2> /dev/null

You could alter your CSS to render them less obtrusively, e.g.

div p,
div br {
    display: inline;
}

http://jsfiddle.net/zG9Ax/

or - as my commenter points out:

div br {
    display: none;
}

but then to achieve the example of what you want, you'll need to trim the p down, so:

div br {
    display: none;
}
div p {
    padding: 0;
    margin: 0;
}

http://jsfiddle.net/zG9Ax/1

Are you thinking about something like this?

$('ul li').each(function(i)
{
   $(this).attr('rel'); // This is your rel value
});

Your problem is with the return type of the function - it must be:

char *myFunction()

...and then your original formulation will work.

Note that you cannot have C strings without pointers being involved, somewhere along the line.

Also: Turn up your compiler warnings. It should have warned you about that return line converting a char * to char without an explicit cast.

Try the following:

var myToolBar = UIToolbar.init(frame: CGRect.init(x: 0, y: 0, width: 320, height: 44))

This is for the swift's latest version

Sorry for the belabored question. To solve my problem I just told apache 2.4 to listen to a different port in httpd.conf. Since System was using pid 4 which was listening on port 80, I did not want to explore this any further.

I put the following into httpd.conf. Listen 127.0.0.1:122

In version 1.28 of Visual Studio Code "files.exclude" must be placed within a settings node.

Resulting in a workspace file that looks like:

{
    "settings": {
        "files.exclude": {
            "**/node_modules": true
        }
    }
}

I answered a similar question here.

In the Project’s Settings, add /FORCE:MULTIPLE to the Linker’s Command Line options.

From MSDN: "Use /FORCE:MULTIPLE to create an output file whether or not LINK finds more than one definition for a symbol."

That's what programmers call a "quick and dirty" solution, but sometimes you just want the build to be completed and get to the bottom of the problem later, so that's kind of a ad-hoc solution. To actually avoid this error, provided that you want

int WIDTH = 1024;
int HEIGHT = 800;

to be shared among several source files, just declare them only in a single .c / .cpp file, and refer to them in a header file:

extern int WIDTH;
extern int HEIGHT;

Then include the header in any other source file you wish these global variables to be available.

IteratorUtils from commons-collections may help (although they don't support generics in the latest stable version 3.2.1):

@SuppressWarnings("unchecked")
Collection<Type> list = IteratorUtils.toList(iterable.iterator());

Version 4.0 (which is in SNAPSHOT at this moment) supports generics and you can get rid of the @SuppressWarnings.

Update: Check IterableAsList from Cactoos.

I am using this for checking for key presses, can't get much simpler:

#!/usr/bin/python3
# -*- coding: UTF-8 -*-

import curses, time

def main(stdscr):
    """checking for keypress"""
    stdscr.nodelay(True)  # do not wait for input when calling getch
    return stdscr.getch()

while True:
    print("key:", curses.wrapper(main)) # prints: 'key: 97' for 'a' pressed
                                        # '-1' on no presses
    time.sleep(1)

While curses is not working on windows, there is a 'unicurses' version, supposedly working on Linux, Windows, Mac but I could not get this to work

Using pytz

from datetime import datetime
from pytz import timezone

fmt = "%Y-%m-%d %H:%M:%S %Z%z"
timezonelist = ['UTC','US/Pacific','Europe/Berlin']
for zone in timezonelist:

    now_time = datetime.now(timezone(zone))
    print now_time.strftime(fmt)

You can also use select(2) if you want microsecond precision (this works on platform that don't have usleep(3))

The following code will wait for 1.5 second:

#include <sys/select.h>
#include <sys/time.h>
#include <unistd.h>`

int main() {
    struct timeval t;
    t.tv_sec = 1;
    t.tv_usec = 500000;
    select(0, NULL, NULL, NULL, &t);
}

`

CGI is an interface which tells the webserver how to pass data to and from an application. More specifically, it describes how request information is passed in environment variables (such as request type, remote IP address), how the request body is passed in via standard input, and how the response is passed out via standard output. You can refer to the CGI specification for details.

To use your image:

user (client) request for page ---> webserver ---[CGI]----> Server side Program ---> MySQL Server.

Most if not all, webservers can be configured to execute a program as a 'CGI'. This means that the webserver, upon receiving a request, will forward the data to a specific program, setting some environment variables and marshalling the parameters via standard input and standard output so the program can know where and what to look for.

The main benefit is that you can run ANY executable code from the web, given that both the webserver and the program know how CGI works. That's why you could write web programs in C or Bash with a regular CGI-enabled webserver. That, and that most programming environments can easily use standard input, standard output and environment variables.

In your case you most likely used another, specific for PHP, means of communication between your scripts and the webserver, this, as you well mention in your question, is an embedded interpreter called mod_php.

So, answering your questions:

What exactly is CGI?

See above.

Whats the big deal with /cgi-bin/*.cgi? Whats up with this? I don't know what is this cgi-bin directory on the server for. I don't know why they have *.cgi extensions.

That's the traditional place for cgi programs, many webservers come with this directory pre configured to execute all binaries there as CGI programs. The .cgi extension denotes an executable that is expected to work through the CGI.

Why does Perl always comes in the way. CGI & Perl (language). I also don't know whats up with these two. Almost all the time I keep hearing these two in combination "CGI & Perl". This book is another great example CGI Programming with Perl Why not "CGI Programming with PHP/JSP/ASP". I never saw such things.

Because Perl is ancient (older than PHP, JSP and ASP which all came to being when CGI was already old, Perl existed when CGI was new) and became fairly famous for being a very good language to serve dynamic webpages via the CGI. Nowadays there are other alternatives to run Perl in a webserver, mainly mod_perl.

CGI Programming in C this confuses me a lot. in C?? Seriously?? I don't know what to say. I"m just confused. "in C"?? This changes everything. Program needs to be compiled and executed. This entirely changes my view of web programming. When do I compile? How does the program gets executed (because it will be a machine code, so it must execute as a independent process). How does it communicate with the web server? IPC? and interfacing with all the servers (in my example MATLAB & MySQL) using socket programming? I'm lost!!

You compile the executable once, the webserver executes the program and passes the data in the request to the program and outputs the received response. CGI specifies that one program instance will be launched per each request. This is why CGI is inefficient and kind of obsolete nowadays.

They say that CGI is deprecated. Its no more in use. Is it so? What is its latest update?

CGI is still used when performance is not paramount and a simple means of executing code is required. It is inefficient for the previously stated reasons and there are more modern means of executing any program in a web enviroment. Currently the most famous is FastCGI.

There should be a binary called "pip2.7" installed at some location included within your $PATH variable.

You can find that out by typing

which pip2.7

This should print something like '/usr/local/bin/pip2.7' to your stdout. If it does not print anything like this, it is not installed. In that case, install it by running

$ wget https://bootstrap.pypa.io/get-pip.py
$ sudo python2.7 get-pip.py

Now, you should be all set, and

which pip2.7

should return the correct output.

The NA can actually be due to 2 reasons. One is that there is a NA in your data. Another one is due to there being one of the values being constant. This results in standard deviation being equal to zero and hence the cor function returns NA.

You can use std::make_pair

revenue.push_back(std::make_pair("string",map[i].second));

Replace all commas with underscore in the column names

data.columns= data.columns.str.replace(' ','_',regex=True)

If one want to keep getting updated processes (on the example, 2 seconds) on a shell session without having to manually interact with it use:

watch -n 2 'mysql -h 127.0.0.1 -P 3306 -u some_user -psome_pass some_database -e "show full processlist;"'

The only bad thing about the show [full] processlist is that you can't filter the output result. On the other hand, issuing the SELECT * FROM INFORMATION_SCHEMA.PROCESSLIST open possibilities to remove from the output anything you don't want to see:

SELECT * from INFORMATION_SCHEMA.PROCESSLIST
WHERE DB = 'somedatabase'
AND COMMAND <> 'Sleep'
AND HOST NOT LIKE '10.164.25.133%' \G

I tried replacing value with Value and it worked out. It has set the value in input tag now.

Assuming that "a" and "b" are bean properties

rendered="#{bean.a==12 and (bean.b==13 or bean.b==15)}"

You may look at JSF EL operators

Your title question and your example are completely different. I'll start by answering the title question:

$("a").removeAttr("href");

And as far as not requiring an href, the generally accepted way of doing this is:

<a href"#" onclick="doWork(); return false;">link</a>

The return false is necessary so that the href doesn't actually go anywhere.

I had this issue because the tutorial code I was trying to run wasn't in the correct package even though I had typed in the package name at the top of each class.

I right-clicked each class, Refactor and Move To and accepted the package name suggestion.

