Theory Difference

Cohesion

• Cohesion is an indication of relative functional strength of module.
• A cohesive module performs a single task, requiring little interaction with other components in other parts of program.
• A module having high cohesion and low coupling is said to be functionally independent of other module.

Classification of Cohesion

1.Coincidental 2.Logical 3.Temporal 4.Procedural 5.Communication 6.Sequential 7.Functional

Coupling

• Coupling is indication of relative interdependence among modules.
• Degree of coupling between two modules depends on their interface complexity.

WhatsApp has chosen Erlang a language built for writing scalable applications that are designed to withstand errors. Erlang uses an abstraction called the Actor model for it's concurrency - http://en.wikipedia.org/wiki/Actor_(programming_language) Instead of the more traditional shared memory approach, actors communicate by sending each other messages. Actors unlike threads are designed to be lightweight. Actors could be on the same machine or on different machines and the message passing abstractions works for both. A simple implementation of WhatsApp could be: Each user/device is represented as an actor. This actor is responsible for handling the inbox of the user, how it gets serialized to disk, the messages that the user sends and the messages that the user receives. Let's assume that Alice and Bob are friends on WhatsApp. So there is an an Alice actor and a Bob actor.

Let's trace a series of messages flowing back and forth:

Alice decides to message Bob. Alice's phone establishes a connection to the WhatsApp server and it is established that this connection is definitely from Alice's phone. Alice now sends via TCP the following message: "For Bob: A giant monster is attacking the Golden Gate Bridge". One of the WhatsApp front end server deserializes this message and delivers this message to the actor called Alice.

Alice the actor decides to serialize this and store it in a file called "Alice's Sent Messages", stored on a replicated file system to prevent data loss due to unpredictable monster rampage. Alice the actor then decides to forward this message to Bob the actor by passing it a message "Msg1 from Alice: A giant monster is attacking the Golden Gate Bridge". Alice the actor can retry with exponential back-off till Bob the actor acknowledges receiving the message.

Bob the actor eventually receives the message from (2) and decides to store this message in a file called "Bob's Inbox". Once it has stored this message durably Bob the actor will acknowledge receiving the message by sending Alice the actor a message of it's own saying "I received Msg1". Alice the actor can now stop it's retry efforts. Bob the actor then checks to see if Bob's phone has an active connection to the server. It does and so Bob the actor streams this message to the device via TCP.

Bob sees this message and replies with "For Alice: Let's create giant robots to fight them". This is now received by Bob the actor as outlined in Step 1. Bob the actor then repeats Step 2 and 3 to make sure Alice eventually receives the idea that will save mankind.

WhatsApp actually uses the XMPP protocol instead of the vastly superior protocol that I outlined above, but you get the point.

High-Level Design (HLD) involves decomposing a system into modules, and representing the interfaces & invocation relationships among modules. An HLD is referred to as software architecture.

LLD, also known as a detailed design, is used to design internals of the individual modules identified during HLD i.e. data structures and algorithms of the modules are designed and documented.

Now, HLD and LLD are actually used in traditional Approach (Function-Oriented Software Design) whereas, in OOAD, the system is seen as a set of objects interacting with each other.

As per the above definitions, a high-level design document will usually include a high-level architecture diagram depicting the components, interfaces, and networks that need to be further specified or developed. The document may also depict or otherwise refer to work flows and/or data flows between component systems.

Class diagrams with all the methods and relations between classes come under LLD. Program specs are covered under LLD. LLD describes each and every module in an elaborate manner so that the programmer can directly code the program based on it. There will be at least 1 document for each module. The LLD will contain - a detailed functional logic of the module in pseudo code - database tables with all elements including their type and size - all interface details with complete API references(both requests and responses) - all dependency issues - error message listings - complete inputs and outputs for a module.

I found a solution that uses JavaScript to encode the data, which is decoded in .NET (and doesn't require jQuery).

• Make the textbox an HTML element (like textarea) instead of an ASP one.
• Add a hidden field.

• Add the following JavaScript function to your header.

  function boo() { targetText = document.getElementById("HiddenField1"); sourceText = document.getElementById("userbox"); targetText.value = escape(sourceText.innerText); }

In your textarea, include an onchange that calls boo():

<textarea id="userbox"  onchange="boo();"></textarea>

Finally, in .NET, use

string val = Server.UrlDecode(HiddenField1.Value);

I am aware that this is one-way - if you need two-way you'll have to get creative, but this provides a solution if you cannot edit the web.config

Here's an example I (MC9000) came up with and use via jQuery:

$(document).ready(function () {

    $("#txtHTML").change(function () {
        var currentText = $("#txtHTML").text();
        currentText = escape(currentText); // Escapes the HTML including quotations, etc
        $("#hidHTML").val(currentText); // Set the hidden field
    });

    // Intercept the postback
    $("#btnMyPostbackButton").click(function () {
        $("#txtHTML").val(""); // Clear the textarea before POSTing
                               // If you don't clear it, it will give you
                               // the error due to the HTML in the textarea.
        return true; // Post back
    });


});

And the markup:

<asp:HiddenField ID="hidHTML" runat="server" />
<textarea id="txtHTML"></textarea>
<asp:Button ID="btnMyPostbackButton" runat="server" Text="Post Form" />

This works great. If a hacker tries to post via bypassing JavaScript, they they will just see the error. You can save all this data encoded in a database as well, then unescape it (on the server side), and parse & check for attacks before displaying elsewhere.

Architecture is more like integrating various functionalities of a System to achive one goal of the System as a whole, while design addresses each functional requirements.

For example, take example of MVVM, which is an architectural pattern. For notification functionality, MVVM uses observer Pattern, which in turn is a design pattern,

I believe this is what was asked for. I only tested this on a little endian machine under msvc. Someone plese confirm on a big endian machine.

    #define LITTLE_ENDIAN 0x41424344UL 
    #define BIG_ENDIAN    0x44434241UL
    #define PDP_ENDIAN    0x42414443UL
    #define ENDIAN_ORDER  ('ABCD') 

    #if ENDIAN_ORDER==LITTLE_ENDIAN
        #error "machine is little endian"
    #elif ENDIAN_ORDER==BIG_ENDIAN
        #error "machine is big endian"
    #elif ENDIAN_ORDER==PDP_ENDIAN
        #error "jeez, machine is PDP!"
    #else
        #error "What kind of hardware is this?!"
    #endif

As a side note (compiler specific), with an aggressive compiler you can use "dead code elimination" optimization to achieve the same effect as a compile time #if like so:

    unsigned yourOwnEndianSpecific_htonl(unsigned n)
    {
        static unsigned long signature= 0x01020304UL; 
        if (1 == (unsigned char&)signature) // big endian
            return n;
        if (2 == (unsigned char&)signature) // the PDP style
        {
            n = ((n << 8) & 0xFF00FF00UL) | ((n>>8) & 0x00FF00FFUL);
            return n;
        }
        if (4 == (unsigned char&)signature) // little endian
        {
            n = (n << 16) | (n >> 16);
            n = ((n << 8) & 0xFF00FF00UL) | ((n>>8) & 0x00FF00FFUL);
            return n;
        }
        // only weird machines get here
        return n; // ?
    }

The above relies on the fact that the compiler recognizes the constant values at compile time, entirely removes the code within if (false) { ... } and replaces code like if (true) { foo(); } with foo(); The worst case scenario: the compiler does not do the optimization, you still get correct code but a bit slower.

All of the answers (at the time of this writing) assume each of Redis, MongoDB, and perhaps an SQL-based relational database are essentially the same tool: "store data". They don't consider data models at all.

MongoDB: Complex Data

MongoDB is a document store. To compare with an SQL-driven relational database: relational databases simplify to indexed CSV files, each file being a table; document stores simplify to indexed JSON files, each file being a document, with multiple files grouped together.

JSON files are similar in structure to XML and YAML files, and to dictionaries as in Python, so think of your data in that sort of hierarchy. When indexing, the structure is the key: A document contains named keys, which contain either further documents, arrays, or scalar values. Consider the below document.

{
  _id:  0x194f38dc491a,
  Name:  "John Smith",
  PhoneNumber:
    Home: "555 999-1234",
    Work: "555 999-9876",
    Mobile: "555 634-5789"
  Accounts:
    - "379-1111"
    - "379-2574"
    - "414-6731"
}

The above document has a key, PhoneNumber.Mobile, which has value 555 634-5789. You can search through a collection of documents where the key, PhoneNumber.Mobile, has some value; they're indexed.

It also has an array of Accounts which hold multiple indexes. It is possible to query for a document where Accounts contains exactly some subset of values, all of some subset of values, or any of some subset of values. That means you can search for Accounts = ["379-1111", "379-2574"] and not find the above; you can search for Accounts includes ["379-1111"] and find the above document; and you can search for Accounts includes any of ["974-3785","414-6731"] and find the above and whatever document includes account "974-3785", if any.

Documents go as deep as you want. PhoneNumber.Mobile could hold an array, or even a sub-document (PhoneNumber.Mobile.Work and PhoneNumber.Mobile.Personal). If your data is highly structured, documents are a large step up from relational databases.

If your data is mostly flat, relational, and rigidly structured, you're better off with a relational database. Again, the big sign is whether your data models best to a collection of interrelated CSV files or a collection of XML/JSON/YAML files.

For most projects, you'll have to compromise, accepting a minor work-around in some small areas where either SQL or Document Stores don't fit; for some large, complex projects storing a broad spread of data (many columns; rows are irrelevant), it will make sense to store some data in one model and other data in another model. Facebook uses both SQL and a graph database (where data is put into nodes, and nodes are connected to other nodes); Craigslist used to use MySQL and MongoDB, but had been looking into moving entirely onto MongoDB. These are places where the span and relationship of the data faces significant handicaps if put under one model.

Redis: Key-Value

Redis is, most basically, a key-value store. Redis lets you give it a key and look up a single value. Redis itself can store strings, lists, hashes, and a few other things; however, it only looks up by name.

Cache invalidation is one of computer science's hard problems; the other is naming things. That means you'll use Redis when you want to avoid hundreds of excess look-ups to a back-end, but you'll have to figure out when you need a new look-up.

The most obvious case of invalidation is update on write: if you read user:Simon:lingots = NOTFOUND, you might SELECT Lingots FROM Store s INNER JOIN UserProfile u ON s.UserID = u.UserID WHERE u.Username = Simon and store the result, 100, as SET user:Simon:lingots = 100. Then when you award Simon 5 lingots, you read user:Simon:lingots = 100, SET user:Simon:lingots = 105, and UPDATE Store s INNER JOIN UserProfile u ON s.UserID = u.UserID SET s.Lingots = 105 WHERE u.Username = Simon. Now you have 105 in your database and in Redis, and can get user:Simon:lingots without querying the database.

The second case is updating dependent information. Let's say you generate chunks of a page and cache their output. The header shows the player's experience, level, and amount of money; the player's Profile page has a block that shows their statistics; and so forth. The player gains some experience. Well, now you have several templates:Header:Simon, templates:StatsBox:Simon, templates:GrowthGraph:Simon, and so forth fields where you've cached the output of a half-dozen database queries run through a template engine. Normally, when you display these pages, you say:

$t = GetStringFromRedis("templates:StatsBox:" + $playerName);
if ($t == null) {
  $t = BuildTemplate("StatsBox.tmpl",
                     GetStatsFromDatabase($playerName));
  SetStringInRedis("Templates:StatsBox:" + $playerName, $t);
}
print $t;

Because you just updated the results of GetStatsFromDatabase("Simon"), you have to drop templates:*:Simon out of your key-value cache. When you try to render any of these templates, your application will churn away fetching data from your database (PostgreSQL, MongoDB) and inserting it into your template; then it will store the result in Redis and, hopefully, not bother making database queries and rendering templates the next time it displays that block of output.

Redis also lets you do publisher-subscribe message queues and such. That's another topic entirely. Point here is Redis is a key-value cache, which differs from a relational database or a document store.

Conclusion

Pick your tools based on your needs. The largest need is usually data model, as that determines how complex and error-prone your code is. Specialized applications will lean on performance, places where you write everything in a mixture of C and Assembly; most applications will just handle the generalized case and use a caching system such as Redis or Memcached, which is a lot faster than either a high-performance SQL database or a document store.

Interesting artcle...

I've had a quick hunt around on google and found nothing, but you might want to check some of the comments - plenty of people seem to have had a go at implementing a simple component demo, you might want to take a look at some of theirs for inspiration:

http://www.unseen-academy.de/componentSystem.html
http://www.mcshaffry.com/GameCode/thread.php?threadid=732
http://www.codeplex.com/Wikipage?ProjectName=elephant

Also, the comments themselves seem to have a fairly in-depth discussion on how you might code up such a system.

You can't stop normal screen scraping. For better or worse, it's the nature of the web.

You can make it so no one can access certain things (including music files) unless they're logged in as a registered user. It's not too difficult to do in Apache. I assume it wouldn't be too difficult to do in IIS as well.

I understand this is an older question, but I would like to add another disadvantage of Single Page Applications:

If you build an API that returns results in a data language (such as XML or JSON) rather than a formatting language (like HTML), you are enabling greater application interoperability, for example, in business-to-business (B2B) applications. Such interoperability has great benefits but does allow people to write software to "mine" (or steal) your data. This particular disadvantage is common to all APIs that use a data language, and not to SPAs in general (indeed, an SPA that asks the server for pre-rendered HTML avoids this, but at the expense of poor model/view separation). This risk exposed by this disadvantage can be mitigated by various means, such as request limiting and connection blocking, etc.

Here is a real world example which shows front/mid/back end.

General description:

• Frontend is responsible for presenting data to user. Please note interesting quirk that you may have two different front ends associated with single backend
• Backend provides business logic/data persistence.
• Middleware (activemq in the picture) is responsible for system to system. integration between backends. Usually it is installed as separate application

Overlapping:

It is possible to have overlapping between frontend and backend. This usually leaads to long-term issues with application maintenance and scalability. Fairly common in legacy applications.

Most modern technology stacks encourage developers to have strict separation. For example in the picture you can see that backend of the first system has rest web service which is a clear separation line.

Bottlenecks

Most bottlenecks in large are caused by database/network. Databases are located in backend. As for network issues every connection goes through netowrk, so every connection has potential for being slow. With good application design these issues are avoidable to large extend.

In Web-"MVC" you can do whatever you please.

The original concept ⁽¹⁾ described the model as the business logic. It should represent the application state and enforce some data consistency. That approach is often described as "fat model".

Most PHP frameworks follow a more shallow approach, where the model is just a database interface. But at the very least these models should still validate the incoming data and relations.

Either way, you're not very far off if you separate the SQL stuff or database calls into another layer. This way you only need to concern yourself with the real data/behaviour, not with the actual storage API. (It's however unreasonable to overdo it. You'll e.g. never be able to replace a database backend with a filestorage if that wasn't designed ahead.)

The principle behind Data Transfer Object is to create new Data Objects that only include the necessary properties you need for a specific data transaction.

Benefits include:

Make data transfer more secure Reduce transfer size if you remove all unnecessary data.

Read More: https://www.codenerd.co.za/what-is-data-transfer-objects

Sounds like the same to me! Though I don't totally disagree with Oli. I'd give a selected few people the Software Architect title if they want it but experience tells me the people who would actually deserve the title of Software Architect usually aint that in to titles.

Well, according to Google's lectures (maybe here, I don't remember) , you should consider using Fragments whenever it's possible, as it makes your code easier to maintain and control.

However, I think that on some cases it can get too complex, as the activity that hosts the fragments need to navigate/communicate between them.

I think you should decide by yourself what's best for you. It's usually not that hard to convert an activity to a fragment and vice versa.

I've created a post about this dillema here, if you wish to read some further.

I note two usages which I couldn't find explicitly in the answers.

Grouping Class Items

Some developers use comments to separate different "parts" of their class. For example, a team might use the following convention:

public class MyClass{  
  //Member variables
  //Constructors
  //Properties
  //Methods
}

With partial classes, we can go a step further, and split the sections into separate files. As a convention, a team might suffix each file with the section corresponding to it. So in the above we would have something like: MyClassMembers.cs, MyClassConstructors.cs, MyClassProperties.cs, MyClassMethods.cs.

As other answers alluded to, whether or not it's worth splitting the class up probably depends on how big the class is in this case. If it's small, it's probably easier to have everything in one master class. But if any of those sections get too big, its content can be moved to a separate partial class, in order to keep the master class neat. A convention in that case might be to leave a comment in saying something like "See partial class" after the section heading e.g.:

//Methods - See partial class

Managing Scope of Using statements / Namespace

This is probably a rare occurrence, but there might be a namespace collision between two functions from libraries that you want to use. In a single class, you could at most use a using clause for one of these. For the other you'd need a fully qualified name or an alias. With partial classes, since each namespace & using statements list is different, one could separate the two sets of functions into two separate files.

Tiers are nothing but the separation of concerns and in general the presentation layer (the forms or pages that is visible to the user) is separated from the data tier (the class or file interact with the database). This separation is done in order to improve the maintainability, scalability, re-usability, flexibility and performance as well.

