To go up a directory in a link, use ... This means "go up one directory", so your link will look something like this:

<a href="../index.html">Home</a>

A dirty and easy solution could look like

$scope.showdetails = function(fish_id) {
    angular.forEach($scope.fish, function(fish, key) {
        fish.more = fish.id == fish_id;
    });
};

A Java class that can evaluate mathematical expressions:

package test;

public class Calculator {

    public static Double calculate(String expression){
        if (expression == null || expression.length() == 0) {
            return null;
        }
        return calc(expression.replace(" ", ""));
    }
    public static Double calc(String expression) {

        if (expression.startsWith("(") && expression.endsWith(")")) {
            return calc(expression.substring(1, expression.length() - 1));
        }
        String[] containerArr = new String[]{expression};
        double leftVal = getNextOperand(containerArr);
        expression = containerArr[0];
        if (expression.length() == 0) {
            return leftVal;
        }
        char operator = expression.charAt(0);
        expression = expression.substring(1);

        while (operator == '*' || operator == '/') {
            containerArr[0] = expression;
            double rightVal = getNextOperand(containerArr);
            expression = containerArr[0];
            if (operator == '*') {
                leftVal = leftVal * rightVal;
            } else {
                leftVal = leftVal / rightVal;
            }
            if (expression.length() > 0) {
                operator = expression.charAt(0);
                expression = expression.substring(1);
            } else {
                return leftVal;
            }
        }
        if (operator == '+') {
            return leftVal + calc(expression);
        } else {
            return leftVal - calc(expression);
        }

    }

    private static double getNextOperand(String[] exp){
        double res;
        if (exp[0].startsWith("(")) {
            int open = 1;
            int i = 1;
            while (open != 0) {
                if (exp[0].charAt(i) == '(') {
                    open++;
                } else if (exp[0].charAt(i) == ')') {
                    open--;
                }
                i++;
            }
            res = calc(exp[0].substring(1, i - 1));
            exp[0] = exp[0].substring(i);
        } else {
            int i = 1;
            if (exp[0].charAt(0) == '-') {
                i++;
            }
            while (exp[0].length() > i && isNumber((int) exp[0].charAt(i))) {
                i++;
            }
            res = Double.parseDouble(exp[0].substring(0, i));
            exp[0] = exp[0].substring(i);
        }
        return res;
    }


    private static boolean isNumber(int c) {
        int zero = (int) '0';
        int nine = (int) '9';
        return (c >= zero && c <= nine) || c =='.';
    }

    public static void main(String[] args) {
        System.out.println(calculate("(((( -6 )))) * 9 * -1"));
        System.out.println(calc("(-5.2+-5*-5*((5/4+2)))"));

    }

}

You should always use .dark for style and add the following code to make it look cool

    blurEffectView.backgroundColor = .black
    blurEffectView.alpha = 0.4

Here's how I find valid 10-digit US phone numbers. At this point I'm assuming the user wants my content so the numbers themselves are trusted. I'm using in an app that ultimately sends an SMS message so I just want the raw numbers no matter what. Formatting can always be added later

//eliminate every char except 0-9
$justNums = preg_replace("/[^0-9]/", '', $string);

//eliminate leading 1 if its there
if (strlen($justNums) == 11) $justNums = preg_replace("/^1/", '',$justNums);

//if we have 10 digits left, it's probably valid.
if (strlen($justNums) == 10) $isPhoneNum = true;

Edit: I ended up having to port this to Java, if anyone's interested. It runs on every keystroke so I tried to keep it fairly light:

boolean isPhoneNum = false;
if (str.length() >= 10 && str.length() <= 14 ) { 
  //14: (###) ###-####
  //eliminate every char except 0-9
  str = str.replaceAll("[^0-9]", "");

  //remove leading 1 if it's there
  if (str.length() == 11) str = str.replaceAll("^1", "");

  isPhoneNum = str.length() == 10;
}
Log.d("ISPHONENUM", String.valueOf(isPhoneNum));

Have you tried using the PackageManager#getActivityInfo() method? There will be a field that should contain the name of the application.

See the answer to a very similar question here.

Well, I wrote this simple jQuery plugin.

This checkes id or class name, and try to give as much exact selector as possible.

jQuery.fn.getSelector = function() {

    if ($(this).attr('id')) {
        return '#' + $(this).attr('id');
    }

    if ($(this).prop("tagName").toLowerCase() == 'body')    return 'body';

    var myOwn = $(this).attr('class');
    if (!myOwn) {
        myOwn = '>' + $(this).prop("tagName");
    } else {
        myOwn = '.' + myOwn.split(' ').join('.');
    }

    return $(this).parent().getSelector() + ' ' + myOwn;
}

Also instead of adding each file manually, we could do something like:

git add --all

OR

git add -A

This will also remove any files not present or deleted (Tracked files in the current working directory which are now absent).

If you only want to add files which are tracked and have changed, you would want to do

git add -u

What is the difference between git add . & git add --all?

Remember if your route is name-spaced, Like:

product GET  /products/:id(.:format)  spree/products#show

Then try :

helper.link_to("test", app.spree.product_path(Spree::Product.first), method: :get)

output

Spree::Product Load (0.4ms)  SELECT  "spree_products".* FROM "spree_products"  WHERE "spree_products"."deleted_at" IS NULL  ORDER BY "spree_products"."id" ASC LIMIT 1
=> "<a data-method=\"get\" href=\"/products/this-is-the-title\">test</a>" 

How about this one? Actually, this code returns 13 characters max, but it shorter than UUID.

import java.nio.ByteBuffer;
import java.util.UUID;

/**
 * Generate short UUID (13 characters)
 * 
 * @return short UUID
 */
public static String shortUUID() {
  UUID uuid = UUID.randomUUID();
  long l = ByteBuffer.wrap(uuid.toString().getBytes()).getLong();
  return Long.toString(l, Character.MAX_RADIX);
}

What sort of things can cause these errors?

Doing naughty things with memory, e.g. writing after the end of a buffer, or writing to a buffer after it's been freed back to the heap.

How do I debug them?

Use an instrument which adds automated bounds-checking to your executable: i.e. valgrind on Unix, or a tool like BoundsChecker (Wikipedia suggests also Purify and Insure++) on Windows.

Beware that these will slow your application, so they may be unusable if yours is a soft-real-time application.

Another possible debugging aid/tool might be MicroQuill's HeapAgent.

Try this

$client = new \GuzzleHttp\Client();
$client->post(
    'http://www.example.com/user/create',
    array(
        'form_params' => array(
            'email' => '[email protected]',
            'name' => 'Test user',
            'password' => 'testpassword'
        )
    )
);

Java does not have a goto feature like there is in C++. But still, goto is a reserved keyword in Java. They might implement it in the future. For your question, the answer is that there is something called label in Java to which you can apply a continue and break statement. Find the code below:

public static void main(String ...args) {
    outerLoop: for(int i=0;i<10;i++) {
    for(int j=10;j>0;j--) {
        System.out.println(i+" "+j);
        if(i==j) {
            System.out.println("Condition Fulfilled");
            break outerLoop;
        }
    }
    }
    System.out.println("Got out of the outer loop");
}

Although not as straightforward as isinstance(x, list) one could use as well:

this_is_a_list=[1,2,3]
if type(this_is_a_list) == type([]):
    print("This is a list!")

and I kind of like the simple cleverness of that

var myLength = $("#myTextbox").val().length;

um why not just set an image to the bottom layer and forgo all the annoyances

<img src='yourmom.png' style='position:fixed;top:0px;left:0px;width:100%;height:100%;z-index:-1;'>

As Maciej Jonczyk mentioned, you may also need to increase margins

par(las=2)
par(mar=c(8,8,1,1)) # adjust as needed
plot(...)

This seems to have changed (probably with log4j2) to:

-Dlog4j.configurationFile=file:C:\Users\me\log4j.xml

See: https://logging.apache.org/log4j/2.x/manual/configuration.html

From EL 2.2 specification (get the one below "Click here to download the spec for evaluation"):

1.10 Empty Operator - empty A

The empty operator is a prefix operator that can be used to determine if a value is null or empty.

To evaluate empty A

• If A is null, return true
• Otherwise, if A is the empty string, then return true
• Otherwise, if A is an empty array, then return true
• Otherwise, if A is an empty Map, return true
• Otherwise, if A is an empty Collection, return true
• Otherwise return false

So, considering the interfaces, it works on Collection and Map only. In your case, I think Collection is the best option. Or, if it's a Javabean-like object, then Map. Either way, under the covers, the isEmpty() method is used for the actual check. On interface methods which you can't or don't want to implement, you could throw UnsupportedOperationException.

Using requests library

import requests
import shutil,os

headers = {
    'user-agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.108 Safari/537.36'
}
currentDir = os.getcwd()
path = os.path.join(currentDir,'Images')#saving images to Images folder

def ImageDl(url):
    attempts = 0
    while attempts < 5:#retry 5 times
        try:
            filename = url.split('/')[-1]
            r = requests.get(url,headers=headers,stream=True,timeout=5)
            if r.status_code == 200:
                with open(os.path.join(path,filename),'wb') as f:
                    r.raw.decode_content = True
                    shutil.copyfileobj(r.raw,f)
            print(filename)
            break
        except Exception as e:
            attempts+=1
            print(e)


ImageDl(url)

This might work for you:

printf "{new\nto\nlinux}" | paste -sd' '            
{new to linux}

or:

printf "{new\nto\nlinux}" | tr '\n' ' '            
{new to linux}

or:

printf "{new\nto\nlinux}" |sed -e ':a' -e '$!{' -e 'N' -e 'ba' -e '}' -e 's/\n/ /g'
{new to linux}

No, it is not RESTful. The only reason why you should be putting a verb (force_delete) into the URI is if you would need to overload GET/POST methods in an environment where PUT/DELETE methods are not available. Judging from your use of the DELETE method, this is not the case.

HTTP error code 409/Conflict should be used for situations where there is a conflict which prevents the RESTful service to perform the operation, but there is still a chance that the user might be able to resolve the conflict himself. A pre-deletion confirmation (where there are no real conflicts which would prevent deletion) is not a conflict per se, as nothing prevents the API from performing the requested operation.

As Alex said (I don't know who downvoted him, he is correct), this should be handled in the UI, because a RESTful service as such just processes requests and should be therefore stateless (i.e. it must not rely on confirmations by holding any server-side information about of a request).

Two examples how to do this in UI would be to:

• pre-HTML5:* show a JS confirmation dialog to the user, and send the request only if the user confirms it
• HTML5:* use a form with action DELETE where the form would contain only "Confirm" and "Cancel" buttons ("Confirm" would be the submit button)

(*) Please note that HTML versions prior to 5 do not support PUT and DELETE HTTP methods natively, however most modern browsers can do these two methods via AJAX calls. See this thread for details about cross-browser support.

Update (based on additional investigation and discussions):

The scenario where the service would require the force_delete=true flag to be present violates the uniform interface as defined in Roy Fielding's dissertation. Also, as per HTTP RFC, the DELETE method may be overridden on the origin server (client), implying that this is not done on the target server (service).

So once the service receives a DELETE request, it should process it without needing any additional confirmation (regardless if the service actually performs the operation).

You could remove your node_modules/ folder and then reinstall the dependencies from package.json.

rm -rf node_modules/
npm install

This would erase all installed packages in the current folder and only install the dependencies from package.json. If the dependencies have been previously installed npm will try to use the cached version, avoiding downloading the dependency a second time.

So long as Excel can open the file, the functionality to change the format of the opened file is built in.

To convert an .html file, open it using Excel (File - Open) and then save it as a .xlsx file from Excel (File - Save as).

To do it using VBA, the code would look like this:

Sub Open_HTML_Save_XLSX()

    Workbooks.Open Filename:="C:\Temp\Example.html"
    ActiveWorkbook.SaveAs Filename:= _
        "C:\Temp\Example.xlsx", FileFormat:= _
        xlOpenXMLWorkbook

End Sub

I know there may be several ways to do this, I'm using Core 3.1 and was looking for the optimal/cleaner option and I ended up doing this:

1. My startup class is as default

public Startup(IConfiguration configuration)
{
    Configuration = configuration;
}

public IConfiguration Configuration { get; }

// This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
    services.AddControllers();
}

2. My appsettings.json is like this

{
  "CompanySettings": {
    "name": "Fake Co"
  }
}

3. My class is an API Controller, so first I added the using reference and then injected the IConfiguration interface

using Microsoft.Extensions.Configuration;

public class EmployeeController 
{
    private IConfiguration _configuration;
    public EmployeeController(IConfiguration configuration)
    {
        _configuration = configuration;
    }
}

4. Finally I used the GetValue method

public async Task<IActionResult> Post([FromBody] EmployeeModel form)
{
    var companyName = configuration.GetValue<string>("CompanySettings:name");
    // companyName = "Fake Co"
}

Multi-threading with javascript is clearly possible using webworkers bring by HTML5.

Main difference between webworkers and a standard multi-threading environment is memory resources are not shared with the main thread, a reference to an object is not visible from one thread to another. Threads communicate by exchanging messages, it is therefore possible to implement a synchronzization and concurrent method call algorithm following an event-driven design pattern.

Many frameworks exists allowing to structure programmation between threads, among them OODK-JS, an OOP js framework supporting concurrent programming https://github.com/GOMServices/oodk-js-oop-for-js

I use sp_who to get list of all process in database. This is better because you may want to review which process to kill.

declare @proc table(
    SPID bigint,
    Status nvarchar(255),
    Login nvarchar(255),
    HostName nvarchar(255),
    BlkBy nvarchar(255),
    DBName nvarchar(255),
    Command nvarchar(MAX),
    CPUTime bigint,
    DiskIO bigint,
    LastBatch nvarchar(255),
    ProgramName nvarchar(255),
    SPID2 bigint,
    REQUESTID bigint
)

insert into @proc
exec sp_who2

select  *, KillCommand = concat('kill ', SPID, ';')
from    @proc

Result
You can use command in KillCommand column to kill the process you want to.

SPID    KillCommand
26      kill 26;
27      kill 27;
28      kill 28;

For those who tried everything but not not working. Please check that if you set darkmode with AppCompatDelegate.setDefaultNightMode and the system is not dark, then Configuration.setLocale will not work above Andorid 7.0.

