Indexing a list is done using double bracket, i.e. hypo_list[[1]] (e.g. have a look here: http://www.r-tutor.com/r-introduction/list). BTW: read.table does not return a table but a dataframe (see value section in ?read.table). So you will have a list of dataframes, rather than a list of table objects. The principal mechanism is identical for tables and dataframes though.

Note: In R, the index for the first entry is a 1 (not 0 like in some other languages).

Dataframes

l <- list(anscombe, iris)   # put dfs in list
l[[1]]             # returns anscombe dataframe

anscombe[1:2, 2]   # access first two rows and second column of dataset
[1] 10  8

l[[1]][1:2, 2]     # the same but selecting the dataframe from the list first
[1] 10  8

Table objects

tbl1 <- table(sample(1:5, 50, rep=T))
tbl2 <- table(sample(1:5, 50, rep=T))
l <- list(tbl1, tbl2)  # put tables in a list

tbl1[1:2]              # access first two elements of table 1 

Now with the list

l[[1]]                 # access first table from the list

1  2  3  4  5 
9 11 12  9  9 

l[[1]][1:2]            # access first two elements in first table

1  2 
9 11 

There are lots of great answers which discuss differences in the use cases for each function. None of the answer discuss the differences in performance. That is reasonable cause various functions expects various input and produces various output, yet most of them have a general common objective to evaluate by series/groups. My answer is going to focus on performance. Due to above the input creation from the vectors is included in the timing, also the apply function is not measured.

I have tested two different functions sum and length at once. Volume tested is 50M on input and 50K on output. I have also included two currently popular packages which were not widely used at the time when question was asked, data.table and dplyr. Both are definitely worth to look if you are aiming for good performance.

library(dplyr)
library(data.table)
set.seed(123)
n = 5e7
k = 5e5
x = runif(n)
grp = sample(k, n, TRUE)

timing = list()

# sapply
timing[["sapply"]] = system.time({
    lt = split(x, grp)
    r.sapply = sapply(lt, function(x) list(sum(x), length(x)), simplify = FALSE)
})

# lapply
timing[["lapply"]] = system.time({
    lt = split(x, grp)
    r.lapply = lapply(lt, function(x) list(sum(x), length(x)))
})

# tapply
timing[["tapply"]] = system.time(
    r.tapply <- tapply(x, list(grp), function(x) list(sum(x), length(x)))
)

# by
timing[["by"]] = system.time(
    r.by <- by(x, list(grp), function(x) list(sum(x), length(x)), simplify = FALSE)
)

# aggregate
timing[["aggregate"]] = system.time(
    r.aggregate <- aggregate(x, list(grp), function(x) list(sum(x), length(x)), simplify = FALSE)
)

# dplyr
timing[["dplyr"]] = system.time({
    df = data_frame(x, grp)
    r.dplyr = summarise(group_by(df, grp), sum(x), n())
})

# data.table
timing[["data.table"]] = system.time({
    dt = setnames(setDT(list(x, grp)), c("x","grp"))
    r.data.table = dt[, .(sum(x), .N), grp]
})

# all output size match to group count
sapply(list(sapply=r.sapply, lapply=r.lapply, tapply=r.tapply, by=r.by, aggregate=r.aggregate, dplyr=r.dplyr, data.table=r.data.table), 
       function(x) (if(is.data.frame(x)) nrow else length)(x)==k)
#    sapply     lapply     tapply         by  aggregate      dplyr data.table 
#      TRUE       TRUE       TRUE       TRUE       TRUE       TRUE       TRUE 

# print timings
as.data.table(sapply(timing, `[[`, "elapsed"), keep.rownames = TRUE
              )[,.(fun = V1, elapsed = V2)
                ][order(-elapsed)]
#          fun elapsed
#1:  aggregate 109.139
#2:         by  25.738
#3:      dplyr  18.978
#4:     tapply  17.006
#5:     lapply  11.524
#6:     sapply  11.326
#7: data.table   2.686

You can do it in the following way:

 myfxn <- function(var1,var2,var3){
      var1*var2*var3

    }

    lapply(1:3,myfxn,var2=2,var3=100)

and you will get the answer:

[[1]] [1] 200

[[2]] [1] 400

[[3]] [1] 600

On the contrary, I do think working with list makes it easy to automate such things.

Here is one solution (I stored your four dataframes in folder temp/).

filenames <- list.files("temp", pattern="*.csv", full.names=TRUE)
ldf <- lapply(filenames, read.csv)
res <- lapply(ldf, summary)
names(res) <- substr(filenames, 6, 30)

It is important to store the full path for your files (as I did with full.names), otherwise you have to paste the working directory, e.g.

filenames <- list.files("temp", pattern="*.csv")
paste("temp", filenames, sep="/")

will work too. Note that I used substr to extract file names while discarding full path.

You can access your summary tables as follows:

> res$`df4.csv`
       A              B        
 Min.   :0.00   Min.   : 1.00  
 1st Qu.:1.25   1st Qu.: 2.25  
 Median :3.00   Median : 6.00  
 Mean   :3.50   Mean   : 7.00  
 3rd Qu.:5.50   3rd Qu.:10.50  
 Max.   :8.00   Max.   :16.00  

If you really want to get individual summary tables, you can extract them afterwards. E.g.,

for (i in 1:length(res))
  assign(paste(paste("df", i, sep=""), "summary", sep="."), res[[i]])

The common practice is to put scripts in a discrete folder, typically at the root of the site. So, if clock.js lived here:

/js/clock.js

then you could add this code to the top of any page in your site and it would just work:

<script src="/js/clock.js" type="text/javascript"></script>

Start by adding a regular matInput to your template. Let's assume you're using the formControl directive from ReactiveFormsModule to track the value of the input.

Reactive forms provide a model-driven approach to handling form inputs whose values change over time. This guide shows you how to create and update a simple form control, progress to using multiple controls in a group, validate form values, and implement more advanced forms.

import { FormsModule, ReactiveFormsModule } from "@angular/forms"; //this to use ngModule

...

imports: [
    BrowserModule,
    AppRoutingModule,
    HttpModule,
    FormsModule,
    RouterModule,
    ReactiveFormsModule,
    BrowserAnimationsModule,
    MaterialModule],

Option 1: Hinting default image name

The name of the image generated by docker-compose depends on the folder name by default but you can override it by using --project-name argument:

$ docker-compose --project-name foo build bar
$ docker images foo_bar

Option 2: Specifying image name

Once docker-compose 1.6.0 is out, you may specify build: and image: to have an explicit image name (see arulraj.net's answer).

Option 3: Create image from container

A third is to create an image from the container:

$ docker-compose up -d bar
$ docker commit $(docker-compose ps -q bar) foo_bar
$ docker-compose rm -f bar

<select disabled="disabled">
    ....
</select>
<input type="hidden" name="select_name" value="selected value" />

Where select_name is the name that you would normally give the <select>.

Another option.

<select name="myselect" disabled="disabled">
    <option value="myselectedvalue" selected="selected">My Value</option>
    ....
</select>
<input type="hidden" name="myselect" value="myselectedvalue" />

Now with this one, I have noticed that depending on what webserver you are using, you may have to put the hidden input either before, or after the <select>.

If my memory serves me correctly, with IIS, you put it before, with Apache you put it after. As always, testing is key.

The full code then would be this:

if (!Array.prototype.indexOf) {
    Array.prototype.indexOf = function(obj, start) {
         for (var i = (start || 0), j = this.length; i < j; i++) {
             if (this[i] === obj) { return i; }
         }
         return -1;
    }
}

For a really thorough answer and code to this as well as other array functions check out Stack Overflow question Fixing JavaScript Array functions in Internet Explorer (indexOf, forEach, etc.).

Try:

Iterator<Map.Entry<String,String>> iter = testMap.entrySet().iterator();
while (iter.hasNext()) {
    Map.Entry<String,String> entry = iter.next();
    if("Sample".equalsIgnoreCase(entry.getValue())){
        iter.remove();
    }
}

With Java 1.8 and onwards you can do the above in just one line:

testMap.entrySet().removeIf(entry -> "Sample".equalsIgnoreCase(entry.getValue()));

If you want the column names of your dataframe, you can use the pyspark.sql class. I'm not sure if the SDK supports explicitly indexing a DF by column name. I received this traceback:

>>> df.columns['High'] Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: list indices must be integers, not str

However, calling the columns method on your dataframe, which you have done, will return a list of column names:

df.columns will return ['Date', 'Open', 'High', 'Low', 'Close', 'Volume', 'Adj Close']

If you want the column datatypes, you can call the dtypes method:

df.dtypes will return [('Date', 'timestamp'), ('Open', 'double'), ('High', 'double'), ('Low', 'double'), ('Close', 'double'), ('Volume', 'int'), ('Adj Close', 'double')]

If you want a particular column, you'll need to access it by index:

df.columns[2] will return 'High'

From a Microsoft's script:

DECLARE @dbname nvarchar(128)
SET @dbname = N'Senna'

IF (EXISTS (SELECT name 
FROM master.dbo.sysdatabases 
WHERE ('[' + name + ']' = @dbname 
OR name = @dbname)))

-- code mine :)
PRINT 'db exists'

While you could try these settings in config file

<system.web>
    <httpRuntime requestPathInvalidCharacters="" requestValidationMode="2.0" />
    <pages validateRequest="false" />
</system.web>

I would avoid using characters like '&' in URL path replacing them with underscores.

Start Task Manager, click on the Processes tab, right-click on wscript.exe and select End Process, and confirm in the dialog that follows. This will terminate the wscript.exe that is executing your script.

I have to offer this as a better approach - you don't always have the luxury of an identity field:

UPDATE m
SET [status]=10
FROM (
  Select TOP (10) *
  FROM messages
  WHERE [status]=0
  ORDER BY [priority] DESC
) m

You can also make the sub-query as complicated as you want - joining multiple tables, etc...

Why is this better? It does not rely on the presence of an identity field (or any other unique column) in the messages table. It can be used to update the top N rows from any table, even if that table has no unique key at all.

For Spring Boot RestTemplate:

• add org.apache.httpcomponents.httpcore dependency

• use NoopHostnameVerifier for SSL factory:

  SSLContext sslContext = new SSLContextBuilder()
          .loadTrustMaterial(new URL("file:pathToServerKeyStore"), storePassword)
  //        .loadKeyMaterial(new URL("file:pathToClientKeyStore"), storePassword, storePassword)
          .build();
  SSLConnectionSocketFactory socketFactory = new SSLConnectionSocketFactory(sslContext, NoopHostnameVerifier.INSTANCE);
  CloseableHttpClient client = HttpClients.custom().setSSLSocketFactory(socketFactory).build();
  HttpComponentsClientHttpRequestFactory factory = new HttpComponentsClientHttpRequestFactory(client);
  RestTemplate restTemplate = new RestTemplate(factory);
  

I wrote an inherited class:

<?php_x000D_
class ExcelReader extends Spreadsheet_Excel_Reader { _x000D_
 _x000D_
 function GetInArray($sheet=0) {_x000D_
_x000D_
  $result = array();_x000D_
_x000D_
   for($row=1; $row<=$this->rowcount($sheet); $row++) {_x000D_
    for($col=1;$col<=$this->colcount($sheet);$col++) {_x000D_
     if(!$this->sheets[$sheet]['cellsInfo'][$row][$col]['dontprint']) {_x000D_
      $val = $this->val($row,$col,$sheet);_x000D_
      $result[$row][$col] = $val;_x000D_
     }_x000D_
    }_x000D_
   }_x000D_
  return $result;_x000D_
 }_x000D_
_x000D_
}_x000D_
?>

So I can do this:

<?php_x000D_
_x000D_
 $data = new ExcelReader("any_excel_file.xls");_x000D_
 print_r($data->GetInArray());_x000D_
_x000D_
?>

During the installation of TortoiseSVN, check the Command Line Client Tools. This will create the file svn.exe inside the folder C:\Program Files\TortoiseSVN\bin.

DELETE FROM on_search WHERE search_date < NOW() - INTERVAL N DAY

Replace N with your day count

First of all.

You can use JSON to Kotlin Data class converter plugin in Android Studio for JSON mapping to POJO classes (kotlin data class). This plugin will annotate your Kotlin data class according to JSON.

Then you can use GSON converter to convert JSON to Kotlin.

Follow this Complete tutorial: Kotlin Android JSON Parsing Tutorial

If you want to parse json manually.

val **sampleJson** = """
  [
  {
   "userId": 1,
   "id": 1,
   "title": "sunt aut facere repellat provident occaecati excepturi optio 
    reprehenderit",
    "body": "quia et suscipit\nsuscipit recusandae consequuntur expedita"
   }]
   """

Code to Parse above JSON Array and its object at index 0.

var jsonArray = JSONArray(sampleJson)
for (jsonIndex in 0..(jsonArray.length() - 1)) {
Log.d("JSON", jsonArray.getJSONObject(jsonIndex).getString("title"))
}

i would recommend Modern UI for WPF .

It has a very active maintainer it is awesome and free!

I'm currently porting some projects to MUI, first (and meanwhile second) impression is just wow!

To see MUI in action you could download XAML Spy which is based on MUI.

EDIT: Using Modern UI for WPF a few months and i'm loving it!

This error you are receiving :

SQLSTATE[HY093]: Invalid parameter number: parameter was not defined

is because the number of elements in $values & $matches is not the same or $matches contains more than 1 element.

If $matches contains more than 1 element, than the insert will fail, because there is only 1 column name referenced in the query(hash)

If $values & $matches do not contain the same number of elements then the insert will also fail, due to the query expecting x params but it is receiving y data $matches.

I believe you will also need to ensure the column hash has a unique index on it as well.

Try the code here:

<?php

/*** mysql hostname ***/
$hostname = 'localhost';

/*** mysql username ***/
$username = 'root';

/*** mysql password ***/
$password = '';

try {
    $dbh = new PDO("mysql:host=$hostname;dbname=test", $username, $password);
    /*** echo a message saying we have connected ***/
    echo 'Connected to database';
    }
catch(PDOException $e)
    {
    echo $e->getMessage();
    }


$matches = array('1');
$count = count($matches);
for($i = 0; $i < $count; ++$i) {
    $values[] = '?';
}

// INSERT INTO DATABASE
$sql = "INSERT INTO hashes (hash) VALUES (" . implode(', ', $values) . ") ON DUPLICATE KEY UPDATE hash='hash'";
$stmt = $dbh->prepare($sql);
$data = $stmt->execute($matches);

//Error reporting if something went wrong...
var_dump($dbh->errorInfo());

?>

You will need to adapt it a little.

Table structure I used is here:

CREATE TABLE IF NOT EXISTS `hashes` (
  `hashid` int(11) NOT NULL AUTO_INCREMENT,
  `hash` varchar(250) NOT NULL,
  PRIMARY KEY (`hashid`),
  UNIQUE KEY `hash1` (`hash`)
) ENGINE=InnoDB  DEFAULT CHARSET=latin1 AUTO_INCREMENT=1 ;

Code was run on my XAMPP Server which is using PHP 5.3.8 with MySQL 5.5.16.