Then as usual, Run As... Java Application.

And it worked :)

For detect loaded html (from server) inserted into DOM use MutationObserver or detect moment in your loadContent function when data are ready to use

let ignoreFirstChange = 0;_x000D_
let observer = (new MutationObserver((m, ob)=>_x000D_
{_x000D_
  if(ignoreFirstChange++ > 0) console.log('Element added on', new Date());_x000D_
}_x000D_
)).observe(content, {childList: true, subtree:true });_x000D_
_x000D_
_x000D_
// TEST: simulate element loading_x000D_
let tmp=1;_x000D_
function loadContent(name) {  _x000D_
  setTimeout(()=>{_x000D_
    console.log(`Element ${name} loaded`)_x000D_
    content.innerHTML += `<div>My name is ${name}</div>`; _x000D_
  },1500*tmp++)_x000D_
}; _x000D_
_x000D_
loadContent('Senna');_x000D_
loadContent('Anna');_x000D_
loadContent('John');

<div id="content"><div>

I think this will be much simpler for beginners in JavaScript

    //The function checks if the password and confirm password match
    // Then disables the submit button for mismatch but enables if they match
            function checkPass()
            {
                //Store the password field objects into variables ...
                var pass1 = document.getElementById("register-password");
                var pass2 = document.getElementById("confirm-password");
                //Store the Confimation Message Object ...
                var message = document.getElementById('confirmMessage');
                //Set the colors we will be using ...
                var goodColor = "#66cc66";
                var badColor = "#ff6666";
                //Compare the values in the password field 
                //and the confirmation field
                if(pass1.value == pass2.value){
                    //The passwords match. 
                    //Set the color to the good color and inform
                    //the user that they have entered the correct password 
                    pass2.style.backgroundColor = goodColor;
                    message.style.color = goodColor;
                    message.innerHTML = "Passwords Match!"
 //Enables the submit button when there's no mismatch                   
                    var tabPom = document.getElementById("btnSignUp");
                    $(tabPom ).prop('disabled', false);
                }else{
                    //The passwords do not match.
                    //Set the color to the bad color and
                    //notify the user.
                    pass2.style.backgroundColor = badColor;
                    message.style.color = badColor;
                    message.innerHTML = "Passwords Do Not Match!"
 //Disables the submit button when there's mismatch       
                    var tabPom = document.getElementById("btnSignUp");
                    $(tabPom ).prop('disabled', true);
                }
            } 

Documentation on UISwitch says:

[mySwitch setOn:NO]; 

In Interface Builder, select your switch and in the Attributes inspector you'll find State which can be set to on or off.

Took me a while to find this out but if you a number stored in a variable, say x and you want to select it, use

document.querySelector('a[data-a= + CSS.escape(x) + ']'). 

This is due to some attribute naming specifications that I'm not yet very familiar with. Hope this will help someone.

This problem was a plague to me!!! The 100% solution is to forget using the mysql module: import mysql.connector, instead use pymysql via import pymysql. I installed it via the instructions: python3 -m pip install PyMySQL

made a change to the: 1. Import statement 2. The connector 3. The cursor

After that everything worked like a charm. Hope this helps!

simple with generated links :) html:

<span class='preview' data-image-url="imageUrl.png" data-container="body" data-toggle="popover" data-placement="top" >preview</span>

js:

$('.preview').popover({
    'trigger':'hover',
    'html':true,
    'content':function(){
        return "<img src='"+$(this).data('imageUrl')+"'>";
    }
});

http://jsfiddle.net/A4zHC/

For linuxes I've figured out that ECU could be measured by sysbench:

sysbench --num-threads=128 --test=cpu --cpu-max-prime=50000 --max-requests=50000 run

Total time (t) should be calculated by formula:

ECU=1925/t

And my example test results:

|   instance type   |   time   |   ECU   |
|-------------------|----------|---------|
| m1.small          |  1735,62 |       1 |
| m3.xlarge         |   147,62 |      13 |
| m3.2xlarge        |    74,61 |      26 |
| r3.large          |   295,84 |       7 |
| r3.xlarge         |   148,18 |      13 |
| m4.xlarge         |   146,71 |      13 |
| m4.2xlarge        |    73,69 |      26 |
| c4.xlarge         |   123,59 |      16 |
| c4.2xlarge        |    61,91 |      31 |
| c4.4xlarge        |    31,14 |      62 |

This is because Oracle internally changes empty string to NULL values. Oracle simply won't let insert an empty string.

On the other hand, SQL Server would let you do what you are trying to achieve.

There are 2 workarounds here:

1. Use another column that states whether the 'description' field is valid or not
2. Use some dummy value for the 'description' field where you want it to store empty string. (i.e. set the field to be 'stackoverflowrocks' assuming your real data will never encounter such a description value)

Both are, of course, stupid workarounds :)

I agree with sorting using ORDER BY when populating with a database query, if all you want is to sort the displayed results alphabetically. Let the database engine do the work of sorting.

However, sometimes you want some other sort order besides alphabetical. For example, you might want a logical sequence like: New, Open, In Progress, Completed, Approved, Closed. In that case, you could add a column to the database table to explicitly set the sort order. Name it something like SortOrder or DisplaySortOrder. Then, in your SQL, you'd ORDER BY the sort order field (without retrieving that field).

You could use an extensive API of DataTable to reload it by ajax.reload()

If you declare your datatable as DataTable() (new version) you need:

var oTable = $('#filtertable_data').DataTable( );
// to reload
oTable.ajax.reload();

If you declare your datatable as dataTable() (old version) you need:

var oTable = $('#filtertable_data').dataTable( );
// to reload
oTable.api().ajax.reload();

Container sizes

@container-large-desktop
(1140px + @grid-gutter-width) -> (970px + @grid-gutter-width)

in section Container sizes, change 1140 to 970

I hope its help you.

thank you for your correct. link for customize bootstrap: https://getbootstrap.com/docs/3.4/customize/

Use Shift+Del.

More info: Shift+Del combination key set a field to null when you filled a field by a value and you changed your decision and you want to make it null. It is useful and I amazed from the other answers that give strange solutions.

On thing to remember here is that the default param must be the last param in the function definition.

Following code will not compile:

void fun(int first, int second = 10, int third);

Following code will compile:

void fun(int first, int second, int third = 10);

You can use google map Obtaining User Location here!

After obtaining your location(longitude and latitude), you can use google place api

This code can help you get your location easily but not the best way.

locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
Criteria criteria = new Criteria();
String bestProvider = locationManager.getBestProvider(criteria, true);
Location location = locationManager.getLastKnownLocation(bestProvider);  

As there are many answers, I'm adding my implementation on top of eval() method with some additional features like support for factorial, evaluating complex expressions etc.

package evaluation;

import java.math.BigInteger;
import java.util.EmptyStackException;
import java.util.Scanner;
import java.util.Stack;
import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;
import javax.script.ScriptException;

public class EvalPlus {
    private static Scanner scanner = new Scanner(System.in);

    public static void main(String[] args) {
        System.out.println("This Evaluation is based on BODMAS rule\n");
        evaluate();
    }

    private static void evaluate() {
        StringBuilder finalStr = new StringBuilder();
        System.out.println("Enter an expression to evaluate:");
        String expr = scanner.nextLine(); 
        if(isProperExpression(expr)) {
            expr = replaceBefore(expr);
            char[] temp = expr.toCharArray();
            String operators = "(+-*/%)";
            for(int i = 0; i < temp.length; i++) {
                if((i == 0 && temp[i] != '*') || (i == temp.length-1 && temp[i] != '*' && temp[i] != '!')) {
                    finalStr.append(temp[i]);
                } else if((i > 0 && i < temp.length -1) || (i==temp.length-1 && temp[i] == '!')) {
                    if(temp[i] == '!') {
                        StringBuilder str = new StringBuilder();
                        for(int k = i-1; k >= 0; k--) {
                            if(Character.isDigit(temp[k])) {
                                str.insert(0, temp[k] );
                            } else {
                                break;
                            }
                        }
                        Long prev = Long.valueOf(str.toString());
                        BigInteger val = new BigInteger("1");
                        for(Long j = prev; j > 1; j--) {
                            val = val.multiply(BigInteger.valueOf(j));
                        }
                        finalStr.setLength(finalStr.length() - str.length());
                        finalStr.append("(" + val + ")");
                        if(temp.length > i+1) {
                            char next = temp[i+1];
                            if(operators.indexOf(next) == -1) { 
                                finalStr.append("*");
                            }
                        }
                    } else {
                        finalStr.append(temp[i]);
                    }
                }
            }
            expr = finalStr.toString();
            if(expr != null && !expr.isEmpty()) {
                ScriptEngineManager mgr = new ScriptEngineManager();
                ScriptEngine engine = mgr.getEngineByName("JavaScript");
                try {
                    System.out.println("Result: " + engine.eval(expr));
                    evaluate();
                } catch (ScriptException e) {
                    System.out.println(e.getMessage());
                }
            } else {
                System.out.println("Please give an expression");
                evaluate();
            }
        } else {
            System.out.println("Not a valid expression");
            evaluate();
        }
    }

    private static String replaceBefore(String expr) {
        expr = expr.replace("(", "*(");
        expr = expr.replace("+*", "+").replace("-*", "-").replace("**", "*").replace("/*", "/").replace("%*", "%");
        return expr;
    }

    private static boolean isProperExpression(String expr) {
        expr = expr.replaceAll("[^()]", "");
        char[] arr = expr.toCharArray();
        Stack<Character> stack = new Stack<Character>();
        int i =0;
        while(i < arr.length) {
            try {
                if(arr[i] == '(') {
                    stack.push(arr[i]);
                } else {
                    stack.pop();
                }
            } catch (EmptyStackException e) {
                stack.push(arr[i]);
            }
            i++;
        }
        return stack.isEmpty();
    }
}

Please find the updated gist anytime here. Also comment if any issues are there. Thanks.

