Programs & Examples On #Servlet filters

Is this what you're looking for?

if (request instanceof HttpServletRequest) {
 String url = ((HttpServletRequest)request).getRequestURL().toString();
 String queryString = ((HttpServletRequest)request).getQueryString();
}

To Reconstruct:

System.out.println(url + "?" + queryString);

Info on HttpServletRequest.getRequestURL() and HttpServletRequest.getQueryString().

Extend HttpServletRequestWrapper, override the header getters to return the parameters as well:

public class AddParamsToHeader extends HttpServletRequestWrapper {
    public AddParamsToHeader(HttpServletRequest request) {
        super(request);
    }

    public String getHeader(String name) {
        String header = super.getHeader(name);
        return (header != null) ? header : super.getParameter(name); // Note: you can't use getParameterValues() here.
    }

    public Enumeration getHeaderNames() {
        List<String> names = Collections.list(super.getHeaderNames());
        names.addAll(Collections.list(super.getParameterNames()));
        return Collections.enumeration(names);
    }
}

..and wrap the original request with it:

chain.doFilter(new AddParamsToHeader((HttpServletRequest) request), response);

That said, I personally find this a bad idea. Rather give it direct access to the parameters or pass the parameters to it.

You could use a Filter and do the following test:

HttpSession session = request.getSession(false);// don't create if it doesn't exist
if(session != null && !session.isNew()) {
    chain.doFilter(request, response);
} else {
    response.sendRedirect("/login.jsp");
}

The above code is untested.

This isn't the most extensive solution however. You should also test that some domain-specific object or flag is available in the session before assuming that because a session isn't new the user must've logged in. Be paranoid!

The above answers were very helpful, but still had some problems in my experience. On tomcat 7 servlet 3.0, the getParamter and getParamterValues also had to be overwritten. The solution here includes both get-query parameters and the post-body. It allows for getting raw-string easily.

Like the other solutions it uses Apache commons-io and Googles Guava.

In this solution the getParameter* methods do not throw IOException but they use super.getInputStream() (to get the body) which may throw IOException. I catch it and throw runtimeException. It is not so nice.

import com.google.common.collect.Iterables;
import com.google.common.collect.ObjectArrays;

import org.apache.commons.io.IOUtils;
import org.apache.http.NameValuePair;
import org.apache.http.client.utils.URLEncodedUtils;
import org.apache.http.entity.ContentType;

import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.nio.charset.Charset;
import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

import javax.servlet.ServletInputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;

/**
 * Purpose of this class is to make getParameter() return post data AND also be able to get entire
 * body-string. In native implementation any of those two works, but not both together.
 */
public class MultiReadHttpServletRequest extends HttpServletRequestWrapper {
    public static final String UTF8 = "UTF-8";
    public static final Charset UTF8_CHARSET = Charset.forName(UTF8);
    private ByteArrayOutputStream cachedBytes;
    private Map<String, String[]> parameterMap;

    public MultiReadHttpServletRequest(HttpServletRequest request) {
        super(request);
    }

    public static void toMap(Iterable<NameValuePair> inputParams, Map<String, String[]> toMap) {
        for (NameValuePair e : inputParams) {
            String key = e.getName();
            String value = e.getValue();
            if (toMap.containsKey(key)) {
                String[] newValue = ObjectArrays.concat(toMap.get(key), value);
                toMap.remove(key);
                toMap.put(key, newValue);
            } else {
                toMap.put(key, new String[]{value});
            }
        }
    }

    @Override
    public ServletInputStream getInputStream() throws IOException {
        if (cachedBytes == null) cacheInputStream();
        return new CachedServletInputStream();
    }

    @Override
    public BufferedReader getReader() throws IOException {
        return new BufferedReader(new InputStreamReader(getInputStream()));
    }

    private void cacheInputStream() throws IOException {
    /* Cache the inputStream in order to read it multiple times. For
     * convenience, I use apache.commons IOUtils
     */
        cachedBytes = new ByteArrayOutputStream();
        IOUtils.copy(super.getInputStream(), cachedBytes);
    }

    @Override
    public String getParameter(String key) {
        Map<String, String[]> parameterMap = getParameterMap();
        String[] values = parameterMap.get(key);
        return values != null && values.length > 0 ? values[0] : null;
    }

    @Override
    public String[] getParameterValues(String key) {
        Map<String, String[]> parameterMap = getParameterMap();
        return parameterMap.get(key);
    }

    @Override
    public Map<String, String[]> getParameterMap() {
        if (parameterMap == null) {
            Map<String, String[]> result = new LinkedHashMap<String, String[]>();
            decode(getQueryString(), result);
            decode(getPostBodyAsString(), result);
            parameterMap = Collections.unmodifiableMap(result);
        }
        return parameterMap;
    }

    private void decode(String queryString, Map<String, String[]> result) {
        if (queryString != null) toMap(decodeParams(queryString), result);
    }

    private Iterable<NameValuePair> decodeParams(String body) {
        Iterable<NameValuePair> params = URLEncodedUtils.parse(body, UTF8_CHARSET);
        try {
            String cts = getContentType();
            if (cts != null) {
                ContentType ct = ContentType.parse(cts);
                if (ct.getMimeType().equals(ContentType.APPLICATION_FORM_URLENCODED.getMimeType())) {
                    List<NameValuePair> postParams = URLEncodedUtils.parse(IOUtils.toString(getReader()), UTF8_CHARSET);
                    params = Iterables.concat(params, postParams);
                }
            }
        } catch (IOException e) {
            throw new IllegalStateException(e);
        }
        return params;
    }

    public String getPostBodyAsString() {
        try {
            if (cachedBytes == null) cacheInputStream();
            return cachedBytes.toString(UTF8);
        } catch (UnsupportedEncodingException e) {
            throw new RuntimeException(e);
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

    /* An inputStream which reads the cached request body */
    public class CachedServletInputStream extends ServletInputStream {
        private ByteArrayInputStream input;

        public CachedServletInputStream() {
            /* create a new input stream from the cached request body */
            input = new ByteArrayInputStream(cachedBytes.toByteArray());
        }

        @Override
        public int read() throws IOException {
            return input.read();
        }
    }

    @Override
    public String toString() {
        String query = dk.bnr.util.StringUtil.nullToEmpty(getQueryString());
        StringBuilder sb = new StringBuilder();
        sb.append("URL='").append(getRequestURI()).append(query.isEmpty() ? "" : "?" + query).append("', body='");
        sb.append(getPostBodyAsString());
        sb.append("'");
        return sb.toString();
    }
}

maybe doesnt exists javaee-api-7.0.jar. download this jar and on your project right clik

1. on your project right click
2. build path
3. Configure build path
4. Add external Jars
5. javaee-api-7.0.jar choose
6. Apply and finish

I was able to handle this in Spring 2 as following

 private boolean isInPath(ServletRequest request) {
   String PATH_TO_VALIDATE = "/path/";
   String path = ((HttpServletRequest) request).getRequestURI();
   return path != null && path.toLowerCase().contains(PATH_TO_VALIDATE);
}

In case you are using the annotation method for filter definition (as opposed to defining them in the web.xml), you can do so by just putting an array of mappings in the @WebFilter annotation:

/**
 * Filter implementation class LoginFilter
 */
@WebFilter(urlPatterns = { "/faces/Html/Employee","/faces/Html/Admin", "/faces/Html/Supervisor"})
public class LoginFilter implements Filter {
    ...

And just as an FYI, this same thing works for servlets using the servlet annotation too:

/**
 * Servlet implementation class LoginServlet
 */
@WebServlet({"/faces/Html/Employee", "/faces/Html/Admin", "/faces/Html/Supervisor"})
public class LoginServlet extends HttpServlet {
    ...

Write a simple class that subcalsses HttpServletRequestWrapper with a getParameter() method that returns the sanitized version of the input. Then pass an instance of your HttpServletRequestWrapper to Filter.doChain() instead of the request object directly.

From Spring docs,

Embedded servlet containers - Add a Servlet, Filter or Listener to an application

To add a Servlet, Filter, or Servlet *Listener provide a @Bean definition for it.

Eg:

@Bean
public Filter compressFilter() {
    CompressingFilter compressFilter = new CompressingFilter();
    return compressFilter;
}

Add this @Bean config to your @Configuration class and filter will be registered on startup.

Also you can add Servlets, Filters, and Listeners using classpath scanning,

@WebServlet, @WebFilter, and @WebListener annotated classes can be automatically registered with an embedded servlet container by annotating a @Configuration class with @ServletComponentScan and specifying the package(s) containing the components that you want to register. By default, @ServletComponentScan will scan from the package of the annotated class.

I'm trying to find a method to redirect my request from filter to login page

Don't

You just invoke

chain.doFilter(request, response);

from filter and the normal flow will go ahead.

I don't know how to redirect from servlet

You can use

response.sendRedirect(url);

to redirect from servlet

1. Implement javax.servlet.Filter.
2. In doFilter() method, cast the incoming ServletRequest to HttpServletRequest.
3. Use HttpServletRequest#getRequestURI() to grab the path.
4. Use straightforward java.lang.String methods like substring(), split(), concat() and so on to extract the part of interest and compose the new path.
5. Use either ServletRequest#getRequestDispatcher() and then RequestDispatcher#forward() to forward the request/response to the new URL (server-side redirect, not reflected in browser address bar), or cast the incoming ServletResponse to HttpServletResponse and then HttpServletResponse#sendRedirect() to redirect the response to the new URL (client side redirect, reflected in browser address bar).
6. Register the filter in web.xml on an url-pattern of /* or /Check_License/*, depending on the context path, or if you're on Servlet 3.0 already, use the @WebFilter annotation for that instead.

Don't forget to add a check in the code if the URL needs to be changed and if not, then just call FilterChain#doFilter(), else it will call itself in an infinite loop.

Alternatively you can also just use an existing 3rd party API to do all the work for you, such as Tuckey's UrlRewriteFilter which can be configured the way as you would do with Apache's mod_rewrite.

1. Make the servlet filter implement the spring Ordered interface.
2. Declare the servlet filter bean manually in configuration class.

    import org.springframework.core.Ordered;
    
    public class MyFilter implements Filter, Ordered {

        @Override
        public void init(FilterConfig filterConfig) {
            // do something
        }

        @Override
        public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
            // do something
        }

        @Override
        public void destroy() {
            // do something
        }

        @Override
        public int getOrder() {
            return -100;
        }
    }


    import org.springframework.context.annotation.ComponentScan;
    import org.springframework.context.annotation.Configuration;

    @Configuration
    @ComponentScan
    public class MyAutoConfiguration {

        @Bean
        public MyFilter myFilter() {
            return new MyFilter();
        }
    }

It does not natively, but you certainly can add this functionality

<script type="text/javascript">

String.prototype.regexIndexOf = function( pattern, startIndex )
{
    startIndex = startIndex || 0;
    var searchResult = this.substr( startIndex ).search( pattern );
    return ( -1 === searchResult ) ? -1 : searchResult + startIndex;
}

String.prototype.regexLastIndexOf = function( pattern, startIndex )
{
    startIndex = startIndex === undefined ? this.length : startIndex;
    var searchResult = this.substr( 0, startIndex ).reverse().regexIndexOf( pattern, 0 );
    return ( -1 === searchResult ) ? -1 : this.length - ++searchResult;
}

String.prototype.reverse = function()
{
    return this.split('').reverse().join('');
}

// Indexes 0123456789
var str = 'caabbccdda';

alert( [
        str.regexIndexOf( /[cd]/, 4 )
    ,   str.regexLastIndexOf( /[cd]/, 4 )
    ,   str.regexIndexOf( /[yz]/, 4 )
    ,   str.regexLastIndexOf( /[yz]/, 4 )
    ,   str.lastIndexOf( 'd', 4 )
    ,   str.regexLastIndexOf( /d/, 4 )
    ,   str.lastIndexOf( 'd' )
    ,   str.regexLastIndexOf( /d/ )
    ]
);

</script>

I didn't fully test these methods, but they seem to work so far.

You can see some reports in SSMS:

Right-click the instance name / reports / standard / top sessions

You can see top CPU consuming sessions. This may shed some light on what SQL processes are using resources. There are a few other CPU related reports if you look around. I was going to point to some more DMVs but if you've looked into that already I'll skip it.

You can use sp_BlitzCache to find the top CPU consuming queries. You can also sort by IO and other things as well. This is using DMV info which accumulates between restarts.

This article looks promising.

Some stackoverflow goodness from Mr. Ozar.

edit: A little more advice... A query running for 'only' 5 seconds can be a problem. It could be using all your cores and really running 8 cores times 5 seconds - 40 seconds of 'virtual' time. I like to use some DMVs to see how many executions have happened for that code to see what that 5 seconds adds up to.

Supplemental answer

Given an OnTouchListener

private View.OnTouchListener handleTouch = new View.OnTouchListener() {

    @Override
    public boolean onTouch(View v, MotionEvent event) {

        int x = (int) event.getX();
        int y = (int) event.getY();

        switch (event.getAction()) {
            case MotionEvent.ACTION_DOWN:
                Log.i("TAG", "touched down");
                break;
            case MotionEvent.ACTION_MOVE:
                Log.i("TAG", "moving: (" + x + ", " + y + ")");
                break;
            case MotionEvent.ACTION_UP:
                Log.i("TAG", "touched up");
                break;
        }

        return true;
    }
};

set on some view:

myView.setOnTouchListener(handleTouch);

This gives you the touch event coordinates relative to the view that has the touch listener assigned to it. The top left corner of the view is (0, 0). If you move your finger above the view, then y will be negative. If you move your finger left of the view, then x will be negative.

int x = (int)event.getX();
int y = (int)event.getY();

If you want the coordinates relative to the top left corner of the device screen, then use the raw values.

int x = (int)event.getRawX();
int y = (int)event.getRawY();

Related

• How are Android touch events delivered?

Try this it will work, it's better create a procedure, if procedure is not possible you can use this script.

with param AS(
SELECT 1234 empid
FROM dual)
 SELECT *
  FROM Employees, param
  WHERE EmployeeID = param.empid;
END;

You can also create the application.properties file manually.

SpringApplication will load properties from application.properties files in the following locations and add them to the Spring Environment:

• A /config subdirectory of the current directory.
• The current directory
• A classpath /config package
• The classpath root

The list is ordered by precedence (properties defined in locations higher in the list override those defined in lower locations). (From the Spring boot features external configuration doc page)

So just go ahead and create it

Installing XCode requires:

• Enrolling on the Apple website (not fun)
• Downloading a 4.7G installer

To install g++ *WITHOUT* having to download the MASSIVE 4.7G xCode install, try this package:

https://github.com/kennethreitz/osx-gcc-installer

The DMG files linked on that page are ~270M and much quicker to install. This was perfect for me, getting homebrew up and running with a minimum of hassle.