I hope this helps.

I just had to solve the same problem. The key to getting this to work was that the dialog must be partially initialized in the click event handler for the link you want to use the confirmation functionality with (if you want to use this for more than one link). This is because the target URL for the link must be injected into the event handler for the confirmation button click. I used a CSS class to indicate which links should have the confirmation behavior.

Here's my solution, abstracted away to be suitable for an example.

<div id="dialog" title="Confirmation Required">
  Are you sure about this?
</div>

<script type="text/javascript">
  $(document).ready(function() {
    $("#dialog").dialog({
      autoOpen: false,
      modal: true
    });
  });

  $(".confirmLink").click(function(e) {
    e.preventDefault();
    var targetUrl = $(this).attr("href");

    $("#dialog").dialog({
      buttons : {
        "Confirm" : function() {
          window.location.href = targetUrl;
        },
        "Cancel" : function() {
          $(this).dialog("close");
        }
      }
    });

    $("#dialog").dialog("open");
  });
</script>

<a class="confirmLink" href="http://someLinkWhichRequiresConfirmation.com">Click here</a>
<a class="confirmLink" href="http://anotherSensitiveLink">Or, you could click here</a>

I believe that this would work for you, if you can generate your links with the CSS class (confirmLink, in my example).

Here is a jsfiddle with the code in it.

In the interest of full disclosure, I'll note that I spent a few minutes on this particular problem and I provided a similar answer to this question, which was also without an accepted answer at the time.

Here is my PowerShell method

gci env:* | sort-object name | Where-Object {$_.Name -like "MyApp*"} | Foreach {"[System.Environment]::SetEnvironmentVariable('$($_.Name)', '$($_.Value)', 'Machine')"}

What it does

1. Scoops up all environment variables
2. Filters them
3. Emits the formatted PowerShell needed to recreate them on another machine (assumes all are set at machine level)

So after running this on the source machine, simply transfer output onto the target machine and execute (elevated prompt if setting at machine level)

I was able to find a solution/workaround of redirecting output to a file and then to the console:

dir > a.txt | type a.txt

where dir is the command which output needs to be redirected, a.txt a file where to store output.

To answer the underlying question of how to use a CASE expression in the WHERE clause:

First remember that the value of a CASE expression has to have a normal data type value, not a boolean value. It has to be a varchar, or an int, or something. It's the same reason you can't say SELECT Name, 76 = Age FROM [...] and expect to get 'Frank', FALSE in the result set.

Additionally, all expressions in a WHERE clause need to have a boolean value. They can't have a value of a varchar or an int. You can't say WHERE Name; or WHERE 'Frank';. You have to use a comparison operator to make it a boolean expression, so WHERE Name = 'Frank';

That means that the CASE expression must be on one side of a boolean expression. You have to compare the CASE expression to something. It can't stand by itself!

Here:

WHERE 
    DateDropped = 0
    AND CASE
            WHEN @JobsOnHold  = 1 AND DateAppr >= 0 THEN 'True'
            WHEN DateAppr != 0 THEN 'True'
            ELSE 'False'
        END = 'True'

Notice how in the end the CASE expression on the left will turn the boolean expression into either 'True' = 'True' or 'False' = 'True'.

Note that there's nothing special about 'False' and 'True'. You can use 0 and 1 if you'd rather, too.

You can typically rewrite the CASE expression into boolean expressions we're more familiar with, and that's generally better for performance. However, sometimes is easier or more maintainable to use an existing expression than it is to convert the logic.

In plt.colorbar(z1_plot,cax=ax1), use ax= instead of cax=, i.e. plt.colorbar(z1_plot,ax=ax1)

In my case, the bootstrap minified CSS was causing the issue. To make bootstrap 3.0.2 responsive in IE8 (emulated using the F12 Developer Tools) I had to:

1 - Set the X-UA-Compatible flag.

<meta http-equiv="X-UA-Compatible" content="IE=edge">

2 - Use the non-minified bootstrap.css, instead of bootstrap.min.css

<link href="/css/bootstrap.css" rel="stylesheet" />

3 - Add the respond.js (and html5shiv.js)

<!--[if lt IE 9]>
  <script src="/js/html5shiv.min.js"></script>
  <script src="/js/respond.min.js"></script>
<![endif]-->

There are many ways to list all containers.

You can find using 3 Aliasesls, ps, list like this.

sudo docker container ls 
sudo docker container ps
sudo docker container list
sudo docker ps
sudo docker ps -a

You can also use give option[option].

Options -:

  -a, --all             Show all containers (default shows just running)
  -f, --filter filter   Filter output based on conditions provided
      --format string   Pretty-print containers using a Go template
  -n, --last int        Show last created containers (includes all states) (default -1)
  -l, --latest          Show the latest created container (includes all states)
      --no-trunc        Don't truncate output
  -q, --quiet           Only display numeric IDs
  -s, --size            Display total file sizes

You can use an option like this:

sudo docker ps //Showing only running containers
sudo docker ps -a //All container (running + stopped)
sudo docker pa -l // latest
sudo docker ps -n <int valuse 1,2,3 etc>// latest number of created containers
sudo docker ps -s // Display container with size
sudo docker ps -q // Only display numeric IDs for containers
docker docker ps -a | tail -n 1 //oldest container

Try this:

var array = [1, 55, 77, 88, 76, 59];
var array_last_five;
array_last_five = array.slice(-5);
if (array.length < 6) {
     array_last_five.shift();
}

The functionality is already present in atom via the Symbols View package you don't need to install anything.

The command you are searching for is symbols-view:go-to-declaration (Jump to the symbol under the cursor) which is bound by default to cmd-alt-down on macOS and ctrl-alt-down on Linux.

just note that it will work only if you will have generated tags for your project, either via this package or via ctags (exuberant or not)

Not only can you return a function which you have passed into another function as a variable, you can also use it for calculation inside but defining it outside. See this example:

    function calculate(a,b,fn) {
      var c = a * 3 + b + fn(a,b);
      return  c;
    }

    function sum(a,b) {
      return a+b;
    }

    function product(a,b) {
      return a*b;
    }

    document.write(calculate (10,20,sum)); //80
    document.write(calculate (10,20,product)); //250

Here use asp:CompareValidator, and compare the value to "select" option.

Use Operator="NotEqual" ValueToCompare="0" to prevent the user from submitting the "select".

<asp:CompareValidator ControlToValidate="ddlReportType" ID="CompareValidator1"
    ValidationGroup="g1" CssClass="errormesg" ErrorMessage="Please select a type"
    runat="server" Display="Dynamic" 
    Operator="NotEqual" ValueToCompare="0" Type="Integer" />

When you do above, if you select the "select " option from dropdown it will show the ErrorMessage.

This one looks better than the others I think.

USE  [enter your db name here]
GO

SELECT      SCHEMA_NAME(A.schema_id) + '.' +
        --A.Name, SUM(B.rows) AS 'RowCount'  Use AVG instead of SUM
          A.Name, AVG(B.rows) AS 'RowCount'
FROM        sys.objects A
INNER JOIN sys.partitions B ON A.object_id = B.object_id
WHERE       A.type = 'U'
GROUP BY    A.schema_id, A.Name
GO

If you want to enable ping (from anywhere) programmatically, via the SDK, the magic formula is:

cidrIp:     "0.0.0.0/0"
ipProtocol: "icmp"
toPort:     -1
fromPort:   8

For example, in Scala (using the AWS Java SDK v2), the following works to define an IpPermission for the authorizeSecurityGroupIngress endpoint.

  val PingPermission = {
    val range = IpRange.builder().cidrIp( "0.0.0.0/0" ).build()
    IpPermission.builder().ipProtocol( "icmp" ).ipRanges( range ).toPort( -1 ).fromPort( 8 ).build()
  }

(I've tried this is only on EC2-Classic. I don't know what egress rules might be necessary under a VPC)

I like the answer of coin. It's simple to understand and works with triangles. However the indexes of his program are sometimes over the bounds. So I post here his code with two tiny corrections:

inline void push_indices(vector<GLushort>& indices, int sectors, int r, int s) {
    int curRow = r * sectors;
    int nextRow = (r+1) * sectors;
    int nextS = (s+1) % sectors;

    indices.push_back(curRow + s);
    indices.push_back(nextRow + s);
    indices.push_back(nextRow + nextS);

    indices.push_back(curRow + s);
    indices.push_back(nextRow + nextS);
    indices.push_back(curRow + nextS);
}

void createSphere(vector<vec3>& vertices, vector<GLushort>& indices, vector<vec2>& texcoords,
                  float radius, unsigned int rings, unsigned int sectors)
{
    float const R = 1./(float)(rings-1);
    float const S = 1./(float)(sectors-1);

    for(int r = 0; r < rings; ++r) {
        for(int s = 0; s < sectors; ++s) {
            float const y = sin( -M_PI_2 + M_PI * r * R );
            float const x = cos(2*M_PI * s * S) * sin( M_PI * r * R );
            float const z = sin(2*M_PI * s * S) * sin( M_PI * r * R );

            texcoords.push_back(vec2(s*S, r*R));
            vertices.push_back(vec3(x,y,z) * radius);
            if(r < rings-1)
                push_indices(indices, sectors, r, s);
        }
    }
}

i use this

<style>
html, body{height:100%;margin:0;padding:0 0} 
.container-fluid{height:100%;display:table;width:100%;padding-right:0;padding-left: 0}   
.row-fluid{height:100%;display:table-cell;vertical-align:middle;width:100%}
.centering{float:none;margin:0 auto} 
</style>
<body>
<div class="container-fluid">
     <div class="row-fluid">
     <div class="offset3 span6 centering">
            content here
         </div>
    </div>
 </div>
</body>

I had to use this kind of code for a scanner that pasted stuff into the field

$(document).ready(function() {
  var tId,oldVal;
  $("#fieldId").focus(function() {
     oldVal = $("#fieldId").val();
     tId=setInterval(function() { 
      var newVal = $("#fieldId").val(); 
      if (oldVal!=newVal) oldVal=newVal;
      someaction() },100);
  });
  $("#fieldId").blur(function(){ clearInterval(tId)});
});

Not tested...

If you want to clear all the headers as well as the data, for example if you are switching between 2 totally different databases with different fields, therefore different columns and column headers, I found the following to work. Otherwise when you switch you have the columns/ fields from both databases showing in the grid.

dataTable.Dispose();//get rid of existing datatable
dataTable = new DataTable();//create new datatable

datagrid.DataSource = dataTable;//clears out the datagrid with empty datatable
//datagrid.Refresh(); This does not seem to be neccesary

dataadapter.Fill(dataTable); //assumming you set the adapter with new data               
datagrid.DataSource = dataTable; 

This worked for me

<div style="display: flex; position: absolute; width: 100%;">
  <div style="white-space: nowrap; overflow: hidden;text-overflow: ellipsis;">
    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer nec odio. Praesent libero. Sed cursus ante dapibus diam. Sed nisi.
  </div>
</div>

Adding position:absolute to the parent container made it work.

PS: This is for anyone looking for a solution to dynamically truncating text.

EDIT: This was meant to be an answer for this question but since they are related and it could help someone on this question I shall also leave it here instead of deleting it.

I think you want a code beautifier, this one looks quick and easy: http://jsbeautifier.org/

@mplungjan, @eduard-luca

function isDate(str) {    
    var parms = str.split(/[\.\-\/]/);
    var yyyy = parseInt(parms[2],10);
    var mm   = parseInt(parms[1],10);
    var dd   = parseInt(parms[0],10);
    var date = new Date(yyyy,mm-1,dd,12,0,0,0);
    return mm === (date.getMonth()+1) && 
        dd === date.getDate() && 
        yyyy === date.getFullYear();
}

new Date() uses local time, hour 00:00:00 will show the last day when we have "Summer Time" or "DST (Daylight Saving Time)" events.

Example:

new Date(2010,9,17)
Sat Oct 16 2010 23:00:00 GMT-0300 (BRT)

Another alternative is to use getUTCDate().

Here is the Hooks solution

    import React, {useRef} from 'react';

    const MyComponent = () =>{

    const myRefname= useRef(null);

    const handleClick = () => {
        myRefname.current.focus();
     }

    return (
      <div onClick={handleClick}>
        <input ref={myRefname}/>
      </div>
     );
    }

For those who use Github, they have a branch network viewer that seems easier to read

This is a simple method to export the database to a folder named backup folder you can name it as you want and a simple method to import the database from the same folder a

    public class ExportImportDB extends Activity {
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            // TODO Auto-generated method stub
            super.onCreate(savedInstanceState);
//creating a new folder for the database to be backuped to
            File direct = new File(Environment.getExternalStorageDirectory() + "/Exam Creator");

               if(!direct.exists())
                {
                    if(direct.mkdir()) 
                      {
                       //directory is created;
                      }

                }
            exportDB();
            importDB();

        }
    //importing database
        private void importDB() {
            // TODO Auto-generated method stub

            try {
                File sd = Environment.getExternalStorageDirectory();
                File data  = Environment.getDataDirectory();

                if (sd.canWrite()) {
                    String  currentDBPath= "//data//" + "PackageName"
                            + "//databases//" + "DatabaseName";
                    String backupDBPath  = "/BackupFolder/DatabaseName";
                    File  backupDB= new File(data, currentDBPath);
                    File currentDB  = new File(sd, backupDBPath);

                    FileChannel src = new FileInputStream(currentDB).getChannel();
                    FileChannel dst = new FileOutputStream(backupDB).getChannel();
                    dst.transferFrom(src, 0, src.size());
                    src.close();
                    dst.close();
                    Toast.makeText(getBaseContext(), backupDB.toString(),
                            Toast.LENGTH_LONG).show();

                }
            } catch (Exception e) {

                Toast.makeText(getBaseContext(), e.toString(), Toast.LENGTH_LONG)
                        .show();

            }
        }
    //exporting database 
        private void exportDB() {
            // TODO Auto-generated method stub

            try {
                File sd = Environment.getExternalStorageDirectory();
                File data = Environment.getDataDirectory();

                if (sd.canWrite()) {
                    String  currentDBPath= "//data//" + "PackageName"
                            + "//databases//" + "DatabaseName";
                    String backupDBPath  = "/BackupFolder/DatabaseName";
                    File currentDB = new File(data, currentDBPath);
                    File backupDB = new File(sd, backupDBPath);

                    FileChannel src = new FileInputStream(currentDB).getChannel();
                    FileChannel dst = new FileOutputStream(backupDB).getChannel();
                    dst.transferFrom(src, 0, src.size());
                    src.close();
                    dst.close();
                    Toast.makeText(getBaseContext(), backupDB.toString(),
                            Toast.LENGTH_LONG).show();

                }
            } catch (Exception e) {

                Toast.makeText(getBaseContext(), e.toString(), Toast.LENGTH_LONG)
                        .show();

            }
        }

    }

Dont forget to add this permission to proceed it

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

Enjoy

I suppose this depends on your architecture and whatever else you may need to consider, but you could also take the object-oriented approach and use a class.

class ClassName {

    private $site_url;

    function __construct( $url ) {
        $this->site_url = $url;
    }

    public function parts( string $part ) {
        echo 'http://' . $this->site_url . 'content/' . $part . '.php';
    }

    # You could build a bunch of other things here
    # too and still have access to $this->site_url.
}

Then you can create and use the object wherever you'd like.

