To indent every line in a file type, Esc and then G=gg.

Yes, it is. And it is supported in all major browser:

var ts = Date.parse("date string");

The only difference is that this function returns milliseconds instead of seconds, so you need to divide the result by 1000.

Check what valid formats can JavaScript parse.

When you use php CLI argument -q doesn't exist.

I had the same problem when I wrote script in the Windows (eclipse) and I tried run them on Linux. Every line in file from Windows is ended by \r\n. I had to delete \r in first line that contained parser path:

When \r was deleted from first line (mcedit shown \r as ^M) script ran correctly.

DazWorrall's answer is spot on. Here's a variation that might be useful if your code is structured differently than the OP's:

num_rows_deleted = db.session.query(Model).delete()

Also, don't forget that the deletion won't take effect until you commit, as in this snippet:

try:
    num_rows_deleted = db.session.query(Model).delete()
    db.session.commit()
except:
    db.session.rollback()

Use JavaScript objects. You can access their properties like keys in a dictionary. This is the foundation of JSON. The syntax is similar to Python dictionaries. See: JSON.org

Just for fun, here is a solution using ed which does not have the problem of not working on an empty file. You can put it into a shell script just like any other answer to this question.

ed Test <<EOF
a

.
0i
<added text>
.
1,+1 j
$ g/^$/d
wq
EOF

The above script adds the text to insert to the first line, and then joins the first and second line. To avoid ed exiting on error with an invalid join, it first creates a blank line at the end of the file and remove it later if it still exists.

Limitations: This script does not work if <added text> is exactly equal to a single period.

try:

string script = "<script type=\"text/javascript\">alert('" + cleanMessage + "');</script>";

// this class will authenticate LDAP UserName or Email

// simply call LdapAuth.authenticateUserAndGetInfo (username,password);

//Note: Configure ldapURI ,requiredAttributes ,ADSearchPaths,accountSuffex 

import java.util.*;

import javax.naming.*;

import java.util.regex.*;

import javax.naming.directory.*;

import javax.naming.ldap.InitialLdapContext;

import javax.naming.ldap.LdapContext;

public class LdapAuth {


private final static String ldapURI = "ldap://20.200.200.200:389/DC=corp,DC=local";

private final static String contextFactory = "com.sun.jndi.ldap.LdapCtxFactory";

private  static String[] requiredAttributes = {"cn","givenName","sn","displayName","userPrincipalName","sAMAccountName","objectSid","userAccountControl"};


// see you active directory user OU's hirarchy 

private  static String[] ADSearchPaths = 

{ 

    "OU=O365 Synced Accounts,OU=ALL USERS",

    "OU=Users,OU=O365 Synced Accounts,OU=ALL USERS",

    "OU=In-House,OU=Users,OU=O365 Synced Accounts,OU=ALL USERS",

    "OU=Torbram Users,OU=Users,OU=O365 Synced Accounts,OU=ALL USERS",

    "OU=Migrated Users,OU=TES-Users"

};


private static String accountSuffex = "@corp.local"; // this will be used if user name is just provided


private static void authenticateUserAndGetInfo (String user, String password) throws Exception {

    try {


        Hashtable<String,String> env = new Hashtable <String,String>();

        env.put(Context.INITIAL_CONTEXT_FACTORY, contextFactory);

        env.put(Context.PROVIDER_URL, ldapURI);     

        env.put(Context.SECURITY_AUTHENTICATION, "simple");

        env.put(Context.SECURITY_PRINCIPAL, user);

        env.put(Context.SECURITY_CREDENTIALS, password);

        DirContext ctx = new InitialDirContext(env);

        String filter = "(sAMAccountName="+user+")";  // default for search filter username

        if(user.contains("@"))  // if user name is a email then
        {
            //String parts[] = user.split("\\@");
            //use different filter for email
            filter = "(userPrincipalName="+user+")";
        }

        SearchControls ctrl = new SearchControls();
        ctrl.setSearchScope(SearchControls.SUBTREE_SCOPE);
        ctrl.setReturningAttributes(requiredAttributes);

        NamingEnumeration userInfo = null;


        Integer i = 0;
        do
        {
            userInfo = ctx.search(ADSearchPaths[i], filter, ctrl);
            i++;

        } while(!userInfo.hasMore() && i < ADSearchPaths.length );

        if (userInfo.hasMore()) {

            SearchResult UserDetails = (SearchResult) userInfo.next();
            Attributes userAttr = UserDetails.getAttributes();System.out.println("adEmail = "+userAttr.get("userPrincipalName").get(0).toString());

            System.out.println("adFirstName = "+userAttr.get("givenName").get(0).toString());

            System.out.println("adLastName = "+userAttr.get("sn").get(0).toString());

            System.out.println("name = "+userAttr.get("cn").get(0).toString());

            System.out.println("AdFullName = "+userAttr.get("cn").get(0).toString());

        }

        userInfo.close();

    }
    catch (javax.naming.AuthenticationException e) {

    }
}   
}

3 Steps to Commit your changes

Suppose you have created a new branch on GitHub with the name feature-branch.

FETCH

    git pull --all         Pull all remote branches
    git branch -a          List all branches now

Checkout and switch to the feature-branch directory. You can simply copy the branch name from the output of branch -a command above

git checkout -b feature-branch

VALIDATE

Next use the git branch command to see the current branch. It will show feature-branch with * In front of it

git branch         

COMMIT

git add .   add all files
git commit -m "Rafactore code or use your message"

Take update and the push changes on the origin server

 git pull origin feature-branch
 git push origin feature-branch

git checkout -f

This is suffice for your question. Only thing is, once its done, its done. There is no undo.

Just to tell you : KONG's solution also works on iOS 7 beta.

His solution was:

Drag the image to simulator, then Safari opens (or browse to the Image in the internet using Safari) Hold your click on the image When the pop-up appears, choose Save Image and enjoy ;)

With regards to @CrazyJugglerDrummer second method it would be:

elementsToChange.style.cursor = "http://wiki-devel.sugarlabs.org/images/e/e2/Arrow.cur";

So far the best solution to accept seems to be <img class="center-block" ... />. But no one has mentioned how center-block works.

Take Bootstrap v3.3.6 for example:

.center-block {
  display: block;
  margin-right: auto;
  margin-left: auto;
}

The default value of dispaly for <img> is inline. Value block will display an element as a block element (like <p>). It starts on a new line, and takes up the whole width. In this way, the two margin settings let the image stay in the middle horizontally.

With jQuery date format :

$.format.date(new Date(), 'yyyy/MM/dd HH:mm:ss');

https://github.com/phstc/jquery-dateFormat

Enjoy

In the pom.xml (after loading effective pom.xml in eclipse), you may see it "http://repo.maven.apache.org/maven2" under central repository instead of "https://repo.maven.apache.org/maven2". Fix it

This com.mysql.jdbc.exceptions.jdbc4.CommunicationsException exception occurs if your database connection is idle for long time.

This idle connection returns true on connection.isClosed(); but if we try to execute statement then it will fire this exception so I will suggest to go with database pooling.

Make sure you have jQuery UI base and the color picker widget included on your page (as well as a copy of jQuery 1.3):

<link rel="stylesheet" href="http://dev.jquery.com/view/tags/ui/latest/themes/flora/flora.all.css" type="text/css" media="screen" title="Flora (Default)">

<script type="text/javascript" src="http://dev.jquery.com/view/tags/ui/latest/ui/ui.core.js"></script>

<script type="text/javascript" src="http://dev.jquery.com/view/tags/ui/latest/ui/ui.colorpicker.js"></script>

If you have those included, try posting your source so we can see what's going on.

You can use the null coalescing double question marks to test for nulls in a string or other nullable value type:

textBox1.Text = s ?? "Is null";

The operator '??' asks if the value of 's' is null and if not it returns 's'; if it is null it returns the value on the right of the operator.

More info here: https://msdn.microsoft.com/en-us/library/ms173224.aspx

And also worth noting there's a null-conditional operator ?. and ?[ introduced in C# 6.0 (and VB) in VS2015

textBox1.Text = customer?.orders?[0].description ?? "n/a";

This returns "n/a" if description is null, or if the order is null, or if the customer is null, else it returns the value of description.

More info here: https://msdn.microsoft.com/en-us/library/dn986595.aspx

For a .mp4 this works ( safari mobile & desktop ) :

<video height="250" width="250" controls>
    <source src="video.mp4" type="video/mp4" />
    Your browser does not support the video tag.
</video>

The controls=”true” mentioned in an above post make no sence to me as Apple says just use controls on its own.

Reference : “To use HTML5 audio or video, start by creating an  or  element, specifying a source URL for the media, and including the controls attribute. <video src="http://example.com/path/mymovie.mp4" controls></video>”

Source : https://developer.apple.com/library/content/documentation/AudioVideo/Conceptual/Using_HTML5_Audio_Video/Introduction/Introduction.html

In my dealings ( a small digression ) : I have found that uploading video from iPhone sends it to server as .quicktime. Ironically, this is the problem when trying to play back the video from the server on safari. ( mobile & desktop ).

So if ( like me ) you are experiencing a .quicktime ( or anything other than .mp4 ) problem in safari, here is a work around provided by apple. Note, I'm yet to test it myself and I'm not all that happy with it at a glance, just providing more info.

Reference : “Fall Back to the QuickTime Plug-in There is a simple way to fall back to the QuickTime plug-in that works for nearly all browsers—download the prebuilt JavaScript file provided by Apple, ac_quicktime.js, from HTML Video Example and include it in your webpage by inserting the following line of code into your HTML head: <script src="ac_quicktime.js" type="text/javascript"></script>”

Source : https://developer.apple.com/library/content/documentation/AudioVideo/Conceptual/Using_HTML5_Audio_Video/AudioandVideoTagBasics/AudioandVideoTagBasics.html#//apple_ref/doc/uid/TP40009523-CH2-SW6

Update: For .quicktime rename to .mov prior upload to server ( in base64 filetype "data:video/mov;" ), skip ac_quicktime.js . . . will then work in html video tag; Hackerdy Hack.

If you have more files in your folder, you can use the below piped command I found in unix stackexchange.

find /some/dir/ -type f -print0 | xargs -0 shuf -e -n 8 -z | xargs -0 cp -vt /target/dir/

Here I wanted to copy the files, but if you want to move files or do something else, just change the last command where I have used cp.

Are you accessing http data? Can you use the HttpClient library instead of the standard library? The library has more options and will provide better error messages.

http://hc.apache.org/httpclient-3.x/

Kill is definitly the wrong way! The PID will stay, Replicationsjobs will be killed etc. etc.

STOP MySQL Server

/sbin/service mysql stop

START MySQL Server

/sbin/service mysql start

RESTART MySQL Server

/sbin/service mysql restart

Perhaps sudo will be needed if you have not enough rights

Actually I think the LIMIT 10 would be issued to the database so slicing would not occur in Python but in the database.

See limiting-querysets for more information.

<?php
//
// A very simple PHP example that sends a HTTP POST to a remote site
//

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL,"http://xxxxxxxx.xxx/xx/xx");
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS,
            "dispnumber=567567567&extension=6");
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/x-www-form-urlencoded'));


// receive server response ...
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

$server_output = curl_exec ($ch);

curl_close ($ch);

// further processing ....
if ($server_output == "OK") { ... } else { ... }

?>

If you add double paranthesis to the ngModel reference you get a two-way binding to your model property. That property can then be read and used in the event handler. In my view that is the most clean approach.

<input type="checkbox" [(ngModel)]="myModel.property" (ngModelChange)="processChange()" />

To inspect the error message and do something with it (with Python 3)...

try:
    some_method()
except Exception as e:
    if {value} in e.args:
        {do something}

We can solve this using Hooks:

First we'll need a timeout hook for the delay.

This one is inspired by Dan Abramov's useInterval hook (see Dan's blog post for an in depth explanation), the differences being:

1. we use we setTimeout not setInterval
2. we return a reset function allowing us to restart the timer at any time

import { useEffect, useRef, useCallback } from 'react';_x000D_
_x000D_
const useTimeout = (callback, delay) => {_x000D_
  // save id in a ref_x000D_
  const timeoutId = useRef('');_x000D_
_x000D_
  // save callback as a ref so we can update the timeout callback without resetting the clock_x000D_
  const savedCallback = useRef();_x000D_
  useEffect(_x000D_
    () => {_x000D_
      savedCallback.current = callback;_x000D_
    },_x000D_
    [callback],_x000D_
  );_x000D_
_x000D_
  // clear the timeout and start a new one, updating the timeoutId ref_x000D_
  const reset = useCallback(_x000D_
    () => {_x000D_
      clearTimeout(timeoutId.current);_x000D_
_x000D_
      const id = setTimeout(savedCallback.current, delay);_x000D_
      timeoutId.current = id;_x000D_
    },_x000D_
    [delay],_x000D_
  );_x000D_
_x000D_
  useEffect(_x000D_
    () => {_x000D_
      if (delay !== null) {_x000D_
        reset();_x000D_
_x000D_
        return () => clearTimeout(timeoutId.current);_x000D_
      }_x000D_
    },_x000D_
    [delay, reset],_x000D_
  );_x000D_
_x000D_
  return { reset };_x000D_
};

and now we need a hook which will capture previous children and use our useTimeout hook to swap in the new children after a delay

import { useState, useEffect } from 'react';_x000D_
_x000D_
const useDelayNextChildren = (children, delay) => {_x000D_
  const [finalChildren, setFinalChildren] = useState(children);_x000D_
_x000D_
  const { reset } = useTimeout(() => {_x000D_
    setFinalChildren(children);_x000D_
  }, delay);_x000D_
_x000D_
  useEffect(_x000D_
    () => {_x000D_
      reset();_x000D_
    },_x000D_
    [reset, children],_x000D_
  );_x000D_
_x000D_
  return finalChildren || children || null;_x000D_
};

Note that the useTimeout callback will always have the latest children, so even if we attempt to render multiple different new children within the delay time, we'll always get the latest children once the timeout finally completes.

Now in your case, we want to also delay the initial render, so we make this change:

const useDelayNextChildren = (children, delay) => {_x000D_
  const [finalChildren, setFinalChildren] = useState(null); // initial state set to null_x000D_
_x000D_
  // ... stays the same_x000D_
_x000D_
  return finalChildren || null;  // remove children from return_x000D_
};

and using the above hook, your entire child component becomes

import React, { memo } from 'react';_x000D_
import { useDelayNextChildren } from 'hooks';_x000D_
_x000D_
const Child = ({ delay }) => useDelayNextChildren(_x000D_
  <div>_x000D_
    ... Child JSX goes here_x000D_
    ... etc_x000D_
  </div>_x000D_
  , delay_x000D_
);_x000D_
_x000D_
export default memo(Child);

or if you prefer: ( dont say i havent given you enough code ;) )

const Child = ({ delay }) => {_x000D_
  const render = <div>... Child JSX goes here ... etc</div>;_x000D_
_x000D_
  return useDelayNextChildren(render, delay);_x000D_
};

which will work exactly the same in the Parent render function as in the accepted answer

...

except the delay will be the same on every subsequent render too,

AND we used hooks, so that stateful logic is reusable across any component

...