The github project itself is basically a script that repackages just the critical chunks of xCode for distribution. In order to run that script and build the DMG files, you'd need to already have an XCode install, which would kind of defeat the point, so the pre-built DMG files are hosted on the project page.

Another resolution for this problem is to add z-index: 0; to .modal-backdrop class in your bootstrap-dialog.css file if you don't want to modify bootstrap.css.

Here's another way using sink:

sink(sink_dir_and_file_name); print(yourList); sink()

This solved for me,

$old = '18-04-2018';
$new = date('Y-m-d', strtotime($old));
echo $new;

Output : 2018-04-18

To print the address of a variable, you need to use the %p format. %d is for signed integers. For example:

#include<stdio.h>

void main(void)
{
  int a;

  printf("Address is %p:",&a);
}

With pandas >= 1.0 there is now a dedicated string datatype:

1) You can convert your column to this pandas string datatype using .astype('string'):

df['zipcode'] = df['zipcode'].astype('string')

2) This is different from using str which sets the pandas object datatype:

df['zipcode'] = df['zipcode'].astype(str)

3) For changing into categorical datatype use:

df['zipcode'] = df['zipcode'].astype('category')

You can see this difference in datatypes when you look at the info of the dataframe:

df = pd.DataFrame({
    'zipcode_str': [90210, 90211] ,
    'zipcode_string': [90210, 90211],
    'zipcode_category': [90210, 90211],
})

df['zipcode_str'] = df['zipcode_str'].astype(str)
df['zipcode_string'] = df['zipcode_str'].astype('string')
df['zipcode_category'] = df['zipcode_category'].astype('category')

df.info()

# you can see that the first column has dtype object
# while the second column has the new dtype string
# the third column has dtype category
 #   Column            Non-Null Count  Dtype   
---  ------            --------------  -----   
 0   zipcode_str       2 non-null      object  
 1   zipcode_string    2 non-null      string  
 2   zipcode_category  2 non-null      category
dtypes: category(1), object(1), string(1)

The 'string' extension type solves several issues with object-dtype NumPy arrays:

1. You can accidentally store a mixture of strings and non-strings in an object dtype array. A StringArray can only store strings.

2. object dtype breaks dtype-specific operations like DataFrame.select_dtypes(). There isn’t a clear way to select just text while excluding non-text, but still object-dtype columns.

3. When reading code, the contents of an object dtype array is less clear than string.
   

More info on working with the new string datatype can be found here: https://pandas.pydata.org/pandas-docs/stable/user_guide/text.html

As zmorris points driver.getPageSource().contains("input"); is not the proper solution because it searches in all the html, not only the texts on it. I suggest to check this question: how can I check if some text exist or not in the page? and the recomended way explained by Slanec:

String bodyText = driver.findElement(By.tagName("body")).getText();
Assert.assertTrue("Text not found!", bodyText.contains(text));

Index the list then the dict.

print L[1]['d']

In addition with skaffman answer, simple if-else you can use ternary operator like this

<c:set value="34" var="num"/>
<c:out value="${num % 2 eq 0 ? 'even': 'odd'}"/>

Very annoying, no cookie file exmpale on the official website https://ec.haxx.se/http/http-cookies.

Finnaly, I find it does not work, if your file content is just copyied like this

foo1=bar;foo2=bar2

I gusess the format must looks the style said by @Agustí Sánchez . You can test it by -c to create a cookie file on a website.

So try this way, it works

curl -H "Cookie:`cat ./my.cookie`"   http://xxxx.com

You can just copy the cookie from chrome console network tab.

git branch --merged | grep -Ev '^(. master|\*)' | xargs -n 1 git branch -d will delete all local branches except the current checked out branch and/or master.

Here's a helpful article for those looking to understand these commands: Git Clean: Delete Already Merged Branches, by Steven Harman.

Eclipse PyDev plugin.

http://pydev.sourceforge.net/

Add the right lines this way and and the horizontal borders using HR or border-bottom or .col-right-line:after. Don't forget media queries to get rid of the lines on small devices.

.col-right-line:before {
  position: absolute;
  content: " ";
  top: 0;
  right: 0;
  height: 100%;
  width: 1px;
  background-color: @color-neutral;
}

If I'm not mistaken, the following does what was asked without the memory problems of the transpose solution and with fewer lines than @kalu 's function, keeping the first of any similarly named columns.

Cols = list(df.columns)
for i,item in enumerate(df.columns):
    if item in df.columns[:i]: Cols[i] = "toDROP"
df.columns = Cols
df = df.drop("toDROP",1)

In spring 4 it's very easy you don't need to make any changes in beans. Only mark your return type to @ResponseBody.

Example:-

@RequestMapping(value = "/image/{id}")
    public @ResponseBody
    byte[] showImage(@PathVariable Integer id) {
                 byte[] b;
        /* Do your logic and return 
               */
        return b;
    }

The question does not contain a nested loop, just a single loop. But THIS nested version works, too:

# for i in c d; do for j in a b; do echo $i $j; done; done
c a
c b
d a
d b

Check this below code, it works

#define MAX_BYTE_RANGE 255

template <typename T>
class string
{
public:
    typedef char *pointer;
    typedef const char *const_pointer;
    typedef __gnu_cxx::__normal_iterator<pointer, string> iterator;
    typedef __gnu_cxx::__normal_iterator<const_pointer, string> const_iterator;

    string() : length(0)
    {
    }
    size_t size() const
    {
        return length;
    }
    void operator=(const_pointer value)
    {
        if (value == nullptr)
            throw std::invalid_argument("value cannot be null");
        auto count = strlen(value);
        if (count > 0)
            _M_copy(value, count);
    }
    void operator=(const string &value)
    {
        if (value.length != 0)
            _M_copy(value.buf, value.length);
    }
    iterator begin()
    {
        return iterator(buf);
    }
    iterator end()
    {
        return iterator(buf + length);
    }
    const_iterator begin() const
    {
        return const_iterator(buf);
    }
    const_iterator end() const
    {
        return const_iterator(buf + length);
    }
    const_pointer c_str() const
    {
        return buf;
    }
    ~string()
    {
    }

private:
    unsigned char length;
    T buf[MAX_BYTE_RANGE];

    void _M_copy(const_pointer value, size_t count)
    {
        memcpy(buf, value, count);
        length = count;
    }
};

You can use /start /max [your batch] it will fill the screen with the program it oppose to /min

This code works in Linux (C++11, geany, g++ 7.4.0):

#include <iostream>

using namespace std;


int utf8_to_unicode(string utf8_code);
string unicode_to_utf8(int unicode);


int main()
{
    cout << unicode_to_utf8(36) << '\t';
    cout << unicode_to_utf8(162) << '\t';
    cout << unicode_to_utf8(8364) << '\t';
    cout << unicode_to_utf8(128578) << endl;

    cout << unicode_to_utf8(0x24) << '\t';
    cout << unicode_to_utf8(0xa2) << '\t';
    cout << unicode_to_utf8(0x20ac) << '\t';
    cout << unicode_to_utf8(0x1f642) << endl;

    cout << utf8_to_unicode("$") << '\t';
    cout << utf8_to_unicode("¢") << '\t';
    cout << utf8_to_unicode("€") << '\t';
    cout << utf8_to_unicode("") << endl;

    cout << utf8_to_unicode("\x24") << '\t';
    cout << utf8_to_unicode("\xc2\xa2") << '\t';
    cout << utf8_to_unicode("\xe2\x82\xac") << '\t';
    cout << utf8_to_unicode("\xf0\x9f\x99\x82") << endl;

    return 0;
}


int utf8_to_unicode(string utf8_code)
{
    unsigned utf8_size = utf8_code.length();
    int unicode = 0;

    for (unsigned p=0; p<utf8_size; ++p)
    {
        int bit_count = (p? 6: 8 - utf8_size - (utf8_size == 1? 0: 1)),
            shift = (p < utf8_size - 1? (6*(utf8_size - p - 1)): 0);

        for (int k=0; k<bit_count; ++k)
            unicode += ((utf8_code[p] & (1 << k)) << shift);
    }

    return unicode;
}


string unicode_to_utf8(int unicode)
{
    string s;

    if (unicode>=0 and unicode <= 0x7f)  // 7F(16) = 127(10)
    {
        s = static_cast<char>(unicode);

        return s;
    }
    else if (unicode <= 0x7ff)  // 7FF(16) = 2047(10)
    {
        unsigned char c1 = 192, c2 = 128;

        for (int k=0; k<11; ++k)
        {
            if (k < 6)  c2 |= (unicode % 64) & (1 << k);
            else c1 |= (unicode >> 6) & (1 << (k - 6));
        }

        s = c1;    s += c2;

        return s;
    }
    else if (unicode <= 0xffff)  // FFFF(16) = 65535(10)
    {
        unsigned char c1 = 224, c2 = 128, c3 = 128;

        for (int k=0; k<16; ++k)
        {
            if (k < 6)  c3 |= (unicode % 64) & (1 << k);
            else if (k < 12) c2 |= (unicode >> 6) & (1 << (k - 6));
            else c1 |= (unicode >> 12) & (1 << (k - 12));
        }

        s = c1;    s += c2;    s += c3;

        return s;
    }
    else if (unicode <= 0x1fffff)  // 1FFFFF(16) = 2097151(10)
    {
        unsigned char c1 = 240, c2 = 128, c3 = 128, c4 = 128;

        for (int k=0; k<21; ++k)
        {
            if (k < 6)  c4 |= (unicode % 64) & (1 << k);
            else if (k < 12) c3 |= (unicode >> 6) & (1 << (k - 6));
            else if (k < 18) c2 |= (unicode >> 12) & (1 << (k - 12));
            else c1 |= (unicode >> 18) & (1 << (k - 18));
        }

        s = c1;    s += c2;    s += c3;    s += c4;

        return s;
    }
    else if (unicode <= 0x3ffffff)  // 3FFFFFF(16) = 67108863(10)
    {
        ;  // actually, there are no 5-bytes unicodes
    }
    else if (unicode <= 0x7fffffff)  // 7FFFFFFF(16) = 2147483647(10)
    {
        ;  // actually, there are no 6-bytes unicodes
    }
    else  ;  // incorrect unicode (< 0 or > 2147483647)

    return "";
}

More:

• https://sites.google.com/view/technik-informatyk-nysa/porady/porady-c-cpp#h.p_lz0skneGFILy
• https://en.wikipedia.org/wiki/UTF-8

I had this error and found the reason for the error in my case. I'm still answering to this old post because it ranks pretty high on Google.

The variables of both of the column I wanted to link were integers but one of the ints had 'unsigned' checked on. Simply un-checking that fixed my error.

I had been facing this problem for two days and I found that the directory you create in Oracle also needs to created first on your physical disk.

I didn't find this point mentioned anywhere i tried to look up the solution to this.

Example

If you created a directory, let's say, 'DB_DIR'.

CREATE OR REPLACE DIRECTORY DB_DIR AS 'E:\DB_WORKS';

Then you need to ensure that DB_WORKS exists in your E:\ drive and also file system level Read/Write permissions are available to the Oracle process.

My understanding of UTL_FILE from my experiences is given below for this kind of operation.

UTL_FILE is an object under SYS user. GRANT EXECUTE ON SYS.UTL_FILE TO PUBLIC; needs to given while logged in as SYS. Otherwise, it will give declaration error in procedure. Anyone can create a directory as shown:- CREATE OR REPLACE DIRECTORY DB_DIR AS 'E:\DBWORKS'; But CREATE DIRECTORY permission should be in place. This can be granted as shown:- GRANT CREATE ALL DIRECTORY TO user; while logged in as SYS user. However, if this needs to be used by another user, grants need to be given to that user otherwise it will throw error. GRANT READ, WRITE, EXECUTE ON DB_DIR TO user; while loggedin as the user who created the directory. Then, compile your package. Before executing the procedure, ensure that the Directory exists physically on your Disk. Otherwise it will throw 'Invalid File Operation' error. (V. IMPORTANT) Ensure that Filesystem level Read/Write permissions are in place for the Oracle process. This is separate from the DB level permissions granted.(V. IMPORTANT) Execute procedure. File should get populated with the result set of your query.

php's email() function hands the email over to a underlying mail transfer agent which is usually postfix on linux systems

so the preferred method on linux is to configure your postfix to use a relayhost, which is done by a line of

relayhost = smtp.example.com

in /etc/postfix/main.cf

however in the OP's scenario I somehow suspect that it's a job that his hosting team should have done

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.

My solution is similar to Payam's, except I am using

//older code
//postman.setGlobalVariable("currentDate", new Date().toLocaleDateString());
pm.globals.set("currentDate", new Date().toLocaleDateString());

If you hit the "3 dots" on the folder and click "Edit"

Then set Pre-Request Scripts for the all calls, so the global variable is always available.

This is quick-and-dirty (and not formally valid HTML5), but it seems to work -- and it is inline as per the question:

<table border='1' style='border-collapse:collapse'>

No further styling of <tr>/<td> tags is required (for a basic table grid).

I use the below code in my apps. This shows exactly email client apps, such as Gmail.

    Intent contactIntent = new Intent(Intent.ACTION_SENDTO, Uri.fromParts("mailto", getString(R.string.email_to), null));
    contactIntent.putExtra(Intent.EXTRA_SUBJECT, getString(R.string.email_subject));
    startActivity(Intent.createChooser(contactIntent, getString(R.string.email_chooser)));

Try this instead.

<Window x:Class="BuildAssistantUI.BuildAssistantWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:VM="clr-namespace:BuildAssistantUI.ViewModels">
    <Window.DataContext>
        <VM:MainViewModel />
    </Window.DataContext>
</Window>

I've reworked VonC's script to do everything automatically and not ask me for anything. You give it two commit SHA1s and it will squash everything between them into one commit named "squashed history":

#!/bin/sh
# Go back to the last commit that we want
# to form the initial commit (detach HEAD)
git checkout $2

# reset the branch pointer to the initial commit (= $1),
# but leaving the index and working tree intact.
git reset --soft $1

# amend the initial tree using the tree from $2
git commit --amend -m "squashed history"

# remember the new commit sha1
TARGET=`git rev-list HEAD --max-count=1`

# go back to the original branch (assume master for this example)
git checkout master

# Replay all the commits after $2 onto the new initial commit
git rebase --onto $TARGET $2

You can use filter for that

function removeNumber(arr, num){
    return arr.filter(el => {return el !== num});
 }

 let numbers = [1,2,3,4];
 numbers = removeNumber(numbers, 3);
 console.log(numbers); // [1,2,4]

Check the server configuration and folders' routes:

1. Open servers view (Window -> Open view... -> Others... -> Search for 'servers'.

2. Right click on server (mine is Tomcat v6.0) -> properties -> Click on 'Swicth Location' (check that location's like /servers...

