Change alert(buttons[i].text);
to alert(i);
Solution for Swift 2:
let singleTapGesture = UITapGestureRecognizer(target: self, action: #selector(handleSingleTap))
singleTapGesture.numberOfTapsRequired = 1 // Optional for single tap
view.addGestureRecognizer(singleTapGesture)
let doubleTapGesture = UITapGestureRecognizer(target: self, action: #selector(handleDoubleTap))
doubleTapGesture.numberOfTapsRequired = 2
view.addGestureRecognizer(doubleTapGesture)
singleTapGesture.requireGestureRecognizerToFail(doubleTapGesture)
In the command line type service apache2 status
then hit enter. The result should say:
Apache2 is running (pid xxxx)
You will have to define the functions inside your header file.
You cannot separate definition of template functions in to the source file and declarations in to header file.
When a template is used in a way that triggers its intstantation, a compiler needs to see that particular templates definition. This is the reason templates are often defined in the header file in which they are declared.
Reference:
C++03 standard, § 14.7.2.4:
The definition of a non-exported function template, a non-exported member function template, or a non-exported member function or static data member of a class template shall be present in every translation unit in which it is explicitly instantiated.
EDIT:
To clarify the discussion on the comments:
Technically, there are three ways to get around this linking problem:
.cpp
file. #include
the .cpp
file defining the template at the .cpp
file using the template. Each of them have their pros and cons,
Moving the defintions to header files may increase the code size(modern day compilers can avoid this) but will increase the compilation time for sure.
Using the explicit instantiation approach is moving back on to traditional macro like approach.Another disadvantage is that it is necessary to know which template types are needed by the program. For a simple program this is easy but for complicated program this becomes difficult to determine in advance.
While including cpp files is confusing at the same time shares the problems of both above approaches.
I find first method the easiest to follow and implement and hence advocte using it.
So you can change it programmatically easily by using homeAsUpIndicator() function that added in android API level 18 and upper.
ActionBar().setHomeAsUpIndicator(R.drawable.ic_yourindicator);
If you use support library
getSupportActionBar().setHomeAsUpIndicator(R.drawable.ic_yourindicator);
I think the easiest way is to do it through the command line like David mentions. The only trick is that the .dll isn't simply located at C:\Windows\Assembly. You have to navigate to C:\Windows\Assembly\GAC\[ASSEMBLY_NAME]\[VERSION_NUMBER]_[PUBLIC KEY]. You can then do a copy using:
copy [ASSEMBLY_NAME].dll c:\ (or whatever location you want)
Hope that helps.
I would think that one reason could be that the color is applied to things other than font. For example:
div {
border: 1px solid;
color: red;
}
Yields both a red font color and a red border.
Alternatively, it could just be that the W3C's CSS standards are completely backwards and nonsensical as evidenced elsewhere.
just mention that - Jan, 2020 Xcode 11.3/iOS13
Swift 5
From the CoreGraphics source code
public struct CGFloat {
/// The native type used to store the CGFloat, which is Float on
/// 32-bit architectures and Double on 64-bit architectures.
public typealias NativeType = Double
add "distinct" after "select".
select distinct a.FirstName, a.LastName, v.District , v.LastName
from AddTbl a
inner join ValTbl v where a.LastName = v.LastName order by Firstname
Is sharding mostly important in very large scale applications or does it apply to smaller scale ones?
Sharding is a concern if and only if your needs scale past what can be served by a single database server. It's a swell tool if you have shardable data and you have incredibly high scalability and performance requirements. I would guess that in my entire 12 years I've been a software professional, I've encountered one situation that could have benefited from sharding. It's an advanced technique with very limited applicability.
Besides, the future is probably going to be something fun and exciting like a massive object "cloud" that erases all potential performance limitations, right? :)
There is a bunch on here:
http://www.webservicex.net/WS/wscatlist.aspx
Just google for "Free WebService" or "Open WebService" and you'll find tons of open SOAP endpoints.
Remember, you can get a WSDL from any ASMX endpoint by adding ?WSDL to the url.
I have done this one by Passing ArrayList in form of String.
Add compile 'com.google.code.gson:gson:2.2.4'
in dependencies block build.gradle.
Click on Sync Project with Gradle Files
Cars.java:
public class Cars {
public String id, name;
}
When you want to pass ArrayList:
List<Cars> cars= new ArrayList<Cars>();
cars.add(getCarModel("1", "A"));
cars.add(getCarModel("2", "B"));
cars.add(getCarModel("3", "C"));
cars.add(getCarModel("4", "D"));
Gson gson = new Gson();
String jsonCars = gson.toJson(cars);
Intent intent = new Intent(FirstActivity.this, SecondActivity.class);
intent.putExtra("list_as_string", jsonCars);
startActivity(intent);
Get CarsModel by Function:
private Cars getCarModel(String id, String name){
Cars cars = new Cars();
cars.id = id;
cars.name = name;
return cars;
}
You have to import java.lang.reflect.Type
;
on onCreate() to retrieve ArrayList:
String carListAsString = getIntent().getStringExtra("list_as_string");
Gson gson = new Gson();
Type type = new TypeToken<List<Cars>>(){}.getType();
List<Cars> carsList = gson.fromJson(carListAsString, type);
for (Cars cars : carsList){
Log.i("Car Data", cars.id+"-"+cars.name);
}
Hope this will save time, I saved it.
Done
For latest react native versions to bundle the project
Android
react-native bundle --platform android --dev false --entry-file index.js --bundle-output android/app/src/main/assets/index.android.bundle --assets-dest android/app/src/main/res/
iOS
react-native bundle --entry-file index.js --platform ios --dev false --bundle-output ios/main.jsbundle --assets-dest ios
How is this possible? Without an index on the er101_upd_date_iso column how can a clustered index scan be used?
An index is a B-Tree where each leaf node is pointing to a 'bunch of rows'(called a 'Page' in SQL internal terminology), That is when the index is a non-clustered index.
Clustered index is a special case, in which the leaf nodes has the 'bunch of rows' (rather than pointing to them). that is why...
1) There can be only one clustered index on the table.
this also means the whole table is stored as the clustered index, that is why you started seeing index scan rather than a table scan.
2) An operation that utilizes clustered index is generally faster than a non-clustered index
Read more at http://msdn.microsoft.com/en-us/library/ms177443.aspx
For the problem you have, you should really consider adding this column to a index, as you said adding a new index (or a column to an existing index) increases INSERT/UPDATE costs. But it might be possible to remove some underutilized index (or a column from an existing index) to replace with 'er101_upd_date_iso'.
If index changes are not possible, i recommend adding a statistics on the column, it can fasten things up when the columns have some correlation with indexed columns
http://msdn.microsoft.com/en-us/library/ms188038.aspx
BTW, You will get much more help if you can post the table schema of ER101_ACCT_ORDER_DTL. and the existing indices too..., probably the query could be re-written to use some of them.
Use the following extensions and just pass the action like:
_frmx.PerformSafely(() => _frmx.Show());
_frmx.PerformSafely(() => _frmx.Location = new Point(x,y));
Extension class:
public static class CrossThreadExtensions
{
public static void PerformSafely(this Control target, Action action)
{
if (target.InvokeRequired)
{
target.Invoke(action);
}
else
{
action();
}
}
public static void PerformSafely<T1>(this Control target, Action<T1> action,T1 parameter)
{
if (target.InvokeRequired)
{
target.Invoke(action, parameter);
}
else
{
action(parameter);
}
}
public static void PerformSafely<T1,T2>(this Control target, Action<T1,T2> action, T1 p1,T2 p2)
{
if (target.InvokeRequired)
{
target.Invoke(action, p1,p2);
}
else
{
action(p1,p2);
}
}
}
You can also remove rows and columns by feeding a vector of logical boolean values to the matrix. This handles the situation where you have multiple non-contiguous rows or non-contiguous columns that need to be deleted.
# TRUE = Keep a row/column
# FALSE = Delete a row/column
#
# FALSE for rows 4, 5, and 6
# Row: 1 2 3 4 5 6 7 8 9 10
rows_to_keep <- c(TRUE, TRUE, TRUE, FALSE, FALSE, FALSE, TRUE, TRUE, TRUE, TRUE)
# FALSE for columns 7, 8, and 9
# Column: 1 2 3 4 5 6 7 8 9 10
cols_to_keep <- c(TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, FALSE, FALSE, FALSE, TRUE)
To remove just the rows:
t1 <- t1[rows_to_keep,]
To remove just the columns:
t1 <- t1[,cols_to_keep]
To remove both the rows and columns:
t1 <- t1[rows_to_keep, cols_to_keep]
This coding technique is useful if you don't know in advance what rows or columns you need to remove. The rows_to_keep
and cols_to_keep
vectors can be calculated as appropriate by your code.
Add this code in your app delegate -did_finish_launching_with_options function
UITabBar.appearance().tintColor = UIColor( red: CGFloat(255/255.0), green: CGFloat(99/255.0), blue: CGFloat(95/255.0), alpha: CGFloat(1.0) )
put the RGB of the required color
I know we have to use regex, but during an interview, I was asked to do WITHOUT USING REGEX.
@slightlytyler helped me in coming with the below approach.
const testStr = "I LOVE STACKOVERFLOW LOL";_x000D_
_x000D_
const removeSpaces = str => {_x000D_
const chars = str.split('');_x000D_
const nextChars = chars.reduce(_x000D_
(acc, c) => {_x000D_
if (c === ' ') {_x000D_
const lastChar = acc[acc.length - 1];_x000D_
if (lastChar === ' ') {_x000D_
return acc;_x000D_
}_x000D_
}_x000D_
return [...acc, c];_x000D_
},_x000D_
[],_x000D_
);_x000D_
const nextStr = nextChars.join('');_x000D_
return nextStr_x000D_
};_x000D_
_x000D_
console.log(removeSpaces(testStr));
_x000D_
filter_by
is used for simple queries on the column names using regular kwargs, like
db.users.filter_by(name='Joe')
The same can be accomplished with filter
, not using kwargs, but instead using the '==' equality operator, which has been overloaded on the db.users.name object:
db.users.filter(db.users.name=='Joe')
You can also write more powerful queries using filter
, such as expressions like:
db.users.filter(or_(db.users.name=='Ryan', db.users.country=='England'))
As per your question, it can be done by various ways: - For example you can use:
If you want to insert a new line in text area , you can try this:-
Line Feed and
Carriage return
<textarea>Hello Stackoverflow</textarea>
You can also
<pre>---</pre>
Preformatted text.
<pre>
This is Line1
This is Line2
This is Line3
</pre>
Or,you can use
<p>----</p>
Paragraph
<p>This is Line1</p>
<p>This is Line2</p>
<p>This is Line3</p>
Note: if you want to use
\n
you need to install a server like Xampp or Apache to support server side language
If you want to dubbel check the amount of cores you have on your machine to the number your java program is giving you.
In Linux terminal: lscpu
In Windows terminal (cmd): echo %NUMBER_OF_PROCESSORS%
In Mac terminal: sysctl -n hw.ncpu
No, it probably is actually working. It's just not readily visible. Instead of just using the header
call, try doing that, then including 404.php
, and then calling die
.
You can test the fact that the HTTP/1.0 404 Not Found
works by creating a PHP file named, say, test.php
with this content:
<?php
header("HTTP/1.0 404 Not Found");
echo "PHP continues.\n";
die();
echo "Not after a die, however.\n";
Then viewing the result with curl -D /dev/stdout
reveals:
HTTP/1.0 404 Not Found
Date: Mon, 04 Apr 2011 03:39:06 GMT
Server: Apache
X-Powered-By: PHP/5.3.2
Content-Length: 14
Connection: close
Content-Type: text/html
PHP continues.
In vanilla javaScript - in ES6
(() => {_x000D_
document.querySelector('.parent').addEventListener('click', event => {_x000D_
alert(event.target.classList.contains('child') ? 'Child element.' : 'Parent element.');_x000D_
});_x000D_
})();
_x000D_
.parent {_x000D_
display: inline-block;_x000D_
padding: 45px;_x000D_
background: lightgreen;_x000D_
}_x000D_
.child {_x000D_
width: 120px;_x000D_
height:60px;_x000D_
background: teal;_x000D_
}
_x000D_
<div class="parent">_x000D_
<div class="child"></div>_x000D_
</div>
_x000D_
Also, you need to do something like this in config.xml if you are developing a customized module
<frontend>
<layout>
<updates>
<hpcustomer>
<file>hpcustomer.xml</file>
</hpcustomer>
</updates>
</layout>
</frontend>
I have changed the code of serge_gubenko and it works better
for (int i = 0; i < dataGrid.Items.Count; i++)
{
string txt = searchTxt.Text;
dataGrid.ScrollIntoView(dataGrid.Items[i]);
DataGridRow row = (DataGridRow)dataGrid.ItemContainerGenerator.ContainerFromIndex(i);
TextBlock cellContent = dataGrid.Columns[1].GetCellContent(row) as TextBlock;
if (cellContent != null && cellContent.Text.ToLower().Equals(txt.ToLower()))
{
object item = dataGrid.Items[i];
dataGrid.SelectedItem = item;
dataGrid.ScrollIntoView(item);
row.MoveFocus(new TraversalRequest(FocusNavigationDirection.Next));
break;
}
}
This worked for me in Swift 5
Just added sample video to the project from Sample Videos
Added action Buttons for playing videos from Website and Local with the following swift code example
import UIKit
import AVKit
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
//TODO : Make Sure Add and copy "SampleVideo.mp4" file in project before play
}
@IBAction func playWebVideo(_ sender: Any) {
guard let url = URL(string: "https://clips.vorwaerts-gmbh.de/big_buck_bunny.mp4") else {
return
}
// Create an AVPlayer, passing it the HTTP Live Streaming URL.
let player = AVPlayer(url: url)
let controller = AVPlayerViewController()
controller.player = player
present(controller, animated: true) {
player.play()
}
}
@IBAction func playLocalVideo(_ sender: Any) {
guard let path = Bundle.main.path(forResource: "SampleVideo", ofType: "mp4") else {
return
}
let videoURL = NSURL(fileURLWithPath: path)
// Create an AVPlayer, passing it the local video url path
let player = AVPlayer(url: videoURL as URL)
let controller = AVPlayerViewController()
controller.player = player
present(controller, animated: true) {
player.play()
}
}
}
Late simple example:
from os import path, getcwd, chdir
def print_my_path():
print('cwd: {}'.format(getcwd()))
print('__file__:{}'.format(__file__))
print('abspath: {}'.format(path.abspath(__file__)))
print_my_path()
chdir('..')
print_my_path()
Under Python-2.*, the second call incorrectly determines the path.abspath(__file__)
based on the current directory:
cwd: C:\codes\py
__file__:cwd_mayhem.py
abspath: C:\codes\py\cwd_mayhem.py
cwd: C:\codes
__file__:cwd_mayhem.py
abspath: C:\codes\cwd_mayhem.py
As noted by @techtonik, in Python 3.4+, this will work fine since __file__
returns an absolute path.