$obj = new ClassName($site_url);
$obj->parts('part_argument');

This could be overkill for what OP was specifically trying to achieve, but it's at least an option I wanted to put on the table for newcomers since nobody mentioned it yet.

The advantage here is scalability and containment. For example, if you find yourself needing to pass the same variables as references to multiple functions for the sake of a common task, that could be an indicator that a class is in order.

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

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

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

package filesendtest;

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

class TCPServer {

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

    public static void main(String args[]) {

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

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

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

                FileInputStream fis = null;

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

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

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

package filesendtest;

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

class TCPClient {

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

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

        Socket clientSocket = null;
        InputStream is = null;

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

        ByteArrayOutputStream baos = new ByteArrayOutputStream();

        if (is != null) {

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

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

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

Related

Byte array of unknown length in java

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

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

Yes, you can do this by creating a DoubleStream from the array, filtering out the negatives, and converting the stream back to an array. Here is an example:

double[] d = {8, 7, -6, 5, -4};
d = Arrays.stream(d).filter(x -> x > 0).toArray();
//d => [8, 7, 5]

If you want to filter a reference array that is not an Object[] you will need to use the toArray method which takes an IntFunction to get an array of the original type as the result:

String[] a = { "s", "", "1", "", "" };
a = Arrays.stream(a).filter(s -> !s.isEmpty()).toArray(String[]::new);

Elegant easy solution using jQuery.

<script>
    function call() {
        var body = $("html, body");
        body.stop().animate({scrollTop:0}, 500, 'swing', function() {
        });
    }
</script>

and in your html : <div onclick="call()"><img src="../img/[email protected]"></div>

var table =$('#example').DataTable( {
    data: yourdata ,
    columns: [
        { data: "id" },
        { data: "name" },
        { data: "parent" },
        { data: "date" },

        {data: "id" , render : function ( data, type, row, meta ) {
              return type === 'display'  ?
                '<a href="<?php echo $delete_url;?>'+ data +'" ><i class="fe fe-delete"></i></a>' :
                data;
            }},
    ],
    }
}

Here you go:

<?php

$html = '<p style="border: 1px solid red;">Test</p>';
echo preg_replace('/<p style="(.+?)">(.+?)<\/p>/i', "<p>$2</p>", $html);

?>

By the way, as pointed out by others, regex are not suggested for this.

HAVING is like WHERE with aggregate functions, or you could use a subquery.

select EmployeeId, sum(amount)
from Sales
group by Employee
having sum(amount) > 20000

Or

select EmployeeId, sum(amount)
from Sales
group by Employee
where EmployeeId in (
    select max(EmployeeId) from Employees)

If you run the following in SQL Server, you'll notice that COUNT(1) is evaluated as COUNT(*) anyway. So it appears that there is no difference, and also that COUNT(*) is the expression most native to the query optimizer:

SET SHOWPLAN_TEXT ON
GO

SELECT COUNT(1)
FROM <table>
GO

SET SHOWPLAN_TEXT OFF
GO

If you just need to resync windows time, open an elevated command prompt and type:

w32tm /resync

C:\WINDOWS\system32>w32tm /resync 
Sending resync command to local computer 
The command completed successfully.

ls = [x if (condition) else None for x in ls]

You probably want an extra wrapper. use a div for the background and position it below your content..

http://jsfiddle.net/pixelass/42F2j/

HTML

<div id="background-image"></div>
<div id="content">
    Here is the content at opacity 1
    <img src="http://lorempixel.com/100/50/fashion/1/">

</div>

CSS

#background-image {
    background-image: url(http://lorempixel.com/400/200/sports/1/);
    opacity:0.4;
    position:absolute;
    top:0;
    left:0;
    height:200px;
    width:400px;
    z-index:0;
}
#content {
    z-index:1;
    position:relative;
}

It depends on what you want.

console.log("story "+name+" story") will concatenate the strings together and print that. For me, I use this because it is easier to see what is going on.

Using console.log("story",name,"story") is similar to concatenation however, it seems to run something like this:

 var text = ["story", name, "story"];
 console.log(text.join(" "));

This is pushing all of the items in the array together, separated by a space: .join(" ")

A point to consider is also the purpose of the system and the data in the day to day.

For example, for a system with GPS monitoring of cars is not relevant query data from the positions of the car in previous months.

Therefore the data can be passed to other historical tables for possible consultation and reduce the execution times of the day to day queries.

I have used many codes from the above mentioned sections for removing index.php form the base url. But it was not working from my end. So, you can use this code which I have used and its working properly.

If you really need to remove index.php from the base URL then just put this code in your htaccess.

RewriteCond %{THE_REQUEST} ^GET.*index\.php [NC]

RewriteRule (.*?)index\.php/*(.*) /$1$2 [R=301,NE,L]

So I added curl AFTER my docker container was running.

(This was for debugging the container...I did not need a permanent addition)

I ran my image

docker run -d -p 8899:8080 my-image:latest

(the above makes my "app" available on my machine on port 8899) (not important to this question)

Then I listed and created terminal into the running container.

docker ps
docker exec -it my-container-id-here /bin/sh

If the exec command above does not work, check this SOF article:

Error: Cannot Start Container: stat /bin/sh: no such file or directory"

then I ran:

apk

just to prove it existed in the running container, then i ran:

apk add curl

and got the below:

apk add curl

fetch http://dl-cdn.alpinelinux.org/alpine/v3.8/main/x86_64/APKINDEX.tar.gz

fetch http://dl-cdn.alpinelinux.org/alpine/v3.8/community/x86_64/APKINDEX.tar.gz

(1/5) Installing ca-certificates (20171114-r3)

(2/5) Installing nghttp2-libs (1.32.0-r0)

(3/5) Installing libssh2 (1.8.0-r3)

(4/5) Installing libcurl (7.61.1-r1)

(5/5) Installing curl (7.61.1-r1)

Executing busybox-1.28.4-r2.trigger

Executing ca-certificates-20171114-r3.trigger

OK: 18 MiB in 35 packages

then i ran curl:

/ # curl
curl: try 'curl --help' or 'curl --manual' for more information
/ # 

Note, to get "out" of the drilled-in-terminal-window, I had to open a new terminal window and stop the running container:

docker ps
docker stop my-container-id-here

APPEND:

If you don't have "apk" (which depends on which base image you are using), then try to use "another" installer. From other answers here, you can try:

apt-get -qq update

apt-get -qq -y install curl

Tip #1

Never use Write-Host.

Tip #12

The correct way to output information from a PowerShell cmdlet or function is to create an object that contains your data, and then to write that object to the pipeline by using Write-Output.

-Don Jones: PowerShell Master

Ideally your script would create your objects ($obj = New-Object -TypeName psobject -Property @{'SomeProperty'='Test'}) then just do a Write-Output $objects. You would pipe the output to Format-Table.

PS C:\> Run-MyScript.ps1 | Format-Table

They should really call PowerShell PowerObjectandPipingShell.

Just came across the following solution:

http://www.mydailyhacks.org/2014/11/05/php-multifile-uploader-for-php-5-4-5-5/

it is a ready PHP Multi File Upload Script with an form where you can add multiple inputs and an AJAX progress bar. It should work directly after unpacking on the server...

C# equivalent of your code is

  class Imagedata : PDFStreamEngine
  {
     // C# uses "base" keyword whenever Java uses "super" 
     // so instead of super(...) in Java we should call its C# equivalent (base):
     public Imagedata()
       : base(ResourceLoader.loadProperties("org/apache/pdfbox/resources/PDFTextStripper.properties", true)) 
     { }

     // Java methods are virtual by default, when C# methods aren't.
     // So we should be sure that processOperator method in base class 
     // (that is PDFStreamEngine)
     // declared as "virtual"
     protected override void processOperator(PDFOperator operations, List arguments)
     {
        base.processOperator(operations, arguments);
     }
  }

Dont set MDI Child property from MDIForm

In Chileform Load event give the below code

    Dim l As Single = (MDIForm1.ClientSize.Width - Me.Width) / 2
    Dim t As Single = ((MDIForm1.ClientSize.Height - Me.Height) / 2) - 30
    Me.SetBounds(l, t, Me.Width, Me.Height)
    Me.MdiParent = MDIForm1

end

try this code

Set a property for the current lesson: currentLesson. It will hold, obviously, the 'number' of the choosen lesson. On each button click, set the currentLesson value to 'number'/ order of the button, i.e. for the first button, it will be '1', for the second '2' and so on. Each button now can be disabled with [disabled] attribute, if it the currentLesson is not the same as it's order.

HTML

  <button  (click)="currentLesson = '1'"
         [disabled]="currentLesson !== '1'" class="primair">
           Start lesson</button>
  <button (click)="currentLesson = '2'"
         [disabled]="currentLesson !== '2'" class="primair">
           Start lesson</button>
 .....//so on

Typescript

currentLesson:string;

  classes = [
{
  name: 'string',
  level: 'string',
  code: 'number',
  currentLesson: '1'
}]

constructor(){
  this.currentLesson=this.classes[0].currentLesson
}

DEMO

Putting everything in a loop:

HTML

<div *ngFor="let class of classes; let i = index">
   <button [disabled]="currentLesson !== i + 1" class="primair">
           Start lesson {{i +  1}}</button>
</div>

Typescript

currentLesson:string;

classes = [
{
  name: 'Lesson1',
  level: 1,
  code: 1,
},{
  name: 'Lesson2',
  level: 1,
  code: 2,
},
{
  name: 'Lesson3',
  level: 2,
  code: 3,
}]

DEMO

In XSLT 1.0 the upper-case() and lower-case() functions are not available. If you're using a 1.0 stylesheet the common method of case conversion is translate():

<xsl:variable name="lowercase" select="'abcdefghijklmnopqrstuvwxyz'" />
<xsl:variable name="uppercase" select="'ABCDEFGHIJKLMNOPQRSTUVWXYZ'" />


<xsl:template match="/">
  <xsl:value-of select="translate(doc, $lowercase, $uppercase)" />
</xsl:template>

Using the -S switch to GCC on x86 based systems produces a dump of AT&T syntax, by default, which can be specified with the -masm=att switch, like so:

gcc -S -masm=att code.c

Whereas if you'd like to produce a dump in Intel syntax, you could use the -masm=intel switch, like so:

gcc -S -masm=intel code.c

(Both produce dumps of code.c into their various syntax, into the file code.s respectively)

In order to produce similar effects with objdump, you'd want to use the --disassembler-options= intel/att switch, an example (with code dumps to illustrate the differences in syntax):

 $ objdump -d --disassembler-options=att code.c

 080483c4 <main>:
 80483c4:   8d 4c 24 04             lea    0x4(%esp),%ecx
 80483c8:   83 e4 f0                and    $0xfffffff0,%esp
 80483cb:   ff 71 fc                pushl  -0x4(%ecx)
 80483ce:   55                      push   %ebp
 80483cf:   89 e5                   mov    %esp,%ebp
 80483d1:   51                      push   %ecx
 80483d2:   83 ec 04                sub    $0x4,%esp
 80483d5:   c7 04 24 b0 84 04 08    movl   $0x80484b0,(%esp)
 80483dc:   e8 13 ff ff ff          call   80482f4 <puts@plt>
 80483e1:   b8 00 00 00 00          mov    $0x0,%eax
 80483e6:   83 c4 04                add    $0x4,%esp 
 80483e9:   59                      pop    %ecx
 80483ea:   5d                      pop    %ebp
 80483eb:   8d 61 fc                lea    -0x4(%ecx),%esp
 80483ee:   c3                      ret
 80483ef:   90                      nop

and

$ objdump -d --disassembler-options=intel code.c

 080483c4 <main>:
 80483c4:   8d 4c 24 04             lea    ecx,[esp+0x4]
 80483c8:   83 e4 f0                and    esp,0xfffffff0
 80483cb:   ff 71 fc                push   DWORD PTR [ecx-0x4]
 80483ce:   55                      push   ebp
 80483cf:   89 e5                   mov    ebp,esp
 80483d1:   51                      push   ecx
 80483d2:   83 ec 04                sub    esp,0x4
 80483d5:   c7 04 24 b0 84 04 08    mov    DWORD PTR [esp],0x80484b0
 80483dc:   e8 13 ff ff ff          call   80482f4 <puts@plt>
 80483e1:   b8 00 00 00 00          mov    eax,0x0
 80483e6:   83 c4 04                add    esp,0x4
 80483e9:   59                      pop    ecx
 80483ea:   5d                      pop    ebp
 80483eb:   8d 61 fc                lea    esp,[ecx-0x4]
 80483ee:   c3                      ret    
 80483ef:   90                      nop

USE:

 >>> a[[0,1,3]][:,[0,2]]
array([[ 0,  2],
   [ 4,  6],
   [12, 14]])

OR:

>>> a[[0,1,3],::2]
array([[ 0,  2],
   [ 4,  6],
   [12, 14]])

By default, the classes in the csv module use Windows-style line terminators (\r\n) rather than Unix-style (\n). Could this be what’s causing the apparent double line breaks?

If so, you can override it in the DictWriter constructor:

output = csv.DictWriter(open('file3.csv','w'), delimiter=',', lineterminator='\n', fieldnames=headers)

 domain = self.env['ir.config_parameter'].get_param('web.base.url')

I got the hostname and port number using this.

It declares a type based on what is assigned to it in the initialisation.

A simple example is that the code:

var i = 53;

Will examine the type of 53, and essentially rewrite this as:

int i = 53;

Note that while we can have:

long i = 53;

This won't happen with var. Though it can with:

var i = 53l; // i is now a long

Similarly:

var i = null; // not allowed as type can't be inferred.
var j = (string) null; // allowed as the expression (string) null has both type and value.

This can be a minor convenience with complicated types. It is more important with anonymous types:

var i = from x in SomeSource where x.Name.Length > 3 select new {x.ID, x.Name};
foreach(var j in i)
  Console.WriteLine(j.ID.ToString() + ":" + j.Name);

Here there is no other way of defining i and j than using var as there is no name for the types that they hold.