3. Double click on the server. This will open a new servers page. In the 'Servers Locations' area, check the 'Use Tomcat Installation (takes control of Tomcat Installation)' option.

4. Restart your server.

5. Enjoy!

If you are using non-parallel direct path loads then consider and benchmark not dropping the indexes at all, particularly if the indexes only cover a minority of the columns. Oracle has a mechanism for efficient maintenance of indexes on direct path loads.

Otherwise, I'd also advise making the indexes unusable instead of dropping them. Less chance of accidentally not recreating an index.

The obvious way would be to call the function like this

print(string("Yo!"));

Try including stdint.h or inttypes.h.

The other answer is very complete, but here is a rule of thumb:

• call is blocking:

  call('notepad.exe')
  print('hello')  # only executed when notepad is closed
  

• Popen is non-blocking:

  Popen('notepad.exe')
  print('hello')  # immediately executed
  

Try the following:

Uninstall-Package Newtonsoft.Json -Force

Followed by:

Install-Package Newtonsoft.Json -Version <press tab key for autocomplete>

This error occurs when you clone a repo using a call like:

git clone git://github.com/....git

This essentially sets you up as a pull-only user, who can't push up changes.

I fixed this by opening my repo's .git/config file and changing the line:

[remote "origin"]
    url = git://github.com/myusername/myrepo.git

to:

[remote "origin"]
    url = ssh+git://[email protected]/myusername/myrepo.git

This ssh+git protocol with the git user is the authentication mechanism preferred by Github.

The other answers mentioned here technically work, but they all seem to bypass ssh, requiring you to manually enter a password, which you probably don't want.

Your code could look more like:

<?php
session_start();
$errorMsg = "";
$validUser = $_SESSION["login"] === true;
if(isset($_POST["sub"])) {
  $validUser = $_POST["username"] == "admin" && $_POST["password"] == "password";
  if(!$validUser) $errorMsg = "Invalid username or password.";
  else $_SESSION["login"] = true;
}
if($validUser) {
   header("Location: /login-success.php"); die();
}
?>
<!DOCTYPE html>
<html>
<head>
  <meta http-equiv="content-type" content="text/html;charset=utf-8" />
  <title>Login</title>
</head>
<body>
  <form name="input" action="" method="post">
    <label for="username">Username:</label><input type="text" value="<?= $_POST["username"] ?>" id="username" name="username" />
    <label for="password">Password:</label><input type="password" value="" id="password" name="password" />
    <div class="error"><?= $errorMsg ?></div>
    <input type="submit" value="Home" name="sub" />
  </form>
</body>
</html>

Now, when the page is redirected based on the header('LOCATION:wherever.php), put session_start() at the top of the page and test to make sure $_SESSION['login'] === true. Remember that == would be true if $_SESSION['login'] == 1 as well. Of course, this is a bad idea for security reasons, but my example may teach you a different way of using PHP.

Also works for items with spaces and ignores directories

for f in *; do [[ -f "$f" ]] && mv "$f" "unix_$f"; done

I just used less on top of Cygwin to read a 3GB file, though I ended up using grep to find what I needed in it.

(less is more, but better.)

See this answer for more details on less: https://stackoverflow.com/a/1343576/1005039

SQL Server databases use two files - an MDF file, known as the primary database file, which contains the schema and data, and a LDF file, which contains the logs. See wikipedia. A database may also use secondary database file, which normally uses a .ndf extension.

As John S. indicates, these file extensions are purely convention - you can use whatever you want, although I can't think of a good reason to do that.

More info on MSDN here and in Beginning SQL Server 2005 Administation (Google Books) here.

        <script type="text/javascript">
            function MyFunction() {
                var FNumber = Number(document.getElementById('txtFirstNumber').value);
                var SNumber = Number(document.getElementById("txtSecondNumber").value);
                var Sum = FNumber + SNumber;
                alert(Sum);
            }

        </script>

        <table class="auto-style1">
            <tr>
                <td>FirstNaumber</td>
                <td>
                    <asp:TextBox ID="txtFirstNumber" runat="server"></asp:TextBox>
                </td>
            </tr>
            <tr>
                <td>SecondNumber</td>
                <td>
                    <asp:TextBox ID="txtSecondNumber" runat="server"></asp:TextBox>
                </td>
            </tr>
            <tr>
                <td>&nbsp;</td>
                <td>
                    <asp:TextBox ID="txtSum" runat="server"></asp:TextBox>
                </td>
            </tr>
            <tr>
                <td>&nbsp;</td>
                <td>
                    <asp:Button ID="BtnSubmit" runat="server" Text="Submit" OnClientClick="MyFunction()" />
                </td>
            </tr>
        </table>
    </div>
</form>

The simplest way would be to use FOpen or one of FOpen's Wrappers.

$page = file_get_contents("http://www.domain.com/filename");

This does require FOpen which some web hosts disable and some web hosts will allow FOpen, but not allow access to external files. You may want to check where you are going to run the script to see if you have access to External FOpen.

I stumbled upon this today: Element.redraw() for prototype.js

Using:

Element.addMethods({
  redraw: function(element){
    element = $(element);
    var n = document.createTextNode(' ');
    element.appendChild(n);
    (function(){n.parentNode.removeChild(n)}).defer();
    return element;
  }
});

However, I've noticed sometimes that you must call redraw() on the problematic element directly. Sometimes redrawing the parent element won't solve the problem the child is experiencing.

Good article about the way browsers render elements: Rendering: repaint, reflow/relayout, restyle

I found that a bit hard to understand when reading the dining philosophers' problem, deadlock IMHO is actually related to resource allocation. Would like to share a more simple example where 2 Nurse need to fight for 3 equipment in order to complete a task. Although it's written in java. A simple lock() method is created to simulate how the deadlock happen, so it can apply in other programming language as well. http://www.justexample.com/wp/example-of-deadlock/

Link for adding through JS https://www.youtube.com/watch?v=idyyQ23joy0

Please see the below link as well. This would help you add the rows dynamically on the fly: https://www.lynda.com/C-tutorials/Adding-data-HTML-tables-runtime/161815/366843-4.html

My problem with this one was that I was creating a hibernate session, but had the JNDI settings for my database instance wrong because of a classpath problem. Just FYI...

you can use if statement like below

select CONCAT(if(affiliate_name is null ,'',affiliate_name),'- ',if(model is null ,'',affiliate_name)) as model from devices

I like the build-in pathlib libary because of quick options like directory= Path.cwd() Together with opencv it's quite easy to read pngs to numpy arrays. In this example you can even check the prefix of the image.

from pathlib import Path
import cv2
prefix = "p00"
suffix = ".png"
directory= Path.cwd()
file_names= [subp.name for subp in directory.rglob('*') if  (prefix in subp.name) & (suffix == subp.suffix)]
file_names.sort()
print(file_names)

all_frames= []
for file_name in file_names:
    file_path = str(directory / file_name)
    frame=cv2.imread(file_path)
    all_frames.append(frame)
print(type(all_frames[0]))
print(all_frames[0] [1][1])

Output:

['p000.png', 'p001.png', 'p002.png', 'p003.png', 'p004.png', 'p005.png', 'p006.png', 'p007.png', 'p008.png', 'p009.png']
<class 'numpy.ndarray'>
[255 255 255]

I'm not using CentOS. Here is what I have in Ubuntu 16.04.2, hadoop-2.7.3, jdk1.8.0_121. Run start-dfs.sh or stop-dfs.sh successfully w/o error:

# JAVA env
#
export JAVA_HOME=/j01/sys/jdk
export JRE_HOME=/j01/sys/jdk/jre

export PATH=${JAVA_HOME}/bin:${JRE_HOME}/bin:${PATH}:.

# HADOOP env
#
export HADOOP_HOME=/j01/srv/hadoop
export HADOOP_MAPRED_HOME=$HADOOP_HOME
export HADOOP_COMMON_HOME=$HADOOP_HOME
export HADOOP_HDFS_HOME=$HADOOP_HOME
export YARN_HOME=$HADOOP_HOME

export HADOOP_CONF_DIR=$HADOOP_HOME/etc/hadoop
export PATH=$PATH:$HADOOP_HOME/sbin:$HADOOP_HOME/bin

Replace /j01/sys/jdk, /j01/srv/hadoop with your installation path

I also did the following for one time setup on Ubuntu, which eliminates the need to enter passwords for multiple times when running start-dfs.sh:

sudo apt install openssh-server openssh-client
ssh-keygen -t rsa
ssh-copy-id user@localhost

Replace user with your username

I am a beginner myself and I honestly couldn't find a satisfactory answer that I could understand or implement.

So here's an external link that I really helped me achieved what I wanted. It's very straight forward and easy to follow as well.

http://www.helloandroid.com/tutorials/how-display-custom-dialog-your-android-application

THIS WHAT I TRIED TO ACHIEVE WITH THE CODE:

I have a MainActivity that hosts a Fragment. I wanted a dialog to appear on top of the layout to ask for user input and then process the input accordingly. See a screenshot

Here's what the onCreateView of my fragment looks

@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {

    View rootView = inflater.inflate(R.layout.fragment_home_activity, container, false);

    Button addTransactionBtn = rootView.findViewById(R.id.addTransactionBtn);

    addTransactionBtn.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            Dialog dialog = new Dialog(getActivity());
            dialog.setContentView(R.layout.dialog_trans);
            dialog.setTitle("Add an Expense");
            dialog.setCancelable(true);

            dialog.show();

        }
    });

I hope it will help you

Let me know if there's any confusion. :)

This is not possible from HTML on. The closest what you can get is the accept-charset attribute of the <form>. Only MSIE browser adheres that, but even then it is doing it wrong (e.g. CP1252 is actually been used when it says that it has sent ISO-8859-1). Other browsers are fully ignoring it and they are using the charset as specified in the Content-Type header of the response. Setting the character encoding right is basically fully the responsiblity of the server side. The client side should just send it back in the same charset as the server has sent the response in.

To the point, you should really configure the character encoding stuff entirely from the server side on. To overcome the inability to edit URIEncoding attribute, someone here on SO wrote a (complex) filter: Detect the URI encoding automatically in Tomcat. You may find it useful as well (note: I haven't tested it).

Update: Noted should be that the meta tag as given in your question is ignored when the content is been transferred over HTTP. Instead, the HTTP response Content-Type header will be used to determine the content type and character encoding. You can determine the HTTP header with for example Firebug, in the Net panel.

I have gone through many links but this answer helped me alot:

$scope.redirectPage = function (data) { $window.open(data, "popup", "width=1000,height=700,left=300,top=200"); };

** data will be absolute url which you are hitting.

Is there any equivalent for the truststore? How can I view the trusted certificates?

Yes there is.The exact same command since keystore and truststore differ only in what they store i.e. private key or signed public key (certificate)

No other difference

I handle the ajax request by using Selenium and the Firefox web driver. It is not that fast if you need the crawler as a daemon, but much better than any manual solution. I wrote a short tutorial here for reference

These are all of the vaules I am aware of. Please help udating the array if you know of any other values.

function ismobile(){
   if(/android|webos|iphone|ipad|ipod|blackberry|opera mini|Windows Phone|iemobile|WPDesktop|XBLWP7/i.test(navigator.userAgent.toLowerCase())) {
       return true;
   }
   else
    return false;
}

I prefer this. This is not the best way, but a fast solution.

//Building the table includes:
StringBuilder query= new StringBuilder();
query.append("CREATE TABLE "+TABLE_NAME+ " (");
query.append(COLUMN_ID+"int primary key autoincrement,");
query.append(COLUMN_CREATION_DATE+" DATE)");

//Inserting the data includes this:
SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");
values.put(COLUMN_CREATION_DATE,dateFormat.format(reactionGame.getCreationDate())); 

// Fetching the data includes this:
try {
   java.util.Date creationDate = dateFormat.parse(cursor.getString(0);
   YourObject.setCreationDate(creationDate));
} catch (Exception e) {
   YourObject.setCreationDate(null);
}

Many answers focus on how to make your solution work, while very few suggest that your solution is a very bad approach. If you really want to "practice to learn", why not practice using good solutions? Hardcoding your password is learning the wrong approach!

If what you really want is a password-less mount for that volume, maybe sudo isn't needed at all! So may I suggest other approaches?

• Use /etc/fstab as mensi suggested. Use options user and noauto to let regular users mount that volume.

• Use Polkit for passwordless actions: Configure a .policy file for your script with <allow_any>yes</allow_any> and drop at /usr/share/polkit-1/actions

• Edit /etc/sudoers to allow your user to use sudo without typing your password. As @Anders suggested, you can restrict such usage to specific commands, thus avoiding unlimited passwordless root priviledges in your account. See this answer for more details on /etc/sudoers.

All the above allow passwordless root privilege, none require you to hardcode your password. Choose any approach and I can explain it in more detail.

As for why it is a very bad idea to hardcode passwords, here are a few good links for further reading:

• Why You Shouldn’t Hard Code Your Passwords When Programming
• How to keep secrets secret (Alternatives to Hardcoding Passwords)
• What's more secure? Hard coding credentials or storing them in a database?
• Use of hard-coded credentials, a dangerous programming error: CWE
• Hard-coded passwords remain a key security flaw

To bring the existing answers together with an important clarification:

As stated, the problem with NAME=sam echo "$NAME" is that $NAME gets expanded by the current shell before assignment NAME=sam takes effect.

Solutions that preserve the original semantics (of the (ineffective) solution attempt NAME=sam echo "$NAME"):

Use either eval^[1] (as in the question itself), or printenv (as added by Aaron McDaid to heemayl's answer), or bash -c (from Ljm Dullaart's answer), in descending order of efficiency:

NAME=sam eval 'echo "$NAME"'  # use `eval` only if you fully control the command string
NAME=sam printenv NAME
NAME=sam bash -c 'echo "$NAME"'

^{printenv is not a POSIX utility, but it is available on both Linux and macOS/BSD.}

What this style of invocation (<var>=<name> cmd ...) does is to define NAME:

• as an environment variable
• that is only defined for the command being invoked.

