Relevant in C++11 is the emplace family of member functions, which allow you to transfer ownership of objects by moving them into containers.

The idiom of usage would look like

std::vector<Object> objs;

Object l_value_obj { /* initialize */ };
// use object here...

objs.emplace_back(std::move(l_value_obj));

The move for the lvalue object is important as otherwise it would be forwarded as a reference or const reference and the move constructor would not be called.

You should return by value.

The standard has a specific feature to improve the efficiency of returning by value. It's called "copy elision", and more specifically in this case the "named return value optimization (NRVO)".

Compilers don't have to implement it, but then again compilers don't have to implement function inlining (or perform any optimization at all). But the performance of the standard libraries can be pretty poor if compilers don't optimize, and all serious compilers implement inlining and NRVO (and other optimizations).

When NRVO is applied, there will be no copying in the following code:

std::vector<int> f() {
    std::vector<int> result;
    ... populate the vector ...
    return result;
}

std::vector<int> myvec = f();

But the user might want to do this:

std::vector<int> myvec;
... some time later ...
myvec = f();

Copy elision does not prevent a copy here because it's an assignment rather than an initialization. However, you should still return by value. In C++11, the assignment is optimized by something different, called "move semantics". In C++03, the above code does cause a copy, and although in theory an optimizer might be able to avoid it, in practice its too difficult. So instead of myvec = f(), in C++03 you should write this:

std::vector<int> myvec;
... some time later ...
f().swap(myvec);

There is another option, which is to offer a more flexible interface to the user:

template <typename OutputIterator> void f(OutputIterator it) {
    ... write elements to the iterator like this ...
    *it++ = 0;
    *it++ = 1;
}

You can then also support the existing vector-based interface on top of that:

std::vector<int> f() {
    std::vector<int> result;
    f(std::back_inserter(result));
    return result;
}

This might be less efficient than your existing code, if your existing code uses reserve() in a way more complex than just a fixed amount up front. But if your existing code basically calls push_back on the vector repeatedly, then this template-based code ought to be as good.

I think the most efficient way is to preallocate and then emplace elements:

template <typename T>
std::vector<T> VectorFromSet(const std::set<T>& from)
{
    std::vector<T> to;
    to.reserve(from.size());

    for (auto const& value : from)
        to.emplace_back(value);

    return to;
}

That way we will only invoke copy constructor for every element as opposed to calling default constructor first and then copy assignment operator for other solutions listed above. More clarifications below.

1. back_inserter may be used but it will invoke push_back() on the vector (https://en.cppreference.com/w/cpp/iterator/back_insert_iterator). emplace_back() is more efficient because it avoids creating a temporary when using push_back(). It is not a problem with trivially constructed types but will be a performance implication for non-trivially constructed types (e.g. std::string).

2. We need to avoid constructing a vector with the size argument which causes all elements default constructed (for nothing). Like with solution using std::copy(), for instance.

3. And, finally, vector::assign() method or the constructor taking the iterator range are not good options because they will invoke std::distance() (to know number of elements) on set iterators. This will cause unwanted additional iteration through the all set elements because the set is Binary Search Tree data structure and it does not implement random access iterators.

Hope that helps.

According to the discussion here you can directly compare two vectors using

==

if (vector1 == vector2){
   //true
}
else{
   //false
}

There is no error in the following piece of code:

float arr[4];
arr[0] = 6.28;
arr[1] = 2.50;
arr[2] = 9.73;
arr[3] = 4.364;
std::vector<float*> vec = std::vector<float*>();
vec.push_back(arr);
float* ptr = vec.front();
for (int i = 0; i < 3; i++)
    printf("%g\n", ptr[i]);

OUTPUT IS:

6.28

2.5

9.73

4.364

IN CONCLUSION:

std::vector<double*>

is another possibility apart from

std::vector<std::array<double, 4>>

that James McNellis suggested.

1. If your container only contains unique values, consider using std::set instead. It allows querying of set membership with logarithmic complexity.

    std::set<std::string> s;
    s.insert("abc");
    s.insert("xyz");
    if (s.find("abc") != s.end()) { ...
   

2. If your vector is kept sorted, use std::binary_search, it offers logarithmic complexity as well.

3. If all else fails, fall back to std::find, which is a simple linear search.

As always when you ask about fastest: Measure! Using the Methods above (on a Mac using Clang):

Method      |  executable size  |  Time Taken (in sec) |
            |  -O0    |  -O3    |  -O0      |  -O3     |  
------------|---------|---------|-----------|----------|
1. memset   | 17 kB   | 8.6 kB  | 0.125     | 0.124    |
2. fill     | 19 kB   | 8.6 kB  | 13.4      | 0.124    |
3. manual   | 19 kB   | 8.6 kB  | 14.5      | 0.124    |
4. assign   | 24 kB   | 9.0 kB  | 1.9       | 0.591    |

using 100000 iterations on an vector of 10000 ints.

Edit: If changeing this numbers plausibly changes the resulting times you can have some confidence (not as good as inspecting the final assembly code) that the artificial benchmark has not been optimized away entirely. Of course it is best to messure the performance under real conditions. end Edit

for reference the used code:

#include <vector>

#define TEST_METHOD 1
const size_t TEST_ITERATIONS = 100000;
const size_t TEST_ARRAY_SIZE = 10000;

int main(int argc, char** argv) {

   std::vector<int> v(TEST_ARRAY_SIZE, 0);

   for(size_t i = 0; i < TEST_ITERATIONS; ++i) {
   #if TEST_METHOD == 1 
      memset(&v[0], 0, v.size() * sizeof v[0]);
   #elif TEST_METHOD == 2
      std::fill(v.begin(), v.end(), 0);
   #elif TEST_METHOD == 3
      for (std::vector<int>::iterator it=v.begin(), end=v.end(); it!=end; ++it) {
         *it = 0;
      }
   #elif TEST_METHOD == 4
      v.assign(v.size(),0);
   #endif
   }

   return EXIT_SUCCESS;
}

Conclusion: use std::fill (because, as others have said its most idiomatic)!

With C++11, I'd prefer following to append vector b to a:

std::move(b.begin(), b.end(), std::back_inserter(a));

when a and b are not overlapped, and b is not going to be used anymore.

This is std::move from <algorithm>, not the usual std::move from <utility>.

Its pretty simple you use the sort function from algorithm and add your own compare function

vector< pair<int,int > > v;
sort(v.begin(),v.end(),myComparison);

Now you have to make the comparison based on the second selection so declare you "myComparison" as

bool myComparison(const pair<int,int> &a,const pair<int,int> &b)
{
       return a.second<b.second;
}

For people who want one-liners without loops:

I can't believe that noone has though of this, but perhaps it's because of the more C-like approach. Anyways, it is perfectly safe to do this without a loop, in a one-liner, ASSUMING that the std::vector<char> is null-terminated:

std::vector<char> test { 'H', 'e', 'l', 'l', 'o', ',', ' ', 'w', 'o', 'r', 'l', 'd', '!', '\0' };
std::cout << test.data() << std::endl;

But I would wrap this in the ostream operator, as @Zorawar suggested, just to be safe:

template <typename T>std::ostream& operator<< (std::ostream& out, std::vector<T>& v)
{
    v.push_back('\0'); // safety-check!
    out << v.data();
    return out;
}

std::cout << test << std::endl; // will print 'Hello, world!'

We can achieve similar behaviour by using printf instead:

fprintf(stdout, "%s\n", &test[0]); // will also print 'Hello, world!'

NOTE:

The overloaded ostream operator needs to accept the vector as non-const. This might make the program insecure or introduce misusable code. Also, since null-character is appended, a reallocation of the std::vector might occur. So using for-loops with iterators will likely be faster.

I just wanted to mention that one can get the detailed GC log with the

-XX:+PrintGCDetails 

parameter. Then you see the PSYoungGen or PSPermGen output like in the answer.

Also -Xloggc:gc.log seems to generate the same output like -verbose:gc but you can specify an output file in the first.

Example usage:

java -Xloggc:./memory.log -XX:+PrintGCDetails Memory

To visualize the data better you can try gcviewer (a more recent version can be found on github).

Take care to write the parameters correctly, I forgot the "+" and my JBoss would not start up, without any error message!

You could also just run

go build

in your project folder myproject/go/src/myprog

Then you can just type

./myprog

to run your app

A simple call back program. Hope it answers your question.

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include "../../common_typedef.h"

typedef void (*call_back) (S32, S32);

void test_call_back(S32 a, S32 b)
{
    printf("In call back function, a:%d \t b:%d \n", a, b);
}

void call_callback_func(call_back back)
{
    S32 a = 5;
    S32 b = 7;

    back(a, b);
}

S32 main(S32 argc, S8 *argv[])
{
    S32 ret = SUCCESS;

    call_back back;

    back = test_call_back;

    call_callback_func(back);

    return ret;
}

If you want to use a NSArray, you need an Objective-C class to put in it - hence the NSNumber requirement.

That said, Obj-C is still C, so you can use regular C arrays and hold regular ints instead of NSNumbers if you need to.

Why not use a library function to validate the ip address?

>>> ip="241.1.1.112343434" 
>>> socket.inet_aton(ip)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
socket.error: illegal IP address string passed to inet_aton

You can use the .update() method if you don't need the original d2 any more:

Update the dictionary with the key/value pairs from other, overwriting existing keys. Return None.

E.g.:

>>> d1 = {'a': 1, 'b': 2} 
>>> d2 = {'b': 1, 'c': 3}
>>> d2.update(d1)
>>> d2
{'a': 1, 'c': 3, 'b': 2}

Update:

Of course you can copy the dictionary first in order to create a new merged one. This might or might not be necessary. In case you have compound objects (objects that contain other objects, like lists or class instances) in your dictionary, copy.deepcopy should also be considered.

Here's the link I used as a guide. Hope this helps!

Converting HTML to PDF using ITextSharp

protected void Page_Load(object sender, EventArgs e)
    {
        try
        {
            string strHtml = string.Empty;
            //HTML File path -http://aspnettutorialonline.blogspot.com/
            string htmlFileName = Server.MapPath("~") + "\\files\\" + "ConvertHTMLToPDF.htm";
            //pdf file path. -http://aspnettutorialonline.blogspot.com/
            string pdfFileName = Request.PhysicalApplicationPath + "\\files\\" + "ConvertHTMLToPDF.pdf";

            //reading html code from html file
            FileStream fsHTMLDocument = new FileStream(htmlFileName, FileMode.Open, FileAccess.Read);
            StreamReader srHTMLDocument = new StreamReader(fsHTMLDocument);
            strHtml = srHTMLDocument.ReadToEnd();
            srHTMLDocument.Close();

            strHtml = strHtml.Replace("\r\n", "");
            strHtml = strHtml.Replace("\0", "");

            CreatePDFFromHTMLFile(strHtml, pdfFileName);

            Response.Write("pdf creation successfully with password -http://aspnettutorialonline.blogspot.com/");
        }
        catch (Exception ex)
        {
            Response.Write(ex.Message);
        }
    }
    public void CreatePDFFromHTMLFile(string HtmlStream, string FileName)
    {
        try
        {
            object TargetFile = FileName;
            string ModifiedFileName = string.Empty;
            string FinalFileName = string.Empty;

            /* To add a Password to PDF -http://aspnettutorialonline.blogspot.com/ */
            TestPDF.HtmlToPdfBuilder builder = new TestPDF.HtmlToPdfBuilder(iTextSharp.text.PageSize.A4);
            TestPDF.HtmlPdfPage first = builder.AddPage();
            first.AppendHtml(HtmlStream);
            byte[] file = builder.RenderPdf();
            File.WriteAllBytes(TargetFile.ToString(), file);

            iTextSharp.text.pdf.PdfReader reader = new iTextSharp.text.pdf.PdfReader(TargetFile.ToString());
            ModifiedFileName = TargetFile.ToString();
            ModifiedFileName = ModifiedFileName.Insert(ModifiedFileName.Length - 4, "1");

            string password = "password";
            iTextSharp.text.pdf.PdfEncryptor.Encrypt(reader, new FileStream(ModifiedFileName, FileMode.Append), iTextSharp.text.pdf.PdfWriter.STRENGTH128BITS, password, "", iTextSharp.text.pdf.PdfWriter.AllowPrinting);
            //http://aspnettutorialonline.blogspot.com/
            reader.Close();
            if (File.Exists(TargetFile.ToString()))
                File.Delete(TargetFile.ToString());
            FinalFileName = ModifiedFileName.Remove(ModifiedFileName.Length - 5, 1);
            File.Copy(ModifiedFileName, FinalFileName);
            if (File.Exists(ModifiedFileName))
                File.Delete(ModifiedFileName);

        }
        catch (Exception ex)
        {
            throw ex;
        }
    }

You can download the sample file. Just place the html you want to convert in the files folder and run. It will automatically generate the pdf file and place it in the same folder. But in your case, you can specify your html path in the htmlFileName variable.

I really hate forms which don't tell me what input(s) is/are missing. So I improve the Dominic's answer - thanks for this.

In the css file set the "borderR" class to border has red color.

$('#<form_id>').submit(function () {
    var allIsOk = true;

    // Check if empty of not
    $(this).find( 'input[type!="hidden"]' ).each(function () {
        if ( ! $(this).val() ) { 
            $(this).addClass('borderR').focus();
            allIsOk = false;
        }
    });

    return allIsOk
});

If you are using tomcat as your server runtime and you get this error in tests (because tomcat runtime is not available during tests) than it makes make sense to include tomcat el runtime instead of the one from glassfish). This would be:

    <dependency>
        <groupId>org.apache.tomcat</groupId>
        <artifactId>tomcat-el-api</artifactId>
        <version>8.5.14</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.apache.tomcat</groupId>
        <artifactId>tomcat-jasper-el</artifactId>
        <version>8.5.14</version>
        <scope>test</scope>
    </dependency>

For tomcat you can increase the permGem space by using

 -XX:MaxPermSize=128m

For this you need to create (if not already exists) a file named setenv.sh in tomcat/bin folder and include following line in it

   export JAVA_OPTS="-XX:MaxPermSize=128m"

Reference : http://wiki.razuna.com/display/ecp/Adjusting+Memory+Settings+for+Tomcat

I would suggest a slight change in your logic. It may or may not work, depending on what you need to accomplish.

handle_event() can still do the "boring default code" but instead of being virtual, at the point where you want it to do the "new exciting code" have the base class call an abstract method (i.e. must-be-overridden) method that will be supplied by your descendant class.

EDIT: And if you later decide that some of your descendant classes do not need to provide "new exciting code" then you can change the abstract to virtual and supply an empty base class implementation of that "inserted" functionality.