...

use hooks. :D

If you don't need to keep the order, and consider 45 and "45" to be the same:

function union_arrays (x, y) {_x000D_
  var obj = {};_x000D_
  for (var i = x.length-1; i >= 0; -- i)_x000D_
     obj[x[i]] = x[i];_x000D_
  for (var i = y.length-1; i >= 0; -- i)_x000D_
     obj[y[i]] = y[i];_x000D_
  var res = []_x000D_
  for (var k in obj) {_x000D_
    if (obj.hasOwnProperty(k))  // <-- optional_x000D_
      res.push(obj[k]);_x000D_
  }_x000D_
  return res;_x000D_
}_x000D_
_x000D_
console.log(union_arrays([34,35,45,48,49], [44,55]));

From plt.imshow() official guide, we know that aspect controls the aspect ratio of the axes. Well in my words, the aspect is exactly the ratio of x unit and y unit. Most of the time we want to keep it as 1 since we do not want to distort out figures unintentionally. However, there is indeed cases that we need to specify aspect a value other than 1. The questioner provided a good example that x and y axis may have different physical units. Let's assume that x is in km and y in m. Hence for a 10x10 data, the extent should be [0,10km,0,10m] = [0, 10000m, 0, 10m]. In such case, if we continue to use the default aspect=1, the quality of the figure is really bad. We can hence specify aspect = 1000 to optimize our figure. The following codes illustrate this method.

%matplotlib inline
import numpy as np
import matplotlib.pyplot as plt
rng=np.random.RandomState(0)
data=rng.randn(10,10)
plt.imshow(data, origin = 'lower',  extent = [0, 10000, 0, 10], aspect = 1000)

Nevertheless, I think there is an alternative that can meet the questioner's demand. We can just set the extent as [0,10,0,10] and add additional xy axis labels to denote the units. Codes as follows.

plt.imshow(data, origin = 'lower',  extent = [0, 10, 0, 10])
plt.xlabel('km')
plt.ylabel('m')

To make a correct figure, we should always bear in mind that x_max-x_min = x_res * data.shape[1] and y_max - y_min = y_res * data.shape[0], where extent = [x_min, x_max, y_min, y_max]. By default, aspect = 1, meaning that the unit pixel is square. This default behavior also works fine for x_res and y_res that have different values. Extending the previous example, let's assume that x_res is 1.5 while y_res is 1. Hence extent should equal to [0,15,0,10]. Using the default aspect, we can have rectangular color pixels, whereas the unit pixel is still square!

plt.imshow(data, origin = 'lower',  extent = [0, 15, 0, 10])
# Or we have similar x_max and y_max but different data.shape, leading to different color pixel res.
data=rng.randn(10,5)
plt.imshow(data, origin = 'lower',  extent = [0, 5, 0, 5])

The aspect of color pixel is x_res / y_res. setting its aspect to the aspect of unit pixel (i.e. aspect = x_res / y_res = ((x_max - x_min) / data.shape[1]) / ((y_max - y_min) / data.shape[0])) would always give square color pixel. We can change aspect = 1.5 so that x-axis unit is 1.5 times y-axis unit, leading to a square color pixel and square whole figure but rectangular pixel unit. Apparently, it is not normally accepted.

data=rng.randn(10,10)
plt.imshow(data, origin = 'lower',  extent = [0, 15, 0, 10], aspect = 1.5)

The most undesired case is that set aspect an arbitrary value, like 1.2, which will lead to neither square unit pixels nor square color pixels.

plt.imshow(data, origin = 'lower',  extent = [0, 15, 0, 10], aspect = 1.2)

Long story short, it is always enough to set the correct extent and let the matplotlib do the remaining things for us (even though x_res!=y_res)! Change aspect only when it is a must.

You should preferably only have your component depend on state and props and it will work as expected, but if you really need a function to force the component to re-render, you could use the useState hook and call the function when needed.

Example

const { useState, useEffect } = React;_x000D_
_x000D_
function Foo() {_x000D_
  const [, forceUpdate] = useState();_x000D_
_x000D_
  useEffect(() => {_x000D_
    setTimeout(forceUpdate, 2000);_x000D_
  }, []);_x000D_
_x000D_
  return <div>{Date.now()}</div>;_x000D_
}_x000D_
_x000D_
ReactDOM.render(<Foo />, document.getElementById("root"));

<script src="https://unpkg.com/[email protected]/umd/react.production.min.js"></script>_x000D_
<script src="https://unpkg.com/[email protected]/umd/react-dom.production.min.js"></script>_x000D_
_x000D_
<div id="root"></div>

As you can see in the following example, json.loads (and json.load) does not decode multiple json object.

>>> json.loads('{}')
{}
>>> json.loads('{}{}') # == json.loads(json.dumps({}) + json.dumps({}))
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Python27\lib\json\__init__.py", line 338, in loads
    return _default_decoder.decode(s)
  File "C:\Python27\lib\json\decoder.py", line 368, in decode
    raise ValueError(errmsg("Extra data", s, end, len(s)))
ValueError: Extra data: line 1 column 3 - line 1 column 5 (char 2 - 4)

If you want to dump multiple dictionaries, wrap them in a list, dump the list (instead of dumping dictionaries multiple times)

>>> dict1 = {}
>>> dict2 = {}
>>> json.dumps([dict1, dict2])
'[{}, {}]'
>>> json.loads(json.dumps([dict1, dict2]))
[{}, {}]

based on http://web.archive.org/web/20080218124946/http://sqlserver2005.databases.aspfaq.com/how-do-i-mimic-sp-who2.html

i have created following script ,
which resolves finding active connections to any datbase using DMV this works under sql 2005 , 2008 and 2008R2

Following script uses sys.dm_exec_sessions , sys.dm_exec_requests , sys.dm_exec_connections , sys.dm_tran_locks

Declare @dbName varchar(1000)
set @dbName='abc'

;WITH DBConn(SPID,[Status],[Login],HostName,DBName,Command,LastBatch,ProgramName)
As
(
SELECT 
    SPID = s.session_id,
    Status = UPPER(COALESCE
        (
            r.status,
            ot.task_state,
            s.status, 
        '')),
    [Login] = s.login_name,
    HostName = COALESCE
        (
            s.[host_name],
            '  .'
        ),
    DBName = COALESCE
        (
            DB_NAME(COALESCE
            (
                r.database_id,
                t.database_id
            )),
            ''
        ),
    Command = COALESCE
        (
            r.Command,
            r.wait_type,
            wt.wait_type,
            r.last_wait_type,
            ''
        ),
    LastBatch = COALESCE
        (
            r.start_time,
            s.last_request_start_time
        ),
    ProgramName = COALESCE
        (
            s.program_name, 
            ''
        )
FROM
    sys.dm_exec_sessions s
LEFT OUTER JOIN
    sys.dm_exec_requests r
ON
    s.session_id = r.session_id
LEFT OUTER JOIN
    sys.dm_exec_connections c
ON
    s.session_id = c.session_id
LEFT OUTER JOIN
(
    SELECT 
        request_session_id,
        database_id = MAX(resource_database_id)
    FROM
        sys.dm_tran_locks
    GROUP BY
        request_session_id
) t
ON
    s.session_id = t.request_session_id
LEFT OUTER JOIN
    sys.dm_os_waiting_tasks wt
ON 
    s.session_id = wt.session_id
LEFT OUTER JOIN
    sys.dm_os_tasks ot
ON 
    s.session_id = ot.session_id
LEFT OUTER JOIN
(
    SELECT
        ot.session_id,
        CPU_Time = MAX(usermode_time)
    FROM
        sys.dm_os_tasks ot
    INNER JOIN
        sys.dm_os_workers ow
    ON
        ot.worker_address = ow.worker_address
    INNER JOIN
        sys.dm_os_threads oth
    ON
        ow.thread_address = oth.thread_address
    GROUP BY
        ot.session_id
) tt
ON
    s.session_id = tt.session_id
WHERE
    COALESCE
    (
        r.command,
        r.wait_type,
        wt.wait_type,
        r.last_wait_type,
        'a'
    ) >= COALESCE
    (
        '', 
        'a'
    )
)

Select * from DBConn
where DBName like '%'+@dbName+'%'

For me, the issue was a conflicting .NET version in one of the libraries that I recently imported. The library I imported was compiled for 4.5.2 and the ASP.NET MVC site I imported it into targeted 4.5. After recompiling said lib for 4.5 the website would comppile.

Also, there were no compilation errors, but the issue was being reported as a "warning". So be sure to read all warnings if there are any.

Try doing this :

/Employees/Employee[@id=4]/*/text()

stringstream.str() returns a temporary string object that's destroyed at the end of the full expression. If you get a pointer to a C string from that (stringstream.str().c_str()), it will point to a string which is deleted where the statement ends. That's why your code prints garbage.

You could copy that temporary string object to some other string object and take the C string from that one:

const std::string tmp = stringstream.str();
const char* cstr = tmp.c_str();

Note that I made the temporary string const, because any changes to it might cause it to re-allocate and thus render cstr invalid. It is therefor safer to not to store the result of the call to str() at all and use cstr only until the end of the full expression:

use_c_str( stringstream.str().c_str() );

Of course, the latter might not be easy and copying might be too expensive. What you can do instead is to bind the temporary to a const reference. This will extend its lifetime to the lifetime of the reference:

{
  const std::string& tmp = stringstream.str();   
  const char* cstr = tmp.c_str();
}

IMO that's the best solution. Unfortunately it's not very well known.

You can increase the limit from php.ini file. If you are using windows, you will the get php.ini file from C:\xampp\php directory.

Now changes the following lines & set your limit

post_max_size = 128M
upload_max_filesize = 128M 
max_execution_time = 2000
max_input_time = 3000
memory_limit = 256M

@John-Skeet gave me the clue to fix my own issue around this. As a younger programmer this small issue is easy to miss and hard to diagnose. So Im sharing it in the hopes it will help someone.

My issue was that I wanted to parse the following string contraining a time stamp from a JSON I have no influence over and put it in more useful variables. But I kept getting errors.

So given the following (pay attention to the string parameter inside ofPattern();

String str = "20190927T182730.000Z"

LocalDateTime fin;
fin = LocalDateTime.parse( str, DateTimeFormatter.ofPattern("yyyyMMdd'T'HHmmss.SSSZ") );

Error:

Exception in thread "main" java.time.format.DateTimeParseException: Text 
'20190927T182730.000Z' could not be parsed at index 19

The problem? The Z at the end of the Pattern needs to be wrapped in 'Z' just like the 'T' is. Change "yyyyMMdd'T'HHmmss.SSSZ" to "yyyyMMdd'T'HHmmss.SSS'Z'" and it works.

Removing the Z from the pattern alltogether also led to errors.

Frankly, I'd expect a Java class to have anticipated this.

In python3.6 I tried python3 -m venv myenv, as per the documentation, but it was taking so long. So the very simple and quick command is python -m venv yourenv It worked for me on python3.6.

Session + If

I guess the reason that you haven't found many good libraries is that using a library for authentication is mostly over engineered.

What you are looking for is just a session-binder :) A session with:

if login and user == xxx and pwd == xxx 
   then store an authenticated=true into the session 
if logout destroy session

thats it.

I disagree with your conclusion that the connect-auth plugin is the way to go.

I'm using also connect but I do not use connect-auth for two reasons:

1. IMHO breaks connect-auth the very powerful and easy to read onion-ring architecture of connect. A no-go - my opinion :). You can find a very good and short article about how connect works and the onion ring idea here.

2. If you - as written - just want to use a basic or http login with database or file. Connect-auth is way too big. It's more for stuff like OAuth 1.0, OAuth 2.0 & Co

A very simple authentication with connect

(It's complete. Just execute it for testing but if you want to use it in production, make sure to use https) (And to be REST-Principle-Compliant you should use a POST-Request instead of a GET-Request b/c you change a state :)

var connect = require('connect');
var urlparser = require('url');

var authCheck = function (req, res, next) {
    url = req.urlp = urlparser.parse(req.url, true);

    // ####
    // Logout
    if ( url.pathname == "/logout" ) {
      req.session.destroy();
    }

    // ####
    // Is User already validated?
    if (req.session && req.session.auth == true) {
      next(); // stop here and pass to the next onion ring of connect
      return;
    }

    // ########
    // Auth - Replace this example with your Database, Auth-File or other things
    // If Database, you need a Async callback...
    if ( url.pathname == "/login" && 
         url.query.name == "max" && 
         url.query.pwd == "herewego"  ) {
      req.session.auth = true;
      next();
      return;
    }

    // ####
    // This user is not authorized. Stop talking to him.
    res.writeHead(403);
    res.end('Sorry you are not authorized.\n\nFor a login use: /login?name=max&pwd=herewego');
    return;
}

var helloWorldContent = function (req, res, next) {
    res.writeHead(200, { 'Content-Type': 'text/plain' });
    res.end('authorized. Walk around :) or use /logout to leave\n\nYou are currently at '+req.urlp.pathname);
}

var server = connect.createServer(
      connect.logger({ format: ':method :url' }),
      connect.cookieParser(),
      connect.session({ secret: 'foobar' }),
      connect.bodyParser(),
      authCheck,
      helloWorldContent
);

server.listen(3000);

NOTE

I wrote this statement over a year ago and have currently no active node projects. So there are may be API-Changes in Express. Please add a comment if I should change anything.

It can be done using % operator. i.e. SELECT 50 % 5

All your exercise conditionals are separate and the else is only tied to the last if statement. Use else if to bind them all together in the way I believe you intend.

Set up a virtualenv:

% curl -kLso /tmp/get-pip.py https://bootstrap.pypa.io/get-pip.py 
% sudo python /tmp/get-pip.py

These commands install pip into the global site-packages directory.

% sudo pip install virtualenv

and ditto for virtualenv:

% mkdir -p ~/.virtualenvs

I like my virtualenvs under one tree in my home directory called .virtualenvs

% virtualenv ~/.virtualenvs/lxmltest

Creates a virtualenv.

% . ~/.virtualenvs/lxmltest/bin/activate

Removes the need to specify the full path to pip/python in this virtualenv.

% pip install lxml

Alternatively execute ~/.virtualenvs/lxmltest/bin/pip install lxml if you chose not to follow the previous step. Note, I'm not sure how far along you are, so some of these steps can be safely skipped. Of course, if you mess something up, you can always rm -Rf ~/.virtualenvs/lxmltest and start again from a new virtualenv.

Take a look at ack. It does the .svn exclusion for you automatically, gives you Perl regular expressions, and is a simple download of a single Perl program.

The equivalent of what you're looking for should be, in ack:

ack -L foo

input[type=text]
{
   height: 15px; 
   line-height: 15px;
}

this is correct way to set vertical-middle position.

You don't need to learn JPA. You can use my easy-criteria for JPA2 (https://sourceforge.net/projects/easy-criteria/files/). Here is the example

CriteriaComposer<Pet> petCriteria CriteriaComposer.from(Pet.class).
where(Pet_.type, EQUAL, "Cat").join(Pet_.owner).where(Ower_.name,EQUAL, "foo");

List<Pet> result = CriteriaProcessor.findAllEntiry(petCriteria);

OR

List<Tuple> result =  CriteriaProcessor.findAllTuple(petCriteria);

Using an ORDER BY in a subquery is not the best solution to this problem.

The best solution to get the max(post_date) by author is to use a subquery to return the max date and then join that to your table on both the post_author and the max date.