Add this code in your every activity to solve this issue:

override fun applyOverrideConfiguration(overrideConfiguration: Configuration?) {
  if (overrideConfiguration != null) {
    val uiMode = overrideConfiguration.uiMode
    overrideConfiguration.setTo(baseContext.resources.configuration)
    overrideConfiguration.uiMode = uiMode
  }
  super.applyOverrideConfiguration(overrideConfiguration)
}

Command to install GCC and Development Tools on a CentOS / RHEL 7 server

Type the following yum command as root user:

yum group install "Development Tools"

OR

sudo yum group install "Development Tools"

If above command failed, try:

yum groupinstall "Development Tools"

Here is a cool feature I discovered recently, I tried this on the console and it seems to work:

var text = "border-bottom-left-radius";

var newText = text.replace(/-/g,function(match, index){
    return " " + index + " ";
});

Which returned: "border 6 bottom 13 left 18 radius"

So this seems to be what you are looking for.

In SpringBoot 2.1, I found another solution. Extend standard factory class method getTomcatWebServer. And then return it as a bean from anywhere.

public class CustomTomcatServletWebServerFactory extends TomcatServletWebServerFactory {

    @Override
    protected TomcatWebServer getTomcatWebServer(Tomcat tomcat) {
        System.setProperty("catalina.useNaming", "true");
        tomcat.enableNaming();
        return new TomcatWebServer(tomcat, getPort() >= 0);
    }
}

@Component
public class TomcatConfiguration {
    @Bean
    public ConfigurableServletWebServerFactory webServerFactory() {
        TomcatServletWebServerFactory factory = new CustomTomcatServletWebServerFactory();

        return factory;
    }

Loading resources from context.xml doesn't work though. Will try to find out.

Particular example: use a BindingResult object as an argument for a validate method of a Validator inside a Controller.

Then, you can check this object looking for validation errors:

validator.validate(modelObject, bindingResult);  
if (bindingResult.hasErrors()) {  
    // do something  
}

There is an easier way where you don't have to type any code (Ideal for Testing or One-time updates):

Step 1

• Right click on table in the explorer and select "Edit top 100 rows";

Step 2

• Then you can select the rows that you want (Ctrl + Click or Ctrl + A), and Right click and Copy (Note: If you want to add a "where" condition, then Right Click on Grid -> Pane -> SQL Now you can edit Query and add WHERE condition, then Right Click again -> Execute SQL, your required rows will be available to select on bottom)

Step 3

• Follow Step 1 for the target table.

Step 4

• Now go to the end of the grid and the last row will have an asterix (*) in first column (This row is to add new entry). Click on that to select that entire row and then PASTE (Ctrl + V). The cell might have a Red Asterix (indicating that it is not saved)

Step 5

• Click on any other row to trigger the insert statement (the Red Asterix will disappear)

Note - 1: If the columns are not in the correct order as in Target table, you can always follow Step 2, and Select the Columns in the same order as in the Target table

Note - 2 - If you have Identity columns then execute SET IDENTITY_INSERT sometableWithIdentity ON and then follow above steps, and in the end execute SET IDENTITY_INSERT sometableWithIdentity OFF

You can perform it, this way:

$('input[id=ans]').is(':checked');     

Have you tried:

ifconfig 10:35978f0 down

As the physical interface is 10 and the virtual aspect is after the colon :.

See also https://www.cyberciti.biz/faq/linux-command-to-remove-virtual-interfaces-or-network-aliases/

I had the same issue.

just removed all my worskspace:

C:\Users\<name>\.<eclipse similar name>

It is a very simple and effective utility build in jquery to implement pagination on html table http://tablesorter.com/docs/example-pager.html

Download the plugin from http://tablesorter.com/addons/pager/jquery.tablesorter.pager.js

After adding this plugin add following code in head script

$(document).ready(function() { 
    $("table") 
    .tablesorter({widthFixed: true, widgets: ['zebra']}) 
    .tablesorterPager({container: $("#pager")}); 
}); 

I've also found that if you had display:none, then programmatically changed it to be visible, you might also have to set

$tr.css({display:'table-row'});

rather than display:inline or display:block otherwise the cell might only show as taking up 1 cell, no matter how large you have the colspan set to.

I know this is an old question. But I figure out an alternative way to use the library in Swift project, which might be helpful for those who don't want to import framework introduced in these answers.

In Swift project, create a Objective-C bridging header, create NSData category (or custom class that to use the library) in Objective-C. The only drawback would be that you have to write all implementation code in Objective-C. For example:

#import "NSData+NSDataEncryptionExtension.h"
#import <CommonCrypto/CommonCryptor.h>

@implementation NSData (NSDataEncryptionExtension)
- (NSData *)AES256EncryptWithKey:(NSString *)key {
    //do something
}

- (NSData *)AES256DecryptWithKey:(NSString *)key {
//do something
}

And then in your objective-c bridging header, add this

#import "NSData+NSDataEncryptionExtension.h"

And then in Swift class do similar thing:

public extension String {
func encryp(withKey key:String) -> String? {
    if let data = self.data(using: .utf8), let encrypedData = NSData(data: data).aes256Encrypt(withKey: key) {
        return encrypedData.base64EncodedString()
    }
    return nil
}
func decryp(withKey key:String) -> String? {
    if let data = NSData(base64Encoded: self, options: []), let decrypedData = data.aes256Decrypt(withKey: key) {
        return decrypedData.UTF8String
    }
    return nil
}
}

It works as expected.

You could look into using BrowserStack: http://www.browserstack.com

While not free, it is rather cheap. It allows you to test against several iOS versions on both iPhone and iPad, along with Android, and various desktop browsers and OSs. It has proved quite invaluable to my workplace for doing just these sort of tests.

The DragListView lib does this really neat with very nice support for custom animations such as elevation animations. It is also still maintained and updated on a regular basis.

Here is how you use it:

1: Add the lib to gradle first

dependencies {
    compile 'com.github.woxthebox:draglistview:1.2.1'
}

2: Add list from xml

<com.woxthebox.draglistview.DragListView
    android:id="@+id/draglistview"
    android:layout_width="match_parent"
    android:layout_height="match_parent"/>

3: Set the drag listener

mDragListView.setDragListListener(new DragListView.DragListListener() {
    @Override
    public void onItemDragStarted(int position) {
    }

    @Override
    public void onItemDragEnded(int fromPosition, int toPosition) {
    }
});

4: Create an adapter overridden from DragItemAdapter

public class ItemAdapter extends DragItemAdapter<Pair<Long, String>, ItemAdapter.ViewHolder>
    public ItemAdapter(ArrayList<Pair<Long, String>> list, int layoutId, int grabHandleId, boolean dragOnLongPress) {
        super(dragOnLongPress);
        mLayoutId = layoutId;
        mGrabHandleId = grabHandleId;
        setHasStableIds(true);
        setItemList(list);
}

5: Implement a viewholder that extends from DragItemAdapter.ViewHolder

public class ViewHolder extends DragItemAdapter.ViewHolder {
    public TextView mText;

    public ViewHolder(final View itemView) {
        super(itemView, mGrabHandleId);
        mText = (TextView) itemView.findViewById(R.id.text);
    }

    @Override
    public void onItemClicked(View view) {
    }

    @Override
    public boolean onItemLongClicked(View view) {
        return true;
    }
}

For more detailed info go to https://github.com/woxblom/DragListView

Make it

float b= 3.6f;

A floating-point literal is of type float if it is suffixed with an ASCII letter F or f; otherwise its type is double and it can optionally be suffixed with an ASCII letter D or d

• Read More

simply,

select sysdate-1 from dual

there's a bunch more info and detail here: http://www.orafaq.com/faq/how_does_one_add_a_day_hour_minute_second_to_a_date_value

I used the javascript date funtion toLocaleDateString to get

var Today = new Date();
var r = Today.toLocaleDateString();

The result of r will be

11/29/2016

More info at: http://www.w3schools.com/jsref/jsref_tolocaledatestring.asp

I installed miniconda and found all the installed packages in /miniconda3/pkgs

As Blexy already answered, go to "Behavior > Site Content > All Pages".

Just pay attention that "Behavior" appears two times in the left sidebar and we need to click on the second option:

better. that exactly will work.

let mx = Matrix(9, 9);

function Matrix(w, h){
    let mx = Array(w);
    for(let i of mx.keys())
        mx[i] = Array(h);
    return mx;
}

what was shown

Array(9).fill(Array(9)); // Not correctly working

It does not work, because all cells are fill with one array

Run this query and you'll probably get what you're looking for:

SELECT table_schema "DB Name",
        ROUND(SUM(data_length + index_length) / 1024 / 1024, 1) "DB Size in MB" 
FROM information_schema.tables 
GROUP BY table_schema; 

This query comes from the mysql forums, where there are more comprehensive instructions available.

import angularFirebaseStore 

in app.module.ts and set it as a provider like service

Try this one. It is not nice but it will work as long as the input is constant format from your date picker.

It is badDate coming from your picker in this example

https://jsfiddle.net/xs8tvox9/

var dateFormat = 'DD-MM-YYYY'
var badDate = "2016-10-19";

var splittedDate = badDate.split('-');

if (splittedDate.length == 3) {
  var d = moment(splittedDate[2]+"-"+splittedDate[1]+"-"+splittedDate[0], dateFormat);
  alert(d.isValid())
} else {
  //incorrectFormat
}

You do not need to create sub directory. Just create blob container and use file name like the variable filename as below code:

string filename = "document/tech/user-guide.pdf";
CloudStorageAccount cloudStorageAccount = CloudStorageAccount.Parse(ConnectionString);
CloudBlockBlob blob = cloudBlobContainer.GetBlockBlobReference(filename);
blob.StreamWriteSizeInBytes = 20 * 1024;
blob.UploadFromStream(fileStream); // fileStream is System.IO.Stream

www to non www with https

RewriteEngine on

RewriteCond %{HTTP_HOST} ^www\.(.*)$ [NC]
RewriteRule ^(.*)$ https://%1/$1 [R=301,L]

RewriteCond %{ENV:HTTPS} !on
RewriteRule ^(.*)$ https://%{HTTP_HOST}%{REQUEST_URI} [R=301,L]

For the iOS9, Apple made a radical decision with iOS 9, disabling all unsecured HTTP traffic from iOS apps, as a part of App Transport Security (ATS).

To simply disable ATS, you can follow this steps by open Info.plist, and add the following lines:

<key>NSAppTransportSecurity</key>
  <dict>
      <key>NSAllowsArbitraryLoads</key>
      <true/>
  </dict>

You need to add style="overflow-y:scroll;" to the div tag. (This will force a scrollbar on the vertical).

If you only want a scrollbar when needed, just do overflow-y:auto;

 lstr=[1, 2, 3]
 lstr=map(str,lstr)
 r=re.compile('^(3){1}')
 results=list(filter(r.match,lstr))
 print(results)

Cut has a --complement flag that makes it easy (and fast) to delete columns. The resulting syntax is analogous with what you want to do -- making the solution easier to read/understand. Complement also works for the case where you would like to delete non-contiguous columns.

$ foo='1 2 3 %s 5 6 7'
$ echo "$foo" | cut --complement -d' ' -f1-3
%s 5 6 7
$

Using jQuery:

$('#play-pause').click(function(){
  if ( $('#video-over').css('visibility') == 'hidden' )
    $('#video-over').css('visibility','visible');
  else
    $('#video-over').css('visibility','hidden');
});

This page https://developers.facebook.com/docs/reference/fql/like/ wrote, you can't get fan list.

"The Post, Video, Note, Link, Photo and Album Graph API objects contain an equivalent connection called likes."

NOTE: fql like query is deprecated

This is what worked for me.

$(window).bind("pageshow", function() {
    $("#id").val('');
    $("#another_id").val('');
});

I initially had this in the $(document).ready section of my jquery, which also worked. However, I heard that not all browsers fire $(document).ready on hitting back button, so I took it out. I don't know the pros and cons of this approach, but I have tested on multiple browsers and on multiple devices, and no issues with this solution were found.

This works perfectly

if exist "%~1\" echo Directory

we need to use %~1 to remove quotes from %1, and add a backslash at end. Then put thw whole into qutes again.

Here is how I do it on iOS 9 in Swift -

import UIKit

class CustomView : UIView {

    init() {
        super.init(frame: UIScreen.mainScreen().bounds);

        //for debug validation
        self.backgroundColor = UIColor.blueColor();
        print("My Custom Init");

        return;
    }

    required init?(coder aDecoder: NSCoder) { fatalError("init(coder:) has not been implemented"); }
}

Here is a full project with example:

• UIView Example Project (with SubView example)

I got this from here on a x64 bit system: Python 3.7.0b5 (v3.7.0b5:abb8802389, May 31 2018, 01:54:01) [MSC v.1913 64 bit (AMD64)] on win32

function myFunction(){
  for(var i = 0;i < n;i++){
    for(var m = 0;m < n;m++){
      if(/*break condition*/){
        goto out;
      }
    }
  }
out:
 //your out of the loop;
}

My issue was with different version of DevExpress.
Deleting all contents from bin and obj folders made my website run again...

Reference: https://www.devexpress.com/Support/Center/Question/Details/KA18674

Use &

SCSS

.container {
    background:red;
    color:white;

    &.hello {
        padding-left:50px;
    }
}

https://sass-lang.com/documentation/style-rules/parent-selector

input may have a hidden attribute:

input:checked + span::before {
  content: 'un';
}

<label>
  <input type='checkbox' hidden/>
  <span>check</span>
<label>

I got the same error when using % as a percent character in my format string. The solution to this is to double up the %%.

the above script may not run in ksh. you have to use the 'let' opparand to assing the value and then echo it.

val1=4

val2=3

let val3=$val1+$val2

echo $val3 

In other words, is there a better solution than needing to specify the format?

Yes, there is now (ie in late 2016), thanks to anytime::anydate from the anytime package.

See the following for some examples from above:

R> anydate(c("01 Jan 2000", "01/01/2000", "2015/10/10"))
[1] "2000-01-01" "2000-01-01" "2015-10-10"
R> 

As you said, these are in fact unambiguous and should just work. And via anydate() they do. Without a format.

As there is nothing in this question (but its age) that requires a solution in Windows.Forms, here is a way to do this in WPF in code-behind.

