I recommend IdentityServer.This is a .NET Foundation project and covers many issues about authentication and authorization.
IdentityServer is a .NET/Katana-based framework and hostable component that allows implementing single sign-on and access control for modern web applications and APIs using protocols like OpenID Connect and OAuth2. It supports a wide range of clients like mobile, web, SPAs and desktop applications and is extensible to allow integration in new and existing architectures.
check out the documentation and the demo.
var specialChars = "<>@!#$%^&*()_+[]{}?:;|'\"\\,./~`-="
var check = function(string){
for(i = 0; i < specialChars.length;i++){
if(string.indexOf(specialChars[i]) > -1){
return true
}
}
return false;
}
if(check($('#Search').val()) == false){
// Code that needs to execute when none of the above is in the string
}else{
alert('Your search string contains illegal characters.');
}
Try to use:
mvn clean package install
This command should install your artifacts in you local maven repo.
PS: I see that this is an old question, but it may be helpful for somebody in the future.
Seems you forgot the ''
of your string.
In [43]: df['Value'] = df.apply(lambda row: my_test(row['a'], row['c']), axis=1)
In [44]: df
Out[44]:
a b c Value
0 -1.674308 foo 0.343801 0.044698
1 -2.163236 bar -2.046438 -0.116798
2 -0.199115 foo -0.458050 -0.199115
3 0.918646 bar -0.007185 -0.001006
4 1.336830 foo 0.534292 0.268245
5 0.976844 bar -0.773630 -0.570417
BTW, in my opinion, following way is more elegant:
In [53]: def my_test2(row):
....: return row['a'] % row['c']
....:
In [54]: df['Value'] = df.apply(my_test2, axis=1)
What you're looking for is
j.d.length
The d is the key. At least it is in my case, I'm using a .NET webservice.
$.ajax({
type: "POST",
url: "CantTellU.asmx",
data: "{'userID' : " + parseInt($.query.get('ID')) + " }",
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function(msg, status) {
ApplyTemplate(msg);
alert(msg.d.length);
}
});
The best way is to declare the variable as a Single
or a Double
depending on the precision you need. The data type Single
utilizes 4 Bytes and has the range of -3.402823E38 to 1.401298E45. Double
uses 8 Bytes.
You can declare as follows:
Dim decAsdf as Single
or
Dim decAsdf as Double
Here is an example which displays a message box with the value of the variable after calculation. All you have to do is put it in a module and run it.
Sub doubleDataTypeExample()
Dim doubleTest As Double
doubleTest = 0.0000045 * 0.005 * 0.01
MsgBox "doubleTest = " & doubleTest
End Sub
When importing an existing Gradle project (one with a build.gradle
) into IntelliJ IDEA, when presented with the following screen, select Import from external model -> Gradle.
Optionally, select Auto Import on the next screen to automatically import new dependencies.
This is what helped me to understand the difference, thanks to a blog post by Pascal Precht.
A service is a method on a module that takes a name and a function that defines the service. You can inject and use that particular service in other components, like controllers, directives and filters. A factory is a method on a module and it also takes a name and a function, that defines the factory. We can also inject and use the it same way we did with the service.
Objects created with new use the value of the prototype property of their constructor function as their prototype, so I found the Angular code that calls Object.create(), that I believe is the service constructor function when it gets instantiated. However, a factory function is really just a function that gets called, which is why we have to return an object literal for the factory.
Here is the angular 1.5 code I found for factory:
var needsRecurse = false;
var destination = copyType(source);
if (destination === undefined) {
destination = isArray(source) ? [] : Object.create(getPrototypeOf(source));
needsRecurse = true;
}
Angular source code snippet for the factory() function:
function factory(name, factoryFn, enforce) {
return provider(name, {
$get: enforce !== false ? enforceReturnValue(name, factoryFn) : factoryFn
});
}
It takes the name and the factory function that is passed and returns a provider with the same name, that has a $get method which is our factory function. Whenever you ask the injector for a specific dependency, it basically asks the corresponding provider for an instance of that service, by calling the $get() method. That’s why $get() is required, when creating providers.
Here is the angular 1.5 code for service.
function service(name, constructor) {
return factory(name, ['$injector', function($injector) {
return $injector.instantiate(constructor);
}]);
}
It turns out that when we call service(), it actually calls factory()! However, it doesn’t just pass our service constructor function to the factory as is. It also passes a function that asks the injector to instantiate an object by the given constructor.
In other words, if we inject MyService somewhere, what happens in the code is:
MyServiceProvider.$get(); // return the instance of the service
To restate it again, a service calls a factory, which is a $get() method on the corresponding provider. Moreover, $injector.instantiate() is the method that ultimately calls Object.create() with the constructor function. That’s why we use "this" in services.
For ES5 it doesn't matter which we use: service() or factory(), it’s always a factory that is called which creates a provider for our service.
You can do the exact same thing with services as well though. A service is a constructor function, however, that doesn’t prevent us from returning object literals. So we can take our service code and write it in a way that it basically does the exact same thing as our factory or in other words, you can write a service as a factory to return an object.
Why do most people recommend to use factories over services? This is the best answer I've seen which comes from Pawel Kozlowski's book: Mastering Web Application Development with AngularJS.
The factory method is the most common way of getting objects into AngularJS dependency injection system. It is very flexible and can contain sophisticated creation logic. Since factories are regular functions, we can also take advantage of a new lexical scope to simulate "private" variables. This is very useful as we can hide implementation details of a given service."
I have a large file in excel dealing with purchase and sale of mutual fund units. Number of rows in a worksheet exceeds 4000. I have no experience with VBA and would like to work with basic excel. Taking the cue from the solutions suggested above, I tried to solve the problem ( to insert blank rows automatically) in the following manner:
This method also may be tried by the readers.
I tried t.boolean :active, :default => 1 in migration file for creating entire table. After ran that migration when i checked in db it made as null. Even though i told default as "1". After that slightly i changed migration file like this then it worked for me for setting default value on create table migration file.
t.boolean :active, :null => false,:default =>1. Worked for me.
My Rails framework version is 4.0.0
Removing the name from your binding will make it apply to all endpoints, and should produce the desired results. As so:
<services>
<service name="Service.IService">
<clear />
<endpoint binding="basicHttpBinding" contract="Service.IService" />
</service>
</services>
<bindings>
<basicHttpBinding>
<binding maxBufferSize="2147483647" maxReceivedMessageSize="2147483647">
<readerQuotas maxDepth="32" maxStringContentLength="2147483647"
maxArrayLength="16348" maxBytesPerRead="4096" maxNameTableCharCount="16384" />
</binding>
</basicHttpBinding>
<webHttpBinding>
<binding maxBufferSize="2147483647" maxReceivedMessageSize="2147483647" />
</webHttpBinding>
</bindings>
Also note that I removed the bindingConfiguration
attribute from the endpoint node. Otherwise you would get an exception.
This same solution was found here : Problem with large requests in WCF
You can find a C# sample implementation here for the IMAGE_FILE_HEADER
solution
you can also use:
pip install package==0.5.*
which is more consistent and easy to read.
You can do this after you validate your data.
if myform.is_valid():
data = myform.cleaned_data
field = data['field']
Also, read the django docs. They are perfect.
this one also gives the no.of lines in a file.
a=open('filename.txt','r')
l=a.read()
count=l.splitlines()
print(len(count))
Following the steps on https://code.visualstudio.com/docs/customization/colorizer#_common-questions worked well for me:
To extend an existing colorizer, you would create a simple package.json in a new folder under .vscode/extensions and provide the extensionDependencies attribute specifying the customization you want to add to. In the example below, an extension .mmd is added to the markdown colorizer. Note that not only must the extensionDependency name match the customization but also the language id must match the language id of the colorizer you are extending.
{
"name": "MyMarkdown",
"version": "0.0.1",
"engines": {
"vscode": "0.10.x"
},
"publisher": "none",
"extensionDependencies": [
"markdown"
],
"contributes": {
"languages": [{
"id": "markdown",
"aliases": ["mmd"],
"extensions": [".mmd"]
}]
}
}
To save $4.99 for a one time use and no dealing with HomeBrew and no counting empty lines.
find . -name "*.swift" -print0 | xargs -0 wc -l
If you want to exclude pods:
find . -path ./Pods -prune -o -name "*.swift" -print0 ! -name "/Pods" | xargs -0 wc -l
If your project has objective c and swift:
find . -type d \( -path ./Pods -o -path ./Vendor \) -prune -o \( -iname \*.m -o -iname \*.mm -o -iname \*.h -o -iname \*.swift \) -print0 | xargs -0 wc -l
I know this is a late answer, but I found this question because I had the same problem. I think I found the answer in this post on lexandera.com. The code below is basically a cut-and-paste from the site. It seems to do the trick.
final Context myApp = this;
/* An instance of this class will be registered as a JavaScript interface */
class MyJavaScriptInterface
{
@JavascriptInterface
@SuppressWarnings("unused")
public void processHTML(String html)
{
// process the html as needed by the app
}
}
final WebView browser = (WebView)findViewById(R.id.browser);
/* JavaScript must be enabled if you want it to work, obviously */
browser.getSettings().setJavaScriptEnabled(true);
/* Register a new JavaScript interface called HTMLOUT */
browser.addJavascriptInterface(new MyJavaScriptInterface(), "HTMLOUT");
/* WebViewClient must be set BEFORE calling loadUrl! */
browser.setWebViewClient(new WebViewClient() {
@Override
public void onPageFinished(WebView view, String url)
{
/* This call inject JavaScript into the page which just finished loading. */
browser.loadUrl("javascript:window.HTMLOUT.processHTML('<head>'+document.getElementsByTagName('html')[0].innerHTML+'</head>');");
}
});
/* load a web page */
browser.loadUrl("http://lexandera.com/files/jsexamples/gethtml.html");
It's the implementations that doesn't support multi-threading. Currently Google Gears is providing a way to use some form of concurrency by executing external processes but that's about it.