The solution should be:

SELECT p1.* 
FROM wp_posts p1
INNER JOIN
(
    SELECT max(post_date) MaxPostDate, post_author
    FROM wp_posts
    WHERE post_status='publish'
       AND post_type='post'
    GROUP BY post_author
) p2
  ON p1.post_author = p2.post_author
  AND p1.post_date = p2.MaxPostDate
WHERE p1.post_status='publish'
  AND p1.post_type='post'
order by p1.post_date desc

If you have the following sample data:

CREATE TABLE wp_posts
    (`id` int, `title` varchar(6), `post_date` datetime, `post_author` varchar(3))
;

INSERT INTO wp_posts
    (`id`, `title`, `post_date`, `post_author`)
VALUES
    (1, 'Title1', '2013-01-01 00:00:00', 'Jim'),
    (2, 'Title2', '2013-02-01 00:00:00', 'Jim')
;

The subquery is going to return the max date and author of:

MaxPostDate | Author
2/1/2013    | Jim

Then since you are joining that back to the table, on both values you will return the full details of that post.

See SQL Fiddle with Demo.

To expand on my comments about using a subquery to accurate return this data.

MySQL does not force you to GROUP BY every column that you include in the SELECT list. As a result, if you only GROUP BY one column but return 10 columns in total, there is no guarantee that the other column values which belong to the post_author that is returned. If the column is not in a GROUP BY MySQL chooses what value should be returned.

Using the subquery with the aggregate function will guarantee that the correct author and post is returned every time.

As a side note, while MySQL allows you to use an ORDER BY in a subquery and allows you to apply a GROUP BY to not every column in the SELECT list this behavior is not allowed in other databases including SQL Server.

Both means "every item in a set of two things". The two things being "left" and "right"

This is one of the way to add google site search to websites:

<form action="https://www.google.com/search" class="searchform" method="get" name="searchform" target="_blank">_x000D_
<input name="sitesearch" type="hidden" value="example.com">_x000D_
<input autocomplete="on" class="form-control search" name="q" placeholder="Search in example.com" required="required"  type="text">_x000D_
<button class="button" type="submit">Search</button>_x000D_
</form>

I'd like to expand on Obertklep's answer. In his example it is an NPM module called body-parser which is doing most of the work. Where he puts req.body.name, I believe he/she is using body-parser to get the contents of the name attribute(s) received when the form is submitted.

If you do not want to use Express, use querystring which is a built-in Node module. See the answers in the link below for an example of how to use querystring.

It might help to look at this answer, which is very similar to your quest.

What's the default superuser username/password for postgres after a new install?:

CAUTION The answer about changing the UNIX password for "postgres" through "$ sudo passwd postgres" is not preferred, and can even be DANGEROUS!

This is why: By default, the UNIX account "postgres" is locked, which means it cannot be logged in using a password. If you use "sudo passwd postgres", the account is immediately unlocked. Worse, if you set the password to something weak, like "postgres", then you are exposed to a great security danger. For example, there are a number of bots out there trying the username/password combo "postgres/postgres" to log into your UNIX system.

What you should do is follow Chris James's answer:

sudo -u postgres psql postgres

# \password postgres

Enter new password: 

To explain it a little bit...

Use the throw statement.

JavaScript doesn't care what the exception type is (as Java does). JavaScript just notices, there's an exception and when you catch it, you can "look" what the exception "says".

If you have different exception types you have to throw, I'd suggest to use variables which contain the string/object of the exception i.e. message. Where you need it use "throw myException" and in the catch, compare the caught exception to myException.

Try this way:

int a[][] = {{1,2}, {3,4}};

int b[] = {1, 2, 3, 4};

As @kosev said in his answer you can use JobIntentService. But I use an alternative solution - I catch IllegalStateException and start the service as foreground. For example, this function starts my service:

@JvmStatic
protected fun startService(intentAction: String, serviceType: Class<*>, intentExtraSetup: (Intent) -> Unit) {
    val context = App.context
    val intent = Intent(context, serviceType)
    intent.action = intentAction
    intentExtraSetup(intent)
    intent.putExtra(NEED_FOREGROUND_KEY, false)

    try {
        context.startService(intent)
    }
    catch (ex: IllegalStateException) {
        intent.putExtra(NEED_FOREGROUND_KEY, true)
        if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            context.startForegroundService(intent)
        }
        else {
            context.startService(intent)
        }
    }
}

and when I process Intent I do such thing:

override fun onHandleIntent(intent: Intent?) {
    val needToMoveToForeground = intent?.getBooleanExtra(NEED_FOREGROUND_KEY, false) ?: false
    if(needToMoveToForeground) {
        val notification = notificationService.createSyncServiceNotification()
        startForeground(notification.second, notification.first)

        isInForeground = true
    }

    intent?.let {
        getTask(it)?.process()
    }
}

Expanding a little bit on the previous answer, you can make the footnote links clickable here as well. First define the footnote at the bottom like this

<a name="myfootnote1">1</a>: Footnote content goes here

Then reference it at some other place in the document like this

<sup>[1](#myfootnote1)</sup>

I encountered a similar problem when I was using the below to obtain connection factory ConnectionFactory factory = new
ActiveMQConnectionFactory("admin","admin","tcp://:61616");

Its resolved when I changed it to the below

ConnectionFactory factory = new ActiveMQConnectionFactory("tcp://:61616");

The below then showed that my Q size was increasing.. http://:8161/admin/queues.jsp

For that to work there needs to be an executable named 'code' in your bash path, which some installers add for you, but this one apparently did not. The best way to do this could be to add a symlink to the visual studio code app in your /usr/local/bin folder. You can do this by using a command like the following in your terminal.

ln -s "/Path/To/Visual Studio Code" "/usr/local/bin/code"

You will likely need to put sudo in front of that to have the permissions for it to complete successfully.

Simply :

JVM is the virtual machine Java code executes on

JRE is the environment (standard libraries and JVM) required to run Java applications

JDK is the JRE with developer tools and documentation

You should leave one side empty, hence the name "partial range".

let newStr = str[..<index]

The same stands for partial range from operators, just leave the other side empty:

let newStr = str[index...]

Keep in mind that these range operators return a Substring. If you want to convert it to a string, use String's initialization function:

let newStr = String(str[..<index])

You can read more about the new substrings here.

You are looking for git merge-base. Usage:

$ git merge-base branch2 branch3
050dc022f3a65bdc78d97e2b1ac9b595a924c3f2

Angular 2, 4 and Angular 5 compatible!

You have provided so few details, so I'll try to answer your question without them.

You can use Interpolation:

<img src={{imagePath}} />

Or you can use a template expression:

<img [src]="imagePath" />

In a ngFor loop it might look like this:

<div *ngFor="let student of students">
   <img src={{student.ImagePath}} />
</div>

I know I'm a little late to the party here, but I figured I might be able to help any future googlers since none of these answers fixed my issue. Ferdi265's answer helped immensely though.

I'm trying to create my own Linked list, so the following code is what worked for me:

package myList;
import java.lang.reflect.Array;

public class MyList<TYPE>  {

    private Node<TYPE> header = null;

    public void clear() {   header = null;  }

    public void add(TYPE t) {   header = new Node<TYPE>(t,header);    }

    public TYPE get(int position) {  return getNode(position).getObject();  }

    @SuppressWarnings("unchecked")
    public TYPE[] toArray() {       
        TYPE[] result = (TYPE[])Array.newInstance(header.getObject().getClass(),size());        
        for(int i=0 ; i<size() ; i++)   result[i] = get(i); 
        return result;
    }


    public int size(){
         int i = 0;   
         Node<TYPE> current = header;
         while(current != null) {   
           current = current.getNext();
           i++;
        }
        return i;
    }  

In the toArray() method lies the way to create an array of a generic type for me:

TYPE[] result = (TYPE[])Array.newInstance(header.getObject().getClass(),size());    

This work at least in the Debian Jessie image hosted by Google:

The way to enable to switch from you regular to the root user (AKA “super user”) after authentificating with your Google Computer Engine (GCE) User in the local environment (your Linux server in GCE) is pretty straight forward, in fact it just involves just one command to enable it and another every time to use it:

$ sudo passwd
Enter the new UNIX password: <your new root password>
Retype the new UNIX password: <your new root password>
passwd: password updated successfully

After executing the previous command and once logged with your GCE User you will be able to switch to root anytime by just entering the following command:

$ su
Password: <your newly created root password>
root@intance:/#

As we say in economics “caveat emptor” or buyer be aware: Using the root user is far from a best practice in system’s administration. Using it can be the cause a lot of trouble, from wiping everything in your drives and boot disks without a hiccup to many other nasty stuff that would be laborious to backtrack, troubleshoot and rebuilt. On the other hand, I have never met a SysAdmin that doesn’t think he knows better and root more than he should.

REMEMBER: We humans are programmed in such a way that given enough time at one at some point or another are going to press enter without taking into account that we have escalated to root and I can assure you that it will great source of pain, regret and extra work. PLEASE USE ROOT PRIVILEGES SPARSELY AND WITH EXTREME CARE.

Having said all the boring stuff, Have fun, live on the edge, life is short, you only get to live it once, the more you break the more you learn.

Try this

link_to "+ Service", my_services_new_path(:account_id => acct.id)

it will pass the account_id as you want.

For more details on link_to use this http://api.rubyonrails.org/classes/ActionView/Helpers/UrlHelper.html#method-i-link_to

'a' in x

and a quick search reveals some nice information about it: http://docs.python.org/3/tutorial/datastructures.html#dictionaries

You can have any length, but of course, there can be a memory issue on the computer if the String input is too long. The output is always 32 characters.

Convert.ToInt32 is the best way to convert

Take your pick here.

Tkinter is in the Python stdlib.

try to use px

.modal .modal-dialog {
  width: 850px;
}

just change the size.

I find this way readable and rubyish:

add_quotes =- > x{"'#{x}'"}

p  ['12','34','35','231'].map(&add_quotes).join(',') => "'12','34','35','231'"

To set timeout on a per page level, you could use this simple code:

Page.Server.ScriptTimeout = 60;

Note: 60 means 60 seconds, this time-out applies only if the debug attribute in the compilation element is False.

you need to put the following name/value pairs into a hash table and call this constructor:

public InitialContext(Hashtable<?,?> environment)

the exact values depend on your application server, this example is for jboss

jndi.java.naming.provider.url=jnp://localhost:1099/
jndi.java.naming.factory.url=org.jboss.naming:org.jnp.interfaces
jndi.java.naming.factory.initial=org.jnp.interfaces.NamingContextFactory

I tried the above solutions but it didn't work for me, just incase there any other person in the same shoes, this is what I did. I updated apt-get with the following command

sudo add-apt-repository ppa:ondrej/php

this i installed with php curl for the version of php that i was using, mine was

sudo apt-get install php7.1-curl

I would encourage you to see this youtube video which demonstrates the difference between C# bin and obj folders and also explains how we get the benefit of incremental/conditional compilation.

C# compilation is a two-step process, see the below diagram for more details:

1. Compiling: In compiling phase individual C# code files are compiled into individual compiled units. These individual compiled code files go in the OBJ directory.
2. Linking: In the linking phase these individual compiled code files are linked to create single unit DLL and EXE. This goes in the BIN directory.

If you compare both bin and obj directory you will find greater number of files in the "obj" directory as it has individual compiled code files while "bin" has a single unit.

I have a feeling that the username and password that you are sending should be part of the Authorization Header. So the code below shows you how to create the Base64 string of the username and password. I also included an example of sending the POST data. In my case it was a phone_number parameter.

string credentials = Convert.ToBase64String(Encoding.ASCII.GetBytes(_username + ":" + _password));

HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(Request);
webRequest.Headers.Add("Authorization", string.Format("Basic {0}", credentials));
webRequest.ContentType = "application/x-www-form-urlencoded";
webRequest.Method = WebRequestMethods.Http.Post;
webRequest.AllowAutoRedirect = true;
webRequest.Proxy = null;

string data = "phone_number=19735559042"; 
byte[] dataStream = Encoding.UTF8.GetBytes(data);

request.ContentLength = dataStream.Length;
Stream newStream = webRequest.GetRequestStream();
newStream.Write(dataStream, 0, dataStream.Length);
newStream.Close();

HttpWebResponse response = (HttpWebResponse)webRequest.GetResponse();
Stream stream = response.GetResponseStream();
StreamReader streamreader = new StreamReader(stream);
string s = streamreader.ReadToEnd();

So I assume your permissions table has a foreign key reference to admin_accounts table. If so because of referential integrity you will only be able to add permissions for account ids exsiting in the admin accounts table. Which also means that you wont be able to enter a user_account_id [assuming there are no duplicates!]

Yes, you could append ;Connection Timeout=30 to your connection string and specify the value you wish.

The timeout value set in the Connection Timeout property is a time expressed in seconds. If this property isn't set, the timeout value for the connection is the default value (15 seconds).

Moreover, setting the timeout value to 0, you are specifying that your attempt to connect waits an infinite time. As described in the documentation, this is something that you shouldn't set in your connection string:

A value of 0 indicates no limit, and should be avoided in a ConnectionString because an attempt to connect waits indefinitely.

An O(1) sollution might be to just guess: The smallest number in your array will often be 0. 0 crops up everywhere. Given that you are only looking at unsigned numbers. But even then: 0 is good enough. Also, looking through all elements for the smallest number is a real pain. Why not just use 0? It could actually be the correct result!

If the interviewer/your teacher doesn't like that answer, try 1, 2 or 3. They also end up being in most homework/interview-scenario numeric arrays...

On a more serious side: How often will you need to perform this operation on the array? Because the sollutions above are all O(n). If you want to do that m times to a list you will be adding new elements to all the time, why not pay some time up front and create a heap? Then finding the smallest element can really be done in O(1), without resulting to cheating.

If you had a table that already had a existing constraints based on lets say: name and lastname and you wanted to add one more unique constraint, you had to drop the entire constrain by:

ALTER TABLE your_table DROP CONSTRAINT constraint_name;

Make sure tha the new constraint you wanted to add is unique/ not null ( if its Microsoft Sql, it can contain only one null value) across all data on that table, and then you could re-create it.

ALTER TABLE table_name
ADD CONSTRAINT constraint_name UNIQUE (column1, column2, ... column_n);

    isset('user.permissions.saveProject', args);

    function isset(string, context) {
        try {
            var arr = string.split('.');
            var checkObj = context || window;

            for (var i in arr) {
                if (checkObj[arr[i]] === undefined) return false;
                checkObj = checkObj[arr[i]];
            }

            return true;
        } catch (e) {
            return false;
        }
    }

For me it's due react-native compatibility issue with Xcode9.4. I resolved using the following steps. on my project /ROOT

1. rm -rf node_modules
2. react-native upgrade
3. npm install
4. react-native run-ios

SOLVES the issue, this thread helped me to understand the issue.

In this dynamicVar, I am creating dynamic variable "ele[i]" in which I will put value/elements of "arr" according to index. ele is blank at initial stage, so we will copy the elements of "arr" in array "ele".

function dynamicVar(){
            var arr = ['a','b','c'];
            var ele = [];
            for (var i = 0; i < arr.length; ++i) {
                ele[i] = arr[i];
 ]               console.log(ele[i]);
            }
        }
        
        dynamicVar();

What do you actually want to achieve? What your code does is it tries to connect to a server located at 192.168.1.104:4000. Is this the address of a server that sends the messages (because this looks like a client-side code)? If I run fake server locally:

$ nc -l 4000

...and change socket address to localhost:4000, it will work and try to read something from nc-created server.

