Programs & Examples On #Lowpro

Resolved the problem using Jackson library. Prints are called out of Main class and all POJO classes are created. Here is the code snippets.

MainClass.java

public class MainClass {
  public static void main(String[] args) throws JsonParseException, 
       JsonMappingException, IOException {

String jsonStr = "{\r\n" + "    \"id\": 2,\r\n" + " \"socket\": \"0c317829-69bf- 
             43d6-b598-7c0c550635bb\",\r\n"
            + " \"type\": \"getDashboard\",\r\n" + "    \"data\": {\r\n"
            + "     \"workstationUuid\": \"ddec1caa-a97f-4922-833f- 
            632da07ffc11\"\r\n" + " },\r\n"
            + " \"reply\": true\r\n" + "}";

    ObjectMapper mapper = new ObjectMapper();

    MyPojo details = mapper.readValue(jsonStr, MyPojo.class);

    System.out.println("Value for getFirstName is: " + details.getId());
    System.out.println("Value for getLastName  is: " + details.getSocket());
    System.out.println("Value for getChildren is: " + 
      details.getData().getWorkstationUuid());
    System.out.println("Value for getChildren is: " + details.getReply());

}

MyPojo.java

public class MyPojo {
    private String id;

    private Data data;

    private String reply;

    private String socket;

    private String type;

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public Data getData() {
        return data;
    }

    public void setData(Data data) {
        this.data = data;
    }

    public String getReply() {
        return reply;
    }

    public void setReply(String reply) {
        this.reply = reply;
    }

    public String getSocket() {
        return socket;
    }

    public void setSocket(String socket) {
        this.socket = socket;
    }

    public String getType() {
        return type;
    }

    public void setType(String type) {
        this.type = type;
    } 
}

Data.java

public class Data {
    private String workstationUuid;

    public String getWorkstationUuid() {
        return workstationUuid;
    }

    public void setWorkstationUuid(String workstationUuid) {
        this.workstationUuid = workstationUuid;
    }   
}

RESULTS:

Value for getFirstName is: 2
Value for getLastName  is: 0c317829-69bf-43d6-b598-7c0c550635bb
Value for getChildren is: ddec1caa-a97f-4922-833f-632da07ffc11
Value for getChildren is: true

you can also check this link

SELECT * FROM master_question WHERE 1 ORDER BY question_id ASC LIMIT 20

for more detail click here

You can do:

#if MACRO0
    //code...
#elif MACRO1
    //code...
#endif

…where the identifier can be:

    __linux__       Defined on Linux
    __sun           Defined on Solaris
    __FreeBSD__     Defined on FreeBSD
    __NetBSD__      Defined on NetBSD
    __OpenBSD__     Defined on OpenBSD
    __APPLE__       Defined on Mac OS X
    __hpux          Defined on HP-UX
    __osf__         Defined on Tru64 UNIX (formerly DEC OSF1)
    __sgi           Defined on Irix
    _AIX            Defined on AIX
    _WIN32          Defined on Windows

I saved NSDictionary normally and able to get it correctly.

 dictForaddress = placemark.addressDictionary! as NSDictionary
        let userDefaults = UserDefaults.standard
        userDefaults.set(dictForaddress, forKey:Constants.kAddressOfUser)

// For getting data from NSDictionary.

let userDefaults = UserDefaults.standard
    let dictAddress = userDefaults.object(forKey: Constants.kAddressOfUser) as! NSDictionary

Can I recommend doing it this way, define your test like this:

@RunWith(SpringJUnit4ClassRunner.class)
@TestExecutionListeners({
    TestPreperationExecutionListener.class
    })
@Transactional
@ActiveProfiles(profiles = "localtest")
@ContextConfiguration
public class TestContext {

  @Test
  public void testContext(){

  }

  @Configuration
  @PropertySource("classpath:/myprops.properties")
  @ImportResource({"classpath:context.xml" })
  public static class MyContextConfiguration{

  }
}

with the following content in myprops.properties file:

spring.profiles.active=localtest

With this your second properties file should get resolved:

META-INF/spring/config_${spring.profiles.active}.properties

I found this article enormously helpful. Huge thanks to yonran. I wanted to pass on some additional learning I found while implementing some of the techniques he provided. In FF6 and Chrome 9, support for media queries from JS was added, which can greatly simplify the media query approach necessary for determining zoom in FF. See the docs at MDN here. For my purposes, I only needed to detect whether the browser was zoomed in or out, I had no need for the actual zoom factor. I was able to get my answer with one line of JavaScript:

var isZoomed = window.matchMedia('(max--moz-device-pixel-ratio:0.99), (min--moz-device-pixel-ratio:1.01)').matches;

Combining this with the IE8+ and Webkit solutions, which were also single lines, I was able to detect zoom on the vast majority of browsers hitting our app with only a few lines of code.

I'm very late to the party here, but if you use an IDE like PyCharm, there's an option in 'Edit Configurations' under the 'Run' menu (Run > Edit Configurations) where you can specify a default port. This of course is relevant only if you are debugging/testing through PyCharm.

It looks like the latest version of anaconda forces install of pyqt5.6 over any pyqt build, which will be fatal for your applications. In a terminal, Try:

conda install -c anaconda pyqt=4.11.4

It will prompt to downgrade conda client. After that, it should be good.

UPDATE: If you want to know what pyqt versions are available for install, try:

conda search pyqt

UPDATE: The most recent version of conda installs anaconda-navigator. This depends on qt5, and should first be removed:

conda uninstall anaconda-navigator

Then install "newest" qt4:

conda install qt=4

It was yelling at me about a line in my xml file (which was perfectly valid and never had problems the entire time I've worked on the project). I deleted the line and even after running again and cleaning and rebuilding it kept yelling at me about the completely blank line. I restarted android studio and removed the .gradle folder and it finally worked. Hopefully someone in my shoes that had all of the other answers in this thread fail them will see this answer and save a few hours.

I had this problem (clicked a prompt to "sync with gradle" on my perfectly valid and working project and it killed everything) and I researched for hours trying to figure out how to fix this, including this thread among many others. I finally found my solution, so hopefully, it'll help somebody (and hopefully they fix this terrible system)

Try this way: (for example delete the job)

curl --silent --show-error http://<username>:<api-token>@<jenkins-server>/job/<job-name>/doDelete

The api-token can be obtained from http://<jenkins-server>/user/<username>/configure.

To split the difference of opinion

I prefer:

   xls.DisplayAlerts = False    
   wb.SaveAs fullFilePath, AccessMode:=xlExclusive, ConflictResolution:=xlLocalSessionChanges
   xls.DisplayAlerts = True

Check your namespaces. I had and issue with that. I found that out by adding another web service to the project to dup it like you did yours and noticed the namespace was different. I had renamed it at the beginning of the project and it looks like its persisted.

var Hello = React.createClass({
    render: function() {
      return (
        <div className="divClass">
           <img src={this.props.url} alt={`${this.props.title}'s picture`}  className="img-responsive" />
           <span>Hello {this.props.name}</span>
        </div>
      );
    }
});

To really convert from a string to a number properly, you need to use an instance of NSNumberFormatter configured for the locale from which you're reading the string.

Different locales will format numbers differently. For example, in some parts of the world, COMMA is used as a decimal separator while in others it is PERIOD — and the thousands separator (when used) is reversed. Except when it's a space. Or not present at all.

It really depends on the provenance of the input. The safest thing to do is configure an NSNumberFormatter for the way your input is formatted and use -[NSFormatter numberFromString:] to get an NSNumber from it. If you want to handle conversion errors, you can use -[NSFormatter getObjectValue:forString:range:error:] instead.

If all of the matrices are going to be the same size (i.e. 500x800), then you can just make a 3D array:

nUnknown;  % The number of unknown arrays
myArray = zeros(500,800,nUnknown);

To access one array, you would use the following syntax:

subMatrix = myArray(:,:,3);  % Gets the third matrix

You can add more matrices to myArray in a couple of ways:

myArray = cat(3,myArray,zeros(500,800));
% OR
myArray(:,:,nUnknown+1) = zeros(500,800);

If each matrix is not going to be the same size, you would need to use cell arrays like Hosam suggested.

EDIT: I missed the part about running out of memory. I'm guessing your nUnknown is fairly large. You may have to switch the data type of the matrices (single or even a uintXX type if you are using integers). You can do this in the call to zeros:

myArray = zeros(500,800,nUnknown,'single');

Varchar cuts off trailing spaces if the entered characters is shorter than the declared length, while char will not. Char will pad spaces and will always be the length of the declared length. In terms of efficiency, varchar is more adept as it trims characters to allow more adjustment. However, if you know the exact length of char, char will execute with a bit more speed.

curl --anyauth

Tells curl to figure out authentication method by itself, and use the most secure one the remote site claims to support. This is done by first doing a request and checking the response- headers, thus possibly inducing an extra network round-trip. This is used instead of setting a specific authentication method, which you can do with --basic, --digest, --ntlm, and --negotiate.

If all of these rows are related and you need to alter the tabular data ... why not just wrap the entire table in a form, and change GET to POST (unless you know that you're not going to be sending more than the max amount of data a GET request can send).

I cannot wrap the entire table in a form, because some input fields of each row are input type="file" and files may be large. When the user submits the form, I want to POST only fields of current row, not all fields of the all rows which may have unneeded huge files, causing form to submit very slowly.

So, I tried incorrect nesting: tr/form and form/tr. However, it works only when one does not try to add new inputs dynamically into the form. Dynamically added inputs will not belong to incorrectly nested form, thus won't get submitted. (valid form/table dynamically inputs are submitted just fine).

Nesting div[display:table]/form/div[display:table-row]/div[display:table-cell] produced non-uniform widths of grid columns. I managed to get uniform layout when I replaced div[display:table-row] to form[display:table-row] :

div.grid {
    display: table;
}

div.grid > form {
    display: table-row;


div.grid > form > div {
    display: table-cell;
}
div.grid > form > div.head {
    text-align: center;
    font-weight: 800;
}

For the layout to be displayed correctly in IE8:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
...
<meta http-equiv="X-UA-Compatible" content="IE=8, IE=9, IE=10" />

Sample of output:

<div class="grid" id="htmlrow_grid_item">
<form>
    <div class="head">Title</div>
    <div class="head">Price</div>
    <div class="head">Description</div>
    <div class="head">Images</div>
    <div class="head">Stock left</div>
    <div class="head">Action</div>
</form>
<form action="/index.php" enctype="multipart/form-data" method="post">
    <div title="Title"><input required="required" class="input_varchar" name="add_title" type="text" value="" /></div>

It would be much harder to make this code work in IE6/7, however.

make the image float: left; and the text float: right;

Take a look at this fiddle I used a picture online but you can just swap it out for your picture.

To prevent anything from execution if a condition is met one should use the continue and to get out of the loop if a condition is met one should use the break.

For example in the below mentioned code.

 for(int i=0;i<5;i++){

        if(i==3){

           continue;

        }
       System.out.println(i);
     }

The above code will print the result : 0 1 2 4

NOw consider this code

 for(int i=0;i<5;i++){


            if(i==3){

                break;

            }
            System.out.println(i);
         }

This code will print 0 1 2

That is the basic difference in the continue and break.

When I encountered the same problem, i forgot to add "compiled version of library(with extension .a)". Normally we add the library of the imported project in Target Dependency in Build Phases but we forget to add "compiled library" in Link Binary with Libraries in Build Phases.

You can't do this directly - UITextField has no maxLength attribute, but you can set the UITextField's delegate, then use:

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string

Ok, well, first of all, let me check if I am on the same page as you:

• You installed python
• You did brew install mysql
• You did export PATH=$PATH:/usr/local/mysql/bin
• And finally, you did pip install MySQL-Python (or pip3 install mysqlclient if using python 3)

If you did all those steps in the same order, and you still got an error, read on to the end, if, however, you did not follow these exact steps try, following them from the very beginning.

So, you followed the steps, and you're still geting an error, well, there are a few things you could try:

1. Try running which mysql_config from bash. It probably won't be found. That's why the build isn't finding it either. Try running locate mysql_config and see if anything comes back. The path to this binary needs to be either in your shell's $PATH environment variable, or it needs to be explicitly in the setup.py file for the module assuming it's looking in some specific place for that file.

2. Instead of using MySQL-Python, try using 'mysql-connector-python', it can be installed using pip install mysql-connector-python. More information on this can be found here and here.

3. Manually find the location of 'mysql/bin', 'mysql_config', and 'MySQL-Python', and add all these to the $PATH environment variable.

4. If all above steps fail, then you could try installing 'mysql' using MacPorts, in which case the file 'mysql_config' would actually be called 'mysql_config5', and in this case, you would have to do this after installing: export PATH=$PATH:/opt/local/lib/mysql5/bin. You can find more details here.

