I think the answer needs updating in 2017, as MS have made some (breaking) changes that is detailed here.

https://github.com/aspnet/EntityFramework/issues/7053

To summarise, you will now need a reference to EntityFrameWorkCore.Tools.DotNet in the Tools Section as below

"Microsoft.EntityFrameworkCore.Tools.DotNet": "1.0.0"

I have also posted a working project.json file below in case some one runs in problems.

{
  "dependencies": {
    "Microsoft.NETCore.App": {
      "version": "1.0.1",
      "type": "platform"
    },
    "Microsoft.AspNetCore.Diagnostics": "1.0.0",
    "Microsoft.AspNetCore.Server.IISIntegration": "1.0.0",
    "Microsoft.AspNetCore.Server.Kestrel": "1.0.1",
    "Microsoft.Extensions.Logging.Console": "1.0.0",
    "Microsoft.AspNetCore.Razor.Tools": {
      "version": "1.0.0-preview2-final",
      "type": "build"
    },
    "Microsoft.AspNetCore.StaticFiles": "1.0.0",
    "Microsoft.AspNetCore.Mvc": "1.0.1",
    "Microsoft.EntityFrameworkCore.SqlServer": "1.0.1",
    "Microsoft.Extensions.Configuration.Json": "1.0.1",
    "Microsoft.EntityFrameworkCore.Tools": {
      "version": "1.0.0-preview2-final",
      "type": "build"
    }
  },

  "tools": {
    "Microsoft.AspNetCore.Server.IISIntegration.Tools": "1.0.0-preview2-final",
    "Microsoft.AspNetCore.Razor.Tools": "1.0.0-preview2-final",
    "Microsoft.EntityFrameworkCore.Tools": "1.0.0-preview2-final",
    "Microsoft.EntityFrameworkCore.Tools.DotNet": "1.0.0"
  },

  "frameworks": {
    "netcoreapp1.0": {
      "imports": [
        "dotnet5.6",
        "portable-net45+win8"
      ]
    }
  },

  "buildOptions": {
    "emitEntryPoint": true,
    "preserveCompilationContext": true
  },

  "runtimeOptions": {
    "configProperties": {
      "System.GC.Server": true
    }
  },

  "publishOptions": {
    "include": [
      "wwwroot",
      "web.config"
    ]
  },

  "scripts": {
    "postpublish": [ "dotnet publish-iis --publish-folder %publish:OutputPath% --framework %publish:FullTargetFramework%" ]
  }
}

This worked for me (not using proxy):

1. set registry mirror for npm..

   npm config set registry http://skimdb.npmjs.com/registry

found mirror from docs:https://docs.npmjs.com/misc/registry

2. after this try npm install if it works then try to install whatever you want otherwise follow below steps as well

3.npm install -g handlebar //i did because it was showing error in npm log but you can skip

4.after that try to set again official registry

npm config set registry http://registry.npmjs.org

5.now try to install whatever package you want :-)

I was also facing this issue, below are the steps that I perform and it works for me always:

• Deleting the solution's .suo file.
• Deleting the Temporary ASP.NET Files (You can find it at find it at %WINDOW%\Microsoft.NET\Framework\\Temporary ASP.NET Files)
• Deleting all breakpoints in the application.

A potentially even better/cleaner potential way than the answers proposed is to overwrite the accessor, like this:

def status
  self['name_of_var'] || 'desired_default_value'
end

See "Overwriting default accessors" in the ActiveRecord::Base documentation and more from StackOverflow on using self.

Here's another way to do this:

- name: my command
  command: echo stuff
  when: "'groupname' not in group_names"

group_names is a magic variable as documented here: https://docs.ansible.com/ansible/latest/user_guide/playbooks_variables.html#accessing-information-about-other-hosts-with-magic-variables :

group_names is a list (array) of all the groups the current host is in.

I solved the same issue by removing:

compile fileTree(include: ['*.jar'], dir: 'libs')

and adding for each jar file:

compile files('libs/yourjarfile.jar')

To summarize a few items here: There are some pixel-by-pixel options that, while being simple just aren't fast.

@Luis' comment linking to: (archived) https://web.archive.org/web/20110827032809/http://www.switchonthecode.com/tutorials/csharp-tutorial-convert-a-color-image-to-grayscale is superb.

He runs through three different options and includes timings for each.

Consider a example where I have two databases namely allmsa.db and atlanta.db. Say the database allmsa.db has tables for all msas in US and database atlanta.db is empty.

Our target is to copy the table atlanta from allmsa.db to atlanta.db.

Steps

1. sqlite3 atlanta.db(to go into atlanta database)
2. Attach allmsa.db. This can be done using the command ATTACH '/mnt/fastaccessDS/core/csv/allmsa.db' AS AM; note that we give the entire path of the database to be attached.
3. check the database list using sqlite> .databases you can see the output as

seq  name             file                                                      
---  ---------------  ----------------------------------------------------------
0    main             /mnt/fastaccessDS/core/csv/atlanta.db                  
2    AM               /mnt/fastaccessDS/core/csv/allmsa.db 

4. now you come to your actual target. Use the command INSERT INTO atlanta SELECT * FROM AM.atlanta;

This should serve your purpose.

To your question whether the map was like a bucket: no.

It's like a list with name=value pairs whereas name doesn't need to be a String (it can, though).

To get an element, you pass your key to the get()-method which gives you the assigned object in return.

And a Hashmap means that if you're trying to retrieve your object using the get-method, it won't compare the real object to the one you provided, because it would need to iterate through its list and compare() the key you provided with the current element.

This would be inefficient. Instead, no matter what your object consists of, it calculates a so called hashcode from both objects and compares those. It's easier to compare two ints instead of two entire (possibly deeply complex) objects. You can imagine the hashcode like a summary having a predefined length (int), therefore it's not unique and has collisions. You find the rules for the hashcode in the documentation to which I've inserted the link.

If you want to know more about this, you might wanna take a look at articles on javapractices.com and technofundo.com

regards

If you have more than one element with the same ID, then you have invalid HTML.

But you can acheive the same result using classes instead. That's what they're designed for.

<input class='b' ... >

You can give it an ID as well if you need to, but it should be unique.

Once you've got the class in there, you can reference it with a dot instead of the hash, like so:

var value = $('#a .b').val();

or

var value = $('#a input.b').val();

which will limit it to 'b' class elements that are inputs within the form (which seems to be close to what you're asking for).

this problem related to /usr/local/var/mysql folder access, I remove this folder and reinstall mysql.

1. uninstall mysql with brew :

   brew uninstall mysql

2. sudo rm -r /usr/local/var/mysql

3. brew install [email protected]
4. mysql -u root

This solution works fine for me! BUT YOU LOST ALL YOUR DATABASES! WARNING!

"Stack Me 123 Heppa1 oeu".toCharArray() ?

Same as AMIB answer, for soft delete error "Unknown column 'table_alias.deleted_at'", just add ->withTrashed() then handle it yourself like ->whereRaw('items_alias.deleted_at IS NULL')

Byte is not a standard type in C/C++, so it is represented by char.

An advantage of this is that you can treat a basic_string as a byte array allowing for safe storage and function passing. This will help you avoid the memory leaks and segmentation faults you might encounter when using the various forms of char[] and char*.

For example, this creates a string as a byte array of null values:

typedef basic_string<unsigned char> u_string;

u_string bytes = u_string(16,'\0');

This allows for standard bitwise operations with other char values, including those stored in other string variables. For example, to XOR the char values of another u_string across bytes:

u_string otherBytes = "some more chars, which are just bytes";
for(int i = 0; i < otherBytes.length(); i++)
    bytes[i%16] ^= (int)otherBytes[i];

Just to clarify the best practice:

1. Text format messages should almost always be stored as TEXT (they end up being arbitrarily long)

2. String attributes should be stored as VARCHAR (the destination user name, the subject, etc...).

I understand that you've got a front end limit, which is great until it isn't. *grin* The trick is to think of the DB as separate from the applications that connect to it. Just because one application puts a limit on the data, doesn't mean that the data is intrinsically limited.

What is it about the messages themselves that forces them to never be more then 3000 characters? If it's just an arbitrary application constraint (say, for a text box or something), use a TEXT field at the data layer.

Windows 10 Home Edition does not have Local Users and Groups option so that is the reason you aren't able to see that in Computer Management.

You can use User Accounts by pressing Window+R, typing netplwiz and pressing OK as described here.

For Access 2010 - multiple steps required; I followed the same pattern as posted above, but thought I could help someone in Access. Worked great for me, I didn't have to keep a seeded table of dates.

Create a table called DUAL (similar to how the Oracle DUAL table works)

• ID (AutoNumber)
• DummyColumn (Text)
• Add one row values (1,"DummyRow")

Create a query named "ZeroThru9Q"; manually enter the following syntax:

SELECT 0 AS a
FROM dual
UNION ALL
SELECT 1
FROM dual
UNION ALL
SELECT 2
FROM dual
UNION ALL
SELECT 3
FROM dual
UNION ALL
SELECT 4
FROM dual
UNION ALL
SELECT 5
FROM dual
UNION ALL
SELECT 6
FROM dual
UNION ALL
SELECT 7
FROM dual
UNION ALL
SELECT 8
FROM dual
UNION ALL
SELECT 9
FROM dual;

Create a query named "TodayMinus1KQ" (for dates before today); manually enter the following syntax:

SELECT date() - (a.a + (10 * b.a) + (100 * c.a)) AS MyDate
FROM
  (SELECT *
   FROM ZeroThru9Q) AS a,

  (SELECT *
   FROM ZeroThru9Q) AS b,

  (SELECT *
   FROM ZeroThru9Q) AS c

Create a query named "TodayPlus1KQ" (for dates after today); manually enter the following syntax:

SELECT date() + (a.a + (10 * b.a) + (100 * c.a)) AS MyDate
FROM
  (SELECT *
   FROM ZeroThru9Q) AS a,

  (SELECT *
   FROM ZeroThru9Q) AS b,

  (SELECT *
   FROM ZeroThru9Q) AS c;

Create a union query named "TodayPlusMinus1KQ" (for dates +/- 1000 days):

SELECT MyDate
FROM TodayMinus1KQ
UNION
SELECT MyDate
FROM TodayPlus1KQ;

Now you can use the query:

SELECT MyDate
FROM TodayPlusMinus1KQ
WHERE MyDate BETWEEN #05/01/2014# and #05/30/2014#

You should be aware that you should avoid file I/O from within Linux kernel when possible. The main idea is to go "one level deeper" and call VFS level functions instead of the syscall handler directly:

Includes:

#include <linux/fs.h>
#include <asm/segment.h>
#include <asm/uaccess.h>
#include <linux/buffer_head.h>

Opening a file (similar to open):

struct file *file_open(const char *path, int flags, int rights) 
{
    struct file *filp = NULL;
    mm_segment_t oldfs;
    int err = 0;

    oldfs = get_fs();
    set_fs(get_ds());
    filp = filp_open(path, flags, rights);
    set_fs(oldfs);
    if (IS_ERR(filp)) {
        err = PTR_ERR(filp);
        return NULL;
    }
    return filp;
}

Close a file (similar to close):

void file_close(struct file *file) 
{
    filp_close(file, NULL);
}

Reading data from a file (similar to pread):

int file_read(struct file *file, unsigned long long offset, unsigned char *data, unsigned int size) 
{
    mm_segment_t oldfs;
    int ret;

    oldfs = get_fs();
    set_fs(get_ds());

    ret = vfs_read(file, data, size, &offset);

    set_fs(oldfs);
    return ret;
}   

Writing data to a file (similar to pwrite):

int file_write(struct file *file, unsigned long long offset, unsigned char *data, unsigned int size) 
{
    mm_segment_t oldfs;
    int ret;

    oldfs = get_fs();
    set_fs(get_ds());

    ret = vfs_write(file, data, size, &offset);

    set_fs(oldfs);
    return ret;
}

Syncing changes a file (similar to fsync):

int file_sync(struct file *file) 
{
    vfs_fsync(file, 0);
    return 0;
}

[Edit] Originally, I proposed using file_fsync, which is gone in newer kernel versions. Thanks to the poor guy suggesting the change, but whose change was rejected. The edit was rejected before I could review it.

Use os.path.abspath('')

You might want to give a look at this simple Javascript method to be invoked when clicking on a link to make a panel/div expande or collapse.

<script language="javascript"> 
function toggle(elementId) {
    var ele = document.getElementById(elementId);
    if(ele.style.display == "block") {
            ele.style.display = "none";
    }
    else {
        ele.style.display = "block";
    }
} 
</script>

You can pass the div ID and it will toggle between display 'none' or 'block'.

Original source on snip2code - How to collapse a div in html

IMHO returning a null is a bad solution because now you have the problem of sending and interpreting it at the (likely) front end client. I had the same error and I solved it by simply returning a List<FooObject>. I used JDBCTemplate.query().

At the front end (Angular web client), I simply examine the list and if it is empty (of zero length), treat it as no records found.

It is possible in 12.1.

Find idea.properties in the BIN folder inside of wherever your IDE is installed, e.g. C:\Program Files (x86)\JetBrains\IntelliJ\bin

Add a new line to the end of that file:

auto.show.quick.doc=true

Start IDEA and just hover your mouse over something:

#include<algorithm>
#include<vector>
#include<iostream>
using namespace std;
int main()
{
    vector<int>v1;
    for(int i=0; i<5; i++)
        v1.push_back(i*2);
    for(int i=0; i<v1.size(); i++)
        cout<<v1[i];    //02468
    reverse(v1.begin(),v1.end());
    
    for(int i=0; i<v1.size(); i++)
        cout<<v1[i];   //86420
}

Or you can use one SQL-command instead of create and call stored procedure

INSERT INTO [order_cart](orId,caId)
OUTPUT inserted.*
SELECT
   (SELECT MAX(orId) FROM [order]) as orId,
   (SELECT MAX(caId) FROM [cart]) as caId;

While it may or may not work in your situation, I have found it useful to generate a public / private key using Putty's Pageant.

If you are also working with bitbucket (.org) it should give you the ability to provide a public key to your user account and then commands that reach out to the repository will be secured automatically.

If Pageant doesn't start up for you upon a reboot, you can add a shortcut to Pageant to your Windows "Start menu" and the shortcut may need to have a 'properties' populated with the location of your private (.ppk) file.

With this in place Mercurial and your local repositories will need to be set up to push/pull using the SSH format.

Here are some detailed instructions on Atlassian's site for Windows OR Mac/Linux.

