Programs & Examples On #Innovation

It's a simple "&" function.

=cell&"yourtexthere"

Example - your cell says Mickey, and you want Mickey Mouse. Mickey is in A2. In B2, type

=A2&" Mouse"

Then, copy and "paste special" for values.

B2 now reads "Mickey Mouse"

Microsoft has given us a cleaner, more convenient way of creating anonymous delegates called Lambda expressions. However, there is not a lot of attention being paid to the expressions portion of this statement. Microsoft released a entire namespace, System.Linq.Expressions, which contains classes to create expression trees based on lambda expressions. Expression trees are made up of objects that represent logic. For example, x = y + z is an expression that might be part of an expression tree in .Net. Consider the following (simple) example:

using System;
using System.Linq;
using System.Linq.Expressions;


namespace ExpressionTreeThingy
{
    class Program
    {
        static void Main(string[] args)
        {
            Expression<Func<int, int>> expr = (x) => x + 1; //this is not a delegate, but an object
            var del = expr.Compile(); //compiles the object to a CLR delegate, at runtime
            Console.WriteLine(del(5)); //we are just invoking a delegate at this point
            Console.ReadKey();
        }
    }
}

This example is trivial. And I am sure you are thinking, "This is useless as I could have directly created the delegate instead of creating an expression and compiling it at runtime". And you would be right. But this provides the foundation for expression trees. There are a number of expressions available in the Expressions namespaces, and you can build your own. I think you can see that this might be useful when you don't know exactly what the algorithm should be at design or compile time. I saw an example somewhere for using this to write a scientific calculator. You could also use it for Bayesian systems, or for genetic programming (AI). A few times in my career I have had to write Excel-like functionality that allowed users to enter simple expressions (addition, subtrations, etc) to operate on available data. In pre-.Net 3.5 I have had to resort to some scripting language external to C#, or had to use the code-emitting functionality in reflection to create .Net code on the fly. Now I would use expression trees.

Something like this may work...

@{
    var base64 = Convert.ToBase64String(Model.ByteArray);
    var imgSrc = String.Format("data:image/gif;base64,{0}", base64);
}

<img src="@imgSrc" />

As mentioned in the comments below, please use the above armed with the knowledge that although this may answer your question it may not solve your problem. Depending on your problem this may be the solution but I wouldn't completely rule out accessing the database twice.

Override constructor of DbContext Try this :-

public DataContext(DbContextOptions<DataContext> option):base(option) {}

Get fields where a timestamp is greater than date in postgresql:

SELECT * from yourtable 
WHERE your_timestamp_field > to_date('05 Dec 2000', 'DD Mon YYYY');

Subtract minutes from timestamp in postgresql:

SELECT * from yourtable 
WHERE your_timestamp_field > current_timestamp - interval '5 minutes'

Subtract hours from timestamp in postgresql:

SELECT * from yourtable 
WHERE your_timestamp_field > current_timestamp - interval '5 hours'

I found that there was a syntax error in the related module and it wasn't compiling - the compiler didn't tell me that though. Just gave me the error regarding the app.config stuff. VS2010. Once I had fixed the syntax error, all was good.

When you aren't doing anything to make your class particularly designed to work with a given framework, ORM, or other system that needs a special sort of class, you have a Plain Old Java Object, or POJO.

Ironically, one of the reasons for coining the term is that people were avoiding them in cases where they were sensible and some people concluded that this was because they didn't have a fancy name. Ironic, because your question demonstrates that the approach worked.

Compare the older POD "Plain Old Data" to mean a C++ class that doesn't do anything a C struct couldn't do (more or less, non-virtual members that aren't destructors or trivial constructors don't stop it being considered POD), and the newer (and more directly comparable) POCO "Plain Old CLR Object" in .NET.

Just wondering why you are using 2 directives?

It seems like, in this case it would be more straightforward to have a controller as the parent - handle adding the data from your service to its $scope, and pass the model you need from there into your warrantyDirective.

Or for that matter, you could use 0 directives to achieve the same result. (ie. move all functionality out of the separate directives and into a single controller).

It doesn't look like you're doing any explicit DOM transformation here, so in this case, perhaps using 2 directives is overcomplicating things.

Alternatively, have a look at the Angular documentation for directives: http://docs.angularjs.org/guide/directive The very last example at the bottom of the page explains how to wire up dependent directives.

A few things here...

If you want to call a function when the onclick event happens, you'll just want the function name plus the parameters.

Then if your parameters are a variable (which they look like they are), then you won't want quotes around them. Not only that, but if these are global variables, you'll want to add in "window." before that, because that's the object that holds all global variables.

Lastly, if these parameters aren't variables, you'll want to exclude the slashes to escape those characters. Since the value of onclick is wrapped by double quotes, single quotes won't be an issue. So your answer will look like this...

<a href=# onclick="ReAssign('valuationId', window.user)">Re-Assign</a>

There are a few extra things to note here, if you want more than a quick solution.

You looked like you were trying to use the + operator to combine strings in HTML. HTML is a scripting language, so when you're writing it, the whole thing is just a string itself. You can just skip these from now on, because it's not code your browser will be running (just a whole bunch of stuff, and anything that already exists is what has special meaning by the browser).

Next, you're using an anchor tag/link that doesn't actually take the user to another website, just runs some code. I'd use something else other than an anchor tag, with the appropriate CSS to format it to look the way you want. It really depends on the setting, but in many cases, a span tag will do. Give it a class (like class="runjs") and have a rule of CSS for that. To get it to imitate a link's behavior, use this:

.runjs {
    cursor: pointer;
    text-decoration: underline;
    color: blue;
}

This lets you leave out the href attribute which you weren't using anyways.

Last, you probably want to use JavaScript to set the value of this link's onclick attribute instead of hand writing it. It keeps your page cleaner by keeping the code of your page separate from what the structure of your page. In your class, you could change all these links like this...

var links = document.getElementsByClassName('runjs');
for(var i = 0; i < links.length; i++)
    links[i].onclick = function() { ReAssign('valuationId', window.user); };

While this won't work in some older browsers (because of the getElementsByClassName method), it's just three lines and does exactly what you're looking for. Each of these links has an anonymous function tied to them meaning they don't have any variable tied to them except that tag's onclick value. Plus if you wanted to, you could include more lines of code this way, all grouped up in one tidy location.

You can use ES6 backtick syntax too

<a href={`/customer/${item._id}`} >{item.get('firstName')} {item.get('lastName')}</a>

More info on es6 template literals

If using Visual Studio 2010 you can right-click on the project for the service, and select properties. Then select the Web tab. Under the Servers section you can configure the URL. There is also a button to create the virtual directory.

DATE: It is used for values with a date part but no time part. MySQL retrieves and displays DATE values in YYYY-MM-DD format. The supported range is 1000-01-01 to 9999-12-31.

DATETIME: It is used for values that contain both date and time parts. MySQL retrieves and displays DATETIME values in YYYY-MM-DD HH:MM:SS format. The supported range is 1000-01-01 00:00:00 to 9999-12-31 23:59:59.

TIMESTAMP: It is also used for values that contain both date and time parts, and includes the time zone. TIMESTAMP has a range of 1970-01-01 00:00:01 UTC to 2038-01-19 03:14:07 UTC.

TIME: Its values are in HH:MM:SS format (or HHH:MM:SS format for large hours values). TIME values may range from -838:59:59 to 838:59:59. The hours part may be so large because the TIME type can be used not only to represent a time of day (which must be less than 24 hours), but also elapsed time or a time interval between two events (which may be much greater than 24 hours, or even negative).

\begin{equation}
\resizebox{.9\hsize}{!}{$A+B+C+D+E+F+G+H+I+J+K+L+M+N+O+P+Q+R+S+T+U+V+W+X+Y+Z$}
\end{equation}

or

\begin{equation}
\resizebox{.8\hsize}{!}{$A+B+C+D+E+F+G+H+I+J+K+L+M+N+O+P+Q+R+S+T+U+V+W+X+Y+Z$}
\end{equation}

Just been doing that myself today... here is code I have working for me...

$data = array("a" => $a);
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "PUT");
curl_setopt($ch, CURLOPT_POSTFIELDS,http_build_query($data));

$response = curl_exec($ch);

if (!$response) 
{
    return false;
}

src: http://www.lornajane.net/posts/2009/putting-data-fields-with-php-curl

This line

secondNumber = Screen.text!.toInt()!

means: Get the Screen object, get the text property and please crash if it doesn't exist, then get the text converted to an integer, and please crash if it doesn't exist.

That's what the ! means: "I am sure this thing exists, so please crash if it doesn't". And crash is what it did.

Map<String, Set<String>> collect = Arrays.asList(Locale.getAvailableLocales()).stream().collect(Collectors
                .toMap(l -> l.getDisplayCountry(), l -> Collections.singleton(l.getDisplayLanguage())));

To get al installed apps you can use Package Manager..

    List<PackageInfo> apps = getPackageManager().getInstalledPackages(0);

To run you can use package name

Intent launchApp = getPackageManager().getLaunchIntentForPackage(“package name”)
startActivity(launchApp);

For more detail you can read this blog http://codebucket.co.in/android-get-list-of-all-installed-apps/

Same this problem i am facing my client application is WinForms application C# 4.0

When i read the solution here, i checked Date & Time of client computer, but that was right and current time was showing, but still i was facing these problem.

After some work-around i found that wrong time zone has selected, i am in India and time zone was of Canada, the host server is located in Kuwait.

I found that system converts time to universal time.

When i changed the time zone to India's time zone, the problem was soled.

Add sudo to your command line, like:

$ sudo firebase init

Simple answer: You can't. Form elements have very limited styling capabilities.

The best alternative would be to set disabled=true on the option (and maybe a gray colour, since only IE does that automatically), and this will make the option unclickable.

Alternatively, if you can, completely remove the option element.

Have just solved. Just two f. days of brutforce

For me the secret was in following:

1. I called POST /api/auth and see that cookies were successfully received.

2. Then calling GET /api/users/ with credentials: 'include' and got 401 unauth, because of no cookies were sent with the request.

The KEY is to set credentials: 'include' for the first /api/auth call too.

When you write List<String> list = new LinkedList();, compiler produces an "unchecked" warning. You may ignore it, but if you used to ignore these warnings you may also miss a warning that notifies you about a real type safety problem.

So, it's better to write a code that doesn't generate extra warnings, and diamond operator allows you to do it in convenient way without unnecessary repetition.

Yet another alternative function...

function param(name) {
    return (location.search.split(name + '=')[1] || '').split('&')[0];
}

The exit() and quit() built in functions do just what you want. No import of sys needed.

Alternatively, you can raise SystemExit, but you need to be careful not to catch it anywhere (which shouldn't happen as long as you specify the type of exception in all your try.. blocks).

I know this does not answer your question, but I always end up on this page, when I search for the matplotlib solution to histograms, because the simple histogram_demo was removed from the matplotlib example gallery page.

Here is a solution, which doesn't require numpy to be imported. I only import numpy to generate the data x to be plotted. It relies on the function hist instead of the function bar as in the answer by @unutbu.

import numpy as np
mu, sigma = 100, 15
x = mu + sigma * np.random.randn(10000)

import matplotlib.pyplot as plt
plt.hist(x, bins=50)
plt.savefig('hist.png')

Also check out the matplotlib gallery and the matplotlib examples.

Its a late answer, but as I can see most of the people mentioned about "refresh" method to redirect a webpage. As per W3C, we should not use "refresh" to redirect. Because it could break the "back" button. Imagine that the user presses the "back" button, the refresh would work again, and the user would bounce forward. The user will most likely get very annoyed, and close the window, which is probably not what you, as the author of this page, want.

Use HTTP redirects instead. One can refer the complete documentation here: W3C document

You're probably trying to to update the same row of the target table multiple times. I just encountered the very same problem in a merge statement I developed. Make sure your update does not touch the same record more than once in the execution of the merge.

way 1 :

Let we have java file test.java which contains main class testa now first we compile our java file simply as javac test.java we create file manifest.txt in same directory and we write Main-Class: mainclassname . e.g :

  Main-Class: testa

then we create jar file by this command :

  jar cvfm anyname.jar manifest.txt testa.class

then we run jar file by this command : java -jar anyname.jar

way 2 :

Let we have one package named one and every class are inside it. then we create jar file by this command :

  jar cf anyname.jar one

then we open manifest.txt inside directory META-INF in anyname.jar file and write

  Main-Class: one.mainclassname 

in third line., then we run jar file by this command :

  java -jar anyname.jar

to make jar file having more than one class file : jar cf anyname.jar one.class two.class three.class......

In my case the error got resolved by migrating to OpenCV 4.0 (or higher).

Further to @Kyle Kelley and @DGrady, here is the entry which can be found in the

$HOME/.ipython/profile_default/ipython_kernel_config.py (or whichever profile you have created)

Change

# Configure matplotlib for interactive use with the default matplotlib backend.
# c.IPKernelApp.matplotlib = none

to

# Configure matplotlib for interactive use with the default matplotlib backend.
c.IPKernelApp.matplotlib = 'inline'

This will then work in both ipython qtconsole and notebook sessions.

I took aberke's solution and modified it to suit my taste.