I am introducing Two custom library functions to be used in vba, which will serve the purpose of rounding the double value instead of using WorkSheetFunction.RoundDown and WorkSheetFunction.RoundUp

Function RDown(Amount As Double, digits As Integer) As Double
    RDown = Int((Amount + (1 / (10 ^ (digits + 1)))) * (10 ^ digits)) / (10 ^ digits)
End Function

Function RUp(Amount As Double, digits As Integer) As Double
    RUp = RDown(Amount + (5 / (10 ^ (digits + 1))), digits)
End Function

Thus function Rdown(2878.75 * 31.1,2) will return 899529.12 and function RUp(2878.75 * 31.1,2) will return 899529.13 Whereas The function Rdown(2878.75 * 31.1,-3) will return 89000 and function RUp(2878.75 * 31.1,-3) will return 90000

to handle undefined, null, and NaN: Null behaves like 0, NaN and undefined goes to end.

array = [3, 5, -1, 1, NaN, 6, undefined, 2, null]
array.sort((a,b) => isNaN(a) || a-b)
// [-1, null, 1, 2, 3, 5, 6, NaN, undefined]

Note: you should use the accepted answer if possible. It's better than mine.

It's quite easy with the GD library.

It's built in usually, you probably have it (use phpinfo() to check)

$image = imagecreatefromjpeg("http://images.websnapr.com/?size=size&key=Y64Q44QLt12u&url=http://google.com");

imagejpeg($image, "folder/file.jpg");

The above answer is better (faster) for most situations, but with GD you can also modify it in some form (cropping for example).

$image = imagecreatefromjpeg("http://images.websnapr.com/?size=size&key=Y64Q44QLt12u&url=http://google.com");
imagecopy($image, $image, 0, 140, 0, 0, imagesx($image), imagesy($image));
imagejpeg($image, "folder/file.jpg");

This only works if allow_url_fopen is true (it is by default)

The yield keyword actually does quite a lot here.

The function returns an object that implements the IEnumerable<object> interface. If a calling function starts foreaching over this object, the function is called again until it "yields". This is syntactic sugar introduced in C# 2.0. In earlier versions you had to create your own IEnumerable and IEnumerator objects to do stuff like this.

The easiest way understand code like this is to type-in an example, set some breakpoints and see what happens. Try stepping through this example:

public void Consumer()
{
    foreach(int i in Integers())
    {
        Console.WriteLine(i.ToString());
    }
}

public IEnumerable<int> Integers()
{
    yield return 1;
    yield return 2;
    yield return 4;
    yield return 8;
    yield return 16;
    yield return 16777216;
}

When you step through the example, you'll find the first call to Integers() returns 1. The second call returns 2 and the line yield return 1 is not executed again.

Here is a real-life example:

public IEnumerable<T> Read<T>(string sql, Func<IDataReader, T> make, params object[] parms)
{
    using (var connection = CreateConnection())
    {
        using (var command = CreateCommand(CommandType.Text, sql, connection, parms))
        {
            command.CommandTimeout = dataBaseSettings.ReadCommandTimeout;
            using (var reader = command.ExecuteReader())
            {
                while (reader.Read())
                {
                    yield return make(reader);
                }
            }
        }
    }
}

If you are running a dev watch mode stop out and rebuild. I converted an ES6 module to a React Component and it only worked after a rebuild (vs a watch build).

You can not alter constraints ever but you can drop them and then recreate.

Have look on this

ALTER TABLE your_table DROP CONSTRAINT ACTIVEPROG_FKEY1;

and then recreate it with ON DELETE CASCADE like this

ALTER TABLE your_table
add CONSTRAINT ACTIVEPROG_FKEY1 FOREIGN KEY(ActiveProgCode) REFERENCES PROGRAM(ActiveProgCode)
    ON DELETE CASCADE;

hope this help

No need for jQuery.

JavaScript arrays have a find method, so you can achieve that in one line:

array.find((o) => { return o[propertyName] === propertyValue }

Example

const purposeObjects = [
    {purpose: "daily"},
    {purpose: "weekly"},
    {purpose: "monthly"}
];

purposeObjects.find((o) => { return o["purpose"] === "weekly" }

// output -> {purpose: "weekly"}

If you need IE compatibility, import this polyfill in your code.

Request.Form is a NameValueCollection. In NameValueCollection you can find the GetAllValues() method.

By the way the LINQ method also works.

well this method is not a good one, but easy and not suggested. Maybe i should say this is the least effective method and the worse coding practice but, fun to use,

float val=10.0;
String str=val+"";

the empty quotes, add a null string to the variable str, upcasting 'val' to the string type.

Unless it's just a simplified example for the question, my advice is that drop the batch wrapper and schedule PHP directly, more specifically the php-win.exe program, which won't open unnecessary windows.

Program: c:\program files\php\php-win.exe
Arguments: D:\mydocs\mp\index.php param1 param2

Otherwise, just quote stuff as Andrew points out.

In older versions of Windows, you should be able to put everything in the single "Run" text box (as long as you quote everything that has spaces):

"c:\program files\php\php-win.exe" D:\mydocs\mp\index.php param1 param2

Additional to the jQuery thing treated in the other answers there is another meaning in JavaScript - as prefix for the RegExp properties representing matches, for example:

"test".match( /t(e)st/ );
alert( RegExp.$1 );

will alert "e"

But also here it's not "magic" but simply part of the properties name

Not the most elegant, but I do (for Python 3):

if hasattr(instance, '__iter__') and not isinstance(instance, (str, bytes)):
    ...

This allows other iterables (like Django querysets) but excludes strings and bytestrings. I typically use this in functions that accept either a single object ID or a list of object IDs. Sometimes the object IDs can be strings and I don't want to iterate over those character by character. :)

Look here: http://en.cppreference.com/w/cpp/algorithm/sort.

It says:

template< class RandomIt, class Compare >
void sort( RandomIt first, RandomIt last, Compare comp );

• comp - comparison function which returns ?true if the first argument is less than the second. The signature of the comparison function should be equivalent to the following: bool cmp(const Type1 &a, const Type2 &b);

Also, here's an example of how you can use std::sort using a custom C++14 polymorphic lambda:

std::sort(std::begin(container), std::end(container),
          [] (const auto& lhs, const auto& rhs) {
    return lhs.first < rhs.first;
});

Can you not use AcceptButton in for the Forms Properties Window? This sets the default behaviour for the Enter key press, but you are still able to use other shortcuts.

import ast
l = ast.literal_eval('[ "A","B","C" , " D"]')
l = [i.strip() for i in l]

In the OnStart method, do the following.

protected override void OnStart(string[] args)
{
    try
    {
        RequestAdditionalTime(600000);
        System.Diagnostics.Debugger.Launch(); // Put breakpoint here.

        .... Your code
    }
    catch (Exception ex)
    {
        .... Your exception code
    }
}

Then run a command prompt as administrator and put in the following:

c:\> sc create test-xyzService binPath= <ProjectPath>\bin\debug\service.exe type= own start= demand

The above line will create test-xyzService in the service list.

