Cause of No suitable driver found for

If you look at your original connection string:

<property name="url" value="jdbc:hsqldb:hsql://localhost"/>

The Hypersonic docs suggest that you're missing an alias after localhost:

http://hsqldb.org/doc/guide/ch04.html

View content of H2 or HSQLDB in-memory database

In H2, what works for me is:

I code, starting the server like:

server = Server.createTcpServer().start();

That starts the server on localhost port 9092.

Then, in code, establish a DB connection on the following JDBC URL:

jdbc:h2:tcp://localhost:9092/mem:test;DB_CLOSE_DELAY=-1;MODE=MySQL

While debugging, as a client to inspect the DB I use the one provided by H2, which is good enough, to launch it you just need to launch the following java main separately

org.h2.tools.Console

This will start a web server with an app on 8082, launch a browser on localhost:8082

And then you can enter the previous URL to see the DB

Huge performance difference when using group by vs distinct

The two queries express the same question. Apparently the query optimizer chooses two different execution plans. My guess would be that the distinct approach is executed like:

Copy all business_key values to a temporary table
Sort the temporary table
Scan the temporary table, returning each item that is different from the one before it

The group by could be executed like:

Scan the full table, storing each value of business key in a hashtable
Return the keys of the hashtable

The first method optimizes for memory usage: it would still perform reasonably well when part of the temporary table has to be swapped out. The second method optimizes for speed, but potentially requires a large amount of memory if there are a lot of different keys.

Since you either have enough memory or few different keys, the second method outperforms the first. It's not unusual to see performance differences of 10x or even 100x between two execution plans.

Remove all line breaks from a long string of text

updated based on Xbello comment:

string = my_string.rstrip('\r\n')

How do I set the value property in AngularJS' ng-options?

Instead of using the new 'track by' feature you can simply do this with an array if you want the values to be the same as the text:

<select ng-options="v as v for (k,v) in Array/Obj"></select>

Note the difference between the standard syntax, which will make the values the keys of the Object/Array, and therefore 0,1,2 etc. for an array:

<select ng-options"k as v for (k,v) in Array/Obj"></select>

k as v becomes v as v.

I discovered this just based on common sense looking at the syntax. (k,v) is the actual statement that splits the array/object into key value pairs.

In the 'k as v' statement, k will be the value, and v will be the text option displayed to the user. I think 'track by' is messy and overkill.

How to select from subquery using Laravel Query Builder?

From laravel 5.5 there is a dedicated method for subqueries and you can use it like this:

Abc::selectSub(function($q) {
    $q->select('*')->groupBy('col1');
}, 'a')->count('a.*');

Abc::selectSub(Abc::select('*')->groupBy('col1'), 'a')->count('a.*');

Common Header / Footer with static HTML

You could use a task runner such as gulp or grunt.

There is an NPM gulp package that does file including on the fly and compiles the result into an output HTML file. You can even pass values through to your partials.

https://www.npmjs.com/package/gulp-file-include

<!DOCTYPE html>
<html>
  <body>
  @@include('./header.html')
  @@include('./main.html')
  </body>
</html>

an example of a gulp task:

var fileinclude = require('gulp-file-include'),
    gulp = require('gulp');

    gulp.task('html', function() {
        return gulp.src(['./src/html/views/*.html'])
            .pipe(fileInclude({
                prefix: '@@',
                basepath: 'src/html'
            }))
            .pipe(gulp.dest('./build'));
    });

Python: No acceptable C compiler found in $PATH when installing python

On Arch Linux run the following:

sudo pacman -S base-devel

/** and /* in Java Comments

Comments in the following listing of Java Code are the greyed out characters:

/** 
 * The HelloWorldApp class implements an application that
 * simply displays "Hello World!" to the standard output.
 */
class HelloWorldApp {
    public static void main(String[] args) {
        System.out.println("Hello World!"); //Display the string.
    }
}

The Java language supports three kinds of comments:

/* text */

The compiler ignores everything from /* to */.

/** documentation */

This indicates a documentation comment (doc comment, for short). The compiler ignores this kind of comment, just like it ignores comments that use /* and */. The JDK javadoc tool uses doc comments when preparing automatically generated documentation.

// text

The compiler ignores everything from // to the end of the line.

Now regarding when you should be using them:

Use // text when you want to comment a single line of code.

Use /* text */ when you want to comment multiple lines of code.

Use /** documentation */ when you would want to add some info about the program that can be used for automatic generation of program documentation.

Custom thread pool in Java 8 parallel stream

If you don't need a custom ThreadPool but you rather want to limit the number of concurrent tasks, you can use:

List<Path> paths = List.of("/path/file1.csv", "/path/file2.csv", "/path/file3.csv").stream().map(e -> Paths.get(e)).collect(toList());
List<List<Path>> partitions = Lists.partition(paths, 4); // Guava method

partitions.forEach(group -> group.parallelStream().forEach(csvFilePath -> {
       // do your processing   
}));

(Duplicate question asking for this is locked, so please bear me here)

How to break out of while loop in Python?

A couple of changes mean that only an R or r will roll. Any other character will quit

import random

while True:
    print('Your score so far is {}.'.format(myScore))
    print("Would you like to roll or quit?")
    ans = input("Roll...")
    if ans.lower() == 'r':
        R = np.random.randint(1, 8)
        print("You rolled a {}.".format(R))
        myScore = R + myScore
    else:
        print("Now I'll see if I can break your score...")
        break

Laravel blank white screen

I was struggling with a similar issue on a CentOS server. Using php artisan serv and accessing it through port 8000 on the local machine worked fine but could not get my remote machines to load a particular view. I could return strings fine, and some views were loading. Chased my tail on permissions for a while before I finally realized it was an SELinux issue. I just set it from enforce to permissive and it worked. Hope that helps someone else out there that may be encountering the same issue.

setenforce permissive

"replace" function examples

Be aware that the third parameter (value) in the examples given above: the value is a constant (e.g. 'Z' or c(20,30)).

Defining the third parameter using values from the data frame itself can lead to confusion.

E.g. with a simple data frame such as this (using dplyr::data_frame):

tmp <- data_frame(a=1:10, b=sample(LETTERS[24:26], 10, replace=T))

This will create somthing like this:

       a     b
   (int) (chr)
1      1     X
2      2     Y
3      3     Y
4      4     X
5      5     Z

..etc

Now suppose you want wanted to do, was to multiply the values in column 'a' by 2, but only where column 'b' is "X". My immediate thought would be something like this:

with(tmp, replace(a, b=="X", a*2))

That will not provide the desired outcome, however. The a*2 will defined as a fixed vector rather than a reference to the 'a' column. The vector 'a*2' will thus be

[1]  2  4  6  8 10 12 14 16 18 20

at the start of the 'replace' operation. Thus, the first row where 'b' equals "X", the value in 'a' will be placed by 2. The second time, it will be replaced by 4, etc ... it will not be replaced by two-times-the-value-of-a in that particular row.

"Connection for controluser as defined in your configuration failed" with phpMyAdmin in XAMPP

I just simply make changes on config.inc.php file. There is password in error in this link $cfg['Servers'][$i]['password'] = 'your password '; and now its perfectly worked .

What is the difference between "Form Controls" and "ActiveX Control" in Excel 2010?

One major difference that is important to know is that ActiveX controls show up as objects that you can use in your code- try inserting an ActiveX control into a worksheet, bring up the VBA editor (ALT + F11) and you will be able to access the control programatically. You can't do this with form controls (macros must instead be explicitly assigned to each control), but form controls are a little easier to use. If you are just doing something simple, it doesn't matter which you use but for more advanced scripts ActiveX has better possibilities.

ActiveX is also more customizable.

header('HTTP/1.0 404 Not Found'); not doing anything

i think this will help you

content of .htaccess

ErrorDocument 404 /error.php
ErrorDocument 400 /error.php
ErrorDocument 401 /error.php
ErrorDocument 403 /error.php
ErrorDocument 405 /error.php
ErrorDocument 406 /error.php
ErrorDocument 409 /error.php
ErrorDocument 413 /error.php
ErrorDocument 414 /error.php
ErrorDocument 500 /error.php
ErrorDocument 501 /error.php

error.php and .htaccess should be put in the same directory [in this case]

What's the difference between a word and byte?

The exact length of a word varies. What I don't understand is what's the point of having a byte? Why not say 8 bits?

Even though the length of a word varies, on all modern machines and even all older architectures that I'm familiar with, the word size is still a multiple of the byte size. So there is no particular downside to using "byte" over "8 bits" in relation to the variable word size.

Beyond that, here are some reasons to use byte (or octet¹) over "8 bits":

Larger units are just convenient to avoid very large or very small numbers: you might as well ask "why say 3 nanoseconds when you could say 0.000000003 seconds" or "why say 1 kilogram when you could say 1,000 grams", etc.
Beyond the convenience, the unit of a byte is somehow as fundamental as 1 bit since many operations typically work not at the byte level, but at the byte level: addressing memory, allocating dynamic storage, reading from a file or socket, etc.
Even if you were to adopt "8 bit" as a type of unit, so you could say "two 8-bits" instead of "two bytes", it would be often be very confusing to have your new unit start with a number. For example, if someone said "one-hundred 8-bits" it could easily be interpreted as 108 bits, rather than 100 bits.

¹ Although I'll consider a byte to be 8 bits for this answer, this isn't universally true: on older machines a byte may have a different size (such as 6 bits. Octet always means 8 bits, regardless of the machine (so this term is often used in defining network protocols). In modern usage, byte is overwhelmingly used as synonymous with 8 bits.

What range of values can integer types store in C++

To find out the limits on your system:

#include <iostream>
#include <limits>
int main(int, char **) {
  std::cout
    << static_cast< int >(std::numeric_limits< char >::max()) << "\n"
    << static_cast< int >(std::numeric_limits< unsigned char >::max()) << "\n"
    << std::numeric_limits< short >::max() << "\n"
    << std::numeric_limits< unsigned short >::max() << "\n"
    << std::numeric_limits< int >::max() << "\n"
    << std::numeric_limits< unsigned int >::max() << "\n"
    << std::numeric_limits< long >::max() << "\n"
    << std::numeric_limits< unsigned long >::max() << "\n"
    << std::numeric_limits< long long >::max() << "\n"
    << std::numeric_limits< unsigned long long >::max() << "\n";
}

Note that long long is only legal in C99 and in C++11.

How to retrieve the current version of a MySQL database management system (DBMS)?

Many answers suggest to use mysql --version. But the mysql programm is the client. The server is mysqld. So the command should be

mysqld --version

mysqld --help

That works for me on Debian and Windows.

When connected to a MySQL server with a client you can use

select version()

select @@version

Exception thrown inside catch block - will it be caught again?

It won't be caught by the second catch block. Each Exception is caught only when inside a try block. You can nest tries though (not that it's a good idea generally):

try {
    doSomething();
} catch (IOException) {
   try {
       doSomething();
   } catch (IOException e) {
       throw new ApplicationException("Failed twice at doSomething" +
       e.toString());
   }          
} catch (Exception e) {
}

Connect to mysql on Amazon EC2 from a remote server

Update: Feb 2017

Here are the COMPLETE STEPS for remote access of MySQL (deployed on Amazon EC2):-

1. Add MySQL to inbound rules.

Go to security group of your ec2 instance -> edit inbound rules -> add new rule -> choose MySQL/Aurora and source to Anywhere.

2. Add bind-address = 0.0.0.0 to my.cnf

In instance console:

sudo vi /etc/mysql/my.cnf

this will open vi editor.
in my.cnf file, after [mysqld] add new line and write this:

bind-address = 0.0.0.0

Save file by entering :wq(enter)

now restart MySQL:

sudo /etc/init.d/mysqld restart

3. Create a remote user and grant privileges.

mysql -u root -p mysql (enter password after this)

Now write following commands:

CREATE USER 'jerry'@'localhost' IDENTIFIED BY 'jerrypassword';

CREATE USER 'jerry'@'%' IDENTIFIED BY 'jerrypassword';

GRANT ALL PRIVILEGES ON *.* to jerry@localhost IDENTIFIED BY 'jerrypassword' WITH GRANT OPTION;

GRANT ALL PRIVILEGES ON *.* to jerry@'%' IDENTIFIED BY 'jerrypassword' WITH GRANT OPTION;

FLUSH PRIVILEGES;

EXIT;

After this, MySQL dB can be remotely accessed by entering public dns/ip of your instance as MySQL Host Address, username as jerry and password as jerrypassword. (Port is set to default at 3306)

Clone contents of a GitHub repository (without the folder itself)

If the current directory is empty, you can do that with:

git clone git@github:me/name.git .

(Note the . at the end to specify the current directory.) Of course, this also creates the .git directory in your current folder, not just the source code from your project.

This optional [directory] parameter is documented in the git clone manual page, which points out that cloning into an existing directory is only allowed if that directory is empty.

Installing OpenCV for Python on Ubuntu, getting ImportError: No module named cv2.cv

You can build for source following the official OpenCV tutorial. The crucial part is to set the PYTHON3_EXECUTABLE, PYTHON_LIBRARY, PYTHON3_PACKAGES_PATH and PYTHON3_NUMPY_INCLUDE_DIRS parameters for python3.6. Here are all the steps:

Clone the repo

git clone https://github.com/opencv/opencv.git

Create build directory
```
cd ~/opencv
mkdir build
cd build
```

Configure

cmake -D CMAKE_BUILD_TYPE=RELEASE \
      -D CMAKE_INSTALL_PREFIX=/usr/local .. \
      -D PYTHON_INCLUDE_DIR=/usr/include/python3.6 \
      -D PYTHON_INCLUDE_DIR2=/usr/include/x86_64-linux-gnu/python3.6m \
      -D BUILD_NEW_PYTHON_SUPPORT=ON \
      -D BUILD_opencv_python3=ON \
      -D HAVE_opencv_python3=ON \
      -D INSTALL_PYTHON_EXAMPLES=ON \
      -D PYTHON3_EXECUTABLE=/usr/bin/python3.6 \
      -D PYTHON_DEFAULT_EXECUTABLE=/usr/bin/python3.6 \
      -D PYTHON_LIBRARY=/usr/lib/x86_64-linux-gnu/libpython3.6m.so \
      -D PYTHON3_PACKAGES_PATH=/usr/lib/python3/dist-packages .. \
      -D PYTHON3_NUMPY_INCLUDE_DIRS=/home/user/.local/lib/python3.6/site-packages/numpy/core/include/

Build
```
make -j8
```
Install libraries
```
sudo make install
```
Test
```
python3
import cv2
```

If you don't get the error "No module named cv2", then the installation was successful.

Note: If you don't know the path to numpy for the PYTHON3_NUMPY_INCLUDE_DIRS parameter, you can find it by executing import numpy and then numpy.__file__ in a python3 shell.

Foreign key referencing a 2 columns primary key in SQL Server

I had the same problem and I think I have the solution.

If your field Application in table Library has a foreign key that references a field in another table (named Application I would bet), then your field Application in table Library has to have a foreign key to table Application too.

After that you can do your composed foreign key.

Excuse my poor english, and sorry if I'm wrong.

Get list of certificates from the certificate store in C#

Yes -- the X509Store.Certificates property returns a snapshot of the X.509 certificate store.

Repeat a task with a time delay?