TextBlock tb = new TextBlock();
tb.Inlines.Add(new Run("Background indicates packet repeat status:"));
tb.Inlines.Add(new LineBreak());
tb.Inlines.Add(new LineBreak());
Run r = new Run("White");
r.Background = Brushes.White;
r.ToolTip = "This word has a White background";
tb.Inlines.Add(r);
tb.Inlines.Add(new Run("\t= Identical Packet received at this time."));
tb.Inlines.Add(new LineBreak());
r = new Run("SkyBlue");
r.ToolTip = "This word has a SkyBlue background";
r.Background = new SolidColorBrush(Colors.SkyBlue);
tb.Inlines.Add(r);
tb.Inlines.Add(new Run("\t= Original Packet received at this time."));

myControl.Content = tb;

If you are using Angular and Firebase, you can also use the DTOptionsBuilder :

angular.module('your_module', [
'ui.router',
'oc.lazyLoad',
'ui.bootstrap',
'ngSanitize',
'firebase']).controller("your_controller", function ($scope, $firebaseArray, DTOptionsBuilder) {

var ref = firebase.database().ref().child("your_database_table");

// create a synchronized array
$scope.your_database_table = $firebaseArray(ref);

ref.on('value', snap => {

    $scope.dtOptions = DTOptionsBuilder.newOptions()
        .withOption('language',
        {
            "sProcessing": "Traitement en cours...",
            "sSearch": "Rechercher :",
            "sLengthMenu": "Afficher _MENU_ éléments",
            "sInfo": "Affichage de l'élément _START_ à _END_ sur _TOTAL_ éléments",
            "sInfoEmpty": "Affichage de l'élément 0 à 0 sur 0 élément",
            "sInfoFiltered": "(filtré de _MAX_ éléments au total)",
            "sInfoPostFix": "",
            "sLoadingRecords": "Chargement en cours...",
            "sZeroRecords": "Aucun élément à afficher",
            "sEmptyTable": "Aucune donnée disponible dans le tableau",
            "oPaginate": {
                "sFirst": "Premier",
                "sPrevious": "Précédent",
                "sNext": "Suivant",
                "sLast": "Dernier"
            },
            "oAria": {
                "sSortAscending": ": activer pour trier la colonne par ordre croissant",
                "sSortDescending": ": activer pour trier la colonne par ordre décroissant"
            }
        }
        )

});})

I hope this will help.

git branch -a - All branches.

git branch -r - Remote branches only.

git branch -l or git branch - Local branches only.

theMaxx answer works in nuxt/vue, smooth scrolling is default behavior

<button @click=scrollToTop()>Jump to top of page

  methods: {
    scrollToTop() {
      window.scrollTo({ top: 0 });
    }
  }

I just simply forget running the Docker Desktop in my mac, after running Docker Desktop, you will be good to go.

You can also use remove to remove a value by index as well.

n = [1, 3, 5]

n.remove(n[1])

n would then refer to [1, 5]

Actually, that does not delete the variable/property. All it will do is set its value to None, therefore the variable will still take up space in memory. If you want to completely wipe all existence of the variable from memory, you can just type:

del self.left

None of these answers fit my specific situation, which was that I wanted to run one specific cron job, just once, and run it immediately.

I'm on a Ubuntu server, and I use cPanel to setup my cron jobs.

I simply wrote down my current settings, and then edited them to be one minute from now. When I fixed another bug, I just edited it again to one minute from now. And when I was all done, I just reset the settings back to how they were before.

Example: It's 4:34pm right now, so I put 35 16 * * *, for it to run at 16:35.

It worked like a charm, and the most I ever had to wait was a little less than one minute.

I thought this was a better option than some of the other answers because I didn't want to run all of my weekly crons, and I didn't want the job to run every minute. It takes me a few minutes to fix whatever the issues were before I'm ready to test it again. Hopefully this helps someone.

This is the most famous case and It has many names

• kebab-case: It's the name most adopted by official software
• caterpillar-case
• dash-case
• hyphen-case or hyphenated-case
• lisp-case
• spinal-case
• css-case
• slug-case
• friendly-url-case

While it's true that json is a built-in module, I also found that on an Ubuntu system with python-minimal installed, you DO have python but you can't do import json. And then I understand that you would try to install the module using pip!

If you have python-minimal you'll get a version of python with less modules than when you'd typically compile python yourself, and one of the modules you'll be missing is the json module. The solution is to install an additional package, called libpython2.7-stdlib, to install all 'default' python libraries.

sudo apt install libpython2.7-stdlib

And then you can do import json in python and it would work!

Why not simply use the submit button to run the code you want. If your function returns false, it will cancel the submission.

$("#testForm").submit(function() {
    /* Do Something */
    return false;
});

A Linked List, at its core is a bunch of Nodes linked together.

So, you need to start with a simple Node class:

public class Node {
    public Node next;
    public Object data;
}

Then your linked list will have as a member one node representing the head (start) of the list:

public class LinkedList {
    private Node head;
}

Then you need to add functionality to the list by adding methods. They usually involve some sort of traversal along all of the nodes.

public void printAllNodes() {
    Node current = head;
    while (current != null) 
    {
        Console.WriteLine(current.data);
        current = current.next;
    }
}

Also, inserting new data is another common operation:

public void Add(Object data) {
    Node toAdd = new Node();
    toAdd.data = data;
    Node current = head;
    // traverse all nodes (see the print all nodes method for an example)
    current.next = toAdd;
}

This should provide a good starting point.

that worked but try it this way.

echo "<script>
alert('There are no fields to generate a report');
window.location.href='admin/ahm/panel';  
</script>";

alert on top then location next

You could use LINQBridge (MIT Licensed) to add support for lambda expressions to C# 2.0:

With Studio's multi-targeting and LINQBridge, you'll be able to write local (LINQ to Objects) queries using the full power of the C# 3.0 compiler—and yet your programs will require only Framework 2.0.

You must use some of the C # conversion systems:

string to boolean: True to true

string str = "True";
bool mybool = System.Convert.ToBoolean(str);

boolean to string: true to True

bool mybool = true;
string str = System.Convert.ToString(mybool);

//or

string str = mybool.ToString();

bool.Parse expects one parameter which in this case is str, even .

Convert.ToBoolean expects one parameter.

bool.TryParse expects two parameters, one entry (str) and one out (result).

If TryParse is true, then the conversion was correct, otherwise an error occurred

string str = "True";
bool MyBool = bool.Parse(str);

//Or

string str = "True";
if(bool.TryParse(str, out bool result))
{
   //Correct conversion
}
else
{
     //Incorrect, an error has occurred
}

Answering this has been good, as the comments have led to an improvement in my own understanding of Python variables.

As noted in the comments, when you loop over a list with something like for member in my_list the member variable is bound to each successive list element. However, re-assigning that variable within the loop doesn't directly affect the list itself. For example, this code won't change the list:

my_list = [1,2,3]
for member in my_list:
    member = 42
print my_list

Output:

[1, 2, 3]

If you want to change a list containing immutable types, you need to do something like:

my_list = [1,2,3]
for ndx, member in enumerate(my_list):
    my_list[ndx] += 42
print my_list

Output:

[43, 44, 45]

If your list contains mutable objects, you can modify the current member object directly:

class C:
    def __init__(self, n):
        self.num = n
    def __repr__(self):
        return str(self.num)

my_list = [C(i) for i in xrange(3)]
for member in my_list:
    member.num += 42
print my_list

[42, 43, 44]

Note that you are still not changing the list, simply modifying the objects in the list.

You might benefit from reading Naming and Binding.

The ioctl function is useful for implementing a device driver to set the configuration on the device. e.g. a printer that has configuration options to check and set the font family, font size etc. ioctl could be used to get the current font as well as set the font to a new one. A user application uses ioctl to send a code to a printer telling it to return the current font or to set the font to a new one.

int ioctl(int fd, int request, ...)

1. fd is file descriptor, the one returned by open;
2. request is request code. e.g GETFONT will get the current font from the printer, SETFONT will set the font on the printer;
3. the third argument is void *. Depending on the second argument, the third may or may not be present, e.g. if the second argument is SETFONT, the third argument can be the font name such as "Arial";

int request is not just a macro. A user application is required to generate a request code and the device driver module to determine which configuration on device must be played with. The application sends the request code using ioctl and then uses the request code in the device driver module to determine which action to perform.

A request code has 4 main parts

    1. A Magic number - 8 bits
    2. A sequence number - 8 bits
    3. Argument type (typically 14 bits), if any.
    4. Direction of data transfer (2 bits).  

If the request code is SETFONT to set font on a printer, the direction for data transfer will be from user application to device driver module (The user application sends the font name "Arial" to the printer). If the request code is GETFONT, direction is from printer to the user application.

In order to generate a request code, Linux provides some predefined function-like macros.

1._IO(MAGIC, SEQ_NO) both are 8 bits, 0 to 255, e.g. let us say we want to pause printer. This does not require a data transfer. So we would generate the request code as below

#define PRIN_MAGIC 'P'
#define NUM 0
#define PAUSE_PRIN __IO(PRIN_MAGIC, NUM) 

and now use ioctl as

ret_val = ioctl(fd, PAUSE_PRIN);

The corresponding system call in the driver module will receive the code and pause the printer.

2. __IOW(MAGIC, SEQ_NO, TYPE) MAGIC and SEQ_NO are the same as above, and TYPE gives the type of the next argument, recall the third argument of ioctl is void *. W in __IOW indicates that the data flow is from user application to driver module. As an example, suppose we want to set the printer font to "Arial".

#define PRIN_MAGIC 'S'
#define SEQ_NO 1
#define SETFONT __IOW(PRIN_MAGIC, SEQ_NO, unsigned long)

further,

char *font = "Arial";
ret_val = ioctl(fd, SETFONT, font); 

Now font is a pointer, which means it is an address best represented as unsigned long, hence the third part of _IOW mentions type as such. Also, this address of font is passed to corresponding system call implemented in device driver module as unsigned long and we need to cast it to proper type before using it. Kernel space can access user space and hence this works. other two function-like macros are __IOR(MAGIC, SEQ_NO, TYPE) and __IORW(MAGIC, SEQ_NO, TYPE) where the data flow will be from kernel space to user space and both ways respectively.

Please let me know if this helps!

$key is the index for the current array element, and $val is the value of that array element.

The first element has an index of 0. Therefore, to access it, use $arr[0]

To get the first element of the array, use this

$firstFound = false;
foreach($arr as $key=>$val)
{
    if (!$firstFound)
       $first = $val;
    else
       $firstFound = true;
    // do whatever you want here
}

// now ($first) has the value of the first element in the array

foreach(Foos foo in Enum.GetValues(typeof(Foos)))

I was looking for the same solution and the following worked for me.

    Calendar calendar = Calendar.getInstance();
    calendar.set(Calendar.HOUR_OF_DAY, 0);
    calendar.clear(Calendar.HOUR);
    calendar.clear(Calendar.MINUTE);
    calendar.clear(Calendar.SECOND);
    calendar.clear(Calendar.MILLISECOND);

    Date today = calendar.getTime();

Please note that I am using calendar.set(Calendar.HOUR_OF_DAY, 0) for HOUR_OF_DAY instead of using the clear method, because it is suggested in Calendar.clear method's javadocs as the following

The HOUR_OF_DAY, HOUR and AM_PM fields are handled independently and the the resolution rule for the time of day is applied. Clearing one of the fields doesn't reset the hour of day value of this Calendar. Use set(Calendar.HOUR_OF_DAY, 0) to reset the hour value.

With the above posted solution I get output as

Wed Sep 11 00:00:00 EDT 2013

Using clear method for HOUR_OF_DAY resets hour at 12 when executing after 12PM or 00 when executing before 12PM.

See if you can recreate the issue in an Incognito tab. If you find that the problem no longer occurs then I would recommend you go through your extensions, perhaps disabling them one at a time. This is commonly the cause as touched on by Nikola

This is a late answer, but I just came across this... To get the indenting correct on any lines that wrap, try it this way:

ul {
  list-style: none;
  margin-left: 0;
  padding-left: 0;
}

li {
  padding-left: 1em;
  text-indent: -1em;
}

li:before {
  content: "+";
  padding-right: 5px;
}

Use .form-inline = This will left-align labels and inline-block controls for a compact layout

Example: http://jsfiddle.net/hSuy4/292/

<div class="form-inline">
<input type="text">
<input type="button" class="btn" value="submit">
</div>

.form-horizontal = Right align labels and float them to the left to make them appear on the same line as controls which is better for 2 column form layout.

(e.g. 
Label 1: [textbox]
Label 2: [textbox]
     : [button]
)

Examples: http://twitter.github.io/bootstrap/base-css.html#forms

First, thing you need to keep in mind that, if you want to go back to a previous activity. Then don't call finish() method when goes to another activity using Intent.

After that you have two way to back from current activity to previous activity:

Simply call: finish() under button click listener, Or Override the following method to back using system back button:

@Override
public void onBackPressed() {
    super.onBackPressed();
}

Here is the method I use. It does not require any hidden DOM elements on the page, and only requires an anchor tag with the href of the modal partial, and a class of 'modalTrigger'. When the modal is closed (hidden) it is removed from the DOM.

  (function(){
        // Create jQuery body object
        var $body = $('body'),

        // Use a tags with 'class="modalTrigger"' as the triggers
        $modalTriggers = $('a.modalTrigger'),

        // Trigger event handler
        openModal = function(evt) {
              var $trigger = $(this),                  // Trigger jQuery object

              modalPath = $trigger.attr('href'),       // Modal path is href of trigger

              $newModal,                               // Declare modal variable

              removeModal = function(evt) {            // Remove modal handler
                    $newModal.off('hidden.bs.modal');  // Turn off 'hide' event
                    $newModal.remove();                // Remove modal from DOM
              },

              showModal = function(data) {             // Ajax complete event handler
                    $body.append(data);                // Add to DOM
                    $newModal = $('.modal').last();    // Modal jQuery object
                    $newModal.modal('show');           // Showtime!
                    $newModal.on('hidden.bs.modal',removeModal); // Remove modal from DOM on hide
              };

              $.get(modalPath,showModal);             // Ajax request

              evt.preventDefault();                   // Prevent default a tag behavior
        };

        $modalTriggers.on('click',openModal);         // Add event handlers
  }());

To use, just create an a tag with the href of the modal partial:

<a href="path/to/modal-partial.html" class="modalTrigger">Open Modal</a>

In short, services set to Automatic will start during the boot process, while services set to start as Delayed will start shortly after boot.