To start the service, this will prompt you to attach to debut in Visual Studio or not.

c:\> sc start text-xyzService

To stop the service:

c:\> sc stop test-xyzService

To delete or uninstall:

c:\> sc delete text-xyzService

Have a look on one of your own credit cards. It'll have some text like EXPIRES END or VALID THRU above the date. So the card expires at the end of the given month.

that value is contained in the variable $#

Form of loop provided by Juan Mendez is very useful and practical, I changed it a little bit, so that now it works with - false, null, zero and empty strings too.

var items = [
    true,
    false,
    null,
    0,
    ""
];

for(var i = 0, item; (item = items[i]) !== undefined; i++)
{
    console.log("Index: " + i + "; Value: " + item);
}

This

public static bool GetBit(this byte b, int bitNumber) {
   return (b & (1 << bitNumber)) != 0;
}

should do it, I think.

Using XAML:

If you know the other assembly structure and want the resources in c# code, then use below code:

 ResourceDictionary dictionary = new ResourceDictionary();
 dictionary.Source = new Uri("pack://application:,,,/WpfControlLibrary1;Component/RD1.xaml", UriKind.Absolute);
 foreach (var item in dictionary.Values)
 {
    //operations
 }

Output: If we want to use ResourceDictionary RD1.xaml of Project WpfControlLibrary1 into StackOverflowApp project.

Structure of Projects:

Resource Dictionary:

Code Output:

PS: All ResourceDictionary Files should have Build Action as 'Resource' or 'Page'.

Using C#:

If anyone wants the solution in purely c# code then see my this solution.

Static array :Efficiency. No dynamic allocation or deallocation is required.

Arrays declared in C, C++ in function including static modifier are static. Example: static int foo[5];

I assume you don't want to rebind the event, but call the handler.

You can use trigger() to trigger events:

$('#billing_state_id').trigger('change');

If your handler doesn't rely on the event context and you don't want to trigger other handlers for the event, you could also name the function:

function someFunction() {
    //do stuff
}

$(document).ready(function(){
    //Load City by State
    $('#billing_state_id').live('change', someFunction);   
    $('#click_me').live('click', function() {
       //do something
       someFunction();
    });
  });

Also note that live() is deprecated, on() is the new hotness.

PostgreSQL also supports full POSIX regular expressions:

select * from table where value ~* 'foo|bar|baz';

The ~* is for a case insensitive match, ~ is case sensitive.

Another option is to use ANY:

select * from table where value  like any (array['%foo%', '%bar%', '%baz%']);
select * from table where value ilike any (array['%foo%', '%bar%', '%baz%']);

You can use ANY with any operator that yields a boolean. I suspect that the regex options would be quicker but ANY is a useful tool to have in your toolbox.

@ECHO OFF

:: %HOMEDRIVE% = C:
:: %HOMEPATH% = \Users\Ruben
:: %system32% ??
:: No spaces in paths
:: Program Files > ProgramFiles
:: cls = clear screen
:: CMD reads the system environment variables when it starts. To re-read those variables you need to restart CMD
:: Use console 2 http://sourceforge.net/projects/console/


:: Assign all Path variables
SET PHP="%HOMEDRIVE%\wamp\bin\php\php5.4.16"
SET SYSTEM32=";%HOMEDRIVE%\Windows\System32"
SET ANT=";%HOMEDRIVE%%HOMEPATH%\Downloads\apache-ant-1.9.0-bin\apache-ant-1.9.0\bin"
SET GRADLE=";%HOMEDRIVE%\tools\gradle-1.6\bin;"
SET ADT=";%HOMEDRIVE%\tools\adt-bundle-windows-x86-20130219\eclipse\jre\bin"
SET ADTTOOLS=";%HOMEDRIVE%\tools\adt-bundle-windows-x86-20130219\sdk\tools"
SET ADTP=";%HOMEDRIVE%\tools\adt-bundle-windows-x86-20130219\sdk\platform-tools"
SET YII=";%HOMEDRIVE%\wamp\www\yii\framework"
SET NODEJS=";%HOMEDRIVE%\ProgramFiles\nodejs"
SET CURL=";%HOMEDRIVE%\tools\curl_734_0_ssl"
SET COMPOSER=";%HOMEDRIVE%\ProgramData\ComposerSetup\bin"
SET GIT=";%HOMEDRIVE%\Program Files\Git\cmd"

:: Set Path variable
setx PATH "%PHP%%SYSTEM32%%NODEJS%%COMPOSER%%YII%%GIT%" /m

:: Set Java variable
setx JAVA_HOME "%HOMEDRIVE%\ProgramFiles\Java\jdk1.7.0_21" /m

PAUSE

Your question makes an assertion, that "Writing exception-safe code is very hard". I will answer your questions first, and then, answer the hidden question behind them.

Answering questions

Do you really write exception safe code?

Of course, I do.

This is the reason Java lost a lot of its appeal to me as a C++ programmer (lack of RAII semantics), but I am digressing: This is a C++ question.

It is, in fact, necessary when you need to work with STL or Boost code. For example, C++ threads (boost::thread or std::thread) will throw an exception to exit gracefully.

Are you sure your last "production ready" code is exception safe?

Can you even be sure, that it is?

Writing exception-safe code is like writing bug-free code.

You can't be 100% sure your code is exception safe. But then, you strive for it, using well-known patterns, and avoiding well-known anti-patterns.

Do you know and/or actually use alternatives that work?

There are no viable alternatives in C++ (i.e. you'll need to revert back to C and avoid C++ libraries, as well as external surprises like Windows SEH).

Writing exception safe code

To write exception safe code, you must know first what level of exception safety each instruction you write is.

For example, a new can throw an exception, but assigning a built-in (e.g. an int, or a pointer) won't fail. A swap will never fail (don't ever write a throwing swap), a std::list::push_back can throw...

Exception guarantee

The first thing to understand is that you must be able to evaluate the exception guarantee offered by all of your functions:

1. none: Your code should never offer that. This code will leak everything, and break down at the very first exception thrown.
2. basic: This is the guarantee you must at the very least offer, that is, if an exception is thrown, no resources are leaked, and all objects are still whole
3. strong: The processing will either succeed, or throw an exception, but if it throws, then the data will be in the same state as if the processing had not started at all (this gives a transactional power to C++)
4. nothrow/nofail: The processing will succeed.

Example of code

The following code seems like correct C++, but in truth, offers the "none" guarantee, and thus, it is not correct:

void doSomething(T & t)
{
   if(std::numeric_limits<int>::max() > t.integer)  // 1.   nothrow/nofail
      t.integer += 1 ;                              // 1'.  nothrow/nofail
   X * x = new X() ;                // 2. basic : can throw with new and X constructor
   t.list.push_back(x) ;            // 3. strong : can throw
   x->doSomethingThatCanThrow() ;   // 4. basic : can throw
}

I write all my code with this kind of analysis in mind.

The lowest guarantee offered is basic, but then, the ordering of each instruction makes the whole function "none", because if 3. throws, x will leak.

The first thing to do would be to make the function "basic", that is putting x in a smart pointer until it is safely owned by the list:

void doSomething(T & t)
{
   if(std::numeric_limits<int>::max() > t.integer)  // 1.   nothrow/nofail
      t.integer += 1 ;                              // 1'.  nothrow/nofail
   std::auto_ptr<X> x(new X()) ;    // 2.  basic : can throw with new and X constructor
   X * px = x.get() ;               // 2'. nothrow/nofail
   t.list.push_back(px) ;           // 3.  strong : can throw
   x.release() ;                    // 3'. nothrow/nofail
   px->doSomethingThatCanThrow() ;  // 4.  basic : can throw
}

Now, our code offers a "basic" guarantee. Nothing will leak, and all objects will be in a correct state. But we could offer more, that is, the strong guarantee. This is where it can become costly, and this is why not all C++ code is strong. Let's try it:

void doSomething(T & t)
{
   // we create "x"
   std::auto_ptr<X> x(new X()) ;    // 1. basic : can throw with new and X constructor
   X * px = x.get() ;               // 2. nothrow/nofail
   px->doSomethingThatCanThrow() ;  // 3. basic : can throw

   // we copy the original container to avoid changing it
   T t2(t) ;                        // 4. strong : can throw with T copy-constructor

   // we put "x" in the copied container
   t2.list.push_back(px) ;          // 5. strong : can throw
   x.release() ;                    // 6. nothrow/nofail
   if(std::numeric_limits<int>::max() > t2.integer)  // 7.   nothrow/nofail
      t2.integer += 1 ;                              // 7'.  nothrow/nofail

   // we swap both containers
   t.swap(t2) ;                     // 8. nothrow/nofail
}

We re-ordered the operations, first creating and setting X to its right value. If any operation fails, then t is not modified, so, operation 1 to 3 can be considered "strong": If something throws, t is not modified, and X will not leak because it's owned by the smart pointer.

Then, we create a copy t2 of t, and work on this copy from operation 4 to 7. If something throws, t2 is modified, but then, t is still the original. We still offer the strong guarantee.