A good explanations with demo code of 3-tier and 4-tier architecture can be read at http://www.dotnetfunda.com/articles/article71.aspx

Well Facebook has undergone MANY many changes and it wasn't originally designed to be efficient. It was designed to do it's job. I have absolutely no idea what the code looks like and you probably won't find much info about it (for obvious security and copyright reasons), but just take a look at the API. Look at how often it changes and how much of it doesn't work properly, anymore, or at all.

I think the biggest ace up their sleeve is the Hiphop. http://developers.facebook.com/blog/post/358 You can use HipHop yourself: https://github.com/facebook/hiphop-php/wiki

But if you ask me it's a very ambitious and probably time wasting task. Hiphop only supports so much, it can't simply convert everything to C++. So what does this tell us? Well, it tells us that Facebook is NOT fully taking advantage of the PHP language. It's not using the latest 5.3 and I'm willing to bet there's still a lot that is PHP 4 compatible. Otherwise, they couldn't use HipHop. HipHop IS A GOOD IDEA and needs to grow and expand, but in it's current state it's not really useful for that many people who are building NEW PHP apps.

There's also PHP to JAVA via things like Resin/Quercus. Again, it doesn't support everything...

Another thing to note is that if you use any non-standard PHP module, you aren't going to be able to convert that code to C++ or Java either. However...Let's take a look at PHP modules. They are ARE compiled in C++. So if you can build PHP modules that do things (like parse XML, etc.) then you are basically (minus some interaction) working at the same speed. Of course you can't just make a PHP module for every possible need and your entire app because you would have to recompile and it would be much more difficult to code, etc.

However...There are some handy PHP modules that can help with speed concerns. Though at the end of the day, we have this awesome thing known as "the cloud" and with it, we can scale our applications (PHP included) so it doesn't matter as much anymore. Hardware is becoming cheaper and cheaper. Amazon just lowered it's prices (again) speaking of.

So as long as you code your PHP app around the idea that it will need to one day scale...Then I think you're fine and I'm not really sure I'd even look at Facebook and what they did because when they did it, it was a completely different world and now trying to hold up that infrastructure and maintain it...Well, you get things like HipHop.

Now how is HipHop going to help you? It won't. It can't. You're starting fresh, you can use PHP 5.3. I'd highly recommend looking into PHP 5.3 frameworks and all the new benefits that PHP 5.3 brings to the table along with the SPL libraries and also think about your database too. You're most likely serving up content from a database, so check out MongoDB and other types of databases that are schema-less and document-oriented. They are much much faster and better for the most "common" type of web site/app.

Look at NEW companies like Foursquare and Smugmug and some other companies that are utilizing NEW technology and HOW they are using it. For as successful as Facebook is, I honestly would not look at them for "how" to build an efficient web site/app. I'm not saying they don't have very (very) talented people that work there that are solving (their) problems creatively...I'm also not saying that Facebook isn't a great idea in general and that it's not successful and that you shouldn't get ideas from it....I'm just saying that if you could view their entire source code, you probably wouldn't benefit from it.

Unlike the strong typed nature in Java. Python's duck typing behavior makes it so easy to pass objects around.

Java developers are focusing on the constructing the class strcuture and relation between objects, while keeping things flexible. IoC is extremely important for achieving this.

Python developers are focusing on getting the work done. They just wire up classes when they need it. They don't even have to worry about the type of the class. As long as it can quack, it's a duck! This nature leaves no room for IoC.

It's my understanding that N-Tier separates business logic, client access and data from each other using separate physical machines. The theory is that one of them can be updated independently of the others.

It seems you're actually talking about an MVC (Model-View-Controller) pattern, where logic is separated into various "tiers". Django, as a framework, follows MVC (loosely). You have models that contain your business logic and relate directly to tables in your database, views which in effect act like the controller, handling requests and returning responses, and finally, templates which handle presentation.

Django isn't just one of these, it is a complete framework for application development and provides all the tools you need for that purpose.

Frontend vs Backend is all semantics. You could potentially build a Django app that is entirely "backend", using its built-in admin contrib package to manage the data for an entirely separate application. Or, you could use it solely for "frontend", just using its views and templates but using something else entirely to manage the data. Most usually, it's used for both. The built-in admin (the "backend"), provides an easy way to manage your data and you build apps within Django to present that data in various ways. However, if you were so inclined, you could also create your own "backend" in Django. You're not forced to use the default admin.

Just to help anyone with this problem (locking requests when executing another one from the same session)...

Today I started to solve this issue and, after some hours of research, I solved it by removing the Session_Start method (even if empty) from the Global.asax file.

This works in all projects I've tested.

"REST" is an architectural paradigm. "RESTful" describes using that paradigm.

I've found a definition that says that Layers are a logical separation and tiers are a physical separation.

-contains worked for me

$pathToCheck = "c:\some path\to\a\file.txt"

$env:Path - split ';' -contains $pathToCheck

To add the path when it does not exist yet I use

$pathToCheck = "c:\some path\to\a\file.txt"

if(!($env:Path -split ';' -contains $vboxPath)) {
  $documentsDir = [Environment]::GetFolderPath("MyDocuments")
  $profileFilePath = Join-Path $documentsDir "WindowsPowerShell/profile.ps1"
  Out-File -FilePath $profileFilePath -Append -Force -Encoding ascii -InputObject "`$env:Path += `";$pathToCheck`""
  Invoke-Expression -command $profileFilePath
}

The code posted above by @BrunoS did not work for me,

* {
  .border-radius(0) !important;
}

what i used was

* {
  border-radius: 0 !important;
}

I hope this helps someone

You probably mean a truth table for the boolean operators, which displays the result of the usual boolean operations (&&, ||). This table is not language-specific, but can be found e.g. here.

$('#myDiv').text()

Although you'd be better off doing something like:

var txt = $('#myDiv p').text();_x000D_
alert(txt);

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>_x000D_
<div id="myDiv"><p>Some Text</p></div>

Make sure you're linking to your jQuery file too :)

I ran into a similar need. I wanted something that will give me easy transformation from/to JSON that is coming from a REST api call to/from specific class definition. The solutions that I've found were insufficient or meant to rewrite my classes' code and adding annotations or similars.

I wanted something like GSON is used in Java to serialize/deserialize classes to/from JSON objects.

Combined with a later need, that the converter will function in JS as well, I ended writing my own package.

It has though, a little bit of overhead. But when started it is very convenient in adding and editing.

You initialize the module with :

1. conversion schema - allowing to map between fields and determine how the conversion will be done
2. Classes map array
3. Conversion functions map - for special conversions.

Then in your code, you use the initialized module like :

const convertedNewClassesArray : MyClass[] = this.converter.convert<MyClass>(jsonObjArray, 'MyClass');

const convertedNewClass : MyClass = this.converter.convertOneObject<MyClass>(jsonObj, 'MyClass');

or , to JSON :

const jsonObject = this.converter.convertToJson(myClassInstance);

Use this link to the npm package and also a detailed explanation to how to work with the module: json-class-converter

Also wrapped it for
Angular use in : angular-json-class-converter

Just to save you too much typos:

foreach($group_membership as $username){
        $username->items = array(additional array to add);
    }
    print_r($group_membership);

Here's my short summary.

If you want to write a unit test, don't use a Spring applicationContext because you don't want any real dependencies injected in the class you are unit testing. Instead use mocks, either with the @RunWith(MockitoJUnitRunner.class) annotation on top of the class, or with MockitoAnnotations.initMocks(this) in the @Before method.

If you want to write an integration test, use:

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("yourTestApplicationContext.xml")

To set up your application context with an in-memory database for example. Normally you don't use mocks in integration tests, but you could do it by using the MockitoAnnotations.initMocks(this) approach described above.

You could use a combination of the UNIX_TIMESTAMP() function to do that.

SELECT ... FROM ... WHERE UNIX_TIMESTAMP() - UNIX_TIMESTAMP(thefield) < 259200

Check out the solutions at "The Controls collection cannot be modified because the control contains code blocks"

The accepted solution on the other question worked for me -- change instances of <%= to <%#, which converts the code block from Response.Write to an evaluation block, which isn't restricted by the same limitations.

In this case though, like the accepted solution here suggests, you should add the controls to something other than a masterpage ContentPlaceHolder element, namely the asp:Placeholder control suggested.

I'll list things I did that did not work for me and finally what did

First, the accepted answer of Run script only when installing did not work.

Deleting derived data did not work.

What did work:

1. I added a new build phase in Build Phases

2. New Copy Files Phase

3. Drag & Drop the chosen framework into the drop target

4. Set the 'Destination' to Frameworks

Credit due to Kevin Le's Medium post

The syntax to disable an HTML input is as follows:

<input type="text" id="input_id" DISABLED />

var streetaddress= addy.substr(0, addy.indexOf(',')); 

While it's not the best place for definitive information on what each method does (mozilla developer network is better for that) w3schools.com is good for introducing you to syntax.

I can see many answers, not really addressing the three questions of the OP.

1) A word on performance: byte arrays are likely unefficient unless you can use an exact pixel byte ordering which matches to your display adapters current resolution and color depth.

To achieve the best drawing performance, simply convert your image to a BufferedImage which is generated with a type corresponding to your current graphics configuration. See createCompatibleImage at https://docs.oracle.com/javase/tutorial/2d/images/drawonimage.html

These images will be automatically cached on the display card memory after drawing a few times without any programming effort (this is standard in Swing since Java 6), and therefore the actual drawing will take negligible amount of time - if you did not change the image.

Altering the image will come with an additional memory transfer between main memory and GPU memory - which is slow. Avoid "redrawing" the image into a BufferedImage therefore, avoid doing getPixel and setPixel at all means.

For example, if you are developing a game, instead of drawing all the game actors to a BufferedImage and then to a JPanel, it is a lot faster to load all actors as smaller BufferedImages, and draw them one by one in your JPanel code at their proper position - this way there is no additional data transfer between the main memory and GPU memory except of the initial transfer of the images for caching.

ImageIcon will use a BufferedImage under the hood - but basically allocating a BufferedImage with the proper graphics mode is the key, and there is no effort to do this right.

2) The usual way of doing this is to draw a BufferedImage in an overridden paintComponent method of the JPanel. Although Java supports a good amount of additional goodies such as buffer chains controlling VolatileImages cached in the GPU memory, there is no need to use any of these since Java 6 which does a reasonably good job without exposing all of these details of GPU acceleration.

Note that GPU acceleration may not work for certain operations, such as stretching translucent images.

3) Do not add. Just paint it as mentioned above:

@Override
protected void paintComponent(Graphics g) {
    super.paintComponent(g);
    g.drawImage(image, 0, 0, this); 
}

"Adding" makes sense if the image is part of the layout. If you need this as a background or foreground image filling the JPanel, just draw in paintComponent. If you prefer brewing a generic Swing component which can show your image, then it is the same story (you may use a JComponent and override its paintComponent method) - and then add this to your layout of GUI components.

4) How to convert the array to a Bufferedimage

Converting your byte arrays to PNG, then loading it is quite resource intensive. A better way is to convert your existing byte array to a BufferedImage.

For that: do not use for loops and copy pixels. That is very very slow. Instead:

• learn the preferred byte structure of the BufferedImage (nowadays it is safe to assume RGB or RGBA, which is 4 bytes per pixel)
• learn the scanline and scansize in use (e.g. you might have a 142 pixels wide image - but in the real life that will be stored as a 256 pixel wide byte array since it is faster to process that and mask the unused pixes by the GPU hardware)
• then once you have an array build according to these principles, the setRGB array method of the BufferedImage can copy your array to the BufferedImage.

You are apparently using Django.

You are probably better off just using models.IntegerField() instead of models.TextField(). Not only will it do the check for you, but it will give you the error message translated in several langs, and it will cast the value from it's type in the database to the type in your Python code transparently.

A naive approach could look like this:

#include <map>
#include <sstream>
#include <stdexcept>
#include <string>

std::map<std::string, std::string> options; // global?

void parse(std::istream & cfgfile)
{
    for (std::string line; std::getline(cfgfile, line); )
    {
        std::istringstream iss(line);
        std::string id, eq, val;

        bool error = false;

        if (!(iss >> id))
        {
            error = true;
        }
        else if (id[0] == '#')
        {
            continue;
        }
        else if (!(iss >> eq >> val >> std::ws) || eq != "=" || iss.get() != EOF)
        {
            error = true;
        }

        if (error)
        {
            // do something appropriate: throw, skip, warn, etc.
        }
        else
        {
            options[id] = val;
        }
    }
}

Now you can access each option value from the global options map anywhere in your program. If you want castability, you could make the mapped type a boost::variant.

This will work if you do not have too many expressions.

Example: ng-show="form.type === 'Limited Company' || form.type === 'Limited Partnership'"

For any more expressions than this use a controller.

I've always thought Kohana did a pretty good job of it.

public static function title($title, $separator = '-', $ascii_only = FALSE)
{
if ($ascii_only === TRUE)
{
// Transliterate non-ASCII characters
$title = UTF8::transliterate_to_ascii($title);

// Remove all characters that are not the separator, a-z, 0-9, or whitespace
$title = preg_replace('![^'.preg_quote($separator).'a-z0-9\s]+!', '', strtolower($title));
}
else
{
// Remove all characters that are not the separator, letters, numbers, or whitespace
$title = preg_replace('![^'.preg_quote($separator).'\pL\pN\s]+!u', '', UTF8::strtolower($title));
}

// Replace all separator characters and whitespace by a single separator
$title = preg_replace('!['.preg_quote($separator).'\s]+!u', $separator, $title);

// Trim separators from the beginning and end
return trim($title, $separator);
}

The handy UTF8::transliterate_to_ascii() will turn stuff like ñ => n.

Of course, you could replace the other UTF8::* stuff with mb_* functions.

I faced the same issue. I had entered http://www.example.com in the App settings. When anybody accessed my website using the full URL, Facebook Login worked fine. But if somebody typed in the URL without www in the browser, Facebook Login failed with this error message. When I changed the App Setting to http://example.com everything started working fine.

If you are using Facebook inside app check for provider tag inside AndroidManifest file and check your project Id is correct for android:authorities

<provider android:name="com.facebook.FacebookContentProvider" android:authorities="com.facebook.app.FacebookContentProvider112623702612345" android:exported="true" />

This:

    <div class="details @(Model.Details.Count > 0 ? "show" : "hide")">

will render this:

    <div class="details hide">

and is the mark-up I want.

The reason why Pycharm make it as a warning because Python will pass self as the first argument when calling a none static method (not add @staticmethod). Pycharm knows it.

Example:

class T:
    def test():
        print "i am a normal method!"

t = T()
t.test()
output:
Traceback (most recent call last):
  File "F:/Workspace/test_script/test.py", line 28, in <module>
    T().test()
TypeError: test() takes no arguments (1 given)

I'm from Java, in Java "self" is called "this", you don't need write self(or this) as argument in class method. You can just call self as you need inside the method. But Python "has to" pass self as a method argument.

By understanding this you don't need any Workaround as @BobStein answer.

As you mentioned, there could be two below versions of defining a List:

1. List<? extends Map<String, String>>
2. List<?>

2 is very open. It can hold any object type. This may not be useful in case you want to have a map of a given type. In case someone accidentally puts a different type of map, for example, Map<String, int>. Your consumer method might break.

In order to ensure that List can hold objects of a given type, Java generics introduced ? extends. So in #1, the List can hold any object which is derived from Map<String, String> type. Adding any other type of data would throw an exception.

If you have already installed Visual Studio Build Tools (as in other comments), and upgraded setuptools but it still doesn't work:

Make sure to run pip under x86 or x64 Native Tools Command Prompt.

It can be found under VS folder in Windows start menu. The default command line prompt may NOT provide Pip the path to the VS build tool, as is in my case.

Just use queuecomplete that's what its there for and its so so simple. Check the docs http://www.dropzonejs.com/

queuecomplete > Called when all files in the queue finished uploading.

      this.on("queuecomplete", function (file) {
          alert("All files have uploaded ");
      });

In my experience it's best to put as much code as you can into well-named modules, and only put as much code as you need to into the actual worksheet objects.

Example: Any code that uses worksheet events like Worksheet_SelectionChange or Worksheet_Calculate.

you'd use another join, something along these lines:

SELECT toD.dom_url AS ToURL, 
    fromD.dom_url AS FromUrl, 
    rvw.*

FROM reviews AS rvw

LEFT JOIN domain AS toD 
    ON toD.Dom_ID = rvw.rev_dom_for

LEFT JOIN domain AS fromD 
    ON fromD.Dom_ID = rvw.rev_dom_from

EDIT:

All you're doing is joining in the table multiple times. Look at the query in the post: it selects the values from the Reviews tables (aliased as rvw), that table provides you 2 references to the Domain table (a FOR and a FROM).

At this point it's a simple matter to left join the Domain table to the Reviews table. Once (aliased as toD) for the FOR, and a second time (aliased as fromD) for the FROM.

Then in the SELECT list, you will select the DOM_URL fields from both LEFT JOINS of the DOMAIN table, referencing them by the table alias for each joined in reference to the Domains table, and alias them as the ToURL and FromUrl.

For more info about aliasing in SQL, read here.