Using your example dataframe, we could:

xtabs(value ~ name + numbers, data = dat1)

Use a public static class and access it from anywhere.

public static class MyGlobals {
    public const string Prefix = "ID_"; // cannot change
    public static int Total = 5; // can change because not const
}

used like so, from master page or anywhere:

string strStuff = MyGlobals.Prefix + "something";
textBox1.Text = "total of " + MyGlobals.Total.ToString();

You don't need to make an instance of the class; in fact you can't because it's static. new Just use it directly. All members inside a static class must also be static. The string Prefix isn't marked static because const is implicitly static by nature.

The static class can be anywhere in your project. It doesn't have to be part of Global.asax or any particular page because it's "global" (or at least as close as we can get to that concept in object-oriented terms.)

You can make as many static classes as you like and name them whatever you want.

Sometimes programmers like to group their constants by using nested static classes. For example,

public static class Globals {
    public static class DbProcedures {
        public const string Sp_Get_Addresses = "dbo.[Get_Addresses]";
        public const string Sp_Get_Names = "dbo.[Get_First_Names]";
    }
    public static class Commands {
        public const string Go = "go";
        public const string SubmitPage = "submit_now";
    }
}

and access them like so:

MyDbCommand proc = new MyDbCommand( Globals.DbProcedures.Sp_Get_Addresses );
proc.Execute();
//or
string strCommand = Globals.Commands.Go;

Be sure that the tag "php" is stick in the code like this:

?php phpinfo(); ?>

Not like this:

? php phpinfo(); ?>

OR the server will treat it as a (normal word), so the server will not understand the language you are writing to deal with it so it will be blank.

I know it's a silly error ...but it happened ^_^

Did You use Zend Framework? I have the same problem too.
I solved it by commenting out this the following line in config/application.ini:

;includePaths.library = APPLICATION_PATH "/../library"

I hope this will help you.

Try, It worked for me:

$ docker ps -a
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS               NAMES
4f13b53be9dd        5b0bbf1173ea        "/opt/app/netjet..."   5 months ago        Dead                                    appname_chess

$ docker rm $(docker ps --all -q -f status=dead)
Error response from daemon: driver "devicemapper" failed to remove root filesystem for 4f13b53be9ddef3e9ba281546aef1c544805282971f324291a1dc91b50eeb440: failed to remove device 487b4b73c58d19ef79201cf6d5fcd6b7316e612e99c14505a6bf24399cad9795-init: devicemapper: Error running DeleteDevice dm_task_run failed

su
cd /var/lib/docker/containers
[root@localhost containers]#  ls -l
total 0
drwx------. 1 root root 312 Nov 17 08:58 4f13b53be9ddef3e9ba281546aef1c544805282971f324291a1dc91b50eeb440
[root@localhost containers]# rm -rf 4f13b53be9ddef3e9ba281546aef1c544805282971f324291a1dc91b50eeb440
systemctl restart docker

Microsoft windows vista and 7 use NCSI (Network Connectivity Status Indicator) technic:

1. NCSI performs a DNS lookup on www.msftncsi.com, then requests http://www.msftncsi.com/ncsi.txt. This file is a plain-text file and contains only the text 'Microsoft NCSI'.
2. NCSI sends a DNS lookup request for dns.msftncsi.com. This DNS address should resolve to 131.107.255.255. If the address does not match, then it is assumed that the internet connection is not functioning correctly.

And what does "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.19 (KHTML, like Gecko) Chrome/18.0.1025.5 Safari/535.19" means ?

This is the value of User-Agent, the browser identification string.

For this reason, most Web browsers use a User-Agent string value as follows:

Mozilla/[version] ([system and browser information]) [platform] ([platform details]) [extensions]. For example, Safari on the iPad has used the following:

Mozilla/5.0 (iPad; U; CPU OS 3_2_1 like Mac OS X; en-us) AppleWebKit/531.21.10 (KHTML, like Gecko) Mobile/7B405 The components of this string are as follows:

Mozilla/5.0: Previously used to indicate compatibility with the Mozilla rendering engine. (iPad; U; CPU OS 3_2_1 like Mac OS X; en-us): Details of the system in which the browser is running. AppleWebKit/531.21.10: The platform the browser uses. (KHTML, like Gecko): Browser platform details. Mobile/7B405: This is used by the browser to indicate specific enhancements that are available directly in the browser or through third parties. An example of this is Microsoft Live Meeting which registers an extension so that the Live Meeting service knows if the software is already installed, which means it can provide a streamlined experience to joining meetings.

This value will be used to identify what browser is being used by end user.

Refer

CTRL + H is actually the right answer, but the scope in which it was pressed is actually pretty important. When you have last clicked on file you're working on, you'll get a different search window - Java Search:

Whereas when you select directory on Package Explorer and then press Ctrl + H (or choose Search -> File.. from main menu), you get the desired window - File Search:

The new version 3.0 of the jQuery Bubble Popup plugin supports jQuery v.1.7.2, currently the latest and stable version of the most famous javascript library.

The most interesting feature of the 3.0 version is that You can use together jQuery & Bubble Popup plugin with any other libraries and javascript frameworks like Script.aculo.us, Mootols or Prototype because the plugin is completely encapsulated to prevent incompatibility problems;

jQuery Bubble Popup was tested and supports a lot of known and “unknown” browsers; see the documentation for the complete list.

Like previous versions, jQuery Bubble Popup plugin continues to be released under the MIT license; You are free to use jQuery Bubble Popup in commercial or personal projects as long as the copyright header is left intact.

download the latest version or visit live demos and tutorials at http://www.maxvergelli.com/jquery-bubble-popup/

One way is to use the code Gamlet posted in his answer:

• Save it as curl.php

• Then in your file:

  require 'curl.php';
  
  $photo="https://graph.facebook.com/me/picture?access_token=" . $session['access_token'];
  $sample = new sfFacebookPhoto;
  $thephotoURL = $sample->getRealUrl($photo);
  echo $thephotoURL;
  

I thought I would post this, because it took me a bit of time to figure out the particulars... Even though profile pictures are public, you still need to have an access token in there to get it when you curl it.

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.

Change the line where you print the output to:

printf("\nmaximum of %d and %d is = %d",a,b,c);

See the docs here

Here What i did in Django 2.0. Set First MEDIA_ROOT an MEDIA_URL in setting.py

MEDIA_ROOT = os.path.join(BASE_DIR, 'data/') # 'data' is my media folder
MEDIA_URL = '/media/'

Then Enable the media context_processors in TEMPLATE_CONTEXT_PROCESSORS by adding

TEMPLATES = [
{
    'BACKEND': 'django.template.backends.django.DjangoTemplates',
    'DIRS': [],
    'APP_DIRS': True,
    'OPTIONS': {
        'context_processors': [
            #here add your context Processors
            'django.template.context_processors.media',
        ],
    },
},
]

Your media context processor is enabled, Now every RequestContext will contain a variable MEDIA_URL.

Now you can access this in your template_name.html

<p><img src="{{ MEDIA_URL }}/image_001.jpeg"/></p>

You can keep track the position of the current selected element:

    OnItemClickListener listViewOnItemClick = new OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView<?> adapter, View arg1, int position, long id) {
                mSelectedItem = position;
                mAdapter.notifyDataSetChanged();
        }
    };

And override the getView method of your adapter:

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        final View view = View.inflate(context, R.layout.item_list, null);

        if (position == mSelectedItem) {
            // set your color
        }

        return view;
    }

For me it did the trick.

You can index Dictionary, you didn't need 'get'.

Dictionary<string,string> example = new Dictionary<string,string>();
...
example.Add("hello","world");
...
Console.Writeline(example["hello"]);

An efficient way to test/get values is TryGetValue (thanx to Earwicker):

if (otherExample.TryGetValue("key", out value))
{
    otherExample["key"] = value + 1;
}

With this method you can fast and exception-less get values (if present).

Resources:

Dictionary-Keys

Try Get Value

You basically need a helper method to read a stream into memory. This works pretty well:

public static byte[] readFully(InputStream stream) throws IOException
{
    byte[] buffer = new byte[8192];
    ByteArrayOutputStream baos = new ByteArrayOutputStream();

    int bytesRead;
    while ((bytesRead = stream.read(buffer)) != -1)
    {
        baos.write(buffer, 0, bytesRead);
    }
    return baos.toByteArray();
}

Then you'd call it with:

public static byte[] loadFile(String sourcePath) throws IOException
{
    InputStream inputStream = null;
    try 
    {
        inputStream = new FileInputStream(sourcePath);
        return readFully(inputStream);
    } 
    finally
    {
        if (inputStream != null)
        {
            inputStream.close();
        }
    }
}

Don't mix up text and binary data - it only leads to tears.

Why not do it simply by picking eight different numbers from 0 to Horse.count and use that to get your horses?

offsets = (0...Horse.count).to_a.sample(8)
@suggested_horses = offsets.map{|i| Horse.first(:offset => i) }

This has the added advantage that it won't cause an infinite loop if you happen to have less than 8 horses in your database.

Note: Array#sample is new to 1.9 (and coming in 1.8.8), so either upgrade your Ruby, require 'backports' or use something like shuffle.first(n).

Usually you restore your state in onCreate(). It is possible to restore it in onRestoreInstanceState() as well, but not very common. (onRestoreInstanceState() is called after onStart(), whereas onCreate() is called before onStart().

Use the put methods to store values in onSaveInstanceState():

protected void onSaveInstanceState(Bundle icicle) {
  super.onSaveInstanceState(icicle);
  icicle.putLong("param", value);
}

And restore the values in onCreate():

public void onCreate(Bundle icicle) {
  if (icicle != null){
    value = icicle.getLong("param");
  }
}

"fb://page/ does not work with newer versions of the FB app. You should use fb://facewebmodal/f?href= for newer versions.

This is a full fledged working code currently live in one of my apps:

public static String FACEBOOK_URL = "https://www.facebook.com/YourPageName";
public static String FACEBOOK_PAGE_ID = "YourPageName";

//method to get the right URL to use in the intent
public String getFacebookPageURL(Context context) {
        PackageManager packageManager = context.getPackageManager();
        try {
            int versionCode = packageManager.getPackageInfo("com.facebook.katana", 0).versionCode;
            if (versionCode >= 3002850) { //newer versions of fb app
                return "fb://facewebmodal/f?href=" + FACEBOOK_URL;
            } else { //older versions of fb app
                return "fb://page/" + FACEBOOK_PAGE_ID;
            }
        } catch (PackageManager.NameNotFoundException e) {
            return FACEBOOK_URL; //normal web url
        }
    }

This method will return the correct url for app if installed or web url if app is not installed.

Then start an intent as follows:

Intent facebookIntent = new Intent(Intent.ACTION_VIEW);
String facebookUrl = getFacebookPageURL(this);
facebookIntent.setData(Uri.parse(facebookUrl));
startActivity(facebookIntent);

That's all you need.

if it is a new repo you've cloned, it may still be empty, in which case:

git push -u origin master

should likely sort it out.

(did in my case. not sure this is the same issue, thought i should post this just incase. might help others.)

In the POSIX standard, which /bin/sh is supposed to respect, the command is . (a single dot), not source. The source command is a csh-ism that has been pulled into bash.

Try

. $env_name/bin/activate

Or if you must have non-POSIX bash-isms in your code, use #!/bin/bash.

This is how you implement a strtok() like function (taken from a BSD licensed string processing library for C, called zString).

Below function differs from the standard strtok() in the way it recognizes consecutive delimiters, whereas the standard strtok() does not.

char *zstring_strtok(char *str, const char *delim) {
    static char *static_str=0;      /* var to store last address */
    int index=0, strlength=0;       /* integers for indexes */
    int found = 0;                  /* check if delim is found */

    /* delimiter cannot be NULL
    * if no more char left, return NULL as well
    */
    if (delim==0 || (str == 0 && static_str == 0))
        return 0;

    if (str == 0)
        str = static_str;

    /* get length of string */
    while(str[strlength])
        strlength++;

    /* find the first occurance of delim */
    for (index=0;index<strlength;index++)
        if (str[index]==delim[0]) {
            found=1;
            break;
        }

    /* if delim is not contained in str, return str */
    if (!found) {
        static_str = 0;
        return str;
    }

    /* check for consecutive delimiters
    *if first char is delim, return delim
    */
    if (str[0]==delim[0]) {
        static_str = (str + 1);
        return (char *)delim;
    }

    /* terminate the string
    * this assignmetn requires char[], so str has to
    * be char[] rather than *char
    */
    str[index] = '\0';

    /* save the rest of the string */
    if ((str + index + 1)!=0)
        static_str = (str + index + 1);
    else
        static_str = 0;

        return str;
}

Below is an example code that demonstrates the usage

  Example Usage
      char str[] = "A,B,,,C";
      printf("1 %s\n",zstring_strtok(s,","));
      printf("2 %s\n",zstring_strtok(NULL,","));
      printf("3 %s\n",zstring_strtok(NULL,","));
      printf("4 %s\n",zstring_strtok(NULL,","));
      printf("5 %s\n",zstring_strtok(NULL,","));
      printf("6 %s\n",zstring_strtok(NULL,","));

  Example Output
      1 A
      2 B
      3 ,
      4 ,
      5 C
      6 (null)

You can even use a while loop (standard library's strtok() would give the same result here)

char s[]="some text here;
do {
    printf("%s\n",zstring_strtok(s," "));
} while(zstring_strtok(NULL," "));

Try this to Change content of div using jQuery.

See more @ Change content of div using jQuery

$(document).ready(function(){
    $("#Textarea").keyup(function(){
        // Getting the current value of textarea
        var currentText = $(this).val();

        // Setting the Div content
        $(".output").text(currentText);
    });
});

I was having the exact same problem. In my case none of the above solutions worked, what did it for me was to add the following:

app.UseCors(builder => builder
.AllowAnyOrigin()
.AllowAnyMethod()
.AllowAnyHeader()

So basically, allow everything.

Bear in mind that this is safe only if running locally.

just put Wait() to wait until task completed

GetInputReportViaInterruptTransfer().Wait();

MySQL says:

All integer types can have an optional (nonstandard) attribute UNSIGNED. Unsigned type can be used to permit only nonnegative numbers in a column or when you need a larger upper numeric range for the column. For example, if an INT column is UNSIGNED, the size of the column's range is the same but its endpoints shift from -2147483648 and 2147483647 up to 0 and 4294967295.

When do I use it ?

Ask yourself this question: Will this field ever contain a negative value?
If the answer is no, then you want an UNSIGNED data type.