You don't have to take my word for it and there are no doubt other ways to do it. Perhaps these steps described here are more for you:

1. Start PuttyGen from Start -> PuTTY-> PuttyGen
2. Generate a new key and save it as a .ppk file without a passphrase
3. Use Putty to login to the server you want to connect to
4. Append the Public Key text from PuttyGen to the text of ~/.ssh/authorized_keys
5. Create a shortcut to your .ppk file from Start -> Putty to Start -> Startup
6. Select the .ppk shortcut from the Startup menu (this will happen automatically at every startup)
7. See the Pageant icon in the system tray? Right-click it and select “New session”
8. Enter username@hostname in the “Host name” field
9. You will now log in automatically.

I error occor. When you are trying to access a file which is not in the director. Carefully check path in the view

 $this->load->view('path');

default root path of view function is application/view .

I had the same error. I was trying to access files like this

 $this->load->view('pages/view/file.php');

Actually I have the class Pages and function. I built the function with one argument to call the any files from the director application/view/pages . I was put the wrong path. The above path pages/view/files can be used when you are trying to access the controller. Not for the view. MVC gave a lot confusion. I had this problem. I just solve it. Thanks.

Laravel optional() Helper is comes to solve this problem. Try this helper so that if any key have not value then it not return error

foreach ($sample_arr as $key => $value) {        
      $sample_data[] = array(       
        'client_phone' =>optional($users)->phone        
      );
    }
 print_r($sample_data);

Actually I think that more general approach to loop through dictionary is to use iteritems():

# get tuples of term, courses
for term, term_courses in courses.iteritems():
    # get tuples of course number, info
    for course, info in term_courses.iteritems():
        # loop through info
        for k, v in info.iteritems():
            print k, v

output:

assistant Peter C.
prereq cs101
...
name Programming a Robotic Car
teacher Sebastian

Or, as Matthias mentioned in comments, if you don't need keys, you can just use itervalues():

for term_courses in courses.itervalues():
    for info in term_courses.itervalues():
        for k, v in info.iteritems():
            print k, v

I'm no c++ guy, but you should be able to get the gist from this.

public static string Reverse(string s) {
    if (s == null || s.Length < 2) {
        return s;
    }

    int length = s.Length;
    int loop = (length >> 1) + 1;
    int j;
    char[] chars = new char[length];
    for (int i = 0; i < loop; i++) {
        j = length - i - 1;
        chars[i] = s[j];
        chars[j] = s[i];
    }
    return new string(chars);
}

Introduction

You can get everything through ExternalContext. In JSF 1.x, you can get the raw HttpServletResponse object by ExternalContext#getResponse(). In JSF 2.x, you can use the bunch of new delegate methods like ExternalContext#getResponseOutputStream() without the need to grab the HttpServletResponse from under the JSF hoods.

On the response, you should set the Content-Type header so that the client knows which application to associate with the provided file. And, you should set the Content-Length header so that the client can calculate the download progress, otherwise it will be unknown. And, you should set the Content-Disposition header to attachment if you want a Save As dialog, otherwise the client will attempt to display it inline. Finally just write the file content to the response output stream.

Most important part is to call FacesContext#responseComplete() to inform JSF that it should not perform navigation and rendering after you've written the file to the response, otherwise the end of the response will be polluted with the HTML content of the page, or in older JSF versions, you will get an IllegalStateException with a message like getoutputstream() has already been called for this response when the JSF implementation calls getWriter() to render HTML.

Turn off ajax / don't use remote command!

You only need to make sure that the action method is not called by an ajax request, but that it is called by a normal request as you fire with <h:commandLink> and <h:commandButton>. Ajax requests and remote commands are handled by JavaScript which in turn has, due to security reasons, no facilities to force a Save As dialogue with the content of the ajax response.

In case you're using e.g. PrimeFaces <p:commandXxx>, then you need to make sure that you explicitly turn off ajax via ajax="false" attribute. In case you're using ICEfaces, then you need to nest a <f:ajax disabled="true" /> in the command component.

Generic JSF 2.x example

public void download() throws IOException {
    FacesContext fc = FacesContext.getCurrentInstance();
    ExternalContext ec = fc.getExternalContext();

    ec.responseReset(); // Some JSF component library or some Filter might have set some headers in the buffer beforehand. We want to get rid of them, else it may collide.
    ec.setResponseContentType(contentType); // Check http://www.iana.org/assignments/media-types for all types. Use if necessary ExternalContext#getMimeType() for auto-detection based on filename.
    ec.setResponseContentLength(contentLength); // Set it with the file size. This header is optional. It will work if it's omitted, but the download progress will be unknown.
    ec.setResponseHeader("Content-Disposition", "attachment; filename=\"" + fileName + "\""); // The Save As popup magic is done here. You can give it any file name you want, this only won't work in MSIE, it will use current request URL as file name instead.

    OutputStream output = ec.getResponseOutputStream();
    // Now you can write the InputStream of the file to the above OutputStream the usual way.
    // ...

    fc.responseComplete(); // Important! Otherwise JSF will attempt to render the response which obviously will fail since it's already written with a file and closed.
}

Generic JSF 1.x example

public void download() throws IOException {
    FacesContext fc = FacesContext.getCurrentInstance();
    HttpServletResponse response = (HttpServletResponse) fc.getExternalContext().getResponse();

    response.reset(); // Some JSF component library or some Filter might have set some headers in the buffer beforehand. We want to get rid of them, else it may collide.
    response.setContentType(contentType); // Check http://www.iana.org/assignments/media-types for all types. Use if necessary ServletContext#getMimeType() for auto-detection based on filename.
    response.setContentLength(contentLength); // Set it with the file size. This header is optional. It will work if it's omitted, but the download progress will be unknown.
    response.setHeader("Content-Disposition", "attachment; filename=\"" + fileName + "\""); // The Save As popup magic is done here. You can give it any file name you want, this only won't work in MSIE, it will use current request URL as file name instead.

    OutputStream output = response.getOutputStream();
    // Now you can write the InputStream of the file to the above OutputStream the usual way.
    // ...

    fc.responseComplete(); // Important! Otherwise JSF will attempt to render the response which obviously will fail since it's already written with a file and closed.
}

Common static file example

In case you need to stream a static file from the local disk file system, substitute the code as below:

File file = new File("/path/to/file.ext");
String fileName = file.getName();
String contentType = ec.getMimeType(fileName); // JSF 1.x: ((ServletContext) ec.getContext()).getMimeType(fileName);
int contentLength = (int) file.length();

// ...

Files.copy(file.toPath(), output);

Common dynamic file example

In case you need to stream a dynamically generated file, such as PDF or XLS, then simply provide output there where the API being used expects an OutputStream.

E.g. iText PDF:

String fileName = "dynamic.pdf";
String contentType = "application/pdf";

// ...

Document document = new Document();
PdfWriter writer = PdfWriter.getInstance(document, output);
document.open();
// Build PDF content here.
document.close();

E.g. Apache POI HSSF:

String fileName = "dynamic.xls";
String contentType = "application/vnd.ms-excel";

// ...

HSSFWorkbook workbook = new HSSFWorkbook();
// Build XLS content here.
workbook.write(output);
workbook.close();

Note that you cannot set the content length here. So you need to remove the line to set response content length. This is technically no problem, the only disadvantage is that the enduser will be presented an unknown download progress. In case this is important, then you really need to write to a local (temporary) file first and then provide it as shown in previous chapter.

Utility method

If you're using JSF utility library OmniFaces, then you can use one of the three convenient Faces#sendFile() methods taking either a File, or an InputStream, or a byte[], and specifying whether the file should be downloaded as an attachment (true) or inline (false).

public void download() throws IOException {
    Faces.sendFile(file, true);
}

Yes, this code is complete as-is. You don't need to invoke responseComplete() and so on yourself. This method also properly deals with IE-specific headers and UTF-8 filenames. You can find source code here.

Try this:

var date = new Date();
console.log(date instanceof Date && !isNaN(date.valueOf()));

This should return true.

UPDATED: Added isNaN check to handle the case commented by Julian H. Lam

Declaration says "this thing exists somewhere":

int foo();       // function
extern int bar;  // variable
struct T
{
   static int baz;  // static member variable
};

Definition says "this thing exists here; make memory for it":

int foo() {}     // function
int bar;         // variable
int T::baz;      // static member variable

Initialisation is optional at the point of definition for objects, and says "here is the initial value for this thing":

int bar = 0;     // variable
int T::baz = 42; // static member variable

Sometimes it's possible at the point of declaration instead:

struct T
{
   static int baz = 42;
};

…but that's getting into more complex features.

Try {{model?.person.name}} this should wait for model to not be undefined and then render.

Angular 2 refers to this ?. syntax as the Elvis operator. Reference to it in the documentation is hard to find so here is a copy of it in case they change/move it:

The Elvis Operator ( ?. ) and null property paths

The Angular “Elvis” operator ( ?. ) is a fluent and convenient way to guard against null and undefined values in property paths. Here it is, protecting against a view render failure if the currentHero is null.

The current hero's name is {{currentHero?.firstName}}

Let’s elaborate on the problem and this particular solution.

What happens when the following data bound title property is null?

The title is {{ title }}

The view still renders but the displayed value is blank; we see only "The title is" with nothing after it. That is reasonable behavior. At least the app doesn't crash.

Suppose the template expression involves a property path as in this next example where we’re displaying the firstName of a null hero.

The null hero's name is {{nullHero.firstName}}

JavaScript throws a null reference error and so does Angular:

TypeError: Cannot read property 'firstName' of null in [null]

Worse, the entire view disappears.

We could claim that this is reasonable behavior if we believed that the hero property must never be null. If it must never be null and yet it is null, we've made a programming error that should be caught and fixed. Throwing an exception is the right thing to do.

On the other hand, null values in the property path may be OK from time to time, especially when we know the data will arrive eventually.

While we wait for data, the view should render without complaint and the null property path should display as blank just as the title property does.

Unfortunately, our app crashes when the currentHero is null.

We could code around that problem with NgIf

<!--No hero, div not displayed, no error --> <div *ngIf="nullHero">The null hero's name is {{nullHero.firstName}}</div>

Or we could try to chain parts of the property path with &&, knowing that the expression bails out when it encounters the first null.

The null hero's name is {{nullHero && nullHero.firstName}}

These approaches have merit but they can be cumbersome, especially if the property path is long. Imagine guarding against a null somewhere in a long property path such as a.b.c.d.

The Angular “Elvis” operator ( ?. ) is a more fluent and convenient way to guard against nulls in property paths. The expression bails out when it hits the first null value. The display is blank but the app keeps rolling and there are no errors.

<!-- No hero, no problem! --> The null hero's name is {{nullHero?.firstName}}

It works perfectly with long property paths too:

a?.b?.c?.d

A simple approach would be to use the /MIR option, to mirror the two directories. Basically it will copy only the new files to destination. In next comand replace source and destination with the paths to your folders, the script will search for any file with any extensions.

robocopy <source directory> <destination directory> *.* /MIR

You need to take a copy of the list and iterate over it first, or the iteration will fail with what may be unexpected results.

For example (depends on what type of list):

for tup in somelist[:]:
    etc....

An example:

>>> somelist = range(10)
>>> for x in somelist:
...     somelist.remove(x)
>>> somelist
[1, 3, 5, 7, 9]

>>> somelist = range(10)
>>> for x in somelist[:]:
...     somelist.remove(x)
>>> somelist
[]

The MyKey class must implement Serializable if you are using @IdClass

That's shorter.

function IsArrows (e) { return (e.keyCode >= 37 && e.keyCode <= 40); }

I've tried Greg's answer with zero success, I must have done something wrong since my database had no data after all the steps: I was using MariaDB's latest image, just in case.

Then I decided to read the entrypoint for the official MariaDB image, and used that to generate a simple docker-compose file:

database:
  image: mariadb
  ports:
     - 3306:3306
  expose:
     - 3306
  volumes:
     - ./docker/mariadb/data:/var/lib/mysql:rw
     - ./database/schema.sql:/docker-entrypoint-initdb.d/schema.sql:ro
  environment:
     MYSQL_ALLOW_EMPTY_PASSWORD: "yes"

Now I'm able to persist my data AND generate a database with my own schema!

//Delete all records of table
db.execSQL("DELETE FROM " + TABLE_NAME);

//Reset the auto_increment primary key if you needed
db.execSQL("UPDATE SQLITE_SEQUENCE SET SEQ=0 WHERE NAME=" + TABLE_NAME);

//For go back free space by shrinking sqlite file
db.execSQL("VACUUM");

You can still use <hr> as a horizontal line, and you probably should. In HTML5 it defines a thematic break in content, without making any promises about how it is displayed. The attributes that aren't supported in the HTML5 spec are all related to the tag's appearance. The appearance should be set in CSS, not in the HTML itself.

So use the <hr> tag without attributes, then style it in CSS to appear the way you want.

PHP 7.0: Using the explode function and create a list of all the results.

list($subdomain,$host) = explode('.', $_SERVER["SERVER_NAME"]);

Example: sub.domain.com

echo $subdomain; 

Result: sub

echo $host;

Result: domain

The easiest way is to use eval as in:

 >>> eval("2   +    2")
 4

Pay attention to the fact I included spaces in the string. eval will execute a string as if it was a Python code, so if you want the input to be in a syntax other than Python, you should parse the string yourself and calculate, for example eval("2x7") would not give you 14 because Python uses * for multiplication operator rather than x.

A little more robust version of what you're attempting:

str = str.replaceAll("(\r\n|\n\r|\r|\n)", "<br />");

Regexes can also limit the number of characters.

r = re.compile("^[a-z]{1,15}$")

gives you a regex that only matches if the input is entirely lowercase ASCII letters and 1 to 15 characters long.

static variable stored in data segment or code segment as mentioned before.
You can be sure that it will not be allocated on stack or heap.
There is no risk for collision since static keyword define the scope of the variable to be a file or function, in case of collision there is a compiler/linker to warn you about.
A nice example

I gave KFD9's answer an update.