You can do something like req.param('tagId')

if (discount||0) != 0
  #...
end

If you want a more robust solution with ShellExecute that will open ANY file, folder or URL using the default OS associated program to do so, here is a function taken from http://access.mvps.org/access/api/api0018.htm:

'************ Code Start **********
' This code was originally written by Dev Ashish.
' It is not to be altered or distributed,
' except as part of an application.
' You are free to use it in any application,
' provided the copyright notice is left unchanged.
'
' Code Courtesy of
' Dev Ashish
'
Private Declare Function apiShellExecute Lib "shell32.dll" _
    Alias "ShellExecuteA" _
    (ByVal hwnd As Long, _
    ByVal lpOperation As String, _
    ByVal lpFile As String, _
    ByVal lpParameters As String, _
    ByVal lpDirectory As String, _
    ByVal nShowCmd As Long) _
    As Long

'***App Window Constants***
Public Const WIN_NORMAL = 1         'Open Normal
Public Const WIN_MAX = 3            'Open Maximized
Public Const WIN_MIN = 2            'Open Minimized

'***Error Codes***
Private Const ERROR_SUCCESS = 32&
Private Const ERROR_NO_ASSOC = 31&
Private Const ERROR_OUT_OF_MEM = 0&
Private Const ERROR_FILE_NOT_FOUND = 2&
Private Const ERROR_PATH_NOT_FOUND = 3&
Private Const ERROR_BAD_FORMAT = 11&

'***************Usage Examples***********************
'Open a folder:     ?fHandleFile("C:\TEMP\",WIN_NORMAL)
'Call Email app:    ?fHandleFile("mailto:[email protected]",WIN_NORMAL)
'Open URL:          ?fHandleFile("http://home.att.net/~dashish", WIN_NORMAL)
'Handle Unknown extensions (call Open With Dialog):
'                   ?fHandleFile("C:\TEMP\TestThis",Win_Normal)
'Start Access instance:
'                   ?fHandleFile("I:\mdbs\CodeNStuff.mdb", Win_NORMAL)
'****************************************************

Function fHandleFile(stFile As String, lShowHow As Long)
Dim lRet As Long, varTaskID As Variant
Dim stRet As String
    'First try ShellExecute
    lRet = apiShellExecute(hWndAccessApp, vbNullString, _
            stFile, vbNullString, vbNullString, lShowHow)

    If lRet > ERROR_SUCCESS Then
        stRet = vbNullString
        lRet = -1
    Else
        Select Case lRet
            Case ERROR_NO_ASSOC:
                'Try the OpenWith dialog
                varTaskID = Shell("rundll32.exe shell32.dll,OpenAs_RunDLL " _
                        & stFile, WIN_NORMAL)
                lRet = (varTaskID <> 0)
            Case ERROR_OUT_OF_MEM:
                stRet = "Error: Out of Memory/Resources. Couldn't Execute!"
            Case ERROR_FILE_NOT_FOUND:
                stRet = "Error: File not found.  Couldn't Execute!"
            Case ERROR_PATH_NOT_FOUND:
                stRet = "Error: Path not found. Couldn't Execute!"
            Case ERROR_BAD_FORMAT:
                stRet = "Error:  Bad File Format. Couldn't Execute!"
            Case Else:
        End Select
    End If
    fHandleFile = lRet & _
                IIf(stRet = "", vbNullString, ", " & stRet)
End Function
'************ Code End **********

Just put this into a separate module and call fHandleFile() with the right parameters.

I had a similar error but with different context when I uploaded a *.p file to Google Drive. I tried to use it later in a Google Colab session, and got this error:

    1 with open("/tmp/train.p", mode='rb') as training_data:
----> 2     train = pickle.load(training_data)
UnpicklingError: invalid load key, '<'.

I solved it by compressing the file, upload it and then unzip on the session. It looks like the pickle file is not saved correctly when you upload/download it so it gets corrupted.

I find this method saves a lot of typing, and prevents a lot of typos.

string nl = "\r\n";

txtOutput.Text = "First line" + nl + "Second line" + nl + "Third line";

The same problem was coming for my phone and this resolved the problem:

• Go to Application Manager/ Apps from Settings.

• Select Google Play Services.

• Click Uninstall Updates button to the right of the Force Stop button.

• Once the updates are uninstalled, you should see Disable button which means you are done.

You will see lots of free space available now.

I found this question searching for "copy files into the application folder at compile time". OP seems to have this sorted already, but if you don't:

In Visual Studio right-click the file, select properties, then change the option 'copy to output' to 'always'. See http://msdn.microsoft.com/en-us/library/0c6xyb66.aspx

  for(var key in substr)
{
     // do something with substr[key];

} 

In my case it allows me to apply a CSS stylesheet without worrying about copying associated images, since they're already embedded inside.

git reset does know five "modes": soft, mixed, hard, merge and keep. I will start with the first three, since these are the modes you'll usually encounter. After that you'll find a nice little a bonus, so stay tuned.

soft

When using git reset --soft HEAD~1 you will remove the last commit from the current branch, but the file changes will stay in your working tree. Also the changes will stay on your index, so following with a git commit will create a commit with the exact same changes as the commit you "removed" before.

mixed

This is the default mode and quite similar to soft. When "removing" a commit with git reset HEAD~1 you will still keep the changes in your working tree but not on the index; so if you want to "redo" the commit, you will have to add the changes (git add) before commiting.

hard

When using git reset --hard HEAD~1 you will lose all uncommited changes in addition to the changes introduced in the last commit. The changes won't stay in your working tree so doing a git status command will tell you that you don't have any changes in your repository.

Tread carefully with this one. If you accidentally remove uncommited changes which were never tracked by git (speak: committed or at least added to the index), you have no way of getting them back using git.

Bonus

keep

git reset --keep HEAD~1 is an interesting and useful one. It only resets the files which are different between the current HEAD and the given commit. It aborts the reset if one or more of these files has uncommited changes. It basically acts as a safer version of hard.

You can read more about that in the git reset documentation.

Note
When doing git reset to remove a commit the commit isn't really lost, there just is no reference pointing to it or any of it's children. You can still recover a commit which was "deleted" with git reset by finding it's SHA-1 key, for example with a command such as git reflog.

Might be super trivial but worth a check prior to waste some time.

At my case the mysql service was down.

When you have a java app including JPA / Hibernate it is checking the database connection on startup. Just found out by looking into the looks where it had an entity manager error.

You may write dynamic script tags (using Prototype):

new Element("script", {src: "myBigCodeLibrary.js", type: "text/javascript"});

The problem here is that we do not know when the external script file is fully loaded.

We often want our dependant code on the very next line and like to write something like:

if (iNeedSomeMore) {
    Script.load("myBigCodeLibrary.js"); // includes code for myFancyMethod();
    myFancyMethod(); // cool, no need for callbacks!
}

There is a smart way to inject script dependencies without the need of callbacks. You simply have to pull the script via a synchronous AJAX request and eval the script on global level.

If you use Prototype the Script.load method looks like this:

var Script = {
    _loadedScripts: [],
    include: function(script) {
        // include script only once
        if (this._loadedScripts.include(script)) {
            return false;
        }
        // request file synchronous
        var code = new Ajax.Request(script, {
            asynchronous: false,
            method: "GET",
            evalJS: false,
            evalJSON: false
        }).transport.responseText;
        // eval code on global level
        if (Prototype.Browser.IE) {
            window.execScript(code);
        } else if (Prototype.Browser.WebKit) {
            $$("head").first().insert(Object.extend(
                new Element("script", {
                    type: "text/javascript"
                }), {
                    text: code
                }
            ));
        } else {
            window.eval(code);
        }
        // remember included script
        this._loadedScripts.push(script);
    }
};

Same problem fetch main problem in PreparedStatement use simple statement then you successfully insert record same use below.

String  st2="insert into 
user(gender,name,address,telephone,fax,email,
     destination,sdate,edate,Participant,hcategory,
     Culture,Nature,People,Cities,Beaches,Festivals,username,password) 
values('"+gender+"','"+name+"','"+address+"','"+phone+"','"+fax+"',
       '"+email+"','"+desti+"','"+sdate+"','"+edate+"','"+parti+"',
       '"+hotel+"','"+chk1+"','"+chk2+"','"+chk3+"','"+chk4+"',
       '"+chk5+"','"+chk6+"','"+user+"','"+password+"')";


int i=stm.executeUpdate(st2);

On onItemClick :

String text = parent.getItemAtPosition(position).toString();

In this piece of code the height of left panel will gets adjusted to the height of right panel dynamically...

function resizeDiv() {
var rh=$('.pright').height()+'px'.toString();
$('.pleft').css('height',rh);
}

You can try this here http://jsfiddle.net/SriharshaCR/7q585k1x/9/embedded/result/

The Declarative model for Jenkins Pipelines has a restricted subset of syntax that it allows in the stage blocks - see the syntax guide for more info. You can bypass that restriction by wrapping your steps in a script { ... } block, but as a result, you'll lose validation of syntax, parameters, etc within the script block.

For Back Button in jquery // http://code.jquery.com/jquery-latest.js

 jQuery(window).bind("unload", function() { //

and in html5 there is an event The event is called 'popstate'

window.onpopstate = function(event) {
alert("location: " + document.location + ", state: " + JSON.stringify(event.state));
};

and for refresh please check Check if page gets reloaded or refreshed in Javascript

In Mozilla Client-x and client-y is inside document area https://developer.mozilla.org/en-US/docs/Web/API/event.clientX

select * from table where column_date > now()- INTERVAL '6 hours';

this work for me and do not need change any config file

vim --cmd "set encoding=utf8" --cmd "set fileencoding=utf8" fileToOpen

Following Markus's answer, in newer versions of JS (ES6 I think) you can create a 'struct' factory more simply using Arrow Functions and Rest Parameter like so:

const Struct = (...keys) => ((...v) => keys.reduce((o, k, i) => {o[k] = v[i]; return o} , {}))
const Item = Struct('id', 'speaker', 'country')
var myItems = [
    Item(1, 'john', 'au'),
    Item(2, 'mary', 'us')
];

console.log(myItems);
console.log(myItems[0].id);
console.log(myItems[0].speaker);
console.log(myItems[0].country);

The result of running this is:

[ { id: 1, speaker: 'john', country: 'au' },
  { id: 2, speaker: 'mary', country: 'us' } ]
1
john
au

You can make it look similar to Python's namedtuple:

const NamedStruct = (name, ...keys) => ((...v) => keys.reduce((o, k, i) => {o[k] = v[i]; return o} , {_name: name}))
const Item = NamedStruct('Item', 'id', 'speaker', 'country')
var myItems = [
    Item(1, 'john', 'au'),
    Item(2, 'mary', 'us')
];

console.log(myItems);
console.log(myItems[0].id);
console.log(myItems[0].speaker);
console.log(myItems[0].country);

And the results:

[ { _name: 'Item', id: 1, speaker: 'john', country: 'au' },
  { _name: 'Item', id: 2, speaker: 'mary', country: 'us' } ]
1
john
au

You can use ipdb inside jupyter with:

from IPython.core.debugger import Tracer; Tracer()()

Edit: the functions above are deprecated since IPython 5.1. This is the new approach:

from IPython.core.debugger import set_trace

Add set_trace() where you need a breakpoint. Type help for ipdb commands when the input field appears.

The body-parser module only handles JSON and urlencoded form submissions, not multipart (which would be the case if you're uploading files).

For multipart, you'd need to use something like connect-busboy or multer or connect-multiparty (multiparty/formidable is what was originally used in the express bodyParser middleware). Also FWIW, I'm working on an even higher level layer on top of busboy called reformed. It comes with an Express middleware and can also be used separately.

[EDIT]
This answer has been edited. I'm leaving the original answer below for context (otherwise the comments wouldn't make sense).

When this question was originally asked, JSLint was the main linting tool for JavaScript. JSHint was a new fork of JSLint, but had not yet diverged much from the original.

Since then, JSLint has remained pretty much static, while JSHint has changed a great deal - it has thrown away many of JSLint's more antagonistic rules, has added a whole load of new rules, and has generally become more flexible. Also, another tool ESLint is now available, which is even more flexible and has more rule options.

In my original answer, I said that you should not force yourself to stick to JSLint's rules; as long as you understood why it was throwing a warning, you could make a judgement for yourself about whether to change the code to resolve the warning or not.

With the ultra-strict ruleset of JSLint from 2011, this was reasonable advice -- I've seen very few JavaScript codesets that could pass a JSLint test. However with the more pragmatic rules available in today's JSHint and ESLint tools, it is a much more realistic proposition to try to get your code passing through them with zero warnings.

There may still occasionally be cases where a linter will complain about something that you've done intentionally -- for example, you know that you should always use === but just this one time you have a good reason to use ==. But even then, with ESLint you have the option to specify eslint-disable around the line in question so you can still have a passing lint test with zero warnings, with the rest of your code obeying the rule. (just don't do that kind of thing too often!)

[ORIGINAL ANSWER FOLLOWS]

By all means use JSLint. But don't get hung up on the results and on fixing everything that it warns about. It will help you improve your code, and it will help you find potential bugs, but not everything that JSLint complains about turns out to be a real problem, so don't feel like you have to complete the process with zero warnings.

Some JSLint warnings are more valuable than others: learn which ones to watch out for, and which ones are less important. Every warning should be considered, but don't feel obliged to fix your code to clear any given warning; it's perfectly okay to look at the code and decide you're happy with it; there are times when things that JSlint doesn't like are actually the right thing to do.

http://msdn.microsoft.com/en-us/library/system.net.sockets.socket.remoteendpoint.aspx

You can then call the IPEndPoint..::.Address method to retrieve the remote IPAddress, and the IPEndPoint..::.Port method to retrieve the remote port number.

More from the link (fixed up alot heh):

Socket s;

IPEndPoint remoteIpEndPoint = s.RemoteEndPoint as IPEndPoint;
IPEndPoint localIpEndPoint = s.LocalEndPoint as IPEndPoint;

if (remoteIpEndPoint != null)
{
    // Using the RemoteEndPoint property.
    Console.WriteLine("I am connected to " + remoteIpEndPoint.Address + "on port number " + remoteIpEndPoint.Port);
}

if (localIpEndPoint != null)
{
    // Using the LocalEndPoint property.
    Console.WriteLine("My local IpAddress is :" + localIpEndPoint.Address + "I am connected on port number " + localIpEndPoint.Port);
}

I had this issue after VS mac updation. iOS sdk was updated. I was referring the ios dll in project folder. The version number in the hintpath was changed.

Earlier:

<Reference Include="Xamarin.iOS">   
     <HintPath>..\..\..\..\..\..\..\..\Library\Frameworks\Xamarin.iOS.framework\Versions\13.18.2.1\lib\mono\Xamarin.iOS\Xamarin.iOS.dll</HintPath>
    </Reference>
    <Reference Include="Xamarin.iOS">
      <HintPath>..\..\..\..\..\..\..\Library\Frameworks\Xamarin.iOS.framework\Versions\13.18.1.31\lib\mono\Xamarin.iOS\Xamarin.iOS.dll</HintPath>
    </Reference>
    <Reference Include="Xamarin.iOS">          <HintPath>..\..\..\..\..\..\..\Library\Frameworks\Xamarin.iOS.framework\Versions\13.18.3.2\lib\mono\Xamarin.iOS\Xamarin.iOS.dll</HintPath>
    </Reference>

I referred to the numbers in the previous commit and changed only the numbers in project folder, did nothing in android,ios folders. Worked for me!!!

Now:

<Reference Include="Xamarin.iOS">                                                            
 <HintPath>..\..\..\..\..\..\..\..\Library\Frameworks\Xamarin.iOS.framework\Versions\13.20.2.2\lib\mono\Xamarin.iOS\Xamarin.iOS.dll</HintPath>
        </Reference> 

CERAS is a class name which cannot be assigned. As the class implements IDisposable a typical usage would be:

using (CERas.CERAS ceras = new CERas.CERAS())
{
    // call some method on ceras
}

Writing the properties file with multiple comments is not supported. Why ?

PropertyFile.java

public class PropertyFile extends Task {

    /* ========================================================================
     *
     * Instance variables.
     */

    // Use this to prepend a message to the properties file
    private String              comment;

    private Properties          properties;

The ant property file task is backed by a java.util.Properties class which stores comments using the store() method. Only one comment is taken from the task and that is passed on to the Properties class to save into the file.

The way to get around this is to write your own task that is backed by commons properties instead of java.util.Properties. The commons properties file is backed by a property layout which allows settings comments for individual keys in the properties file. Save the properties file with the save() method and modify the new task to accept multiple comments through <comment> elements.

If the value is a String, then this might work: map.entrySet().stream().collect(Collectors.toMap(e -> e.getKey(), e -> Optional.ofNullable(e.getValue()).orElse("")))

You can use .text-reset class to reset the color from default blue to anything you want. Hopefully this is helpful.