The ally.js accessibility library provides an unofficial, test-based list here:
https://allyjs.io/data-tables/focusable.html
(NB: Their page doesn't say how often tests were performed.)
Open the svg using Inkscape.
Inkscape is a svg editor it is a bit like Illustrator but as it is built specifically for svg it handles it way better. It is a free software and it's available @ https://inkscape.org/en/
done
all rect/circle have been converted to path
You can use all
> all(1:6 %in% 0:36)
[1] TRUE
> all(1:60 %in% 0:36)
[1] FALSE
On a similar note, if you want to check whether any of the elements is TRUE you can use any
> any(1:6 %in% 0:36)
[1] TRUE
> any(1:60 %in% 0:36)
[1] TRUE
> any(50:60 %in% 0:36)
[1] FALSE
just add
android:gravity="bottom" android:paddingBottom="10dp"
change paddingBottom according to your size of edittext
If you're using Bash or zsh, use this:
type -a lshw
This will show whether the target is a builtin, a function, an alias or an external executable. If the latter, it will show each place it appears in your PATH
.
bash$ type -a lshw
lshw is /usr/bin/lshw
bash$ type -a ls
ls is aliased to `ls --color=auto'
ls is /bin/ls
bash$ zsh
zsh% type -a which
which is a shell builtin
which is /usr/bin/which
In Bash, for functions type -a
will also display the function definition. You can use declare -f functionname
to do the same thing (you have to use that for zsh, since type -a
doesn't).
The other answers posted here will work, but the clearest and most efficient function to use is numpy.any()
:
>>> all_zeros = not np.any(a)
or
>>> all_zeros = not a.any()
numpy.all(a==0)
because it uses less RAM. (It does not require the temporary array created by the a==0
term.)numpy.count_nonzero(a)
because it can return immediately when the first nonzero element has been found.np.any()
no longer uses "short-circuit" logic, so you won't see a speed benefit for small arrays.Here is my answer:
var options = ["1", "2", "3", "4", "5"];
for(m = 0 ; m <= options.length-1; m++){
var opt= document.createElement("OPTION");
opt.text = options[m];
opt.value = (m+1);
if(options[m] == "5"){
opt.selected = true;}
document.getElementById("selectNum").options.add(opt);}
I solved it this way:
<servlet-mapping>
<servlet-name>Spring MVC Dispatcher Servlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.jpg</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.png</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.gif</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.js</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.css</url-pattern>
</servlet-mapping>
This works on Tomcat and ofcourse Jboss. However in the end I decided to use the solution Spring provides (as mentioned by rozky) which is far more portable.
My utils function for get view location, it will return a Point
object with x value
and y value
public static Point getLocationOnScreen(View view){
int[] location = new int[2];
view.getLocationOnScreen(location);
return new Point(location[0], location[1]);
}
Using
Point viewALocation = getLocationOnScreen(viewA);
Try this css
.clearfix:before, .clearfix:after, .container:before, .container:after, .container-fluid:before, .container-fluid:after, .row:before, .row:after, .form-horizontal .form-group:before, .form-horizontal .form-group:after, .btn-toolbar:before, .btn-toolbar:after, .btn-group-vertical > .btn-group:before, .btn-group-vertical > .btn-group:after, .nav:before, .nav:after, .navbar:before, .navbar:after, .navbar-header:before, .navbar-header:after, .navbar-collapse:before, .navbar-collapse:after, .pager:before, .pager:after, .panel-body:before, .panel-body:after, .modal-footer:before, .modal-footer:after {
content: " ";
display: table-cell;
}
ul.nav {
float: none;
margin-bottom: 0;
margin-left: auto;
margin-right: auto;
margin-top: 0;
width: 240px;
}
For spring :
File inputFile = new ClassPathResource("\\chrome\\chromedriver.exe").getFile();
System.setProperty("webdriver.chrome.driver",inputFile.getCanonicalPath());
You can do by maintaining the state as below:
$('#user_button').on('click',function(){
if($(this).attr('data-click-state') == 1) {
$(this).attr('data-click-state', 0);
$(this).css('background-color', 'red')
}
else {
$(this).attr('data-click-state', 1);
$(this).css('background-color', 'orange')
}
});
Use this code:
<div class="hidden"><li><a href="somehwere">Link text</a></li></div>
The trick is to use invariant culture, to parse dot in all cultures.
double.Parse("3.5", System.Globalization.NumberStyles.AllowDecimalPoint, System.Globalization.NumberFormatInfo.InvariantInfo);
For this particular purpose, $("span").show()
should be good enough.
Update of @param's answer.
ICS emulator supports camera.
I found Simple Android Photo Capture, which supports webcam in android emulator.
I would use something along these lines...
netstat -rn | grep "default" | awk '{print $2}'
This command count number of non-blank lines. cat fileName | grep -v ^$ | wc -l
grep -v ^$ regular expression function is ignore blank lines.
I have done this in a project a long time ago. The code given below write a whole rows bold with specific column names and all of these columns are written in bold format.
private void WriteColumnHeaders(DataColumnCollection columnCollection, int row, int column)
{
// row represent particular row you want to bold its content.
for (i = 0; i < columnCollection.Count; i++)
{
DataColumn col = columnCollection[i];
xlWorkSheet.Cells[row, column + i + 1] = col.Caption;
// Some Font Styles
xlWorkSheet.Cells[row, column + i + 1].Style.Font.Bold = true;
xlWorkSheet.Cells[row, column + i + 1].Interior.Color = Color.FromArgb(192, 192, 192);
//xlWorkSheet.Columns[i + 1].ColumnWidth = xlWorkSheet.Columns[i+1].ColumnWidth + 10;
}
}
You must pass value of row 0 so that first row of your excel sheets have column headers with bold font size. Just change DataColumnCollection
to your columns name and change col.Caption
to specific column name.
Alternate
You may do this to cell of excel sheet you want bold.
xlWorkSheet.Cells[row, column].Style.Font.Bold = true;
A cleaner alternative of putting your config file into a subfolder of src/main/resources would be to enhance your classpath locations. This is extremely easy to do with Maven.
For instance, place your property file in a new folder src/main/config, and add the following to your pom:
<build>
<resources>
<resource>
<directory>src/main/config</directory>
</resource>
</resources>
</build>
From now, every files files under src/main/config is considered as part of your classpath (note that you can exclude some of them from the final jar if needed: just add in the build section:
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<configuration>
<excludes>
<exclude>my-config.properties</exclude>
</excludes>
</configuration>
</plugin>
</plugins>
so that my-config.properties can be found in your classpath when you run your app from your IDE, but will remain external from your jar in your final distribution).
As another answer already said, call select myfunc(:y) from dual;
, but you might find declaring and setting a variable in sqlplus a little tricky:
sql> var y number
sql> begin
2 select 7 into :y from dual;
3 end;
4 /
PL/SQL procedure successfully completed.
sql> print :y
Y
----------
7
sql> select myfunc(:y) from dual;
To make the child element positioned absolutely from its parent element you need to set relative position on the parent element AND absolute position on the child element.
Then on the child element 'top' is relative to the height of the parent. So you also need to 'translate' upward the child 50% of its own height.
.base{_x000D_
background-color: green;_x000D_
width: 200px;_x000D_
height: 200px;_x000D_
overflow: auto;_x000D_
position: relative;_x000D_
}_x000D_
_x000D_
.vert-align {_x000D_
position: absolute;_x000D_
top: 50%;_x000D_
transform: translate(0, -50%);_x000D_
}
_x000D_
<div class="base">_x000D_
<div class="vert-align">_x000D_
Content Here_x000D_
</div>_x000D_
</div>
_x000D_
There is another a solution using flex box.
.base{_x000D_
background-color:green;_x000D_
width: 200px;_x000D_
height: 200px;_x000D_
overflow: auto;_x000D_
display: flex;_x000D_
align-items: center;_x000D_
}
_x000D_
<div class="base">_x000D_
<div class="vert-align">_x000D_
Content Here_x000D_
</div>_x000D_
</div>
_x000D_
You will find advantages/disavantages for both.
Andres Ilich has it right. Just in case someone misses his comment...
A.) If you only have one line of text:
div_x000D_
{_x000D_
height: 200px;_x000D_
line-height: 200px; /* <-- this is what you must define */_x000D_
}
_x000D_
<div>vertically centered text</div>
_x000D_
B.) If you have multiple lines of text:
div_x000D_
{_x000D_
height: 200px;_x000D_
line-height: 200px;_x000D_
}_x000D_
_x000D_
span_x000D_
{_x000D_
display: inline-block;_x000D_
vertical-align: middle;_x000D_
line-height: 18px; /* <-- adjust this */_x000D_
}
_x000D_
<div><span>vertically centered text vertically centered text vertically centered text vertically centered text vertically centered text vertically centered text vertically centered text vertically centered text vertically centered text vertically centered text</span></div>
_x000D_
Try this for SQL Server:
WITH cte AS (
SELECT home, MAX(year) AS year FROM Table1 GROUP BY home
)
SELECT * FROM Table1 a INNER JOIN cte ON a.home = cte.home AND a.year = cte.year
The benefit of doing server side validation over client side validation is that client side validation can be bypassed/manipulated:
In short - always, always validate server-side and then consider client-side validation as an added "extra" to enhance the end user experience.
Authentication is the process of confirming a user or computer’s identity. The process normally consists of four steps: The user makes a claim of identity, usually by providing a username. For example, I might make this claim by telling a database that my username is “mchapple”. The system challenges the user to prove his or her identity. The most common challenge is a request for a password. The user responds to the challenge by providing the requested proof. In this example, I would provide the database with my password The system verifies that the user has provided acceptable proof by, for example, checking the password against a local password database or using a centralized authentication server
To add WebAPI in my MVC 5 project.
Open NuGet Package manager console and run
PM> Install-Package Microsoft.AspNet.WebApi
Add references to System.Web.Routing
, System.Web.Net
and System.Net.Http
dlls if not there already
Right click controllers folder > add new item > web > Add Web API controller
Web.config will be modified accordingly by VS
Add Application_Start
method if not there already
protected void Application_Start()
{
//this should be line #1 in this method
GlobalConfiguration.Configure(WebApiConfig.Register);
}
Add the following class (I added in global.asax.cs file)
public static class WebApiConfig
{
public static void Register(HttpConfiguration config)
{
// Web API routes
config.MapHttpAttributeRoutes();
config.Routes.MapHttpRoute(
name: "DefaultApi",
routeTemplate: "api/{controller}/{id}",
defaults: new { id = RouteParameter.Optional }
);
}
}
Modify web api method accordingly
namespace <Your.NameSpace.Here>
{
public class VSController : ApiController
{
// GET api/<controller> : url to use => api/vs
public string Get()
{
return "Hi from web api controller";
}
// GET api/<controller>/5 : url to use => api/vs/5
public string Get(int id)
{
return (id + 1).ToString();
}
}
}
Rebuild and test
Build a simple html page
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<script src="../<path_to_jquery>/jquery-1.9.1.min.js"></script>
<script type="text/javascript">
var uri = '/api/vs';
$(document).ready(function () {
$.getJSON(uri)
.done(function (data) {
alert('got: ' + data);
});
$.ajax({
url: '/api/vs/5',
async: true,
success: function (data) {
alert('seccess1');
var res = parseInt(data);
alert('got res=' + res);
}
});
});
</script>
</head>
<body>
....
</body>
</html>
The "star sign" is only meaningful if there is something in front of it. If there isn't the tool (grep in this case) may just treat it as an error. For example:
'*xyz' is meaningless
'a*xyz' means zero or more occurrences of 'a' followed by xyz
Check out some of the answers to this question - I think it might apply to yours:
how to run click function after default behaviour of a element
I think you're running into an inconsistency in the browser implementation of the onclick
function. Some choose to toggle the checkbox before the event is fired and some after.
This is what I got from oracle documentation, but it is for oracle 10g release 2:
When you define a NUMBER variable, you can specify its precision (p) and scale (s) so that it is sufficiently, but not unnecessarily, large. Precision is the number of significant digits. Scale can be positive or negative. Positive scale identifies the number of digits to the right of the decimal point; negative scale identifies the number of digits to the left of the decimal point that can be rounded up or down.