Based on the above post concerning the ScheduledThreadPoolExecutor, I came up with a utility that suited my needs (wanted to fire a method every 3 seconds):

class MyActivity {
    private ScheduledThreadPoolExecutor mDialogDaemon;

    private void initDebugButtons() {
        Button btnSpawnDialogs = (Button)findViewById(R.id.btn_spawn_dialogs);
        btnSpawnDialogs.setVisibility(View.VISIBLE);
        btnSpawnDialogs.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View view) {
                spawnDialogs();
            }
        });
    }

    private void spawnDialogs() {
        if (mDialogDaemon != null) {
            mDialogDaemon.shutdown();
            mDialogDaemon = null;
        }
        mDialogDaemon = new ScheduledThreadPoolExecutor(1);
        // This process will execute immediately, then execute every 3 seconds.
        mDialogDaemon.scheduleAtFixedRate(new Runnable() {
            @Override
            public void run() {
                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        // Do something worthwhile
                    }
                });
            }
        }, 0L, 3000L, TimeUnit.MILLISECONDS);
    }
}

Binding an Image in WPF MVVM

Displaying an Image in WPF is much easier than that. Try this:

<Image Source="{Binding DisplayedImagePath}" HorizontalAlignment="Left" 
    Margin="0,0,0,0" Name="image1" Stretch="Fill" VerticalAlignment="Bottom" 
    Grid.Row="8" Width="200"  Grid.ColumnSpan="2" />

And the property can just be a string:

public string DisplayedImage 
{
    get { return @"C:\Users\Public\Pictures\Sample Pictures\Chrysanthemum.jpg"; }
}

Although you really should add your images to a folder named Images in the root of your project and set their Build Action to Resource in the Properties Window in Visual Studio... you could then access them using this format:

public string DisplayedImage 
{
    get { return "/AssemblyName;component/Images/ImageName.jpg"; }
}

UPDATE >>>

As a final tip... if you ever have a problem with a control not working as expected, simply type 'WPF', the name of that control and then the word 'class' into a search engine. In this case, you would have typed 'WPF Image Class'. The top result will always be MSDN and if you click on the link, you'll find out all about that control and most pages have code examples as well.

UPDATE 2 >>>

If you followed the examples from the link to MSDN and it's not working, then your problem is not the Image control. Using the string property that I suggested, try this:

<StackPanel>
    <Image Source="{Binding DisplayedImagePath}" />
    <TextBlock Text="{Binding DisplayedImagePath}" />
</StackPanel>

If you can't see the file path in the TextBlock, then you probably haven't set your DataContext to the instance of your view model. If you can see the text, then the problem is with your file path.

UPDATE 3 >>>

In .NET 4, the above Image.Source values would work. However, Microsoft made some horrible changes in .NET 4.5 that broke many different things and so in .NET 4.5, you'd need to use the full pack path like this:

<Image Source="pack://application:,,,/AssemblyName;component/Images/image_to_use.png">

For further information on pack URIs, please see the Pack URIs in WPF page on Microsoft Docs.

How to Alter a table for Identity Specification is identity SQL Server

You cannot "convert" an existing column into an IDENTITY column - you will have to create a new column as INT IDENTITY:

ALTER TABLE ProductInProduct 
ADD NewId INT IDENTITY (1, 1);

Update:

OK, so there is a way of converting an existing column to IDENTITY. If you absolutely need this - check out this response by Martin Smith with all the gory details.

java.io.InvalidClassException: local class incompatible:

Serialisation in java is not meant as long term persistence or transport format - it is too fragile for this. With the slightest difference in class bytecode and JVM, your data is not readable anymore. Use XML or JSON data-binding for your task (XStream is fast and easy to use, and there are a ton of alternatives)

What is git fast-forwarding?

In Git, to "fast forward" means to update the HEAD pointer in such a way that its new value is a direct descendant of the prior value. In other words, the prior value is a parent, or grandparent, or grandgrandparent, ...

Fast forwarding is not possible when the new HEAD is in a diverged state relative to the stream you want to integrate. For instance, you are on master and have local commits, and git fetch has brought new upstream commits into origin/master. The branch now diverges from its upstream and cannot be fast forwarded: your master HEAD commit is not an ancestor of origin/master HEAD. To simply reset master to the value of origin/master would discard your local commits. The situation requires a rebase or merge.

If your local master has no changes, then it can be fast-forwarded: simply updated to point to the same commit as the latestorigin/master. Usually, no special steps are needed to do fast-forwarding; it is done by merge or rebase in the situation when there are no local commits.

Is it ok to assume that fast-forward means all commits are replayed on the target branch and the HEAD is set to the last commit on that branch?

No, that is called rebasing, of which fast-forwarding is a special case when there are no commits to be replayed (and the target branch has new commits, and the history of the target branch has not been rewritten, so that all the commits on the target branch have the current one as their ancestor.)

getting the error: expected identifier or ‘(’ before ‘{’ token

{
int main(void);

should be

int main(void)
{

Then I let you fix the next compilation errors of your program...

Using R to download zipped data file, extract, and import data

I found that the following worked for me. These steps come from BTD's YouTube video, Managing Zipfile's in R:

zip.url <- "url_address.zip"

dir <- getwd()

zip.file <- "file_name.zip"

zip.combine <- as.character(paste(dir, zip.file, sep = "/"))

download.file(zip.url, destfile = zip.combine)

unzip(zip.file)

How can I reconcile detached HEAD with master/origin?

First, let’s clarify what HEAD is and what it means when it is detached.

HEAD is the symbolic name for the currently checked out commit. When HEAD is not detached (the “normal”¹ situation: you have a branch checked out), HEAD actually points to a branch’s “ref” and the branch points to the commit. HEAD is thus “attached” to a branch. When you make a new commit, the branch that HEAD points to is updated to point to the new commit. HEAD follows automatically since it just points to the branch.

git symbolic-ref HEAD yields refs/heads/master
The branch named “master” is checked out.
git rev-parse refs/heads/master yield 17a02998078923f2d62811326d130de991d1a95a
That commit is the current tip or “head” of the master branch.
git rev-parse HEAD also yields 17a02998078923f2d62811326d130de991d1a95a
This is what it means to be a “symbolic ref”. It points to an object through some other reference.
(Symbolic refs were originally implemented as symbolic links, but later changed to plain files with extra interpretation so that they could be used on platforms that do not have symlinks.)

We have HEAD ? refs/heads/master ? 17a02998078923f2d62811326d130de991d1a95a

When HEAD is detached, it points directly to a commit—instead of indirectly pointing to one through a branch. You can think of a detached HEAD as being on an unnamed branch.

git symbolic-ref HEAD fails with fatal: ref HEAD is not a symbolic ref
git rev-parse HEAD yields 17a02998078923f2d62811326d130de991d1a95a
Since it is not a symbolic ref, it must point directly to the commit itself.

We have HEAD ? 17a02998078923f2d62811326d130de991d1a95a

The important thing to remember with a detached HEAD is that if the commit it points to is otherwise unreferenced (no other ref can reach it), then it will become “dangling” when you checkout some other commit. Eventually, such dangling commits will be pruned through the garbage collection process (by default, they are kept for at least 2 weeks and may be kept longer by being referenced by HEAD’s reflog).

¹ It is perfectly fine to do “normal” work with a detached HEAD, you just have to keep track of what you are doing to avoid having to fish dropped history out of the reflog.

The intermediate steps of an interactive rebase are done with a detached HEAD (partially to avoid polluting the active branch’s reflog). If you finish the full rebase operation, it will update your original branch with the cumulative result of the rebase operation and reattach HEAD to the original branch. My guess is that you never fully completed the rebase process; this will leave you with a detached HEAD pointing to the commit that was most recently processed by the rebase operation.

To recover from your situation, you should create a branch that points to the commit currently pointed to by your detached HEAD:

git branch temp
git checkout temp

_{(these two commands can be abbreviated as git checkout -b temp)}

This will reattach your HEAD to the new temp branch.

Next, you should compare the current commit (and its history) with the normal branch on which you expected to be working:

git log --graph --decorate --pretty=oneline --abbrev-commit master origin/master temp
git diff master temp
git diff origin/master temp

(You will probably want to experiment with the log options: add -p, leave off --pretty=… to see the whole log message, etc.)

If your new temp branch looks good, you may want to update (e.g.) master to point to it:

git branch -f master temp
git checkout master

_{(these two commands can be abbreviated as git checkout -B master temp)}

You can then delete the temporary branch:

git branch -d temp

Finally, you will probably want to push the reestablished history:

git push origin master

You may need to add --force to the end of this command to push if the remote branch can not be “fast-forwarded” to the new commit (i.e. you dropped, or rewrote some existing commit, or otherwise rewrote some bit of history).

If you were in the middle of a rebase operation you should probably clean it up. You can check whether a rebase was in process by looking for the directory .git/rebase-merge/. You can manually clean up the in-progress rebase by just deleting that directory (e.g. if you no longer remember the purpose and context of the active rebase operation). Usually you would use git rebase --abort, but that does some extra resetting that you probably want to avoid (it moves HEAD back to the original branch and resets it back to the original commit, which will undo some of the work we did above).

Modifying CSS class property values on the fly with JavaScript / jQuery

This solution modifies Cycne's to use ES6 syntax and exit the loop early for external stylesheets. This solution does not modify external stylesheets

_x000D_

function changeStyle(findSelector, newDeclarations) {_x000D_
    // Change original css style declaration._x000D_
    document.styleSheets.forEach((sheet) => {_x000D_
      if (sheet.href) return;_x000D_
      const cssRulesList = sheet.cssRules;_x000D_
      cssRulesList.forEach((styleRule) => {_x000D_
        if (styleRule.selectorText === findSelector) {_x000D_
          Object.keys(newDeclarations).forEach((cssProp) => {_x000D_
            styleRule.style[cssProp] = newDeclarations[cssProp];_x000D_
          });_x000D_
        }_x000D_
      });_x000D_
    });_x000D_
  }_x000D_
_x000D_
  const styleDeclarations = {_x000D_
    'width': '200px',_x000D_
    'height': '400px',_x000D_
    'color': '#F00'_x000D_
  };_x000D_
  changeStyle('.paintBox', styleDeclarations);

_x000D_

You must also have at least one style tag in your HTML head section, for example

<style> .paintBox {background-color: white;}</style>

MySql Inner Join with WHERE clause

You are using two WHERE clauses but only one is allowed. Use it like this:

SELECT table1.f_id FROM table1
INNER JOIN table2 ON table2.f_id = table1.f_id
WHERE
  table1.f_com_id = '430'
  AND table1.f_status = 'Submitted'
  AND table2.f_type = 'InProcess'

Data binding for TextBox

We can use following code

textBox1.DataBindings.Add("Text", model, "Name", false, DataSourceUpdateMode.OnPropertyChanged);

Where

"Text" – the property of textbox
model – the model object enter code here
"Name" – the value of model which to bind the textbox.

HTML - how to make an entire DIV a hyperlink?

alternative would be javascript and forwarding via the onclick event

<div onclick="window.location.href='somewhere...';">...</div>

Determining if a number is prime

If n is 2, it's prime.

If n is 1, it's not prime.

If n is even, it's not prime.

If n is odd, bigger than 2, we must check all odd numbers 3..sqrt(n)+1, if any of this numbers can divide n, n is not prime, else, n is prime.

For better performance i recommend sieve of eratosthenes.

Here is the code sample:

bool is_prime(int n)
{
  if (n == 2) return true;
  if (n == 1 || n % 2 == 0) return false;

  for (int i = 3; i*i < n+1; i += 2) {
      if (n % i == 0) return false;
  }

  return true;
}

Exporting data In SQL Server as INSERT INTO

For the sake of over-explicit brainlessness, after following marc_s' instructions to here...

In SSMS in the Object Explorer, right click on the database right-click and pick "Tasks" and then "Generate Scripts".

... I then see a wizard screen with "Introduction, Choose Objects, Set Scripting Options, Summary, and Save or Publish Scripts" with prev, next, finish, cancel buttons at the bottom.

On the Set Scripting Options step, you have to click "Advanced" to get the page with the options. Then, as Ghlouw has mentioned, you now select "Types of data to script" and profit.

advanced button HIGHLIGHTED IN RED!1!!

100% width in React Native Flexbox

Simply add alignSelf: "stretch" to your item's stylesheet.

line1: {
    backgroundColor: '#FDD7E4',
    alignSelf: 'stretch',
    textAlign: 'center',
},

constant pointer vs pointer on a constant value

You may use cdecl utility or its online versions, like https://cdecl.org/

For example:

void (* x)(int (*[])()); is a declare x as pointer to function (array of pointer to function returning int) returning void

Merging 2 branches together in GIT

merge is used to bring two (or more) branches together.

a little example:

# on branch A:
# create new branch B
$ git checkout -b B
# hack hack
$ git commit -am "commit on branch B"

# create new branch C from A
$ git checkout -b C A
# hack hack
$ git commit -am "commit on branch C"

# go back to branch A
$ git checkout A
# hack hack
$ git commit -am "commit on branch A"

so now there are three separate branches (namely A B and C) with different heads

to get the changes from B and C back to A, checkout A (already done in this example) and then use the merge command:

# create an octopus merge
$ git merge B C

your history will then look something like this:

…-o-o-x-------A
      |\     /|
      | B---/ |
       \     /
        C---/

if you want to merge across repository/computer borders, have a look at git pull command, e.g. from the pc with branch A (this example will create two new commits):

# pull branch B
$ git pull ssh://host/… B
# pull branch C
$ git pull ssh://host/… C

How to run shell script file using nodejs?

Also, you can use shelljs plugin. It's easy and it's cross-platform.

Install command:

npm install [-g] shelljs

What is shellJS

ShellJS is a portable (Windows/Linux/OS X) implementation of Unix shell commands on top of the Node.js API. You can use it to eliminate your shell script's dependency on Unix while still keeping its familiar and powerful commands. You can also install it globally so you can run it from outside Node projects - say goodbye to those gnarly Bash scripts!

An example of how it works:

var shell = require('shelljs');

if (!shell.which('git')) {
  shell.echo('Sorry, this script requires git');
  shell.exit(1);
}

// Copy files to release dir
shell.rm('-rf', 'out/Release');
shell.cp('-R', 'stuff/', 'out/Release');

// Replace macros in each .js file
shell.cd('lib');
shell.ls('*.js').forEach(function (file) {
  shell.sed('-i', 'BUILD_VERSION', 'v0.1.2', file);
  shell.sed('-i', /^.*REMOVE_THIS_LINE.*$/, '', file);
  shell.sed('-i', /.*REPLACE_LINE_WITH_MACRO.*\n/, shell.cat('macro.js'), file);
});
shell.cd('..');

// Run external tool synchronously
if (shell.exec('git commit -am "Auto-commit"').code !== 0) {
  shell.echo('Error: Git commit failed');
  shell.exit(1);
}

Also, you can use from the command line:

$ shx mkdir -p foo
$ shx touch foo/bar.txt
$ shx rm -rf foo

How do I add a newline to a TextView in Android?

If you debug, you will see that the string is actually "\ \r\ \n" or "\ \n", ie, it is escaped. So if you massage that string, to get rid of the extra \, you will have your solution. This is true especially if you are reading from a database.

Where could I buy a valid SSL certificate?

You are really asking a couple of questions here:

1) Why does the price of SSL certificates vary so much

2) Where can I get good, cheap SSL certificates?

The first question is a good one. For example, the type of SSL certificate you buy is important. Many SSL certificates are domain verified only - that is, the company issuing the certificate only validate that you own the domain. They don't validate your identity, so people visiting your site might know that the domain has a SSL certificate, but that doesn't mean the person behing the website isn't a scammer or phisher, for example. This is why the Verisign solution is much more expensive - you are getting a cert that not only secures your site, but validates the identity of the owner of the site (well, that's the claim).