Source: https://getbootstrap.com/docs/4.5/utilities/text/#reset-color

Another solution is to use the query method:

import pandas as pd

from random import randint
df = pd.DataFrame({'A': [randint(1, 9) for x in xrange(10)],
                   'B': [randint(1, 9) * 10 for x in xrange(10)],
                   'C': [randint(1, 9) * 100 for x in xrange(10)]})
print df

   A   B    C
0  7  20  300
1  7  80  700
2  4  90  100
3  4  30  900
4  7  80  200
5  7  60  800
6  3  80  900
7  9  40  100
8  6  40  100
9  3  10  600

print df.query('B > 50 and C != 900')

   A   B    C
1  7  80  700
2  4  90  100
4  7  80  200
5  7  60  800

Now if you want to change the returned values in column A you can save their index:

my_query_index = df.query('B > 50 & C != 900').index

....and use .iloc to change them i.e:

df.iloc[my_query_index, 0] = 5000

print df

      A   B    C
0     7  20  300
1  5000  80  700
2  5000  90  100
3     4  30  900
4  5000  80  200
5  5000  60  800
6     3  80  900
7     9  40  100
8     6  40  100
9     3  10  600

I was able to update it with markForCheck()

Import ChangeDetectorRef

import { ChangeDetectorRef } from '@angular/core';

Inject and instantiate it

constructor(private ref: ChangeDetectorRef) { 
}

Finally mark change detection to take place

this.ref.markForCheck();

Here's an example where markForCheck() works and detectChanges() don't.

https://plnkr.co/edit/RfJwHqEVJcMU9ku9XNE7?p=preview

EDIT: This example doesn't portray the problem anymore :( I believe it might be running a newer Angular version where it's fixed.

(Press STOP/RUN to run it again)

Parameters are key-value pairs that can appear inside URL path, and start with a semicolon character (;).

Query string appears after the path (if any) and starts with a question mark character (?).

Both parameters and query string contain key-value pairs.

In a GET request, parameters appear in the URL itself:

<scheme>://<username>:<password>@<host>:<port>/<path>;<parameters>?<query>#<fragment>

In a POST request, parameters can appear in the URL itself, but also in the datastream (as known as content).

Query string is always a part of the URL.

Parameters can be buried in form-data datastream when using POST method so they may not appear in the URL. Yes a POST request can define parameters as form data and in the URL, and this is not inconsistent because parameters can have several values.

I've found no explaination for this behavior so far. I guess it might be useful sometimes to "unhide" parameters from a POST request, or even let the code handling a GET request share some parts with the code handling a POST. Of course this can work only with server code supporting parameters in a URL.

Until you get better insights, I suggest you to use parameters only in form-data datastream of POST requests.

Sources:

What Every Developer Should Know About URLs

RFC 3986

Use ActivityManager

If you only want to know the application containing the current activity, you can do so using ActivityManager. The technique you can use depends on the version of Android:

• Pre-Lollipop: ActivityManager.getRunningTasks (example)
• Lollipop: ActivityManager.getRunningAppProcesses (example)

Benefits

• Should work in all Android versions to-date.

Disadvantages

• Doesn't work in Android 5.1+ (it only returns your own app)
• The documentation for these APIs says they're only intended for debugging and management user interfaces.
• If you want real-time updates, you need to use polling.
• Relies on a hidden API: ActivityManager.RunningAppProcessInfo.processState
• This implementation doesn't pick up the app switcher activity.

Example (based on KNaito's code)

public class CurrentApplicationPackageRetriever {

    private final Context context;

    public CurrentApplicationPackageRetriever(Context context) {
        this.context = context;
    }

    public String get() {
        if (Build.VERSION.SDK_INT < 21)
            return getPreLollipop();
        else
            return getLollipop();
    }

    private String getPreLollipop() {
        @SuppressWarnings("deprecation")
        List<ActivityManager.RunningTaskInfo> tasks =
            activityManager().getRunningTasks(1);
        ActivityManager.RunningTaskInfo currentTask = tasks.get(0);
        ComponentName currentActivity = currentTask.topActivity;
        return currentActivity.getPackageName();
    }

    private String getLollipop() {
        final int PROCESS_STATE_TOP = 2;

        try {
            Field processStateField = ActivityManager.RunningAppProcessInfo.class.getDeclaredField("processState");

            List<ActivityManager.RunningAppProcessInfo> processes =
                activityManager().getRunningAppProcesses();
            for (ActivityManager.RunningAppProcessInfo process : processes) {
                if (
                    // Filters out most non-activity processes
                    process.importance <= ActivityManager.RunningAppProcessInfo.IMPORTANCE_FOREGROUND
                    &&
                    // Filters out processes that are just being
                    // _used_ by the process with the activity
                    process.importanceReasonCode == 0
                ) {
                    int state = processStateField.getInt(process);

                    if (state == PROCESS_STATE_TOP) {
                        String[] processNameParts = process.processName.split(":");
                        String packageName = processNameParts[0];

                        /*
                         If multiple candidate processes can get here,
                         it's most likely that apps are being switched.
                         The first one provided by the OS seems to be
                         the one being switched to, so we stop here.
                         */
                        return packageName;
                    }
                }
            }
        } catch (NoSuchFieldException | IllegalAccessException e) {
            throw new RuntimeException(e);
        }

        return null;
    }

    private ActivityManager activityManager() {
        return (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
    }

}

Manifest

Add the GET_TASKS permission to AndroidManifest.xml:

<!--suppress DeprecatedClassUsageInspection -->
<uses-permission android:name="android.permission.GET_TASKS" />

If you need an iterator that just returns the keys you need to wrap map's iterator in your own class that provides the desired interface. You can declare a new iterator class from scratch like here, of use existing helper constructs. This answer shows how to use Boost's transform_iterator to wrap the iterator in one that only returns the values/keys.

ID's have the functionality to work as links to particular sections within a webpage. a keyword after # tag will take you to a particular section of the webpage. e.g "http://exampleurl.com#chapter5" in the address bar will take you there when you have a "section5" id wrapped around the chapter 5 section of the page.

It took me a while to find out what is going on, but here is the summary. I hope this save people a lot of time.

Apple are not playing nice with Wi-Fi Direct, not in the same way that Android is. The Multipeer Connectivity Framework that Apple provides combines both BLE and WiFi Direct together and will only work with Apple devices and not any device that is using Wi-Fi Direct.

https://developer.apple.com/library/ios/documentation/MultipeerConnectivity/Reference/MultipeerConnectivityFramework/index.html

It states the following in this documentation - "The Multipeer Connectivity framework provides support for discovering services provided by nearby iOS devices using infrastructure Wi-Fi networks, peer-to-peer Wi-Fi, and Bluetooth personal area networks and subsequently communicating with those services by sending message-based data, streaming data, and resources (such as files)."

Additionally, Wi-Fi direct in this mode between i-Devices will need iPhone 5 and above.

There are apps that use a form of Wi-Fi Direct on the App Store, but these are using their own libraries.

Use getChildCount() and getChildAt(int index).

Example:

LinearLayout ll = …
final int childCount = ll.getChildCount();
for (int i = 0; i < childCount; i++) {
      View v = ll.getChildAt(i);
      // Do something with v.
      // …
}

Google Page-Speed: Don't include a query string in the URL for static resources. Most proxies, most notably Squid up through version 3.0, do not cache resources with a "?" in their URL even if a Cache-control: public header is present in the response. To enable proxy caching for these resources, remove query strings from references to static resources, and instead encode the parameters into the file names themselves.

In this case, you can include the version into URL ex: http://abc.com/v1.2/script.js and use apache mod_rewrite to redirect the link to http://abc.com/script.js. When you change the version, client browser will update the new file.

I've been trying to activate 'active' class manually with javascript. It's not as usable as a complete library, but for easy cases seems to be enough:

var button = $('#myToggleButton');
button.on('click', function () {
  $(this).toggleClass('active');
});

If you think carefully, 'active' class is used by bootstrap when the button is being pressed, not before or after that (our case), so there's no conflict in reuse the same class.

Try this example and tell me if it fails: http://jsbin.com/oYoSALI/1/edit?html,js,output

#include <string>
#include <sstream>

namespace patch
{
    template < typename T > std::string to_string( const T& n )
    {
        std::ostringstream stm ;
        stm << n ;
        return stm.str() ;
    }
}

#include <iostream>

int main()
{
    std::cout << patch::to_string(1234) << '\n' << patch::to_string(1234.56) << '\n' ;
}

do not forget to include #include <sstream>

Concatenate with & operator

Dim str as String  'no need to create a string instance
str = "Hello " & "World"

You can concate with the + operator as well but you can get yourself into trouble when trying to concatenate numbers.

Concatenate with String.Concat()

str = String.Concat("Hello ", "World")

Useful when concatenating array of strings

StringBuilder.Append()

When concatenating large amounts of strings use StringBuilder, it will result in much better performance.

    Dim sb as new System.Text.StringBuilder()
    str = sb.Append("Hello").Append(" ").Append("World").ToString()

Strings in .NET are immutable, resulting in a new String object being instantiated for every concatenation as well a garbage collection thereof.

just use class='text-center' in element for center heading.

<h2 class="text-center">sample center heading</h2>

use class='text-left' in element for left heading, and use class='text-right' in element for right heading.

Of course @Stephan202 has given a really nice answer. I am providing an alternative.

def compressx(min_index = 3, max_index = 6, x = ['a', 'b', 'c', 'd', 'e', 'f', 'g']):
    x = x[:min_index] + [''.join(x[min_index:max_index])] + x[max_index:]
    return x
compressx()

>>>['a', 'b', 'c', 'def', 'g']

You can also do the following.

x = x[:min_index] + [''.join(x[min_index:max_index])] + x[max_index:]
print(x)

>>>['a', 'b', 'c', 'def', 'g']

This is for other people landing here. First of all you need a servlet. I used a @POST request. Now in your jsp file you have two ways to do this:

1. The complicated way with AJAX, in case you are new to jsp: You need to do a post with the javascript var that you want to use in you java class and use JSP to call your java function from inside your request:

   $(document).ready(function() {
       var sendVar = "hello";
       $('#domId').click(function (e)
       {                               
           $.ajax({
               type: "post",
               url: "/", //or whatever your url is
               data: "var=" + sendVar ,
               success: function(){      
                       console.log("success: " + sendVar );                            
                     <% 
                         String received= request.getParameter("var");
   
                         if(received == null || received.isEmpty()){
                             received = "some default value";
                         }
                         MyJavaClass.processJSvar(received); 
                     %>;                            
   
               }
           });
       });
   
   });
   

2. The easy way just with JSP:

   <form id="myform" method="post" action="http://localhost:port/index.jsp">
        <input type="hidden" name="inputName" value=""/>
                  <% 
                         String pg = request.getParameter("inputName");
   
                         if(pg == null || pg.isEmpty()){
                             pg = "some default value";
                         }
                         DatasyncMain.changeToPage(pg); 
                     %>;     
   </form>
   

Of course in this case you still have to load the input value from JS (so far I haven't figured out another way to load it).

For lamdas where your long value is somewhere in an object I recommend using:

.sorted((o1, o2) -> Long.compare(o1.getLong(), o2.getLong()))

or even better:

.sorted(Comparator.comparingLong(MyObject::getLong))

Since this is the top Google answer for this, and it was way easier than I expected, here is the simple answer. Just subtract date1 from date2.

If this is your spreadsheet dates

     A            B
1 10/11/2017  12/1/2017

=(B1)-(A1)

results in 51, which is the number of days between a past date and a current date in Google spreadsheet

As long as it is a date format Google Sheets recognizes, you can directly subtract them and it will be correct.

To do it for a current date, just use the =TODAY() function.

=TODAY()-A1

While today works great, you can't use a date directly in the formula, you should referencing a cell that contains a date.

=(12/1/2017)-(10/1/2017) results in 0.0009915716411, not 61.

A stack pointer is a small register that stores the address of the top of stack. It is used for the purpose of pointing address of the top of the stack.

For what it's worth, this came up on the python-ideas mailing list recently. It turns out that there is an itertools recipe for doing this already:¹

def all_equal(iterable):
    "Returns True if all the elements are equal to each other"
    g = groupby(iterable)
    return next(g, True) and not next(g, False)

Supposedly it performs very nicely and has a few nice properties.

1. Short-circuits: It will stop consuming items from the iterable as soon as it finds the first non-equal item.
2. Doesn't require items to be hashable.
3. It is lazy and only requires O(1) additional memory to do the check.

^{1In other words, I can't take the credit for coming up with the solution -- nor can I take credit for even finding it.}

You can execute it just as you select a table using SELECT clause. In addition you can provide parameters within parentheses.

Try with below syntax:

SELECT * FROM yourFunctionName(parameter1, parameter2)

Have a look at Ninja Web Framework.

It is a pure Java MVC framework in the tradition of Rails. It does not use any xml based configuration and has all you need to get started right away: Session management, Security management, html rendering, json rendering and parsing, xml rendering and parsing. It also features a built-in testing environment and is 100% compatible with traditional servlet containers.

It uses Maven, though - but Maven used correctly makes software development super simple. It also allows you to use any Ide right away :)

By the way - developing Ninja is really productive - make changes to your code and see the results immediately.

Check out: http://www.ninjaframework.org.

put the folder which has the properties file for log in java build path source. You can add it by right clicking the project ----> build path -----> configure build path ------> add t

You can add ng-change directive to input fields. Have a look at the docs example.

While macros and/or functions (as already suggested) will work (and might have other positive effects (i.e. debug hooks)), they are more complex than needed. The simplest and possibly most elegant solution is to just define a constant that you use for variable initialisation:

const struct foo FOO_DONT_CARE = { // or maybe FOO_DEFAULT or something
    dont_care, dont_care, dont_care, dont_care
};
...
struct foo bar = FOO_DONT_CARE;
bar.id = 42;
bar.current_route = new_route;
update(&bar);

This code has virtually no mental overhead of understanding the indirection, and it is very clear which fields in bar you set explicitly while (safely) ignoring those you do not set.

In case we want to dump the in memory file to disk. This code can be used

  if isinstanceof(obj,SpooledTemporaryFile):
    obj.rollover()

The accepted answer didn't work for me on Azure SQL, here's one that did, it's super fast and did exactly what I wanted:

select t.name, s.row_count
from sys.tables t
join sys.dm_db_partition_stats s
  ON t.object_id = s.object_id
    and t.type_desc = 'USER_TABLE'
    and t.name not like '%dss%'
    and s.index_id = 1
order by s.row_count desc

# This keeps all separators  in result 
##########################################################################
import re
st="%%(c+dd+e+f-1523)%%7"
sh=re.compile('[\+\-//\*\<\>\%\(\)]')

def splitStringFull(sh, st):
   ls=sh.split(st)
   lo=[]
   start=0
   for l in ls:
     if not l : continue
     k=st.find(l)
     llen=len(l)
     if k> start:
       tmp= st[start:k]
       lo.append(tmp)
       lo.append(l)
       start = k + llen
     else:
       lo.append(l)
       start =llen
   return lo
  #############################

li= splitStringFull(sh , st)
['%%(', 'c', '+', 'dd', '+', 'e', '+', 'f', '-', '1523', ')%%', '7']

To get both stdout and stderr, I use:

Function GetProgramOutput([string]$exe, [string]$arguments)
{
    $process = New-Object -TypeName System.Diagnostics.Process
    $process.StartInfo.FileName = $exe
    $process.StartInfo.Arguments = $arguments

    $process.StartInfo.UseShellExecute = $false
    $process.StartInfo.RedirectStandardOutput = $true
    $process.StartInfo.RedirectStandardError = $true
    $process.Start()

    $output = $process.StandardOutput.ReadToEnd()   
    $err = $process.StandardError.ReadToEnd()

    $process.WaitForExit()

    $output
    $err
}

$exe = "cmd"
$arguments = '/c echo hello 1>&2'   #this writes 'hello' to stderr

$runResult = (GetProgramOutput $exe $arguments)
$stdout = $runResult[-2]
$stderr = $runResult[-1]

[System.Console]::WriteLine("Standard out: " + $stdout)
[System.Console]::WriteLine("Standard error: " + $stderr)

As mentioned in one of the other answers, you can use putc(int c, FILE *stream), putchar(int c) or fputc(int c, FILE *stream) for this purpose.

What's important to note is that using any of the above functions is from some to signicantly faster than using any of the format-parsing functions like printf.

Using printf is like using a machine gun to fire one bullet.

Javascript now has a specific built in object called Map, you can call as follows :

   var myMap = new Map()

You can update it with .set :

   myMap.set("key0","value")

This has the advantage of methods you can use to handle look ups, like the boolean .has

  myMap.has("key1"); // evaluates to false 

You can use this before calling .get on your Map object to handle looking up non-existent keys

** Update ** A scalars converter has been added to retrofit that allows for a String response with less ceremony than my original answer below.

Example interface --

public interface GitHubService {
    @GET("/users/{user}")
    Call<String> listRepos(@Path("user") String user);
}

Add the ScalarsConverterFactory to your retrofit builder. Note: If using ScalarsConverterFactory and another factory, add the scalars factory first.