A common mistake is to use a primary key that is an auto-increment INT starting at zero, yet the type is SIGNED, in that case you’ll never touch any of the negative numbers and you are reducing the range of possible id's to half.

You can also use MDIParent-child form. Set the child form's parent as MDI Parent

Eg

child.MdiParent = parentForm;
child.Show();

In this case just 1 form will be shown and the child forms will come inside the parent. Hope this helps

if anyone has a problem on Mac, can try this

sudo pip install --upgrade matplotlib --ignore-installed six

On non-simple http requests your browser will send a "preflight" request (an OPTIONS method request) first in order to determine what the site in question considers safe information to send (see here for the cross-origin policy spec about this). One of the relevant headers that the host can set in a preflight response is Access-Control-Allow-Headers. If any of the headers you want to send were not listed in either the spec's list of whitelisted headers or the server's preflight response, then the browser will refuse to send your request.

In your case, you're trying to send an Authorization header, which is not considered one of the universally safe to send headers. The browser then sends a preflight request to ask the server whether it should send that header. The server is either sending an empty Access-Control-Allow-Headers header (which is considered to mean "don't allow any extra headers") or it's sending a header which doesn't include Authorization in its list of allowed headers. Because of this, the browser is not going to send your request and instead chooses to notify you by throwing an error.

Any Javascript workaround you find that lets you send this request anyways should be considered a bug as it is against the cross origin request policy your browser is trying to enforce for your own safety.

tl;dr - If you'd like to send Authorization headers, your server had better be configured to allow it. Set your server up so it responds to an OPTIONS request at that url with an Access-Control-Allow-Headers: Authorization header.

There is issue of 31st and 28th Feb with getDate() I use this function getTime and 24*60*60*1000 = 86400000

var dateWith31 = new Date("2017-08-31");_x000D_
var dateWith29 = new Date("2016-02-29");_x000D_
_x000D_
var amountToIncreaseWith = 1; //Edit this number to required input_x000D_
_x000D_
console.log(incrementDate(dateWith31,amountToIncreaseWith));_x000D_
console.log(incrementDate(dateWith29,amountToIncreaseWith));_x000D_
_x000D_
function incrementDate(dateInput,increment) {_x000D_
        var dateFormatTotime = new Date(dateInput);_x000D_
        var increasedDate = new Date(dateFormatTotime.getTime() +(increment *86400000));_x000D_
        return increasedDate;_x000D_
    }

Another option is to use "localStorage". You can easealy request the value with javascript in another page.

On the first page, you use the following snippet of javascript code to set the localStorage:

<script>    
   localStorage.setItem("serialNumber", "abc123def456");
</script>

On the second page, you can retrieve the value with the following javascript code snippet:

<script>    
   console.log(localStorage.getItem("serialNumber"));
</script>

On Google Chrome You can vizualize the values pressing F12 > Application > Local Storage.

Source: https://www.w3schools.com/jsref/prop_win_localstorage.asp

Try to set a longer max_execution_time:

<IfModule mod_php5.c>
    php_value max_execution_time 300
</IfModule>

<IfModule mod_php7.c>
    php_value max_execution_time 300
</IfModule>

Seriously? You folks have never used

where (t.MyTableId == 1 || t.MyTableId == 2 || t.MyTableId == 3)

Div is a block element and span is an inline element and its width depends upon the content of it self where div does not

I am not sure I understand the question properly here ... Trying to "read" the value of an "undefined" variable name will trigger a NameError. (see here, that Python has "names", not variables...).

== EDIT ==

As pointed out in the comments by delnan, the code below is not robust and will break in numerous situations ...

Nevertheless, if your variable "exists", but has some sort of dummy value, like None, the following would work :

>>> my_possibly_None_value = None
>>> myval = my_possibly_None_value or 5
>>> myval
5
>>> my_possibly_None_value = 12
>>> myval = my_possibly_None_value or 5
>>> myval
12
>>> 

(see this paragraph about Truth Values)

Yes, it is possible to run PowerShell through the run window. However, it would be burdensome and you will need to enter in the password for computer. This is similar to how you will need to set up when you run cmd:

runas /user:(ComputerName)\(local admin) powershell.exe

So a basic example would be:

runas /user:MyLaptop\[email protected]  powershell.exe

You can find more information on this subject in Runas.

However, you could also do one more thing :

• 1: `Windows+R`
• 2: type: `powershell`
• 3: type: `Start-Process powershell -verb runAs`

then your system will execute the elevated powershell.

Something like this might be the easiest way.

<a href="mailto:?subject=I wanted you to see this site&amp;body=Check out this site http://www.website.com."
   title="Share by Email">
  <img src="http://png-2.findicons.com/files/icons/573/must_have/48/mail.png">
</a>

You could find another email image and add that if you wanted.

In the code bellow, I read the interests from the CLI until the user hits enter and I'm using Readline:

interests := make([]string, 1)
r := bufio.NewReader(os.Stdin)
for true {
    fmt.Print("Give me an interest:")
    t, _, _ := r.ReadLine()
    interests = append(interests, string(t))
    if len(t) == 0 {
        break;
    }
}
fmt.Println(interests)

Restarting the adb server, Eclipse, and device did the trick for me.

C:\Android\android-sdk\platform-tools>adb kill-server

C:\Android\android-sdk\platform-tools>adb start-server
* daemon not running. starting it now on port 5037 *
* daemon started successfully *

I had the same problem as mentioned on this question.

Usually this region should contains the constructors of the class

Don't delete it: for just one commit git cherry-pick is enough.

But if you had several commits on the wrong branch, that is where git rebase --onto shines:

Suppose you have this:

 x--x--x--x <-- master
           \
            -y--y--m--m <- y branch, with commits which should have been on master

, then you can mark master and move it where you would want to be:

 git checkout master
 git branch tmp
 git checkout y
 git branch -f master

 x--x--x--x <-- tmp
           \
            -y--y--m--m <- y branch, master branch

, reset y branch where it should have been:

 git checkout y
 git reset --hard HEAD~2 # ~1 in your case, 
                         # or ~n, n = number of commits to cancel

 x--x--x--x <-- tmp
           \
            -y--y--m--m <- master branch
                ^
                |
                -- y branch

, and finally move your commits (reapply them, making actually new commits)

 git rebase --onto tmp y master
 git branch -D tmp


 x--x--x--x--m'--m' <-- master
           \
            -y--y <- y branch

To make the change for one session, use this command:

:set tabstop=4

To make the change permanent, add it to ~/.vimrc or ~/.vim/vimrc:

set tabstop=4

This will affect all files, not just css. To only affect css files:

autocmd Filetype css setlocal tabstop=4

as stated in Michal's answer.

That's a really insecure idea, but: Using the passwd command from within a shell script

This command is for the PERL fans :

ls -1 | perl -l40pe0

Here 40 is the octal ascii code for space.

-p will process line by line and print

-l will take care of replacing the trailing \n with the ascii character we provide.

-e is to inform PERL we are doing command line execution.

0 means that there is actually no command to execute.

perl -e0 is same as perl -e ' '

To find the exact center of the map you'll need to translate the lat/lon coordinates into pixel coordinates and then find the pixel center and convert that back into lat/lon coordinates.

You might not notice or mind the drift depending how far north or south of the equator you are. You can see the drift by doing map.setCenter(map.getBounds().getCenter()) inside of a setInterval, the drift will slowly disappear as it approaches the equator.

You can use the following to translate between lat/lon and pixel coordinates. The pixel coordinates are based on a plane of the entire world fully zoomed in, but you can then find the center of that and switch it back into lat/lon.

   var HALF_WORLD_CIRCUMFERENCE = 268435456; // in pixels at zoom level 21
   var WORLD_RADIUS = HALF_WORLD_CIRCUMFERENCE / Math.PI;

   function _latToY ( lat ) {
      var sinLat = Math.sin( _toRadians( lat ) );
      return HALF_WORLD_CIRCUMFERENCE - WORLD_RADIUS * Math.log( ( 1 + sinLat ) / ( 1 - sinLat ) ) / 2;
   }

   function _lonToX ( lon ) {
      return HALF_WORLD_CIRCUMFERENCE + WORLD_RADIUS * _toRadians( lon );
   }

   function _xToLon ( x ) {
      return _toDegrees( ( x - HALF_WORLD_CIRCUMFERENCE ) / WORLD_RADIUS );
   }

   function _yToLat ( y ) {
      return _toDegrees( Math.PI / 2 - 2 * Math.atan( Math.exp( ( y - HALF_WORLD_CIRCUMFERENCE ) / WORLD_RADIUS ) ) );
   }

   function _toRadians ( degrees ) {
      return degrees * Math.PI / 180;
   }

   function _toDegrees ( radians ) {
      return radians * 180 / Math.PI;
   }

I've written a few methods for convert by Gson library and java 1.8 .
thay are daynamic model for convert.

string to object

object to string

List to string

string to List

HashMap to String

String to JsonObj

//saeedmpt 
public static String convertMapToString(Map<String, String> data) {
    //convert Map  to String
    return new GsonBuilder().setPrettyPrinting().create().toJson(data);
}
public static <T> List<T> convertStringToList(String strListObj) {
    //convert string json to object List
    return new Gson().fromJson(strListObj, new TypeToken<List<Object>>() {
    }.getType());
}
public static <T> T convertStringToObj(String strObj, Class<T> classOfT) {
    //convert string json to object
    return new Gson().fromJson(strObj, (Type) classOfT);
}

public static JsonObject convertStringToJsonObj(String strObj) {
    //convert string json to object
    return new Gson().fromJson(strObj, JsonObject.class);
}

public static <T> String convertListObjToString(List<T> listObj) {
    //convert object list to string json for
    return new Gson().toJson(listObj, new TypeToken<List<T>>() {
    }.getType());
}

public static String convertObjToString(Object clsObj) {
    //convert object  to string json
    String jsonSender = new Gson().toJson(clsObj, new TypeToken<Object>() {
    }.getType());
    return jsonSender;
}

If you're using rails you can also use in_groups_of:

foo.in_groups_of(3)

For Me i got same issue i resolved like this changed format:'dd/mm/yy' to dateFormat: 'dd/mm/yy'

Add:

using System.Linq;

to the top of your file.

And then:

Car[] carList = ...
var carMake = 
    from item in carList
    where item.Model == "bmw" 
    select item.Make;

or if you prefer the fluent syntax:

var carMake = carList
    .Where(item => item.Model == "bmw")
    .Select(item => item.Make);

Things to pay attention to:

• The usage of item.Make in the select clause instead if s.Make as in your code.
• You have a whitespace between item and .Model in your where clause

I use Notepad++ and got this error.

In Notepad++ you will see that both the tab and the four spaces are the same, but when you copy your code to Python IDLE you would see the difference and the line with a tab would have more space before it than the others.

To solve the problem, I just deleted the tab before the line then added four spaces.

You can use xlpython package that requires xlrd only. Find it here https://pypi.python.org/pypi/xlpython and its documentation here https://github.com/morfat/xlpython

I've had this happen on VS after I changed the file's line endings. Changing them back to Windows CR LF fixed the issue.

Here is an option I found to export to Excel (can be modified for CSV I believe)

insert into OPENROWSET('Microsoft.Jet.OLEDB.4.0', 
'Excel 8.0;Database=D:\testing.xls;', 
'SELECT * FROM [SheetName$]') select * from SQLServerTable

I've meet the probleme recently. The trouble is coming when the filename lenght is greather than 20 characters. So the bypass is to change your filename length, but the trick is also a good one.

$.ajaxSetup({async: false}); // passage en mode synchrone
$.ajax({
   url: pathpays,
   success: function(data) {
      //debug(data);
      $(data).find("a:contains(.png),a:contains(.jpg)").each(function() {
         var image = $(this).attr("href");
         // will loop through
         debug("Found a file: " + image);
         text +=  '<img class="arrondie" src="' + pathpays + image + '" />';
      });
      text = text + '</div>';
      //debug(text);
   }
});

After more investigation the trouble is coming from ajax request: Put an eye to the html code returned by ajax:

<a href="Paris-Palais-de-la-cite%20-%20Copie.jpg">Paris-Palais-de-la-c..&gt;</a>
</td>
<td align="right">2015-09-05 09:50 </td>
<td align="right">4.3K</td>
<td>&nbsp;</td>
</tr>

As you can see the filename is splitted after the character 20, so the $(data).find("a:contains(.png)) is not able to find the correct extention.

But if you check the value of the href parameter it contents the fullname of the file.

I dont know if I can to ask to ajax to return the full filename in the text area?

Hope to be clear

I've found the right test to gather all files:

$(data).find("[href$='.jpg'],[href$='.png']").each(function() {  
var image = $(this).attr("href");

You can do with little Trick: Suppose you have requirement of : ( Width,Height )

Wrap_content ,Wrap_content :

 //use this as child
 Wrap(
  children: <Widget>[*your_child*])

Match_parent,Match_parent:

 //use this as child
Container(
        height: double.infinity,
    width: double.infinity,child:*your_child*)

Match_parent,Wrap_content :

 //use this as child
Row(
  mainAxisSize: MainAxisSize.max,
  children: <Widget>[*your_child*],
);

Wrap_content ,Match_parent:

 //use this as child
Column(
  mainAxisSize: MainAxisSize.max,
  children: <Widget>[your_child],
);

import csv

dict = {"Key Header":"Value Header", "key1":"value1", "key2":"value2"}

with open("test.csv", "w") as f:
    writer = csv.writer(f)
    for i in dict:
      writer.writerow([i, dict[i]])
f.close() 

You may use the C atoi function ( in a try / catch clause because the conversion isn't always possible) But there's nothing in the MFC classes to do it better.

jQuery shouldn't be required. You could try adding the CSS:

body    {overflow-y:scroll;}

This works across the latest browsers, even IE6.