You can read more on this subject here

For your second question, I can personally recommend RapidSSL. I've bought several certificates from them in the past and they are, well, rapid. However, you should always do your research first. A company based in France might be better for you to deal with as you can get support in your local hours, etc.

How do I get current date/time on the Windows command line in a suitable format for usage in a file/folder name?

A function that is based on wmic:

:Now  -- Gets the current date and time into separate variables
::    %~1: [out] Year
::    %~2: [out] Month
::    %~3: [out] Day
::    %~4: [out] Hour
::    %~5: [out] Minute
::    %~6: [out] Second
  setlocal
  for /f %%t in ('wmic os get LocalDateTime ^| findstr /b [0-9]') do set T=%%t
  endlocal & (
    if "%~1" neq "" set %~1=%T:~0,4%
    if "%~2" neq "" set %~2=%T:~4,2%
    if "%~3" neq "" set %~3=%T:~6,2%
    if "%~4" neq "" set %~4=%T:~8,2%
    if "%~5" neq "" set %~5=%T:~10,2%
    if "%~6" neq "" set %~6=%T:~12,2%
  )
goto:eof

Upside: Region independent. Downside: Only system administrators can run wmic.exe.

Usage:

call:Now Y M D H N S
echo %Y%-%M%-%D% %H%:%N%:%S%

This echos a string like this:

2014-01-22 12:51:53

Note that function parameters are out-Parameters - that is, you must supply variable names instead of values.

All parameters are optional, so call:Now Y M is a valid call if you only want to get year and month.

Xcode 10, Command CodeSign failed with a nonzero exit code

The solution for me was restarting macOS without saving

Storing an object in state of a React component?

In addition to kiran's post, there's the update helper (formerly a react addon). This can be installed with npm using npm install immutability-helper

import update from 'immutability-helper';

var abc = update(this.state.abc, {
   xyz: {$set: 'foo'}
});

this.setState({abc: abc});

This creates a new object with the updated value, and other properties stay the same. This is more useful when you need to do things like push onto an array, and set some other value at the same time. Some people use it everywhere because it provides immutability.

If you do this, you can have the following to make up for the performance of

shouldComponentUpdate: function(nextProps, nextState){
   return this.state.abc !== nextState.abc; 
   // and compare any props that might cause an update
}

How can I see normal print output created during pytest run?

pytest test_name.py -v -s

Simple!

Using custom fonts using CSS?

Today there are four font container formats in use on the web: EOT, TTF, WOFF,andWOFF2.

Unfortunately, despite the wide range of choices, there isn't a single universal format that works across all old and new browsers:

EOT is IE only,
TTF has partial IE support,
WOFF enjoys the widest support but is not available in some older browsers
WOFF 2.0 support is a work in progress for many browsers.

If you want your web app to have the same font across all browsers then you might want to provide all 4 font type in CSS

 @font-face {
      font-family: 'besom'; !important
      src: url('fonts/besom/besom.eot');
      src: url('fonts/besom/besom.eot?#iefix') format('embedded-opentype'),
           url('fonts/besom/besom.woff2') format('woff2'),
           url('fonts/besom/besom.woff') format('woff'),
           url('fonts/besom/besom.ttf') format('truetype'),
           url('fonts/besom/besom.svg#besom_2regular') format('svg');
      font-weight: normal;
      font-style: normal;
  }

Fatal error: Call to a member function query() on null

put this line in parent construct : $this->load->database();

function  __construct() {
    parent::__construct();
    $this->load->library('lib_name');
    $model=array('model_name');
    $this->load->model($model);
    $this->load->database();
}

this way.. it should work..

Setting max-height for table cell contents

Another way around it that may/may not suit but surely the simplest:

td {
    display: table-caption;
}

Evaluating a mathematical expression in a string

This is a massively late reply, but I think useful for future reference. Rather than write your own math parser (although the pyparsing example above is great) you could use SymPy. I don't have a lot of experience with it, but it contains a much more powerful math engine than anyone is likely to write for a specific application and the basic expression evaluation is very easy:

>>> import sympy
>>> x, y, z = sympy.symbols('x y z')
>>> sympy.sympify("x**3 + sin(y)").evalf(subs={x:1, y:-3})
0.858879991940133

Very cool indeed! A from sympy import * brings in a lot more function support, such as trig functions, special functions, etc., but I've avoided that here to show what's coming from where.

How do I remove background-image in css?

background-image: -webkit-gradient(linear, left top, left bottom, color-stop(0, #fff), color-stop(0.5, #fff));
background-image: -webkit-linear-gradient(center top, #fff 0%, #fff 50%);
background-image: -moz-linear-gradient(center top, #fff 0%, #fff 50%);
filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffffff', endColorstr='#ffffff', GradientType=0);
background-image: linear-gradient(to bottom, #fff 0%, #fff 50%);

for older browsers.. if you have defined css in some framewokrk.css like select2.css in IE9 background-image: -webkit-gradient etc. and you want it via another .css rewrite with "background-image: none !important" not works. I used same color to color gradient like page background color.

Correct way to create rounded corners in Twitter Bootstrap

Bootstrap is just a big, useful, yet simple CSS file - not a framework or anything you can't override. I say this because I've noticed many developers got stick with BS classes and became lazy "I-can't-write-CSS-code-anymore" coders [this not being your case of course!].

If it features something you need, go with Bootstrap classes - if not, go write your additional code in good ol' style.css.

To have best of both worlds, you may write your own declarations in LESS and recompile the whole thing upon your needs, minimizing server request as a bonus.

Text Progress Bar in the Console

With the great advices above I work out the progress bar.

However I would like to point out some shortcomings

Every time the progress bar is flushed, it will start on a new line
```
print('\r[{0}]{1}%'.format('#' * progress* 10, progress))  
```
like this:
[] 0%
[#]10%
[##]20%
[###]30%

2.The square bracket ']' and the percent number on the right side shift right as the '###' get longer.
3. An error will occur if the expression 'progress / 10' can not return an integer.

And the following code will fix the problem above.

def update_progress(progress, total):  
    print('\r[{0:10}]{1:>2}%'.format('#' * int(progress * 10 /total), progress), end='')

angular-cli server - how to proxy API requests to another server?

In case if someone is looking for multiple context entries to the same target or TypeScript based configuration.

proxy.conf.ts

const proxyConfig = [
  {
    context: ['/api/v1', '/api/v2],
    target: 'https://example.com',
    secure: true,
    changeOrigin: true
  },
  {
    context: ['**'], // Rest of other API call
    target: 'http://somethingelse.com',
    secure: false,
    changeOrigin: true
  }
];

module.exports = proxyConfig;

ng serve --proxy-config=./proxy.conf.ts -o

How do I configure modprobe to find my module?

I think the key is to copy the module to the standard paths.

Once that is done, modprobe only accepts the module name, so leave off the path and ".ko" extension.

git with development, staging and production branches

We do it differently. IMHO we do it in an easier way: in master we are working on the next major version.

Each larger feature gets its own branch (derived from master) and will be rebased (+ force pushed) on top of master regularly by the developer. Rebasing only works fine if a single developer works on this feature. If the feature is finished, it will be freshly rebased onto master and then the master fast-forwarded to the latest feature commit.

To avoid the rebasing/forced push one also can merge master changes regularly to the feature branch and if it's finished merge the feature branch into master (normal merge or squash merge). But IMHO this makes the feature branch less clear and makes it much more difficult to reorder/cleanup the commits.

If a new release is coming, we create a side-branch out of master, e.g. release-5 where only bugs get fixed.

In Python, how do you convert seconds since epoch to a `datetime` object?

For those that want it ISO 8601 compliant, since the other solutions do not have the T separator nor the time offset (except Meistro's answer):

from datetime import datetime, timezone
result = datetime.fromtimestamp(1463288494, timezone.utc).isoformat('T', 'microseconds')
print(result) # 2016-05-15T05:01:34.000000+00:00

Note, I use fromtimestamp because if I used utcfromtimestamp I would need to chain on .astimezone(...) anyway to get the offset.

If you don't want to go all the way to microseconds you can choose a different unit with the isoformat() method.

How to fix "set SameSite cookie to none" warning?

If you are experiencing the OP's problem where your cookies have been set using JavaScript - for example:

document.cookie = "my_cookie_name=my_cookie_value; expires=Thu, 11 Jun 2070 11:11:11 UTC; path=/";

you could instead use:

document.cookie = "my_cookie_name=my_cookie_value; expires=Thu, 11 Jun 2070 11:11:11 UTC; path=/; SameSite=None; Secure";

It worked for me. More info here.

How to bind WPF button to a command in ViewModelBase?

 <Grid >
    <Grid.ColumnDefinitions>
        <ColumnDefinition Width="*"/>
    </Grid.ColumnDefinitions>
    <Button Command="{Binding ClickCommand}" Width="100" Height="100" Content="wefwfwef"/>
</Grid>

the code behind for the window:

public partial class MainWindow : Window
{
    public MainWindow()
    {
        InitializeComponent();
        DataContext = new ViewModelBase();
    }
}

The ViewModel:

public class ViewModelBase
{
    private ICommand _clickCommand;
    public ICommand ClickCommand
    {
        get
        {
            return _clickCommand ?? (_clickCommand = new CommandHandler(() => MyAction(), ()=> CanExecute));
        }
    }
     public bool CanExecute
     {
        get
        {
            // check if executing is allowed, i.e., validate, check if a process is running, etc. 
            return true/false;
        }
     }

    public void MyAction()
    {

    }
}

Command Handler:

 public class CommandHandler : ICommand
{
    private Action _action;
    private Func<bool> _canExecute;

    /// <summary>
    /// Creates instance of the command handler
    /// </summary>
    /// <param name="action">Action to be executed by the command</param>
    /// <param name="canExecute">A bolean property to containing current permissions to execute the command</param>
    public CommandHandler(Action action, Func<bool> canExecute)
    {
        _action = action;
        _canExecute = canExecute;
    }

    /// <summary>
    /// Wires CanExecuteChanged event 
    /// </summary>
    public event EventHandler CanExecuteChanged
    {
        add { CommandManager.RequerySuggested += value; }
        remove { CommandManager.RequerySuggested -= value; }
    }

    /// <summary>
    /// Forcess checking if execute is allowed
    /// </summary>
    /// <param name="parameter"></param>
    /// <returns></returns>
    public bool CanExecute(object parameter)
    {
        return _canExecute.Invoke();
    }

    public void Execute(object parameter)
    {
        _action();
    }
}

I hope this will give you the idea.

IN Clause with NULL or IS NULL

Null refers to an absence of data. Null is formally defined as a value that is unavailable, unassigned, unknown or inapplicable (OCA Oracle Database 12c, SQL Fundamentals I Exam Guide, p87). So, you may not see records with columns containing null values when said columns are restricted using an "in" or "not in" clauses.

AngularJS- Login and Authentication in each route and controller

My solution breaks down in 3 parts: the state of the user is stored in a service, in the run method you watch when the route changes and you check if the user is allowed to access the requested page, in your main controller you watch if the state of the user change.

app.run(['$rootScope', '$location', 'Auth', function ($rootScope, $location, Auth) {
    $rootScope.$on('$routeChangeStart', function (event) {

        if (!Auth.isLoggedIn()) {
            console.log('DENY');
            event.preventDefault();
            $location.path('/login');
        }
        else {
            console.log('ALLOW');
            $location.path('/home');
        }
    });
}]);

You should create a service (I will name it Auth) which will handle the user object and have a method to know if the user is logged or not.

service:

 .factory('Auth', function(){
var user;

return{
    setUser : function(aUser){
        user = aUser;
    },
    isLoggedIn : function(){
        return(user)? user : false;
    }
  }
})

From your app.run, you should listen the $routeChangeStart event. When the route will change, it will check if the user is logged (the isLoggedIn method should handle it). It won't load the requested route if the user is not logged and it will redirect the user to the right page (in your case login).

The loginController should be used in your login page to handle login. It should just interract with the Auth service and set the user as logged or not.

loginController:

.controller('loginCtrl', [ '$scope', 'Auth', function ($scope, Auth) {
  //submit
  $scope.login = function () {
    // Ask to the server, do your job and THEN set the user

    Auth.setUser(user); //Update the state of the user in the app
  };
}])

From your main controller, you could listen if the user state change and react with a redirection.

.controller('mainCtrl', ['$scope', 'Auth', '$location', function ($scope, Auth, $location) {

  $scope.$watch(Auth.isLoggedIn, function (value, oldValue) {

    if(!value && oldValue) {
      console.log("Disconnect");
      $location.path('/login');
    }

    if(value) {
      console.log("Connect");
      //Do something when the user is connected
    }

  }, true);

Node.js Generate html

Although @yanick-rochon answer is correct, the simplest way to achieve your goal (if it's to serve a dynamically generated html) is:

var http = require('http');
http.createServer(function (req, res) {
  res.write('<html><head></head><body>');
  res.write('<p>Write your HTML content here</p>');
  res.end('</body></html>');
}).listen(1337);

This way when you browse at http://localhost:1337 you'll get your html page.

Hashmap with Streams in Java 8 Streams to collect value of Map

For your Q2, there are already answers to your question. For your Q1, and more generally when you know that the key's filtering should give a unique value, there's no need to use Streams at all.

Just use get or getOrDefault, i.e:

List<String> list1 = id1.getOrDefault(1, Collections.emptyList());

jQuery scroll to ID from different page

I would like to recommend using the scrollTo plugin

http://demos.flesler.com/jquery/scrollTo/

You can the set scrollto by jquery css selector.

$('html,body').scrollTo( $(target), 800 );

I have had great luck with the accuracy of this plugin and its methods, where other methods of achieving the same effect like using .offset() or .position() have failed to be cross browser for me in the past. Not saying you can't use such methods, I'm sure there is a way to do it cross browser, I've just found scrollTo to be more reliable.

How can I change the color of AlertDialog title and the color of the line under it

check this is useful for you...

public void setCustomTitle (View customTitleView)

you get detail from following link.

http://developer.android.com/reference/android/app/AlertDialog.Builder.html#setCustomTitle%28android.view.View%29

CustomDialog.java

Dialog alert = new Dialog(this);
    alert.requestWindowFeature(Window.FEATURE_NO_TITLE);
    alert.setContentView(R.layout.title);
    TextView msg = (TextView)alert.findViewById(R.id.textView1);
    msg.setText("Hello Friends.\nIP address : 111.111.1.111");
    alert.show();

title.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical" >

<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Set IP address"
    android:textColor="#ff0000"
    android:textAppearance="?android:attr/textAppearanceLarge" />

<ImageView 
    android:layout_width="fill_parent"
    android:layout_height="2dp"
    android:layout_marginTop="5dp"
    android:background="#00ff00"
    />
<TextView
    android:id="@+id/textView1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:textColor="#775500"
    android:textAppearance="?android:attr/textAppearanceLarge" />

enter image description here

jQuery UI Dialog window loaded within AJAX style jQuery UI Tabs

To avoid adding extra divs when clicking on the link multiple times, and avoid problems when using the script to display forms, you could try a variation of @jek's code.