In other words: NAME only exists for the command being invoked, and has no effect on the current shell (if no variable named NAME existed before, there will be none after; a preexisting NAME variable remains unchanged).

POSIX defines the rules for this kind of invocation in its Command Search and Execution chapter.

The following solutions work very differently (from heemayl's answer):

NAME=sam; echo "$NAME"
NAME=sam && echo "$NAME"

While they produce the same output, they instead define:

• a shell variable NAME (only) rather than an environment variable
  • if echo were a command that relied on environment variable NAME, it wouldn't be defined (or potentially defined differently from earlier).
• that lives on after the command.

Note that every environment variable is also exposed as a shell variable, but the inverse is not true: shell variables are only visible to the current shell and its subshells, but not to child processes, such as external utilities and (non-sourced) scripts (unless they're marked as environment variables with export or declare -x).

^{[1] Technically, bash is in violation of POSIX here (as is zsh): Since eval is a special shell built-in, the preceding NAME=sam assignment should cause the the variable $NAME to remain in scope after the command finishes, but that's not what happens.
However, when you run bash in POSIX compatibility mode, it is compliant.
dash and ksh are always compliant.
The exact rules are complicated, and some aspects are left up to the implementations to decide; again, see Command Search and Execution.
Also, the usual disclaimer applies: Use eval only on input you fully control or implicitly trust.}

Vikas answer works perfectly for me, here I also add support for the delay (show / hide).

var popover = $('#example');
var options = {
    animation : true,
    html: true,
    trigger: 'manual',
    placement: 'right',
    delay: {show: 500, hide: 100}
};   
popover
    .popover(options)
    .on("mouseenter", function () {

        var t = this;
        var popover = $(this);    
        setTimeout(function () {

            if (popover.is(":hover")) {

                popover.popover("show");
                popover.siblings(".popover").on("mouseleave", function () {
                    $(t).popover('hide');
                });
            }
        }, options.delay.show);
    })
    .on("mouseleave", function () {
        var t = this;
        var popover = $(this);

        setTimeout(function () {
            if (popover.siblings(".popover").length && !popover.siblings(".popover").is(":hover")) {
                $(t).popover("hide")
            }
        }, options.delay.hide);
    });     

Also please pay attention I changed:

if (!$(".popover:hover").length) {

with:

if (popover.siblings(".popover").length && !popover.siblings(".popover").is(":hover")) {

so that it references exactly at that opened popover, and not any other (since now, through the delay, more than 1 could be open at the same time)

In jQuery 1.2 and newer you no longer have to position the element absolutely; you can use normal relative positioning and use += or -= to add to or subtract from properties, e.g.

$("#startAnimation").click(function(){
    $(".toBeAnimated").animate({ 
        marginLeft: "+=250px",
    }, 1000 );
});

And to echo the guy who answered first's advice: Javascript is not performant. Don't overuse animations, or expect things than run nice and fast on your high performance PC on Chrome to look good on a bog-standard PC running IE. Test it, and make sure it degrades well!

Try the code below:

$ python
>>> class Container(object):
...     pass 
...
>>> x = Container()
>>> x.a = 10
>>> x.b = 20
>>> x.banana = 100
>>> x.a, x.b, x.banana
(10, 20, 100)
>>> dir(x)
['__class__', '__delattr__', '__dict__', '__doc__', '__format__', 
'__getattribute__', '__hash__', '__init__', '__module__', '__new__',
'__reduce__', '__reduce_ex__', '__repr__', '__setattr__',     '__sizeof__', 
'__str__', '__subclasshook__', '__weakref__', 'a', 'b', 'banana']

IF you want to derive usg Boolean true False need to add "[]" around value

<form [formGroup]="form">
  <input type="radio" [value]=true formControlName="gender" >Male
  <input type="radio" [value]=false formControlName="gender">Female
</form>

If you're using executeScalar:

cmd.ExecuteScalar();
result_id=cmd.LastInsertedId.ToString();

If you have a numpy array you can do this:

import numpy as np
from matplotlib import pyplot as plt

data = np.array([
    [1, 2],
    [2, 3],
    [3, 6],
])
x, y = data.T
plt.scatter(x,y)
plt.show()

If your system supports the arc4random family of functions I would recommend using those instead the standard rand function.

The arc4random family includes:

uint32_t arc4random(void)
void arc4random_buf(void *buf, size_t bytes)
uint32_t arc4random_uniform(uint32_t limit)
void arc4random_stir(void)
void arc4random_addrandom(unsigned char *dat, int datlen)

arc4random returns a random 32-bit unsigned integer.

arc4random_buf puts random content in it's parameter buf : void *. The amount of content is determined by the bytes : size_t parameter.

arc4random_uniform returns a random 32-bit unsigned integer which follows the rule: 0 <= arc4random_uniform(limit) < limit, where limit is also an unsigned 32-bit integer.

arc4random_stir reads data from /dev/urandom and passes the data to arc4random_addrandom to additionally randomize it's internal random number pool.

arc4random_addrandom is used by arc4random_stir to populate it's internal random number pool according to the data passed to it.

If you do not have these functions, but you are on Unix, then you can use this code:

/* This is C, not C++ */
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <unistd.h>
#include <stdlib.h> /* exit */
#include <stdio.h> /* printf */

int urandom_fd = -2;

void urandom_init() {
  urandom_fd = open("/dev/urandom", O_RDONLY);

  if (urandom_fd == -1) {
    int errsv = urandom_fd;
    printf("Error opening [/dev/urandom]: %i\n", errsv);
    exit(1);
  }
}

unsigned long urandom() {
  unsigned long buf_impl;
  unsigned long *buf = &buf_impl;

  if (urandom_fd == -2) {
    urandom_init();
  }

  /* Read sizeof(long) bytes (usually 8) into *buf, which points to buf_impl */
  read(urandom_fd, buf, sizeof(long));
  return buf_impl;
}

The urandom_init function opens the /dev/urandom device, and puts the file descriptor in urandom_fd.

The urandom function is basically the same as a call to rand, except more secure, and it returns a long (easily changeable).

However, /dev/urandom can be a little slow, so it is recommended that you use it as a seed for a different random number generator.

If your system does not have a /dev/urandom, but does have a /dev/random or similar file, then you can simply change the path passed to open in urandom_init. The calls and APIs used in urandom_init and urandom are (I believe) POSIX-compliant, and as such, should work on most, if not all POSIX compliant systems.

Notes: A read from /dev/urandom will NOT block if there is insufficient entropy available, so values generated under such circumstances may be cryptographically insecure. If you are worried about that, then use /dev/random, which will always block if there is insufficient entropy.

If you are on another system(i.e. Windows), then use rand or some internal Windows specific platform-dependent non-portable API.

Wrapper function for urandom, rand, or arc4random calls:

#define RAND_IMPL /* urandom(see large code block) | rand | arc4random */

int myRandom(int bottom, int top){
    return (RAND_IMPL() % (top - bottom)) + bottom;
}

One possible way is to do something like this:

public class MyThread extends Thread {
    @Override
    public void run() {
        while (!this.isInterrupted()) {
            //
        }
    }
}

And when you want to stop your thread, just call a method interrupt():

myThread.interrupt();

Of course, this won't stop thread immediately, but in the following iteration of the loop above. In the case of downloading, you need to write a non-blocking code. It means, that you will attempt to read new data from the socket only for a limited amount of time. If there are no data available, it will just continue. It may be done using this method from the class Socket:

mySocket.setSoTimeout(50);

In this case, timeout is set up to 50 ms. After this time has gone and no data was read, it throws an SocketTimeoutException. This way, you may write iterative and non-blocking thread, which may be killed using the construction above.

It's not possible to kill thread in any other way and you've to implement such a behavior yourself. In past, Thread had some method (not sure if kill() or stop()) for this, but it's deprecated now. My experience is, that some implementations of JVM doesn't even contain that method currently.

It's explained in great detail in the docs, but I'll try to summarize:

• matching means git push will push all your local branches to the ones with the same name on the remote. This makes it easy to accidentally push a branch you didn't intend to.

• simple means git push will push only the current branch to the one that git pull would pull from, and also checks that their names match. This is a more intuitive behavior, which is why the default is getting changed to this.

This setting only affects the behavior of your local client, and can be overridden by explicitly specifying which branches you want to push on the command line. Other clients can have different settings, it only affects what happens when you don't specify which branches you want to push.

If you are targeting iOS7 and already have the image split into frames you can use animatedImageNamed:duration:.

Let's say you are animating a spinner. Copy all of your frames into the project and name them as follows:

• spinner-1.png
• spinner-2.png
• spinner-3.png
• etc.,

Then create the image via:

[UIImage animatedImageNamed:@"spinner-" duration:1.0f];

From the docs:

This method loads a series of files by appending a series of numbers to the base file name provided in the name parameter. For example, if the name parameter had ‘image’ as its contents, this method would attempt to load images from files with the names ‘image0’, ‘image1’ and so on all the way up to ‘image1024’. All images included in the animated image should share the same size and scale.

I am using AngleSharp and have been very satisfied with it.

Here is a simple example how to fetch a page:

var config = Configuration.Default.WithDefaultLoader();
var document = await BrowsingContext.New(config).OpenAsync("https://www.google.com");

And now you have a web page in document variable. Then you can easily access it by LINQ or other methods. For example if you want to get a string value from a HTML table:

var someStringValue = document.All.Where(m =>
        m.LocalName == "td" &&
        m.HasAttribute("class") &&
        m.GetAttribute("class").Contains("pid-1-bid")
    ).ElementAt(0).TextContent.ToString();

To use CSS selectors please see AngleSharp examples.

you have to create an entry inside res/menu,override onCreateOptionsMenu and inflate it

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    MenuInflater inflater = getMenuInflater();
    inflater.inflate(R.menu.yourentry, menu);
    return true;
}

an entry for the menu could be:

<menu xmlns:android="http://schemas.android.com/apk/res/android" >
    <item
        android:id="@+id/action_cart"
        android:icon="@drawable/cart"
        android:orderInCategory="100"
        android:showAsAction="always"/> 
</menu>

.NET 4

string.Join(",", arr)

.NET earlier

string.Join(",", Array.ConvertAll(arr, x => x.ToString()))

It would be

yourTextView.setTypeface(null,Typeface.DEFAULT_BOLD);

and italic should be able to be with replacing Typeface.DEFAULT_BOLD with Typeface.DEFAULT_ITALC.

Let me know how it works.

Using the ${#VAR} syntax will calculate the number of characters in a variable.

https://www.gnu.org/software/bash/manual/bashref.html#Shell-Parameter-Expansion

You need to set line-height.

<div style="border: 1px solid red;">
<span style="font-size: 38px; vertical-align:middle; float:left; line-height: 38px">Hejsan</span>
<span style="font-size: 13px; vertical-align:middle; float:right; line-height: 38px">svejsan</span>
<div style="clear: both;"></div>

http://jsfiddle.net/VBR5J/

As you can see, 01/01/1970 returns 0, which means it is the lowest possible date.

new Date('1970-01-01Z00:00:00:000') //returns Thu Jan 01 1970 01:00:00 GMT+0100 (Central European Standard Time)
new Date('1970-01-01Z00:00:00:000').getTime() //returns 0
new Date('1970-01-01Z00:00:00:001').getTime() //returns 1

I created a button...

This is where you've gone wrong. You haven't created a button, you've created an anchor element. If you had used a button element instead, you wouldn't have this problem:

<button type="button" data-toggle="modal" data-target="#myModal" data-role="disabled">
    Connect
</button>

If you are going to continue using an a element instead, at the very least you should give it a role attribute set to "button" and drop the href attribute altogether:

<a role="button" ...>

Once you've done that you can introduce a piece of JavaScript which calls event.preventDefault() - here with event being your click event.

StringBuilder sb = new StringBuilder();
        SaveFileDialog fileSave = new SaveFileDialog();
        IEnumerable<string> columnNames = tbCifSil.Columns.Cast<DataColumn>().
                                          Select(column => column.ColumnName);
        sb.AppendLine(string.Join(",", columnNames));

        foreach (DataRow row in tbCifSil.Rows)
        {
            IEnumerable<string> fields = row.ItemArray.Select(field =>string.Concat("\"", field.ToString().Replace("\"", "\"\""), "\""));
            sb.AppendLine(string.Join(",", fields));
        }

        fileSave.ShowDialog();
        File.WriteAllText(fileSave.FileName, sb.ToString());

TinyXML can be best for simple XML work but if you need more features then try Xerces from the apache project. Go to the following page to read more about its features.

http://xerces.apache.org/xerces-c/

Install same version javac as your JRE

yum install java-devel

I include #include <conio.h> and then, add getch(); just before the return 0; line. That's what I learnt at school anyway. The methods mentioned above here are quite different I see.

Auto layout is realized by applying constraints on images. Use NSLayoutConstraint. It is possible to implement an ideal and beautiful design on all devices. Please try the code below.

import UIKit

class ViewController: UIViewController {

override func viewDidLoad() {
super.viewDidLoad()

let myImageView:UIImageView = UIImageView()
myImageView.backgroundColor = UIColor.red
myImageView.image = UIImage(named:"sample_dog")!
myImageView.translatesAutoresizingMaskIntoConstraints = false
myImageView.layer.borderColor = UIColor.red.cgColor
myImageView.layer.borderWidth = 10
self.view.addSubview(myImageView)
        
view.removeConstraints(view.constraints)


view.addConstraint(NSLayoutConstraint(
item: myImageView,
attribute: .top,
relatedBy: .equal,
toItem: view,
attribute: .top,
multiplier: 1,
constant:100)
    
)

view.addConstraint(NSLayoutConstraint(
item: myImageView,
attribute: .centerX,
relatedBy: .equal,
toItem: view,
attribute: .centerX,
multiplier: 1,
constant:0)
)
    
view.addConstraint(NSLayoutConstraint(
item: myImageView,
attribute: .height,
relatedBy: .equal,
toItem: view,
attribute: .width,
multiplier: 0.5,
constant:40))
    
view.addConstraint(NSLayoutConstraint(
item: myImageView,
attribute: .width,
relatedBy: .equal,
toItem: view,
attribute: .width,
multiplier: 0.5,
constant:40))
    
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
}
}

Ganesan's answer above is not correct and StackOverflow is not letting me comment or Edit his post. So below is the correct answer. Ganesan has an incorrect facing "[" and is missing the stack isEmpty() check.