The new browser Google is supposed to release today (Google Chrome) executes some code in parallel by separating it in process.
The core language, of course can have the same support as, say Java, but support for something like Erlang's concurrency is nowhere near the horizon.
Just as a matter of fact:
data_joined = dat1.join(dat2)
print(data_joined)
If the page elements and their background images are already in the DOM (i.e. you are not creating/changing them dynamically), then their background images will already be loaded. At that point, you may want to look at compression methods :)
I thought I'd just add that in python 3, filter() is actually an iterator object, so you'd have to pass your filter method call to list() in order to build the filtered list. So in python 2:
lst_a = range(25) #arbitrary list
lst_b = [num for num in lst_a if num % 2 == 0]
lst_c = filter(lambda num: num % 2 == 0, lst_a)
lists b and c have the same values, and were completed in about the same time as filter() was equivalent [x for x in y if z]. However, in 3, this same code would leave list c containing a filter object, not a filtered list. To produce the same values in 3:
lst_a = range(25) #arbitrary list
lst_b = [num for num in lst_a if num % 2 == 0]
lst_c = list(filter(lambda num: num %2 == 0, lst_a))
The problem is that list() takes an iterable as it's argument, and creates a new list from that argument. The result is that using filter in this way in python 3 takes up to twice as long as the [x for x in y if z] method because you have to iterate over the output from filter() as well as the original list.
As the instructions state on the iTuneconnect Developer Guidelines you need to ensure that you are the "team agent"
to delete apps. This is stated in the quote below from the developer guidelines.
If the Delete App button isn’t displayed, check that you’re the team agent and that the app is in one of the statuses that allow the app to be deleted.
I have just checked on my account by logging in as the main account holder and the delete button is there for an app that I have previously removed from sale but when I have looked in as another user they don't have this permission, only the main account holder seems to have it.
The identity used to create the connection defines what tables you can see in Oracle. Did you provide different credentials when setting up the connection for the new version?
Edit 2014/01: improved example usage to include the nonVideoLayout, videoLayout, and videoLoading views, for those users requesting more example code for better understading.
Edit 2013/12: some bug fixes related to Sony Xperia devices compatibility, but which in fact affected all devices.
Edit 2013/11: after the release of Android 4.4 KitKat (API level 19) with its new Chromium webview, I had to work hard again. Several improvements were made. You should update to this new version. I release this source under WTFPL.
Edit 2013/04: after 1 week of hard work, I finally have achieved everything I needed. I think this two generic classes that I have created can solve all you problems.
VideoEnabledWebChromeClient
can be used alone if you do not require the functionality that VideoEnabledWebView
adds. But VideoEnabledWebView
must always rely on a VideoEnabledWebChromeClient
. Please read all the comments of the both classes carefully.
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnCompletionListener;
import android.media.MediaPlayer.OnErrorListener;
import android.media.MediaPlayer.OnPreparedListener;
import android.view.SurfaceView;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.webkit.WebChromeClient;
import android.widget.FrameLayout;
/**
* This class serves as a WebChromeClient to be set to a WebView, allowing it to play video.
* Video will play differently depending on target API level (in-line, fullscreen, or both).
*
* It has been tested with the following video classes:
* - android.widget.VideoView (typically API level <11)
* - android.webkit.HTML5VideoFullScreen$VideoSurfaceView/VideoTextureView (typically API level 11-18)
* - com.android.org.chromium.content.browser.ContentVideoView$VideoSurfaceView (typically API level 19+)
*
* Important notes:
* - For API level 11+, android:hardwareAccelerated="true" must be set in the application manifest.
* - The invoking activity must call VideoEnabledWebChromeClient's onBackPressed() inside of its own onBackPressed().
* - Tested in Android API levels 8-19. Only tested on http://m.youtube.com.
*
* @author Cristian Perez (http://cpr.name)
*
*/
public class VideoEnabledWebChromeClient extends WebChromeClient implements OnPreparedListener, OnCompletionListener, OnErrorListener
{
public interface ToggledFullscreenCallback
{
public void toggledFullscreen(boolean fullscreen);
}
private View activityNonVideoView;
private ViewGroup activityVideoView;
private View loadingView;
private VideoEnabledWebView webView;
private boolean isVideoFullscreen; // Indicates if the video is being displayed using a custom view (typically full-screen)
private FrameLayout videoViewContainer;
private CustomViewCallback videoViewCallback;
private ToggledFullscreenCallback toggledFullscreenCallback;
/**
* Never use this constructor alone.
* This constructor allows this class to be defined as an inline inner class in which the user can override methods
*/
@SuppressWarnings("unused")
public VideoEnabledWebChromeClient()
{
}
/**
* Builds a video enabled WebChromeClient.
* @param activityNonVideoView A View in the activity's layout that contains every other view that should be hidden when the video goes full-screen.
* @param activityVideoView A ViewGroup in the activity's layout that will display the video. Typically you would like this to fill the whole layout.
*/
@SuppressWarnings("unused")
public VideoEnabledWebChromeClient(View activityNonVideoView, ViewGroup activityVideoView)
{
this.activityNonVideoView = activityNonVideoView;
this.activityVideoView = activityVideoView;
this.loadingView = null;
this.webView = null;
this.isVideoFullscreen = false;
}
/**
* Builds a video enabled WebChromeClient.
* @param activityNonVideoView A View in the activity's layout that contains every other view that should be hidden when the video goes full-screen.
* @param activityVideoView A ViewGroup in the activity's layout that will display the video. Typically you would like this to fill the whole layout.
* @param loadingView A View to be shown while the video is loading (typically only used in API level <11). Must be already inflated and without a parent view.
*/
@SuppressWarnings("unused")
public VideoEnabledWebChromeClient(View activityNonVideoView, ViewGroup activityVideoView, View loadingView)
{
this.activityNonVideoView = activityNonVideoView;
this.activityVideoView = activityVideoView;
this.loadingView = loadingView;
this.webView = null;
this.isVideoFullscreen = false;
}
/**
* Builds a video enabled WebChromeClient.
* @param activityNonVideoView A View in the activity's layout that contains every other view that should be hidden when the video goes full-screen.
* @param activityVideoView A ViewGroup in the activity's layout that will display the video. Typically you would like this to fill the whole layout.
* @param loadingView A View to be shown while the video is loading (typically only used in API level <11). Must be already inflated and without a parent view.
* @param webView The owner VideoEnabledWebView. Passing it will enable the VideoEnabledWebChromeClient to detect the HTML5 video ended event and exit full-screen.
* Note: The web page must only contain one video tag in order for the HTML5 video ended event to work. This could be improved if needed (see Javascript code).
*/
public VideoEnabledWebChromeClient(View activityNonVideoView, ViewGroup activityVideoView, View loadingView, VideoEnabledWebView webView)
{
this.activityNonVideoView = activityNonVideoView;
this.activityVideoView = activityVideoView;
this.loadingView = loadingView;
this.webView = webView;
this.isVideoFullscreen = false;
}
/**
* Indicates if the video is being displayed using a custom view (typically full-screen)
* @return true it the video is being displayed using a custom view (typically full-screen)
*/
public boolean isVideoFullscreen()
{
return isVideoFullscreen;
}
/**
* Set a callback that will be fired when the video starts or finishes displaying using a custom view (typically full-screen)
* @param callback A VideoEnabledWebChromeClient.ToggledFullscreenCallback callback
*/
public void setOnToggledFullscreen(ToggledFullscreenCallback callback)
{
this.toggledFullscreenCallback = callback;
}
@Override
public void onShowCustomView(View view, CustomViewCallback callback)
{
if (view instanceof FrameLayout)
{
// A video wants to be shown
FrameLayout frameLayout = (FrameLayout) view;
View focusedChild = frameLayout.getFocusedChild();
// Save video related variables
this.isVideoFullscreen = true;
this.videoViewContainer = frameLayout;
this.videoViewCallback = callback;
// Hide the non-video view, add the video view, and show it
activityNonVideoView.setVisibility(View.INVISIBLE);
activityVideoView.addView(videoViewContainer, new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
activityVideoView.setVisibility(View.VISIBLE);
if (focusedChild instanceof android.widget.VideoView)
{
// android.widget.VideoView (typically API level <11)
android.widget.VideoView videoView = (android.widget.VideoView) focusedChild;
// Handle all the required events
videoView.setOnPreparedListener(this);
videoView.setOnCompletionListener(this);
videoView.setOnErrorListener(this);
}
else
{
// Other classes, including:
// - android.webkit.HTML5VideoFullScreen$VideoSurfaceView, which inherits from android.view.SurfaceView (typically API level 11-18)
// - android.webkit.HTML5VideoFullScreen$VideoTextureView, which inherits from android.view.TextureView (typically API level 11-18)
// - com.android.org.chromium.content.browser.ContentVideoView$VideoSurfaceView, which inherits from android.view.SurfaceView (typically API level 19+)
// Handle HTML5 video ended event only if the class is a SurfaceView
// Test case: TextureView of Sony Xperia T API level 16 doesn't work fullscreen when loading the javascript below
if (webView != null && webView.getSettings().getJavaScriptEnabled() && focusedChild instanceof SurfaceView)
{
// Run javascript code that detects the video end and notifies the Javascript interface
String js = "javascript:";
js += "var _ytrp_html5_video_last;";
js += "var _ytrp_html5_video = document.getElementsByTagName('video')[0];";
js += "if (_ytrp_html5_video != undefined && _ytrp_html5_video != _ytrp_html5_video_last) {";
{
js += "_ytrp_html5_video_last = _ytrp_html5_video;";
js += "function _ytrp_html5_video_ended() {";
{
js += "_VideoEnabledWebView.notifyVideoEnd();"; // Must match Javascript interface name and method of VideoEnableWebView
}
js += "}";
js += "_ytrp_html5_video.addEventListener('ended', _ytrp_html5_video_ended);";
}
js += "}";
webView.loadUrl(js);
}
}
// Notify full-screen change
if (toggledFullscreenCallback != null)
{
toggledFullscreenCallback.toggledFullscreen(true);
}
}
}
@Override @SuppressWarnings("deprecation")
public void onShowCustomView(View view, int requestedOrientation, CustomViewCallback callback) // Available in API level 14+, deprecated in API level 18+
{
onShowCustomView(view, callback);
}
@Override
public void onHideCustomView()
{
// This method should be manually called on video end in all cases because it's not always called automatically.