$('a.ajax').live('click', function() {
    var url = this.href;
    var dialog = $("#dialog");
    if ($("#dialog").length == 0) {
        dialog = $('<div id="dialog" style="display:hidden"></div>').appendTo('body');
    } 

    // load remote content
    dialog.load(
            url,
            {},
            function(responseText, textStatus, XMLHttpRequest) {
                dialog.dialog();
            }
        );
    //prevent the browser to follow the link
    return false;
});`

Map and Reduce in .NET

Since I never can remember that LINQ calls it Where, Select and Aggregate instead of Filter, Map and Reduce so I created a few extension methods you can use:

IEnumerable<string> myStrings = new List<string>() { "1", "2", "3", "4", "5" };
IEnumerable<int> convertedToInts = myStrings.Map(s => int.Parse(s));
IEnumerable<int> filteredInts = convertedToInts.Filter(i => i <= 3); // Keep 1,2,3
int sumOfAllInts = filteredInts.Reduce((sum, i) => sum + i); // Sum up all ints
Assert.Equal(6, sumOfAllInts); // 1+2+3 is 6

Here are the 3 methods (from https://github.com/cs-util-com/cscore/blob/master/CsCore/PlainNetClassLib/src/Plugins/CsCore/com/csutil/collections/IEnumerableExtensions.cs ):

public static IEnumerable<R> Map<T, R>(this IEnumerable<T> self, Func<T, R> selector) {
    return self.Select(selector);
}

public static T Reduce<T>(this IEnumerable<T> self, Func<T, T, T> func) {
    return self.Aggregate(func);
}

public static IEnumerable<T> Filter<T>(this IEnumerable<T> self, Func<T, bool> predicate) {
    return self.Where(predicate);
}

Some more details from https://github.com/cs-util-com/cscore#ienumerable-extensions :

How to check if an Object is a Collection Type in Java?

Have you thinked about using instanceof ? Like, say

if(myObject instanceof Collection) {
     Collection myCollection = (Collection) myObject;

Although not that pure OOP style, it is however largely used for so-called "type escalation".

How do I stop Notepad++ from showing autocomplete for all words in the file

Notepad++ provides 2 types of features:

Auto-completion that read the open file and provide suggestion of words and/or functions within the file
Suggestion with the arguments of functions (specific to the language)

Based on what you write, it seems what you want is auto-completion on function only + suggestion on arguments.

To do that, you just need to change a setting.

Go to Settings > Preferences... > Auto-completion
Check Enable Auto-completion on each input
Select Function completion and not Word completion
Check Function parameter hint on input (if you have this option)

On version 6.5.5 of Notepad++, I have this setting settings

Some documentation about auto-completion is available in Notepad++ Wiki.

Jenkins Host key verification failed

Make sure we are not editing any of the default sshd_config properties to skip the error
Host Verification Failed - Definitely a missing entry of hostname in known_hosts file
Login to the server where the process is failing and do the following:
1. Sudo to the user running the process
2. ssh-copy-id destinationuser@destinationhostname
3. It will prompt like this for the first time, say yes and it will also ask password for the first time:
```
The authenticity of host 'sample.org (205.214.640.91)' can't be established.
RSA key fingerprint is 97:8c:1b:f2:6f:14:6b:5c:3b:ec:aa:46:46:74:7c:40.
Are you sure you want to continue connecting (yes/no)? *yes*
```
  Password prompt ? give password
4. Now from the server where process is running, do ssh destinationuser@destinationhostname. It should login without a password.
  
  Note: Do not change the default permissions of files in the user's .ssh directory, you will end up with different issues

Escape quotes in JavaScript

" would work in this particular case, as suggested before me, because of the HTML context.

However, if you want your JavaScript code to be independently escaped for any context, you could opt for the native JavaScript encoding:
' becomes \x27
" becomes \x22

So your onclick would become:
DoEdit('Preliminary Assessment \x22Mini\x22');

This would work for example also when passing a JavaScript string as a parameter to another JavaScript method (alert() is an easy test method for this).

I am referring you to the duplicate Stack Overflow question, How do I escape a string inside JavaScript code inside an onClick handler?.

javascript change background color on click

If you want change background color on button click, you should use JavaScript function and change a style in the HTML page.

function chBackcolor(color) {
   document.body.style.background = color;
}

It is a function in JavaScript for change color, and you will be call this function in your event, for example :

<input type="button" onclick="chBackcolor('red');">

I recommend to use jQuery for this.

If you want it only for some seconds, you can use setTimeout function:

window.setTimeout("chBackColor()",10000);

Eclipse comment/uncomment shortcut?

Ctrl+/ to toggle "//" comments and Ctrl+Shift/ to toggle "/* */" comments. At least for Java, anyway - other tooling may have different shortcuts.

Ctrl+\ will remove a block of either comment, but won't add comments.

EDIT: It's Ctrl on a PC, but on a Mac the shortcuts may all be Cmd instead. I don't have a Mac myself, so can't easily check

How to connect PHP with Microsoft Access database

If you are just getting started with a new project then I would suggest that you use PDO instead of the old odbc_exec() approach. Here is a simple example:

<?php
$bits = 8 * PHP_INT_SIZE;
echo "(Info: This script is running as $bits-bit.)\r\n\r\n";

$connStr = 
        'odbc:Driver={Microsoft Access Driver (*.mdb, *.accdb)};' .
        'Dbq=C:\\Users\\Gord\\Desktop\\foo.accdb;';

$dbh = new PDO($connStr);
$dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

$sql = 
        "SELECT AgentName FROM Agents " .
        "WHERE ID < ? AND AgentName <> ?";
$sth = $dbh->prepare($sql);

// query parameter value(s)
$params = array(
        5,
        'Homer'
        );

$sth->execute($params);

while ($row = $sth->fetch()) {
    echo $row['AgentName'] . "\r\n";
}

NOTE: The above approach is sufficient if you do not need to support Unicode characters above U+00FF. If you do need to support such characters then neither PDO_ODBC nor the old odbc_ functions will work; you'll need to use the solution described in this answer.

Truncating a table in a stored procedure

try the below code

execute immediate 'truncate table tablename' ;

What is the difference between ng-if and ng-show/ng-hide

The ng-if directive removes the content from the page and ng-show/ng-hide uses the CSS display property to hide content.

This is useful in case you want to use :first-child and :last-child pseudo selectors to style.

How to get domain root url in Laravel 4?

You also may test any of these:

Request::server ("SERVER_NAME")
Request::server ("HTTP_HOST")

It seems better than making any treatment of

Request::root()

All right.

How to define multiple CSS attributes in jQuery?

Agree with redsquare however it is worth mentioning that if you have a two word property like text-align you would do this:

$("#message").css({ width: '30px', height: '10px', 'text-align': 'center'});

How to add /usr/local/bin in $PATH on Mac

In MAC OS Catalina, this are the steps that worked for me, all the above solutions did help but didn't solve my problem.

check node --version, still the old one in use.
cd ~/
atom .bash_profile
Remove the $PATH pointing to old node version, in my case it was /usr/local/bin/node/@node8
Add & save this to $PATH instead "export PATH=$PATH:/usr/local/git/bin:/usr/local/bin"
Close all applications using node (terminal, simulator, browser expo etc)
restart terminal and check node --version

SQL Server "AFTER INSERT" trigger doesn't see the just-inserted row

Is it possible the INSERT is valid, but that a separate UPDATE is done afterwards that is invalid but wouldn't fire the trigger?

Use Async/Await with Axios in React.js

Async/Await with axios 

  useEffect(() => {     
    const getData = async () => {  
      await axios.get('your_url')  
      .then(res => {  
        console.log(res)  
      })  
      .catch(err => {  
        console.log(err)  
      });  
    }  
    getData()  
  }, [])

How to output HTML from JSP <%! ... %> block?

You can do something like this:

<%

out.print("<p>Hey!</p>");    
out.print("<p>How are you?</p>");

%>

How to create named and latest tag in Docker?

Here is my bash script

docker build -t ${IMAGE}:${VERSION} .
docker tag ${IMAGE}:${VERSION} ${IMAGE}:latest

You can then remove untagged images if you rebuilt the same version with

docker rmi $(docker images | grep "^<none>" | awk "{print $3}")

link

docker rmi $(docker images | grep "^<none>" | tr -s " " | cut -d' ' -f3 | tr '\n' ' ')

Clean up commands:

Docker 1.13 introduces clean-up commands. To remove all unused containers, images, networks and volumes:

docker system prune

or individually:

docker container prune
docker image prune
docker network prune
docker volume prune

How do I POST form data with UTF-8 encoding by using curl?

You CAN use UTF-8 in the POST request, all you need is to specify the charset in your request.

You should use this request:

curl -X POST -H "Content-Type: application/x-www-form-urlencoded; charset=utf-8" --data-ascii "content=derinhält&date=asdf" http://myserverurl.com/api/v1/somemethod

Connecting to SQL Server Express - What is my server name?

This was provided after installation of Sql Express 2019

Server=localhost\SQLEXPRESS;Database=master;Trusted_Connection=True;

So just use 'localhost\SQLEXPRESS' in server name and windows authentication worked for me.

Swift do-try-catch syntax

I suspect this just hasn’t been implemented properly yet. The Swift Programming Guide definitely seems to imply that the compiler can infer exhaustive matches 'like a switch statement'. It doesn’t make any mention of needing a general catch in order to be exhaustive.

You'll also notice that the error is on the try line, not the end of the block, i.e. at some point the compiler will be able to pinpoint which try statement in the block has unhandled exception types.

The documentation is a bit ambiguous though. I’ve skimmed through the ‘What’s new in Swift’ video and couldn’t find any clues; I’ll keep trying.

Update:

We’re now up to Beta 3 with no hint of ErrorType inference. I now believe if this was ever planned (and I still think it was at some point), the dynamic dispatch on protocol extensions probably killed it off.

Beta 4 Update:

Xcode 7b4 added doc comment support for Throws:, which “should be used to document what errors can be thrown and why”. I guess this at least provides some mechanism to communicate errors to API consumers. Who needs a type system when you have documentation!

Another update:

After spending some time hoping for automatic ErrorType inference, and working out what the limitations would be of that model, I’ve changed my mind - this is what I hope Apple implements instead. Essentially:

// allow us to do this:
func myFunction() throws -> Int

// or this:
func myFunction() throws CustomError -> Int

// but not this:
func myFunction() throws CustomErrorOne, CustomErrorTwo -> Int

Yet Another Update

Apple’s error handling rationale is now available here. There have also been some interesting discussions on the swift-evolution mailing list. Essentially, John McCall is opposed to typed errors because he believes most libraries will end up including a generic error case anyway, and that typed errors are unlikely to add much to the code apart from boilerplate (he used the term 'aspirational bluff'). Chris Lattner said he’s open to typed errors in Swift 3 if it can work with the resilience model.

Spring not autowiring in unit tests with JUnit

You need to use the Spring JUnit runner in order to wire in Spring beans from your context. The code below assumes that you have a application context called testContest.xml available on the test classpath.

import org.hibernate.SessionFactory;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.transaction.annotation.Transactional;

import java.sql.SQLException;

import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.startsWith;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = {"classpath*:**/testContext.xml"})
@Transactional
public class someDaoTest {

    @Autowired
    protected SessionFactory sessionFactory;

    @Test
    public void testDBSourceIsCorrect() throws SQLException {
        String databaseProductName = sessionFactory.getCurrentSession()
                .connection()
                .getMetaData()
                .getDatabaseProductName();
        assertThat("Test container is pointing at the wrong DB.", databaseProductName, startsWith("HSQL"));
    }
}

Note: This works with Spring 2.5.2 and Hibernate 3.6.5

How do I get an apk file from an Android device?

As said above, you can get the apk by using the pull command in adb.

Since, you are talking about your installed applications, go ahead and look in the /data/app directory of your Android filesystem. You will find the APK's there.

Then use the adb command - adb pull /data/data/appname.apk

Where do I put image files, css, js, etc. in Codeigniter?

you can put the css folder inside the assest folder(you name it any name) in the directory of your project as:

- ci_app
- application 
- views      
- assets 
  - css 
    - style.css

... when you want to load that file in a page, you can use base_url()function as this way: <head> <link rel='stylesheet' href='<?php echo base_url();?>assets/css/style.css'> </head> and you are sure to add base_url of your project in the config.php file as this:

$config['base_url'] = 'http://localhost/ci_app';

how to have two headings on the same line in html

The Css vertical-align property should help you out here:

vertical-align: bottom;

is what you need for your smaller header :)

Vertical-Align

Permission denied (publickey,keyboard-interactive)

The server first tries to authenticate you by public key. That doesn't work (I guess you haven't set one up), so it then falls back to 'keyboard-interactive'. It should then ask you for a password, which presumably you're not getting right. Did you see a password prompt?

Returning JSON object as response in Spring Boot

use ResponseEntity<ResponseBean>

Here you can use ResponseBean or Any java bean as you like to return your api response and it is the best practice. I have used Enum for response. it will return status code and status message of API.

@GetMapping(path = "/login")
public ResponseEntity<ServiceStatus> restApiExample(HttpServletRequest request,
            HttpServletResponse response) {
        String username = request.getParameter("username");
        String password = request.getParameter("password");

        loginService.login(username, password, request);
        return new ResponseEntity<ServiceStatus>(ServiceStatus.LOGIN_SUCCESS,
                HttpStatus.ACCEPTED);
    }

for response ServiceStatus or(ResponseBody)

    public enum ServiceStatus {

    LOGIN_SUCCESS(0, "Login success"),

    private final int id;
    private final String message;

    //Enum constructor
    ServiceStatus(int id, String message) {
        this.id = id;
        this.message = message;
    }

    public int getId() {
        return id;
    }

    public String getMessage() {
        return message;
    }
}

Spring REST API should have below key in response

Status Code
Message

you will get final response below

{

   "StatusCode" : "0",

   "Message":"Login success"

}

you can use ResponseBody(java POJO, ENUM,etc..) as per your requirement.

Java reflection: how to get field value from an object, not knowing its class

There is one more way, i got the same situation in my project. i solved this way

List<Object[]> list = HQL.list();

In above hibernate query language i know at which place what are my objects so what i did is :

for(Object[] obj : list){
String val = String.valueOf(obj[1]);
int code =Integer.parseint(String.valueof(obj[0]));
}

this way you can get the mixed objects with ease, but you should know in advance at which place what value you are getting or you can just check by printing the values to know. sorry for the bad english I hope this help

How to know if a Fragment is Visible?

Try this if you have only one Fragment

if (getSupportFragmentManager().getBackStackEntryCount() == 0) {
                    //TODO: Your Code Here
                }

What do "branch", "tag" and "trunk" mean in Subversion repositories?

The trunk is the development line that holds the latest source code and features. It should have the latest bug fixes in it as well as the latest features added to the project.

The branches are usually used to do something away from the trunk (or other development line) that would otherwise break the build. New features are often built in a branch and then merged back into the trunk. Branches often contain code that are not necessarily approved for the development line it branched from. For example, a programmer could try an optimization on something in a branch and only merge back in the development line once the optimization is satisfactory.

The tags are snapshots of the repository at a particular time. No development should occur on these. They are most often used to take a copy of what was released to a client so that you can easily have access to what a client is using.

Here's a link to a very good guide to repositories:

Source Control HOWTO

The articles in Wikipedia are also worth reading.

Typescript Date Type?

Every class or interface can be used as a type in TypeScript.

 const date = new Date();

will already know about the date type definition as Date is an internal TypeScript object referenced by the DateConstructor interface.

And for the constructor you used, it is defined as:

interface DateConstructor {
    new(): Date;
    ...
}

To make it more explicit, you can use:

 const date: Date = new Date();

You might be missing the type definitions though, the Date is coming for my example from the ES6 lib, and in my tsconfig.json I have defined:

"compilerOptions": {
    "target": "ES6",
    "lib": [
        "es6",
        "dom"
    ],

You might adapt these settings to target your wanted version of JavaScript.