Starting your service Delayed improves the boot performance of your server and has security benefits which are outlined in the article Adriano linked to in the comments.

Update: "shortly after boot" is actually 2 minutes after the last "automatic" service has started, by default. This can be configured by a registry key, according to Windows Internals and other sources (3,4).

The registry keys of interest (At least in some versions of windows) are:

• HKLM\SYSTEM\CurrentControlSet\services\<service name>\DelayedAutostart will have the value 1 if delayed, 0 if not.
• HKLM\SYSTEM\CurrentControlSet\services\AutoStartDelay or HKLM\SYSTEM\CurrentControlSet\Control\AutoStartDelay (on Windows 10): decimal number of seconds to wait, may need to create this one. Applies globally to all Delayed services.

Using sshpass works best. To just include your password in scp use the ' ':

scp user1:'password'@xxx.xxx.x.5:sys_config /var/www/dev/

From django doc:

SQLite is meant to be a lightweight database, and thus can't support a high level of concurrency. OperationalError: database is locked errors indicate that your application is experiencing more concurrency than sqlite can handle in default configuration. This error means that one thread or process has an exclusive lock on the database connection and another thread timed out waiting for the lock the be released.

Python's SQLite wrapper has a default timeout value that determines how long the second thread is allowed to wait on the lock before it times out and raises the OperationalError: database is locked error.

If you're getting this error, you can solve it by:

• Switching to another database backend. At a certain point SQLite becomes too "lite" for real-world applications, and these sorts of concurrency errors indicate you've reached that point.
• Rewriting your code to reduce concurrency and ensure that database transactions are short-lived.
• Increase the default timeout value by setting the timeout database option

http://docs.djangoproject.com/en/dev/ref/databases/#database-is-locked-errorsoption

Define width of .absorbing-column

Set table-layout to auto and define an extreme width on .absorbing-column.

Here I have set the width to 100% because it ensures that this column will take the maximum amount of space allowed, while the columns with no defined width will reduce to fit their content and no further.

This is one of the quirky benefits of how tables behave. The table-layout: auto algorithm is mathematically forgiving.

You may even choose to define a min-width on all td elements to prevent them from becoming too narrow and the table will behave nicely.

table {_x000D_
    table-layout: auto;_x000D_
    border-collapse: collapse;_x000D_
    width: 100%;_x000D_
}_x000D_
table td {_x000D_
    border: 1px solid #ccc;_x000D_
}_x000D_
table .absorbing-column {_x000D_
    width: 100%;_x000D_
}

<table>_x000D_
  <thead>_x000D_
    <tr>_x000D_
      <th>Column A</th>_x000D_
      <th>Column B</th>_x000D_
      <th>Column C</th>_x000D_
      <th class="absorbing-column">Column D</th>_x000D_
    </tr>_x000D_
  </thead>_x000D_
  <tbody>_x000D_
    <tr>_x000D_
      <td>Data A.1 lorem</td>_x000D_
      <td>Data B.1 ip</td>_x000D_
      <td>Data C.1 sum l</td>_x000D_
      <td>Data D.1</td>_x000D_
    </tr>_x000D_
    <tr>_x000D_
      <td>Data A.2 ipsum</td>_x000D_
      <td>Data B.2 lorem</td>_x000D_
      <td>Data C.2 some data</td>_x000D_
      <td>Data D.2 a long line of text that is long</td>_x000D_
    </tr>_x000D_
    <tr>_x000D_
      <td>Data A.3</td>_x000D_
      <td>Data B.3</td>_x000D_
      <td>Data C.3</td>_x000D_
      <td>Data D.3</td>_x000D_
    </tr>_x000D_
  </tbody>_x000D_
</table>

As far as I know, you will not be allowed to assign string values to enum. What you can do is create a class with string constants in it.

public static class SeparatorChars
{
    public static String Comma { get { return ",";} } 
    public static String Tab { get { return "\t,";} } 
    public static String Space { get { return " ";} } 
}

You can alias both git and non-git commands. It looks like this was added in version 1.5. A snippet from the git config --help page on version 2.5.4 on my Mac shows:

If the alias expansion is prefixed with an exclamation point, it will be treated as a shell command.

For example, in your global .gitconfig file you could have:

[alias]
    st = status
    hi = !echo 'hello'

And then run them:

$ git hi
hello
$ git st
On branch master

...

Try this

spinner.postDelayed(new Runnable() {
        @Override
        public void run() {
            addListeners();
        }
    }, 1000);.o

Here, instead of making navigation bar transparent, remove any color attributes from the navigation bar to make the background visible.

Strangely, I came across this thinking that I needed a transparent color, but all I needed is to remove the color attributes.

.some-class{
    background-color: #fafafa; 
}

to

.some-class{
}

Theres a setting max_input_time (on Apache) for many webservers that defines how long they will wait for post data, regardless of the size. If this time runs out the connection is closed without even touching the php.

So your problem is not necessarily solvable with php only but you will need to change the server settings too.

Not exactly direct answer, but strongly related:

In case the resources are in a different file - for example ResourceDictionary.xaml

You can simply add x:Class to it:

<ResourceDictionary x:Class="Namespace.NewClassName"
                    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" >
    <ds:MyCollection x:Key="myKey" x:Name="myName" />
</ResourceDictionary>

And then use it in code behind:

var res = new Namespace.NewClassName();
var col = res["myKey"];

Exact same thing, just omit the -c option. Apache's docs on it here.

htpasswd /etc/apache2/.htpasswd newuser

Also, htpasswd typically isn't run as root. It's typically owned by either the web server, or the owner of the files being served. If you're using root to edit it instead of logging in as one of those users, that's acceptable (I suppose), but you'll want to be careful to make sure you don't accidentally create a file as root (and thus have root own it and no one else be able to edit it).

Download last version (not 2.5.1 or other old ones) from jmeter.apache.org

Unzip file

Ensure you install a version of JAVA which is compatible, Java 6 or 7 for JMeter 2.11

In bin folder click on jmeter.sh not on jar or execute sh ./apache-jmeter-x.x.x/bin/jmeter in the terminal.

x.x.x is the version you use.

Finally, when started you may want to select System Look and feel for Mac OSX better integration. Menu > Options > Look and Feel > System

Late answer, but I think it adds something new to this topic.

None of the previous answers has answered the original question. Some have attempted to justify the lack of a constant, while others have showed ways in which we can deal with the lack of the constant. But no one has provided a compelling justification for the benefit of the constant, so its lack is still not properly explained.

A constant would be useful because it would prevent certain code errors from going unnoticed.

Say that you have a large code base with hundreds of references to "". Someone modifies one of these while scrolling through the code and changes it to " ". Such a change would have a high chance of going unnoticed into production, at which point it might cause some issue whose source will be tricky to detect.

OTOH, a library constant named EMPTY, if subject to the same error, would generate a compiler error for something like EM PTY.

Defining your own constant is still better. Someone could still alter its initialization by mistake, but because of its wide use, the impact of such an error would be much harder to go unnoticed than an error in a single use case.

This is one of the general benefits that you get from using constants instead of literal values. People usually recognize that using a constant for a value used in dozens of places allows you to easily update that value in just one place. What is less often acknowledged is that this also prevents that value from being accidentally modified, because such a change would show everywhere. So, yes, "" is shorter than EMPTY, but EMPTY is safer to use than "".

So, coming back to the original question, we can only speculate that the language designers were probably not aware of this benefit of providing constants for literal values that are frequently used. Hopefully, we'll one day see string constants added in Java.

I use this.

public class TimeTools {

    public static Date getTaipeiNowDate() {
        Instant now = Instant.now();
        ZoneId zoneId = ZoneId.of("Asia/Taipei");
        ZonedDateTime dateAndTimeInTai = ZonedDateTime.ofInstant(now, zoneId);
        try {
            return new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").parse(dateAndTimeInTai.toString().substring(0, 19).replace("T", " "));
        } catch (ParseException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return null;
    }
}

Because Date.from(java.time.ZonedDateTime.ofInstant(now, zoneId).toInstant()); It's not work!!! If u run your application in your computer, it's not problem. But if you run in any region of AWS or Docker or GCP, it will generate problem. Because computer is not your timezone on Cloud. You should set your correctly timezone in Code. For example, Asia/Taipei. Then it will correct in AWS or Docker or GCP.

public class App {
    public static void main(String[] args) {
        Instant now = Instant.now();
        ZoneId zoneId = ZoneId.of("Australia/Sydney");
        ZonedDateTime dateAndTimeInLA = ZonedDateTime.ofInstant(now, zoneId);
        try {
            Date ans = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").parse(dateAndTimeInLA.toString().substring(0, 19).replace("T", " "));
            System.out.println("ans="+ans);
        } catch (ParseException e) {
        }
        Date wrongAns = Date.from(java.time.ZonedDateTime.ofInstant(now, zoneId).toInstant());
        System.out.println("wrongAns="+wrongAns);
    }
}

Lodash version 3.10.1

Methods compared

• _.merge(object, [sources], [customizer], [thisArg])
• _.assign(object, [sources], [customizer], [thisArg])
• _.extend(object, [sources], [customizer], [thisArg])
• _.defaults(object, [sources])
• _.defaultsDeep(object, [sources])

Similarities

• None of them work on arrays as you might expect
• _.extend is an alias for _.assign, so they are identical
• All of them seem to modify the target object (first argument)
• All of them handle null the same

Differences

• _.defaults and _.defaultsDeep processes the arguments in reverse order compared to the others (though the first argument is still the target object)
• _.merge and _.defaultsDeep will merge child objects and the others will overwrite at the root level
• Only _.assign and _.extend will overwrite a value with undefined

Tests

They all handle members at the root in similar ways.

_.assign      ({}, { a: 'a' }, { a: 'bb' }) // => { a: "bb" }
_.merge       ({}, { a: 'a' }, { a: 'bb' }) // => { a: "bb" }
_.defaults    ({}, { a: 'a' }, { a: 'bb' }) // => { a: "a"  }
_.defaultsDeep({}, { a: 'a' }, { a: 'bb' }) // => { a: "a"  }

_.assign handles undefined but the others will skip it

_.assign      ({}, { a: 'a'  }, { a: undefined }) // => { a: undefined }
_.merge       ({}, { a: 'a'  }, { a: undefined }) // => { a: "a" }
_.defaults    ({}, { a: undefined }, { a: 'bb' }) // => { a: "bb" }
_.defaultsDeep({}, { a: undefined }, { a: 'bb' }) // => { a: "bb" }

They all handle null the same

_.assign      ({}, { a: 'a'  }, { a: null }) // => { a: null }
_.merge       ({}, { a: 'a'  }, { a: null }) // => { a: null }
_.defaults    ({}, { a: null }, { a: 'bb' }) // => { a: null }
_.defaultsDeep({}, { a: null }, { a: 'bb' }) // => { a: null }

But only _.merge and _.defaultsDeep will merge child objects

_.assign      ({}, {a:{a:'a'}}, {a:{b:'bb'}}) // => { "a": { "b": "bb" }}
_.merge       ({}, {a:{a:'a'}}, {a:{b:'bb'}}) // => { "a": { "a": "a", "b": "bb" }}
_.defaults    ({}, {a:{a:'a'}}, {a:{b:'bb'}}) // => { "a": { "a": "a" }}
_.defaultsDeep({}, {a:{a:'a'}}, {a:{b:'bb'}}) // => { "a": { "a": "a", "b": "bb" }}

And none of them will merge arrays it seems

_.assign      ({}, {a:['a']}, {a:['bb']}) // => { "a": [ "bb" ] }
_.merge       ({}, {a:['a']}, {a:['bb']}) // => { "a": [ "bb" ] }
_.defaults    ({}, {a:['a']}, {a:['bb']}) // => { "a": [ "a"  ] }
_.defaultsDeep({}, {a:['a']}, {a:['bb']}) // => { "a": [ "a"  ] }

All modify the target object

a={a:'a'}; _.assign      (a, {b:'bb'}); // a => { a: "a", b: "bb" }
a={a:'a'}; _.merge       (a, {b:'bb'}); // a => { a: "a", b: "bb" }
a={a:'a'}; _.defaults    (a, {b:'bb'}); // a => { a: "a", b: "bb" }
a={a:'a'}; _.defaultsDeep(a, {b:'bb'}); // a => { a: "a", b: "bb" }

None really work as expected on arrays

Note: As @Mistic pointed out, Lodash treats arrays as objects where the keys are the index into the array.

_.assign      ([], ['a'], ['bb']) // => [ "bb" ]
_.merge       ([], ['a'], ['bb']) // => [ "bb" ]
_.defaults    ([], ['a'], ['bb']) // => [ "a"  ]
_.defaultsDeep([], ['a'], ['bb']) // => [ "a"  ]

_.assign      ([], ['a','b'], ['bb']) // => [ "bb", "b" ]
_.merge       ([], ['a','b'], ['bb']) // => [ "bb", "b" ]
_.defaults    ([], ['a','b'], ['bb']) // => [ "a", "b"  ]
_.defaultsDeep([], ['a','b'], ['bb']) // => [ "a", "b"  ]

new DecimalFormat("00.#").format(20.236)
//out =20.2

new DecimalFormat("00.#").format(2.236)
//out =02.2

1. 0 for minimum number of digits
2. Renders # digits

Try this,

if(thisSession.hasOwnProperty('merchant_id')){

}

the JS Object thisSession should be like

{
amt: "10.00",
email: "[email protected]",
merchant_id: "sam",
mobileNo: "9874563210",
orderID: "123456",
passkey: "1234"
}

you can find the details here

I just shortened the answer I selected a bit:

var selectedGroups  = new Array();
$("input[@name='user_group[]']:checked").each(function() {
    selectedGroups.push($(this).val());
});

and it works like a charm, thanks!

If a .bat file is acceptable, you can create a bat file with the same name as the DLL file (and place it in the same folder), then paste in the following content:

dotnet %~n0.dll %*

Obviously, this assumes that the machine has .NET Core installed and globally available.

c:\> "path\to\batch\file" -args blah

(This answer is derived from Chet's comment.)