You can do it like this:

using System.IO;

static void Main(string[] args)
{
    using(var reader = new StreamReader(@"C:\test.csv"))
    {
        List<string> listA = new List<string>();
        List<string> listB = new List<string>();
        while (!reader.EndOfStream)
        {
            var line = reader.ReadLine();
            var values = line.Split(';');

            listA.Add(values[0]);
            listB.Add(values[1]);
        }
    }
}

//in html

<nav class="navbar navbar-default" id="mainnav">
<nav>

// add in jquery

$(document).ready(function() {
  var navpos = $('#mainnav').offset();
  console.log(navpos.top);
    $(window).bind('scroll', function() {
      if ($(window).scrollTop() > navpos.top) {
       $('#mainnav').addClass('navbar-fixed-top');
       }
       else {
         $('#mainnav').removeClass('navbar-fixed-top');
       }
    });
});

Here is the jsfiddle to play around : -http://jsfiddle.net/shubhampatwa/46ovg69z/

EDIT: if you want to apply this code only for mobile devices the you can use:

   var newWindowWidth = $(window).width();
    if (newWindowWidth < 481) {
        //Place code inside it...
       }

typeof is an operator to obtain a type known at compile-time (or at least a generic type parameter). The operand of typeof is always the name of a type or type parameter - never an expression with a value (e.g. a variable). See the C# language specification for more details.

GetType() is a method you call on individual objects, to get the execution-time type of the object.

Note that unless you only want exactly instances of TextBox (rather than instances of subclasses) you'd usually use:

if (myControl is TextBox)
{
    // Whatever
}

Or

TextBox tb = myControl as TextBox;
if (tb != null)
{
    // Use tb
}

You should try JRebel, which does the hot deploy stuff pretty well. A bit expensive, but worth the money. They have a trial version.

The standard Python libraries don't include any tzinfo classes (but see pep 431). I can only guess at the reasons. Personally I think it was a mistake not to include a tzinfo class for UTC, because that one is uncontroversial enough to have a standard implementation.

Edit: Although there's no implementation in the library, there is one given as an example in the tzinfo documentation.

from datetime import timedelta, tzinfo

ZERO = timedelta(0)

# A UTC class.

class UTC(tzinfo):
    """UTC"""

    def utcoffset(self, dt):
        return ZERO

    def tzname(self, dt):
        return "UTC"

    def dst(self, dt):
        return ZERO

utc = UTC()

To use it, to get the current time as an aware datetime object:

from datetime import datetime 

now = datetime.now(utc)

There is datetime.timezone.utc in Python 3.2+:

from datetime import datetime, timezone 

now = datetime.now(timezone.utc)

The request method getRequestDispatcher() can be used for referring to local servlets within single webapp.

Servlet context based getRequestDispatcher() method can used of referring servlets from other web applications deployed on SAME server.

Yes, you can!

$str = 'One';
$class = 'Class'.$str;
$object = new $class();

When using namespaces, supply the fully qualified name:

$class = '\Foo\Bar\MyClass'; 
$instance = new $class();

Other cool stuff you can do in php are:
Variable variables:

$personCount = 123;
$varname = 'personCount';
echo $$varname; // echo's 123

And variable functions & methods.

$func = 'my_function';
$func('param1'); // calls my_function('param1');

$method = 'doStuff';
$object = new MyClass();
$object->$method(); // calls the MyClass->doStuff() method. 

I worked on this for too long. The answer that helped me was at: send Content-Type: application/json post with node.js

Which uses the following format:

request({
    url: url,
    method: "POST",
    headers: {
        "content-type": "application/json",
        },
    json: requestData
//  body: JSON.stringify(requestData)
    }, function (error, resp, body) { ...

While I am no Objective-C expert, I personally just define the method in the implementation of my class. Granted, it must be defined before (above) any methods calling it, but it definitely takes the least amount of work to do.

Here are the details of what works for an EC2 instance:

scp -i /path/to/whatever.pem /users/me/path-to-file [email protected]:~

Few notes for beginning:

1. Note the spaces between the three parameters given after the -i
2. scp stands for secure copy protocol. Knowing the words makes it easier to remember the command.
3. -i dictates that you need to give the .pem file as the next param. If there is no -i, than you do not need a .pem.
4. Note the :~ at the end of the destination for the EC2 instance.

This will throw a NullPointerException - as will any attempt to invoke an instance method on a null reference - but in cases like this you should make an explicit check against null:

if ((test != null) && !test.isEmpty())

This is much better, and clearer, than propagating an Exception.

When you are passing the custom request in the controller method, and your request file doesn't follow the proper syntax or table name is changed, then laravel through this type of exception. I'll show you in Example.

My Request code.
     public function rules()
        {
            return [
                'name' => 'required|unique:posts|max:50',
                'description' => 'required',
            ];
        }

But my table name is todos not posts so that's why it through "Base table or view not found: 1146 Table Laravel 7


    I forgot to change the table name in first index.
     public function rules()
        {
            return [
                'name' => 'required|unique:todos|max:50',
                'description' => 'required',
            ];
        }

Have you tried using an absolute path:

File file = new File(System.getProperty("user.dir") + "/file.txt");

I had the same problem after installing TensorFlow package, which downgraded my pandas version from 2.23 to 2.22. I tried all the solutions proposed above + the one suggested by post author, linked here. What eventually worked for me was to reinstall Anaconda distribution.

Imp. TIP :

Whenever you have heavyweight initialization that should be done once for many RDD elements rather than once per RDD element, and if this initialization, such as creation of objects from a third-party library, cannot be serialized (so that Spark can transmit it across the cluster to the worker nodes), use mapPartitions() instead of map(). mapPartitions() provides for the initialization to be done once per worker task/thread/partition instead of once per RDD data element for example : see below.

val newRd = myRdd.mapPartitions(partition => {
  val connection = new DbConnection /*creates a db connection per partition*/

  val newPartition = partition.map(record => {
    readMatchingFromDB(record, connection)
  }).toList // consumes the iterator, thus calls readMatchingFromDB 

  connection.close() // close dbconnection here
  newPartition.iterator // create a new iterator
})

Q2. does flatMap behave like map or like mapPartitions?

Yes. please see example 2 of flatmap.. its self explanatory.

Q1. What's the difference between an RDD's map and mapPartitions

map works the function being utilized at a per element level while mapPartitions exercises the function at the partition level.

Example Scenario : if we have 100K elements in a particular RDD partition then we will fire off the function being used by the mapping transformation 100K times when we use map.

Conversely, if we use mapPartitions then we will only call the particular function one time, but we will pass in all 100K records and get back all responses in one function call.

There will be performance gain since map works on a particular function so many times, especially if the function is doing something expensive each time that it wouldn't need to do if we passed in all the elements at once(in case of mappartitions).

map

Applies a transformation function on each item of the RDD and returns the result as a new RDD.

Listing Variants

def map[U: ClassTag](f: T => U): RDD[U]

Example :

val a = sc.parallelize(List("dog", "salmon", "salmon", "rat", "elephant"), 3)
 val b = a.map(_.length)
 val c = a.zip(b)
 c.collect
 res0: Array[(String, Int)] = Array((dog,3), (salmon,6), (salmon,6), (rat,3), (elephant,8)) 

mapPartitions

This is a specialized map that is called only once for each partition. The entire content of the respective partitions is available as a sequential stream of values via the input argument (Iterarator[T]). The custom function must return yet another Iterator[U]. The combined result iterators are automatically converted into a new RDD. Please note, that the tuples (3,4) and (6,7) are missing from the following result due to the partitioning we chose.

preservesPartitioning indicates whether the input function preserves the partitioner, which should be false unless this is a pair RDD and the input function doesn't modify the keys.

Listing Variants

def mapPartitions[U: ClassTag](f: Iterator[T] => Iterator[U], preservesPartitioning: Boolean = false): RDD[U]

Example 1

val a = sc.parallelize(1 to 9, 3)
 def myfunc[T](iter: Iterator[T]) : Iterator[(T, T)] = {
   var res = List[(T, T)]()
   var pre = iter.next
   while (iter.hasNext)
   {
     val cur = iter.next;
     res .::= (pre, cur)
     pre = cur;
   }
   res.iterator
 }
 a.mapPartitions(myfunc).collect
 res0: Array[(Int, Int)] = Array((2,3), (1,2), (5,6), (4,5), (8,9), (7,8)) 

Example 2

val x = sc.parallelize(List(1, 2, 3, 4, 5, 6, 7, 8, 9,10), 3)
 def myfunc(iter: Iterator[Int]) : Iterator[Int] = {
   var res = List[Int]()
   while (iter.hasNext) {
     val cur = iter.next;
     res = res ::: List.fill(scala.util.Random.nextInt(10))(cur)
   }
   res.iterator
 }
 x.mapPartitions(myfunc).collect
 // some of the number are not outputted at all. This is because the random number generated for it is zero.
 res8: Array[Int] = Array(1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 5, 7, 7, 7, 9, 9, 10) 

The above program can also be written using flatMap as follows.

Example 2 using flatmap

val x  = sc.parallelize(1 to 10, 3)
 x.flatMap(List.fill(scala.util.Random.nextInt(10))(_)).collect

 res1: Array[Int] = Array(1, 2, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 10, 10) 

Conclusion :

mapPartitions transformation is faster than map since it calls your function once/partition, not once/element..

Further reading : foreach Vs foreachPartitions When to use What?

Html file (/index.html)

<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Untitled Document</title>
     <link rel="stylesheet" media="screen" href="assets/css/style.css" />
</head>
<body>
     <h1>Background Image</h1>
</body>
</html>

Css file (/assets/css/style.css)

body{
    background:url(../img/bg.jpg);  
}

Using yckart's answer, I made it to search for the whole table - all td's.

$("#search").keyup(function() {
    var value = this.value;

    $("table").find("tr").each(function(index) {
        if (index === 0) return;

        var if_td_has = false; //boolean value to track if td had the entered key
        $(this).find('td').each(function () {
            if_td_has = if_td_has || $(this).text().indexOf(value) !== -1; //Check if td's text matches key and then use OR to check it for all td's
        });

        $(this).toggle(if_td_has);

    });
});

There's a class called SoapHexBinary that does exactly what you want.

using System.Runtime.Remoting.Metadata.W3cXsd2001;

public static byte[] GetStringToBytes(string value)
{
    SoapHexBinary shb = SoapHexBinary.Parse(value);
    return shb.Value;
}

public static string GetBytesToString(byte[] value)
{
    SoapHexBinary shb = new SoapHexBinary(value);
    return shb.ToString();
}

There are many ways to filter for element ancestors.

if ($elem.closest('.parentClass').length /* > 0*/) {/*...*/}
if ($elem.parents('.parentClass').length /* > 0*/) {/*...*/}
if ($elem.parents().hasClass('parentClass')) {/*...*/}
if ($('.parentClass').has($elem).length /* > 0*/) {/*...*/}
if ($elem.is('.parentClass *')) {/*...*/} 

Beware, closest() method includes element itself while checking for selector.

Alternatively, if you have a unique selector matching the $elem, e.g #myElem, you can use:

if ($('.parentClass:has(#myElem)').length /* > 0*/) {/*...*/}
if(document.querySelector('.parentClass #myElem')) {/*...*/}

If you want to match an element depending any of its ancestor class for styling purpose only, just use a CSS rule:

.parentClass #myElem { /* CSS property set */ }

In jQuery, that's

$(document).ready(function () {
  $('input').focus(function () {
    $(this).attr('value',$(this).attr('value'));
  }
}

First you have to create a li(with id and value as you required) then add it to your ul.

Javascript ::

addAnother = function() {
    var ul = document.getElementById("list");
    var li = document.createElement("li");
    var children = ul.children.length + 1
    li.setAttribute("id", "element"+children)
    li.appendChild(document.createTextNode("Element "+children));
    ul.appendChild(li)
}

Check this example that add li element to ul.

b = dict(zip(a[::2], a[1::2]))

If a is large, you will probably want to do something like the following, which doesn't make any temporary lists like the above.

from itertools import izip
i = iter(a)
b = dict(izip(i, i))

In Python 3 you could also use a dict comprehension, but ironically I think the simplest way to do it will be with range() and len(), which would normally be a code smell.

b = {a[i]: a[i+1] for i in range(0, len(a), 2)}

So the iter()/izip() method is still probably the most Pythonic in Python 3, although as EOL notes in a comment, zip() is already lazy in Python 3 so you don't need izip().

i = iter(a)
b = dict(zip(i, i))

If you want it on one line, you'll have to cheat and use a semicolon. ;-)

Aside from @JsonIgnore, there are a couple of other possibilities:

• Use JSON Views to filter out fields conditionally (by default, not used for deserialization; in 2.0 will be available but you can use different view on serialization, deserialization)
• @JsonIgnoreProperties on class may be useful

Since I can't comment on the top comment, I'm forced to submit an "answer."

The problem with the selected answer is that setting the field to readonly takes the field out of the tab order on the iPhone. So if you like entering forms by hitting "next", you'll skip right over the field.

You're almost there: it's NOW() - INTERVAL 1 DAY

SET @date:='2012-07-11';
SELECT date_add(date_add(LAST_DAY(@date),interval 1 DAY), 
       interval -1 MONTH) AS first_day

1. 'lib/'s parent directory must be in sys.path.

2. Your 'lib/__init__.py' might look like this:

   from . import settings # or just 'import settings' on old Python versions
   class Helper(object):
         pass
   

Then the following example should work:

from lib.settings import Values
from lib import Helper

Answer to the edited version of the question:

__init__.py defines how your package looks from outside. If you need to use Helper in settings.py then define Helper in a different file e.g., 'lib/helper.py'.

.
|   `-- import_submodule.py
    `-- lib
    |-- __init__.py
    |-- foo
    |   |-- __init__.py
    |   `-- someobject.py
    |-- helper.py
    `-- settings.py

2 directories, 6 files

The command:

$ python import_submodule.py

Output:

settings
helper
Helper in lib.settings
someobject
Helper in lib.foo.someobject

# ./import_submodule.py
import fnmatch, os
from lib.settings import Values
from lib import Helper

print
for root, dirs, files in os.walk('.'):
    for f in fnmatch.filter(files, '*.py'):
        print "# %s/%s" % (os.path.basename(root), f)
        print open(os.path.join(root, f)).read()
        print


# lib/helper.py
print 'helper'
class Helper(object):
    def __init__(self, module_name):
        print "Helper in", module_name


# lib/settings.py
print "settings"
import helper

class Values(object):
    pass

helper.Helper(__name__)


# lib/__init__.py
#from __future__ import absolute_import
import settings, foo.someobject, helper

Helper = helper.Helper


# foo/someobject.py
print "someobject"
from .. import helper

helper.Helper(__name__)


# foo/__init__.py
import someobject

The upcoming version v3.3.0 of ggplot2 will have an option n.breaks to automatically generate breaks for scale_x_continuous and scale_y_continuous

    devtools::install_github("tidyverse/ggplot2")

    library(ggplot2)

    plt <- ggplot(mtcars, aes(x = mpg, y = disp)) +
      geom_point()

    plt + 
      scale_x_continuous(n.breaks = 5)

    plt + 
      scale_x_continuous(n.breaks = 10) +
      scale_y_continuous(n.breaks = 10)

Execute in command mode d$ .

the ideal way is to

{{ something|safe }}

than completely turning off auto escaping.