• It produces a single input element
• It optionally accepts extensions
• For US numbers it skips the leading country code
• Standard naming conventions
• Uses class from using code; doesn't make up a class
• Allows use of any other attributes allowed on an input element

My Code Pen

var myApp = angular.module('myApp', []);_x000D_
_x000D_
myApp.controller('exampleController',_x000D_
  function exampleController($scope) {_x000D_
    $scope.user = { profile: {HomePhone: '(719) 465-0001 x1234'}};_x000D_
    $scope.homePhonePrompt = "Home Phone";_x000D_
  });_x000D_
_x000D_
myApp_x000D_
/*_x000D_
    Intended use:_x000D_
    <phone-number placeholder='prompt' model='someModel.phonenumber' />_x000D_
    Where: _x000D_
      someModel.phonenumber: {String} value which to bind formatted or unformatted phone number_x000D_
_x000D_
    prompt: {String} text to keep in placeholder when no numeric input entered_x000D_
*/_x000D_
.directive('phoneNumber',_x000D_
  ['$filter',_x000D_
  function ($filter) {_x000D_
    function link(scope, element, attributes) {_x000D_
_x000D_
      // scope.inputValue is the value of input element used in template_x000D_
      scope.inputValue = scope.phoneNumberModel;_x000D_
_x000D_
      scope.$watch('inputValue', function (value, oldValue) {_x000D_
_x000D_
        value = String(value);_x000D_
        var number = value.replace(/[^0-9]+/g, '');_x000D_
        scope.inputValue = $filter('phoneNumber')(number, scope.allowExtension);_x000D_
        scope.phoneNumberModel = scope.inputValue;_x000D_
      });_x000D_
    }_x000D_
_x000D_
    return {_x000D_
      link: link,_x000D_
      restrict: 'E',_x000D_
      replace: true,_x000D_
      scope: {_x000D_
        phoneNumberPlaceholder: '@placeholder',_x000D_
        phoneNumberModel: '=model',_x000D_
        allowExtension: '=extension'_x000D_
      },_x000D_
      template: '<input ng-model="inputValue" type="tel" placeholder="{{phoneNumberPlaceholder}}" />'_x000D_
    };_x000D_
  }_x000D_
  ]_x000D_
)_x000D_
/* _x000D_
    Format phonenumber as: (aaa) ppp-nnnnxeeeee_x000D_
    or as close as possible if phonenumber length is not 10_x000D_
    does not allow country code or extensions > 5 characters long_x000D_
*/_x000D_
.filter('phoneNumber', _x000D_
  function() {_x000D_
    return function(number, allowExtension) {_x000D_
      /* _x000D_
      @param {Number | String} number - Number that will be formatted as telephone number_x000D_
      Returns formatted number: (###) ###-#### x #####_x000D_
      if number.length < 4: ###_x000D_
      else if number.length < 7: (###) ###_x000D_
      removes country codes_x000D_
      */_x000D_
      if (!number) {_x000D_
        return '';_x000D_
      }_x000D_
_x000D_
      number = String(number);_x000D_
      number = number.replace(/[^0-9]+/g, '');_x000D_
      _x000D_
      // Will return formattedNumber. _x000D_
      // If phonenumber isn't longer than an area code, just show number_x000D_
      var formattedNumber = number;_x000D_
_x000D_
      // if the first character is '1', strip it out _x000D_
      var c = (number[0] == '1') ? '1 ' : '';_x000D_
      number = number[0] == '1' ? number.slice(1) : number;_x000D_
_x000D_
      // (###) ###-#### as (areaCode) prefix-endxextension_x000D_
      var areaCode = number.substring(0, 3);_x000D_
      var prefix = number.substring(3, 6);_x000D_
      var end = number.substring(6, 10);_x000D_
      var extension = number.substring(10, 15);_x000D_
_x000D_
      if (prefix) {_x000D_
        //formattedNumber = (c + "(" + area + ") " + front);_x000D_
        formattedNumber = ("(" + areaCode + ") " + prefix);_x000D_
      }_x000D_
      if (end) {_x000D_
        formattedNumber += ("-" + end);_x000D_
      }_x000D_
      if (allowExtension && extension) {_x000D_
        formattedNumber += ("x" + extension);_x000D_
      }_x000D_
      return formattedNumber;_x000D_
    };_x000D_
  }_x000D_
);

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>_x000D_
<div ng-app="myApp" ng-controller="exampleController">_x000D_
  <p>Phone Number Value: {{ user.profile.HomePhone || 'null' }}</p>_x000D_
  <p>Formatted Phone Number: {{ user.profile.HomePhone | phoneNumber }}</p>_x000D_
        <phone-number id="homePhone"_x000D_
                      class="form-control" _x000D_
                      placeholder="Home Phone" _x000D_
                      model="user.profile.HomePhone"_x000D_
                      ng-required="!(user.profile.HomePhone.length || user.profile.BusinessPhone.length || user.profile.MobilePhone.length)" />_x000D_
</div>

This version always returns the number of seconds difference as a positive number (same result as @freedeveloper's solution):

var seconds = System.Math.Abs((date1 - date2).TotalSeconds);

Another approach is to filter using LINQ before the loop executes:

foreach ( int number in numbers.Where(n => n >= 0) )
{
    // process number
}

    select v.SQL_TEXT,
           v.PARSING_SCHEMA_NAME,
           v.FIRST_LOAD_TIME,
           v.DISK_READS,
           v.ROWS_PROCESSED,
           v.ELAPSED_TIME,
           v.service
      from v$sql v
where to_date(v.FIRST_LOAD_TIME,'YYYY-MM-DD hh24:mi:ss')>ADD_MONTHS(trunc(sysdate,'MM'),-2)

where clause is optional. You can sort the results according to FIRST_LOAD_TIME and find the records up to 2 months ago.

Add the following permissions into your manifest file:

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

Enable bluetooth use this

BluetoothAdapter mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();    
if (!mBluetoothAdapter.isEnabled()) {
    mBluetoothAdapter.enable(); 
}else{Toast.makeText(getApplicationContext(), "Bluetooth Al-Ready Enable", Toast.LENGTH_LONG).show();}

Disable bluetooth use this

BluetoothAdapter mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();    
if (mBluetoothAdapter.isEnabled()) {
    mBluetoothAdapter.disable(); 
}

Tags and attributes in HTML have the form

<tag 
   attrnovalue 
   attrnoquote=bli 
   attrdoublequote="blah 'blah'"
   attrsinglequote='bloob "bloob"' >

To match attributes, you need a regex attr that finds one of the four forms. Then you need to make sure that only matches are reported within HTML tags. Assuming you have the correct regex, the total regex would be:

attr(?=(attr)*\s*/?\s*>)

The lookahead ensures that only other attributes and the closing tag follow the attribute. I use the following regular expression for attr:

\s+(\w+)(?:\s*=\s*(?:"([^"]*)"|'([^']*)'|([^><"'\s]+)))?

Unimportant groups are made non capturing. The first matching group $1 gives you the name of the attribute, the value is one of $2or $3 or $4. I use $2$3$4 to extract the value. The final regex is

\s+(\w+)(?:\s*=\s*(?:"([^"]*)"|'([^']*)'|([^><"'\s]+)))?(?=(?:\s+\w+(?:\s*=\s*(?:"[^"]*"|'[^']*'|[^><"'\s]+))?)*\s*/?\s*>)

Note: I removed all unnecessary groups in the lookahead and made all remaining groups non capturing.

You can use extend method in list operations as well.

>>> list1 = []
>>> list1.extend('somestring')
>>> list1
['s', 'o', 'm', 'e', 's', 't', 'r', 'i', 'n', 'g']

I think the regex / string parsing solutions are great, but for this particular context, it seems like it would make sense just to use java's url parser:

https://docs.oracle.com/javase/tutorial/networking/urls/urlInfo.html

Taken from that page:

import java.net.*;
import java.io.*;

public class ParseURL {
    public static void main(String[] args) throws Exception {

        URL aURL = new URL("http://example.com:80/docs/books/tutorial"
                           + "/index.html?name=networking#DOWNLOADING");

        System.out.println("protocol = " + aURL.getProtocol());
        System.out.println("authority = " + aURL.getAuthority());
        System.out.println("host = " + aURL.getHost());
        System.out.println("port = " + aURL.getPort());
        System.out.println("path = " + aURL.getPath());
        System.out.println("query = " + aURL.getQuery());
        System.out.println("filename = " + aURL.getFile());
        System.out.println("ref = " + aURL.getRef());
    }
}

yields the following:

protocol = http
authority = example.com:80
host = example.com
port = 80
path = /docs/books/tutorial/index.html
query = name=networking
filename = /docs/books/tutorial/index.html?name=networking
ref = DOWNLOADING

//Page load starts here

var json = new System.Web.Script.Serialization.JavaScriptSerializer().Serialize(new
{
    api_key = "my key",
    action = "categories",
    store_id = "my store"
});

var json2 = "{\"api_key\":\"my key\",\"action\":\"categories\",\"store_id\":\"my store\",\"user\" : {\"id\" : 12345,\"screen_name\" : \"twitpicuser\"}}";
var list = new System.Web.Script.Serialization.JavaScriptSerializer().Deserialize<FooBar>(json);
var list2 = new System.Web.Script.Serialization.JavaScriptSerializer().Deserialize<FooBar>(json2);

string a = list2.action;
var b = list2.user;
string c = b.screen_name;

//Page load ends here

public class FooBar
{
    public string api_key { get; set; }
    public string action { get; set; }
    public string store_id { get; set; }
    public User user { get; set; }
}

public class User
{
    public int id { get; set; }
    public string screen_name { get; set; }
}

UPDATE: for your updated question

variable.match(/\[[0-9]+\]/);

Try this:

variable.match(/[0-9]+/);    // for unsigned integers
variable.match(/[-0-9]+/);   // for signed integers
variable.match(/[-.0-9]+/);  // for signed float numbers

Hope this helps!

Try to surround the path with quotes, and remove the spaces

export PYTHONPATH="/home/user/my_project":$PYTHONPATH

And don't forget to preserve previous content suffixing by :$PYTHONPATH (which is the value of the variable)

Execute the following command to check everything is configured correctly:

echo $PYTHONPATH

You can use DecoratedBox.

@override
Widget build(BuildContext context) {
  return DecoratedBox(
    decoration: BoxDecoration(
      image: DecorationImage(image: AssetImage("your_asset"), fit: BoxFit.cover),
    ),
    child: Center(child: FlutterLogo(size: 300)),
  );
}

Output:

You can use the onclick attribute, just return false if you don't want continue;

<script type="text/javascript">
function confirm_alert(node) {
    return confirm("Please click on OK to continue.");
}
</script>
<a href="http://www.google.com" onclick="return confirm_alert(this);">Click Me</a>

A directive which adds another directive to the same element:

Similar answers:

• How to get ng-class with $dirty working in a directive?
• creating a new directive with angularjs

Here is a plunker: http://plnkr.co/edit/ziU8d826WF6SwQllHHQq?p=preview

app.directive("myDir", function($compile) {
  return {
    priority:1001, // compiles first
    terminal:true, // prevent lower priority directives to compile after it
    compile: function(el) {
      el.removeAttr('my-dir'); // necessary to avoid infinite compile loop
      el.attr('ng-click', 'fxn()');
      var fn = $compile(el);
      return function(scope){
        fn(scope);
      };
    }
  };
});

Much cleaner solution - not to use ngClick at all:

A plunker: http://plnkr.co/edit/jY10enUVm31BwvLkDIAO?p=preview

app.directive("myDir", function($parse) {
  return {
    compile: function(tElm,tAttrs){
      var exp = $parse('fxn()');
      return function (scope,elm){
        elm.bind('click',function(){
          exp(scope);
        });  
      };
    }
  };
});

You can read up elsewhere on substitution variables; they're quite handy in SQL Developer. But I have fits trying to use bind variables in SQL Developer. This is what I do:

SET SERVEROUTPUT ON
declare
  v_testnum number;
  v_teststring varchar2(1000);

begin
   v_testnum := 2;
   DBMS_OUTPUT.put_line('v_testnum is now ' || v_testnum);

   SELECT 36,'hello world'
   INTO v_testnum, v_teststring
   from dual;

   DBMS_OUTPUT.put_line('v_testnum is now ' || v_testnum);
   DBMS_OUTPUT.put_line('v_teststring is ' || v_teststring);
end;

SET SERVEROUTPUT ON makes it so text can be printed to the script output console.

I believe what we're doing here is officially called PL/SQL. We have left the pure SQL land and are using a different engine in Oracle. You see the SELECT above? In PL/SQL you always have to SELECT ... INTO either variable or a refcursor. You can't just SELECT and return a result set in PL/SQL.

http://web.archive.org/web/20131107050923/http://www.roman10.net/serial-port-communication-in-python/comment-page-1/

#!/usr/bin/python

import serial, time
#initialization and open the port

#possible timeout values:
#    1. None: wait forever, block call
#    2. 0: non-blocking mode, return immediately
#    3. x, x is bigger than 0, float allowed, timeout block call

ser = serial.Serial()
#ser.port = "/dev/ttyUSB0"
ser.port = "/dev/ttyUSB7"
#ser.port = "/dev/ttyS2"
ser.baudrate = 9600
ser.bytesize = serial.EIGHTBITS #number of bits per bytes
ser.parity = serial.PARITY_NONE #set parity check: no parity
ser.stopbits = serial.STOPBITS_ONE #number of stop bits
#ser.timeout = None          #block read
ser.timeout = 1            #non-block read
#ser.timeout = 2              #timeout block read
ser.xonxoff = False     #disable software flow control
ser.rtscts = False     #disable hardware (RTS/CTS) flow control
ser.dsrdtr = False       #disable hardware (DSR/DTR) flow control
ser.writeTimeout = 2     #timeout for write

try: 
    ser.open()
except Exception, e:
    print "error open serial port: " + str(e)
    exit()

if ser.isOpen():

    try:
        ser.flushInput() #flush input buffer, discarding all its contents
        ser.flushOutput()#flush output buffer, aborting current output 
                 #and discard all that is in buffer

        #write data
        ser.write("AT+CSQ")
        print("write data: AT+CSQ")

       time.sleep(0.5)  #give the serial port sometime to receive the data

       numOfLines = 0

       while True:
          response = ser.readline()
          print("read data: " + response)

        numOfLines = numOfLines + 1

        if (numOfLines >= 5):
            break

        ser.close()
    except Exception, e1:
        print "error communicating...: " + str(e1)

else:
    print "cannot open serial port "

In my case, it was an infinite sort. That is, at first the line moved up according to the condition, and then the same line moved down to the same place. I added one more condition at the end that unambiguously established the order of the lines.

The main difference between logging in with a postgres user or any other user created by us, is that when using the postgres user it is NOT necessary to specify the host with -h and instead for another user if.

Login with postgres user

$ psql -U postgres 

Creation and login with another user

# CREATE ROLE usertest LOGIN PASSWORD 'pwtest';
# CREATE DATABASE dbtest WITH OWNER = usertest;
# SHOW port;
# \q

$ psql -h localhost -d dbtest -U usertest -p 5432

GL

Source

During a merge Git wants to keep track of the parent branches for all sorts of reasons. What you want to do is not a merge as git sees it. You will likely want to do a rebase or cherry-pick manually.

• This will unstage all files you might have staged with git add:

  git reset
  

• This will revert all local uncommitted changes (should be executed in repo root):

  git checkout .
  

  You can also revert uncommitted changes only to particular file or directory:

  git checkout [some_dir|file.txt]
  

  Yet another way to revert all uncommitted changes (longer to type, but works from any subdirectory):

  git reset --hard HEAD
  

• This will remove all local untracked files, so only git tracked files remain:

  git clean -fdx
  

  WARNING: -x will also remove all ignored files, including ones specified by .gitignore! You may want to use -n for preview of files to be deleted.