Retrofit retrofit = new Retrofit.Builder()
    .baseUrl(BASE_URL)
    .addConverterFactory(ScalarsConverterFactory.create())
    // add other factories here, if needed.
    .build();

You will also need to include the scalars converter in your gradle file --

implementation 'com.squareup.retrofit2:converter-scalars:2.1.0'

--- Original Answer (still works, just more code) ---

I agree with @CommonsWare that it seems a bit odd that you want to intercept the request to process the JSON yourself. Most of the time the POJO has all the data you need, so no need to mess around in JSONObject land. I suspect your specific problem might be better solved using a custom gson TypeAdapter or a retrofit Converter if you need to manipulate the JSON. However, retrofit provides more the just JSON parsing via Gson. It also manages a lot of the other tedious tasks involved in REST requests. Just because you don't want to use one of the features, doesn't mean you have to throw the whole thing out. There are times you just want to get the raw stream, so here is how to do it -

First, if you are using Retrofit 2, you should start using the Call API. Instead of sending an object to convert as the type parameter, use ResponseBody from okhttp --

public interface GitHubService {
    @GET("/users/{user}")
    Call<ResponseBody> listRepos(@Path("user") String user);
}

then you can create and execute your call --

GitHubService service = retrofit.create(GitHubService.class);
Call<ResponseBody> result = service.listRepos(username);
result.enqueue(new Callback<ResponseBody>() {
    @Override
    public void onResponse(Response<ResponseBody> response) {
        try {
            System.out.println(response.body().string());
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    @Override
    public void onFailure(Throwable t) {
        e.printStackTrace();
    }
});

Note The code above calls string() on the response object, which reads the entire response into a String. If you are passing the body off to something that can ingest streams, you can call charStream() instead. See the ResponseBody docs.

Quick answer

On src, you can always specify files to ignore using "!".

Example (you want to exclude all *.min.js files on your js folder and subfolder:

gulp.src(['js/**/*.js', '!js/**/*.min.js'])

You can do it as well for individual files.

Expanded answer:

Extracted from gulp documentation:

gulp.src(globs[, options])

Emits files matching provided glob or an array of globs. Returns a stream of Vinyl files that can be piped to plugins.

glob refers to node-glob syntax or it can be a direct file path.

So, looking to node-glob documentation we can see that it uses the minimatch library to do its matching.

On minimatch documentation, they point out the following:

if the pattern starts with a ! character, then it is negated.

And that is why using ! symbol will exclude files / directories from a gulp task

Look at the yesno helper

Eg:

{{ myValue|yesno:"itwasTrue,itWasFalse,itWasNone" }}

As the others stated : it's by compiling. You can use the javac command, but I'f you're new at java, I suggest you use a software for compiling your code (and IDE) such as Eclipse and it will do the job for you.

Use Where-Object, like:

Get-ChildItem 'PATH' -recurse -include @("*.tif*","*.jp2","*.pdf") | 
Where-Object { $_.CreationTime -gt "03/01/2013" -and $_.CreationTime -lt "03/31/2013" }
Select-Object FullName, CreationTime, @{Name="Mbytes";Expression={$_.Length/1Kb}}, @{Name="Age";Expression={(((Get-Date) - $_.CreationTime).Days)}} | 
Export-Csv 'PATH\scans.csv'

No need to create custom walker. Just use additional argument and set filter for nav_menu_css_class.

For example:

$args = array(
    'container'     => '',
    'theme_location'=> 'your-theme-loc',
    'depth'         => 1,
    'fallback_cb'   => false,
    'add_li_class'  => 'your-class-name1 your-class-name-2'
    );
wp_nav_menu($args);

Notice the new 'add_li_class' argument.

And set the filter on functions.php

function add_additional_class_on_li($classes, $item, $args) {
    if(isset($args->add_li_class)) {
        $classes[] = $args->add_li_class;
    }
    return $classes;
}
add_filter('nav_menu_css_class', 'add_additional_class_on_li', 1, 3);

Pandas merge offers a naive, fast solution to the problem:

# given the lists
x, y, z = [1, 2, 3], [4, 5], [6, 7]

# get dfs with same, constant index 
x = pd.DataFrame({'x': x}, index=np.repeat(0, len(x))
y = pd.DataFrame({'y': y}, index=np.repeat(0, len(y))
z = pd.DataFrame({'z': z}, index=np.repeat(0, len(z))

# get all permutations stored in a new df
df = pd.merge(x, pd.merge(y, z, left_index=True, righ_index=True),
              left_index=True, right_index=True)

consider changing host entry 127.0.0.1 to localhost or even the IP address of the server.

$cfg['Servers'][$i]['host']

localStorage.clear()

That'll clear the stored data. Then refresh and things should start to work.

TRY THIS

SELECT E.ename,E.empno,ISNULL(E.ename,'NO MANAGER') AS MANAGER FROM emp e
INNER JOIN emp M
ON  M.empno=E.empno

Instaed of subquery use self join

If you are using curl versions curl-7.19.7-46.el6.x86_64 or older. Please provide an option as -k1 (small K1).

The Math.round method returns a long (or an int if you pass in a float), and Java's integer division is the culprit. Cast it back to a double, or use a double literal when dividing by 10. Either:

double total = (double) Math.round((num / sum * 100) * 10) / 10;

or

double total = Math.round((num / sum * 100) * 10) / 10.0;

Then you should get

27.3

You can get the path of sdcard from this code:

File extStore = Environment.getExternalStorageDirectory();

Then specify the foldername and file name

for e.g:

"/LazyList/"+serialno.get(position).trim()+".jpg"

You could define a mapping of air pressure to servo angle, for example:

def calc_angle(pressure, min_p=1000, max_p=1200):     return 360 * ((pressure - min_p) / float(max_p - min_p))  angle = calc_angle(pressure) 

This will linearly convert pressure values between min_p and max_p to angles between 0 and 360 (you could include min_a and max_a to constrain the angle, too).

To pick a data structure, I wouldn't use a list but you could look up values in a dictionary:

d = {1000:0, 1001: 1.8, ...}  angle = d[pressure] 

but this would be rather time-consuming to type out!

myImgView.setImageResource(R.drawable.monkey);

is used for setting image in the current image view, but if want to delete this image then you can use this code like:

((ImageView) v.findViewById(R.id.ImageView1)).setImageResource(0);

now this will delete the image from your image view, because it has set the resources value to zero.

You need to set the text after the replace call:

$('.element span').each(function() {_x000D_
  console.log($(this).text());_x000D_
  var text = $(this).text().replace('N/A, ', '');_x000D_
  $(this).text(text);_x000D_
});

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>_x000D_
<div class="element">_x000D_
  <span>N/A, Category</span>_x000D_
</div>

Here's another cool way you can do it (hat tip @Felix King):

$(".element span").text(function(index, text) {
    return text.replace("N/A, ", "");
});

webRequest.ContentType = "application/x-www-form-urlencoded";

1. Where does application/x-www-form-urlencoded's name come from?

   If you send HTTP GET request, you can use query parameters as follows:

   http://example.com/path/to/page?name=ferret&color=purple

   The content of the fields is encoded as a query string. The application/x-www-form- urlencoded's name come from the previous url query parameter but the query parameters is in where the body of request instead of url.

   The whole form data is sent as a long query string.The query string contains name- value pairs separated by & character

   e.g. field1=value1&field2=value2

2. It can be simple request called simple - don't trigger a preflight check

   Simple request must have some properties. You can look here for more info. One of them is that there are only three values allowed for Content-Type header for simple requests

   • application/x-www-form-urlencoded
   • multipart/form-data
   • text/plain

3.For mostly flat param trees, application/x-www-form-urlencoded is tried and tested.

request.ContentType = "application/json; charset=utf-8";

1. The data will be json format.

axios and superagent, two of the more popular npm HTTP libraries, work with JSON bodies by default.

{
  "id": 1,
  "name": "Foo",
  "price": 123,
  "tags": [
    "Bar",
    "Eek"
  ],
  "stock": {
    "warehouse": 300,
    "retail": 20
  }
}

2. "application/json" Content-Type is one of the Preflighted requests.

Now, if the request isn't simple request, the browser automatically sends a HTTP request before the original one by OPTIONS method to check whether it is safe to send the original request. If itis ok, Then send actual request. You can look here for more info.

3. application/json is beginner-friendly. URL encoded arrays can be a nightmare!

You can do that very simple by this function:

def page_is_loading(driver):
    while True:
        x = driver.execute_script("return document.readyState")
        if x == "complete":
            return True
        else:
            yield False

and when you want do something after page loading complete,you can use:

Driver = webdriver.Firefox(options=Options, executable_path='geckodriver.exe')
Driver.get("https://www.google.com/")

while not page_is_loading(Driver):
    continue

Driver.execute_script("alert('page is loaded')")

checkout the example here

http://svn.apache.org/repos/asf/poi/trunk/src/examples/src/org/apache/poi/ss/examples/BusinessPlan.java

style.setFillForegroundColor(IndexedColors.LIGHT_CORNFLOWER_BLUE.getIndex());

I believe you could addClass to the element. But either way you'd have to use Jquery or reg JS

div {
  opacity:0;
  transition:opacity 1s linear;*
}
div.SomeClass {
  opacity:1;
}

One of the Related posts gave me the (simple) answer.

Apparently the auto value on the grid-template-rows property does exactly what I was looking for.

.grid {
    display:grid;
    grid-template-columns: 1fr 1.5fr 1fr;
    grid-template-rows: auto auto 1fr 1fr 1fr auto auto;
    grid-gap:10px;
    height: calc(100vh - 10px);
}

I think what you're looking for is !!val==false which can be turned to !val (even shorter):

You see:

function checkValue(value) {
    console.log(!!value);
}

checkValue(); // false
checkValue(null); // false
checkValue(undefined); // false
checkValue(false); // false
checkValue(""); // false

checkValue(true); // true
checkValue({}); // true
checkValue("any string"); // true

That works by flipping the value by using the ! operator.

If you flip null once for example like so :

console.log(!null) // that would output --> true

If you flip it twice like so :

console.log(!!null) // that would output --> false

Same with undefined or false.

Your code:

if(val==null || val===false){
  ;
}

would then become:

if(!val) {
  ;
}

That would work for all cases even when there's a string but it's length is zero. Now if you want it to also work for the number 0 (which would become false if it was double flipped) then your if would become:

if(!val && val !== 0) {
  // code runs only when val == null, undefined, false, or empty string ""
}

Check that you have enough rights to workspace directory. I got this error when I didn't have write permission to workspace.

[self.view.layer setBorderColor: [UIColor colorWithRed:0.265 green:0.447 blue:0.767 alpha:1.0f].CGColor];

This error tells you everything:

undefined reference toHash::insert(int, char)

You're not linking with the implementations of functions defined in Hash.h. Don't you have a Hash.cpp to also compile and link?

From digging into the iOS 8 docs that are available as of Sept 9th 3:30pm there is no mention of developer access to the NFC controller to perform any NFC operations; that includes reading tags, writing tags, pairing, payments, tag emulation... Given its an NXP controller the hardware has the capability to perform these features. They did mention a 3rd party app for the watch that allowed a hotel guest to open their room door with NFC. This is a classic use case for NFC and gives some indication that the NFC controller will be open to developers at some point. Remember, the watch is not supposed to be released until Q1 2015. So for now I'd say it's closed but will be open soon. Given the 'newness' of contactless payments for the general US consumer and the recent security breaches its not surprising Apple wants to keep this closed for a while.

Disclosure: Im the CEO of GoToTags, an NFC company with obvious vested interest in Apple opening up NFC to developers.

--- Correction & Update ---

The hotel app actually uses Bluetooth, not NFC. NFC is still often used for door unlocking, just not in this one example. NFC could be used if the watch has an open NFC controller.

I do know that Apple is aware of all of this and is discussing this with their top developers and stakeholders. There has already been massive negative push back on the lack of support for reading tags. As often the case in the past, I expect Apple to eventually open this up to developers for non-payment related functionality (reading tags, pairing). I do not think Apple will ever allow other wallets though. File sharing will likely be left to AirDrop as well.

--- Update on March 23rd 2016 ---

I am continually asked for updates about this topic, often with people referencing this post. With Apple releasing the iPhone SE, many are again asking why Apple has not supported tag reading yet. In summary Apple is more focused on Apple Pay succeeding than the other use cases for NFC for now. Apple could make a lot of money from Apple Pay, and has less to make from the other uses for NFC. Apple will likely open up NFC tag reading when they feel that consumer trust and security with NFC and Apple Pay is such that it wont put Apple Pay at risk. Further information here.

--- Update on May 24th 2017 ---

A developer in Greece has hacked the iPhone 6s to get it to read NFC tags via the NFC private frameworks; more info & video. While this isn't a long term solution, it provides some guidance on some outstanding question: Is there enough power in the iPhone's NFC controller to power an NFC tag? Looks like the answer is yes. From initial testing the range is a few cm, which isn't too bad. It might also be the power is tunable; this is being investigated at this time. The implications of this are significant. If the older model phones do have enough RF power for tag reading/writing, then when Apple does open up the SDK it means there will be 100Ms of iPhones that can read NFC tags, vs the case where only the new iPhones could.

var theName;

theName = $("input selector goes here").attr("name");

Killing Eclipse and then rebooting did not help me. I added the Android tool to the PATH variables, started Task Manager and killed adb.exe.

I restarted Eclipse, and then it worked.

(Jun-Dec 2016) Most answers here are now out-of-date as: 1) GData APIs are the previous generation of Google APIs, and that's why it was hard for @Josh Brown to find that old GData Docs API documentation. While not all GData APIs have been deprecated, all newer Google APIs do not use the Google Data protocol; and 2) Google released a new Google Sheets API (not GData). In order to use the new API, you need to get the Google APIs Client Library for Python (it's as easy as pip install -U google-api-python-client [or pip3 for Python 3]) and use the latest Sheets API v4+, which is much more powerful & flexible than older API releases.

Here's one code sample from the official docs to help get you kickstarted. However, here are slightly longer, more "real-world" examples of using the API you can learn from (videos plus blog posts):

• Migrating SQL data to a Sheet plus code deep dive post
• Formatting text using the Sheets API plus code deep dive post
• Generating slides from spreadsheet data plus code deep dive post
• Those and others in the Sheets API video library

The latest Sheets API provides features not available in older releases, namely giving developers programmatic access to a Sheet as if you were using the user interface (create frozen rows, perform cell formatting, resizing rows/columns, adding pivot tables, creating charts, etc.), but NOT as if it was some database that you could perform searches on and get selected rows from. You'd basically have to build a querying layer on top of the API that does this. One alternative is to use the Google Charts Visualization API query language, which does support SQL-like querying. You can also query from within the Sheet itself. Be aware that this functionality existed before the v4 API, and that the security model was updated in Aug 2016. To learn more, check my G+ reshare to a full write-up from a Google Developer Expert.

Also note that the Sheets API is primarily for programmatically accessing spreadsheet operations & functionality as described above, but to perform file-level access such as imports/exports, copy, move, rename, etc., use the Google Drive API instead. Examples of using the Drive API:

• Listing your files in Google Drive and code deep dive post
• Google Drive: Uploading & Downloading Files plus "Poor man's plain text to PDF converter" code deep dive post (*)
• Exporting a Google Sheet as CSV blog post only

(*) - TL;DR: upload plain text file to Drive, import/convert to Google Docs format, then export that Doc as PDF. Post above uses Drive API v2; this follow-up post describes migrating it to Drive API v3, and here's a developer video combining both "poor man's converter" posts.

To learn more about how to use Google APIs with Python in general, check out my blog as well as a variety of Google developer videos (series 1 and series 2) I'm producing.

ps. As far as Google Docs goes, there isn't a REST API available at this time, so the only way to programmatically access a Doc is by using Google Apps Script (which like Node.js is JavaScript outside of the browser, but instead of running on a Node server, these apps run in Google's cloud; also check out my intro video.) With Apps Script, you can build a Docs app or an add-on for Docs (and other things like Sheets & Forms).

UPDATE Jul 2018: The above "ps." is no longer true. The G Suite developer team pre-announced a new Google Docs REST API at Google Cloud NEXT '18. Developers interested in getting into the early access program for the new API should register at https://developers.google.com/docs.

UPDATE Feb 2019: The Docs API launched to preview last July is now available generally to all... read the launch post for more details.

UPDATE Nov 2019: In an effort to bring G Suite and GCP APIs more inline with each other, earlier this year, all G Suite code samples were partially integrated with GCP's newer (lower-level not product) Python client libraries. The way auth is done is similar but (currently) requires a tiny bit more code to manage token storage, meaning rather than our libraries manage storage.json, you'll store them using pickle (token.pickle or whatever name you prefer) instead, or choose your own form of persistent storage. For you readers here, take a look at the updated Python quickstart example.

UPDATE 24.04.2016.

I've created tutorial on my page https://madebydenis.com/ajax-load-posts-on-wordpress/ about implementing this on Twenty Sixteen theme, so feel free to check it out :)

EDIT

I've tested this on Twenty Fifteen and it's working, so it should be working for you.

