Already beautiful answers are there, but I thought of adding this. Looks good to me. (Copied random numbers from @Dirk). library(scales) is needed`

set.seed(42)
hist(rnorm(500,4),xlim=c(0,10),col='skyblue',border=F)
hist(rnorm(500,6),add=T,col=scales::alpha('red',.5),border=F)

The result is...

Update: This overlapping function may also be useful to some.

hist0 <- function(...,col='skyblue',border=T) hist(...,col=col,border=border) 

I feel result from hist0 is prettier to look than hist

hist2 <- function(var1, var2,name1='',name2='',
              breaks = min(max(length(var1), length(var2)),20), 
              main0 = "", alpha0 = 0.5,grey=0,border=F,...) {    

library(scales)
  colh <- c(rgb(0, 1, 0, alpha0), rgb(1, 0, 0, alpha0))
  if(grey) colh <- c(alpha(grey(0.1,alpha0)), alpha(grey(0.9,alpha0)))

  max0 = max(var1, var2)
  min0 = min(var1, var2)

  den1_max <- hist(var1, breaks = breaks, plot = F)$density %>% max
  den2_max <- hist(var2, breaks = breaks, plot = F)$density %>% max
  den_max <- max(den2_max, den1_max)*1.2
  var1 %>% hist0(xlim = c(min0 , max0) , breaks = breaks,
                 freq = F, col = colh[1], ylim = c(0, den_max), main = main0,border=border,...)
  var2 %>% hist0(xlim = c(min0 , max0),  breaks = breaks,
                 freq = F, col = colh[2], ylim = c(0, den_max), add = T,border=border,...)
  legend(min0,den_max, legend = c(
    ifelse(nchar(name1)==0,substitute(var1) %>% deparse,name1),
    ifelse(nchar(name2)==0,substitute(var2) %>% deparse,name2),
    "Overlap"), fill = c('white','white', colh[1]), bty = "n", cex=1,ncol=3)

  legend(min0,den_max, legend = c(
    ifelse(nchar(name1)==0,substitute(var1) %>% deparse,name1),
    ifelse(nchar(name2)==0,substitute(var2) %>% deparse,name2),
    "Overlap"), fill = c(colh, colh[2]), bty = "n", cex=1,ncol=3) }

The result of

par(mar=c(3, 4, 3, 2) + 0.1) 
set.seed(100) 
hist2(rnorm(10000,2),rnorm(10000,3),breaks = 50)

is

Check the HTTP headers that chrome is sending with the request (Using browser extension or proxy) then try sending the same headers with CURL - Possibly one at a time till you figure out which header(s) makes the request work.

curl -A [user-agent] -H [headers] "http://something.com/api"

Another way to do it:

declare @week_number int = 6280 -- 2020-05-07
declare @start_weekday int = 0 -- Monday
declare @end_weekday int = 6 -- next Sunday

select 
    dateadd(week, @week_number, @start_weekday), 
    dateadd(week, @week_number, @end_weekday)

Explanation:

• @week_number is the week number since the initial calendar date '1900-01-01'. It can be computed this way: select datediff(week, 0, @wedding_date) as week_number
• @start_weekday for the week first day: 0 for Monday, -1 if Sunday
• @end_weekday for the week last day: 6 for next Sunday, 5 if Saturday
• dateadd(week, @week_number, @end_weekday): adds the given number of weeks and the given number of days into the initial calendar date '1900-01-01'

I can think of two things:

First, try loading the image with:

string strUri2 = String.Format(@"pack://application:,,,/MyAseemby;component/resources/main titles/{0}", CurrenSelection.TitleImage);
imgTitle.Source = new BitmapImage(new Uri(strUri2));

Maybe the problem is with WinForm's image resizing, if the image is stretched set Stretch on the image control to "Uniform" or "UnfirofmToFill".

Second option is that maybe the image is not aligned to the pixel grid, you can read about it on my blog at http://www.nbdtech.com/blog/archive/2008/11/20/blurred-images-in-wpf.aspx

I found the following code easy and working. Original answer is here https://www.postgresql.org/message-id/[email protected]

prova=> create table test(t text, i integer);
CREATE

prova=> insert into test values('123',123);
INSERT 64579 1

prova=> select cast(i as text),cast(t as int)from test;
text|int4
----+----
123| 123
(1 row)

hope it helps

now you can use the last 1.0.0-rc1 this way :

classpath 'com.android.tools.build:gradle:1.0.0-rc1'

This needs Gradle 2.0 if you don't have it Android Studio will ask you to download it

For those who might be in need for a solution in pug template engine and NodeJs back-end, you can use this:

If values are not boolean(IE: true or false), code below works fine:

input(type='radio' name='sex' value='male' checked=(dbResult.sex ==='male') || (dbResult.sex === 'newvalue') )
input(type='radio' name='sex' value='female' checked=(dbResult.sex ==='female) || (dbResult.sex === 'newvalue'))

If values are boolean(ie: true or false), use this instead:

input(type='radio' name='isInsurable' value='true' checked=singleModel.isInsurable || (singleModel.isInsurable === 'true') )
input(type='radio' name='isInsurable' value='false' checked=!singleModel.isInsurable || (singleModel.isInsurable === 'false'))

the reason for this || operator is to re-display new values if editing fails due to validation error and you have a logic to send back the new values to your front-end

Are you posting from a different source (so different port, or hostname)? If so, this very very recent topic I just answered might be helpful.

• Odd jQuery problem - Ajax request to a C program not quite working

The problem was the XHR Cross Domain Policy, and a useful tip on how to get around it by using a technique called JSONP. The big downside is that JSONP does not support POST requests.

I know in the original post there is no mention of JavaScript, however JSON is usually used for JavaScript so that's why I jumped to that conclusion

You could have used DISTINCT or just remove the PARTITION BY portions and use GROUP BY:

SELECT BrandId
       ,SUM(ICount)
       ,TotalICount = SUM(ICount) OVER ()    
       ,Percentage = SUM(ICount) OVER ()*1.0 / SUM(ICount) 
FROM Table 
WHERE DateId  = 20130618
GROUP BY BrandID

Not sure why you are dividing the total by the count per BrandID, if that's a mistake and you want percent of total then reverse those bits above to:

SELECT BrandId
           ,SUM(ICount)
           ,TotalICount = SUM(ICount) OVER ()    
           ,Percentage = SUM(ICount)*1.0 / SUM(ICount) OVER () 
    FROM Table 
    WHERE DateId  = 20130618
    GROUP BY BrandID

you want something like:

SELECT count(id), SUM(hour) as totHour, SUM(kind=1) as countKindOne;

Note that your second example was close, but the IF() function always takes three arguments, so it would have had to be COUNT(IF(kind=1,1,NULL)). I prefer the SUM() syntax shown above because it's concise.

It actually tells you what's wrong, but you ignored it because you didn't check the error returned from json.Marshal.

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

JSON spec doesn't support anything except strings for object keys, while javascript won't be fussy about it, it's still illegal.

You have two options:

1 Use map[string]Foo and convert the index to string (using fmt.Sprint for example):

datas := make(map[string]Foo, N)

for i := 0; i < 10; i++ {
    datas[fmt.Sprint(i)] = Foo{Number: 1, Title: "test"}
}
j, err := json.Marshal(datas)
fmt.Println(string(j), err)

2 Simply just use a slice (javascript array):

datas2 := make([]Foo, N)
for i := 0; i < 10; i++ {
    datas2[i] = Foo{Number: 1, Title: "test"}
}
j, err = json.Marshal(datas2)
fmt.Println(string(j), err)

playground

ArrayList<Integer> list = new ArrayList<>();
int number, total = 0;

for(int i = 0; i <= list.size(); i++){
    System.out.println("Enter number " + (i + 1) + " or enter -1 to end: ");
    number = input.nextInt();

    list.add(number);

    if(number == -1){
        list.remove(list.size() - 1);
        break;
    }
}
System.out.println(list.toString());

for(int i: list){
    System.out.print(i + "  ");
    total+= i;
}
System.out.println();
System.out.println("The sum of the array content is: " + total);

Basically, the term "x-bit machine" does not depend on your machine. That is why we do not need to change our processors or other hardware in order to migrate from a 32bit system to a 64bit one (or vice versa).

32bit and 64bit stands for the addressing capability of the OS running on your machine.

However, it still does not mean that a x-bit operating system is capable to address 2^x GB memory. Because the 'B' in "GB" means "byte" and not "bit". 1 byte equals 8 bits.

Actually a 32bit system can not even address 2^32/8 = 2^29 GB memory space while there should some memory be reserved to the OS.

It is something just below 3 GB.

Lets assume you created a Ubuntu VM on your local machine. It's IP address is 192.168.1.104.

You login into VM, and installed Kubernetes. Then you created a pod where nginx image running on it.

1- If you want to access this nginx pod inside your VM, you will create a ClusterIP bound to that pod for example:

$ kubectl expose deployment nginxapp --name=nginxclusterip --port=80 --target-port=8080

Then on your browser you can type ip address of nginxclusterip with port 80, like:

http://10.152.183.2:80

2- If you want to access this nginx pod from your host machine, you will need to expose your deployment with NodePort. For example:

$ kubectl expose deployment nginxapp --name=nginxnodeport --port=80 --target-port=8080 --type=NodePort

Now from your host machine you can access to nginx like:

http://192.168.1.104:31865/

In my dashboard they appear as:

Below is a diagram shows basic relationship.

For static import select the field and press Ctrl+Shift+M

You need to use a directed graph instead of a graph, i.e.

G = nx.DiGraph()

Then, create a list of the edge colors you want to use and pass those to nx.draw (as shown by @Marius).

Putting this all together, I get the image below. Still not quite the other picture you show (I don't know where your edge weights are coming from), but much closer! If you want more control of how your output graph looks (e.g. get arrowheads that look like arrows), I'd check out NetworkX with Graphviz.

*args just means that the function takes a number of arguments, generally of the same type.

Check out this section in the Python tutorial for more info.

No, because RAND_MAX is typically expanded to MAX_INT. So adding one (apparently) puts it at MIN_INT (although it should be undefined behavior as I'm told), hence the reversal of sign.

To get what you want you will need to move the +1 outside the computation:

r = ((double) rand() / (RAND_MAX)) + 1;

I create a uniqueId generator module (Typescript):

const uniqueId = ((): ((prefix: string) => string) => {
  let counter = 0;
  return (prefix: string): string => `${prefix}${++counter}`;
})();

export default uniqueId;

And use top module to generate unique ids:

import React, { FC, ReactElement } from 'react'
import uniqueId from '../../modules/uniqueId';

const Component: FC = (): ReactElement => {
  const [inputId] = useState(uniqueId('input-'));
  return (
    <label htmlFor={inputId}>
      <span>text</span>
      <input id={inputId} type="text" />
    </label>
  );
};     

in flask, with babel, I like to do this :

@app.template_filter('dt')
def _jinja2_filter_datetime(date, fmt=None):
    if fmt:
        return date.strftime(fmt)
    else:
        return date.strftime(gettext('%%m/%%d/%%Y'))

used in the template with {{mydatetimeobject|dt}}

so no with babel you can specify your various format in messages.po like this for instance :

#: app/views.py:36
#, python-format
msgid "%%m/%%d/%%Y"
msgstr "%%d/%%m/%%Y"

If you have a multi-dimensional array, none of the previously mentioned solutions will work. Here is my solution:

public function arrayValuesToInt(&$array){
  if(is_array($array)){
    foreach($array as &$arrayPiece){
      arrayValuesToInt($arrayPiece);
    }
  }else{
    $array = intval($array);
  }
}

Then, just do this:

arrayValuesToInt($multiDimentionalArray);

This will make an array like this:

[["1","2"]["3","4"]]

look like this:

[[1,2][3,4]]

This will work with any level of depth.

Alternatively, you can use array_walk_recursive() for a shorter answer:

array_walk_recursive($array, function(&$value){
    $value = intval($value);
});

1. A yes-or-no problem is in P (Polynomial time) if the answer can be computed in polynomial time.
2. A yes-or-no problem is in NP (Non-deterministic Polynomial time) if a yes answer can be verified in polynomial time.

Intuitively, we can see that if a problem is in P, then it is in NP. Given a potential answer for a problem in P, we can verify the answer by simply recalculating the answer.

Less obvious, and much more difficult to answer, is whether all problems in NP are in P. Does the fact that we can verify an answer in polynomial time mean that we can compute that answer in polynomial time?

There are a large number of important problems that are known to be NP-complete (basically, if any these problems are proven to be in P, then all NP problems are proven to be in P). If P = NP, then all of these problems will be proven to have an efficient (polynomial time) solution.

Most scientists believe that P!=NP. However, no proof has yet been established for either P = NP or P!=NP. If anyone provides a proof for either conjecture, they will win US $1 million.