Then, we swap t and t2. Swap operations should be nothrow in C++, so let's hope the swap you wrote for T is nothrow (if it isn't, rewrite it so it is nothrow).

So, if we reach the end of the function, everything succeeded (No need of a return type) and t has its excepted value. If it fails, then t has still its original value.

Now, offering the strong guarantee could be quite costly, so don't strive to offer the strong guarantee to all your code, but if you can do it without a cost (and C++ inlining and other optimization could make all the code above costless), then do it. The function user will thank you for it.

Conclusion

It takes some habit to write exception-safe code. You'll need to evaluate the guarantee offered by each instruction you'll use, and then, you'll need to evaluate the guarantee offered by a list of instructions.

Of course, the C++ compiler won't back up the guarantee (in my code, I offer the guarantee as a @warning doxygen tag), which is kinda sad, but it should not stop you from trying to write exception-safe code.

Normal failure vs. bug

How can a programmer guarantee that a no-fail function will always succeed? After all, the function could have a bug.

This is true. The exception guarantees are supposed to be offered by bug-free code. But then, in any language, calling a function supposes the function is bug-free. No sane code protects itself against the possibility of it having a bug. Write code the best you can, and then, offer the guarantee with the supposition it is bug-free. And if there is a bug, correct it.

Exceptions are for exceptional processing failure, not for code bugs.

Last words

Now, the question is "Is this worth it ?".

Of course, it is. Having a "nothrow/no-fail" function knowing that the function won't fail is a great boon. The same can be said for a "strong" function, which enables you to write code with transactional semantics, like databases, with commit/rollback features, the commit being the normal execution of the code, throwing exceptions being the rollback.

Then, the "basic" is the very least guarantee you should offer. C++ is a very strong language there, with its scopes, enabling you to avoid any resource leaks (something a garbage collector would find it difficult to offer for the database, connection or file handles).

So, as far as I see it, it is worth it.

Edit 2010-01-29: About non-throwing swap

nobar made a comment that I believe, is quite relevant, because it is part of "how do you write exception safe code":

• [me] A swap will never fail (don't even write a throwing swap)
• [nobar] This is a good recommendation for custom-written swap() functions. It should be noted, however, that std::swap() can fail based on the operations that it uses internally

the default std::swap will make copies and assignments, which, for some objects, can throw. Thus, the default swap could throw, either used for your classes or even for STL classes. As far as the C++ standard is concerned, the swap operation for vector, deque, and list won't throw, whereas it could for map if the comparison functor can throw on copy construction (See The C++ Programming Language, Special Edition, appendix E, E.4.3.Swap).

Looking at Visual C++ 2008 implementation of the vector's swap, the vector's swap won't throw if the two vectors have the same allocator (i.e., the normal case), but will make copies if they have different allocators. And thus, I assume it could throw in this last case.

So, the original text still holds: Don't ever write a throwing swap, but nobar's comment must be remembered: Be sure the objects you're swapping have a non-throwing swap.

Edit 2011-11-06: Interesting article

Dave Abrahams, who gave us the basic/strong/nothrow guarantees, described in an article his experience about making the STL exception safe:

http://www.boost.org/community/exception_safety.html

Look at the 7th point (Automated testing for exception-safety), where he relies on automated unit testing to make sure every case is tested. I guess this part is an excellent answer to the question author's "Can you even be sure, that it is?".

Edit 2013-05-31: Comment from dionadar

t.integer += 1; is without the guarantee that overflow will not happen NOT exception safe, and in fact may technically invoke UB! (Signed overflow is UB: C++11 5/4 "If during the evaluation of an expression, the result is not mathematically defined or not in the range of representable values for its type, the behavior is undefined.") Note that unsigned integer do not overflow, but do their computations in an equivalence class modulo 2^#bits.

Dionadar is referring to the following line, which indeed has undefined behaviour.

   t.integer += 1 ;                 // 1. nothrow/nofail

The solution here is to verify if the integer is already at its max value (using std::numeric_limits<T>::max()) before doing the addition.

My error would go in the "Normal failure vs. bug" section, that is, a bug. It doesn't invalidate the reasoning, and it does not mean the exception-safe code is useless because impossible to attain. You can't protect yourself against the computer switching off, or compiler bugs, or even your bugs, or other errors. You can't attain perfection, but you can try to get as near as possible.

I corrected the code with Dionadar's comment in mind.

To undo git checkout do git checkout -, similarly to cd and cd - in shell.

Chrome apps including Postman are being deprecated as mentioned here. Now the recommendation is to go for native apps which are not detached from the sandboxed environment of the browser.

Quoting from the feature page:

FEATURES EXCLUSIVE TO THE NATIVE APPS:

COOKIES: The native apps let you work with cookies directly. Unlike the Chrome app, no separate extension (Interceptor) is needed.

BUILT-IN PROXY: The native apps come with a built-in proxy that you can use to capture network traffic.

RESTRICTED HEADERS: The latest version of the native apps let you send headers like Origin and User-Agent. These are restricted in the Chrome app. DON'T FOLLOW

REDIRECTS OPTION: This option exists in the native apps to prevent requests that return a 300-series response from being automatically redirected. Previously, users needed to use the Interceptor extension to do this in the Chrome app.

MENU BAR: The native apps are not restricted by the Chrome standards for the menu bar.

POSTMAN CONSOLE: The latest version of the native apps has a built-in console, which allows you to view the network request details for API calls.

So once you install the native Postman app from here you don't have to go looking for additional prerequisites like interceptor app just to check your cookies. I didn't have to change a single setting after installing the native postman app and all my cookies were visible in Cookies tab as shown below:

Just go to vmvare edit->preferences->shared vms. Click on change settings and disable sharing.click on OK.xampp will work fine.

You could use an asymmetrical border to make curves with CSS.

border-radius: 50%/100px 100px 0 0;

VIEW DEMO

.box {_x000D_
  width: 500px; _x000D_
  height: 100px;  _x000D_
  border: solid 5px #000;_x000D_
  border-color: #000 transparent transparent transparent;_x000D_
  border-radius: 50%/100px 100px 0 0;_x000D_
}

<div class="box"></div>

Just insert <input> element in <td> dynamically, on cell click. Only simple HTML and Javascript. No need for contentEditable , jquery, HTML5

https://Jsfiddle.net/gsivanov/38tLqobw/2/

To iterate over a multidimensional array, you can use RecursiveArrayIterator

$jsonIterator = new RecursiveIteratorIterator(
    new RecursiveArrayIterator(json_decode($json, TRUE)),
    RecursiveIteratorIterator::SELF_FIRST);

foreach ($jsonIterator as $key => $val) {
    if(is_array($val)) {
        echo "$key:\n";
    } else {
        echo "$key => $val\n";
    }
}

Output:

John:
status => Wait
Jennifer:
status => Active
James:
status => Active
age => 56
count => 10
progress => 0.0029857
bad => 0

run on codepad

Select count(*) from table_name into @var1; 
Select @var1;

In VS2019, the project property page, TypeScript Build tab has a setting (dropdown) for "Module System". When I changed that from "ES2015" to CommonJS, then VS2019 IDE stopped complaining that it could find neither axios nor redux-thunk (TS2307).

tsconfig.json:

{
  "compilerOptions": {
    "allowJs": true,
    "baseUrl": "src",
    "forceConsistentCasingInFileNames": true,
    "jsx": "react",
    "lib": [
      "es6",
      "dom",
      "es2015.promise"
    ],
    "module": "esnext",
    "moduleResolution": "node",
    "noImplicitAny": true,
    "noImplicitReturns": true,
    "noImplicitThis": true,
    "noUnusedLocals": true,
    "outDir": "build/dist",
    "rootDir": "src",
    "sourceMap": true,
    "strictNullChecks": true,
    "suppressImplicitAnyIndexErrors": true,
    "esModuleInterop": true,
    "allowSyntheticDefaultImports": true,
    "target": "es5",
    "skipLibCheck": true,
    "strict": true,
    "resolveJsonModule": true,
    "isolatedModules": true,
    "noEmit": true
  },
  "exclude": [
    "build",
    "scripts",
    "acceptance-tests",
    "webpack",
    "jest",
    "src/setupTests.ts",
    "node_modules",
    "obj",
    "**/*.spec.ts"
  ],
  "include": [
    "src",
    "src/**/*.ts",
    "@types/**/*.d.ts",
    "node_modules/axios",
    "node_modules/redux-thunk"
  ]
}

Although abs(x - y) or equivalently abs(y - x) is preferred, if you are curious about a different answer, the following one-liners also work:

• max(x - y, y - x)

• -min(x - y, y - x)

• max(x, y) - min(x, y)

• (x - y) * math.copysign(1, x - y), or equivalently (d := x - y) * math.copysign(1, d) in Python =3.8

• functools.reduce(operator.sub, sorted([x, y], reverse=True))

You can do that I believe. It needs root permission. If you want to know where your apk files are stored, open a emulator and then go to

DDMS>File Explorer-> you can see a directory by name "data" -> Click on it and you will see a "app" folder.