In index.php (assuming that you want to show the posts on the main page, but this should work even if you put it in a page template) I put:

    <div id="ajax-posts" class="row">
        <?php
            $postsPerPage = 3;
            $args = array(
                    'post_type' => 'post',
                    'posts_per_page' => $postsPerPage,
                    'cat' => 8
            );

            $loop = new WP_Query($args);

            while ($loop->have_posts()) : $loop->the_post();
        ?>

         <div class="small-12 large-4 columns">
                <h1><?php the_title(); ?></h1>
                <p><?php the_content(); ?></p>
         </div>

         <?php
                endwhile;
        wp_reset_postdata();
         ?>
    </div>
    <div id="more_posts">Load More</div>

This will output 3 posts from category 8 (I had posts in that category, so I used it, you can use whatever you want to). You can even query the category you're in with

$cat_id = get_query_var('cat');

This will give you the category id to use in your query. You could put this in your loader (load more div), and pull with jQuery like

<div id="more_posts" data-category="<?php echo $cat_id; ?>">>Load More</div>

And pull the category with

var cat = $('#more_posts').data('category');

But for now, you can leave this out.

Next in functions.php I added

wp_localize_script( 'twentyfifteen-script', 'ajax_posts', array(
    'ajaxurl' => admin_url( 'admin-ajax.php' ),
    'noposts' => __('No older posts found', 'twentyfifteen'),
));

Right after the existing wp_localize_script. This will load WordPress own admin-ajax.php so that we can use it when we call it in our ajax call.

At the end of the functions.php file I added the function that will load your posts:

function more_post_ajax(){

    $ppp = (isset($_POST["ppp"])) ? $_POST["ppp"] : 3;
    $page = (isset($_POST['pageNumber'])) ? $_POST['pageNumber'] : 0;

    header("Content-Type: text/html");

    $args = array(
        'suppress_filters' => true,
        'post_type' => 'post',
        'posts_per_page' => $ppp,
        'cat' => 8,
        'paged'    => $page,
    );

    $loop = new WP_Query($args);

    $out = '';

    if ($loop -> have_posts()) :  while ($loop -> have_posts()) : $loop -> the_post();
        $out .= '<div class="small-12 large-4 columns">
                <h1>'.get_the_title().'</h1>
                <p>'.get_the_content().'</p>
         </div>';

    endwhile;
    endif;
    wp_reset_postdata();
    die($out);
}

add_action('wp_ajax_nopriv_more_post_ajax', 'more_post_ajax');
add_action('wp_ajax_more_post_ajax', 'more_post_ajax');

Here I've added paged key in the array, so that the loop can keep track on what page you are when you load your posts.

If you've added your category in the loader, you'd add:

$cat = (isset($_POST['cat'])) ? $_POST['cat'] : '';

And instead of 8, you'd put $cat. This will be in the $_POST array, and you'll be able to use it in ajax.

Last part is the ajax itself. In functions.js I put inside the $(document).ready(); enviroment

var ppp = 3; // Post per page
var cat = 8;
var pageNumber = 1;


function load_posts(){
    pageNumber++;
    var str = '&cat=' + cat + '&pageNumber=' + pageNumber + '&ppp=' + ppp + '&action=more_post_ajax';
    $.ajax({
        type: "POST",
        dataType: "html",
        url: ajax_posts.ajaxurl,
        data: str,
        success: function(data){
            var $data = $(data);
            if($data.length){
                $("#ajax-posts").append($data);
                $("#more_posts").attr("disabled",false);
            } else{
                $("#more_posts").attr("disabled",true);
            }
        },
        error : function(jqXHR, textStatus, errorThrown) {
            $loader.html(jqXHR + " :: " + textStatus + " :: " + errorThrown);
        }

    });
    return false;
}

$("#more_posts").on("click",function(){ // When btn is pressed.
    $("#more_posts").attr("disabled",true); // Disable the button, temp.
    load_posts();
});

Saved it, tested it, and it works :)

Images as proof (don't mind the shoddy styling, it was done quickly). Also post content is gibberish xD

UPDATE

For 'infinite load' instead on click event on the button (just make it invisible, with visibility: hidden;) you can try with

$(window).on('scroll', function () {
    if ($(window).scrollTop() + $(window).height()  >= $(document).height() - 100) {
        load_posts();
    }
});

This should run the load_posts() function when you're 100px from the bottom of the page. In the case of the tutorial on my site you can add a check to see if the posts are loading (to prevent firing of the ajax twice), and you can fire it when the scroll reaches the top of the footer

$(window).on('scroll', function(){
    if($('body').scrollTop()+$(window).height() > $('footer').offset().top){
        if(!($loader.hasClass('post_loading_loader') || $loader.hasClass('post_no_more_posts'))){
                load_posts();
        }
    }
});

Now the only drawback in these cases is that you could never scroll to the value of $(document).height() - 100 or $('footer').offset().top for some reason. If that should happen, just increase the number where the scroll goes to.

You can easily check it by putting console.logs in your code and see in the inspector what they throw out

$(window).on('scroll', function () {
    console.log($(window).scrollTop() + $(window).height());
    console.log($(document).height() - 100);
    if ($(window).scrollTop() + $(window).height()  >= $(document).height() - 100) {
        load_posts();
    }
});

And just adjust accordingly ;)

Hope this helps :) If you have any questions just ask.

If you want to ask based on condition:

var ask = true
window.onbeforeunload = function (e) {
    if(!ask) return null
    e = e || window.event;
    //old browsers
    if (e) {e.returnValue = 'Sure?';}
    //safari, chrome(chrome ignores text)
    return 'Sure?';
};

An example:

use strict;

for (1 .. 2){
    # Both variables are lexically scoped to the block.
    our ($o);  # Belongs to 'main' package.
    my  ($m);  # Does not belong to a package.

    # The variables differ with respect to newness.
    $o ++;
    $m ++;
    print __PACKAGE__, " >> o=$o m=$m\n";  # $m is always 1.

    # The package has changed, but we still have direct,
    # unqualified access to both variables, because the
    # lexical scope has not changed.
    package Fubb;
    print __PACKAGE__, " >> o=$o m=$m\n";
}

# The our() and my() variables differ with respect to privacy.
# We can still access the variable declared with our(), provided
# that we fully qualify its name, but the variable declared
# with my() is unavailable.
print __PACKAGE__, " >> main::o=$main::o\n";  # 2
print __PACKAGE__, " >> main::m=$main::m\n";  # Undefined.

# Attempts to access the variables directly won't compile.
# print __PACKAGE__, " >> o=$o\n";
# print __PACKAGE__, " >> m=$m\n";

# Variables declared with use vars() are like those declared
# with our(): belong to a package; not private; and not new.
# However, their scoping is package-based rather than lexical.
for (1 .. 9){
    use vars qw($uv);
    $uv ++;
}

# Even though we are outside the lexical scope where the
# use vars() variable was declared, we have direct access
# because the package has not changed.
print __PACKAGE__, " >> uv=$uv\n";

# And we can access it from another package.
package Bubb;
print __PACKAGE__, " >> main::uv=$main::uv\n";

Here is a function I made to return a SQL query with "resolved" parameters.

function paramToString($query, $parameters) {
    if(!empty($parameters)) {
        foreach($parameters as $key => $value) {
            preg_match('/(\?(?!=))/i', $query, $match, PREG_OFFSET_CAPTURE);
            $query = substr_replace($query, $value, $match[0][1], 1);
        }
    }
    return $query;
    $query = "SELECT email FROM table WHERE id = ? AND username = ?";
    $values = [1, 'Super'];

    echo paramToString($query, $values);

Assuming you execute like this

$values = array(1, 'SomeUsername');
$smth->execute($values);

This function DOES NOT add quotes to queries but does the job for me.

A cleaner approach ( only for test environment) in httpcliet4.3.3 is as follows.

SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(sslContext,SSLConnectionSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);

CloseableHttpClient httpclient = HttpClients.custom().setSSLSocketFactory(sslsf).build();

You can actually chain multiple $lookup stages. Based on the names of the collections shared by profesor79, you can do this :

db.sivaUserInfo.aggregate([
    {
        $lookup: {
           from: "sivaUserRole",
           localField: "userId",
           foreignField: "userId",
           as: "userRole"
        }
    },
    {
        $unwind: "$userRole"
    },
    {
        $lookup: {
            from: "sivaUserInfo",
            localField: "userId",
            foreignField: "userId",
            as: "userInfo"
        }
    },
    {
        $unwind: "$userInfo"
    }
])

This will return the following structure :

{
    "_id" : ObjectId("56d82612b63f1c31cf906003"),
    "userId" : "AD",
    "phone" : "0000000000",
    "userRole" : {
        "_id" : ObjectId("56d82612b63f1c31cf906003"),
        "userId" : "AD",
        "role" : "admin"
    },
    "userInfo" : {
        "_id" : ObjectId("56d82612b63f1c31cf906003"),
        "userId" : "AD",
        "phone" : "0000000000"
    }
}

Maybe this could be considered an anti-pattern because MongoDB wasn't meant to be relational but it is useful.

1. If you have android studio installed within your system, then copy the templates folder from C:\Program Files\Android\Android Studio\plugins\android\lib\templates
2. Paste it in the folder C:\Users\<user-name>\AppData\Local\Android\sdk\tools
3. Run the command: ionic build android

All necessary jar files will be downloaded and apk file for the application will be generated.

Note: Set environment variables to C:\Users\<user-name>\AppData\Local\Android\sdk\tools. Also set user-name to your current username.

for those who are having trouble with similar problems in Numpy, a very simple solution would be:

defining dtype=object when defining an array for assigning values to it. for instance:

out = np.empty_like(lil_img, dtype=object)

The method, as indicated by their technical considerations page, is correct - so you're definitely not doing anything wrong. However, this bug report on Google Code indicate that there is a problem with the fonts Google produced for this, specifically the IE version. This only seems to affect only some fonts, but it's a real bummmer.

The answers on the thread indicate that the problem lies with the files Google's serving up, so there's nothing you can do about it. The author suggest getting the fonts from alternative locations, like FontSquirrel, and serving it locally instead, in which case you might also be interested in sites like the League of Movable Type.

N.B. As of Oct 2010 the issue is reported as fixed and closed on the Google Code bug report.

Git has two types of branches: local and remote. To use git pull and git push as you'd like, you have to tell your local branch (my_test) which remote branch it's tracking. In typical Git fashion this can be done in both the config file and with commands.

Commands

Make sure you're on your master branch with

1)git checkout master

then create the new branch with

2)git branch --track my_test origin/my_test

and check it out with

3)git checkout my_test.

You can then push and pull without specifying which local and remote.

However if you've already created the branch then you can use the -u switch to tell git's push and pull you'd like to use the specified local and remote branches from now on, like so:

git pull -u my_test origin/my_test
git push -u my_test origin/my_test

Config

The commands to setup remote branch tracking are fairly straight forward but I'm listing the config way as well as I find it easier if I'm setting up a bunch of tracking branches. Using your favourite editor open up your project's .git/config and add the following to the bottom.

[remote "origin"]
    url = [email protected]:username/repo.git
    fetch = +refs/heads/*:refs/remotes/origin/*
[branch "my_test"]
    remote = origin
    merge = refs/heads/my_test

This specifies a remote called origin, in this case a GitHub style one, and then tells the branch my_test to use it as it's remote.

You can find something very similar to this in the config after running the commands above.

Some useful resources:

• http://www.kernel.org/pub/software/scm/git/docs/git-branch.html
• http://gitready.com/beginner/2009/03/09/remote-tracking-branches.html

This will do

foreach($results['data'] as $result) {
    echo $result['type'], '<br>';
}

0.0.0.0/0 for all IPv4 addresses

::0/0 for all IPv6 addresses

all to match any IP address

samehost to match any of the server's own IP addresses

samenet to match any address in any subnet that the server is directly connected to.

e.g.

host    all             all             0.0.0.0/0            md5

.set_title('') can be used to add title to Seaborn Plot

import seaborn as sb
sb.boxplot().set_title('Title')

The modern event handling method:

element.addEventListener('click', startDragDrop, false);
element.addEventListener('click', spyOnUser, false);

The first argument is the event, the second is the function and the third specifies whether to allow event bubbling.

From QuirksMode:

W3C’s DOM Level 2 Event specification pays careful attention to the problems of the traditional model. It offers a simple way to register as many event handlers as you like for the same event on one element.

The key to the W3C event registration model is the method addEventListener(). You give it three arguments: the event type, the function to be executed and a boolean (true or false) that I’ll explain later on. To register our well known doSomething() function to the onclick of an element you do:

Full details here: http://www.quirksmode.org/js/events_advanced.html

Using jQuery

if you're using jQuery, there is a nice API for event handling:

$('#myElement').bind('click', function() { doStuff(); });
$('#myElement').bind('click', function() { doMoreStuff(); });
$('#myElement').bind('click', doEvenMoreStuff);

Full details here: http://api.jquery.com/category/events/

Try this:-

ALTER TABLE <TABLE NAME to be moved> MOVE TABLESPACE <destination TABLESPACE NAME>

Very nice suggestion from IVAN in comments so thought to add in my answer

Note: this will invalidate all table's indexes. So this command is usually followed by

alter index <owner>."<index_name>" rebuild;

You can use termcolor for this:

 sudo pip install termcolor

To print a colored bold:

 from termcolor import colored
 print(colored('Hello', 'green', attrs=['bold']))

For more information, see termcolor on PyPi.

simple-colors is another package with similar syntax:

 from simple_colors import *
 print(green('Hello', ['bold'])

The equivalent in colorama may be Style.BRIGHT.

Getting the Phone Number, IMEI, and SIM Card ID

TelephonyManager tm = (TelephonyManager) 
            getSystemService(Context.TELEPHONY_SERVICE);        

For SIM card, use the getSimSerialNumber()

    //---get the SIM card ID---
    String simID = tm.getSimSerialNumber();
    if (simID != null)
        Toast.makeText(this, "SIM card ID: " + simID, 
        Toast.LENGTH_LONG).show();

Phone number of your phone, use the getLine1Number() (some device's dont return the phone number)

    //---get the phone number---
    String telNumber = tm.getLine1Number();
    if (telNumber != null)        
        Toast.makeText(this, "Phone number: " + telNumber, 
        Toast.LENGTH_LONG).show();

IMEI number of the phone, use the getDeviceId()

    //---get the IMEI number---
    String IMEI = tm.getDeviceId();
    if (IMEI != null)        
        Toast.makeText(this, "IMEI number: " + IMEI, 
        Toast.LENGTH_LONG).show();

Permissions needed

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

All the above mentioned solutions to the problem are correct. But if you are using lazy loading, FormsModule needs to be imported in the child module which has forms in it. Adding it in app.module.ts won't help.

I use them sparingly, but they can be pretty convenient:

def log(msg):
   log.logfile.write(msg)

Now I can use log throughout my module, and redirect output simply by setting log.logfile. There are lots and lots of other ways to accomplish that, but this one's lightweight and dirt simple. And while it smelled funny the first time I did it, I've come to believe that it smells better than having a global logfile variable.

>>> d = {320:1, 321:0, 322:3}
>>> min(d, key=lambda k: d[k]) 
321

It can be as simple as:

default_data['item3'] = 3

As Chris' answer says, you can use update to add more than one item. An example:

default_data.update({'item4': 4, 'item5': 5})

Please see the documentation about dictionaries as data structures and dictionaries as built-in types.

Here is another way without using additional libraries (no error checking included)

function saveAll( callback ){
  var count = 0;
  docs.forEach(function(doc){
      doc.save(function(err){
          count++;
          if( count == docs.length ){
             callback();
          }
      });
  });
}

I highly recommend reading the book 'Effective Java' from Joshua Bloch.

Change your object.

var top_brands = [ 
  { key: 'Adidas', value: 100 }, 
  { key: 'Nike', value: 50 }
];

var $brand_options = $("#top-brands");

$.each(top_brands, function(brand) {
  $brand_options.append(
    $("<option />").val(brand.key).text(brand.key + " " + brand.value)
  );
});

As a rule of thumb:

• An object has data and structure.
• 'Adidas', 'Nike', 100 and 50 are data.
• Object keys are structure. Using data as the object key is semantically wrong. Avoid it.

There are no semantics in {Nike: 50}. What's "Nike"? What's 50?

{key: 'Nike', value: 50} is a little better, since now you can iterate an array of these objects and values are at predictable places. This makes it easy to write code that handles them.

Better still would be {vendor: 'Nike', itemsSold: 50}, because now values are not only at predictable places, they also have meaningful names. Technically that's the same thing as above, but now a person would also understand what the values are supposed to mean.

Swift 4 Dictionary extension.

extension Dictionary {
    var jsonStringRepresentation: String? {
        guard let theJSONData = try? JSONSerialization.data(withJSONObject: self,
                                                            options: [.prettyPrinted]) else {
            return nil
        }

        return String(data: theJSONData, encoding: .ascii)
    }
}

Complement with an additional example, you can access all job parameters in JavaConfig class:

@Bean
@StepScope
public ItemStreamReader<GenericMessage> reader(@Value("#{jobParameters}") Map<String,Object> jobParameters){
          ....
}

In my case, Unity turned out to be a red herring. My problem was a result of different projects targeting different versions of .NET. Unity was set up right and everything was registered with the container correctly. Everything compiled fine. But the type was in a class library, and the class library was set to target .NET Framework 4.0. The WebApi project using Unity was set to target .NET Framework 4.5. Changing the class library to also target 4.5 fixed the problem for me.