I prefer using PHPMailer script to send emails from localhost as it lets me use my Gmail account as SMTP. You can find the PHPMailer from http://phpmailer.worxware.com/ . Help regarding how to use gmail as SMTP or any other SMTP can be found at http://www.mittalpatel.co.in/php_send_mail_from_localhost_using_gmail_smtp . Hope this helps!

If your object could contain any key/value pairs, you could declare an interface called keyable like :

interface keyable {
    [key: string]: any  
}

then use it as follows :

let countryProviders: keyable[];

or

let countryProviders: Array<keyable>;

You can alias the column names one by one, like so

SELECT col1 as `MyNameForCol1`, col2 as `MyNameForCol2` 
FROM `foobar`

Edit You can access INFORMATION_SCHEMA.COLUMNS directly to mangle a new alias like so. However, how you fit this into a query is beyond my MySql skills :(

select CONCAT('Foobar_', COLUMN_NAME)
from INFORMATION_SCHEMA.COLUMNS 
where TABLE_NAME = 'Foobar'

Here is my solution:

dependencies: Gmaps.js, jQuery

var Maps = function($) {
   var lost_addresses = [],
       geocode_count  = 0;

   var addMarker = function() { console.log('Marker Added!') };

   return {
     getGecodeFor: function(addresses) {
        var latlng;
        lost_addresses = [];
        for(i=0;i<addresses.length;i++) {
          GMaps.geocode({
            address: addresses[i],
            callback: function(response, status) {
              if(status == google.maps.GeocoderStatus.OK) {
                addMarker();
              } else if(status == google.maps.GeocoderStatus.OVER_QUERY_LIMIT) {
                lost_addresses.push(addresses[i]);
              }

               geocode_count++;
               // notify listeners when the geocode is done
               if(geocode_count == addresses.length) {
                 $.event.trigger({ type: 'done:geocoder' });
               }
            }
          });
        }
     },
     processLostAddresses: function() {
       if(lost_addresses.length > 0) {
         this.getGeocodeFor(lost_addresses);
       }
     }
   };
}(jQuery);

Maps.getGeocodeFor(address);

// listen to done:geocode event and process the lost addresses after 1.5s
$(document).on('done:geocode', function() {
  setTimeout(function() {
    Maps.processLostAddresses();
  }, 1500);
});

You are getting this error because the value cannot be found in the range. String or integer doesn't matter. Best thing to do in my experience is to do a check first to see if the value exists.

I used CountIf below, but there is lots of different ways to check existence of a value in a range.

Public Sub test()

Dim rng As Range
Dim aNumber As Long

aNumber = 666

Set rng = Sheet5.Range("B16:B615")

    If Application.WorksheetFunction.CountIf(rng, aNumber) > 0 Then

        rowNum = Application.WorksheetFunction.Match(aNumber, rng, 0)

    Else
        MsgBox aNumber & " does not exist in range " & rng.Address
    End If

End Sub

ALTERNATIVE WAY

Public Sub test()
    Dim rng As Range
    Dim aNumber As Variant
    Dim rowNum As Long

    aNumber = "2gg"

    Set rng = Sheet5.Range("B1:B20")

    If Not IsError(Application.Match(aNumber, rng, 0)) Then
        rowNum = Application.Match(aNumber, rng, 0)
        MsgBox rowNum
    Else
        MsgBox "error"
    End If
End Sub

OR

Public Sub test()
    Dim rng As Range
    Dim aNumber As Variant
    Dim rowNum As Variant

    aNumber = "2gg"

    Set rng = Sheet5.Range("B1:B20")

    rowNum = Application.Match(aNumber, rng, 0)

    If Not IsError(rowNum) Then
        MsgBox rowNum
    Else
        MsgBox "error"
    End If
End Sub

Like that:

class Zoo {
    AnimalClass: typeof Animal;

    constructor(AnimalClass: typeof Animal ) {
        this.AnimalClass = AnimalClass
        let Hector = new AnimalClass();
    }
}

Or just:

class Zoo {
    constructor(public AnimalClass: typeof Animal ) {
        let Hector = new AnimalClass();
    }
}

typeof Class is the type of the class constructor. It's preferable to the custom constructor type declaration because it processes static class members properly.

Here's the relevant part of TypeScript docs. Search for the typeof. As a part of a TypeScript type annotation, it means "give me the type of the symbol called Animal" which is the type of the class constructor function in our case.

The best solution in my opinion is to use the unittest command line interface which will add the directory to the sys.path so you don't have to (done in the TestLoader class).

For example for a directory structure like this:

new_project
+-- antigravity.py
+-- test_antigravity.py

You can just run:

$ cd new_project
$ python -m unittest test_antigravity

For a directory structure like yours:

new_project
+-- antigravity
¦   +-- __init__.py         # make it a package
¦   +-- antigravity.py
+-- test
    +-- __init__.py         # also make test a package
    +-- test_antigravity.py

And in the test modules inside the test package, you can import the antigravity package and its modules as usual:

# import the package
import antigravity

# import the antigravity module
from antigravity import antigravity

# or an object inside the antigravity module
from antigravity.antigravity import my_object

Running a single test module:

To run a single test module, in this case test_antigravity.py:

$ cd new_project
$ python -m unittest test.test_antigravity

Just reference the test module the same way you import it.

Running a single test case or test method:

Also you can run a single TestCase or a single test method:

$ python -m unittest test.test_antigravity.GravityTestCase
$ python -m unittest test.test_antigravity.GravityTestCase.test_method

Running all tests:

You can also use test discovery which will discover and run all the tests for you, they must be modules or packages named test*.py (can be changed with the -p, --pattern flag):

$ cd new_project
$ python -m unittest discover
$ # Also works without discover for Python 3
$ # as suggested by @Burrito in the comments
$ python -m unittest

This will run all the test*.py modules inside the test package.

After placing the jar file in desired location, you need to add the jar file by right click on

Project --> properties --> Java Build Path --> Libraries --> Add Jar.

The "IIS APPPOOL\AppPoolName" will work, but as mentioned previously, it does not appear to be a valid AD name so when you search for it in the "Select User or Group" dialog box, it won't show up (actually, it will find it, but it will think its an actual system account, and it will try to treat it as such...which won't work, and will give you the error message about it not being found).

How I've gotten it to work is:

1. In SQL Server Management Studio, look for the Security folder (the security folder at the same level as the Databases, Server Objects, etc. folders...not the security folder within each individual database)
2. Right click logins and select "New Login"
3. In the Login name field, type IIS APPPOOL\YourAppPoolName - do not click search
4. Fill whatever other values you like (i.e., authentication type, default database, etc.)
5. Click OK

As long as the AppPool name actually exists, the login should now be created.

There you go: (a-zA-Z)

function codeToChar( number ) {
  if ( number >= 0 && number <= 25 ) // a-z
    number = number + 97;
  else if ( number >= 26 && number <= 51 ) // A-Z
    number = number + (65-26);
  else
    return false; // range error
  return String.fromCharCode( number );
}

input: 0-51, or it will return false (range error);

OR:

var codeToChar = function() {
  var abc = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ".split("");
  return function( code ) {
    return abc[code];
  };
})();

returns undefined in case of range error. NOTE: the array will be created only once and because of closure it will be available for the the new codeToChar function. I guess it's even faster then the first method (it's just a lookup basically).

Go to: chrome://flags/

Enable: Allow invalid certificates for resources loaded from localhost.

You don't have the green security, but you are always allowed for https://localhost in chrome.

A possible solution is to convert the entire database to UTF8 (see also this question).

I use $.data - http://api.jquery.com/jquery.data/

//Set value 7 to data-id 
$.data(this, 'id', 7);

//Get value from data-id
alert( $(this).data("id") ); // => outputs 7

I strongly recommend you learn how to use layout managers to get the layout you want to see. null layouts are fragile, and cause no end of trouble.

Try this source & check the comments.

import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTabbedPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;

public class VolumeCalculator extends JFrame implements ActionListener {
    private JTabbedPane jtabbedPane;
    private JPanel options;
    JTextField poolLengthText, poolWidthText, poolDepthText, poolVolumeText, hotTub,
            hotTubLengthText, hotTubWidthText, hotTubDepthText, hotTubVolumeText, temp, results,
            myTitle;
    JTextArea labelTubStatus;

    public VolumeCalculator(){
        setSize(400, 250);
        setVisible(true);
        setSize(400, 250);
        setVisible(true);
        setTitle("Volume Calculator");
        setSize(300, 200);
        JPanel topPanel = new JPanel();
        topPanel.setLayout(new BorderLayout());
        getContentPane().add(topPanel);

        createOptions();

        jtabbedPane = new JTabbedPane();

        jtabbedPane.addTab("Options", options);

        topPanel.add(jtabbedPane, BorderLayout.CENTER);
    }
    /* CREATE OPTIONS */

    public void createOptions(){
        options = new JPanel();
        //options.setLayout(null);
        JLabel labelOptions = new JLabel("Change Company Name:");
        labelOptions.setBounds(120, 10, 150, 20);
        options.add(labelOptions);
        JTextField newTitle = new JTextField("Some Title");
        //newTitle.setBounds(80, 40, 225, 20);    
        options.add(newTitle);
        myTitle = new JTextField(20);
        // myTitle WAS NEVER ADDED to the GUI!
        options.add(myTitle);
        //myTitle.setBounds(80, 40, 225, 20);
        //myTitle.add(labelOptions);
        JButton newName = new JButton("Set New Name");
        //newName.setBounds(60, 80, 150, 20);
        newName.addActionListener(this);
        options.add(newName);
        JButton Exit = new JButton("Exit");
        //Exit.setBounds(250, 80, 80, 20);
        Exit.addActionListener(this);
        options.add(Exit);
    }

    public void actionPerformed(ActionEvent event){
        JButton button = (JButton) event.getSource();
        String buttonLabel = button.getText();
        if ("Exit".equalsIgnoreCase(buttonLabel)){
            Exit_pressed();
            return;
        }
        if ("Set New Name".equalsIgnoreCase(buttonLabel)){
            New_Name();
            return;
        }
    }

    private void Exit_pressed(){
        System.exit(0);
    }

    private void New_Name(){
        System.out.println("'" + myTitle.getText() + "'");
        this.setTitle(myTitle.getText());
    }

    private void Options(){
    }

    public static void main(String[] args){
        JFrame frame = new VolumeCalculator();
        frame.pack();
        frame.setSize(380, 350);
        frame.setVisible(true);
    }
}

Here is a simple one.

names = ["Sam", "Peter", "James", "Julian", "Ann"]
print(*names, sep=", ")

the star unpacks the list and return every element in the list.

<a href="YOUR_URL" target="_YOUR_IFRAME_NAME">LINK NAME</a>

You can do this by selecting every element of the class that is the sibling of the same class and inverting it, which will select pretty much every element on the page, so then you have to select by the class again.

eg:

<style>
    :not(.bar ~ .bar).bar {
        color: red;
    }
<div>
    <div class="foo"></div>
    <div class="bar"></div> <!-- Only this will be selected -->
    <div class="foo"></div>
    <div class="bar"></div>
    <div class="foo"></div>
    <div class="bar"></div>
</div>

The jackson API has changed:

new ObjectMapper()
.writer()
.withDefaultPrettyPrinter()
.writeValueAsString(new HashMap<String, Object>());

ffmpeg provides this functionality. All you need to do is run someting like

ffmpeg -i <inputfilename> -s 640x480 -b 512k -vcodec mpeg1video -acodec copy <outputfilename>

For newer versions of ffmpeg you need to change -b to -b:v:

ffmpeg -i <inputfilename> -s 640x480 -b:v 512k -vcodec mpeg1video -acodec copy <outputfilename>

to convert the input video file to a video with a size of 640 x 480 and a bitrate of 512 kilobits/sec using the MPEG 1 video codec and just copying the original audio stream. Of course, you can plug in any values you need and play around with the size and bitrate to achieve the quality/size tradeoff you are looking for. There are also a ton of other options described in the documentation

Run ffmpeg -formats or ffmpeg -codecs for a list of all of the available formats and codecs. If you don't have to target a specific codec for the final output, you can achieve better compression ratios with minimal quality loss using a state of the art codec like H.264.

This is a likely a linker error. Add the -lm switch to specify that you want to link against the standard C math library (libm) which has the definition for those functions (the header just has the declaration for them - worth looking up the difference.)

Never, you can't do it since package name is the unique name Identifier for your app.....

We have a simple argument in Pandas read_csv for this:

Use:

df = pd.read_csv('test.csv', na_filter= False)

Pandas documentation clearly explains how the above argument works.

Link

You can divide seconds by 60 to get the minutes

import time
seconds = time.time()
minutes = seconds / 60
print(minutes)

When you divide it by 60 again, you will get the hours

public object BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext)
{
    var str = controllerContext.HttpContext.Request.QueryString[bindingContext.ModelName];
    if (string.IsNullOrEmpty(str)) return null;
    var date = DateTime.ParseExact(str, "dd.MM.yyyy", null);
    return date;
}

Sure, use the .format method. E.g.,

print('{:10s} {:3d}  {:7.2f}'.format('xxx', 123, 98))
print('{:10s} {:3d}  {:7.2f}'.format('yyyy', 3, 1.0))
print('{:10s} {:3d}  {:7.2f}'.format('zz', 42, 123.34))

will print

xxx        123    98.00
yyyy         3     1.00
zz          42   123.34

You can adjust the field sizes as desired. Note that .format works independently of print to format a string. I just used print to display the strings. Brief explanation:

10s format a string with 10 spaces, left justified by default

3d format an integer reserving 3 spaces, right justified by default

7.2f format a float, reserving 7 spaces, 2 after the decimal point, right justfied by default.

There are many additional options to position/format strings (padding, left/right justify etc), String Formatting Operations will provide more information.

Update for f-string mode. E.g.,

text, number, other_number = 'xxx', 123, 98
print(f'{text:10} {number:3d}  {other_number:7.2f}')

For right alignment

print(f'{text:>10} {number:3d}  {other_number:7.2f}')

If its only the cluttering what gives the problem in the constructor why not implement a initialize method that intializes the variables. This is a normal thing to do when the constructor gets to full with unnecessary stuff. Even in typed program languages like C# its normal convention to add an Initialize method to handle that.

Use StringBuilder:

StringBuilder sb = new StringBuilder(str);
sb.setCharAt(i - 1, 'k');
str = sb.toString();

    library(dplyr)
    library(tidyr)
    #supposing you want to arrange column 'c' in descending order and 'd' in ascending order. name of data frame is df
    ## first doing descending
    df<-arrange(df,desc(c))
    ## then the ascending order of col 'd;
    df <-arrange(df,d)

Guess I'm a bit late to the party, and although I agree that creating a seperate key for development (localhost) and product it is possible to do both in only 1 key.