To sum it up: executing commands below is basically equivalent to fresh git clone from original source (but it does not re-download anything, so is much faster):

git reset
git checkout .
git clean -fdx

Typical usage for this would be in build scripts, when you must make sure that your tree is absolutely clean - does not have any modifications or locally created object files or build artefacts, and you want to make it work very fast and to not re-clone whole repository every single time.

You must check this: Docblock Comment standards

http://pear.php.net/manual/en/standards.sample.php

You misread the documentation. You need to do two things:

1. Quote each key and value from your dictionary, and
2. Encode those into a URL

Luckily urllib.parse.urlencode does both those things in a single step, and that's the function you should be using.

from urllib.parse import urlencode, quote_plus

payload = {'username':'administrator', 'password':'xyz'}
result = urlencode(payload, quote_via=quote_plus)
# 'password=xyz&username=administrator'

In your example, you should createElement('img').

In your link, base64blob != Base64.encode(blob).

This works, as long as your data is valid http://jsfiddle.net/SXFwP/ (I didn't have any BMP images so I had to use PNG).

The usual method is to use the NEWID() function, which generates a unique GUID. So,

SELECT * FROM dbo.Foo ORDER BY NEWID();

Based on Husam's answer: Using the cell layer instead of content view allows for adding a border around the entire cell and the accessory if need. This method requires careful adjustment of the bottom constraints of the cell as well as those insets otherwise the view will not proper.

@implementation TableViewCell

- (void)awakeFromNib { 
    ... 
}

- (void) layoutSubviews {
    [super layoutSubviews];

    CGRect newFrame = UIEdgeInsetsInsetRect(self.layer.frame, UIEdgeInsetsMake(4, 0, 4, 0));
    self.layer.frame = newFrame;
}

@end

here's how you can do it with a cool shell trick:

mysql -uroot -p -hslavedb.mydomain.com mydb_production <<< 'select * from users'

'<<<' instructs the shell to take whatever follows it as stdin, similar to piping from echo.

use the -t flag to enable table-format output

Simple and neet : use vw units for a responsive height/width according to the viewport width.

vw : 1/100th of the width of the viewport. (Source MDN)

DEMO

HTML:

<div></div>

CSS for a 1:1 aspect ratio:

div{
    width:80vw;
    height:80vw; /* same as width */
}

Table to calculate height according to the desired aspect ratio and width of element.

   aspect ratio  |  multiply width by
    -----------------------------------
         1:1      |         1
         1:3      |         3
         4:3      |        0.75
        16:9      |       0.5625

This technique allows you to :

• insert any content inside the element without using position:absolute;
• no unecessary HTML markup (only one element)
• adapt the elements aspect ratio according to the height of the viewport using vh units
• you can make a responsive square or other aspect ratio that alway fits in viewport according to the height and width of the viewport (see this answer : Responsive square according to width and height of viewport or this demo)

These units are supported by IE9+ see canIuse for more info

You can use:

result = result.split("\n")[0];

Your code doesn't get the UTF-8 into memory as you read it back into a string again, so its no longer in UTF-8, but back in UTF-16 (though ideally its best to consider strings at a higher level than any encoding, except when forced to do so).

To get the actual UTF-8 octets you could use:

var serializer = new XmlSerializer(typeof(SomeSerializableObject));

var memoryStream = new MemoryStream();
var streamWriter = new StreamWriter(memoryStream, System.Text.Encoding.UTF8);

serializer.Serialize(streamWriter, entry);

byte[] utf8EncodedXml = memoryStream.ToArray();

I've left out the same disposal you've left. I slightly favour the following (with normal disposal left in):

var serializer = new XmlSerializer(typeof(SomeSerializableObject));
using(var memStm = new MemoryStream())
using(var  xw = XmlWriter.Create(memStm))
{
  serializer.Serialize(xw, entry);
  var utf8 = memStm.ToArray();
}

Which is much the same amount of complexity, but does show that at every stage there is a reasonable choice to do something else, the most pressing of which is to serialise to somewhere other than to memory, such as to a file, TCP/IP stream, database, etc. All in all, it's not really that verbose.

With VisualStudio 2012 there is a way to handle subj without publish profiles. You can pass output folder using parameters. It works both with absolute and relative path in 'publishUrl' parameter. You can use VS100COMNTOOLS, however you need to override VisualStudioVersion to use target 'WebPublish' from %ProgramFiles%\MSBuild\Microsoft\VisualStudio\v11.0\WebApplications\Microsoft.WebApplication.targets. With VisualStudioVersion 10.0 this script will succeed with no outputs :)

Update: I've managed to use this method on a build server with just Windows SDK 7.1 installed (no Visual Studio 2010 and 2012 on a machine). But I had to follow these steps to make it work:

1. Make Windows SDK 7.1 current on a machine using Simmo answer (https://stackoverflow.com/a/2907056/2164198)
2. Setting Registry Key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\VisualStudio\SxS\VS7\10.0 to "C:\Program Files\Microsoft Visual Studio 10.0\" (use your path as appropriate)
3. Copying folder %ProgramFiles%\MSBuild\Microsoft\VisualStudio\v11.0 from my developer machine to build server

Script:

set WORK_DIR=%~dp0
pushd %WORK_DIR%
set OUTPUTS=%WORK_DIR%..\Outputs
set CONFIG=%~1
if "%CONFIG%"=="" set CONFIG=Release
set VSTOOLS="%VS100COMNTOOLS%"
if %VSTOOLS%=="" set "PATH=%PATH%;%WINDIR%\Microsoft.NET\Framework\v4.0.30319" && goto skipvsinit
call "%VSTOOLS:~1,-1%vsvars32.bat"
if errorlevel 1 goto end
:skipvsinit
msbuild.exe Project.csproj /t:WebPublish /p:Configuration=%CONFIG% /p:VisualStudioVersion=11.0 /p:WebPublishMethod=FileSystem /p:publishUrl=%OUTPUTS%\Project
if errorlevel 1 goto end
:end
popd
exit /b %ERRORLEVEL%

Some applications launches themselves by protocols. like itunes with "itms://" links. I don't know however how you can register that with windows.

git rebase origin means "rebase from the tracking branch of origin", while git rebase origin/master means "rebase from the branch master of origin"

You must have a tracking branch in ~/Desktop/test, which means that git rebase origin knows which branch of origin to rebase with. If no tracking branch exists (in the case of ~/Desktop/fallstudie), git doesn't know which branch of origin it must take, and fails.

To fix this, you can make the branch track origin/master with:

git branch --set-upstream-to=origin/master 

Or, if master isn't the currently checked-out branch:

git branch --set-upstream-to=origin/master master

Try this character set:

[ \t]

This does only match a space or a tabulator.

A raw type is the name of a generic class or interface without any type arguments. For example, given the generic Box class:

public class Box<T> {
    public void set(T t) { /* ... */ }
    // ...
}

To create a parameterized type of Box<T>, you supply an actual type argument for the formal type parameter T:

Box<Integer> intBox = new Box<>();

If the actual type argument is omitted, you create a raw type of Box<T>:

Box rawBox = new Box();

Therefore, Box is the raw type of the generic type Box<T>. However, a non-generic class or interface type is not a raw type.

Raw types show up in legacy code because lots of API classes (such as the Collections classes) were not generic prior to JDK 5.0. When using raw types, you essentially get pre-generics behavior — a Box gives you Objects. For backward compatibility, assigning a parameterized type to its raw type is allowed:

Box<String> stringBox = new Box<>();
Box rawBox = stringBox;               // OK

But if you assign a raw type to a parameterized type, you get a warning:

Box rawBox = new Box();           // rawBox is a raw type of Box<T>
Box<Integer> intBox = rawBox;     // warning: unchecked conversion

You also get a warning if you use a raw type to invoke generic methods defined in the corresponding generic type:

Box<String> stringBox = new Box<>();
Box rawBox = stringBox;
rawBox.set(8);  // warning: unchecked invocation to set(T)

The warning shows that raw types bypass generic type checks, deferring the catch of unsafe code to runtime. Therefore, you should avoid using raw types.

The Type Erasure section has more information on how the Java compiler uses raw types.

Unchecked Error Messages

As mentioned previously, when mixing legacy code with generic code, you may encounter warning messages similar to the following:

Note: Example.java uses unchecked or unsafe operations.

Note: Recompile with -Xlint:unchecked for details.

This can happen when using an older API that operates on raw types, as shown in the following example:

public class WarningDemo {
    public static void main(String[] args){
        Box<Integer> bi;
        bi = createBox();
    }

    static Box createBox(){
        return new Box();
    }
}

The term "unchecked" means that the compiler does not have enough type information to perform all type checks necessary to ensure type safety. The "unchecked" warning is disabled, by default, though the compiler gives a hint. To see all "unchecked" warnings, recompile with -Xlint:unchecked.

Recompiling the previous example with -Xlint:unchecked reveals the following additional information:

WarningDemo.java:4: warning: [unchecked] unchecked conversion
found   : Box
required: Box<java.lang.Integer>
        bi = createBox();
                      ^
1 warning

To completely disable unchecked warnings, use the -Xlint:-unchecked flag. The @SuppressWarnings("unchecked") annotation suppresses unchecked warnings. If you are unfamiliar with the @SuppressWarnings syntax, see Annotations.

Original source: Java Tutorials

If you had caught the error, you would have seen this:

jsonString, err := json.Marshal(datas)
fmt.Println(err)

// [] json: unsupported type: map[int]main.Foo

The thing is you cannot use integers as keys in JSON; it is forbidden. Instead, you can convert these values to strings beforehand, for instance using strconv.Itoa.

See this post for more details: https://stackoverflow.com/a/24284721/2679935

As if often happens, your question suffers from a serious terminological error/ambiguity. In common speech it usually doesn't matter, but in the context of this specific problem it is critically important.

You see, there's no such thing as "hex value" and "decimal value" (or "hex number" and "decimal number"). "Hex" and "decimal" are properties of representations of values. Meanwhile, values (or numbers) by themselves have no representation, so they can't be "hex" or "decimal". For example, 0xF and 15 in C syntax are two different representations of the same number.

I would guess that your question, the way it is stated, suggests that you need to convert ASCII hex representation of a value (i.e. a string) into a ASCII decimal representation of a value (another string). One way to do that is to use an integer representation as an intermediate one: first, convert ASCII hex representation to an integer of sufficient size (using functions from strto... group, like strtol), then convert the integer into the ASCII decimal representation (using sprintf).

If that's not what you need to do, then you have to clarify your question, since it is impossible to figure it out from the way your question is formulated.

Just another option for all the IE8 lovers, and it works perfect in newer browsers. You can just color the text to match the background of the input. If you have a single field, this will change the color to black when you click/focus on the field. I would not use this on a public site since it would 'confuse' most people, but I am using it in an ADMIN section where only one person has access to the users passwords.

$('#MyPass').click(function() {
    $(this).css('color', '#000000');
});

-OR-

$('#MyPass').focus(function() {
    $(this).css('color', '#000000');
});

This, also needed, will change the text back to white when you leave the field. Simple, simple, simple.

$("#MyPass").blur(function() {
    $(this).css('color', '#ffffff');
});

[ Another Option ] Now, if you have several fields that you are checking for, all with the same ID, as I am using it for, add a class of 'pass' to the fields you want to hide the text in. Set the password fields type to 'text'. This way, only the fields with a class of 'pass' will be changed.

<input type="text" class="pass" id="inp_2" value="snoogle"/>

$('[id^=inp_]').click(function() {
    if ($(this).hasClass("pass")) {
        $(this).css('color', '#000000');
    }
    // rest of code
});

Here is the second part of this. This changes the text back to white after you leave the field.

$("[id^=inp_]").blur(function() {
    if ($(this).hasClass("pass")) {
        $(this).css('color', '#ffffff');
    }
    // rest of code
});

I stumbled across this question while hitting this road block myself. I ended up writing a piece of code real quick to handle this ReDim Preserve on a new sized array (first or last dimension). Maybe it will help others who face the same issue.

So for the usage, lets say you have your array originally set as MyArray(3,5), and you want to make the dimensions (first too!) larger, lets just say to MyArray(10,20). You would be used to doing something like this right?

 ReDim Preserve MyArray(10,20) '<-- Returns Error

But unfortunately that returns an error because you tried to change the size of the first dimension. So with my function, you would just do something like this instead:

 MyArray = ReDimPreserve(MyArray,10,20)

Now the array is larger, and the data is preserved. Your ReDim Preserve for a Multi-Dimension array is complete. :)

And last but not least, the miraculous function: ReDimPreserve()

'redim preserve both dimensions for a multidimension array *ONLY
Public Function ReDimPreserve(aArrayToPreserve,nNewFirstUBound,nNewLastUBound)
    ReDimPreserve = False
    'check if its in array first
    If IsArray(aArrayToPreserve) Then       
        'create new array
        ReDim aPreservedArray(nNewFirstUBound,nNewLastUBound)
        'get old lBound/uBound
        nOldFirstUBound = uBound(aArrayToPreserve,1)
        nOldLastUBound = uBound(aArrayToPreserve,2)         
        'loop through first
        For nFirst = lBound(aArrayToPreserve,1) to nNewFirstUBound
            For nLast = lBound(aArrayToPreserve,2) to nNewLastUBound
                'if its in range, then append to new array the same way
                If nOldFirstUBound >= nFirst And nOldLastUBound >= nLast Then
                    aPreservedArray(nFirst,nLast) = aArrayToPreserve(nFirst,nLast)
                End If
            Next
        Next            
        'return the array redimmed
        If IsArray(aPreservedArray) Then ReDimPreserve = aPreservedArray
    End If
End Function

I wrote this in like 20 minutes, so there's no guarantees. But if you would like to use or extend it, feel free. I would've thought that someone would've had some code like this up here already, well apparently not. So here ya go fellow gearheads.

Although Chang's answer explains how to plot multiple times on the same figure, in this case you might be better off in this case using a groupby and unstacking:

(Assuming you have this in dataframe, with datetime index already)

In [1]: df
Out[1]:
            value  
datetime                         
2010-01-01      1  
2010-02-01      1  
2009-01-01      1  

# create additional month and year columns for convenience
df['Month'] = map(lambda x: x.month, df.index)
df['Year'] = map(lambda x: x.year, df.index)    

In [5]: df.groupby(['Month','Year']).mean().unstack()
Out[5]:
       value      
Year    2009  2010
Month             
1          1     1
2        NaN     1

Now it's easy to plot (each year as a separate line):

df.groupby(['Month','Year']).mean().unstack().plot()

You can use [ScriptIgnore]:

public class User
{
    public int Id { get; set; }
    public string Name { get; set; }
    [ScriptIgnore]
    public bool IsComplete
    {
        get { return Id > 0 && !string.IsNullOrEmpty(Name); }
    }
}

Reference here

In this case the Id and then name will only be serialized

Yes regex can certainly be used to extract part of a string. Unfortunately different flavours of *nix and different tools use slightly different Regex variants.