You can use these kind of programs to emulate an apache web server and run PHP on your computer:

http://www.wampserver.com/en/

http://www.apachefriends.org/en/xampp.html

In TypeScript you can use import to load local JSON files. For example loading a font.json:

import * as fontJson from '../../public/fonts/font_name.json';

This requires a tsconfig flag --resolveJsonModule:

// tsconfig.json

{
    "compilerOptions": {
        "module": "commonjs",
        "resolveJsonModule": true,
        "esModuleInterop": true
    }
}

For more information see the release notes of typescript: https://www.typescriptlang.org/docs/handbook/release-notes/typescript-2-9.html

Here is a client side "sequential guid" solution.

http://www.pinvoke.net/default.aspx/rpcrt4.uuidcreate

using System;
using System.Runtime.InteropServices;


namespace MyCompany.MyTechnology.Framework.CrossDomain.GuidExtend
{
    public static class Guid
    {

        /*

        Original Reference for Code:
        http://www.pinvoke.net/default.aspx/rpcrt4/UuidCreateSequential.html

        */


        [DllImport("rpcrt4.dll", SetLastError = true)]
        static extern int UuidCreateSequential(out System.Guid guid);

        public static System.Guid NewGuid()
        {
            return CreateSequentialUuid();
        }


        public static System.Guid CreateSequentialUuid()
        {
            const int RPC_S_OK = 0;
            System.Guid g;
            int hr = UuidCreateSequential(out g);
            if (hr != RPC_S_OK)
                throw new ApplicationException("UuidCreateSequential failed: " + hr);
            return g;
        }


        /*

        Text From URL above:

        UuidCreateSequential (rpcrt4)

        Type a page name and press Enter. You'll jump to the page if it exists, or you can create it if it doesn't.
        To create a page in a module other than rpcrt4, prefix the name with the module name and a period.
        . Summary
        Creates a new UUID 
        C# Signature:
        [DllImport("rpcrt4.dll", SetLastError=true)]
        static extern int UuidCreateSequential(out Guid guid);


        VB Signature:
        Declare Function UuidCreateSequential Lib "rpcrt4.dll" (ByRef id As Guid) As Integer


        User-Defined Types:
        None.

        Notes:
        Microsoft changed the UuidCreate function so it no longer uses the machine's MAC address as part of the UUID. Since CoCreateGuid calls UuidCreate to get its GUID, its output also changed. If you still like the GUIDs to be generated in sequential order (helpful for keeping a related group of GUIDs together in the system registry), you can use the UuidCreateSequential function.

        CoCreateGuid generates random-looking GUIDs like these:

        92E60A8A-2A99-4F53-9A71-AC69BD7E4D75
        BB88FD63-DAC2-4B15-8ADF-1D502E64B92F
        28F8800C-C804-4F0F-B6F1-24BFC4D4EE80
        EBD133A6-6CF3-4ADA-B723-A8177B70D268
        B10A35C0-F012-4EC1-9D24-3CC91D2B7122



        UuidCreateSequential generates sequential GUIDs like these:

        19F287B4-8830-11D9-8BFC-000CF1ADC5B7
        19F287B5-8830-11D9-8BFC-000CF1ADC5B7
        19F287B6-8830-11D9-8BFC-000CF1ADC5B7
        19F287B7-8830-11D9-8BFC-000CF1ADC5B7
        19F287B8-8830-11D9-8BFC-000CF1ADC5B7



        Here is a summary of the differences in the output of UuidCreateSequential:

        The last six bytes reveal your MAC address 
        Several GUIDs generated in a row are sequential 
        Tips & Tricks:
        Please add some!

        Sample Code in C#:
        static Guid UuidCreateSequential()
        {
           const int RPC_S_OK = 0;
           Guid g;
           int hr = UuidCreateSequential(out g);
           if (hr != RPC_S_OK)
             throw new ApplicationException
               ("UuidCreateSequential failed: " + hr);
           return g;
        }



        Sample Code in VB:
        Sub Main()
           Dim myId As Guid
           Dim code As Integer
           code = UuidCreateSequential(myId)
           If code <> 0 Then
             Console.WriteLine("UuidCreateSequential failed: {0}", code)
           Else
             Console.WriteLine(myId)
           End If
        End Sub




        */








    }
}

Keywords: CreateSequentialUUID SequentialUUID

Another way of doing so is:

while i<len(your_list):
    if #condition :
        del your_list[i]
    else:
        i+=1

So, you delete the elements side by side while checking

The accepted answer doesn't seem to work if you unplug the network cable. Or the server crashes. Or your router crashes. Or if you forget to pay your internet bill. Set the TCP keep-alive options for better reliability.

public static class SocketExtensions
{
    public static void SetSocketKeepAliveValues(this Socket instance, int KeepAliveTime, int KeepAliveInterval)
    {
        //KeepAliveTime: default value is 2hr
        //KeepAliveInterval: default value is 1s and Detect 5 times

        //the native structure
        //struct tcp_keepalive {
        //ULONG onoff;
        //ULONG keepalivetime;
        //ULONG keepaliveinterval;
        //};

        int size = Marshal.SizeOf(new uint());
        byte[] inOptionValues = new byte[size * 3]; // 4 * 3 = 12
        bool OnOff = true;

        BitConverter.GetBytes((uint)(OnOff ? 1 : 0)).CopyTo(inOptionValues, 0);
        BitConverter.GetBytes((uint)KeepAliveTime).CopyTo(inOptionValues, size);
        BitConverter.GetBytes((uint)KeepAliveInterval).CopyTo(inOptionValues, size * 2);

        instance.IOControl(IOControlCode.KeepAliveValues, inOptionValues, null);
    }
}



// ...
Socket sock;
sock.SetSocketKeepAliveValues(2000, 1000);

The time value sets the timeout since data was last sent. Then it attempts to send and receive a keep-alive packet. If it fails it retries 10 times (number hardcoded since Vista AFAIK) in the interval specified before deciding the connection is dead.

So the above values would result in 2+10*1 = 12 second detection. After that any read / wrtie / poll operations should fail on the socket.

This flexbox principle also works horizontally

During calculations of flex bases and flexible lengths, auto margins are treated as 0.
Prior to alignment via justify-content and align-self, any positive free space is distributed to auto margins in that dimension.

Setting an automatic left margin for the Last Item will do the work.

.last-item {
  margin-left: auto;
}

Code Example:

.container {_x000D_
  display: flex;_x000D_
  width: 400px;_x000D_
  outline: 1px solid black;_x000D_
}_x000D_
_x000D_
p {_x000D_
  height: 50px;_x000D_
  width: 50px;_x000D_
  margin: 5px;_x000D_
  background-color: blue;_x000D_
}_x000D_
_x000D_
.last-item {_x000D_
  margin-left: auto;_x000D_
}

<div class="container">_x000D_
  <p></p>_x000D_
  <p></p>_x000D_
  <p></p>_x000D_
  <p class="last-item"></p>_x000D_
</div>

Codepen Snippet

This can be very useful for Desktop Footers.

As Envato did here with the company logo.

Codepen Snippet

for it was comming because of java version mismatch ,so I have corrected it and i am able to build the war file.hope it will help someone

    <maven.compiler.source>1.7</maven.compiler.source>
    <maven.compiler.target>1.7</maven.compiler.target>

yum install python-devel will work.

If yum doesn't work then use

apt-get install python-dev

I feel most people have pip installed already with Python. On Windows, one way to check for pip is to open Command Prompt and typing in:

python -m pip

If you get Usage and Commands instructions then you have it installed. If python was not found though, then it needs to be added to the path. Alternatively you can run the same command from within the installation directory of python.

If all is good, then this command will install BeautifulSoup easily:

python -m pip install BeautifulSoup4

Screenshot:

N' now I see I need to upgrade my pip, which I just did :)

You cannot compare String Concatenation and String.Format by the program above.

You may try this also be interchanging the position of using your String.Format and Concatenation in your code block like the below

public static void main(String[] args) throws Exception {      
  long start = System.currentTimeMillis();

  for( int i=0;i<1000000; i++){
    String s = String.format( "Hi %s; Hi to you %s",i, + i*2);
  }

  long end = System.currentTimeMillis();
  System.out.println("Format = " + ((end - start)) + " millisecond");
  start = System.currentTimeMillis();

  for( int i=0;i<1000000; i++){
    String s = "Hi " + i + "; Hi to you " + i*2;
  }

  end = System.currentTimeMillis();
  System.out.println("Concatenation = " + ((end - start)) + " millisecond") ;
}

You will be surprised to see that Format works faster here. This is since the intial objects created might not be released and there can be an issue with memory allocation and thereby the performance.

Regarding the differences between json and jsonb datatypes, it worth mentioning the official explanation:

PostgreSQL offers two types for storing JSON data: json and jsonb. To implement efficient query mechanisms for these data types, PostgreSQL also provides the jsonpath data type described in Section 8.14.6.

The json and jsonb data types accept almost identical sets of values as input. The major practical difference is one of efficiency. The json data type stores an exact copy of the input text, which processing functions must reparse on each execution; while jsonb data is stored in a decomposed binary format that makes it slightly slower to input due to added conversion overhead, but significantly faster to process, since no reparsing is needed. jsonb also supports indexing, which can be a significant advantage.

Because the json type stores an exact copy of the input text, it will preserve semantically-insignificant white space between tokens, as well as the order of keys within JSON objects. Also, if a JSON object within the value contains the same key more than once, all the key/value pairs are kept. (The processing functions consider the last value as the operative one.) By contrast, jsonb does not preserve white space, does not preserve the order of object keys, and does not keep duplicate object keys. If duplicate keys are specified in the input, only the last value is kept.

In general, most applications should prefer to store JSON data as jsonb, unless there are quite specialized needs, such as legacy assumptions about ordering of object keys.

PostgreSQL allows only one character set encoding per database. It is therefore not possible for the JSON types to conform rigidly to the JSON specification unless the database encoding is UTF8. Attempts to directly include characters that cannot be represented in the database encoding will fail; conversely, characters that can be represented in the database encoding but not in UTF8 will be allowed.

Source: https://www.postgresql.org/docs/current/datatype-json.html

We're getting errors about duplicate configuration directives on the one of our apps. After investigation it looks like it's because of this issue.

In brief, our root website is ASP.NET 3.5 (which is 2.0 with specific libraries added), and we have a subapplication that is ASP.NET 4.0.

web.config inheritance causes the ASP.NET 4.0 sub-application to inherit the web.config file of the parent ASP.NET 3.5 application.

However, the ASP.NET 4.0 application's global (or "root") web.config, which resides at C:\Windows\Microsoft.NET\Framework\v4.0.30319\Config\web.config and C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Config\web.config (depending on your bitness), already contains these config sections.

The ASP.NET 4.0 app then tries to merge together the root ASP.NET 4.0 web.config, and the parent web.config (the one for an ASP.NET 3.5 app), and runs into duplicates in the node.

The only solution I've been able to find is to remove the config sections from the parent web.config, and then either

1. Determine that you didn't need them in your root application, or if you do
2. Upgrade the parent app to ASP.NET 4.0 (so it gains access to the root web.config's configSections)

Or simply:

as.numeric(gsub("\\D", "", years))
# [1] 20  1

I found the console output of my job in the browser at the following location:

http://[Jenkins URL]/job/[Job Name]/default/[Build Number]/console

Take a look at the Cursor.Position Property. It should get you started.

private void MoveCursor()
{
   // Set the Current cursor, move the cursor's Position,
   // and set its clipping rectangle to the form. 

   this.Cursor = new Cursor(Cursor.Current.Handle);
   Cursor.Position = new Point(Cursor.Position.X - 50, Cursor.Position.Y - 50);
   Cursor.Clip = new Rectangle(this.Location, this.Size);
}

If you're using this purely to reference the function in the onclick attribute, this seems like a very bad idea. Inline events are a bad idea in general.

I would suggest the following:

function addEvent(elm, evType, fn, useCapture) {
    if (elm.addEventListener) {
        elm.addEventListener(evType, fn, useCapture);
        return true;
    }
    else if (elm.attachEvent) {
        var r = elm.attachEvent('on' + evType, fn);
        return r;
    }
    else {
        elm['on' + evType] = fn;
    }
}

handler = function(){
   showHref(el);
}

showHref = function(el) {
   alert(el.href);
}

var el = document.getElementById('linkid');

addEvent(el, 'click', handler);

If you want to call the same function from other javascript code, simulating a click to call the function is not the best way. Consider:

function doOnClick() {
   showHref(document.getElementById('linkid'));
}

You need to use the fitBounds() method.

var markers = [];//some array
var bounds = new google.maps.LatLngBounds();
for (var i = 0; i < markers.length; i++) {
 bounds.extend(markers[i]);
}

map.fitBounds(bounds);

Documentation from developers.google.com/maps/documentation/javascript:

fitBounds(bounds[, padding])

Parameters:

`bounds`:  [`LatLngBounds`][1]|[`LatLngBoundsLiteral`][1]
`padding` (optional):  number|[`Padding`][1]

Return Value: None

Sets the viewport to contain the given bounds.
Note: When the map is set to display: none, the fitBounds function reads the map's size as 0x0, and therefore does not do anything. To change the viewport while the map is hidden, set the map to visibility: hidden, thereby ensuring the map div has an actual size.

The problem was that the file access permission was wrong.

I changed the permissions of the directory and it worked.

Have you tried using the generic DeserializeObject method?

JsonConvert.DeserializeObject<MyAccount>(myjsondata);

Any missing fields in the JSON data should simply be left NULL.

UPDATE:

If the JSON string is an array, try this:

var jarray = JsonConvert.DeserializeObject<List<MyAccount>>(myjsondata);

jarray should then be a List<MyAccount>.

ANOTHER UPDATE:

The exception you're getting isn't consistent with an array of objects- I think the serializer is having problems with your Dictionary-typed accountstatusmodifiedby property.

Try excluding the accountstatusmodifiedby property from the serialization and see if that helps. If it does, you may need to represent that property differently.

Documentation: Serializing and Deserializing JSON with Json.NET

This is my understanding of what the relations are between the various "urllibs":

In the Python 2 standard library there exist two HTTP libraries side-by-side. Despite the similar name, they are unrelated: they have a different design and a different implementation.

• urllib was the original Python HTTP client, added to the standard library in Python 1.2.
• urllib2 was a more capable HTTP library, added in Python 1.6, intended to be eventually a replacement for urllib.

The Python 3 standard library has a new urllib, that is a merged/refactored/rewritten version of those two packages.

urllib3 is a third-party package. Despite the name, it is unrelated to the standard library packages, and there is no intention to include it in the standard library in the future.

Finally, requests internally uses urllib3, but it aims for an easier-to-use API.

#include <sys/types.h>
#include <sys/stat.h>

int status;
...
status = mkdir("/tmp/a/b/c", S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH);

From here. You may have to do separate mkdirs for /tmp, /tmp/a, /tmp/a/b/ and then /tmp/a/b/c because there isn't an equivalent of the -p flag in the C api. Be sure and ignore the EEXISTS errno while you're doing the upper level ones.

I think there are a few things to understand when working with API Gateway integration with Lambda.

Lambda Integration vs Lambda Proxy Integration

There used to be only Lambda Integration which requires mapping templates. I suppose this is why still seeing many examples using it.