I adapted their version to support the include-specification and not make use of indexkey_property which is deprecated

This gives you a create and a drop statement for indexes and constraints.

with indexes as (
    SELECT
      schema_name(schema_id) as SchemaName, OBJECT_NAME(si.object_id) as TableName, si.name as IndexName,
      (CASE is_primary_key WHEN 1 THEN 'PK' ELSE '' END) as PK,
      (CASE is_unique WHEN 1 THEN '1' ELSE '0' END)+' '+
      (CASE si.type WHEN 1 THEN 'C' WHEN 3 THEN 'X' ELSE 'B' END)+' ' as 'Type',  -- B=basic, C=Clustered, X=XML
      (select string_agg(CAST('[' + c.name + ']' + case when is_descending_key = 1 then ' DESC' else '' end AS NVARCHAR(MAX)), ',') within group (order by index_column_id) 
         from sys.index_columns ic JOIN sys.columns c on ic.column_id = c.column_id and ic.object_id = c.object_id where ic.index_id = si.index_id and ic.object_id = si.object_id and ic.is_included_column = 0) Cols,
      (select string_agg(CAST('[' + c.name + ']' + case when is_descending_key = 1 then ' DESC' else '' end AS NVARCHAR(MAX)), ',') within group (order by index_column_id) 
         from sys.index_columns ic JOIN sys.columns c on ic.column_id = c.column_id and ic.object_id = c.object_id where ic.index_id = si.index_id and ic.object_id = si.object_id and ic.is_included_column = 1) IncludedCols,
      (select count(*) from sys.index_columns ic where ic.index_id = si.index_id and ic.object_id = si.object_id) IndexColsCount
    FROM sys.indexes as si
    LEFT JOIN sys.objects as so on so.object_id=si.object_id
    WHERE index_id>0 -- omit the default heap
      and OBJECTPROPERTY(si.object_id,'IsMsShipped')=0 -- omit system tables
      and not (schema_name(schema_id)='dbo' and OBJECT_NAME(si.object_id)='sysdiagrams') -- omit sysdiagrams
)
SELECT SchemaName, TableName, IndexName,
  (CASE pk
    WHEN 'PK' THEN 'ALTER '+
     'TABLE ['+SchemaName+'].['+TableName+'] ADD CONSTRAINT ['+IndexName+'] PRIMARY KEY'+
     (CASE substring(Type,3,1) WHEN 'C' THEN ' CLUSTERED' ELSE '' END)
    ELSE 'CREATE '+
     (CASE substring(Type,1,1) WHEN '1' THEN 'UNIQUE ' ELSE '' END)+
     (CASE substring(Type,3,1) WHEN 'C' THEN 'CLUSTERED ' ELSE '' END)+
     'INDEX ['+IndexName+'] ON ['+SchemaName+'].['+TableName+']'
    END)+
  ' ('+Cols+')'+
  isnull(' include ('+IncludedCols+')', '')+
  '' as CreateIndex,
    CASE pk
    WHEN 'PK' THEN 'ALTER '+
     'TABLE ['+SchemaName+'].['+TableName+'] DROP CONSTRAINT ['+IndexName+'] '
    ELSE 'DROP INDEX ['+IndexName+'] ON ['+SchemaName+'].['+TableName + ']'
    END AS DropIndex,
    IndexColsCount
FROM indexes
ORDER BY SchemaName,TableName,IndexName

See an example here: http://www.cplusplus.com/reference/stl/vector/insert/ eg.:

...
vector::iterator iterator1;

  iterator1= vec1.begin();
  vec1.insert ( iterator1+i , vec2[i] );

// This means that at position "i" from the beginning it will insert the value from vec2 from position i

Your first approach was replacing the values from vec1[i] with the values from vec2[i]

Probably a maximized Form helps, or you can do this manually upon form load:

Code Block

this.Location = new Point(0, 0);

this.Size = Screen.PrimaryScreen.WorkingArea.Size;

And then, play with anchoring, so the child controls inside your form automatically fit in your form's new size.

Hope this helps,

sed can operate on an address:

$ sed -i '1s/^/<added text> /' file

What is this magical 1s you see on every answer here? Line addressing!.

Want to add <added text> on the first 10 lines?

$ sed -i '1,10s/^/<added text> /' file

Or you can use Command Grouping:

$ { echo -n '<added text> '; cat file; } >file.new
$ mv file{.new,}

The answer is right in the MYSQL manual itself.

"DELETE FROM `table_name` WHERE `time_col` < ADDDATE(NOW(), INTERVAL -1 HOUR)"

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.

Ordering... a list has an order, a set does not.

To get rid of error:

Type '"text"' is not assignable to type '"json"'.

Use

responseType: 'text' as 'json'

import { HttpClient, HttpHeaders } from '@angular/common/http';
.....
 return this.http
        .post<string>(
            this.baseUrl + '/Tickets/getTicket',
            JSON.stringify(value),
        { headers, responseType: 'text' as 'json' }
        )
        .map(res => {
            return res;
        })
        .catch(this.handleError);

try to use this one.

$(document).ready(function(){
$.ajax({
    url: "yourPageWhereToLoadData.php",
    success: function(data){
        $("#dialog").html(data);
    }   
});

$("#dialog").dialog(
       {
        bgiframe: true,
        autoOpen: false,
        height: 100,
        modal: true
       }
);
});

Here's a function that'll do it:

def totuple(a):
    try:
        return tuple(totuple(i) for i in a)
    except TypeError:
        return a

And an example:

>>> array = numpy.array(((2,2),(2,-2)))
>>> totuple(array)
((2, 2), (2, -2))

you could also store your data in an service with an setter and get it over a getter

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

@Injectable()
export class StorageService {

    public scope: Array<any> | boolean = false;

    constructor() {
    }

    public getScope(): Array<any> | boolean {
        return this.scope;
    }

    public setScope(scope: any): void {
        this.scope = scope;
    }
}

Issue: 'id1' is missing in props validation, eslintreact/prop-types

<div id={props.id1} >
    ...
</div>

Below solution worked, in a function component:

let { id1 } = props;

<div id={id1} >
    ...
</div>

Hope that helps.

That's what I got:

    Scanner scanner = new Scanner(System.in);
    System.out.println("Please enter a nickname!");
    while (!scanner.hasNext("[a-zA-Z]{3,8}+")) {
        System.out.println("Nickname should contain only Alphabetic letters! At least 3 and max 8 letters");
        scanner.next();
    }
    String nickname = scanner.next();
    System.out.println("Thank you! Got " + nickname);

Read about regex Pattern here: https://docs.oracle.com/javase/7/docs/api/java/util/regex/Pattern.html

v.Dt is likely not a Date() object.

See http://jsfiddle.net/southerd/xG2t8/

but in your controller:

scope.v.Dt = Date.parse(scope.v.Dt);

RecyclerView's Adapter doesn't come with many methods otherwise available in ListView's adapter. But your swap can be implemented quite simply as:

class MyRecyclerAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
   List<Data> data;
   ...

    public void swap(ArrayList<Data> datas)
    {
        data.clear();
        data.addAll(datas);
        notifyDataSetChanged();     
    }
}

Also there is a difference between

list.clear();
list.add(data);

and

list = newList;

The first is reusing the same list object. The other is dereferencing and referencing the list. The old list object which can no longer be reached will be garbage collected but not without first piling up heap memory. This would be the same as initializing new adapter everytime you want to swap data.

in the spotlight, search for Activity Monitor. You can force fully remove any application from here.

I think you should understand what delayed expansion is. The existing answers don't explain it (sufficiently) IMHO.

Typing SET /? explains the thing reasonably well:

Delayed environment variable expansion is useful for getting around the limitations of the current expansion which happens when a line of text is read, not when it is executed. The following example demonstrates the problem with immediate variable expansion:

set VAR=before
if "%VAR%" == "before" (
    set VAR=after
    if "%VAR%" == "after" @echo If you see this, it worked
)

would never display the message, since the %VAR% in BOTH IF statements is substituted when the first IF statement is read, since it logically includes the body of the IF, which is a compound statement. So the IF inside the compound statement is really comparing "before" with "after" which will never be equal. Similarly, the following example will not work as expected:

set LIST=
for %i in (*) do set LIST=%LIST% %i
echo %LIST%

in that it will NOT build up a list of files in the current directory, but instead will just set the LIST variable to the last file found. Again, this is because the %LIST% is expanded just once when the FOR statement is read, and at that time the LIST variable is empty. So the actual FOR loop we are executing is:

for %i in (*) do set LIST= %i

which just keeps setting LIST to the last file found.

Delayed environment variable expansion allows you to use a different character (the exclamation mark) to expand environment variables at execution time. If delayed variable expansion is enabled, the above examples could be written as follows to work as intended:

set VAR=before
if "%VAR%" == "before" (
    set VAR=after
    if "!VAR!" == "after" @echo If you see this, it worked
)

set LIST=
for %i in (*) do set LIST=!LIST! %i
echo %LIST%

Another example is this batch file:

@echo off
setlocal enabledelayedexpansion
set b=z1
for %%a in (x1 y1) do (
 set b=%%a
 echo !b:1=2!
)

This prints x2 and y2: every 1 gets replaced by a 2.

Without setlocal enabledelayedexpansion, exclamation marks are just that, so it will echo !b:1=2! twice.

Because normal environment variables are expanded when a (block) statement is read, expanding %b:1=2% uses the value b has before the loop: z2 (but y2 when not set).

If you have

a=[[1,1],[2,1],[3,1]]
b=[[1,2],[2,2],[3,2]]

Then

a[1][1]

Will work fine. It points to the second column, second row just like you wanted.

I'm not sure what you did wrong.

To multiply the cells in the third column you can just do

c = [a[2][i] * b[2][i] for i in range(len(a[2]))] 

Which will work for any number of rows.

Edit: The first number is the column, the second number is the row, with your current layout. They are both numbered from zero. If you want to switch the order you can do

a = zip(*a)

or you can create it that way:

a=[[1, 2, 3], [1, 1, 1]]

You can easily crop a Mat using opencv funtions.

setMouseCallback("Original",mouse_call);

The mouse_callis given below:

 void mouse_call(int event,int x,int y,int,void*)
    {
        if(event==EVENT_LBUTTONDOWN)
        {
            leftDown=true;
            cor1.x=x;
            cor1.y=y;
           cout <<"Corner 1: "<<cor1<<endl;

        }
        if(event==EVENT_LBUTTONUP)
        {
            if(abs(x-cor1.x)>20&&abs(y-cor1.y)>20) //checking whether the region is too small
            {
                leftup=true;
                cor2.x=x;
                cor2.y=y;
                cout<<"Corner 2: "<<cor2<<endl;
            }
            else
            {
                cout<<"Select a region more than 20 pixels"<<endl;
            }
        }

        if(leftDown==true&&leftup==false) //when the left button is down
        {
            Point pt;
            pt.x=x;
            pt.y=y;
            Mat temp_img=img.clone();
            rectangle(temp_img,cor1,pt,Scalar(0,0,255)); //drawing a rectangle continuously
            imshow("Original",temp_img);

        }
        if(leftDown==true&&leftup==true) //when the selection is done
        {

            box.width=abs(cor1.x-cor2.x);
            box.height=abs(cor1.y-cor2.y);
            box.x=min(cor1.x,cor2.x);
            box.y=min(cor1.y,cor2.y);
            Mat crop(img,box);   //Selecting a ROI(region of interest) from the original pic
            namedWindow("Cropped Image");
            imshow("Cropped Image",crop); //showing the cropped image
            leftDown=false;
            leftup=false;

        }
    }

For details you can visit the link Cropping the Image using Mouse

For readability, I prefer this:

if (inputString.length() > maxLength) {
    inputString = inputString.substring(0, maxLength);
}

over the accepted answer.

int maxLength = (inputString.length() < MAX_CHAR)?inputString.length():MAX_CHAR;
inputString = inputString.substring(0, maxLength);

actually, adding the

<archive>
   <manifest>
    <addClasspath>true</addClasspath>
    <packageName>com.some.pkg</packageName>                     
    <mainClass>com.MainClass</mainClass>
  </manifest>
</archive>

declaration to maven-jar-plugin does not add the main class entry to the manifest file for me. I had to add it to the maven-assembly-plugin in order to get that in the manifest

With:

FILES = $(shell ls)

indented underneath all like that, it's a build command. So this expands $(shell ls), then tries to run the command FILES ....

If FILES is supposed to be a make variable, these variables need to be assigned outside the recipe portion, e.g.:

FILES = $(shell ls)
all:
        echo $(FILES)

Of course, that means that FILES will be set to "output from ls" before running any of the commands that create the .tgz files. (Though as Kaz notes the variable is re-expanded each time, so eventually it will include the .tgz files; some make variants have FILES := ... to avoid this, for efficiency and/or correctness.¹)

If FILES is supposed to be a shell variable, you can set it but you need to do it in shell-ese, with no spaces, and quoted:

all:
        FILES="$(shell ls)"

However, each line is run by a separate shell, so this variable will not survive to the next line, so you must then use it immediately:

        FILES="$(shell ls)"; echo $$FILES

This is all a bit silly since the shell will expand * (and other shell glob expressions) for you in the first place, so you can just:

        echo *

as your shell command.

Finally, as a general rule (not really applicable to this example): as esperanto notes in comments, using the output from ls is not completely reliable (some details depend on file names and sometimes even the version of ls; some versions of ls attempt to sanitize output in some cases). Thus, as l0b0 and idelic note, if you're using GNU make you can use $(wildcard) and $(subst ...) to accomplish everything inside make itself (avoiding any "weird characters in file name" issues). (In sh scripts, including the recipe portion of makefiles, another method is to use find ... -print0 | xargs -0 to avoid tripping over blanks, newlines, control characters, and so on.)

¹The GNU Make documentation notes further that POSIX make added ::= assignment in 2012. I have not found a quick reference link to a POSIX document for this, nor do I know off-hand which make variants support ::= assignment, although GNU make does today, with the same meaning as :=, i.e., do the assignment right now with expansion.

Note that VAR := $(shell command args...) can also be spelled VAR != command args... in several make variants, including all modern GNU and BSD variants as far as I know. These other variants do not have $(shell) so using VAR != command args... is superior in both being shorter and working in more variants.