The Date is by the way an Interface from lib.es6.d.ts:

/** Enables basic storage and retrieval of dates and times. */
interface Date {
    /** Returns a string representation of a date. The format of the string depends on the locale. */
    toString(): string;
    /** Returns a date as a string value. */
    toDateString(): string;
    /** Returns a time as a string value. */
    toTimeString(): string;
    /** Returns a value as a string value appropriate to the host environment's current locale. */
    toLocaleString(): string;
    /** Returns a date as a string value appropriate to the host environment's current locale. */
    toLocaleDateString(): string;
    /** Returns a time as a string value appropriate to the host environment's current locale. */
    toLocaleTimeString(): string;
    /** Returns the stored time value in milliseconds since midnight, January 1, 1970 UTC. */
    valueOf(): number;
    /** Gets the time value in milliseconds. */
    getTime(): number;
    /** Gets the year, using local time. */
    getFullYear(): number;
    /** Gets the year using Universal Coordinated Time (UTC). */
    getUTCFullYear(): number;
    /** Gets the month, using local time. */
    getMonth(): number;
    /** Gets the month of a Date object using Universal Coordinated Time (UTC). */
    getUTCMonth(): number;
    /** Gets the day-of-the-month, using local time. */
    getDate(): number;
    /** Gets the day-of-the-month, using Universal Coordinated Time (UTC). */
    getUTCDate(): number;
    /** Gets the day of the week, using local time. */
    getDay(): number;
    /** Gets the day of the week using Universal Coordinated Time (UTC). */
    getUTCDay(): number;
    /** Gets the hours in a date, using local time. */
    getHours(): number;
    /** Gets the hours value in a Date object using Universal Coordinated Time (UTC). */
    getUTCHours(): number;
    /** Gets the minutes of a Date object, using local time. */
    getMinutes(): number;
    /** Gets the minutes of a Date object using Universal Coordinated Time (UTC). */
    getUTCMinutes(): number;
    /** Gets the seconds of a Date object, using local time. */
    getSeconds(): number;
    /** Gets the seconds of a Date object using Universal Coordinated Time (UTC). */
    getUTCSeconds(): number;
    /** Gets the milliseconds of a Date, using local time. */
    getMilliseconds(): number;
    /** Gets the milliseconds of a Date object using Universal Coordinated Time (UTC). */
    getUTCMilliseconds(): number;
    /** Gets the difference in minutes between the time on the local computer and Universal Coordinated Time (UTC). */
    getTimezoneOffset(): number;
    /**
      * Sets the date and time value in the Date object.
      * @param time A numeric value representing the number of elapsed milliseconds since midnight, January 1, 1970 GMT.
      */
    setTime(time: number): number;
    /**
      * Sets the milliseconds value in the Date object using local time.
      * @param ms A numeric value equal to the millisecond value.
      */
    setMilliseconds(ms: number): number;
    /**
      * Sets the milliseconds value in the Date object using Universal Coordinated Time (UTC).
      * @param ms A numeric value equal to the millisecond value.
      */
    setUTCMilliseconds(ms: number): number;

    /**
      * Sets the seconds value in the Date object using local time.
      * @param sec A numeric value equal to the seconds value.
      * @param ms A numeric value equal to the milliseconds value.
      */
    setSeconds(sec: number, ms?: number): number;
    /**
      * Sets the seconds value in the Date object using Universal Coordinated Time (UTC).
      * @param sec A numeric value equal to the seconds value.
      * @param ms A numeric value equal to the milliseconds value.
      */
    setUTCSeconds(sec: number, ms?: number): number;
    /**
      * Sets the minutes value in the Date object using local time.
      * @param min A numeric value equal to the minutes value.
      * @param sec A numeric value equal to the seconds value.
      * @param ms A numeric value equal to the milliseconds value.
      */
    setMinutes(min: number, sec?: number, ms?: number): number;
    /**
      * Sets the minutes value in the Date object using Universal Coordinated Time (UTC).
      * @param min A numeric value equal to the minutes value.
      * @param sec A numeric value equal to the seconds value.
      * @param ms A numeric value equal to the milliseconds value.
      */
    setUTCMinutes(min: number, sec?: number, ms?: number): number;
    /**
      * Sets the hour value in the Date object using local time.
      * @param hours A numeric value equal to the hours value.
      * @param min A numeric value equal to the minutes value.
      * @param sec A numeric value equal to the seconds value.
      * @param ms A numeric value equal to the milliseconds value.
      */
    setHours(hours: number, min?: number, sec?: number, ms?: number): number;
    /**
      * Sets the hours value in the Date object using Universal Coordinated Time (UTC).
      * @param hours A numeric value equal to the hours value.
      * @param min A numeric value equal to the minutes value.
      * @param sec A numeric value equal to the seconds value.
      * @param ms A numeric value equal to the milliseconds value.
      */
    setUTCHours(hours: number, min?: number, sec?: number, ms?: number): number;
    /**
      * Sets the numeric day-of-the-month value of the Date object using local time.
      * @param date A numeric value equal to the day of the month.
      */
    setDate(date: number): number;
    /**
      * Sets the numeric day of the month in the Date object using Universal Coordinated Time (UTC).
      * @param date A numeric value equal to the day of the month.
      */
    setUTCDate(date: number): number;
    /**
      * Sets the month value in the Date object using local time.
      * @param month A numeric value equal to the month. The value for January is 0, and other month values follow consecutively.
      * @param date A numeric value representing the day of the month. If this value is not supplied, the value from a call to the getDate method is used.
      */
    setMonth(month: number, date?: number): number;
    /**
      * Sets the month value in the Date object using Universal Coordinated Time (UTC).
      * @param month A numeric value equal to the month. The value for January is 0, and other month values follow consecutively.
      * @param date A numeric value representing the day of the month. If it is not supplied, the value from a call to the getUTCDate method is used.
      */
    setUTCMonth(month: number, date?: number): number;
    /**
      * Sets the year of the Date object using local time.
      * @param year A numeric value for the year.
      * @param month A zero-based numeric value for the month (0 for January, 11 for December). Must be specified if numDate is specified.
      * @param date A numeric value equal for the day of the month.
      */
    setFullYear(year: number, month?: number, date?: number): number;
    /**
      * Sets the year value in the Date object using Universal Coordinated Time (UTC).
      * @param year A numeric value equal to the year.
      * @param month A numeric value equal to the month. The value for January is 0, and other month values follow consecutively. Must be supplied if numDate is supplied.
      * @param date A numeric value equal to the day of the month.
      */
    setUTCFullYear(year: number, month?: number, date?: number): number;
    /** Returns a date converted to a string using Universal Coordinated Time (UTC). */
    toUTCString(): string;
    /** Returns a date as a string value in ISO format. */
    toISOString(): string;
    /** Used by the JSON.stringify method to enable the transformation of an object's data for JavaScript Object Notation (JSON) serialization. */
    toJSON(key?: any): string;
}

What does --net=host option in Docker command really do?

you can create your own new network like --net="anyname"
this is done to isolate the services from different container.
suppose the same service are running in different containers, but the port mapping remains same, the first container starts well , but the same service from second container will fail. so to avoid this, either change the port mappings or create a network.

Definition of "downstream" and "upstream"

In terms of source control, you're "downstream" when you copy (clone, checkout, etc) from a repository. Information flowed "downstream" to you.

When you make changes, you usually want to send them back "upstream" so they make it into that repository so that everyone pulling from the same source is working with all the same changes. This is mostly a social issue of how everyone can coordinate their work rather than a technical requirement of source control. You want to get your changes into the main project so you're not tracking divergent lines of development.

Sometimes you'll read about package or release managers (the people, not the tool) talking about submitting changes to "upstream". That usually means they had to adjust the original sources so they could create a package for their system. They don't want to keep making those changes, so if they send them "upstream" to the original source, they shouldn't have to deal with the same issue in the next release.

Add new row to dataframe, at specific row-index, not appended?

Here's a solution that avoids the (often slow) rbind call:

existingDF <- as.data.frame(matrix(seq(20),nrow=5,ncol=4))
r <- 3
newrow <- seq(4)
insertRow <- function(existingDF, newrow, r) {
  existingDF[seq(r+1,nrow(existingDF)+1),] <- existingDF[seq(r,nrow(existingDF)),]
  existingDF[r,] <- newrow
  existingDF
}

> insertRow(existingDF, newrow, r)
  V1 V2 V3 V4
1  1  6 11 16
2  2  7 12 17
3  1  2  3  4
4  3  8 13 18
5  4  9 14 19
6  5 10 15 20

If speed is less important than clarity, then @Simon's solution works well:

existingDF <- rbind(existingDF[1:r,],newrow,existingDF[-(1:r),])
> existingDF
   V1 V2 V3 V4
1   1  6 11 16
2   2  7 12 17
3   3  8 13 18
4   1  2  3  4
41  4  9 14 19
5   5 10 15 20

(Note we index r differently).

And finally, benchmarks:

library(microbenchmark)
microbenchmark(
  rbind(existingDF[1:r,],newrow,existingDF[-(1:r),]),
  insertRow(existingDF,newrow,r)
)

Unit: microseconds
                                                    expr     min       lq   median       uq       max
1                       insertRow(existingDF, newrow, r) 660.131 678.3675 695.5515 725.2775   928.299
2 rbind(existingDF[1:r, ], newrow, existingDF[-(1:r), ]) 801.161 831.7730 854.6320 881.6560 10641.417

Benchmarks

As @MatthewDowle always points out to me, benchmarks need to be examined for the scaling as the size of the problem increases. Here we go then:

benchmarkInsertionSolutions <- function(nrow=5,ncol=4) {
  existingDF <- as.data.frame(matrix(seq(nrow*ncol),nrow=nrow,ncol=ncol))
  r <- 3 # Row to insert into
  newrow <- seq(ncol)
  m <- microbenchmark(
   rbind(existingDF[1:r,],newrow,existingDF[-(1:r),]),
   insertRow(existingDF,newrow,r),
   insertRow2(existingDF,newrow,r)
  )
  # Now return the median times
  mediansBy <- by(m$time,m$expr, FUN=median)
  res <- as.numeric(mediansBy)
  names(res) <- names(mediansBy)
  res
}
nrows <- 5*10^(0:5)
benchmarks <- sapply(nrows,benchmarkInsertionSolutions)
colnames(benchmarks) <- as.character(nrows)
ggplot( melt(benchmarks), aes(x=Var2,y=value,colour=Var1) ) + geom_line() + scale_x_log10() + scale_y_log10()

@Roland's solution scales quite well, even with the call to rbind:

                                                              5       50     500    5000    50000     5e+05
insertRow2(existingDF, newrow, r)                      549861.5 579579.0  789452 2512926 46994560 414790214
insertRow(existingDF, newrow, r)                       895401.0 905318.5 1168201 2603926 39765358 392904851
rbind(existingDF[1:r, ], newrow, existingDF[-(1:r), ]) 787218.0 814979.0 1263886 5591880 63351247 829650894

Plotted on a linear scale:

linear

And a log-log scale:

log-log

How can I use JQuery to post JSON data?

You're passing an object, not a JSON string. When you pass an object, jQuery uses $.param to serialize the object into name-value pairs.

If you pass the data as a string, it won't be serialized:

$.ajax({
    type: 'POST',
    url: '/form/',
    data: '{"name":"jonas"}', // or JSON.stringify ({name: 'jonas'}),
    success: function(data) { alert('data: ' + data); },
    contentType: "application/json",
    dataType: 'json'
});

ssh connection refused on Raspberry Pi

I think pi has ssh server enabled by default. Mine have always worked out of the box. Depends which operating system version maybe.

Most of the time when it fails for me it is because the ip address has been changed. Perhaps you are pinging something else now? Also sometimes they just refuse to connect and need a restart.

Converting Chart.js canvas chart to image using .toDataUrl() results in blank image

You should use the Chartjs API function toBase64Image() instead and call it after the animation is complete. Therefore:

var pieChart, URI;

var options = {
    animation : {
        onComplete : function(){    
            URI = pieChart.toBase64Image();
        }
    }
};

var content = {
    type: 'pie', //whatever, not relevant for this example
    data: {
        datasets: dataset //whatever, not relevant for this example
    },
    options: options        
};    

pieChart = new Chart(pieChart, content);

Example

You can check this example and run it

_x000D_

var chart = new Chart(ctx, {_x000D_
   type: 'bar',_x000D_
   data: {_x000D_
      labels: ['Standing costs', 'Running costs'], // responsible for how many bars are gonna show on the chart_x000D_
      // create 12 datasets, since we have 12 items_x000D_
      // data[0] = labels[0] (data for first bar - 'Standing costs') | data[1] = labels[1] (data for second bar - 'Running costs')_x000D_
      // put 0, if there is no data for the particular bar_x000D_
      datasets: [{_x000D_
         label: 'Washing and cleaning',_x000D_
         data: [0, 8],_x000D_
         backgroundColor: '#22aa99'_x000D_
      }, {_x000D_
         label: 'Traffic tickets',_x000D_
         data: [0, 2],_x000D_
         backgroundColor: '#994499'_x000D_
      }, {_x000D_
         label: 'Tolls',_x000D_
         data: [0, 1],_x000D_
         backgroundColor: '#316395'_x000D_
      }, {_x000D_
         label: 'Parking',_x000D_
         data: [5, 2],_x000D_
         backgroundColor: '#b82e2e'_x000D_
      }, {_x000D_
         label: 'Car tax',_x000D_
         data: [0, 1],_x000D_
         backgroundColor: '#66aa00'_x000D_
      }, {_x000D_
         label: 'Repairs and improvements',_x000D_
         data: [0, 2],_x000D_
         backgroundColor: '#dd4477'_x000D_
      }, {_x000D_
         label: 'Maintenance',_x000D_
         data: [6, 1],_x000D_
         backgroundColor: '#0099c6'_x000D_
      }, {_x000D_
         label: 'Inspection',_x000D_
         data: [0, 2],_x000D_
         backgroundColor: '#990099'_x000D_
      }, {_x000D_
         label: 'Loan interest',_x000D_
         data: [0, 3],_x000D_
         backgroundColor: '#109618'_x000D_
      }, {_x000D_
         label: 'Depreciation of the vehicle',_x000D_
         data: [0, 2],_x000D_
         backgroundColor: '#109618'_x000D_
      }, {_x000D_
         label: 'Fuel',_x000D_
         data: [0, 1],_x000D_
         backgroundColor: '#dc3912'_x000D_
      }, {_x000D_
         label: 'Insurance and Breakdown cover',_x000D_
         data: [4, 0],_x000D_
         backgroundColor: '#3366cc'_x000D_
      }]_x000D_
   },_x000D_
   options: {_x000D_
      responsive: false,_x000D_
      legend: {_x000D_
         position: 'right' // place legend on the right side of chart_x000D_
      },_x000D_
      scales: {_x000D_
         xAxes: [{_x000D_
            stacked: true // this should be set to make the bars stacked_x000D_
         }],_x000D_
         yAxes: [{_x000D_
            stacked: true // this also.._x000D_
         }]_x000D_
      },_x000D_
      animation : {_x000D_
         onComplete : done_x000D_
      }      _x000D_
   }_x000D_
});_x000D_
_x000D_
function done(){_x000D_
    alert(chart.toBase64Image());_x000D_
}

_x000D_

<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.6.0/Chart.min.js"></script>_x000D_
<canvas id="ctx" width="700"></canvas>

_x000D_

"Too many values to unpack" Exception

That exception means that you are trying to unpack a tuple, but the tuple has too many values with respect to the number of target variables. For example: this work, and prints 1, then 2, then 3

def returnATupleWithThreeValues():
    return (1,2,3)
a,b,c = returnATupleWithThreeValues()
print a
print b
print c

But this raises your error

def returnATupleWithThreeValues():
    return (1,2,3)
a,b = returnATupleWithThreeValues()
print a
print b

raises

Traceback (most recent call last):
  File "c.py", line 3, in ?
    a,b = returnATupleWithThreeValues()
ValueError: too many values to unpack

Now, the reason why this happens in your case, I don't know, but maybe this answer will point you in the right direction.