// This method must be manually called on back key press (from this class' onBackPressed() method).
if (isVideoFullscreen)
{
// Hide the video view, remove it, and show the non-video view
activityVideoView.setVisibility(View.INVISIBLE);
activityVideoView.removeView(videoViewContainer);
activityNonVideoView.setVisibility(View.VISIBLE);
// Call back (only in API level <19, because in API level 19+ with chromium webview it crashes)
if (videoViewCallback != null && !videoViewCallback.getClass().getName().contains(".chromium."))
{
videoViewCallback.onCustomViewHidden();
}
// Reset video related variables
isVideoFullscreen = false;
videoViewContainer = null;
videoViewCallback = null;
// Notify full-screen change
if (toggledFullscreenCallback != null)
{
toggledFullscreenCallback.toggledFullscreen(false);
}
}
}
@Override
public View getVideoLoadingProgressView() // Video will start loading
{
if (loadingView != null)
{
loadingView.setVisibility(View.VISIBLE);
return loadingView;
}
else
{
return super.getVideoLoadingProgressView();
}
}
@Override
public void onPrepared(MediaPlayer mp) // Video will start playing, only called in the case of android.widget.VideoView (typically API level <11)
{
if (loadingView != null)
{
loadingView.setVisibility(View.GONE);
}
}
@Override
public void onCompletion(MediaPlayer mp) // Video finished playing, only called in the case of android.widget.VideoView (typically API level <11)
{
onHideCustomView();
}
@Override
public boolean onError(MediaPlayer mp, int what, int extra) // Error while playing video, only called in the case of android.widget.VideoView (typically API level <11)
{
return false; // By returning false, onCompletion() will be called
}
/**
* Notifies the class that the back key has been pressed by the user.
* This must be called from the Activity's onBackPressed(), and if it returns false, the activity itself should handle it. Otherwise don't do anything.
* @return Returns true if the event was handled, and false if was not (video view is not visible)
*/
public boolean onBackPressed()
{
if (isVideoFullscreen)
{
onHideCustomView();
return true;
}
else
{
return false;
}
}
}
import android.annotation.SuppressLint;
import android.content.Context;
import android.os.Handler;
import android.os.Looper;
import android.util.AttributeSet;
import android.webkit.WebChromeClient;
import android.webkit.WebView;
import java.util.Map;
/**
* This class serves as a WebView to be used in conjunction with a VideoEnabledWebChromeClient.
* It makes possible:
* - To detect the HTML5 video ended event so that the VideoEnabledWebChromeClient can exit full-screen.
*
* Important notes:
* - Javascript is enabled by default and must not be disabled with getSettings().setJavaScriptEnabled(false).
* - setWebChromeClient() must be called before any loadData(), loadDataWithBaseURL() or loadUrl() method.
*
* @author Cristian Perez (http://cpr.name)
*
*/
public class VideoEnabledWebView extends WebView
{
public class JavascriptInterface
{
@android.webkit.JavascriptInterface
public void notifyVideoEnd() // Must match Javascript interface method of VideoEnabledWebChromeClient
{
// This code is not executed in the UI thread, so we must force that to happen
new Handler(Looper.getMainLooper()).post(new Runnable()
{
@Override
public void run()
{
if (videoEnabledWebChromeClient != null)
{
videoEnabledWebChromeClient.onHideCustomView();
}
}
});
}
}
private VideoEnabledWebChromeClient videoEnabledWebChromeClient;
private boolean addedJavascriptInterface;
public VideoEnabledWebView(Context context)
{
super(context);
addedJavascriptInterface = false;
}
@SuppressWarnings("unused")
public VideoEnabledWebView(Context context, AttributeSet attrs)
{
super(context, attrs);
addedJavascriptInterface = false;
}
@SuppressWarnings("unused")
public VideoEnabledWebView(Context context, AttributeSet attrs, int defStyle)
{
super(context, attrs, defStyle);
addedJavascriptInterface = false;
}
/**
* Indicates if the video is being displayed using a custom view (typically full-screen)
* @return true it the video is being displayed using a custom view (typically full-screen)
*/
public boolean isVideoFullscreen()
{
return videoEnabledWebChromeClient != null && videoEnabledWebChromeClient.isVideoFullscreen();
}
/**
* Pass only a VideoEnabledWebChromeClient instance.
*/
@Override @SuppressLint("SetJavaScriptEnabled")
public void setWebChromeClient(WebChromeClient client)
{
getSettings().setJavaScriptEnabled(true);
if (client instanceof VideoEnabledWebChromeClient)
{
this.videoEnabledWebChromeClient = (VideoEnabledWebChromeClient) client;
}
super.setWebChromeClient(client);
}
@Override
public void loadData(String data, String mimeType, String encoding)
{
addJavascriptInterface();
super.loadData(data, mimeType, encoding);
}
@Override
public void loadDataWithBaseURL(String baseUrl, String data, String mimeType, String encoding, String historyUrl)
{
addJavascriptInterface();
super.loadDataWithBaseURL(baseUrl, data, mimeType, encoding, historyUrl);
}
@Override
public void loadUrl(String url)
{
addJavascriptInterface();
super.loadUrl(url);
}
@Override
public void loadUrl(String url, Map<String, String> additionalHttpHeaders)
{
addJavascriptInterface();
super.loadUrl(url, additionalHttpHeaders);
}
private void addJavascriptInterface()
{
if (!addedJavascriptInterface)
{
// Add javascript interface to be called when the video ends (must be done before page load)
addJavascriptInterface(new JavascriptInterface(), "_VideoEnabledWebView"); // Must match Javascript interface name of VideoEnabledWebChromeClient
addedJavascriptInterface = true;
}
}
}
Main layout activity_main.xml in which we put a VideoEnabledWebView and other used views:
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity" >
<!-- View that will be hidden when video goes fullscreen -->
<RelativeLayout
android:id="@+id/nonVideoLayout"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<your.package.VideoEnabledWebView
android:id="@+id/webView"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</RelativeLayout>
<!-- View where the video will be shown when video goes fullscreen -->
<RelativeLayout
android:id="@+id/videoLayout"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<!-- View that will be shown while the fullscreen video loads (maybe include a spinner and a "Loading..." message) -->
<View
android:id="@+id/videoLoading"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:visibility="invisible" />
</RelativeLayout>
</RelativeLayout>
Activity's onCreate(), in which we initialize it:
private VideoEnabledWebView webView;
private VideoEnabledWebChromeClient webChromeClient;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
// Set layout
setContentView(R.layout.activity_main);
// Save the web view
webView = (VideoEnabledWebView) findViewById(R.id.webView);
// Initialize the VideoEnabledWebChromeClient and set event handlers
View nonVideoLayout = findViewById(R.id.nonVideoLayout); // Your own view, read class comments
ViewGroup videoLayout = (ViewGroup) findViewById(R.id.videoLayout); // Your own view, read class comments
View loadingView = getLayoutInflater().inflate(R.layout.view_loading_video, null); // Your own view, read class comments
webChromeClient = new VideoEnabledWebChromeClient(nonVideoLayout, videoLayout, loadingView, webView) // See all available constructors...
{
// Subscribe to standard events, such as onProgressChanged()...
@Override
public void onProgressChanged(WebView view, int progress)
{
// Your code...
}
};
webChromeClient.setOnToggledFullscreen(new VideoEnabledWebChromeClient.ToggledFullscreenCallback()
{
@Override
public void toggledFullscreen(boolean fullscreen)
{
// Your code to handle the full-screen change, for example showing and hiding the title bar. Example:
if (fullscreen)
{
WindowManager.LayoutParams attrs = getWindow().getAttributes();
attrs.flags |= WindowManager.LayoutParams.FLAG_FULLSCREEN;
attrs.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON;
getWindow().setAttributes(attrs);
if (android.os.Build.VERSION.SDK_INT >= 14)
{
getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LOW_PROFILE);
}
}
else
{
WindowManager.LayoutParams attrs = getWindow().getAttributes();
attrs.flags &= ~WindowManager.LayoutParams.FLAG_FULLSCREEN;
attrs.flags &= ~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON;
getWindow().setAttributes(attrs);
if (android.os.Build.VERSION.SDK_INT >= 14)
{
getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_VISIBLE);
}
}
}
});
webView.setWebChromeClient(webChromeClient);
// Navigate everywhere you want, this classes have only been tested on YouTube's mobile site
webView.loadUrl("http://m.youtube.com");
}
And don't forget to call onBackPressed():
@Override
public void onBackPressed()
{
// Notify the VideoEnabledWebChromeClient, and handle it ourselves if it doesn't handle it
if (!webChromeClient.onBackPressed())
{
if (webView.canGoBack())
{
webView.goBack();
}
else
{
// Close app (presumably)
super.onBackPressed();
}
}
}
I got the same issue.
I fixed it by removing line-height from my input. Check if there is some lineheight which is causing the problem
UPDATE
Just a quick note, as I can see this looks really stupid, and it has no good use with pure PHP because the array_merge
just works there. BUT try it with the PHP MongoDB driver before you rush to downvote. That dude WILL add indexes for whatever reason, and WILL ruin the merged object. With my naïve little function, the merge comes out exactly the way it was supposed to with a traditional array_merge
.