This sed command should work on most flavours (Tested on OS/X and Redhat)

echo '12 BBQ ,45 rofl, 89 lol' | sed  's/^.*,\([0-9][0-9]*\).*$/\1/g'

Beware the Origin Protocol Policy:

For HTTPS viewer requests that CloudFront forwards to this origin, one of the domain names in the SSL certificate on your origin server must match the domain name that you specify for Origin Domain Name. Otherwise, CloudFront responds to the viewer requests with an HTTP status code 502 (Bad Gateway) instead of returning the requested object.

In most cases, you probably want CloudFront to use "HTTP Only", since it fetches objects from a server probably hosted with Amazon too. No need for additional HTTPS complexity at this step.

Note that this is different to the Viewer Protocol Policy. You can read more about the differences between the two here.

This is a classpath issue when running an executable jar as follows:

java -jar myfile.jar

One way to fix the problem is to set the classpath on the java command line as follows, adding the missing log4j jar:

java -cp myfile.jar:log4j.jar:otherjar.jar com.abc.xyz.MyMainClass

Of course the best solution is to add the classpath into the jar manifest so that the we can use the "-jar" java option:

<jar jarfile="myfile.jar">
    ..
    ..
    <manifest>
       <attribute name="Main-Class" value="com.abc.xyz.MyMainClass"/>
       <attribute name="Class-Path" value="log4j.jar otherjar.jar"/>
    </manifest>
</jar>

The following answer demonstrates how you can use the manifestclasspath to automate the seeting of the classpath manifest entry

Cannot find Main Class in File Compiled With Ant

This is for dot net core 2.1 - after a lot of trial and error I finally got this to work flawlessly:

var url = "Hub URL goes here";

var connection = new HubConnectionBuilder()
    .WithUrl($"{url}")
    .WithAutomaticReconnect() //I don't think this is totally required, but can't hurt either
    .Build();

//Start the connection
var t = connection.StartAsync();

//Wait for the connection to complete
t.Wait();

//Make your call - but in this case don't wait for a response 
//if your goal is to set it and forget it
await connection.InvokeAsync("SendMessage", "User-Server", "Message from the server");

This code is from your typical SignalR poor man's chat client. The problem that I and what seems like a lot of other people have run into is establishing a connection before attempting to send a message to the hub. This is critical, so it is important to wait for the asynchronous task to complete - which means we are making it synchronous by waiting for the task to complete.

Be aware that when you do press your <leader> key you have only 1000ms (by default) to enter the command following it.

This is exacerbated because there is no visual feedback (by default) that you have pressed your <leader> key and vim is awaiting the command; and so there is also no visual way to know when this time out has happened.

If you add set showcmd to your vimrc then you will see your <leader> key appear in the bottom right hand corner of vim (to the left of the cursor location) and perhaps more importantly you will see it disappear when the time out happens.

The length of the timeout can also be set in your vimrc, see :help timeoutlen for more information.

You need to tell MySQL which database to use:

USE database_name;

before you create a table.

In case the database does not exist, you need to create it as:

CREATE DATABASE database_name;

followed by:

USE database_name;

See my answer to Stack Overflow question Finish All previous activities.

What you need is to add the Intent.FLAG_CLEAR_TOP. This flag makes sure that all activities above the targeted activity in the stack are finished and that one is shown.

Another thing that you need is the SINGLE_TOP flag. With this one you prevent Android from creating a new activity if there is one already created in the stack.

Just be wary that if the activity was already created, the intent with these flags will be delivered in the method called onNewIntent(intent) (you need to overload it to handle it) in the target activity.

Then in onNewIntent you have a method called restart or something that will call finish() and launch a new intent toward itself, or have a repopulate() method that will set the new data. I prefer the second approach, it is less expensive and you can always extract the onCreate logic into a separate method that you can call for populate.

You could give the row an id, e.g.

<tr id="special"> ... </tr>

and then use jquery to say something like:

$('#special').onclick(function(){ window="http://urltolinkto.com/x/y/z";})

Is there a js listener for when a user scrolls in a certain textbox that can be used?

DOM L3 UI Events spec gave the initial definition but is considered obsolete.

To add a single handler you can do:

  let isTicking;
  const debounce = (callback, evt) => {
    if (isTicking) return;
    requestAnimationFrame(() => {
      callback(evt);
      isTicking = false;
    });
    isTicking = true;
  };
  const handleScroll = evt => console.log(evt, window.scrollX, window.scrollY);
  document.defaultView.onscroll = evt => debounce(handleScroll, evt);

For multiple handlers or, if preferable for style reasons, you may use addEventListener as opposed to assigning your handler to onscroll as shown above.

If using something like _.debounce from lodash you could probably get away with:

const handleScroll = evt => console.log(evt, window.scrollX, window.scrollY);
document.defaultView.onscroll = evt => _.debounce(() => handleScroll(evt));

Review browser compatibility and be sure to test on some actual devices before calling it done.

this works for me, sudo apt-get install libx11-dev

Using the concept from waldyrious's answer, I've created the following solution that also addresses the issue of the video playing behind the image on tab restore or using the browser's back button to come back to the page with the video.

HTML

<div class="js-video-lead">
  <img class="hide" src="link/to/lead/image.jpg" />
  <iframe frameborder="0" height="240" src="https://www.youtube.com/embed/<code here>" width="426"></iframe>
</div>

The "hide" class is from Bootstrap and simply applies display: none; so that the image is not visible on page load if JavaScript is disabled.

JavaScript

function video_lead_play_state(element, active)
{
    var $active = $(element).closest(".js-video-lead").find(".btn-play-active");
    var $default = $(element).closest(".js-video-lead").find(".btn-play-default");

    if (active) {
        $active.show();
        $default.hide();
    } else {
        $active.hide();
        $default.show();
    }
}


$(document).ready(function () {
    // hide the videos and show the images
    var $videos = $(".js-video-lead iframe");
    $videos.hide();
    $(".js-video-lead > img").not(".btn-play").show();

    // position the video holders
    $(".js-video-lead").css("position", "relative");

    // prevent autoplay on load and add the play button
    $videos.each(function (index, video) {
        var $video = $(video);

        // prevent autoplay due to normal navigation
        var url = $video.attr("src");
        if (url.indexOf("&autoplay") > -1) {
            url = url.replace("&autoplay=1", "");
        } else {
            url = url.replace("?autoplay=1", "");
        }
        $video.attr("src", url).removeClass(
            "js-video-lead-autoplay"
        );

        // add and position the play button
        var top = parseInt(parseFloat($video.css("height")) / 2) - 15;
        var left = parseInt(parseFloat($video.css("width")) / 2) - 21;
        var $btn_default = $("<img />").attr("src", "play-default.png").css({
            "position": "absolute",
            "top": top + "px",
            "left": left + "px",
            "z-index": 100
        }).addClass("btn-play btn-play-default");
        var $btn_active = $("<img />").attr("src", "play-active.png").css({
            "display": "none",
            "position": "absolute",
            "top": top + "px",
            "left": left + "px",
            "z-index": 110
        }).addClass("btn-play btn-play-active");
        $(".js-video-lead").append($btn_default).append($btn_active);
    });


    $(".js-video-lead img").on("click", function (event) {
        var $holder = $(this).closest(".js-video-lead");
        var $video = $holder.find("iframe");
        var url = $video.attr("src");
        url += (url.indexOf("?") > -1) ? "&" : "?";
        url += "autoplay=1";
        $video.addClass("js-video-lead-autoplay").attr("src", url);
        $holder.find("img").remove();
        $video.show();
    });

    $(".js-video-lead > img").on("mouseenter", function (event) {
        video_lead_play_state(this, true);
    });

    $(".js-video-lead > img").not(".btn-play").on("mouseleave", function (event) {
        video_lead_play_state(this, false);
    });
});

jQuery is required for this solution and it should work with multiple embedded videos (with different lead images) on the same page.

The code utilizes two images play-default.png and play-active.png which are small (42 x 30) images of the YouTube play button. play-default.png is black with some transparency and is displayed initially. play-active.png is red and is displayed when the user moves the mouse over the image. This mimic's the expected behavior that a normal embedded YouTube video exhibits.

This is a better solution, using:

$("table tr:first-child").has('img')

Yes, generally the best way to store a file in a database is to save the byte array in a BLOB column. You will probably want a couple of columns to additionally store the file's metadata such as name, extension, and so on.

It is not always a good idea to store files in the database - for instance, the database size will grow fast if you store files in it. But that all depends on your usage scenario.

You're &ing the wrong bits. I think you want:

s = *ptr >> 31;
e = *ptr & 0x7f800000;
e >>= 23;
m = *ptr & 0x007fffff;

Remember, when you &, you are zeroing out bits that you don't set. So in this case, you want to zero out the sign bit when you get the exponent, and you want to zero out the sign bit and the exponent when you get the mantissa.

Note that the masks come directly from your picture. So, the exponent mask will look like:

0 11111111 00000000000000000000000

and the mantissa mask will look like:

0 00000000 11111111111111111111111

Guzzle implements PSR-7. That means that it will by default store the body of a message in a Stream that uses PHP temp streams. To retrieve all the data, you can use casting operator:

$contents = (string) $response->getBody();

You can also do it with

$contents = $response->getBody()->getContents();

The difference between the two approaches is that getContents returns the remaining contents, so that a second call returns nothing unless you seek the position of the stream with rewind or seek .

$stream = $response->getBody();
$contents = $stream->getContents(); // returns all the contents
$contents = $stream->getContents(); // empty string
$stream->rewind(); // Seek to the beginning
$contents = $stream->getContents(); // returns all the contents

Instead, usings PHP's string casting operations, it will reads all the data from the stream from the beginning until the end is reached.

$contents = (string) $response->getBody(); // returns all the contents
$contents = (string) $response->getBody(); // returns all the contents

Documentation: http://docs.guzzlephp.org/en/latest/psr7.html#responses

This is how we can join two Dataframes on same column names in PySpark.

df = df1.join(df2, ['col1','col2','col3'])

If you do printSchema() after this then you can see that duplicate columns have been removed.

Assuming three columns in the table: ID, NAME, ROLE

BAD: This will insert or replace all columns with new values for ID=1:

INSERT OR REPLACE INTO Employee (id, name, role) 
  VALUES (1, 'John Foo', 'CEO');

BAD: This will insert or replace 2 of the columns... the NAME column will be set to NULL or the default value:

INSERT OR REPLACE INTO Employee (id, role) 
  VALUES (1, 'code monkey');

GOOD: Use SQLite On conflict clause UPSERT support in SQLite! UPSERT syntax was added to SQLite with version 3.24.0!

UPSERT is a special syntax addition to INSERT that causes the INSERT to behave as an UPDATE or a no-op if the INSERT would violate a uniqueness constraint. UPSERT is not standard SQL. UPSERT in SQLite follows the syntax established by PostgreSQL.

GOOD but tendous: This will update 2 of the columns. When ID=1 exists, the NAME will be unaffected. When ID=1 does not exist, the name will be the default (NULL).

INSERT OR REPLACE INTO Employee (id, role, name) 
  VALUES (  1, 
            'code monkey',
            (SELECT name FROM Employee WHERE id = 1)
          );

This will update 2 of the columns. When ID=1 exists, the ROLE will be unaffected. When ID=1 does not exist, the role will be set to 'Benchwarmer' instead of the default value.

INSERT OR REPLACE INTO Employee (id, name, role) 
  VALUES (  1, 
            'Susan Bar',
            COALESCE((SELECT role FROM Employee WHERE id = 1), 'Benchwarmer')
          );

The docs indicate that numpy.correlate is not what you are looking for:

numpy.correlate(a, v, mode='valid', old_behavior=False)[source]
  Cross-correlation of two 1-dimensional sequences.
  This function computes the correlation as generally defined in signal processing texts:
     z[k] = sum_n a[n] * conj(v[n+k])
  with a and v sequences being zero-padded where necessary and conj being the conjugate.