Note1: I've seen some people saying that installing python-dev and libmysqlclient-dev also helped, however I do not know if these packages are available on Mac OS.

Note2: Also, make sure to try running the commands as root.

I got my answers from (besides my brain) these places (maybe you could have a look at them, to see if it would help): 1, 2, 3, 4.

I hoped I helped, and would be happy to know if any of this worked, or not. Good luck.

Not quite answering the question, but rather than having

if (error condition that would break you out of this) {
    break;  // leaves looping structure
}

You should probably have

while(condition && !error_condition)

Also, I'd go with a Timer.

I met the problem because of the primary key generation is wrong,when I insert a row like this:

public void addTerminal(String typeOfDevice,Map<Byte,Integer> map) {
        // TODO Auto-generated method stub
        try {
            Set<Byte> keySet = map.keySet();
            for (Byte byte1 : keySet) {
                Device device=new Device();
                device.setNumDevice(DeviceCount.map.get(byte1));
                device.setTimestamp(System.currentTimeMillis());
                device.setTypeDevice(byte1);
                this.getHibernateTemplate().save(device);
            }
            System.out.println("hah");
        }catch (Exception e) {
            // TODO: handle exception
            logger.warn("wrong");
            logger.warn(e.getStackTrace()+e.getMessage());
        }
}

I change the id generator class to identity

<id name="id" type="int">
    <column name="id" />
    <generator class="identity"  />
 </id>

Normally the ON clause comes from the mapping's join columns, but the JPA 2.1 draft allows for additional conditions in a new ON clause.

See,

http://wiki.eclipse.org/EclipseLink/UserGuide/JPA/Basic_JPA_Development/Querying/JPQL#ON

You can use the grep alternative sift here (disclaimer: I am the author).

It support multiline matching and limiting the search to specific file types out of the box:

sift -m --files '*.py' 'YOUR_PATTERN'

(search all *.py files for the specified multiline regex pattern)

It is available for all major operating systems. Take a look at the samples page to see how it can be used to to extract multiline values from an XML file.

Try using the InStr function which returns the index in the string at which the character was found. If InStr returns 0, the string was not found.

If InStr(myString, "A") > 0 Then

InStr MSDN Website

For the error on the line assigning to newStr, convert oldStr.IndexOf to that InStr function also.

Left(oldStr, InStr(oldStr, "A"))

You must use a tool called a "header". In a header you declare the function that you want to use. Then you include it in both files. A header is a separate file included using the #include directive. Then you may call the other function.

other.h

void MyFunc();

main.cpp

#include "other.h"
int main() {
    MyFunc();
}

other.cpp

#include "other.h"
#include <iostream>
void MyFunc() {
    std::cout << "Ohai from another .cpp file!";
    std::cin.get();
}

In Faircom SQL (which is a pseudo MySQL), i can do this in a super simple SQL Statement, just as follows:

SELECT SKIP 10 * FROM TABLE ORDER BY Id

Obviously you can just replace 10 with any declared variable of your desire.

I don't have access to MS SQL or other platforms, but I'll be really surprised MS SQL doesn't support something like this.

You'll need a using System.Net.Http at the top.

There is another way to change the background color, however it is a hack and might fail on future versions of Android if the View hierarchy of the Window and its title is changed. However, the code won't crash, just miss setting the wanted color, in such a case.

In your Activity, like onCreate, do:

View titleView = getWindow().findViewById(android.R.id.title);
if (titleView != null) {
  ViewParent parent = titleView.getParent();
  if (parent != null && (parent instanceof View)) {
    View parentView = (View)parent;
    parentView.setBackgroundColor(Color.rgb(0x88, 0x33, 0x33));
  }
}

Add an id then to each

<li> add data-target="myMenu" data-toggle="collapse"
<div id="myMenu" class="nav-collapse">
    <ul class="nav">
      <li class="active" data-target="myMenu" data-toggle="collapse"><a href="#home">Home</a></li>
      <li data-target="myMenu" data-toggle="collapse"><a href="#about">About</a></li>
      <li data-target="myMenu" data-toggle="collapse"><a href="#portfolio">Portfolio</a></li>
      <li data-target="myMenu" data-toggle="collapse"><a href="#services">Services</a></li>
      <li data-target="myMenu" data-toggle="collapse"><a href="#contact">Contact</a></li>
    </ul>
</div>

I had exactly the same problem lately, and I installed Wireshark (it is a network monitoring tool). You can see everything with this, except encrypted traffic (HTTPS).

You can do it with regular JavaScript this way:

document.getElementById('h1_id').innerHTML = 'h1 content here';

Here is the doc for getElementById and the innerHTML property.

The innerHTML property description:

A DOMString containing the HTML serialization of the element's descendants. Setting the value of innerHTML removes all of the element's descendants and replaces them with nodes constructed by parsing the HTML given in the string htmlString.

private static Dictionary<string, string> GetAuthors()
{
    return typeof(Book).GetProperties()
        .SelectMany(prop => prop.GetCustomAttributes())
        .OfType<AuthorAttribute>()
        .ToDictionary(a => a.GetType().Name.Replace("Attribute", ""), a => a.Name);
}

Example using generics (target framework 4.5)

using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;

private static Dictionary<string, string> GetAttribute<TAttribute, TType>(
    Func<TAttribute, string> valueFunc)
    where TAttribute : Attribute
{
    return typeof(TType).GetProperties()
        .SelectMany(p => p.GetCustomAttributes())
        .OfType<TAttribute>()
        .ToDictionary(a => a.GetType().Name.Replace("Attribute", ""), valueFunc);
}

Usage

var dictionary = GetAttribute<AuthorAttribute, Book>(a => a.Name);

you don't need to specify a "SimpleDateFormat", it's simple: You must do specify the constant "DatatypeConstants.FIELD_UNDEFINED" where you don't want to show

GregorianCalendar cal = new GregorianCalendar();
cal.setTime(new Date());
XMLGregorianCalendar xmlDate = DatatypeFactory.newInstance().newXMLGregorianCalendarDate(cal.get(Calendar.YEAR), cal.get(Calendar.MONTH)+1, cal.get(Calendar.DAY_OF_MONTH), DatatypeConstants.FIELD_UNDEFINED);

If the destination table does exist but you don't want to specify column names:

DECLARE @COLUMN_LIST NVARCHAR(MAX);
DECLARE @SQL_INSERT NVARCHAR(MAX);

SET @COLUMN_LIST = (SELECT DISTINCT
    SUBSTRING(
        (
            SELECT ', table1.' + SYSCOL1.name  AS [text()]
            FROM sys.columns SYSCOL1
            WHERE SYSCOL1.object_id = SYSCOL2.object_id and SYSCOL1.is_identity <> 1
            ORDER BY SYSCOL1.object_id
            FOR XML PATH ('')
        ), 2, 1000)
FROM
    sys.columns SYSCOL2
WHERE
    SYSCOL2.object_id = object_id('dbo.TableOne') )

SET @SQL_INSERT =  'INSERT INTO dbo.TableTwo SELECT ' + @COLUMN_LIST + ' FROM dbo.TableOne table1 WHERE col3 LIKE ' + @search_key
EXEC sp_executesql @SQL_INSERT

The !important rule is a way to make your CSS cascade but also have the rules you feel are most crucial always be applied. A rule that has the !important property will always be applied no matter where that rule appears in the CSS document.

So, if you have the following:

.class {
   color: red !important;
}
.outerClass .class {
   color: blue;
}

the rule with the important will be the one applied (not counting specificity)

I believe !important appeared in CSS1 so every browser supports it (IE4 to IE6 with a partial implementation, IE7+ full)

Also, it's something that you don't want to use pretty often, because if you're working with other people you can override other properties.

Maybe it's obvious for you guys but I scratched my head for a while because the folder didn't show up in the files app. I actually needed to store something in the folder. you could achieve this by

• saving some files into your document directory of the app
• move something from iCloud Drive to your app (in the move dialog the folder will show up). As soon as there are no files in your folder anymore, it's gonna disappear from the "on my iPad tab".

If choice is available, use this:

choice /C X /T 10 /D X > nul

where /T 10 is the number of seconds to delay. Note the syntax can vary depending on your Windows version, so use CHOICE /? to be sure.

python: read lines from compressed text files

Using gzip.GzipFile:

import gzip

with gzip.open('input.gz','r') as fin:        
    for line in fin:        
        print('got line', line)

There is a more simpler way using the mongoose exists function

router.post("/groups/members", async (ctx) => {
    const group_name = ctx.request.body.group_membership.group_name;
    const member_name = ctx.request.body.group_membership.group_members;
    const GroupMembership = GroupModels.GroupsMembers;
    console.log("group_name : ", group_name, "member : ", member_name);
    try {
        if (
            (await GroupMembership.exists({
                "group_membership.group_name": group_name,
            })) === false
        ) {
            console.log("new function");
            const newGroupMembership = await GroupMembership.insertMany({
                group_membership: [
                    { group_name: group_name, group_members: [member_name] },
                ],
            });
            await newGroupMembership.save();
        } else {
            const UpdateGroupMembership = await GroupMembership.updateOne(
                { "group_membership.group_name": group_name },
                { $push: { "group_membership.$.group_members": member_name } },
            );
            console.log("update function");
            await UpdateGroupMembership.save();
        }
        ctx.response.status = 201;
        ctx.response.message = "A member added to group successfully";
    } catch (error) {
        ctx.body = {
            message: "Some validations failed for Group Member Creation",
            error: error.message,
        };
        console.log(error);
        ctx.throw(400, error);
    }
});

type test struct {
    Test string `json:"test"`
}

func test(w http.ResponseWriter, req *http.Request) {
    var t test_struct

    body, _ := ioutil.ReadAll(req.Body)
    json.Unmarshal(body, &t)

    fmt.Println(t)
}

Personally, I think the simplest approach to do an http post and get the response is to use the WebClient class. This class nicely abstracts the details. There's even a full code example in the MSDN documentation.

http://msdn.microsoft.com/en-us/library/system.net.webclient(VS.80).aspx

In your case, you want the UploadData() method. (Again, a code sample is included in the documentation)

http://msdn.microsoft.com/en-us/library/tdbbwh0a(VS.80).aspx

UploadString() will probably work as well, and it abstracts it away one more level.

http://msdn.microsoft.com/en-us/library/system.net.webclient.uploadstring(VS.80).aspx

That specifies the how many digits you want it to show.

integer value or * that specifies minimum field width. The result is padded with space characters (by default), if required, on the left when right-justified, or on the right if left-justified. In the case when * is used, the width is specified by an additional argument of type int. If the value of the argument is negative, it results with the - flag specified and positive field width.

Create a drawable checkbox selector:

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android" >
    <item android:drawable="@drawable/checkbox" 
          android:state_checked="false"/>
    <item android:drawable="@drawable/checkboxselected" 
          android:state_checked="true"/>
    <item android:drawable="@drawable/checkbox"/>    
</selector>

Make sure your checkbox is like this android:button="@drawable/checkbox_selector"

<CheckBox
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:button="@drawable/checkbox_selector"
    android:text="CheckBox"
    android:textAppearance="?android:attr/textAppearanceLarge"
    android:textColor="@color/Black" />

I created the following working example. The idea is to have a way to process a pool of tasks (I am using a queue as example) with many Threads (determined programmatically by the numberOfTasks/threshold), and wait until all Threads are completed to continue with some other processing.

import java.util.PriorityQueue;
import java.util.Queue;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

/** Testing CountDownLatch and ExecutorService to manage scenario where
 * multiple Threads work together to complete tasks from a single
 * resource provider, so the processing can be faster. */
public class ThreadCountDown {

private CountDownLatch threadsCountdown = null;
private static Queue<Integer> tasks = new PriorityQueue<>();

public static void main(String[] args) {
    // Create a queue with "Tasks"
    int numberOfTasks = 2000;
    while(numberOfTasks-- > 0) {
        tasks.add(numberOfTasks);
    }

    // Initiate Processing of Tasks
    ThreadCountDown main = new ThreadCountDown();
    main.process(tasks);
}

/* Receiving the Tasks to process, and creating multiple Threads
* to process in parallel. */
private void process(Queue<Integer> tasks) {
    int numberOfThreads = getNumberOfThreadsRequired(tasks.size());
    threadsCountdown = new CountDownLatch(numberOfThreads);
    ExecutorService threadExecutor = Executors.newFixedThreadPool(numberOfThreads);

    //Initialize each Thread
    while(numberOfThreads-- > 0) {
        System.out.println("Initializing Thread: "+numberOfThreads);
        threadExecutor.execute(new MyThread("Thread "+numberOfThreads));
    }

    try {
        //Shutdown the Executor, so it cannot receive more Threads.
        threadExecutor.shutdown();
        threadsCountdown.await();
        System.out.println("ALL THREADS COMPLETED!");
        //continue With Some Other Process Here
    } catch (InterruptedException ex) {
        ex.printStackTrace();
    }
}

/* Determine the number of Threads to create */
private int getNumberOfThreadsRequired(int size) {
    int threshold = 100;
    int threads = size / threshold;
    if( size > (threads*threshold) ){
        threads++;
    }
    return threads;
}

/* Task Provider. All Threads will get their task from here */
private synchronized static Integer getTask(){
    return tasks.poll();
}

/* The Threads will get Tasks and process them, while still available.
* When no more tasks available, the thread will complete and reduce the threadsCountdown */
private class MyThread implements Runnable {

    private String threadName;

    protected MyThread(String threadName) {
        super();
        this.threadName = threadName;
    }

    @Override
    public void run() {
        Integer task;
        try{
            //Check in the Task pool if anything pending to process
            while( (task = getTask()) != null ){
                processTask(task);
            }
        }catch (Exception ex){
            ex.printStackTrace();
        }finally {
            /*Reduce count when no more tasks to process. Eventually all
            Threads will end-up here, reducing the count to 0, allowing
            the flow to continue after threadsCountdown.await(); */
            threadsCountdown.countDown();
        }
    }

    private void processTask(Integer task){
        try{
            System.out.println(this.threadName+" is Working on Task: "+ task);
        }catch (Exception ex){
            ex.printStackTrace();
        }
    }
}
}

Hope it helps!