To make this work work with all browsers including Chrome you need to make the callback function of sort() return -1,0 or 1.

see http://inderpreetsingh.com/2010/12/01/chromes-javascript-sort-array-function-is-different-yet-proper/

function sortUL(selector) {
    $(selector).children("li").sort(function(a, b) {
        var upA = $(a).text().toUpperCase();
        var upB = $(b).text().toUpperCase();
        return (upA < upB) ? -1 : (upA > upB) ? 1 : 0;
    }).appendTo(selector);
}
sortUL("ul.mylist");

Reading quickly through the source it seems that you're not far off. The following link should help (I did something similar but for FTP). For a file send from server to client, you start off with a file instance and an array of bytes. You then read the File into the byte array and write the byte array to the OutputStream which corresponds with the InputStream on the client's side.

http://www.rgagnon.com/javadetails/java-0542.html

Edit: Here's a working ultra-minimalistic file sender and receiver. Make sure you understand what the code is doing on both sides.

package filesendtest;

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

class TCPServer {

    private final static String fileToSend = "C:\\test1.pdf";

    public static void main(String args[]) {

        while (true) {
            ServerSocket welcomeSocket = null;
            Socket connectionSocket = null;
            BufferedOutputStream outToClient = null;

            try {
                welcomeSocket = new ServerSocket(3248);
                connectionSocket = welcomeSocket.accept();
                outToClient = new BufferedOutputStream(connectionSocket.getOutputStream());
            } catch (IOException ex) {
                // Do exception handling
            }

            if (outToClient != null) {
                File myFile = new File( fileToSend );
                byte[] mybytearray = new byte[(int) myFile.length()];

                FileInputStream fis = null;

                try {
                    fis = new FileInputStream(myFile);
                } catch (FileNotFoundException ex) {
                    // Do exception handling
                }
                BufferedInputStream bis = new BufferedInputStream(fis);

                try {
                    bis.read(mybytearray, 0, mybytearray.length);
                    outToClient.write(mybytearray, 0, mybytearray.length);
                    outToClient.flush();
                    outToClient.close();
                    connectionSocket.close();

                    // File sent, exit the main method
                    return;
                } catch (IOException ex) {
                    // Do exception handling
                }
            }
        }
    }
}

package filesendtest;

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

class TCPClient {

    private final static String serverIP = "127.0.0.1";
    private final static int serverPort = 3248;
    private final static String fileOutput = "C:\\testout.pdf";

    public static void main(String args[]) {
        byte[] aByte = new byte[1];
        int bytesRead;

        Socket clientSocket = null;
        InputStream is = null;

        try {
            clientSocket = new Socket( serverIP , serverPort );
            is = clientSocket.getInputStream();
        } catch (IOException ex) {
            // Do exception handling
        }

        ByteArrayOutputStream baos = new ByteArrayOutputStream();

        if (is != null) {

            FileOutputStream fos = null;
            BufferedOutputStream bos = null;
            try {
                fos = new FileOutputStream( fileOutput );
                bos = new BufferedOutputStream(fos);
                bytesRead = is.read(aByte, 0, aByte.length);

                do {
                        baos.write(aByte);
                        bytesRead = is.read(aByte);
                } while (bytesRead != -1);

                bos.write(baos.toByteArray());
                bos.flush();
                bos.close();
                clientSocket.close();
            } catch (IOException ex) {
                // Do exception handling
            }
        }
    }
}

Related

Byte array of unknown length in java

Edit: The following could be used to fingerprint small files before and after transfer (use SHA if you feel it's necessary):

public static String md5String(File file) {
    try {
        InputStream fin = new FileInputStream(file);
        java.security.MessageDigest md5er = MessageDigest.getInstance("MD5");
        byte[] buffer = new byte[1024];
        int read;
        do {
            read = fin.read(buffer);
            if (read > 0) {
                md5er.update(buffer, 0, read);
            }
        } while (read != -1);
        fin.close();
        byte[] digest = md5er.digest();
        if (digest == null) {
            return null;
        }
        String strDigest = "0x";
        for (int i = 0; i < digest.length; i++) {
            strDigest += Integer.toString((digest[i] & 0xff)
                    + 0x100, 16).substring(1).toUpperCase();
        }
        return strDigest;
    } catch (Exception e) {
        return null;
    }
}

• To convert the epoch(Unix-Time) to regular time like for the below timestamp

  Ex: 1517577336206

• First convert the value with the following function like below

  =LEFT(A1,10) & "." & RIGHT(A1,3)

• The output will be like below

  Ex: 1517577336.206

• Now Add the formula like below

  =(((B1/60)/60)/24)+DATE(1970,1,1)

• Now format the cell like below or required format(Custom format)

  m/d/yyyy h:mm:ss.000

Now example time comes like

2/2/2018 13:15:36.206

The three zeros are for milliseconds

Take a look on your running processes, it seems like your current Tomcat instance did not stop. It's still running and NetBeans tries to start a second Tomcat-instance. Thats the reason for your exception, you just have to stop the first instance, or deploy you code on the current running one

It Works , try out this :

InputStream in_s1 =   TopBrandData.class.getResourceAsStream("/assets/TopBrands.xml");

If you want to select a variable range containing all headers cells:

Dim sht as WorkSheet
Set sht = This Workbook.Sheets("Data")

'Range(Cells(1,1),Cells(1,Columns.Count).End(xlToLeft)).Select '<<< NOT ROBUST

sht.Range(sht.Cells(1,1),sht.Cells(1,Columns.Count).End(xlToLeft)).Select

...as long as there's no other content on that row.

EDIT: updated to stress that when using Range(Cells(...), Cells(...)) it's good practice to qualify both Range and Cells with a worksheet reference.

You can't use IF like that. You can do what you want with AND and OR:

SELECT t.first_name,
       t.last_name,
       t.employid,
       t.status
  FROM employeetable t
 WHERE ((status_flag = STATUS_ACTIVE   AND t.status = 'A')
     OR (status_flag = STATUS_INACTIVE AND t.status = 'T')
     OR (source_flag = SOURCE_FUNCTION AND t.business_unit = 'production')
     OR (source_flag = SOURCE_USER     AND t.business_unit = 'users'))
   AND t.first_name LIKE firstname
   AND t.last_name  LIKE lastname
   AND t.employid   LIKE employeeid;

/*

If your delimiters are slash-based, escape it:

\/*

* means "0 or more of the previous repeatable pattern", which can be a single character, a character class or a group.

I faced difficulties using "window.URL" with Opera Browser as it would result to "undefined". Also, with window.URL, the PDF document never opened in Internet Explorer and Microsoft Edge (it would remain waiting forever). I came up with the following solution that works in IE, Edge, Firefox, Chrome and Opera (have not tested with Safari):

$http.post(postUrl, data, {responseType: 'arraybuffer'})
.success(success).error(failed);

function success(data) {
   openPDF(data.data, "myPDFdoc.pdf");
};

function failed(error) {...};

function openPDF(resData, fileName) {
    var ieEDGE = navigator.userAgent.match(/Edge/g);
    var ie = navigator.userAgent.match(/.NET/g); // IE 11+
    var oldIE = navigator.userAgent.match(/MSIE/g); 

    var blob = new window.Blob([resData], { type: 'application/pdf' });

    if (ie || oldIE || ieEDGE) {
       window.navigator.msSaveBlob(blob, fileName);
    }
    else {
       var reader = new window.FileReader();
       reader.onloadend = function () {
          window.location.href = reader.result;
       };
       reader.readAsDataURL(blob);
    }
}

Let me know if it helped! :)

printf already crops the trailing newline for you:

$ printf '%s' $(wc -l < log.txt)

Detail:

• printf will print your content in place of the %s string place holder.
• If you do not tell it to print a newline (%s\n), it won't.

This worked for me

$("div").css({"left":"2000px"}).animate({"left":"0px"}, "slow");

<!DOCTYPE html>
<html lang="en">
<head>
<title>Change Image on Hover in CSS</title>
<style type="text/css">
    .card {
        width: 130px;
        height: 195px;
        background: url("../images/pic.jpg") no-repeat;
        margin: 50px;
    }
    .card:hover {
        background: url("../images/anotherpic.jpg") no-repeat;
    }
</style>
</head>
<body>
    <div class="card"></div>
</body>
</html>       

The script below lists all the default constraints and the default values for the user tables in the database in which it is being run:

SELECT  
        b.name AS TABLE_NAME,
        d.name AS COLUMN_NAME,
        a.name AS CONSTRAINT_NAME,
        c.text AS DEFAULT_VALUE
FROM sys.sysobjects a INNER JOIN
        (SELECT name, id
         FROM sys.sysobjects 
         WHERE xtype = 'U') b on (a.parent_obj = b.id)
                      INNER JOIN sys.syscomments c ON (a.id = c.id)
                      INNER JOIN sys.syscolumns d ON (d.cdefault = a.id)                                          
 WHERE a.xtype = 'D'        
 ORDER BY b.name, a.name

Tips to prevent issue (bad hash) :

I experienced that NodeJS is hashing the UTF-8 representation of the string. Other languages (like Python, PHP or PERL...) are hashing the byte string.

We can add binary argument to use the byte string.

const crypto = require("crypto");

function sha1(data) {
    return crypto.createHash("sha1").update(data, "binary").digest("hex");
}

sha1("Your text ;)");

You can try with : "\xac", "\xd1", "\xb9", "\xe2", "\xbb", "\x93", etc...

Other languages (Python, PHP, ...):

sha1("\xac") //39527c59247a39d18ad48b9947ea738396a3bc47

Nodejs:

sha1 = crypto.createHash("sha1").update("\xac", "binary").digest("hex") //39527c59247a39d18ad48b9947ea738396a3bc47
//without:
sha1 = crypto.createHash("sha1").update("\xac").digest("hex") //f50eb35d94f1d75480496e54f4b4a472a9148752

In Swift:

tableView.alwaysBounceVertical = false

Edit the code to be as follows:

// Upload file
$moved = move_uploaded_file($_FILES["file"]["tmp_name"], "images/" . "myFile.txt" );

if( $moved ) {
  echo "Successfully uploaded";         
} else {
  echo "Not uploaded because of error #".$_FILES["file"]["error"];
}

It will give you one of the following error code values 1 to 8:

UPLOAD_ERR_INI_SIZE = Value: 1; The uploaded file exceeds the upload_max_filesize directive in php.ini.

UPLOAD_ERR_FORM_SIZE = Value: 2; The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form.

UPLOAD_ERR_PARTIAL = Value: 3; The uploaded file was only partially uploaded.

UPLOAD_ERR_NO_FILE = Value: 4; No file was uploaded.

UPLOAD_ERR_NO_TMP_DIR = Value: 6; Missing a temporary folder. Introduced in PHP 5.0.3.

UPLOAD_ERR_CANT_WRITE = Value: 7; Failed to write file to disk. Introduced in PHP 5.1.0.

UPLOAD_ERR_EXTENSION = Value: 8; A PHP extension stopped the file upload. PHP does not provide a way to ascertain which extension caused the file upload to stop; examining the list of loaded extensions with phpinfo() may help.

You separate the values you want to return by commas:

def get_name():
   # you code
   return first_name, last_name

The commas indicate it's a tuple, so you could wrap your values by parentheses:

return (first_name, last_name)

Then when you call the function you a) save all values to one variable as a tuple, or b) separate your variable names by commas

name = get_name() # this is a tuple
first_name, last_name = get_name()
(first_name, last_name) = get_name() # You can put parentheses, but I find it ugly

1 You can use a drawable

<menu xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:id="@+id/menu_item1"
        android:icon="@drawable/my_item_drawable"
        android:title="@string/menu_item1"
        android:showAsAction="ifRoom" />
</menu>

2 Create a style for the action bar and use a custom background:

<resources>
    <!-- the theme applied to the application or activity -->
    <style name="CustomActivityTheme" parent="@android:style/Theme.Holo">
        <item name="android:actionBarStyle">@style/MyActionBar</item>
        <!-- other activity and action bar styles here -->
    </style>
    <!-- style for the action bar backgrounds -->
    <style name="MyActionBar" parent="@android:style/Widget.Holo.ActionBar">
        <item name="android:background">@drawable/background</item>
        <item name="android:backgroundStacked">@drawable/background</item>
        <item name="android:backgroundSplit">@drawable/split_background</item>
    </style>
</resources>

3 Style again android:actionBarDivider

The android documentation is very usefull for that.

You are probably behind a firewall. Try cloning via https – that has a higher chance of not being blocked:

git clone https://github.com/angular/angular-phonecat.git

I like adding an optional argument to the constructor and calling Object.assign(this, obj), then handling any properties that are objects or arrays of objects themselves:

constructor(obj) {
    if (obj != null) {
        Object.assign(this, obj);
        if (this.ingredients != null) {
            this.ingredients = this.ingredients.map(x => new Ingredient(x));
        }
    }
}

Install the NUnit and NunitTestAdapter package to your test projects from Manage Nunit packages. to perform the same: 1 Right-click on menu Project ? click "Manage NuGet Packages". 2 Go to the "Browse" tab -> Search for the Nunit (or any other package which you want to install) 3 Click on the Package -> A side screen will open "Select the project and click on the install.

Perform your tasks (Add code) If your project is a Console application then a play/run button is displayed on the top click on that any your application will run and If your application is a class library Go to the Test Explorer and click on "Run All" option.

I should like to provide the modern answer.

You shouldn’t really want to convert a date and time from a string at one GMT offset to a string at a different GMT offset and with in a different format. Rather in your program keep an instant (a point in time) as a proper date-time object. Only when you need to give string output, format your object into the desired string.

java.time

Parsing input

    DateTimeFormatter formatter = new DateTimeFormatterBuilder()
            .append(DateTimeFormatter.ISO_LOCAL_DATE)
            .appendLiteral(' ')
            .append(DateTimeFormatter.ISO_LOCAL_TIME)
            .toFormatter();

    String dateTimeString = "2011-10-06 03:35:05";
    Instant instant = LocalDateTime.parse(dateTimeString, formatter)
            .atOffset(ZoneOffset.UTC)
            .toInstant();

For most purposes Instant is a good choice for storing a point in time. If you needed to make it explicit that the date and time came from GMT, use an OffsetDateTime instead.

Converting, formatting and printing output

    ZoneId desiredZone = ZoneId.of("Pacific/Auckland");
    Locale desiredeLocale = Locale.forLanguageTag("en-NZ");
    DateTimeFormatter desiredFormatter = DateTimeFormatter.ofPattern(
            "dd MMM uuuu HH:mm:ss OOOO", desiredeLocale);

    ZonedDateTime desiredDateTime = instant.atZone(desiredZone);
    String result = desiredDateTime.format(desiredFormatter);
    System.out.println(result);

This printed:

06 Oct 2011 16:35:05 GMT+13:00

I specified time zone Pacific/Auckland rather than the offset you mentioned, +13:00. I understood that you wanted New Zealand time, and Pacific/Auckland better tells the reader this. The time zone also takes summer time (DST) into account so you don’t need to take this into account in your own code (for most purposes).

Since Oct is in English, it’s a good idea to give the formatter an explicit locale. GMT might be localized too, but I think that it just prints GMT in all locales.

OOOO in the format patterns string is one way of printing the offset, which may be a better idea than printing the time zone abbreviation you would get from z since time zone abbreviations are often ambiguous. If you want NZDT (for New Zealand Daylight Time), just put z there instead.