Instead, as the other comments suggested, you are looking for a Pearson correlation coefficient. To do this with scipy try:

from scipy.stats.stats import pearsonr   
a = [1,4,6]
b = [1,2,3]   
print pearsonr(a,b)

This gives

(0.99339926779878274, 0.073186395040328034)

You can also use numpy.corrcoef:

import numpy
print numpy.corrcoef(a,b)

This gives:

[[ 1.          0.99339927]
 [ 0.99339927  1.        ]]

Extend Date class with this function

// Add (or substract if value is negative) the value, expresed in timeUnit
// to the date and return the new date.
Date.dateAdd = function(currentDate, value, timeUnit) {

    timeUnit = timeUnit.toLowerCase();
    var multiplyBy = { w:604800000,
                     d:86400000,
                     h:3600000,
                     m:60000,
                     s:1000 };
    var updatedDate = new Date(currentDate.getTime() + multiplyBy[timeUnit] * value);

    return updatedDate;
};

So you can add or substract a number of minutes, seconds, hours, days... to any date.

add_10_minutes_to_current_date = Date.dateAdd( Date(), 10, "m");
subs_1_hour_to_a_date = Date.dateAdd( date_value, -1, "h");

The following example creates a SqlConnection and a SqlTransaction. It also demonstrates how to use the BeginTransaction, Commit, and Rollback methods. The transaction is rolled back on any error, or if it is disposed without first being committed. Try/Catch error handling is used to handle any errors when attempting to commit or roll back the transaction.

private static void ExecuteSqlTransaction(string connectionString)
{
    using (SqlConnection connection = new SqlConnection(connectionString))
    {
        connection.Open();

        SqlCommand command = connection.CreateCommand();
        SqlTransaction transaction;

        // Start a local transaction.
        transaction = connection.BeginTransaction("SampleTransaction");

        // Must assign both transaction object and connection 
        // to Command object for a pending local transaction
        command.Connection = connection;
        command.Transaction = transaction;

        try
        {
            command.CommandText =
                "Insert into Region (RegionID, RegionDescription) VALUES (100, 'Description')";
            command.ExecuteNonQuery();
            command.CommandText =
                "Insert into Region (RegionID, RegionDescription) VALUES (101, 'Description')";
            command.ExecuteNonQuery();

            // Attempt to commit the transaction.
            transaction.Commit();
            Console.WriteLine("Both records are written to database.");
        }
        catch (Exception ex)
        {
            Console.WriteLine("Commit Exception Type: {0}", ex.GetType());
            Console.WriteLine("  Message: {0}", ex.Message);

            // Attempt to roll back the transaction. 
            try
            {
                transaction.Rollback();
            }
            catch (Exception ex2)
            {
                // This catch block will handle any errors that may have occurred 
                // on the server that would cause the rollback to fail, such as 
                // a closed connection.
                Console.WriteLine("Rollback Exception Type: {0}", ex2.GetType());
                Console.WriteLine("  Message: {0}", ex2.Message);
            }
        }
    }
}

See SqlTransaction Class

My use case: just tried popping onto the wrong branch and got conflicts. All I need is to undo the pop but keep it in the stash list so I can pop it out on the correct branch. I did this:

git reset HEAD --hard
git checkout my_correct_branch
git stash pop

Easy.

in my case, I was not writing reg_url with :8080 . String reg_url = "http://192.168.29.163:8080/register.php";

iTerm2 - an alternative to Terminal - has an option to use configurable system-wide hotkey to show/hide (initially set to Alt+Space, disabled by default)

If you simply need a new byte array, then use the following:

byte[] Combine(byte[] a1, byte[] a2, byte[] a3)
{
    byte[] ret = new byte[a1.Length + a2.Length + a3.Length];
    Array.Copy(a1, 0, ret, 0, a1.Length);
    Array.Copy(a2, 0, ret, a1.Length, a2.Length);
    Array.Copy(a3, 0, ret, a1.Length + a2.Length, a3.Length);
    return ret;
}

Alternatively, if you just need a single IEnumerable, consider using the C# 2.0 yield operator:

IEnumerable<byte> Combine(byte[] a1, byte[] a2, byte[] a3)
{
    foreach (byte b in a1)
        yield return b;
    foreach (byte b in a2)
        yield return b;
    foreach (byte b in a3)
        yield return b;
}

If both are not going to be modified (no adding/deleting items - modifying existing ones is fine as long as you pay heed to threading issues), you can simply pass around data.begin() + 100000 and data.begin() + 101000, and pretend that they are the begin() and end() of a smaller vector.

Or, since vector storage is guaranteed to be contiguous, you can simply pass around a 1000 item array:

T *arrayOfT = &data[0] + 100000;
size_t arrayOfTLength = 1000;

Both these techniques take constant time, but require that the length of data doesn't increase, triggering a reallocation.

Get into the habit of checking if a variable is available with isset, e.g.

if (isset($_GET['s']))
{
     //do stuff that requires 's'
}
else
{
     //do stuff that doesn't need 's'
}

You could disable notice reporting, but dealing them is good hygiene, and can allow you to spot problems you might otherwise miss.

Does replacing a character in a String with a null character even work in Java?

No.

Would this be the culprit to the funky characters?

Quite likely.

You can support both query parameters and path parameters, e.g., in the case of aggregation of resources -- when the collection of sub-resources makes sense on its own.

/departments/{id}/employees
/employees?dept=id

Query parameters can support hierarchical and non-hierarchical subsetting; path parameters are hierarchical only.

Resources can exhibit multiple hierarchies. Support short paths if you will be querying broad sub-collections that cross hierarchical boundaries.

/inventory?make=toyota&model=corolla
/inventory?year=2014

Use query parameters to combine orthogonal hierarchies.

/inventory/makes/toyota/models/corolla?year=2014
/inventory/years/2014?make=toyota&model=corolla
/inventory?make=toyota&model=corolla&year=2014

Use only path parameters in the case of composition -- when a resource doesn't make sense divorced from its parent, and the global collection of all children is not a useful resource in itself.

/words/{id}/definitions
/definitions?word=id   // not useful

To get the number of selected rows I usually use the following:

cursor.execute(sql)
count = (len(cursor.fetchall))

If you design query using the Query editor in SQL Server 2012 for example you would get this:

  SELECT        e.EmployeeID, s.CompanyName, o.ShipName
FROM            Employees AS e INNER JOIN
                         Orders AS o ON e.EmployeeID = o.EmployeeID INNER JOIN
                         Shippers AS s ON o.ShipVia = s.ShipperID
WHERE        (s.CompanyName = 'Federal Shipping')

However removing the AS does not make any difference as in the following:

 SELECT        e.EmployeeID, s.CompanyName, o.ShipName
FROM            Employees e INNER JOIN
                         Orders o ON e.EmployeeID = o.EmployeeID INNER JOIN
                         Shippers s ON o.ShipVia = s.ShipperID
WHERE        (s.CompanyName = 'Federal Shipping')

In this case use of AS is superfluous but in many other places it is needed.

Just my 2 Cents here ..

Bootstrap.yml or Bootstrap.properties is used to fetch the config from Spring Cloud Server.

For Example, in My Bootstrap.properties file I have the following Config

spring.application.name=Calculation-service
spring.cloud.config.uri=http://localhost:8888

On starting the application , It tries to fetch the configuration for the service by connecting to http://localhost:8888 and looks at Calculation-service.properties present in Spring Cloud Config server

You can validate the same from logs of Calcuation-Service when you start it up

INFO 10988 --- [ restartedMain] c.c.c.ConfigServicePropertySourceLocator : Fetching config from server at : http://localhost:8888

I am using Jackson 1.9.7 and I found that doing the following does not solve my serialization/deserialization timezone issue:

DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd'T'hh:mm:ss.SSSZ");
dateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
objectMapper.setDateFormat(dateFormat);

Instead of "2014-02-13T20:09:09.859Z" I get "2014-02-13T08:09:09.859+0000" in the JSON message which is obviously incorrect. I don't have time to step through the Jackson library source code to figure out why this occurs, however I found that if I just specify the Jackson provided ISO8601DateFormat class to the ObjectMapper.setDateFormat method the date is correct.

Except this doesn't put the milliseconds in the format which is what I want so I sub-classed the ISO8601DateFormat class and overrode the format(Date date, StringBuffer toAppendTo, FieldPosition fieldPosition) method.

/**
 * Provides a ISO8601 date format implementation that includes milliseconds
 *
 */
public class ISO8601DateFormatWithMillis extends ISO8601DateFormat {

  /**
   * For serialization
   */
  private static final long serialVersionUID = 2672976499021731672L;


  @Override
  public StringBuffer format(Date date, StringBuffer toAppendTo, FieldPosition fieldPosition)
  {
      String value = ISO8601Utils.format(date, true);
      toAppendTo.append(value);
      return toAppendTo;
  }
}

I'm not sure that I understand what you mean by "rights of ownership".

If User B owns a stored procedure, User B can grant User A permission to run the stored procedure

GRANT EXECUTE ON b.procedure_name TO a

User A would then call the procedure using the fully qualified name, i.e.

BEGIN
  b.procedure_name( <<list of parameters>> );
END;

Alternately, User A can create a synonym in order to avoid having to use the fully qualified procedure name.

CREATE SYNONYM procedure_name FOR b.procedure_name;

BEGIN
  procedure_name( <<list of parameters>> );
END;

If you are using Reactive form you can set it to default like this:

In the form model, set the value to false. So if it's checked its value will be true else false

let form = this.formBuilder.group({
    is_known: [false]
})

//In HTML

 <mat-checkbox matInput formControlName="is_known">Known</mat-checkbox>

In case that doesn't work there is another way that works especially well in Windows: Kill localhost:3000 process from Windows command line

Check Enable Live Templates and leave the cursor at the position desired and click Apply then OK

I ran into this issue as well. My fix was to create a child schema. See below for an example for your models.

---- Person model

const mongoose = require('mongoose');
const SingleFriend = require('./SingleFriend');
const Schema   = mongoose.Schema;

const productSchema = new Schema({
  friends    : [SingleFriend.schema]
});

module.exports = mongoose.model('Person', personSchema);

***Important: SingleFriend.schema -> make sure to use lowercase for schema

--- Child schema

const mongoose = require('mongoose');
const Schema   = mongoose.Schema;

const SingleFriendSchema = new Schema({
  Name: String
});

module.exports = mongoose.model('SingleFriend', SingleFriendSchema);

What you want is org.mockito.Mockito.CALLS_REAL_METHODS according to the docs:

/**
 * Optional <code>Answer</code> to be used with {@link Mockito#mock(Class, Answer)}
 * <p>
 * {@link Answer} can be used to define the return values of unstubbed invocations.
 * <p>
 * This implementation can be helpful when working with legacy code.
 * When this implementation is used, unstubbed methods will delegate to the real implementation.
 * This is a way to create a partial mock object that calls real methods by default.
 * <p>
 * As usual you are going to read <b>the partial mock warning</b>:
 * Object oriented programming is more less tackling complexity by dividing the complexity into separate, specific, SRPy objects.
 * How does partial mock fit into this paradigm? Well, it just doesn't... 
 * Partial mock usually means that the complexity has been moved to a different method on the same object.
 * In most cases, this is not the way you want to design your application.
 * <p>
 * However, there are rare cases when partial mocks come handy: 
 * dealing with code you cannot change easily (3rd party interfaces, interim refactoring of legacy code etc.)
 * However, I wouldn't use partial mocks for new, test-driven & well-designed code.
 * <p>
 * Example:
 * <pre class="code"><code class="java">
 * Foo mock = mock(Foo.class, CALLS_REAL_METHODS);
 *
 * // this calls the real implementation of Foo.getSomething()
 * value = mock.getSomething();
 *
 * when(mock.getSomething()).thenReturn(fakeValue);
 *
 * // now fakeValue is returned
 * value = mock.getSomething();
 * </code></pre>
 */

Thus your code should look like:

import org.junit.Test;
import static org.mockito.Mockito.*;
import static org.junit.Assert.*;

public class StockTest {

    public class Stock {
        private final double price;
        private final int quantity;

        Stock(double price, int quantity) {
            this.price = price;
            this.quantity = quantity;
        }

        public double getPrice() {
            return price;
        }

        public int getQuantity() {
            return quantity;
        }

        public double getValue() {
            return getPrice() * getQuantity();
        }
    }

    @Test
    public void getValueTest() {
        Stock stock = mock(Stock.class, withSettings().defaultAnswer(CALLS_REAL_METHODS));
        when(stock.getPrice()).thenReturn(100.00);
        when(stock.getQuantity()).thenReturn(200);
        double value = stock.getValue();

        assertEquals("Stock value not correct", 100.00 * 200, value, .00001);
    }
}

The call to Stock stock = mock(Stock.class); calls org.mockito.Mockito.mock(Class<T>) which looks like this:

 public static <T> T mock(Class<T> classToMock) {
    return mock(classToMock, withSettings().defaultAnswer(RETURNS_DEFAULTS));
}

The docs of the value RETURNS_DEFAULTS tell:

/**
 * The default <code>Answer</code> of every mock <b>if</b> the mock was not stubbed.
 * Typically it just returns some empty value. 
 * <p>
 * {@link Answer} can be used to define the return values of unstubbed invocations. 
 * <p>
 * This implementation first tries the global configuration. 
 * If there is no global configuration then it uses {@link ReturnsEmptyValues} (returns zeros, empty collections, nulls, etc.)
 */

History:

#include => #import => .pch => @import

[#include vs #import]
[.pch - Precompiled header]

Module - @import

Product Name == Product Module Name 

@import module declaration says to compiler to load a precompiled binary of framework which decrease a building time. Modular Framework contains .modulemap^[About]

If module feature is enabled in Xcode project #include and #import directives are automatically converted to @import that brings all advantages

You can try this id is tries

window.location.hash = '#tries';

seems like opening a new session is the key.

see this answer.

and here is an awesome explanation about this error

If you have multiple rows for parent_id.

SELECT GROUP_CONCAT(id) FROM table_level where parent_id=4 GROUP BY parent_id;

If you want to replace space with comma.

SELECT REPLACE(id,' ',',') FROM table_level where parent_id=4;

use the following code :

if(name.getText().equals(""))
{
loginbt.disable();
}

I had this problem. I debugged using node-inspector and saw that from the node_modules folder where the express source files were, ejs was not installed. So I installed it there and it worked.

npm install -g ejs didn't put it where I expected it to despite NODE_PATH being set to the same node_modules folder. Prob doing it wrong, just started with node.

Oh no no! That's not how you redirect. It's far more simpler:

public class ModHelloWorld extends HttpServlet{
    public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException{
        response.sendRedirect("http://www.google.com");
    }
}

Also, it's a bad practice to write HTML code within a servlet. You should consider putting all that markup into a JSP and invoking the JSP using:

response.sendRedirect("/path/to/mynewpage.jsp");

It depends on the Markdown rendering engine and the Markdown flavour. There is no standard for this. If you mean GitHub flavoured Markdown for example, shell should work fine. Aliases are sh, bash or zsh. You can find the list of available syntax lexers here.

Use request.args to get parsed contents of query string:

from flask import request

@app.route(...)
def login():
    username = request.args.get('username')
    password = request.args.get('password')

The database.yml is the file where you set up all the information to connect to the database. It differs depending on the kind of DB you use. You can find more information about this in the Rails Guide or any tutorial explaining how to setup a rails project.

The information in the database.yml file is scoped by environment, allowing you to get a different setting for testing, development or production. It is important that you keep those distinct if you don't want the data you use for development deleted by mistake while running your test suite.

Regarding source control, you should not commit this file but instead create a template file for other developers (called database.yml.template). When deploying, the convention is to create this database.yml file in /shared/config directly on the server.

With SVN: svn propset svn:ignore config "database.yml"

With Git: Add config/database.yml to the .gitignore file or with git-extra git ignore config/database.yml

... and now, some examples:

SQLite

adapter: sqlite3
database: db/db_dev_db.sqlite3
pool: 5
timeout: 5000

MYSQL

adapter: mysql
database: my_db
hostname: 127.0.0.1
username: root
password: 
socket: /tmp/mysql.sock
pool: 5
timeout: 5000

MongoDB with MongoID (called mongoid.yml, but basically the same thing)

host: <%= ENV['MONGOID_HOST'] %>
port: <%= ENV['MONGOID_PORT'] %>
username: <%= ENV['MONGOID_USERNAME'] %>
password: <%= ENV['MONGOID_PASSWORD'] %>
database: <%= ENV['MONGOID_DATABASE'] %>
# slaves:
#   - host: slave1.local
#     port: 27018
#   - host: slave2.local
#     port: 27019

How to get Color from Hexadecimal color code using .NET?