I know it's an old question but I'd like to add one more case I had recently with MongoDB driver queries and none of array_merge
, array_replace
nor array_push
worked. I had a bit complex structure of objects wrapped as arrays in array:
$a = [
["a" => [1, "a2"]],
["b" => ["b1", 2]]
];
$t = [
["c" => ["c1", "c2"]],
["b" => ["b1", 2]]
];
And I needed to merge them keeping the same structure like this:
$merged = [
["a" => [1, "a2"]],
["b" => ["b1", 2]],
["c" => ["c1", "c2"]],
["b" => ["b1", 2]]
];
The best solution I came up with was this:
public static function glueArrays($arr1, $arr2) {
// merges TWO (2) arrays without adding indexing.
$myArr = $arr1;
foreach ($arr2 as $arrayItem) {
$myArr[] = $arrayItem;
}
return $myArr;
}
Another easy way is to make your theme a child of Theme.AppCompat.Light.NoActionBar
like so:
<style name="NoActionBarTheme" parent="Theme.AppCompat.Light.NoActionBar">
...
</style>
Use --build-arg in lower case environment variable:
docker build --build-arg http_proxy=http://proxy:port/ --build-arg https_proxy=http://proxy:port/ --build-arg ftp_proxy=http://proxy:port --build-arg no_proxy=localhost,127.0.0.1,company.com -q=false .
This code will split it up for you:
list($whole, $decimal) = explode('.', $your_number);
where $whole is the whole number and $decimal will have the digits after the decimal point.
you can disable via css:
pointer-events: none;
Doesn't work everywhere though.
SELECT column_name from table_name
WHERE RTRIM(ISNULL(column_name, '')) LIKE ''
ISNULL(column_name, '')
will return '' if column_name is NULL, otherwise it will return column_name.
UPDATE
In Oracle, you can use NVL
to achieve the same results.
SELECT column_name from table_name
WHERE RTRIM(NVL(column_name, '')) LIKE ''
In C++20 this is possible using the following syntax:
auto lambda = []<typename T>(T t){
// do something
};
The value for your onClick
attribute should be a function, not a function call.
<button type="submit" onClick={function(){removeTaskFunction(todo)}}>Submit</button>
I have used this and it seems to work with outlook, not using html but you can format the text with line breaks at least when the body is added as output.
<a href="mailto:[email protected]?subject=Hello world&body=Line one%0DLine two">Email me</a>
@Override
public void onBackPressed() {
new AlertDialog.Builder(this)
.setMessage("Are you sure you want to exit?")
.setCancelable(false)
.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
ExampleActivity.super.onBackPressed();
}
})
.setNegativeButton("No", null)
.show();
}
Remove your "each" and just use:
$('input[name=ticketID]').attr("disabled",true);
That simple. It works
Apart from all the answers given, I would like to add few points :-
1) __repr__()
is invoked when you simply write object's name on interactive python console and press enter.
2) __str__()
is invoked when you use object with print statement.
3) In case, if __str__
is missing, then print and any function using str()
invokes __repr__()
of object.
4) __str__()
of containers, when invoked will execute __repr__()
method of its contained elements.
5) str()
called within __str__()
could potentially recurse without a base case, and error on maximum recursion depth.
6) __repr__()
can call repr()
which will attempt to avoid infinite recursion automatically, replacing an already represented object with ...
.
You can simply use the below function, You can also change the type element.
$("input[type=hidden]").bind("change", function() {
alert($(this).val());
});
Changes in value to hidden elements don't automatically fire the .change() event. So, wherever it is that you're setting that value, you also have to tell jQuery to trigger it.
HTML
<div id="message"></div>
<input type="hidden" id="testChange" value="0" />
JAVASCRIPT
var $message = $('#message');
var $testChange = $('#testChange');
var i = 1;
function updateChange() {
$message.html($message.html() + '<p>Changed to ' + $testChange.val() + '</p>');
}
$testChange.on('change', updateChange);
setInterval(function() {
$testChange.val(++i).trigger('change');;
console.log("value changed" +$testChange.val());
}, 3000);
updateChange();
should work as expected.
If you are looking to copy all the text files in one folder to merge and copy to another folder, you can do this to achieve that:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
namespace HowToCopyTextFiles
{
class Program
{
static void Main(string[] args)
{
string mydocpath=Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);
StringBuilder sb = new StringBuilder();
foreach (string txtName in Directory.GetFiles(@"D:\Links","*.txt"))
{
using (StreamReader sr = new StreamReader(txtName))
{
sb.AppendLine(txtName.ToString());
sb.AppendLine("= = = = = =");
sb.Append(sr.ReadToEnd());
sb.AppendLine();
sb.AppendLine();
}
}
using (StreamWriter outfile=new StreamWriter(mydocpath + @"\AllTxtFiles.txt"))
{
outfile.Write(sb.ToString());
}
}
}
}
Bundling is all about compressing several JavaScript or stylesheets files without any formatting (also referred as minified) into a single file for saving bandwith and number of requests to load a page.
As example you could create your own bundle:
bundles.Add(New ScriptBundle("~/bundles/mybundle").Include(
"~/Resources/Core/Javascripts/jquery-1.7.1.min.js",
"~/Resources/Core/Javascripts/jquery-ui-1.8.16.min.js",
"~/Resources/Core/Javascripts/jquery.validate.min.js",
"~/Resources/Core/Javascripts/jquery.validate.unobtrusive.min.js",
"~/Resources/Core/Javascripts/jquery.unobtrusive-ajax.min.js",
"~/Resources/Core/Javascripts/jquery-ui-timepicker-addon.js"))
And render it like this:
@Scripts.Render("~/bundles/mybundle")
One more advantage of @Scripts.Render("~/bundles/mybundle")
over the native <script src="~/bundles/mybundle" />
is that @Scripts.Render()
will respect the web.config
debug setting:
<system.web>
<compilation debug="true|false" />
If debug="true"
then it will instead render individual script tags for each source script, without any minification.
For stylesheets you will have to use a StyleBundle and @Styles.Render().
Instead of loading each script or style with a single request (with script or link tags), all files are compressed into a single JavaScript or stylesheet file and loaded together.
Here's a somewhat fragile way of doing it that does not involve private APIs or constructing your own system. You're hedging your bets that Apple doesn't break this and that hopefully they will release an API that you can replace these few lines of code with.
This also requires that you implement the standard table view editing delegate callbacks.
static char kObserveContext = 0;
@implementation KZTableViewCell {
UIScrollView *_contentScrollView;
UIView *_confirmationView;
UIButton *_editButton;
UIButton *_deleteButton;
}
- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier {
self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
if (self) {
_contentScrollView = (id)self.contentView.superview;
[_contentScrollView.layer addObserver:self
forKeyPath:@"sublayers"
options:0
context:&kObserveContext];
_editButton = [UIButton new];
_editButton.backgroundColor = [UIColor lightGrayColor];
[_editButton setTitle:@"Edit" forState:UIControlStateNormal];
[_editButton addTarget:self
action:@selector(_editTap)
forControlEvents:UIControlEventTouchUpInside];
}
return self;
}
-(void)dealloc {
[_contentScrollView.layer removeObserver:self forKeyPath:@"sublayers" context:&kObserveContext];
}
-(void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context {
if(context != &kObserveContext) {
[super observeValueForKeyPath:keyPath ofObject:object change:change context:context];
return;
}
if(object == _contentScrollView.layer) {
for(UIView * view in _contentScrollView.subviews) {
if([NSStringFromClass(view.class) hasSuffix:@"ConfirmationView"]) {
_confirmationView = view;
_deleteButton = [view.subviews objectAtIndex:0];
CGRect frame = _confirmationView.frame;
CGRect frame2 = frame;
frame.origin.x -= frame.size.width;
frame.size.width *= 2;
_confirmationView.frame = frame;
frame2.origin = CGPointZero;
_editButton.frame = frame2;
frame2.origin.x += frame2.size.width;
_deleteButton.frame = frame2;
[_confirmationView addSubview:_editButton];
break;
}
}
return;
}
}
-(void)_editTap {
UITableView *tv = (id)self.superview;
while(tv && ![tv isKindOfClass:[UITableView class]]) {
tv = (id)tv.superview;
}
id<UITableViewDelegate> delegate = tv.delegate;
if([delegate respondsToSelector:@selector(tableView:editTappedForRowWithIndexPath:)]) {
NSIndexPath *ip = [tv indexPathForCell:self];
// define this in your own protocol
[delegate tableView:tv editTappedForRowWithIndexPath:ip];
}
}
@end
This is a case where you mixed up default exports and named exports.
When dealing with the named
exports, if you try to import them you should use curly braces as below,
import { Home } from './layouts/Home'; // if the Home is a named export
In your case the Home was exported as a default one. This is the one that will get imported from the module, when you don’t specify a certain name of a certain piece of code. When you import, and omit the curly braces, it will look for the default export in the module you’re importing from. So your import should be,
import Home from './layouts/Home'; // if the Home is a default export
Some references to look :
This is what I'm using:
private static final String HEX = "0123456789ABCDEF";
public static String encodeURIComponent(String str) {
if (str == null) return null;
byte[] bytes = str.getBytes(StandardCharsets.UTF_8);
StringBuilder builder = new StringBuilder(bytes.length);
for (byte c : bytes) {
if (c >= 'a' ? c <= 'z' || c == '~' :
c >= 'A' ? c <= 'Z' || c == '_' :
c >= '0' ? c <= '9' : c == '-' || c == '.')
builder.append((char)c);
else
builder.append('%')
.append(HEX.charAt(c >> 4 & 0xf))
.append(HEX.charAt(c & 0xf));
}
return builder.toString();
}
It goes beyond Javascript's by percent-encoding every character that is not an unreserved character according to RFC 3986.