I am kind of surprised that for a simple problem like this there are so many answers that are difficult to read and some, including the chosen one, do not work .

I usually want the result string to be at most maxLen characters. I also use this same function to shorten the slugs in URLs.

str.lastIndexOf(searchValue[, fromIndex]) takes a second parameter that is the index at which to start searching backwards in the string making things efficient and simple.

// Shorten a string to less than maxLen characters without truncating words.
function shorten(str, maxLen, separator = ' ') {
  if (str.length <= maxLen) return str;
  return str.substr(0, str.lastIndexOf(separator, maxLen));
}

This is a sample output:

for (var i = 0; i < 50; i += 3) 
  console.log(i, shorten("The quick brown fox jumps over the lazy dog", i));

 0 ""
 3 "The"
 6 "The"
 9 "The quick"
12 "The quick"
15 "The quick brown"
18 "The quick brown"
21 "The quick brown fox"
24 "The quick brown fox"
27 "The quick brown fox jumps"
30 "The quick brown fox jumps over"
33 "The quick brown fox jumps over"
36 "The quick brown fox jumps over the"
39 "The quick brown fox jumps over the lazy"
42 "The quick brown fox jumps over the lazy"
45 "The quick brown fox jumps over the lazy dog"
48 "The quick brown fox jumps over the lazy dog"

And for the slug:

for (var i = 0; i < 50; i += 10) 
  console.log(i, shorten("the-quick-brown-fox-jumps-over-the-lazy-dog", i, '-'));

 0 ""
10 "the-quick"
20 "the-quick-brown-fox"
30 "the-quick-brown-fox-jumps-over"
40 "the-quick-brown-fox-jumps-over-the-lazy"

You are using the correct API, but is the "marker" variable visible to the entire script. I don't see this marker variable declared globally.

It's actually the underscores. Use \_ instead, or include the underscore package.

The first thing you should check for is the file permission of /etc/ssl and /etc/ssl/certs.

I made the mistake of dropping file permissions (or blowing away the SSL rm -rf /etc/ssl/* directories) when using ssl-cert group name/ID while working on my Certificate Authority Management Tool.

It was then that I noticed the exact same error message for wget and curl CLI browser tools:

server certificate verification failed. CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none

Once I brought the /etc/ssl and /etc/ssl/cert directories' file permission up to o+rx-w, those CLI browser tools started to breath a bit easier:

mkdir -p /etc/ssl/certs
chmod u+rwx,go+rx /etc/ssl /etc/ssl/certs

I also had to recreate Java subdirectory and reconstruct the Trusted CA certificate directories:

mkdir /etc/ssl/certs/java
chmod u+rwx,go+rx /etc/ssl/certs/java
update-ca-certificates

and the coast was clear.

You can also overload the Function prototype:

// partially applies the specified arguments to a function, returning a new function
Function.prototype.curry = function( ) {
    var func = this;
    var slice = Array.prototype.slice;
    var appliedArgs = slice.call( arguments, 0 );

    return function( ) {
        var leftoverArgs = slice.call( arguments, 0 );
        return func.apply( this, appliedArgs.concat( leftoverArgs ) );
    };
};

// can do other fancy things:

// flips the first two arguments of a function
Function.prototype.flip = function( ) {
    var func = this;
    return function( ) {
        var first = arguments[0];
        var second = arguments[1];
        var rest = Array.prototype.slice.call( arguments, 2 );
        var newArgs = [second, first].concat( rest );

        return func.apply( this, newArgs );
    };
};

/*
e.g.

var foo = function( a, b, c, d ) { console.log( a, b, c, d ); }
var iAmA = foo.curry( "I", "am", "a" );
iAmA( "Donkey" );
-> I am a Donkey

var bah = foo.flip( );
bah( 1, 2, 3, 4 );
-> 2 1 3 4
*/

You might be logged in with some other GitHub credentials before. Exactly that's why this error is happening.

Usually, mac is storing your GitHub credential to the keychain access tool. Your previous git account details are there. So it is getting mismatched with your current git repo which is in other accounts.

The solution is simple and straight forward,

1. Go to keychain access in your mac.
2. On the left side under the category you can find all items. Click that.
3. Right side top search "git".
4. You will get some items regarding Github.
5. Delete all those items.

That's it, here you go.

Try to push again. It will ask you the git username and password. Your new credentials will be stored again in the keychain and your push will be done.

Hurray!

Revert back to me, If you need more help.

Thanks

train_test_split is part of the module sklearn.model_selection, hence, you may need to import the module from model_selection

Code:

from sklearn.model_selection import train_test_split

Yes, you can. Go to File -> Settings -> Editor -> Show quick documentation on mouse move

Or, in Mac OS X, go to Android Studio - > Preferences -> Editor - > General > Show quick documentation on mouse move.

It is possible to print a 15 decimal number in C++ using the following:

#include <iomanip>
#include <iostream>

cout << fixed << setprecision(15) << " The Real_Pi is: " << real_pi << endl;
cout << fixed << setprecision(15) << " My Result_Pi is: " << my_pi << endl;
cout << fixed << setprecision(15) << " Processing error is: " << Error_of_Computing << endl;
cout << fixed << setprecision(15) << " Processing time is: " << End_Time-Start_Time << endl;
_getch();

return 0;

Here is what made the error disappear for me:

Close eclipse, open up a terminal window and run:

$ mvn clean eclipse:clean eclipse:eclipse

Are you using Maven? If so,

1. Right-click on the project, Build Path and go to Configure Build Path
2. Click the libraries tab. If Maven dependencies are not in the list, you need to add it.
3. Close the dialog.

To add it: Right-click on the project, Maven → Disable Maven Nature Right-click on the project, Configure → Convert to Maven Project.

And then clean

Edit 1:

If that doesn't resolve the issue try right-clicking on your project and select properties. Select Java Build Path → Library tab. Look for a JVM. If it's not there, click to add Library and add the default JVM. If VM is there, click edit and select the default JVM. Hopefully, that works.

Edit 2:

You can also try going into the folder where you have all your projects and delete the .metadata for eclipse (be aware that you'll have to re-import all the projects afterwards! Also all the environment settings you've set would also have to be redone). After it was deleted just import the project again, and hopefully, it works.

JQuery and PHP

In PHP file "contenido.php":

<?php
$mURL = $_GET['url'];

echo file_get_contents($mURL);
?>

In html:

<script type="text/javascript" src="js/jquery/jquery.min.js"></script>
<script type="text/javascript">
    function getContent(pUrl, pDivDestino){
        var mDivDestino = $('#'+pDivDestino);

        $.ajax({
            type : 'GET',
            url : 'contenido.php',
            dataType : 'html',
            data: {
                url : pUrl
            },
            success : function(data){                                               
                mDivDestino.html(data);
            }   
        });
    }
</script>

<a href="#" onclick="javascript:getContent('http://www.google.com/', 'contenido')">Get Google</a>
<div id="contenido"></div>

Jquery like any other good JavaScript frameworks supplies you with functionality independent of browser platform wrapping all the intricacies, which you may not care about or don't want to care about.

I think using a framework is better instead of using pure JavaScript and doing all the stuff from scratch, unless you usage is very limited.

I definitely recommend JQuery!

Thanks

I decided to extend @thethakuri's answer to allow any depth for the unique member. Here's the code. This is for those who don't want to include the entire AngularUI module just for this functionality. If you're already using AngularUI, ignore this answer:

app.filter('unique', function() {
    return function(collection, primaryKey) { //no need for secondary key
      var output = [], 
          keys = [];
          var splitKeys = primaryKey.split('.'); //split by period


      angular.forEach(collection, function(item) {
            var key = {};
            angular.copy(item, key);
            for(var i=0; i<splitKeys.length; i++){
                key = key[splitKeys[i]];    //the beauty of loosely typed js :)
            }

            if(keys.indexOf(key) === -1) {
              keys.push(key);
              output.push(item);
            }
      });

      return output;
    };
});

Example

<div ng-repeat="item in items | unique : 'subitem.subitem.subitem.value'"></div>

Update your SP and handle exception in it using declare handler with get diagnostics so that you will know if there is an exception. e.g.

CREATE DEFINER=`root`@`localhost` PROCEDURE `validar_egreso`(
IN codigo_producto VARCHAR(100),
IN cantidad INT,
OUT valido INT(11)
)
BEGIN
DECLARE EXIT HANDLER FOR SQLEXCEPTION
BEGIN
    GET DIAGNOSTICS CONDITION 1
    @p1 = RETURNED_SQLSTATE, @p2 = MESSAGE_TEXT;
    SELECT @p1, @p2;
END
DECLARE resta INT(11);
SET resta = 0;

SELECT (s.stock - cantidad) INTO resta
FROM stock AS s
WHERE codigo_producto = s.codigo;

IF (resta > s.stock_minimo) THEN
    SET valido = 1;
ELSE
    SET valido = -1;
END IF;
SELECT valido;
END

There are precious few immutable collections in the current framework. I can think of one relatively pain-free option in .NET 3.5:

Use Enumerable.ToLookup() - the Lookup<,> class is immutable (but multi-valued on the rhs); you can do this from a Dictionary<,> quite easily:

    Dictionary<string, int> ids = new Dictionary<string, int> {
      {"abc",1}, {"def",2}, {"ghi",3}
    };
    ILookup<string, int> lookup = ids.ToLookup(x => x.Key, x => x.Value);
    int i = lookup["def"].Single();

You can try this code for Swift

 let popup : PopupVC = self.storyboard?.instantiateViewControllerWithIdentifier("PopupVC") as! PopupVC
 let navigationController = UINavigationController(rootViewController: popup)
 navigationController.modalPresentationStyle = UIModalPresentationStyle.OverCurrentContext
 self.presentViewController(navigationController, animated: true, completion: nil)

For swift 4 latest syntax using extension

extension UIViewController {
    func presentOnRoot(`with` viewController : UIViewController){
        let navigationController = UINavigationController(rootViewController: viewController)
        navigationController.modalPresentationStyle = UIModalPresentationStyle.overCurrentContext
        self.present(navigationController, animated: false, completion: nil)
    }
}

How to use

let popup : PopupVC = self.storyboard?.instantiateViewControllerWithIdentifier("PopupVC") as! PopupVC
self.presentOnRoot(with: popup)

You could use LoadWithPartialName. However, that is deprecated as they said.

You can indeed go along with Add-Type, and in addition to the other answers, if you don't want to specify the full path of the .dll file, you could just simply do:

Add-Type -AssemblyName "Microsoft.SqlServer.Management.SMO"

To me this returned an error, because I do not have SQL Server installed (I guess), however, with this same idea I was able to load the Windows Forms assembly:

Add-Type -AssemblyName "System.Windows.Forms"

You can find out the precise assembly name belonging to the particular class on the MSDN site:

I got some ideas from this post a few months back, but none of the answers here, nor answers from other posts/blogs could handle all the scenarios (e.g. negative numbers and some "lucky numbers" our tester found). In the end, our tester did not find any problem with this method below. Pasting a snippet of my code:

fixPrecision: function (value) {
    var me = this,
        nan = isNaN(value),
        precision = me.decimalPrecision;

    if (nan || !value) {
        return nan ? '' : value;
    } else if (!me.allowDecimals || precision <= 0) {
        precision = 0;
    }

    //[1]
    //return parseFloat(Ext.Number.toFixed(parseFloat(value), precision));
    precision = precision || 0;
    var negMultiplier = value < 0 ? -1 : 1;

    //[2]
    var numWithExp = parseFloat(value + "e" + precision);
    var roundedNum = parseFloat(Math.round(Math.abs(numWithExp)) + 'e-' + precision) * negMultiplier;
    return parseFloat(roundedNum.toFixed(precision));
},

I also have code comments (sorry i forgot all the details already)...I'm posting my answer here for future reference:

9.995 * 100 = 999.4999999999999
Whereas 9.995e2 = 999.5
This discrepancy causes Math.round(9.995 * 100) = 999 instead of 1000.
Use e notation instead of multiplying /dividing by Math.Pow(10,precision).

The drawPolygon function below can be used to draw any polygon with rounded corners.

See it running here.

function drawPolygon(ctx, pts, radius) {
  if (radius > 0) {
    pts = getRoundedPoints(pts, radius);
  }
  var i, pt, len = pts.length;
  ctx.beginPath();
  for (i = 0; i < len; i++) {
    pt = pts[i];
    if (i == 0) {          
      ctx.moveTo(pt[0], pt[1]);
    } else {
      ctx.lineTo(pt[0], pt[1]);
    }
    if (radius > 0) {
      ctx.quadraticCurveTo(pt[2], pt[3], pt[4], pt[5]);
    }
  }
  ctx.closePath();
}

function getRoundedPoints(pts, radius) {
  var i1, i2, i3, p1, p2, p3, prevPt, nextPt,
      len = pts.length,
      res = new Array(len);
  for (i2 = 0; i2 < len; i2++) {
    i1 = i2-1;
    i3 = i2+1;
    if (i1 < 0) {
      i1 = len - 1;
    }
    if (i3 == len) {
      i3 = 0;
    }
    p1 = pts[i1];
    p2 = pts[i2];
    p3 = pts[i3];
    prevPt = getRoundedPoint(p1[0], p1[1], p2[0], p2[1], radius, false);
    nextPt = getRoundedPoint(p2[0], p2[1], p3[0], p3[1], radius, true);
    res[i2] = [prevPt[0], prevPt[1], p2[0], p2[1], nextPt[0], nextPt[1]];
  }
  return res;
};

function getRoundedPoint(x1, y1, x2, y2, radius, first) {
  var total = Math.sqrt(Math.pow(x2 - x1, 2) + Math.pow(y2 - y1, 2)),
      idx = first ? radius / total : (total - radius) / total;
  return [x1 + (idx * (x2 - x1)), y1 + (idx * (y2 - y1))];
};

The function receives an array with the polygon points, like this:

var canvas = document.getElementById("cv");
var ctx = canvas.getContext("2d");
ctx.strokeStyle = "#000000";
ctx.lineWidth = 5;

drawPolygon(ctx, [[20,   20],
                  [120,  20],
                  [120, 120],
                  [ 20, 120]], 10);
ctx.stroke();

This is a port and a more generic version of a solution posted here.