This I think is what you are after, hope it answers your question.

To get your code to work use Convert.ToByte instead of Convert.ToInt...

string colour = "#ffaacc";

Color.FromRgb(
Convert.ToByte(colour.Substring(1,2),16),
Convert.ToByte(colour.Substring(3,2),16),
Convert.ToByte(colour.Substring(5,2),16));

To swap characters in a string a of position l and r

def swap(a, l, r):
    a = a[0:l] + a[r] + a[l+1:r] + a[l] + a[r+1:]
    return a

Example: swap("aaabcccdeee", 3, 7) returns "aaadcccbeee"

You need to set the property server.contextPath to /myWebApp.

Check out this part of the documentation

The easiest way to set that property would be in the properties file you are using (most likely application.properties) but Spring Boot provides a whole lot of different way to set properties. Check out this part of the documentation

EDIT

As has been mentioned by @AbdullahKhan, as of Spring Boot 2.x the property has been deprecated and should be replaced with server.servlet.contextPath as has been correctly mentioned in this answer.

I disagree from @aprato answer, because the UIViewController rotation methods are declared in categories themselves, thus resulting in undefined behavior if you override then in another category. Its safer to override them in a UINavigationController (or UITabBarController) subclass

Also, this does not cover the scenario where you push / present / pop from a Landscape view into a portrait only VC or vice-versa. To solve this tough issue (never addressed by Apple), you should:

In iOS <= 4 and iOS >= 6:

UIViewController *vc = [[UIViewController alloc]init];
[self presentModalViewController:vc animated:NO];
[self dismissModalViewControllerAnimated:NO];
[vc release];

In iOS 5:

UIWindow *window = [[UIApplication sharedApplication] keyWindow];
UIView *view = [window.subviews objectAtIndex:0];
[view removeFromSuperview];
[window addSubview:view];

These will REALLY force UIKit to re-evaluate all your shouldAutorotate , supportedInterfaceOrientations, etc.

The W3Schools example isn't saying when you should use compound primary keys, and is only giving example syntax using the same example table as for other keys.

Their choice of example is perhaps misleading you by combining a meaningless key (P_Id) and a natural key (LastName). This odd choice of primary key says that the following rows are valid according to the schema and are necessary to uniquely identify a student. Intuitively this doesn't make sense.

1234     Jobs
1234     Gates

Further Reading: The great primary-key debate or just Google meaningless primary keys or even peruse this SO question

FWIW - My 2 cents is to avoid multi-column primary keys and use a single generated id field (surrogate key) as the primary key and add additional (unique) constraints where necessary.

A regular expression is what you are looking for:

let str = "foo_bar";_x000D_
console.log(str.replace(/_bar$/, ""));

In C++11 you can use std::to_string:

std::string var = "sometext" + std::to_string(somevar) + "sometext" + std::to_string(somevar);  

Devise uses some generators to generate views and stuff it needs into your application. If you have run this generator, you can easily undo it with

rails destroy <name_of_generator>

The uninstallation of the gem works as described in the other posts.

I had a column where the first and last name were both were in one column. The first and last name were separated by a comma. The code below worked. There is NO error checking/correction. Just a dumb split. Used phpMyAdmin to execute the SQL statement.

UPDATE tblAuthorList SET AuthorFirst = SUBSTRING_INDEX(AuthorLast,',',-1) , AuthorLast = SUBSTRING_INDEX(AuthorLast,',',1);

13.2.10 UPDATE Syntax

I had the same problem and I solved by using the postcast server. You can install it locally and use it.

For more detailed explanations - great documentation at that link. For example: It's easy, you only need to set up two loggers.

import sys
import logging

logger = logging.getLogger('')
logger.setLevel(logging.DEBUG)
fh = logging.FileHandler('my_log_info.log')
sh = logging.StreamHandler(sys.stdout)
formatter = logging.Formatter('[%(asctime)s] %(levelname)s [%(filename)s.%(funcName)s:%(lineno)d] %(message)s', datefmt='%a, %d %b %Y %H:%M:%S')
fh.setFormatter(formatter)
sh.setFormatter(formatter)
logger.addHandler(fh)
logger.addHandler(sh)

def hello_logger():
    logger.info("Hello info")
    logger.critical("Hello critical")
    logger.warning("Hello warning")
    logger.debug("Hello debug")

if __name__ == "__main__":
    print(hello_logger())

Output - terminal:

[Mon, 10 Aug 2020 12:44:25] INFO [TestLoger.py.hello_logger:15] Hello info
[Mon, 10 Aug 2020 12:44:25] CRITICAL [TestLoger.py.hello_logger:16] Hello critical
[Mon, 10 Aug 2020 12:44:25] WARNING [TestLoger.py.hello_logger:17] Hello warning
[Mon, 10 Aug 2020 12:44:25] DEBUG [TestLoger.py.hello_logger:18] Hello debug
None

Output - in file:

UPDATE: color terminal

Package:

pip install colorlog

Code:

import sys
import logging
import colorlog

logger = logging.getLogger('')
logger.setLevel(logging.DEBUG)
fh = logging.FileHandler('my_log_info.log')
sh = logging.StreamHandler(sys.stdout)
formatter = logging.Formatter('[%(asctime)s] %(levelname)s [%(filename)s.%(funcName)s:%(lineno)d] %(message)s', datefmt='%a, %d %b %Y %H:%M:%S')
fh.setFormatter(formatter)
sh.setFormatter(colorlog.ColoredFormatter('%(log_color)s [%(asctime)s] %(levelname)s [%(filename)s.%(funcName)s:%(lineno)d] %(message)s', datefmt='%a, %d %b %Y %H:%M:%S'))
logger.addHandler(fh)
logger.addHandler(sh)

def hello_logger():
    logger.info("Hello info")
    logger.critical("Hello critical")
    logger.warning("Hello warning")
    logger.debug("Hello debug")
    logger.error("Error message")

if __name__ == "__main__":
    hello_logger()

output:

Recommendation:

Complete logger configuration from INI file, which also includes setup for stdout and debug.log:

• handler_file
  • level=WARNING
• handler_screen
  • level=DEBUG

Since API 14 you can use the function onTrimMemory() and check for the flag TRIM_MEMORY_UI_HIDDEN. This will tell you that your Application is going to the background.

So in your custom Application class you can write something like:

override fun onTrimMemory(level: Int) {
    if (level == TRIM_MEMORY_UI_HIDDEN) {
        // Application going to background, do something
    }
}

For an in-depth study of this, I invite you to read this article: http://www.developerphil.com/no-you-can-not-override-the-home-button-but-you-dont-have-to/

I would suggest checking the drivers and updating them if required.

public <T> List<T> getIntersectOfCollections(Collection<T> first, Collection<T> second) {
        return first.stream()
                .filter(second::contains)
                .collect(Collectors.toList());
    }

Add the JSON MIME type to IIS 6. Follow the directions at MSDN's Configure MIME Types (IIS 6.0).

• Extension: .json
• MIME type: application/json

Don't forget to restart IIS after the change.

UPDATE: There are easy ways to do this on IIS7 and newer. The op specifically asked for IIS6 help so I'm leaving this answer as-is. But this answer is still getting a lot of traffic even though IIS6 is very old now. Hopefully you're using something newer, so I wanted to mention that if you have a newer IIS7 or newer version see @ProVega's answer below for a simpler solution for those newer versions.

jsonify serializes the data you pass it to JSON. If you want to serialize the data yourself, do what jsonify does by building a response with status=200 and mimetype='application/json'.

from flask import json

@app.route('/summary')
def summary():
    data = make_summary()
    response = app.response_class(
        response=json.dumps(data),
        status=200,
        mimetype='application/json'
    )
    return response

Run java with -d64 or -d32 specified, it will give you an error message if it doesn't support 64-bit or 32-bit respectively. Your JVM may support both.

The answers in this topic are all great. However i'd like to propose another one. Most likely you have been given an api and want that into your c# project. Using Postman, you can setup and test the api call there and once it runs properly, you can simply click 'Code' and the request that you have been working on, is written to a c# snippet. like this:

var client = new RestClient("https://api.XXXXX.nl/oauth/token");
client.Timeout = -1;
var request = new RestRequest(Method.POST);
request.AddHeader("Authorization", "Basic   N2I1YTM4************************************jI0YzJhNDg=");
request.AddHeader("Content-Type", "application/x-www-form-urlencoded");
request.AddHeader("Content-Type", "application/x-www-form-urlencoded");
request.AddParameter("grant_type", "password");
request.AddParameter("username", "[email protected]");
request.AddParameter("password", "XXXXXXXXXXXXX");
IRestResponse response = client.Execute(request);
Console.WriteLine(response.Content);

The code above depends on the nuget package RestSharp, which you can easily install.

Swift 2 :

this is what is did to do every thing !

close keyboard with Done button or Touch outSide ,Next for go to next input.

First Change TextFiled Return Key To Next in StoryBoard.

override func viewDidLoad() {
  txtBillIdentifier.delegate = self
  txtBillIdentifier.tag = 1
  txtPayIdentifier.delegate  = self
  txtPayIdentifier.tag  = 2

  let tap = UITapGestureRecognizer(target: self, action: "onTouchGesture")
  self.view.addGestureRecognizer(tap)

}

func textFieldShouldReturn(textField: UITextField) -> Bool {
   if(textField.returnKeyType == UIReturnKeyType.Default) {
       if let next = textField.superview?.viewWithTag(textField.tag+1) as? UITextField {
           next.becomeFirstResponder()
           return false
       }
   }
   textField.resignFirstResponder()
   return false
}

func onTouchGesture(){
    self.view.endEditing(true)
}

After playing with the timeit module, I don't like its interface, which is not so elegant compared to the following two method.

The following code is in Python 3.

The decorator method

This is almost the same with @Mike's method. Here I add kwargs and functools wrap to make it better.

def timeit(func):
    @functools.wraps(func)
    def newfunc(*args, **kwargs):
        startTime = time.time()
        func(*args, **kwargs)
        elapsedTime = time.time() - startTime
        print('function [{}] finished in {} ms'.format(
            func.__name__, int(elapsedTime * 1000)))
    return newfunc

@timeit
def foobar():
    mike = Person()
    mike.think(30)

The context manager method

from contextlib import contextmanager

@contextmanager
def timeit_context(name):
    startTime = time.time()
    yield
    elapsedTime = time.time() - startTime
    print('[{}] finished in {} ms'.format(name, int(elapsedTime * 1000)))

For example, you can use it like:

with timeit_context('My profiling code'):
    mike = Person()
    mike.think()

And the code within the with block will be timed.

Conclusion

Using the first method, you can eaily comment out the decorator to get the normal code. However, it can only time a function. If you have some part of code that you don't what to make it a function, then you can choose the second method.

For example, now you have

images = get_images()
bigImage = ImagePacker.pack(images, width=4096)
drawer.draw(bigImage)

Now you want to time the bigImage = ... line. If you change it to a function, it will be:

images = get_images()
bitImage = None
@timeit
def foobar():
    nonlocal bigImage
    bigImage = ImagePacker.pack(images, width=4096)
drawer.draw(bigImage)

Looks not so great...What if you are in Python 2, which has no nonlocal keyword.

Instead, using the second method fits here very well:

images = get_images()
with timeit_context('foobar'):
    bigImage = ImagePacker.pack(images, width=4096)
drawer.draw(bigImage)

you can insert serialized object ( array ) to mysql , example serialize($object) and you can unserize object example unserialize($object)

There is a solution to use Web Workers (as mentioned before), because they run in separate process and are not slowed down

I've written a tiny script that can be used without changes to your code - it simply overrides functions setTimeout, clearTimeout, setInterval, clearInterval.

Just include it before all your code.

more info here

public static String currencyFormat(BigDecimal n) {
    return NumberFormat.getCurrencyInstance().format(n);
}

It will use your JVM’s current default Locale to choose your currency symbol. Or you can specify a Locale.

NumberFormat.getInstance(Locale.US)

For more info, see NumberFormat class.

setState(updater[, callback]) is an async function:

https://facebook.github.io/react/docs/react-component.html#setstate

You can execute a function after setState is finishing using the second param callback like:

this.setState({
    someState: obj
}, () => {
    this.afterSetStateFinished();
});

The same can be done with hooks in React functional component:

https://github.com/the-road-to-learn-react/use-state-with-callback#usage

Look at useStateWithCallbackLazy:

import { useStateWithCallbackLazy } from 'use-state-with-callback';

const [count, setCount] = useStateWithCallbackLazy(0);

setCount(count + 1, () => {
   afterSetCountFinished();
});

There is the semicolon missing (;) after the "50%"

but you should also notice that the percentage of your div is connected to the div that contains it.

for instance:

<div id="wrapper">
  <div class="container">
   adsf
  </div>
</div>

#wrapper {
  height:100px;
}
.container
{
  width:80%;
  height:50%;
  background-color:#eee;
}

here the height of your .container will be 50px. it will be 50% of the 100px from the wrapper div.

if you have:

adsf

#wrapper {
  height:400px;
}
.container
{
  width:80%;
  height:50%;
  background-color:#eee;
}

then you .container will be 200px. 50% of the wrapper.

So you may want to look at the divs "wrapping" your ".container"...

I ran into a situation where I had to track clicks on a social media button pulled in through an iframe. A new window would be opened when the button was clicked. Here was my solution:

var iframeClick = function () {
    var isOverIframe = false,
    windowLostBlur = function () {
        if (isOverIframe === true) {
            // DO STUFF
            isOverIframe = false;
        }
    };
    jQuery(window).focus();
    jQuery('#iframe').mouseenter(function(){
        isOverIframe = true;
        console.log(isOverIframe);
    });
    jQuery('#iframe').mouseleave(function(){
        isOverIframe = false;
        console.log(isOverIframe);
    });
    jQuery(window).blur(function () {
        windowLostBlur();
    });
};
iframeClick();

Wrap in a self executing function and return

(function(){
    for(i=0;i<5;i++){
        for (j=0;j<3;j++){
            //console.log(i+' '+j);
            if (j == 2) return;
        }
    }
})()

You can download a native OpenSSL for Windows, or you can always use Cygwin.