This is the oposite conversion:
public static String decodeURIComponent(String str) {
if (str == null) return null;
int length = str.length();
byte[] bytes = new byte[length / 3];
StringBuilder builder = new StringBuilder(length);
for (int i = 0; i < length; ) {
char c = str.charAt(i);
if (c != '%') {
builder.append(c);
i += 1;
} else {
int j = 0;
do {
char h = str.charAt(i + 1);
char l = str.charAt(i + 2);
i += 3;
h -= '0';
if (h >= 10) {
h |= ' ';
h -= 'a' - '0';
if (h >= 6) throw new IllegalArgumentException();
h += 10;
}
l -= '0';
if (l >= 10) {
l |= ' ';
l -= 'a' - '0';
if (l >= 6) throw new IllegalArgumentException();
l += 10;
}
bytes[j++] = (byte)(h << 4 | l);
if (i >= length) break;
c = str.charAt(i);
} while (c == '%');
builder.append(new String(bytes, 0, j, UTF_8));
}
}
return builder.toString();
}
Make sure you have installed SQL Server.
If not, follow this link and download. https://www.microsoft.com/en-us/sql-server/sql-server-downloads
Once SQL server is installed successfully. You will get server name. Refer to the below picture:
I played a bit with Rupy. It's a pretty neat, open source (GPL) Java application and weighs less than 60KB. Give it a try!
Wow... there are so many good solutions here!! Of all the solutions above, I agree with @nortally that using the -eq
one liner is the coolest.
I am running GNU bash, version 4.1.5
(Debian). I have also checked this on ksh (SunSO 5.10).
Here is my version of checking if $1
is an integer or not:
if [ "$1" -eq "$1" ] 2>/dev/null
then
echo "$1 is an integer !!"
else
echo "ERROR: first parameter must be an integer."
echo $USAGE
exit 1
fi
This approach also accounts for negative numbers, which some of the other solutions will have a faulty negative result, and it will allow a prefix of "+" (e.g. +30) which obviously is an integer.
Results:
$ int_check.sh 123
123 is an integer !!
$ int_check.sh 123+
ERROR: first parameter must be an integer.
$ int_check.sh -123
-123 is an integer !!
$ int_check.sh +30
+30 is an integer !!
$ int_check.sh -123c
ERROR: first parameter must be an integer.
$ int_check.sh 123c
ERROR: first parameter must be an integer.
$ int_check.sh c123
ERROR: first parameter must be an integer.
The solution provided by Ignacio Vazquez-Abrams was also very neat (if you like regex) after it was explained. However, it does not handle positive numbers with the +
prefix, but it can easily be fixed as below:
[[ $var =~ ^[-+]?[0-9]+$ ]]
For me it helped to enable the automated discovery in Properties -> C/C++-Build -> Discovery Options to resolve this problem.
Following method is deprecated
sslSocketFactory(SSLSocketFactory sslSocketFactory)
Consider updating it to
sslSocketFactory(SSLSocketFactory sslSocketFactory, X509TrustManager trustManager)
The code is very long so I can't paste all the code.
There could be any number of reasons why your code doesn't work. Maybe you declared the button variables twice so you aren't actually changing enabling/disabling the button like you think you are. Maybe you are blocking the EDT.
You need to create a SSCCE to post on the forum.
So its up to you to isolate the problem. Start with a simple frame thas two buttons and see if your code works. Once you get that working, then try starting a Thread that simply sleeps for 10 seconds to see if it still works.
Learn how the basice work first before writing a 200 line program.
Learn how to do some basic debugging, we are not mind readers. We can't guess what silly mistake you are doing based on your verbal description of the problem.
The problem is how 100% height is being calculated. Two ways to deal with this.
Add 20px to the body padding-bottom
body {
padding-bottom: 20px;
}
or add a transparent border to body
body {
border: 1px solid transparent;
}
Both worked for me in firebug
Below are some comments regarding the correctness of my answer to this question. These kinds of discussions are exactly why stackoverflow is so great. Many different people have different opinions on how best to solve the problem. I've learned some incredible coding style that I would not have thought of myself. And I've been told that readers have learned something from my style from time to time. Social coding has really encouraged me to be a better programmer.
Social coding can, at times, be disturbing. I hate it when I spend 30 minutes flushing out an answer with a jsfiddle and detailed explanation only to submit and find 10 other answers all saying the same thing in less detail. And the author accepts someone else's answer. How frustrating! I think that this has happend to my fellow contributors–in particular thirtydot.
Thirtydot's answer is completely legit. The p
around the script
is the culprit in this problem. Remove it and the space goes away. It also is a good answer to this question.
But why? Shouldn't the p
tag's height, padding and margin be calculated into the height of the body?
And it is! If you remove the padding-bottom style that I've suggested and then set the body's background to black, you will see that the body's height includes this extra p
space accurately (you see the strip at the bottom turn to black). But the gradient fails to include it when finding where to start. This is the real problem.
The two solutions that I've offered are ways to tell the browser to calculate the gradient properly. In fact, the padding-bottom could just be 1px. The value isn't important, but the setting is. It makes the browser take a look at where the body ends. Setting the border will have the same effect.
In my opinion, a padding setting of 20px looks the best for this page and that is why I answered it this way. It is addressing the problem of where the gradient starts.
Now, if I were building this page. I would have avoided wrapping the script in a p tag. But I must assume that author of the page either can't change it or has a good reason for putting it in there. I don't know what that script does. Will it write something that needs a p tag? Again, I would avoid this practice and it is fine to question its presence, but also I accept that there are cases where it must be there.
My hope in writing this "defense" is that the people who marked down this answer might consider that decision. My answer is thought out, purposeful, and relevant. The author thought so. However, in this social environment, I respect that you disagree and have a right to degrade my answer. I just hope that your choice is motivated by disagreement with my answer and not that author chose mine over yours.
git log --oneline | grep PATTERN
You can use an event listener to close the clip after it is played
import java.io.File;
import javax.sound.sampled.*;
public void play(File file)
{
try
{
final Clip clip = (Clip)AudioSystem.getLine(new Line.Info(Clip.class));
clip.addLineListener(new LineListener()
{
@Override
public void update(LineEvent event)
{
if (event.getType() == LineEvent.Type.STOP)
clip.close();
}
});
clip.open(AudioSystem.getAudioInputStream(file));
clip.start();
}
catch (Exception exc)
{
exc.printStackTrace(System.out);
}
}
I would suggest you try this jQuery plugin print element
It can let you just print the element you selected.
I think you can use loc
if you need update two columns to same value:
df1.loc[df1['stream'] == 2, ['feat','another_feat']] = 'aaaa'
print df1
stream feat another_feat
a 1 some_value some_value
b 2 aaaa aaaa
c 2 aaaa aaaa
d 3 some_value some_value
If you need update separate, one option is use:
df1.loc[df1['stream'] == 2, 'feat'] = 10
print df1
stream feat another_feat
a 1 some_value some_value
b 2 10 some_value
c 2 10 some_value
d 3 some_value some_value
Another common option is use numpy.where
:
df1['feat'] = np.where(df1['stream'] == 2, 10,20)
print df1
stream feat another_feat
a 1 20 some_value
b 2 10 some_value
c 2 10 some_value
d 3 20 some_value
EDIT: If you need divide all columns without stream
where condition is True
, use:
print df1
stream feat another_feat
a 1 4 5
b 2 4 5
c 2 2 9
d 3 1 7
#filter columns all without stream
cols = [col for col in df1.columns if col != 'stream']
print cols
['feat', 'another_feat']
df1.loc[df1['stream'] == 2, cols ] = df1 / 2
print df1
stream feat another_feat
a 1 4.0 5.0
b 2 2.0 2.5
c 2 1.0 4.5
d 3 1.0 7.0
If working with multiple conditions is possible use multiple numpy.where
or numpy.select
:
df0 = pd.DataFrame({'Col':[5,0,-6]})
df0['New Col1'] = np.where((df0['Col'] > 0), 'Increasing',
np.where((df0['Col'] < 0), 'Decreasing', 'No Change'))
df0['New Col2'] = np.select([df0['Col'] > 0, df0['Col'] < 0],
['Increasing', 'Decreasing'],
default='No Change')
print (df0)
Col New Col1 New Col2
0 5 Increasing Increasing
1 0 No Change No Change
2 -6 Decreasing Decreasing
See here: https://github.com/twbs/bootstrap/issues/7501
So try:
$('body').css('overflow','hidden');
$('body').css('position','fixed');
V3.0.0. should have fixed this issue. Do you use the latest version? If so post an issue on https://github.com/twbs/bootstrap/
you are going to want to separate your arguments into separate parameter
$msbuild = "C:\WINDOWS\Microsoft.NET\Framework\v3.5\MSBuild.exe"
$arguments = "/v:q /nologo"
start-process $msbuild $arguments
Since the return statement in getName
specifies multiple elements:
def getName(self):
return self.first_name, self.last_name
Python will return a container object that basically contains them.
In this case, returning a comma separated set of elements creates a tuple. Multiple values can only be returned inside containers.
Let's use a simpler function that returns multiple values:
def foo(a, b):
return a, b
You can look at the byte code generated by using dis.dis
, a disassembler for Python bytecode. For comma separated values w/o any brackets, it looks like this:
>>> import dis
>>> def foo(a, b):
... return a,b
>>> dis.dis(foo)
2 0 LOAD_FAST 0 (a)
3 LOAD_FAST 1 (b)
6 BUILD_TUPLE 2
9 RETURN_VALUE
As you can see the values are first loaded on the internal stack with LOAD_FAST
and then a BUILD_TUPLE
(grabbing the previous 2
elements placed on the stack) is generated. Python knows to create a tuple due to the commas being present.