The NUMBER data type is supported by Oracle Database standard libraries and operates the same way as it does in SQL. It is used for dimensions and surrogates when a text or INTEGER data type is not appropriate. It is typically assigned to variables that are not used for calculations (like forecasts and aggregations), and it is used for variables that must match the rounding behavior of the database or require a high degree of precision. When deciding whether to assign the NUMBER data type to a variable, keep the following facts in mind in order to maximize performance:
I know this topic is old, but I'll give yet another approach I've found and previously described here. Basically I'm using ASP.MVC with WIF (but this is not really important for the context of this topic - answer is adequate no matter which frameworks are used. The clue stays unchanged - dealing with issues related to authentication failures while performing ajax requests).
The approach shown below can be applied to all ajax requests out of the box (if they do not redefine beforeSend event obviously).
$.ajaxSetup({
beforeSend: checkPulse,
error: function (XMLHttpRequest, textStatus, errorThrown) {
document.open();
document.write(XMLHttpRequest.responseText);
document.close();
}
});
Before any ajax request is performed CheckPulse
method is invoked (the controller method which can be anything simplest):
[Authorize]
public virtual void CheckPulse() {}
If user is not authenticated (token has expired) such method cannot be accessed (protected by Authorize
attribute). Because the framework handles authentication, while token expires, it puts http status 302 to the response. If you don't want your browser to handle 302 response transparently, catch it in Global.asax and change response status - for example to 200 OK. Additionally, add header, which instructs you to process such response in special way (later at the client side):
protected void Application_EndRequest()
{
if (Context.Response.StatusCode == 302
&& (new HttpContextWrapper(Context)).Request.IsAjaxRequest())
{
Context.Response.StatusCode = 200;
Context.Response.AddHeader("REQUIRES_AUTH", "1");
}
}
Finally at the client side check for such custom header. If present - full redirection to logon page should be done (in my case window.location
is replaced by url from request which is handled automatically by my framework).
function checkPulse(XMLHttpRequest) {
var location = window.location.href;
$.ajax({
url: "/Controller/CheckPulse",
type: 'GET',
async: false,
beforeSend: null,
success:
function (result, textStatus, xhr) {
if (xhr.getResponseHeader('REQUIRES_AUTH') === '1') {
XMLHttpRequest.abort(); // terminate further ajax execution
window.location = location;
}
}
});
}
This is my query to find all those that are NOT number :
Select myVarcharField
From myTable
where not REGEXP_LIKE(myVarcharField, '^(-)?\d+(\.\d+)?$', '')
and not REGEXP_LIKE(myVarcharField, '^(-)?\d+(\,\d+)?$', '');
In my field I've . and , decimal numbers sadly so had to take that into account, else you only need one of the restriction.
Just so you know, the semicolon(;) is not supposed to be there in the button when you call the function.
So it should just look like this: onclick="CapacityChart()"
then it all should work :)
XMLBlueprint 7.5 can do the following: - generate sample xml from dtd - generate sample xml from relax ng schema - generate sample xml from xml schema
Don't forget to add android:scrollbars="vertical"
along with android:fadeScrollbars="false"
or it won't show at all in some cases.
lets say you have a model called Book and on it a field called 'cover_pic', in that case, you can do the following to compress the image:
from PIL import Image
b = Book.objects.get(title='Into the wild')
image = Image.open(b.cover_pic.path)
image.save(b.image.path,quality=20,optimize=True)
hope it helps to anyone stumbling upon it.
should be handled as a whitespace.
should be handled as two whitespaces
' ' can be handled as a non interesting whitespace
' ' + ' ' can be handled as a single ' '
First, unzip the APK and extract the file /META-INF/ANDROID_.RSA (this file may also be CERT.RSA, but there should only be one .RSA file).
Then issue this command:
keytool -printcert -file ANDROID_.RSA
You will get certificate fingerprints like this:
MD5: B3:4F:BE:07:AA:78:24:DC:CA:92:36:FF:AE:8C:17:DB
SHA1: 16:59:E7:E3:0C:AA:7A:0D:F2:0D:05:20:12:A8:85:0B:32:C5:4F:68
Signature algorithm name: SHA1withRSA
Then use the keytool again to print out all the aliases of your signing keystore:
keytool -list -keystore my-signing-key.keystore
You will get a list of aliases and their certificate fingerprint:
android_key, Jan 23, 2010, PrivateKeyEntry,
Certificate fingerprint (MD5): B3:4F:BE:07:AA:78:24:DC:CA:92:36:FF:AE:8C:17:DB
Voila! we can now determined the apk has been signed with this keystore, and with the alias 'android_key'.
Keytool is part of Java, so make sure your PATH has Java installation dir in it.
This is way late to answer but it will work for latest python users:
from bs4 import BeautifulSoup
import requests
html_page = requests.get('http://www.example.com').text
soup = BeautifulSoup(html_page, "lxml")
for link in soup.findAll('a'):
print(link.get('href'))
Don't forget to install "requests" and "BeautifulSoup" package and also "lxml". Use .text along with get otherwise it will throw an exception.
"lxml" is used to remove that warning of which parser to be used. You can also use "html.parser" whichever fits your case.
How to handle authentication in a RESTful Client-Server architecture is a matter of debate.
Commonly, it can be achieved, in the SOA over HTTP world via:
You'll have to adapt, or even better mix those techniques, to match your software architecture at best.
Each authentication scheme has its own PROs and CONs, depending on the purpose of your security policy and software architecture.
HTTP basic auth over HTTPS
This first solution, based on the standard HTTPS protocol, is used by most web services.
GET /spec.html HTTP/1.1
Host: www.example.org
Authorization: Basic QWxhZGRpbjpvcGVuIHNlc2FtZQ==
It's easy to implement, available by default on all browsers, but has some known drawbacks, like the awful authentication window displayed on the Browser, which will persist (there is no LogOut-like feature here), some server-side additional CPU consumption, and the fact that the user-name and password are transmitted (over HTTPS) into the Server (it should be more secure to let the password stay only on the client side, during keyboard entry, and be stored as secure hash on the Server).
We may use Digest Authentication, but it requires also HTTPS, since it is vulnerable to MiM or Replay attacks, and is specific to HTTP.
Session via Cookies
To be honest, a session managed on the Server is not truly Stateless.
One possibility could be to maintain all data within the cookie content. And, by design, the cookie is handled on the Server side (Client, in fact, does even not try to interpret this cookie data: it just hands it back to the server on each successive request). But this cookie data is application state data, so the client should manage it, not the server, in a pure Stateless world.
GET /spec.html HTTP/1.1
Host: www.example.org
Cookie: theme=light; sessionToken=abc123
The cookie technique itself is HTTP-linked, so it's not truly RESTful, which should be protocol-independent, IMHO. It is vulnerable to MiM or Replay attacks.
Granted via Token (OAuth2)
An alternative is to put a token within the HTTP headers so that the request is authenticated. This is what OAuth 2.0 does, for instance. See the RFC 6749:
GET /resource/1 HTTP/1.1
Host: example.com
Authorization: Bearer mF_9.B5f-4.1JqM
In short, this is very similar to a cookie and suffers to the same issues: not stateless, relying on HTTP transmission details, and subject to a lot of security weaknesses - including MiM and Replay - so is to be used only over HTTPS. Typically, a JWT is used as a token.
Query Authentication
Query Authentication consists in signing each RESTful request via some additional parameters on the URI. See this reference article.
It was defined as such in this article:
All REST queries must be authenticated by signing the query parameters sorted in lower-case, alphabetical order using the private credential as the signing token. Signing should occur before URL encoding the query string.
This technique is perhaps the more compatible with a Stateless architecture, and can also be implemented with a light session management (using in-memory sessions instead of DB persistence).
For instance, here is a generic URI sample from the link above:
GET /object?apiKey=Qwerty2010
should be transmitted as such:
GET /object?timestamp=1261496500&apiKey=Qwerty2010&signature=abcdef0123456789
The string being signed is /object?apikey=Qwerty2010×tamp=1261496500
and the signature is the SHA256 hash of that string using the private component of the API key.
Server-side data caching can be always available. For instance, in our framework, we cache the responses at the SQL level, not at the URI level. So adding this extra parameter doesn't break the cache mechanism.
See this article for some details about RESTful authentication in our client-server ORM/SOA/MVC framework, based on JSON and REST. Since we allow communication not only over HTTP/1.1, but also named pipes or GDI messages (locally), we tried to implement a truly RESTful authentication pattern, and not rely on HTTP specificity (like header or cookies).
Later Note: adding a signature in the URI can be seen as bad practice (since for instance it will appear in the http server logs) so it has to be mitigated, e.g. by a proper TTL to avoid replays. But if your http logs are compromised, you will certainly have bigger security problems.
In practice, the upcoming MAC Tokens Authentication for OAuth 2.0 may be a huge improvement in respect to the "Granted by Token" current scheme. But this is still a work in progress and is tied to HTTP transmission.
Conclusion
It's worth concluding that REST is not only HTTP-based, even if, in practice, it's also mostly implemented over HTTP. REST can use other communication layers. So a RESTful authentication is not just a synonym of HTTP authentication, whatever Google answers. It should even not use the HTTP mechanism at all but shall be abstracted from the communication layer. And if you use HTTP communication, thanks to the Let's Encrypt initiative there is no reason not to use proper HTTPS, which is required in addition to any authentication scheme.
Another way to think about Return-Path
vs Reply-To
is to compare it to snail mail.
When you send an envelope in the mail, you specify a return address. If the recipient does not exist or refuses your mail, the postmaster returns the envelope back to the return address. For email, the return address is the Return-Path
.
Inside of the envelope might be a letter and inside of the letter it may direct the recipient to "Send correspondence to example address". For email, the example address is the Reply-To
.
In essence, a Postage Return Address is comparable to SMTP's Return-Path
header and SMTP's Reply-To
header is similar to the replying instructions contained in a letter.
Try this,
this.props.router.push('/foo')
warning works for versions prior to v4
and
this.props.history.push('/foo')
for v4 and above
To get height for the NSAttributedString use this function below. Where width - the width of your UILabel or UITextView
func getHeight(for attributedString: NSAttributedString, font: UIFont, width: CGFloat) -> CGFloat {
let textStorage = NSTextStorage(attributedString: attributedString)
let textContainter = NSTextContainer(size: CGSize(width: width, height: CGFloat.greatestFiniteMagnitude))
let layoutManager = NSLayoutManager()
layoutManager.addTextContainer(textContainter)
textStorage.addLayoutManager(layoutManager)
textStorage.addAttribute(NSAttributedString.Key.font, value: font, range: NSMakeRange(0, textStorage.length))
textContainter.lineFragmentPadding = 0.0
layoutManager.glyphRange(for: textContainter)
return layoutManager.usedRect(for: textContainter).size.height
}
To get height for String use this function, It is almost identical like the previous method:
func getHeight(for string: String, font: UIFont, width: CGFloat) -> CGFloat {
let textStorage = NSTextStorage(string: string)
let textContainter = NSTextContainer(size: CGSize(width: width, height: CGFloat.greatestFiniteMagnitude))
let layoutManager = NSLayoutManager()
layoutManager.addTextContainer(textContainter)
textStorage.addLayoutManager(layoutManager)
textStorage.addAttribute(NSAttributedString.Key.font, value: font, range: NSMakeRange(0, textStorage.length))
textContainter.lineFragmentPadding = 0.0
layoutManager.glyphRange(for: textContainter)
return layoutManager.usedRect(for: textContainter).size.height
}
Use a class method:
def self.colours
['white', 'red', 'black']
end
Then Model.colours
will return that array. Alternatively, create an initializer and wrap the constants in a module to avoid namespace conflicts.
Quick and dirty: just use Redux + react-redux + redux-persist + AsyncStorage for react-native.
It fits almost perfectly the react native world and works like a charm for both android and ios. Also, there is a solid community around it, and plenty of information.
For a working example, see the F8App from Facebook.
What are the different options for data persistence?
With react native, you probably want to use redux and redux-persist. It can use multiple storage engines. AsyncStorage and redux-persist-filesystem-storage are the options for RN.
There are other options like Firebase or Realm, but I never used those on a RN project.
For each, what are the limits of that persistence (i.e., when is the data no longer available)? For example: when closing the application, restarting the phone, etc.
Using redux + redux-persist you can define what is persisted and what is not. When not persisted, data exists while the app is running. When persisted, the data persists between app executions (close, open, restart phone, etc).
AsyncStorage has a default limit of 6MB on Android. It is possible to configure a larger limit (on Java code) or use redux-persist-filesystem-storage as storage engine for Android.
For each, are there differences (other than general setup) between implementing in iOS vs Android?
Using redux + redux-persist + AsyncStorage the setup is exactly the same on android and iOS.
How do the options compare for accessing data offline? (or how is offline access typically handled?)
Using redux, offiline access is almost automatic thanks to its design parts (action creators and reducers).
All data you fetched and stored are available, you can easily store extra data to indicate the state (fetching, success, error) and the time it was fetched. Normally, requesting a fetch does not invalidate older data and your components just update when new data is received.
The same apply in the other direction. You can store data you are sending to server and that are still pending and handle it accordingly.
Are there any other considerations I should keep in mind?
React promotes a reactive way of creating apps and Redux fits very well on it. You should try it before just using an option you would use in your regular Android or iOS app. Also, you will find much more docs and help for those.
Well, some time passed since 2008 and it's time for some fresh answer. Since Django 1.5 you will be able to create custom User class. Actually, at the time I'm writing this, it's already merged into master, so you can try it out.
There's some information about it in docs or if you want to dig deeper into it, in this commit.
All you have to do is add AUTH_USER_MODEL
to settings with path to custom user class, which extends either AbstractBaseUser
(more customizable version) or AbstractUser
(more or less old User class you can extend).