It looks like you're getting back an array. If it's always going to consist of just one element, you could do this (yes, it's pretty much the same thing as Tomalak's answer):

$.each(result[0], function(key, value){
    console.log(key, value);
});

If you might have more than one element and you'd like to iterate over them all, you could nest $.each():

$.each(result, function(key, value){
    $.each(value, function(key, value){
        console.log(key, value);
    });
});

There is another way if all you want is the text up to the first line feed:

x='some
thing'

y=${x%$'\n'*}

After that y will contain some and nothing else (no line feed).

What is happening here?

We perform a parameter expansion substring removal (${PARAMETER%PATTERN}) for the shortest match up to the first ANSI C line feed ($'\n') and drop everything that follows (*).

Better use Uri.IsWellFormedUriString(string uriString, UriKind uriKind). http://msdn.microsoft.com/en-us/library/system.uri.iswellformeduristring.aspx

Example :-

 if(Uri.IsWellFormedUriString(slct.Text,UriKind.Absolute))
 {
        Uri uri = new Uri(slct.Text);
        if (DeleteFileOnServer(uri))
        {
          nn.BalloonTipText = slct.Text + " has been deleted.";
          nn.ShowBalloonTip(30);
        }
 }

You can put an image instead, and do it like this:

HTML:

<img src="/images/uploadButton.png" id="upfile1" style="cursor:pointer" />
<input type="file" id="file1"  name="file1" style="display:none" />

JQuery:

$("#upfile1").click(function () {
    $("#file1").trigger('click');
});

CAVEAT: In IE9 and IE10 if you trigger the onclick in a file input via javascript the form gets flagged as 'dangerous' and cannot be submmited with javascript, no sure if it can be submitted traditionaly.

You can use dummynet ofcourse, There is extension of dummynet called KauNet. which can provide even more precise control of network conditions. It can drop/delay/re-order specific packets (that way you can perform more in-depth analysis of dropping key packets like TCP handshake to see how your web pages digest it). It also works in time domain. Usually most the emulators are tuned to work in data domain. In time domain you can specify from what time to what time you can alter the network conditions.

Here's what worked for me:

<pre class="prettyprint linenums">
    <code class="language-xml"><?php echo htmlspecialchars(file_get_contents("example.xml"), ENT_QUOTES); ?></code>
</pre>

Using htmlspecialchars will prevent tags from being displayed as html and won't break anything. Note that I'm using Prettyprint to highlight the code ;)

configure project in android studio from eclipse: you have to import eclipse ndk project to android studio without exporting to gradle and it works , also you need to add path of ndk in local.properties ,if shows error then add

sourceSets.main {
        jniLibs.srcDir 'src/main/libs' 
        jni.srcDirs = [] //disable automatic ndk-build callenter code here
    }

in build.gradle file then create jni folder and file using terminal and run it will work

Using lodash

import omit from 'lodash/omit';

const prevObject = {test: false, test2: true};
// Removes test2 key from previous object
const nextObject = omit(prevObject, 'test2');

Using Ramda

R.omit(['a', 'd'], {a: 1, b: 2, c: 3, d: 4}); //=> {b: 2, c: 3}

You can use the shortcode media API from instagram. If you use php you can use the following code to get the shortcode from the image's URL:

$matches = [];

preg_match('/instagram\.com\/p\/([^\/]*)/i', $url, $matches);

if (count($matches) > 1) {
    $shortcode = $matches[1];
}

Then send a request to the API using your access token (Replace ACCESS-TOKEN with your token)

$apiUrl = sprintf("https://api.instagram.com/v1/media/shortcode/%s?access_token=ACCESS-TOKEN", $shortcode);

I should have read more on existing questions in stack overflow.

C++ Passing Variable Number of Arguments is a similar question. Mike F has the following explanation:

There's no way of calling (eg) printf without knowing how many arguments you're passing to it, unless you want to get into naughty and non-portable tricks.

The generally used solution is to always provide an alternate form of vararg functions, so printf has vprintf which takes a va_list in place of the .... The ... versions are just wrappers around the va_list versions.

This is exactly what I was looking for. I performed a test implementation like this:

void Error(const char* format, ...)
{
    char dest[1024 * 16];
    va_list argptr;
    va_start(argptr, format);
    vsprintf(dest, format, argptr);
    va_end(argptr);
    printf(dest);
}

Some modern browsers have support for parsing JSON into a native object:

var var1 = '{"cols": [{"i" ....... 66}]}';
var result = JSON.parse(var1);

For the browsers that don't support it, you can download json2.js from json.org for safe parsing of a JSON object. The script will check for native JSON support and if it doesn't exist, provide the JSON global object instead. If the faster, native object is available it will just exit the script leaving it intact. You must, however, provide valid JSON or it will throw an error — you can check the validity of your JSON with http://jslint.com or http://jsonlint.com.

I got the same error and it got resolved when I deleted temp files using %temp% and restarting eclipse.

To append after the pattern: (-i is for in place replace). line1 and line2 are the lines you want to append(or prepend)

sed -i '/pattern/a \
line1 \
line2' inputfile

Output:

#cat inputfile
 pattern
 line1 line2 

To prepend the lines before:

sed -i '/pattern/i \
line1 \
line2' inputfile

Output:

#cat inputfile
 line1 line2 
 pattern

There is now a "native" solution on Windows 10, after enabling Bash on Windows, you can enter Bash shell by typing bash:

You can run Bash script like bash ./script.sh, but keep in mind that C drive is located at /mnt/c, and external hard drives are not mountable. So you might need to change your script a bit so it is compatible to Windows.

Also, even as root, you can still get permission denied when moving files around in /mnt, but you have your full root power in the / file system.

Also make sure your shell script is formatted with Unix style, or there can be errors.

Thanks for all the replies.

I was able to solve this by doing the following:

CONTROLLER:

[HttpPost]       
public ActionResult form_edit(FormModels model)
{
  model.error_msg = model.update_content(model);
  return RedirectToAction("Form_edit", "Form", model);
}

public ActionResult form_edit(FormModels model, string searchString,string id)
{
  string test = model.selectedvalue;
  var bal = new FormModels();
  bal.Countries = bal.get_contentdetails(searchString);
  bal.selectedvalue = id;
  bal.dd_text = "content_name";
  bal.dd_value = "content_id";

  test = model.error_msg;
  ViewBag.head = "Heading";

  if (model.error_msg != null)
  {
    ModelState.AddModelError("error_msg", test);
  }

  model.error_msg = "";
  return View(bal);
}   

VIEW:

@using (Html.BeginForm("form_edit", "Form", FormMethod.Post))
{
  <table>
    <tr>
      <td>
        @ViewBag.error
        @Html.ValidationMessage("error_msg")
      </td>
    </tr>
    <tr>
      <th>
        @Html.DisplayNameFor(model => model.content_name)
        @Html.DropDownListFor(x => x.selectedvalue, new SelectList(Model.Countries, Model.dd_value, Model.dd_text), "-- Select Product--")
      </th>
    </tr>
  </table>
}

Here is my class for show empty view, retry view (when load api failed) and loading progress for RecyclerView

public class RecyclerViewEmptyRetryGroup extends RelativeLayout {
    private RecyclerView mRecyclerView;
    private LinearLayout mEmptyView;
    private LinearLayout mRetryView;
    private ProgressBar mProgressBar;
    private OnRetryClick mOnRetryClick;

    public RecyclerViewEmptyRetryGroup(Context context) {
        this(context, null);
    }

    public RecyclerViewEmptyRetryGroup(Context context, AttributeSet attrs) {
        this(context, attrs, 0);
    }

    public RecyclerViewEmptyRetryGroup(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }

    @Override
    public void onViewAdded(View child) {
        super.onViewAdded(child);
        if (child.getId() == R.id.recyclerView) {
            mRecyclerView = (RecyclerView) findViewById(R.id.recyclerView);
            return;
        }
        if (child.getId() == R.id.layout_empty) {
            mEmptyView = (LinearLayout) findViewById(R.id.layout_empty);
            return;
        }
        if (child.getId() == R.id.layout_retry) {
            mRetryView = (LinearLayout) findViewById(R.id.layout_retry);
            mRetryView.setOnClickListener(new OnClickListener() {
                @Override
                public void onClick(View v) {
                    mRetryView.setVisibility(View.GONE);
                    mOnRetryClick.onRetry();
                }
            });
            return;
        }
        if (child.getId() == R.id.progress_bar) {
            mProgressBar = (ProgressBar) findViewById(R.id.progress_bar);
        }
    }

    public void loading() {
        mRetryView.setVisibility(View.GONE);
        mEmptyView.setVisibility(View.GONE);
        mProgressBar.setVisibility(View.VISIBLE);
    }

    public void empty() {
        mEmptyView.setVisibility(View.VISIBLE);
        mRetryView.setVisibility(View.GONE);
        mProgressBar.setVisibility(View.GONE);
    }

    public void retry() {
        mRetryView.setVisibility(View.VISIBLE);
        mEmptyView.setVisibility(View.GONE);
        mProgressBar.setVisibility(View.GONE);
    }

    public void success() {
        mRetryView.setVisibility(View.GONE);
        mEmptyView.setVisibility(View.GONE);
        mProgressBar.setVisibility(View.GONE);
    }

    public RecyclerView getRecyclerView() {
        return mRecyclerView;
    }

    public void setOnRetryClick(OnRetryClick onRetryClick) {
        mOnRetryClick = onRetryClick;
    }

    public interface OnRetryClick {
        void onRetry();
    }
}

activity_xml

<...RecyclerViewEmptyRetryGroup
        android:id="@+id/recyclerViewEmptyRetryGroup">

        <android.support.v7.widget.RecyclerView
            android:id="@+id/recyclerView"/>

        <LinearLayout
            android:id="@+id/layout_empty">
            ...
        </LinearLayout>

        <LinearLayout
            android:id="@+id/layout_retry">
            ...
        </LinearLayout>

        <ProgressBar
            android:id="@+id/progress_bar"/>

</...RecyclerViewEmptyRetryGroup>

The source is here https://github.com/PhanVanLinh/AndroidRecyclerViewWithLoadingEmptyAndRetry

Swift 3 and Above Version(s) for a delay of 10 seconds

    DispatchQueue.main.asyncAfter(deadline: .now() + 10) { [unowned self] in
        self.functionToCall()
    }

Its simply means that you have an array of values and you want record except that values/records.

you can simply pass a array into whereNotIn() laravel function.

With query builder

$users = DB::table('applications')
                    ->whereNotIn('id', [1,3,5]) 
                    ->get(); //will return without applications which contain this id's

With eloquent.

$result = ModelClassName::select('your_column_name')->whereNotIn('your_column_name', ['satatus1', 'satatus2']); //return without application which contain this status.

This is for Mac users:

first of all you have to clarify where the class file is... so for example, in 'Terminal' (A Mac Application) you would type:

cd

then wherever you file is e.g:

cd /Users/CollarBlast/Desktop/JavaFiles/

then you would hit enter. After that you would do the command. e.g:

cd /Users/CollarBlast/Desktop/JavaFiles/ (then i would press enter...)

Then i would type the command:

javap -c JavaTestClassFile.class (then i would press enter again...)

and hopefully it should work!

That's my solution

<div class="main" style="width: 100%;">
    <div class="container">
        <div class="sizing"></div>
        <div class="content"></div>
    </div>
</div>

.main {
    width: 100%;
}
.container {
    width: 30%;
    float: right;
    position: relative;
}
.sizing {
    width: 100%;
    padding-bottom: 50%;
    visibility: hidden;
}
.content {
    width: 100%;
    height: 100%;
    background-color: red;
    position: absolute;
    margin-top: -50%;
}

http://jsfiddle.net/aG4Fs/3/

Just to help if anyone stumble on this question like me, if you want to use if in PostgreSQL, you use "CASE"

select 
    case
        when stage = 1 then 'running'
        when stage = 2 then 'done'
        when stage = 3 then 'stopped'
    else 
        'not running'
    end as run_status from processes

XOR is a binary operation, it stands for "exclusive or", that is to say the resulting bit evaluates to one if only exactly one of the bits is set.

This is its function table:

a | b | a ^ b
--|---|------
0 | 0 | 0
0 | 1 | 1
1 | 0 | 1
1 | 1 | 0

This operation is performed between every two corresponding bits of a number.

Example: 7 ^ 10
In binary: 0111 ^ 1010

  0111
^ 1010
======
  1101 = 13

Properties: The operation is commutative, associative and self-inverse.

It is also the same as addition modulo 2.

The problem with your initial example was primarily due to the use of const rather than static; you can't create a non-null const reference in C#.

I believe this would also have worked:

public static class ErrorCode
{
    public static IDictionary<string, string> ErrorCodeDic
        = new Dictionary<string, string>()
            { {"1", "User name or password problem"} };
}

Also, as Y Low points out, adding readonly is a good idea as well, and none of the modifiers discussed here will prevent the dictionary itself from being modified.

Indent correctly; your for statement should be inside the with block:

import csv    

with open('v.csv', 'w') as csvfile:
    cwriter = csv.writer(csvfile, delimiter=' ', quotechar='|', quoting=csv.QUOTE_MINIMAL)

    for w, c in p.items():
        cwriter.writerow(w + c)

Outside the with block, the file is closed.