Natural Join: Natural join can be possible when there is at least one common attribute in two relations.

Theta Join: Theta join can be possible when two act on particular condition.

Equi Join: Equi can be possible when two act on equity condition. It is one type of theta join.

For me didn't work any from the above solutions and below it is what worked (I had already checked out Parallelize Build and added React)

1. Open XCode --> To Libraries add `$LibraryWhichDoesNotWork.xcodeproj$`
2. Then for your app in the `Build Phases` add to the `Link Binary with Libraries` the file `lib$LibraryWhichDoesNotWork$.a`

In PHP use .= to append strings, and not +=.

Why does this output 0? [...] Does PHP not like += with strings?

+= is an arithmetic operator to add a number to another number. Using that operator with strings leads to an automatic type conversion. In the OP's case the strings have been converted to integers of the value 0.

More about operators in PHP:

• Reference - What does this symbol mean in PHP?
• PHP Manual – Operators

First of all, you don't need to "clean up" strings and ints - they will be taken care of automatically by the garbage collector. The only thing that needs to be cleaned up in Dispose are unmanaged resources or managed recources that implement IDisposable.

However, assuming this is just a learning exercise, the recommended way to implement IDisposable is to add a "safety catch" to ensure that any resources aren't disposed of twice:

public void Dispose()
{
    Dispose(true);

    // Use SupressFinalize in case a subclass 
    // of this type implements a finalizer.
    GC.SuppressFinalize(this);   
}
protected virtual void Dispose(bool disposing)
{
    if (!_disposed)
    {
        if (disposing) 
        {
            // Clear all property values that maybe have been set
            // when the class was instantiated
            id = 0;
            name = String.Empty;
            pass = String.Empty;
        }

        // Indicate that the instance has been disposed.
        _disposed = true;   
    }
}

void ExplodeString( const std::string& string, const char separator, std::list<int>& result ) {
    if( string.size() ) {
        std::string::const_iterator last = string.begin();
        for( std::string::const_iterator i=string.begin(); i!=string.end(); ++i ) {
            if( *i == separator ) {
                const std::string str(last,i);
                int id = atoi(str.c_str());
                result.push_back(id);
                last = i;
                ++ last;
            }
        }
        if( last != string.end() ) result.push_back( atoi(&*last) );
    }
}

You can use an <input type="number" />. This will only allow numbers to be entered into othe input box.

Example: http://jsfiddle.net/SPqY3/

Please note that the input type="number" tag is only supported in newer browsers.

For firefox, you can validate the input by using javascript:

http://jsfiddle.net/VmtF5/

Update 2018-03-12: Browser support is much better now it's supported by the following:

• Chrome 6+
• Firefox 29+
• Opera 10.1+
• Safari 5+
• Edge
• (Internet Explorer 10+)

In the function context "this" its not referring to the select element, but to the page itself

• Change var ID = $(this).attr("id"); to var ID = $(obj).attr("id");

If obj is already a jQuery Object, just remove the $() around it.

The best way for iOS6 specifically is noted in "iOS6 By Tutorials" by the Ray Wenderlich team - http://www.raywenderlich.com/ and is better than subclassing UINavigationController for most cases.

I'm using iOS6 with a storyboard that includes a UINavigationController set as the initial view controller.

//AppDelegate.m - this method is not available pre-iOS6 unfortunately

- (NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window{
NSUInteger orientations = UIInterfaceOrientationMaskAllButUpsideDown;

if(self.window.rootViewController){
    UIViewController *presentedViewController = [[(UINavigationController *)self.window.rootViewController viewControllers] lastObject];
    orientations = [presentedViewController supportedInterfaceOrientations];
}

return orientations;
}

//MyViewController.m - return whatever orientations you want to support for each UIViewController

- (NSUInteger)supportedInterfaceOrientations{
    return UIInterfaceOrientationMaskPortrait;
}

Adding this piece of code after the val() seems to work:

$(":input#single").trigger('change');

You can add header "Content-Type: text/html; charset=UTF-8" to your message body.

$headers = "Content-Type: text/html; charset=UTF-8";

If you use native mail() function $headers array will be the 4th parameter mail($to, $subject, $message, $headers)

If you user PEAR Mail::factory() code will be:

$smtp = Mail::factory('smtp', $params);

$mail = $smtp->send($to, $headers, $body);

For the date part:(month is 0-indexed while days are 1-indexed)

var date = new Date('2014-8-20');
console.log((date.getMonth()+1) + '/' + date.getDate() + '/' +  date.getFullYear());

for the time you'll want to create a function to test different situations and convert.

You can find more debugging info just simply adding the option -loglevel debug, full command will be

ffmpeg -i INPUT OUTPUT -loglevel debug -v verbose

Better solution is to use NZ (null to zero) function during generating table => NZ([ColumnName]) It comes 0 where is "null" in ColumnName.

You want a geocoding application. These are available either online or as an application backend.

• Online applications:

  • Google has a geocoding API

• Backend applications:

  • GeoStan

There are many ways to do this. I did something below convenient to me and always works fine.

1. On your remote server, make sure to install xorg-x11-xauth, xorg-x11-font-utils, xorg-x11-fonts.
2. Run the Xming Server on you local desktop
3. On putty, before ssh to the server, enable the X11 forwarding and set the display location to localhost:0.0

4. On the server, .Xauthority file is generated and notice that the DISPLAY variable is already set.

   $ xauth list

   $ xauth add

To test it, type xclock or xeyes

Note: To switch user, copy the .Xauthority file to the home directory of the respective user and also export the DISPLAY variable from that user.

It says that the file C:\wamp\www\mysite\php\includes\dbconn.inc doesn't exist, so the error is, you're missing the file.

As you set application/x-www-form-urlencoded as content type so data sent must be like this format.

String urlParameters  = "param1=data1&param2=data2&param3=data3";

Sending part now is quite straightforward.

byte[] postData = urlParameters.getBytes( StandardCharsets.UTF_8 );
int postDataLength = postData.length;
String request = "<Url here>";
URL url = new URL( request );
HttpURLConnection conn= (HttpURLConnection) url.openConnection();           
conn.setDoOutput(true);
conn.setInstanceFollowRedirects(false);
conn.setRequestMethod("POST");
conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded"); 
conn.setRequestProperty("charset", "utf-8");
conn.setRequestProperty("Content-Length", Integer.toString(postDataLength ));
conn.setUseCaches(false);
try(DataOutputStream wr = new DataOutputStream(conn.getOutputStream())) {
   wr.write( postData );
}

Or you can create a generic method to build key value pattern which is required for application/x-www-form-urlencoded.

private String getDataString(HashMap<String, String> params) throws UnsupportedEncodingException{
    StringBuilder result = new StringBuilder();
    boolean first = true;
    for(Map.Entry<String, String> entry : params.entrySet()){
        if (first)
            first = false;
        else
            result.append("&");    
        result.append(URLEncoder.encode(entry.getKey(), "UTF-8"));
        result.append("=");
        result.append(URLEncoder.encode(entry.getValue(), "UTF-8"));
    }    
    return result.toString();
}

SSH doesn't use the : syntax when specifying a port. The easiest way to do this is to edit your ~/.ssh/config file and add:

Host git.host.de
  Port 4019

Then specify just git.host.de without a port number.

Just click on "Build" on the top menu and then click on "Publish ".... Then a pop up will open and there u can define the folder which u want to save the .exe file and by clicking "Next" will allow u to set up the advanced settings... DONE!

For the functional component, I would rather keep the props argument, so here is my solution:

interface Props {
  foo: string;
  bar?: number; 
}

// IMPORTANT!, defaultProps is of type {bar: number} rather than Partial<Props>!
const defaultProps = {
  bar: 1
}


// externalProps is of type Props
const FooComponent = exposedProps => {
  // props works like type Required<Props> now!
  const props = Object.assign(defaultProps, exposedProps);

  return ...
}

FooComponent.defaultProps = defaultProps;

One gotcha which caught me out:

[repos:/path/to/dir/] # this won't work

but

[repos:/path/to/dir]  # this is right

You need to not include a trailing slash on the directory, or you'll see 403 for the OPTIONS request.

EMAILCC=" -c [email protected],[email protected]"
TURNO_EMAIL="[email protected]"

mailx $EMAILCC -s "$(echo "Status: Control Aplicactivo \nContent-Type: text/html")" $TURNO_EMAIL < tmp.tmp

public static void main(String[] args) {        
    String s = "name=john age=13 year=2001";
    String t = s.replaceAll(" ", "");
    System.out.println("s: " + s + ", t: " + t);
}

Output:
s: name=john age=13 year=2001, t: name=johnage=13year=2001

If you really have to avoid operators then use Math.signum()

Returns the signum function of the argument; zero if the argument is zero, 1.0 if the argument is greater than zero, -1.0 if the argument is less than zero.

EDIT : As per the comments, this works for only double and float values. For integer values you can use the method:

Integer.signum(int i)

I was also using the official image (FROM postgres) and I was able to change the config by executing the following commands.

The first thing is to locate the PostgreSQL config file. This can be done by executing this command in your running database.

SHOW config_file;

I my case it returns /data/postgres/postgresql.conf.

The next step is to find out what is the hash of your running PostgreSQL docker container.

docker ps -a

This should return a list of all the running containers. In my case it looks like this.

...
0ba35e5427d9    postgres    "docker-entrypoint.s…" ....
...

Now you have to switch to the bash inside your container by executing:

docker exec -it 0ba35e5427d9 /bin/bash

Inside the container check if the config is at the correct path and display it.

cat /data/postgres/postgresql.conf

I wanted to change the max connections from 100 to 1000 and the shared buffer from 128MB to 3GB. With the sed command I can do a search and replace with the corresponding variables ins the config.

sed -i -e"s/^max_connections = 100.*$/max_connections = 1000/" /data/postgres/postgresql.conf
sed -i -e"s/^shared_buffers = 128MB.*$/shared_buffers = 3GB/" /data/postgres/postgresql.conf

The last thing we have to do is to restart the database within the container. Find out which version you of PostGres you are using.

cd /usr/lib/postgresql/
ls 

In my case its 12 So you can now restart the database by executing the following command with the correct version in place.

su - postgres -c "PGDATA=$PGDATA /usr/lib/postgresql/12/bin/pg_ctl -w restart"

Try using ReadAsStringAsync() instead.

 var foo = resp.Content.ReadAsStringAsync().Result;

The reason why it ReadAsAsync<string>() doesn't work is because ReadAsAsync<> will try to use one of the default MediaTypeFormatter (i.e. JsonMediaTypeFormatter, XmlMediaTypeFormatter, ...) to read the content with content-type of text/plain. However, none of the default formatter can read the text/plain (they can only read application/json, application/xml, etc).