What you probably want is to create a ServerSocket and listen on it:

ServerSocket serverSocket = new ServerSocket(4000);
Socket socket = serverSocket.accept();

The second line will block until some other piece of software connects to your machine on port 4000. Then you can read from the returned socket. Look at this tutorial, this is actually a very broad topic (threading, protocols...)

I guess this answer will just be lost in between all the other ones, but anyway, here goes.

I ended up on this question via Google because I wanted to check if a string was numeric so that I could just use double.Parse("123") instead of the TryParse() method.

Why? Because it's annoying to have to declare an out variable and check the result of TryParse() before you know if the parse failed or not. I want to use the ternary operator to check if the string is numerical and then just parse it in the first ternary expression or provide a default value in the second ternary expression.

Like this:

var doubleValue = IsNumeric(numberAsString) ? double.Parse(numberAsString) : 0;

It's just a lot cleaner than:

var doubleValue = 0;
if (double.TryParse(numberAsString, out doubleValue)) {
    //whatever you want to do with doubleValue
}

I made a couple extension methods for these cases:

Extension method one

public static bool IsParseableAs<TInput>(this string value) {
    var type = typeof(TInput);

    var tryParseMethod = type.GetMethod("TryParse", BindingFlags.Static | BindingFlags.Public, Type.DefaultBinder,
        new[] { typeof(string), type.MakeByRefType() }, null);
    if (tryParseMethod == null) return false;

    var arguments = new[] { value, Activator.CreateInstance(type) };
    return (bool) tryParseMethod.Invoke(null, arguments);
}

Example:

"123".IsParseableAs<double>() ? double.Parse(sNumber) : 0;

Because IsParseableAs() tries to parse the string as the appropriate type instead of just checking if the string is "numeric" it should be pretty safe. And you can even use it for non numeric types that have a TryParse() method, like DateTime.

The method uses reflection and you end up calling the TryParse() method twice which, of course, isn't as efficient, but not everything has to be fully optimized, sometimes convenience is just more important.

This method can also be used to easily parse a list of numeric strings into a list of double or some other type with a default value without having to catch any exceptions:

var sNumbers = new[] {"10", "20", "30"};
var dValues = sNumbers.Select(s => s.IsParseableAs<double>() ? double.Parse(s) : 0);

Extension method two

public static TOutput ParseAs<TOutput>(this string value, TOutput defaultValue) {
    var type = typeof(TOutput);

    var tryParseMethod = type.GetMethod("TryParse", BindingFlags.Static | BindingFlags.Public, Type.DefaultBinder,
        new[] { typeof(string), type.MakeByRefType() }, null);
    if (tryParseMethod == null) return defaultValue;

    var arguments = new object[] { value, null };
    return ((bool) tryParseMethod.Invoke(null, arguments)) ? (TOutput) arguments[1] : defaultValue;
}

This extension method lets you parse a string as any type that has a TryParse() method and it also lets you specify a default value to return if the conversion fails.

This is better than using the ternary operator with the extension method above as it only does the conversion once. It still uses reflection though...

Examples:

"123".ParseAs<int>(10);
"abc".ParseAs<int>(25);
"123,78".ParseAs<double>(10);
"abc".ParseAs<double>(107.4);
"2014-10-28".ParseAs<DateTime>(DateTime.MinValue);
"monday".ParseAs<DateTime>(DateTime.MinValue);

Outputs:

123
25
123,78
107,4
28.10.2014 00:00:00
01.01.0001 00:00:00

UTC dates don't need any timezone info since they're UTC, which by definition means that they have no offset.

Here is a working example for file upload to api:

Step 1: HTML Template (file-upload.component.html)

Define simple input tag of type file. Add a function to (change)-event for handling choosing files.

<div class="form-group">
    <label for="file">Choose File</label>
    <input type="file"
           id="file"
           (change)="handleFileInput($event.target.files)">
</div>

Step 2: Upload Handling in TypeScript (file-upload.component.ts)

Define a default variable for selected file.

fileToUpload: File = null;

Create function which you use in (change)-event of your file input tag:

handleFileInput(files: FileList) {
    this.fileToUpload = files.item(0);
}

If you want to handle multifile selection, than you can iterate through this files array.

Now create file upload function by calling you file-upload.service:

uploadFileToActivity() {
    this.fileUploadService.postFile(this.fileToUpload).subscribe(data => {
      // do something, if upload success
      }, error => {
        console.log(error);
      });
  }

Step 3: File-Upload Service (file-upload.service.ts)

By uploading a file via POST-method you should use FormData, because so you can add file to http request.

postFile(fileToUpload: File): Observable<boolean> {
    const endpoint = 'your-destination-url';
    const formData: FormData = new FormData();
    formData.append('fileKey', fileToUpload, fileToUpload.name);
    return this.httpClient
      .post(endpoint, formData, { headers: yourHeadersConfig })
      .map(() => { return true; })
      .catch((e) => this.handleError(e));
}

So, This is very simple working example, which I use everyday in my work.

You can use setTimeout to run the function/command once or setInterval to run the function/command at specified intervals.

var a = setTimeout("alert('run just one time')",500);
var b = setInterval("alert('run each 3 seconds')",3000);

//To abort the interval you can use this:
clearInterval(b);

Your CarBootSaleList class is not a list. It is a class that contain a list.

You have three options:

Make your CarBootSaleList object implement IEnumerable

or

make your CarBootSaleList inherit from List<CarBootSale>

or

if you are lazy this could almost do the same thing without extra coding

List<List<CarBootSale>>

I have added dataType: 'jsonp' and it works!

$.ajax({
   type: 'POST',
   crossDomain: true,
   dataType: 'jsonp',
   url: '',
   success: function(jsondata){

   }
})

JSONP is a method for sending JSON data without worrying about cross-domain issues. Read More

I'm going to add my solution to my particular problem. I had two collections at the same level I needed to include. The final solution looked like this.

var recipe = _bartendoContext.Recipes
    .Include(r => r.Ingredients)
    .ThenInclude(r => r.Ingredient)
    .Include(r => r.Ingredients)
    .ThenInclude(r => r.MeasurementQuantity)
    .FirstOrDefault(r => r.Id == recipeId);
if (recipe?.Ingredients == null) return 0m;
var abv = recipe.Ingredients.Sum(ingredient => ingredient.Ingredient.AlcoholByVolume * ingredient.MeasurementQuantity.Quantity);
return abv;

This is calculating the percent alcohol by volume of a given drink recipe. As you can see I just included the ingredients collection twice then included the ingredient and quantity onto that.

You shouldn't be importing android.R. That should be automatically generated and recognized. This question contains a lot of helpful tips if you get some error referring to R after removing the import.

Some basic steps after removing the import, if those errors appear:

• Clean your build, then rebuild
• Make sure there are no errors or typos in your XML files
• Make sure your resource names consist of [a-z0-9.]. Capitals or symbols are not allowed for some reason.
• Perform a Gradle sync (via Tools > Android > Sync Project with Gradle Files)

Fast Alternative

I ran some tests (on postgres 9.5) using two tables with ~2M rows each. This query below performed at least 5* better than the other queries proposed:

-- Count
SELECT count(*) FROM (
    (SELECT id FROM table1) EXCEPT (SELECT id FROM table2)
) t1_not_in_t2;

-- Get full row
SELECT table1.* FROM (
    (SELECT id FROM table1) EXCEPT (SELECT id FROM table2)
) t1_not_in_t2 JOIN table1 ON t1_not_in_t2.id=table1.id;

You can use ILDASM...

ildasm.exe C:\foo.dll /metadata[=MDHEADER] /text /noil

and check for the 'Metadata section' in the output. It would be something like this:

Metadata section: 0x424a5342, version: 1.1, extra: 0, version len: 12, version: v4.0.30319

The 'version' tag will tell you the .NET Framework version. In the above example it is 4.0.30319

I agree with Int.TryParse but as an alternative you could use Regex.

 Regex nonNumericRegex = new Regex(@"\D");
 if (nonNumericRegex.IsMatch(txtEvDistance.Text))
 {
   //Contains non numeric characters.
   return false;
 }

Building @lgvalle's answer.

2015 Update

Now you can use DrawableCompat to tint all kind of drawables. For example:

Drawable progress = ratingBar.getProgressDrawable(); DrawableCompat.setTint(progress, Color.WHITE); This is backwards compatible up to API 4

LayerDrawable drawable = (LayerDrawable) getProgressDrawable();
Drawable progress = drawable.getDrawable(2);
DrawableCompat.setTint(progress, getResources().getColor(COLOR1));
progress = drawable.getDrawable(1);
DrawableCompat.setTintMode(progress, PorterDuff.Mode.DST_ATOP);
DrawableCompat.setTint(progress, getResources().getColor(COLOR1));
DrawableCompat.setTintMode(progress, PorterDuff.Mode.SRC_ATOP);
DrawableCompat.setTint(progress, getResources().getColor(COLOR2));
progress = drawable.getDrawable(0);
DrawableCompat.setTint(progress, getResources().getColor(COLOR2));

This will keep the fraction steps colors.

All you have to do is read the code on getbootstrap.com:

Codepen

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script>_x000D_
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/bootstrap.min.css">_x000D_
_x000D_
<nav class="navbar navbar-inverse navbar-static-top" role="navigation">_x000D_
  <div class="container">_x000D_
    <div class="navbar-header">_x000D_
      <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1">_x000D_
                    <span class="sr-only">Toggle navigation</span>_x000D_
                    <span class="icon-bar"></span>_x000D_
                    <span class="icon-bar"></span>_x000D_
                    <span class="icon-bar"></span>_x000D_
                </button>_x000D_
    </div>_x000D_
_x000D_
    <!-- Collect the nav links, forms, and other content for toggling -->_x000D_
    <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">_x000D_
      <ul class="nav navbar-nav">_x000D_
        <li><a href="index.php">Home</a></li>_x000D_
        <li><a href="about.php">About</a></li>_x000D_
        <li><a href="#portfolio">Portfolio</a></li>_x000D_
        <li><a href="#">Blog</a></li>_x000D_
        <li><a href="contact.php">Contact</a></li>_x000D_
      </ul>_x000D_
    </div>_x000D_
  </div>_x000D_
</nav>

You also can use

NSString *className = [[myObject class] description]; 

on any NSObject

from a "Mr. Make post" https://www.cmcrossroads.com/article/printing-value-makefile-variable

Add the following rule to your Makefile:

print-%  : ; @echo $* = $($*)

Then, if you want to find out the value of a makefile variable, just:

make print-VARIABLE

and it will return:

VARIABLE = the_value_of_the_variable

Alternative:(Using Sierra or High Sierra and Ionic)

1. Copy and Paste the App Store icon to the desktop.
2. Open the image. Click File Menu->Duplicate.
3. Save it by unticking the Alpha channel.
4. Replace the current App Store icon with this one.
5. Validate and upload.

In your my.ini, write this:

[mysqld]
sql_mode = "STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"

depend on your version. Or:

[mysqld]
sql_mode = ""

or simply remove this: ONLY_FULL_GROUP_BY

In MAMP, You could load huge files by :

1. creating a new folder in this directory /MAMP/bin/phpMyAdmin/"folderName"

2. and then edit "/MAMP/bin/phpMyAdmin/config.inc.php" line 531 :

      $cfg['UploadDir']= 'folderName';   
   

3. Copy your .sql or .csv Files into this folder.

4. Now you will have another option in "PhpMyAdmin" : Select from the web server upload directory newFolder/: You could select your file and import it.

   You could load any file now !!

I use div instead of tables and am able to target classes within the main class, as below:

CSS

.main {
    .width: 800px;
    .margin: 0 auto;
    .text-align: center;
}
.main .table {
    width: 80%;
}
.main .row {
   / ***something ***/
}
.main .column {
    font-size: 14px;
    display: inline-block;
}
.main .left {
    width: 140px;
    margin-right: 5px;
    font-size: 12px;
}
.main .right {
    width: auto;
    margin-right: 20px;
    color: #fff;
    font-size: 13px;
    font-weight: normal;
}

HTML

<div class="main">
    <div class="table">
        <div class="row">
            <div class="column left">Swing Over Bed</div>
            <div class="column right">650mm</div>
            <div class="column left">Swing In Gap</div>
            <div class="column right">800mm</div>
        </div>
    </div>
</div>

If you want to style a particular "cell" exclusively you can use another sub-class or the id of the div e.g:

.main #red { color: red; }

<div class="main">
    <div class="table">
        <div class="row">
            <div id="red" class="column left">Swing Over Bed</div>
            <div class="column right">650mm</div>
            <div class="column left">Swing In Gap</div>
            <div class="column right">800mm</div>
        </div>
    </div>
</div>

strgroupids = strgroupids.Remove(strgroupids.Length - 1);

MSDN:

String.Remove(Int32):

Deletes all the characters from this string beginning at a specified position and continuing through the last position

The SQL standard way to implement recursive queries, as implemented e.g. by IBM DB2 and SQL Server, is the WITH clause. See this article for one example of translating a CONNECT BY into a WITH (technically a recursive CTE) -- the example is for DB2 but I believe it will work on SQL Server as well.

Edit: apparently the original querant requires a specific example, here's one from the IBM site whose URL I already gave. Given a table:

CREATE TABLE emp(empid  INTEGER NOT NULL PRIMARY KEY,
                 name   VARCHAR(10),
                 salary DECIMAL(9, 2),
                 mgrid  INTEGER);

where mgrid references an employee's manager's empid, the task is, get the names of everybody who reports directly or indirectly to Joan. In Oracle, that's a simple CONNECT:

SELECT name 
  FROM emp
  START WITH name = 'Joan'
  CONNECT BY PRIOR empid = mgrid

In SQL Server, IBM DB2, or PostgreSQL 8.4 (as well as in the SQL standard, for what that's worth;-), the perfectly equivalent solution is instead a recursive query (more complex syntax, but, actually, even more power and flexibility):

WITH n(empid, name) AS 
   (SELECT empid, name 
    FROM emp
    WHERE name = 'Joan'
        UNION ALL
    SELECT nplus1.empid, nplus1.name 
    FROM emp as nplus1, n
    WHERE n.empid = nplus1.mgrid)
SELECT name FROM n

Oracle's START WITH clause becomes the first nested SELECT, the base case of the recursion, to be UNIONed with the recursive part which is just another SELECT.

SQL Server's specific flavor of WITH is of course documented on MSDN, which also gives guidelines and limitations for using this keyword, as well as several examples.

Most likely the problem lies outside the code you are showing us here. You are trying to update an object that is not associated with the current session. If it is not the Invoice, then maybe it is an InvoiceItem that has already been persisted, obtained from the db, kept alive in some sort of session and then you try to persist it on a new session. This is not possible. As a general rule, never keep your persisted objects alive across sessions.