>>> with open('/tmp/1', 'w') as f:
...     print(f.closed)
... 
False
>>> print(f.closed)
True

Here is a link from developer.nokia.com wiki pages, which explains how to install Windows Phone 8 SDK on a Virtual Machine with Working Emulator

And another link here

AFAIK, it is not possible to directly install WP8 SDK in Windows 7, because WP8 sdk is VS 2012 supported and also its emulator works on a Hyper-V (which is integrated into the Windows 8).

Iterate string:

for ($i = 0; $i < strlen($str); $i++){
    echo $str[$i];
}

I posted this question and never saw the feedback (which came in several months after, it seems :).

As Kinlan mentioned, ALLOW-FROM is not supported in all browsers as an X-Frame-Options value.

The solution was to branch based on browser type. For IE, ship X-Frame-Options. For everyone else, ship X-Content-Security-Policy.

Hope this helps, and sorry for taking so long to close the loop!

High level consumers are registered into Zookeeper, so you can fetch a list from ZK, similarly to the way kafka-topics.sh fetches the list of topics. I don't think there's a way to collect all consumers; any application sending in a few consume requests is actually a "consumer", and you cannot tell whether they are done already.

On the consumer side, there's a JMX metric exposed to monitor the lag. Also, there is Burrow for lag monitoring.

Cross browser testing java scripts

public class MultipleBrowser {

    public WebDriver driver= null;
    String browser="mozilla";
    String url="https://www.omnicard.com";

    @BeforeMethod
    public void LaunchBrowser() {

        if(browser.equalsIgnoreCase("mozilla"))
            driver= new FirefoxDriver();
        else if(browser.equalsIgnoreCase("safari"))
            driver= new SafariDriver();
        else if(browser.equalsIgnoreCase("chrome"))
            //System.setProperty("webdriver.chrome.driver","/Users/mhossain/Desktop/chromedriver");
            driver= new ChromeDriver(); 
        driver.manage().timeouts().implicitlyWait(4, TimeUnit.SECONDS);
        driver.navigate().to(url);
    }

}

but when you want to run firefox you need to chrome path disable, otherwise browser will launch but application may not.(try both way) .

Just in case you forgot or avoided to copy through PHPMYADMIN export feature..

Procedure: You can manually copy: Procedure For MAC OS, for latest versions of XAMPP

Location : Find the database folders here /Users/XXXXUSER/XAMPP/xamppfiles/var/mysql..

Solution: Copy the entire folder with database names into your new xampp in similar folder.

Hope it helps, happy coding.

For CentOS, run this: sudo yum install libXext libSM libXrender

The lmplot function returns a FacetGrid instance. This object has a method called set, to which you can pass key=value pairs and they will be set on each Axes object in the grid.

Secondly, you can set only one side of an Axes limit in matplotlib by passing None for the value you want to remain as the default.

Putting these together, we have:

g = sns.lmplot('X', 'Y', df, col='Z', sharex=False, sharey=False)
g.set(ylim=(0, None))

simply use:

@JsonFormat(pattern="10/04/2019")

or you can use pattern as you like for e.g: ('-' in place of '/')

If you are using dataset to bind in a Grid, you can add the row after you fill in the sql data adapter:

adapter.Fill(ds);
ds.Tables(0).Rows.Add();

look at the image :)

Main program calls library function (which might be system level function also) with callback function name. This callback function might be implemented in multiple way. The main program choose one callback as per requirement.

Finally, the library function calls the callback function during execution.

If the user exists you can get the user in user_object else user_object will be None.

try:
    user_object = User.objects.get(email = cleaned_info['username'])
except User.DoesNotExist:
    user_object = None
if user_object:
    # user exist
    pass
else:
    # user does not exist
    pass

You need to do it directly on a server. But a better way is using PHP. I have heard that PHP has a special code that can send e-mail directly without opening the mail client.

I was also developing a similar application. I was also getting not found error even though the file was there. This solve my problem. I mention my download folder in 'static_folder':

app = Flask(__name__,static_folder='pdf')

My code for the download is as follows:

@app.route('/pdf/<path:filename>', methods=['GET', 'POST'])
def download(filename):    
    return send_from_directory(directory='pdf', filename=filename)

This is how I am calling my file from html.

<a class="label label-primary" href=/pdf/{{  post.hashVal }}.pdf target="_blank"  style="margin-right: 5px;">Download pdf </a>
<a class="label label-primary" href=/pdf/{{  post.hashVal }}.png target="_blank"  style="margin-right: 5px;">Download png </a>

my best solution :

 WHERE  
 COALESCE(char_length(fieldValue), 0) = 0

COALESCE returns the first non-null expr in the expression list().

if the fieldValue is null or empty string then: we will return the second element then 0.

so 0 is equal to 0 then this fieldValue is a null or empty string.

in python for exemple:

def coalesce(fieldValue):
    if fieldValue in (null,''):
        return 0

good luck

mytimer.h:

    #ifndef MYTIMER_H
    #define MYTIMER_H

    #include <QTimer>

    class MyTimer : public QObject
    {
        Q_OBJECT
    public:
        MyTimer();
        QTimer *timer;

    public slots:
        void MyTimerSlot();
    };

    #endif // MYTIME

mytimer.cpp:

#include "mytimer.h"
#include <QDebug>

MyTimer::MyTimer()
{
    // create a timer
    timer = new QTimer(this);

    // setup signal and slot
    connect(timer, SIGNAL(timeout()),
          this, SLOT(MyTimerSlot()));

    // msec
    timer->start(1000);
}

void MyTimer::MyTimerSlot()
{
    qDebug() << "Timer...";
}

main.cpp:

#include <QCoreApplication>
#include "mytimer.h"

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);

    // Create MyTimer instance
    // QTimer object will be created in the MyTimer constructor
    MyTimer timer;

    return a.exec();
}

If we run the code:

Timer...
Timer...
Timer...
Timer...
Timer...
...

resources

This works on keyup and paste, it colors the text red when you are almost up to the limit, truncates it when you go over and alerts you to edit your text, which you can do.

var t2= /* textarea reference*/

t2.onkeyup= t2.onpaste= function(e){
    e= e || window.event;
    var who= e.target || e.srcElement;
    if(who){
        var val= who.value, L= val.length;
        if(L> 175){
            who.style.color= 'red';
        }
        else who.style.color= ''
        if(L> 180){
            who.value= who.value.substring(0, 175);
            alert('Your message is too long, please shorten it to 180 characters or less');
            who.style.color= '';
        }
    }
}

Simple implementation of BST in Python

class TreeNode:
    def __init__(self, value):
        self.left = None
        self.right = None
        self.data = value

class Tree:
    def __init__(self):
        self.root = None

    def addNode(self, node, value):
        if(node==None):
            self.root = TreeNode(value)
        else:
            if(value<node.data):
                if(node.left==None):
                    node.left = TreeNode(value)
                else:
                    self.addNode(node.left, value)
            else:
                if(node.right==None):
                    node.right = TreeNode(value)
                else:
                    self.addNode(node.right, value)

    def printInorder(self, node):
        if(node!=None):
            self.printInorder(node.left)
            print(node.data)
            self.printInorder(node.right)

def main():
    testTree = Tree()
    testTree.addNode(testTree.root, 200)
    testTree.addNode(testTree.root, 300)
    testTree.addNode(testTree.root, 100)
    testTree.addNode(testTree.root, 30)
    testTree.printInorder(testTree.root)

What is wrong with a git merge master on the feature branch? This will preserve the work you had, while keeping it separate from the mainline branch.

A--B--C------F--G
       \         \
        D--E------H

Edit: Ah sorry did not read your problem statement. You will need force as you performed a rebase. All commands that modify the history will need the --force argument. This is a failsafe to prevent you from losing work (the old D and E would be lost).

So you performed a git rebase which made the tree look like (although partially hidden as D and E are no longer in a named branch):

A--B--C------F--G
       \         \
        D--E      D'--E'

So, when trying to push your new feature branch (with D' and E' in it), you would lose D and E.

I think you need something like:

var text= data.response.venue.tips.groups[0].items[1].text;

This approach can be used in case commands 'ps', 'pidof' and rest are not available. I personally use procfs very frequently in my tools/scripts/programs.

   egrep -m1  "mysqld$|httpd$" /proc/[0-9]*/status | cut -d'/' -f3

Little explanation what is going on:

1. -m1 - stop process on first match
2. "mysqld$|httpd$" - grep will match lines which ended on mysqld OR httpd
3. /proc/[0-9]* - bash will match line which started with any number
4. cut - just split the output by delimiter '/' and extract field 3

newer MUI version:

<input
  accept="image/*"
  className={classes.input}
  style={{ display: 'none' }}
  id="raised-button-file"
  multiple
  type="file"
/>
<label htmlFor="raised-button-file">
  <Button variant="raised" component="span" className={classes.button}>
    Upload
  </Button>
</label> 

Make sure that both the chromedriver and google-chrome executable have execute permissions

sudo chmod -x "/usr/bin/chromedriver"

sudo chmod -x "/usr/bin/google-chrome"

Test whether something exists at given path using the -e file-test operator.

print "$base_path exists!\n" if -e $base_path;

However, this test is probably broader than you intend. The code above will generate output if a plain file exists at that path, but it will also fire for a directory, a named pipe, a symlink, or a more exotic possibility. See the documentation for details.

Given the extension of .TGZ in your question, it seems that you expect a plain file rather than the alternatives. The -f file-test operator asks whether a path leads to a plain file.

print "$base_path is a plain file!\n" if -f $base_path;

The perlfunc documentation covers the long list of Perl's file-test operators that covers many situations you will encounter in practice.

• -r
  File is readable by effective uid/gid.
• -w
  File is writable by effective uid/gid.
• -x
  File is executable by effective uid/gid.
• -o
  File is owned by effective uid.
• -R
  File is readable by real uid/gid.
• -W
  File is writable by real uid/gid.
• -X
  File is executable by real uid/gid.
• -O
  File is owned by real uid.
• -e
  File exists.
• -z
  File has zero size (is empty).
• -s
  File has nonzero size (returns size in bytes).
• -f
  File is a plain file.
• -d
  File is a directory.
• -l
  File is a symbolic link (false if symlinks aren’t supported by the file system).
• -p
  File is a named pipe (FIFO), or Filehandle is a pipe.
• -S
  File is a socket.
• -b
  File is a block special file.
• -c
  File is a character special file.
• -t
  Filehandle is opened to a tty.
• -u
  File has setuid bit set.
• -g
  File has setgid bit set.
• -k
  File has sticky bit set.
• -T
  File is an ASCII or UTF-8 text file (heuristic guess).
• -B
  File is a “binary” file (opposite of -T).
• -M
  Script start time minus file modification time, in days.
• -A
  Same for access time.
• -C
  Same for inode change time (Unix, may differ for other platforms)

Use margin-left: x%; where x is the half of the width of the element.

Plus: when you install requests with python3, the command is:

pip3 install requests

not

pip install requests

The answers here already are great, but don't necessarily work for custom ViewGroups. To get all custom Views to retain their state, you must override onSaveInstanceState() and onRestoreInstanceState(Parcelable state) in each class. You also need to ensure they all have unique ids, whether they're inflated from xml or added programmatically.

What I came up with was remarkably like Kobor42's answer, but the error remained because I was adding the Views to a custom ViewGroup programmatically and not assigning unique ids.

The link shared by mato will work, but it means none of the individual Views manage their own state - the entire state is saved in the ViewGroup methods.

The problem is that when multiple of these ViewGroups are added to a layout, the ids of their elements from the xml are no longer unique (if its defined in xml). At runtime, you can call the static method View.generateViewId() to get a unique id for a View. This is only available from API 17.

Here is my code from the ViewGroup (it is abstract, and mOriginalValue is a type variable):

public abstract class DetailRow<E> extends LinearLayout {

    private static final String SUPER_INSTANCE_STATE = "saved_instance_state_parcelable";
    private static final String STATE_VIEW_IDS = "state_view_ids";
    private static final String STATE_ORIGINAL_VALUE = "state_original_value";

    private E mOriginalValue;
    private int[] mViewIds;

// ...