By using ReadAsStringAsync(), the content will be read as string regardless of the content-type.

you can returns a private collection named HttpValueCollection even the documentation says it's a NameValueCollection using the ParseQueryString utility. Then add the keys manually, HttpValueCollection do the encoding for you. And then just append the QueryString manually :

var qs = HttpUtility.ParseQueryString(""); 
qs.Add("name", "John")
qs.Add("contact", "calgary");
qs.Add("contact", "vancouver")

<a href="<%: Url.Action("GetByList", "Listing")%>?<%:qs%>">
    <span>People</span>
</a>

Better Approach:

<script type="text/javascript">
    $('#btn').click(function() {
      var id = $(this).attr('id');
      alert(id);
    });
</script>

<input id="btn" type="button" value="click" />

But, if you REALLY need to do the click handler inline, this will work:

<script type="text/javascript">
    function display(el) {
        var id = $(el).attr('id');
        alert(id);
    }
</script>

<input id="btn" type="button" value="click" OnClick="display(this);" />

CSS:

#sidebar {float: right; width: 200px; background: #eee;}
#content {overflow: hidden; background: #dad;}

HTML:

<div id="sidebar">I'm 200px wide</div>
<div id="content"> I take up the remaining space <br> and I don't wrap under the right column</div>

The above should work, you can put that code in wrapper if you want the give it width and center it too, overflow:hidden on the column without a width is the key to getting it to contain, vertically, as in not wrap around the side columns (can be left or right)

IE6 might need zoom:1 set on the #content div too if you need it's support

change the focused border to none

TextField(
      decoration: new InputDecoration(
          border: InputBorder.none,
          focusedBorder: InputBorder.none,
          contentPadding: EdgeInsets.only(left: 15, bottom: 11, top: 11, right: 15),
          hintText: 'Subject'
      ),
    ),

Serialization systems other than the native java one can also use this modifier. Hibernate, for instance, will not persist fields marked with either @Transient or the transient modifier. Terracotta as well respects this modifier.

I believe the figurative meaning of the modifier is "this field is for in-memory use only. don't persist or move it outside of this particular VM in any way. Its non-portable". i.e. you can't rely on its value in another VM memory space. Much like volatile means you can't rely on certain memory and thread semantics.

radiobuttonObj.isChecked() will give you boolean

if(radiobuttonObj1.isChecked()){
//do what you want 
}else if(radiobuttonObj2.isChecked()){
//do what you want 
}

Normaly you can GET and POST parameters in a servlet the same way:

request.getParameter("cmd");

But only if the POST data is encoded as key-value pairs of content type: "application/x-www-form-urlencoded" like when you use a standard HTML form.

If you use a different encoding schema for your post data, as in your case when you post a json data stream, you need to use a custom decoder that can process the raw datastream from:

BufferedReader reader = request.getReader();

Json post processing example (uses org.json package )

public void doPost(HttpServletRequest request, HttpServletResponse response)
  throws ServletException, IOException {

  StringBuffer jb = new StringBuffer();
  String line = null;
  try {
    BufferedReader reader = request.getReader();
    while ((line = reader.readLine()) != null)
      jb.append(line);
  } catch (Exception e) { /*report an error*/ }

  try {
    JSONObject jsonObject =  HTTP.toJSONObject(jb.toString());
  } catch (JSONException e) {
    // crash and burn
    throw new IOException("Error parsing JSON request string");
  }

  // Work with the data using methods like...
  // int someInt = jsonObject.getInt("intParamName");
  // String someString = jsonObject.getString("stringParamName");
  // JSONObject nestedObj = jsonObject.getJSONObject("nestedObjName");
  // JSONArray arr = jsonObject.getJSONArray("arrayParamName");
  // etc...
}

According with this line: https://github.com/pingyuanChen/webpack-uglify-js-plugin/blob/master/index.js#L117

should be something like:

var webpack = require("webpack");

module.exports = {

  entry: "./entry.js",
  devtool: "source-map",
  output: {
    path: "./dist",
    filename: "bundle.js"
  },
  plugins: [
    new webpack.optimize.UglifyJsPlugin({
     minimize: true,
     compress: false
    })
  ]
};

Indeed you can have multiple builds by exporting different configs according your env / argv strategies.

Extending your requirements a bit and assuming you do not care about the order of lines and want to get them grouped under categories, the following solution may work for you:

>>> fname = "lines.txt"
>>> from collections import defaultdict
>>> dct = defaultdict(list)
>>> with open(fname) as f:
...     for line in f:
...         text, cat = line.rstrip("\n").split(",", 1)
...         dct[cat].append(text)
...
>>> dct
defaultdict(<type 'list'>, {' CatA': ['This is the first line', 'This is the another line'], ' CatC': ['This is the third line'], ' CatB': ['This is the second line', 'This is the last line']})

This way you get all relevant lines available in the dictionary under key being the category.

I have same problem in android os version 4.1.2

add below line to your AndroidManifest.xml below android:label="@string/app_name" in application tag

android:name="android.support.multidex.MultiDexApplication"

This may help some one with same problem.

I used jsPDF and html-to-image.

You can check out the code on the below git repo.

Link

If you like, you can drop a star there??

You can use boost::math::sign() method from boost/math/special_functions/sign.hpp if boost is available.

Uncommenting set bell-style none in /etc/inputrc and creating a .bash_profile with setterm -blength 0 didn't stop vim from beeping.

What worked for me was creating a .vimrc file in my home directory with set visualbell.

Source: https://linuxconfig.org/turn-off-beep-bell-on-linux-terminal

I have faced issue like my main page index.jsp contains the below line but eventhough rendering was not proper in IE. Found the issue and I have added the code in all the files which I included in index.jsp. Hurray! it worked.

So You need to add below code in all the files which you include into the page otherwise it wont work.

    <!doctype html>
    <head>
      <meta http-equiv="X-UA-Compatible" content="IE=Edge">
    </head>

Actually, none of these answers reflect current state of the art with Git (v2.29 by time of writing this answer). In the latest versions of Git, cache, winstore, wincred are deprecated.

If you want to clone a Bitbucket repository via HTTPS, e.g.

git clone https://[email protected]/SomeOrganization/SomeRepo.git

You have to:

1. Generate app password at Bitbucket user administration.
2. Setup your credential method in .gitconfig accordingly (global or local)

[credential]
    helper = manager

You can locate your .gitconfig by executing this command.

git config --list --show-origin

3. Execute

git clone https://[email protected]/SomeOrganization/SomeRepo.git

and wait until log on window appears. Use your user name from the url (kutlime in my case) and your generated app password as a password.

I'm pretty mixed up on this. I am also running Excel 2010. I tried saving two sheets as a single PDF using:

    ThisWorkbook.Sheets(Array(1,2)).Select
    **Selection**.ExportAsFixedFormat xlTypePDF, FileName & ".pdf", , , False

but I got nothing but blank pages. It saved both sheets, but nothing on them. It wasn't until I used:

    ThisWorkbook.Sheets(Array(1,2)).Select
    **ActiveSheet**.ExportAsFixedFormat xlTypePDF, FileName & ".pdf", , , False

that I got a single PDF file with both sheets.

I tried manually saving these two pages using Selection in the Options dialog to save the two sheets I had selected, but got blank pages. When I tried the Active Sheet(s) option, I got what I wanted. When I recorded this as a macro, Excel used ActiveSheet when it successfully published the PDF. What gives?

Dont know whether I should put this as answer or not...

I used @Zeeshan0026's solution to draw the path...and the problem was that if I draw path once, and then I do try to draw path once again, both two paths show and this continues...paths showing even when markers were deleted... while, ideally, old paths' shouldn't be there once new path is drawn / markers are deleted..

going through some other question over SO, I had the following solution

I add the following function in Zeeshan's class

 public void clearRoute(){

         for(Polyline line1 : polylines)
         {
             line1.remove();
         }

         polylines.clear();

     }

in my map activity, before drawing the path, I called this function.. example usage as per my app is

private Route rt;

rt.clearRoute();

            if (src == null) {
                Toast.makeText(getApplicationContext(), "Please select your Source", Toast.LENGTH_LONG).show();
            }else if (Destination == null) {
                Toast.makeText(getApplicationContext(), "Please select your Destination", Toast.LENGTH_LONG).show();
            }else if (src.equals(Destination)) {
                Toast.makeText(getApplicationContext(), "Source and Destinatin can not be the same..", Toast.LENGTH_LONG).show();
            }else{

                rt.drawRoute(mMap, MapsMainActivity.this, src,
                        Destination, false, "en");
            }

you can use rt.clearRoute(); as per your requirements.. Hoping that it will save a few minutes of someone else and will help some beginner in solving this issue..

Complete Class Code

see on github

Edit: here is part of code from mainactivity..

case R.id.mkrbtn_set_dest:
                    Destination = selmarker.getPosition();
                    destmarker = selmarker;
                    desShape = createRouteCircle(Destination, false);

                    if (src == null) {
                        Toast.makeText(getApplicationContext(),
                                "Please select your Source first...",
                                Toast.LENGTH_LONG).show();
                    } else if (src.equals(Destination)) {
                        Toast.makeText(getApplicationContext(),
                                "Source and Destinatin can not be the same..",
                                Toast.LENGTH_LONG).show();
                    } else {

                        if (isNetworkAvailable()) {
                            rt.drawRoute(mMap, MapsMainActivity.this, src,
                                    Destination, false, "en");
                            src = null;
                            Destination = null;

                        } else {
                            Toast.makeText(
                                    getApplicationContext(),
                                    "Internet Connection seems to be OFFLINE...!",
                                    Toast.LENGTH_LONG).show();

                        }

                    }

                    break;

Edit 2 as per comments

usage :

//variables as data members
GoogleMap mMap;
private Route rt;
static LatLng src;
static LatLng Destination;
//MapsMainActivity is my activity
//false for interim stops for traffic, google
// en language for html description returned

rt.drawRoute(mMap, MapsMainActivity.this, src,
                            Destination, false, "en");

The format you need is:

'2007-01-01 10:00:00'

i.e. yyyy-MM-dd HH:mm:ss

If possible, however, use a parameterised query as this frees you from worrying about the formatting details.

Since this question was closed, I'm posting here for how you do it using SQLAlchemy. Via recursion, it retries a bulk insert or update to combat race conditions and validation errors.

First the imports

import itertools as it

from functools import partial
from operator import itemgetter

from sqlalchemy.exc import IntegrityError
from app import session
from models import Posts

Now a couple helper functions

def chunk(content, chunksize=None):
    """Groups data into chunks each with (at most) `chunksize` items.
    https://stackoverflow.com/a/22919323/408556
    """
    if chunksize:
        i = iter(content)
        generator = (list(it.islice(i, chunksize)) for _ in it.count())
    else:
        generator = iter([content])

    return it.takewhile(bool, generator)


def gen_resources(records):
    """Yields a dictionary if the record's id already exists, a row object 
    otherwise.
    """
    ids = {item[0] for item in session.query(Posts.id)}

    for record in records:
        is_row = hasattr(record, 'to_dict')

        if is_row and record.id in ids:
            # It's a row but the id already exists, so we need to convert it 
            # to a dict that updates the existing record. Since it is duplicate,
            # also yield True
            yield record.to_dict(), True
        elif is_row:
            # It's a row and the id doesn't exist, so no conversion needed. 
            # Since it's not a duplicate, also yield False
            yield record, False
        elif record['id'] in ids:
            # It's a dict and the id already exists, so no conversion needed. 
            # Since it is duplicate, also yield True
            yield record, True
        else:
            # It's a dict and the id doesn't exist, so we need to convert it. 
            # Since it's not a duplicate, also yield False
            yield Posts(**record), False

And finally the upsert function

def upsert(data, chunksize=None):
    for records in chunk(data, chunksize):
        resources = gen_resources(records)
        sorted_resources = sorted(resources, key=itemgetter(1))

        for dupe, group in it.groupby(sorted_resources, itemgetter(1)):
            items = [g[0] for g in group]

            if dupe:
                _upsert = partial(session.bulk_update_mappings, Posts)
            else:
                _upsert = session.add_all

            try:
                _upsert(items)
                session.commit()
            except IntegrityError:
                # A record was added or deleted after we checked, so retry
                # 
                # modify accordingly by adding additional exceptions, e.g.,
                # except (IntegrityError, ValidationError, ValueError)
                db.session.rollback()
                upsert(items)
            except Exception as e:
                # Some other error occurred so reduce chunksize to isolate the 
                # offending row(s)
                db.session.rollback()
                num_items = len(items)

                if num_items > 1:
                    upsert(items, num_items // 2)
                else:
                    print('Error adding record {}'.format(items[0]))

Here's how you use it

>>> data = [
...     {'id': 1, 'text': 'updated post1'}, 
...     {'id': 5, 'text': 'updated post5'}, 
...     {'id': 1000, 'text': 'new post1000'}]
... 
>>> upsert(data)

The advantage this has over bulk_save_objects is that it can handle relationships, error checking, etc on insert (unlike bulk operations).

I deleted the file with main() function in my project when I wanted to change project type to static library.

I Forgot to change Properties -> General -> Configuration Type

from

Application(.exe)

to

Static Library (.lib)

This too gave me the same error.

Don't forget that the status bar's frame will be in the screen's coordinate space! If you launch in landscape mode, you may find that width and height are swapped. I strongly recommend that you use this version of the code instead if you support landscape orientations:

CGRect statusBarFrame = [self.window convertRect:[UIApplication sharedApplication].statusBarFrame toView:view];

You can then read statusBarFrame's height property directly. 'View' in this instance should be the view in which you wish to make use of the measurements, most likely the application window's root view controller.