Why can't overriding methods throw exceptions broader than the overridden method?

It means that if a method declares to throw a given exception, the overriding method in a subclass can only declare to throw that exception or its subclass. For example:

class A {
   public void foo() throws IOException {..}
}

class B extends A {
   @Override
   public void foo() throws SocketException {..} // allowed

   @Override
   public void foo() throws SQLException {..} // NOT allowed
}

SocketException extends IOException, but SQLException does not.

This is because of polymorphism:

A a = new B();
try {
    a.foo();
} catch (IOException ex) {
    // forced to catch this by the compiler
}

If B had decided to throw SQLException, then the compiler could not force you to catch it, because you are referring to the instance of B by its superclass - A. On the other hand, any subclass of IOException will be handled by clauses (catch or throws) that handle IOException

The rule that you need to be able to refer to objects by their superclass is the Liskov Substitution Principle.

Since unchecked exceptions can be thrown anywhere then they are not subject to this rule. You can add an unchecked exception to the throws clause as a form of documentation if you want, but the compiler doesn't enforce anything about it.

How to remove indentation from an unordered list item?

Can you provide a link ? thanks I can take a look Most likely your css selector isnt strong enough or can you try

padding:0!important;

Calculate the date yesterday in JavaScript

I use moment library, it is very flexible and easy to use.

In your case:

let yesterday = moment().subtract(1, 'day').toDate();

How to alias a table in Laravel Eloquent queries (or using Query Builder)?

To use aliases on eloquent models modify your code like this:

Item
    ::from( 'items as items_alias' )
    ->join( 'attachments as att', DB::raw( 'att.item_id' ), '=', DB::raw( 'items_alias.id' ) )
    ->select( DB::raw( 'items_alias.*' ) )
    ->get();

This will automatically add table prefix to table names and returns an instance of Items model. not a bare query result. Adding DB::raw prevents laravel from adding table prefixes to aliases.

Change window location Jquery

You can set the value of document.location.href for this purpose. It points to the current URL. jQuery is not required to do this.

How to fix warning from date() in PHP"

You could also use this:

ini_alter('date.timezone','Asia/Calcutta');

You should call this before calling any date function. It accepts the key as the first parameter to alter PHP settings during runtime and the second parameter is the value.

I had done these things before I figured out this:

Changed the PHP.timezone to "Asia/Calcutta" - but did not work
Changed the lat and long parameters in the ini - did not work
Used date_default_timezone_set("Asia/Calcutta"); - did not work
Used ini_alter() - IT WORKED
Commented date_default_timezone_set("Asia/Calcutta"); - IT WORKED
Reverted the changes made to the PHP.ini - IT WORKED

For me the init_alter() method got it all working.

I am running Apache 2 (pre-installed), PHP 5.3 on OSX mountain lion

How do I center an SVG in a div?

Flexbox is another approach: add

_x000D_

.container {
  display: flex;
  justify-content: center;
}

_x000D_

And add the .container class to the div which contains your svg.

The use of Swift 3 @objc inference in Swift 4 mode is deprecated?

The use of Swift 3 @objc inference in Swift 4 mode is deprecated?

use func call @objc

func call(){

foo()

}

@objc func foo() {

}

Error 1053 the service did not respond to the start or control request in a timely fashion

open the services window as administrator,Then try to start the service.That worked for me.

How to create JNDI context in Spring Boot with Embedded Tomcat Container

After all i got the answer thanks to wikisona, first the beans:

@Bean
public TomcatEmbeddedServletContainerFactory tomcatFactory() {
    return new TomcatEmbeddedServletContainerFactory() {

        @Override
        protected TomcatEmbeddedServletContainer getTomcatEmbeddedServletContainer(
                Tomcat tomcat) {
            tomcat.enableNaming();
            return super.getTomcatEmbeddedServletContainer(tomcat);
        }

        @Override
        protected void postProcessContext(Context context) {
            ContextResource resource = new ContextResource();
            resource.setName("jdbc/myDataSource");
            resource.setType(DataSource.class.getName());
            resource.setProperty("driverClassName", "your.db.Driver");
            resource.setProperty("url", "jdbc:yourDb");

            context.getNamingResources().addResource(resource);
        }
    };
}

@Bean(destroyMethod="")
public DataSource jndiDataSource() throws IllegalArgumentException, NamingException {
    JndiObjectFactoryBean bean = new JndiObjectFactoryBean();
    bean.setJndiName("java:comp/env/jdbc/myDataSource");
    bean.setProxyInterface(DataSource.class);
    bean.setLookupOnStartup(false);
    bean.afterPropertiesSet();
    return (DataSource)bean.getObject();
}

the full code it's here: https://github.com/wilkinsona/spring-boot-sample-tomcat-jndi

JSON.parse unexpected token s

valid json string must have double quote.

JSON.parse({"u1":1000,"u2":1100})       // will be ok

no quote cause error

JSON.parse({u1:1000,u2:1100})    
// error Uncaught SyntaxError: Unexpected token u in JSON at position 2

single quote cause error

JSON.parse({'u1':1000,'u2':1100})    
// error Uncaught SyntaxError: Unexpected token u in JSON at position 2

You must valid json string at https://jsonlint.com

How to center a navigation bar with CSS or HTML?

You could also use float and inline-block to center your nav like the following:

nav li {
   float: left;
}
nav {
   display: inline-block;
}

how to add picasso library in android studio

Dependency

dependencies {

   implementation 'com.squareup.picasso:picasso:2.71828'

}

//Java Code for Image Loading into imageView

Picasso.get().load(werURL).into(imageView);

Convert time in HH:MM:SS format to seconds only?

function time2sec($time) {
    $durations = array_reverse(explode(':', $item->duration));
    $second = array_shift($durations);
    foreach ($durations as $duration) {
        $second += (60 * $duration);
    }
    return $second;
}
echo time2sec('4:52'); // 292
echo time2sec('2:01:42'); // 7302

"Insert if not exists" statement in SQLite

If you have a table called memos that has two columns id and text you should be able to do like this:

INSERT INTO memos(id,text) 
SELECT 5, 'text to insert' 
WHERE NOT EXISTS(SELECT 1 FROM memos WHERE id = 5 AND text = 'text to insert');

If a record already contains a row where text is equal to 'text to insert' and id is equal to 5, then the insert operation will be ignored.

I don't know if this will work for your particular query, but perhaps it give you a hint on how to proceed.

I would advice that you instead design your table so that no duplicates are allowed as explained in @CLs answer below.

How to parse JSON to receive a Date object in JavaScript?

I know this is a very old thread but I wish to post this to help those who bump into this like I did.

if you don't care about using a 3rd party script, you can use moment,js Then you can use .format() to format it to anything you want it to.

POSTing JsonObject With HttpClient From Web API

Depending on your .NET version you could also use HttpClientExtensions.PostAsJsonAsync method.

https://msdn.microsoft.com/en-us/library/system.net.http.httpclientextensions.postasjsonasync.aspx

How to add "Maven Managed Dependencies" library in build path eclipse?

If you use an eclipse plugin to do your maven tasks (there are 2 of them : M2ecipse from sonatype the 'official' one and q4e on Google Code) then, there are options in the contextual menus (right click on the project) to do that painlessly.

You can have both plugins running at the same time in your eclipse workbench and use them indifferently on a per project basis.

Convert timestamp to date in MySQL query

Just use mysql's DATE function:

mysql> select DATE(mytimestamp) from foo;

How to determine one year from now in Javascript

Use setFullyear as others have posted but be aware this returns a timestamp value not a date object. It is also a good candidate imho to add functionality via the prototype. This leads us to the following pattern:

Date.prototype.addYears = function(n) {
    var now = new Date();
    return new Date(now.setFullYear(now.getFullYear() + n));
};

console.log('Year from now is', new Date().addYears(1));

What does "O(1) access time" mean?

It means that access time is constant. Whether you're accessing from 100 or 100,000 records, the retrieval time will be the same.

In contrast, O(n) access time would indicate that the retrieval time is directly proportional to the number of records you're accessing from.

Replace \n with <br />

I know this is an old thread but I tried the suggested answers and unfortunately simply replacing line breaks with <br /> didn't do what I needed it to. It simply rendered them literally as text.

One solution would have been to disable autoescape like this: {% autoescape false %}{{ mystring }}{% endautoescape %} and this works fine but this is no good if you have user-provided content. So this was also not a solution for me.

So this is what I used:

In Python:

newvar = mystring.split('\n')

And then, passing newvar into my Jinja template:

{% for line in newvar %}
    <br />{{ line }}
{% endfor %}

Throwing multiple exceptions in a method of an interface in java

You need to specify it on the methods that can throw the exceptions. You just seperate them with a ',' if it can throw more than 1 type of exception. e.g.

public interface MyInterface {
  public MyObject find(int x) throws MyExceptionA,MyExceptionB;
}

Remove xticks in a matplotlib plot?

This snippet might help in removing the xticks only.

from matplotlib import pyplot as plt    
plt.xticks([])

This snippet might help in removing the xticks and yticks both.

from matplotlib import pyplot as plt    
plt.xticks([]),plt.yticks([])

How to set a hidden value in Razor

While I would have gone with Piotr's answer (because it's all in one line), I was surprised that your sample is closer to your solution than you think. From what you have, you simply assign the model value before you use the Html helper method.

@{Model.RequiredProperty = "default";}
@Html.HiddenFor(model => model.RequiredProperty)

How to use cURL to get jSON data and decode the data?

You can Use this for Curl:

function fakeip()  
{  
    return long2ip( mt_rand(0, 65537) * mt_rand(0, 65535) );   
}  

function getdata($url,$args=false) 
{ 
    global $session; 
    $ch = curl_init(); 
    curl_setopt($ch, CURLOPT_URL,$url); 
    curl_setopt($ch, CURLOPT_HTTPHEADER, array("REMOTE_ADDR: ".fakeip(),"X-Client-IP: ".fakeip(),"Client-IP: ".fakeip(),"HTTP_X_FORWARDED_FOR: ".fakeip(),"X-Forwarded-For: ".fakeip())); 
    if($args) 
    { 
        curl_setopt($ch, CURLOPT_POST, 1); 
        curl_setopt($ch, CURLOPT_POSTFIELDS,$args); 
    } 
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); 
    //curl_setopt($ch, CURLOPT_PROXY, "127.0.0.1:8888"); 
    $result = curl_exec ($ch); 
    curl_close ($ch); 
    return $result; 
}

Then To Read Json:

$result=getdata("https://example.com");

Then :

///Deocde Json
$data = json_decode($result,true);
///Count
             $total=count($data);
             $Str='<h1>Total : '.$total.'';
             echo $Str;
//You Can Also Make In Table:
             foreach ($data as $key => $value)
              {
          echo '  <td><font  face="calibri"color="red">'.$value[type].'   </font></td><td><font  face="calibri"color="blue">'.$value[category].'   </font></td><td><font  face="calibri"color="green">'.$value[amount].'   </font></tr><tr>';

           }
           echo "</tr></table>";
           }

You Can Also Use This:

echo '<p>Name : '.$data['result']['name'].'</p>
      <img src="'.$data['result']['pic'].'"><br>';

Hope this helped.

How do I remove objects from an array in Java?

Use:

list.removeAll(...);
//post what char you need in the ... section

E: gnupg, gnupg2 and gnupg1 do not seem to be installed, but one of them is required for this operation

Just install the updated versions of all of them.

apt-get install -y gnupg2 gnupg gnupg1

What is the correct syntax of ng-include?

You have to single quote your src string inside of the double quotes:

<div ng-include src="'views/sidepanel.html'"></div>

Source

React.js: Wrapping one component into another

Try:

var Wrapper = React.createClass({
  render: function() {
    return (
      <div className="wrapper">
        before
          {this.props.children}
        after
      </div>
    );
  }
});

See Multiple Components: Children and Type of the Children props in the docs for more info.

What does [object Object] mean? (JavaScript)

The alert() function can't output an object in a read-friendly manner. Try using console.log(object) instead, and fire up your browser's console to debug.

How can I check if character in a string is a letter? (Python)

This works:

any(c.isalpha() for c in 'string')

How can we convert an integer to string in AngularJs

.toString() is available, or just add "" to the end of the int

var x = 3,
    toString = x.toString(),
    toConcat = x + "";

Angular is simply JavaScript at the core.

How to convert datetime to timestamp using C#/.NET (ignoring current timezone)

JonSkeet has a good answer but as an alternative if you wanted to keep the result more portable you could convert the date into an ISO 8601 format which could then be read into most other frameworks but this may fall outside your requirements.

value.ToUniversalTime().ToString("O");

2D Euclidean vector rotations

Rotating a vector 90 degrees is particularily simple.

(x, y) rotated 90 degrees around (0, 0) is (-y, x).

If you want to rotate clockwise, you simply do it the other way around, getting (y, -x).

How to Create simple drag and Drop in angularjs

Modified from the angular-drag-and-drop-lists examples page

Markup

<div class="row">
    <div ng-repeat="(listName, list) in models.lists" class="col-md-6">
        <ul dnd-list="list">
            <li ng-repeat="item in list" 
                dnd-draggable="item" 
                dnd-moved="list.splice($index, 1)" 
                dnd-effect-allowed="move" 
                dnd-selected="models.selected = item" 
                ng-class="{'selected': models.selected === item}" 
                draggable="true">{{item.label}}</li>
        </ul>
    </div>
</div>

Angular

var app = angular.module('angular-starter', [
    'ui.router',
    'dndLists'
]);

app.controller('MainCtrl', function($scope){

    $scope.models = {
        selected: null,
        lists: {"A": [], "B": []}
    };

    // Generate initial model
    for (var i = 1; i <= 3; ++i) {
        $scope.models.lists.A.push({label: "Item A" + i});
        $scope.models.lists.B.push({label: "Item B" + i});
    }

    // Model to JSON for demo purpose
    $scope.$watch('models', function(model) {
        $scope.modelAsJson = angular.toJson(model, true);
    }, true);
});

Library can be installed via bower or npm: angular-drag-and-drop-lists

get UTC time in PHP

A simple gmdate() will suffice

<?php
print gmdate("Y-m-d\TH:i:s\Z");

Why there can be only one TIMESTAMP column with CURRENT_TIMESTAMP in DEFAULT clause?

Well a fix for you could be to put it on the UpdatedDate field and have a trigger that updates the AddedDate field with the UpdatedDate value only if AddedDate is null.

Occurrences of substring in a string

How about using StringUtils.countMatches from Apache Commons Lang?