I discovered this by commenting out the DI constructor and adding default constructor. I commented out the controller methods and had them throw NotImplementedException. I confirmed that I could reach the controller, and seeing my NotImplementedException told me it was instantiating the controller fine. Next, in the default constructor, I manually instantiated the dependency chain instead of relying on Unity. It still compiled, but when I ran it the error message came back. This confirmed for me that I still got the error even when Unity was out of the picture. Finally, I started at the bottom of the chain and worked my way up, commenting out one line at a time and retesting until I no longer got the error message. This pointed me in the direction of the offending class, and from there I figured out that it was isolated to a single assembly.

^[0-9]+(\.[0-9]{1,2})?$

And since regular expressions are horrible to read, much less understand, here is the verbose equivalent:

^                         # Start of string
 [0-9]+                   # Require one or more numbers
       (                  # Begin optional group
        \.                # Point must be escaped or it is treated as "any character"
          [0-9]{1,2}      # One or two numbers
                    )?    # End group--signify that it's optional with "?"
                      $   # End of string

You can replace [0-9] with \d in most regular expression implementations (including PCRE, the most common). I've left it as [0-9] as I think it's easier to read.

Also, here is the simple Python script I used to check it:

import re
deci_num_checker = re.compile(r"""^[0-9]+(\.[0-9]{1,2})?$""")

valid = ["123.12", "2", "56754", "92929292929292.12", "0.21", "3.1"]
invalid = ["12.1232", "2.23332", "e666.76"]

assert len([deci_num_checker.match(x) != None for x in valid]) == len(valid)
assert [deci_num_checker.match(x) == None for x in invalid].count(False) == 0

The __init__.py file makes Python treat directories containing it as modules.

Furthermore, this is the first file to be loaded in a module, so you can use it to execute code that you want to run each time a module is loaded, or specify the submodules to be exported.

Running Docker inside Docker (a.k.a. dind), while possible, should be avoided, if at all possible. (Source provided below.) Instead, you want to set up a way for your main container to produce and communicate with sibling containers.

Jérôme Petazzoni — the author of the feature that made it possible for Docker to run inside a Docker container — actually wrote a blog post saying not to do it. The use case he describes matches the OP's exact use case of a CI Docker container that needs to run jobs inside other Docker containers.

Petazzoni lists two reasons why dind is troublesome:

1. It does not cooperate well with Linux Security Modules (LSM).
2. It creates a mismatch in file systems that creates problems for the containers created inside parent containers.

From that blog post, he describes the following alternative,

[The] simplest way is to just expose the Docker socket to your CI container, by bind-mounting it with the -v flag.

Simply put, when you start your CI container (Jenkins or other), instead of hacking something together with Docker-in-Docker, start it with:

docker run -v /var/run/docker.sock:/var/run/docker.sock ...

Now this container will have access to the Docker socket, and will therefore be able to start containers. Except that instead of starting "child" containers, it will start "sibling" containers.

From https://gist.github.com/nestoru/4f684f206c399894952d

# Let us consider the following typical mysql backup script:
mysqldump --routines --no-data -h $mysqlHost -P $mysqlPort -u $mysqlUser -p$mysqlPassword $database

# It succeeds but stderr will get:
# Warning: Using a password on the command line interface can be insecure.
# You can fix this with the below hack:
credentialsFile=/mysql-credentials.cnf
echo "[client]" > $credentialsFile
echo "user=$mysqlUser" >> $credentialsFile
echo "password=$mysqlPassword" >> $credentialsFile
echo "host=$mysqlHost" >> $credentialsFile
mysqldump --defaults-extra-file=$credentialsFile --routines --no-data $database

# This should not be IMO an error. It is just a 'considered best practice'
# Read more from http://thinkinginsoftware.blogspot.com/2015/10/solution-for-mysql-warning-using.html

Although there isn't a syntax, you can still get close by using the built-in block comment buttons:

If you're not viewing the Edit toolbar already, right-click on the toolbar and enable the Edit toolbar:

Then, select a block of code and hit the "Comment Block" button; or if it's already commented out, use the "Uncomment Block" button:

Fast and easy!

<link rel="apple-touch-icon" sizes="114x114" href="${resource(dir: 'images', file: 
'apple-touch-icon-retina.png')}">

or you can use this one

<link rel="shortcut icon" sizes="114x114" href="${resource(dir: 'images', file: 'favicon.ico')}"
type="image/x-icon">

If you are using a custom binding, you can set the values like this:

<customBinding>
    <binding name="x">
        <httpsTransport maxBufferSize="2147483647" maxReceivedMessageSize="2147483647" />
    </binding>
</customBinding>

A few wrinkles that I don't see being addressed in other answers:

1. the element can contain multiple levels of child nodes (e.g. child nodes that have child nodes that have child nodes...)
2. a selection can consist of different start and end positions (e.g. multiple chars are selected)
3. the node containing a Caret start/end may not be either the element or its direct children

Here's a way to get start and end positions as offsets to the element's textContent value:

// node_walk: walk the element tree, stop when func(node) returns false
function node_walk(node, func) {
  var result = func(node);
  for(node = node.firstChild; result !== false && node; node = node.nextSibling)
    result = node_walk(node, func);
  return result;
};

// getCaretPosition: return [start, end] as offsets to elem.textContent that
//   correspond to the selected portion of text
//   (if start == end, caret is at given position and no text is selected)
function getCaretPosition(elem) {
  var sel = window.getSelection();
  var cum_length = [0, 0];

  if(sel.anchorNode == elem)
    cum_length = [sel.anchorOffset, sel.extentOffset];
  else {
    var nodes_to_find = [sel.anchorNode, sel.extentNode];
    if(!elem.contains(sel.anchorNode) || !elem.contains(sel.extentNode))
      return undefined;
    else {
      var found = [0,0];
      var i;
      node_walk(elem, function(node) {
        for(i = 0; i < 2; i++) {
          if(node == nodes_to_find[i]) {
            found[i] = true;
            if(found[i == 0 ? 1 : 0])
              return false; // all done
          }
        }

        if(node.textContent && !node.firstChild) {
          for(i = 0; i < 2; i++) {
            if(!found[i])
              cum_length[i] += node.textContent.length;
          }
        }
      });
      cum_length[0] += sel.anchorOffset;
      cum_length[1] += sel.extentOffset;
    }
  }
  if(cum_length[0] <= cum_length[1])
    return cum_length;
  return [cum_length[1], cum_length[0]];
}

Set the href attribute with

$(selector).attr('href', 'url_goes_here');

and read it using

$(selector).attr('href');

Where "selector" is any valid jQuery selector for your <a> element (".myClass" or "#myId" to name the most simple ones).

Hope this helps !

This will download all packages and dependencies (no already installed) to a directory of your choice:

sudo apt-get install -d -o Dir::Cache=/path-to/directory/apt/cache -o Dir::State::Lists=/path-to/directory/apt/lists packages

Make sure /path-to/directory/apt/cache and /path-to/directory/apt/lists exist. If you don't set -o Dir::Cache it points to /var/cache/apt, Dir::State::Lists points to /var/lib/apt/lists (which keeps the index files of available packages)

Both -o options can be used with update and upgrade instead of install.

On different machine run the same command without '-d'

Forever was not made to get node applications running as services. The right approach is to either create an /etc/inittab entry (old linux systems) or an upstart (newer linux systems).

Here's some documentation on how to set this up as an upstart: https://github.com/cvee/node-upstart

As of .NET Core 2.0, the constructor Dictionary<TKey,TValue>(IEnumerable<KeyValuePair<TKey,TValue>>) now exists.

There are lots of solutions:

b = Arrays.copyOf(a, a.length);

Which allocates a new array, copies over the elements of a, and returns the new array.

Or

b = new int[a.length];
System.arraycopy(a, 0, b, 0, b.length);

Which copies the source array content into a destination array that you allocate yourself.

Or

b = a.clone();

which works very much like Arrays.copyOf(). See this thread.

Or the one you posted, if you reverse the direction of the assignment in the loop:

b[i] = a[i]; // NOT a[i] = b[i];

You should have a look at numpy if you do matrix manipulation. This is a module mainly written in C, which will be much faster than programming in pure python. Here is an example of how to invert a matrix, and do other matrix manipulation.

from numpy import matrix
from numpy import linalg
A = matrix( [[1,2,3],[11,12,13],[21,22,23]]) # Creates a matrix.
x = matrix( [[1],[2],[3]] )                  # Creates a matrix (like a column vector).
y = matrix( [[1,2,3]] )                      # Creates a matrix (like a row vector).
print A.T                                    # Transpose of A.
print A*x                                    # Matrix multiplication of A and x.
print A.I                                    # Inverse of A.
print linalg.solve(A, x)     # Solve the linear equation system.

You can also have a look at the array module, which is a much more efficient implementation of lists when you have to deal with only one data type.

Once you start the web installer there's an option to download media, that being the full installation package. There's even download options for what kind of package to download.

Actually, VisualVM can process application core dump.

Just invoke "File/Add VM Coredump" and will add a new application in the application explorer. You can then take thread dump or heap dump of that JVM.

The 'V' of HSV is probably what you're looking for. MATLAB has an rgb2hsv function and the previously cited wikipedia article is full of pseudocode. If an RGB2HSV conversion is not feasible, a less accurate model would be the grayscale version of the image.

Just use it like it was an object you defined. i.e.

$trends = $json_output->trends;

In Linq-to-SQL if you try to get the first element on a query with no results you will get sequence contains no elements error. I can assure you that the mentioned error is not equal to object reference not set to an instance of an object. in conclusion no, it won't return null since null can't say sequence contains no elements it will always say object reference not set to an instance of an object ;)

You can download the 10.7 Lion JDK from http://connect.apple.com.

1. Sign in and click the java section on the right.

2. The jdk is installed into a different location then previous. This will result in IDEs (such as Eclipse) being unable to locate source code and javadocs.

3. At the time of writing the JDK ended up here:

   /Library/Java/JavaVirtualMachines/1.6.0_26-b03-383.jdk/Contents/Home

4. Open up eclipse preferences and go to Java --> Installed JREs page

5. Rather than use the "JVM Contents (MacOS X Default) we will need to use the JDK location

6. At the time of writing Search is not aware of the new JDK location; we we will need to click on the Add button

7. From the Add JRE wizard choose "MacOS X VM" for the JRE Type

8. For the JRE Definition Page we need to fill in the following:

   • JRE Home: /Library/Java/JavaVirtualMachines/1.6.0_26-b03-383.jdk/Contents/Home

9. The other fields will now auto fill, with the default JRE name being "Home". You can quickly correct this to something more meaningful:

   • JRE name: System JDK

10. Finish the wizard and return to the Installed JREs page

11. Choose "System JDK" from the list

12. You can now develop normally with:

    • javadocs correctly shown for base classes
    • source code correctly shown when debugging

Return an Array Of Objects

private static Object[] f () 
{ 
     double x =1.0;  
     int y= 2 ;
     return new Object[]{Double.valueOf(x),Integer.valueOf(y)};  
}

As of Git for Windows v2.15.0 (October 30th 2017) it is now possible to configure nano or Notepad++ as Git's default editor instead of vim.

During the installation you'll see the following screen:

Solution from Google team

Starting from Android 5.0 that's easily achievable through the new Google Play In App updates mechanism. The requirements are to have Play Core library of version 1.5.0+ and use App Bundles idstribution instead of apks.

The library provides you 2 different ways to notify the users about the update:

1. Flexible, when users can continue using the app while it is being updated in the background.

2. Immediate - blocking screen that doesn't allow a user to enter the app until they update it.

There are next steps to implement it:

1. Check for update availability
2. Start an update
3. Get a callback for update status
4. Handle the update

All of these steps implementations are described in details on the official site: https://developer.android.com/guide/app-bundle/in-app-updates

in laravel 5 first we need to create migration and then run the migration

Step 1.

php artisan make:migration create_users_table --create=users

Step 2.

php artisan migrate

Try $("#divVideo video")[0].load(); after you changed the src attribute.

Here is how to get rid of the top section header in a grouped UITableView, in Swift:

tableView.tableHeaderView = UIView(frame: CGRect(x: 0, y: 0, width: 0, height: CGFloat.leastNormalMagnitude))

Open up your build.gradle file located here:

This is the old way of writing the dependency libraries (for gradle version 2 and below):

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    testCompile 'junit:junit:4.12'
    compile files('libs/volley.jar')
    compile 'com.android.support:support-v4:21.+'
}

This is the new (right) way of importing the dependencies for gradle version 3:

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    testImplementation 'junit:junit:4.12'
    implementation files('libs/volley.jar')
    implementation 'com.android.support:support-v4:21.+'
}

1. find($id) takes an id and returns a single model. If no matching model exist, it returns null.

2. findOrFail($id) takes an id and returns a single model. If no matching model exist, it throws an error¹.

3. first() returns the first record found in the database. If no matching model exist, it returns null.

4. firstOrFail() returns the first record found in the database. If no matching model exist, it throws an error¹.

5. get() returns a collection of models matching the query.

6. pluck($column) returns a collection of just the values in the given column. In previous versions of Laravel this method was called lists.

7. toArray() converts the model/collection into a simple PHP array.

Note: a collection is a beefed up array. It functions similarly to an array, but has a lot of added functionality, as you can see in the docs.

Unfortunately, PHP doesn't let you use a collection object everywhere you can use an array. For example, using a collection in a foreach loop is ok, put passing it to array_map is not. Similarly, if you type-hint an argument as array, PHP won't let you pass it a collection. Starting in PHP 7.1, there is the iterable typehint, which can be used to accept both arrays and collections.

If you ever want to get a plain array from a collection, call its all() method.

¹ The error thrown by the findOrFail and firstOrFail methods is a ModelNotFoundException. If you don't catch this exception yourself, Laravel will respond with a 404, which is what you want most of the time.

Less efficient, but simpler-looking:

m0 = re.match("I love (\w+)", statement)
m1 = re.match("Ich liebe (\w+)", statement)
m2 = re.match("Je t'aime (\w+)", statement)
if m0:
  print "He loves",m0.group(1)
elif m1:
  print "Er liebt",m1.group(1)
elif m2:
  print "Il aime",m2.group(1)

The problem with the Perl stuff is the implicit updating of some hidden variable. That's simply hard to achieve in Python because you need to have an assignment statement to actually update any variables.

The version with less repetition (and better efficiency) is this:

pats = [
    ("I love (\w+)", "He Loves {0}" ),
    ("Ich liebe (\w+)", "Er Liebe {0}" ),
    ("Je t'aime (\w+)", "Il aime {0}")
 ]
for p1, p3 in pats:
    m= re.match( p1, statement )
    if m:
        print p3.format( m.group(1) )
        break

A minor variation that some Perl folk prefer:

pats = {
    "I love (\w+)" : "He Loves {0}",
    "Ich liebe (\w+)" : "Er Liebe {0}",
    "Je t'aime (\w+)" : "Il aime {0}",
}
for p1 in pats:
    m= re.match( p1, statement )
    if m:
        print pats[p1].format( m.group(1) )
        break

This is hardly worth mentioning except it does come up sometimes from Perl programmers.

You just need to:

Step 1: Go home directory of C:\ with typing cd.. (2 times)

Step 2: It appears now C:\>

Step 3: Type dir Windows\System32\run

That's all, it shows complete files & folder details inside target folder.

Details: I used Windows\System32\com folder as example, you should type your own folder name etc. Windows\System32\run

+= is just a shortcut for writing

number = 4
number = number + 1

So instead you would write

numbers = 4
numbers += 1

Both ways are correct but example two helps you write a little less code

Here there is my example of animation a staff list with expand a description.