Your apks are stored there. In fact just copying a apk directly to the folder works for me with emulators.

A delegate is a class that wraps a pointer or reference to an object instance, a member method of that object's class to be called on that object instance, and provides a method to trigger that call.

Here's an example:

template <class T>
class CCallback
{
public:
    typedef void (T::*fn)( int anArg );

    CCallback(T& trg, fn op)
        : m_rTarget(trg)
        , m_Operation(op)
    {
    }

    void Execute( int in )
    {
        (m_rTarget.*m_Operation)( in );
    }

private:

    CCallback();
    CCallback( const CCallback& );

    T& m_rTarget;
    fn m_Operation;

};

class A
{
public:
    virtual void Fn( int i )
    {
    }
};


int main( int /*argc*/, char * /*argv*/ )
{
    A a;
    CCallback<A> cbk( a, &A::Fn );
    cbk.Execute( 3 );
}

What the output that you need, select or print or .. so on.

so use the following code:

IF EXISTS (SELECT * FROM tblGLUserAccess WHERE GLUserName ='xxxxxxxx') select 1 else select 2

Directory.GetFiles("C:\\", "*.*", SearchOption.AllDirectories)

SELECT CONVERT_TZ() will work for that.but its not working for me.

Why, what error do you get?

SELECT CONVERT_TZ(displaytime,'GMT','MET');

should work if your column type is timestamp, or date

http://dev.mysql.com/doc/refman/5.0/en/date-and-time-functions.html#function_convert-tz

Test how this works:

SELECT CONVERT_TZ(a_ad_display.displaytime,'+00:00','+04:00');

Check your timezone-table

SELECT * FROM mysql.time_zone;
SELECT * FROM mysql.time_zone_name;

http://dev.mysql.com/doc/refman/5.5/en/time-zone-support.html

If those tables are empty, you have not initialized your timezone tables. According to link above you can use mysql_tzinfo_to_sql program to load the Time Zone Tables. Please try this

shell> mysql_tzinfo_to_sql /usr/share/zoneinfo

or if not working read more: http://dev.mysql.com/doc/refman/5.5/en/mysql-tzinfo-to-sql.html

There are two properties in a TabControl control that manages which tab page is selected.

SelectedIndex which offer the possibility to select it by index (an integer starting from 0 to the number of tabs you have minus one).

SelectedTab which offer the possibility to selected the tab object itself to select.

Setting either of these property will change the currently displayed tab.

Alternatively you can also use the Select method. It comes in three flavour, one where you pass the index of the tab, another the TabPage object itself and the last one a string representing the tab's name.

The solution I came up with was as follows:

1. Create the SQL query in your favorite query dev tool
2. In Crystal Reports, within the main report, create parameter to pass to the subreport
3. Create sub report, using the 'Add Command' option in the 'Data' portion of the 'Report Creation Wizard' and the SQL query from #1.

4. Once the subreport is added to the main report, right click on the subreport, choose 'Change Subreport Links...', select the link field, and uncheck 'Select data in subreport based on field:'

   NOTE: You may have to initially add the parameter with the 'Select data in subreport based on field:' checked, then go back to 'Change Subreport Links ' and uncheck it after the subreport has been created.

5. In the subreport, click the 'Report' menu, 'Select Expert', use the 'Formula Editor', set the SQL column from #1 either equal to or like the parameter(s) selected in #4.

                   (Subreport SQL Column)  (Parameter from Main Report)
           Example:  {Command.Project} like {?Pm-?Proj_Name}
   

Include from the most specific to the least specific, starting with the corresponding .hpp for the .cpp, if one such exists. That way, any hidden dependencies in header files that are not self-sufficient will be revealed.

This is complicated by the use of pre-compiled headers. One way around this is, without making your project compiler-specific, is to use one of the project headers as the precompiled header include file.

I just turned off VPN and it solved the issue.

This should be a comment under the accepted answer, but I don't have 50 reputation yet.

At http://download.eclipse.org/webtools/downloads/

I first selected Released 3.5.2, which like others did not work for me. Then I picked Integration 3.6.0, and saw Tomcat 8 for New Project of Dynamic Web Project.

For people using JQuery:

Sometimes, when you have nested elements, one of them with the event attached to it, it can be confusing to understand what your browser sees as the parent. Here, you can specify which parent.

You take the mouse position, and then subtract it from the parent element's offset position.

var x = evt.pageX - $('#element').offset().left;
var y = evt.pageY - $('#element').offset().top;

If you're trying to get the mouse position on a page inside a scrolling pane:

var x = (evt.pageX - $('#element').offset().left) + self.frame.scrollLeft();
var y = (evt.pageY - $('#element').offset().top) + self.frame.scrollTop();

Or the position relative to the page:

var x = (evt.pageX - $('#element').offset().left) + $(window).scrollLeft();
var y = (evt.pageY - $('#element').offset().top) + $(window).scrollTop();

Note the following performance optimisation:

var offset = $('#element').offset();
// Then refer to 
var x = evt.pageX - offset.left;

In this way, JQuery does not have to look up #element for each line.

Update

There is a newer, JavaScript-only version in an answer by @anytimecoder -- see also browser support for getBoundingClientRect().

Here is a simple way to do it:

removeFunction(key){
  const data = {...this.state.data}; //Duplicate state.
  delete data[key];                  //remove Item form stateCopy.
  this.setState({data});             //Set state as the modify one.
}

Hope it Helps!!!

I put my initials and a dash (at-) as the first three characters of the branch name for this exact reason:

git branch -D `git branch --list 'at-*'`

This is what I did for bulk update:

UPDATE tableName SET isDeleted = 1 where columnName in ('430903GW4j683537882','430903GW4j667075431','430903GW4j658444015')

Other answers here provide solutions for triggering change detection cycles that will update component's view (which is not same as full re-render).

Full re-render, which would destroy and reinitialize component (calling all lifecycle hooks and rebuilding view) can be done by using ng-template, ng-container and ViewContainerRef in following way:

<div>
  <ng-container #outlet >
  </ng-container>
</div>

<ng-template #content>
  <child></child>
</ng-template>

Then in component having reference to both #outlet and #content we can clear outlets' content and insert another instance of child component:

@ViewChild("outlet", {read: ViewContainerRef}) outletRef: ViewContainerRef;
@ViewChild("content", {read: TemplateRef}) contentRef: TemplateRef<any>;

private rerender() {
    this.outletRef.clear();
    this.outletRef.createEmbeddedView(this.contentRef);
}

Additionally initial content should be inserted on AfterContentInit hook:

ngAfterContentInit() {
    this.outletRef.createEmbeddedView(this.contentRef);
}

Full working solution can be found here https://stackblitz.com/edit/angular-component-rerender .

Finding the first occurrence

There's a recipe for that in itertools:

def first_true(iterable, default=False, pred=None):
    """Returns the first true value in the iterable.

    If no true value is found, returns *default*

    If *pred* is not None, returns the first item
    for which pred(item) is true.

    """
    # first_true([a,b,c], x) --> a or b or c or x
    # first_true([a,b], x, f) --> a if f(a) else b if f(b) else x
    return next(filter(pred, iterable), default)

For example, the following code finds the first odd number in a list:

>>> first_true([2,3,4,5], None, lambda x: x%2==1)
3  

I know I'm late to the party, but I find that this works too.

var constructorString: string = this.constructor.toString();
var className: string = constructorString.match(/\w+/g)[1]; 

Alternatively...

var className: string = this.constructor.toString().match(/\w+/g)[1];

The above code gets the entire constructor code as a string and applies a regex to get all 'words'. The first word should be 'function' and the second word should be the name of the class.

Hope this helps.

Just to add Python 3 f-string solution

prob = 1.0/3.0
print(f"{prob:.0%}")

Hi there I was having the same error involving the appcompatv7 library and I did as @ianhanniballake suggested and check the build version of the library, by selecting it and giving a click with the secondary button of the mouse then:

Properties -> Android -> Android 5.0.1 api level 21

then clean all projects but I had no luck, so after loosing all my hopes I decided to upgrade from Eclipse Kepler to Eclipse Luna.

While I was waiting for the download to complete. I decided to try another thing, so I went and delete from eclipse the appcompatv7 library and checked the

Delete project contents on disk.