String str = "helloslkhellodjladfjhello";
String findStr = "hello";

System.out.println(StringUtils.countMatches(str, findStr));

That outputs:

How to make a <div> or <a href="#"> to align center

<!DOCTYPE html>
<html>
    <head>
        <meta charset="ISO-8859-1">
    </head>
    <body>
        <h4 align="center"> 
              <a href="Demo2.html">Center</a>  
        </h4>
    </body>
    
</html>

Scraping html tables into R data frames using the XML package

library(RCurl)
library(XML)

# Download page using RCurl
# You may need to set proxy details, etc.,  in the call to getURL
theurl <- "http://en.wikipedia.org/wiki/Brazil_national_football_team"
webpage <- getURL(theurl)
# Process escape characters
webpage <- readLines(tc <- textConnection(webpage)); close(tc)

# Parse the html tree, ignoring errors on the page
pagetree <- htmlTreeParse(webpage, error=function(...){})

# Navigate your way through the tree. It may be possible to do this more efficiently using getNodeSet
body <- pagetree$children$html$children$body 
divbodyContent <- body$children$div$children[[1]]$children$div$children[[4]]
tables <- divbodyContent$children[names(divbodyContent)=="table"]

#In this case, the required table is the only one with class "wikitable sortable"  
tableclasses <- sapply(tables, function(x) x$attributes["class"])
thetable  <- tables[which(tableclasses=="wikitable sortable")]$table

#Get columns headers
headers <- thetable$children[[1]]$children
columnnames <- unname(sapply(headers, function(x) x$children$text$value))

# Get rows from table
content <- c()
for(i in 2:length(thetable$children))
{
   tablerow <- thetable$children[[i]]$children
   opponent <- tablerow[[1]]$children[[2]]$children$text$value
   others <- unname(sapply(tablerow[-1], function(x) x$children$text$value)) 
   content <- rbind(content, c(opponent, others))
}

# Convert to data frame
colnames(content) <- columnnames
as.data.frame(content)

Edited to add:

Sample output

                     Opponent Played Won Drawn Lost Goals for Goals against  % Won
    1               Argentina     94  36    24   34       148           150  38.3%
    2                Paraguay     72  44    17   11       160            61  61.1%
    3                 Uruguay     72  33    19   20       127            93  45.8%
    ...

Stopping a thread after a certain amount of time

This will work if you are not blocking.

If you are planing on doing sleeps, its absolutely imperative that you use the event to do the sleep. If you leverage the event to sleep, if someone tells you to stop while "sleeping" it will wake up. If you use time.sleep() your thread will only stop after it wakes up.

import threading
import time

duration = 2

def main():
    t1_stop = threading.Event()
    t1 = threading.Thread(target=thread1, args=(1, t1_stop))

    t2_stop = threading.Event()
    t2 = threading.Thread(target=thread2, args=(2, t2_stop))

    time.sleep(duration)
    # stops thread t2
    t2_stop.set()

def thread1(arg1, stop_event):
    while not stop_event.is_set():
        stop_event.wait(timeout=5)

def thread2(arg1, stop_event):
    while not stop_event.is_set():
        stop_event.wait(timeout=5)

Android: ListView elements with multiple clickable buttons

For future readers:

To select manually the buttons with the trackball use:

myListView.setItemsCanFocus(true);

And to disable the focus on the whole list items:

myListView.setFocusable(false);
myListView.setFocusableInTouchMode(false);
myListView.setClickable(false);

It works fine for me, I can click on buttons with touchscreen and also alows focus an click using keypad

Arduino Nano - "avrdude: ser_open():system can't open device "\\.\COM1": the system cannot find the file specified"

Instead of changing the COM port in Device manager, if you're using the Arduino software, I had to set the port in Tools > Port menu.

Delete rows with blank values in one particular column

An easy approach would be making all the blank cells NA and only keeping complete cases. You might also look for na.omit examples. It is a widely discussed topic.

df[df==""]<-NA
df<-df[complete.cases(df),]

How do I get console input in javascript?

Good old readline();.

See MDN (archive).

How to view file history in Git?

Use git log to view the commit history. Each commit has an associated revision specifier that is a hash key (e.g. 14b8d0982044b0c49f7a855e396206ee65c0e787 and b410ad4619d296f9d37f0db3d0ff5b9066838b39). To view the difference between two different commits, use git diff with the first few characters of the revision specifiers of both commits, like so:

# diff between commits 14b8... and b410...
git diff 14b8..b410
# only include diff of specified files
git diff 14b8..b410 path/to/file/a path/to/file/b

If you want to get an overview over all the differences that happened from commit to commit, use git log or git whatchanged with the patch option:

# include patch displays in the commit history
git log -p
git whatchanged -p
# only get history of those commits that touch specified paths
git log path/a path/b
git whatchanged path/c path/d

How to embed HTML into IPython output?

First, the code:

from random import choices

def random_name(length=6):
    return "".join(choices("abcdefghijklmnopqrstuvwxyz", k=length))
# ---

from IPython.display import IFrame, display, HTML
import tempfile
from os import unlink

def display_html_to_frame(html, width=600, height=600):
    name = f"temp_{random_name()}.html"
    with open(name, "w") as f:
        print(html, file=f)
    display(IFrame(name, width, height), metadata=dict(isolated=True))
    # unlink(name)
    
def display_html_inline(html):
    display(HTML(html, metadata=dict(isolated=True)))

h="<html><b>Hello</b></html>"    
display_html_to_iframe(h)
display_html_inline(h)

Some quick notes:

You can generally just use inline HTML for simple items. If you are rendering a framework, like a large JavaScript visualization framework, you may need to use an IFrame. Its hard enough for Jupyter to run in a browser without random HTML embedded.
The strange parameter, metadata=dict(isolated=True) does not isolate the result in an IFrame, as older documentation suggests. It appears to prevent clear-fix from resetting everything. The flag is no longer documented: I just found using it allowed certain display: grid styles to correctly render.
This IFrame solution writes to a temporary file. You could use a data uri as described here but it makes debugging your output difficult. The Jupyter IFrame function does not take a data or srcdoc attribute.
The tempfile module creations are not sharable to another process, hence the random_name().
If you use the HTML class with an IFrame in it, you get a warning. This may be only once per session.
You can use HTML('Hello, <b>world</b>') at top level of cell and its return value will render. Within a function, use display(HTML(...)) as is done above. This also allows you to mix display and print calls freely.
Oddly, IFrames are indented slightly more than inline HTML.

How do I get first element rather than using [0] in jQuery?

With the assumption that there's only one element:

 $("#grid_GridHeader")[0]
 $("#grid_GridHeader").get(0)
 $("#grid_GridHeader").get()

...are all equivalent, returning the single underlying element.

From the jQuery source code, you can see that get(0), under the covers, essentially does the same thing as the [0] approach:

 // Return just the object
 ( num < 0 ? this.slice(num)[ 0 ] : this[ num ] );

How to check if type of a variable is string?

The type module also exists if you are checking more than ints and strings. http://docs.python.org/library/types.html

Alternative to itoa() for converting integer to string C++?

Archeology

itoa was a non-standard helper function designed to complement the atoi standard function, and probably hiding a sprintf (Most its features can be implemented in terms of sprintf): http://www.cplusplus.com/reference/clibrary/cstdlib/itoa.html

The C Way

Use sprintf. Or snprintf. Or whatever tool you find.

Despite the fact some functions are not in the standard, as rightly mentioned by "onebyone" in one of his comments, most compiler will offer you an alternative (e.g. Visual C++ has its own _snprintf you can typedef to snprintf if you need it).

The C++ way.

Use the C++ streams (in the current case std::stringstream (or even the deprecated std::strstream, as proposed by Herb Sutter in one of his books, because it's somewhat faster).

Conclusion

You're in C++, which means that you can choose the way you want it:

The faster way (i.e. the C way), but you should be sure the code is a bottleneck in your application (premature optimizations are evil, etc.) and that your code is safely encapsulated to avoid risking buffer overruns.
The safer way (i.e., the C++ way), if you know this part of the code is not critical, so better be sure this part of the code won't break at random moments because someone mistook a size or a pointer (which happens in real life, like... yesterday, on my computer, because someone thought it "cool" to use the faster way without really needing it).

How do I set browser width and height in Selenium WebDriver?

Try something like this:

IWebDriver _driver = new FirefoxDriver();
_driver.Manage().Window.Position = new Point(0, 0);
_driver.Manage().Window.Size = new Size(1024, 768);

Not sure if it'll resize after being launched though, so maybe it's not what you want

adb not finding my device / phone (MacOS X)

I had a devil of a time with this.

I attempted this method but it did not work. I ended up turning OFF USB debugging and the device then requested that install motocast.

It attempted to use the build in installer but it kept crashing past the download. After I downloaded it manually and installed it, I was able to do it.

I am running 10.6.8 and the device is a Xoom 2 running 3.2.2

After that installation, it worked fine.

make: *** [ ] Error 1 error

Sometimes you will get lots of compiler outputs with many warnings and no line of output that says "error: you did something wrong here" but there was still an error. An example of this is a missing header file - the compiler says something like "no such file" but not "error: no such file", then it exits with non-zero exit code some time later (perhaps after many more warnings). Make will bomb out with an error message in these cases!

Setting width/height as percentage minus pixels

I use Jquery for this

function setSizes() {
   var containerHeight = $("#listContainer").height();
   $("#myList").height(containerHeight - 18);
}

then I bind the window resize to recalc it whenever the browser window is resized (if container's size changed with window resize)

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

How to find where javaw.exe is installed?

It worked to me:

    String javaHome = System.getProperty("java.home");
    File f = new File(javaHome);
    f = new File(f, "bin");
    f = new File(f, "javaw.exe"); //or f = new File(f, "javaws.exe"); //work too
    System.out.println(f + "    exists: " + f.exists());

How to test that a registered variable is not empty?

when: myvar | default('', true) | trim != ''

I use | trim != '' to check if a variable has an empty value or not. I also always add the | default(..., true) check to catch when myvar is undefined too.

How do I convert a float to an int in Objective C?

In support of unwind, remember that Objective-C is a superset of C, rather than a completely new language.

Anything you can do in regular old ANSI C can be done in Objective-C.

cat, grep and cut - translated to python

For Translating the command to python refer below:-

1)Alternative of cat command is open refer this. Below is the sample

>>> f = open('workfile', 'r')
>>> print f

2)Alternative of grep command refer this

3)Alternative of Cut command refer this

How do I make a simple makefile for gcc on Linux?

The simplest make file can be

all : test

test : test.o
        gcc -o test test.o 

test.o : test.c
        gcc -c test.c

clean :
        rm test *.o

Android Animation Alpha

• `Kotlin Version`

Simply use ViewPropertyAnimator like this:

iv.alpha = 0.2f
iv.animate().apply {
    interpolator = LinearInterpolator()
    duration = 500
    alpha(1f)
    startDelay = 1000
    start()
}

Where is the syntax for TypeScript comments documented?

You can use comments like in regular JavaScript:

1 Introduction

[...] TypeScript syntax is a superset of ECMAScript 2015 (ES2015) syntax.

2 Basic Concepts

[...] This document describes the syntactic grammar added by TypeScript [...]

Source: TypeScript Language Specification

The only two mentions of the word "comments" in the spec are:

1 Introduction

[...] TypeScript also provides to JavaScript programmers a system of optional type annotations. These type annotations are like the JSDoc comments found in the Closure system, but in TypeScript they are integrated directly into the language syntax. This integration makes the code more readable and reduces the maintenance cost of synchronizing type annotations with their corresponding variables.

11.1.1 Source Files Dependencies

[...] A comment of the form /// <reference path="..."/> adds a dependency on the source file specified in the path argument. The path is resolved relative to the directory of the containing source file.

python-pandas and databases like mysql

For Sybase the following works (with http://python-sybase.sourceforge.net)

import pandas.io.sql as psql
import Sybase

df = psql.frame_query("<Query>", con=Sybase.connect("<dsn>", "<user>", "<pwd>"))

How to Use Multiple Columns in Partition By And Ensure No Duplicate Row is Returned

If your table columns contains duplicate data and If you directly apply row_ number() and create PARTITION on column, there is chance to have result in duplicated row and with row number value.

To remove duplicate row, you need one more INNER query in from clause which eliminates duplicate rows and then it will give output to it's foremost outer FROM clause where you can apply PARTITION and ROW_NUMBER ().

As like below example:

SELECT DATE, STATUS, TITLE, ROW_NUMBER() OVER (PARTITION BY DATE, STATUS, TITLE ORDER BY QUANTITY ASC) AS Row_Num
FROM (
     SELECT DISTINCT <column names>...
) AS tbl

Removing multiple classes (jQuery)

There are many ways can do that!

jQuery

remove all class
$("element").removeClass();
OR
$("#item").removeAttr('class');
OR
$("#item").attr('class', '');
OR
$('#item')[0].className = '';
remove multi class
$("element").removeClass("class1 ... classn");
OR
$("element").removeClass("class1").removeClass("...").removeClass("classn");

Vanilla Javascript

remove all class

_x000D_

// remove all items all class  _x000D_
const items = document.querySelectorAll('item');_x000D_
for (let i = 0; i < items.length; i++) {_x000D_
    items[i].className = '';_x000D_
}

_x000D_

remove multi class

_x000D_

// only remove all class of first item_x000D_
const item1 = document.querySelector('item');_x000D_
item1.className = '';

_x000D_

Printing everything except the first field with awk

A first stab at it seems to work for your particular case.

awk '{ f = $1; i = $NF; while (i <= 0); gsub(/^[A-Z][A-Z][ ][ ]/,""); print $i, f; }'

API Gateway CORS: no 'Access-Control-Allow-Origin' header

I get the same problem. I have used 10hrs to findout.

https://serverless.com/framework/docs/providers/aws/events/apigateway/

// handler.js

'use strict';

module.exports.hello = function(event, context, callback) {

const response = {
  statusCode: 200,
  headers: {
    "Access-Control-Allow-Origin" : "*", // Required for CORS support to work
    "Access-Control-Allow-Credentials" : true // Required for cookies, authorization headers with HTTPS 
  },
  body: JSON.stringify({ "message": "Hello World!" })
};

callback(null, response);
};

Entity Framework: One Database, Multiple DbContexts. Is this a bad idea?

In code first, you can have multiple DBContext and just one database. You just have to specify the connection string in the constructor.

public class MovieDBContext : DbContext
{
    public MovieDBContext()
        : base("DefaultConnection")
    {

    }
    public DbSet<Movie> Movies { get; set; }
}

How to convert date to string and to date again?

try this function

public static Date StringToDate(String strDate) throws ModuleException {
    Date dtReturn = null;
    SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-mm-dd");
    try {
        dtReturn = simpleDateFormat.parse(strDate);
    } catch (ParseException e) {
        e.printStackTrace();
    }
    return dtReturn;
}

Laravel - Forbidden You don't have permission to access / on this server

For my case was encountering this issue with Laravel 6.x and managed to sort it out by installing an SSL Certificate. Tried playing around with .htaccess but never worked. I'm using the default Laravel 6.x .htaccess file which has the following contents

<IfModule mod_rewrite.c>
    <IfModule mod_negotiation.c>
        Options -MultiViews -Indexes
    </IfModule>

    RewriteEngine On

    # Handle Authorization Header
    RewriteCond %{HTTP:Authorization} .
    RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]

    # Redirect Trailing Slashes If Not A Folder...
    RewriteCond %{REQUEST_FILENAME} !-d
    RewriteCond %{REQUEST_URI} (.+)/$
    RewriteRule ^ %1 [L,R=301]

    # Handle Front Controller...
    RewriteCond %{REQUEST_FILENAME} !-d
    RewriteCond %{REQUEST_FILENAME} !-f
    RewriteRule ^ index.php [L]
</IfModule>

Android Material: Status bar color won't change

The status bar is a system window owned by the operating system. On pre-5.0 Android devices, applications do not have permission to alter its color, so this is not something that the AppCompat library can support for older platform versions. The best AppCompat can do is provide support for coloring the ActionBar and other common UI widgets within the application.