The solution will ie in obtaining the whole object graph from the same session you are trying to persist it with. In a web environment this would mean:

• Obtain the session
• Fetch the objects you need to update or add associations to. Preferabley by their primary key
• Alter what is needed
• Save/update/evict/delete what you want
• Close/commit your session/transaction

If you keep having issues post some of the code that is calling your service.

for others scratching their heads, I came across this error because I had innapropriately const-qualified one of the arguments to a method in a base class, so the derived class member functions were not over-riding it. so make sure you don't have something like

class Base 
{
  public:
      virtual void foo(int a, const int b) = 0;
}
class D: public Base 
{
 public:
     void foo(int a, int b){};
}

This is because an XML documentation file has been specified in your Project Properties and Your Method/Class is public and lack documentation.
You can either :

1. Disable XML documentation:

   Right Click on your Project -> Properties -> 'Build' tab -> uncheck XML Documentation File.

2. Sit and write the documentation yourself!

Summary of XML documentation goes like this:

/// <summary>
/// Description of the class/method/variable
/// </summary>
..declaration goes here..

If the object was recently created, you can check the Schema Changes History report, within the SQL Server Management Studio, which "provides a history of all committed DDL statement executions within the Database recorded by the default trace":

You then can search for the create statements of the objects. Among all the information displayed, there is the login name of whom executed the DDL statement.

Why not use the <textarea> tag?

?<textarea id="txtArea" rows="10" cols="70"></textarea>

Here is a one-liner for you.

JQuery Users:

Replace $jQueryObject with your jQuery object. i.e $('div').

Object.values($jQueryObject.get(0).attributes).map(attr => console.log(`${attr.name + ' : ' + attr.value}`));

Vanilla Javascript Users:

Replace $domElement with your HTML DOM selector. i.e document.getElementById('demo').

Object.values($domElement.attributes).map(attr => console.log(`${attr.name + ' : ' + attr.value}`));

Cheers!!

< stands for lesser than (<) symbol and, the > sign stands for greater than (>) symbol.

For more information on HTML Entities, visit this link:

https://www.w3schools.com/HTML/html_entities.asp

One nice way to break out of several nested loops is to refactor your code into a function:

void foo()
{
    for(unsigned int i=0; i < 50; i++)
    {
        for(unsigned int j=0; j < 50; j++)
        {
            for(unsigned int k=0; k < 50; k++)
            {
                // If condition is true
                return;
            }
        }
    }
}

This is a corrected version of https://stackoverflow.com/a/33017514/5973334

This will try to parse a string and return either int or float depending on what the string represents. It might rise parsing exceptions or have some unexpected behaviour.

  def get_int_or_float(v):
        number_as_float = float(v)
        number_as_int = int(number_as_float)
        return number_as_int if number_as_float == number_as_int else 
        number_as_float

Here's how to do it.

Multi-line works perfectly if you do it this way. Bullet will automatically size with text. Indent is straight-forward: it's just the padding-left on the li. Minimal CSS required.

ul {_x000D_
  margin: 0;_x000D_
  padding: 0;_x000D_
  list-style-type: none;_x000D_
}_x000D_
ul > li {_x000D_
  position: relative;_x000D_
  padding-left: 12px;_x000D_
}_x000D_
ul > li:before {_x000D_
  content: "•";_x000D_
  position: absolute;_x000D_
  left: 0;_x000D_
}_x000D_
div {_x000D_
  border: 1px solid #ccc;_x000D_
}

<div>_x000D_
  <ul>_x000D_
    <li>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Inventore, explicabo iste numquam dolorem harum natus! Voluptate magni expedita, eaque voluptates, aliquam maiores vel quia repellat a ipsum possimus eveniet, blanditiis.</li>_x000D_
    <li>Repudiandae repellendus laboriosam, odio vero debitis non quisquam provident deserunt, ratione facilis suscipit delectus sunt aliquid, in maxime autem optio, exercitationem iusto fugiat itaque omnis assumenda est a praesentium? Natus?</li>_x000D_
    <li>Voluptatem, distinctio, eius, soluta, atque laboriosam tempora magnam sequi saepe architecto accusamus hic facilis! Tenetur, necessitatibus. Ut ipsam, officia omnis obcaecati vero consectetur vel similique nam consequatur quidem at doloremque.</li>_x000D_
  </ul>_x000D_
</div>

If you mean to create a new form when a button is clicked, the below code may be of some use to you:

private void settingsButton_Click(Object sender, EventArgs e)
{
    // Create a new instance of the Form2 class
    Form2 settingsForm = new Form2();

    // Show the settings form
    settingsForm.Show();
}

From here, you could also use the 'Show Dialog' method

Open preference -> appearance & behaviour -> System settings -> select (open project in new window) then apply.

Then you could open and edit multiple projects.

The powerful text-based file manager mc (Midnight Commander, vaguely reminding the Norton Commander of old DOS times) has the built-in capability of inspecting and unpacking .rpm and .rpms files, just "open" the .rpm(s) file within mc and select CONTENTS.cpio: for an rpm you get access to the install tree, for an rpms you get access to the .spec file and all the source packages.

mybe your hive metastore are inconsistent! I'm in this scene.

first. I run

 $ schematool -dbType mysql -initSchema  

then I found this

Error: Duplicate key name 'PCS_STATS_IDX' (state=42000,code=1061) org.apache.hadoop.hive.metastore.HiveMetaException: Schema initialization FAILED! Metastore state would be inconsistent !!

then I run

 $ schematool -dbType mysql -info

found this error

Hive distribution version: 2.3.0 Metastore schema version: 1.2.0 org.apache.hadoop.hive.metastore.HiveMetaException: Metastore schema version is not compatible. Hive Version: 2.3.0, Database Schema Version: 1.2.0

• drop mysql database, the database named hive_db
• run schematool -dbType mysql -initSchema for initialize metadata

You can use the asXML method

echo $xml->asXML();

You can also give it a filename

$xml->asXML('filename.xml');

http://www.php.net/manual/en/function.call-user-func-array.php

call_user_func_array('func',$myArgs);

Reason #1

There was a point where buggy/lazy implementations of HTML/XHTML renderers were more common than those that got it right. Many years ago, I regularly encountered rendering problems in mainstream browsers resulting from the use of unencoded quote chars in regular text content of HTML/XHTML documents. Though the HTML spec has never disallowed use of these chars in text content, it became fairly standard practice to encode them anyway, so that non-spec-compliant browsers and other processors would handle them more gracefully. As a result, many "old-timers" may still do this reflexively. It is not incorrect, though it is now probably unnecessary, unless you're targeting some very archaic platforms.

Reason #2

When HTML content is generated dynamically, for example, by populating an HTML template with simple string values from a database, it's necessary to encode each value before embedding it in the generated content. Some common server-side languages provided a single function for this purpose, which simply encoded all chars that might be invalid in some context within an HTML document. Notably, PHP's htmlspecialchars() function is one such example. Though there are optional arguments to htmlspecialchars() that will cause it to ignore quotes, those arguments were (and are) rarely used by authors of basic template-driven systems. The result is that all "special chars" are encoded everywhere they occur in the generated HTML, without regard for the context in which they occur. Again, this is not incorrect, it's simply unnecessary.

I think your question isn't quite clear. There are several answers here on how to catch the data coming into a Linux's serial port, but perhaps your problem is the other way around?

If you need to catch the data coming out of a Linux's serial port and send it to a server, there are several little hardware gizmos that can do this, starting with the simple serial print server such as this Lantronix gizmo.

No, I'm not affiliated with Lantronix in any way.

TL;DR

T findOne(ID id) (name in the old API) / Optional<T> findById(ID id) (name in the new API) relies on EntityManager.find() that performs an entity eager loading.

T getOne(ID id) relies on EntityManager.getReference() that performs an entity lazy loading. So to ensure the effective loading of the entity, invoking a method on it is required.

findOne()/findById() is really more clear and simple to use than getOne().
So in the very most of cases, favor findOne()/findById() over getOne().

API Change

From at least, the 2.0 version, Spring-Data-Jpa modified findOne().
Previously, it was defined in the CrudRepository interface as :

T findOne(ID primaryKey);

Now, the single findOne() method that you will find in CrudRepository is which one defined in the QueryByExampleExecutor interface as :

<S extends T> Optional<S> findOne(Example<S> example);

That is implemented finally by SimpleJpaRepository, the default implementation of the CrudRepository interface.
This method is a query by example search and you don't want to that as replacement.

In fact, the method with the same behavior is still there in the new API but the method name has changed.
It was renamed from findOne() to findById() in the CrudRepository interface :

Optional<T> findById(ID id); 

Now it returns an Optional. Which is not so bad to prevent NullPointerException.

So, the actual choice is now between Optional<T> findById(ID id) and T getOne(ID id).

Two distinct methods that rely on two distinct JPA EntityManager retrieval methods

1) The Optional<T> findById(ID id) javadoc states that it :

Retrieves an entity by its id.

As we look into the implementation, we can see that it relies on EntityManager.find() to do the retrieval :

public Optional<T> findById(ID id) {

    Assert.notNull(id, ID_MUST_NOT_BE_NULL);

    Class<T> domainType = getDomainClass();

    if (metadata == null) {
        return Optional.ofNullable(em.find(domainType, id));
    }

    LockModeType type = metadata.getLockModeType();

    Map<String, Object> hints = getQueryHints().withFetchGraphs(em).asMap();

    return Optional.ofNullable(type == null ? em.find(domainType, id, hints) : em.find(domainType, id, type, hints));
}

And here em.find() is an EntityManager method declared as :

public <T> T find(Class<T> entityClass, Object primaryKey,
                  Map<String, Object> properties);

Its javadoc states :

Find by primary key, using the specified properties

So, retrieving a loaded entity seems expected.

2) While the T getOne(ID id) javadoc states (emphasis is mine) :

Returns a reference to the entity with the given identifier.

In fact, the reference terminology is really board and JPA API doesn't specify any getOne() method.
So the best thing to do to understand what the Spring wrapper does is looking into the implementation :

@Override
public T getOne(ID id) {
    Assert.notNull(id, ID_MUST_NOT_BE_NULL);
    return em.getReference(getDomainClass(), id);
}

Here em.getReference() is an EntityManager method declared as :

public <T> T getReference(Class<T> entityClass,
                              Object primaryKey);

And fortunately, the EntityManager javadoc defined better its intention (emphasis is mine) :

Get an instance, whose state may be lazily fetched. If the requested instance does not exist in the database, the EntityNotFoundException is thrown when the instance state is first accessed. (The persistence provider runtime is permitted to throw the EntityNotFoundException when getReference is called.) The application should not expect that the instance state will be available upon detachment, unless it was accessed by the application while the entity manager was open.

So, invoking getOne() may return a lazily fetched entity.
Here, the lazy fetching doesn't refer to relationships of the entity but the entity itself.

It means that if we invoke getOne() and then the Persistence context is closed, the entity may be never loaded and so the result is really unpredictable.
For example if the proxy object is serialized, you could get a null reference as serialized result or if a method is invoked on the proxy object, an exception such as LazyInitializationException is thrown.
So in this kind of situation, the throw of EntityNotFoundException that is the main reason to use getOne() to handle an instance that does not exist in the database as an error situation may be never performed while the entity is not existing.

In any case, to ensure its loading you have to manipulate the entity while the session is opened. You can do it by invoking any method on the entity.
Or a better alternative use findById(ID id) instead of.

Why a so unclear API ?

To finish, two questions for Spring-Data-JPA developers:

• why not having a clearer documentation for getOne() ? Entity lazy loading is really not a detail.

• why do you need to introduce getOne() to wrap EM.getReference() ?
  Why not simply stick to the wrapped method :getReference() ? This EM method is really very particular while getOne() conveys a so simple processing.

When trying to compile and use class Elsewhere (from Earwicker's answer) I get:

error LNK2001: unresolved external symbol "private: static class StaticStuff Elsewhere::staticStuff" (?staticStuff@Elsewhere@@0VStaticStuff@@A)

It seems is not possible to initialize static attributes of non-integer types without putting some code outside the class definition (CPP).

To make that compile you can use "a static method with a static local variable inside" instead. Something like this:

class Elsewhere
{
public:
    static StaticStuff& GetStaticStuff()
    {
        static StaticStuff staticStuff; // constructor runs once, single instance
        return staticStuff;
    }
};

And you may also pass arguments to the constructor or initialize it with specific values, it is very flexible, powerfull and easy to implement... the only thing is you have a static method containing a static variable, not a static attribute... syntaxis changes a bit, but still useful. Hope this is useful for someone,

Hugo González Castro.

If one assumes he really needs regexp - which is perfectly reasonable in many contexts - the problem is that the specific regexp variety needs to be specified. For example:

egrep '^(100|[1-9]|[1-9][0-9])$'
grep -E '^(100|[1-9]|[1-9][0-9])$'

work fine if the (...|...) alternative syntax is available. In other contexts, they'd be backslashed like \(...\|...\)

this will remove all the special character

 str.replace(/[_\W]+/g, "");

this is really helpful and solve my issue. Please run the below code and ensure it works

var str="hello world !#to&you%*()";_x000D_
console.log(str.replace(/[_\W]+/g, ""));

long is equivalent to long int, just as short is equivalent to short int. A long int is a signed integral type that is at least 32 bits, while a long long or long long int is a signed integral type is at least 64 bits.

This doesn't necessarily mean that a long long is wider than a long. Many platforms / ABIs use the LP64 model - where long (and pointers) are 64 bits wide. Win64 uses the LLP64, where long is still 32 bits, and long long (and pointers) are 64 bits wide.

There's a good summary of 64-bit data models here.

long double doesn't guarantee much other than it will be at least as wide as a double.

You could maybe add a method to your Production object called 'SetPowerRating(int)' which sets a property in Production, and call this in your Meter object before using the property in the Production object?

Use String.Format:

string title1 = "Sample Title One";
string element1 = "Element One";
string format = "{0,-20} {1,-10}";

string result = string.Format(format, title1, element1);
//or you can print to Console directly with
//Console.WriteLine(format, title1, element1);

In the format {0,-20} means the first argument has a fixed length 20, and the negative sign guarantees the string is printed from left to right.

In Xcode 8.0 you can simply do it by changing insets in size inspector.

Select the UIButton -> Attributes Inspector -> go to size inspector and modify the content, image and title insets.

And if you want to change image on right side you can simply change the semantic property to Force Right-to-left in Attribute inspector .

g.next() has been renamed to g.__next__(). The reason for this is consistency: special methods like __init__() and __del__() all have double underscores (or "dunder" in the current vernacular), and .next() was one of the few exceptions to that rule. This was fixed in Python 3.0. [*]

But instead of calling g.__next__(), use next(g).

[*] There are other special attributes that have gotten this fix; func_name, is now __name__, etc.

In large 24/7 or 24/6 systems -- systems that react to messages, RPC requests or that poll a database or process continuously -- it is useful to have a way to identify memory leaks. For this, I tend to add a mechanism to the application to temporarily suspend any processing and then perform full garbage collection. This puts the system into a quiescent state where the memory remaining is either legitimately long lived memory (caches, configuration, &c.) or else is 'leaked' (objects that are not expected or desired to be rooted but actually are).

Having this mechanism makes it a lot easier to profile memory usage as the reports will not be clouded with noise from active processing.

To be sure you get all of the garbage, you need to perform two collections:

GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();

As the first collection will cause any objects with finalizers to be finalized (but not actually garbage collect these objects). The second GC will garbage collect these finalized objects.

Well, there's a much easier way of doing this. When you grab embed link for youtube video, scroll down a bit and you will see some options: iFrame Embed, Use old embed, related videos etc. There, select Use old embed link. This solves the issue.