Opened the Android SDK to check if there were any updates, then I removed all library references from my project by selecting my project and under

Project -> Properties -> Android -> Library section

removed all libraries including the one that started all this problem

Google_Play_Services_Lib

then restarted Eclipse and copied from the Android SDK.The folder appcompat from:

android-sdk-linux/extras/android/support/v7

To my eclpse workspace, then imported it agan in to Eclipse from Import exsting project in workspace then choose the propper build tool version

Android 5.0.1 api 21

and added all my reference libraries, cleaned all projects and done everything was working again.

I choose for all my reference libraries the same build tool.

Hope this helps!!!!

By the way I tried to give a vote but I haven't had enough rep to do it.

Here is my way:

Let's say the branch name is develop.

# Create a new temp branch based on one history commit
git checkout <last_known_good_commit_hash>
git checkout -b develop-temp

# Delete the original develop branch and 
# create a new branch with the same name based on the develop-temp branch
git branch -D develop
git checkout -b develop

# Force update this new branch
git push -f origin develop

# Remove the temp branch
git branch -D develop-temp

This is a style choice. It does not impact the performance of the code in the least, it just makes it more verbose for the reader.

Swift 3:

let label = UILabel(frame: CGRect(x:0,y: 0,width: 250,height: 50))
label.textAlignment = .center
label.textColor = .white
label.font = UIFont(name: "Avenir-Light", size: 15.0)
label.text = "This is a Label"
self.view.addSubview(label)

I faced this error once when I defined a class that extended a view but referred to this custom view in the layout file with the wrong name. Instead of <com.example.customview/>, I had included <com.customview/> in the XML layout file.

You should definitely extend you ArrayListAdapter and implement this in your getView() method. The second parameter (a View) should be inflated if it's value is null, take advantage of it and set it an onClickListener() just after inflating.

Suposing it's called your second getView()'s parameter is called convertView:

convertView.setOnClickListener(new View.OnClickListener() {
  public void onClick(final View v) {
    if (isSamsung) {
      final Intent intent = new Intent(this, SamsungInfo.class);
      startActivity(intent);
    }
    else if (...) {
      ...
    }
  }
}

If you want some info on how to extend ArrayListAdapter, I recommend this link.

For a random integer with a range, try:

function random(minimum, maximum) {
  var bool = true;

  while (bool) {
    var number = (Math.floor(Math.random() * maximum + 1) + minimum);
    if (number > 20) {
      bool = true;
    } else {
      bool = false;
    }
  }

  return number;
}

Rather than keeping everything string-based, you should use a class which is designed to represent a file system path.

If you're using Java 7 or Java 8, you should strongly consider using java.nio.file.Path; Path.resolve can be used to combine one path with another, or with a string. The Paths helper class is useful too. For example:

Path path = Paths.get("foo", "bar", "baz.txt");

If you need to cater for pre-Java-7 environments, you can use java.io.File, like this:

File baseDirectory = new File("foo");
File subDirectory = new File(baseDirectory, "bar");
File fileInDirectory = new File(subDirectory, "baz.txt");

If you want it back as a string later, you can call getPath(). Indeed, if you really wanted to mimic Path.Combine, you could just write something like:

public static String combine(String path1, String path2)
{
    File file1 = new File(path1);
    File file2 = new File(file1, path2);
    return file2.getPath();
}

Let's fit the model:

> library(ISwR)
> fit <- lm(metabolic.rate ~ body.weight, rmr)
> summary(fit)

Call:
lm(formula = metabolic.rate ~ body.weight, data = rmr)

Residuals:
    Min      1Q  Median      3Q     Max 
-245.74 -113.99  -32.05  104.96  484.81 

Coefficients:
            Estimate Std. Error t value Pr(>|t|)    
(Intercept) 811.2267    76.9755  10.539 2.29e-13 ***
body.weight   7.0595     0.9776   7.221 7.03e-09 ***
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1 

Residual standard error: 157.9 on 42 degrees of freedom
Multiple R-squared: 0.5539, Adjusted R-squared: 0.5433 
F-statistic: 52.15 on 1 and 42 DF,  p-value: 7.025e-09 

The 95% confidence interval for the slope is the estimated coefficient (7.0595) ± two standard errors (0.9776).

This can be computed using confint:

> confint(fit, 'body.weight', level=0.95)
               2.5 % 97.5 %
body.weight 5.086656 9.0324

In my case, this was happening because the android/gradlew file did not have execute permission. Once granted, this worked fine

No need to calculate it manually.

Just use getGlobalVisibleRect like so:

Rect myViewRect = new Rect();
myView.getGlobalVisibleRect(myViewRect);
float x = myViewRect.left;
float y = myViewRect.top;

Also note that for the centre coordinates, rather than something like:

...
float two = (float) 2
float cx = myViewRect.left + myView.getWidth() / two;
float cy = myViewRect.top + myView.getHeight() / two;

You can just do:

float cx = myViewRect.exactCenterX();
float cy = myViewRect.exactCenterY();

you can add keyup event like this

template: `
  <input (keyup)="onKey($event)">
  <p>{{values}}</p>
`

in Component, code some like below

export class KeyUpComponent_v1 {
  values = '';

  onKey(event:any) { // without type info
    this.values += event.target.value + ' | ';
  }
}

If you are using ES6 features and you're in an async function, you can effectively halt the code execution for a certain time with this function:

const delay = millis => new Promise((resolve, reject) => {
  setTimeout(_ => resolve(), millis)
});

This is how you use it:

await delay(5000);

It will stall for the requested amount of milliseconds, but only if you're in an async function. Example below:

const myFunction = async function() {
  // first code block ...

  await delay(5000);

  // some more code, executed 5 seconds after the first code block finishes
}

Use -regex not -name, and be aware that the regex matches against what find would print, e.g. "/home/test/test.log" not "test.log"

You need the correct argument for the nth-child pseudo class.

• The argument should be in the form of an + b to match every a^th child starting from b.

• Both a and b are optional integers and both can be zero or negative.

  • If a is zero then there is no "every a^th child" clause.
  • If a is negative then matching is done backwards starting from b.
  • If b is zero or negative then it is possible to write equivalent expression using positive b e.g. 4n+0 is same as 4n+4. Likewise 4n-1 is same as 4n+3.

Examples:

Select every 4th child (4, 8, 12, ...)

li:nth-child(4n) {_x000D_
  background: yellow;_x000D_
}

<ol>_x000D_
  <li>Item</li>_x000D_
  <li>Item</li>_x000D_
  <li>Item</li>_x000D_
  <li>Item</li>_x000D_
  <li>Item</li>_x000D_
  <li>Item</li>_x000D_
  <li>Item</li>_x000D_
  <li>Item</li>_x000D_
  <li>Item</li>_x000D_
</ol>

Select every 4th child starting from 1 (1, 5, 9, ...)

li:nth-child(4n+1) {_x000D_
  background: yellow;_x000D_
}

<ol>_x000D_
  <li>Item</li>_x000D_
  <li>Item</li>_x000D_
  <li>Item</li>_x000D_
  <li>Item</li>_x000D_
  <li>Item</li>_x000D_
  <li>Item</li>_x000D_
  <li>Item</li>_x000D_
  <li>Item</li>_x000D_
  <li>Item</li>_x000D_
</ol>

Select every 3rd and 4th child from groups of 4 (3 and 4, 7 and 8, 11 and 12, ...)

/* two selectors are required */_x000D_
li:nth-child(4n+3),_x000D_
li:nth-child(4n+4) {_x000D_
  background: yellow;_x000D_
}

<ol>_x000D_
  <li>Item</li>_x000D_
  <li>Item</li>_x000D_
  <li>Item</li>_x000D_
  <li>Item</li>_x000D_
  <li>Item</li>_x000D_
  <li>Item</li>_x000D_
  <li>Item</li>_x000D_
  <li>Item</li>_x000D_
  <li>Item</li>_x000D_
</ol>

Select first 4 items (4, 3, 2, 1)

/* when a is negative then matching is done backwards  */_x000D_
li:nth-child(-n+4) {_x000D_
  background: yellow;_x000D_
}

<ol>_x000D_
  <li>Item</li>_x000D_
  <li>Item</li>_x000D_
  <li>Item</li>_x000D_
  <li>Item</li>_x000D_
  <li>Item</li>_x000D_
  <li>Item</li>_x000D_
  <li>Item</li>_x000D_
  <li>Item</li>_x000D_
  <li>Item</li>_x000D_
</ol>

Generally, make an "inverse" commit, using:

git revert 364705c

then send it to the remote as usual:

git push

This won't delete the commit: it makes an additional commit that undoes whatever the first commit did. Anything else, not really safe, especially when the changes have already been propagated.

cat dump.txt | head -16224 | tail -258

should do the trick. The downside of this approach is that you need to do the arithmetic to determine the argument for tail and to account for whether you want the 'between' to include the ending line or not.