You could alternatively specify another return type, for example a list, by using []
. For this case, a BUILD_LIST
is going to be issued following the same semantics as it's tuple equivalent:
>>> def foo_list(a, b):
... return [a, b]
>>> dis.dis(foo_list)
2 0 LOAD_FAST 0 (a)
3 LOAD_FAST 1 (b)
6 BUILD_LIST 2
9 RETURN_VALUE
The type of object returned really depends on the presence of brackets (for tuples ()
can be omitted if there's at least one comma). []
creates lists and {}
sets. Dictionaries need key:val
pairs.
To summarize, one actual object is returned. If that object is of a container type, it can contain multiple values giving the impression of multiple results returned. The usual method then is to unpack them directly:
>>> first_name, last_name = f.getName()
>>> print (first_name, last_name)
As an aside to all this, your Java ways are leaking into Python :-)
Don't use getters when writing classes in Python, use properties
. Properties are the idiomatic way to manage attributes, for more on these, see a nice answer here.
This version does not rely on hard-coded, fixed values but sizes relative to the font-size
of the div
.
CSS:
.numberCircle {
font: 32px Arial, sans-serif;
width: 2em;
height: 2em;
box-sizing: initial;
background: #fff;
border: 0.1em solid #666;
color: #666;
text-align: center;
border-radius: 50%;
line-height: 2em;
box-sizing: content-box;
}
HTML:
<div class="numberCircle">30</div>
<div class="numberCircle" style="font-size: 60px">1</div>
<div class="numberCircle" style="font-size: 12px">2</div>
Run this as root and you'll be all set:
rm $(grep socket /etc/my.cnf | cut -d= -f2) && service mysqld start
You can find the location of MySQL's socket file by manually poking around in /etc/my.conf
, or just by using
grep socket /etc/my.cnf | cut -d= -f2
It is likely to be /var/lib/mysql/mysql.sock
. Then (as root, of course, or with sudo
prepended) remove that file:
rm /var/lib/mysql/mysql.sock
Then start the MySQL daemon:
service mysqld start
Removing mysqld
will not address the problem at all. The problem is that CentOS & RedHat do not clean up the sock
file after a crash, so you have to do it yourself. Avoiding powering off your system is (of course) also advised, but sometimes you can't avoid it, so this procedure will solve the problem.
The problem I need to solve is to store contracts containing a few fields (address, book, num_of_days, borrower_addr, blk_data), blk_data is a transaction list (block number and transaction address). This question and answer helped me. I would like to share my code as below. Hope this helps.
- Schema definition. See blk_data.
var ContractSchema = new Schema(
{
address: {type: String, required: true, max: 100}, //contract address
// book_id: {type: String, required: true, max: 100}, //book id in the book collection
book: { type: Schema.ObjectId, ref: 'clc_books', required: true }, // Reference to the associated book.
num_of_days: {type: Number, required: true, min: 1},
borrower_addr: {type: String, required: true, max: 100},
// status: {type: String, enum: ['available', 'Created', 'Locked', 'Inactive'], default:'Created'},
blk_data: [{
tx_addr: {type: String, max: 100}, // to do: change to a list
block_number: {type: String, max: 100}, // to do: change to a list
}]
}
);
- Create a record for the collection in the MongoDB. See blk_data.
// Post submit a smart contract proposal to borrowing a specific book.
exports.ctr_contract_propose_post = [
// Validate fields
body('book_id', 'book_id must not be empty.').isLength({ min: 1 }).trim(),
body('req_addr', 'req_addr must not be empty.').isLength({ min: 1 }).trim(),
body('new_contract_addr', 'contract_addr must not be empty.').isLength({ min: 1 }).trim(),
body('tx_addr', 'tx_addr must not be empty.').isLength({ min: 1 }).trim(),
body('block_number', 'block_number must not be empty.').isLength({ min: 1 }).trim(),
body('num_of_days', 'num_of_days must not be empty.').isLength({ min: 1 }).trim(),
// Sanitize fields.
sanitizeBody('*').escape(),
// Process request after validation and sanitization.
(req, res, next) => {
// Extract the validation errors from a request.
const errors = validationResult(req);
if (!errors.isEmpty()) {
// There are errors. Render form again with sanitized values/error messages.
res.status(400).send({ errors: errors.array() });
return;
}
// Create a Book object with escaped/trimmed data and old id.
var book_fields =
{
_id: req.body.book_id, // This is required, or a new ID will be assigned!
cur_contract: req.body.new_contract_addr,
status: 'await_approval'
};
async.parallel({
//call the function get book model
books: function(callback) {
Book.findByIdAndUpdate(req.body.book_id, book_fields, {}).exec(callback);
},
}, function(error, results) {
if (error) {
res.status(400).send({ errors: errors.array() });
return;
}
if (results.books.isNew) {
// res.render('pg_error', {
// title: 'Proposing a smart contract to borrow the book',
// c: errors.array()
// });
res.status(400).send({ errors: errors.array() });
return;
}
var contract = new Contract(
{
address: req.body.new_contract_addr,
book: req.body.book_id,
num_of_days: req.body.num_of_days,
borrower_addr: req.body.req_addr
});
var blk_data = {
tx_addr: req.body.tx_addr,
block_number: req.body.block_number
};
contract.blk_data.push(blk_data);
// Data from form is valid. Save book.
contract.save(function (err) {
if (err) { return next(err); }
// Successful - redirect to new book record.
resObj = {
"res": contract.url
};
res.status(200).send(JSON.stringify(resObj));
// res.redirect();
});
});
},
];
- Update a record. See blk_data.
// Post lender accept borrow proposal.
exports.ctr_contract_propose_accept_post = [
// Validate fields
body('book_id', 'book_id must not be empty.').isLength({ min: 1 }).trim(),
body('contract_id', 'book_id must not be empty.').isLength({ min: 1 }).trim(),
body('tx_addr', 'tx_addr must not be empty.').isLength({ min: 1 }).trim(),
body('block_number', 'block_number must not be empty.').isLength({ min: 1 }).trim(),
// Sanitize fields.
sanitizeBody('*').escape(),
// Process request after validation and sanitization.
(req, res, next) => {
// Extract the validation errors from a request.
const errors = validationResult(req);
if (!errors.isEmpty()) {
// There are errors. Render form again with sanitized values/error messages.
res.status(400).send({ errors: errors.array() });
return;
}
// Create a Book object with escaped/trimmed data
var book_fields =
{
_id: req.body.book_id, // This is required, or a new ID will be assigned!
status: 'on_loan'
};
// Create a contract object with escaped/trimmed data
var contract_fields = {
$push: {
blk_data: {
tx_addr: req.body.tx_addr,
block_number: req.body.block_number
}
}
};
async.parallel({
//call the function get book model
book: function(callback) {
Book.findByIdAndUpdate(req.body.book_id, book_fields, {}).exec(callback);
},
contract: function(callback) {
Contract.findByIdAndUpdate(req.body.contract_id, contract_fields, {}).exec(callback);
},
}, function(error, results) {
if (error) {
res.status(400).send({ errors: errors.array() });
return;
}
if ((results.book.isNew) || (results.contract.isNew)) {
res.status(400).send({ errors: errors.array() });
return;
}
var resObj = {
"res": results.contract.url
};
res.status(200).send(JSON.stringify(resObj));
});
},
];
To bind the data to ComboBox
List<ComboData> ListData = new List<ComboData>();
ListData.Add(new ComboData { Id = "1", Value = "One" });
ListData.Add(new ComboData { Id = "2", Value = "Two" });
ListData.Add(new ComboData { Id = "3", Value = "Three" });
ListData.Add(new ComboData { Id = "4", Value = "Four" });
ListData.Add(new ComboData { Id = "5", Value = "Five" });
cbotest.ItemsSource = ListData;
cbotest.DisplayMemberPath = "Value";
cbotest.SelectedValuePath = "Id";
cbotest.SelectedValue = "2";
ComboData
looks like:
public class ComboData
{
public int Id { get; set; }
public string Value { get; set; }
}
(note that Id
and Value
have to be properties, not class fields)
If you want to start afresh, deleting the settings.json
file from your user's profile will do the trick.
But if you don't want to reset everything, it is still possible through settings menu.
You can search for the setting that you want to revert back using search box.
You will see some settings with the left blue line, it means you've modified that one.
If you take your cursor to that setting, a gear button will appear. You can click this to restore that setting.
You can also use the drop-down below that setting and change it to default.
In Swift3, if you are starting with a color you have already chosen, you can get the RGB value online (http://imagecolorpicker.com) and use those values defined as a UIColor. This solution implements them as a background:
@IBAction func blueBackground(_ sender: Any) {
let blueColor = UIColor(red: CGFloat(160/255), green: CGFloat(183.0/255), blue: CGFloat(227.0/255), alpha: 1)
view.backgroundColor = blueColor
@Vadym mentioned this above in the comments and it is important to define the CGFloat with a single decimal point
The main difference between a session and a cookie is that session data is stored on the server, whereas cookies store data in the visitor’s browser.
Sessions are more secure than cookies as it is stored in server. Cookie can be turned off from browser.
Data stored in cookie can be stored for months or years, depending on the life span of the cookie. But the data in the session is lost when the web browser is closed.
I believe you are not the only one who has problems when trying to deploy Crystal Report for VS 2010. Based on the error message you had, have you checked:
Please make sure you just have one CR version installed on your system. If you do have other CR version installed, consider to uninstall it so that your application is not "confused" about the CR version.
You need to make sure you download the correct CR version. Since you are using VS 2010, you need to refer to CRforVS_redist_install_64bit_13_0_1.zip (for 64 bit machine) or CRforVS_redist_install_32bit_13_0_1.zip (for 32 bit machine). These two are the redistributable packages. You can download full package from the below link as well: CRforVS_13_0_1.exe Note: It is sometimes necessary to install 32bit CR runtime even on 64bit OS
Make sure you setup FULL TRUST permission on your root folder
The LOCAL SERVICE permission must be setup on your application pool
Make sure the aspnet_client folder exists on your root folder.