    @Override
    protected Parcelable onSaveInstanceState() {

        // Create a bundle to put super parcelable in
        Bundle bundle = new Bundle();
        bundle.putParcelable(SUPER_INSTANCE_STATE, super.onSaveInstanceState());
        // Use abstract method to put mOriginalValue in the bundle;
        putValueInTheBundle(mOriginalValue, bundle, STATE_ORIGINAL_VALUE);
        // Store mViewIds in the bundle - initialize if necessary.
        if (mViewIds == null) {
            // We need as many ids as child views
            mViewIds = new int[getChildCount()];
            for (int i = 0; i < mViewIds.length; i++) {
                // generate a unique id for each view
                mViewIds[i] = View.generateViewId();
                // assign the id to the view at the same index
                getChildAt(i).setId(mViewIds[i]);
            }
        }
        bundle.putIntArray(STATE_VIEW_IDS, mViewIds);
        // return the bundle
        return bundle;
    }

    @Override
    protected void onRestoreInstanceState(Parcelable state) {

        // We know state is a Bundle:
        Bundle bundle = (Bundle) state;
        // Get mViewIds out of the bundle
        mViewIds = bundle.getIntArray(STATE_VIEW_IDS);
        // For each id, assign to the view of same index
        if (mViewIds != null) {
            for (int i = 0; i < mViewIds.length; i++) {
                getChildAt(i).setId(mViewIds[i]);
            }
        }
        // Get mOriginalValue out of the bundle
        mOriginalValue = getValueBackOutOfTheBundle(bundle, STATE_ORIGINAL_VALUE);
        // get super parcelable back out of the bundle and pass it to
        // super.onRestoreInstanceState(Parcelable)
        state = bundle.getParcelable(SUPER_INSTANCE_STATE);
        super.onRestoreInstanceState(state);
    } 
}

Here, the guy has written pretty well and simple: https://www.jeffknupp.com/blog/2014/06/18/improve-your-python-python-classes-and-object-oriented-programming/

Read above link as a reference to this:

self? So what's with that self parameter to all of the Customer methods? What is it? Why, it's the instance, of course! Put another way, a method like withdraw defines the instructions for withdrawing money from some abstract customer's account. Calling jeff.withdraw(100.0) puts those instructions to use on the jeff instance.

So when we say def withdraw(self, amount):, we're saying, "here's how you withdraw money from a Customer object (which we'll call self) and a dollar figure (which we'll call amount). self is the instance of the Customer that withdraw is being called on. That's not me making analogies, either. jeff.withdraw(100.0) is just shorthand for Customer.withdraw(jeff, 100.0), which is perfectly valid (if not often seen) code.

init self may make sense for other methods, but what about init? When we call init, we're in the process of creating an object, so how can there already be a self? Python allows us to extend the self pattern to when objects are constructed as well, even though it doesn't exactly fit. Just imagine that jeff = Customer('Jeff Knupp', 1000.0) is the same as calling jeff = Customer(jeff, 'Jeff Knupp', 1000.0); the jeff that's passed in is also made the result.

This is why when we call init, we initialize objects by saying things like self.name = name. Remember, since self is the instance, this is equivalent to saying jeff.name = name, which is the same as jeff.name = 'Jeff Knupp. Similarly, self.balance = balance is the same as jeff.balance = 1000.0. After these two lines, we consider the Customer object "initialized" and ready for use.

Be careful what you __init__

After init has finished, the caller can rightly assume that the object is ready to use. That is, after jeff = Customer('Jeff Knupp', 1000.0), we can start making deposit and withdraw calls on jeff; jeff is a fully-initialized object.

The real downfall of Singletons is that they break inheritance. You can't derive a new class to give you extended functionality unless you have access to the code where the Singleton is referenced. So, beyond the fact the the Singleton will make your code tightly coupled (fixable by a Strategy Pattern ... aka Dependency Injection) it will also prevent you from closing off sections of the code from revision (shared libraries).

So even the examples of loggers or thread pools are invalid and should be replaced by Strategies.

To remove all the documents in all the collections:

db.getCollectionNames().forEach( function(collection_name) { 
    if (collection_name.indexOf("system.") == -1) {
        print ( ["Removing: ", db[collection_name].count({}), " documents from ", collection_name].join('') );
        db[collection_name].remove({}); 
    }
});

I think the correct access method is using the index:

df_2.loc[:,'D'] = df_2['B']

Remember, if you have a string which was read as a line from a text file using the fgets() function, you need to use substr($string, -3, 1) so that you get the actual character and not part of the CRLF (Carriage Return Line Feed).

I don't think the person who asked the question needed this, but for me, I was having trouble getting that last character from a string from a text file so I'm sure others will come across similar problems.

This can be done in a single line without the use of library. Please check java.text.MessageFormat class.

Example

String stringWithPlaceHolder = "test String with placeholders {0} {1} {2} {3}";
String formattedStrin = java.text.MessageFormat.format(stringWithPlaceHolder, "place-holder-1", "place-holder-2", "place-holder-3", "place-holder-4");

Output will be

test String with placeholders place-holder-1 place-holder-2 place-holder-3 place-holder-4

You have two references to the :lot_priprc binding variable -- while it should require you to only set the variable's value once and bind it in both places, I've had problems where this didn't work and had to treat each copy as a different variable. A pain, but it worked.

The simple answer is to set the Access-Control-Allow-Origin header to localhost or *. Here's how I usually do it:

Add the following code to bootstrap/app.php:

header('Access-Control-Allow-Origin: *');
header('Access-Control-Allow-Methods: *');
header('Access-Control-Allow-Headers: *');

I would add that if you are upgrading from Sublime Text 2, go into /usr/bin and delete your old subl first before following the same instructions above. It's worth the upgrade.

Visit https://www.tutorialspoint.com/python/string_join.htm

s=" "
seq=["ab", "cd", "ef"]
print(s.join(seq))

ab cd ef

s="."
print(s.join(seq))

ab.cd.ef

I tried a lot of different ways, but this tried and true regex function works for me when I am looking for param values in a URL, hope this helps:

        var text = 'www.test.com/t.html?a=1&b=3&c=m2-m3-m4-m5'_x000D_
_x000D_
        function QueryString(item, text){_x000D_
            var foundString = text.match(new RegExp("[\?\&]" + item + "=([^\&]*)(\&?)","i"));_x000D_
            return foundString ? foundString[1] : foundString;_x000D_
        }_x000D_
_x000D_
        console.log(QueryString('c', text));

use like QueuryString('param_name', url) and will return the value

m2-m3-m4-m5

On RHEL/CentOS/OEL 6

• Check that the firewall is allowing connection to Zabbix Server port which is 10051, as a user with root priv:

  vi /etc/sysconfig/iptables

and add the following lines

-A INPUT -m state --state NEW -m tcp -p tcp --dport 10051 -j ACCEPT

restart iptables

# service iptables restart

If you have disabled IPV6, you need to also edit the hosts file and remove IPV6 line for "localhost"

# vi /etc/hosts

remove or comment out "#" the ipv6 line for localhost

::1                   localhost6.localdomain6   localhost6

restart the zabbix-server and check if the error message is gone.

Another example for out-of-the-box support, and one that might be a bit baffling at first when you are used to the way built-in open() behaves, are connection objects of popular database modules such as:

• sqlite3
• psycopg2
• cx_oracle

The connection objects are context managers and as such can be used out-of-the-box in a with-statement, however when using the above note that:

When the with-block is finished, either with an exception or without, the connection is not closed. In case the with-block finishes with an exception, the transaction is rolled back, otherwise the transaction is commited.

This means that the programmer has to take care to close the connection themselves, but allows to acquire a connection, and use it in multiple with-statements, as shown in the psycopg2 docs:

conn = psycopg2.connect(DSN)

with conn:
    with conn.cursor() as curs:
        curs.execute(SQL1)

with conn:
    with conn.cursor() as curs:
        curs.execute(SQL2)

conn.close()

In the example above, you'll note that the cursor objects of psycopg2 also are context managers. From the relevant documentation on the behavior:

When a cursor exits the with-block it is closed, releasing any resource eventually associated with it. The state of the transaction is not affected.

In Visual Studio 2017 - When you compile using IDE - It will download all the missing nuget packages and save in the folder "packages".

But on the build machine compilation was done using msbuild.exe. In that case, I downloaded nuget.exe and kept in path.

During each build process before executing msbuild.exe. It will execute -> nuget.exe restore NAME_OF_SLN_File (if there is only one .SLN file then you can ignore that parameter)

$("#selector <b>></b> option:selected").val()

Or

$("#selector <b>></b> option:selected").text()

Above codes worked well for me

cordova platform rm android

cordova plugin rm cordova-plugin-firebase

cordova platform add android

A JAR file is actually just a ZIP file. It can contain anything - usually it contains compiled Java code (*.class), but sometimes also Java sourcecode (*.java).

However, Java can be decompiled - in case the developer obfuscated his code you won't get any useful class/function/variable names though.

To access the elements in the array, use array notation: $product['prodname']

$product->prodname is object notation, which can only be used to access object attributes and methods.

The simples way is to use 'to' property:

<Link to="chart" target="_blank" to="http://link2external.page.com" >Test</Link>

Have you check your deploy path in Server Locations? May be your tomcat deploy path changed and Eclipse is not deploying your application.

In eclipse.

1. Window -> Show View -> Servers.
2. Double click to your server.

3. In Tomcat Server's Overview.

   3.1 check your Server Path

   3.2 check your Deploy Path

You can use HttpClient and HttpPost to build and send the request.

HttpClient client= new DefaultHttpClient();
HttpPost request = new HttpPost("www.example.com");

List<NameValuePair> pairs = new ArrayList<NameValuePair>();
pairs.add(new BasicNameValuePair("paramName", "paramValue"));

request.setEntity(new UrlEncodedFormEntity(pairs ));
HttpResponse resp = client.execute(request);

You can use PostBackUrl="~/Confirm.aspx"

For example:

In your .aspx file

<asp:Button ID="btnConfirm" runat="server" Text="Confirm" PostBackUrl="~/Confirm.aspx" />

or in your .cs file

btnConfirm.PostBackUrl="~/Confirm.aspx"

Better option to change also collation of varchar columns inside table also

SELECT CONCAT('ALTER TABLE `', TABLE_NAME,'` CONVERT TO CHARACTER SET utf8 COLLATE utf8_general_ci;') AS    mySQL
FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_SCHEMA= "myschema"
AND TABLE_TYPE="BASE TABLE"

Additionnaly if you have data with forein key on non utf8 column before launch the bunch script use

SET foreign_key_checks = 0;

It means global SQL will be for mySQL :

SET foreign_key_checks = 0;
ALTER TABLE `table1` CONVERT TO CHARACTER SET utf8 COLLATE utf8_unicode_ci;
ALTER TABLE `table2` CONVERT TO CHARACTER SET utf8 COLLATE utf8_unicode_ci;
ALTER TABLE `tableXXX` CONVERT TO CHARACTER SET utf8 COLLATE utf8_unicode_ci;
SET foreign_key_checks = 1;

But take care if according mysql documentation http://dev.mysql.com/doc/refman/5.1/en/charset-column.html,

If you use ALTER TABLE to convert a column from one character set to another, MySQL attempts to map the data values, but if the character sets are incompatible, there may be data loss. "

EDIT: Specially with column type enum, it just crash completly enums set (even if there is no special caracters) https://bugs.mysql.com/bug.php?id=26731

HttpClient is deprecated in sdk 23.

You have to move on URLConnection or down sdk to 22

Still you need HttpClient with update gradle sdk 23

You have to add the dependencies of HttpClient in app/gradle as

dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    compile 'com.android.support:appcompat-v7:23.0.1'

    compile 'org.jbundle.util.osgi.wrapped:org.jbundle.util.osgi.wrapped.org.apache.http.client:4.1.2'
    ...
}

SELECT only retrieves data from the database, it does not change the table itself.

If you write

SELECT a AS b FROM x

"b" is just an alias name in the query. It does not create an extra column. Your result in the example would only contain one column named "b". But the column in the table would stay "a". "b" is just another name.

I don't really understand what you mean with "so I can use it with each item later on". Do you mean later in the select statement or later in your application. Perhaps you could provide some example code.

I suppose one thing that may be concerning you is whether or not the entries could change, so that the 2 becomes a different number, for instance. You can put your mind at ease here, because in Python, integers are immutable, meaning they cannot change after they are created.

Not everything in Python is immutable, though. For example, lists are mutable---they can change after being created. So for example, if you had a list of lists

>>> a = [[1], [2], [3]]
>>> a[0].append(7)
>>> a
[[1, 7], [2], [3]]

Here, I changed the first entry of a (I added 7 to it). One could imagine shuffling things around, and getting unexpected things here if you are not careful (and indeed, this does happen to everyone when they start programming in Python in some way or another; just search this site for "modifying a list while looping through it" to see dozens of examples).

It's also worth pointing out that x = x + [a] and x.append(a) are not the same thing. The second one mutates x, and the first one creates a new list and assigns it to x. To see the difference, try setting y = x before adding anything to x and trying each one, and look at the difference the two make to y.

If you really want to use linq, you can do something like this

li= (from tl in li
    select new Myclass
    {
        name = tl.name,
        age = (tl.name == "di" ? 10 : (tl.name == "marks" ? 20 : 30))

    }).ToList();

or

li = li.Select(ex => new MyClass { name = ex.name, age = (ex.name == "di" ? 10 : (ex.name == "marks" ? 20 : 30)) }).ToList();

This assumes that there are only 3 types of name. I would externalize that part into a function to make it more manageable.

spark-csv is part of core Spark functionality and doesn't require a separate library. So you could just do for example

df = spark.read.format("csv").option("header", "true").load("csvfile.csv")

In scala,(this works for any format-in delimiter mention "," for csv, "\t" for tsv etc)

val df = sqlContext.read.format("com.databricks.spark.csv") .option("delimiter", ",") .load("csvfile.csv")

Update

As of jQuery 3.0, the new syntax is just .on:

see this answer here and the code:

$('iframe').on('load', function() {
    // do stuff 
});

I had this problem and the comprehensive descriptions proposed in this helped me to fix it.