Your questions

I will answer your numbered questions in relation to the modern classes in java.time.

Is possible to:

1. Set the time on an object

No, the modern classes are immutable. You need to create an object that has the desired date and time from the outset (this has a number of advantages including thread safety).

2. (Possibly) Set the TimeZone of the initial time stamp

The atZone method that I use in the code returns a ZonedDateTime with the specified time zone. Other date-time classes have a similar method, sometimes called atZoneSameInstant or other names.

3. Format the time stamp with a new TimeZone

With java.time converting to a new time zone and formatting are two distinct steps as shown.

4. Return a string with new time zone time.

Yes, convert to the desired time zone as shown and format as shown.

I found that anytime I try to set the time like this:

calendar.setTime(new Date(1317816735000L));

the local machine's TimeZone is used. Why is that?

It’s not the way you think, which goes nicely to show just a couple of the (many) design problems with the old classes.

• A Date hasn’t got a time zone. Only when you print it, its toString method grabs your local time zone and uses it for rendering the string. This is true for new Date() too. This behaviour has confused many, many programmers over the last 25 years.
• A Calender has got a time zone. It doesn’t change when you do calendar.setTime(new Date(1317816735000L));.

Link

Oracle tutorial: Date Time explaining how to use java.time.

The official way to find out if you have 4.5 installed (and not 4.0) is in the registry keys :

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full

Relesae DWORD needs to be bigger than 378675 Here is the Microsoft doc for it

all the other answers of checking the minor version after 4.0.30319.xxxxx seem correct though (msbuild.exe -version , or properties of clr.dll), i just needed something documented (not a blog)

Another option suggested in this blog post is setting the style of the image as style="display: block;"

you can create a arraylist, and use Collection.addAll() to convert the string array to your arraylist

For Chrome, instead of

response.AppendHeader("X-Frame-Options", "ALLOW-FROM " + host);

you need to add Content-Security-Policy

string selfAuth = System.Web.HttpContext.Current.Request.Url.Authority;
string refAuth = System.Web.HttpContext.Current.Request.UrlReferrer.Authority;
response.AppendHeader("Content-Security-Policy", "default-src 'self' 'unsafe-inline' 'unsafe-eval' data: *.msecnd.net vortex.data.microsoft.com " + selfAuth + " " + refAuth);

to the HTTP-response-headers.
Note that this assumes you checked on the server whether or not refAuth is allowed.
And also, note that you need to do browser-detection in order to avoid adding the allow-from header for Chrome (outputs error on console).

For details, see my answer here.

I wrote a very simple class for exporting to "Excel XML" aka SpreadsheetML. It's not quite as convenient for the end user as XSLX (depending on file extension and Excel version, they may get a warning message), but it's a lot easier to work with than XLS or XLSX.

http://github.com/elidickinson/php-export-data

Try to add this in gradle

    android {
      defaultConfig {
        multiDexEnabled true
        }
   }

You can draw the image on the canvas and let the user draw on top of that.

The drawImage() function will help you with that, see https://developer.mozilla.org/en-US/docs/Web/Guide/HTML/Canvas_tutorial/Using_images

When you get frustrated trying this:

CASE WHEN last_name IS NULL THEN '' ELSE ' '+last_name END

Try this one instead:

CASE LEN(ISNULL(last_Name,''))
WHEN 0 THEN '' 
ELSE ' ' + last_name
END AS newlastName

LEN(ISNULL(last_Name,'')) measures the number of characters in that column, which will be zero whether it's empty, or NULL, therefore WHEN 0 THEN will evaluate to true and return the '' as expected.

I hope this is a helpful alternative.

I have included this test case for sql server 2008 and above:

DECLARE @last_Name varchar(50) = NULL

SELECT 
CASE LEN(ISNULL(@last_Name,''))
WHEN 0 THEN '' 
ELSE 'A ' + @last_name
END AS newlastName

SET @last_Name = 'LastName'

SELECT 
CASE LEN(ISNULL(@last_Name,''))
WHEN 0 THEN '' 
ELSE 'A ' + @last_name
END AS newlastName

Just FYI, the below command worked in seaborn 0.8.1 so I guess the initial answer is still valid.

sns_plot = sns.pairplot(data, hue='species', size=3)
sns_plot.savefig("output.png")

Anyone here looking for Knockout JS integration.

Given the following HTML (Standard Bootstrap dropdown button):

<div class="dropdown">
    <button type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown">
        Select an item               
        <span class="caret"></span>
    </button>
    <ul class="dropdown-menu" role="menu">
        <li>
            <a href="javascript:;" data-bind="click: clickTest">Click 1</a>
        </li>
        <li>
            <a href="javascript:;" data-bind="click: clickTest">Click 2</a>
        </li>
        <li>
            <a href="javascript:;" data-bind="click: clickTest">Click 3</a>
        </li>
    </ul>
</div>

Use the following JS:

var viewModel = function(){
    var self = this;

    self.clickTest = function(){
        alert("I've been clicked!");
    }  
};

For those looking to generate dropdown options based on knockout observable array, the code would look something like:

var viewModel = function(){
    var self = this;

    self.dropdownOptions = ko.observableArray([
        { id: 1, label: "Click 1" },
        { id: 2, label: "Click 2" },
        { id: 3, label: "Click 3" }
    ])

    self.clickTest = function(item){
        alert("Item with id:" + item.id + " was clicked!");
    }  
};

<!-- REST OF DD CODE -->
<ul class="dropdown-menu" role="menu">
    <!-- ko foreach: { data: dropdownOptions, as: 'option' } -->
    <li>
        <a href="javascript:;" data-bind="click: $parent.clickTest, text: option.clickTest"></a>
    </li>
    <!-- /ko -->
</ul>
<!-- REST OF DD CODE -->

Note, that the observable array item is implicitly passed into the click function handler for use in the view model code.

Right click on the table and click on Design,then click on column that you want to set default value.

Then in bottom of page in column properties set Default value or binding to : 'getdate()'

Forgive me if someone already mentioned, but in the days of x86 when memory segmentation was still relevant, you may not get the same results from these two instructions:

LEA AX, DS:[0x1234]

and

LEA AX, CS:[0x1234]

Just a minor addition to Gaafar's answer, it gave me a deprecation warning. Instead of on the server object, like this:

MongoClient.connect(MONGO_URL, {
    server: {
        reconnectTries: Number.MAX_VALUE,
        reconnectInterval: 1000
    }
});

It can go on the top level object. Basically, just take it out of the server object and put it in the options object like this:

MongoClient.connect(MONGO_URL, {
    reconnectTries: Number.MAX_VALUE,
    reconnectInterval: 1000
});

I just ran into this same problem but had a different fix. Essentially I had both SQL Server and SQL Server Express installed on my computer. This wouldn't work when I attempted to restore to SQL Express, but worked correctly when I restored it to SQL Server.

You should be able to access the document in the IFRAME using the following code:

document.getElementById('myframe').contentWindow.document

However, you will not be able to do this if the page in the frame is loaded from a different domain (such as google.com). THis is because of the browser's Same Origin Policy.

Use a seperate column to indicate the join condition

SELECT  t.importid, 
        case 
            when t.importid = g.home 
            then 'home' 
            else 'away' 
        end as join_condition, 
        g.network, 
        g.date_start 
FROM    game g
INNER JOIN team t ON (t.importid = g.home OR t.importid = g.away)
ORDER BY date_start DESC 
LIMIT 7

A bit late for an answer but just updated fiddle with some best practice

jsfiddle

var myApp = angular.module('myApp',[]);
myApp.factory('UserService', function() {
    var userService = {};

    userService.name = "HI Atul";

    userService.ChangeName = function (value) {

       userService.name = value;
    };

    return userService;
});

function MyCtrl($scope, UserService) {
    $scope.name = UserService.name;
    $scope.updatedname="";
    $scope.changeName=function(data){
        $scope.updateServiceName(data);
    }
    $scope.updateServiceName = function(name){
        UserService.ChangeName(name);
        $scope.name = UserService.name;
    }
}

This is what I expected to see when I came to this question:

#!/usr/bin/env python

import pandas as pd


df = pd.DataFrame([(1, 2, 3, 4),
                   (5, 6, 7, 8),
                   (9, 0, 1, 2),
                   (3, 4, 5, 6)],
                  columns=list('abcd'),
                  index=['India', 'France', 'England', 'Germany'])
print(df)

gives

         a  b  c  d
India    1  2  3  4
France   5  6  7  8
England  9  0  1  2
Germany  3  4  5  6

I had this error come up today due to a defect in code that was posting back a tremendous amount of times causing IIS to be flooded with requests. This essentially locked up IIS and so when I tried to debug, it 'timed out' trying to start the debugger. I simply restarted IIS, which took a few minutes, and it solved the issue.

I sure do wish this error was less generic, seems like there are several different ways to produce it.

If your xml is written by java.lang.String you can just using HttpClient in this way

    public void post() throws Exception{
        HttpClient client = new DefaultHttpClient();
        HttpPost post = new HttpPost("http://www.baidu.com");
        String xml = "<xml>xxxx</xml>";
        HttpEntity entity = new ByteArrayEntity(xml.getBytes("UTF-8"));
        post.setEntity(entity);
        HttpResponse response = client.execute(post);
        String result = EntityUtils.toString(response.getEntity());
    }

pay attention to the Exceptions.

BTW, the example is written by the httpclient version 4.x

Toolkit returns pixels based on PPI, as a result, a screenshot is not created for the entire screen when using PPI> 100% in Windows. I propose to do this:

DisplayMode displayMode = GraphicsEnvironment.getLocalGraphicsEnvironment().getScreenDevices()[0].getDisplayMode();
Rectangle screenRectangle = new Rectangle(displayMode.getWidth(), displayMode.getHeight());
BufferedImage screenShot = new Robot().createScreenCapture(screenRectangle);

Say you were opening a file in your current directory. The command would be:

 start %cd%\filename.filetype

I hope I answered your question.

Here is how to use UIVibrancyEffect and UIBlurEffect with UIVisualEffectView

Objective-C:

// Blur effect
UIBlurEffect *blurEffect = [UIBlurEffect effectWithStyle:UIBlurEffectStyleDark];
UIVisualEffectView *blurEffectView = [[UIVisualEffectView alloc] initWithEffect:blurEffect];
[blurEffectView setFrame:self.view.bounds];
[self.view addSubview:blurEffectView];

// Vibrancy effect
UIVibrancyEffect *vibrancyEffect = [UIVibrancyEffect effectForBlurEffect:blurEffect];
UIVisualEffectView *vibrancyEffectView = [[UIVisualEffectView alloc] initWithEffect:vibrancyEffect];
[vibrancyEffectView setFrame:self.view.bounds];

// Label for vibrant text
UILabel *vibrantLabel = [[UILabel alloc] init];
[vibrantLabel setText:@"Vibrant"];
[vibrantLabel setFont:[UIFont systemFontOfSize:72.0f]];
[vibrantLabel sizeToFit];
[vibrantLabel setCenter: self.view.center];

// Add label to the vibrancy view
[[vibrancyEffectView contentView] addSubview:vibrantLabel];

// Add the vibrancy view to the blur view
[[blurEffectView contentView] addSubview:vibrancyEffectView];

Swift 4:

    // Blur Effect
    let blurEffect = UIBlurEffect(style: UIBlurEffectStyle.dark)
    let blurEffectView = UIVisualEffectView(effect: blurEffect)
    blurEffectView.frame = view.bounds
    view.addSubview(blurEffectView)

    // Vibrancy Effect
    let vibrancyEffect = UIVibrancyEffect(blurEffect: blurEffect)
    let vibrancyEffectView = UIVisualEffectView(effect: vibrancyEffect)
    vibrancyEffectView.frame = view.bounds

    // Label for vibrant text
    let vibrantLabel = UILabel()
    vibrantLabel.text = "Vibrant"
    vibrantLabel.font = UIFont.systemFont(ofSize: 72.0)
    vibrantLabel.sizeToFit()
    vibrantLabel.center = view.center

    // Add label to the vibrancy view
    vibrancyEffectView.contentView.addSubview(vibrantLabel)

    // Add the vibrancy view to the blur view
    blurEffectView.contentView.addSubview(vibrancyEffectView)

! pip install --user <package>

The ! tells the notebook to execute the cell as a shell command.

If you are using Ubuntu/Linux:

sudo apt-get install libcurl4-openssl-dev libssl-dev

Below code may help you to achieve session attribution inside java script:

var name = '<%= session.getAttribute("username") %>';

I'd suggest to use .nth(0) rather than .first() if you need to get the first row.

The difference between them is how they handle NaNs, so .nth(0) will return the first row of group no matter what are the values in this row, while .first() will eventually return the first not NaN value in each column.

E.g. if your dataset is :

df = pd.DataFrame({'id' : [1,1,1,2,2,3,3,3,3,4,4],
            'value'  : ["first","second","third", np.NaN,
                        "second","first","second","third",
                        "fourth","first","second"]})

>>> df.groupby('id').nth(0)
    value
id        
1    first
2    NaN
3    first
4    first

And

>>> df.groupby('id').first()
    value
id        
1    first
2    second
3    first
4    first

ArrayList values = ... // your values
Set uniqueValues = new HashSet(values); //now unique

No requires converting the Task to int. Simply Use The Task Result.

int taskResult = AccessTheWebAndDouble().Result;

public async Task<int> AccessTheWebAndDouble()
{
    int task = AccessTheWeb();
    return task;
}

It will return the value if available otherwise it return 0.

Here is my solution for those who use hook; If you are listing items in your grid and want to remove the selected item, you can use this solution.

var list = data.filter(form => form.id !== selectedRowDataId);
setData(list);

Use this syntax for VB.NET 2005/2008 compatibility:

Dim theVar As New List(Of String)(New String() {"one", "two", "three"})

Although the VB.NET 2010 syntax is prettier.

if your config.properties is not in src/main/resource directory and it is in root directory of the project then you need to do somethinglike below :-

Properties prop = new Properties();          
File configFile = new File(myProp.properties);
InputStream stream = new FileInputStream(configFile);
prop.load(stream);

Use this code for IE9 and above:

window.frames["printf"].focus();
window.frames["printf"].print();

For IE8:

window.frames[0].focus();
window.frames[0].print();

strSearch in this case is probably null (not simply empty).

Try using

String.IsNullOrEmpty(strSearch)

if you are just trying to determine if the string doesn't have any contents.