Excel concatenation quotes

Use CHAR:

=Char(34)&"This is in quotes"&Char(34)

Should evaluate to:

"This is in quotes"

How to get only time from date-time C#

You need to account for DateTime Kind too.

public static DateTime GetTime(this DateTime d)
{
    return new DateTime(d.TimeOfDay.Ticks, d.Kind);
}

Where can I find decent visio templates/diagrams for software architecture?

Here is a link to a Visio Stencil and Template for UML 2.0.

What are Bearer Tokens and token_type in OAuth 2?

token_type is a parameter in Access Token generate call to Authorization server, which essentially represents how an access_token will be generated and presented for resource access calls. You provide token_type in the access token generation call to an authorization server.

If you choose Bearer (default on most implementation), an access_token is generated and sent back to you. Bearer can be simply understood as "give access to the bearer of this token." One valid token and no question asked. On the other hand, if you choose Mac and sign_type (default hmac-sha-1 on most implementation), the access token is generated and kept as secret in Key Manager as an attribute, and an encrypted secret is sent back as access_token.

Yes, you can use your own implementation of token_type, but that might not make much sense as developers will need to follow your process rather than standard implementations of OAuth.

Create table (structure) from existing table

FOR MYSQL:

You can use:

CREATE TABLE foo LIKE bar;

Documentation here.

How do you specifically order ggplot2 x axis instead of alphabetical order?

The accepted answer offers a solution which requires changing of the underlying data frame. This is not necessary. One can also simply factorise within the aes() call directly or create a vector for that instead.

This is certainly not much different than user Drew Steen's answer, but with the important difference of not changing the original data frame.

level_order <- c('virginica', 'versicolor', 'setosa') #this vector might be useful for other plots/analyses

ggplot(iris, aes(x = factor(Species, level = level_order), y = Petal.Width)) + geom_col()

level_order <- factor(iris$Species, level = c('virginica', 'versicolor', 'setosa'))

ggplot(iris, aes(x = level_order, y = Petal.Width)) + geom_col()

or
directly in the aes() call without a pre-created vector:

ggplot(iris, aes(x = factor(Species, level = c('virginica', 'versicolor', 'setosa')), y = Petal.Width)) + geom_col()

Matplotlib color according to class labels

A simple solution is to assign color for each class. This way, we can control how each color is for each class. For example:

arr1 = [1, 2, 3, 4, 5]
arr2 = [2, 3, 3, 4, 4]
labl = [0, 1, 1, 0, 0]
color= ['red' if l == 0 else 'green' for l in labl]
plt.scatter(arr1, arr2, color=color)

How to concatenate items in a list to a single string?

It's very useful for beginners to know why join is a string method.

It's very strange at the beginning, but very useful after this.

The result of join is always a string, but the object to be joined can be of many types (generators, list, tuples, etc).

.join is faster because it allocates memory only once. Better than classical concatenation (see, extended explanation).

Once you learn it, it's very comfortable and you can do tricks like this to add parentheses.

>>> ",".join("12345").join(("(",")"))
Out:
'(1,2,3,4,5)'

>>> list = ["(",")"]
>>> ",".join("12345").join(list)
Out:
'(1,2,3,4,5)'

Android/Java - Date Difference in days

        public void dateDifferenceExample() {

        // Set the date for both of the calendar instance
        GregorianCalendar calDate = new GregorianCalendar(2012, 10, 02,5,23,43);
        GregorianCalendar cal2 = new GregorianCalendar(2015, 04, 02);

        // Get the represented date in milliseconds
        long millis1 = calDate.getTimeInMillis();
        long millis2 = cal2.getTimeInMillis();

        // Calculate difference in milliseconds
        long diff = millis2 - millis1;

        // Calculate difference in seconds
        long diffSeconds = diff / 1000;

        // Calculate difference in minutes
        long diffMinutes = diff / (60 * 1000);

        // Calculate difference in hours
        long diffHours = diff / (60 * 60 * 1000);

        // Calculate difference in days
        long diffDays = diff / (24 * 60 * 60 * 1000);
    Toast.makeText(getContext(), ""+diffSeconds, Toast.LENGTH_SHORT).show();


}

keycode and charcode

I (being people myself) wrote this statement because I wanted to detect the key which the user typed on the keyboard across different browsers.

In firefox for example, characters have > 0 charCode and 0 keyCode, and keys such as arrows & backspace have > 0 keyCode and 0 charCode.

However, using this statement can be problematic as "collisions" are possible. For example, if you want to distinguish between the Delete and the Period keys, this won't work, as the Delete has keyCode = 46 and the Period has charCode = 46.

PHP How to fix Notice: Undefined variable:

You should initialize your variables outside the while loop. Outside the while loop, they currently have no scope. You are just relying on the good graces of php to let the values carry over outside the loop

           $hn = "";
           $pid = "";
           $datereg = "";
           $prefix = "";
           $fname = "";
           $lname = "";
           $age = "";
           $sex = "";
           while (...){}

alternatively, it looks like you are just expecting a single row back. so you could just say

$row = pg_fetch_array($result);
if(!row) {
    return array();
}
$hn = $row["patient_hn"];
$pid = $row["patient_id"];
$datereg = $row["patient_date_register"];
$prefix = $row["patient_prefix"];
$fname = $row["patient_fname"];
$lname = $row["patient_lname"];
$age = $row["patient_age"];
$sex = $row["patient_sex"];

return array($hn,$pid,$datereg,$prefix,$fname,$lname,$age,$sex) ;

implement addClass and removeClass functionality in angular2

You can basically switch the class using [ngClass]

for example

<button [ngClass]="{'active': selectedItem === 'item1'}" (click)="selectedItem = 'item1'">Button One</button>
<button [ngClass]="{'active': selectedItem === 'item2'}" (click)="selectedItem = 'item2'">Button Two</button>

SCRIPT438: Object doesn't support property or method IE

I have added var for all the variables in the corrosponding javascript. That solved the problem in IE.

Previous Code

billableStatus = 1 ;
var classStr = $(this).attr("id").split("_");  
date = currentWeekDates[classStr[2]]; // Required    

activityNameId = "initialRows_" + classStr[1] + "_projectActivityName";
activityId = $("#"+activityNameId).val();        

var projectNameId = "initialRows_" + classStr[1] + "_projectName" ;
projectName = $("#"+projectNameId).val();        

var timeshitEntryId = "initialRows_"+classStr[1]+"_"+classStr[2];     
timeshitEntry = $("#"+timeshitEntryId).val();

New Code

var billableStatus = 1 ;
var classStr = $(this).attr("id").split("_");  
var date = currentWeekDates[classStr[2]]; // Required    

var activityNameId = "initialRows_" + classStr[1] + "_projectActivityName";
var activityId = $("#"+activityNameId).val();        

var projectNameId = "initialRows_" + classStr[1] + "_projectName" ;
var projectName = $("#"+projectNameId).val();        

var timeshitEntryId = "initialRows_"+classStr[1]+"_"+classStr[2];     
var timeshitEntry = $("#"+timeshitEntryId).val();

PHP - include a php file and also send query parameters

The simplest way to do this is like this

index.php

<?php $active = 'home'; include 'second.php'; ?>

second.php

<?php echo $active; ?>

You can share variables since you are including 2 files by using "include"

C Macro definition to determine big endian or little endian machine?

Don't forget that endianness is not the whole story - the size of char might not be 8 bits (e.g. DSP's), two's complement negation is not guaranteed (e.g. Cray), strict alignment might be required (e.g. SPARC, also ARM springs into middle-endian when unaligned), etc, etc.

It might be a better idea to target a specific CPU architecture instead.

For example:

#if defined(__i386__) || defined(_M_IX86) || defined(_M_IX64)
  #define USE_LITTLE_ENDIAN_IMPL
#endif

void my_func()
{
#ifdef USE_LITTLE_ENDIAN_IMPL
  // Intel x86-optimized, LE implementation
#else
  // slow but safe implementation
#endif
}

Note that this solution is also not ultra-portable unfortunately, as it depends on compiler-specific definitions (there is no standard, but here's a nice compilation of such definitions).

Where does Android app package gets installed on phone

/data/data/"your app package name "

but you wont able to read that unless you have a rooted device

Shell Script Syntax Error: Unexpected End of File

In my case, I found that placing a here document (like sqplus ... << EOF) statements indented also raise the same error as shown below:

./dbuser_case.ksh: line 25: syntax error: unexpected end of file

So after removing the indentation for this, then it went fine.

Hope it helps...

Autoresize View When SubViews are Added

Yes, it is because you are using auto layout. Setting the view frame and resizing mask will not work.

You should read Working with Auto Layout Programmatically and Visual Format Language.

You will need to get the current constraints, add the text field, adjust the contraints for the text field, then add the correct constraints on the text field.

Requery a subform from another form?

By closing and opening, the main form usually runs all related queries (including the subform related ones). I had a similar problem and resolved it by adding the following to Save Command button on click event.

DoCmd.Close acForm, "formname", acSaveYes
DoCmd.OpenForm "formname"

Linux: Which process is causing "device busy" when doing umount?

lsof +f -- /mountpoint

(as lists the processes using files on the mount mounted at /mountpoint. Particularly useful for finding which process(es) are using a mounted USB stick or CD/DVD.

Extracting columns from text file with different delimiters in Linux

If the command should work with both tabs and spaces as the delimiter I would use awk:

awk '{print $100,$101,$102,$103,$104,$105}' myfile > outfile

As long as you just need to specify 5 fields it is imo ok to just type them, for longer ranges you can use a for loop:

awk '{for(i=100;i<=105;i++)print $i}' myfile > outfile

If you want to use cut, you need to use the -f option:

cut -f100-105 myfile > outfile

If the field delimiter is different from TAB you need to specify it using -d:

cut -d' ' -f100-105 myfile > outfile

Check the man page for more info on the cut command.

How to get input type using jquery?

Very Simple using jQuery... To check that selected element is type of input

$(".elementClass").is('input')

To check that selected element is type of textarea

$(".elementClass").is('textarea')

To check that selected element is type of Radio

$(".elementClass").is('input[type="radio"]')

To check that selected element is type of Checkbox

$(".elementClass").is('input[type="checkbox"]')

To check that selected element is type of Input type number

$(".elementClass").is('input[type="number"]')

To check that selected element is type of Input type password

$(".elementClass").is('input[type="password"]')

To check that selected element is type of Input type email

$(".elementClass").is('input[type="email"]')

.....

...

So Basically you can change selection and type to determine required input type

Why does an onclick property set with setAttribute fail to work in IE?

Not relevant to the onclick issue, but also related:

For html attributes whose name collide with javascript reserved words, an alternate name is chosen, eg. <div class=''>, but div.className, or <label for='...'>, but label.htmlFor.

In reasonable browsers, this doesn't affect setAttribute. So in gecko and webkit you'd call div.setAttribute('class', 'foo'), but in IE you have to use the javascript property name instead, so div.setAttribute('className', 'foo').

Print the address or pointer for value in C

I have been in this position, especially with new hardware. I suggest you write a little hex dump routine of your own. You will be able to see the data, and the addresses they are at, shown all together. It's good practice and a confidence builder.

How do I turn off Unicode in a VC++ project?

project properities -> configuration properities -> general -> charater set

Apache error: _default_ virtualhost overlap on port 443

It is highly unlikely that adding NameVirtualHost *:443 is the right solution, because there are a limited number of situations in which it is possible to support name-based virtual hosts over SSL. Read this and this for some details (there may be better docs out there; these were just ones I found that discuss the issue in detail).

If you're running a relatively stock Apache configuration, you probably have this somewhere:

<VirtualHost _default_:443>

Your best bet is to either:

Place your additional SSL configuration into this existing VirtualHost container, or
Comment out this entire VirtualHost block and create a new one. Don't forget to include all the relevant SSL options.

Programs & Examples On #Hsqldb

Cause of No suitable driver found for

View content of H2 or HSQLDB in-memory database

Huge performance difference when using group by vs distinct

Remove all line breaks from a long string of text

How do I set the value property in AngularJS' ng-options?

How to select from subquery using Laravel Query Builder?

Common Header / Footer with static HTML

Python: No acceptable C compiler found in $PATH when installing python

/** and /* in Java Comments

Custom thread pool in Java 8 parallel stream

How to break out of while loop in Python?

Laravel blank white screen

"replace" function examples

"Connection for controluser as defined in your configuration failed" with phpMyAdmin in XAMPP

What is the difference between "Form Controls" and "ActiveX Control" in Excel 2010?

header('HTTP/1.0 404 Not Found'); not doing anything

What's the difference between a word and byte?

What range of values can integer types store in C++

How to retrieve the current version of a MySQL database management system (DBMS)?

Exception thrown inside catch block - will it be caught again?

Connect to mysql on Amazon EC2 from a remote server

Update: Feb 2017

1. Add MySQL to inbound rules.

2. Add bind-address = 0.0.0.0 to my.cnf

3. Create a remote user and grant privileges.

Clone contents of a GitHub repository (without the folder itself)

Installing OpenCV for Python on Ubuntu, getting ImportError: No module named cv2.cv

Foreign key referencing a 2 columns primary key in SQL Server

Get list of certificates from the certificate store in C#

Repeat a task with a time delay?

Binding an Image in WPF MVVM

How to Alter a table for Identity Specification is identity SQL Server

java.io.InvalidClassException: local class incompatible:

What is git fast-forwarding?

getting the error: expected identifier or ‘(’ before ‘{’ token

Using R to download zipped data file, extract, and import data

How can I reconcile detached HEAD with master/origin?

Modifying CSS class property values on the fly with JavaScript / jQuery

MySql Inner Join with WHERE clause

Data binding for TextBox

HTML - how to make an entire DIV a hyperlink?

Determining if a number is prime

Exporting data In SQL Server as INSERT INTO

100% width in React Native Flexbox

constant pointer vs pointer on a constant value

Merging 2 branches together in GIT

How to run shell script file using nodejs?

How do I add a newline to a TextView in Android?

Where could I buy a valid SSL certificate?

How do I get current date/time on the Windows command line in a suitable format for usage in a file/folder name?

Xcode 10, Command CodeSign failed with a nonzero exit code

Storing an object in state of a React component?

How can I see normal print output created during pytest run?

Using custom fonts using CSS?

Fatal error: Call to a member function query() on null

Setting max-height for table cell contents

Evaluating a mathematical expression in a string

How do I remove background-image in css?

Correct way to create rounded corners in Twitter Bootstrap

Text Progress Bar in the Console

angular-cli server - how to proxy API requests to another server?

How do I configure modprobe to find my module?

git with development, staging and production branches

In Python, how do you convert seconds since epoch to a `datetime` object?

How to fix "set SameSite cookie to none" warning?

How to bind WPF button to a command in ViewModelBase?

IN Clause with NULL or IS NULL

AngularJS- Login and Authentication in each route and controller

Node.js Generate html

Hashmap with Streams in Java 8 Streams to collect value of Map

jQuery scroll to ID from different page

How can I change the color of AlertDialog title and the color of the line under it

jQuery UI Dialog window loaded within AJAX style jQuery UI Tabs

Map and Reduce in .NET

How to check if an Object is a Collection Type in Java?

How do I stop Notepad++ from showing autocomplete for all words in the file

Jenkins Host key verification failed

Escape quotes in JavaScript

javascript change background color on click