For people that are lazy to click, here's code example (taken from docs):
from django.db import models
from django.contrib.auth.models import (
BaseUserManager, AbstractBaseUser
)
class MyUserManager(BaseUserManager):
def create_user(self, email, date_of_birth, password=None):
"""
Creates and saves a User with the given email, date of
birth and password.
"""
if not email:
raise ValueError('Users must have an email address')
user = self.model(
email=MyUserManager.normalize_email(email),
date_of_birth=date_of_birth,
)
user.set_password(password)
user.save(using=self._db)
return user
def create_superuser(self, username, date_of_birth, password):
"""
Creates and saves a superuser with the given email, date of
birth and password.
"""
u = self.create_user(username,
password=password,
date_of_birth=date_of_birth
)
u.is_admin = True
u.save(using=self._db)
return u
class MyUser(AbstractBaseUser):
email = models.EmailField(
verbose_name='email address',
max_length=255,
unique=True,
)
date_of_birth = models.DateField()
is_active = models.BooleanField(default=True)
is_admin = models.BooleanField(default=False)
objects = MyUserManager()
USERNAME_FIELD = 'email'
REQUIRED_FIELDS = ['date_of_birth']
def get_full_name(self):
# The user is identified by their email address
return self.email
def get_short_name(self):
# The user is identified by their email address
return self.email
def __unicode__(self):
return self.email
def has_perm(self, perm, obj=None):
"Does the user have a specific permission?"
# Simplest possible answer: Yes, always
return True
def has_module_perms(self, app_label):
"Does the user have permissions to view the app `app_label`?"
# Simplest possible answer: Yes, always
return True
@property
def is_staff(self):
"Is the user a member of staff?"
# Simplest possible answer: All admins are staff
return self.is_admin
Another option is to use GKMersenneTwisterRandomSource from GameKit. The docs say:
A deterministic pseudo-random source that generates random numbers based on a mersenne twister algorithm. This is a deterministic random source suitable for creating reliable gameplay mechanics. It is slightly slower than an Arc4 source, but more random, in that it has a longer period until repeating sequences. While deterministic, this is not a cryptographic random source. It is however suitable for obfuscation of gameplay data.
import GameKit
let minValue = 0
let maxValue = 100
var randomDistribution: GKRandomDistribution?
let randomSource = GKMersenneTwisterRandomSource()
randomDistribution = GKRandomDistribution(randomSource: randomSource, lowestValue: minValue, highestValue: maxValue)
let number = randomDistribution?.nextInt() ?? 0
print(number)
Example taken from Apple's sample code: https://github.com/carekit-apple/CareKit/blob/master/CareKitPrototypingTool/OCKPrototyper/CareKitPatient/RandomNumberGeneratorHelper.swift
ART
According to the docs: http://web.archive.org/web/20170909233829/https://source.android.com/devices/tech/dalvik/configure an .odex
file:
contains AOT compiled code for methods in the APK.
Furthermore, they appear to be regular shared libraries, since if you get any app, and check:
file /data/app/com.android.appname-*/oat/arm64/base.odex
it says:
base.odex: ELF shared object, 64-bit LSB arm64, stripped
and aarch64-linux-gnu-objdump -d base.odex
seems to work and give some meaningful disassembly (but also some rubbish sections).
The verbose option is handy, but if you want to see everything that curl does (including the HTTP body that is transmitted, and not just the headers), I suggest using one of the below options:
--trace-ascii -
# stdout--trace-ascii output_file.txt
# file$first = doubleval($_POST['first']);
$second = doubleval($_POST['second']);
if($_POST['group1'] == 'add') {
echo "$first + $second = ".($first + $second);
}
// etc
If adding pypi.python.org as a trusted host does not work, you try adding files.pythonhosted.org. For example
python -m pip install --upgrade --trusted-host files.pythonhosted.org <package-name>
You can use any one these [starting from the fastest]
$("#moo") > $("#foo #moo") > $("div#foo span#moo") > $("#foo span") > $("#foo > #moo")
you could JSONObject#has
, providing the key
as input and check if the method returns true
or false
. You could also
use optString
instead of getString
:
Returns the value mapped by name if it exists, coercing it if necessary. Returns the empty string if no such mapping exists
function amiLoadedInIFrame() {
try {
// Introduce a new propery in window.top
window.top.dummyAttribute = true;
// If window.dummyAttribute is there.. then window and window.top are same intances
return !window.dummyAttribute;
} catch(e) {
// Exception will be raised when the top is in different domain
return true;
}
}
Have you googled about it - insert update delete access vb.net, there are lots of reference about this.
Insert Update Delete Navigation & Searching In Access Database Using VB.NET
what could be the easier way to connect and manipulate the DB?
Use OleDBConnection class to make connection with DB
is it by using MS ACCESS 2003 or MS ACCESS 2007?
you can use any you want to use or your client will use on their machine.
it seems that you want to find some example of opereations fo the database. Here is an example of Access 2010 for your reference:
Example code snippet:
Imports System
Imports System.Data
Imports System.Data.OleDb
Public Class DBUtil
Private connectionString As String
Public Sub New()
Dim con As New OleDb.OleDbConnection
Dim dbProvider As String = "Provider=Microsoft.ace.oledb.12.0;"
Dim dbSource = "Data Source=d:\DB\Database11.accdb"
connectionString = dbProvider & dbSource
End Sub
Public Function GetCategories() As DataSet
Dim query As String = "SELECT * FROM Categories"
Dim cmd As New OleDbCommand(query)
Return FillDataSet(cmd, "Categories")
End Function
Public SubUpdateCategories(ByVal name As String)
Dim query As String = "update Categories set name = 'new2' where name = ?"
Dim cmd As New OleDbCommand(query)
cmd.Parameters.AddWithValue("Name", name)
Return FillDataSet(cmd, "Categories")
End Sub
Public Function GetItems() As DataSet
Dim query As String = "SELECT * FROM Items"
Dim cmd As New OleDbCommand(query)
Return FillDataSet(cmd, "Items")
End Function
Public Function GetItems(ByVal categoryID As Integer) As DataSet
'Create the command.
Dim query As String = "SELECT * FROM Items WHERE Category_ID=?"
Dim cmd As New OleDbCommand(query)
cmd.Parameters.AddWithValue("category_ID", categoryID)
'Fill the dataset.
Return FillDataSet(cmd, "Items")
End Function
Public Sub AddCategory(ByVal name As String)
Dim con As New OleDbConnection(connectionString)
'Create the command.
Dim insertSQL As String = "INSERT INTO Categories "
insertSQL &= "VALUES(?)"
Dim cmd As New OleDbCommand(insertSQL, con)
cmd.Parameters.AddWithValue("Name", name)
Try
con.Open()
cmd.ExecuteNonQuery()
Finally
con.Close()
End Try
End Sub
Public Sub AddItem(ByVal title As String, ByVal description As String, _
ByVal price As Decimal, ByVal categoryID As Integer)
Dim con As New OleDbConnection(connectionString)
'Create the command.
Dim insertSQL As String = "INSERT INTO Items "
insertSQL &= "(Title, Description, Price, Category_ID)"
insertSQL &= "VALUES (?, ?, ?, ?)"
Dim cmd As New OleDb.OleDbCommand(insertSQL, con)
cmd.Parameters.AddWithValue("Title", title)
cmd.Parameters.AddWithValue("Description", description)
cmd.Parameters.AddWithValue("Price", price)
cmd.Parameters.AddWithValue("CategoryID", categoryID)
Try
con.Open()
cmd.ExecuteNonQuery()
Finally
con.Close()
End Try
End Sub
Private Function FillDataSet(ByVal cmd As OleDbCommand, ByVal tableName As String) As DataSet
Dim con As New OleDb.OleDbConnection
Dim dbProvider As String = "Provider=Microsoft.ace.oledb.12.0;"
Dim dbSource = "Data Source=D:\DB\Database11.accdb"
connectionString = dbProvider & dbSource
con.ConnectionString = connectionString
cmd.Connection = con
Dim adapter As New OleDbDataAdapter(cmd)
Dim ds As New DataSet()
Try
con.Open()
adapter.Fill(ds, tableName)
Finally
con.Close()
End Try
Return ds
End Function
End Class
Refer these links:
Insert, Update, Delete & Search Values in MS Access 2003 with VB.NET 2005
INSERT, DELETE, UPDATE AND SELECT Data in MS-Access with VB 2008
How Add new record ,Update record,Delete Records using Vb.net Forms when Access as a back
Try this:
$('#select-meal-type').change(function(){
var arr = $(this).val()
});
Demo
$('#select-meal-type').change(function(){_x000D_
var arr = $(this).val();_x000D_
console.log(arr)_x000D_
})
_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>_x000D_
<select id="select-meal-type" multiple="multiple">_x000D_
<option value="1">Breakfast</option>_x000D_
<option value="2">Lunch</option>_x000D_
<option value="3">Dinner</option>_x000D_
<option value="4">Snacks</option>_x000D_
<option value="5">Dessert</option>_x000D_
</select>
_x000D_
First of all, parent-child scope relation does matter. You have two possibilities to emit some event:
$broadcast
-- dispatches the event downwards to all child scopes,$emit
-- dispatches the event upwards through the scope hierarchy.I don't know anything about your controllers (scopes) relation, but there are several options:
If scope of firstCtrl
is parent of the secondCtrl
scope, your code should
work by replacing $emit
by $broadcast
in firstCtrl
:
function firstCtrl($scope)
{
$scope.$broadcast('someEvent', [1,2,3]);
}
function secondCtrl($scope)
{
$scope.$on('someEvent', function(event, mass) { console.log(mass); });
}
In case there is no parent-child relation between your scopes you
can inject $rootScope
into the controller and broadcast the event
to all child scopes (i.e. also secondCtrl
).
function firstCtrl($rootScope)
{
$rootScope.$broadcast('someEvent', [1,2,3]);
}
Finally, when you need to dispatch the event from child controller
to scopes upwards you can use $scope.$emit
. If scope of firstCtrl
is parent of the secondCtrl
scope:
function firstCtrl($scope)
{
$scope.$on('someEvent', function(event, data) { console.log(data); });
}
function secondCtrl($scope)
{
$scope.$emit('someEvent', [1,2,3]);
}
Here's a great working example project; Tesseract OCR Sample (Visual Studio) with Leptonica Preprocessing Tesseract OCR Sample (Visual Studio) with Leptonica Preprocessing
Tesseract OCR 3.02.02 API can be confusing, so this guides you through including the Tesseract and Leptonica dll into a Visual Studio C++ Project, and provides a sample file which takes an image path to preprocess and OCR. The preprocessing script in Leptonica converts the input image into black and white book-like text.
Setup
To include this in your own projects, you will need to reference the header files and lib and copy the tessdata folders and dlls.
Copy the tesseract-include folder to the root folder of your project. Now Click on your project in Visual Studio Solution Explorer, and go to Project>Properties.
VC++ Directories>Include Directories:
..\tesseract-include\tesseract;..\tesseract-include\leptonica;$(IncludePath) C/C++>Preprocessor>Preprocessor Definitions:
_CRT_SECURE_NO_WARNINGS;%(PreprocessorDefinitions) C/C++>Linker>Input>Additional Dependencies:
..\tesseract-include\libtesseract302.lib;..\tesseract-include\liblept168.lib;%(AdditionalDependencies) Now you can include headers in your project's file:
Now copy the two dll files in tesseract-include and the tessdata folder in Debug to the Output Directory of your project.
When you initialize tesseract, you need to specify the location of the parent folder (!important) of the tessdata folder if it is not already the current directory of your executable file. You can copy my script, which assumes tessdata is installed in the executable's folder.
tesseract::TessBaseAPI *api = new tesseract::TessBaseAPI(); api->Init("D:\tessdataParentFolder\", ... Sample
You can compile the provided sample, which takes one command line argument of the image path to use. The preprocess() function uses Leptonica to create a black and white book-like copy of the image which makes tesseract work with 90% accuracy. The ocr() function shows the functionality of the Tesseract API to return a string output. The toClipboard() can be used to save text to clipboard on Windows. You can copy these into your own projects.
The message you're getting isn't an error; it's just letting you know that you're not using a Network Security Configuration. If you want to add one, take a look at this page on the Android Developers website: https://developer.android.com/training/articles/security-config.html.
The currently added directory is already committed in the repository. So delete the directory in the repository and commit the same directory again.
Adding a quick snippet to have it ready to execute:
Source: myparser.py
import argparse
parser = argparse.ArgumentParser(description="Flip a switch by setting a flag")
parser.add_argument('-w', action='store_true')
args = parser.parse_args()
print args.w
Usage:
python myparser.py -w
>> True
<>
is used to indicate generics in Java.
T
is a type parameter in this example. And no: instantiating is one of the few things that you can't do with T
.
Apart from the tutorial linked above Angelika Langers Generics FAQ is a great resource on the topic.
du
is handy, but find
is useful in case if you want to calculate the size of some files only (for example, using filter by extension). Also note that find
themselves can print the size of each file in bytes. To calculate a total size we can connect dc
command in the following manner:
find . -type f -printf "%s + " | dc -e0 -f- -ep
Here find
generates sequence of commands for dc
like 123 + 456 + 11 +
.
Although, the completed program should be like 0 123 + 456 + 11 + p
(remember postfix notation).
So, to get the completed program we need to put 0
on the stack before executing the sequence from stdin, and print the top number after executing (the p
command at the end).
We achieve it via dc
options:
-e0
is just shortcut for -e '0'
that puts 0
on the stack,-f-
is for read and execute commands from stdin (that generated by find
here),-ep
is for print the result (-e 'p'
).To print the size in MiB like 284.06 MiB
we can use -e '2 k 1024 / 1024 / n [ MiB] p'
in point 3 instead (most spaces are optional).