The below code will return true if the braces are properly matching.

public static boolean isValidExpression(String expression) {
    Map<Character, Character> openClosePair = new HashMap<Character, Character>();
    openClosePair.put(')', '(');
    openClosePair.put('}', '{');
    openClosePair.put(']', '[');

    Stack<Character> stack = new Stack<Character>();
    for(char ch : expression.toCharArray()) {
        if(openClosePair.containsKey(ch)) {
            if(stack.isEmpty() || stack.pop() != openClosePair.get(ch)) {
                return false;
            }
        } else if(openClosePair.values().contains(ch)) {
            stack.push(ch); 
        }
    }
    return stack.isEmpty();
}

jQuery Mobile now has this built in:

<input type="text" name="clear" id="clear-demo" value="" data-clear-btn="true">

Jquery Mobile API TextInput docs

@RequestMapping is a class level

@GetMapping is a method-level

With sprint Spring 4.3. and up things have changed. Now you can use @GetMapping on the method that will handle the http request. The class-level @RequestMapping specification is refined with the (method-level)@GetMapping annotation

Here is an example:

@Slf4j
@Controller
@RequestMapping("/orders")/* The @Request-Mapping annotation, when applied
                            at the class level, specifies the kind of requests 
                            that this controller handles*/  

public class OrderController {

@GetMapping("/current")/*@GetMapping paired with the classlevel
                        @RequestMapping, specifies that when an 
                        HTTP GET request is received for /order, 
                        orderForm() will be called to handle the request..*/

public String orderForm(Model model) {

model.addAttribute("order", new Order());

return "orderForm";
}
}

Prior to Spring 4.3, it was @RequestMapping(method=RequestMethod.GET)

Extra reading from a book authored by Craig Walls

Wikipedia says:

Method overriding, in object oriented programming, is a language feature that allows a subclass or child class to provide a specific implementation of a method that is already provided by one of its superclasses or parent classes.

In detail, when you have an object foo that has a void hello() function:

class foo {
    virtual void hello(); // Code : printf("Hello!");
}

A child of foo, will also have a hello() function:

class bar : foo {
    // no functions in here but yet, you can call
    // bar.hello()
}

However, you may want to print "Hello Bar!" when hello() function is being called from a bar object. You can do this using override

class bar : foo {
    virtual void hello() override; // Code : printf("Hello Bar!");
}

I moved my Database First DataModel to a different project midway through development. Poor planning (or lack there of) on my part.

Initially I had a solution with one project. Then I added another project to the solution and recreated my Database First DataModel from the Sql Server Dataase.

To fix the problem - MetadataException when using Entity Framework Entity Connection. I copied my the ConnectionString from the new Project Web.Config to the original project Web.Config. However, this occurred after I updated my all the references in the original project to new DataModel project.

I had trouble at first with setting the colors for a WPF applications controls. It appears it does not include System.Windows.Media by default but does include Windows.UI.Xaml.Media, which has some pre-filled colors.

I ended up using the following line of code to get it to work:

grid.Background.SetValue(SolidColorBrush.ColorProperty, Windows.UI.Colors.CadetBlue);

You should be able to change grid.Background to most other controls and then change CadetBlue to any of the other colors it provides.

While Markdown doesn't support color, if you don't need too many, you could always sacrifice some of the supported styles and redefine the related tag using CSS to make it color, and also remove the formatting, or not.

Example:

// resets
s { text-decoration:none; } //strike-through
em { font-style: normal; font-weight: bold; } //italic emphasis


// colors
s { color: green }
em { color: blue }

See also: How to restyle em tag to be bold instead of italic

Then in your markdown text

~~This is green~~
_this is blue_

If you are using Postgres and you have data like '2000 - some sample text' then try substring and position combination, otherwise if in your scenario there is no delimiter, you need to write regex:

SUBSTRING(Column_name from 0 for POSITION('-' in column_name) - 1) as 
number_column_name

The first 2 examples act very differently if you are REPLACING them by something. If you match on this:

str = str.replace(/^(7|8|9)/ig,''); 

you would replace 7 or 8 or 9 by the empty string.

If you match on this

str = str.replace(/^[7|8|9]/ig,''); 

you will replace 7 or 8 or 9 OR THE VERTICAL BAR!!!! by the empty string.

I just found this out the hard way.

Below is the easiest way in case if Anaconda is already installed.

1) Under "Files", there is an option called,"Upload".

2) Click on "Upload" button and it asks for the path of the file and select the file and click on upload button present beside the file.

Watching this course https://app.pluralsight.com/library/courses/angular-2-getting-started-update/discussion

The author explains that new version of JavaScript has for of and for in, the for of is to enumerate objects and the for in is to enumerate the index of the array.

Don't know men. I found the best way for me after testing different ways like 10 minutes. ( Change the numbers in code to get big or small random number.)

    int x;
srand ( time(NULL) );
x = rand() % 1000 * rand() % 10000 ;
cout<<x;

You can use segue like this:

self.performSegueWithIdentifier("push", sender: self)
override func prepareForSegue(segue: UIStoryboardSegue!, sender: AnyObject!) {
    if segue.identifier == "push" {

    }
}

Using generates a try / finally around the object being allocated and calls Dispose() for you.

It saves you the hassle of manually creating the try / finally block and calling Dispose()

This is how I handle this, without using exceptions.

import sys
if sys.version_info.major > 2:  # Python 3 or later
    from urllib.parse import quote
else:  # Python 2
    from urllib import quote

The + operator returns the numeric representation of the object. So in your particular case, it would appear to be predicating the if on whether or not d is a non-zero number.

Reference here. And, as pointed out in comments, here.

If you want to use them as in swift 2, you can use these funcs:

For CGRectMake:

func CGRectMake(_ x: CGFloat, _ y: CGFloat, _ width: CGFloat, _ height: CGFloat) -> CGRect {
    return CGRect(x: x, y: y, width: width, height: height)
}

For CGPointMake:

func CGPointMake(_ x: CGFloat, _ y: CGFloat) -> CGPoint {
    return CGPoint(x: x, y: y)
}

For CGSizeMake:

func CGSizeMake(_ width: CGFloat, _ height: CGFloat) -> CGSize {
    return CGSize(width: width, height: height)
}

Just put them outside any class and it should work. (Works for me at least)

i think, simply camera not initialize in first frame. Try to save image after 10 frames.

In my case there were two jQuery's, for the inner and outer HTML. I had four steps before I could attach inner events:

1. wait for outer jQuery to be ready
2. wait for iframe to load
3. grab inner jQuery
4. wait for inner jQuery to be ready

$(function() {   // 1. wait for the outer jQuery to be ready, aka $(document).ready
    $('iframe#filecontainer').on('load', function() {   // 2. wait for the iframe to load
        var $inner$ = $(this)[0].contentWindow.$;   // 3. get hold of the inner jQuery
        $inner$(function() {   // 4. wait for the inner jQuery to be ready
            $inner$.on('click', function () {   // Now I can intercept inner events.
                // do something
            });
        });
    });
});

The trick is to use the inner jQuery to attach events. Notice how I'm getting the inner jQuery:

        var $inner$ = $(this)[0].contentWindow.$;

I had to bust out of jQuery into the object model for it. The $('iframe').contents() approach in the other answers didn't work in my case because that stays with the outer jQuery. (And by the way returns contentDocument.)

define typedef enum in class header:

typedef enum {
    IngredientType_text  = 0,
    IngredientType_audio = 1,
    IngredientType_video = 2,
    IngredientType_image = 3
} IngredientType;

write a method like this in class:

+ (NSString*)typeStringForType:(IngredientType)_type {
   NSString *key = [NSString stringWithFormat:@"IngredientType_%i", _type];
   return NSLocalizedString(key, nil);
}

have the strings inside Localizable.strings file:

/* IngredientType_text */
"IngredientType_0" = "Text";
/* IngredientType_audio */
"IngredientType_1" = "Audio";
/* IngredientType_video */
"IngredientType_2" = "Video";
/* IngredientType_image */
"IngredientType_3" = "Image";

I would use Celery to handle the asynchronous task for you. You'll need to install a broker to serve as your task queue (RabbitMQ and Redis are recommended).

app.py:

from flask import Flask
from celery import Celery

broker_url = 'amqp://guest@localhost'          # Broker URL for RabbitMQ task queue

app = Flask(__name__)    
celery = Celery(app.name, broker=broker_url)
celery.config_from_object('celeryconfig')      # Your celery configurations in a celeryconfig.py

@celery.task(bind=True)
def some_long_task(self, x, y):
    # Do some long task
    ...

@app.route('/render/<id>', methods=['POST'])
def render_script(id=None):
    ...
    data = json.loads(request.data)
    text_list = data.get('text_list')
    final_file = audio_class.render_audio(data=text_list)
    some_long_task.delay(x, y)                 # Call your async task and pass whatever necessary variables
    return Response(
        mimetype='application/json',
        status=200
    )

Run your Flask app, and start another process to run your celery worker.

$ celery worker -A app.celery --loglevel=debug

I would also refer to Miguel Gringberg's write up for a more in depth guide to using Celery with Flask.

I just realized, I think people shouldn't be exposed to the concept of "static" very early.

Static methods should probably be the exception rather than the norm. Especially early on anyways if you want to learn OOP. (Why start with an exception to the rule?) That's very counter-pedagogical of Java, that the "first" thing you should learn is the public static void main thing. (Few real Java applications have their own main methods anyways.)

document.forms["name of your form"].submit();

or

document.getElementById("form id").submit();

You can try any of this...this will definitely work...

All google chrome extensios crashed and then black screen on the window for my case.. tried uninstall and installed.. but no use..
Finally I restarted the computer.. It worked for me.. And i disabled adblock on google homepage. works pretty cool.

If you are using Eclipse just copying android-support-v7-appcompat.jar to libs folder will not work if you are going to use resources.

Follow steps from here for "Adding libraries with resources".

The 487 Response indicates that the previous request was terminated by user/application action. The most common occurrence is when the CANCEL happens as explained above. But it is also not limited to CANCEL. There are other cases where such responses can be relevant. So it depends on where you are seeing this behavior and whether its a user or application action that caused it.

15.1.2 UAS Behavior==> BYE Handling in RFC 3261

The UAS MUST still respond to any pending requests received for that dialog. It is RECOMMENDED that a 487 (Request Terminated) response be generated to those pending requests.

Here's a way to deep symbolize an object

def symbolize(obj)
    return obj.inject({}){|memo,(k,v)| memo[k.to_sym] =  symbolize(v); memo} if obj.is_a? Hash
    return obj.inject([]){|memo,v    | memo           << symbolize(v); memo} if obj.is_a? Array
    return obj
end

This code will remove your whole cache of the application, You can check on app setting and open the app info and check the size of cache. Once you will use this code your cache size will be 0KB . So it and enjoy the clean cache.

 if (Build.VERSION_CODES.KITKAT <= Build.VERSION.SDK_INT) {
            ((ActivityManager) context.getSystemService(ACTIVITY_SERVICE))
                    .clearApplicationUserData();
            return;
        }

A "connection refused" error happens when you attempt to open a TCP connection to an IP address / port where there is nothing currently listening for connections. If nothing is listening, the OS on the server side "refuses" the connection.

If this is happening intermittently, then the most likely explanations are (IMO):

• the server you are talking ("proxy.xyz.com" / port 60) to is going up and down, OR
• there is something¹ between your client and the proxy that is intermittently sending requests to a non-functioning host, or something.

Is this possible that this exception is caused when a search request is made from Android applications as our website don't support a request is being made from android applications.

It seems unlikely. You said that the "connection refused" exception message says that it is the proxy that is refusing the connection, not your server. Besides if a server was going to not handle certain kinds of request, it still has to accept the TCP connection to find out what the request is ... before it can reject it.

^{1 - For example, it could be a DNS that round-robin resolves the DNS name to different IP addresses. Or it could be an IP-based load balancer.}

From your terminal do:

git config credential.username "prefered username"

OR

git config --global user.name "Firstname Lastname"

MySQL’s generic “errno 150” message “means that a foreign key constraint was not correctly formed.” As you probably already know if you are reading this page, the generic “errno: 150” error message is really unhelpful. However:

You can get the actual error message by running SHOW ENGINE INNODB STATUS; and then looking for LATEST FOREIGN KEY ERROR in the output.

For example, this attempt to create a foreign key constraint:

CREATE TABLE t1
(id INTEGER);

CREATE TABLE t2
(t1_id INTEGER,
 CONSTRAINT FOREIGN KEY (t1_id) REFERENCES t1 (id));

fails with the error Can't create table 'test.t2' (errno: 150). That doesn’t tell anyone anything useful other than that it’s a foreign key problem. But run SHOW ENGINE INNODB STATUS; and it will say:

------------------------
LATEST FOREIGN KEY ERROR
------------------------
130811 23:36:38 Error in foreign key constraint of table test/t2:
FOREIGN KEY (t1_id) REFERENCES t1 (id)):
Cannot find an index in the referenced table where the
referenced columns appear as the first columns, or column types
in the table and the referenced table do not match for constraint.

It says that the problem is it can’t find an index. SHOW INDEX FROM t1 shows that there aren’t any indexes at all for table t1. Fix that by, say, defining a primary key on t1, and the foreign key constraint will be created successfully.

Try checking for the :visible property instead.

if($('#car2').not(':visible'))
{
    alert('car 2 is hidden');       
}

Just a quick check, if you are using client-side templating engine such as handlebars, your js will load after document.ready, hence there will be no element to bind the event to, therefore either use onclick handler or use it on the body and check for current target

Actually, you can, even though accepted answer saying that you can't.

There is a _JAVA_OPTIONS environment variable, more about it here

#input_box {
    margin: 0 auto;
    text-align: left;
}
#div {
    text-align: center;
}

<div id="div">
    <label for="input_box">Input: </label><input type="text" id="input_box" name="input_box" />
</div>

or you could do it using padding, but this is not that great of an idea.

If you want to open Google Maps in a browser:

http://maps.google.com/?q=<lat>,<lng>

To open the Google Maps app on an iOS mobile device, use the Google Maps URL Scheme:

comgooglemaps://?q=<lat>,<lng>

To open the Google Maps app on Android, use the geo: intent:

geo:<lat>,<lng>?z=<zoom>

You can use this:

var token = "SOME_TOKEN";

$.ajaxPrefilter(function (options, originalOptions, jqXHR) {
  jqXHR.setRequestHeader('X-CSRF-Token', token);
});

From documentation:

jQuery.ajaxPrefilter( [dataTypes ], handler(options, originalOptions, jqXHR) )

Description: Handle custom Ajax options or modify existing options before each request is sent and before they are processed by $.ajax().