Incidentally, not only may the status bar be taller during phone calls, it can also be zero if the status bar has been deliberately hidden.

string val = "123-12-1234";

val = val.Replace("-", ""); // result: 123121234

Try this:

MessageBox.Show("Some text", "Some title", 
    MessageBoxButtons.OK, MessageBoxIcon.Error);

If you wanted to pre-process your DOCX files, rather than waiting until runtime you could convert them into HTML first by using a file conversion API such as Zamzar. You could use the API to programatically convert from DOCX to HMTL, save the output to your server and then serve that HTML up to your end users.

Conversion is pretty easy:

curl https://api.zamzar.com/v1/jobs \
-u API_KEY: \
-X POST \
-F "[email protected]" \
-F "target_format=html5"

This would remove any runtime dependencies on Google & Microsoft's services (for example if they were down, or you were rate limited by them).

It also has the benefit that you could extend to other filetypes if you wanted (PPTX, XLS, DOC etc)

Be aware that it only updates the first company it found with company id 1. For multiple

 (from c in listOfCompany where c.id == 1 select c).First().Name = "Whatever Name";

For Multiple updates

 from c in listOfCompany where c.id == 1 select c => {c.Name = "Whatever Name";  return c;}

Tip: generate error.

declare @Day int, @Config_Node varchar(50)

    set @Config_Node = 'value to trace'

    set @Day = @Config_Node

You will get this message:

Conversion failed when converting the varchar value 'value to trace' to data type int.

((1,2,3,4),
 (5,6,7,8),
 (9,0,1,2))

Using tuples instead of lists makes it marginally harder to change the data structure in unwanted ways.

If you are going to do extensive use of those, you are best off wrapping a true number array in a class, so you can define methods and properties on them. (Or, you could NumPy, SciPy, ... if you are going to do your processing with those libraries.)

Step 1. On your desktop right click "New"->"Text Document" with name OpenGitBash.reg

Step 2. Right click the file and choose "Edit"

Step 3. Copy-paste the code below, save and close the file

Step 4. Execute the file by double clicking it

Note: You need administrator permission to write to the registry.

Windows Registry Editor Version 5.00
; Open files
; Default Git-Bash Location C:\Program Files\Git\git-bash.exe

[HKEY_CLASSES_ROOT\*\shell\Open Git Bash]
@="Open Git Bash"
"Icon"="C:\\Program Files\\Git\\git-bash.exe"

[HKEY_CLASSES_ROOT\*\shell\Open Git Bash\command]
@="\"C:\\Program Files\\Git\\git-bash.exe\" \"--cd=%1\""

; This will make it appear when you right click ON a folder
; The "Icon" line can be removed if you don't want the icon to appear

[HKEY_CLASSES_ROOT\Directory\shell\bash]
@="Open Git Bash"
"Icon"="C:\\Program Files\\Git\\git-bash.exe"


[HKEY_CLASSES_ROOT\Directory\shell\bash\command]
@="\"C:\\Program Files\\Git\\git-bash.exe\" \"--cd=%1\""

; This will make it appear when you right click INSIDE a folder
; The "Icon" line can be removed if you don't want the icon to appear

[HKEY_CLASSES_ROOT\Directory\Background\shell\bash]
@="Open Git Bash"
"Icon"="C:\\Program Files\\Git\\git-bash.exe"

[HKEY_CLASSES_ROOT\Directory\Background\shell\bash\command]
@="\"C:\\Program Files\\Git\\git-bash.exe\" \"--cd=%v.\""

And here is your result :

This is a hibernate.cfg.xml for posgresql and it will help you with basic hibernate configurations for posgresql.

<!DOCTYPE hibernate-configuration PUBLIC
        "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
        "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">

<hibernate-configuration>
    <session-factory>
        <property name="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</property>
        <property name="hibernate.connection.driver_class">org.postgresql.Driver</property>
        <property name="hibernate.connection.username">postgres</property>
        <property name="hibernate.connection.password">password</property>
        <property name="hibernate.connection.url">jdbc:postgresql://localhost:5432/hibernatedb</property>



        <property name="connection_pool_size">1</property>

        <property name="hbm2ddl.auto">create</property>

        <property name="show_sql">true</property>



       <mapping class="org.javabrains.sanjaya.dto.UserDetails"/>

    </session-factory>
</hibernate-configuration>

Locate where your keytool.exe inside java installation folder

mine is C:\Program Files\Java\jre1.8.0_181\bin open cmd anywhere and run

SET PATH=%PATH%;C:\Program Files\Java\jre1.8.0_181\bin;

change the path to the path you located your keytool.exe

You can use the -l option in the she-bang header:

#!/usr/bin/perl -l

$text = "hello";

print $text;
print $text;

Output:

hello
hello

I do so

 <input id="relacionac" name="relacionac" type="number" min="0.4" max="0.7" placeholder="0,40-0,70" class="form-control input-md" step="0.01">

then, I define min in 0.4 and max in 0.7 with step 0.01: 0.4, 0.41, 0,42 ... 0.7

A good idea could be to encapsulate everything inside groups, no matter if need to identify them or not. That way you can use them in your replacement string. For example:

var pattern = @"(-)(\d+)(-)";
var replaced = Regex.Replace(text, pattern, "$1AA$3"); 

or using a MatchEvaluator:

var replaced = Regex.Replace(text, pattern, m => m.Groups[1].Value + "AA" + m.Groups[3].Value);

Another way, slightly messy, could be using a lookbehind/lookahead:

(?<=-)(\d+)(?=-)

It is an extremely overused way to check for the success/failure of a command. Typically, the code snippet you give would be refactored as:

if grep -e ERROR ${LOG_DIR_PATH}/${LOG_NAME} > /dev/null; then
   ...
fi

(Although you can use 'grep -q' in some instances instead of redirecting to /dev/null, doing so is not portable. Many implementations of grep do not support the -q option, so your script may fail if you use it.)

Like this:

if(borrar())
{
   // Do something
}

If borrar() returns true then do something (if it is not false).

What worked for me was:

Resources.getSystem().getConfiguration().locale;

Resources.getSystem() returns a global shared Resources object that provides access to only system resources (no application resources), and is not configured for the current screen (can not use dimension units, does not change based on orientation, etc).

Because getConfiguration.locale has now been deprecated, the preferred way to get the primary locale in Android Nougat is:

Resources.getSystem().getConfiguration().getLocales().get(0);

To guarantee compatibility with the previous Android versions a possible solution would be a simple check:

Locale locale;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
    locale = Resources.getSystem().getConfiguration().getLocales().get(0);
} else {
    //noinspection deprecation
    locale = Resources.getSystem().getConfiguration().locale;
}

Update

Starting with support library 26.1.0 you don't need to check the Android version as it offers a convenient method backward compatible getLocales().

Simply call:

ConfigurationCompat.getLocales(Resources.getSystem().getConfiguration());

For me, I had changes already in place and I wanted the latest from the base branch. I was unable to do rebase, and cherry-pick would have taken forever, so I did the following:

git fetch origin <base branch name>  
git merge FETCH_HEAD

so in this case:

git fetch origin master  
git merge FETCH_HEAD

Both your way and @Steve's way are acceptable ways to prevent accidental exits.

If choosing to continue with your implementation, you will need to make sure to have backpress initialized to 0, and probably implement a Timer of some sort to reset it back to 0 on keypress, after a cooldown period. (~5 seconds seems right)

This is very simple, just make use of this example

import sys
with open("test.txt", 'w') as sys.stdout:
    print("hello")

The lookup module of ansible works fine for me. The yml is:

- hosts: test
  vars:
    time: "{{ lookup('pipe', 'date -d \"1 day ago\" +\"%Y%m%d\"') }}"

You can replace any command with date to get result of the command.

Using tidyverse:

x <- rnorm(100)
eps <- rnorm(100,0,.2)
df <- data.frame(x, eps) %>% 
  mutate(p1 = 3*x+eps, p2 = 2*x+eps) %>% 
  tidyr::gather("plot", "value", 3:4) %>% 
  ggplot(aes(x = x , y = value)) + 
    geom_point() + 
    geom_smooth() + 
    facet_wrap(~plot, ncol =2)

df

My lightweight implementation of ParallelForEach async.

Features:

1. Throttling (max degree of parallelism).
2. Exception handling (aggregation exception will be thrown at completion).
3. Memory efficient (no need to store the list of tasks).

public static class AsyncEx
{
    public static async Task ParallelForEachAsync<T>(this IEnumerable<T> source, Func<T, Task> asyncAction, int maxDegreeOfParallelism = 10)
    {
        var semaphoreSlim = new SemaphoreSlim(maxDegreeOfParallelism);
        var tcs = new TaskCompletionSource<object>();
        var exceptions = new ConcurrentBag<Exception>();
        bool addingCompleted = false;

        foreach (T item in source)
        {
            await semaphoreSlim.WaitAsync();
            asyncAction(item).ContinueWith(t =>
            {
                semaphoreSlim.Release();

                if (t.Exception != null)
                {
                    exceptions.Add(t.Exception);
                }

                if (Volatile.Read(ref addingCompleted) && semaphoreSlim.CurrentCount == maxDegreeOfParallelism)
                {
                    tcs.TrySetResult(null);
                }
            });
        }

        Volatile.Write(ref addingCompleted, true);
        await tcs.Task;
        if (exceptions.Count > 0)
        {
            throw new AggregateException(exceptions);
        }
    }
}

Usage example:

await Enumerable.Range(1, 10000).ParallelForEachAsync(async (i) =>
{
    var data = await GetData(i);
}, maxDegreeOfParallelism: 100);

To also highlight the menu item when one of the child pages is active, also check for the other class (current-page-ancestor) like below:

add_filter('nav_menu_css_class' , 'special_nav_class' , 10 , 2);

function special_nav_class ($classes, $item) {
    if (in_array('current-page-ancestor', $classes) || in_array('current-menu-item', $classes) ){
        $classes[] = 'active ';
    }
    return $classes;
}

You have a JSON Lines format text file. You need to parse your file line by line:

import json

data = []
with open('file') as f:
    for line in f:
        data.append(json.loads(line))

Each line contains valid JSON, but as a whole, it is not a valid JSON value as there is no top-level list or object definition.

Note that because the file contains JSON per line, you are saved the headaches of trying to parse it all in one go or to figure out a streaming JSON parser. You can now opt to process each line separately before moving on to the next, saving memory in the process. You probably don't want to append each result to one list and then process everything if your file is really big.

If you have a file containing individual JSON objects with delimiters in-between, use How do I use the 'json' module to read in one JSON object at a time? to parse out individual objects using a buffered method.

The easiest way would probably be to put your web resources into the assets folder then call:

webView.loadUrl("file:///android_asset/filename.html");

For Complete Communication between Java and Webview See This

Update: The assets folder is usually the following folder: <project>/src/main/assets This can be changed in the asset folder configuration setting in your <app>.iml file as:

<option name=”ASSETS_FOLDER_RELATIVE_PATH” value=”/src/main/assets” /> See Article Where to place the assets folder in Android Studio

Use count(d.ertek) or count(d.id) instead of count(d). This can be happen when you have composite primary key at your entity.

From the javascript I tried from several ways and I could not.

You need an server side solution, for example on c# I did create an controller that call to the http, en deserialize the object, and the result is that when I call from javascript, I'm doing an request from my https://domain to my htpps://domain. Please see my c# code:

[Authorize]
public class CurrencyServicesController : Controller
{
    HttpClient client;
    //GET: CurrencyServices/Consultar?url=valores?moedas=USD&alt=json
    public async Task<dynamic> Consultar(string url)
    {
        client = new HttpClient();
        client.BaseAddress = new Uri("http://api.promasters.net.br/cotacao/v1/");
        client.DefaultRequestHeaders.Accept.Add(new System.Net.Http.Headers.MediaTypeWithQualityHeaderValue("application/json"));
        System.Net.Http.HttpResponseMessage response = client.GetAsync(url).Result;

        var FromURL = response.Content.ReadAsStringAsync().Result;

        return JsonConvert.DeserializeObject(FromURL);
    }

And let me show to you my client side (Javascript)

<script async>
$(document).ready(function (data) {

    var TheUrl = '@Url.Action("Consultar", "CurrencyServices")?url=valores';
    $.getJSON(TheUrl)
        .done(function (data) {
            $('#DolarQuotation').html(
                '$ ' + data.valores.USD.valor.toFixed(2) + ','
            );
            $('#EuroQuotation').html(
                '€ ' + data.valores.EUR.valor.toFixed(2) + ','
            );

            $('#ARGPesoQuotation').html(
                'Ar$ ' + data.valores.ARS.valor.toFixed(2) + ''
            );

        });       

});

I wish that this help you! Greetings

See String.replaceAll.

Use the regex "\s" and replace with " ".

Then use String.trim.

$('tbody').find('tr:visible').hightlight(myArray[i]);

This happened to me on Ubuntu 18.04.2 after I tried to install Python3.7 from the deadsnakes repo.