The second declared problem was my issue. I used a third-party repository which I had just added it do the repository part of the pom file in my project. I add the same repository information into pluginrepository to resolve this problem.

You can do it in this way with Swift 3.0:

let date = Date()
let calendar = Calendar.current
let components = calendar.dateComponents([.year, .month, .day], from: date)

let year =  components.year
let month = components.month
let day = components.day

print(year)
print(month)
print(day)

MailSystem.NET contains all your need for IMAP4. It's free & open source.

(I'm involved in the project)

Object appears to be a more specific declaration than any. From the TypeScript spec (section 3):

All types in TypeScript are subtypes of a single top type called the Any type. The any keyword references this type. The Any type is the one type that can represent any JavaScript value with no constraints. All other types are categorized as primitive types, object types, or type parameters. These types introduce various static constraints on their values.

Also:

The Any type is used to represent any JavaScript value. A value of the Any type supports the same operations as a value in JavaScript and minimal static type checking is performed for operations on Any values. Specifically, properties of any name can be accessed through an Any value and Any values can be called as functions or constructors with any argument list.

Objects do not allow the same flexibility.

For example:

var myAny : any;

myAny.Something(); // no problemo

var myObject : Object;

myObject.Something(); // Error: The property 'Something' does not exist on value of type 'Object'.

$myarray = array_values($myarray);

array_values

I'm coming from a SQL Server background also and spent the past 2 weeks figuring out how to run scripts like this in IBM Data Studio. Hope it helps.

CREATE VARIABLE v_lookupid INTEGER DEFAULT (4815162342); --where 4815162342 is your variable data 
  SELECT * FROM DB1.PERSON WHERE PERSON_ID = v_lookupid;
  SELECT * FROM DB1.PERSON_DATA WHERE PERSON_ID = v_lookupid;
  SELECT * FROM DB1.PERSON_HIST WHERE PERSON_ID = v_lookupid;
DROP VARIABLE v_lookupid; 

kdgg

delete all lines above the current one.

Since ForEach-Object is a cmdlet, break and continue will behave differently here than with the foreach keyword. Both will stop the loop but will also terminate the entire script:

break:

0..3 | foreach {
    if ($_ -eq 2) { break }
    $_
}
echo "Never printed"

# OUTPUT:
# 0
# 1

continue:

0..3 | foreach {
    if ($_ -eq 2) { continue }
    $_
}
echo "Never printed"

# OUTPUT:
# 0
# 1

So far, I have not found a "good" way to break a foreach script block without breaking the script, except "abusing" exceptions:

throw:

try {
    0..3 | foreach {
        if ($_ -eq 2) { throw }
        $_
    }
} catch { }
echo "End"

# OUTPUT:
# 0
# 1
# End

The alternative (which is not always possible) would be to use the foreach keyword:

foreach:

foreach ($_ in (0..3)) {
    if ($_ -eq 2) { break }
    $_
}
echo "End"

# OUTPUT:
# 0
# 1
# End

there should has a concurrent implemention of List interface supporting such operation.

try java.util.concurrent.CopyOnWriteArrayList.class

You can use Object.defineProperty as noted in the MDN JavaScript Reference:

var myName = "myName";
var f = function () { return true; };
Object.defineProperty(f, 'name', {value: myName, writable: false});

If you prefer to delete the controller manually:

For controller welcome

rm app/controllers/welcome_controller.rb
rm app/views/welcome
rm test/controllers/welcome_controller_test.rb
rm app/helpers/welcome_helper.rb
rm test/helpers/welcome_helper_test.rb
rm app/assets/javascripts/welcome.js.coffee
rm app/assets/stylesheets/welcome.css.scss

Open your windows search bar, and search for the keyword Tomcat. If a shortcut file is found instead, you can open the source file location of the shortcut by right-clicking the shortcut file and selecting the Properties.

For Spring version 4.1.3+

I tried Jama's solution, but then all responses were returned with Content-type 'application/json', including the main, generated HTML page.

Overriding configureMessageConverters(...) prevents spring from setting up the default converters. Spring 4.1.3 allows modification of already configured converters by overriding extendMessageConverters(...):

@Configuration
public class ConverterConfig extends WebMvcConfigurerAdapter {
    @Override
    public void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
        for (HttpMessageConverter<?> converter : converters) {
            if (converter instanceof AbstractJackson2HttpMessageConverter) {
                AbstractJackson2HttpMessageConverter c = (AbstractJackson2HttpMessageConverter) converter;
                ObjectMapper objectMapper = c.getObjectMapper();
                objectMapper.setSerializationInclusion(Include.NON_NULL);
            }
        }

        super.extendMessageConverters(converters);
    }
}

see org.springframework..WebMvcConfigurationSupport#getMessageConverters()

see org.springframework..WebMvcConfigurationSupport#addDefaultHttpMessageConverters(...)

If you want a quick and easy solution (and you have gulp installed).

In my gulpfile.js I run a simple copy paste task that puts any files I might need into ./public/modules/ directory.

gulp.task('modules', function() {
    sources = [
      './node_modules/prismjs/prism.js',
      './node_modules/prismjs/themes/prism-dark.css',
    ]
    gulp.src( sources ).pipe(gulp.dest('./public/modules/'));
});

gulp.task('copy-modules', ['modules']);

The downside to this is that it isn't automated. However, if all you need is a few scripts and styles copied over (and kept in a list), this should do the job.

enum ServicePlatform {
    UPLAY = "uplay",
    PSN = "psn",
    XBL = "xbl"
}

becomes:

{ UPLAY: 'uplay', PSN: 'psn', XBL: 'xbl' }

so

ServicePlatform.UPLAY in ServicePlatform // false

SOLUTION:

ServicePlatform.UPLAY.toUpperCase() in ServicePlatform // true

It depends. You could

string.match(/^abc$/)

But that would not match the following string: 'the first 3 letters of the alphabet are abc. not abc123'

I think you would want to use \b (word boundaries):

var str = 'the first 3 letters of the alphabet are abc. not abc123';_x000D_
var pat = /\b(abc)\b/g;_x000D_
console.log(str.match(pat));

Live example: http://jsfiddle.net/uu5VJ/

If the former solution works for you, I would advise against using it.

That means you may have something like the following:

var strs = ['abc', 'abc1', 'abc2']
for (var i = 0; i < strs.length; i++) {
    if (strs[i] == 'abc') {
        //do something 
    }
    else {
        //do something else
    }
}

While you could use

if (str[i].match(/^abc$/g)) {
    //do something 
}

It would be considerably more resource-intensive. For me, a general rule of thumb is for a simple string comparison use a conditional expression, for a more dynamic pattern use a regular expression.

More on JavaScript regexes: https://developer.mozilla.org/en/JavaScript/Guide/Regular_Expressions

I think it's also worth mentioning that you will also get the message when you try to link to object of any class that has at least one virtual method and linker cannot find the file. For example:

Foo.hpp:

class Foo
{
public:
    virtual void StartFooing();
};

Foo.cpp:

#include "Foo.hpp"

void Foo::StartFooing(){ //fooing }

Compiled with:

g++ Foo.cpp -c

And main.cpp:

#include "Foo.hpp"

int main()
{
    Foo foo;
}

Compiled and linked with:

g++ main.cpp -o main

Gives our favourite error:

/tmp/cclKnW0g.o: In function main': main.cpp:(.text+0x1a): undefined reference tovtable for Foo' collect2: error: ld returned 1 exit status

This occure from my undestanding becasue:

1. Vtable is created per class at compile time

2. Linker does not have access to vtable that is in Foo.o

That can better be condensed down to this.

var item = Items.First(x => x.Id == 123);

Your query is currently collecting all results (and there may be more than one) within the enumerable and then taking the first one from that set, doing more work than necessary.

Single/SingleOrDefault are worthwhile, but only if you want to iterate through the entire collection and verify that the match is unique in addition to selecting that match. First/FirstOrDefault will just take the first match and leave, regardless of how many duplicates actually exist.

You must have some virtual function declared in one of the parent classes and never implemented in any of the child classes. Make sure that all virtual functions are implemented somewhere in the inheritence chain. If a class's definition includes a pure virtual function that is never implemented, an instance of that class cannot ever be constructed.

str_replace with arrays just performs all the replacements sequentially. Use strtr instead to do them all at once:

$new_message = strtr($message, 'lmnopq...', 'abcdef...');

to preserve the console output, that is, write to a file and also have it displayed on the console, you could use a class like:

    public class TeePrintStream extends PrintStream {
        private final PrintStream second;

        public TeePrintStream(OutputStream main, PrintStream second) {
            super(main);
            this.second = second;
        }

        /**
         * Closes the main stream. 
         * The second stream is just flushed but <b>not</b> closed.
         * @see java.io.PrintStream#close()
         */
        @Override
        public void close() {
            // just for documentation
            super.close();
        }

        @Override
        public void flush() {
            super.flush();
            second.flush();
        }

        @Override
        public void write(byte[] buf, int off, int len) {
            super.write(buf, off, len);
            second.write(buf, off, len);
        }

        @Override
        public void write(int b) {
            super.write(b);
            second.write(b);
        }

        @Override
        public void write(byte[] b) throws IOException {
            super.write(b);
            second.write(b);
        }
    }

and used as in:

    FileOutputStream file = new FileOutputStream("test.txt");
    TeePrintStream tee = new TeePrintStream(file, System.out);
    System.setOut(tee);

(just an idea, not complete)

Ok I'm not sure what's up with these answers but I'll let you know what worked for me as advised by a senior dev at my work. I'm working in Ruby on Rails and using Facebook's JavaScript code to get access tokens.

Problem: To do authentication, Facebook is taking the url from your address bar and comparing that with what they have on file. They don't allow you to use localhost:3000 for whatever reason. However, you can use a completely made-up domain name like yoursite.dev by running a local server and pointing yoursite.dev to 127.0.0.1:3000 or wherever your localhost was pointing to.

Step 1: Install or update Nginx

$ brew install nginx (install) or $ brew upgrade nginx (update)

Step 2: Open up your nginx config file

/usr/local/etc/nginx/nginx.conf (usually here)

/opt/boxen/config/nginx/nginx.conf(if you use Boxen)

Step 3 Add this bit of code into your http {} block

Replace proxy_pass with wherever you want to point yoursite.dev to. In my case it was replacing localhost:3000 or the equivalent 127.0.0.1:3000

server {
  listen       yoursite.dev:80;
  server_name  yoursite.dev;
  location / {
    proxy_pass http://127.0.0.1:3000;
  }
}

Step 4: Edit your hosts file, in /etc/hosts on Mac to include

127.0.0.1   yoursite.dev

This file directs domains to localhost. Nginx listens in on localhost and redirects if it matches a rule.

Step 5: Every time you use your dev environment going forward, you use the yoursite.dev in the address bar instead of localhost:3000 so Facebook logs you in correctly.

Set LDFLAGS and CFLAGS when you run make:

$ LDFLAGS="-L/home/me/local/lib" CFLAGS="-I/home/me/local/include" make

If you don't want to do that a gazillion times, export these in your .bashrc (or your shell equivalent). Also set LD_LIBRARY_PATH to include /home/me/local/lib:

export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/home/me/local/lib

I usually do it using add_all.

from app import session
from models import User

objects = [User(name="u1"), User(name="u2"), User(name="u3")]
session.add_all(objects)
session.commit()

You could use module scope. Say you have a module called utils:

f_value = 'foo'

def f():
    return f_value

f_value is a module attribute that can be modified by any other module that imports it. As modules are singletons, any change to utils from one module will be accessible to all other modules that have it imported:

>> import utils
>> utils.f()
'foo'
>> utils.f_value = 'bar'
>> utils.f()
'bar'

Note that you can import the function by name:

>> import utils
>> from utils import f
>> utils.f_value = 'bar'
>> f()
'bar'

But not the attribute:

>> from utils import f, f_value
>> f_value = 'bar'
>> f()
'foo'

This is because you're labeling the object referenced by the module attribute as f_value in the local scope, but then rebinding it to the string bar, while the function f is still referring to the module attribute.

This may not be an option for you, but if you can use the Parallel Extension for .NET then you could use Tasks instead of raw threads and then use Task.WaitAll() to wait for them to complete.

i have used this code given below

 CustomerType = ((EnumCustomerType)(cus.CustomerType)).ToString()

For anyone that also need to add into 2d associative array, you can also use answer given above, and use the code like this

 $data[$category]["test"] = $question

you can then call it (to test out the result by:

echo $data[$category]["test"];

which should print $question

Update for mid 2016:

The things are changing so fast that if it's late 2017 this answer might not be up to date anymore!

Beginners can quickly get lost in choice of build tools and workflows, but what's most up to date in 2016 is not using Bower, Grunt or Gulp at all! With help of Webpack you can do everything directly in NPM!