The best way is to use Array#to_h:

[ [:apple,1],[:banana,2] ].to_h  #=> {apple: 1, banana: 2}

Note that to_h also accepts a block:

[:apple, :banana].to_h { |fruit| [fruit, "I like #{fruit}s"] } 
  # => {apple: "I like apples", banana: "I like bananas"}

Note: to_h accepts a block in Ruby 2.6.0+; for early rubies you can use my backports gem and require 'backports/2.6.0/enumerable/to_h'

to_h without a block was introduced in Ruby 2.1.0.

Before Ruby 2.1, one could use the less legible Hash[]:

array = [ [:apple,1],[:banana,2] ]
Hash[ array ]  #= > {:apple => 1, :banana => 2}

Finally, be wary of any solutions using flatten, this could create problems with values that are arrays themselves.

This should work ..

$('#buttonID').click(function(){ window.location = 'new url'});

For developers using the Fetch API in a Node.js app, this is how I got this to work using rejectUnauthorized.

Keep in mind that using rejectUnauthorized is dangerous as it opens you up to potential security risks, as it circumvents a problematic certificate.

const fetch = require("node-fetch");
const https = require('https');

const httpsAgent = new https.Agent({
  rejectUnauthorized: false,
});

async function getData() {
  const resp = await fetch(
    "https://myexampleapi.com/endpoint",
    {
      agent: httpsAgent,
    },
  )
  const data = await resp.json()
  return data
}

With dataclasses, a feature added in Python 3.7, there is now yet another (quite convenient) way to achieve setting default values on class instances. The decorator dataclass will automatically generate a few methods on your class, such as the constructor. As the documentation linked above notes, "[t]he member variables to use in these generated methods are defined using PEP 526 type annotations".

Considering OP's example, we could implement it like this:

from dataclasses import dataclass

@dataclass
class Foo:
    num: int = 0

When constructing an object of this class's type we could optionally overwrite the value.

print('Default val: {}'.format(Foo()))
# Default val: Foo(num=0)
print('Custom val: {}'.format(Foo(num=5)))
# Custom val: Foo(num=5)

Simply invoke orderBy() as many times as you need it. For instance:

User::orderBy('name', 'DESC')
    ->orderBy('email', 'ASC')
    ->get();

Produces the following query:

SELECT * FROM `users` ORDER BY `name` DESC, `email` ASC

If there are no performance gains using a join, then I prefer Common Table Expressions (CTEs) for readability:

WITH subquery AS (
    SELECT address_id, customer, address, partn
    FROM  /* big hairy SQL */ ...
)
UPDATE dummy
SET customer = subquery.customer,
    address  = subquery.address,
    partn    = subquery.partn
FROM subquery
WHERE dummy.address_id = subquery.address_id;

IMHO a bit more modern.

You can also add a tap gesture recognizer to resign the keyboard. :D

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.

    let recognizer = UITapGestureRecognizer(target: self, action: Selector("handleTap:"))
    backgroundView.addGestureRecognizer(recognizer)
}
    func handleTap(recognizer: UITapGestureRecognizer) {
    textField.resignFirstResponder()
    textFieldtwo.resignFirstResponder()
    textFieldthree.resignFirstResponder()

    println("tappped")
}

1. First Method

you have to assign null or empty string here

this.searchValue = null;
//or
this.searchValue = ' ';

Working Plunker

because no event is being fired from angular change detection. so you have to assign some value either null or string with space

2. Second Method

• use of [(ngModel)] it should work with ngModel.

why ?

because as you did binding with value attribute which is only property binding not event binding. so angular doesn't run change detection because no event relevant to Angular is fired. If you bind to an event then Angular runs change detection and the binding works and value should be changes.

see working example of same with ngModel

Working Example with ngModel

You can always escape the reserved keyword if you still want to make your query work!!

Just replace end with `end`

Here is the list of reserved keywords https://cwiki.apache.org/confluence/display/Hive/LanguageManual+DDL

CREATE EXTERNAL TABLE moveProjects (cid string, `end` string, category string)
STORED BY 'org.apache.hadoop.hive.dynamodb.DynamoDBStorageHandler'
TBLPROPERTIES ("dynamodb.table.name" = "Projects",
    "dynamodb.column.mapping" = "cid:cid,end:end,category:category");

Try this:

String hourMinute = DateTime.Now.ToString("HH:mm");

Now you will get the time in hour:minute format.

try this:

In [110]: (df.groupby('Company Name')
   .....:    .agg({'Organisation Name':'count', 'Amount': 'sum'})
   .....:    .reset_index()
   .....:    .rename(columns={'Organisation Name':'Organisation Count'})
   .....: )
Out[110]:
          Company Name   Amount  Organisation Count
0  Vifor Pharma UK Ltd  4207.93                   5

or if you don't want to reset index:

df.groupby('Company Name')['Amount'].agg(['sum','count'])

or

df.groupby('Company Name').agg({'Amount': ['sum','count']})

Demo:

In [98]: df.groupby('Company Name')['Amount'].agg(['sum','count'])
Out[98]:
                         sum  count
Company Name
Vifor Pharma UK Ltd  4207.93      5

In [99]: df.groupby('Company Name').agg({'Amount': ['sum','count']})
Out[99]:
                      Amount
                         sum count
Company Name
Vifor Pharma UK Ltd  4207.93     5

The simple answer for this one is that you have an undeclared (null) variable. In this case it is $md5. From the comment you put this needed to be declared elsewhere in your code

$md5 = new-object -TypeName System.Security.Cryptography.MD5CryptoServiceProvider

The error was because you are trying to execute a method that does not exist.

PS C:\Users\Matt> $md5 | gm


   TypeName: System.Security.Cryptography.MD5CryptoServiceProvider

Name                       MemberType Definition                                                                                                                            
----                       ---------- ----------                                                                                                                            
Clear                      Method     void Clear()                                                                                                                          
ComputeHash                Method     byte[] ComputeHash(System.IO.Stream inputStream), byte[] ComputeHash(byte[] buffer), byte[] ComputeHash(byte[] buffer, int offset, ...

The .ComputeHash() of $md5.ComputeHash() was the null valued expression. Typing in gibberish would create the same effect.

PS C:\Users\Matt> $bagel.MakeMeABagel()
You cannot call a method on a null-valued expression.
At line:1 char:1
+ $bagel.MakeMeABagel()
+ ~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (:) [], RuntimeException
    + FullyQualifiedErrorId : InvokeMethodOnNull

PowerShell by default allows this to happen as defined its StrictMode

When Set-StrictMode is off, uninitialized variables (Version 1) are assumed to have a value of 0 (zero) or $Null, depending on type. References to non-existent properties return $Null, and the results of function syntax that is not valid vary with the error. Unnamed variables are not permitted.

I know this is old, but I have to add this in here..

And while this is not a full answer, it is an 'IN ADDITION TO'

The address bar will not disappear if you're NOT using https.

ALSO

If you are using https and the address bar still won't hide, you might have some https errors in your webpage (such as certain images being served from a non-https location.)

Hope this helps..

you can use the package manager to query installed version of gitlab-ce. if it happens to be debian or ubuntu, like this:

dpkg -l | grep gitlab-ce | tr -s [:space:] | cut -d" " -f3

should work similarly with other distributions, assuming you used package manager to install.

usermod -m -d /newhome username

Here's a variant on mkh's answer that runs much faster than it, and scipy.stats.pearsonr, using numba.

import numba

@numba.jit
def corr(data1, data2):
    M = data1.size

    sum1 = 0.
    sum2 = 0.
    for i in range(M):
        sum1 += data1[i]
        sum2 += data2[i]
    mean1 = sum1 / M
    mean2 = sum2 / M

    var_sum1 = 0.
    var_sum2 = 0.
    cross_sum = 0.
    for i in range(M):
        var_sum1 += (data1[i] - mean1) ** 2
        var_sum2 += (data2[i] - mean2) ** 2
        cross_sum += (data1[i] * data2[i])

    std1 = (var_sum1 / M) ** .5
    std2 = (var_sum2 / M) ** .5
    cross_mean = cross_sum / M

    return (cross_mean - mean1 * mean2) / (std1 * std2)

for ST3

$language = "language u wish"

if exists,

go to ~/.config/sublime-text-3/Packages/User/$language.sublime-settings

else

create ~/.config/sublime-text-3/Packages/User/$language.sublime-settings

and set

{ "extensions": [ "yourextension" ] }

This way allows you to enable syntax for composite extensions (e.g. sql.mustache, js.php, etc ... )

Firebase provides some good features like real time change reflection , easy integration of authentication mechanism , and lots of other built-in features for rapid web development. Firebase, really makes Web development so simple that never exists. Firebase database is a fork of MongoDB.

What's the advantage of using Firebase over MongoDB?

You can take advantage of all built-in features of Firebase over MongoDB.

Reason for this is explained in the Inheritance article of the Java Platform which says:

"A subclass inherits all the members (fields, methods, and nested classes) from its superclass. Constructors are not members, so they are not inherited by subclasses, but the constructor of the superclass can be invoked from the subclass."

In addition to the native versions, but you may want to try BitNami MAMP Stacks (disclaimer, I am one of the developers). They are completely free, all-in-one bundles of Apache, MySQL, PHP and a several other third-party libraries and utilities that are useful when developing locally. In particular, they are completely self-contained so you can have several one installed at the same time, with different versions of Apache and MySQL and they will not interfere with each other. You can get them from http://bitnami.org/stack/mampstack or directly from the Mac OS X app store https://itunes.apple.com/app/mamp-stack/id571310406

This is all i can find out. Not sure if it helps, but thought I'd add it to the mix.

WORD-WRAP

This property specifies whether the current rendered line should break if the content exceeds the boundary of the specified rendering box for an element (this is similar in some ways to the ‘clip’ and ‘overflow’ properties in intent.) This property should only apply if the element has a visual rendering, is an inline element with explicit height/width, is absolutely positioned and/or is a block element.

WORD-BREAK

This property controls the line breaking behavior within words. It is especially useful in cases where multiple languages are used within an element.

In your src/main/resources put an application.properties or application.yml and put a server.contextPath in there.

server.contextPath=/your/context/here

When starting your application the application will be available at http://localhost:8080/your/context/here.

For a comprehensive list of properties to set see Appendix A. of the Spring Boot reference guide.

Instead of putting it in the application.properties you can also pass it as a system property when starting your application

java -jar yourapp.jar -Dserver.contextPath=/your/path/here

You could use the validation plugin for jQuery: http://docs.jquery.com/Plugins/Validation

It happens to have an accept() rule that does exactly what you need: http://docs.jquery.com/Plugins/Validation/Methods/accept#extension

Note that controlling file extension is not bullet proof since it is in no way related to the mimetype of the file. So you could have a .png that's a word document and a .doc that's a perfectly valid png image. So don't forget to make more controls server-side ;)

Gradle looks for gradle.properties files in these places:

• in project build dir (that is where your build script is)
• in sub-project dir
• in gradle user home (defined by the GRADLE_USER_HOME environment variable, which if not set defaults to USER_HOME/.gradle)

Properties from one file will override the properties from the previous ones (so file in gradle user home has precedence over the others, and file in sub-project has precedence over the one in project root).

Reference: https://gradle.org/docs/current/userguide/build_environment.html

select convert(varchar(10), fmdate, 101) from sery

101 is a style argument.

Rest of 'em can be found here.

T-SQL Cast / Convert date to string

Version 3 of the YouTube Data API has concrete quota numbers listed in the Google API Console where you register for your API Key. You can use 10,000 units per day. Projects that had enabled the YouTube Data API before April 20, 2016, have a default quota of 50M/day.

You can read about what a unit is here: https://developers.google.com/youtube/v3/getting-started#quota

• A simple read operation that only retrieves the ID of each returned resource has a cost of approximately 1 unit.
• A write operation has a cost of approximately 50 units.
• A video upload has a cost of approximately 1600 units.

If you hit the limits, Google will stop returning results until your quota is reset. You can apply for more than 1M requests per day, but you will have to pay for those extra requests.

Also, you can read about why Google has deferred support to StackOverflow on their YouTube blog here: https://youtube-eng.googleblog.com/2012/09/the-youtube-api-on-stack-overflow_14.html

There are a number of active members on the YouTube Developer Relations team here including Jeff Posnick, Jarek Wilkiewicz, and Ibrahim Ulukaya who all have knowledge of Youtube internals...

UPDATE: Increased the quota numbers to reflect current limits on December 10, 2013.

UPDATE: Decreased the quota numbers from 50M to 1M per day to reflect current limits on May 13, 2016.

UPDATE: Decreased the quota numbers from 1M to 10K per day as of January 11, 2019.

In addition to ways already mentioned.. can use 'viewitems', 'viewkeys', 'viewvalues'

>>> d = {320: 1, 321: 0, 322: 3}
>>> list(d.viewitems())
[(320, 1), (321, 0), (322, 3)]
>>> list(d.viewkeys())
[320, 321, 322]
>>> list(d.viewvalues())
[1, 0, 3]

Or

>>> list(d.iteritems())
[(320, 1), (321, 0), (322, 3)]
>>> list(d.iterkeys())
[320, 321, 322]
>>> list(d.itervalues())
[1, 0, 3]

or using itemgetter

>>> from operator import itemgetter
>>> map(itemgetter(0), dd.items())     ####  for keys
['323', '332']
>>> map(itemgetter(1), dd.items())     ####  for values
['3323', 232]

>>> response='bababa'
...  if "K" in response.text:
...     raise ValueError("Not found")

Create a dictionary, then iterate over the result and stuff the rows in the dictionary. Note that if you encounter a row with a duplicate date, you will have to decide what to do (raise an exception, replace the previous row, discard the later row, etc...)

Here's test.csv:

Date,Foo,Bar
123,456,789
abc,def,ghi

and the corresponding program:

import csv
reader = csv.reader(open('test.csv'))

result = {}
for row in reader:
    key = row[0]
    if key in result:
        # implement your duplicate row handling here
        pass
    result[key] = row[1:]
print(result)

yields:

{'Date': ['Foo', 'Bar'], '123': ['456', '789'], 'abc': ['def', 'ghi']}

or, with DictReader:

import csv
reader = csv.DictReader(open('test.csv'))

result = {}
for row in reader:
    key = row.pop('Date')
    if key in result:
        # implement your duplicate row handling here
        pass
    result[key] = row
print(result)

results in:

{'123': {'Foo': '456', 'Bar': '789'}, 'abc': {'Foo': 'def', 'Bar': 'ghi'}}

Or perhaps you want to map the column headings to a list of values for that column:

import csv
reader = csv.DictReader(open('test.csv'))

result = {}
for row in reader:
    for column, value in row.items():  # consider .iteritems() for Python 2
        result.setdefault(column, []).append(value)
print(result)

That yields:

{'Date': ['123', 'abc'], 'Foo': ['456', 'def'], 'Bar': ['789', 'ghi']}

ui-router v1.0.18 introduces support for ng-disabled on anchor tags

Example: <a ui-sref="go" ng-disabled="true">nogo</a>

• https://github.com/angular-ui/ui-router/issues/2957

• https://github.com/angular-ui/ui-router/pull/3692/commits/a59fcae300f9d8f73a5b91fa77c92b926e68281d

use this function:

    public static string ConvertDataTableToHTML(DataTable dt)
    {
        string html = "<table>";
        //add header row
        html += "<tr>";
        for(int i=0;i<dt.Columns.Count;i++)
            html+="<td>"+dt.Columns[i].ColumnName+"</td>";
        html += "</tr>";
        //add rows
        for (int i = 0; i < dt.Rows.Count; i++)
        {
            html += "<tr>";
            for (int j = 0; j< dt.Columns.Count; j++)
                html += "<td>" + dt.Rows[i][j].ToString() + "</td>";
            html += "</tr>";
        }
        html += "</table>";
        return html;
    }

Escape the quotes with backslashes:

printf("She said \"time flies like an arrow, but fruit flies like a banana\"."); 

There are special escape characters that you can use in string literals, and these are denoted with a leading backslash.