May be I am really late for reply, Seriously guys this error resolution took hours of time, i tried every possible solution.
While, the solution is really really simple. If you look closely in environment variable PSModulePath there will be commas at end of the value simply remove those and enjoy
There is no such thing as :touch
in the W3C specifications, http://www.w3.org/TR/CSS2/selector.html#pseudo-class-selectors
:active
should work, I would think.
Order on the :active
/:hover
pseudo class is important for it to function correctly.
Here is a quote from that above link
Interactive user agents sometimes change the rendering in response to user actions. CSS provides three pseudo-classes for common cases:
- The :hover pseudo-class applies while the user designates an element (with some pointing device), but does not activate it. For example, a visual user agent could apply this pseudo-class when the cursor (mouse pointer) hovers over a box generated by the element. User agents not supporting interactive media do not have to support this pseudo-class. Some conforming user agents supporting interactive media may not be able to support this pseudo-class (e.g., a pen device).
- The :active pseudo-class applies while an element is being activated by the user. For example, between the times the user presses the mouse button and releases it.
- The :focus pseudo-class applies while an element has the focus (accepts keyboard events or other forms of text input).
Use it for correct result
$dom = new DOMDocument();
$dom->loadHTML('<meta http-equiv="Content-Type" content="text/html; charset=utf-8">' . $profile);
echo $dom->saveHTML();
echo $profile;
This operation
mb_convert_encoding($profile, 'HTML-ENTITIES', 'UTF-8');
It is bad way, because special symbols like < ; , > ; can be in $profile, and they will not convert twice after mb_convert_encoding. It is the hole for XSS and incorrect HTML.
An alternate solution could be to alter the flow of execution of your script by using the GOTO
statement...
DECLARE @RunScript bit;
SET @RunScript = 0;
IF @RunScript != 1
BEGIN
RAISERROR ('Raise Error does not stop processing, so we will call GOTO to skip over the script', 1, 1);
GOTO Skipper -- This will skip over the script and go to Skipper
END
PRINT 'This is where your working script can go';
PRINT 'This is where your working script can go';
PRINT 'This is where your working script can go';
PRINT 'This is where your working script can go';
Skipper: -- Don't do nuttin!
Warning! The above sample was derived from an example I got from Merrill Aldrich. Before you implement the GOTO
statement blindly, I recommend you read his tutorial on Flow control in T-SQL Scripts.
Consider using a Spinner instead of a Number Picker in a Dialog. It's not exactly what was asked for, but it's much easier to implement, more contextual UI design, and should fulfill most use cases. The equivalent code for a Spinner is:
Spinner picker = new Spinner(this);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(getActivity(), android.R.layout.simple_spinner_item, yourStringList);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
picker.setAdapter(adapter);
My solution: https://gist.github.com/pangui/86b5e0610b53ddf28f94 It prevents double click but accepts more clicks after 1 second. Hope it helps.
Here is the code:
jQuery.fn.preventDoubleClick = function() {
$(this).on('click', function(e){
var $el = $(this);
if($el.data('clicked')){
// Previously clicked, stop actions
e.preventDefault();
e.stopPropagation();
}else{
// Mark to ignore next click
$el.data('clicked', true);
// Unmark after 1 second
window.setTimeout(function(){
$el.removeData('clicked');
}, 1000)
}
});
return this;
};
Construct a List<AppMeta>
from the excluded List and use the Except Linq operator.
var ex = excludedAppIds.Select(x => new AppMeta{Id = x}).ToList();
var result = ex.Except(unfilteredApps).ToList();
You can use regular grep like this:
tail -f admin.log | grep -v "Nopaging the limit is\|keyword to remove is"
Drag and drop apk if the emulator is launched from Android Studio. If the emulator is started from command line, drag and drop doesn't work, but @Tarek K. Ajaj instructions (above) work.
Note: Installed app won't automatically appear on the home screen, it is in the apps container - the dotted grid icon. It can be dragged from there to the home screen.
Some years back Javaworld had an article on determining the size of composite and potentially nested Java objects, they basically walk through creating a sizeof() implementation in Java. The approach basically builds on other work where people experimentally identified the size of primitives and typical Java objects and then apply that knowledge to a method that recursively walks an object graph to tally the total size.
It is always going to be somewhat less accurate than a native C implementation simply because of the things going on behind the scenes of a class but it should be a good indicator.
Alternatively a SourceForge project appropriately called sizeof that offers a Java5 library with a sizeof() implementation.
P.S. Do not use the serialization approach, there is no correlation between the size of a serialized object and the amount of memory it consumes when live.
The first check user logged in and then
if (Auth::check()){
//get id of logged in user
{{ Auth::getUser()->id}}
//get the name of logged in user
{{ Auth::getUser()->name }}
}
Using HTML5 Blob Object-URL File API:
/**
* Save a text as file using HTML <a> temporary element and Blob
* @see https://stackoverflow.com/questions/49988202/macos-webview-download-a-html5-blob-file
* @param fileName String
* @param fileContents String JSON String
* @author Loreto Parisi
*/
var saveBlobAsFile = function(fileName,fileContents) {
if(typeof(Blob)!='undefined') { // using Blob
var textFileAsBlob = new Blob([fileContents], { type: 'text/plain' });
var downloadLink = document.createElement("a");
downloadLink.download = fileName;
if (window.webkitURL != null) {
downloadLink.href = window.webkitURL.createObjectURL(textFileAsBlob);
}
else {
downloadLink.href = window.URL.createObjectURL(textFileAsBlob);
downloadLink.onclick = document.body.removeChild(event.target);
downloadLink.style.display = "none";
document.body.appendChild(downloadLink);
}
downloadLink.click();
} else {
var pp = document.createElement('a');
pp.setAttribute('href', 'data:text/plain;charset=utf-8,' + encodeURIComponent(fileContents));
pp.setAttribute('download', fileName);
pp.onclick = document.body.removeChild(event.target);
pp.click();
}
}//saveBlobAsFile
/**_x000D_
* Save a text as file using HTML <a> temporary element and Blob_x000D_
* @see https://stackoverflow.com/questions/49988202/macos-webview-download-a-html5-blob-file_x000D_
* @param fileName String_x000D_
* @param fileContents String JSON String_x000D_
* @author Loreto Parisi_x000D_
*/_x000D_
var saveBlobAsFile = function(fileName, fileContents) {_x000D_
if (typeof(Blob) != 'undefined') { // using Blob_x000D_
var textFileAsBlob = new Blob([fileContents], {_x000D_
type: 'text/plain'_x000D_
});_x000D_
var downloadLink = document.createElement("a");_x000D_
downloadLink.download = fileName;_x000D_
if (window.webkitURL != null) {_x000D_
downloadLink.href = window.webkitURL.createObjectURL(textFileAsBlob);_x000D_
} else {_x000D_
downloadLink.href = window.URL.createObjectURL(textFileAsBlob);_x000D_
downloadLink.onclick = document.body.removeChild(event.target);_x000D_
downloadLink.style.display = "none";_x000D_
document.body.appendChild(downloadLink);_x000D_
}_x000D_
downloadLink.click();_x000D_
} else {_x000D_
var pp = document.createElement('a');_x000D_
pp.setAttribute('href', 'data:text/plain;charset=utf-8,' + encodeURIComponent(fileContents));_x000D_
pp.setAttribute('download', fileName);_x000D_
pp.onclick = document.body.removeChild(event.target);_x000D_
pp.click();_x000D_
}_x000D_
} //saveBlobAsFile_x000D_
_x000D_
var jsonObject = {_x000D_
"name": "John",_x000D_
"age": 31,_x000D_
"city": "New York"_x000D_
};_x000D_
var fileContents = JSON.stringify(jsonObject, null, 2);_x000D_
var fileName = "data.json";_x000D_
_x000D_
saveBlobAsFile(fileName, fileContents)
_x000D_
To add to CrazyGeek's answer, get
or get_or_create
queries work only when there's one instance of the object in the database, filter
is for two or more.
If a query can be for single or multiple instances, it's best to add an ID to the div and use an if statement e.g.
def updateUserCollection(request):
data = json.loads(request.body)
card_id = data['card_id']
action = data['action']
user = request.user
card = Cards.objects.get(card_id=card_id)
if data-action == 'add':
collection = Collection.objects.get_or_create(user=user, card=card)
collection.quantity + 1
collection.save()
elif data-action == 'remove':
collection = Cards.objects.filter(user=user, card=card)
collection.quantity = 0
collection.update()
Note: .save()
becomes .update()
for updating multiple objects. Hope this helps someone, gave me a long day's headache.
You could use built-in function trigger_error()
to trigger user errors/warnings/notices and set_error_handler()
to handle them. Inside your error handler you might want to use error_log()
or file_put_contents()
to store all records on files. To have a single file for every day just use something like sprintf('%s.log', date('Y-m-d'))
as filename. And now you should know where to start... :)
you should use rownum in oracle to do what you seek
where rownum <= 100
see also those answers to help you
You can iterate over this.form.errors property.
call chooseImage method like-
public void chooseImage(ImageView v)
{
Intent intent = new Intent(Intent.ACTION_PICK);
intent.setType("image/*");
startActivityForResult(intent, SELECT_PHOTO);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent imageReturnedIntent) {
// TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, imageReturnedIntent);
if(imageReturnedIntent != null)
{
Uri selectedImage = imageReturnedIntent.getData();
switch(requestCode) {
case SELECT_PHOTO:
if(resultCode == RESULT_OK)
{
Bitmap datifoto = null;
temp.setImageBitmap(null);
Uri picUri = null;
picUri = imageReturnedIntent.getData();//<- get Uri here from data intent
if(picUri !=null){
try {
datifoto = android.provider.MediaStore.Images.Media.getBitmap(this.getContentResolver(), picUri);
temp.setImageBitmap(datifoto);
} catch (FileNotFoundException e) {
throw new RuntimeException(e);
} catch (IOException e) {
throw new RuntimeException(e);
} catch (OutOfMemoryError e) {
Toast.makeText(getBaseContext(), "Image is too large. choose other", Toast.LENGTH_LONG).show();
}
}
}
break;
}
}
else
{
//Toast.makeText(getBaseContext(), "data null", Toast.LENGTH_SHORT).show();
}
}
import socket
from threading import *
serversocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
host = "192.168.1.3"
port = 8000
print (host)
print (port)
serversocket.bind((host, port))
class client(Thread):
def __init__(self, socket, address):
Thread.__init__(self)
self.sock = socket
self.addr = address
self.start()
def run(self):
while 1:
print('Client sent:', self.sock.recv(1024).decode())
self.sock.send(b'Oi you sent something to me')
serversocket.listen(5)
print ('server started and listening')
while 1:
clientsocket, address = serversocket.accept()
client(clientsocket, address)
This is a very VERY simple design for how you could solve it.
First of all, you need to either accept the client (server side) before going into your while 1
loop because in every loop you accept a new client, or you do as i describe, you toss the client into a separate thread which you handle on his own from now on.
Monkey patching is reopening the existing classes or methods in class at runtime and changing the behavior, which should be used cautiously, or you should use it only when you really need to.
As Python is a dynamic programming language, Classes are mutable so you can reopen them and modify or even replace them.
3 answers, which you can combine:
Set implicit wait immediately after creating the web driver instance:
_ = driver.Manage().Timeouts().ImplicitWait;
This will try to wait until the page is fully loaded on every page navigation or page reload.
After page navigation, call JavaScript return document.readyState
until "complete"
is returned. The web driver instance can serve as JavaScript executor. Sample code:
C#
new WebDriverWait(driver, MyDefaultTimeout).Until(
d => ((IJavaScriptExecutor) d).ExecuteScript("return document.readyState").Equals("complete"));
Java
new WebDriverWait(firefoxDriver, pageLoadTimeout).until(
webDriver -> ((JavascriptExecutor) webDriver).executeScript("return document.readyState").equals("complete"));
Check if the URL matches the pattern you expect.
Select the Object -> Format -> Selection Pane -> Double click to change the name
I think you might want:
String encodedFile = Base64.getEncoder().encodeToString(bytes);
I use a JavaScript port of the Mersenne Twister: https://gist.github.com/300494 It allows you to set the seed manually. Also, as mentioned in other answers, the Mersenne Twister is a really good PRNG.
Use the ALLOW_PAGE_LOCKS clause of ALTER/CREATE INDEX:
ALTER INDEX indexname ON tablename SET (ALLOW_PAGE_LOCKS = OFF);
No. You'll have to do separate updates:
UPDATE table
SET ID = 111111259
WHERE ID = 2555
UPDATE table
SET ID = 111111261
WHERE ID = 2724
UPDATE table
SET ID = 111111263
WHERE ID = 2021
UPDATE table
SET ID = 111111264
WHERE ID = 2017
I wanna Disable an Input Field on a form and when i submit the form the values from the disabled form is not submitted.
Use Case: i am trying to get Lat Lng from Google Map and wanna Display it.. but dont want the user to edit it.
You can use the readonly
property in your input field
<input type="text" readonly="readonly" />
To check what is your root directory go to httpd.conf file of apache and search for "DocumentRoot".The location following it is your root directory
You can use auto margins
Prior to alignment via
justify-content
andalign-self
, any positive free space is distributed to auto margins in that dimension.