Solution was this

1) cd /usr/lib/python3/dist-packages/

2) sudo ln -s apt_pkg.cpython-36m-x86_64-linux-gnu.so apt_pkg.so

Why not do it with one method call:

File.AppendAllLines("file.txt", new[] { DateTime.Now.ToString() });

which will do the newline for you, and allow you to insert multiple lines at once if you want.

You could use Vi/Vim's Visual Block mode which is designed for stuff like this:

Ctrl-V  
Highlight first element in rows you want commented  
Shift-i  
#  
esc  

Uncomment would be:

Ctrl-V  
Highlight #'s  
d  
l  

This is vi's interactive way of doing this sort of thing rather than counting or reading line numbers.

Lastly, in Gvim you use ctrl-q to get into Visual Block mode rather than ctrl-v (because that's the shortcut for paste).

var item = "one,two,three";
var lastItem = item.split(",").pop();
console.log(lastItem); // three

Seems like the accepted answer does not work anymore. I found the correct method from another post: https://stackoverflow.com/a/46811403/6368026

Now you should use:

http://www.youtube.com/embed/videoseries?list=USERID And the USERID is your youtube user id with 'UU' appended.

For example, if your user id is TlQ5niAIDsLdEHpQKQsupg then you should put UUTlQ5niAIDsLdEHpQKQsupg. If you only have the channel id (which you can find in your channel URL) then just replace the first two characters (UC) with UU.

So in the end you would have an URL like this:

http://www.youtube.com/embed/videoseries?list=UUTlQ5niAIDsLdEHpQKQsupg

Another possible solution I came up with was:

re.sub(r'([uU]+(.)?\s)',' you ', text)

After researching KeithB's solution using std::istream_iterator, I discovered the std:istreambuf_iterator.

Test program to read all piped input into a string, then write it out again:

#include <iostream>
#include <iterator>
#include <string>

int main()
{
  std::istreambuf_iterator<char> begin(std::cin), end;
  std::string s(begin, end);
  std::cout << s;
}

Timezones and stuff aside, a very simple alternative to new Date(startDateLong) could be LocalDate.ofEpochDay(startDateLong / 86400000L)

Try this:

window.location.href = "http://www.gorissen.info/Pierre/maps/googleMapLocation.php?lat=\''+elemA+'\'&lon=\''+elemB+'\'&setLatLon=Set";

basename and dirname solutions are more convenient. Those are alternative commands:

FILE_PATH="/opt/datastores/sda2/test.old.img"
echo "$FILE_PATH" | sed "s/.*\///"

This returns test.old.img like basename.

This is salt filename without extension:

echo "$FILE_PATH" | sed -r "s/.+\/(.+)\..+/\1/"

It returns test.old.

And following statement gives the full path like dirname command.

echo "$FILE_PATH" | sed -r "s/(.+)\/.+/\1/"

It returns /opt/datastores/sda2

There are two options. The first (and better) one is using the Fetch as Google option in Webmaster Tools that Mike Flynn commented about. Here are detailed instructions:

1. Go to: https://www.google.com/webmasters/tools/ and log in
2. If you haven't already, add and verify the site with the "Add a Site" button
3. Click on the site name for the one you want to manage
4. Click Crawl -> Fetch as Google
5. Optional: if you want to do a specific page only, type in the URL
6. Click Fetch
7. Click Submit to Index
8. Select either "URL" or "URL and its direct links"
9. Click OK and you're done.

With the option above, as long as every page can be reached from some link on the initial page or a page that it links to, Google should recrawl the whole thing. If you want to explicitly tell it a list of pages to crawl on the domain, you can follow the directions to submit a sitemap.

Your second (and generally slower) option is, as seanbreeden pointed out, submitting here: http://www.google.com/addurl/

Update 2019:

1. Login to - Google Search Console
2. Add a site and verify it with the available methods.
3. After verification from the console, click on URL Inspection.
4. In the Search bar on top, enter your website URL or custom URLs for inspection and enter.
5. After Inspection, it'll show an option to Request Indexing
6. Click on it and GoogleBot will add your website in a Queue for crawling.

You can use the expandable list view explained in API demos to show groups

http://developer.android.com/resources/samples/ApiDemos/src/com/example/android/apis/view/ExpandableList1.html.

To animate the list items motion, you will have to override the getView method and apply translate animation on each list item. The values for animation depend on the position of each list item. This was something which i tried on a simple list view long time back.

This is a bit off, but if you have an event that triggers switch, you can do without classes:

<div id="classOne1"></div>
<div id="classOne2"></div>
<div id="classTwo3"></div>

You can do

$('body').click( function() {

    switch ( this.id.replace(/[0-9]/g, '') ) {
        case 'classOne': this.innerHTML = "I have classOne"; break;
        case 'classTwo': this.innerHTML = "I have classTwo"; break;
        default: this.innerHTML = "";
    }

});

.replace(/[0-9]/g, '') removes digits from id.

It is a bit hacky, but works for long switches without extra functions or loops

In templates, you can separate filter arguments by colons.

{{ yourExpression | yourFilter: arg1:arg2:... }}

From Javascript, you call it as

$filter('yourFilter')(yourExpression, arg1, arg2, ...)

There is actually an example hidden in the orderBy filter docs.

Example:

Let's say you make a filter that can replace things with regular expressions:

myApp.filter("regexReplace", function() { // register new filter

  return function(input, searchRegex, replaceRegex) { // filter arguments

    return input.replace(RegExp(searchRegex), replaceRegex); // implementation

  };
});

Invocation in a template to censor out all digits:

<p>{{ myText | regexReplace: '[0-9]':'X' }}</p>

You have to add repositories to your build file. For maven repositories you have to prefix repository name with maven{}

repositories {
  maven { url "http://maven.springframework.org/release" }
  maven { url "http://maven.restlet.org" }
  mavenCentral()
}

The limit of requests in .Net can be configured from two properties together:

First

• Web.Config/system.web/httpRuntime/maxRequestLength
• Unit of measurement: kilobytes
• Default value 4096 KB (4 MB)
• Max. value 2147483647 KB (2 TB)

Second

• Web.Config/system.webServer/security/requestFiltering/requestLimits/maxAllowedContentLength (in bytes)
• Unit of measurement: bytes
• Default value 30000000 bytes (28.6 MB)
• Max. value 4294967295 bytes (4 GB)

References:

• http://www.whatsabyte.com/P1/byteconverter.htm
• https://www.iis.net/configreference/system.webserver/security/requestfiltering/requestlimits

Example:

<location path="upl">
   <system.web>
     <!--The default size is 4096 kilobytes (4 MB). MaxValue is 2147483647 KB (2 TB)-->
     <!-- 100 MB in kilobytes -->
     <httpRuntime maxRequestLength="102400" />
   </system.web>
   <system.webServer>
     <security>
       <requestFiltering>          
         <!--The default size is 30000000 bytes (28.6 MB). MaxValue is 4294967295 bytes (4 GB)-->
         <!-- 100 MB in bytes -->
         <requestLimits maxAllowedContentLength="104857600" />
       </requestFiltering>
     </security>
   </system.webServer>
 </location>

Your client application and server application must be under same domain, for example :

client - localhost

server - localhost

and not :

client - localhost:21234

server - localhost

window.navigate is NOT supported in some browsers, so that one should be avoided. Any of the other methods using the location property are the most reliable and consistent approach

As I found the default Bootstrap <hr/> size unsightly, here's some simple HTML and CSS to balance out the element visually:

HTML:

<hr class="half-rule"/>

CSS:

.half-rule { 
    margin-left: 0;
    text-align: left;
    width: 50%;
 }

This was my experience resolving this issue. I'm using XAMPP. I was getting the error below

 Fatal error: Can't open and lock privilege tables: Table '.\mysql\db' is marked as crashed and last (automatic?) repair failed  

This is what I did to resolve it, step by step:

1. went to location C:\xampp\mysql, For you, location may be different, make sure you are in right file location.
2. created backup of the data folder as data-old.
3. copied folder "mysql" from C:\xampp\mysql\backup
4. pasted it inside C:\xampp\mysql\data\ replacing the old mysql folder.

And it worked. Keep in mind, I have already tried around 10 solutions and they didnt work for me. This solutions may or may not work for you but regardless, make backup of your data folder before you do anything.

Note: I would always opt to resolve this with repair command but in my case, i wasnt able to get mysql started at all and i wasnt able to get myisamchk command to work.

Regardless of what you do, create a periodic backup of your database.

Check possible reasons here: http://msdn.microsoft.com/en-us/library/z6c2z492(v=VS.100).aspx

EDIT:

You need to put the protocol prefix in front the address, i.e. in your case "ftp://"

add android.applicationVariants.all block like below in you app level gradle

buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
            lintOptions {
                disable 'MissingTranslation'
            }
            signingConfig signingConfigs.release
            android.applicationVariants.all { variant ->
                variant.outputs.all {
                    outputFileName = "${applicationId}_${versionCode}_${variant.flavorName}_${variant.buildType.name}.apk"
                }
            }
        }
        debug {
            applicationIdSuffix '.debug'
            versionNameSuffix '_debug'
        }
    }

available at 2019/03/25

I have faced this problem during development of a E-Commerce site using NopCommerce, I got this solution by 3 different ways as like the previous answers. But according to the NopCommerce structure I didn't found those three at a time. I have just seen that there they are using just [AllowHtml] and it's working fine except any problem. As previously asked question

Personally I don't prefer [ValidateInput(false)] because i's skipping total model entity checking, which is insecure. But if anyone just write have a look here

[AllowHtml] 
public string BlogText {get;set;}

then it just skip only single property, and just allow only particular property and check hardly all other entities. Therefore it seems preferable towards mine.

From ?read.table: The number of data columns is determined by looking at the first five lines of input (or the whole file if it has less than five lines), or from the length of col.names if it is specified and is longer. This could conceivably be wrong if fill or blank.lines.skip are true, so specify col.names if necessary.

So, perhaps your data file isn't clean. Being more specific will help the data import:

d = read.table("foobar.txt", 
               sep="\t", 
               col.names=c("id", "name"), 
               fill=FALSE, 
               strip.white=TRUE)

will specify exact columns and fill=FALSE will force a two column data frame.

Did you test this :

var test = "This is my string"

let replaced = test.stringByReplacingOccurrencesOfString(" ", withString: "+", options: nil, range: nil)

Even though there are multiple answers, there is an issue using this approach. It selects all the text that matches, not only the whole words like variables.

As per "Sublime Text: Select all instances of a variable and edit variable name" and the answer in "Sublime Text: Select all instances of a variable and edit variable name", we have to start with a empty selection. That is, start using the shortcut Alt+F3 which would help selecting only the whole words.

Another source of stack smashing is (incorrect) use of vfork() instead of fork().

I just debugged a case of this, where the child process was unable to execve() the target executable and returned an error code rather than calling _exit().

Because vfork() had spawned that child, it returned while actually still executing within the parent's process space, not only corrupting the parent's stack, but causing two disparate sets of diagnostics to be printed by "downstream" code.

Changing vfork() to fork() fixed both problems, as did changing the child's return statement to _exit() instead.

But since the child code precedes the execve() call with calls to other routines (to set the uid/gid, in this particular case), it technically does not meet the requirements for vfork(), so changing it to use fork() is correct here.

(Note that the problematic return statement was not actually coded as such -- instead, a macro was invoked, and that macro decided whether to _exit() or return based on a global variable. So it wasn't immediately obvious that the child code was nonconforming for vfork() usage.)

For more information, see:

The difference between fork(), vfork(), exec() and clone()

It could be some un-initialized function pointer, in particular if you have corrupted memory (then the bogus vtable of C++ bad pointers to invalid objects might give that).

BTW gdb watchpoints & tracepoints, and also valgrind might be useful (if available) to debug such issues. Or some address sanitizer.

if you don't like the double brackets or you don't want to write a function, you can just use a variable.

$path = Test-Path C:\Code
if (!$path) {
    write "it doesn't exist!"
}

I believe prestomanifesto was on the right track. It depends on what kind of element it is. You would need to use element.get_attribute('value') for input elements and element.text to return the text node of an element.

You could check the WebElement object with element.tag_name to find out what kind of element it is and return the appropriate value.

This should help you figure out:

driver = webdriver.Firefox()
driver.get('http://www.w3c.org')
element = driver.find_element_by_name('q')
element.send_keys('hi mom')

element_text = element.text
element_attribute_value = element.get_attribute('value')

print element
print 'element.text: {0}'.format(element_text)
print 'element.get_attribute(\'value\'): {0}'.format(element_attribute_value)
driver.quit()

Ranking by stars or forks is not working. Each promoted or created by a famous company repository is popular at the beginning. Also it is possible to have a number of them which are in trend right now (publications, marketing, events). It doesn't mean that those repositories are useful/popular.