A better solution is not to make your page dependable on zoom settings. If you set limits like the one you are proposing, you are limiting accessibility. If someone cannot read your text well, they just won't be able to change that. I would use proper CSS to make it look nice in any zoom.

If your really insist, take a look at this question on how to detect zoom level using JavaScript (nightmare!): How to detect page zoom level in all modern browsers?

to check if a date is today's date or not only check for dates not time included with that so make time 00:00:00 and use the code below

    Calendar c = Calendar.getInstance();

    // set the calendar to start of today
    c.set(Calendar.HOUR_OF_DAY, 0);
    c.set(Calendar.MINUTE, 0);
    c.set(Calendar.SECOND, 0);
    c.set(Calendar.MILLISECOND, 0);

    Date today = c.getTime();

    // or as a timestamp in milliseconds
    long todayInMillis = c.getTimeInMillis();


    int dayOfMonth = 24;
    int month = 4;
    int year =2013;

    // reuse the calendar to set user specified date
    c.set(Calendar.YEAR, year);
    c.set(Calendar.MONTH, month - 1);
    c.set(Calendar.DAY_OF_MONTH, dayOfMonth);
    c.set(Calendar.HOUR_OF_DAY, 0);
    c.set(Calendar.MINUTE, 0);
    c.set(Calendar.SECOND, 0);
    c.set(Calendar.MILLISECOND, 0);
    // and get that as a Date
    Date dateSpecified = c.getTime();

    // test your condition
    if (dateSpecified.before(today)) {

        Log.v(" date is previou")
    } else if (dateSpecified.equal(today)) {

        Log.v(" date is today ")
    } 
             else if (dateSpecified.after(today)) {

        Log.v(" date is future date ")
    } 

Hope it will help....

Hello All Please Use this it's working fine... for auto mapper use multiple .ForMember in C#

        if (promotionCode.Any())
        {
            Mapper.Reset();
            Mapper.CreateMap<PromotionCode, PromotionCodeEntity>().ForMember(d => d.serverTime, o => o.MapFrom(s => s.promotionCodeId == null ? "date" : String.Format("{0:dd/MM/yyyy h:mm:ss tt}", DateTime.UtcNow.AddHours(7.0))))
                .ForMember(d => d.day, p => p.MapFrom(s => s.code != "" ? LeftTime(Convert.ToInt32(s.quantity), Convert.ToString(s.expiryDate), Convert.ToString(DateTime.UtcNow.AddHours(7.0))) : "Day"))
                .ForMember(d => d.subCategoryname, o => o.MapFrom(s => s.subCategoryId == 0 ? "" : Convert.ToString(subCategory.Where(z => z.subCategoryId.Equals(s.subCategoryId)).FirstOrDefault().subCategoryName)))
                .ForMember(d => d.optionalCategoryName, o => o.MapFrom(s => s.optCategoryId == 0 ? "" : Convert.ToString(optionalCategory.Where(z => z.optCategoryId.Equals(s.optCategoryId)).FirstOrDefault().optCategoryName)))
                .ForMember(d => d.logoImg, o => o.MapFrom(s => s.vendorId == 0 ? "" : Convert.ToString(vendorImg.Where(z => z.vendorId.Equals(s.vendorId)).FirstOrDefault().logoImg)))
                .ForMember(d => d.expiryDate, o => o.MapFrom(s => s.expiryDate == null ? "" : String.Format("{0:dd/MM/yyyy h:mm:ss tt}", s.expiryDate))); 
            var userPromotionModel = Mapper.Map<List<PromotionCode>, List<PromotionCodeEntity>>(promotionCode);
            return userPromotionModel;
        }
        return null;

I just have a mistake copy pasting. In one line I had same name that in other model (Ad model):

const Admin = mongoose.model('Ad', adminSchema);

Correct is:

const Admin = mongoose.model('Admin', adminSchema);

By the way, if someone have "auto-save", and use index for queries like:

**adSchema**.index({title:"text", description:"text", phone:"text", reference:"text"})

It has to delete index, and rewrite for correct model:

**adminSchema**.index({title:"text", description:"text", phone:"text", reference:"text"})

I found a very interesting solution:

http://www.swview.org/node/191

Then, I divided the pair public/private key into two files private.key publi.pem and it works!

You can check like this:

int x;
cin >> x;

if (cin.fail()) {
    //Not an int.
}

Furthermore, you can continue to get input until you get an int via:

#include <iostream>



int main() {

    int x;
    std::cin >> x;
    while(std::cin.fail()) {
        std::cout << "Error" << std::endl;
        std::cin.clear();
        std::cin.ignore(256,'\n');
        std::cin >> x;
    }
    std::cout << x << std::endl;

    return 0;
}

EDIT: To address the comment below regarding input like 10abc, one could modify the loop to accept a string as an input. Then check the string for any character not a number and handle that situation accordingly. One needs not clear/ignore the input stream in that situation. Verifying the string is just numbers, convert the string back to an integer. I mean, this was just off the cuff. There might be a better way. This won't work if you're accepting floats/doubles (would have to add '.' in the search string).

#include <iostream>
#include <string>

int main() {

    std::string theInput;
    int inputAsInt;

    std::getline(std::cin, theInput);

    while(std::cin.fail() || std::cin.eof() || theInput.find_first_not_of("0123456789") != std::string::npos) {

        std::cout << "Error" << std::endl;

        if( theInput.find_first_not_of("0123456789") == std::string::npos) {
            std::cin.clear();
            std::cin.ignore(256,'\n');
        }

        std::getline(std::cin, theInput);
    }

    std::string::size_type st;
    inputAsInt = std::stoi(theInput,&st);
    std::cout << inputAsInt << std::endl;
    return 0;
}

If you use git LFS, git count-objects does not count your binaries, but only the pointers to them.

If your LFS files are managed by Artifactorys, you should use the REST API:

• Get the www.jfrog.com API from any search engine
• Look at Get Storage Summary Info

number = parseInt(number);

That should do the trick.

Set server timezone and use NTP sync. Here is one better solution to change server time.

To list timezones

timedatectl list-timezones

To set timezone

sudo timedatectl set-timezone America/New_York

Verify time zone

timedatectl

I prefer using UTC timezone for my servers and databases. Any conversions must be handled on client. We can make used of moment.js on client side.

It will be easy to maintain many instances as well,

For input elements, this answer works for me.

I implemented it on a custom input component in Angular 4, but I think it could be implemented with pure JS.

HTML

<input type="text" [(ngModel)]="value" (ondragenter)="disableEvent($event)" 
(dragover)="disableEvent($event)" (ondrop)="disableEvent($event)"/>

Component definition (JS):

export class CustomInputComponent { 

  //component construction and attribute definitions

  disableEvent(event) {
    event.preventDefault();
    return false;
  }
}

While AngularJS allows you to get a hand on a click event (and thus a target of it) with the following syntax (note the $event argument to the setMaster function; documentation here: http://docs.angularjs.org/api/ng.directive:ngClick):

function AdminController($scope) {    
  $scope.setMaster = function(obj, $event){
    console.log($event.target);
  }
}

this is not very angular-way of solving this problem. With AngularJS the focus is on the model manipulation. One would mutate a model and let AngularJS figure out rendering.

The AngularJS-way of solving this problem (without using jQuery and without the need to pass the $event argument) would be:

<div ng-controller="AdminController">
    <ul class="list-holder">
        <li ng-repeat="section in sections" ng-class="{active : isSelected(section)}">
            <a ng-click="setMaster(section)">{{section.name}}</a>
        </li>
    </ul>
    <hr>
    {{selected | json}}
</div>

where methods in the controller would look like this:

$scope.setMaster = function(section) {
    $scope.selected = section;
}

$scope.isSelected = function(section) {
    return $scope.selected === section;
}

Here is the complete jsFiddle: http://jsfiddle.net/pkozlowski_opensource/WXJ3p/15/

The App-Secret key should be kept private - but when releasing the app they can be reversed by some guys.

for those guys it will not hide, lock the either the ProGuard the code. It is a refactor and some payed obfuscators are inserting a few bitwise operators to get back the jk433g34hg3 String. You can make 5 -15 min longer the hacking if you work 3 days :)

Best way is to keep it as it is, imho.

Even if you store at server side( your PC ) the key can be hacked and printed out. Maybe this takes the longest? Anyhow it is a matter of few minutes or a few hours in best case.

A normal user will not decompile your code.

@Autowired to autowire(or search) by-type
@Qualifier to autowire(or search) by-name
Other alternate option for @Qualifier is @Primary

@Component
@Qualifier("beanname")
public class A{}

public class B{

//Constructor
@Autowired  
public B(@Qualifier("beanname")A a){...} //  you need to add @autowire also 

//property
@Autowired
@Qualifier("beanname")
private A a;

}

//If you don't want to add the two annotations, we can use @Resource
public class B{

//property
@Resource(name="beanname")
private A a;

//Importing properties is very similar
@Value("${property.name}")  //@Value know how to interpret ${}
private String name;
}

more about @value

there's no timeout support in the fetch API yet. But it could be achieved by wrapping it in a promise.

for eg.

  function fetchWrapper(url, options, timeout) {
    return new Promise((resolve, reject) => {
      fetch(url, options).then(resolve, reject);

      if (timeout) {
        const e = new Error("Connection timed out");
        setTimeout(reject, timeout, e);
      }
    });
  }

Building on the previous answers (pun intended), an excellent real-world example is Groovy's built in support for Builders.

• Creating XML using Groovy's MarkupBuilder
• Creating XML using Groovy's StreamingMarkupBuilder
• Swing Builder
• SwingXBuilder

See Builders in the Groovy Documentation

Find spring-boot-starter-test in your pom.xml and modify it as follows:

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <exclusions>
            <exclusion>
                <artifactId>commons-logging</artifactId>
                <groupId>commons-logging</groupId>
            </exclusion>
        </exclusions>
        <scope>test</scope>
    </dependency>

It fixed error like:

_Caused by: java.lang.IllegalArgumentException:_ **LoggerFactory** is not a **Logback LoggerContext** but *Logback* is on the classpath.

Either remove **Logback** or the competing implementation

(_class org.apache.logging.slf4j.Log4jLoggerFactory_
loaded from file: 

**${M2_HOME}/repository/org/apache/logging/log4j/log4j-slf4j-impl/2.6.2/log4j-slf4j-impl-2.6.2.jar**).

If you are using WebLogic you will need to add **'org.slf4j'** to prefer-application-packages in WEB-INF/weblogic.xml: **org.apache.logging.slf4j.Log4jLoggerFactory**

Counting rows in big tables is known to be slow in PostgreSQL. To get a precise number it has to do a full count of rows due to the nature of MVCC. There is a way to speed this up dramatically if the count does not have to be exact like it seems to be in your case.

Instead of getting the exact count (slow with big tables):

SELECT count(*) AS exact_count FROM myschema.mytable;

You get a close estimate like this (extremely fast):

SELECT reltuples::bigint AS estimate FROM pg_class where relname='mytable';

How close the estimate is depends on whether you run ANALYZE enough. It is usually very close.
See the PostgreSQL Wiki FAQ.
Or the dedicated wiki page for count(*) performance.

Better yet

The article in the PostgreSQL Wiki is was a bit sloppy. It ignored the possibility that there can be multiple tables of the same name in one database - in different schemas. To account for that:

SELECT c.reltuples::bigint AS estimate
FROM   pg_class c
JOIN   pg_namespace n ON n.oid = c.relnamespace
WHERE  c.relname = 'mytable'
AND    n.nspname = 'myschema'

Or better still

SELECT reltuples::bigint AS estimate
FROM   pg_class
WHERE  oid = 'myschema.mytable'::regclass;

Faster, simpler, safer, more elegant. See the manual on Object Identifier Types.

Use to_regclass('myschema.mytable') in Postgres 9.4+ to avoid exceptions for invalid table names:

• How to check if a table exists in a given schema

TABLESAMPLE SYSTEM (n) in Postgres 9.5+

SELECT 100 * count(*) AS estimate FROM mytable TABLESAMPLE SYSTEM (1);

Like @a_horse commented, the newly added clause for the SELECT command might be useful if statistics in pg_class are not current enough for some reason. For example:

• No autovacuum running.
• Immediately after a big INSERT or DELETE.
• TEMPORARY tables (which are not covered by autovacuum).

This only looks at a random n % (1 in the example) selection of blocks and counts rows in it. A bigger sample increases the cost and reduces the error, your pick. Accuracy depends on more factors:

• Distribution of row size. If a given block happens to hold wider than usual rows, the count is lower than usual etc.
• Dead tuples or a FILLFACTOR occupy space per block. If unevenly distributed across the table, the estimate may be off.
• General rounding errors.

In most cases the estimate from pg_class will be faster and more accurate.

Answer to actual question

First, I need to know the number of rows in that table, if the total count is greater than some predefined constant,

And whether it ...

... is possible at the moment the count pass my constant value, it will stop the counting (and not wait to finish the counting to inform the row count is greater).

Yes. You can use a subquery with LIMIT:

SELECT count(*) FROM (SELECT 1 FROM token LIMIT 500000) t;

Postgres actually stops counting beyond the given limit, you get an exact and current count for up to n rows (500000 in the example), and n otherwise. Not nearly as fast as the estimate in pg_class, though.

As it answers my original question, I have accepted doc_180's answer, but if someone runs into this problem again, I will answer the 2nd half of my question as well:

The NullPointerError I described had nothing to do with the List itself, but with its content!

The "MyClass" class didn't have a "no args" constructor, and neither had its superclass one. Once I added a simple "MyClass()" constructor to MyClass and its superclass, everything worked fine, including the List serialization and deserialization as suggested by doc_180.

To open the Eye Dropper simply:

1. Open DevTools F12
2. Go to Elements tab
3. Under Styles side bar click on any color preview box

Its main functionality is to inspect pixel color values by clicking them though with its new features you can also see your page's existing colors palette or material design palette by clicking on the two arrows icon at the bottom. It can get quite handy when designing your page.

Try this:

SELECT RawXML.value('(/GrobXmlFile//Grob//ReportHeader//OrganizationReportReferenceIdentifier/node())[1]','varchar(50)') AS ReportIdentifierNumber,
       RawXML.value('(/GrobXmlFile//Grob//ReportHeader//OrganizationNumber/node())[1]','int') AS OrginazationNumber
FROM Batches

Use the Font-property on the gridview. See MSDN for details and samples:

http://msdn.microsoft.com/en-us/library/system.windows.forms.datagridview.font.aspx

su - root

Goto /etc/ssh/sshd_config

vi sshd_config

Authentication:

PermitRootLogin yes

To enable empty passwords, change to yes (NOT RECOMMENDED)

PermitEmptyPasswords no

Change to no to disable tunnelled clear text passwords

PasswordAuthentication yes

:x!