• Google "npm as build tool" result: https://medium.com/@dabit3/introduction-to-using-npm-as-a-build-tool-b41076f488b0#.c33e74tsa

• Webpack: https://webpack.github.io/docs/installation.html

Don't get me wrong people use other workflows and I still use GULP in my legacy project(but slowly moving out of it), but this is how it's done in the best companies and developers working in this workflow make a LOT of money!

Look at this template it's a very up-to-date setup consisting of a mixture of the best and the latest technologies: https://github.com/coryhouse/react-slingshot

• Webpack
• NPM as a build tool (no Gulp, Grunt or Bower)
• React with Redux
• ESLint
• the list is long. Go and explore!

Your questions:

When I want to add a package (and check in the dependency into git), where does it belong - into package.json or into bower.json

• Everything belongs in package.json now

• Dependencies required for build are in "devDependencies" i.e. npm install require-dir --save-dev (--save-dev updates your package.json by adding an entry to devDependencies)

• Dependencies required for your application during runtime are in "dependencies" i.e. npm install lodash --save (--save updates your package.json by adding an entry to dependencies)

If that is the case, when should I ever install packages explicitly like that without adding them to the file that manages dependencies (apart from installing command line tools globally)?

Always. Just because of comfort. When you add a flag (--save-dev or --save) the file that manages deps (package.json) gets updated automatically. Don't waste time by editing dependencies in it manually. Shortcut for npm install --save-dev package-name is npm i -D package-name and shortcut for npm install --save package-name is npm i -S package-name

Why use anything else?

  mkdir(...);

Swift 5

class User: Decodable {

    var name: String
    var email: String
    var token: String

    enum CodingKeys: String, CodingKey {
        case name
        case email
        case token
    }

    public required init(from decoder: Decoder) throws {
        let container = try decoder.container(keyedBy: CodingKeys.self)
        self.name = try container.decode(String.self, forKey: .name)
        self.email = try container.decode(String.self, forKey: .email)
        self.token = try container.decode(String.self, forKey: .token)
    }
}

Alamofire API

    Alamofire.request("url.endpoint/path", method: .get, parameters: params, encoding: URLEncoding.queryString, headers: nil)
     .validate()
     .responseJSON { response in

        switch (response.result) {

            case .success( _):

            do {
                let users = try JSONDecoder().decode([User].self, from: response.data!)
                print(users)

            } catch let error as NSError {
                print("Failed to load: \(error.localizedDescription)")
            }

             case .failure(let error):
                print("Request error: \(error.localizedDescription)")
         }

Instead of using loops and counting each element or using and third party library we can simply typecast the iterable in ArrayList and get its size.

((ArrayList) iterable).size();

I had got the same problem and this following code answered perfectly at this problem :

//Identificate separator
string boundary = "---------------------------" + DateTime.Now.Ticks.ToString("x");
//Encoding
byte[] boundarybytes = System.Text.Encoding.ASCII.GetBytes("\r\n--" + boundary + "\r\n");

//Creation and specification of the request
HttpWebRequest wr = (HttpWebRequest)WebRequest.Create(url); //sVal is id for the webService
wr.ContentType = "multipart/form-data; boundary=" + boundary;
wr.Method = "POST";
wr.KeepAlive = true;
wr.Credentials = System.Net.CredentialCache.DefaultCredentials;

string sAuthorization = "login:password";//AUTHENTIFICATION BEGIN
byte[] toEncodeAsBytes = System.Text.ASCIIEncoding.ASCII.GetBytes(sAuthorization);
string returnValue = System.Convert.ToBase64String(toEncodeAsBytes);
wr.Headers.Add("Authorization: Basic " + returnValue); //AUTHENTIFICATION END
Stream rs = wr.GetRequestStream();


string formdataTemplate = "Content-Disposition: form-data; name=\"{0}\"\r\n\r\n{1}"; //For the POST's format

//Writting of the file
rs.Write(boundarybytes, 0, boundarybytes.Length);
byte[] formitembytes = System.Text.Encoding.UTF8.GetBytes(Server.MapPath("questions.pdf"));
rs.Write(formitembytes, 0, formitembytes.Length);

rs.Write(boundarybytes, 0, boundarybytes.Length);

string headerTemplate = "Content-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"\r\nContent-Type: {2}\r\n\r\n";
string header = string.Format(headerTemplate, "file", "questions.pdf", contentType);
byte[] headerbytes = System.Text.Encoding.UTF8.GetBytes(header);
rs.Write(headerbytes, 0, headerbytes.Length);

FileStream fileStream = new FileStream(Server.MapPath("questions.pdf"), FileMode.Open, FileAccess.Read);
byte[] buffer = new byte[4096];
int bytesRead = 0;
while ((bytesRead = fileStream.Read(buffer, 0, buffer.Length)) != 0)
{
    rs.Write(buffer, 0, bytesRead);
}
fileStream.Close();

byte[] trailer = System.Text.Encoding.ASCII.GetBytes("\r\n--" + boundary + "--\r\n");
rs.Write(trailer, 0, trailer.Length);
rs.Close();
rs = null;

WebResponse wresp = null;
try
{
    //Get the response
    wresp = wr.GetResponse();
    Stream stream2 = wresp.GetResponseStream();
    StreamReader reader2 = new StreamReader(stream2);
    string responseData = reader2.ReadToEnd();
}
catch (Exception ex)
{
    string s = ex.Message;
}
finally
{
    if (wresp != null)
    {
        wresp.Close();
        wresp = null;
    }
    wr = null;
}

How about just:

UITextField *textField = [[UITextField alloc] initWithFrame:CGRectMake(20, 20, 280, 32)];
textField.borderStyle = UITextBorderStyleRoundedRect;
[self addSubview:textField];

I don't know about Java, but in C# (Xamarin.Android) there is no need to look up the fragment everytime you need to call the method, see below:

public class BrandActivity : Activity
{
    MyFragment myFragment;

    protected override void OnCreate(Bundle bundle)
    {       
        // ...
        myFragment = new MyFragment();      
        // ...
    }

    void someMethod()
    {
        myFragment.MyPublicMethod();
    }
}

public class MyFragment : Android.Support.V4.App.Fragment
{
    public override void OnCreate(Bundle bundle)
    {
        // ...
    }

    public override View OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle bundle)
    {
        // ...
    }

    public void MyPublicMethod()
    {
        // ...
    }   
}

I think in Java you can do the same.

CSS

input[type="date"] {position: relative;}_x000D_
input[type="date"]:before {_x000D_
 position: absolute;left: 0px;top: 0px;_x000D_
 content: "Enter DOB";_x000D_
 color: #999;_x000D_
 width: 100%;line-height: 32px;_x000D_
}_x000D_
input[type="date"]:valid:before {display: none;}

<input type="date" required />

You can use date filter to convert in date and display in specific format.

In .ts file (typescript):

let dateString = '1968-11-16T00:00:00' 
let newDate = new Date(dateString);

In HTML:

{{dateString |  date:'MM/dd/yyyy'}}

Below are some formats which you can implement :

Backend:

public todayDate = new Date();

HTML :

<select>
<option value=""></option>
<option value="MM/dd/yyyy">[{{todayDate | date:'MM/dd/yyyy'}}]</option>
<option value="EEEE, MMMM d, yyyy">[{{todayDate | date:'EEEE, MMMM d, yyyy'}}]</option>
<option value="EEEE, MMMM d, yyyy h:mm a">[{{todayDate | date:'EEEE, MMMM d, yyyy h:mm a'}}]</option>
<option value="EEEE, MMMM d, yyyy h:mm:ss a">[{{todayDate | date:'EEEE, MMMM d, yyyy h:mm:ss a'}}]</option>
<option value="MM/dd/yyyy h:mm a">[{{todayDate | date:'MM/dd/yyyy h:mm a'}}]</option>
<option value="MM/dd/yyyy h:mm:ss a">[{{todayDate | date:'MM/dd/yyyy h:mm:ss a'}}]</option>
<option value="MMMM d">[{{todayDate | date:'MMMM d'}}]</option>   
<option value="yyyy-MM-ddTHH:mm:ss">[{{todayDate | date:'yyyy-MM-ddTHH:mm:ss'}}]</option>
<option value="h:mm a">[{{todayDate | date:'h:mm a'}}]</option>
<option value="h:mm:ss a">[{{todayDate | date:'h:mm:ss a'}}]</option>      
<option value="EEEE, MMMM d, yyyy hh:mm:ss a">[{{todayDate | date:'EEEE, MMMM d, yyyy hh:mm:ss a'}}]</option>
<option value="MMMM yyyy">[{{todayDate | date:'MMMM yyyy'}}]</option> 
</select>

In case you wonder, In Bootstrap templating system (which is very accurate), here is how they divide the columns when you apply the class .col-md-4 (1/3 of the 12 column system)

CSS

.col-md-4{
    float: left;
    width: 33.33333333%;
}

I'm not a fan of float, but if you really want your element to be perfectly 1/3 of your page, then you don't have a choice because sometimes when you use inline-block element, browser can consider space in your HTML as a 1px space which would break your perfect 1/3. Hope it helped !

In .NET you can use grouping to your advantage like this:

http://regexhero.net/tester/?id=65b32601-2326-4ece-912b-6dcefd883f31

You'll notice that:

(ABC)|(.)

Will grab everything except ABC in the 2nd group. Parenthesis surround each group. So (ABC) is group 1 and (.) is group 2.

So you just grab the 2nd group like this in a replace:

$2

Or in .NET look at the Groups collection inside the Regex class for a little more control.

You should be able to do something similar in most other regex implementations as well.

UPDATE: I found a much faster way to do this here: http://regexhero.net/tester/?id=997ce4a2-878c-41f2-9d28-34e0c5080e03

It still uses grouping (I can't find a way that doesn't use grouping). But this method is over 10X faster than the first.

You can get rid of the first line. You don't need import java.lang.*;

Just change your 5th line to:

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

Try -

$("#column_select").change(function () {
    $("#layout_select").children('option').hide();
    $("#layout_select").children("option[value^=" + $(this).val() + "]").show()
})  

If you were going to use this solution you'd need to hide all of the elements apart from the one with the 'none' value in your document.ready function -

$(document).ready(function() {
    $("#layout_select").children('option:gt(0)').hide();
    $("#column_select").change(function() {
        $("#layout_select").children('option').hide();
        $("#layout_select").children("option[value^=" + $(this).val() + "]").show()
    })
})

Demo - http://jsfiddle.net/Mxkfr/2

EDIT

I might have got a bit carried away with this, but here's a further example that uses a cache of the original select list options to ensure that the 'layout_select' list is completely reset/cleared (including the 'none' option) after the 'column_select' list is changed -

$(document).ready(function() {
    var optarray = $("#layout_select").children('option').map(function() {
        return {
            "value": this.value,
            "option": "<option value='" + this.value + "'>" + this.text + "</option>"
        }
    })

    $("#column_select").change(function() {
        $("#layout_select").children('option').remove();
        var addoptarr = [];
        for (i = 0; i < optarray.length; i++) {
            if (optarray[i].value.indexOf($(this).val()) > -1) {
                addoptarr.push(optarray[i].option);
            }
        }
        $("#layout_select").html(addoptarr.join(''))
    }).change();
})

Demo - http://jsfiddle.net/N7Xpb/1/

Well basically this error is saying, that you had a unique index on a particular field for example: "email_address", so mongodb expects unique email address value for each document in the collection.

So let's say, earlier in your schema the unique index was not defined, and then you signed up 2 users with the same email address or with no email address (null value).

Later, you saw that there was a mistake. so you try to correct it by adding a unique index to the schema. But your collection already has duplicates, so the error message says that you can't insert a duplicate value again.

You essentially have three options:

1. Drop the collection

   db.users.drop();

2. Find the document which has that value and delete it. Let's say the value was null, you can delete it using:

   db.users.remove({ email_address: null });

3. Drop the Unique index:

   db.users.dropIndex(indexName)

I Hope this helped :)

set style="height:300px !important;" and "imgBanner" for img tag.

<img src="/image/1.jpg" class="imgBanner" style="width:100%; height:300px !important;">

then if you want responsive image, so you can use jquery as:

$.(function(){
   $(window).resize(respWhenResize);
   respWhenResize();
 })



respWhenResize(){
 
       if (pagesize < 578) {
         $('.imgBanner').css('height','200px')
        } else if (pagesize > 578 ) {
            $('.imgBanner').css('height','300px')
        }
     }

function openInNewTab(href) {
  Object.assign(document.createElement('a'), {
    target: '_blank',
    href: href,
  }).click();
}

It creates a virtual a element, gives it target="_blank" so it opens in a new tab, gives it proper url href and then clicks it.

and then you can use it like:

openInNewTab("https://google.com"); 

Important note:

openInNewTab (as well as any other solution on this page) must be called during the so-called 'trusted event' callback - eg. during click event (not necessary in callback function directly, but during click action). Otherwise opening a new page will be blocked by the browser

If you call it manually at some random moment (e.g., inside an interval or after server response) - it might be blocked by the browser (which makes sense as it'd be a security risk and might lead to poor user experience)

I just wanted to contribute this should someone be looking for help with adding separators between the strings, depending on whether a field is NULL or not.