I try lots of ways and finally try this:

def db_persist(func):
    def persist(*args, **kwargs):
        func(*args, **kwargs)
        try:
            session.commit()
            logger.info("success calling db func: " + func.__name__)
            return True
        except SQLAlchemyError as e:
            logger.error(e.args)
            session.rollback()
            return False

    return persist

and :

@db_persist
def insert_or_update(table_object):
    return session.merge(table_object)

A quick and dirty way is to use Thread.currentThread().setName(myName); in the run() method.

In some cases you can just use the flex-box property order.

Very simple:

.flex-item {
    order: 2;
}

See: https://css-tricks.com/almanac/properties/o/order/

When launching a form inside an MDIForm form you will need to use .CenterScreen instead of .CenterParent.

FrmLogin f = new FrmLogin();
f.MdiParent = this;
f.StartPosition = FormStartPosition.CenterScreen;
f.Show();

<%@ Page Language="C#" AutoEventWireup="True" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">    
<head>
    <title> HtmlSelect Example </title>
    <script runat="server">
      void Button_Click (Object sender, EventArgs e)
      {
         Label1.Text = "Selected index: " + Select1.SelectedIndex.ToString()
                       + ", value: " + Select1.Value;    
      }    
   </script>    
</head>    
<body>    
   <form id="form1" runat="server">

      Select an item: 

      <select id="Select1" runat="server">    
         <option value="Text for Item 1" selected="selected"> Item 1 </option>
         <option value="Text for Item 2"> Item 2 </option>
         <option value="Text for Item 3"> Item 3 </option>
         <option value="Text for Item 4"> Item 4 </option>
      </select>

      <button onserverclick="Button_Click" runat="server" Text="Submit"/>

      <asp:Label id="Label1" runat="server"/>    
   </form>
</body>
</html>

Source from Microsoft. Hope this is helpful!

import urllib, urllib2, cookielib

username = 'myuser'
password = 'mypassword'

cj = cookielib.CookieJar()
opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj))
login_data = urllib.urlencode({'username' : username, 'j_password' : password})
opener.open('http://www.example.com/login.php', login_data)
resp = opener.open('http://www.example.com/hiddenpage.php')
print resp.read()

resp.read() is the straight html of the page you want to open, and you can use opener to view any page using your session cookie.

While I enjoy using dplyr for interactive use, I find it extraordinarily tricky to do this using dplyr because you have to go through hoops to use lazyeval::interp(), setNames, etc. workarounds.

Here is a simpler version using base R, in which it seems more intuitive, to me at least, to put the loop inside the function, and which extends @MrFlicks's solution.

multipetal <- function(df, n) {
   for (i in 1:n){
      varname <- paste("petal", i , sep=".")
      df[[varname]] <- with(df, Petal.Width * i)
   }
   df
}
multipetal(iris, 3) 

Here is a example using iTextSharp

public static void MergePdf(Stream outputPdfStream, IEnumerable<string> pdfFilePaths)
{
    using (var document = new Document())
    using (var pdfCopy = new PdfCopy(document, outputPdfStream))
    {
        pdfCopy.CloseStream = false;
        try
        {
            document.Open();
            foreach (var pdfFilePath in pdfFilePaths)
            {
                using (var pdfReader = new PdfReader(pdfFilePath))
                {
                    pdfCopy.AddDocument(pdfReader);
                    pdfReader.Close();
                }
            }
        }
        finally
        {
            document?.Close();
        }
    }
}

The PdfReader constructor has many overloads. It's possible to replace the parameter type IEnumerable<string> with IEnumerable<Stream> and it should work as well. Please notice that the method does not close the OutputStream, it delegates that task to the Stream creator.

I don't think there is another way other than assigning value to that particular index of that array.

That happens because Visual Studio Code considers your current folder as the main folder, instead of considering the actual main folder.

The quick way to fix is it provide the interpreter path to the main folder.

Press Command + Shift + P (or Ctrl + Shift + P on most other systems).

Type Python interpreter

Select the path where you installed Python in from the options available.

All major browsers now include native JSON encoding/decoding.

// To encode an object (This produces a string)
var json_str = JSON.stringify(myobject); 

// To decode (This produces an object)
var obj = JSON.parse(json_str);

Note that only valid JSON data will be encoded. For example:

var obj = {'foo': 1, 'bar': (function (x) { return x; })}
JSON.stringify(obj) // --> "{\"foo\":1}"

Valid JSON types are: objects, strings, numbers, arrays, true, false, and null.

Some JSON resources:

• JSON on Mozilla Developer Network
• JSON on Wikipedia

To test your browser, go to http://html5test.com/. The code is being maintained at: github dot com slash NielsLeenheer slash html5test.

With bootstrap 3 the best way to go about achieving what you want is ...with offsetting columns. Please see these examples for more detail:
http://getbootstrap.com/css/#grid-offsetting

In short, and without seeing your divs here's an example what might help, without using any custom classes. Just note how the "col-6" is used and how half of that is 3 ...so the "offset-3" is used. Splitting equally will allow the centered spacing you're going for:

<div class="container">
<div class="col-sm-6 col-sm-offset-3">
your centered, floating column
</div></div>

I don't know is there any method in Python API.But you can use this simple code to add Salt-and-Pepper noise to an image.

import numpy as np
import random
import cv2

def sp_noise(image,prob):
    '''
    Add salt and pepper noise to image
    prob: Probability of the noise
    '''
    output = np.zeros(image.shape,np.uint8)
    thres = 1 - prob 
    for i in range(image.shape[0]):
        for j in range(image.shape[1]):
            rdn = random.random()
            if rdn < prob:
                output[i][j] = 0
            elif rdn > thres:
                output[i][j] = 255
            else:
                output[i][j] = image[i][j]
    return output

image = cv2.imread('image.jpg',0) # Only for grayscale image
noise_img = sp_noise(image,0.05)
cv2.imwrite('sp_noise.jpg', noise_img)

I faced a similar problem but in my case I was trying to install Visual C++ Redistributable for Visual Studio 2015 Update 1 on Windows Server 2012 R2. However the root cause should be the same.

In short, you need to install the prerequisites of KB2999226.

In more details, the installation log I got stated that the installation for Windows Update KB2999226 failed. According to the Microsoft website here:

Prerequisites To install this update, you must have April 2014 update rollup for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 (2919355) installed in Windows 8.1 or Windows Server 2012 R2. Or, install Service Pack 1 for Windows 7 or Windows Server 2008 R2. Or, install Service Pack 2 for Windows Vista and for Windows Server 2008.

After I have installed April 2014 on my Windows Server 2012 R2, I am able to install the Visual C++ Redistributable correctly.

check for this by calling the library jquery after the noconflict.js or that this calling more than once jquery library after the noconflict.js

You can also use the data-interval attribute eg. <div class="carousel" data-interval="10000">

It appears the default setting for Adobe Reader X is for the toolbars not to be shown by default unless they are explicitly turned on by the user. And even when I turn them back on during a session, they don't show up automatically next time. As such, I suspect you have a preference set contrary to the default.

The state you desire, with the top and left toolbars not shown, is called "Read Mode". If you right-click on the document itself, and then click "Page Display Preferences" in the context menu that is shown, you'll be presented with the Adobe Reader Preferences dialog. (This is the same dialog you can access by opening the Adobe Reader application, and selecting "Preferences" from the "Edit" menu.) In the list shown in the left-hand column of the Preferences dialog, select "Internet". Finally, on the right, ensure that you have the "Display in Read Mode by default" box checked:

You can also turn off the toolbars temporarily by clicking the button at the right of the top toolbar that depicts arrows pointing to opposing corners:

Finally, if you have "Display in Read Mode by default" turned off, but want to instruct the page you're loading not to display the toolbars (i.e., override the user's current preferences), you can append the following to the URL:

#toolbar=0&navpanes=0

So, for example, the following code will disable both the top toolbar (called "toolbar") and the left-hand toolbar (called "navpane"). However, if the user knows the keyboard combination (F8, and perhaps other methods as well), they will still be able to turn them back on.

string url = @"http://www.domain.com/file.pdf#toolbar=0&navpanes=0";
this._WebBrowser.Navigate(url);

You can read more about the parameters that are available for customizing the way PDF files open here on Adobe's developer website.

This works in FF, IE9

var x = document.getElementById("country").children[2];
x.setAttribute("selected", "selected");