So you can use one of these (or both):
p { margin-bottom: auto; } /* Push following elements to the bottom */
a { margin-top: auto; } /* Push it and following elements to the bottom */
.content {_x000D_
height: 200px;_x000D_
border: 1px solid;_x000D_
display: flex;_x000D_
flex-direction: column;_x000D_
}_x000D_
h1, h2 {_x000D_
margin: 0;_x000D_
}_x000D_
a {_x000D_
margin-top: auto;_x000D_
}
_x000D_
<div class="content">_x000D_
<h1>heading 1</h1>_x000D_
<h2>heading 2</h2>_x000D_
<p>Some text more or less</p>_x000D_
<a href="/" class="button">Click me</a>_x000D_
</div>
_x000D_
Alternatively, you can make the element before the a
grow to fill the available space:
p { flex-grow: 1; } /* Grow to fill available space */
.content {_x000D_
height: 200px;_x000D_
border: 1px solid;_x000D_
display: flex;_x000D_
flex-direction: column;_x000D_
}_x000D_
h1, h2 {_x000D_
margin: 0;_x000D_
}_x000D_
p {_x000D_
flex-grow: 1;_x000D_
}
_x000D_
<div class="content">_x000D_
<h1>heading 1</h1>_x000D_
<h2>heading 2</h2>_x000D_
<p>Some text more or less</p>_x000D_
<a href="/" class="button">Click me</a>_x000D_
</div>
_x000D_
time.time()
return the unix timestamp.
you could use datetime
library to get local time or UTC time.
import datetime
local_time = datetime.datetime.now()
print(local_time.strftime('%Y%m%d %H%M%S'))
utc_time = datetime.datetime.utcnow()
print(utc_time.strftime('%Y%m%d %H%M%S'))
A short solution:
use Dotenv;
with(new Dotenv(app()->environmentPath(), app()->environmentFile()))->overload();
with(new LoadConfiguration())->bootstrap(app());
In my case I needed to re-establish database connection after altering .env programmatically, but it didn't work , If you get into this trouble try this
app('db')->purge($connection->getName());
after reloading .env , that's because Laravel App could have accessed the default connection before and the \Illuminate\Database\DatabaseManager
needs to re-read config parameters.
Easy way to find angle between two vectors(works for n-dimensional vector),
Python code:
import numpy as np
vector1 = [1,0,0]
vector2 = [0,1,0]
unit_vector1 = vector1 / np.linalg.norm(vector1)
unit_vector2 = vector2 / np.linalg.norm(vector2)
dot_product = np.dot(unit_vector1, unit_vector2)
angle = np.arccos(dot_product) #angle in radian
# double background your script to have it detach from the tty
# cf. http://www.linux-mag.com/id/5981
(./program.sh &) &
Why not update the files on the local file system instead? You can read/write files into your applications sandboxed area.
http://developer.android.com/guide/topics/data/data-storage.html#filesInternal
Other alternatives you may want to look into are Shared Perferences and using Cache Files (all described at the link above)
Check the link Regular Expression Demo
use the below reg exp
[a-z] + [^0-9\s.]+|.(?!\d)
function trim(text, val) {
return text.replace(new RegExp('^'+val+'+|'+val+'+$','g'), '');
}
Last 5
var id="ctl03_Tabs1";_x000D_
var res = id.charAt(id.length-5)_x000D_
alert(res);
_x000D_
Last
_x000D_
var id="ctl03_Tabs1";_x000D_
var res = id.charAt(id.length-1)_x000D_
alert(res);
_x000D_
I would like introduce simple script to parse RSS:
$i = 0; // counter
$url = "http://www.banki.ru/xml/news.rss"; // url to parse
$rss = simplexml_load_file($url); // XML parser
// RSS items loop
print '<h2><img style="vertical-align: middle;" src="'.$rss->channel->image->url.'" /> '.$rss->channel->title.'</h2>'; // channel title + img with src
foreach($rss->channel->item as $item) {
if ($i < 10) { // parse only 10 items
print '<a href="'.$item->link.'">'.$item->title.'</a><br />';
}
$i++;
}
Put them in brackets []
:
var cleanString = dirtyString.replace(/[\|&;\$%@"<>\(\)\+,]/g, "");
I'm surprised nobody has mentioned the static method built right into System.Char
...
int val = (int)Char.GetNumericValue('8');
// val == 8
When your button is disabled it directly sets the opacity. So first of all we have to set its opacity as
.v-button{
opacity:1;
}
check the @viewchild
in your .ts
@ViewChild('ngOtpInput') ngOtpInput:any;
set the below code in your method were you want the fields to be clear.
yourMethod(){
this.ngOtpInput.setValue(yourValue);
}
I was also getting same below error:
Unable to connect to the server: dial tcp [::1]:8080: connectex: No connection could be made because the target machine actively refused it.
Then I just execute below command and found everything working fine.
PS C:> .\minikube.exe start
Starting local Kubernetes v1.10.0 cluster... Starting VM... Downloading Minikube ISO 150.53 MB / 150.53 MB [============================================] 100.00% 0s Getting VM IP address... Moving files into cluster... Downloading kubeadm v1.10.0 Downloading kubelet v1.10.0 Finished Downloading kubelet v1.10.0 Finished Downloading kubeadm v1.10.0 Setting up certs... Connecting to cluster... Setting up kubeconfig... Starting cluster components... Kubectl is now configured to use the cluster. Loading cached images from config file. PS C:> .\minikube.exe start Starting local Kubernetes v1.10.0 cluster... Starting VM... Getting VM IP address... Moving files into cluster... Setting up certs... Connecting to cluster... Setting up kubeconfig... Starting cluster components... Kubectl is now configured to use the cluster.
If you used maxLength = 6
, some times what you are entering those characters are added in top of the keyboard called suggestions. So when you deleting entered letters that time it will delete suggestions first and then actual text inside EditText
. For that you need to remove the suggestions.just add
android:inputType="textNoSuggestions"`
or
android:inputType="textFilter"
It will remove those suggestions.
I was facing the same issue then i saw while pushing my app some jar files which were loaded twice hence multiple dex error .Just go to your project properties -> Java Build Path and try unchecking jar which is being loaded twice.
The WhatsApp Architecture Facebook Bought For $19 Billion explains the architecture involved in design of whatsapp.
Here is the general explanation from the link
WhatsApp server is almost completely implemented in Erlang.
Server systems that do the backend message routing are done in Erlang.
Great achievement is that the number of active users is managed with a really small server footprint. Team consensus is that it is largely because of Erlang.
Interesting to note Facebook Chat was written in Erlang in 2009, but they went away from it because it was hard to find qualified programmers.
WhatsApp server has started from ejabberd
Ejabberd is a famous open source Jabber server written in Erlang.
Originally chosen because its open, had great reviews by developers, ease of start and the promise of Erlang’s long term suitability for large communication system.
The next few years were spent re-writing and modifying quite a few parts of ejabberd, including switching from XMPP to internally developed protocol, restructuring the code base and redesigning some core components, and making lots of important modifications to Erlang VM to optimize server performance.
To handle 50 billion messages a day the focus is on making a reliable system that works. Monetization is something to look at later, it’s far far down the road.
A primary gauge of system health is message queue length. The message queue length of all the processes on a node is constantly monitored and an alert is sent out if they accumulate backlog beyond a preset threshold. If one or more processes falls behind that is alerted on, which gives a pointer to the next bottleneck to attack.
Multimedia messages are sent by uploading the image, audio or video to be sent to an HTTP server and then sending a link to the content along with its Base64 encoded thumbnail (if applicable).
Some code is usually pushed every day. Often, it’s multiple times a day, though in general peak traffic times are avoided. Erlang helps being aggressive in getting fixes and features into production. Hot-loading means updates can be pushed without restarts or traffic shifting. Mistakes can usually be undone very quickly, again by hot-loading. Systems tend to be much more loosely-coupled which makes it very easy to roll changes out incrementally.
What protocol is used in Whatsapp app? SSL socket to the WhatsApp server pools. All messages are queued on the server until the client reconnects to retrieve the messages. The successful retrieval of a message is sent back to the whatsapp server which forwards this status back to the original sender (which will see that as a "checkmark" icon next to the message). Messages are wiped from the server memory as soon as the client has accepted the message
How does the registration process work internally in Whatsapp? WhatsApp used to create a username/password based on the phone IMEI number. This was changed recently. WhatsApp now uses a general request from the app to send a unique 5 digit PIN. WhatsApp will then send a SMS to the indicated phone number (this means the WhatsApp client no longer needs to run on the same phone). Based on the pin number the app then request a unique key from WhatsApp. This key is used as "password" for all future calls. (this "permanent" key is stored on the device). This also means that registering a new device will invalidate the key on the old device.
To obtain shared preferences, use the following method In your activity:
SharedPreferences prefs = this.getSharedPreferences(
"com.example.app", Context.MODE_PRIVATE);
To read preferences:
String dateTimeKey = "com.example.app.datetime";
// use a default value using new Date()
long l = prefs.getLong(dateTimeKey, new Date().getTime());
To edit and save preferences
Date dt = getSomeDate();
prefs.edit().putLong(dateTimeKey, dt.getTime()).apply();
The android sdk's sample directory contains an example of retrieving and storing shared preferences. Its located in the:
<android-sdk-home>/samples/android-<platformversion>/ApiDemos directory
Edit==>
I noticed, it is important to write difference between commit()
and apply()
here as well.
commit()
return true
if value saved successfully otherwise false
. It save values to SharedPreferences synchronously.
apply()
was added in 2.3 and doesn't return any value either on success or failure. It saves values to SharedPreferences immediately but starts an asynchronous commit.
More detail is here.
You can define a class
or id
for input fields.
Or
input {
line-height: 20px;
}
Hope this helps you.
Run ipconfig /flushdns from a command prompt. Apparently some people seem to think I posted this answer for sheer fun. That's why they down voted my answer. Perhaps an explanation would help them. When I used "SVN Update" it said it can't connect to the SVN repository although I could ping the server. After running ipconfig /flushdns the issue was fixed.
You have to create Different values folder for different screens . Like
values-sw720dp 10.1” tablet 1280x800 mdpi
values-sw600dp 7.0” tablet 1024x600 mdpi
values-sw480dp 5.4” 480x854 mdpi
values-sw480dp 5.1” 480x800 mdpi
values-xxhdpi 5.5" 1080x1920 xxhdpi
values-xxxhdpi 5.5" 1440x2560 xxxhdpi
values-xhdpi 4.7” 1280x720 xhdpi
values-xhdpi 4.65” 720x1280 xhdpi
values-hdpi 4.0” 480x800 hdpi
values-hdpi 3.7” 480x854 hdpi
values-mdpi 3.2” 320x480 mdpi
values-ldpi 3.4” 240x432 ldpi
values-ldpi 3.3” 240x400 ldpi
values-ldpi 2.7” 240x320 ldpi
For more information you may visit here
Different values folders in android
http://android-developers.blogspot.in/2011/07/new-tools-for-managing-screen-sizes.html
Edited By @humblerookie
You can make use of Android Studio plugin called Dimenify to auto generate dimension values for other pixel buckets based on custom scale factors. Its still in beta, be sure to notify any issues/suggestions you come across to the developer.
This code is working fine for me,
var a = serializer.Deserialize<List<Entity>>(json);
See this MSDN article and an example usage here on Stack Overflow.
Let's say that you have the following Linq/POCO class:
public class Color
{
public int ColorId { get; set; }
public string Name { get; set; }
}
And let's say that you have the following model:
public class PageModel
{
public int MyColorId { get; set; }
}
And, finally, let's say that you have the following list of colors. They could come from a Linq query, from a static list, etc.:
public static IEnumerable<Color> Colors = new List<Color> {
new Color {
ColorId = 1,
Name = "Red"
},
new Color {
ColorId = 2,
Name = "Blue"
}
};
In your view, you can create a drop down list like so:
<%= Html.DropDownListFor(n => n.MyColorId,
new SelectList(Colors, "ColorId", "Name")) %>
using System;
using System.IO;
using System.IO.Pipes;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
StartServer();
Task.Delay(1000).Wait();
//Client
var client = new NamedPipeClientStream("PipesOfPiece");
client.Connect();
StreamReader reader = new StreamReader(client);
StreamWriter writer = new StreamWriter(client);
while (true)
{
string input = Console.ReadLine();
if (String.IsNullOrEmpty(input)) break;
writer.WriteLine(input);
writer.Flush();
Console.WriteLine(reader.ReadLine());
}
}
static void StartServer()
{
Task.Factory.StartNew(() =>
{
var server = new NamedPipeServerStream("PipesOfPiece");
server.WaitForConnection();
StreamReader reader = new StreamReader(server);
StreamWriter writer = new StreamWriter(server);
while (true)
{
var line = reader.ReadLine();
writer.WriteLine(String.Join("", line.Reverse()));
writer.Flush();
}
});
}
}
}
You could also use
ImageIcon background = new ImageIcon("Background/background.png");
JLabel label = new JLabel();
label.setBounds(0, 0, x, y);
label.setIcon(background);
JPanel panel = new JPanel();
panel.setLayout(null);
panel.add(label);
if your working with a absolut value as layout.
@benregn @amirnissim I think the selection error comes from:
var suggestion_selected = $(".pac-item.pac-selected").length > 0;
The class pac-selected
should be pac-item-selected
, which explains why !suggestion_selected
always evaluate to true, causing the incorrect location to be selected when the enter key is pressed after using 'keyup' or 'keydown' to highlight the desired location.
With ref
you can write:
static public void DoSomething(ref TestRef t)
{
t = new TestRef();
}
And t will be changed after the method has completed.
I ran into this and only my local machine was having the problem. No other developers in our group nor my VM had the problem.
In the end it seemed to be related to a "targeting pack" Visual Studio 2017
This is actually on the main page of nltk.org:
>>> import nltk
>>> sentence = """At eight o'clock on Thursday morning
... Arthur didn't feel very good."""
>>> tokens = nltk.word_tokenize(sentence)
>>> tokens
['At', 'eight', "o'clock", 'on', 'Thursday', 'morning',
'Arthur', 'did', "n't", 'feel', 'very', 'good', '.']