Simple and effective solution is

<form ... onsubmit="myButton.disabled = true; return true;">
    ...
    <input type="submit" name="myButton" value="Submit">
</form>

Source: here

Could it be more useful for you to use the length of the list len(n) to inform your decision rather than checking n[i] for each possible length?

solution with fontawesome

#polyNedir ul li { position:relative;padding-left:20px }
#polyNedir ul li:after{font-family:fontawesome;content:'\f111';position:absolute;left:0px;top:3px;color:#fff;font-size:10px;}

To answer your question:

If we can have inner private class then why can't we have outer private class...?

You can, the distinction is that the inner class is at the "class" access level, whereas the "outer" class is at the "package" access level. From the Oracle Tutorials:

If a class has no modifier (the default, also known as package-private), it is visible only within its own package (packages are named groups of related classes — you will learn about them in a later lesson.)

Thus, package-private (declaring no modifier) is the effect you would expect from declaring an "outer" class private, the syntax is just different.

Set this as your view background

<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="oval">
    <stroke
        android:width="1dp"
        android:color="#78d9ff"/>
</shape>

For solid circle use:

<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="oval">
    <solid
        android:color="#48b3ff"/>
</shape>

Solid with stroke:

<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="oval">
    <solid android:color="#199fff"/>
    <stroke
        android:width="2dp"
        android:color="#444444"/>
</shape>

Note: To make the oval shape appear as a circle, in these examples, either your view that you are using this shape as its background should be a square or you have to set the height and width properties of the shape tag to an equal value.

The port that the Admin button references is configurable. In the XAMPP install folder there is a xampp-control.ini file. Changing the Apache entry under [ServicePorts] will affect the url the Admin button opens.

[ServicePorts]
Apache=8080

Basically yes, JSON is just a javascript literal representation of your value so what you said is correct.

You can find a pretty clear and good explanation of JSON notation on http://json.org/

For Linux users, check the value of GIT_HOME in your .env file in the home directory.

1. Open terminal
2. Type cd home/<username>/
3. Open the .env file and check the value of GIT_HOME and select the git path appropriately

PS: If you are not able to find the .env file, click on View on the formatting tool bar, select Show hidden files. You should be able to find the .env file now.

I compiled and run my code. This is accurate code. You can try it your own.

data = pd.read_excel('file.xlsx')

If you have any special character or space in column name you can write it in '' like in the given code:

data = data[data['expire/t'].notnull()]
print (date)

If there is just a single string column name without any space or special character you can directly access it.

data = data[data.expire ! = 0]
print (date)

I had a similar problem (using 3.5) and lost 1/2 a day to it but here is a something that works - I am retired and just learning Python so I can help my grandson (12) with it.

mydict2={'Atlanta':78,'Macon':85,'Savannah':72}
maxval=(max(mydict2.values()))
print(maxval)
mykey=[key for key,value in mydict2.items()if value==maxval][0]
print(mykey)
YEILDS; 
85
Macon

That response is a Map, with a single element with key '212315952136472'. There's no 'data' key in the Map. If you want to loop through all entries, use something like this:

JSONObject userJson = JSON.parse(jsonResponse)
userJson.each { id, data -> println data.link }

If you know it's a single-element Map then you can directly access the link:

def data = userJson.values().iterator().next()
String link = data.link

And if you knew the id (e.g. if you used it to make the request) then you can access the value more concisely:

String id = '212315952136472'
...
String link = userJson[id].link

Running the command prompt or Powershell ISE as an administrator fixed this for me.

Hmm, I would use

window.location = 'http://localhost/index.html#?options=go_here';

I'm not exactly sure if that is what you mean.

Instead of using http GET, use http POST. And JSON. Or XML

This is how your request stream to the server would look like.

POST /appointments HTTP/1.0
Content-Type: application/json
Content-Length: (calculated by your utility)

{users: [user:{id:id1}, user:{id:id2}]}

Or in XML,

POST /appointments HTTP/1.0
Content-Type: application/json
Content-Length: (calculated by your utility)

<users><user id='id1'/><user id='id2'/></users>

You could certainly continue using GET as you have proposed, as it is certainly simpler.

/appointments?users=1d1,1d2

Which means you would have to keep your data structures very simple.

However, if/when your data structure gets more complex, http GET and without JSON, your programming and ability to recognise the data gets very difficult.

Therefore,unless you could keep your data structure simple, I urge you adopt a data transfer framework. If your requests are browser based, the industry usual practice is JSON. If your requests are server-server, than XML is the most convenient framework.

JQuery

If your client is a browser and you are not using GWT, you should consider using jquery REST. Google on RESTful services with jQuery.

Not sure it stands for anything special. It's just a convention that you supply an 'all' rule, and generally it's used to list all the sub-targets needed to build the entire project, hence the name 'all'. The only thing special about it is that often times people will put it in as the first target in the makefile, which means that just typing 'make' alone will do the same thing as 'make all'.

This is another option to write a pandas dataframe directly into a matplotlib table:

import numpy as np
import pandas as pd
import matplotlib.pyplot as plt

fig, ax = plt.subplots()

# hide axes
fig.patch.set_visible(False)
ax.axis('off')
ax.axis('tight')

df = pd.DataFrame(np.random.randn(10, 4), columns=list('ABCD'))

ax.table(cellText=df.values, colLabels=df.columns, loc='center')

fig.tight_layout()

plt.show()

I'm not sure what you mean by "myself".

Any JavaScript function can be called by an event, but you must have some sort of event to trigger it.

e.g. On page load:

<body onload="myfunction();">

Or on mouseover:

<table onmouseover="myfunction();">

As a result the first question is, "What do you want to do to cause the function to execute?"

After you determine that it will be much easier to give you a direct answer.

In my case it was due to 'lower_case_table_names' parameter.

The error number 39 thrown out when I tried to drop the databases which consists upper case table names with lower_case_table_names parameter is enabled.

This is fixed by reverting back the lower case parameter changes to the previous state.

This is the command for the batch file and it can run the vbscript.

C:\Windows\SysWOW64\cmd.exe /c cscript C:\Windows\SysWOW64\...\necdaily.vbs

pack_forget and grid_forget will only remove widgets from view, it doesn't destroy them. If you don't plan on re-using the widgets, your only real choice is to destroy them with the destroy method.

To do that you have two choices: destroy each one individually, or destroy the frame which will cause all of its children to be destroyed. The latter is generally the easiest and most effective.

Since you claim you don't want to destroy the container frame, create a secondary frame. Have this secondary frame be the container for all the widgets you want to delete, and then put this one frame inside the parent you do not want to destroy. Then, it's just a matter of destroying this one frame and all of the interior widgets will be destroyed along with it.

I contend that images (files) are NOT usually stored in a database base64 encoded. Instead, they are stored in their raw binary form in a binary (blob) column (or file).

Base64 is only used as a transport mechanism, not for storage. For example, you can embed a base64 encoded image into an XML document or an email message.

Base64 is also stream friendly. You can encode and decode on the fly (without knowing the total size of the data).

While base64 is fine for transport, do not store your images base64 encoded.

Base64 provides no checksum or anything of any value for storage.

Base64 encoding increases the storage requirement by 33% over a raw binary format. It also increases the amount of data that must be read from persistent storage, which is still generally the largest bottleneck in computing. It's generally faster to read less bytes and encode them on the fly. Only if your system is CPU bound instead of IO bound, and you're regularly outputting the image in base64, then consider storing in base64.

Inline images (base64 encoded images embedded in HTML) are a bottleneck themselves--you're sending 33% more data over the wire, and doing it serially (the web browser has to wait on the inline images before it can finish downloading the page HTML).

If you still wish to store images base64 encoded, please, whatever you do, make sure you don't store base64 encoded data in a UTF8 column then index it.

Use a dot or a pipe as the field separator:

awk -v FS='[.|]' '{
    printf "%s%s %s.%s\n", toupper(substr($4,1,1)), substr($4,2), $1, $2
}' << END
[email protected]|com.emailclient.account
[email protected]|com.socialsite.auth.account
END

gives:

Emailclient [email protected]
Socialsite [email protected]

-if gradle.properties not available then first add that file and add android.useDeprecatedNdk=true

-use this code in build.gradle

defaultConfig {
    applicationId 'com.example.application'
    minSdkVersion 16
    targetSdkVersion 21
    versionCode 11
    versionName "1.1"
    ndk {
        abiFilters "armeabi"
    }
}

`

Every service that is bound in activity must be unbind on app close.

So try using

 onPause(){
   unbindService(YOUR_SERVICE);
   super.onPause();
 }

Quick Solution

tarxz() { tar cf - "$1" | xz -4e > "$1".tar.xz ; }
tarxz name_of_directory

(Notice, not name_of_directory/)

Using xz compression options

If you want to use compression options for xz, or if you are using tar on MacOS, you probably want to avoid the tar -cJf syntax.

According to man xz, the way to do this is:

tar cf - filename | xz -4e > filename.tar.xz

Because I liked Wojciech Adam Koszek's format, but not information:

1. c creates a new archive for the specified files.
2. f reads from a directory (best to put this second because -cf != -fc)
3. - outputs to Standard Output
4. | pipes output to the next command
5. xz -4e calls xz with the -4e compression option. (equal to -4 --extreme)
6. > filename.tar.xz directs the tarred and compressed file to filename.tar.xz

where -4e is, use your own compression options. I often use -k to --keep the original file and -9 for really heavy compression. -z to manually set xz to zip, though it defaults to zipping if not otherwise directed.

To uncompress and untar

To echo Rafael van Horn, to uncompress & untar (see note below):

xz -dc filename.tar.xz | tar x

Note: unlike Rafael's answer, use xz -dc instead of catxz. The docs recommend this in case you are using this for scripting. Best to have a habit of using -d or --decompress instead of unxz as well. However, if you must, using those commands from the command line is fine.

You mean you have a string of bytes in my_hex which you want to print out as hex numbers, right? E.g., let's take your example:

>>> my_string = "deadbeef"
>>> my_hex = my_string.decode('hex')  # python 2 only
>>> print my_hex
Þ ­ ¾ ï

This construction only works on Python 2; but you could write the same string as a literal, in either Python 2 or Python 3, like this:

my_hex = "\xde\xad\xbe\xef"

So, to the answer. Here's one way to print the bytes as hex integers:

>>> print " ".join(hex(ord(n)) for n in my_hex)
0xde 0xad 0xbe 0xef

The comprehension breaks the string into bytes, ord() converts each byte to the corresponding integer, and hex() formats each integer in the from 0x##. Then we add spaces in between.

Bonus: If you use this method with unicode strings (or Python 3 strings), the comprehension will give you unicode characters (not bytes), and you'll get the appropriate hex values even if they're larger than two digits.

Addendum: Byte strings

In Python 3 it is more likely you'll want to do this with a byte string; in that case, the comprehension already returns ints, so you have to leave out the ord() part and simply call hex() on them:

>>> my_hex = b'\xde\xad\xbe\xef'
>>> print(" ".join(hex(n) for n in my_hex))
0xde 0xad 0xbe 0xef

I'll give an example to make it clearer:

• x: input image of shape [2, 3], 1 channel
• valid_pad: max pool with 2x2 kernel, stride 2 and VALID padding.
• same_pad: max pool with 2x2 kernel, stride 2 and SAME padding (this is the classic way to go)

The output shapes are:

• valid_pad: here, no padding so the output shape is [1, 1]
• same_pad: here, we pad the image to the shape [2, 4] (with -inf and then apply max pool), so the output shape is [1, 2]

x = tf.constant([[1., 2., 3.],
                 [4., 5., 6.]])

x = tf.reshape(x, [1, 2, 3, 1])  # give a shape accepted by tf.nn.max_pool

valid_pad = tf.nn.max_pool(x, [1, 2, 2, 1], [1, 2, 2, 1], padding='VALID')
same_pad = tf.nn.max_pool(x, [1, 2, 2, 1], [1, 2, 2, 1], padding='SAME')

valid_pad.get_shape() == [1, 1, 1, 1]  # valid_pad is [5.]
same_pad.get_shape() == [1, 1, 2, 1]   # same_pad is  [5., 6.]

Worked for me perfectly as this:

Trims all selected cells. Beware of selecting full columns/rows :P.

Sub TrimSelected()    
Dim rng As Range, cell As Range    
Set rng = Selection   

For Each cell In rng    
cell = Trim(cell)   

Next cell    

End Sub

Try opening the localhost in your browser. Just type: localhost:3000 in the address bar.

If the app opens-up, it means your previous npm run is still active. Now, you can just make changes to the code and see the effects if you are designing the same app, or if you wanna run another app, just tweak the code (in index.js of previously running app) a little-bit and (probably refresh the browser tab) to make it crash ;)..... Now go run npm run start again from your new app directory. Hope this helps! :)

or

You can open the Task Manager (WINDOWS_KEY+X > Task Manager) and you'll see the "Node.js:Server-side JavaScript" row. Select that and end task....It should work now!!

If not, change the .env file of your app to include port:3002 and run the new app. This will allow you to run two separate apps on different ports. Cheers!!

Try jcabi-http, which is a fluent Java HTTP client, for example:

String html = new JdkRequest("https://www.google.com")
  .header(HttpHeaders.ACCEPT, MediaType.TEXT_HTML)
  .fetch()
  .as(HttpResponse.class)
  .assertStatus(HttpURLConnection.HTTP_OK)
  .body();

Check also this blog post: http://www.yegor256.com/2014/04/11/jcabi-http-intro.html

If you are using a data source, here's another way to do it without code behind.

Note the following key points:

• The ListItem of Value="0" is on the source page, not added in code
• The ListItem in the source will be overwritten if you don't include AppendDataBoundItems="true" in the DropDownList
• InitialValue="0" tells the validator that this is the value that should fire that validator (as pointed out in other answers)

Example:

<asp:DropDownList ID="ddlType" runat="server" DataSourceID="sdsType"
                  DataValueField="ID" DataTextField="Name" AppendDataBoundItems="true">
    <asp:ListItem Value="0" Text="--Please Select--" Selected="True"></asp:ListItem>
</asp:DropDownList>
<asp:RequiredFieldValidator ID="rfvType" runat="server" ControlToValidate="ddlType" 
                            InitialValue="0" ErrorMessage="Type required"></asp:RequiredFieldValidator>
<asp:SqlDataSource ID="sdsType" runat="server" 
                   ConnectionString='<%$ ConnectionStrings:TESTConnectionString %>'
                   SelectCommand="SELECT ID, Name FROM Type"></asp:SqlDataSource>

I've found an interesting way to solve this using only jQuery:

$("#element1").before($("#element2"));

or

$("#element1").after($("#element2"));

:)

Just for the reason of documentation:

I have now (2014) observed that from all these valuable and correct approaches only one was successful. I've added a function to the WSDL on the server, and the client wasn't recognizing the new function.