If you can make sure all the 5 points above, your Crystal Report should work without any fuss.
Another important thing to note down here is that if you host your Crystal Report with a shared host, you need to check it with them of whether they really support Crystal Report. If you still have problems, you can switch to http://www.asphostcentral.com, who provides Crystal Report support.
Good luck!
Put mysql-connector-java-5.1.38-bin.jar to the C:\Program Files\Apache Software Foundation\Tomcat 7.0\lib folder.by doing this program with execute
The cex
parameter will do that for you.
a <- c(3, 2, 2, 2, 1, 2 )
barplot(a, beside = T,
col = 1:6, space = c(0, 2))
legend("topright",
legend = c("a", "b", "c", "d", "e", "f"),
fill = 1:6, ncol = 2,
cex = 0.75)
One solution is you can run your '.bat' file with '.vbs' file and you can run this vbs file in windows scheduler.
Set objShell = WScript.CreateObject("WScript.Shell")
objShell.Run("cron_jobs.bat"), 0, True
You can do like this and i hope it will fix your issue.
Consider this in a normal course of execution (i.e without any Exception being thrown): if method is not 'void' then it always explicitly returns something, yet, finally always gets executed
function CheckImageLoadingState()
{
var counter = 0;
var length = 0;
jQuery('#siteContent img').each(function()
{
if(jQuery(this).attr('src').match(/(gif|png|jpg|jpeg)$/))
length++;
});
jQuery('#siteContent img').each(function()
{
if(jQuery(this).attr('src').match(/(gif|png|jpg|jpeg)$/))
{
jQuery(this).load(function()
{
}).each(function() {
if(this.complete) jQuery(this).load();
});
}
jQuery(this).load(function()
{
counter++;
if(counter === length)
{
//function to call when all the images have been loaded
DisplaySiteContent();
}
});
});
}
function getKeys(obj){
var keys = [];
for (key in obj) {
if (obj.hasOwnProperty(key)) { keys[keys.length] = key; }
}
return keys;
}
The constructor of PetStore
will call a constructor of Farm
; there's
no way you can prevent it. If you do nothing (as you've done), it will
call the default constructor (Farm()
); if you need to pass arguments,
you'll have to specify the base class in the initializer list:
PetStore::PetStore()
: Farm( neededArgument )
, idF( 0 )
{
}
(Similarly, the constructor of PetStore
will call the constructor of
nameF
. The constructor of a class always calls the constructors of
all of its base classes and all of its members.)
The difference is an iframe is able to "float" within content in a page, that is you can create an html page and position an iframe within it. This allows you to have a page and place another document directly in it. A frameset
allows you to split the screen into different pages (horizontally and vertically) and display different documents in each part.
Read IFrames security summary.
Working code from my sources:
HTML WORLD
<select name="select_from" disabled>...</select>
JS WORLD
var from = jQuery('select[name=select_from]');
//add disabled
from.attr('disabled', 'disabled');
//remove it
from.removeAttr("disabled");
All the classes including the abstract classes can have constructors.Abstract class constructors will be called when its concrete subclass will be instantiated
It is as simple as string[:2]
. A function can be easily written to do it, if you need.
Even this, is as simple as
def first2(s):
return s[:2]
Install-Package Microsoft.AspNet.WebApi.Core -version 5.2.3
Then in the project Add Reference -> Browse. Push the browse button and go to the C:\Users\UserName\Documents\Visual Studio 2015\Projects\ProjectName\packages\Microsoft.AspNet.Mvc.5.2.3\lib\net45 and add the needed .dll file
#include <iostream>
using namespace std ;
typedef int (*Type)[3][3] ;
Type Demo_function( Type ); //prototype
int main (){
cout << "\t\t!!!!!Passing and returning 2D array from function!!!!!\n"
int array[3][3] ;
Type recieve , ptr = &array;
recieve = Demo_function( ptr ) ;
for ( int i = 0 ; i < 3 ; i ++ ){
for ( int j = 0 ; j < 3 ; j ++ ){
cout << (*recieve)[i][j] << " " ;
}
cout << endl ;
}
return 0 ;
}
Type Demo_function( Type array ){/*function definition */
cout << "Enter values : \n" ;
for (int i =0 ; i < 3 ; i ++)
for ( int j = 0 ; j < 3 ; j ++ )
cin >> (*array)[i][j] ;
return array ;
}
Normaly you can GET and POST parameters in a servlet the same way:
request.getParameter("cmd");
But only if the POST data is encoded as key-value pairs of content type: "application/x-www-form-urlencoded" like when you use a standard HTML form.
If you use a different encoding schema for your post data, as in your case when you post a json data stream, you need to use a custom decoder that can process the raw datastream from:
BufferedReader reader = request.getReader();
Json post processing example (uses org.json package )
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
StringBuffer jb = new StringBuffer();
String line = null;
try {
BufferedReader reader = request.getReader();
while ((line = reader.readLine()) != null)
jb.append(line);
} catch (Exception e) { /*report an error*/ }
try {
JSONObject jsonObject = HTTP.toJSONObject(jb.toString());
} catch (JSONException e) {
// crash and burn
throw new IOException("Error parsing JSON request string");
}
// Work with the data using methods like...
// int someInt = jsonObject.getInt("intParamName");
// String someString = jsonObject.getString("stringParamName");
// JSONObject nestedObj = jsonObject.getJSONObject("nestedObjName");
// JSONArray arr = jsonObject.getJSONArray("arrayParamName");
// etc...
}
$query = "SELECT username, userid FROM user WHERE username = 'admin' ";
$result = $conn->query($query);
if (!$result) {
echo 'Could not run query: ' . mysql_error();
exit;
}
$arrayResult = mysql_fetch_array($result);
//Now you can access $arrayResult like this
$arrayResult['userid']; // output will be userid which will be in database
$arrayResult['username']; // output will be admin
//Note- userid and username will be column name of user table.
this works:
if (WindowState == FormWindowState.Minimized)
WindowState = FormWindowState.Normal;
else
{
TopMost = true;
Focus();
BringToFront();
TopMost = false;
}
No, how you are doing it is correct.
http://www.w3.org/MarkUp/html-spec/html-spec_8.html#SEC8.2.2
Only the shortcut syntax worked for me *ngIf.
(I think it's the later versions that use this syntax if I'm not mistaken)
<div *ngIf="haystack.indexOf('needle') > -1">
</div>
or
<div *ngIf="haystack.includes('needle')">
</div>
An easy way to do this is to user "select
" and realize you can get a list of all columns
for the dataframe
, df
, with df.columns
drop_list = ['a column', 'another column', ...]
df.select([column for column in df.columns if column not in drop_list])
Or you can do
docker run -v /var/volume1 -v /var/volume2 DATA busybox true
go to the modal-dialog
div and add
style="width:70%"
depending on the size you want
On Linux, you can use ldconfig
, which maintains the ld.so configuration and cache, to print out the directories search by ld.so
with
ldconfig -v 2>/dev/null | grep -v ^$'\t'
ldconfig -v
prints out the directories search by the linker (without a leading tab) and the shared libraries found in those directories (with a leading tab); the grep
gets the directories. On my machine, this line prints out
/usr/lib64/atlas:
/usr/lib/llvm:
/usr/lib64/llvm:
/usr/lib64/mysql:
/usr/lib64/nvidia:
/usr/lib64/tracker-0.12:
/usr/lib/wine:
/usr/lib64/wine:
/usr/lib64/xulrunner-2:
/lib:
/lib64:
/usr/lib:
/usr/lib64:
/usr/lib64/nvidia/tls: (hwcap: 0x8000000000000000)
/lib/i686: (hwcap: 0x0008000000000000)
/lib64/tls: (hwcap: 0x8000000000000000)
/usr/lib/sse2: (hwcap: 0x0000000004000000)
/usr/lib64/tls: (hwcap: 0x8000000000000000)
/usr/lib64/sse2: (hwcap: 0x0000000004000000)
The first paths, without hwcap
in the line, are either built-in or read from /etc/ld.so.conf.
The linker can then search additional directories under the basic library search path, with names like sse2
corresponding to additional CPU capabilities.
These paths, with hwcap
in the line, can contain additional libraries tailored for these CPU capabilities.
One final note: using -p
instead of -v
above searches the ld.so
cache instead.
If you have installed Apache with OpenSSL navigate to bin directory. In my case D:\apache\bin.
*These commands also work if you have stand alone installation of openssl.
Run these commands:
openssl req -config d:\apache\conf\openssl.cnf -new -out d:\apache\conf\server.csr -keyout d:\apache\conf\server.pem
openssl rsa -in d:\apache\conf\server.pem -out d:\apache\conf\server.key
openssl x509 -in d:\apache\conf\server.csr -out d:\apache\conf\server.crt -req -signkey d:\apache\conf\server.key -days 365
*This will create self-signed certificate that you can use for development purposes
Again if you have Apache installed in the httpd.conf stick these:
<IfModule ssl_module>
SSLEngine on
SSLCertificateFile "D:/apache/conf/server.crt"
SSLCertificateKeyFile "D:/apache/conf/server.key"
</IfModule>
Its very simple actually. Try this:
str1="a b c d"
splitStr1 = str1.split()
print splitStr1
To capture the message in background you need to use a BroadcastReceiver
import android.content.Context
import android.content.Intent
import android.util.Log
import androidx.legacy.content.WakefulBroadcastReceiver
import com.google.firebase.messaging.RemoteMessage
class FirebaseBroadcastReceiver : WakefulBroadcastReceiver() {
val TAG: String = FirebaseBroadcastReceiver::class.java.simpleName
override fun onReceive(context: Context, intent: Intent) {
val dataBundle = intent.extras
if (dataBundle != null)
for (key in dataBundle.keySet()) {
Log.d(TAG, "dataBundle: " + key + " : " + dataBundle.get(key))
}
val remoteMessage = RemoteMessage(dataBundle)
}
}
and add this to your manifest:
<receiver
android:name="MY_PACKAGE_NAME.FirebaseBroadcastReceiver"
android:exported="true"
android:permission="com.google.android.c2dm.permission.SEND">
<intent-filter>
<action android:name="com.google.android.c2dm.intent.RECEIVE" />
</intent-filter>
</receiver>
Allowing the user to click through a div
to the underlying element depends on the browser. All modern browsers, including Firefox, Chrome, Safari, and Opera, understand pointer-events:none
.