So in the example of creating a one line address from separate fields

Address1, Address2, Address3, City, PostCode

in my case, I have the following Calculated Column which seems to be working as I want it:

case 
    when [Address1] IS NOT NULL 
    then (((          [Address1]      + 
          isnull(', '+[Address2],'')) +
          isnull(', '+[Address3],'')) +
          isnull(', '+[City]    ,'')) +
          isnull(', '+[PostCode],'')  
end

Hope that helps someone!

Maybe these

• JArgs command line option parsing suite for Java - this tiny project provides a convenient, compact, pre-packaged and comprehensively documented suite of command line option parsers for the use of Java programmers. Initially, parsing compatible with GNU-style 'getopt' is provided.

• ritopt, The Ultimate Options Parser for Java - Although, several command line option standards have been preposed, ritopt follows the conventions prescribed in the opt package.

I don't like to use regex, so here is another simple solution.

public String removePunctuations(String s) {
    String res = "";
    for (Character c : s.toCharArray()) {
        if(Character.isLetterOrDigit(c))
            res += c;
    }
    return res;
}

Note: This will include both Letters and Digits

If want a basic way to generate a timestamp in Node.js this works well.

var time = process.hrtime();
var timestamp = Math.round( time[ 0 ] * 1e3 + time[ 1 ] / 1e6 );

Our team is using this to bust cache in a localhost environment. The output is /dist/css/global.css?v=245521377 where 245521377 is the timestamp generated by hrtime().

Hopefully this helps, the methods above can work as well but I found this to be the simplest approach for our needs in Node.js.

In a crontab file, the fields are:

• minute of the hour.
• hour of the day.
• day of the month.
• month of the year.
• day of the week.

So:

10 * * * * blah

means execute blah at 10 minutes past every hour.

If you want every five minutes, use either:

*/5 * * * * blah

meaning every minute but only every fifth one, or:

0,5,10,15,20,25,30,35,40,45,50,55 * * * * blah

for older cron executables that don't understand the */x notation.

If it still seems to be not working after that, change the command to something like:

date >>/tmp/debug_cron_pax.txt

and monitor that file to ensure something's being written every five minutes. If so, there's something wrong with your PHP scripts. If not, there's something wrong with your cron daemon.

Because there are algorithms whose best-case is quick, and thus it's technically a big O, not a big Theta.

Big O is an upper bound, big Theta is an equivalence relation.

We can do it by simple means:

In FirstActivity:

Intent intent = new Intent(FirstActivity.this, SecondActivity.class);
intent.putExtra("uid", uid.toString());
intent.putExtra("pwd", pwd.toString());
startActivity(intent);

In SecondActivity:

    try {
        Intent intent = getIntent();

        String uid = intent.getStringExtra("uid");
        String pwd = intent.getStringExtra("pwd");

    } catch (Exception e) {
        e.printStackTrace();
        Log.e("getStringExtra_EX", e + "");
    }

1st of all, when you declare a variable in java, you should declare it using Interfaces even if you specify the implementation when instantiating it

ArrayList<ArrayList<String>> listOfLists = new ArrayList<ArrayList<String>>();

should be written

List<List<String>> listOfLists = new ArrayList<List<String>>(size); 

Then you will have to instantiate all columns of your 2d array

    for(int i = 0; i < size; i++)  {
        listOfLists.add(new ArrayList<String>());
    }

And you will use it like this :

listOfLists.get(0).add("foobar");

But if you really want to "create a 2D array that each cell is an ArrayList!"

Then you must go the dijkstra way.

If you're using Java, Javascript or PHP, then there's a library that will do these calculations exactly, using some amusingly complicated (but still fast) trigonometry:

http://www.jstott.me.uk/jcoord/

I am getting a very simple solution to set ActionBar Title in either fragment or any activity without any headache.

Just modify the xml where is defined Toolbar as below :

<android.support.design.widget.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/AppTheme.AppBarOverlay">

        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:background="@color/colorPrimaryDark"
            app:popupTheme="@style/AppTheme.PopupOverlay" >

            <TextView
                style="@style/TextAppearance.AppCompat.Widget.ActionBar.Title"
                android:id="@+id/toolbar_title"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="@string/app_name"
                />
            </android.support.v7.widget.Toolbar>

    </android.support.design.widget.AppBarLayout> 

1) If you want to set the actionbar in a fragment then :

Toolbar toolbar = findViewById(R.id.toolbar);
TextView toolbarTitle = (TextView) toolbar.findViewById(R.id.toolbar_title);

For using it from anywhere, you can define a method in the activity

public void setActionBarTitle(String title) {
        toolbarTitle.setText(title);
    }

To call this method in activity, simply call it.

setActionBarTitle("Your Title")

To call this method from fragment of the activity, simply call it.

((MyActivity)getActivity()).setActionBarTitle("Your Title");

This works too:

System.DateTime dTime = DateTime.Now();

// tSpan is 0 days, 1 hours, 30 minutes and 0 second.
System.TimeSpan tSpan = new System.TimeSpan(0, 1, 3, 0); 

System.DateTime result = dTime + tSpan;

To subtract a year:

DateTime DateEnd = DateTime.Now;
DateTime DateStart = DateEnd - new TimeSpan(365, 0, 0, 0);

IN completion to above answers, you can also customize your fallbacks for each async call you do, so that each call to the generic ASYNC method will populate different data, depending on the onTaskDone stuff you put there.

  Main.FragmentCallback FC= new  Main.FragmentCallback(){
            @Override
            public void onTaskDone(String results) {

                localText.setText(results); //example TextView
            }
        };

new API_CALL(this.getApplicationContext(), "GET",FC).execute("&Books=" + Main.Books + "&args=" + profile_id);

Remind: I used interface on the main activity thats where "Main" comes, like this:

public interface FragmentCallback {
    public void onTaskDone(String results);


}

My API post execute looks like this:

  @Override
    protected void onPostExecute(String results) {

        Log.i("TASK Result", results);
        mFragmentCallback.onTaskDone(results);

    }

The API constructor looks like this:

 class  API_CALL extends AsyncTask<String,Void,String>  {

    private Main.FragmentCallback mFragmentCallback;
    private Context act;
    private String method;


    public API_CALL(Context ctx, String api_method,Main.FragmentCallback fragmentCallback) {
        act=ctx;
        method=api_method;
        mFragmentCallback = fragmentCallback;


    }

In your doSomething() function, pass in the event e and use e.preventDefault().

doSomething = function (e) {
    alert('it works!');
    e.preventDefault();
}

An example of this exception being thrown is: When you are trying to check something, that is null.

For example:

string testString = null; //Because it doesn't have a value (i.e. it's null; "Length" cannot do what it needs to do)

if (testString.Length == 0) // Throws a nullreferenceexception
{
    //Do something
} 

The .NET runtime will throw a NullReferenceException when you attempt to perform an action on something which hasn't been instantiated i.e. the code above.

In comparison to an ArgumentNullException which is typically thrown as a defensive measure if a method expects that what is being passed to it is not null.

More information is in C# NullReferenceException and Null Parameter.

<textarea name='Status'> </textarea>
<input type='button' value='Status Update'>

You have few problems with your code like using . for concatenation

Try this -

$(function () {
    $('input').on('click', function () {
        var Status = $(this).val();
        $.ajax({
            url: 'Ajax/StatusUpdate.php',
            data: {
                text: $("textarea[name=Status]").val(),
                Status: Status
            },
            dataType : 'json'
        });
    });
});

You can raise a notice in Postgres as follows:

raise notice 'Value: %', deletedContactId;

Read here

Late answer here, but if you search /etc/init.d/apache2 for 'reload', you'll find something like this:

do_reload() {
        if apache_conftest; then
                if ! pidofproc -p $PIDFILE "$DAEMON" > /dev/null 2>&1 ; then
                        APACHE2_INIT_MESSAGE="Apache2 is not running"
                        return 2
                fi
                $APACHE2CTL graceful > /dev/null 2>&1
                return $?
        else
                APACHE2_INIT_MESSAGE="The apache2$DIR_SUFFIX configtest failed. Not doing anything."
                return 2
        fi
}

Basically, what the answers that suggest using init.d, systemctl, etc are invoking is a thin wrapper that says:

• check the apache config
• if it's good, run apachectl graceful (swallowing the output, and forwarding the exit code)

This suggests that @Aruman's answer is also correct, provided you are confident there are no errors in your configuration or have already run apachctl configtest manually.

The apache documentation also supplies the same command for a graceful restart (apachectl -k graceful), and some more color on the behavior thereof.

Simple solution would be as below. This is improvement of solution from vale.

private void dgMapTable_SelectionChanged(object sender, EventArgs e) 
{
    int active_map=0;
    if(dgMapTable.SelectedRows.Count>0)
        active_map = dgMapTable.SelectedRows[0].Index;
    // User code if required Process_ROW(active_map);
}

Note for other reader, for above code to work FullRowSelect selection mode for datagridview should be used. You may extend this to give message if more than two rows selected.

I had same issue, with Latest Spring 4.1.1 onwards you need to add following jars to pom.xml.

<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-core</artifactId>
    <version>2.4.1</version>
</dependency>
<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-databind</artifactId>
    <version>2.4.1.1</version>
</dependency>

also make sure you have following jar:

<dependency>
    <groupId>org.codehaus.jackson</groupId>
    <artifactId>jackson-core-asl</artifactId>
    <version>1.9.13</version>
</dependency>

<dependency>
    <groupId>org.codehaus.jackson</groupId>
    <artifactId>jackson-mapper-asl</artifactId>
    <version>1.9.13</version>
</dependency>

406 Spring MVC Json, not acceptable according to the request "accept" headers

You can try using USING:

The optional USING clause specifies how to compute the new column value from the old; if omitted, the default conversion is the same as an assignment cast from old data type to new. A USING clause must be provided if there is no implicit or assignment cast from old to new type.

So this might work (depending on your data):

alter table presales alter column code type numeric(10,0) using code::numeric;
-- Or if you prefer standard casting...
alter table presales alter column code type numeric(10,0) using cast(code as numeric);

This will fail if you have anything in code that cannot be cast to numeric; if the USING fails, you'll have to clean up the non-numeric data by hand before changing the column type.

PHP HAS multithreading, its just not enabled by default, there is an extension called pthreads which does exactly that. You'll need php compiled with ZTS though. (Thread Safe) Links:

Examples

Another tutorial

pthreads PECL Extension

One solution is to run manually a shell function that sets my environment to work or personal, but I am pretty sure that I will often forget to switch to the correct identity resulting in committing under the wrong identity.

That was exactly my problem. I have written a hook script which warns you if you have any github remote and not defined a local username.

Here's how you set it up:

1. Create a directory to hold the global hook

   mkdir -p ~/.git-templates/hooks

2. Tell git to copy everything in ~/.git-templates to your per-project .git directory when you run git init or clone

   git config --global init.templatedir '~/.git-templates'

3. And now copy the following lines to ~/.git-templates/hooks/pre-commit and make the file executable (don't forget this otherwise git won't execute it!)

#!/bin/bash

RED='\033[0;31m' # red color
NC='\033[0m' # no color

GITHUB_REMOTE=$(git remote -v | grep github.com)
LOCAL_USERNAME=$(git config --local user.name)

if [ -n "$GITHUB_REMOTE" ] && [ -z "$LOCAL_USERNAME" ]; then
    printf "\n${RED}ATTENTION: At least one Github remote repository is configured, but no local username. "
    printf "Please define a local username that matches your Github account.${NC} [pre-commit hook]\n\n"
    exit 1
fi

If you use other hosts for your private repositories you have to replace github.com according to your needs.

Now every time you do a git init or git clone git will copy this script to the repository and executes it before any commit is done. If you have not set a local username it will output a warning and won't let you commit.

I'm guessing you're running python3, in which input(prompt) returns a string. Try this.

x=int(input('prompt'))
y=int(input('prompt'))

I installed lxml with pip in Vagrant, using Ubuntu 14.04 and had the same problem. Even though all requirements where installed, i got the same error again and again. Turned out, my VM had to little memory by default. With 1024 MB everything works fine.

Add this to your VagrantFile and lxml should properly compile / install:

config.vm.provider "virtualbox" do |vb|
  vb.memory = 1024
end

Thanks to sixhobbit for the hint (see: can't installing lxml on Ubuntu 12.04).

If you want to add a sourceSet for testing in addition to all the existing ones, within a module regardless of the active flavor:

sourceSets {
    test {
        java.srcDirs += [
                'src/customDir/test/kotlin'
        ]
        print(java.srcDirs)   // Clean
    }
}

Pay attention to the operator += and if you want to run integration tests change test to androidTest.