• How to pass a querystring or route parameter to AWS Lambda from Amazon API Gateway

As of September 2017, you no longer have to configure mappings to access the request body.

• Serverless Architecture on AWS

Lambda Proxy Integration, If you enable it, API Gateway will map every request to JSON and pass it to Lambda as the event object. In the Lambda function you’ll be able to retrieve query string parameters, headers, stage variables, path parameters, request context, and the body from it.

Without enabling Lambda Proxy Integration, you’ll have to create a mapping template in the Integration Request section of API Gateway and decide how to map the HTTP request to JSON yourself. And you’d likely have to create an Integration Response mapping if you were to pass information back to the client.

Before Lambda Proxy Integration was added, users were forced to map requests and responses manually, which was a source of consternation, especially with more complex mappings.

Words need to navigate the thinking. To get the terminologies straight.

• Lambda Proxy Integration = Pass through
  Simply pass the HTTP request through to lambda.

• Lambda Integration = Template transformation
  Go through a transformation process using the Apache Velocity template and you need to write the template by yourself.

body is escaped string, not JSON

Using Lambda Proxy Integration, the body in the event of lambda is a string escaped with backslash, not a JSON.

"body": "{\"foo\":\"bar\"}" 

If tested in a JSON formatter.

Parse error on line 1:
{\"foo\":\"bar\"}
-^
Expecting 'STRING', '}', got 'undefined'

The document below is about response but it should apply to request.

• I received a "malformed Lambda proxy response" error or a 502 status code with Amazon API Gateway. How do I resolve this?

The body field, if you are returning JSON, must be converted to a string or it will cause further problems with the response. You can use JSON.stringify to handle this in Node.js functions; other runtimes will require different solutions, but the concept is the same.

For JavaScript to access it as a JSON object, need to convert it back into JSON object with json.parse in JapaScript, json.dumps in Python.

• How To Work with JSON in JavaScript

Strings are useful for transporting but you’ll want to be able to convert them back to a JSON object on the client and/or the server side.

The AWS documentation shows what to do.

if (event.body !== null && event.body !== undefined) {
    let body = JSON.parse(event.body)
    if (body.time) 
        time = body.time;
}
...
var response = {
    statusCode: responseCode,
    headers: {
        "x-custom-header" : "my custom header value"
    },
    body: JSON.stringify(responseBody)
};
console.log("response: " + JSON.stringify(response))
callback(null, response);

As a follow up to Nick Fortescue's answer, here's a more complete example of how to record from the microphone and process the resulting data:

from sys import byteorder
from array import array
from struct import pack

import pyaudio
import wave

THRESHOLD = 500
CHUNK_SIZE = 1024
FORMAT = pyaudio.paInt16
RATE = 44100

def is_silent(snd_data):
    "Returns 'True' if below the 'silent' threshold"
    return max(snd_data) < THRESHOLD

def normalize(snd_data):
    "Average the volume out"
    MAXIMUM = 16384
    times = float(MAXIMUM)/max(abs(i) for i in snd_data)

    r = array('h')
    for i in snd_data:
        r.append(int(i*times))
    return r

def trim(snd_data):
    "Trim the blank spots at the start and end"
    def _trim(snd_data):
        snd_started = False
        r = array('h')

        for i in snd_data:
            if not snd_started and abs(i)>THRESHOLD:
                snd_started = True
                r.append(i)

            elif snd_started:
                r.append(i)
        return r

    # Trim to the left
    snd_data = _trim(snd_data)

    # Trim to the right
    snd_data.reverse()
    snd_data = _trim(snd_data)
    snd_data.reverse()
    return snd_data

def add_silence(snd_data, seconds):
    "Add silence to the start and end of 'snd_data' of length 'seconds' (float)"
    silence = [0] * int(seconds * RATE)
    r = array('h', silence)
    r.extend(snd_data)
    r.extend(silence)
    return r

def record():
    """
    Record a word or words from the microphone and 
    return the data as an array of signed shorts.

    Normalizes the audio, trims silence from the 
    start and end, and pads with 0.5 seconds of 
    blank sound to make sure VLC et al can play 
    it without getting chopped off.
    """
    p = pyaudio.PyAudio()
    stream = p.open(format=FORMAT, channels=1, rate=RATE,
        input=True, output=True,
        frames_per_buffer=CHUNK_SIZE)

    num_silent = 0
    snd_started = False

    r = array('h')

    while 1:
        # little endian, signed short
        snd_data = array('h', stream.read(CHUNK_SIZE))
        if byteorder == 'big':
            snd_data.byteswap()
        r.extend(snd_data)

        silent = is_silent(snd_data)

        if silent and snd_started:
            num_silent += 1
        elif not silent and not snd_started:
            snd_started = True

        if snd_started and num_silent > 30:
            break

    sample_width = p.get_sample_size(FORMAT)
    stream.stop_stream()
    stream.close()
    p.terminate()

    r = normalize(r)
    r = trim(r)
    r = add_silence(r, 0.5)
    return sample_width, r

def record_to_file(path):
    "Records from the microphone and outputs the resulting data to 'path'"
    sample_width, data = record()
    data = pack('<' + ('h'*len(data)), *data)

    wf = wave.open(path, 'wb')
    wf.setnchannels(1)
    wf.setsampwidth(sample_width)
    wf.setframerate(RATE)
    wf.writeframes(data)
    wf.close()

if __name__ == '__main__':
    print("please speak a word into the microphone")
    record_to_file('demo.wav')
    print("done - result written to demo.wav")

I started having this issue after upgrading from Rails 5.1 to 5.2
It got solved with:

spring stop
spring binstub --all
spring start
rails s

Try using: $_SERVER['SERVER_NAME'];

I used it to echo the base url of my site to link my css.

<link href="//<?php echo $_SERVER['SERVER_NAME']; ?>/assets/css/your-stylesheet.css" rel="stylesheet" type="text/css">

Hope this helps!

try out like this

body {
   background: #fff url("!--MIZO-PRO--!") no-repeat center 15px top 15px/100px;
     }


/* 100px is the background size */

This Is Work For Me.

You Can Check It.

var script_tag = document.createElement('script');_x000D_
script_tag.setAttribute('src','https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js');_x000D_
document.head.appendChild(script_tag);_x000D_
window.onload = function() {_x000D_
    if (window.jQuery) {  _x000D_
        // jQuery is loaded  _x000D_
        alert("ADD SCRIPT TAG ON HEAD!");_x000D_
    } else {_x000D_
        // jQuery is not loaded_x000D_
        alert("DOESN'T ADD SCRIPT TAG ON HEAD");_x000D_
    }_x000D_
}

I just had this problem. Turns out the XML file (not the contents) was not encoded in utf-8, but in ISO-8859-1. You can check this on a Mac with file -I xml_filename.

I used Sublime to change the file encoding to utf-8, and lxml imported it no issues.

For those who may like brevity and modern js approach.

input.addEventListener('keydown', (e) => {if (e.keyCode == 13) doSomething()});

where input is a variable containing your input element.

If you wrote this "getElementByClassName" then you will encounter with this error "document.getElementByClass is not a function" so to overcome that error just write "getElementsByClassName". Because it should be Elements not Element.

try to use li can be more even

<ul>
 <li><a href="#one"  data-role="button" role="button">back</a></li>
 </ul>

x='buffalo'    
exec("%s = %d" % (x,2))

After that you can check it by:

print buffalo

As an output you will see: 2

Here's another way to do it in VBA.

Function ConvertToArray(ByVal value As String)
    value = StrConv(value, vbUnicode)
    ConvertToArray = Split(Left(value, Len(value) - 1), vbNullChar)
End Function
Sub example()
    Dim originalString As String
    originalString = "hi there"
    Dim myArray() As String
    myArray = ConvertToArray(originalString)
End Sub

create java application in which you define two threads namely t1 and t2, thread t1 will generate random number 0 and 1 (simulate toss a coin ). 0 means head and one means tail. the other thread t2 will do the same t1 and t2 will repeat this loop 100 times and finally your application should determine how many times t1 guesses the number generated by t2 and then display the score. for example if thread t1 guesses 20 number out of 100 then the score of t1 is 20/100 =0.2 if t1 guesses 100 numbers then it gets score 1 and so on

Wow, that was easier than I thought:

git checkout -b newbranch v1.0

You can match those three groups separately, and make sure that they all present. Also, [^\w] seems a bit too broad, but if that's what you want you might want to replace it with \W.

Simply do this:

<div ng-style="{'background-color': '{{myColorVariable}}', height: '2rem'}"></div>

replace() method will work for this. Here is the code that will help to remove character from string. lets say

j_word = 'Stringtoremove'
word = 'String'    

for letter in word:
    if j_word.find(letter) == -1:
        continue
    else:
       # remove matched character
       j_word = j_word.replace(letter, '', 1)

#Output
j_word = "toremove"

You can also install a private repository dependency via git+https://github.com/... URL by providing login credentials (login and password, or deploy token) for curl with the .netrc file:

echo "machine github.com login ei-grad password mypasswordshouldbehere" > ~/.netrc
pip install "git+https://github.com/ei-grad/my_private_repo.git#egg=my_private_repo"

I don't think that solution would work anyways because you will see some error message in your error log file.

The solution was a lot easier than what I thought.

simply, open the following path to your php5-fpm

sudo nano /etc/php5/fpm/pool.d/www.conf

or if you're the admin 'root'

nano /etc/php5/fpm/pool.d/www.conf

Then find this line and uncomment it:

listen.allowed_clients = 127.0.0.1

This solution will make you be able to use listen = 127.0.0.1:9000 in your vhost blocks

like this: fastcgi_pass 127.0.0.1:9000;

after you make the modifications, all you need is to restart or reload both Nginx and Php5-fpm

Php5-fpm

sudo service php5-fpm restart

or

sudo service php5-fpm reload

Nginx

sudo service nginx restart

or

sudo service nginx reload

From the comments:

Also comment

;listen = /var/run/php5-fpm.sock 

and add

listen = 9000

If you can't get text parsing to work using the accepted answer (e.g if your text file contains non uniform rows) then it's worth trying with Python's csv library - here's an example using a user defined Dialect:

 import csv

 csv.register_dialect('skip_space', skipinitialspace=True)
 with open(my_file, 'r') as f:
      reader=csv.reader(f , delimiter=' ', dialect='skip_space')
      for item in reader:
          print(item)

The API Doc are very clear on this.

All generators implement the interface org.hibernate.id.IdentifierGenerator. This is a very simple interface. Some applications can choose to provide their own specialized implementations, however, Hibernate provides a range of built-in implementations. The shortcut names for the built-in generators are as follows:

increment

generates identifiers of type long, short or int that are unique only when no other process is inserting data into the same table. Do not use in a cluster.

identity

supports identity columns in DB2, MySQL, MS SQL Server, Sybase and HypersonicSQL. The returned identifier is of type long, short or int.

sequence

uses a sequence in DB2, PostgreSQL, Oracle, SAP DB, McKoi or a generator in Interbase. The returned identifier is of type long, short or int

hilo

uses a hi/lo algorithm to efficiently generate identifiers of type long, short or int, given a table and column (by default hibernate_unique_key and next_hi respectively) as a source of hi values. The hi/lo algorithm generates identifiers that are unique only for a particular database.

seqhilo

uses a hi/lo algorithm to efficiently generate identifiers of type long, short or int, given a named database sequence.

uuid

uses a 128-bit UUID algorithm to generate identifiers of type string that are unique within a network (the IP address is used). The UUID is encoded as a string of 32 hexadecimal digits in length.

guid

uses a database-generated GUID string on MS SQL Server and MySQL.

native

selects identity, sequence or hilo depending upon the capabilities of the underlying database.

assigned

lets the application assign an identifier to the object before save() is called. This is the default strategy if no element is specified.

select

retrieves a primary key, assigned by a database trigger, by selecting the row by some unique key and retrieving the primary key value.

foreign

uses the identifier of another associated object. It is usually used in conjunction with a primary key association.

sequence-identity

a specialized sequence generation strategy that utilizes a database sequence for the actual value generation, but combines this with JDBC3 getGeneratedKeys to return the generated identifier value as part of the insert statement execution. This strategy is only supported on Oracle 10g drivers targeted for JDK 1.4. Comments on these insert statements are disabled due to a bug in the Oracle drivers.

If you are building a simple application with not much concurrent users, you can go for increment, identity, hilo etc.. These are simple to configure and did not need much coding inside the db.

You should choose sequence or guid depending on your database. These are safe and better because the id generation will happen inside the database.

Update: Recently we had an an issue with idendity where primitive type (int) this was fixed by using warapper type (Integer) instead.

1.) Inside the database, head to the migrations table and delete the entry of the migration related to the table you want to drop.

Migration table image example

2.) Next, delete the table related to the migration you just deleted from instruction 1.

Delete table image example

3.) Finally, do the changes you want to the migration file of the table you deleted from instruction no. 2 then run php artisan migrate to migrate the table again.

I was only losing the session which was not a string or integer but a datarow. Putting the data in a serializable object and saving that into the session worked for me.

Specify the optional selector to target what you want:

jQuery(this).parent('li').addClass('yourClass');

Or:

jQuery(this).parents('li').addClass('yourClass');

Here is an example of getting the bounds using svg.getBox(): https://gist.github.com/john-doherty/2ad94360771902b16f459f590b833d44

At the end you get numbers that you can plug into the svg to set the viewbox properly. Then use any css on the parent div and you're done.

 // get all SVG objects in the DOM
 var svgs = document.getElementsByTagName("svg");
 var svg = svgs[0],
    box = svg.getBBox(), // <- get the visual boundary required to view all children
    viewBox = [box.x, box.y, box.width, box.height].join(" ");

    // set viewable area based on value above
    svg.setAttribute("viewBox", viewBox);

My preference is for something that:

1. Lists both functions and procedures,
2. Lets me know which are which,
3. Gives the procedures' names and types and nothing else,
4. Filters results by the current database, not the current definer
5. Sorts the result

Stitching together from other answers in this thread, I end up with

select 
  name, type 
from 
  mysql.proc 
where 
  db = database() 
order by 
  type, name;

... which ends you up with results that look like this:

mysql> select name, type from mysql.proc where db = database() order by type, name;
+------------------------------+-----------+
| name                         | type      |
+------------------------------+-----------+
| get_oldest_to_scan           | FUNCTION  |
| get_language_prevalence      | PROCEDURE |
| get_top_repos_by_user        | PROCEDURE |
| get_user_language_prevalence | PROCEDURE |
+------------------------------+-----------+
4 rows in set (0.30 sec)

I think it occurs due to the missing of environment variable named HTTPPORT. Just create that environment variable as 8080 will resolve the issue. or replace HTTPPORT as 8080 in the URL.

try this, http://127.0.0.1:8080/apex/f?p=4950

I know its a long time since Jon's original answer, but I had a similar requirement to the OP.