• Adding WSDL_CACHE_NONE to the parameters didn't help.
• Adding the cache-buster didn't help.
• Setting soap.wsdl_cache_enabled to the PHP ini helped.

I am now unsure if it is the combination of all three, or if some features are terribly implemented so they may remain useless randomly, or if there is some hierarchy of features not understood.

So finally, expect that you have to check all three to solve problems like these.

Like others mentioned, CPython can use threads only for I/O waits due to GIL.

If you want to benefit from multiple cores for CPU-bound tasks, use multiprocessing:

from multiprocessing import Process

def f(name):
    print 'hello', name

if __name__ == '__main__':
    p = Process(target=f, args=('bob',))
    p.start()
    p.join()

Another way to solve this problem is to install the missing libs that you need.

You can download the libs and see how to install here.

   // Do you want to download an image?
   // But are u denied access?
   // well here is the solution.

    public static void DownloadImage(String search, String path) {

    // This will get input data from the server
    InputStream inputStream = null;

    // This will read the data from the server;
    OutputStream outputStream = null;

    try {
        // This will open a socket from client to server
        URL url = new URL(search);

       // This user agent is for if the server wants real humans to visit
        String USER_AGENT = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36";

       // This socket type will allow to set user_agent
        URLConnection con = url.openConnection();

        // Setting the user agent
        con.setRequestProperty("User-Agent", USER_AGENT);

        // Requesting input data from server
        inputStream = con.getInputStream();

        // Open local file writer
        outputStream = new FileOutputStream(path);

        // Limiting byte written to file per loop
        byte[] buffer = new byte[2048];

        // Increments file size
        int length;

        // Looping until server finishes
        while ((length = inputStream.read(buffer)) != -1) {
            // Writing data
            outputStream.write(buffer, 0, length);
        }
    } catch (Exception ex) {
        Logger.getLogger(WebCrawler.class.getName()).log(Level.SEVERE, null, ex);
     }

     // closing used resources
     // The computer will not be able to use the image
     // This is a must

     outputStream.close();
     inputStream.close();
}

Just see the below code snippet if you are implementing a REST API through express and mongoose. (Example for ADD)

...._x000D_
exports.AddSomething = (req,res,next) =>{_x000D_
  const newSomething = new SomeEntity({_x000D_
 _id:new mongoose.Types.ObjectId(), //its very own ID_x000D_
  somethingName:req.body.somethingName,_x000D_
  theForeignKey: mongoose.Types.ObjectId(req.body.theForeignKey)// if you want to pass an object ID_x000D_
})_x000D_
}_x000D_
...

Hope it Helps

Since this is a popular error, check out the PHPMailer Wiki on troubleshooting.

Also this worked for me

$mailer->Port = '587';

Assuming MySQL (EDIT: posted before the SQL variant was supplied):

ALTER TABLE myTable ADD myNewColumn VARCHAR(255) AFTER myOtherColumn

The AFTER keyword tells MySQL where to place the new column. You can also use FIRST to flag the new column as the first column in the table.

If you want the ASCII value of all the characters in a String. You can use this :

String a ="asdasd";
int count =0;
for(int i : a.toCharArray())
    count+=i;

and if you want ASCII of a single character in a String you can go for :

(int)a.charAt(index);

You should probably use the ngHref directive along with the ngClick:

 <a ng-href='#here' ng-click='go()' >click me</a>

Here is an example: http://plnkr.co/edit/FSH0tP0YBFeGwjIhKBSx?p=preview

<body ng-controller="MainCtrl">
    <p>Hello {{name}}!</p>
    {{msg}}
    <a ng-href='#here' ng-click='go()' >click me</a>
    <div style='height:1000px'>

      <a id='here'></a>

    </div>
     <h1>here</h1>
  </body>

var app = angular.module('plunker', []);

app.controller('MainCtrl', function($scope) {
  $scope.name = 'World';

  $scope.go = function() {

    $scope.msg = 'clicked';
  }
});

I don't know if this will work with the library you are using but it will at least let you link and use the ngClick function.

** Update **

Here is a demo of the set and get working fine with a service.

http://plnkr.co/edit/FSH0tP0YBFeGwjIhKBSx?p=preview

var app = angular.module('plunker', []);

app.controller('MainCtrl', function($scope, sharedProperties) {
  $scope.name = 'World';

  $scope.go = function(item) {
    sharedProperties.setListName(item);


  }

  $scope.getItem = function() {

    $scope.msg = sharedProperties.getListName();
  }
});

app.service('sharedProperties', function () {
    var list_name = '';

    return {

        getListName: function() {
            return list_name;
        },
        setListName: function(name) {
            list_name = name;
        }
    };


});

* Edit *

Please review https://github.com/centralway/lungo-angular-bridge which talks about how to use lungo and angular. Also note that if your page is completely reloading when browsing to another link, you will need to persist your shared properties into localstorage and/or a cookie.

Please change your code as follows:

<script>
    var button = document.getElementById("reactionTester");
    var start = document.getElementById("start");
    function init() {
        var startInterval/*in milliseconds*/ = Math.floor(Math.random()*30)*1000;
        setTimeout(startTimer,startInterval); 
    }
    function startTimer(){
        document.write("hey");
    }
</script>

See if that helps. Basically, the difference is references the 'startTimer' function instead of executing it.

The essential difference between /* and / is that a servlet with mapping /* will be selected before any servlet with an extension mapping (like *.html), while a servlet with mapping / will be selected only after extension mappings are considered (and will be used for any request which doesn't match anything else---it is the "default servlet").

In particular, a /* mapping will always be selected before a / mapping. Having either prevents any requests from reaching the container's own default servlet.

Either will be selected only after servlet mappings which are exact matches (like /foo/bar) and those which are path mappings longer than /* (like /foo/*). Note that the empty string mapping is an exact match for the context root (http://host:port/context/).

See Chapter 12 of the Java Servlet Specification, available in version 3.1 at http://download.oracle.com/otndocs/jcp/servlet-3_1-fr-eval-spec/index.html.

You can also define a variable without the EnvInject Plugin within your Groovy System Script:

import hudson.model.*
def build = Thread.currentThread().executable
def pa = new ParametersAction([
  new StringParameterValue("FOO", "BAR")
])
build.addAction(pa)

Then you can access this variable in the next build step which (for example) is an windows batch command:

@echo off
Setlocal EnableDelayedExpansion
echo FOO=!FOO!

This echo will show you "FOO=BAR".

Regards

Thought this might be handy for others. Knowing regex is useful, kids. Stay in school.

Edit: Turned it into a handy dandy function!

let specificStatusCodeMappings = {
    '1000': 'Normal Closure',
    '1001': 'Going Away',
    '1002': 'Protocol Error',
    '1003': 'Unsupported Data',
    '1004': '(For future)',
    '1005': 'No Status Received',
    '1006': 'Abnormal Closure',
    '1007': 'Invalid frame payload data',
    '1008': 'Policy Violation',
    '1009': 'Message too big',
    '1010': 'Missing Extension',
    '1011': 'Internal Error',
    '1012': 'Service Restart',
    '1013': 'Try Again Later',
    '1014': 'Bad Gateway',
    '1015': 'TLS Handshake'
};

function getStatusCodeString(code) {
    if (code >= 0 && code <= 999) {
        return '(Unused)';
    } else if (code >= 1016) {
        if (code <= 1999) {
            return '(For WebSocket standard)';
        } else if (code <= 2999) {
            return '(For WebSocket extensions)';
        } else if (code <= 3999) {
            return '(For libraries and frameworks)';
        } else if (code <= 4999) {
            return '(For applications)';
        }
    }
    if (typeof(specificStatusCodeMappings[code]) !== 'undefined') {
        return specificStatusCodeMappings[code];
    }
    return '(Unknown)';
}

Usage:

getStatusCodeString(1006); //'Abnormal Closure'

{
    '0-999': '(Unused)',
    '1016-1999': '(For WebSocket standard)',
    '2000-2999': '(For WebSocket extensions)',
    '3000-3999': '(For libraries and frameworks)',
    '4000-4999': '(For applications)'
}

{
    '1000': 'Normal Closure',
    '1001': 'Going Away',
    '1002': 'Protocol Error',
    '1003': 'Unsupported Data',
    '1004': '(For future)',
    '1005': 'No Status Received',
    '1006': 'Abnormal Closure',
    '1007': 'Invalid frame payload data',
    '1008': 'Policy Violation',
    '1009': 'Message too big',
    '1010': 'Missing Extension',
    '1011': 'Internal Error',
    '1012': 'Service Restart',
    '1013': 'Try Again Later',
    '1014': 'Bad Gateway',
    '1015': 'TLS Handshake'
}

Source (with minor edits for terseness): https://developer.mozilla.org/en-US/docs/Web/API/CloseEvent#Status_codes

It amazes me that this simple answer did not occur in the previous answers.

In my viewpoint, the easiest way to print a string on multiple lines, is the following :

print("Random String \n" * 100), where 100 stands for the number of lines to be printed.

use min rule

set first option value to 0

'selectName':{min:1}

As said in previous answers the 'normal' way is to add it to a JScrollPane, but sometimes you don't want it to scroll (don't ask me when:)). Then you can add the TableHeader yourself. Like this:

JPanel tablePanel = new JPanel(new BorderLayout());
JTable table = new JTable();
tablePanel.add(table, BorderLayout.CENTER);
tablePanel.add(table.getTableHeader(), BorderLayout.NORTH);

This worked for me: Type npm audit fix in the commandline. Afterwards I was able to use ng serve --open again.

Everyone's mentioned the ready function (and its shortcuts), but even earlier than that, you can just put code in a script tag just before the closing body tag (this is what the YUI and Google Closure folks recommend), like this:

<script type='text/javascript'>
pageLoad();
</script>
</body>

At this point, everything above that script tag is available in the DOM.

So your options in order of occurrence:

1. Earliest: Function call in script tag just before closing the body tag. The DOM is ready at this point (according to the Google Closure folks, and they should know; I've also tested it on a bunch of browsers).

2. Earlyish: the jQuery.ready callback (and its shortcut forms).

3. Late, after all page elements including images are fully loaded: window onload event.

Here's a live example: http://jsbin.com/icazi4, relevant extract:

</body>
<script type='text/javascript'>
  runPage();

  jQuery(function() {
    display("From <tt>jQuery.ready</tt> callback.");
  });

  $(window).load(function() {
    display("From <tt>window.onload</tt> callback.");
  });

  function runPage() {
    display("From function call at end of <tt>body</tt> tag.");
  }

  function display(msg) {
    var p = document.createElement('p');
    p.innerHTML = msg;
    document.body.appendChild(p);
  }
</script>

(Yes, I could have used jQuery for the display function, but I was starting with a non-jQuery template.)

public class Shift {
 public static void main(String[] args) {
  Byte b = Byte.parseByte("00101011",2);
  System.out.println(b);
  byte val = b.byteValue();
  Byte shifted = new Byte((byte) (val >> 2));
  System.out.println(shifted);

  // often overloked  are the methods of Integer

  int i = Integer.parseInt("00101011",2);
  System.out.println( Integer.toBinaryString(i));
  i >>= 2;
  System.out.println( Integer.toBinaryString(i));
 }
}

Output:

43
10
101011
1010

For MySql WorkBench, Please use below :

update emp as a
inner join department b on a.department_id=b.id
set a.department_name=b.name
where a.emp_id in (10,11,12); 

An IEEE double has 53 significant bits (that's the value of DBL_MANT_DIG in <cfloat>). That's approximately 15.95 decimal digits (log10(2⁵³)); the implementation sets DBL_DIG to 15, not 16, because it has to round down. So you have nearly an extra decimal digit of precision (beyond what's implied by DBL_DIG==15) because of that.

The nextafter() function computes the nearest representable number to a given number; it can be used to show just how precise a given number is.

This program:

#include <cstdio>
#include <cfloat>
#include <cmath>

int main() {
    double x = 1.0/7.0;
    printf("FLT_RADIX = %d\n", FLT_RADIX);
    printf("DBL_DIG = %d\n", DBL_DIG);
    printf("DBL_MANT_DIG = %d\n", DBL_MANT_DIG);
    printf("%.17g\n%.17g\n%.17g\n", nextafter(x, 0.0), x, nextafter(x, 1.0));
}

gives me this output on my system:

FLT_RADIX = 2
DBL_DIG = 15
DBL_MANT_DIG = 53
0.14285714285714282
0.14285714285714285
0.14285714285714288

(You can replace %.17g by, say, %.64g to see more digits, none of which are significant.)

As you can see, the last displayed decimal digit changes by 3 with each consecutive value. The fact that the last displayed digit of 1.0/7.0 (5) happens to match the mathematical value is largely coincidental; it was a lucky guess. And the correct rounded digit is 6, not 5. Replacing 1.0/7.0 by 1.0/3.0 gives this output:

FLT_RADIX = 2
DBL_DIG = 15
DBL_MANT_DIG = 53
0.33333333333333326
0.33333333333333331
0.33333333333333337

which shows about 16 decimal digits of precision, as you'd expect.

The most upvoted answer can be improved.

Let me refer to GNU Make manual "Setting variables" and "Flavors", and add some comments.

Recursively expanded variables

The value you specify is installed verbatim; if it contains references to other variables, these references are expanded whenever this variable is substituted (in the course of expanding some other string). When this happens, it is called recursive expansion.

foo = $(bar)

The catch: foo will be expanded to the value of $(bar) each time foo is evaluated, possibly resulting in different values. Surely you cannot call it "lazy"! This can surprise you if executed on midnight:

# This variable is haunted!
WHEN = $(shell date -I)

something:
    touch $(WHEN).flag

# If this is executed on 00:00:00:000, $(WHEN) will have a different value!
something-else-later: something
    test -f $(WHEN).flag || echo "Boo!"