You can not simply ping in Java as it relies on ICMP, which is sadly not supported in Java

http://mindprod.com/jgloss/ping.html

Use sockets instead

Hope it helps

Only In Oracle =>

SELECT DISTINCT and SELECT UNIQUE behave the same way. While DISTINCT is ANSI SQL standard, UNIQUE is an Oracle specific statement.

In other databases (like sql-server in your case) =>

SELECT UNIQUE is invalid syntax. UNIQUE is keyword for adding unique constraint on the column.

SELECT DISTINCT

Example:

redis 127.0.0.1:6379> AUTH PASSWORD
(error) ERR Client sent AUTH, but no password is set
redis 127.0.0.1:6379> CONFIG SET requirepass "mypass"
OK
redis 127.0.0.1:6379> AUTH mypass
Ok

If you really want them to have ALL rights:

use YourDatabase
go
exec sp_addrolemember 'db_owner', 'UserName'
go

The latest Spring + JPA versions solve this problem fundamentally. You can learn more how to use Spring and JPA togather in a separate thread

inside the .ssh folder Create "config" file

Host github.com
User git
Hostname ssh.github.com
PreferredAuthentications publickey
IdentityFile ~/.ssh/id_rsa
Port 443

Host gitlab.com
Hostname altssh.gitlab.com
User git
Port 443
PreferredAuthentications publickey
IdentityFile ~/.ssh/id_rsa

No for the moment.

I doubt it will be possible for the future for ActiveX support will be discontinued in near future (as MS stated).

Look here about HTML Object tag, but not anything will be accepted. You should try.

create-react-app and react-scripts

react-scripts is a set of scripts from the create-react-app starter pack. create-react-app helps you kick off projects without configuring, so you do not have to setup your project by yourself.

react-scripts start sets up the development environment and starts a server, as well as hot module reloading. You can read here to see what everything it does for you.

with create-react-app you have following features out of the box.

• React, JSX, ES6, and Flow syntax support.
• Language extras beyond ES6 like the object spread operator.
• Autoprefixed CSS, so you don’t need -webkit- or other prefixes.
• A fast interactive unit test runner with built-in support for coverage reporting.
• A live development server that warns about common mistakes.
• A build script to bundle JS, CSS, and images for production, with hashes and sourcemaps.
• An offline-first service worker and a web app manifest, meeting all the Progressive Web App criteria.
• Hassle-free updates for the above tools with a single dependency.

npm scripts

npm start is a shortcut for npm run start.

npm run is used to run scripts that you define in the scripts object of your package.json

if there is no start key in the scripts object, it will default to node server.js

Sometimes you want to do more than the react scripts gives you, in this case you can do react-scripts eject. This will transform your project from a "managed" state into a not managed state, where you have full control over dependencies, build scripts and other configurations.

Add the lines in the gradle.properties file

android.useAndroidX=true
android.enableJetifier=true

Refer also https://developer.android.com/jetpack/androidx

I tried to require a development branch from a different repository and not the latest version and I had the same issue and non of the above worked for me :(

after a while I saw in the documentation that in cases of dev branch you need to require with a 'dev-' prefix to the version and the following worked perfectly.

composer require [vendorName]/[packageName]:dev-[gitBranchName]

None of the proposed answers works for surrogate pairs used to encode characters outside of the Unicode Basic Multiligual Plane.

Here is an example using three different techniques to iterate over the "characters" of a string (incl. using Java 8 stream API). Please notice this example includes characters of the Unicode Supplementary Multilingual Plane (SMP). You need a proper font to display this example and the result correctly.

// String containing characters of the Unicode 
// Supplementary Multilingual Plane (SMP)
// In that particular case, hieroglyphs.
String str = "The quick brown  jumps over the lazy ";

Iterate of chars

The first solution is a simple loop over all char of the string:

/* 1 */
System.out.println(
        "\n\nUsing char iterator (do not work for surrogate pairs !)");
for (int pos = 0; pos < str.length(); ++pos) {
    char c = str.charAt(pos);
    System.out.printf("%s ", Character.toString(c));
    //                       ^^^^^^^^^^^^^^^^^^^^^
    //                   Convert to String as per OP request
}

Iterate of code points

The second solution uses an explicit loop too, but accessing individual code points with codePointAt and incrementing the loop index accordingly to charCount:

/* 2 */
System.out.println(
        "\n\nUsing Java 1.5 codePointAt(works as expected)");
for (int pos = 0; pos < str.length();) {
    int cp = str.codePointAt(pos);

    char    chars[] = Character.toChars(cp);
    //                ^^^^^^^^^^^^^^^^^^^^^
    //               Convert to a `char[]`
    //               as code points outside the Unicode BMP
    //               will map to more than one Java `char`
    System.out.printf("%s ", new String(chars));
    //                       ^^^^^^^^^^^^^^^^^
    //               Convert to String as per OP request

    pos += Character.charCount(cp);
    //     ^^^^^^^^^^^^^^^^^^^^^^^
    //    Increment pos by 1 of more depending
    //    the number of Java `char` required to
    //    encode that particular codepoint.
}

Iterate over code points using the Stream API

The third solution is basically the same as the second, but using the Java 8 Stream API:

/* 3 */
System.out.println(
        "\n\nUsing Java 8 stream (works as expected)");
str.codePoints().forEach(
    cp -> {
        char    chars[] = Character.toChars(cp);
        //                ^^^^^^^^^^^^^^^^^^^^^
        //               Convert to a `char[]`
        //               as code points outside the Unicode BMP
        //               will map to more than one Java `char`
        System.out.printf("%s ", new String(chars));
        //                       ^^^^^^^^^^^^^^^^^
        //               Convert to String as per OP request
    });

Results

When you run that test program, you obtain:

Using char iterator (do not work for surrogate pairs !)
T h e   q u i c k   b r o w n   ? ?   j u m p s   o v e r   t h e   l a z y   ? ? ? ? ? ? ? ? 

Using Java 1.5 codePointAt(works as expected)
T h e   q u i c k   b r o w n      j u m p s   o v e r   t h e   l a z y       

Using Java 8 stream (works as expected)
T h e   q u i c k   b r o w n      j u m p s   o v e r   t h e   l a z y       

As you can see (if you're able to display hieroglyphs properly), the first solution does not handle properly characters outside of the Unicode BMP. On the other hand, the other two solutions deal well with surrogate pairs.

You can maybe do something like this with awk

awk '{outfile=sprintf("file%02d.txt",NR/5000+1);print > outfile}' yourfile

Basically, it calculates the name of the output file by taking the record number (NR) and dividing it by 5000, adding 1, taking the integer of that and zero-padding to 2 places.

By default, awk prints the entire input record when you don't specify anything else. So, print > outfile writes the entire input record to the output file.

As you are running on Windows, you can't use single quotes because it doesn't like that. I think you have to put the script in a file and then tell awkto use the file, something like this:

awk -f script.awk yourfile

and script.awk will contain the script like this:

{outfile=sprintf("file%02d.txt",NR/5000+1);print > outfile}

Or, it may work if you do this:

awk "{outfile=sprintf(\"file%02d.txt\",NR/5000+1);print > outfile}" yourfile

In my case (Spring 3.2.4 and Jackson 2.3.1), XML configuration for custom serializer:

<mvc:annotation-driven>
    <mvc:message-converters register-defaults="false">
        <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
            <property name="objectMapper">
                <bean class="org.springframework.http.converter.json.Jackson2ObjectMapperFactoryBean">
                    <property name="serializers">
                        <array>
                            <bean class="com.example.business.serializer.json.CustomObjectSerializer"/>
                        </array>
                    </property>
                </bean>
            </property>
        </bean>
    </mvc:message-converters>
</mvc:annotation-driven>

was in unexplained way overwritten back to default by something.

This worked for me:

CustomObject.java

@JsonSerialize(using = CustomObjectSerializer.class)
public class CustomObject {

    private Long value;

    public Long getValue() {
        return value;
    }

    public void setValue(Long value) {
        this.value = value;
    }
}

CustomObjectSerializer.java

public class CustomObjectSerializer extends JsonSerializer<CustomObject> {

    @Override
    public void serialize(CustomObject value, JsonGenerator jgen,
        SerializerProvider provider) throws IOException,JsonProcessingException {
        jgen.writeStartObject();
        jgen.writeNumberField("y", value.getValue());
        jgen.writeEndObject();
    }

    @Override
    public Class<CustomObject> handledType() {
        return CustomObject.class;
    }
}

No XML configuration (<mvc:message-converters>(...)</mvc:message-converters>) is needed in my solution.

winrm set winrm/config/client '@{TrustedHosts="machineA,machineB"}'

I also faced the same issue and it resolved by changing one flag (gradle.ext.set("allowLocalEdits", true)) to false in settings.xml.

Without declaration

To return timestamp

new Date().setDate(new Date().getDate() + 7)

To return date

new Date(new Date().setDate(new Date().getDate() + 7))

Use the "rendered" attribute available on most if not all tags in the h-namespace.

<h:outputText value="Hi George" rendered="#{Person.name == 'George'}" />

With the new syntax of RxJS 5.5+, this becomes as the following:

// RxJS 6
import { EMPTY, empty, of } from "rxjs";

// rxjs 5.5+ (<6)
import { empty } from "rxjs/observable/empty";
import { of } from "rxjs/observable/of";

empty(); // deprecated use EMPTY
EMPTY;
of({});

Just one thing to keep in mind, EMPTY completes the observable, so it won't trigger next in your stream, but only completes. So if you have, for instance, tap, they might not get trigger as you wish (see an example below).

Whereas of({}) creates an Observable and emits next with a value of {} and then it completes the Observable.

E.g.:

EMPTY.pipe(
    tap(() => console.warn("i will not reach here, as i am complete"))
).subscribe();

of({}).pipe(
    tap(() => console.warn("i will reach here and complete"))
).subscribe();

in this code data is a two dimensional array of table data

let oTable = document.getElementById('datatable-id');
let data = [...oTable.rows].map(t => [...t.children].map(u => u.innerText))

While they're both in the same complexity class, that doesn't mean they both have the same runtime. Quicksort is usually faster than mergesort, just because it's easier to code a tight implementation and the operations it does can go faster. It's because that quicksort is generally faster that people use it instead of mergesort.

However! I personally often will use mergesort or a quicksort variant that degrades to mergesort when quicksort does poorly. Remember. Quicksort is only O(n log n) on average. It's worst case is O(n^2)! Mergesort is always O(n log n). In cases where realtime performance or responsiveness is a must and your input data could be coming from a malicious source, you should not use plain quicksort.

This is the simplest way, which I used a lot. It works for any one-character delimiter.

#include<bits/stdc++.h>
using namespace std;

int main() {
   string str;

   cin >> str;
   int temp;
   vector<int> result;
   char ch;
   stringstream ss(str);

   do
   {
       ss>>temp;
       result.push_back(temp);
   }while(ss>>ch);

   for(int i=0 ; i < result.size() ; i++)
       cout<<result[i]<<endl;

   return 0;
}

If you set the text state, why not use that directly?

_handlePress(event) {
  var username=this.state.text;

Of course the variable naming could be more descriptive than 'text' but your call.

Seems to me that the built in array is fine for a stack. If you want a Queue in TypeScript here is an implementation

/**
 * A Typescript implementation of a queue.
 */
export default class Queue {

  private queue = [];
  private offset = 0;

  constructor(array = []) {
    // Init the queue using the contents of the array
    for (const item of array) {
      this.enqueue(item);
    }
  }

  /**
   * @returns {number} the length of the queue.
   */
  public getLength(): number {
    return (this.queue.length - this.offset);
  }

  /**
   * @returns {boolean} true if the queue is empty, and false otherwise.
   */
  public isEmpty(): boolean {
    return (this.queue.length === 0);
  }

  /**
   * Enqueues the specified item.
   *
   * @param item - the item to enqueue
   */
  public enqueue(item) {
    this.queue.push(item);
  }

  /**
   *  Dequeues an item and returns it. If the queue is empty, the value
   * {@code null} is returned.
   *
   * @returns {any}
   */
  public dequeue(): any {
    // if the queue is empty, return immediately
    if (this.queue.length === 0) {
      return null;
    }

    // store the item at the front of the queue
    const item = this.queue[this.offset];

    // increment the offset and remove the free space if necessary
    if (++this.offset * 2 >= this.queue.length) {
      this.queue = this.queue.slice(this.offset);
      this.offset = 0;
    }

    // return the dequeued item
    return item;
  };

  /**
   * Returns the item at the front of the queue (without dequeuing it).
   * If the queue is empty then {@code null} is returned.
   *
   * @returns {any}
   */
  public peek(): any {
    return (this.queue.length > 0 ? this.queue[this.offset] : null);
  }

}

And here is a Jest test for it

it('Queue', () => {
  const queue = new Queue();
  expect(queue.getLength()).toBe(0);
  expect(queue.peek()).toBeNull();
  expect(queue.dequeue()).toBeNull();

  queue.enqueue(1);
  expect(queue.getLength()).toBe(1);
  queue.enqueue(2);
  expect(queue.getLength()).toBe(2);
  queue.enqueue(3);
  expect(queue.getLength()).toBe(3);

  expect(queue.peek()).toBe(1);
  expect(queue.getLength()).toBe(3);
  expect(queue.dequeue()).toBe(1);
  expect(queue.getLength()).toBe(2);

  expect(queue.peek()).toBe(2);
  expect(queue.getLength()).toBe(2);
  expect(queue.dequeue()).toBe(2);
  expect(queue.getLength()).toBe(1);

  expect(queue.peek()).toBe(3);
  expect(queue.getLength()).toBe(1);
  expect(queue.dequeue()).toBe(3);
  expect(queue.getLength()).toBe(0);

  expect(queue.peek()).toBeNull();
  expect(queue.dequeue()).toBeNull();
});

Hope someone finds this useful,

Cheers,

Stu

InetAddress.getByName also works for ip address.

From the JavaDoc

The host name can either be a machine name, such as "java.sun.com", or a textual representation of its IP address. If a literal IP address is supplied, only the validity of the address format is checked.

$text1= "From time to \"time\"";

or

$text1= 'From time to "time"';

The Abstract Factory pattern is used in various places. E.g., DatagramSocketImplFactory, PreferencesFactory. There are many more---search the Javadoc for interfaces which have the word "Factory" in their name.

Also there are quite a few instances of the Factory pattern, too.

I added +/- 10-15% efficiency to the selected answer by minor code refactoring and moving the recursive function outside of the function namespace.