By way of extending Jon's solution I came up with the following, which will take one or more path segments takes as many path segments that you can throw at it.

Usage

Path.combine("/Users/beardtwizzle/");
Path.combine("/", "Users", "beardtwizzle");
Path.combine(new String[] { "/", "Users", "beardtwizzle", "arrayUsage" });

Code here for others with a similar problem

public class Path {
    public static String combine(String... paths)
    {
        File file = new File(paths[0]);

        for (int i = 1; i < paths.length ; i++) {
            file = new File(file, paths[i]);
        }

        return file.getPath();
    }
}

my problem was just network connection. using VPN solved the issue.

Sometimes it's nice to be explicit (for readability) that the variable doesn't change. Here's a simple example where using final can save some possible headaches:

public void setTest(String test) {
    test = test;
}

If you forget the 'this' keyword on a setter, then the variable you want to set doesn't get set. However, if you used the final keyword on the parameter, then the bug would be caught at compile time.

after putting "Allow from all", you need to restart your xampp to apply the setting. thanks

One thing nobody's mentioned is as a very quick and temporary fix, you can view the error on the localhost of that web server.

There are two "generations" of python-docx. The initial generation ended with the 0.2.x versions and the "new" generation started at v0.3.0. The new generation is a ground-up, object-oriented rewrite of the legacy version. It has a distinct repository located here.

The opendocx() function is part of the legacy API. The documentation is for the new version. The legacy version has no documentation to speak of.

Neither reading nor writing hyperlinks are supported in the current version. That capability is on the roadmap, and the project is under active development. It turns out to be quite a broad API because Word has so much functionality. So we'll get to it, but probably not in the next month unless someone decides to focus on that aspect and contribute it. UPDATE Hyperlink support was added subsequent to this answer.

P4 is the cell I test for:

=IF(ISBLANK(P4),1,0)

Use the .length property. It is not a function.

alert($('.class').length); // alerts a nonnegative number 

We can use Jquery methods $.each()/$.grep()

var data= [];
$.each(array,function(i){if(n !== 5 && i > 4){data.push(item)}}

or

var data = $.grep(array, function( n, i ) {
  return ( n !== 5 && i > 4 );
});

use ES6 syntax:

Array.find, Array.filter, Array.forEach, Array.map

Or use Lodash https://lodash.com/docs/4.17.10#filter, Underscore https://underscorejs.org/#filter

Make sure that your ORACLE_HOME and ORACLE_SID are correct To see the current values in windows, at the command prompt type

echo %ORACLE_HOME%

Then

echo %ORACLE_SID%

If the values are not your current oracle home and SID you need to correct them. This can be done in Windows environment variables.

Check out this page for more info

In addition to the answer by @spoon16 and @Cheetah, I always set the tabstop property to False on the textbox to prevent the text from being selected by default.

Alternatively, you can also do something like this:

private void FormFoo_Load(...) {
    txtFoo.Select(0, 0);
}

or

private void FormFoo_Load(...) {
    txtFoo.SelectionLength = 0;
}

If you're using org.codehaus.jackson, this has been possible since 1.6. You can convert a JsonNode to a POJO with ObjectMapper#readValue: http://jackson.codehaus.org/1.9.4/javadoc/org/codehaus/jackson/map/ObjectMapper.html#readValue(org.codehaus.jackson.JsonNode, java.lang.Class)

    ObjectMapper mapper = new ObjectMapper();
    JsonParser jsonParser = mapper.getJsonFactory().createJsonParser("{\"foo\":\"bar\"}");
    JsonNode tree = jsonParser.readValueAsTree();
    // Do stuff to the tree
    mapper.readValue(tree, Foo.class);

Run it under a different user name, using "runas" or by scheduling it under a different user in Windows Scheduled Tasks.

Iterate through a copy of the list and add new elements to the original list.

for (String s : new ArrayList<String>(list))     
{
    list.add("u");
}

See How to make a copy of ArrayList object which is type of List?

As has been mentioned above,

select global_name from global_name;

is the way to go.

You couldn't query v$database/v$instance/v$thread because your user does not have the required permissions. You can grant them (via a DBA account) with:

grant select on v$database to <username here>;

Credentials do not work if API is not enabled. In my case the next steps were needed:

1. Go to https://console.developers.google.com/apis/library
2. Enter 'People'
3. From the result choose 'Google People API'
4. Click 'Enable'

Breaking down your code example (Explanations are under the line of code.)

import cv2

imports openCV for usage

camera = cv2.VideoCapture(0)

creates an object called camera, of type openCV video capture, using the first camera in the list of cameras connected to the computer.

for i in range(10):

tells the program to loop the following indented code 10 times

    return_value, image = camera.read()

read values from the camera object, using it's read method. it resonds with 2 values save the 2 data values into two temporary variables called "return_value" and "image"

    cv2.imwrite('opencv'+str(i)+'.png', image)

use the openCV method imwrite (that writes an image to a disk) and write an image using the data in the temporary data variable

fewer indents means that the loop has now ended...

del(camera)

deletes the camrea object, we no longer needs it.

you can what you request in many ways, one could be to replace the for loop with a while loop, (running forever, instead of 10 times), and then wait for a keypress (like answered by danidee while I was typing)

or create a much more evil service that hides in the background and captures an image everytime someone presses the keyboard...

There are 3 possible ways:

1) WidgetsBinding.instance.addPostFrameCallback((_) => yourFunc(context));

2) Future.delayed(Duration.zero, () => yourFunc(context));

3) Timer.run(() => yourFunc(context));

As for context, I needed it for use in Scaffold.of(context) after all my widgets were rendered.

But in my humble opinion, the best way to do it is this:

void main() async {
  WidgetsFlutterBinding.ensureInitialized(); //all widgets are rendered here
  await yourFunc();
  runApp( MyApp() );
}

You can use <hr> for a vertical line as well.
Set the width to 1 and the size(height) as long as you want.
I used 500 in my example(demo):

With <hr width="1" size="500">

DEMO

See the documentation events section

Depending on the version, one of the snippets below should give you the event you want, alternatively just replace "select2-selecting" with "change".

Version 4.0 +

Events are now in format: select2:selecting (instead of select2-selecting)

Thanks to snakey for the notification that this has changed as of 4.0

$('#yourselect').on("select2:selecting", function(e) { 
   // what you would like to happen
});

Version Before 4.0

$('#yourselect').on("select2-selecting", function(e) { 
   // what you would like to happen
});

Just to clarify, the documentation for select2-selecting reads:

select2-selecting Fired when a choice is being selected in the dropdown, but before any modification has been made to the selection. This event is used to allow the user to reject selection by calling event.preventDefault()

whereas change has:

change Fired when selection is changed.

So change may be more appropriate for your needs, depending on whether you want the selection to complete and then do your event, or potentially block the change.

Apparently, action was required prior to HTML5 (and # was just a stand in), but you no longer have to use it.

See The Action Attribute:

When specified with no attributes, as below, the data is sent to the same page that the form is present on:

<form>

FWIW, here is a sort method for showing which processes are using the most virt memory.

memstat | sort -k 1 -t':' -g -r | less

Sort options are set to first column, using : as column seperator, numeric sort and sort in reverse.

This post is now old, but the crypto-js, may be now the most complete javascript encryption library.

CryptoJS is a collection of cryptographic algorithms implemented in JavaScript. It includes the following cyphers: AES-128, AES-192, AES-256, DES, Triple DES, Rabbit, RC4, RC4Drop and hashers: MD5, RIPEMD-160, SHA-1, SHA-256, SHA-512, SHA-3 with 224, 256, 384, or 512 bits.

You may want to look at their Quick-start Guide which is also the reference for the following node.js port.

node-cryptojs-aes is a node.js port of crypto-js

This isn't mentioned in any of the other answers. If you want a value that orms (should) hydrate as boolean you can use

CONVERT(bit, 0) -- false CONVERT(bit, 1) -- true

This gives you a bit which is not a boolean. You cannot use that value in an if statement for example:

IF CONVERT(bit, 0)
BEGIN
    print 'Yay'
END

woudl not parse. You would still need to write

IF CONVERT(bit, 0) = 0

So its not terribly useful.

By transforming your int array into an Integer one and then using public static <T> void Arrays.sort(T[] a, Comparator<? super T> c) (the first step is only needed as I fear autoboxing may bot work on arrays).

On many popular devices the market name of the device is not available. For example, on the Samsung Galaxy S6 the value of Build.MODEL could be "SM-G920F", "SM-G920I", or "SM-G920W8".

I created a small library that gets the market (consumer friendly) name of a device. It gets the correct name for over 10,000 devices and is constantly updated. If you wish to use my library click the link below:

AndroidDeviceNames Library on Github

If you do not want to use the library above, then this is the best solution for getting a consumer friendly device name:

/** Returns the consumer friendly device name */
public static String getDeviceName() {
  String manufacturer = Build.MANUFACTURER;
  String model = Build.MODEL;
  if (model.startsWith(manufacturer)) {
    return capitalize(model);
  }
  return capitalize(manufacturer) + " " + model;
}

private static String capitalize(String str) {
  if (TextUtils.isEmpty(str)) {
    return str;
  }
  char[] arr = str.toCharArray();
  boolean capitalizeNext = true;

  StringBuilder phrase = new StringBuilder();
  for (char c : arr) {
    if (capitalizeNext && Character.isLetter(c)) {
      phrase.append(Character.toUpperCase(c));
      capitalizeNext = false;
      continue;
    } else if (Character.isWhitespace(c)) {
      capitalizeNext = true;
    }
    phrase.append(c);
  }

  return phrase.toString();
}

Example from my Verizon HTC One M8:

// using method from above
System.out.println(getDeviceName());
// Using https://github.com/jaredrummler/AndroidDeviceNames
System.out.println(DeviceName.getDeviceName());

Result:

HTC6525LVW

HTC One (M8)

Or take the .not() method

https://api.jquery.com/not/

$(".thisClass").not("#thisId").doAction();

Short Answer: Encrypt the link like youtube does, don't know how than ask youtube/google of how they do it. (Just in case you want to get straight into the point.)

I would like to point out to anyone that this is possible because youtube does it and if they can so can any other website and it isn't from the browser either because I tested it on a couple browsers such as microsoft edge and internet explorer and so there is a way to disable it and seen that people still say it...I tries looking for an answer because if youtube can than there has to be a way and the only way to see how they do it is if someone looked into the scripts of youtube which I am doing now. I also checked to see if it was a custom context menu as well and it isn't because the context menu is over flowing the inspect element and I mean like it is over it and I looked and it never creates a new class and also it is impossible to actually access inspect element with javascript so it can't be. You can tell when it double right-click a youtube video that it pops up the context menu for chrome. Besides...youtube wouldn't add that function in. I am doing research and looking through the source of youtube so I will be back if I find the answer...if anyone says you can't than, well they didn't do research like I have. The only way to download youtube videos is through a video download.

Okay...I did research and my research stays that you can disable it except there is no javascript to it...you have to be able to encrypt the links to the video for you to be able to disable it because I think any browser won't show it if it can't find it and when I opened a youtube video link it showed as this "blob:https://www.youtube.com/e5c4808e-297e-451f-80da-3e838caa1275" without quotes so it is encrypting it so it cannot be saved...you need to know php for that but like the answer you picked out of making it harder, youtube makes it the hardest of heavy encrypting it, you need to be an advance php programmer but if you don't know that than take the person you picked as best answer of making it hard to download it...but if you know php than heavy encrypt the video link so it only is able to be read on yours...I don't know how to explain how they do it but they did and there is a way. The way youtube Encrypts there videos is quite smart so if you want to know how to than just ask youtube/google of how they do it...hope this helps for you although you already picked a best answer. So encrypting the link is best in short terms.

Apart from the previous use cases, you can also use Docker Compose to create directories in case you want to make new dummy folders on docker-compose up:

    volumes:
  - .:/ftp/
  - /ftp/node_modules
  - /ftp/files

Different Environments

Typically, software will run in different environments:

• development
• testing
• staging
• production

Different Dependencies in Different Environments

The dependencies which are declared in the require section of composer.json are typically dependencies which are required for running an application or a package in

• staging
• production

environments, whereas the dependencies declared in the require-dev section are typically dependencies which are required in

• developing
• testing

environments.

For example, in addition to the packages used for actually running an application, packages might be needed for developing the software, such as:

• friendsofphp/php-cs-fixer (to detect and fix coding style issues)
• squizlabs/php_codesniffer (to detect and fix coding style issues)
• phpunit/phpunit (to drive the development using tests)
• etc.

Deployment

Now, in development and testing environments, you would typically run

$ composer install

to install both production and development dependencies.

However, in staging and production environments, you only want to install dependencies which are required for running the application, and as part of the deployment process, you would typically run

$ composer install --no-dev

to install only production dependencies.

Semantics

In other words, the sections

• require
• require-dev

indicate to composer which packages should be installed when you run

$ composer install

or

$ composer install --no-dev

That is all.

Note Development dependencies of packages your application or package depend on will never be installed

For reference, see:

• https://getcomposer.org/doc/04-schema.md#require
• https://getcomposer.org/doc/04-schema.md#require-dev

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

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

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

@echo off
Setlocal EnableDelayedExpansion
echo FOO=!FOO!

This echo will show you "FOO=BAR".

Regards

As of PostgreSQL 9.3, you can use the command pg_isready to determine the connection status of a PostgreSQL server.

From the docs:

pg_isready returns 0 to the shell if the server is accepting connections normally, 1 if the server is rejecting connections (for example during startup), 2 if there was no response to the connection attempt, and 3 if no attempt was made (for example due to invalid parameters).