GL

Instead of using For each loop, use normal for loop. for example,the below code removes all the element in the array list without giving java.util.ConcurrentModificationException. You can modify the condition in the loop according to your use case.

for(int i=0; i<abc.size(); i++)  {
       e.remove(i);
 }

All you need is to force disable C.M. in IE - Just paste This code (in IE9 and under c.m. will be disabled):

<meta http-equiv="X-UA-Compatible" content="IE=9; IE=8; IE=7; IE=EDGE" />

Source: http://twigstechtips.blogspot.com/2010/03/css-ie8-meta-tag-to-disable.html

I suppose you could want to test the base functionality of an abstract class... But you'd probably be best off by extending the class without overriding any methods, and make minimum-effort mocking for the abstract methods.

 a=input()
 print(a[::-1])

The above code recieves the input from the user and prints an output that is equal to the reverse of the input by adding [::-1].

OUTPUT:

>>> Happy 
>>> yppaH

But when it comes to the case of sentences, view the code output below:

>>> Have a happy day
>>> yad yppah a evaH

But if you want only the characters of the string to be reversed and not the sequence of string, try this:

a=input().split() #Splits the input on the basis of space (" ")
for b in a: #declares that var (b) is any value in the list (a)
    print(b[::-1], end=" ") #End declares to print the character in its quotes (" ") without a new line.

In the above code in line 2 in I said that ** variable b is any value in the list (a)** I said var a to be a list because when you use split in an input the variable of the input becomes a list. Also remember that split can't be used in the case of int(input())

OUTPUT:

>>> Have a happy day
>>> evaH a yppah yad

If we don't add end(" ") in the above code then it will print like the following:

>>> Have a happy day
>>> evaH
>>> a
>>> yppah
>>> yad

Below is an example to understand end():

CODE:

for i in range(1,6):
     print(i) #Without end()

OUTPUT:

>>> 1
>>> 2
>>> 3
>>> 4
>>> 5

Now code with end():

for i in range(1,6):
    print(i, end=" || ")

OUTPUT:

>>> 1 || 2 || 3 || 4 || 5 ||

You could do

matcher = re.compile('MICHAEL89', re.IGNORECASE)
filter(matcher.match, USERNAMES) 

Update: played around a bit and am thinking you could get a better short-circuit type approach using

matcher = re.compile('MICHAEL89', re.IGNORECASE)
if any( ifilter( matcher.match, USERNAMES ) ):
    #your code here

The ifilter function is from itertools, one of my favorite modules within Python. It's faster than a generator but only creates the next item of the list when called upon.

Answer from official website

https://datatables.net/reference/option/columns.width

$('#example').dataTable({
    "columnDefs": [
        {
            "width": "20%",
            "targets": 0
        }
    ]
});

Real programmers do it with semaphores.

Have a variable set to 0. Increment it before each AJAX call. Decrement it in each success handler, and test for 0. If it is, you're done.

If the <div> has id or name then you can use find_element_by_id or find_element_by_name

You can also try with class name, css and xpath

find_element_by_class_name
find_element_by_css_selector
find_element_by_xpath

Kernighan & Plauger's Elements of Programming Style. It illustrates the difference between gimmicky-clever and elegant-clever.

connect timeout has to be handled with a non-blocking socket (GNU LibC documentation on connect). You get connect to return immediately and then use select to wait with a timeout for the connection to complete.

This is also explained here : Operation now in progress error on connect( function) error.

int wait_on_sock(int sock, long timeout, int r, int w)
{
    struct timeval tv = {0,0};
    fd_set fdset;
    fd_set *rfds, *wfds;
    int n, so_error;
    unsigned so_len;

    FD_ZERO (&fdset);
    FD_SET  (sock, &fdset);
    tv.tv_sec = timeout;
    tv.tv_usec = 0;

    TRACES ("wait in progress tv={%ld,%ld} ...\n",
            tv.tv_sec, tv.tv_usec);

    if (r) rfds = &fdset; else rfds = NULL;
    if (w) wfds = &fdset; else wfds = NULL;

    TEMP_FAILURE_RETRY (n = select (sock+1, rfds, wfds, NULL, &tv));
    switch (n) {
    case 0:
        ERROR ("wait timed out\n");
        return -errno;
    case -1:
        ERROR_SYS ("error during wait\n");
        return -errno;
    default:
        // select tell us that sock is ready, test it
        so_len = sizeof(so_error);
        so_error = 0;
        getsockopt (sock, SOL_SOCKET, SO_ERROR, &so_error, &so_len);
        if (so_error == 0)
            return 0;
        errno = so_error;
        ERROR_SYS ("wait failed\n");
        return -errno;
    }
}

A little bug with indexcolumn in alexander's answer: We need to take care of "not found" column:

int GetColumnIndexByName(GridViewRow row, string columnName)
{
    int columnIndex = 0;
    int foundIndex=-1;
    foreach (DataControlFieldCell cell in row.Cells)
    {
        if (cell.ContainingField is BoundField)
        {
            if (((BoundField)cell.ContainingField).DataField.Equals(columnName))
            {
                foundIndex=columnIndex;
                break;
            }
        }
        columnIndex++; // keep adding 1 while we don't have the correct name
    }
    return foundIndex;
}

and

protected void GridView_RowDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        int index = GetColumnIndexByName(e.Row, "myDataField");
        if( index>0)
        {
            string columnValue = e.Row.Cells[index].Text;
        }
    }
}

You can tweak the settings of the code formatting. I always turn off all extra line breaks, and then it works fine for how I format the code.

If you tweak the settings as close as you can to your preference, that should leave you minimal work whenever you use refactoring.

Adding a MouseLeftButtonDown event handler to the MainWindow worked for me.

In the event function that gets automatically generated, add the below code:

base.OnMouseLeftButtonDown(e);
this.DragMove();

I recently discovered a specialized class that's awesome for a bulk insert (ODP.NET). Oracle.DataAccess.Client.OracleBulkCopy! It takes a datatable as a parameter, then you call WriteTOServer method...it is very fast and effective, good luck!!

A quick search of the docs for the ListView class has turned up getChildCount() and getChildAt() methods inherited from ViewGroup. Can you iterate through them using these? I'm not sure but it's worth a try.

Found it here

It works for me

.page-bg {
  background: url("res://background");
  background-position: center center;
  background-repeat: no-repeat;
  background-size: 100% 100%;
}

If none of the above is working, you are probably working on EDI trasaction where you need to validate your result against an HIPPA schema or any other complex xsd for that matter. The requirement is that, say there 8 REF segments and any of them have to appear in any order and also not all are required, means to say you may have them in following order 1st REF, 3rd REF , 2nd REF, 9th REF. Under default situation EDI receive will fail, beacause default complex type is

<xs:sequence>
  <xs:element.../>
</xs:sequence>

The situation is even complex when you are calling your element by refrence and then that element in its original spot is quite complex itself. for example:

<xs:element>
<xs:complexType>
<xs:sequence>
<element name="REF1"  ref= "REF1_Mycustomelment" minOccurs="0" maxOccurs="1">
<element name="REF2"  ref= "REF2_Mycustomelment" minOccurs="0" maxOccurs="1">
<element name="REF3"  ref= "REF3_Mycustomelment" minOccurs="0" maxOccurs="1">
</xs:sequence>
</xs:complexType>
</xs:element>

Solution:

Here simply replacing "sequence" with "all" or using "choice" with min/max combinations won't work!

First thing replace "xs:sequence" with "<xs:all>" Now,You need to make some changes where you are Referring the element from, There go to:

<xs:annotation>
  <xs:appinfo>
    <b:recordinfo structure="delimited" field.........Biztalk/2003">

***Now in the above segment add trigger point in the end like this trigger_field="REF01_...complete name.." trigger_value = "38" Do the same for other REF segments where trigger value will be different like say "18", "XX" , "YY" etc..so that your record info now looks like:b:recordinfo structure="delimited" field.........Biztalk/2003" trigger_field="REF01_...complete name.." trigger_value="38">

This will make each element unique, reason being All REF segements (above example) have same structure like REF01, REF02, REF03. And during validation the structure validation is ok but it doesn't let the values repeat because it tries to look for remaining values in first REF itself. Adding triggers will make them all unique and they will pass in any order and situational cases (like use 5 out 9 and not all 9/9).

Hope it helps you, for I spent almost 20 hrs on this.

Good Luck

Why all this code in the samples above...

A struct with explicit layout acts both ways and has no performance hit.

Update: Since there's a question on how to deal with endianness I added an interface that illustrates how to abstract that. Another implementing struct can deal with the opposite case

public interface IIntToByte
{
    Int32 Int { get; set;}

    byte B0 { get; }
    byte B1 { get; }
    byte B2 { get; }
    byte B3 { get; }
}

[StructLayout(LayoutKind.Explicit)]
public struct IntToByteLE : UserQuery.IIntToByte
{
    [FieldOffset(0)]
    public Int32 IntVal;

    [FieldOffset(0)]
    public byte b0;
    [FieldOffset(1)]
    public byte b1;
    [FieldOffset(2)]
    public byte b2;
    [FieldOffset(3)]
    public byte b3;

    public Int32 Int {
        get{ return IntVal; }
        set{ IntVal = value;}
    }

    public byte B0 => b0;
    public byte B1 => b1;
    public byte B2 => b2;
    public byte B3 => b3; 
}

After hours of debugging I could only get this to work using the following packages:

requests[security]==2.7.0  # not 2.18.1
cryptography==1.9  # not 2.0

using OpenSSL 1.0.2g 1 Mar 2016

Without these packages verify=False was not working.

I hope this helps someone.

For this specific error, I installed version 20 of Crystal Report and it solved my problem: https://www.tektutorialshub.com/crystal-reports/crystal-reports-download-for-visual-studio/#Service-Pack-16

You can also download the file alone using the following link https://www.nuget.org/api/v2/package/log4net/1.2.10 rename the file to .zip and extract it.

Try:

var myUrl = "my.aspx?val=%2Fxyz2F";
var decodeUrl = System.Uri.UnescapeDataString(myUrl);

public string ReplaceFirst(string text, string search, string replace)
{
  int pos = text.IndexOf(search);
  if (pos < 0)
  {
    return text;
  }
  return text.Substring(0, pos) + replace + text.Substring(pos + search.Length);
}

here is an Extension Method that could also work as well per VoidKing request

public static class StringExtensionMethods
{
    public static string ReplaceFirst(this string text, string search, string replace)
    {
      int pos = text.IndexOf(search);
      if (pos < 0)
      {
        return text;
      }
      return text.Substring(0, pos) + replace + text.Substring(pos + search.Length);
    }
}

The syntax for index hints is documented here:
http://dev.mysql.com/doc/refman/5.6/en/index-hints.html

FORCE INDEX goes right after the table reference:

SELECT * FROM (
    SELECT owner_id,
           product_id,
           start_time,
           price,
           currency,
           name,
           closed,
           active,
           approved,
           deleted,
           creation_in_progress
    FROM db_products FORCE INDEX (products_start_time)
    ORDER BY start_time DESC
) as resultstable
WHERE resultstable.closed = 0
      AND resultstable.active = 1
      AND resultstable.approved = 1
      AND resultstable.deleted = 0
      AND resultstable.creation_in_progress = 0
GROUP BY resultstable.owner_id
ORDER BY start_time DESC

WARNING:

If you're using ORDER BY before GROUP BY to get the latest entry per owner_id, you're using a nonstandard and undocumented behavior of MySQL to do that.

There's no guarantee that it'll continue to work in future versions of MySQL, and the query is likely to be an error in any other RDBMS.

Search the greatest-n-per-group tag for many explanations of better solutions for this type of query.

You should use profiles.

<profiles>
    <profile>
        <id>otherOutputDir</id>
        <build>
            <directory>yourDirectory</directory>
        </build>
    </profile>
</profiles>

And start maven with your profile

mvn compile -PotherOutputDir

If you really want to define your directory from the command line you could do something like this (NOT recommended at all) :

<properties>
    <buildDirectory>${project.basedir}/target</buildDirectory>
</properties>

<build>
    <directory>${buildDirectory}</directory>
</build>

And compile like this :

mvn compile -DbuildDirectory=test

That's because you can't change the target directory by using -Dproject.build.directory

Unmanaged object:

• Marshal.SizeOf(object yourObj);

Value Types:

• sizeof(object val)

Managed object:

• Looks like there is no direct way to get for managed objects, Ref: https://devblogs.microsoft.com/cbrumme/size-of-a-managed-object/

I suggest you to see "How do I run a bat file in the background from another bat file?"

Also, good answer (of using start command) was given in "Parallel execution of shell processes" question page here;

But my recommendation is to use PowerShell. I believe it will perfectly suit your needs.

I would suggest using the Python Launcher for Windows utility that was introduced into Python 3.3. You can manually download and install it directly from the author's website for use with earlier versions of Python 2 and 3.

Regardless of how you obtain it, after installation it will have associated itself with all the standard Python file extensions (i.e. .py, .pyw, .pyc, and .pyo files). You'll not only be able to explicitly control which version is used at the command-prompt, but also on a script-by-script basis by adding Linux/Unix-y shebang #!/usr/bin/env pythonX comments at the beginning of your Python scripts.