As it is said, a picture is worth 1000 words. I say: some code is better than 1000 words. Here's the source code of HashMap. Get method:

/**
     * Implements Map.get and related methods
     *
     * @param hash hash for key
     * @param key the key
     * @return the node, or null if none
     */
    final Node<K,V> getNode(int hash, Object key) {
        Node<K,V>[] tab; Node<K,V> first, e; int n; K k;
        if ((tab = table) != null && (n = tab.length) > 0 &&
            (first = tab[(n - 1) & hash]) != null) {
            if (first.hash == hash && // always check first node
                ((k = first.key) == key || (key != null && key.equals(k))))
                return first;
            if ((e = first.next) != null) {
                if (first instanceof TreeNode)
                    return ((TreeNode<K,V>)first).getTreeNode(hash, key);
                do {
                    if (e.hash == hash &&
                        ((k = e.key) == key || (key != null && key.equals(k))))
                        return e;
                } while ((e = e.next) != null);
            }
        }
        return null;
    }

So it becomes clear that hash is used to find the "bucket" and the first element is always checked in that bucket. If not, then equals of the key is used to find the actual element in the linked list.

Let's see the put() method:

  /**
     * Implements Map.put and related methods
     *
     * @param hash hash for key
     * @param key the key
     * @param value the value to put
     * @param onlyIfAbsent if true, don't change existing value
     * @param evict if false, the table is in creation mode.
     * @return previous value, or null if none
     */
    final V putVal(int hash, K key, V value, boolean onlyIfAbsent,
                   boolean evict) {
        Node<K,V>[] tab; Node<K,V> p; int n, i;
        if ((tab = table) == null || (n = tab.length) == 0)
            n = (tab = resize()).length;
        if ((p = tab[i = (n - 1) & hash]) == null)
            tab[i] = newNode(hash, key, value, null);
        else {
            Node<K,V> e; K k;
            if (p.hash == hash &&
                ((k = p.key) == key || (key != null && key.equals(k))))
                e = p;
            else if (p instanceof TreeNode)
                e = ((TreeNode<K,V>)p).putTreeVal(this, tab, hash, key, value);
            else {
                for (int binCount = 0; ; ++binCount) {
                    if ((e = p.next) == null) {
                        p.next = newNode(hash, key, value, null);
                        if (binCount >= TREEIFY_THRESHOLD - 1) // -1 for 1st
                            treeifyBin(tab, hash);
                        break;
                    }
                    if (e.hash == hash &&
                        ((k = e.key) == key || (key != null && key.equals(k))))
                        break;
                    p = e;
                }
            }
            if (e != null) { // existing mapping for key
                V oldValue = e.value;
                if (!onlyIfAbsent || oldValue == null)
                    e.value = value;
                afterNodeAccess(e);
                return oldValue;
            }
        }
        ++modCount;
        if (++size > threshold)
            resize();
        afterNodeInsertion(evict);
        return null;
    }

It's slightly more complicated, but it becomes clear that the new element is put in the tab at the position calculated based on hash:

i = (n - 1) & hash here i is the index where the new element will be put (or it is the "bucket"). n is the size of the tab array (array of "buckets").

First, it is tried to be put as the first element of in that "bucket". If there is already an element, then append a new node to the list.

That's simple. It's explained in man bash:

/bin/bash
       The bash executable
/etc/profile
       The systemwide initialization file, executed for login shells
~/.bash_profile
       The personal initialization file, executed for login shells
~/.bashrc
       The individual per-interactive-shell startup file
~/.bash_logout
       The individual login shell cleanup file, executed when a login shell exits
~/.inputrc
       Individual readline initialization file

Login shells are the ones that are read one you login (so, they are not executed when merely starting up xterm, for example). There are other ways to login. For example using an X display manager. Those have other ways to read and export environment variables at login time.

Also read the INVOCATION chapter in the manual. It says "The following paragraphs describe how bash executes its startup files.", i think that's a spot-on :) It explains what an "interactive" shell is too.

Bash does not know about .environment. I suspect that's a file of your distribution, to set environment variables independent of the shell that you drive.

Get the string value of the date using the dateObj.toJSON() method Ref: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/toJSON Slice the date from the returned value and then increment by the number of days you want.

var currentdate = new Date();
currentdate.setDate(currentdate.getDate() + 1);
var tomorrow = currentdate.toJSON().slice(0,10);

I had a nested directory structure i.e. I had multiple directories inside the main directory that contained the python modules.

I added the following script to my __init__.py file to import all the modules

import glob, re, os 

module_parent_directory = "path/to/the/directory/containing/__init__.py/file"

owd = os.getcwd()
if not owd.endswith(module_parent_directory): os.chdir(module_parent_directory)

module_paths = glob.glob("**/*.py", recursive = True)

for module_path in module_paths:
    if not re.match( ".*__init__.py$", module_path):
        import_path = module_path[:-3]
        import_path = import_path.replace("/", ".")
        exec(f"from .{import_path} import *")

os.chdir(owd)

Probably not the best way to achieve this, but I couldn't make anything else work for me.

You can use the mounted() Vue Lifecycle Hook. This will allow you to call a method before the page loads.

This is an implementation example:

HTML:

<div id="app">
  <h1>Welcome our site {{ name }}</h1>
</div>

JS:

var app = new Vue ({
    el: '#app',
    data: {
        name: ''
    },
    mounted: function() {
        this.askName() // Calls the method before page loads
    },
    methods: {
        // Declares the method
        askName: function(){
            this.name = prompt(`What's your name?`)
        }
    }
})

This will get the prompt method's value, insert it in the variable name and output in the DOM after the page loads. You can check the code sample here.

You can read more about Lifecycle Hooks here.

If you use Mercurial, you can use the built in HTTP server. In the folder you wish to serve up:

hg serve

From the docs:

export the repository via HTTP

    Start a local HTTP repository browser and pull server.

    By default, the server logs accesses to stdout and errors to
    stderr. Use the "-A" and "-E" options to log to files.

options:

 -A --accesslog       name of access log file to write to
 -d --daemon          run server in background
    --daemon-pipefds  used internally by daemon mode
 -E --errorlog        name of error log file to write to
 -p --port            port to listen on (default: 8000)
 -a --address         address to listen on (default: all interfaces)
    --prefix          prefix path to serve from (default: server root)
 -n --name            name to show in web pages (default: working dir)
    --webdir-conf     name of the webdir config file (serve more than one repo)
    --pid-file        name of file to write process ID to
    --stdio           for remote clients
 -t --templates       web templates to use
    --style           template style to use
 -6 --ipv6            use IPv6 in addition to IPv4
    --certificate     SSL certificate file

use "hg -v help serve" to show global options

class StudentAdapter extends BaseAdapter {
    ArrayList<LichHocDTO> studentList;

    private void capNhatDuLieu(ArrayList<LichHocDTO> list){
        this.studentList.clear();
        this.studentList.addAll(list);
        this.notifyDataSetChanged();
    }
}

You can try. It work for me

You can try this:

import subprocess
import sys

process = subprocess.Popen(
    cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE
)

while True:
    out = process.stdout.read(1)
    if out == '' and process.poll() != None:
        break
    if out != '':
        sys.stdout.write(out)
        sys.stdout.flush()

If you use readline instead of read, there will be some cases where the input message is not printed. Try it with a command the requires an inline input and see for yourself.

you can try setting the padding instead of the height/width.

I would at first split the original string into an array of String with a token " (" and the String at position 0 of the output array is what you would like to have.

String[] output = originalString.split(" (");

String result = output[0];

enum MyEnum {VALUE_1,VALUE_2}

is (approximately) like saying

class MyEnum {

    public static final MyEnum VALUE_1 = new MyEnum("VALUE_1");
    public static final MyEnum VALUE_2 = new MyEnum("VALUE_2");

    private final name;

    private MyEnum(String name) {
        this.name = name;
    }

    public String name() { return this.name }
}

so I guess the all caps is strictly more correct, but still I use the class name convention since I hate all caps wherever

Managed Code

Managed code is what Visual Basic .NET and C# compilers create. It runs on the CLR (Common Language Runtime), which, among other things, offers services like garbage collection, run-time type checking, and reference checking. So, think of it as, "My code is managed by the CLR."

Visual Basic and C# can only produce managed code, so, if you're writing an application in one of those languages you are writing an application managed by the CLR. If you are writing an application in Visual C++ .NET you can produce managed code if you like, but it's optional.

Unmanaged Code

Unmanaged code compiles straight to machine code. So, by that definition all code compiled by traditional C/C++ compilers is 'unmanaged code'. Also, since it compiles to machine code and not an intermediate language it is non-portable.

No free memory management or anything else the CLR provides.

Since you cannot create unmanaged code with Visual Basic or C#, in Visual Studio all unmanaged code is written in C/C++.

Mixing the two

Since Visual C++ can be compiled to either managed or unmanaged code it is possible to mix the two in the same application. This blurs the line between the two and complicates the definition, but it's worth mentioning just so you know that you can still have memory leaks if, for example, you're using a third party library with some badly written unmanaged code.

Here's an example I found by googling:

#using <mscorlib.dll>
using namespace System;

#include "stdio.h"

void ManagedFunction()
{
    printf("Hello, I'm managed in this section\n");
}

#pragma unmanaged
UnmanagedFunction()
{
    printf("Hello, I am unmanaged through the wonder of IJW!\n");
    ManagedFunction();
}

#pragma managed
int main()
{
    UnmanagedFunction();
    return 0;
}

There are two different ways of importing components in react and the recommended way is component way

1. Library way(not recommended)
2. Component way(recommended)

PFB detail explanation

Library way of importing

import { Button } from 'react-bootstrap';
import { FlatButton } from 'material-ui';

This is nice and handy but it does not only bundles Button and FlatButton (and their dependencies) but the whole libraries.

Component way of importing

One way to alleviate it is to try to only import or require what is needed, lets say the component way. Using the same example:

import Button from 'react-bootstrap/lib/Button';
import FlatButton from 'material-ui/lib/flat-button';

This will only bundle Button, FlatButton and their respective dependencies. But not the whole library. So I would try to get rid of all your library imports and use the component way instead.

If you are not using lot of components then it should reduce considerably the size of your bundled file.

I'm not sure what you want. First of all, of course each time you commit/push the directory is going to get a little larger, since it has to store each of those additional commits.

However, probably you want git gc which will "cleanup unnecessary files and optimize the local repository" (manual page).

Another possibly relevant command is git clean which will delete untracked files from your tree (manual page).

In Python 3, / is float division

In Python 2, / is integer division (assuming int inputs)

In both 2 and 3, // is integer division

(To get float division in Python 2 requires either of the operands be a float, either as 20. or float(20))

You can tie it to button or on load of the page.

window.print();

MainAxisAlignment

start - Place the children as close to the start of the main axis as possible.

end - Place the children as close to the end of the main axis as possible.

center - Place the children as close to the middle of the main axis as possible.

spaceBetween - Place the free space evenly between the children.

spaceAround - Place the free space evenly between the children as well as half of that space before and after the first and last child.

spaceEvenly - Place the free space evenly between the children as well as before and after the first and last child.

Example:

  child: Row(
        mainAxisAlignment: MainAxisAlignment.spaceBetween,
        children: <Widget>[
          Text('Row1'),
          Text('Row2')
        ],
      )

If you don't want 'a' in the index

In :

col = ['a','b','c']

data = DataFrame([[1,2,3],[10,11,12],[20,21,22]],columns=col)

data

Out:

    a   b   c
0   1   2   3
1  10  11  12
2  20  21  22

In :

data2 = data.set_index('a')

Out:

     b   c
a
1    2   3
10  11  12
20  21  22

In :

data2.index.name = None

Out:

     b   c
 1   2   3
10  11  12
20  21  22

Use the default version:

Collections.sort(myarrayList);

Of course this requires that your Elements implement Comparable, but the same holds true for the version you mentioned.

BTW: you should use generics in your code, that way you get compile-time errors if your class doesn't implement Comparable. And compile-time errors are much better than the runtime errors you'll get otherwise.

List<MyClass> list = new ArrayList<MyClass>();
// now fill up the list

// compile error here unless MyClass implements Comparable
Collections.sort(list); 

Just use

document.getElementById('submitbutton').disabled = !cansubmit;

instead of the the if-clause that works only one-way.

Also, for the users who have JS disabled, I'd suggest to set the initial disabled by JS only. To do so, just move the script behind the <form> and call checkform(); once.

Some great examples and libs presented in this thread, but they didn't quite have what I was looking for. My approach: angular-validity -- a promise based validation lib for asynchronous validation, with optional Bootstrap styling baked-in.

An angular-validity solution for the OP's use case might look something like this:

<input  type="text" name="field4" ng-model="field4"
        validity="eval"
        validity-eval="!(field1 && field2 && field3 && !field4)"
        validity-message-eval="This field is required">

Here's a Fiddle, if you want to take it for a spin. The lib is available on GitHub, has detailed documentation, and plenty of live demos.

Make sure that the project you are trying to run has deployment target equal to or less then the SDK version of your Xcode. In my case I tried to run a project which was built using iOS8.4 but I have Xcode6.1 with SDK version 8.1

I changed the deployment target to 8.1 and it start showing me simulators.

P.S before doing this, make sure that your code and external libraries are compatible with your new deployment target, else you have to update your Xcode.

My take:

public static class SocketExtensions
{
    /// <summary>
    /// Connects the specified socket.
    /// </summary>
    /// <param name="socket">The socket.</param>
    /// <param name="endpoint">The IP endpoint.</param>
    /// <param name="timeout">The timeout.</param>
    public static void Connect(this Socket socket, EndPoint endpoint, TimeSpan timeout)
    {
        var result = socket.BeginConnect(endpoint, null, null);

        bool success = result.AsyncWaitHandle.WaitOne(timeout, true);
        if (success)
        {
            socket.EndConnect(result);
        }
        else
        {
            socket.Close();
            throw new SocketException(10060); // Connection timed out.
        }
    }
}

If what you want is to hide the navigation bar completely in the controller, a much cleaner solution is to, in the root controller, have something like:

@implementation MainViewController
- (void)viewDidLoad {
    self.navigationController.navigationBarHidden=YES;
    //...extra code on view load  
}

When you push a child view in the controller, the Navigation Bar will remain hidden; if you want to display it just in the child, you'll add the code for displaying it(self.navigationController.navigationBarHidden=NO;) in the viewWillAppear callback, and similarly the code for hiding it on viewWillDisappear

the code over it in vbnet:

dim FeToSend as new (object--> define class)

Dim client As New HttpClient
Dim content = New StringContent(FeToSend.ToString(), Encoding.UTF8,"application/json")
content.Headers.ContentType = New MediaTypeHeaderValue( "application/json" )
Dim risp = client.PostAsync(Chiamata, content).Result

msgbox(risp.tostring)

Hope this help

I use __dict__

Example:

class MyObj(object):
  def __init__(self):
    self.name = 'Chuck Norris'
    self.phone = '+6661'

obj = MyObj()
print(obj.__dict__)

# Output:  
# {'phone': '+6661', 'name': 'Chuck Norris'}

You can't change the targeted version of either Windows or the .NET Framework if you create your project in Visual Studio 2013. That option is not available anymore.