You can sum the whole DataFrame and divide by the state total:

# Copying setup from Paul H answer
import numpy as np
import pandas as pd
np.random.seed(0)
df = pd.DataFrame({'state': ['CA', 'WA', 'CO', 'AZ'] * 3,
               'office_id': list(range(1, 7)) * 2,
               'sales': [np.random.randint(100000, 999999) for _ in range(12)]})
# Add a column with the sales divided by state total sales.
df['sales_ratio'] = (df / df.groupby(['state']).transform(sum))['sales']

df

Returns

    office_id   sales state  sales_ratio
0           1  405711    CA     0.193319
1           2  535829    WA     0.347072
2           3  217952    CO     0.198743
3           4  252315    AZ     0.192500
4           5  982371    CA     0.468094
5           6  459783    WA     0.297815
6           1  404137    CO     0.368519
7           2  222579    AZ     0.169814
8           3  710581    CA     0.338587
9           4  548242    WA     0.355113
10          5  474564    CO     0.432739
11          6  835831    AZ     0.637686

But note that this only works because all columns other than state are numeric, enabling summation of the entire DataFrame. For example, if office_id is character instead, you get an error:

df.office_id = df.office_id.astype(str)
df['sales_ratio'] = (df / df.groupby(['state']).transform(sum))['sales']

TypeError: unsupported operand type(s) for /: 'str' and 'str'

The benefit of doing server side validation over client side validation is that client side validation can be bypassed/manipulated:

• The end user could have javascript switched off
• The data could be sent directly to your server by someone who's not even using your site, with a custom app designed to do so
• A Javascript error on your page (caused by any number of things) could result in some, but not all, of your validation running

In short - always, always validate server-side and then consider client-side validation as an added "extra" to enhance the end user experience.

You should create a custom exception that prototypically inherits from Error. For example:

function InvalidArgumentException(message) {
    this.message = message;
    // Use V8's native method if available, otherwise fallback
    if ("captureStackTrace" in Error)
        Error.captureStackTrace(this, InvalidArgumentException);
    else
        this.stack = (new Error()).stack;
}

InvalidArgumentException.prototype = Object.create(Error.prototype);
InvalidArgumentException.prototype.name = "InvalidArgumentException";
InvalidArgumentException.prototype.constructor = InvalidArgumentException;

This is basically a simplified version of what disfated posted above with the enhancement that stack traces work on Firefox and other browsers. It satisfies the same tests that he posted:

Usage:

throw new InvalidArgumentException();
var err = new InvalidArgumentException("Not yet...");

And it will behave is expected:

err instanceof InvalidArgumentException          // -> true
err instanceof Error                             // -> true
InvalidArgumentException.prototype.isPrototypeOf(err) // -> true
Error.prototype.isPrototypeOf(err)               // -> true
err.constructor.name                             // -> InvalidArgumentException
err.name                                         // -> InvalidArgumentException
err.message                                      // -> Not yet...
err.toString()                                   // -> InvalidArgumentException: Not yet...
err.stack                                        // -> works fine!

context.getPackageManager().getInstalledApplications(PackageManager.GET_META_DATA); Should return the list of all the installed apps but in android 11 it'll only return the list of system apps. To get the list of all the applications(system+user) we need to provide an additional permission to the application i.e

<uses-permission android:name"android.permission.QUERY_ALL_PACKAGES">

<label>@Html.RadioButton("ABC", "YES")Yes</label>
<label>@Html.RadioButton("ABC", "NO")No</label>

I was facing this problem while deploying the code in Azure websites. it did worked when I deployed build from visualstudio.com and wasn't when I tried to publish the build from visual studio 2013. the main problem was CSS Minification. I totally agree with 1st response to this question. but thought of sharing solution that worked for me, may be it will help you in fixing it.

basically when we deploy through VSO it generates minification files for css, js by kicking in system.web.Optimization, but when we do publish build from VS 2013 we have to take care of the below. bundling-and-minification 1. make sure the folder structure and your bundler naming convention should be different. something like this.

bundles.Add(new StyleBundle("~/Content/materialize/mcss").Include(
                  "~/Content//materialize/css/materialize.css"));

2. add at the bottom of your bundleconfig definition

public static void RegisterBundles(BundleCollection bundles)
{
  bundles.Add(new ScriptBundle("~/bundles/jquery").Include(
             "~/Scripts/jquery-{version}.js"));

   // Code removed for clarity.
   BundleTable.EnableOptimizations = true;
}

3. make sure to add debug false in web.config (when you start local debuging VS2013 will give you a popup saying that you need to make sure to putting it back before deploying into prod. that itself explains much.

<system.web>
  <compilation debug="true" />
  <!-- Lines removed for clarity. -->
</system.web>

Looks like whatever is in your Animation Drawable definition is too much memory to decode and sequence. The idea is that it loads up all the items and make them in an array and swaps them in and out of the scene according to the timing specified for each frame.

If this all can't fit into memory, it's probably better to either do this on your own with some sort of handler or better yet just encode a movie with the specified frames at the corresponding images and play the animation through a video codec.

The example below includes scrolling behaviour if the content of the expanded centre component extends past its bounds. Also the centre component takes 100% of remaining space in the viewport.

jsfiddle here

html, body, .r_flex_container{
    height: 100%;
    display: flex;
    flex-direction: column;
    background: red;
    margin: 0;
}
.r_flex_container {
    display:flex;
    flex-flow: column nowrap;
    background-color:blue;
}

.r_flex_fixed_child {
    flex:none;
    background-color:black;
    color:white;

}
.r_flex_expand_child {
    flex:auto;
    background-color:yellow;
    overflow-y:scroll;
}

Example of html that can be used to demonstrate this behaviour

<html>
<body>
    <div class="r_flex_container">
      <div class="r_flex_fixed_child">
        <p> This is the fixed 'header' child of the flex container </p>
      </div>
      <div class="r_flex_expand_child">
            <article>this child container expands to use all of the space given to it -  but could be shared with other expanding childs in which case they would get equal space after the fixed container space is allocated. 
Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Aenean commodo ligula eget dolor. Aenean massa. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Donec quam felis, ultricies nec, pellentesque eu, pretium quis, sem. Nulla consequat massa quis enim. Donec pede justo, fringilla vel, aliquet nec, vulputate eget, arcu. In enim justo, rhoncus ut, imperdiet a, venenatis vitae, justo. Nullam dictum felis eu pede mollis pretium. Integer tincidunt. Cras dapibus. Vivamus elementum semper nisi. Aenean vulputate eleifend tellus. Aenean leo ligula, porttitor eu, consequat vitae, eleifend ac, enim. Aliquam lorem ante, dapibus in, viverra quis, feugiat a, tellus. Phasellus viverra nulla ut metus varius laoreet. Quisque rutrum. Aenean imperdiet. Etiam ultricies nisi vel augue. Curabitur ullamcorper ultricies nisi. Nam eget dui. Etiam rhoncus. Maecenas tempus, tellus eget condimentum rhoncus, sem quam semper libero, sit amet adipiscing sem neque sed ipsum. Nam quam nunc, blandit vel, luctus pulvinar, hendrerit id, lorem. Maecenas nec odio et ante tincidunt tempus. Donec vitae sapien ut libero venenatis faucibus. Nullam quis ante. Etiam sit amet orci eget eros faucibus tincidunt. Duis leo. Sed fringilla mauris sit amet nibh. Donec sodales sagittis magna. Sed consequat, leo eget bibendum sodales, augue velit cursus nunc,
            </article>
      </div>
      <div class="r_flex_fixed_child">
        this is the fixed footer child of the flex container
        asdfadsf
        <p> another line</p>
      </div>

    </div>
</body>
</html>

Given three tasks - FeedCat(), SellHouse() and BuyCar(), there are two interesting cases: either they all complete synchronously (for some reason, perhaps caching or an error), or they don't.

Let's say we have, from the question:

Task<string> DoTheThings() {
    Task<Cat> x = FeedCat();
    Task<House> y = SellHouse();
    Task<Tesla> z = BuyCar();
    // what here?
}

Now, a simple approach would be:

Task.WhenAll(x, y, z);

but ... that isn't convenient for processing the results; we'd typically want to await that:

async Task<string> DoTheThings() {
    Task<Cat> x = FeedCat();
    Task<House> y = SellHouse();
    Task<Tesla> z = BuyCar();

    await Task.WhenAll(x, y, z);
    // presumably we want to do something with the results...
    return DoWhatever(x.Result, y.Result, z.Result);
}

but this does lots of overhead and allocates various arrays (including the params Task[] array) and lists (internally). It works, but it isn't great IMO. In many ways it is simpler to use an async operation and just await each in turn:

async Task<string> DoTheThings() {
    Task<Cat> x = FeedCat();
    Task<House> y = SellHouse();
    Task<Tesla> z = BuyCar();

    // do something with the results...
    return DoWhatever(await x, await y, await z);
}

Contrary to some of the comments above, using await instead of Task.WhenAll makes no difference to how the tasks run (concurrently, sequentially, etc). At the highest level, Task.WhenAll predates good compiler support for async/await, and was useful when those things didn't exist. It is also useful when you have an arbitrary array of tasks, rather than 3 discreet tasks.

But: we still have the problem that async/await generates a lot of compiler noise for the continuation. If it is likely that the tasks might actually complete synchronously, then we can optimize this by building in a synchronous path with an asynchronous fallback:

Task<string> DoTheThings() {
    Task<Cat> x = FeedCat();
    Task<House> y = SellHouse();
    Task<Tesla> z = BuyCar();

    if(x.Status == TaskStatus.RanToCompletion &&
       y.Status == TaskStatus.RanToCompletion &&
       z.Status == TaskStatus.RanToCompletion)
        return Task.FromResult(
          DoWhatever(a.Result, b.Result, c.Result));
       // we can safely access .Result, as they are known
       // to be ran-to-completion

    return Awaited(x, y, z);
}

async Task Awaited(Task<Cat> a, Task<House> b, Task<Tesla> c) {
    return DoWhatever(await x, await y, await z);
}

This "sync path with async fallback" approach is increasingly common especially in high performance code where synchronous completions are relatively frequent. Note it won't help at all if the completion is always genuinely asynchronous.

Additional things that apply here:

1. with recent C#, a common pattern is for the async fallback method is commonly implemented as a local function:

   Task<string> DoTheThings() {
       async Task<string> Awaited(Task<Cat> a, Task<House> b, Task<Tesla> c) {
           return DoWhatever(await a, await b, await c);
       }
       Task<Cat> x = FeedCat();
       Task<House> y = SellHouse();
       Task<Tesla> z = BuyCar();
   
       if(x.Status == TaskStatus.RanToCompletion &&
          y.Status == TaskStatus.RanToCompletion &&
          z.Status == TaskStatus.RanToCompletion)
           return Task.FromResult(
             DoWhatever(a.Result, b.Result, c.Result));
          // we can safely access .Result, as they are known
          // to be ran-to-completion
   
       return Awaited(x, y, z);
   }
   

2. prefer ValueTask<T> to Task<T> if there is a good chance of things ever completely synchronously with many different return values:

   ValueTask<string> DoTheThings() {
       async ValueTask<string> Awaited(ValueTask<Cat> a, Task<House> b, Task<Tesla> c) {
           return DoWhatever(await a, await b, await c);
       }
       ValueTask<Cat> x = FeedCat();
       ValueTask<House> y = SellHouse();
       ValueTask<Tesla> z = BuyCar();
   
       if(x.IsCompletedSuccessfully &&
          y.IsCompletedSuccessfully &&
          z.IsCompletedSuccessfully)
           return new ValueTask<string>(
             DoWhatever(a.Result, b.Result, c.Result));
          // we can safely access .Result, as they are known
          // to be ran-to-completion
   
       return Awaited(x, y, z);
   }
   

3. if possible, prefer IsCompletedSuccessfully to Status == TaskStatus.RanToCompletion; this now exists in .NET Core for Task, and everywhere for ValueTask<T>

Try this ones:

private int IpToInt32(string ipAddress)
{
   return BitConverter.ToInt32(IPAddress.Parse(ipAddress).GetAddressBytes().Reverse().ToArray(), 0);
}

private string Int32ToIp(int ipAddress)
{
   return new IPAddress(BitConverter.GetBytes(ipAddress).Reverse().ToArray()).ToString();
}

Try disclose: https://github.com/pmq20/disclose

disclose essentially makes a self-extracting exe out of your Node.js project and Node.js interpreter with the following characteristics,

1. No GUI. Pure CLI.
2. No run-time dependencies
3. Supports both Windows and Unix
4. Runs slowly for the first time (extracting to a cache dir), then fast forever

Try node-compiler: https://github.com/pmq20/node-compiler

I have made a new project called node-compiler to compile your Node.js project into one single executable.

It is better than disclose in that it never runs slowly for the first time, since your source code is compiled together with Node.js interpreter, just like the standard Node.js libraries.

Additionally, it redirect file and directory requests transparently to the memory instead of to the file system at runtime. So that no source code is required to run the compiled product.

How it works: https://speakerdeck.com/pmq20/node-dot-js-compiler-compiling-your-node-dot-js-application-into-a-single-executable

Comparing with Similar Projects,

• pkg(https://github.com/zeit/pkg): Pkg hacked fs.* API's dynamically in order to access in-package files, whereas Node.js Compiler leaves them alone and instead works on a deeper level via libsquash. Pkg uses JSON to store in-package files while Node.js Compiler uses the more sophisticated and widely used SquashFS as its data structure.

• EncloseJS(http://enclosejs.com/): EncloseJS restricts access to in-package files to only five fs.* API's, whereas Node.js Compiler supports all fs.* API's. EncloseJS is proprietary licensed and charges money when used while Node.js Compiler is MIT-licensed and users are both free to use it and free to modify it.

• Nexe(https://github.com/nexe/nexe): Nexe does not support dynamic require because of its use of browserify, whereas Node.js Compiler supports all kinds of require including require.resolve.

• asar(https://github.com/electron/asar): Asar uses JSON to store files' information while Node.js Compiler uses SquashFS. Asar keeps the code archive and the executable separate while Node.js Compiler links all JavaScript source code together with the Node.js virtual machine and generates a single executable as the final product.

• AppImage(http://appimage.org/): AppImage supports only Linux with a kernel that supports SquashFS, while Node.js Compiler supports all three platforms of Linux, macOS and Windows, meanwhile without any special feature requirements from the kernel.

A Bcrypt hash can be stored in a BINARY(40) column.

BINARY(60), as the other answers suggest, is the easiest and most natural choice, but if you want to maximize storage efficiency, you can save 20 bytes by losslessly deconstructing the hash. I've documented this more thoroughly on GitHub: https://github.com/ademarre/binary-mcf

Bcrypt hashes follow a structure referred to as modular crypt format (MCF). Binary MCF (BMCF) decodes these textual hash representations to a more compact binary structure. In the case of Bcrypt, the resulting binary hash is 40 bytes.

Gumbo did a nice job of explaining the four components of a Bcrypt MCF hash:

$<id>$<cost>$<salt><digest>

Decoding to BMCF goes like this:

1. $<id>$ can be represented in 3 bits.
2. <cost>$, 04-31, can be represented in 5 bits. Put these together for 1 byte.
3. The 22-character salt is a (non-standard) base-64 representation of 128 bits. Base-64 decoding yields 16 bytes.
4. The 31-character hash digest can be base-64 decoded to 23 bytes.
5. Put it all together for 40 bytes: 1 + 16 + 23

You can read more at the link above, or examine my PHP implementation, also on GitHub.