The gitmostwanted.com project (repo at github) analyses GH Archive data in order to highlight the most interesting repositories and exclude others. Just compare the results with mentioned resources.

This is mainly for future readers. As the question (at least the title) focuses on "connecting to sql server database from node js", I would like to chip in about "mssql" node module.

At this moment, we have a stable version of Microsoft SQL Server driver for NodeJs ("msnodesql") available here: https://www.npmjs.com/package/msnodesql. While it does a great job of native integration to Microsoft SQL Server database (than any other node module), there are couple of things to note about.

"msnodesql" require a few pre-requisites (like python, VC++, SQL native client etc.) to be installed on the host machine. That makes your "node" app "Windows" dependent. If you are fine with "Windows" based deployment, working with "msnodesql" is the best.

On the other hand, there is another module called "mssql" (available here https://www.npmjs.com/package/mssql) which can work with "tedious" or "msnodesql" based on configuration. While this module may not be as comprehensive as "msnodesql", it pretty much solves most of the needs.

If you would like to start with "mssql", I came across a simple and straight forward video, which explains about connecting to Microsoft SQL Server database using NodeJs here: https://www.youtube.com/watch?v=MLcXfRH1YzE

Source code for the above video is available here: http://techcbt.com/Post/341/Node-js-basic-programming-tutorials-videos/how-to-connect-to-microsoft-sql-server-using-node-js

Just in case, if the above links are not working, I am including the source code here:

var sql = require("mssql");_x000D_
_x000D_
var dbConfig = {_x000D_
    server: "localhost\\SQL2K14",_x000D_
    database: "SampleDb",_x000D_
    user: "sa",_x000D_
    password: "sql2014",_x000D_
    port: 1433_x000D_
};_x000D_
_x000D_
function getEmp() {_x000D_
    var conn = new sql.Connection(dbConfig);_x000D_
    _x000D_
    conn.connect().then(function () {_x000D_
        var req = new sql.Request(conn);_x000D_
        req.query("SELECT * FROM emp").then(function (recordset) {_x000D_
            console.log(recordset);_x000D_
            conn.close();_x000D_
        })_x000D_
        .catch(function (err) {_x000D_
            console.log(err);_x000D_
            conn.close();_x000D_
        });        _x000D_
    })_x000D_
    .catch(function (err) {_x000D_
        console.log(err);_x000D_
    });_x000D_
_x000D_
    //--> another way_x000D_
    //var req = new sql.Request(conn);_x000D_
    //conn.connect(function (err) {_x000D_
    //    if (err) {_x000D_
    //        console.log(err);_x000D_
    //        return;_x000D_
    //    }_x000D_
    //    req.query("SELECT * FROM emp", function (err, recordset) {_x000D_
    //        if (err) {_x000D_
    //            console.log(err);_x000D_
    //        }_x000D_
    //        else { _x000D_
    //            console.log(recordset);_x000D_
    //        }_x000D_
    //        conn.close();_x000D_
    //    });_x000D_
    //});_x000D_
_x000D_
}_x000D_
_x000D_
getEmp();

The above code is pretty self explanatory. We define the db connection parameters (in "dbConfig" JS object) and then use "Connection" object to connect to SQL Server. In order to execute a "SELECT" statement, in this case, it uses "Request" object which internally works with "Connection" object. The code explains both flavors of using "promise" and "callback" based executions.

The above source code explains only about connecting to sql server database and executing a SELECT query. You can easily take it to the next level by following documentation of "mssql" node available at: https://www.npmjs.com/package/mssql

UPDATE: There is a new video which does CRUD operations using pure Node.js REST standard (with Microsoft SQL Server) here: https://www.youtube.com/watch?v=xT2AvjQ7q9E. It is a fantastic video which explains everything from scratch (it has got heck a lot of code and it will not be that pleasing to explain/copy the entire code here)

I understand that this is fairly old question and has some pretty good answers. But, here is my two cents for the sake of completeness.

As per the official documentation, there are four ways, you can allow complete access for robots to access your site.

Clean:

Specify a global matcher with a disallow segment as mentioned by @unor. So your /robots.txt looks like this.

User-agent: *
Disallow:

The hack:

Create a /robots.txt file with no content in it. Which will default to allow all for all type of Bots.

I don't care way:

Do not create a /robots.txt altogether. Which should yield the exact same results as the above two.

The ugly:

From the robots documentation for meta tags, You can use the following meta tag on all your pages on your site to let the Bots know that these pages are not supposed to be indexed.

<META NAME="ROBOTS" CONTENT="NOINDEX">

In order for this to be applied to your entire site, You will have to add this meta tag for all of your pages. And this tag should strictly be placed under your HEAD tag of the page. More about this meta tag here.

I highly recommend argparse which comes with Python 2.7 and later.

The argparse module reduces boiler plate code and makes your code more robust, because the module handles all standard use cases (including subcommands), generates the help and usage for you, checks and sanitize the user input - all stuff you have to worry about when you are using sys.argv approach. And it is for free (built-in).

Here a small example:

import argparse

parser = argparse.ArgumentParser("simple_example")
parser.add_argument("counter", help="An integer will be increased by 1 and printed.", type=int)
args = parser.parse_args()
print(args.counter + 1)

and the output for python prog.py -h

usage: simple_example [-h] counter

positional arguments:
  counter     counter will be increased by 1 and printed.

optional arguments:
  -h, --help  show this help message and exit

and for python prog.py 1 as you would expect:

2

You cant get a decimal value by dividing one integer with another, you'll allways get an integer that way (result truncated to integer). You need at least one value to be a decimal number.

Try to use the func below to add colorbar:

def add_colorbar(mappable):
    from mpl_toolkits.axes_grid1 import make_axes_locatable
    import matplotlib.pyplot as plt
    last_axes = plt.gca()
    ax = mappable.axes
    fig = ax.figure
    divider = make_axes_locatable(ax)
    cax = divider.append_axes("right", size="5%", pad=0.05)
    cbar = fig.colorbar(mappable, cax=cax)
    plt.sca(last_axes)
    return cbar

Then you codes need to be modified as:

fig , ( (ax1,ax2) , (ax3,ax4)) = plt.subplots(2, 2,sharex = True,sharey=True)
z1_plot = ax1.scatter(x,y,c = z1,vmin=0.0,vmax=0.4)
add_colorbar(z1_plot)

To check for the existence of a process, use

kill -0 $pid

But just as @unwind said, if you're going to kill it anyway, just

kill $pid

or you will have a race condition.

If you want to ignore the text output of kill and do something based on the exit code, you can

if ! kill $pid > /dev/null 2>&1; then
    echo "Could not send SIGTERM to process $pid" >&2
fi

Telerik JustDecompile is free and has a feature to create projects from .NET assemblies.

I don't know whether you got the answer. I met this issue today, and I thought I got a possible right answer: you don't put the script file in a right location.

Most people don't meet this issue because they put the scripts into their server directory directly. I meet this because I make a link of the source file (the html file) to the server root directory. I didn't link the script files, and I don't know how nginx find them. But they are not loaded correctly.

After I linked all files to the server root directory, problem solved.

Just print out the embed after construction graph (ops) without running:

import tensorflow as tf

...

train_dataset = tf.placeholder(tf.int32, shape=[128, 2])
embeddings = tf.Variable(
    tf.random_uniform([50000, 64], -1.0, 1.0))
embed = tf.nn.embedding_lookup(embeddings, train_dataset)
print (embed)

This will show the shape of the embed tensor:

Tensor("embedding_lookup:0", shape=(128, 2, 64), dtype=float32)

Usually, it's good to check shapes of all tensors before training your models.

• Make sure your images are accurate size according to Apple guidelines.
• Make sure, You will select only one option , either launch screen file or Launch Image Source. You can find these two options in Project build settings -> General

My suggestion to you is to select Launch Image Source as Image.Assets. Create splash image assets there in Image.assests folder.

Reference image for right configuration:

list(data_set.itertuples(index=False))

As of 17.1, the above will return a list of namedtuples.

If you want a list of ordinary tuples, pass name=None as an argument:

list(data_set.itertuples(index=False, name=None))

Use mod_php7.c instead of mod_php5.c for PHP 7

Example

<IfModule mod_php7.c>
   php_value max_execution_time 500
</IfModule>

If you're using IIS Express, select Show All Application from IIS Express in the task bar notification area, then select Stop All.

Now re-run your application.

I hope you are trying to run the main class in this way, see screenshot:

If not, then try this way. If yes, then please make sure that your class you are trying to run has a main method, that is, the same method definition as below:

public static void main(String[] args) {
    // some code here
}

I hope this will help you.

A simple SQL example would be like this:

ALTER TABLE `<table_name>` ADD `<column_name>` INT(11) NULL DEFAULT NULL ;

Make sure you use back ticks `` in table name and column name

You can use the datetime module

import datetime
uniq_filename = str(datetime.datetime.now().date()) + '_' + str(datetime.datetime.now().time()).replace(':', '.')

Note that: I am using replace since the colons are not allowed in filenames in many operating systems.

That's it, this will give you a unique filename every single time.

The answers above were most useful and I learned a lot. However, for my needs the succinct answer is:

hg revert --all --rev ${1}

hg commit -m "Restoring branch ${1} as default"

where ${1} is the number of the revision or the name of the branch. These two lines are actually part of a bash script, but they work fine on their own if you want to do it manually.

This is useful if you need to add a hot fix to a release branch, but need to build from default (until we get our CI tools right and able to build from branches and later do away with release branches as well).

Active is when the user activating that point (Like mouse clicking, if we use tab from field-to-field there is no sign from active style. Maybe clicking need more time, just try hold click on that point), focus is happened after the point is activated. Try this :

<style type="text/css">
  input { font-weight: normal; color: black; }
  input:focus { color: green; outline: 1px solid green; }
  input:active { color: red; outline: 1px solid red; }
</style>

<input type="text"/>
<input type="text"/>

I use both because sometimes they give different, useful error messages.

The Python project was able to find and fix a number of small buglets when one of the core developers first tried compiling with clang.

Then provided your button is showing and the click event is being fired you can call the following in your click event:

final FragmentTransaction ft = getFragmentManager().beginTransaction(); 
ft.replace(R.id.details, new NewFragmentToReplace(), "NewFragmentTag"); 
ft.commit(); 

and if you want to go back to the DetailsFragment on clicking back ensure you add the above transaction to the back stack, i.e.

ft.addToBackStack(null);

Or am I missing something? Alternatively some people suggest that your activity gets the click event for the button and it has responsibility for replacing the fragments in your details pane.

About your command line:

root@debian:/# sudo iptables -A INPUT -p tcp --dport 3306 --jump ACCEPT
root@debian:/# iptables-save

• You are already authenticated as root so sudo is redundant there.

• You are missing the -j or --jump just before the ACCEPT parameter (just tought that was a typo and you are inserting it correctly).

About yout question:

If you are inserting the iptables rule correctly as you pointed it in the question, maybe the issue is related to the hypervisor (virtual machine provider) you are using.

If you provide the hypervisor name (VirtualBox, VMWare?) I can further guide you on this but here are some suggestions you can try first:

check your vmachine network settings and:

• if it is set to NAT, then you won't be able to connect from your base machine to the vmachine.

• if it is set to Hosted, you have to configure first its network settings, it is usually to provide them an IP in the range 192.168.56.0/24, since is the default the hypervisors use for this.

• if it is set to Bridge, same as Hosted but you can configure it whenever IP range makes sense for you configuration.

Hope this helps.

Where is this info kept ("this connection is between computer A and server F")?

A TCP connection is recognized by source IP and port and destination IP and port. Your OS, all intermediate session-aware devices and the server's OS will recognize the connection by this.

HTTP works with request-response: client connects to server, performs a request and gets a response. Without keep-alive, the connection to an HTTP server is closed after each response. With HTTP keep-alive you keep the underlying TCP connection open until certain criteria are met.

This allows for multiple request-response pairs over a single TCP connection, eliminating some of TCP's relatively slow connection startup.

When The IIS (F) sends keep alive header (or user sends keep-alive) , does it mean that (E,C,B) save a connection

No. Routers don't need to remember sessions. In fact, multiple TCP packets belonging to same TCP session need not all go through same routers - that is for TCP to manage. Routers just choose the best IP path and forward packets. Keep-alive is only for client, server and any other intermediate session-aware devices.

which is only for my session ?

Does it mean that no one else can use that connection

That is the intention of TCP connections: it is an end-to-end connection intended for only those two parties.

If so - does it mean that keep alive-header - reduce the number of overlapped connection users ?

Define "overlapped connections". See HTTP persistent connection for some advantages and disadvantages, such as:

• Lower CPU and memory usage (because fewer connections are open simultaneously).
• Enables HTTP pipelining of requests and responses.
• Reduced network congestion (fewer TCP connections).
• Reduced latency in subsequent requests (no handshaking).

if so , for how long does the connection is saved to me ? (in other words , if I set keep alive- "keep" till when?)