When you use Application restrictions -> http referers -> Website restricitions you can enter wildcard urls.

However using a wildcard like .localhost/ or .localhost:{port}. (when already having .yourwebsite.com/* ) don't seem to work.

Just putting a single * does work but this basicly gives you an unlimited key which is not what you want either.

When you include the full path withhout using the wildcard * it also works, so in my case putting:

http://localhost{port}/
http://localhost:{port}/something-else/here

Makes the Google maps work both local as on www.yourwebsite.com using the same API key.

Anyway when having 2 seperate keys is also an option I would advise to do that.

From the Docs:

(function( $ ){
   $.fn.myfunction = function() {
      alert('hello world');
      return this;
   }; 
})( jQuery );

Then you do

$('#my_div').myfunction();

No need to initialize an empty DataFrame (you weren't even doing that, you'd need pd.DataFrame() with the parens).

Instead, to create a DataFrame where each series is a column,

1. make a list of Series, series, and
2. concatenate them horizontally with df = pd.concat(series, axis=1)

Something like:

series = [pd.Series(mat[name][:, 1]) for name in Variables]
df = pd.concat(series, axis=1)

Like

.classname
{
 opacity: 0.5;
}

Convert with JavaScript using .toLowerCase() and capitalize would do the rest.

You want to use %d or %i for integers. %@ is used for objects.

It's worth noting, though, that the following code will accomplish the same task and is much clearer.

label.intValue = count;

It's possible, as addressed in Issue #7396:

When you do want to insert a <br /> break tag using Markdown, you end a line with two or more spaces, then type return or Enter.

Swift 2:

    yourLabel.text = "your very long text"
    yourLabel.numberOfLines = 0
    yourLabel.lineBreakMode = NSLineBreakMode.ByWordWrapping
    yourLabel.frame.size.width = 200
    yourLabel.frame.size.height = CGFloat(MAXFLOAT)
    yourLabel.sizeToFit()

The interesting lines are sizeToFit() in conjunction with setting a frame.size.height to the max float, this will give room for long text, but sizeToFit() will force it to only use the necessary, but ALWAYS call it after setting the .frame.size.height .

I recommend setting a .backgroundColor for debug purposes, this way you can see the frame being rendered for each case.

Just found another solutions worked for me. You can use '\' sign before your one special.

passwd=\@31\&3*J

The severity level 16 in your example code is typically used for user-defined (user-detected) errors. The SQL Server DBMS itself emits severity levels (and error messages) for problems it detects, both more severe (higher numbers) and less so (lower numbers).

The state should be an integer between 0 and 255 (negative values will give an error), but the choice is basically the programmer's. It is useful to put different state values if the same error message for user-defined error will be raised in different locations, e.g. if the debugging/troubleshooting of problems will be assisted by having an extra indication of where the error occurred.

Express.js is a framework used for Node and it is most commonly used as a web application for node js.

Here is a link to a video on how to quickly set up a node app with express https://www.youtube.com/watch?v=QEcuSSnqvck

One thing to watch out for in benchmarks (especially phpbench.com), is even though the numbers are sound, the tests are not. Alot of the tests on phpbench.com are doing things at are trivial and abuse PHP's ability to cache array lookups to skew benchmarks or in the case of iterating over an array doesn't actually test it in real world cases (no one writes empty for loops). I've done my own benchmarks that I've found are fairly reflective of the real world results and they always show the language's native iterating syntax foreach coming out on top (surprise, surprise).

//make a nicely random array
$aHash1 = range( 0, 999999 );
$aHash2 = range( 0, 999999 );
shuffle( $aHash1 );
shuffle( $aHash2 );
$aHash = array_combine( $aHash1, $aHash2 );


$start1 = microtime(true);
foreach($aHash as $key=>$val) $aHash[$key]++;
$end1 = microtime(true);

$start2 = microtime(true);
while(list($key) = each($aHash)) $aHash[$key]++;
$end2 = microtime(true);


$start3 = microtime(true);
$key = array_keys($aHash);
$size = sizeOf($key);
for ($i=0; $i<$size; $i++) $aHash[$key[$i]]++;
$end3 = microtime(true);

$start4 = microtime(true);
foreach($aHash as &$val) $val++;
$end4 = microtime(true);

echo "foreach ".($end1 - $start1)."\n"; //foreach 0.947947025299
echo "while ".($end2 - $start2)."\n"; //while 0.847212076187
echo "for ".($end3 - $start3)."\n"; //for 0.439476966858
echo "foreach ref ".($end4 - $start4)."\n"; //foreach ref 0.0886030197144

//For these tests we MUST do an array lookup,
//since that is normally the *point* of iteration
//i'm also calling noop on it so that PHP doesn't
//optimize out the loopup.
function noop( $value ) {}

//Create an array of increasing indexes, w/ random values
$bHash = range( 0, 999999 );
shuffle( $bHash );

$bstart1 = microtime(true);
for($i = 0; $i < 1000000; ++$i) noop( $bHash[$i] );
$bend1 = microtime(true);

$bstart2 = microtime(true);
$i = 0; while($i < 1000000) { noop( $bHash[$i] ); ++$i; }
$bend2 = microtime(true);


$bstart3 = microtime(true);
foreach( $bHash as $value ) { noop( $value ); }
$bend3 = microtime(true);

echo "for ".($bend1 - $bstart1)."\n"; //for 0.397135972977
echo "while ".($bend2 - $bstart2)."\n"; //while 0.364789962769
echo "foreach ".($bend3 - $bstart3)."\n"; //foreach 0.346374034882

For me what worked was creating a new Angular project and just copied the angular.json file in the project that had a problem due to the fact that the angular.json file was missing.

For Mac OS X Yosemite I was able to use the open command.

Usage: open [-e] [-t] [-f] [-W] [-R] [-n] [-g] [-h] [-b <bundle identifier>] [-a <application>] [filenames] [--args arguments]
Help: Open opens files from a shell.
      By default, opens each file using the default application for that file.  
      If the file is in the form of a URL, the file will be opened as a URL.
Options: 
      -a                Opens with the specified application.
      -b                Opens with the specified application bundle identifier.
      -e                Opens with TextEdit.
      -t                Opens with default text editor.
      -f                Reads input from standard input and opens with TextEdit.
      -F  --fresh       Launches the app fresh, that is, without restoring windows. Saved persistent state is lost, excluding Untitled documents.
      -R, --reveal      Selects in the Finder instead of opening.
      -W, --wait-apps   Blocks until the used applications are closed (even if they were already running).
          --args        All remaining arguments are passed in argv to the application's main() function instead of opened.
      -n, --new         Open a new instance of the application even if one is already running.
      -j, --hide        Launches the app hidden.
      -g, --background  Does not bring the application to the foreground.
      -h, --header      Searches header file locations for headers matching the given filenames, and opens them.

This worked for me:

open eclipse.app --args clean

Java 8 Time API:

Instant now = Instant.now(); //current date
Instant after= now.plus(Duration.ofDays(300));
Date dateAfter = Date.from(after);

Equal height columns is the default behaviour for Bootstrap 4 grids.

.col { background: red; }_x000D_
.col:nth-child(odd) { background: yellow; }

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" integrity="sha384-rwoIResjU2yc3z8GV/NPeZWAv56rSmLldC3R/AZzGRnGxQQKnKkoFVhFQhNUwEyJ" crossorigin="anonymous">_x000D_
_x000D_
<div class="container">_x000D_
  <div class="row">_x000D_
    <div class="col">_x000D_
      1 of 3_x000D_
    </div>_x000D_
    <div class="col">_x000D_
      1 of 3_x000D_
      <br>_x000D_
      Line 2_x000D_
      <br>_x000D_
      Line 3_x000D_
    </div>_x000D_
    <div class="col">_x000D_
      1 of 3_x000D_
    </div>_x000D_
  </div>_x000D_
</div>

Submit form when your checkbox is checked

$(document).ready(function () {   
$("#yoursubmitbuttonid").click(function(){           
                if( $(".yourcheckboxclass").is(":checked") )
                {
                    $("#yourformId").submit();

                }else{
                    alert("Please select !!!");
                    return false;
                }
                return false;
            }); 
});

This function, based on the work by Laurenz Albe at https://www.cybertec-postgresql.com/en/index-your-foreign-key/, list all the foreign keys with missing indexes. The size of the table is shown, as for small tables the scanning performance could be superior to the index one.

--
-- function:    fkeys_missing_indexes
-- purpose:     list all foreing keys in the database without and index in the source table.
-- author:      Laurenz Albe
-- see:         https://www.cybertec-postgresql.com/en/index-your-foreign-key/
--
create or replace function oftool_fkey_missing_indexes () 
returns table (
  src_table     regclass,
  fk_columns    varchar,
  table_size    varchar,
  fk_constraint name,
  dst_table     regclass
)
as $$
select
  -- source table having ta foreign key declaration
  tc.conrelid::regclass as src_table,
  
  -- ordered list of foreign key columns
  string_agg(ta.attname, ',' order by tx.n) as fk_columns,
  
  -- source table size
  pg_catalog.pg_size_pretty (
    pg_catalog.pg_relation_size(tc.conrelid)
  ) as table_size,
  
  -- name of the foreign key constraint
  tc.conname as fk_constraint,
  
  -- name of the target or destination table
  tc.confrelid::regclass as dst_table
  
from pg_catalog.pg_constraint tc

-- enumerated key column numbers per foreign key
cross join lateral unnest(tc.conkey) with ordinality as tx(attnum, n)

-- name for each key column
join pg_catalog.pg_attribute ta on ta.attnum = tx.attnum and ta.attrelid = tc.conrelid

where not exists (
  -- is there ta matching index for the constraint?
  select 1 from pg_catalog.pg_index i
  where 
    i.indrelid = tc.conrelid and 
    -- the first index columns must be the same as the key columns, but order doesn't matter
    (i.indkey::smallint[])[0:cardinality(tc.conkey)-1] @> tc.conkey) and 
    tc.contype = 'f'
  group by 
    tc.conrelid, 
    tc.conname, 
    tc.confrelid
  order by 
    pg_catalog.pg_relation_size(tc.conrelid) desc;
$$ language sql;

test it this way,

select * from oftool_fkey_missing_indexes();

you'll see a list like this.

fk_columns            |table_size|fk_constraint                     |dst_table        |
----------------------|----------|----------------------------------|-----------------|
id_group              |0 bytes   |fk_customer__group                |im_group         |
id_product            |0 bytes   |fk_cart_item__product             |im_store_product |
id_tax                |0 bytes   |fk_order_tax_resume__tax          |im_tax           |
id_product            |0 bytes   |fk_order_item__product            |im_store_product |
id_tax                |0 bytes   |fk_invoice_tax_resume__tax        |im_tax           |
id_product            |0 bytes   |fk_invoice_item__product          |im_store_product |
id_article,locale_code|0 bytes   |im_article_comment_id_article_fkey|im_article_locale|

For Ruby >=2.4.0 you can use sum from Enumerables.

[1, 2, 3, 4].sum

It is dangerous to mokeypatch base classes. If you like danger and using an older version of Ruby, you could add #sum to the Array class:

class Array
  def sum
    inject(0) { |sum, x| sum + x }
  end
end

According to my practice, I use the 40 x 40 for standard iPad tab bar item icon, 80 X 80 for retina.

From the Apple reference. https://developer.apple.com/library/ios/documentation/UserExperience/Conceptual/MobileHIG/BarIcons.html#//apple_ref/doc/uid/TP40006556-CH21-SW1

If you want to create a bar icon that looks like it's related to the iOS 7 icon family, use a very thin stroke to draw it. Specifically, a 2-pixel stroke (high resolution) works well for detailed icons and a 3-pixel stroke works well for less detailed icons.

Regardless of the icon’s visual style, create a toolbar or navigation bar icon in the following sizes:

About 44 x 44 pixels About 22 x 22 pixels (standard resolution) Regardless of the icon’s visual style, create a tab bar icon in the following sizes:

About 50 x 50 pixels (96 x 64 pixels maximum) About 25 x 25 pixels (48 x 32 pixels maximum) for standard resolution

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

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

You can also do it with

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

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

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

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

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

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

Let's get pedantic, because there are differences that can actually affect your code's behavior. Much of the following is taken from comments made to an "Old New Thing" article.

Sometimes the memory returned by the new operator will be initialized, and sometimes it won't depending on whether the type you're newing up is a POD (plain old data), or if it's a class that contains POD members and is using a compiler-generated default constructor.

• In C++1998 there are 2 types of initialization: zero and default
• In C++2003 a 3rd type of initialization, value initialization was added.

Assume:

struct A { int m; }; // POD
struct B { ~B(); int m; }; // non-POD, compiler generated default ctor
struct C { C() : m() {}; ~C(); int m; }; // non-POD, default-initialising m

In a C++98 compiler, the following should occur:

• new A - indeterminate value

• new A() - zero-initialize

• new B - default construct (B::m is uninitialized)

• new B() - default construct (B::m is uninitialized)

• new C - default construct (C::m is zero-initialized)

• new C() - default construct (C::m is zero-initialized)

In a C++03 conformant compiler, things should work like so:

• new A - indeterminate value

• new A() - value-initialize A, which is zero-initialization since it's a POD.

• new B - default-initializes (leaves B::m uninitialized)

• new B() - value-initializes B which zero-initializes all fields since its default ctor is compiler generated as opposed to user-defined.

• new C - default-initializes C, which calls the default ctor.

• new C() - value-initializes C, which calls the default ctor.

So in all versions of C++ there's a difference between new A and new A() because A is a POD.

And there's a difference in behavior between C++98 and C++03 for the case new B().

This is one of the dusty corners of C++ that can drive you crazy. When constructing an object, sometimes you want/need the parens, sometimes you absolutely cannot have them, and sometimes it doesn't matter.

what about this?

top -c -p <PID>

Another way of doing this is using Uri.EscapeUriString(stringToEscape).

for me, my problem was because of iptables-services was not installed, this worked for me (CentOS):

sudo yum install iptables-services
sudo service docker restart

Pipe them through sort and uniq. This removes all duplicates.

uniq -d gives only the duplicates, uniq -u gives only the unique ones (strips duplicates).

There are couple of ways to establish HHTP connection and fetch data from a RESTFULL web service. The most recent one is GSON. But before you proceed to GSON you must have some idea of the most traditional way of creating an HTTP Client and perform data communication with a remote server. I have mentioned both the methods to send POST & GET requests using HTTPClient.