See my question: Are namespaced functions reevaluated on every call? for why this slows nested functions down.

function _flatten (target, obj, path) {
  var i, empty;
  if (obj.constructor === Object) {
    empty = true;
    for (i in obj) {
      empty = false;
      _flatten(target, obj[i], path ? path + '.' + i : i);
    }
    if (empty && path) {
      target[path] = {};
    }
  } 
  else if (obj.constructor === Array) {
    i = obj.length;
    if (i > 0) {
      while (i--) {
        _flatten(target, obj[i], path + '[' + i + ']');
      }
    } else {
      target[path] = [];
    }
  }
  else {
    target[path] = obj;
  }
}

function flatten (data) {
  var result = {};
  _flatten(result, data, null);
  return result;
}

See benchmark.

In my case it was simply that I had a variable named the same as a function.

Example:

def cleanCache = functionReturningABoolean()

if( cleanCache ){
    echo "Clean cache option is true, do not uninstall previous features / urls"
    uninstallCmd = ""
    
    // and we call the cleanCache method
    cleanCache(userId, serverName)
}
...

and later in my code I have the function:

def cleanCache(user, server){

 //some operations to the server

}

Apparently the Groovy language does not support this (but other languages like Java does). I just renamed my function to executeCleanCache and it works perfectly (or you can also rename your variable whatever option you prefer).

To get the actual scrollable height of the areas scrolled by the window scrollbar, I used $('body').prop('scrollHeight'). This seems to be the simplest working solution, but I haven't checked extensively for compatibility. Emanuele Del Grande notes on another solution that this probably won't work for IE below 8.

Most of the other solutions work fine for scrollable elements, but this works for the whole window. Notably, I had the same issue as Michael for Ankit's solution, namely, that $(document).prop('scrollHeight') is returning undefined.

Two warnings

Avoid 301 and prefer modern 303 or 307 response status codes.

Avoid 301

Think carefully if you really need the permanent redirect indicated as [R=301] because if you decide to change it later, then the previous visitors of the page will continue to see the page of the original redirection.

The permanent redirection information is frequently stored in the browser's cache and, in general, it is difficult to eliminate (reload the page do not solve the problem). Your website visitors will be stuck in the previous redirect "forever".

Avoid 302 too

The new version of the HTTP protocol (v1.1) added two new response status codes that can be used instead of 302.

• 303 URL redirection but demanding to change the type of request to GET.
• 307 URL Redirection but demanding to keep the type of request as initially sent.

You can still use the code 302 (non-permanent redirection) although it is considered ambiguous. In any case, most browsers implement 302 in the same way the new 303 code instructs.

$aa = fopen('a.txt','r');
echo fread($aa,filesize('a.txt'));

$a = fopen('a.txt','r');
while(!feof($a)){echo fgets($a)."<br>";}
fclose($a);

1. first go to https://myaccount.google.com
2. Select Security tab
3. Scroll down and select 'Less secure app access'
4. Turn on access

This will solve my “SMTP Error: Could not authenticate” in PHPMailer error.

This is the way to be absolutely certain :

<!doctype html> <!-- html5 -->
<html lang="en"> <!-- lang="xx" is allowed, but NO xmlns="http://www.w3.org/1999/xhtml", lang:xml="", and so on -->
<head>
<meta http-equiv="x-ua-compatible" content="IE=Edge"/> 
<!-- as the **very** first line just after head-->
..
</head>

Reason :
Whenever IE meets anything that conflicts, it turns back to "IE 7 standards mode", ignoring the x-ua-compatible.

(I know this is an answer to a very old question, but I have struggled with this myself, and above scheme is the correct answer. It works all the way, everytime)

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

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

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

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

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

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

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

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

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

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

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

The thing is that you are using the option -t when running your container.

Could you check if enabling the tty option (see reference) in your docker-compose.yml file the container keeps running?

version: '2'
services:
  ubuntu:
        build: .
        container_name: ubuntu
        volumes:
            - ~/sph/laravel52:/www/laravel
        ports:
          - "80:80"
        tty: true

The accepted answer shows the reason for the deprecation but misses to name the alternative:

CellType    getCellTypeEnum()

where the CellType is the enum decribing the type of the cell.

The plan is to rename getCellTypeEnum() back to getCellType() in POI 4.0.

Nowadays, Java 8 allows for a one-line functional solution that is cleaner, faster, and a whole lot simpler than the accepted solution:

List<String> list = new ArrayList<>();
list.add("behold");
list.add("bend");
list.add("bet");
list.add("bear");
list.add("beat");
list.add("become");
list.add("begin");

List<String> matches = list.stream().filter(it -> it.contains("bea")).collect(Collectors.toList());

System.out.println(matches); // [bear, beat]

And even easier in Kotlin:

val matches = list.filter { it.contains("bea") }

After going through the docs again, I finally found the solution.

Just add card_view:cardUseCompatPadding="true" to your CardView and shadows will appear on Lollipop devices.

What happens is, the content area in a CardView take different sizes on pre-lollipop and lollipop devices. So in lollipop devices the shadow is actually covered by the card so its not visible. By adding this attribute the content area remains the same across all devices and the shadow becomes visible.

My xml code is like :

<android.support.v7.widget.CardView
    android:id="@+id/media_card_view"
    android:layout_width="match_parent"
    android:layout_height="130dp"
    card_view:cardBackgroundColor="@android:color/white"
    card_view:cardElevation="2dp"
    card_view:cardUseCompatPadding="true"
    >
...
</android.support.v7.widget.CardView>

You could either use a lookahead assertion like others have suggested. Or, if you just want to use basic regular expression syntax:

^(.?$|[^m].+|m[^y].*)

This matches strings that are either zero or one characters long (^.?$) and thus can not be my. Or strings with two or more characters where when the first character is not an m any more characters may follow (^[^m].+); or if the first character is a m it must not be followed by a y (^m[^y]).

This might be too late to share, but I have something to contribute which might help someone, I was trying to sub-class the UINavigationBar and wanted to make it look like ios 6 with black status bar and status bar text in white.

Here is what I found working for that

        self.navigationController?.navigationBar.clipsToBounds = true
        self.navigationController?.navigationBar.translucent = false
        self.navigationController?.navigationBar.barStyle = .Black
        self.navigationController?.navigationBar.barTintColor = UIColor.whiteColor()

It made my status bar background black, status bar text white and navigation bar's color white.

iOS 9.3, XCode 7.3.1

You can use the HttpWebRequest class to do so.

Example here:

using System;
using System.Net;
using System.Text;
using System.IO;


    public class Test
    {
        // Specify the URL to receive the request.
        public static void Main (string[] args)
        {
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create (args[0]);

            // Set some reasonable limits on resources used by this request
            request.MaximumAutomaticRedirections = 4;
            request.MaximumResponseHeadersLength = 4;
            // Set credentials to use for this request.
            request.Credentials = CredentialCache.DefaultCredentials;
            HttpWebResponse response = (HttpWebResponse)request.GetResponse ();

            Console.WriteLine ("Content length is {0}", response.ContentLength);
            Console.WriteLine ("Content type is {0}", response.ContentType);

            // Get the stream associated with the response.
            Stream receiveStream = response.GetResponseStream ();

            // Pipes the stream to a higher level stream reader with the required encoding format. 
            StreamReader readStream = new StreamReader (receiveStream, Encoding.UTF8);

            Console.WriteLine ("Response stream received.");
            Console.WriteLine (readStream.ReadToEnd ());
            response.Close ();
            readStream.Close ();
        }
    }

/*
The output from this example will vary depending on the value passed into Main 
but will be similar to the following:

Content length is 1542
Content type is text/html; charset=utf-8
Response stream received.
<html>
...
</html>

*/

It's because the tab is a naming container aswell... your update should be update="Search:insTable:display" What you can do aswell is just place your dialog outside the form and still inside the tab then it would be: update="Search:display"

• Unblock multi-line comment

  Ctrl+5

• Multi-line comment

  Ctrl+4

NOTE: For my version of Spyder (3.1.4) if I highlighted the entire multi-line comment and used Ctrl+5 the block remained commented out. Only after highlighting a small portion of the multi-line comment did Ctrl+5 work.

See What is the maximum length of a URL in different browsers?

The length of the url can't be changed in PHP. The linked question is about the URL size limit, you will find what you want.

You can encapsulate the list trivially:

using System;
using System.Collections.Generic;
using System.Xml.Serialization;

[XmlRoot("user_list")]
public class UserList
{
    public UserList() {Items = new List<User>();}
    [XmlElement("user")]
    public List<User> Items {get;set;}
}
public class User
{
    [XmlElement("id")]
    public Int32 Id { get; set; }

    [XmlElement("name")]
    public String Name { get; set; }
}

static class Program
{
    static void Main()
    {
        XmlSerializer ser= new XmlSerializer(typeof(UserList));
        UserList list = new UserList();
        list.Items.Add(new User { Id = 1, Name = "abc"});
        list.Items.Add(new User { Id = 2, Name = "def"});
        list.Items.Add(new User { Id = 3, Name = "ghi"});
        ser.Serialize(Console.Out, list);
    }
}

import wx

def ctc(text):

    if not wx.TheClipboard.IsOpened():
        wx.TheClipboard.Open()
        data = wx.TextDataObject()
        data.SetText(text)
        wx.TheClipboard.SetData(data)
    wx.TheClipboard.Close()

ctc(text)

You need to assign the connection to the SqlCommand, you can use the constructor or the property:

cmd.InsertCommand = new SqlCommand("INSERT INTO Application VALUES (@EventLog, @TimeGenerated, @EventType, @SourceName, @ComputerName, @InstanceId, @Message) ");
cmd.InsertCommand.Connection = connection1;

I strongly recommend to use the using-statement for any type implementing IDisposable like SqlConnection, it'll also close the connection:

using(var connection1 = new SqlConnection(@"Data Source=.\sqlexpress;Initial Catalog=syslog2;Integrated Security=True"))
using(var cmd = new SqlDataAdapter())
using(var insertCommand = new SqlCommand("INSERT INTO Application VALUES (@EventLog, @TimeGenerated, @EventType, @SourceName, @ComputerName, @InstanceId, @Message) "))
{
    insertCommand.Connection = connection1;
    cmd.InsertCommand = insertCommand;
    //.....
    connection1.Open();
    // .... you don't need to close the connection explicitely
}

Apart from that you don't need to create a new connection and DataAdapter for every entry in the foreach, even if creating, opening and closing a connection does not mean that ADO.NET will create, open and close a physical connection but just looks into the connection-pool for an available connection. Nevertheless it's an unnecessary overhead.

define a String variable using the JSP tags

<%!
String test = new String();
%>

then refer to that variable in your loop as

<c:forEach items="${myParams.items}" var="currentItem" varStatus="stat">
test+= whaterver_value
</c:forEach>

If you get an OutOfMemoryError then it's usually too late to call the garbage collector...

Here is quote from Android Developer:

Most of the time, garbage collection occurs because of tons of small, short-lived objects and some garbage collectors, like generational garbage collectors, can optimize the collection of these objects so that the application does not get interrupted too often. The Android garbage collector is unfortunately not able to perform such optimizations and the creation of short-lived objects in performance critical code paths is thus very costly for your application.

So to my understanding, there is no urgent need to call the gc. It's better to spend more effort in avoiding the unnecessary creation of objects (like creation of objects inside loops)

Here are the instructions for Windows users on connecting to a RPi by using just an Ethernet cable and a DHCP server. There is no need for a cross over cable, as the RPi can handle it. I have a blog post that documents this with pictures here which may be easier to follow.

Downloads

Download the DHCP Server for Windows (download link is here). Unzip the zip file and open the dhcpwiz application, which will configure the DHCP server.

DHCP Server Configuration

Hit next on the first screen.

On the second screen, look for a "Local Area Connection" row and verify its IP address is 0.0.0.0 and its status is enabled. Connect the Ethernet cable from the RPi to your laptop, and turn on the Pi. Hit refresh on this screen until the IP address changes to 169.254.*.*. If it is anything else then you should alter your network settings for the Local Area Connection (make sure it is not a static IP/DNS). Click on this Local Area Connection row and hit next.

Check HTTP (Web Server). This makes it much more easy to locate the RPi's IP address. Hit Next.

Take the defaults and hit Next until you get to the Writing the INI file screen. Check Overwrite existing file and hit the Write INI file button. Then hit Next.

On the final screen, check Run DHCP server immediately and hit `Finish.

DHCP Server and Obtaining the IP Address of your Raspberry PI

This launches the actual DHCP server, using the configuration you just created in the previous wizard. Click the Continue as tray app button, and the DHCP server will be minimized to your system tray.

Anywhere from 1 second to 5 minutes from now you will see an alert on the system tray with your laptop and your RPi's new IP address. This alert is really quick and you will probably miss it. Normally your RPi's IP is 169.254.0.2, but it could be *.01 or even something else. It is easier to access the DHCP server's web UI at http://localhost/dhcpstatus.xml. This will list the hostname as "raspberrypi" with its IP address.

Now you can putty or remote desktop into your RPi, and configure its wireless settings or whatever you want to do.

Trouble shooting

This can be somewhat finicky. I've had my connection appear to drop and have been unable to SSH back in using the IP address. Normally, I can restart the Pi and get the IP address again. Sometimes I have to restart both the RPi and the DHCP server. Sometimes I have to do this multiple times. At one point when I wasn't getting a connection for 15 minutes, I copied all of the files in the dhcpsrv2.5.1 folder to a new folder and tried again; it immediately worked.

Updated 10-second countdown using Hooks (a new feature proposal that lets you use state and other React features without writing a class. They’re currently in React v16.7.0-alpha).

import React, { useState, useEffect } from 'react';
import ReactDOM from 'react-dom';

const Clock = () => {
    const [currentCount, setCount] = useState(10);
    const timer = () => setCount(currentCount - 1);

    useEffect(
        () => {
            if (currentCount <= 0) {
                return;
            }
            const id = setInterval(timer, 1000);
            return () => clearInterval(id);
        },
        [currentCount]
    );

    return <div>{currentCount}</div>;
};

const App = () => <Clock />;

ReactDOM.render(<App />, document.getElementById('root'));

To tweak a bit in order to handle the case where the variable is not set you could use a default value:

@Value("${spring.profiles.active:unknown}")
private String activeProfile;

This way if spring.profiles.active is set, it will take it else it will take the default value unknown.

So no exception will be triggered. And no need to force add something like @ActiveProfiles("test") in your test to make it pass.

This can happen if you forget to return a value from a function: it then returns None. Look at all places where you are assigning to that variable, and see if one of them is a function call where the function lacks a return statement.