Then restart ssh service

root@cloudera2:/etc/ssh# service ssh restart
ssh stop/waiting
ssh start/running, process 10978

Now goto sudoers files (/etc/sudoers).

User privilege specification

root  ALL=(ALL)NOPASSWD:ALL
yourinstanceuser  ALL=(ALL)NOPASSWD:ALL    / This is the user by which you are launching instance.

tl;dr

ZonedDateTime.now(                    // Capture current moment as seen in the wall-clock time used by the people of a particular region (a time zone).
    ZoneId.of( "America/Montreal" )   // Specify desired/expected time zone. Or pass `ZoneId.systemDefault` for the JVM’s current default time zone.
)                                     // Returns a `ZonedDateTime` object.
.getMinute()                          // Extract the minute of the hour of the time-of-day from the `ZonedDateTime` object.

42

ZonedDateTime

To capture the current moment as seen in the wall-clock time used by the people of a particular region (a time zone), use ZonedDateTime.

A time zone is crucial in determining a date. For any given moment, the date varies around the globe by zone. For example, a few minutes after midnight in Paris France is a new day while still “yesterday” in Montréal Québec.

If no time zone is specified, the JVM implicitly applies its current default time zone. That default may change at any moment during runtime(!), so your results may vary. Better to specify your desired/expected time zone explicitly as an argument.

Specify a proper time zone name in the format of continent/region, such as America/Montreal, Africa/Casablanca, or Pacific/Auckland. Never use the 3-4 letter abbreviation such as EST or IST as they are not true time zones, not standardized, and not even unique(!).

ZoneId z = ZoneId.of( "America/Montreal" ) ;
ZonedDateTime zdt = ZonedDateTime.now( z ) ;

Call any of the many getters to pull out pieces of the date-time.

int    year        = zdt.getYear() ;
int    monthNumber = zdt.getMonthValue() ;
String monthName   = zdt.getMonth().getDisplayName( TextStyle.FULL , Locale.JAPAN ) ;  // Locale determines human language and cultural norms used in localizing. Note that `Locale` has *nothing* to do with time zone.
int    dayOfMonth  = zdt.getDayOfMonth() ;
String dayOfWeek   = zdt.getDayOfWeek().getDisplayName( TextStyle.FULL , Locale.CANADA_FRENCH ) ; 
int    hour        = zdt.getHour() ;  // Extract the hour from the time-of-day.
int    minute      = zdt.getMinute() ;
int    second      = zdt.getSecond() ;
int    nano        = zdt.getNano() ;

The java.time classes resolve to nanoseconds. Your Question asked for the fraction of a second in milliseconds. Obviously, you can divide by a million to truncate nanoseconds to milliseconds, at the cost of possible data loss. Or use the TimeUnit enum for such conversion.

long millis = TimeUnit.NANOSECONDS.toMillis( zdt.getNano() ) ;

DateTimeFormatter

To produce a String to combine pieces of text, use DateTimeFormatter class. Search Stack Overflow for more info on this.

Instant

Usually best to track moments in UTC. To adjust from a zoned date-time to UTC, extract a Instant.

Instant instant = zdt.toInstant() ;

And go back again.

ZonedDateTime zdt = instant.atZone( ZoneId.of( "Africa/Tunis" ) ) ;

LocalDateTime

A couple of other Answers use the LocalDateTime class. That class in not appropriate to the purpose of tracking actual moments, specific moments on the timeline, as it intentionally lacks any concept of time zone or offset-from-UTC.

So what is LocalDateTime good for? Use LocalDateTime when you intend to apply a date & time to any locality or all localities, rather than one specific locality.

For example, Christmas this year starts at the LocalDateTime.parse( "2018-12-25T00:00:00" ). That value has no meaning until you apply a time zone (a ZoneId) to get a ZonedDateTime. Christmas happens first in Kiribati, then later in New Zealand and far east Asia. Hours later Christmas starts in India. More hour later in Africa & Europe. And still not Xmas in the Americas until several hours later. Christmas starting in any one place should be represented with ZonedDateTime. Christmas everywhere is represented with a LocalDateTime.

About java.time

The java.time framework is built into Java 8 and later. These classes supplant the troublesome old legacy date-time classes such as java.util.Date, Calendar, & SimpleDateFormat.

The Joda-Time project, now in maintenance mode, advises migration to the java.time classes.

To learn more, see the Oracle Tutorial. And search Stack Overflow for many examples and explanations. Specification is JSR 310.

You may exchange java.time objects directly with your database. Use a JDBC driver compliant with JDBC 4.2 or later. No need for strings, no need for java.sql.* classes.

Where to obtain the java.time classes?

• Java SE 8, Java SE 9, Java SE 10, and later
  • Built-in.
  • Part of the standard Java API with a bundled implementation.
  • Java 9 adds some minor features and fixes.
• Java SE 6 and Java SE 7
  • Much of the java.time functionality is back-ported to Java 6 & 7 in ThreeTen-Backport.
• Android
  • Later versions of Android bundle implementations of the java.time classes.
  • For earlier Android (<26), the ThreeTenABP project adapts ThreeTen-Backport (mentioned above). See How to use ThreeTenABP….

Try this. While this still uses eval, it only uses it to summon the function from the current context. Then, you have the real function to use as you wish.

The main benefit for me from this is that you will get any eval-related errors at the point of summoning the function. Then you will get only the function-related errors when you call.

def say_hello(name):
    print 'Hello {}!'.format(name)

# get the function by name
method_name = 'say_hello'
method = eval(method_name)

# call it like a regular function later
args = ['friend']
kwargs = {}
method(*args, **kwargs)

I use this:

import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.io.InputStream;

public class IconImageUtilities
{
    public static void setIconImage(Window window)
    {
        try
        {
            InputStream imageInputStream = window.getClass().getResourceAsStream("/Icon.png");
            BufferedImage bufferedImage = ImageIO.read(imageInputStream);
            window.setIconImage(bufferedImage);
        } catch (IOException exception)
        {
            exception.printStackTrace();
        }
    }
}

Just place your image called Icon.png in the resources folder and call the above method with itself as parameter inside a class extending a class from the Window family such as JFrame or JDialog:

IconImageUtilities.setIconImage(this);

spark.sql("select * from df").coalesce(1).write.option("mode","append").option("header","true").csv("/your/hdfs/path/")

spark.sql("select * from df") --> this is dataframe

coalesce(1) or repartition(1) --> this will make your output file to 1 part file only

write --> writing data

option("mode","append") --> appending data to existing directory

option("header","true") --> enabling header

csv("") --> write as CSV file & its output location in HDFS

I have done some testing and using CSS3 to redefine the scrollbars works and you get to keep your Overflow:scroll; or Overflow:auto

I ended up with something like this...

::-webkit-scrollbar {
    width: 15px;
    height: 15px;
    border-bottom: 1px solid #eee; 
    border-top: 1px solid #eee;
}
::-webkit-scrollbar-thumb {
    border-radius: 8px;
    background-color: #C3C3C3;
    border: 2px solid #eee;
}

::-webkit-scrollbar-track {
    -webkit-box-shadow: inset 0 0 6px rgba(0,0,0,0.2); 
} 

The only down side which I have not yet been able to figure out is how to interact with the scrollbars on iProducts but you can interact with the content to scroll it

Hibernate Criteria API (not plain SQL though, but very powerful and in active development):

List sales = session.createCriteria(Sale.class)
         .add(Expression.ge("date",startDate);
         .add(Expression.le("date",endDate);
         .addOrder( Order.asc("date") )
         .setFirstResult(0)
         .setMaxResults(10)
         .list();

I expanded one of the answers, however my functionality is a bit different. In my version, different rows form different groups. And "header" row triggers collapsing/expanding of that particular group. Also, each individual subgroup memorizes state that its in. It might sound a bit confusing, you can test drive my version using jsfiddle. Hope this code snippets will be helpful to someone out there!

HTML

<table border="0">
  <tr>
      <th>Header 1</th>
      <th>Header 2</th>
  </tr>
  <tr>
    <td class='group1'>Group 1</td>
    <td>data 2</td>
  </tr>
  <tr class='group1'>
    <td>data 3</td>
    <td>data 4</td>
  </tr>
  <tr>
    <td class='group2'>Group 2</td>
    <td>data 2</td>
  </tr>
  <tr class='group2'>
    <td>data 3</td>
    <td>data 4</td>
  </tr>
  <tr class='group2'>
    <td class='sub_group1'>Sub Group 1</td>
    <td>data 6</td>
  </tr>
  <tr class='group2 sub_group1'>
    <td>data 7</td>
    <td>data 8</td>
  </tr>
  <tr class='group2 sub_group1'>
    <td>data 9</td>
    <td>data 10</td>
  </tr>
  <tr class='group2 sub_group1'>
    <td class='sub_sub_group1'>Sub Sub Group 1</td>
    <td>data 11</td>
  </tr>
  <tr class='group2 sub_group1 sub_sub_group1'>
    <td>data 12</td>
    <td>data 13</td>
  </tr>
  <tr class='group2 sub_group1 sub_sub_group1'>
    <td>data 14</td>
    <td>data 15</td>
  </tr>
  <tr class='group2'>
    <td class='sub_group2'>Sub Group 2</td>
    <td>data 11</td>
  </tr>
  <tr class='group2 sub_group2'>
    <td>data 12</td>
    <td>data 13</td>
  </tr>
  <tr class='group2 sub_group2'>
    <td>data 14</td>
    <td>data 15</td>
  </tr>
</table>

CSS

table, tr, td, th
{
    border: 1px solid black;
    border-collapse:collapse;
}

img.button_open{
  content:url('http://code.stephenmorley.org/javascript/collapsible-lists/button-open.png');
  cursor:pointer;
}

img.button_closed{
  content: url('http://code.stephenmorley.org/javascript/collapsible-lists/button-closed.png');
  cursor:pointer;
}

JS

function CreateGroup(group_name)
{
    // Create Button(Image)
    $('td.' + group_name).prepend("<img class='" + group_name + " button_closed'> ");
    // Add Padding to Data
    $('tr.' + group_name).each(function () {
        var first_td = $(this).children('td').first();
        var padding_left = parseInt($(first_td).css('padding-left'));
        $(first_td).css('padding-left', String(padding_left + 25) + 'px');
    });
    RestoreGroup(group_name);

    // Tie toggle function to the button
    $('img.' + group_name).click(function(){
        ToggleGroup(group_name);
    });
}

function ToggleGroup(group_name)
{
    ToggleButton($('img.' + group_name));
    RestoreGroup(group_name);
}

function RestoreGroup(group_name)
{
    if ($('img.' + group_name).hasClass('button_open'))
    {
        // Open everything
        $('tr.' + group_name).show();

        // Close subgroups that been closed
        $('tr.' + group_name).find('img.button_closed').each(function () {
            sub_group_name = $(this).attr('class').split(/\s+/)[0];
            //console.log(sub_group_name);
            RestoreGroup(sub_group_name);
        });
    }

    if ($('img.' + group_name).hasClass('button_closed'))
    {
        // Close everything
        $('tr.' + group_name).hide();
    }
}

function ToggleButton(button)
{
    $(button).toggleClass('button_open');
    $(button).toggleClass('button_closed');
}

CreateGroup('group1');
CreateGroup('group2');
CreateGroup('sub_group1');
CreateGroup('sub_group2');
CreateGroup('sub_sub_group1');

DEMO

Nothing like these two lines appears in Mike Williams' tutorial:

    wait = true;
    setTimeout("wait = true", 2000);

Here's a Version 3 port:

http://acleach.me.uk/gmaps/v3/plotaddresses.htm

The relevant bit of code is

  // ====== Geocoding ======
  function getAddress(search, next) {
    geo.geocode({address:search}, function (results,status)
      { 
        // If that was successful
        if (status == google.maps.GeocoderStatus.OK) {
          // Lets assume that the first marker is the one we want
          var p = results[0].geometry.location;
          var lat=p.lat();
          var lng=p.lng();
          // Output the data
            var msg = 'address="' + search + '" lat=' +lat+ ' lng=' +lng+ '(delay='+delay+'ms)<br>';
            document.getElementById("messages").innerHTML += msg;
          // Create a marker
          createMarker(search,lat,lng);
        }
        // ====== Decode the error status ======
        else {
          // === if we were sending the requests to fast, try this one again and increase the delay
          if (status == google.maps.GeocoderStatus.OVER_QUERY_LIMIT) {
            nextAddress--;
            delay++;
          } else {
            var reason="Code "+status;
            var msg = 'address="' + search + '" error=' +reason+ '(delay='+delay+'ms)<br>';
            document.getElementById("messages").innerHTML += msg;
          }   
        }
        next();
      }
    );
  }

It seems that in VBA macro code for an ActiveX checkbox control you use

If (ActiveSheet.OLEObjects("CheckBox1").Object.Value = True)

and for a Form checkbox control you use

If (ActiveSheet.Shapes("CheckBox1").OLEFormat.Object.Value = 1)

After you get the mysql-dev issues corrected, you may need to remove the bad mysql2 install. Look carefully at the messages after $ bundle install. You may need to

rm -rf vendor/cache/
rm -rf ./Zentest

This will clear out the bad mysql2 installation so that a final $ bundle install can create a good one.

Firstly you need to change credentials from your local machine

1. remove generic credentials if there is any

2. configure new user and email (you can make it globally if you want)

git config [--global] user.name "Your Name"
git config [--global] user.email "[email protected]"

3. now upload or update your repo it will ask your username and password to get access to github

<select [(ngModel)]="selectedcarrera" (change)="mostrardatos()" class="form-control" name="carreras">
    <option *ngFor="let x of carreras" [ngValue]="x"> {{x.nombre}} </option>
</select>

In ts

mostrardatos(){

}

Nope, they are not equivalent.

With myObj = 1; you are using a global variable.

The latter declaration create a variable local to the scope you are using.

Try the following code to understand the differences:

external = 5;
function firsttry() {
  var external = 6;
  alert("first Try: " + external);
}

function secondtry() {
  external = 7;
  alert("second Try: " + external);
}

alert(external); // Prints 5
firsttry(); // Prints 6
alert(external); // Prints 5
secondtry(); // Prints 7
alert(external); // Prints 7

The second function alters the value of the global variable "external", but the first function doesn't.

As I had the same question, but didn't find the answer here, I made some tests in order to figure out what the difference actually is. I did this, since I need the encoding for something, which is not URL/URI related.

• encodeURIComponent("A") returns "A", it does not encode "A" to "%41"
• decodeURIComponent("%41") returns "A".
• encodeURI("A") returns "A", it does not encode "A" to "%41"
• decodeURI("%41") returns "A".

-That means both can decode alphanumeric characters, even though they did not encode them. However...

• encodeURIComponent("&") returns "%26".
• decodeURIComponent("%26") returns "&".
• encodeURI("&") returns "&".
• decodeURI("%26") returns "%26".

Even though encodeURIComponent does not encode all characters, decodeURIComponent can decode any value between %00 and %7F.

Note: It appears that if you try to decode a value above %7F (unless it's a unicode value), then your script will fail with an "URI error".