Read

in this scenario:

DELETE FROM tableA
WHERE (SELECT q.entitynum
FROM tableA q
INNER JOIN tableB u on (u.qlabel = q.entityrole AND u.fieldnum = q.fieldnum) 
WHERE (LENGTH(q.memotext) NOT IN (8,9,10) 
OR q.memotext NOT LIKE '%/%/%')
AND (u.FldFormat = 'Date'));

aren't you missing the column you want to compare to? example:

DELETE FROM tableA
WHERE entitynum in (SELECT q.entitynum
FROM tableA q
INNER JOIN tableB u on (u.qlabel = q.entityrole AND u.fieldnum = q.fieldnum) 
WHERE (LENGTH(q.memotext) NOT IN (8,9,10) 
OR q.memotext NOT LIKE '%/%/%')
AND (u.FldFormat = 'Date'));    

I assume it's that column since in your select statement you're selecting from the same table you're wanting to delete from with that column.

Since bootstrap 4 use div class="form-row" in combination with div class="form-group col-X". X is the width you need. You will get nice inline columns. See fiddle.

<form class="form-horizontal" name="FORMNAME" method="post" action="ACTION" enctype="multipart/form-data">
    <div class="form-group">
        <label class="control-label col-sm-2" for="naam">Naam:&nbsp;*</label>
        <div class="col-sm-10">
            <input type="text" require class="form-control" id="naam" name="Naam" placeholder="Uw naam" value="{--NAAM--}" >
            <div id="naamx" class="form-error form-hidden">Wat is uw naam?</div>
        </div>
    </div>

    <div class="form-row">

        <div class="form-group col-5">
            <label class="control-label col-sm-4" for="telefoon">Telefoon:&nbsp;*</label>
            <div class="col-sm-12">
                <input type="tel" require class="form-control" id="telefoon" name="Telefoon" placeholder="Telefoon nummer" value="{--TELEFOON--}" >
                <div id="telefoonx" class="form-error form-hidden">Wat is uw telefoonnummer?</div>
            </div>
        </div>

        <div class="form-group col-5">
            <label class="control-label col-sm-4" for="email">E-mail: </label>
            <div class="col-sm-12">
                <input type="email" require class="form-control" id="email" name="E-mail" placeholder="E-mail adres" value="{--E-MAIL--}" >
                <div id="emailx" class="form-error form-hidden">Wat is uw e-mail adres?</div>
                    </div>
                </div>

        </div>

    <div class="form-group">
        <label class="control-label col-sm-2" for="titel">Titel:&nbsp;*</label>
        <div class="col-sm-10">
            <input type="text" require class="form-control" id="titel" name="Titel" placeholder="Titel van uw vraag of aanbod" value="{--TITEL--}" >
            <div id="titelx" class="form-error form-hidden">Wat is de titel van uw vraag of aanbod?</div>
        </div>
    </div>
<from>

THis is other method
You can also use setCenter method with add new marker

check below code

$('#my_map').gmap3({
      action: 'setCenter',
      map:{
         options:{
          zoom: 10
         }
      },
      marker:{
         values:
          [
            {latLng:[position.coords.latitude, position.coords.longitude], data:"Netherlands !"}
          ]
      }
   });

Since there is some routine from the the pthread family on the bottom (but I don't know that particular one), my guess would be that you have launched some thread as joinable that has terminated execution.

The exit state information of that thread is kept available until you call pthread_join. Thus, the memory is kept in a loss record at program termination, but it is still reachable since you could use pthread_join to access it.

If this analysis is correct, either launch these threads detached, or join them before terminating your program.

Edit: I ran your sample program (after some obvious corrections) and I don't have errors but the following

==18933== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 4 from 4)
--18933-- 
--18933-- used_suppression:      2 dl-hack3-cond-1
--18933-- used_suppression:      2 glibc-2.5.x-on-SUSE-10.2-(PPC)-2a

Since the dl- thing resembles much of what you see I guess that you see a known problem that has a solution in terms of a suppression file for valgrind. Perhaps your system is not up to date, or your distribution doesn't maintain these things. (Mine is ubuntu 10.4, 64bit)

You can use mysql_errno() for this too.

$result = mysql_query($query);

if(mysql_errno()){
    echo "MySQL error ".mysql_errno().": "
         .mysql_error()."\n<br>When executing <br>\n$query\n<br>";
}

You need to export the User.name field so that the json package can see it. Rename the name field to Name.

package main

import (
    "fmt"
    "encoding/json"
)

type User struct {
    Name string
}

func main() {
    user := &User{Name: "Frank"}
    b, err := json.Marshal(user)
    if err != nil {
        fmt.Println(err)
        return
    }
    fmt.Println(string(b))
}

Output:

{"Name":"Frank"}

One simple way. Edit htaccess

RewriteEngine On
RewriteBase /
RewriteCond %{REQUEST_URI} \.(jpe?g|bmp|png|gif|css|js|mp3|ogg)$ [NC]
RewriteCond %{QUERY_STRING} !^(.+?&v33|)v=33[^&]*(?:&(.*)|)$ [NC]
RewriteRule ^ %{REQUEST_URI}?v=33 [R=301,L]

Here's a method which receives boundaries and returns a random integer. It is slightly more advanced (completely universal): boundaries can be both positive and negative, and minimum/maximum boundaries can come in any order.

int myRand(int i_from, int i_to) {
  return (int)(Math.random() * (Math.abs(i_from - i_to) + 1)) + Math.min(i_from, i_to);
}

In general, it finds the absolute distance between the borders, gets relevant random value, and then shifts the answer based on the bottom border.

The most straigh forward way I found using VisualStudio 2019 to debug an external library to which you are referencing in NuGet, is by taking the following steps:

1. Tools > Options > Debugging > General > Untick 'Enable Just My Code'

2. Go to Assembly Explorer > Open from NuGet Packages Cache

3. Type the NuGet package name you want to debug in the search field & click 'OK'

4. From the Assembly Explorer, right-click on the assembly imported and select 'Generate Pdb'

5. Select a custom path where you want to save the .PDB file and the framework you want this to be generated for

   

6. Copy the .PDB file from the folder generated to your Debug folder and you can now set breakpoints on this assembly's library code

If you're in a .tsx file you cannot just write <T>, but this works:

const foo = <T, >(x: T) => x;

As opposed to the extends {} hack, this hack at least preserves the intent.

$( "#sortable" ).sortable({
    change: function(event, ui) {       
        var pos = ui.helper.index() < ui.placeholder.index() 
            ? { start: ui.helper.index(), end: ui.placeholder.index() }
            : { start: ui.placeholder.index(), end: ui.helper.index() }

        $(this)
            .children().removeClass( 'highlight' )
            .not( ui.helper ).slice( pos.start, pos.end ).addClass( 'highlight' );
    },
    stop: function(event, ui) {
        $(this).children().removeClass( 'highlight' );
    }
});

FIDDLE

An example of how it could be done inside change event without storing arbitrary data into element storage. Since the element where drag starts is ui.helper, and the element of current position is ui.placeholder, we can take the elements between those two indexes and highlight them. Also, we can use this inside handler since it refers to the element that the widget is attached. The example works with dragging in both directions.

You are running Python 2 code on Python 3. In Python 3, the module has been renamed to http.client.

You could try to run the 2to3 tool on your code, and try to have it translated automatically. References to httplib will automatically be rewritten to use http.client instead.

What's wrong with casting primitives?

If you don't want to cast for some reason, you could do

double d = num * 1.0 / denom;

In pandoc, if you use the option --toc in producing html, a table of contents will be produced with links to the sections, and back to the table of contents from the section headings. It is similar with the other formats pandoc writes, like LaTeX, rtf, rst, etc. So with the command

pandoc --toc happiness.txt -o happiness.html

this bit of markdown:

% True Happiness

Introduction
------------

Many have posed the question of true happiness.  In this blog post we propose to
solve it.

First Attempts
--------------

The earliest attempts at attaining true happiness of course aimed at pleasure. 
Soon, though, the downside of pleasure was revealed.

will yield this as the body of the html:

<h1 class="title">
    True Happiness
</h1>
<div id="TOC">
    <ul>
        <li>
            <a href="#introduction">Introduction</a>
        </li>
        <li>
            <a href="#first-attempts">First Attempts</a>
        </li>
    </ul>
</div>
<div id="introduction">
    <h2>
        <a href="#TOC">Introduction</a>
    </h2>
    <p>
        Many have posed the question of true happiness. In this blog post we propose to solve it.
    </p>
</div>
<div id="first-attempts">
    <h2>
        <a href="#TOC">First Attempts</a>
    </h2>
    <p>
        The earliest attempts at attaining true happiness of course aimed at pleasure. Soon, though, the downside of pleasure was revealed.
    </p>
</div>

You need to run pip list in bash not in python.

pip list
DEPRECATION: Python 2.6 is no longer supported by the Python core team, please upgrade your Python. A future version of pip will drop support for Python 2.6
argparse (1.4.0)
Beaker (1.3.1)
cas (0.15)
cups (1.0)
cupshelpers (1.0)
decorator (3.0.1)
distribute (0.6.10)
---and other modules

INSERT INTO component_psar (tbl_id, row_nr, col_1, col_2, col_3, col_4, col_5, col_6, unit, add_info, fsar_lock)
VALUES('2', '1', '1', '1', '1', '1', '1', '1', '1', '1', 'N')
ON DUPLICATE KEY UPDATE col_1 = VALUES(col_1), col_2 = VALUES(col_2), col_3 = VALUES(col_3), col_4 = VALUES(col_4), col_5 = VALUES(col_5), col_6 = VALUES(col_6), unit = VALUES(unit), add_info = VALUES(add_info), fsar_lock = VALUES(fsar_lock)

Would work with tbl_id and row_nr having UNIQUE key.

This is the method DocJonas linked to with an example.

Here is an example with only CSS and Content Editable:

jsFiddle Example

CSS

span 
{
    border: solid 1px black;
}
div 
{
    max-width: 200px;   
}

HTML

<div>
    <span contenteditable="true">sdfsd</span>
</div>

Important note regarding contenteditable

Making an HTML element contenteditable lets users paste copied HTML elements inside of this element. This may not be ideal for your use case, so keep that in mind when choosing to use it.

Fix:

I chose the "ISAPI & CGI Restrictions" after clicking the server name (not the site name) in IIS Manager, and right clicked the "ASP.NET v4.0.30319" lines and chose "Allow".

After turning on ASP.NET from "Programs and Features > Turn Windows features on or off", you must install ASP.NET from the Windows command prompt. The MIME types don't ever show up, but after doing this command, I noticed these extensions showed up under the IIS web site "Handler Mappings" section of IIS Manager.

C:\>cd C:\Windows\Microsoft.NET\Framework64\v4.0.30319

C:\Windows\Microsoft.NET\Framework64\v4.0.30319>dir aspnet_reg*
 Volume in drive C is Windows
 Volume Serial Number is 8EE6-5DD0

 Directory of C:\Windows\Microsoft.NET\Framework64\v4.0.30319

03/18/2010  08:23 PM            19,296 aspnet_regbrowsers.exe
03/18/2010  08:23 PM            36,696 aspnet_regiis.exe
03/18/2010  08:23 PM           102,232 aspnet_regsql.exe
               3 File(s)        158,224 bytes
               0 Dir(s)  34,836,508,672 bytes free

C:\Windows\Microsoft.NET\Framework64\v4.0.30319>aspnet_regiis.exe -i
Start installing ASP.NET (4.0.30319).
.....
Finished installing ASP.NET (4.0.30319).

C:\Windows\Microsoft.NET\Framework64\v4.0.30319>

However, I still got this error. But if you do what I mentioned for the "Fix", this will go away.

HTTP Error 404.2 - Not Found
The page you are requesting cannot be served because of the ISAPI and CGI Restriction list settings on the Web server.

Basic difference between getAttribute() and getParameter() is the return type.

java.lang.Object getAttribute(java.lang.String name)
java.lang.String getParameter(java.lang.String name)

Talking about functional PHP, I have this more generic answer:

    array_map(function($arr){
        $ret = $arr;
        $ret['value'] = $ret['url'];
        unset($ret['url']);
        return $ret;
    }, $tag);
}

use this to clear the previous keyboard buffer before scanning the string it will solve your problem scanner.nextLine();//this is to clear the keyboard buffer

Modulus works to get bottom bits (only), although I think value & 0x1ffff expresses "take the bottom 17 bits" more directly than value % 131072, and so is easier to understand as doing that.

The top 17 bits of a 32-bit unsigned value would be value & 0xffff8000 (if you want them still in their positions at the top), or value >> 15 if you want the top 17 bits of the value in the bottom 17 bits of the result.

In HTML5, using an a element without an href attribute is valid. It is considered to be a "placeholder hyperlink."

Example:

<a>previous</a>

Look for "placeholder hyperlink" on the w3c anchor tag reference page: https://www.w3.org/TR/2016/REC-html51-20161101/textlevel-semantics.html#the-a-element.

And it is also mentioned on the wiki here: https://www.w3.org/wiki/Elements/a

A placeholder link is for cases where you want to use an anchor element, but not have it navigate anywhere. This comes in handy for marking up the current page in a navigation menu or breadcrumb trail. (The old approach would have been to either use a span tag or an anchor tag with a class named "active" or "current" to style it and JavaScript to cancel navigation.)

A placeholder link is also useful in cases where you want to dynamically set the destination of the link via JavaScript at runtime. You simply set the value of the href attribute, and the anchor tag becomes clickable.

See also:

• https://stackoverflow.com/a/10510353/19112
• http://www.html5in24hours.com/2012/06/8-ways-to-get-started-with-html5-today/
• http://webdesign.about.com/od/html5tutorials/qt/html5-placeholder-links.htm

counter[row[11]]+=1

You don't show what data is, but apparently when you loop through its rows, row[11] is turning out to be a list. Lists are mutable objects which means they cannot be used as dictionary keys. Trying to use row[11] as a key causes the defaultdict to complain that it is a mutable, i.e. unhashable, object.

The easiest fix is to change row[11] from a list to a tuple. Either by doing

counter[tuple(row[11])] += 1

or by fixing it in the caller before data is passed to medications_minimum3. A tuple simply an immutable list, so it behaves exactly like a list does except you cannot change it once it is created.

Assuming you're in the Object Explorer Details (F7) showing the list of Stored Procedures, click the Filters button and enter the name (or partial name).