Look that link from Microsoft: http://msdn.microsoft.com/en-us/library/bb398202.aspx

Apple documentation says

A subclass version of the copyWithZone: method should send the message to super first, to incorporate its implementation, unless the subclass descends directly from NSObject.

to add to the existing answer

@interface YourClass : NSObject <NSCopying> 
{
   SomeOtherObject *obj;
}

// In the implementation
-(id)copyWithZone:(NSZone *)zone
{
  YourClass *another = [super copyWithZone:zone];
  another.obj = [obj copyWithZone: zone];

  return another;
}

just use replace:

In [106]:
df.replace('N/A',np.NaN)

Out[106]:
    x    y
0  10   12
1  50   11
2  18  NaN
3  32   13
4  47   15
5  20  NaN

What you're trying is called chain indexing: http://pandas.pydata.org/pandas-docs/stable/indexing.html#indexing-view-versus-copy

You can use loc to ensure you operate on the original dF:

In [108]:
df.loc[df['y'] == 'N/A','y'] = np.nan
df

Out[108]:
    x    y
0  10   12
1  50   11
2  18  NaN
3  32   13
4  47   15
5  20  NaN

DOM stands for Document Object Model. It is the W3C(World Wide Web Consortium) Standard. It define standard for accessing and manipulating HTML and XML document and The elements of DOM is head,title,body tag etc. So the answer of your first statement is

Statement #1 You can add multiple classes to a single DOM element.

Explanation : "div class="cssclass1 cssclass2 cssclass3"

Here tag is element of DOM and i have applied multiple classes to DOM element.

I quickly did this for anyone else coming onto this page:

<object width="425" height="344">
<param name="movie" value="http://www.youtube.com/v/u1zgFlCw8Aw?fs=1"</param>
<param name="allowFullScreen" value="true"></param>
<param name="allowScriptAccess" value="always"></param>
<embed src="http://www.youtube.com/v/u1zgFlCw8Aw?fs=1"
  type="application/x-shockwave-flash"
  allowfullscreen="true"
  allowscriptaccess="always"
  width="425" height="344">
</embed>
</object>

See the jsFiddle.

To make sure you get the call backs after the user enters text, set the delegate inside the configuration handler. textField.delegate = self

Swift 3 & 4 (iOS 10 - 11):

let alert = UIAlertController(title: "Alert", message: "Message", preferredStyle: UIAlertControllerStyle.alert)
alert.addAction(UIAlertAction(title: "Click", style: UIAlertActionStyle.default, handler: nil))
alert.addTextField(configurationHandler: {(textField: UITextField!) in
    textField.placeholder = "Enter text:"
    textField.isSecureTextEntry = true // for password input
})
self.present(alert, animated: true, completion: nil)

In Swift (iOS 8-10):

override func viewDidAppear(animated: Bool) {
    var alert = UIAlertController(title: "Alert", message: "Message", preferredStyle: UIAlertControllerStyle.Alert)
    alert.addAction(UIAlertAction(title: "Click", style: UIAlertActionStyle.Default, handler: nil))
    alert.addTextFieldWithConfigurationHandler({(textField: UITextField!) in
        textField.placeholder = "Enter text:"
        textField.secureTextEntry = true
        })
    self.presentViewController(alert, animated: true, completion: nil)
}

In Objective-C (iOS 8):

- (void) viewDidLoad 
{
    UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"Alert" message:@"Message" preferredStyle:UIAlertControllerStyleAlert];
    [alert addAction:[UIAlertAction actionWithTitle:@"Click" style:UIAlertActionStyleDefault handler:nil]];
    [alert addTextFieldWithConfigurationHandler:^(UITextField *textField) {
        textField.placeholder = @"Enter text:";
        textField.secureTextEntry = YES;
    }];
    [self presentViewController:alert animated:YES completion:nil];
}

FOR iOS 5-7:

UIAlertView * alert = [[UIAlertView alloc] initWithTitle:@"Alert" message:@"INPUT BELOW" delegate:self cancelButtonTitle:@"Hide" otherButtonTitles:nil];
alert.alertViewStyle = UIAlertViewStylePlainTextInput;
[alert show];

NOTE: Below doesn't work with iOS 7 (iOS 4 - 6 Works)

Just to add another version.

- (void)viewDidLoad{

    UIAlertView* alert = [[UIAlertView alloc] initWithTitle:@"Preset Saving..." message:@"Describe the Preset\n\n\n" delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles:@"Ok", nil];
    UITextField *textField = [[UITextField alloc] init];
    [textField setBackgroundColor:[UIColor whiteColor]];
    textField.delegate = self;
    textField.borderStyle = UITextBorderStyleLine;
    textField.frame = CGRectMake(15, 75, 255, 30);
    textField.placeholder = @"Preset Name";
    textField.keyboardAppearance = UIKeyboardAppearanceAlert;
    [textField becomeFirstResponder];
    [alert addSubview:textField];

}

then I call [alert show]; when I want it.

The method that goes along

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {         
    NSString* detailString = textField.text;
    NSLog(@"String is: %@", detailString); //Put it on the debugger
    if ([textField.text length] <= 0 || buttonIndex == 0){ 
        return; //If cancel or 0 length string the string doesn't matter
    }
    if (buttonIndex == 1) {
        ...

    }
}

Amber's answer is correct but I found it unclear; The syntax is:

git blame {commit_id} -- {path/to/file}

Note: the -- is used to separate the tree-ish sha1 from the relative file paths. ¹

For example:

git blame master -- index.html

Full credit to Amber for knowing all the things! :)

It does not cause problems but it's a trick to do the same as PreventDefault

when you're way down in the page and an anchor as:

<a href="#" onclick="fn()">click here</a>

you will jump to the top and the URL will have the anchor # as well, to avoid this we simply return false; or use javascript:void(0);

regarding your examples

<a onclick="fn()">Does not appear as a link, because there's no href</a>

just do a {text-decoration:underline;} and you will have "link a-like"

<a href="javascript:void(0)" onclick="fn()">fn is called</a>
<a href="javascript:" onclick="fn()">fn is called too!</a>

it's ok, but in your function at the end, just return false; to prevent the default behavior, you don't need to do anything more.

In AAA style using the explicitly typed initializer idiom:

#include <chrono>
#include <iostream>

int main(){
  auto start = std::chrono::high_resolution_clock::now();
  // Code to time here...
  auto end = std::chrono::high_resolution_clock::now();

  auto dur = end - start;
  auto i_millis = std::chrono::duration_cast<std::chrono::milliseconds>(dur);
  auto f_secs = std::chrono::duration_cast<std::chrono::duration<float>>(dur);
  std::cout << i_millis.count() << '\n';
  std::cout << f_secs.count() << '\n';
}

You could also you Point2D Java API class:

public static double distance(double x1, double y1, double x2, double y2)

Example:

double distance = Point2D.distance(3.0, 4.0, 5.0, 6.0);
System.out.println("The distance between the points is " + distance);

Exactly the same error may appear even with correct environment variable settings, if you copy ONLY bin directory to the installation directory. It make which work finely, and novices get stuck.

Since C++ 17 (VS2015) you can use the standard for read-write locks:

#include <shared_mutex>

typedef std::shared_mutex Lock;
typedef std::unique_lock< Lock > WriteLock;
typedef std::shared_lock< Lock > ReadLock;

Lock myLock;


void ReadFunction()
{
    ReadLock r_lock(myLock);
    //Do reader stuff
}

void WriteFunction()
{
     WriteLock w_lock(myLock);
     //Do writer stuff
}

For older version, you can use boost with the same syntax:

#include <boost/thread/locks.hpp>
#include <boost/thread/shared_mutex.hpp>

typedef boost::shared_mutex Lock;
typedef boost::unique_lock< Lock >  WriteLock;
typedef boost::shared_lock< Lock >  ReadLock;

String serial = null; 

try {
    Class<?> c = Class.forName("android.os.SystemProperties");
    Method get = c.getMethod("get", String.class);
    serial = (String) get.invoke(c, "ro.serialno");
} catch (Exception ignored) {
}

This code returns device serial number using a hidden Android API.

Following @Michelle Tilley solution, apparently it didn't work for me at first. Not sure why, maybe I am using chrome and different version of node. After did some minor tweaks, it is working for me now.

app.all('*', function(req, res, next) {
  res.header('Access-Control-Allow-Origin', '*');
  res.header('Access-Control-Allow-Methods', 'PUT, GET, POST, DELETE, OPTIONS');
  res.header('Access-Control-Allow-Headers', 'Content-Type');
  next();
});

In case someone facing similar issue as mine, this might be helpful.

You can also use the transform: scale("") option.

in bootstrap 3 here are the classes to change the text color:

<p class="text-muted">...</p> //grey
<p class="text-primary">...</p> //light blue
<p class="text-success">...</p> //green
<p class="text-info">...</p> //blue
<p class="text-warning">...</p> //orangish,yellow
<p class="text-danger">...</p> //red

Documentation under Helper classes - Contextual colors.

Bootstrap offers various table styles. Have a look at Base CSS - Tables for documentation and examples.

The following style gives great looking tables:

<table class="table table-striped table-bordered table-condensed">
  ...
</table>

You can use the pgrep command like in the following example

$ pgrep Keychain\ Access
44186

If feed isn't well-formed XML, you're supposed to reject it, no exceptions. You're entitled to call feed creator a bozo.

Otherwise you're paving way to mess that HTML ended up in.

Notice: This is for MySQLdb module in Python.

For a SELECT statement, there shouldn't be an exception for an empty recordset. Just an empty list ([]) for cursor.fetchall() and None for cursor.fetchone().

For any other statement, e.g. INSERT or UPDATE, that doesn't return a recordset, you can neither call fetchall() nor fetchone() on the cursor. Otherwise, an exception will be raised.

There's one way to distinguish between the above two types of cursors:

def yield_data(cursor):
    while True:
        if cursor.description is None:
            # No recordset for INSERT, UPDATE, CREATE, etc
            pass
        else:
            # Recordset for SELECT, yield data
            yield cursor.fetchall()
            # Or yield column names with
            # yield [col[0] for col in cursor.description]

        # Go to the next recordset
        if not cursor.nextset():
            # End of recordsets
            return

Source

Availability to instance methods

• Class instance variables are available only to class methods and not to instance methods.
• Class variables are available to both instance methods and class methods.

Inheritability

• Class instance variables are lost in the inheritance chain.
• Class variables are not.

class Vars

  @class_ins_var = "class instance variable value"  #class instance variable
  @@class_var = "class variable value" #class  variable

  def self.class_method
    puts @class_ins_var
    puts @@class_var
  end

  def instance_method
    puts @class_ins_var
    puts @@class_var
  end
end

Vars.class_method

puts "see the difference"

obj = Vars.new

obj.instance_method

class VarsChild < Vars


end

VarsChild.class_method

You can use the below code in the parent page.

<script>
    window.onunload = refreshParent;
    function refreshParent() {
      window.opener.location.reload();
    }
</script>

Try this it converts a Bitmap type image to Drawable

Drawable d = new BitmapDrawable(getResources(), bitmap);

I have so far found the game Cells to be quite satisfying.

The whole object of the game is to program a "hive mind", which is capable of surviving, breeding, and destroying its enemies.

Lots are good "minds" are provided by the author and various contributors, and it's easy to write others by looking at them.

However, the author seems to be progressing on it very slowly - the last commit was about a year ago.

Also worth mentioning, in C# the OR operator is short-circuiting. In your example, Close seems to be a property, but if it were a method, it's worth noting that:

if (ActionsLogWriter.Close() || ErrorDumpWriter.Close())

is fundamentally different from

if (ErrorDumpWriter.Close() || ActionsLogWriter.Close())

In C#, if the first expression returns true, the second expression will not be evaluated at all. Just be aware of this. It actually works to your advantage most of the time.

You could use the nth-child pseudo-selector. For example:

table.align-right-3rd-column td:nth-child(3)
{
  text-align: right;
}

Then in your table do:

<table class="align-right-3rd-column">
  <tr>
    <td></td><td></td><td></td>
    ...
  </tr>
</table>

Edit:

Unfortunately, this only works in Firefox 3.5. However, if your table only has 3 columns, you could use the sibling selector, which has much better browser support. Here's what the style sheet would look like:

table.align-right-3rd-column td + td + td
{
  text-align: right;
}

This will match any column preceded by two other columns.

Use this instead

echo $LINE | sed -e 's/12345678/$replace/g'

this works for me just simply remove the quotes

If you want to use default value for a DateTime parameter in a method, you can only use default(DateTime).

The following line will not compile:

    private void MyMethod(DateTime syncedTime = DateTime.MinValue)

This line will compile:

    private void MyMethod(DateTime syncedTime = default(DateTime))

For those using CanCanCan:

You will get this error if CanCanCan cannot find the correct params method.

For the :create action, CanCan will try to initialize a new instance with sanitized input by seeing if your controller will respond to the following methods (in order):

1. create_params
2. <model_name>_params such as article_params (this is the default convention in rails for naming your param method)
3. resource_params (a generically named method you could specify in each controller)

Additionally, load_and_authorize_resource can now take a param_method option to specify a custom method in the controller to run to sanitize input.

You can associate the param_method option with a symbol corresponding to the name of a method that will get called:

class ArticlesController < ApplicationController
  load_and_authorize_resource param_method: :my_sanitizer

  def create
    if @article.save
      # hurray
    else
      render :new
    end
  end

  private

  def my_sanitizer
    params.require(:article).permit(:name)
  end
end

source: https://github.com/CanCanCommunity/cancancan#33-strong-parameters

try this

.div
{
text-decoration:none;
font-size:16;
display:block;
padding:14px;
}

.div a:hover
{
background-color:#080808;
color:white;
}

lets say we have a anchor tag used in our code and class"div" is called in the main program. the a:hover will do the thing, it will give a vampire black color to the background and white color to the text when the mouse is moved over it that's what hover means.