<html>
  <head>
    <style>
      .staff {            margin:10px 0;}
      .staff-block{       float: left; width:48%; padding-left: 10px; padding-bottom: 10px;}
      .staff-title{       font-family: Verdana, Tahoma, Arial, Serif; background-color: #1162c5; color: white; padding:4px; border: solid 1px #2e3d7a; border-top-left-radius:3px; border-top-right-radius: 6px; font-weight: bold;}
      .staff-name {       font-family: Myriad Web Pro; font-size: 11pt; line-height:30px; padding: 0 10px;}
      .staff-name:hover { background-color: silver !important; cursor: pointer;}
      .staff-section {    display:inline-block; padding-left: 10px;}
      .staff-desc {       font-family: Myriad Web Pro; height: 0px; padding: 3px; overflow:hidden; background-color:#def; display: block; border: solid 1px silver;}
      .staff-desc p {     text-align: justify; margin-top: 5px;}
      .staff-desc img {   margin: 5px 10px 5px 5px; float:left; height: 185px; }
    </style>
  </head>
<body>
<!-- START STAFF SECTION -->
<div class="staff">
  <div class="staff-block">
    <div  class="staff-title">Staff</div>
    <div class="staff-section">
        <div class="staff-name">Maria Beavis</div>
        <div class="staff-desc">
          <p><img src="http://www.craigmarlatt.com/canada/images/security&defence/coulombe.jpg" />Maria earned a Bachelor of Commerce degree from McGill University in 2006 with concentrations in Finance and International Business. She has completed her wealth Management Essentials course with the Canadian Securities Institute and has worked in the industry since 2007.</p>
        </div>
        <div class="staff-name">Diana Smitt</div>
        <div class="staff-desc">
          <p><img src="http://www.craigmarlatt.com/canada/images/security&defence/coulombe.jpg" />Diana joined the Diana Smitt Group to help contribute to its ongoing commitment to provide superior investement advice and exceptional service. She has a Bachelor of Commerce degree from the John Molson School of Business with a major in Finance and has been continuing her education by completing courses.</p>
        </div>
        <div class="staff-name">Mike Ford</div>
        <div class="staff-desc">
          <p><img src="http://www.craigmarlatt.com/canada/images/security&defence/coulombe.jpg" />Mike: A graduate of École des hautes études commerciales (HEC Montreal), Guillaume holds the Chartered Investment Management designation (CIM). After having been active in the financial services industry for 4 years at a leading competitor he joined the Mike Ford Group.</p>
        </div>
    </div>
  </div>

  <div class="staff-block">
    <div  class="staff-title">Technical Advisors</div>
    <div class="staff-section">
        <div class="staff-name">TA Elvira Bett</div>
        <div class="staff-desc">
          <p><img src="http://www.craigmarlatt.com/canada/images/security&defence/coulombe.jpg" />Elvira has completed her wealth Management Essentials course with the Canadian Securities Institute and has worked in the industry since 2007. Laura works directly with Caroline Hild, aiding in revising client portfolios, maintaining investment objectives, and executing client trades.</p>
        </div>
        <div class="staff-name">TA Sonya Rosman</div>
        <div class="staff-desc">
          <p><img src="http://www.craigmarlatt.com/canada/images/security&defence/coulombe.jpg" />Sonya has a Bachelor of Commerce degree from the John Molson School of Business with a major in Finance and has been continuing her education by completing courses through the Canadian Securities Institute. She recently completed her Wealth Management Essentials course and became an Investment Associate.</p>
        </div>
        <div class="staff-name">TA Tim Herson</div>
        <div class="staff-desc">
          <p><img src="http://www.craigmarlatt.com/canada/images/security&defence/coulombe.jpg" />Tim joined his father&#8217;s group in order to continue advising affluent families in Quebec. He is currently President of the Mike Ford Professionals Association and a member of various other organisations.</p>
        </div>
    </div>
  </div>
</div>
<!-- STOP STAFF SECTION -->

<script src="http://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> 

<script language="javascript"><!--
//<![CDATA[
$('.staff-name').hover(function() {
    $(this).toggleClass('hover');
});
var lastItem;
    $('.staff-name').click(function(currentItem) {
        var currentItem = $(this);
      if ($(this).next().height() == 0) {
          $(lastItem).css({'font-weight':'normal'});
          $(lastItem).next().animate({height: '0px'},400,'swing');
          $(this).css({'font-weight':'bold'});
          $(this).next().animate({height: '300px',opacity: 1},400,'swing');
      } else {
          $(this).css({'font-weight':'normal'});
          $(this).next().animate({height: '0px',opacity: 1},400,'swing');
      }
      lastItem = $(this);
    });
//]]>
--></script>

</body></html>

Fiddle

Try JSMin, got C#, Java, C and other ports and readily available too.

I believe the original post was about removing the space between the buttons in a row, not adding space.

The trick is that the minimum space between the buttons was due to padding built into the buttons as part of the material design specification.

So, don't use buttons! But a GestureDetector instead. This widget type give the onClick / onTap functionality but without the styling.

See this post for an example.

https://stackoverflow.com/a/56001817/766115

The following code requires JHyperLink to be added to your build path.

JHyperlink stackOverflow = new JHyperlink("Click HERE!",
                "https://www.stackoverflow.com/");

JComponent[] messageComponents = new JComponent[] { stackOverflow };

JOptionPane.showMessageDialog(null, messageComponents, "StackOverflow",
                JOptionPane.PLAIN_MESSAGE);

Note that you can fill the JComponent array with more Swing components.

Result:

I've created a little Powershell function to emulate MSDOS pause. This handles whether running Powershell ISE or non ISE. (ReadKey does not work in powershell ISE). When running Powershell ISE, this function opens a Windows MessageBox. This can sometimes be confusing, because the MessageBox does not always come to the forefront. Anyway, here it goes:

Usage: pause "Press any key to continue"

Function definition:

Function pause ($message)
{
    # Check if running Powershell ISE
    if ($psISE)
    {
        Add-Type -AssemblyName System.Windows.Forms
        [System.Windows.Forms.MessageBox]::Show("$message")
    }
    else
    {
        Write-Host "$message" -ForegroundColor Yellow
        $x = $host.ui.RawUI.ReadKey("NoEcho,IncludeKeyDown")
    }
}

check if file exist in side the document/catchimage path :

NSString *stringPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)objectAtIndex:0];
NSString *tempName = [NSString stringWithFormat:@"%@/catchimage/%@.png",stringPath,@"file name"];
NSLog(@"%@",temName);
if([[NSFileManager defaultManager] fileExistsAtPath:temName]){
    // ur code here
} else {
    // ur code here** 
}

There are two ways I want to show you.

The first one is just a simple import of the required SVG.

import MyImageSvg from '../../path/to.svg';

Just remember to use a loader for e.g. Webpack:

 {
     test: /\.(ttf|eot|svg|woff(2)?)(\?[a-z0-9=&.]+)?$/,
     include: [Path.join(__dirname, "src/assets")],
     loader: "file-loader?name=assets/[name].[ext]"
 }

Another (and more elegant way) is that you can define an SVG icon sprite and use a component to fetch the correct sprite of the SVG. For example:

import React from "react";
import Icons from "../../assets/icons/icons.svg"; // Path to your icons.svg
import PropTypes from 'prop-types';

const Icon = ({ name, color, size }) => (
  <svg className={`icon icon-${name}`} fill={color} width={size} height={size}>
    <use xlinkHref={`${Icons}#icon-${name}`} />
  </svg>
);

Icon.propTypes = {
  name: PropTypes.string.isRequired,
  color: PropTypes.string,
  size: PropTypes.number
};

export default Icon;

The icon sprite (icons.svg) can be defined as:

<svg xmlns="http://www.w3.org/2000/svg" style="display: none;">

    <symbol id="icon-account-group" viewBox="0 0 512 512">
      <path d="m256 301l0-41c7-7 19-24 21-60 10-5 16-16 16-30 0-12-4-22-12-28 7-13 18-37 12-60-7-28-48-39-81-39-29 0-65 8-77 30-12-1-20 2-26 9-15 16-8 46-4 62 1 2 2 4 2 5l0 42c0 41 24 63 42 71l0 39c-8 3-17 7-26 10-56 20-104 37-112 64-11 31-11 102-11 105 0 6 5 11 11 11l384 0c6 0 10-5 10-11 0-3 0-74-10-105-11-31-69-48-139-74z m-235 168c1-20 3-66 10-88 5-16 57-35 99-50 12-4 23-8 34-12 4-2 7-6 7-10l0-54c0-4-3-9-8-10-1 0-35-12-35-54l0-42c0-3-1-5-2-11-2-8-9-34-2-41 3-4 11-3 15-2 6 1 11-2 13-8 3-13 29-22 60-22 31 0 57 9 60 22 5 17-6 37-11 48-3 6-5 10-5 14 0 5 5 10 11 10 3 0 5 6 5 11 0 4-2 11-5 11-6 0-11 4-11 10 0 43-16 55-16 55-3 2-5 6-5 9l0 54c0 4 2 8 7 10 51 19 125 41 132 62 8 22 9 68 10 88l-363 0z m480-94c-8-25-49-51-138-84l0-20c7-7 19-25 21-61 4-2 7-5 10-9 4-5 6-13 6-20 0-13-5-23-13-28 7-15 19-41 13-64-4-15-21-31-40-39-19-7-38-6-54 5-5 3-6 10-3 15 3 4 10 6 15 3 12-9 25-6 34-3 15 6 25 18 27 24 4 17-6 40-12 52-3 6-4 10-4 13 0 3 1 6 3 8 2 2 4 3 7 3 4 0 6 6 6 11 0 3-1 6-3 8-1 2-2 2-3 2-6 0-10 5-10 11 0 43-17 55-17 55-3 2-5 5-5 9l0 32c0 4 3 8 7 10 83 31 127 56 133 73 7 22 9 68 10 88l-43 0c-6 0-11 5-11 11 0 6 5 11 11 11l53 0c6 0 11-5 11-11 0-3 0-74-11-105z"/>
    </symbol>

    <symbol id="icon-arrow-down" viewBox="0 0 512 512">
      <path d="m508 109c-4-4-11-3-15 1l-237 269-237-269c-4-4-11-5-15-1-5 4-5 11-1 15l245 278c2 2 5 3 8 3 3 0 6-1 8-3l245-278c4-4 4-11-1-15z"/>
    </symbol>

    <symbol id="icon-arrow-left" viewBox="0 0 512 512">
      <path d="m133 256l269-237c4-4 5-11 1-15-4-5-11-5-15-1l-278 245c-2 2-3 5-3 8 0 3 1 6 3 8l278 245c2 2 4 3 7 3 3 0 6-1 8-4 4-4 3-11-1-15z"/>
    </symbol>

    <symbol id="icon-arrow-right" viewBox="0 0 512 512">
      <path d="m402 248l-278-245c-4-4-11-4-15 1-4 4-3 11 1 15l269 237-269 237c-4 4-5 11-1 15 2 3 5 4 8 4 3 0 5-1 7-3l278-245c2-2 3-5 3-8 0-3-1-6-3-8z"/>
    </symbol>
</svg>

You can define your own icon sprite on http://fontastic.me/ for free.

And the usage: <Icon name="arrow-down" color="#FFFFFF" size={35} />

And possible add some simple styling for using the icons everywhere:

[class^="icon-"], [class*=" icon-"] {
    display: inline-block;
    vertical-align: middle;
}

I personally avoid else blocks when possible. See the Anti-if Campaign

Also, they don't charge 'extra' for the line, you know :p

"Simple is better than complex" & "Readability is king"

delta = 1 if (A > B) else -1
return A + delta

Temporarily update the retention time on the topic to one second:

kafka-topics.sh --zookeeper <zkhost>:2181 --alter --topic <topic name> --config retention.ms=1000

And in newer Kafka releases, you can also do it with kafka-configs --entity-type topics

kafka-configs.sh --zookeeper <zkhost>:2181 --entity-type topics --alter --entity-name <topic name> --add-config retention.ms=1000

then wait for the purge to take effect (about one minute). Once purged, restore the previous retention.ms value.

Just discovered this:

SELECT * FROM OPENROWSET(BULK N'<PATH_TO_FILE>', SINGLE_CLOB) AS Contents

It'll pull in the contents of the file as varchar(max). Replace SINGLE_CLOB with:

SINGLE_NCLOB for nvarchar(max) SINGLE_BLOB for varbinary(max)

Thanks to http://www.mssqltips.com/sqlservertip/1643/using-openrowset-to-read-large-files-into-sql-server/ for this!

As suggested here by @0x7fffffff, if you have UINavigationController it can be easier to do:

YourViewController *rootController =
    (YourViewController *)
        [self.navigationController.viewControllers objectAtIndex: 0];

The code in the answer above returns UINavigation controller (if you have it) and if this is what you need, you can use self.navigationController.

The same way you declare any other variable, just use the bit type:

DECLARE @MyVar bit
Set @MyVar = 1  /* True */
Set @MyVar = 0  /* False */

SELECT * FROM [MyTable] WHERE MyBitColumn = @MyVar

I was looking for something similar and I decided to make my own version where you can also specify a different seed if wanted (list of characters) as parameter:

CREATE FUNCTION `random_string`(length SMALLINT(3), seed VARCHAR(255)) RETURNS varchar(255) CHARSET utf8
    NO SQL
BEGIN
    SET @output = '';

    IF seed IS NULL OR seed = '' THEN SET seed = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789'; END IF;

    SET @rnd_multiplier = LENGTH(seed);

    WHILE LENGTH(@output) < length DO
        # Select random character and add to output
        SET @output = CONCAT(@output, SUBSTRING(seed, RAND() * (@rnd_multiplier + 1), 1));
    END WHILE;

    RETURN @output;
END

Can be used as:

SELECT random_string(10, '')

Which would use the built-in seed of upper- and lowercase characters + digits. NULL would also be value instead of ''.

But one could specify a custom seed while calling:

SELECT random_string(10, '1234')

This is probably slower than what you want, but you can do:

>>> tostring = vectorize(lambda x: str(x))
>>> numpy.where(tostring(phis).astype('float64') != phis)
(array([], dtype=int64),)

It looks like it rounds off the values when it converts to str from float64, but this way you can customize the conversion however you like.

I faced this problem once and in my case the soln is to close any process in the task manager that uses/accesses that file.

Command works only if "use" -command has been first used to define the database where working in. Table column renaming syntax using DATABASE.TABLE throws error and does not work. Version: HIVE 0.12.

EXAMPLE:

hive> ALTER TABLE databasename.tablename CHANGE old_column_name new_column_name;

  MismatchedTokenException(49!=90)
        at org.antlr.runtime.BaseRecognizer.recoverFromMismatchedToken(BaseRecognizer.java:617)
        at org.antlr.runtime.BaseRecognizer.match(BaseRecognizer.java:115)
        at org.apache.hadoop.hive.ql.parse.HiveParser.alterStatementSuffixExchangePartition(HiveParser.java:11492)
        ...

hive> use databasename;

hive> ALTER TABLE tablename CHANGE old_column_name new_column_name;

OK

sudo mv /usr/bin/python /usr/bin/python2
sudo ln -s $(which python3) /usr/bin/python

This will break scripts, but is exactly the way to change python. You should also rewrite the scripts to not assume python is 2.x. This will work regardless of the place where you call system or exec.

gcc and g++ are compiler-drivers of the GNU Compiler Collection (which was once upon a time just the GNU C Compiler).

Even though they automatically determine which backends (cc1 cc1plus ...) to call depending on the file-type, unless overridden with -x language, they have some differences.

The probably most important difference in their defaults is which libraries they link against automatically.

According to GCC's online documentation link options and how g++ is invoked, g++ is equivalent to gcc -xc++ -lstdc++ -shared-libgcc (the 1st is a compiler option, the 2nd two are linker options). This can be checked by running both with the -v option (it displays the backend toolchain commands being run).

You can use:

cat f.csv | sed 's/,/ /g' |  awk '{print $1 " / " $4}'

or

echo "Hello,World,Questions,Answers,bash shell,script" | sed 's/,/ /g' |  awk '{print $1 " / " $4}'

This is the part that replace comma with space

sed 's/,/ /g'

Introduction to Algorithms by Cormen et. al. is a standard introductory algorithms book, and is used by many universities, including my own. It has pretty good coverage and is very approachable.

And anything by Robert Sedgewick is good too.

I know your class is over, but in professional coding, let this be a lesson:

• "Deprecated" means "avoid use; it's going to be removed in the future"
• Deprecated things still work - just don't expect support or future-proofing
• If the requirement requires it, and you can't negotiate it away, just use the deprecated construct.
  
  • If you're really concerned, develop the alternative implementation on the side and keep it ready for the inevitable failure
  • Charge for the extra work now. By requesting a deprecated feature, they are asking you to double the work. You're going to see it again anyway, so might as well front-load it.
  • When the failure happens, let the interested party know that this was what you feared; that you prepared for it, but it'll take some time
  • Deploy your solution as quickly as you can (there will be bugs)
  • Gain rep for preventing excessive downtime.

A "floating point number" is how computers usually represent numbers that are not integers -- basically, a number with a decimal point. In C++ you declare them with float instead of int. A floating point exception is an error that occurs when you try to do something impossible with a floating point number, such as divide by zero.

From How do I install a Python package with a .whl file? [sic], How do I install a Python package USING a .whl file ?

For all Windows platforms:

1) Download the .WHL package install file.

2) Make Sure path [C:\Progra~1\Python27\Scripts] is in the system PATH string. This is for using both [pip.exe] and [easy-install.exe].

3) Make sure the latest version of pip.EXE is now installed. At this time of posting:

pip.EXE --version

  pip 9.0.1 from C:\PROGRA~1\Python27\lib\site-packages (python 2.7)

4) Run pip.EXE in an Admin command shell.

 - Open an Admin privileged command shell.

 > easy_install.EXE --upgrade  pip

 - Check the pip.EXE version:
 > pip.EXE --version

 pip 9.0.1 from C:\PROGRA~1\Python27\lib\site-packages (python 2.7)

 > pip.EXE install --use-wheel --no-index 
     --find-links="X:\path to wheel file\DownloadedWheelFile.whl"

Be sure to double-quote paths or path\filenames with embedded spaces in them ! Alternatively, use the MSW 'short' paths and filenames.

Just cast the entire sockaddr structure to a sockaddr_in. Then you can use:

char *ip = inet_ntoa(their_addr.sin_addr)

To retrieve the standard ip representation.

A code that displays the contents of the myfile.txt file on the screen

set %filecontent%=0
type %filename% >> %filecontent%
echo %filecontent%

It means you are testing, evaluating, or printing a variable that you have not yet assigned anything to. It means you either have a typo, or you need to check that the variable was initialized to something first. Check your logic paths, it may be set in one path but not in another.