You could put the async calls in a separate method and call that method in the constructor. Although, this may lead to a situation where some variable values not being available at the time you expect them.
public NewTravelPageVM(){
GetVenues();
}
async void GetVenues(){
var locator = CrossGeolocator.Current;
var position = await locator.GetPositionAsync();
Venues = await Venue.GetVenues(position.Latitude, position.Longitude);
}
And if you want to add a row, you can use a dictionary:
df = pd.DataFrame()
df = df.append({'name': 'Zed', 'age': 9, 'height': 2}, ignore_index=True)
which gives you:
age height name
0 9 2 Zed
You can use http://adodson.com/hello.js/ which has
My suspicion is that it has to do with how server-side controls are identified during processing. Rather than having to check every control at runtime by name to determine whether server-side processing needs to be done, it does a selection on the internal node representation by tag. The compiler checks to make sure that all controls that require server tags have them during the validation step.
If your column is of type DATE (as you say), then you don't need to convert it into a string first (in fact you would convert it implicitly to a string first, then explicitly to a date and again explicitly to a string):
SELECT TO_CHAR(COL1, 'mm/dd/yyyy') FROM TABLE1
The date format your seeing for your column is an artifact of the tool your using (TOAD, SQL Developer etc.) and it's language settings.
I had the same issue for a specific controller only - which was really weird. I had a folder in the root of the CI folder that had the same name as the controller I was trying to access... Because of that, CI was directing the request to this directory instead of the controller itself.
After removing this folder (which was there a bit by mistake), it all worked fine.
To be more clear, here is what it looked like:
/ci/controller/register.php
/ci/register/
I had to remove /ci/register/
.
It works for me on Vista. Some things to try:
Replace find
with the fully-qualified path of the find command. find
is a common tool name. There's a unix find that is very differet from the Windows built-in find. like this:
FOR /f %%a in ('dir ^|%windir%\system32\find.exe /i "myfile.txt"') DO SET fileDate=%%a
examine the output of the command in a cmd.exe window. To do that, You need to replace the %% with %.
FOR /f %a in ('dir ^|c:\windows\system32\find.exe /i "myfile.txt"') DO SET fileDate=%a
That may give you some ideas.
If that shows up as blank, then again, at a command prompt, try this:
dir | c:\windows\system32\find.exe /i "myfile.txt"
This should show you what you need to see.
If you still can't figure it out from that, edit your post to include what you see from these commands and someone will help you.
Also as a minor enhancement.
The main reason for the try/catch block is that e1 could be null for the initial movement. in addition to the try/catch, include a test for null and return. similar to the following
if (e1 == null || e2 == null) return false;
try {
...
} catch (Exception e) {}
return false;
ResourceManager and .resx are bit messy.
You could use Lexical.Localization¹ which allows embedding default value and culture specific values into the code, and be expanded in external localization files for futher cultures (like .json or .resx).
public class MyClass
{
/// <summary>
/// Localization root for this class.
/// </summary>
static ILine localization = LineRoot.Global.Type<MyClass>();
/// <summary>
/// Localization key "Ok" with a default string, and couple of inlined strings for two cultures.
/// </summary>
static ILine ok = localization.Key("Success")
.Text("Success")
.fi("Onnistui")
.sv("Det funkar");
/// <summary>
/// Localization key "Error" with a default string, and couple of inlined ones for two cultures.
/// </summary>
static ILine error = localization.Key("Error")
.Format("Error (Code=0x{0:X8})")
.fi("Virhe (Koodi=0x{0:X8})")
.sv("Sönder (Kod=0x{0:X8})");
public void DoOk()
{
Console.WriteLine( ok );
}
public void DoError()
{
Console.WriteLine( error.Value(0x100) );
}
}
¹ (I'm maintainer of that library)
If you have an association on a property pointing to the user (let's say Credit\Entity\UserCreditHistory#user
, picked from your example), then the syntax is quite simple:
public function getHistory($users) {
$qb = $this->entityManager->createQueryBuilder();
$qb
->select('a', 'u')
->from('Credit\Entity\UserCreditHistory', 'a')
->leftJoin('a.user', 'u')
->where('u = :user')
->setParameter('user', $users)
->orderBy('a.created_at', 'DESC');
return $qb->getQuery()->getResult();
}
Since you are applying a condition on the joined result here, using a LEFT JOIN
or simply JOIN
is the same.
If no association is available, then the query looks like following
public function getHistory($users) {
$qb = $this->entityManager->createQueryBuilder();
$qb
->select('a', 'u')
->from('Credit\Entity\UserCreditHistory', 'a')
->leftJoin(
'User\Entity\User',
'u',
\Doctrine\ORM\Query\Expr\Join::WITH,
'a.user = u.id'
)
->where('u = :user')
->setParameter('user', $users)
->orderBy('a.created_at', 'DESC');
return $qb->getQuery()->getResult();
}
This will produce a resultset that looks like following:
array(
array(
0 => UserCreditHistory instance,
1 => Userinstance,
),
array(
0 => UserCreditHistory instance,
1 => Userinstance,
),
// ...
)
Thread.start()
code registers the Thread with scheduler and the scheduler calls the run()
method. Also, Thread
is class while Runnable
is an interface.
Setup mine within a closure and with straight JavaScript, explanation provided in comments
(function() {_x000D_
_x000D_
//setup an object fully of arrays_x000D_
//alternativly it could be something like_x000D_
//{"yes":[{value:sweet, text:Sweet}.....]}_x000D_
//so you could set the label of the option tag something different than the name_x000D_
var bOptions = {_x000D_
"yes": ["sweet", "wohoo", "yay"],_x000D_
"no": ["you suck!", "common son"]_x000D_
};_x000D_
_x000D_
var A = document.getElementById('A');_x000D_
var B = document.getElementById('B');_x000D_
_x000D_
//on change is a good event for this because you are guarenteed the value is different_x000D_
A.onchange = function() {_x000D_
//clear out B_x000D_
B.length = 0;_x000D_
//get the selected value from A_x000D_
var _val = this.options[this.selectedIndex].value;_x000D_
//loop through bOption at the selected value_x000D_
for (var i in bOptions[_val]) {_x000D_
//create option tag_x000D_
var op = document.createElement('option');_x000D_
//set its value_x000D_
op.value = bOptions[_val][i];_x000D_
//set the display label_x000D_
op.text = bOptions[_val][i];_x000D_
//append it to B_x000D_
B.appendChild(op);_x000D_
}_x000D_
};_x000D_
//fire this to update B on load_x000D_
A.onchange();_x000D_
_x000D_
})();
_x000D_
<select id='A' name='A'>_x000D_
<option value='yes' selected='selected'>yes_x000D_
<option value='no'> no_x000D_
</select>_x000D_
<select id='B' name='B'>_x000D_
</select>
_x000D_
It seems you need DataFrame.var
:
Normalized by N-1 by default. This can be changed using the ddof argument
var1 = credit_card.var()
Sample:
#random dataframe
np.random.seed(100)
credit_card = pd.DataFrame(np.random.randint(10, size=(5,5)), columns=list('ABCDE'))
print (credit_card)
A B C D E
0 8 8 3 7 7
1 0 4 2 5 2
2 2 2 1 0 8
3 4 0 9 6 2
4 4 1 5 3 4
var1 = credit_card.var()
print (var1)
A 8.8
B 10.0
C 10.0
D 7.7
E 7.8
dtype: float64
var2 = credit_card.var(axis=1)
print (var2)
0 4.3
1 3.8
2 9.8
3 12.2
4 2.3
dtype: float64
If need numpy solutions with numpy.var
:
print (np.var(credit_card.values, axis=0))
[ 7.04 8. 8. 6.16 6.24]
print (np.var(credit_card.values, axis=1))
[ 3.44 3.04 7.84 9.76 1.84]
Differences are because by default ddof=1
in pandas
, but you can change it to 0
:
var1 = credit_card.var(ddof=0)
print (var1)
A 7.04
B 8.00
C 8.00
D 6.16
E 6.24
dtype: float64
var2 = credit_card.var(ddof=0, axis=1)
print (var2)
0 3.44
1 3.04
2 7.84
3 9.76
4 1.84
dtype: float64
To get a unique number:
function getUnique(){
return new Date().getTime().toString() + window.crypto.getRandomValues(new Uint32Array(1))[0];
}
// or
function getUniqueNumber(){
const now = new Date();
return Number([
now.getFullYear(),
now.getMonth(),
now.getDate(),
now.getHours(),
now.getMinutes(),
now.getUTCMilliseconds(),
window.crypto.getRandomValues(new Uint8Array(1))[0]
].join(""));
}
Example:
getUnique()
"15951973277543340653840"
for (let i=0; i<5; i++){
console.log( getUnique() );
}
15951974746301197061197
15951974746301600673248
15951974746302690320798
15951974746313778184640
1595197474631922766030
getUniqueNumber()
20206201121832230
for (let i=0; i<5; i++){
console.log( getUniqueNumber() );
}
2020620112149367
2020620112149336
20206201121493240
20206201121493150
20206201121494200
you can change the length using:
new Uint8Array(1)[0]
// or
new Uint16Array(1)[0]
// or
new Uint32Array(1)[0]
You could use the stopifnot()
function if you want the program to produce an error:
foo <- function(x) {
stopifnot(x > 500)
# rest of program
}
Ever heard about appserver
from techdivision?
It is written in php and works as a appserver managing multithreads for high traffic php applications. Is still in beta but very promesing.
You can use this little PHP library. It sends the headers and give you an object to use it easily.
It looks like :
<?php
// Include the json class
include('includes/json.php');
// Then create the PHP-Json Object to suits your needs
// Set a variable ; var name = {}
$Json = new json('var', 'name');
// Fire a callback ; callback({});
$Json = new json('callback', 'name');
// Just send a raw JSON ; {}
$Json = new json();
// Build data
$object = new stdClass();
$object->test = 'OK';
$arraytest = array('1','2','3');
$jsonOnly = '{"Hello" : "darling"}';
// Add some content
$Json->add('width', '565px');
$Json->add('You are logged IN');
$Json->add('An_Object', $object);
$Json->add("An_Array",$arraytest);
$Json->add("A_Json",$jsonOnly);
// Finally, send the JSON.
$Json->send();
?>
Sometimes you can find tricks to further combine statments.
Like for example:
0 + 0 = 0
and
"" + 0 = 0
so
PageCount == 0
PageCount == ''
can be written like:
PageCount+0 == 0
In javascript 0
is just as good as false
inverting !
it would turn 0
into true
!PageCount+0
for a grand total of:
if ( Type == 2 && !PageCount+0 ) PageCount = elm.value;
Use the document.createElement function and then add it as a child of your select.
var newOption = document.createElement("option");
newOption.text = 'the options text';
newOption.value = 'some value if you want it';
daySelect.appendChild(newOption);
Both of these functions look equally valid in terms of reading cookie. You can shave a few bytes off though (and it really is getting into Code Golf territory here):
function readCookie(name) {
var nameEQ = name + "=", ca = document.cookie.split(';'), i = 0, c;
for(;i < ca.length;i++) {
c = ca[i];
while (c[0]==' ') c = c.substring(1);
if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length);
}
return null;
}
All I did with this is collapse all the variable declarations into one var statement, removed the unnecessary second arguments in calls to substring, and replace the one charAt call into an array dereference.
This still isn't as short as the second function you provided, but even that can have a few bytes taken off:
function read_cookie(key)
{
var result;
return (result = new RegExp('(^|; )' + encodeURIComponent(key) + '=([^;]*)').exec(document.cookie)) ? result[2] : null;
}
I changed the first sub-expression in the regular expression to be a capturing sub-expression, and changed the result[1] part to result[2] to coincide with this change; also removed the unnecessary parens around result[2].
There are 4 dimensions of the tensor you want to convert.
[:, ::-1, :, :]
:
means that the first dimension should be copied as it is and converted, same goes for the third and fourth dimension.
::-1
means that for the second axes it reverses the the axes
You can better understand what Looper is in the context of GUI framework. Looper is made to do 2 things.
1) Looper transforms a normal thread, which terminates when its run() method return, into something run continuously until Android app is running, which is needed in GUI framework (Technically, it still terminates when run() method return. But let me clarify what I mean in below).
2) Looper provides a queue where jobs to be done are enqueued, which is also needed in GUI framework.
As you may know, when an application is launched, the system creates a thread of execution for the application, called “main”, and Android applications normally run entirely on a single thread by default the “main thread”. But main thread is not some secret, special thread. It's just a normal thread similar to threads you create with new Thread()
code, which means it terminates when its run() method return! Think of below example.
public class HelloRunnable implements Runnable {
public void run() {
System.out.println("Hello from a thread!");
}
public static void main(String args[]) {
(new Thread(new HelloRunnable())).start();
}
}
Now, let's apply this simple principle to Android apps. What would happen if an Android app runs on normal thread? A thread called "main" or "UI" or whatever starts your application, and draws all UI. So, the first screen is displayed to users. So what now? The main thread terminates? No, it shouldn’t. It should wait until users do something, right? But how can we achieve this behavior? Well, we can try with Object.wait()
or Thread.sleep()
. For example, main thread finishes its initial job to display first screen, and sleeps. It awakes, which means interrupted, when a new job to do is fetched. So far so good, but at this moment we need a queue-like data structure to hold multiple jobs. Think about a case when a user touches screen serially, and a task takes longer time to finish. So, we need to have a data structure to hold jobs to be done in first-in-first-out manner. Also, you may imagine, implementing ever-running-and-process-job-when-arrived thread using interrupt is not easy, and leads to complex and often unmaintainable code. We'd rather create a new mechanism for such purpose, and that is what Looper is all about. The official document of Looper class says, "Threads by default do not have a message loop associated with them", and Looper is a class "used to run a message loop for a thread". Now you can understand what it means.