/**
 * This method is used to process GET requests to the server.
 * 
 * @param url 
 * @return String
 * @throws IOException
 */
public static String connect(String url) throws IOException {

    HttpGet httpget = new HttpGet(url);
    HttpResponse response;
    HttpParams httpParameters = new BasicHttpParams();
    // Set the timeout in milliseconds until a connection is established.
    // The default value is zero, that means the timeout is not used. 
    int timeoutConnection = 60*1000;
    HttpConnectionParams.setConnectionTimeout(httpParameters, timeoutConnection);
    // Set the default socket timeout (SO_TIMEOUT) 
    // in milliseconds which is the timeout for waiting for data.
    int timeoutSocket = 60*1000;

    HttpConnectionParams.setSoTimeout(httpParameters, timeoutSocket);
    HttpClient httpclient = new DefaultHttpClient(httpParameters);
    try {

        response = httpclient.execute(httpget);

        HttpEntity entity = response.getEntity();
        if (entity != null) {
            InputStream instream = entity.getContent();
            result = convertStreamToString(instream);
            //instream.close();
        }
    } 
    catch (ClientProtocolException e) {
        Utilities.showDLog("connect","ClientProtocolException:-"+e);
    } catch (IOException e) {
        Utilities.showDLog("connect","IOException:-"+e); 
    }
    return result;
}


 /**
 * This method is used to send POST requests to the server.
 * 
 * @param URL
 * @param paramenter
 * @return result of server response
 */
static public String postHTPPRequest(String URL, String paramenter) {       

    HttpParams httpParameters = new BasicHttpParams();
    // Set the timeout in milliseconds until a connection is established.
    // The default value is zero, that means the timeout is not used. 
    int timeoutConnection = 60*1000;
    HttpConnectionParams.setConnectionTimeout(httpParameters, timeoutConnection);
    // Set the default socket timeout (SO_TIMEOUT) 
    // in milliseconds which is the timeout for waiting for data.
    int timeoutSocket = 60*1000;

    HttpConnectionParams.setSoTimeout(httpParameters, timeoutSocket);
    HttpClient httpclient = new DefaultHttpClient(httpParameters);
    HttpPost httppost = new HttpPost(URL);
    httppost.setHeader("Content-Type", "application/json");
    try {
        if (paramenter != null) {
            StringEntity tmp = null;
            tmp = new StringEntity(paramenter, "UTF-8");
            httppost.setEntity(tmp);
        }
        HttpResponse httpResponse = null;
        httpResponse = httpclient.execute(httppost);
        HttpEntity entity = httpResponse.getEntity();
        if (entity != null) {
            InputStream input = null;
            input = entity.getContent();
            String res = convertStreamToString(input);
            return res;
        }
    } 
     catch (Exception e) {
        System.out.print(e.toString());
    }
    return null;
}

The ideas provided above are good. For fast access (in case you would like to make a real time application) you could try the following:

//suppose you read an image from a file that is gray scale
Mat image = imread("Your path", CV_8UC1);
//...do some processing
uint8_t *myData = image.data;
int width = image.cols;
int height = image.rows;
int _stride = image.step;//in case cols != strides
for(int i = 0; i < height; i++)
{
    for(int j = 0; j < width; j++)
    {
        uint8_t val = myData[ i * _stride + j];
        //do whatever you want with your value
    }
}

Pointer access is much faster than the Mat.at<> accessing. Hope it helps!

In Simple Words -

The export statement is used when creating JavaScript modules to export functions, objects, or primitive values from the module so they can be used by other programs with the import statement.

Here is a link to get clear understanding : MDN Web Docs

Here is my solution it is pretty straight forward since all I care about is not necessarily GCD or even accurate ratios: because then you get weird things like 345/113 which are not human comprehensible.

I basically set acceptable landscape, or portrait ratios and their "value" as a float... I then compare my float version of the ratio to each and which ever has the lowest absolute value difference is the ratio closest to the item. That way when the user makes it 16:9 but then removes 10 pixels from the bottom it still counts as 16:9...

accepted_ratios = {
    'landscape': (
        (u'5:4', 1.25),
        (u'4:3', 1.33333333333),
        (u'3:2', 1.5),
        (u'16:10', 1.6),
        (u'5:3', 1.66666666667),
        (u'16:9', 1.77777777778),
        (u'17:9', 1.88888888889),
        (u'21:9', 2.33333333333),
        (u'1:1', 1.0)
    ),
    'portrait': (
        (u'4:5', 0.8),
        (u'3:4', 0.75),
        (u'2:3', 0.66666666667),
        (u'10:16', 0.625),
        (u'3:5', 0.6),
        (u'9:16', 0.5625),
        (u'9:17', 0.5294117647),
        (u'9:21', 0.4285714286),
        (u'1:1', 1.0)
    ),
}


def find_closest_ratio(ratio):
    lowest_diff, best_std = 9999999999, '1:1'
    layout = 'portrait' if ratio < 1.0 else 'landscape'
    for pretty_str, std_ratio in accepted_ratios[layout]:
        diff = abs(std_ratio - ratio)
        if diff < lowest_diff:
            lowest_diff = diff
            best_std = pretty_str
    return best_std


def extract_ratio(width, height):
    try:
        divided = float(width)/float(height)
        if divided == 1.0: return '1:1'
        return find_closest_ratio(divided)
    except TypeError:
        return None

This is very simple you are trying to convert an integer to a list object !!! of course it will fail and it should ...

To demonstrate/prove this to you by using the example you provided ...just use type function for each case as below and the results will speak for itself !

>>> type(cow)
<class 'range'>
>>> 
>>> type(cow[0])
<class 'int'>
>>> 
>>> type(0)
<class 'int'>
>>> 
>>> >>> list(0)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: 'int' object is not iterable
>>> 

use android:layout_gravity instead of android:gravity

android:gravity sets the gravity of the content of the View its used on. android:layout_gravity sets the gravity of the View or Layout in its parent.

Do you mean counting the number of characters in a string? That's very simple

Dim strWord As String
Dim lngNumberOfCharacters as Long

strWord = "habit"
lngNumberOfCharacters = Len(strWord)
Debug.Print lngNumberOfCharacters

You must use OpenSSL and keytool.

OpenSSL for CER & PVK file > P12

openssl pkcs12 -export -name servercert -in selfsignedcert.crt -inkey serverprivatekey.key -out myp12keystore.p12

Keytool for p12 > JKS

keytool -importkeystore -destkeystore mykeystore.jks -srckeystore myp12keystore.p12 -srcstoretype pkcs12 -alias servercert

One more option is to ask MySQL for the query plan. This tells you two things:

• Whether there are any syntax errors in the query, if so the query plan command itself will fail
• How MySQL is planning to execute the query, e.g. what indexes it will use

In MySQL and most SQL databases the query plan command is describe, so you would do:

describe update ...;

purrr::flatten_*() is also a good option. the flatten_* functions add thin sanity checks and ensure type safety.

myList <- list('A'=1, 'B'=2, 'C'=3)

purrr::flatten_dbl(myList)
## [1] 1 2 3

Using Hacker's Delight Magic number calculator

int divideByThree(int num)
{
  return (fma(num, 1431655766, 0) >> 32);
}

Where fma is a standard library function defined in math.h header.

Ok, looks like your post got editted...

double foo[4];
double *bar_1 = &foo[0];

See how you can use the & to get the address of the beginning of the array structure? The following

Foo_1(double *bar, int size){ return bar[size-1]; }
Foo_2(double bar[], int size){ return bar[size-1]; }

will do the same thing.

If array is null, trying to derefrence array.Length will throw a NullReferenceException. If your code considers null to be an invalid value for array, you should reject it and blame the caller. One such pattern is to throw ArgumentNullException:

void MyMethod(string[] array)
{
    if (array == null) throw new ArgumentNullException(nameof(array));

    if (array.Length > 0)
    {
        // Do something with array…
    }
}

If you want to accept a null array as an indication to not do something or as an optional parameter, you may simply not access it if it is null:

void MyMethod(string[] array)
{
    if (array != null)
    {
        // Do something with array here…
    }
}

If you want to avoid touching array when it is either null or has zero length, then you can check for both at the same time with C#-6’s null coalescing operator.

void MyMethod(string[] array)
{
    if (array?.Length > 0)
    {
        // Do something with array…
    }
}

Superfluous Length Check

It seems strange that you are treating the empty array as a special case. In many cases, if you, e.g., would just loop over the array anyway, there’s no need to treat the empty array as a special case. foreach (var elem in array) {«body»} will simply never execute «body» when array.Length is 0. If you are treating array == null || array.Length == 0 specially to, e.g., improve performance, you might consider leaving a comment for posterity. Otherwise, the check for Length == 0 appears superfluous.

Superfluous code makes understanding a program harder because people reading the code likely assume that each line is necessary to solve some problem or achieve correctness. If you include unnecessary code, the readers are going to spend forever trying to figure out why that line is or was necessary before deleting it ;-).

Even a single space works

...Just open this answer for edit to see it.

Nested lists, deeper levels: ---- leave here an empty row * first level A item - no space in front the bullet character * second level Aa item - 1 space is enough * third level Aaa item - 5 spaces min * second level Ab item - 4 spaces possible too * first level B item

Nested lists, deeper levels:

• first level A item - no space in front the bullet character
  • second level Aa item - 1 space is enough
    • third level Aaa item - 5 spaces min
  • second level Ab item - 4 spaces possible too

• first level B item

  Nested lists, deeper levels:
   ...Skip a line and indent eight spaces. (as said in the editor-help, just on this page)
  * first level A item - no space in front the bullet character
   * second level Aa item - 1 space is enough
       * third level Aaa item - 5 spaces min
      * second level Ab item - 4 spaces possible too
  * first level B item
  

After reading cURL documentation on the options you used, it looks like the private key of certificate is not in the same file. If it is in different file, you need to mention it using --key file and supply passphrase.

So, please make sure that either cert.pem has private key (along with the certificate) or supply it using --key option.

Also, this documentation mentions that Note that this option assumes a "certificate" file that is the private key and the private certificate concatenated!

How they are concatenated? It is quite easy. Put them one after another in the same file.

You can get more help on this here.

I believe this might help you.

In (ANSI) C99, you can use a designated initializer to initialize a structure:

MY_TYPE a = { .flag = true, .value = 123, .stuff = 0.456 };

Edit: Other members are initialized as zero: "Omitted field members are implicitly initialized the same as objects that have static storage duration." (https://gcc.gnu.org/onlinedocs/gcc/Designated-Inits.html)

In curl version 7.22.0 on Ubuntu and 7.24.0 on OSX the solution to not show progress but to show errors is to use both -s (--silent) and -S (--show-error) like so:

curl -sS http://google.com > temp.html

This works for both redirected output > /some/file, piped output | less and outputting directly to the terminal for me.

Update: Since curl 7.67.0 there is a new option --no-progress-meter which does precisely this and nothing else, see clonejo's answer for more details.

Unfortunately, the meaning of things like ( and \( are swapped between Emacs style regular expressions and most other styles. So if you try to escape these you may be doing the opposite of what you want.

So you really have to know what style you are trying to quote.

I am using the following one: CSS Layout - 100 % height

Min-height

The #container element of this page has a min-height of 100%. That way, if the content requires more height than the viewport provides, the height of #content forces #container to become longer as well. Possible columns in #content can then be visualised with a background image on #container; divs are not table cells, and you don't need (or want) the physical elements to create such a visual effect. If you're not yet convinced; think wobbly lines and gradients instead of straight lines and simple color schemes.

Relative positioning

Because #container has a relative position, #footer will always remain at its bottom; since the min-height mentioned above does not prevent #container from scaling, this will work even if (or rather especially when) #content forces #container to become longer.

Padding-bottom

Since it is no longer in the normal flow, padding-bottom of #content now provides the space for the absolute #footer. This padding is included in the scrolled height by default, so that the footer will never overlap the above content.

Scale the text size a bit or resize your browser window to test this layout.

html,body {
    margin:0;
    padding:0;
    height:100%; /* needed for container min-height */
    background:gray;

    font-family:arial,sans-serif;
    font-size:small;
    color:#666;
}

h1 { 
    font:1.5em georgia,serif; 
    margin:0.5em 0;
}

h2 {
    font:1.25em georgia,serif; 
    margin:0 0 0.5em;
}
    h1, h2, a {
        color:orange;
    }

p { 
    line-height:1.5; 
    margin:0 0 1em;
}

div#container {
    position:relative; /* needed for footer positioning*/
    margin:0 auto; /* center, not in IE5 */
    width:750px;
    background:#f0f0f0;

    height:auto !important; /* real browsers */
    height:100%; /* IE6: treaded as min-height*/

    min-height:100%; /* real browsers */
}

div#header {
    padding:1em;
    background:#ddd url("../csslayout.gif") 98% 10px no-repeat;
    border-bottom:6px double gray;
}
    div#header p {
        font-style:italic;
        font-size:1.1em;
        margin:0;
    }

div#content {
    padding:1em 1em 5em; /* bottom padding for footer */
}
    div#content p {
        text-align:justify;
        padding:0 1em;
    }

div#footer {
    position:absolute;
    width:100%;
    bottom:0; /* stick to bottom */
    background:#ddd;
    border-top:6px double gray;
}
div#footer p {
    padding:1em;
    margin:0;
}

Works fine for me.

Remove the public keyword from int[] locations={1,2,3};. An access modifier isn't allowed inside a method, as its accessbility is defined by its method scope.

If your goal is to use this reference in many a method, you might want to move the declaration outside the method.

I have developed pure XML based word files in the past. I used .NET, but the language should not matter since it's truely XML. It was not the easiest thing to do (had a project that required it a couple years ago.) These do only work in Word 2007 or above - but all you need is Microsoft's white paper that describe what each tag does. You can accomplish all you want with the tags the same way as if you were using Word (of course a little more painful initially.)

i ran into a peculiar behavior when trying to deep copy dictionary property of class w/o assigning it to variable

new = copy.deepcopy(my_class.a) doesn't work i.e. modifying new modifies my_class.a

but if you do old = my_class.a and then new = copy.deepcopy(old) it works perfectly i.e. modifying new does not affect my_class.a

I am not sure why this happens, but hope it helps save some hours! :)

The JSON sample you provided is not valid. Check it online with this JSON Validator http://jsonlint.com/. You need to remove the extra comma on line 59.