Simply expanded variable

VARIABLE := value
VARIABLE ::= value

Variables defined with ‘:=’ or ‘::=’ are simply expanded variables.

Simply expanded variables are defined by lines using ‘:=’ or ‘::=’ [...]. Both forms are equivalent in GNU make; however only the ‘::=’ form is described by the POSIX standard [...] 2012.

The value of a simply expanded variable is scanned once and for all, expanding any references to other variables and functions, when the variable is defined.

Not much to add. It's evaluated immediately, including recursive expansion of, well, recursively expanded variables.

The catch: If VARIABLE refers to ANOTHER_VARIABLE:

VARIABLE := $(ANOTHER_VARIABLE)-yohoho

and ANOTHER_VARIABLE is not defined before this assignment, ANOTHER_VARIABLE will expand to an empty value.

Assign if not set

FOO ?= bar

is equivalent to

ifeq ($(origin FOO), undefined)
FOO = bar
endif

where $(origin FOO) equals to undefined only if the variable was not set at all.

The catch: if FOO was set to an empty string, either in makefiles, shell environment, or command line overrides, it will not be assigned bar.

Appending

VAR += bar

Appending:

When the variable in question has not been defined before, ‘+=’ acts just like normal ‘=’: it defines a recursively-expanded variable. However, when there is a previous definition, exactly what ‘+=’ does depends on what flavor of variable you defined originally.

So, this will print foo bar:

VAR = foo
# ... a mile of code
VAR += $(BAR)
BAR = bar
$(info $(VAR))

but this will print foo:

VAR := foo
# ... a mile of code
VAR += $(BAR)
BAR = bar
$(info $(VAR))

The catch is that += behaves differently depending on what type of variable VAR was assigned before.

Multiline values

The syntax to assign multiline value to a variable is:

define VAR_NAME :=
line
line
endef

or

define VAR_NAME =
line
line
endef

Assignment operator can be omitted, then it creates a recursively-expanded variable.

define VAR_NAME
line
line
endef

The last newline before endef is removed.

Bonus: the shell assignment operator ‘!=’

 HASH != printf '\043'

is the same as

HASH := $(shell printf '\043')

Don't use it. $(shell) call is more readable, and the usage of both in a makefiles is highly discouraged. At least, $(shell) follows Joel's advice and makes wrong code look obviously wrong.

As you state JPA is just a specification, meaning there is no implementation. You can annotate your classes as much as you would like with JPA annotations, however without an implementation nothing will happen. Think of JPA as the guidelines that must be followed or an interface, while Hibernate's JPA implementation is code that meets the API as defined by the JPA specification and provides the under the hood functionality.

When you use Hibernate with JPA you are actually using the Hibernate JPA implementation. The benefit of this is that you can swap out Hibernate's implementation of JPA for another implementation of the JPA specification. When you use straight Hibernate you are locking into the implementation because other ORMs may use different methods/configurations and annotations, therefore you cannot just switch over to another ORM.

For a more detailed description read my blog entry.

This gives you just the revision.

git rev-parse HEAD

FAST "FROM" AND "TO" METHODS

I am late to the party, but I compounded previous answers and improved over them. I think these two methods are faster than any others posted so far. I was able to convert 1,000,000 numbers from and to base 36 in under 400ms in a single core machine.

Example below is for base 62. Change the BaseChars array to convert from and to any other base.

private static readonly char[] BaseChars = 
         "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz".ToCharArray();
private static readonly Dictionary<char, int> CharValues = BaseChars
           .Select((c,i)=>new {Char=c, Index=i})
           .ToDictionary(c=>c.Char,c=>c.Index);

public static string LongToBase(long value)
{
   long targetBase = BaseChars.Length;
   // Determine exact number of characters to use.
   char[] buffer = new char[Math.Max( 
              (int) Math.Ceiling(Math.Log(value + 1, targetBase)), 1)];

   var i = buffer.Length;
   do
   {
       buffer[--i] = BaseChars[value % targetBase];
       value = value / targetBase;
   }
   while (value > 0);

   return new string(buffer, i, buffer.Length - i);
}

public static long BaseToLong(string number) 
{ 
    char[] chrs = number.ToCharArray(); 
    int m = chrs.Length - 1; 
    int n = BaseChars.Length, x;
    long result = 0; 
    for (int i = 0; i < chrs.Length; i++)
    {
        x = CharValues[ chrs[i] ];
        result += x * (long)Math.Pow(n, m--);
    }
    return result;  
} 

EDIT (2018-07-12)

Fixed to address the corner case found by @AdrianBotor (see comments) converting 46655 to base 36. This is caused by a small floating-point error calculating Math.Log(46656, 36) which is exactly 3, but .NET returns 3 + 4.44e-16, which causes an extra character in the output buffer.

Put the select statement in a dynamic PL/SQL block.

CREATE OR REPLACE FUNCTION get_num_of_employees (p_loc VARCHAR2, p_job VARCHAR2) 
RETURN NUMBER
IS
  v_query_str VARCHAR2(1000);
  v_num_of_employees NUMBER;
BEGIN
  v_query_str := 'begin SELECT COUNT(*) INTO :into_bind FROM emp_' 
                 || p_loc
                 || ' WHERE job = :bind_job; end;';
  EXECUTE IMMEDIATE v_query_str
    USING out v_num_of_employees, p_job;
  RETURN v_num_of_employees;
END;
/

The DDMS tool included in the Android SDK includes a tool for monitoring network traffic. It does not provide the kind of detail you get from tcpdump and similar low level tools, but it is still very useful.

Oficial documentation: http://developer.android.com/tools/debugging/ddms.html#network

Another option may be to have your fragment implement View.OnClickListener and override onClick(View v) within your fragment. If you need to have your fragment talk to the activity simply add an interface with desired method(s) and have the activity implement the interface and override its method(s).

public class FragName extends Fragment implements View.OnClickListener { 
    public FragmentCommunicator fComm;
    public ImageButton res1, res2;
    int c;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        return inflater.inflate(R.layout.fragment_test, container, false);
    }

    @Override
    public void onAttach(Activity activity) {
        super.onAttach(activity);
        try {
            fComm = (FragmentCommunicator) activity;
        } catch (ClassCastException e) {
            throw new ClassCastException(activity.toString()
                    + " must implement FragmentCommunicator");
        }
    }

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        res1 = (ImageButton) getActivity().findViewById(R.id.responseButton1);
        res1.setOnClickListener(this);
        res2 = (ImageButton) getActivity().findViewById(R.id.responseButton2);
        res2.setOnClickListener(this);
    }
    public void onClick(final View v) { //check for what button is pressed
            switch (v.getId()) {
                case R.id.responseButton1:
                  c *= fComm.fragmentContactActivity(2);
                  break;
                case R.id.responseButton2:
                  c *= fComm.fragmentContactActivity(4);
                  break;
                default:
                  c *= fComm.fragmentContactActivity(100);
                  break;
    }
    public interface FragmentCommunicator{
        public int fragmentContactActivity(int b);
    }



public class MainActivity extends FragmentActivity implements FragName.FragmentCommunicator{
    int a = 10;
    //variable a is update by fragment. ex. use to change textview or whatever else you'd like.

    public int fragmentContactActivity(int b) {
        //update info on activity here
        a += b;
        return a;
    }
}

http://developer.android.com/training/basics/firstapp/starting-activity.html http://developer.android.com/training/basics/fragments/communicating.html

Installing both webpack and CLI globally worked for me.

npm i -g webpack webpack-cli

For Ubuntu 16.04 and 18.04 or python 3 versions

sudo apt-get install python3-mysqldb

You're getting None because list.sort() it operates in-place, meaning that it doesn't return anything, but modifies the list itself. You only need to call a.sort() without assigning it to a again.

There is a built in function sorted(), which returns a sorted version of the list - a = sorted(a) will do what you want as well.

This is a very common question seen on Stackoverflow.

The important part here is not the command displayed in the error, but what the actual error tells you instead.

a Quick breakdown on why this error is received.

cmd.exe Being a terminal window relies on input and system Environment variables, in order to perform what you request it to do. it does NOT know the location of everything and it also does not know when to distinguish between commands or executable names which are separated by whitespace like space and tab or commands with whitespace as switch variables.

How do I fix this:

When Actual Command/executable fails

First we make sure, is the executable actually installed? If yes, continue with the rest, if not, install it first.

If you have any executable which you are attempting to run from cmd.exe then you need to tell cmd.exe where this file is located. There are 2 ways of doing this.

1. specify the full path to the file.

   "C:\My_Files\mycommand.exe"

2. Add the location of the file to your environment Variables.

Goto:
------> Control Panel-> System-> Advanced System Settings->Environment Variables

In the System Variables Window, locate path and select edit

Now simply add your path to the end of the string, seperated by a semicolon ; as:

;C:\My_Files\

Save the changes and exit. You need to make sure that ANY cmd.exe windows you had open are then closed and re-opened to allow it to re-import the environment variables. Now you should be able to run mycommand.exe from any path, within cmd.exe as the environment is aware of the path to it.

When C:\Program or Similar fails

This is a very simple error. Each string after a white space is seen as a different command in cmd.exe terminal, you simply have to enclose the entire path in double quotes in order for cmd.exe to see it as a single string, and not separate commands.

So to execute C:\Program Files\My-App\Mobile.exe simply run as:

"C:\Program Files\My-App\Mobile.exe"

we can do it with a single line of code.

 user1 = pd.read_csv('dataset/1.csv', names=['TIME', 'X', 'Y', 'Z'], header=None)

I made a change to Roshambo String.linkify() to the emailAddressPattern to recognize [email protected] addresses

if(!String.linkify) {
    String.prototype.linkify = function() {

        // http://, https://, ftp://
        var urlPattern = /\b(?:https?|ftp):\/\/[a-z0-9-+&@#\/%?=~_|!:,.;]*[a-z0-9-+&@#\/%=~_|]/gim;

        // www. sans http:// or https://
        var pseudoUrlPattern = /(^|[^\/])(www\.[\S]+(\b|$))/gim;

        // Email addresses *** here I've changed the expression ***
        var emailAddressPattern = /(([a-zA-Z0-9_\-\.]+)@[a-zA-Z_]+?(?:\.[a-zA-Z]{2,6}))+/gim;

        return this
            .replace(urlPattern, '<a target="_blank" href="$&">$&</a>')
            .replace(pseudoUrlPattern, '$1<a target="_blank" href="http://$2">$2</a>')
            .replace(emailAddressPattern, '<a target="_blank" href="mailto:$1">$1</a>');
    };
}

Do you need to retrieve the object even after the application shutting donw or just during it's running ?

You can store it into a database.
Or Simply create a custom Application class.

public class MyApplication extends Application {

    private static Object mMyObject;
    // static getter & setter
    ...
}

<manifest xmlns:android="http://schemas.android.com/apk/res/android">
    <application ... android:name=".MyApplication">
        <activity ... />
        ...
    </application>
    ...
</manifest>

And then from every activities do :

((MyApplication) getApplication).getMyObject();

Not really the best way but it works.

To avoid blinking problem use following code
its not mouseover and mouseout instead of that use mouseenter and mouseleave


**app.component.html**

    <div (mouseenter)="changeText=true" (mouseleave)="changeText=false">
      <span *ngIf="!changeText">Hide</span>
      <span *ngIf="changeText">Show</span>
    </div>

**app.component.ts**

@Component({
   selector: 'app-main',
   templateUrl: './app.component.html'
})
export class AppComponent {
    changeText: boolean;
    constructor() {
       this.changeText = false;
    }
}

There are two ways to approach this problem: numerically and symbolically.

To solve it numerically, you have to first encode it as a "runnable" function - stick a value in, get a value out. For example,

def my_function(x):
    return 2*x + 6

It is quite possible to parse a string to automatically create such a function; say you parse 2x + 6 into a list, [6, 2] (where the list index corresponds to the power of x - so 6*x^0 + 2*x^1). Then:

def makePoly(arr):
    def fn(x):
        return sum(c*x**p for p,c in enumerate(arr))
    return fn

my_func = makePoly([6, 2])
my_func(3)    # returns 12

You then need another function which repeatedly plugs an x-value into your function, looks at the difference between the result and what it wants to find, and tweaks its x-value to (hopefully) minimize the difference.

def dx(fn, x, delta=0.001):
    return (fn(x+delta) - fn(x))/delta

def solve(fn, value, x=0.5, maxtries=1000, maxerr=0.00001):
    for tries in xrange(maxtries):
        err = fn(x) - value
        if abs(err) < maxerr:
            return x
        slope = dx(fn, x)
        x -= err/slope
    raise ValueError('no solution found')

There are lots of potential problems here - finding a good starting x-value, assuming that the function actually has a solution (ie there are no real-valued answers to x^2 + 2 = 0), hitting the limits of computational accuracy, etc. But in this case, the error minimization function is suitable and we get a good result:

solve(my_func, 16)    # returns (x =) 5.000000000000496

Note that this solution is not absolutely, exactly correct. If you need it to be perfect, or if you want to try solving families of equations analytically, you have to turn to a more complicated beast: a symbolic solver.

A symbolic solver, like Mathematica or Maple, is an expert system with a lot of built-in rules ("knowledge") about algebra, calculus, etc; it "knows" that the derivative of sin is cos, that the derivative of kx^p is kpx^(p-1), and so on. When you give it an equation, it tries to find a path, a set of rule-applications, from where it is (the equation) to where you want to be (the simplest possible form of the equation, which is hopefully the solution).

Your example equation is quite simple; a symbolic solution might look like:

=> LHS([6, 2]) RHS([16])

# rule: pull all coefficients into LHS
LHS, RHS = [lh-rh for lh,rh in izip_longest(LHS, RHS, 0)], [0]

=> LHS([-10,2]) RHS([0])

# rule: solve first-degree poly
if RHS==[0] and len(LHS)==2:
    LHS, RHS = [0,1], [-LHS[0]/LHS[1]]

=> LHS([0,1]) RHS([5])

and there is your solution: x = 5.

I hope this gives the flavor of the idea; the details of implementation (finding a good, complete set of rules and deciding when each rule should be applied) can easily consume many man-years of effort.