Yes, you should use HTTP status codes. And also preferably return error descriptions in a somewhat standardized JSON format, like Nottingham’s proposal, see apigility Error Reporting:

The payload of an API Problem has the following structure:

• type: a URL to a document describing the error condition (optional, and "about:blank" is assumed if none is provided; should resolve to a human-readable document; Apigility always provides this).
• title: a brief title for the error condition (required; and should be the same for every problem of the same type; Apigility always provides this).
• status: the HTTP status code for the current request (optional; Apigility always provides this).
• detail: error details specific to this request (optional; Apigility requires it for each problem).
• instance: URI identifying the specific instance of this problem (optional; Apigility currently does not provide this).

Found solution in http://senthilkl.blogspot.lu/2012/11/how-to-send-html-emails-using-sendemail.html

sendEmail -f "oracle@server" -t "[email protected]" -u "Alert: Backup complete" -o message-content-type=html -o message-file=$LOG_FILE  -a $LOG_FILE_ATTACH 

From the Twitter FAQ:

Most integrations with the API will require you to identify your application to Twitter by way of an API key. On the Twitter platform, the term "API key" usually refers to what's called an OAuth consumer key. This string identifies your application when making requests to the API. In OAuth 1.0a, your "API keys" probably refer to the combination of this consumer key and the "consumer secret," a string that is used to securely "sign" your requests to Twitter.

Compilation from jonearles' answer, http://kishantha.blogspot.com/2010/03/oracle-enterprise-manager-console.html and http://blog.flimatech.com/2011/07/17/changing-oracle-password-in-11g-using-alter-user-identified-by-values/ (Oracle 11g):

To stop this happening in the future do the following.

• Login to sqlplus as sysdba -> sqlplus "/as sysdba"
• Execute ->ALTER PROFILE DEFAULT LIMIT FAILED_LOGIN_ATTEMPTS UNLIMITED PASSWORD_LIFE_TIME UNLIMITED;

To reset users' status, run the query:

select
'alter user ' || su.name || ' identified by values'
   || ' ''' || spare4 || ';'    || su.password || ''';'
from sys.user$ su 
join dba_users du on ACCOUNT_STATUS like 'EXPIRED%' and su.name = du.username;

and execute some or all of the result set.

The RxJS functions need to be specifically imported. An easy way to do this is to import all of its features with import * as Rx from "rxjs/Rx"

Then make sure to access the Observable class as Rx.Observable.

Add the DLL as an existing item to one of the projects and it should be sorted

If you're a Windows user, opencv can be installed using pip, like this:

pip install opencv-python==<python version>

ex - pip install opencv-python==3.6

If you're a Linux user:

sudo apt-get install python-opencv

At the same time, opencv can be installed using conda like this...

conda install -c https://conda.binstar.org/menpo opencv=3.6

My question is: Why is not calling return faster

It’s faster because return is a (primitive) function in R, which means that using it in code incurs the cost of a function call. Compare this to most other programming languages, where return is a keyword, but not a function call: it doesn’t translate to any runtime code execution.

That said, calling a primitive function in this way is pretty fast in R, and calling return incurs a minuscule overhead. This isn’t the argument for omitting return.

or better, and thus preferable?

Because there’s no reason to use it.

Because it’s redundant, and it doesn’t add useful redundancy.

To be clear: redundancy can sometimes be useful. But most redundancy isn’t of this kind. Instead, it’s of the kind that adds visual clutter without adding information: it’s the programming equivalent of a filler word or chartjunk).

Consider the following example of an explanatory comment, which is universally recognised as bad redundancy because the comment merely paraphrases what the code already expresses:

# Add one to the result
result = x + 1

Using return in R falls in the same category, because R is a functional programming language, and in R every function call has a value. This is a fundamental property of R. And once you see R code from the perspective that every expression (including every function call) has a value, the question then becomes: “why should I use return?” There needs to be a positive reason, since the default is not to use it.

One such positive reason is to signal early exit from a function, say in a guard clause:

f = function (a, b) {
    if (! precondition(a)) return() # same as `return(NULL)`!
    calculation(b)
}

This is a valid, non-redundant use of return. However, such guard clauses are rare in R compared to other languages, and since every expression has a value, a regular if does not require return:

sign = function (num) {
    if (num > 0) {
        1
    } else if (num < 0) {
        -1
    } else {
        0
    }
}

We can even rewrite f like this:

f = function (a, b) {
    if (precondition(a)) calculation(b)
}

… where if (cond) expr is the same as if (cond) expr else NULL.

Finally, I’d like to forestall three common objections:

1. Some people argue that using return adds clarity, because it signals “this function returns a value”. But as explained above, every function returns something in R. Thinking of return as a marker of returning a value isn’t just redundant, it’s actively misleading.

2. Relatedly, the Zen of Python has a marvellous guideline that should always be followed:

   Explicit is better than implicit.

   How does dropping redundant return not violate this? Because the return value of a function in a functional language is always explicit: it’s its last expression. This is again the same argument about explicitness vs redundancy.

   In fact, if you want explicitness, use it to highlight the exception to the rule: mark functions that don’t return a meaningful value, which are only called for their side-effects (such as cat). Except R has a better marker than return for this case: invisible. For instance, I would write

   save_results = function (results, file) {
       # … code that writes the results to a file …
       invisible()
   }
   

3. But what about long functions? Won’t it be easy to lose track of what is being returned?

   Two answers: first, not really. The rule is clear: the last expression of a function is its value. There’s nothing to keep track of.

   But more importantly, the problem in long functions isn’t the lack of explicit return markers. It’s the length of the function. Long functions almost (?) always violate the single responsibility principle and even when they don’t they will benefit from being broken apart for readability.

I was having following issues for @Lalit Kumars answer,

ORA-19202: Error occurred in XML processing
ORA-00904: "SUCCESS": invalid identifier
ORA-06512: at "SYS.DBMS_XMLGEN", line 288
ORA-06512: at line 1
19202. 00000 -  "Error occurred in XML processing%s"
*Cause:    An error occurred when processing the XML function
*Action:   Check the given error message and fix the appropriate problem

Solution is:

WITH  char_cols AS
  (SELECT /*+materialize */ table_name, column_name
   FROM   cols
   WHERE  data_type IN ('CHAR', 'VARCHAR2'))
SELECT DISTINCT SUBSTR (:val, 1, 11) "Searchword",
       SUBSTR (table_name, 1, 14) "Table",
       SUBSTR (column_name, 1, 14) "Column"
FROM   char_cols,
       TABLE (xmlsequence (dbms_xmlgen.getxmltype ('select "'
       || column_name
       || '" from "'
       || table_name
       || '" where upper("'
       || column_name
       || '") like upper(''%'
       || :val
       || '%'')' ).extract ('ROWSET/ROW/*') ) ) t
ORDER  BY "Table"
/ 

The stash command will stash any changes you have made since your last commit. In your case there is no reason to stash if you are gonna continue working on it the next day. I would only use stash to undo changes that you don't want to commit.

I've managed a project that does this with sockets for years. Zebra's typically use port 6101. I'll look through the code and post what I can.

public void SendData(string zpl)
{
    NetworkStream ns = null;
    Socket socket = null;

    try
    {
        if (printerIP == null)
        {
            /* IP is a string property for the printer's IP address. */
            /* 6101 is the common port of all our Zebra printers. */
            printerIP = new IPEndPoint(IPAddress.Parse(IP), 6101);  
        }

        socket = new Socket(AddressFamily.InterNetwork,
            SocketType.Stream,
            ProtocolType.Tcp);
        socket.Connect(printerIP);

        ns = new NetworkStream(socket);

        byte[] toSend = Encoding.ASCII.GetBytes(zpl);
        ns.Write(toSend, 0, toSend.Length);
    }
    finally
    {
        if (ns != null)
            ns.Close();

        if (socket != null && socket.Connected)
            socket.Close();
    }
}

 import java.io.PrintWriter;
import java.io.StringWriter;

public class PrintStackTrace {

    public static void main(String[] args) {

        try {
            int division = 0 / 0;
        } catch (ArithmeticException e) {
            StringWriter sw = new StringWriter();
            e.printStackTrace(new PrintWriter(sw));
            String exceptionAsString = sw.toString();
            System.out.println(exceptionAsString);
        }
    }
}

When you run the program, the output will be something similar:

java.lang.ArithmeticException: / by zero
at PrintStackTrace.main(PrintStackTrace.java:9)

The default is height: auto in browser, but height: X% Defines the height in percentage of the containing block.

Use AutoMapper...

public IEnumerable<User> GetAll()
    {
        using (Database db = new Database())
        {
            var users = AutoMapper.Mapper.DynamicMap<List<User>>(db.Users);
            return users;
        }
    }

To add a bit to accepted answer ...

If you get an UnfinishedStubbingException, be sure to set the method to be stubbed after the when closure, which is different than when you write Mockito.when

Mockito.doNothing().when(mock).method()    //method is declared after 'when' closes

Mockito.when(mock.method()).thenReturn(something)   //method is declared inside 'when'

**Different way to Find Element:**

IEDriver.findElement(By.id("id"));
IEDriver.findElement(By.linkText("linkText"));
IEDriver.findElement(By.xpath("xpath"));

IEDriver.findElement(By.xpath(".//*[@id='id']"));
IEDriver.findElement(By.xpath("//button[contains(.,'button name')]"));
IEDriver.findElement(By.xpath("//a[contains(.,'text name')]"));
IEDriver.findElement(By.xpath("//label[contains(.,'label name')]"));

IEDriver.findElement(By.xpath("//*[contains(text(), 'your text')]");

Check Case Sensitive:
IEDriver.findElement(By.xpath("//*[contains(lower-case(text()),'your text')]");

For exact match: 
IEDriver.findElement(By.xpath("//button[text()='your text']");

**Find NG-Element:**

Xpath == //td[contains(@ng-show,'childsegment.AddLocation')]
CssSelector == .sprite.icon-cancel

Why not update the files on the local file system instead? You can read/write files into your applications sandboxed area.

http://developer.android.com/guide/topics/data/data-storage.html#filesInternal

Other alternatives you may want to look into are Shared Perferences and using Cache Files (all described at the link above)

You could also create a custom model field type - see http://docs.djangoproject.com/en/dev/howto/custom-model-fields/#howto-custom-model-fields

In this case, you could 'inherit' from the built-in IntegerField and override its validation logic.

The more I think about this, I realize how useful this would be for many Django apps. Perhaps a IntegerRangeField type could be submitted as a patch for the Django devs to consider adding to trunk.

This is working for me:

from django.db import models

class IntegerRangeField(models.IntegerField):
    def __init__(self, verbose_name=None, name=None, min_value=None, max_value=None, **kwargs):
        self.min_value, self.max_value = min_value, max_value
        models.IntegerField.__init__(self, verbose_name, name, **kwargs)
    def formfield(self, **kwargs):
        defaults = {'min_value': self.min_value, 'max_value':self.max_value}
        defaults.update(kwargs)
        return super(IntegerRangeField, self).formfield(**defaults)

Then in your model class, you would use it like this (field being the module where you put the above code):

size = fields.IntegerRangeField(min_value=1, max_value=50)

OR for a range of negative and positive (like an oscillator range):

size = fields.IntegerRangeField(min_value=-100, max_value=100)

What would be really cool is if it could be called with the range operator like this:

size = fields.IntegerRangeField(range(1, 50))

But, that would require a lot more code since since you can specify a 'skip' parameter - range(1, 50, 2) - Interesting idea though...

var text = '<p>name</p><p><span style="font-size:xx-small;">ajde</span></p><p><em>da</em></p>';
var decoded = $('<textarea/>').html(text).text();
alert(decoded);

This sets the innerHTML of a new element (not appended to the page), causing jQuery to decode it into HTML, which is then pulled back out with .text().

Live demo.

If you use the flask executable to start your server, you can use flask run --host=0.0.0.0 to change the default from 127.0.0.1 and open it up to non local connections. The config and app.run methods that the other answers describe are probably better practice but this can be handy as well.

Externally Visible Server If you run the server you will notice that the server is only accessible from your own computer, not from any other in the network. This is the default because in debugging mode a user of the application can execute arbitrary Python code on your computer.

If you have the debugger disabled or trust the users on your network, you can make the server publicly available simply by adding --host=0.0.0.0 to the command line:

flask run --host=0.0.0.0 This tells your operating system to listen on all public IPs.

Reference: http://flask.pocoo.org/docs/0.11/quickstart/

You could use:

line.Replace(@"\", "");

or

line.Replace(@"\", string.Empty);

DECLARE #MyTempTable TABLE (SiteName varchar(50), BillingMonth varchar(10), Consumption float)

INSERT INTO #MyTempTable (SiteName, BillingMonth, Consumption)
SELECT  tblMEP_Sites.Name AS SiteName, convert(varchar(10),BillingMonth ,101) AS BillingMonth, SUM(Consumption) AS Consumption
FROM tblMEP_Projects.......  --your joining statements

Here, # - use this to create table inside tempdb
@ - use this to create table as variable.

TYPE variable = jsonbody["key"]?.Value<TYPE>() ?? DEFAULT_VALUE;

e.g.

bool attachMap = jsonbody["map"]?.Value<bool>() ?? false;

function convert() {
                    dom = document.getElementById('divname');
                    var script,
                    $this = this,
                    options = this.options,
                    runH2c = function(){
                        try {
                            var canvas =     window.html2canvas([ document.getElementById('divname') ], {
                                onrendered: function( canvas ) {

                                window.open(canvas.toDataURL());

                                }
                            });
                        } catch( e ) {
                            $this.h2cDone = true;
                            log("Error in html2canvas: " + e.message);
                        }
                    };

                    if ( window.html2canvas === undefined && script === undefined ) {
                    } else {.
                        // html2canvas already loaded, just run it then
                        runH2c();
                    }
                }

'use strict'
var fs = require("fs");

/***
 * implementation of readFileSync
 */
var data = fs.readFileSync('input.txt');
console.log(data.toString());
console.log("Program Ended");

/***
 * implementation of readFile 
 */
fs.readFile('input.txt', function (err, data) {
    if (err) return console.error(err);
   console.log(data.toString());
});

console.log("Program Ended");

For better understanding run the above code and compare the results..

By writing below code you will get the location:

/storage/663D-554E/Android/data/app_package_name/files/

which stores your app data at /android/data location inside the sd_card.

File[] list = ContextCompat.getExternalFilesDirs(MainActivity.this, null);

list[1]+"/fol" 

for getting location pass 0 for internal and 1 for sdcard to file array.

I have tested this code on a moto g4 plus and Samsung device (all works fine).

hope this might helpful.