An typical keep-alive response looks like this:

Keep-Alive: timeout=15, max=100

See Hypertext Transfer Protocol (HTTP) Keep-Alive Header for example (a draft for HTTP/2 where the keep-alive header is explained in greater detail than both 2616 and 2086):

• A host sets the value of the timeout parameter to the time that the host will allows an idle connection to remain open before it is closed. A connection is idle if no data is sent or received by a host.

• The max parameter indicates the maximum number of requests that a client will make, or that a server will allow to be made on the persistent connection. Once the specified number of requests and responses have been sent, the host that included the parameter could close the connection.

However, the server is free to close the connection after an arbitrary time or number of requests (just as long as it returns the response to the current request). How this is implemented depends on your HTTP server.

$('.toggle img').data('block', 'something').attr('src', 'something.jpg');

Use inline shell string replacement. Example:

foo="  "

# replace first blank only
bar=${foo/ /.}

# replace all blanks
bar=${foo// /.}

See http://tldp.org/LDP/abs/html/string-manipulation.html for more details.

You can also use := construct to assign and decide on action in one step. Consider following example:

# Example of setting default server and reporting it's status

server=$1
if [[ ${server:=localhost} =~ [a-z] ]]      # 'localhost' assigned here to $server
then    echo "server is localhost"          # echo is triggered since letters were found in $server
else
        echo "server was set" # numbers were passed
fi

If $1 is not empty, localhost will be assigned to server in the if condition field, trigger match and report match result. In this way you can assign on the fly and trigger appropriate action.

Java is an object-oriented programming language (OOP). This means, that everything in Java, except of the primitive types is an object.

Now, Java objects are similar to real-world objects. For example we can create a car object in Java, which will have properties like current speed and color; and behavior like: accelerate and park.

That's Object.

Instance, on the other side, is a uniquely initialized copy of that object that looks like Car car = new Car().

Check it out to learn more about Java classes and object

Well Curl could be a better option for json representation but in that case it would be difficult to understand the structure of json because its in command line. if you want to get your json on browser you simply remove all the XML Annotations like -

@XmlRootElement(name="person")
@XmlAccessorType(XmlAccessType.NONE)
@XmlAttribute
@XmlElement

from your model class and than run the same url, you have used for xml representation.

Make sure that you have jacson-databind dependency in your pom.xml

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

I solve it by close safari inspector. Refer to my post. I also found sound sometimes when I run my app for testing, then I open safari with auto inspector on, after this, I do some action in my app then this issue triggered.

I had a similar scenario, and I thought that something like

str.replaceAll("\[|\]", "");

looked cleaner. Of course, if your token might have brackets in it, that wouldn't work.

There is exactly one reason why the following is preferred:

with open('filename.txt') as fp:
    for line in fp:
        print line

We are all spoiled by CPython's relatively deterministic reference-counting scheme for garbage collection. Other, hypothetical implementations of Python will not necessarily close the file "quickly enough" without the with block if they use some other scheme to reclaim memory.

In such an implementation, you might get a "too many files open" error from the OS if your code opens files faster than the garbage collector calls finalizers on orphaned file handles. The usual workaround is to trigger the GC immediately, but this is a nasty hack and it has to be done by every function that could encounter the error, including those in libraries. What a nightmare.

Or you could just use the with block.

Bonus Question

(Stop reading now if are only interested in the objective aspects of the question.)

Why isn't that included in the iterator protocol for file objects?

This is a subjective question about API design, so I have a subjective answer in two parts.

On a gut level, this feels wrong, because it makes iterator protocol do two separate things—iterate over lines and close the file handle—and it's often a bad idea to make a simple-looking function do two actions. In this case, it feels especially bad because iterators relate in a quasi-functional, value-based way to the contents of a file, but managing file handles is a completely separate task. Squashing both, invisibly, into one action, is surprising to humans who read the code and makes it more difficult to reason about program behavior.

Other languages have essentially come to the same conclusion. Haskell briefly flirted with so-called "lazy IO" which allows you to iterate over a file and have it automatically closed when you get to the end of the stream, but it's almost universally discouraged to use lazy IO in Haskell these days, and Haskell users have mostly moved to more explicit resource management like Conduit which behaves more like the with block in Python.

On a technical level, there are some things you may want to do with a file handle in Python which would not work as well if iteration closed the file handle. For example, suppose I need to iterate over the file twice:

with open('filename.txt') as fp:
    for line in fp:
        ...
    fp.seek(0)
    for line in fp:
        ...

While this is a less common use case, consider the fact that I might have just added the three lines of code at the bottom to an existing code base which originally had the top three lines. If iteration closed the file, I wouldn't be able to do that. So keeping iteration and resource management separate makes it easier to compose chunks of code into a larger, working Python program.

Composability is one of the most important usability features of a language or API.

The b denotes a byte string.

Bytes are the actual data. Strings are an abstraction.

If you had multi-character string object and you took a single character, it would be a string, and it might be more than 1 byte in size depending on encoding.

If took 1 byte with a byte string, you'd get a single 8-bit value from 0-255 and it might not represent a complete character if those characters due to encoding were > 1 byte.

TBH I'd use strings unless I had some specific low level reason to use bytes.

If you are using PHP, try using <?php flush(); ?> after </head> and before </body> or whatever section you want to output quickly (like the header or content). It will output the actually code without waiting for php to end. Don't use this function all the time, or the speed increase won't be noticable.

More info

Honestly I'm not super proud of the answer, but for small collections you could use the following:

var lastN = collection.Reverse().Take(n).Reverse();

A bit hacky but it does the job ;)

What was happening to me was that webdriver would find a reference to a DOM element and then at some point after that reference was obtained, javascript would remove that element and re-add it (because the page was doing a redraw, basically).

Try this. Figure out the action that causes the dom element to be removed from the DOM. In my case, it was an async ajax call, and the element was being removed from the DOM when the ajax call was complete. Right after that action, wait for the element to be stale:

... do a thing, possibly async, that should remove the element from the DOM ...
wait.until(ExpectedConditions.stalenessOf(theElement));

At this point you are sure that the element is now stale. So, the next time you reference the element, wait again, this time waiting for it to be re-added to the DOM:

wait.until(ExpectedConditions.presenceOfElementLocated(By.id("whatever")))

{
    "success": true,
    "data": {
        "BLR": {
            "origin": "JAI",
            "destination": "BLR",
            "price": 127,
            "transfers": 0,
            "airline": "LB",
            "flight_number": 655,
            "departure_at": "2017-06-03T18:20:00Z",
            "return_at": "2017-06-07T08:30:00Z",
            "expires_at": "2017-03-05T08:40:31Z"
        }
    }
};

I also was struggling with obtaining the correct IP.

I tried a variety of the solutions here but none provided me the desired affect. Almost all of the conditional tests that was provided caused no address to be used.

This is what worked for me, hope it helps...

var firstAddress = (from address in NetworkInterface.GetAllNetworkInterfaces().Select(x => x.GetIPProperties()).SelectMany(x => x.UnicastAddresses).Select(x => x.Address)
                    where !IPAddress.IsLoopback(address) && address.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork
                    select address).FirstOrDefault();

Console.WriteLine(firstAddress);

I tried out the filters referenced above and strongly disliked the effect it created. I also didn't want to use any plugins since they'd slow down loading time for what seems like such a basic effect.

In my case I was looking for a text shadow with a 0px blur, which means the shadow is an exact replica of the text but just offset and behind. This effect can be easily recreated with jquery.

<script>
    var shadowText = $(".ie9 .normalText").html();  
    $(".ie9 .normalText").before('<div class="shadow">' + shadowText + '</div>');
</script>
<style>
    .ie9 .shadow { position: relative; top: 2px; left: -3px; }
</style>

This will create an identical effect to the css3 text-shadow below.

    text-shadow: -3px 2px 0px rgba(0, 0, 0, 1.0);

here's a working example (see the large white text over the main banner image) http://www.cb.restaurantconnectinc.com/

Here's a super short template to do the sorting right away :

Collections.sort(people,new Comparator<Person>(){
   @Override
   public int compare(final Person lhs,Person rhs) {
     //TODO return 1 if rhs should be before lhs 
     //     return -1 if lhs should be before rhs
     //     return 0 otherwise (meaning the order stays the same)
     }
 });

if it's hard to remember, try to just remember that it's similar (in terms of the sign of the number) to:

 lhs-rhs 

That's in case you want to sort in ascending order : from smallest number to largest number.

Just pass your regression model into the following function:

    plot_coeffs <- function(mlr_model) {
      coeffs <- coefficients(mlr_model)
      mp <- barplot(coeffs, col="#3F97D0", xaxt='n', main="Regression Coefficients")
      lablist <- names(coeffs)
      text(mp, par("usr")[3], labels = lablist, srt = 45, adj = c(1.1,1.1), xpd = TRUE, cex=0.6)
    }

Use as follows:

model <- lm(Petal.Width ~ ., data = iris)

plot_coeffs(model)

I also faced the same problem a long time ago.

Here is the Solution

In Eclipse Click on "Windows"-->"Preferences"---->"Java"---> "Installed JREs"---->Select the JDK, click on "Edit".

Check your JDK path, is it according to your path in environmental variables defined in system. if not then change it to "path" defined directory.

In Express 4.x, there is an attachment() method to Response:

res.attachment();
// Content-Disposition: attachment

res.attachment('path/to/logo.png');
// Content-Disposition: attachment; filename="logo.png"
// Content-Type: image/png

This question is very similar to this one...

You need to force the cache to expire for this to work. Place the following code on your page code behind.

Page.Response.Cache.SetCacheability(HttpCacheability.NoCache)

It's true that the HTML specs permit certain tags to be omitted in certain cases, but generally doing so is unwise.

It has two effects - it makes the spec more complex, which in turn makes it harder for browser authors to write correct implementations (as demonstrated by IE getting it wrong).

This makes the likelihood of browser errors in these parts of the spec high. As a website author you can avoid the issue by including these tags - so while the spec doesn't say you have to, doing so reduces the chance of things going wrong, which is good engineering practice.

What's more, the latest HTML 5.1 WG spec currently says (bear in mind it's a work in progress and may yet change).

A body element's start tag may be omitted if the element is empty, or if the first thing inside the body element is not a space character or a comment, except if the first thing inside the body element is a meta, link, script, style, or template element.

http://www.w3.org/html/wg/drafts/html/master/sections.html#the-body-element

This is a little subtle. You can omit body and head, and the browser will then infer where those elements should be inserted. This carries the risk of not being explicit, which could cause confusion.

So this

<html>
  <h1>hello</h1>
  <script ... >
  ...

results in the script element being a child of the body element, but this

<html>
  <script ... >
  <h1>hello</h1>

would result in the script tag being a child of the head element.

You could be explicit by doing this

<html>
    <body>
      <script ... >
      <h1>hello</h1>

and then whichever you have first, the script or the h1, they will both, predictably appear in the body element. These are things which are easy to overlook while refactoring and debugging code. (say for example, you have JS which is looking for the 1st script element in the body - in the second snippet it would stop working).

As a general rule, being explicit about things is always better than leaving things open to interpretation. In this regard XHTML is better because it forces you to be completely explicit about your element structure in your code, which makes it simpler, and therefore less prone to misinterpretation.

So yes, you can omit them and be technically valid, but it is generally unwise to do so.

The fact that mongoDB is not relational have led some people to consider it useless. I think that you should know what you are doing before designing a DB. If you choose to use noSQL DB such as MongoDB, you better implement a schema. This will make your collections - more or less - resemble tables in SQL databases. Also, avoid denormalization (embedding), unless necessary for efficiency reasons.

If you want to design your own noSQL database, I suggest to have a look on Firebase documentation. If you understand how they organize the data for their service, you can easily design a similar pattern for yours.

As others pointed out, you will have to do the joins client-side, except with Meteor (a Javascript framework), you can do your joins server-side with this package (I don't know of other framework which enables you to do so). However, I suggest you read this article before deciding to go with this choice.

Edit 28.04.17: Recently Firebase published this excellent series on designing noSql Databases. They also highlighted in one of the episodes the reasons to avoid joins and how to get around such scenarios by denormalizing your database.

Edit: As of February, 2020, there's now a first-class UI for automatically mounting Drive.

First, open the file browser on the left hand side. It will show a 'Mount Drive' button. Once clicked, you'll see a permissions prompt to mount Drive, and afterwards your Drive files will be present with no setup when you return to the notebook. The completed flow looks like so:

The original answer follows, below. (This will also still work for shared notebooks.)

You can mount your Google Drive files by running the following code snippet:

from google.colab import drive
drive.mount('/content/drive')

Then, you can interact with your Drive files in the file browser side panel or using command-line utilities.

Here's an example notebook