On windows running where python should work.

ANSI compliant, without cursor

PRINT ('1.a. Delete stored procedures ' + CONVERT( VARCHAR(19), GETDATE(), 121));
GO
DECLARE @procedure NVARCHAR(max)
DECLARE @n CHAR(1)
SET @n = CHAR(10)
SELECT @procedure = isnull( @procedure + @n, '' ) +
'DROP PROCEDURE [' + schema_name(schema_id) + '].[' + name + ']'
FROM sys.procedures

EXEC sp_executesql @procedure
PRINT ('1.b. Stored procedures deleted ' + CONVERT( VARCHAR(19), GETDATE(), 121));
GO

SELECT needefield, CONCAT(firstname, ' ',lastname) as firstlast 
FROM users 
WHERE CONCAT(firstname, ' ', lastname) = "Bob Michael Jones"

You cannot return value after resolving promise. Instead call another function when promise is resolved:

function justTesting() {
    promise.then(function(output) {
        // instead of return call another function
        afterResolve(output + 1);
    });
}

function afterResolve(result) {
    // do something with result
}

var test = justTesting();

For fpdf to work properly, there cannot be any output at all beside what fpdf generates. For example, this will work:

<?php
$pdf = new FPDF();
$pdf->AddPage();
$pdf->SetFont('Arial','B',16);
$pdf->Cell(40,10,'Hello World!');
$pdf->Output();
?>

While this will not (note the leading space before the opening <? tag)

 <?php
$pdf = new FPDF();
$pdf->AddPage();
$pdf->SetFont('Arial','B',16);
$pdf->Cell(40,10,'Hello World!');
$pdf->Output();
?>

Also, this will not work either (the echo will break it):

<?php
echo "About to create pdf";
$pdf = new FPDF();
$pdf->AddPage();
$pdf->SetFont('Arial','B',16);
$pdf->Cell(40,10,'Hello World!');
$pdf->Output();
?>

I'm not sure about the drupal side of things, but I know that absolutely zero non-fpdf output is a requirement for fpdf to work.

add ob_start (); at the top and at the end add ob_end_flush();

<?php
    ob_start();
    require('fpdf.php');
    $pdf = new FPDF();
    $pdf->AddPage();
    $pdf->SetFont('Arial','B',16);
    $pdf->Cell(40,10,'Hello World!');
    $pdf->Output();
    ob_end_flush(); 
?>

give me an error as below:
FPDF error: Some data has already been output, can't send PDF

to over come this error: go to fpdf.php in that,goto line number 996

function Output($name='', $dest='')

after that make changes like this:

function Output($name='', $dest='') {   
    ob_clean();     //Output PDF to so

Hi do you have a session header on the top of your page. or any includes If you have then try to add this codes on top pf your page it should works fine.

<?

while (ob_get_level())
ob_end_clean();
header("Content-Encoding: None", true);

?>

cheers :-)

In my case i had set:

ini_set('display_errors', 'on');
error_reporting(E_ALL | E_STRICT);

When i made the request to generate the report, some warnings were displayed in the browser (like the usage of deprecated functions).
Turning off the display_errors option, the report was generated successfully.

You can programatically change it by setting the system property:

public class App {

    public static void main(String[] args) {

        System.setProperty(org.slf4j.impl.SimpleLogger.DEFAULT_LOG_LEVEL_KEY, "TRACE");

        final org.slf4j.Logger log = LoggerFactory.getLogger(App.class);

        log.trace("trace");
        log.debug("debug");
        log.info("info");
        log.warn("warning");
        log.error("error");

    }
}

The log levels are ERROR > WARN > INFO > DEBUG > TRACE.

Please note that once the logger is created the log level can't be changed. If you need to dynamically change the logging level you might want to use log4j with SLF4J.

Who ever also stumbles over this post.

I belive is the correct way:

  <div *ngFor="let appointment of (_nextFourAppointments | async).availabilities;"> 
    <div>{{ appointment }}</div>
  </div>

If you've installed with the dmg, you can also go to the Mac "System Preferences" menu, click on "MySql" and then on the configuration tab to see the location of all MySql directories.

Reference: https://dev.mysql.com/doc/refman/8.0/en/osx-installation-prefpane.html

Perhaps it is indirect to gdb (because it's an IDE), but my recommendations would be KDevelop. Being quite spoiled with Visual Studio's debugger (professionally at work for many years), I've so far felt the most comfortable debugging in KDevelop (as hobby at home, because I could not afford Visual Studio for personal use - until Express Edition came out). It does "look something similar to" Visual Studio compared to other IDE's I've experimented with (including Eclipse CDT) when it comes to debugging step-through, step-in, etc (placing break points is a bit awkward because I don't like to use mouse too much when coding, but it's not difficult).

I'm assuming you have configured authentication separately.

import boto3
s3 = boto3.resource('s3')

my_bucket = s3.Bucket('bucket_name')

for file in my_bucket.objects.all():
    print(file.key)

if someone is still facing this issue, for me it started to occur after I changed my mysql/data with mysql/backup earlier to solve another issue.

I tried a lot of methods, and finally found the solution was very simple! Just click on this icon(Reset session) after opening PhPMyAdmin(it was loading in my case) just below the logo of PhPMyAdmin. It fixed the issue in one-click!

For me, the error code was #1142

PhpMyAdmin Reset Session

The listed return type of the method is Task<string>. You're trying to return a string. They are not the same, nor is there an implicit conversion from string to Task<string>, hence the error.

You're likely confusing this with an async method in which the return value is automatically wrapped in a Task by the compiler. Currently that method is not an async method. You almost certainly meant to do this:

private async Task<string> methodAsync() 
{
    await Task.Delay(10000);
    return "Hello";
}

There are two key changes. First, the method is marked as async, which means the return type is wrapped in a Task, making the method compile. Next, we don't want to do a blocking wait. As a general rule, when using the await model always avoid blocking waits when you can. Task.Delay is a task that will be completed after the specified number of milliseconds. By await-ing that task we are effectively performing a non-blocking wait for that time (in actuality the remainder of the method is a continuation of that task).

If you prefer a 4.0 way of doing it, without using await , you can do this:

private Task<string> methodAsync() 
{
    return Task.Delay(10000)
        .ContinueWith(t => "Hello");
}

The first version will compile down to something that is more or less like this, but it will have some extra boilerplate code in their for supporting error handling and other functionality of await we aren't leveraging here.

If your Thread.Sleep(10000) is really meant to just be a placeholder for some long running method, as opposed to just a way of waiting for a while, then you'll need to ensure that the work is done in another thread, instead of the current context. The easiest way of doing that is through Task.Run:

private Task<string> methodAsync() 
{
    return Task.Run(()=>
        {
            SomeLongRunningMethod();
            return "Hello";
        });
}

Or more likely:

private Task<string> methodAsync() 
{
    return Task.Run(()=>
        {
            return SomeLongRunningMethodThatReturnsAString();
        });
}

The way I do, by using Delphi:

TheString to "escape":

TheString=" bla bla bla 'em some more apo:S 'em and so on ";

Solution:

StringReplace(TheString, #39,'\'+#39, [rfReplaceAll, rfIgnoreCase]);

Result:

TheString=" bla bla bla \'em some more apo:S \'em and so on ";

This function will replace all Char(39) with "\'" allowing you to insert or update text fields in MySQL without any problem.

Similar functions are found in all programming languages!

This function will clone remote repo into local repo dir, after merging all commits will be saved, git log will be show the original commits and proper paths:

function git-add-repo
{
    repo="$1"
    dir="$(echo "$2" | sed 's/\/$//')"
    path="$(pwd)"

    tmp="$(mktemp -d)"
    remote="$(echo "$tmp" | sed 's/\///g'| sed 's/\./_/g')"

    git clone "$repo" "$tmp"
    cd "$tmp"

    git filter-branch --index-filter '
        git ls-files -s |
        sed "s,\t,&'"$dir"'/," |
        GIT_INDEX_FILE="$GIT_INDEX_FILE.new" git update-index --index-info &&
        mv "$GIT_INDEX_FILE.new" "$GIT_INDEX_FILE"
    ' HEAD

    cd "$path"
    git remote add -f "$remote" "file://$tmp/.git"
    git pull "$remote/master"
    git merge --allow-unrelated-histories -m "Merge repo $repo into master" --edit "$remote/master"
    git remote remove "$remote"
    rm -rf "$tmp"
}

How to use:

cd current/package
git-add-repo https://github.com/example/example dir/to/save

If make a little changes you can even move files/dirs of merged repo into different paths, for example:

repo="https://github.com/example/example"
path="$(pwd)"

tmp="$(mktemp -d)"
remote="$(echo "$tmp" | sed 's/\///g' | sed 's/\./_/g')"

git clone "$repo" "$tmp"
cd "$tmp"

GIT_ADD_STORED=""

function git-mv-store
{
    from="$(echo "$1" | sed 's/\./\\./')"
    to="$(echo "$2" | sed 's/\./\\./')"

    GIT_ADD_STORED+='s,\t'"$from"',\t'"$to"',;'
}

# NOTICE! This paths used for example! Use yours instead!
git-mv-store 'public/index.php' 'public/admin.php'
git-mv-store 'public/data' 'public/x/_data'
git-mv-store 'public/.htaccess' '.htaccess'
git-mv-store 'core/config' 'config/config'
git-mv-store 'core/defines.php' 'defines/defines.php'
git-mv-store 'README.md' 'doc/README.md'
git-mv-store '.gitignore' 'unneeded/.gitignore'

git filter-branch --index-filter '
    git ls-files -s |
    sed "'"$GIT_ADD_STORED"'" |
    GIT_INDEX_FILE="$GIT_INDEX_FILE.new" git update-index --index-info &&
    mv "$GIT_INDEX_FILE.new" "$GIT_INDEX_FILE"
' HEAD

GIT_ADD_STORED=""

cd "$path"
git remote add -f "$remote" "file://$tmp/.git"
git pull "$remote/master"
git merge --allow-unrelated-histories -m "Merge repo $repo into master" --edit "$remote/master"
git remote remove "$remote"
rm -rf "$tmp"

Notices
Paths replaces via sed, so make sure it moved in proper paths after merging.
The --allow-unrelated-histories parameter only exists since git >= 2.9.

I think you're looking for this:

elements = [10, 11, 12, 13, 14, 15]
indices = (1,1,2,1,5)

result_list = [elements[i] for i in indices]    

Use python Sets when you need to compare hm... sets of data. Strings can be represented as sets of characters quite fast. Here I test if string is allowed phone number. First string is allowed, second not. Works fast and simple.

In [17]: timeit.Timer("allowed = set('0123456789+-() ');p = set('+7(898) 64-901-63 ');p.issubset(allowed)").timeit()

Out[17]: 0.8106249139964348

In [18]: timeit.Timer("allowed = set('0123456789+-() ');p = set('+7(950) 64-901-63 ???');p.issubset(allowed)").timeit()

Out[18]: 0.9240323599951807

Never use regexps if you can avoid them.

YAML supports inline comments, but does not support block comments.

From Wikipedia:

Comments begin with the number sign ( # ), can start anywhere on a line, and continue until the end of the line

A comparison with JSON, also from Wikipedia:

The syntax differences are subtle and seldom arise in practice: JSON allows extended charactersets like UTF-32, YAML requires a space after separators like comma, equals, and colon while JSON does not, and some non-standard implementations of JSON extend the grammar to include Javascript's /* ... */ comments. Handling such edge cases may require light pre-processing of the JSON before parsing as in-line YAML.

# If you want to write
# a block-commented Haiku
# you'll need three pound signs

The solution is given below,

From the Docker shell,

root@123abc:/root#  <-- get the container ID

From the host

cp thefile.txt /var/lib/docker/devicemapper/mnt/123abc<bunch-o-hex>/rootfs/root

The file shall be directly copied to the location where the container sits on the filesystem.

All answers are great. Here is an example use case for multiple add address: The ability to add as many email you want on demand with a web form:

See it in action with jsfiddle here (except the php processor)

### Send unlimited email with a web form
# Form for continuously adding e-mails:
<button type="button" onclick="emailNext();">Click to Add Another Email.</button>
<div id="addEmail"></div>
<button type="submit">Send All Emails</button>
# Script function:
<script>
function emailNext() {
    var nextEmail, inside_where;
    nextEmail = document.createElement('input');
    nextEmail.type = 'text';
    nextEmail.name = 'emails[]';
    nextEmail.className = 'class_for_styling';
    nextEmail.style.display = 'block';
    nextEmail.placeholder  = 'Enter E-mail Here';
    inside_where = document.getElementById('addEmail');
    inside_where.appendChild(nextEmail);
    return false;
}
</script>
# PHP Data Processor:
<?php
// ...
// Add the rest of your $mailer here...
if ($_POST[emails]){
    foreach ($_POST[emails] AS $postEmail){
        if ($postEmail){$mailer->AddAddress($postEmail);}
    }
} 
?>

So what it does basically is to generate a new input text box on every click with the name "emails[]".

The [] added at the end makes it an array when posted.

Then we go through each element of the array with "foreach" on PHP side adding the:

    $mailer->AddAddress($postEmail);

I made a function to get a vector of queries and do a transaction, maybe someone will find out it useful:

function transaction ($con, $Q){
        mysqli_query($con, "START TRANSACTION");

        for ($i = 0; $i < count ($Q); $i++){
            if (!mysqli_query ($con, $Q[$i])){
                echo 'Error! Info: <' . mysqli_error ($con) . '> Query: <' . $Q[$i] . '>';
                break;
            }   
        }

        if ($i == count ($Q)){
            mysqli_query($con, "COMMIT");
            return 1;
        }
        else {
            mysqli_query($con, "ROLLBACK");
            return 0;
        }
    }

In your notebook (simple approach). Add new cell with following code

%%html
<style type='text/css'>
.CodeMirror{
    font-size: 12px;
}

div.output_area pre {
    font-size: 12px;
}
</style>

From grep --help, but also see man grep:

Exit status is 0 if any line was selected, 1 otherwise; if any error occurs and -q was not given, the exit status is 2.

if grep --quiet MYSQL_ROLE=master /etc/aws/hosts.conf; then
  echo exists
else
  echo not found
fi

You may want to use a more specific regex, such as ^MYSQL_ROLE=master$, to avoid that string in comments, names that merely start with "master", etc.

This works because the if takes a command and runs it, and uses the return value of that command to decide how to proceed, with zero meaning true and non-zero meaning false—the same as how other return codes are interpreted by the shell, and the opposite of a language like C.