To make things more clear, let's check the code where main thread is transformed. It all happens in ActivityThread class. In its main() method, you can find below code, which turns a normal main thread into something what we need.
public final class ActivityThread {
...
public static void main(String[] args) {
...
Looper.prepareMainLooper();
Looper.loop();
...
}
}
and Looper.loop()
method loop infinitely and dequeue a message and process one at a time:
public static void loop() {
...
for (;;) {
Message msg = queue.next(); // might block
if (msg == null) {
// No message indicates that the message queue is quitting.
return;
}
...
msg.target.dispatchMessage(msg);
...
}
}
So, basically Looper is a class that is made to address a problem that occurs in GUI framework. But this kind of needs can also happen in other situation as well. Actually it is a pretty famous pattern for multi threads application, and you can learn more about it in "Concurrent Programming in Java" by Doug Lea(Especially, chapter 4.1.4 "Worker Threads" would be helpful). Also, you can imagine this kind of mechanism is not unique in Android framework, but all GUI framework may need somewhat similar to this. You can find almost same mechanism in Java Swing framework.
@ Merk
For ur solution insted of lambda expression you can use following code:
//var tt = (TranslateTransform)((TransformGroup)image.RenderTransform).Children.First(tr => tr is TranslateTransform);
TranslateTransform tt = null;
TransformGroup transformGroup = (TransformGroup)grid.RenderTransform;
for (int i = 0; i < transformGroup.Children.Count; i++)
{
if (transformGroup.Children[i] is TranslateTransform)
tt = (TranslateTransform)transformGroup.Children[i];
}
this code can be use as is for .Net Frame work 3.0 or 2.0
Hope It helps you :-)
$ conda install nb_conda_kernels
(in the conda environment where you run jupyter notebook) will make all conda envs available automatically. For access to other environments, the respective kernels must be installed. Here's the ref.
To get rid of the white color you have to set the background-color to transparent:
button {
font-size: 18px;
border: 2px solid #AD235E;
border-radius: 100px;
width: 150px;
height: 150px;
background-color: transparent; /* like this */
}
content=`wget -O - $url`
See this: Spring @PropertySource using YAML
I think the 3rd answer has what you're looking for, i.e have a separate POJO to map your yaml values into:
@ConfigurationProperties(path="classpath:/appprops.yml", name="db")
public class DbProperties {
private String url;
private String username;
private String password;
...
}
Then annotate your test class with this:
@EnableConfigurationProperties(DbProperties.class)
public class PropertiesUsingService {
@Autowired private DbProperties dbProperties;
}
If you don't need the output in real time (i.e. as the program is writing it) you could add
type windows-dir.txt
after that line.
Playlist hack didn't work for me either. Working workaround for September 2018 (bonus: set width and height by CSS for #yt-wrap
instead of hard-coding it in JS):
<div id="yt-wrap">
<!-- 1. The <iframe> (and video player) will replace this <div> tag. -->
<div id="ytplayer"></div>
</div>
<script>
// 2. This code loads the IFrame Player API code asynchronously.
var tag = document.createElement('script');
tag.src = "https://www.youtube.com/player_api";
var firstScriptTag = document.getElementsByTagName('script')[0];
firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);
// 3. This function creates an <iframe> (and YouTube player)
// after the API code downloads.
var player;
function onYouTubePlayerAPIReady() {
player = new YT.Player('ytplayer', {
width: '100%',
height: '100%',
videoId: 'VIDEO_ID',
events: {
'onReady': onPlayerReady,
'onStateChange': onPlayerStateChange
}
});
}
// 4. The API will call this function when the video player is ready.
function onPlayerReady(event) {
event.target.playVideo();
player.mute(); // comment out if you don't want the auto played video muted
}
// 5. The API calls this function when the player's state changes.
// The function indicates that when playing a video (state=1),
// the player should play for six seconds and then stop.
function onPlayerStateChange(event) {
if (event.data == YT.PlayerState.ENDED) {
player.seekTo(0);
player.playVideo();
}
}
function stopVideo() {
player.stopVideo();
}
</script>
The best solution would be to read in the file, then decide which kind of image it is and send out the appropriate header
$filename = basename($file);
$file_extension = strtolower(substr(strrchr($filename,"."),1));
switch( $file_extension ) {
case "gif": $ctype="image/gif"; break;
case "png": $ctype="image/png"; break;
case "jpeg":
case "jpg": $ctype="image/jpeg"; break;
case "svg": $ctype="image/svg+xml"; break;
default:
}
header('Content-type: ' . $ctype);
(Note: the correct content-type for JPG files is image/jpeg
)
map
doesn't relate to a Cartesian product at all, although I imagine someone well versed in functional programming could come up with some impossible to understand way of generating a one using map
.
map
in Python 3 is equivalent to this:
def map(func, iterable):
for i in iterable:
yield func(i)
and the only difference in Python 2 is that it will build up a full list of results to return all at once instead of yield
ing.
Although Python convention usually prefers list comprehensions (or generator expressions) to achieve the same result as a call to map
, particularly if you're using a lambda expression as the first argument:
[func(i) for i in iterable]
As an example of what you asked for in the comments on the question - "turn a string into an array", by 'array' you probably want either a tuple or a list (both of them behave a little like arrays from other languages) -
>>> a = "hello, world"
>>> list(a)
['h', 'e', 'l', 'l', 'o', ',', ' ', 'w', 'o', 'r', 'l', 'd']
>>> tuple(a)
('h', 'e', 'l', 'l', 'o', ',', ' ', 'w', 'o', 'r', 'l', 'd')
A use of map
here would be if you start with a list of strings instead of a single string - map
can listify all of them individually:
>>> a = ["foo", "bar", "baz"]
>>> list(map(list, a))
[['f', 'o', 'o'], ['b', 'a', 'r'], ['b', 'a', 'z']]
Note that map(list, a)
is equivalent in Python 2, but in Python 3 you need the list
call if you want to do anything other than feed it into a for
loop (or a processing function such as sum
that only needs an iterable, and not a sequence). But also note again that a list comprehension is usually preferred:
>>> [list(b) for b in a]
[['f', 'o', 'o'], ['b', 'a', 'r'], ['b', 'a', 'z']]
You should clear out your listbbox prior to binding:
Me.ddl2.Items.Clear()
' now set datasource and bind
I made a simple (stupid or not) bash script, that extracts the longs from the adb shell, converts them to timestamps and shows it in red.
echo "Please set a search filter"
read search
adb shell dumpsys alarm | grep $search | (while read i; do echo $i; _DT=$(echo $i | grep -Eo 'when\s+([0-9]{10})' | tr -d '[[:alpha:][:space:]]'); if [ $_DT ]; then echo -e "\e[31m$(date -d @$_DT)\e[0m"; fi; done;)
try it ;)
By using collation or casting to binary, like this:
SELECT *
FROM Users
WHERE
Username = @Username COLLATE SQL_Latin1_General_CP1_CS_AS
AND Password = @Password COLLATE SQL_Latin1_General_CP1_CS_AS
AND Username = @Username
AND Password = @Password
The duplication of username/password exists to give the engine the possibility of using indexes. The collation above is a Case Sensitive collation, change to the one you need if necessary.
The second, casting to binary, could be done like this:
SELECT *
FROM Users
WHERE
CAST(Username as varbinary(100)) = CAST(@Username as varbinary))
AND CAST(Password as varbinary(100)) = CAST(@Password as varbinary(100))
AND Username = @Username
AND Password = @Password
I guess you want to do this in i line. It is possible (a bit of juggling though =^)
new StringBuilder(new StringBuilder("Düsseldorf - Zentrum - Günnewig Uebachs").reverse().toString().split(" - ")[0]).reverse()
tadaa, one line -> the result you want (if you split on " - " (space minus space) instead of only "-" (minus) you will loose the annoying space before the partition too =^) so "Günnewig Uebachs" instead of " Günnewig Uebachs" (with a space as first character)
Nice extra -> no need for extra JAR files in the lib folder so you can keep your application light weight.
To redirect Without Query String add below lines in Server block under listen port line:
if ($uri ~ .*.containingString$) {
return 301 https://$host/$uri/;
}
With Query String:
if ($uri ~ .*.containingString$) {
return 301 https://$host/$uri/?$query_string;
}
in my case, I had a <TEXTAREA>
tag from old html while converting to angular. Had to change to <textarea>
.
The fact that you're using a view model has no bearing. The standard way of using PagedList
is to store "one page of items" as a ViewBag
variable. All you have to determine is what collection constitutes what you'll be paging over. You can't logically page multiple collections at the same time, so assuming you chose Instructors
:
ViewBag.OnePageOfItems = myViewModelInstance.Instructors.ToPagedList(pageNumber, 10);
Then, the rest of the standard code works as it always has.
I was having this same problem too, I while multiple canvas elements with position:absolute does the job, if you want to save the output into an image, that's not going to work.
So I went ahead and did a simple layering "system" to code as if each layer had its own code, but it all gets rendered into the same element.
https://github.com/federicojacobi/layeredCanvas
I intend to add extra capabilities, but for now it will do.
You can do multiple functions and call them in order to "fake" layers.
Its simple. You just have to set the upstream for the current branch
$ git clone repo
$ git checkout -b newbranch
$ git branch --set-upstream-to=origin/branch newbranch
$ git pull
That's all
I think Amith Koujalgi is correct but also, in cases where the webservice responses are in JSON then it might be more useful to see the results in a clean JSON format instead of a very long string. Just add | grep }| python -mjson.tool to the end of curl commands here is two examples:
GET approach with JSON result
curl -i -H "Accept: application/json" http://someHostName/someEndpoint | grep }| python -mjson.tool
POST approach with JSON result
curl -X POST -H "Accept: Application/json" -H "Content-Type: application/json" http://someHostName/someEndpoint -d '{"id":"IDVALUE","name":"Mike"}' | grep }| python -mjson.tool
The resolution is to use TypedQuery instead. When creating a query from the EntityManager instead call it like this:
TypedQuery<[YourClass]> query = entityManager.createQuery("[your sql]", [YourClass].class);
List<[YourClass]> list = query.getResultList(); //no type warning
This also works the same for named queries, native named queries, etc. The corresponding methods have the same names as the ones that would return the vanilla query. Just use this instead of a Query whenever you know the return type.
If you have a good reason to set aside culture-dependent formatting and get explicit control over whether or not there's a space between the value and the "%", and whether the "%" is leading or trailing, you can use NumberFormatInfo's PercentPositivePattern and PercentNegativePattern properties.
For example, to get a decimal value with a trailing "%" and no space between the value and the "%":
myValue.ToString("P2", new NumberFormatInfo { PercentPositivePattern = 1, PercentNegativePattern = 1 });
More complete example:
using System.Globalization;
...
decimal myValue = -0.123m;
NumberFormatInfo percentageFormat = new NumberFormatInfo { PercentPositivePattern = 1, PercentNegativePattern = 1 };
string formattedValue = myValue.ToString("P2", percentageFormat); // "-12.30%" (in en-us)
It's not good to keep changing the gulp & npm versions in-order to fix the errors. I was getting several exceptions last days after reinstall my working machine. And wasted tons of minutes to re-install & fixing those.
So, I decided to upgrade all to latest versions:
npm -v : v12.13.0
node -v : 6.13.0
gulp -v : CLI version: 2.2.0 Local version: 4.0.2
This error is getting because of the how it has coded in you gulpfile but not the version mismatch. So, Here you have to change 2 things in the gulpfile to aligned with Gulp version 4. Gulp 4 has changed how initiate the task than Version 3.
gulp.task('serve', ['sass'], function() {..});
But in V4 it should be like:
function serve() {
...
}
gulp.task('serve', gulp.series(sass));
gulp.task('serve', ['sass'], function() { ... });
But in V4, it should be:
gulp.task('serve', gulp.series(sass));
insert into run(id,name,dob)values(&id,'&name',[what should I write here?]);
insert into run(id,name,dob)values(&id,'&name',TO_DATE('&dob','YYYY-MM-DD'));
Unfortunately std::map::operator[]
is a non-const member function, and you have a const reference.
You either need to change the signature of function
or do:
MAP::const_iterator pos = map.find("string");
if (pos == map.end()) {
//handle the error
} else {
std::string value = pos->second;
...
}
operator[]
handles the error by adding a default-constructed value to the map and returning a reference to it. This is no use when all you have is a const reference, so you will need to do something different.
You could ignore the possibility and write string value = map.find("string")->second;
, if your program logic somehow guarantees that "string"
is already a key. The obvious problem is that if you're wrong then you get undefined behavior.
I faced the same issue , it resolved by below change in pom.xml :
<build>
<testSourceDirectory>test</testSourceDirectory>
...
changed to:
<build>
<testSourceDirectory>${project.basedir}/src/test/java</testSourceDirectory>
Use "in" or "where".
Its gonna be something like this:
db.mycollection.find( { $where : function() {
return ( this.startTime < Now() && this.expireTime > Now() || this.expireTime == null ); } } );
Reducing the image size before output results in something that looks sharper, in my case:
convert -density 300 a.pdf -resize 25% a.png
Add:
using System.Linq;
to the top of your file.
And then:
Car[] carList = ...
var carMake =
from item in carList
where item.Model == "bmw"
select item.Make;
or if you prefer the fluent syntax:
var carMake = carList
.Where(item => item.Model == "bmw")
.Select(item => item.Make);
Things to pay attention to:
item.Make
in the select
clause instead if s.Make
as in your code.item
and .Model
in your where
clause