One you have valid json you can use this code to convert it to an array.

json_decode($json, true);

Array
(
    [bpath] => http://www.sampledomain.com/
    [clist] => Array
        (
            [0] => Array
                (
                    [cid] => 11
                    [display_type] => grid
                    [ctitle] => abc
                    [acount] => 71
                    [alist] => Array
                        (
                            [0] => Array
                                (
                                    [aid] => 6865
                                    [adate] => 2 Hours ago
                                    [atitle] => test
                                    [adesc] => test desc
                                    [aimg] => 
                                    [aurl] => ?nid=6865
                                    [weburl] => news.php?nid=6865
                                    [cmtcount] => 0
                                )

                            [1] => Array
                                (
                                    [aid] => 6857
                                    [adate] => 20 Hours ago
                                    [atitle] => test1
                                    [adesc] => test desc1
                                    [aimg] => 
                                    [aurl] => ?nid=6857
                                    [weburl] => news.php?nid=6857
                                    [cmtcount] => 0
                                )

                        )

                )

            [1] => Array
                (
                    [cid] => 1
                    [display_type] => grid
                    [ctitle] => test1
                    [acount] => 2354
                    [alist] => Array
                        (
                            [0] => Array
                                (
                                    [aid] => 6851
                                    [adate] => 1 Days ago
                                    [atitle] => test123
                                    [adesc] => test123 desc
                                    [aimg] => 
                                    [aurl] => ?nid=6851
                                    [weburl] => news.php?nid=6851
                                    [cmtcount] => 7
                                )

                            [1] => Array
                                (
                                    [aid] => 6847
                                    [adate] => 2 Days ago
                                    [atitle] => test12345
                                    [adesc] => test12345 desc
                                    [aimg] => 
                                    [aurl] => ?nid=6847
                                    [weburl] => news.php?nid=6847
                                    [cmtcount] => 7
                                )

                        )

                )

        )

)

I am using Server version: 5.7.11-log MySQL Community Server (GPL)

Now we will solve this in a simple way.

I have created a table named "datetable"

mysql> describe datetable;
+---------+---------+------+-----+---------+-------+
| Field   | Type    | Null | Key | Default | Extra |
+---------+---------+------+-----+---------+-------+
| colid   | int(11) | NO   | PRI | NULL    |       |
| coldate | date    | YES  |     | NULL    |       |
+---------+---------+------+-----+---------+-------+
2 rows in set (0.00 sec)

now, wee will see the inserted records within.

mysql> select * from datetable;
+-------+------------+
| colid | coldate    |
+-------+------------+
|   101 | 2015-01-01 |
|   102 | 2015-05-01 |
|   103 | 2016-01-01 |
+-------+------------+
3 rows in set (0.00 sec)

and here our query to fetch records within two dates rather than those dates.

mysql> select * from datetable where coldate > '2015-01-01' and coldate < '2016-01-01';
+-------+------------+
| colid | coldate    |
+-------+------------+
|   102 | 2015-05-01 |
+-------+------------+
1 row in set (0.00 sec)

hope this would help many ones.

This should work.

$(".formData").val("valuesgoeshere")

For empty

$(".formData").val("")

If this does not work, you should post a jsFiddle.

Demo:

$(function() {_x000D_
  $(".resetInput").on("click", function() {_x000D_
    $(".formData").val("");_x000D_
  });_x000D_
})

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>_x000D_
<input type="text" class="formData" value="yoyoyo">_x000D_
_x000D_
_x000D_
<button class="resetInput">Click Here to reset</button>

We can also do this using randint.

from random import randint
l= ['a','b','c']

def get_rand_element(l):
    if l:
        return l[randint(0,len(l)-1)]
    else:
        return None

get_rand_element(l)

Since your files are not yet committed in branch1:

git stash
git checkout branch2
git stash pop

or

git stash
git checkout branch2
git stash list       # to check the various stash made in different branch
git stash apply x    # to select the right one

As commented by benjohn (see git stash man page):

To also stash currently untracked (newly added) files, add the argument -u, so:

git stash -u

I had the same problem but previous solutions not work for me. The only solution works for me is the following URL.

https://enlightensoft.wordpress.com/2013/01/15/maven-error-reading-error-in-opening-zip-file/

[EDIT]

Here I explain more about it

Suppose you got an error like below

[ERROR] error: error reading C:\Users\user\.m2\repository\org\jdom\jdom\1.1\jdom-1.1.jar; error in opening zip file

Then you have to follow these steps.

1. First, delete the existing jar C:\Users\user\.m2\repository\org\jdom\jdom\1.1\jdom-1.1.jar
2. Then you have to manually download relevant jar from Maven central repository. You can download from this link here
3. After that, you have to copy that downloaded jar into the previous directory.C:\Users\user\.m2\repository\org\jdom\jdom\1.1\

Then you can build your project using mvn clean install

hope this will help somebody.

You can create a Task with cancellation token, when you app goto background you can cancel this token.

You can do this in PCL https://developer.xamarin.com/guides/xamarin-forms/application-fundamentals/app-lifecycle

var cancelToken = new CancellationTokenSource();
Task.Factory.StartNew(async () => {
    await Task.Delay(10000);
    // call web API
}, cancelToken.Token);

//this stops the Task:
cancelToken.Cancel(false);

Anther solution is user Timer in Xamarin.Forms, stop timer when app goto background https://xamarinhelp.com/xamarin-forms-timer/

How about some simple testing? Used the code below:

long start = System.currentTimeMillis();

String a = "a";

String b = "b";

for (int i = 0; i < 10000000; i++) { //ten million times
     String c = a.concat(b);
}

long end = System.currentTimeMillis();

System.out.println(end - start);

• The "a + b" version executed in 2500ms.
• The a.concat(b) executed in 1200ms.

Tested several times. The concat() version execution took half of the time on average.

This result surprised me because the concat() method always creates a new string (it returns a "new String(result)". It's well known that:

String a = new String("a") // more than 20 times slower than String a = "a"

Why wasn't the compiler capable of optimize the string creation in "a + b" code, knowing the it always resulted in the same string? It could avoid a new string creation. If you don't believe the statement above, test for your self.

Most modern desktop browsers such as Chrome, Mozilla and Internet Explorer support images encoded as data URL. But there are problems displaying data URLs in some mobile browsers: Android Stock Browser and Dolphin Browser won't display embedded JPEGs.

I reccomend you to use the following tools for online base64 encoding/decoding:

• Encode to Base64 format

• Decode from Base64 format

Check the "Format as Data URL" option to format as a Data URL.

I suspect that the server method is throwing an exception after it passes your breakpoint. Use Firefox/Firebug or the IE8 developer tools to look at the actual response you are getting from the server. If there has been an exception you'll get the YSOD html, which should help you figure out where to look.

One more thing -- your data property should be {} not "{}", the former is an empty object while the latter is a string that is invalid as a query parameter. Better yet, just leave it out if you aren't passing any data.

The slidingExpiration=true value is basically saying that after every request made, the timer is reset and as long as the user makes a request within the timeout value, he will continue to be authenticated.

This is not correct. The authentication cookie timeout will only be reset if half the time of the timeout has passed.

See for example https://support.microsoft.com/de-ch/kb/910439/en-us or https://itworksonmymachine.wordpress.com/2008/07/17/forms-authentication-timeout-vs-session-timeout/

diff --color option was added to GNU diffutils 3.4 (2016-08-08)

This is the default diff implementation on most distros, which will soon be getting it.

Ubuntu 18.04 has diffutils 3.6 and therefore has it.

On 3.5 it looks like this:

Tested with:

diff --color -u \
  <(seq 6 | sed 's/$/ a/') \
  <(seq 8 | grep -Ev '^(2|3)$' | sed 's/$/ a/')

Apparently added in commit c0fa19fe92da71404f809aafb5f51cfd99b1bee2 (Mar 2015).

Word-level diff

Like diff-highlight. Not possible it seems, feature request: https://lists.gnu.org/archive/html/diffutils-devel/2017-01/msg00001.html

Related threads:

• Using 'diff' (or anything else) to get character-level diff between text files
• https://unix.stackexchange.com/questions/11128/diff-within-a-line
• https://superuser.com/questions/496415/using-diff-on-a-long-one-line-file

ydiff does it though, see below.

ydiff side-by-side word level diff

https://github.com/ymattw/ydiff

Is this Nirvana?

python3 -m pip install --user ydiff
diff -u a b | ydiff -s

Outcome:

If the lines are too narrow (default 80 columns), fit to screen with:

diff -u a b | ydiff -w 0 -s

Contents of the test files:

a

1
2
3
4
5 the original line the original line the original line the original line
6
7
8
9
10
11
12
13
14
15 the original line the original line the original line the original line
16
17
18
19
20

b

1
2
3
4
5 the original line teh original line the original line the original line
6
7
8
9
10
11
12
13
14
15 the original line the original line the original line the origlnal line
16
17
18
19
20

ydiff Git integration

ydiff integrates with Git without any configuration required.

From inside a git repository, instead of git diff, you can do just:

ydiff -s

and instead of git log:

ydiff -ls

See also: How can I get a side-by-side diff when I do "git diff"?

Tested on Ubuntu 16.04, git 2.18.0, ydiff 1.1.

After Python 3.0 onward, print is no longer just a statement, its a function instead. and is included in PEP 3105.

Also I think the Python 3.0 package has still these special functionality. Lets see its usability through a traditional "Pyramid program" in Python:

from __future__ import print_function

class Star(object):
    def __init__(self,count):
        self.count = count

    def start(self):
        for i in range(1,self.count):
            for j in range (i): 
                print('*', end='') # PEP 3105: print As a Function 
            print()

a = Star(5)
a.start()

Output:
*
**
***
****

If we use normal print function, we won't be able to achieve the same output, since print() comes with a extra newline. So every time the inner for loop execute, it will print * onto the next line.

I had the same issue, it turns that I had my project configured as many of you stated above, yet the problem persisted, so I went deeper and came across that I was using Apache Tomcat 6 as my Runtime Server, so the fix was simple, I just upgraded the project to use Apache Tomcat 7 and that's all, finally the IDE recognized javax.servlet.annotation.WebServlet annotation.

@ Mike Eng,

On selecting the text background color, text color can be changed with the help of ::selection, note that ::selection works in in chrome, to make that work in firefox based browsers try this one ::-moz-selection

Try the following snippet of code in reset.css or the css page where exactly you want to apply the effect.

::selection{
   //Works only for the chrome browsers
   background-color: #CFCFCF; //This turns the background color to Gray
   color: #000; // This turns the selected font color to Black
}

::-moz-selection{
   //Works for the firefox based browsers
   background-color: #CFCFCF; //This turns the background color to Gray
   color: #000; // This turns the selected font color to Black
}

The above code will work even in the input boxes too.

Another way to do this is to add the new characters to the string as follows:

Dim str As String

str = ""

To append text to your string this way:

str = str & "and this is more text"

Following script will give message on Chrome and IE:

<script>
window.onbeforeunload = function (e) {
// Your logic to prepare for 'Stay on this Page' goes here 

    return "Please click 'Stay on this Page' and we will give you candy";
};
</script>

Chrome

IE

on Firefox you will get generic message

Mechanism is synchronous so no server calls to delay will work, you still can prepare a mechanism like modal window that is shown if user decides to stay on page, but no way to prevent him from leaving.

Response to question in comment

F5 will fire event again, so will Atl+F4.

** operator would be helpful here.

** operator will unpack the dict elements and thus **{'type':'Event'} would be treated as type='Event'

func(**{'type':'Event'}) is same as func(type='Event') i.e the dict elements would be converted to the keyword arguments.

FYI

* will unpack the list elements and they would be treated as positional arguments.

func(*['one', 'two']) is same as func('one', 'two')

If you need to call plot multiply times, you can also use the "label" argument:

ax = df1.plot(label='df1', y='y_var')
ax = df2.plot(label='df2', y='y_var')

While this is not the case in the OP question, this can be helpful if the DataFrame is in long format and you use groupby before plotting.

I found the following was a better solution depending on the content of your left, center and right items. A width of 100% without a margin caused overlapping of divs and was preventing anchor tags to work correctly - that is without the messy use of z-indexes.

.navbar-brand
{
    position: absolute;
    width: 100%;
    left: 0;
    margin: auto;
    margin-left: 48%;
}

Steps to solve this problem

note: This problem mainly occurs due to which we haven't assigned our user name and email id in git so what we gonna do is assigning it in git

1. Open git that you have installed

2. Now we have to assign our user name and email id

3. Just type git config --user.name <your_name> and click enter (you can mention or type any name you want)

4. Similarly type git config --user.email <[email protected]> and click enter (you have to type your primary mail id)

5. And that's it.

   Have a Good Day!!!.

You can declare SqlConnection and SqlCommand instances at global level so that you can use it through out the class. Connection string is in Web.Config.

SqlConnection sqlConn = new SqlConnection(WebConfigurationManager.ConnectionStrings["SqlConnector"].ConnectionString);
SqlCommand sqlcomm = new SqlCommand();

Now you can use the below method to pass values to Stored Procedure and get the DataSet.

public DataSet GetDataSet(string paramValue)
{
    sqlcomm.Connection = sqlConn;
    using (sqlConn)
    {
        try
        {
            using (SqlDataAdapter da = new SqlDataAdapter())
            {  
                // This will be your input parameter and its value
                sqlcomm.Parameters.AddWithValue("@ParameterName", paramValue);

                // You can retrieve values of `output` variables
                var returnParam = new SqlParameter
                {
                    ParameterName = "@Error",
                    Direction = ParameterDirection.Output,
                    Size = 1000
                };
                sqlcomm.Parameters.Add(returnParam);
                // Name of stored procedure
                sqlcomm.CommandText = "StoredProcedureName";
                da.SelectCommand = sqlcomm;
                da.SelectCommand.CommandType = CommandType.StoredProcedure;

                DataSet ds = new DataSet();
                da.Fill(ds);                            
            }
        }
        catch (SQLException ex)
        {
            Console.WriteLine("SQL Error: " + ex.Message);
        }
        catch (Exception e)
        {
            Console.WriteLine("Error: " + e.Message);
        }
    }
    return new DataSet();
}

The following is the sample of connection string in config file

<connectionStrings>
    <add name="SqlConnector"
         connectionString="data source=.\SQLEXPRESS;Integrated Security=SSPI;Initial Catalog=YourDatabaseName;User id=YourUserName;Password=YourPassword"
         providerName="System.Data.SqlClient" />
</connectionStrings>

Sometimes it's not possible to close the content container. The solution we are using is a bit different but prevent a overflow because of the firefox scrollbar size!

.full-width {
 margin-top: 15px;
 margin-bottom: 15px;
 position: relative;
 width: calc(100vw - 10px);
 margin-left: calc(-50vw + 5px);
 left: 50%;
}

Here is a example: https://jsfiddle.net/RubbelDeKatz/wvt9253q

You are looking to see if a single value is in an array. Use in_array.

However note that case is important, as are any leading or trailing spaces. Use var_dump to find out the length of the strings too, and see if they fit.

I've found that binding an element.click in a function that happens more than once will queue it so next time you click it, it will trigger as many times as the binding function was executed. Newcomer mistake probably on my end but I hope it helps. TL,DR: Make sure you bind all clicks on a setup function that only happens once.

Update to MySQL 8.0.16 to use checks:

As of MySQL 8.0.16, CREATE TABLE permits the core features of table and column CHECK constraints, for all storage engines. CREATE TABLE permits the following CHECK constraint syntax, for both table constraints and column constraints

MySQL Checks Documentation

You can activate the modal without writing any JavaScript simply via data attributes.

The option "show" set to true shows the modal when initialized:

<div class="modal fade" tabindex="-1" role="dialog" data-show="true"></div>