Sydius outlined the types fairly well:

• Normal pointers are just that - they point to some thing in memory somewhere. Who owns it? Only the comments will let you know. Who frees it? Hopefully the owner at some point.
• Smart pointers are a blanket term that cover many types; I'll assume you meant scoped pointer which uses the RAII pattern. It is a stack-allocated object that wraps a pointer; when it goes out of scope, it calls delete on the pointer it wraps. It "owns" the contained pointer in that it is in charge of deleteing it at some point. They allow you to get a raw reference to the pointer they wrap for passing to other methods, as well as releasing the pointer, allowing someone else to own it. Copying them does not make sense.
• Shared pointers is a stack-allocated object that wraps a pointer so that you don't have to know who owns it. When the last shared pointer for an object in memory is destructed, the wrapped pointer will also be deleted.

How about when you should use them? You will either make heavy use of scoped pointers or shared pointers. How many threads are running in your application? If the answer is "potentially a lot", shared pointers can turn out to be a performance bottleneck if used everywhere. The reason being that creating/copying/destructing a shared pointer needs to be an atomic operation, and this can hinder performance if you have many threads running. However, it won't always be the case - only testing will tell you for sure.

There is an argument (that I like) against shared pointers - by using them, you are allowing programmers to ignore who owns a pointer. This can lead to tricky situations with circular references (Java will detect these, but shared pointers cannot) or general programmer laziness in a large code base.

There are two reasons to use scoped pointers. The first is for simple exception safety and cleanup operations - if you want to guarantee that an object is cleaned up no matter what in the face of exceptions, and you don't want to stack allocate that object, put it in a scoped pointer. If the operation is a success, you can feel free to transfer it over to a shared pointer, but in the meantime save the overhead with a scoped pointer.

The other case is when you want clear object ownership. Some teams prefer this, some do not. For instance, a data structure may return pointers to internal objects. Under a scoped pointer, it would return a raw pointer or reference that should be treated as a weak reference - it is an error to access that pointer after the data structure that owns it is destructed, and it is an error to delete it. Under a shared pointer, the owning object can't destruct the internal data it returned if someone still holds a handle on it - this could leave resources open for much longer than necessary, or much worse depending on the code.

The problem is that you aren't correctly escaping the input string, try:

echo "\"member\":\"time\"" | grep -e "member\""

Alternatively, you can use unescaped double quotes within single quotes:

echo '"member":"time"' | grep -e 'member"'

It's a matter of preference which you find clearer, although the second approach prevents you from nesting your command within another set of single quotes (e.g. ssh 'cmd').

I am taking an example of date given below and print two different format of dates according to your requirements.

String date="01/10/2014 05:54:00 PM";

SimpleDateFormat simpleDateFormat=new SimpleDateFormat("dd/MM/yyyy hh:mm:ss aa",Locale.getDefault());

try {
            Log.i("",""+new SimpleDateFormat("ddMMyyyyHHmmss",Locale.getDefault()).format(simpleDateFormat.parse(date)));

            Log.i("",""+new SimpleDateFormat("dd/MM/yyyy HH:mm:ss",Locale.getDefault()).format(simpleDateFormat.parse(date)));

        } catch (ParseException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

If you still have any query, Please respond. Thanks.

I had similar problem, when I was using public Wifi, which didn't have password. Switching the internet connection to a secure connection did solve the problem.

I understand it’s an old question – however I would like to add an example where cost is same but one query is better than the other.

As you observed in the question, % shown in execution plan is not the only yardstick for determining best query. In the following example, I have two queries doing the same task. Execution Plan shows both are equally good (50% each). Now I executed the queries with SET STATISTICS IO ON which shows clear differences.

In the following example, the query 1 uses seek whereas Query 2 uses scan on the table LWManifestOrderLineItems. When we actually checks the execution time however it is find that Query 2 works better.

Also read When is a Seek not a Seek? by Paul White

QUERY

---Preparation---------------
-----------------------------
DBCC FREEPROCCACHE
GO
DBCC DROPCLEANBUFFERS
GO

SET STATISTICS IO ON  --IO
SET STATISTICS TIME ON

--------Queries---------------
------------------------------

SELECT LW.Manifest,LW.OrderID,COUNT(DISTINCT LineItemID)
FROM LWManifestOrderLineItems LW
INNER JOIN ManifestContainers MC
    ON MC.Manifest = LW.Manifest
GROUP BY LW.Manifest,LW.OrderID
ORDER BY COUNT(DISTINCT LineItemID) DESC  

SELECT LW.Manifest,LW.OrderID,COUNT( LineItemID) LineCount
FROM LWManifestOrderLineItems LW
WHERE LW.Manifest IN (SELECT Manifest FROM ManifestContainers)
GROUP BY LW.Manifest,LW.OrderID
ORDER BY COUNT( LineItemID) DESC  

Statistics IO

Execution Plan

Since the java.sql.Date has a constructor that takes 'long time' and java.util.Date has a method that returns 'long time', I just pass the returned 'long time' to the java.sql.Date to create the date.

java.util.Date date = new java.util.Date();
java.sql.Date sqlDate = new Date(date.getTime());

You can also name your foreign key constraint by using:

CONSTRAINT your_name_here FOREIGN KEY (question_exam_id) REFERENCES EXAMS (exam_id)

I convert String to Float in this way:

let numberFormatter = NSNumberFormatter()
let number = numberFormatter.numberFromString("15.5")
let numberFloatValue = number.floatValue

println("number is \(numberFloatValue)") // prints "number is 15.5"

We can add Unique key index by using fluent api. Below code worked for me

protected override void OnModelCreating(DbModelBuilder modelBuilder)
    {

        modelBuilder.Entity<User>().Property(p => p.Email).HasColumnAnnotation("Index", new IndexAnnotation(new IndexAttribute("IX_EmailIndex") { IsUnique = true }));

    }

if you want to use it in all of your classes you can use:

public var yourVariable = "something"

if you want to use just in one class you can use :

var yourVariable = "something"

If you want more than one style this is the correct full answer. This is div with class and style:

<div className="class-example" style={{width: '300px', height: '150px'}}></div>

Try this one: https://github.com/tantau-horia/jquery-SuperCookie

Quick Usage:

create - create cookie

check - check existance

verify - verify cookie value if JSON

check_index - verify if index exists in JSON

read_values - read cookie value as string

read_JSON - read cookie value as JSON object

read_value - read value of index stored in JSON object

replace_value - replace value from a specified index stored in JSON object

remove_value - remove value and index stored in JSON object

Just use:

$.super_cookie().create("name_of_the_cookie",name_field_1:"value1",name_field_2:"value2"});
$.super_cookie().read_json("name_of_the_cookie");

using System;
using System.Data;
using System.Data.SqlClient;

namespace InsertingData
{
    class sqlinsertdata
    {
        static void Main(string[] args)
        {
            try
            { 
            SqlConnection conn = new SqlConnection("Data source=USER-PC; Database=Emp123;User Id=sa;Password=sa123");
            conn.Open();
                SqlCommand cmd = new SqlCommand("insert into <Table Name>values(1,'nagendra',10000);",conn);
                cmd.ExecuteNonQuery();
                Console.WriteLine("Inserting Data Successfully");
                conn.Close();
        }
            catch(Exception e)
            {
                Console.WriteLine("Exception Occre while creating table:" + e.Message + "\t"  + e.GetType());
            }
            Console.ReadKey();

    }
    }
}

list.insert with any index >= len(of_the_list) places the value at the end of list. It behaves like append

Python 3.7.4
>>>lst=[10,20,30]
>>>lst.insert(len(lst), 101)
>>>lst
[10, 20, 30, 101]
>>>lst.insert(len(lst)+50, 202)
>>>lst
[10, 20, 30, 101, 202]

Time complexity, append O(1), insert O(n)

Edit: I missed the multi-dimensional aspect of this question, so I'm leaving this here in case it helps people compare one-dimensional arrays

It's an old question, but I was having issues with the speed of using .sort() or sortBy(), so I used this instead:

function arraysContainSameStrings(array1: string[], array2: string[]): boolean {
  return (
    array1.length === array2.length &&
    array1.every((str) => array2.includes(str)) &&
    array2.every((str) => array1.includes(str))
  )
}

It was intended to fail fast, and for my purposes works fine.

JSONObject baseReq
LinkedHashMap insert = (LinkedHashMap) baseReq.get("insert");
LinkedHashMap delete = (LinkedHashMap) baseReq.get("delete");

That error usually occurs when you try to subtract an interval from DateTime.MinValue or you want to add something to DateTime.MaxValue (or you try to instantiate a date outside this min-max interval). Are you sure you're not assigning MinValue somewhere?

Also you may need:

• SystemParameters.VirtualScreenWidth
• SystemParameters.VirtualScreenHeight

to get the combined size of all monitors and not one in particular.

To create an instance of a class from another project in the solution, you can get the assembly indicated by the name of any class (for example BaseEntity) and create a new instance:

  var newClass = System.Reflection.Assembly.GetAssembly(typeof(BaseEntity)).CreateInstance("MyProject.Entities.User");

I believe the most simple method to inject Javascript in a WebBrowser Control HTML Document from c# is to invoke the "execScript" method with the code to be injected as argument.

In this example the javascript code is injected and executed at global scope:

var jsCode="alert('hello world from injected code');";
WebBrowser.Document.InvokeScript("execScript", new Object[] { jsCode, "JavaScript" });

If you want to delay execution, inject functions and call them after:

var jsCode="function greet(msg){alert(msg);};";
WebBrowser.Document.InvokeScript("execScript", new Object[] { jsCode, "JavaScript" });
...............
WebBrowser.Document.InvokeScript("greet",new object[] {"hello world"});

This is valid for Windows Forms and WPF WebBrowser controls.

This solution is not cross browser because "execScript" is defined only in IE and Chrome. But the question is about Microsoft WebBrowser controls and IE is the only one supported.

For a valid cross browser method to inject javascript code, create a Function object with the new Keyword. This example creates an anonymous function with injected code and executes it (javascript implements closures and the function has access to global space without local variable pollution).

var jsCode="alert('hello world');";
(new Function(code))();

Of course, you can delay execution:

var jsCode="alert('hello world');";
var inserted=new Function(code);
.................
inserted();

Hope it helps

Put this code somewhere in your C++ project:

#ifdef _DEBUG
TCHAR version[50];
sprintf(&version[0], "Version = %d", _MSC_VER);
MessageBox(NULL, (LPCTSTR)szMsg, "Visual Studio", MB_OK | MB_ICONINFORMATION);
#endif

Note that _MSC_VER symbol is Microsoft specific. Here you can find a list of Visual Studio versions with the value for _MSC_VER for each version.

There are a couple of things to check:

• In FireBug, see if there are any loading errors that would indicate that your script is badly formatted and the functions do not get registered.
• You can also try typing "proceedToSecond" into the FireBug console to see if the function gets defined
• One thing you may try is removing the space around the @type attribute to the script tag: it should be <script type="text/javascript"> instead of <script type = "text/javascript">

$users = $dbh->query($sql);
foreach ($users as $row) {
    print $row["name"] . "-" . $row["sex"] ."<br/>";
}
foreach ($users as $row) {
    print $row["name"] . "-" . $row["sex"] ."<br/>";
}

Here $users is a PDOStatement object over which you can iterate. The first iteration outputs all results, the second does nothing since you can only iterate over the result once. That's because the data is being streamed from the database and iterating over the result with foreach is essentially shorthand for:

while ($row = $users->fetch()) ...

Once you've completed that loop, you need to reset the cursor on the database side before you can loop over it again.

$users = $dbh->query($sql);
foreach ($users as $row) {
    print $row["name"] . "-" . $row["sex"] ."<br/>";
}
echo "<br/>";
$result = $users->fetch(PDO::FETCH_ASSOC);
foreach($result as $key => $value) {
    echo $key . "-" . $value . "<br/>";
}

Here all results are being output by the first loop. The call to fetch will return false, since you have already exhausted the result set (see above), so you get an error trying to loop over false.

In the last example you are simply fetching the first result row and are looping over it.

In regards to Gordon M's answer above, the 1st and 2nd parameter in mysqli_real_escape_string () call should be swapped for the newer php versions, according to: http://php.net/manual/en/mysqli.real-escape-string.php

Just do this way:-

$('ul li').on('click', function(e) {
    alert($(this).index()); 
});

OR

$('ul li').click(function() {
    alert($(this).index());
});

First convert your image to Base64 (encode to Base64). You can do it online or with a PHP script.

After converting you will get the result as

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

Now it's simple to use.

You have to just put it in the src of the image and define there as it is in base64 encoded form.

Example:

<img src="data:image/jpeg;base64,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">

One tricky thing not covered by the other answers here is that the .gitignore file won't work if you have inline comments, like this:

foo/bar # The bar file contains sensitive data so we don't want to make this public

So, if you do have comments like that, change them like this:

# The bar file contains sensitive data so we don't want to make this public
foo/bar

Check out the MSDN article Asynchronous Programming with Async and Await if you can afford to play with new stuff. It was added to .NET 4.5.

Example code snippet from the link (which is itself from this MSDN sample code project):

// Three things to note in the signature: 
//  - The method has an async modifier.  
//  - The return type is Task or Task<T>. (See "Return Types" section.)
//    Here, it is Task<int> because the return statement returns an integer. 
//  - The method name ends in "Async."
async Task<int> AccessTheWebAsync()
{ 
    // You need to add a reference to System.Net.Http to declare client.
    HttpClient client = new HttpClient();

    // GetStringAsync returns a Task<string>. That means that when you await the 
    // task you'll get a string (urlContents).
    Task<string> getStringTask = client.GetStringAsync("http://msdn.microsoft.com");

    // You can do work here that doesn't rely on the string from GetStringAsync.
    DoIndependentWork();

    // The await operator suspends AccessTheWebAsync. 
    //  - AccessTheWebAsync can't continue until getStringTask is complete. 
    //  - Meanwhile, control returns to the caller of AccessTheWebAsync. 
    //  - Control resumes here when getStringTask is complete.  
    //  - The await operator then retrieves the string result from getStringTask. 
    string urlContents = await getStringTask;

    // The return statement specifies an integer result. 
    // Any methods that are awaiting AccessTheWebAsync retrieve the length value. 
    return urlContents.Length;
}

Quoting:

If AccessTheWebAsync doesn't have any work that it can do between calling GetStringAsync and awaiting its completion, you can simplify your code by calling and awaiting in the following single statement.

string urlContents = await client.GetStringAsync();

More details are in the link.