Since pandas >= 1.1.0 we have DataFrame.compare and Series.compare.

Note: the method can only compare identically-labeled DataFrame objects, this means DataFrames with identical row and column labels.

df1 = pd.DataFrame({'A': [1, 2, 3],
                    'B': [4, 5, 6],
                    'C': [7, np.NaN, 9]})

df2 = pd.DataFrame({'A': [1, 99, 3],
                    'B': [4, 5, 81],
                    'C': [7, 8, 9]})

   A  B    C
0  1  4  7.0
1  2  5  NaN
2  3  6  9.0 

    A   B  C
0   1   4  7
1  99   5  8
2   3  81  9

df1.compare(df2)

     A          B          C      
  self other self other self other
1  2.0  99.0  NaN   NaN  NaN   8.0
2  NaN   NaN  6.0  81.0  NaN   NaN

The source code provides some basic guidance:

The order in terms of verbosity, from least to most is ERROR, WARN, INFO, DEBUG, VERBOSE. Verbose should never be compiled into an application except during development. Debug logs are compiled in but stripped at runtime. Error, warning and info logs are always kept.

For more detail, Kurtis' answer is dead on. I would just add: Don't log any personally identifiable or private information at INFO or above (WARN/ERROR). Otherwise, bug reports or anything else that includes logging may be polluted.

Not sure if this is what you're after, but it will loop through the range that you gave it and if it finds an "A" it will remove it from the cell. I'm not sure what oldStr is used for...

Private Sub foo()
Dim myString As String
RowCount = WorksheetFunction.CountA(Range("A:A"))

For i = 2 To RowCount
    myString = Trim(Cells(i, 1).Value)
    If InStr(myString, "A") > 0 Then
        Cells(i, 1).Value = Left(myString, InStr(myString, "A"))
    End If
Next
End Sub

You are looking for a simple code, like this:

    List<string> tagList = new List<string>(new[]
    {
         "A"
        ,"B"
        ,"C"
        ,"D"
        ,"E"
    });

Just delete the folder highlighted below. Depending on your Android Studio version, mine is 3.5 and reopen Android studio.

One approach is to combine the search strings into a regex pattern as in this answer.

EDIT: Since git 2.13, there is a command to save a specific path to the stash: git stash push <path>. For example:

git stash push -m welcome_cart app/views/cart/welcome.thtml

OLD ANSWER:

You can do that using git stash --patch (or git stash -p) -- you'll enter interactive mode where you'll be presented with each hunk that was changed. Use n to skip the files that you don't want to stash, y when you encounter the one that you want to stash, and q to quit and leave the remaining hunks unstashed. a will stash the shown hunk and the rest of the hunks in that file.

Not the most user-friendly approach, but it gets the work done if you really need it.

HTML

<a href="#top">Top</a>
<a href="#middle">Middle</a>
<a href="#bottom">Bottom</a>
<div id="top"><a href="top"></a>Top</div>
<div id="middle"><a href="middle"></a>Middle</div>
<div id="bottom"><a href="bottom"></a>Bottom</div>

CSS

#top,#middle,#bottom{
    height: 600px;
    width: 300px;
    background: green; 
}

Example http://jsfiddle.net/x4wDk/

I know this is an old post, but I ran into this same issue with my VMs. Log into the VM and go to Control Panel > System and Security > Windows Firewall > Allowed Apps. Then check all of the boxes next to "File and Printer Sharing" to enable file sharing. This should allow you to ping the VM. The screenshot below is from a 2016 Windows Server but the same method will work on older ones.

You can't float or set the width of an inline element. Remove display: inline; from both classes and your markup should present fine.

EDIT: You can set the width, but it will cause the element to be rendered as a block.

Outdated answer. Please use dplyr::sample_frac() or dplyr::sample_n() instead.

In my R package there is a function sample.rows just for this purpose:

install.packages('kimisc')

library(kimisc)
example(sample.rows)

smpl..> set.seed(42)

smpl..> sample.rows(data.frame(a=c(1,2,3), b=c(4,5,6),
                               row.names=c('a', 'b', 'c')), 10, replace=TRUE)
    a b
c   3 6
c.1 3 6
a   1 4
c.2 3 6
b   2 5
b.1 2 5
c.3 3 6
a.1 1 4
b.2 2 5
c.4 3 6

Enhancing sample by making it a generic S3 function was a bad idea, according to comments by Joris Meys to a previous answer.

You can do this by executing the following command:

ld --verbose | grep SEARCH_DIR | tr -s ' ;' \\012

gcc passes a few extra -L paths to the linker, which you can list with the following command:

gcc -print-search-dirs | sed '/^lib/b 1;d;:1;s,/[^/.][^/]*/\.\./,/,;t 1;s,:[^=]*=,:;,;s,;,;  ,g' | tr \; \\012

The answers suggesting to use ld.so.conf and ldconfig are not correct because they refer to the paths searched by the runtime dynamic linker (i.e. whenever a program is executed), which is not the same as the path searched by ld (i.e. whenever a program is linked).

If you are looking inside dockerfile while creating image, add this line:

RUN apk add --update yourPackageName

I am using Angular CLI 9.1.4 and all i did was just run:

ng add @angular/material

And all the angular material packages were installed and my package.json file was updated.

This is the easiest way to get that done.

You need imagesLoaded if the container have images inside. This works for responsive too.

$(document).ready(function () { 
     equalHeight('.column');
});
$(window).resize(function(){equalHeight('.column');});

function equalHeight(columnClass){
    $('.eq-height-wrap').imagesLoaded(function(){
        $('.eq-height-wrap').each(function(){  

            var maxHeight = Math.max.apply(null, $(this).find(columnClass).map(function ()
            {
                return $(this).innerHeight();
            }).get());

            $(columnClass,this).height(maxHeight);
        });
    });
}

When you COUNT(*) it takes in count column indexes, so it will be the best result. Mysql with MyISAM engine actually stores row count, it doensn't count all rows each time you try to count all rows. (based on primary key's column)

Using PHP to count rows is not very smart, because you have to send data from mysql to php. Why do it when you can achieve the same on the mysql side?

If the COUNT(*) is slow, you should run EXPLAIN on the query, and check if indexes are really used, and where should they be added.

The following is not the fastest way, but there is a case, where COUNT(*) doesn't really fit - when you start grouping results, you can run into problem, where COUNT doesn't really count all rows.

The solution is SQL_CALC_FOUND_ROWS. This is usually used when you are selecting rows but still need to know the total row count (for example, for paging). When you select data rows, just append the SQL_CALC_FOUND_ROWS keyword after SELECT:

SELECT SQL_CALC_FOUND_ROWS [needed fields or *] FROM table LIMIT 20 OFFSET 0;

After you have selected needed rows, you can get the count with this single query:

SELECT FOUND_ROWS();

FOUND_ROWS() has to be called immediately after the data selecting query.

In conclusion, everything actually comes down to how many entries you have and what is in the WHERE statement. You should really pay attention on how indexes are being used, when there are lots of rows (tens of thousands, millions, and up).

With:

• Log2J 2 2.11.2
• HttpClient 4.5.7 (elasticsearch 7.0.0 rest client)
• Using properties file to configure

One can add:

logger.httpclient.name=org.apache.http
logger.httpclient.level=info

With 'httpclient' in the above example being a logical name you choose.

(Tested on Java 11 OpenFX application.)

I ran into this myself when I wanted to make a thor command under Windows.

To avoid having that message output everytime I ran my thor application I temporarily muted warnings while loading thor:

begin
  original_verbose = $VERBOSE
  $VERBOSE = nil
  require "thor"
ensure
  $VERBOSE = original_verbose
end

That saved me from having to edit third party source files.

Recursive solution to print all items in a list:

def printItems(l):
   for i in l:
      if isinstance(i,list):
         printItems(i)
      else:
         print i


l = [['vegas','London'],['US','UK']]
printItems(l)

You can simply just pass the attribute you want without any annotations in your controller:

@RequestMapping(value = "/someUrl")
public String someMethod(String valueOne) {
 //do stuff with valueOne variable here
}

Works with GET and POST

 $('mainCheckBox').click(function(){
    if($(this).prop('checked')){
        $('Id or Class of checkbox').prop('checked', true);
    }else{
        $('Id or Class of checkbox').prop('checked', false);
    }
});

Using the toArray(IntFunction<A[]> generator) method is indeed a very elegant and safe way to convert (or more correctly, collect) a Stream into an array of the same type of the Stream.

However, if the returned array's type is not important, simply using the toArray() method is both easier and shorter. For example:

    Stream<Object> args = Stream.of(BigDecimal.ONE, "Two", 3);
    System.out.printf("%s, %s, %s!", args.toArray());

Why not just use setBackgroundColor(getResources().getColor(R.color.holo_light_green))?

Edit: If you want to have something which looks more like an Android button you are going to want to create a gradient and set it as the background. For an example of this, you can check out this question.

>>> ord("a")
97
>>> chr(97)
'a'

This code will first store the original selection on each dropdown. Then if the user changes the selection it will reset the dropdown to its original selection.

http://jsfiddle.net/4aHcD/22/

//store the original selection
$("select :selected").each(function(){
    $(this).parent().data("default", this);
});

//change the selction back to the original
$("select").change(function(e) {
    $($(this).data("default")).prop("selected", true);
});

Here's a start.. Open to suggestions/improvements.

Server

public class ChatHub : Hub
{
    public void SendChatMessage(string who, string message)
    {
        string name = Context.User.Identity.Name;
        Clients.Group(name).addChatMessage(name, message);
        Clients.Group("[email protected]").addChatMessage(name, message);
    }

    public override Task OnConnected()
    {
        string name = Context.User.Identity.Name;
        Groups.Add(Context.ConnectionId, name);

        return base.OnConnected();
    }
}

JavaScript

(Notice how addChatMessage and sendChatMessage are also methods in the server code above)

    $(function () {
    // Declare a proxy to reference the hub.
    var chat = $.connection.chatHub;
    // Create a function that the hub can call to broadcast messages.
    chat.client.addChatMessage = function (who, message) {
        // Html encode display name and message.
        var encodedName = $('<div />').text(who).html();
        var encodedMsg = $('<div />').text(message).html();
        // Add the message to the page.
        $('#chat').append('<li><strong>' + encodedName
            + '</strong>:&nbsp;&nbsp;' + encodedMsg + '</li>');
    };

    // Start the connection.
    $.connection.hub.start().done(function () {
        $('#sendmessage').click(function () {
            // Call the Send method on the hub.
            chat.server.sendChatMessage($('#displayname').val(), $('#message').val());
            // Clear text box and reset focus for next comment.
            $('#message').val('').focus();
        });
    });
});

Testing

The original question hinted that it would be nice to be able to filter all the properties based on a prefix. I have just confirmed that this works as of Spring Boot 2.1.1.RELEASE, for Properties or Map<String,String>. I'm sure it's worked for while now. Interestingly, it does not work without the prefix = qualification, i.e. I do not know how to get the entire environment loaded into a map. As I said, this might actually be what OP wanted to begin with. The prefix and the following '.' will be stripped off, which might or might not be what one wants:

@ConfigurationProperties(prefix = "abc")
@Bean
public Properties getAsProperties() {
    return new Properties();
}

@Bean
public MyService createService() {
    Properties properties = getAsProperties();
    return new MyService(properties);
}

Postscript: It is indeed possible, and shamefully easy, to get the entire environment. I don't know how this escaped me:

@ConfigurationProperties
@Bean
public Properties getProperties() {
    return new Properties();
}

Just in case you want a new array you can use sample:

import random
new_array = random.sample( array, len(array) )

Use display: block; margin: auto; it will center the div

@maciej-cygan described the process well, however in order to find your java path:

$ which java

it gives you the path of java binary file which is a linked file in /usr/bin directory. next:

$ cd /usr/bin/ && ls -la | grep java

find the pointed location which is something as follows (for me):

then cd to the pointed directory to find the real home directory for Java. next:

$ ls -la | grep java

which is as follows in this case:

so as it's obvious in the screenshot, my Java home directory is /usr/lib/jvm/java-11-openjdk-amd64. So accordingly I need to add JAVA_HOME to my bash profile (.bashrc, .bash_profile, etc. depending on your OS) like below:

JAVA_HOME="/usr/lib/jvm/java-11-openjdk-amd64"

Here you go!

As a checkbox click = a checkbox change the following will also work:

<CheckBox Click="CheckBox_Click" />

private void CheckBox_Click(object sender, RoutedEventArgs e)
{
    // ... do some stuff
}

It has the additional advantage of working when IsThreeState="True" whereas just handling Checked and Unchecked does not.

Try:

$(document).ready(function() {
    $("a").click(function(event) {
       alert(event.target.id+" and "+$(event.target).attr('class'));
    });
});

Update 10/11/2020 to reflect the latest brew changes.

Brew already provide a command to uninstall itself (this will remove everything you installed with Homebrew):

/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/uninstall.sh)"

If you failed to run this command due to permission (like run as second user), run again with sudo

Then you can install again:

/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)"

You can use the JSON stringify method.

JSON.stringify({x: 5, y: 6}); // '{"x":5,"y":6}' or '{"y":6,"x":5}'

There is pretty good support for this across the board when it comes to browsers, as shown on http://caniuse.com/#search=JSON. You will note, however, that versions of IE earlier than 8 do not support this functionality natively.

If you wish to cater to those users as well you will need a shim. Douglas Crockford has provided his own JSON Parser on github.

If you want to give a variable that contains the minutes.

Then I think this is a great way to achieve this.

$minutes = 10;
$maxAge = new DateTime('2011-11-17 05:05');
$maxAge->modify("+{$minutes} minutes");

You Can not Use the Intent's Context for Creating Intent. So You need to use your Fragment's Parent Activity Context

Intent intent = new Intent(getActivity(),MyClass.class);

INNER JOIN gets all records that are common between both tables based on the supplied ON clause.

LEFT JOIN gets all records from the LEFT linked and the related record from the right table ,but if you have selected some columns from the RIGHT table, if there is no related records, these columns will contain NULL.

RIGHT JOIN is like the above but gets all records in the RIGHT table.

FULL JOIN gets all records from both tables and puts NULL in the columns where related records do not exist in the opposite table.

This search engine was made to solve exactly the kind of problem you're having: http://symbolhound.com/

I am the developer of SymbolHound.