For IE, it depends on the background. If the background is transparent, clickthrough works without you needing to do anything. On the other hand, for something like background:white; opacity:0; filter:Alpha(opacity=0);
, IE needs manual event forwarding.
See a JSFiddle test and CanIUse pointer events.
This is clearly a classpath problem. Take into consideration that the classpath must change a bit when you run your program outside the IDE. This is because the IDE loads the other JARs relative to the root folder of your project, while in the case of the final JAR this is usually not true.
What I like to do in these situations is build the JAR manually. It takes me at most 5 minutes and it always solves the problem. I do not suggest you do this. Find a way to use Maven, that's its purpose.
This can also be done using a wrapper. Very general way of keeping time.
The wrapper in this example code wraps any function and prints the amount of time needed to execute the function:
def timethis(f):
import time
def wrapped(*args, **kwargs):
start = time.time()
r = f(*args, **kwargs)
print "Executing {0} took {1} seconds".format(f.func_name, time.time()-start)
return r
return wrapped
@timethis
def thistakestime():
for x in range(10000000):
pass
thistakestime()
While I agree with CMS about doing this in an unobtrusive manner (via a lib like jquery or dojo), here's what also work:
<script type="text/javascript">
function parse(a, b, c) {
alert(c);
}
</script>
<a href="#x" onclick="parse('#', false, 'xyc"foo');return false;">Test</a>
The reason it barfs is not because of JavaScript, it's because of the HTML parser. It has no concept of escaped quotes to it trundles along looking for the end quote and finds it and returns that as the onclick function. This is invalid javascript though so you don't find about the error until JavaScript tries to execute the function..
This related question's answer provided the solution for me... it was just a dumb mistake:
Remember to commit first!
https://stackoverflow.com/a/7572252
If you have not yet committed to your local repo, there is nothing to push, but the Git error message you get back doesn't help you too much.
If you want something more efficient in runtime condition, you can have a map that contains every possible choice of the enum by their value. But it'll be juste slower at initialisation of the JVM.
import java.util.HashMap;
import java.util.Map;
/**
* Example of enum with a getter that need a value in parameter, and that return the Choice/Instance
* of the enum which has the same value.
* The value of each choice can be random.
*/
public enum MyEnum {
/** a random choice */
Choice1(4),
/** a nother one */
Choice2(2),
/** another one again */
Choice3(9);
/** a map that contains every choices of the enum ordered by their value. */
private static final Map<Integer, MyEnum> MY_MAP = new HashMap<Integer, MyEnum>();
static {
// populating the map
for (MyEnum myEnum : values()) {
MY_MAP.put(myEnum.getValue(), myEnum);
}
}
/** the value of the choice */
private int value;
/**
* constructor
* @param value the value
*/
private MyEnum(int value) {
this.value = value;
}
/**
* getter of the value
* @return int
*/
public int getValue() {
return value;
}
/**
* Return one of the choice of the enum by its value.
* May return null if there is no choice for this value.
* @param value value
* @return MyEnum
*/
public static MyEnum getByValue(int value) {
return MY_MAP.get(value);
}
/**
* {@inheritDoc}
* @see java.lang.Enum#toString()
*/
public String toString() {
return name() + "=" + value;
}
/**
* Exemple of how to use this class.
* @param args args
*/
public static void main(String[] args) {
MyEnum enum1 = MyEnum.Choice1;
System.out.println("enum1==>" + String.valueOf(enum1));
MyEnum enum2GotByValue = MyEnum.getByValue(enum1.getValue());
System.out.println("enum2GotByValue==>" + String.valueOf(enum2GotByValue));
MyEnum enum3Unknown = MyEnum.getByValue(4);
System.out.println("enum3Unknown==>" + String.valueOf(enum3Unknown));
}
}
Or, wait for JSR-354. Java Money and Currency API coming soon!
Further to aduchis answer above - if you then need to filter based on those group by keys, you can define a class to wrap the many keys.
return customers.GroupBy(a => new CustomerGroupingKey(a.Country, a.Gender))
.Where(a => a.Key.Country == "Ireland" && a.Key.Gender == "M")
.SelectMany(a => a)
.ToList();
Where CustomerGroupingKey takes the group keys:
private class CustomerGroupingKey
{
public CustomerGroupingKey(string country, string gender)
{
Country = country;
Gender = gender;
}
public string Country { get; }
public string Gender { get; }
}
if you can upload a JSP file you may print out some info like in this example: bestdesigns.co.in/blog/check-jsp-tomcat-version
Save this code into a file called tomcat_version.jsp:
Tomcat Version : <%= application.getServerInfo() %><br>
Servlet Specification Version :
<%= application.getMajorVersion() %>.<%= application.getMinorVersion() %> <br>
JSP version :
<%=JspFactory.getDefaultFactory().getEngineInfo().getSpecificationVersion() %><br>
When you access, http://example.com/tomcat_version.jsp, the output should look similar to:
Tomcat Version : Apache Tomcat/5.5.25
Servlet Specification Version : 2.4
JSP version: 2.0
Your java version is 1.5 (you have jdk 1.5). The jar requires java version 1.7 (you should have jdk 1.7). You should download and install the 1.7 jdk from this website:
http://www.oracle.com/technetwork/java/javase/downloads/java-se-jdk-7-download-432154.html
After SqlCommand cmd=new SqlCommand ("insert into time(project,iteration)values('....
Add
cmd.Connection = conn;
Hope this help
In my case I needed to import using an extended file path
i.e:
WRONG: import MyComponent from "componentFolder/myComponent";
RIGHT: import MyComponent from "../myAppFolder/componentFolder/myComponent";
Both of these showed no Typescript errors, but only the bottom one worked.
If you can stand to use sed
(possibly execute from within your program, it'd be as simple as:
sed 's/(.*)//g'
No, <!-- ... -->
is the only comment syntax in HTML.
You may try to write app
in use
uppercase, so App
. Worked for me.
2017 Update I guess. textarea worked fine for me using Spring, Bootstrap and a bunch of other things. Got the SOAP payload stored in a DB, read by Spring and push via Spring-MVC. xmp didn't work at all.
NSDictionary -> NSData:
NSMutableData *data = [[NSMutableData alloc] init];
NSKeyedArchiver *archiver = [[NSKeyedArchiver alloc] initForWritingWithMutableData:data];
[archiver encodeObject:yourDictionary forKey:@"Some Key Value"];
[archiver finishEncoding];
[archiver release];
// Here, data holds the serialized version of your dictionary
// do what you need to do with it before you:
[data release];
NSData -> NSDictionary
NSData *data = [[NSMutableData alloc] initWithContentsOfFile:[self dataFilePath]];
NSKeyedUnarchiver *unarchiver = [[NSKeyedUnarchiver alloc] initForReadingWithData:data];
NSDictionary *myDictionary = [[unarchiver decodeObjectForKey:@"Some Key Value"] retain];
[unarchiver finishDecoding];
[unarchiver release];
[data release];
You can do that with any class that conforms to NSCoding.
1.You can make overload functions.
SomeF(strin s){}
SomeF(string s, string s2){}
SomeF(string s1, string s2, string s3){}
More info: http://csharpindepth.com/Articles/General/Overloading.aspx
2.or you may create one function with params
SomeF( params string[] paramArray){}
SomeF("aa","bb", "cc", "dd", "ff"); // pass as many as you like
More info: https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/keywords/params
3.or you can use simple array
Main(string[] args){}
Max has the best solution for when you always want to start both projects, but you can also right click a project and choose menu Debug ? Start New Instance.
This is an option when you only occasionally need to start the second project or when you need to delay the start of the second project (maybe the server needs to get up and running before the client tries to connect, or something).
It works fine : http://codepad.org/5KgO0b1G,
your aSourceDictionary
variable may have other datatype than dict
aSourceDictionary = { 'abc' : [1,2,3] , 'ccd' : [4,5] }
aTargetDictionary = {}
for aKey in aSourceDictionary:
aTargetDictionary[aKey] = []
aTargetDictionary[aKey].extend(aSourceDictionary[aKey])
print aTargetDictionary
use this, it realy works:
data.addColumn no of your key, you can add more columns or remove
<?php
$con=mysql_connect("localhost","USername","Password") or die("Failed to connect with database!!!!");
mysql_select_db("Database Name", $con);
// The Chart table contain two fields: Weekly_task and percentage
//this example will display a pie chart.if u need other charts such as Bar chart, u will need to change little bit to make work with bar chart and others charts
$sth = mysql_query("SELECT * FROM chart");
while($r = mysql_fetch_assoc($sth)) {
$arr2=array_keys($r);
$arr1=array_values($r);
}
for($i=0;$i<count($arr1);$i++)
{
$chart_array[$i]=array((string)$arr2[$i],intval($arr1[$i]));
}
echo "<pre>";
$data=json_encode($chart_array);
?>
<html>
<head>
<!--Load the AJAX API-->
<script type="text/javascript" src="https://www.google.com/jsapi"></script>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script>
<script type="text/javascript">
// Load the Visualization API and the piechart package.
google.load('visualization', '1', {'packages':['corechart']});
// Set a callback to run when the Google Visualization API is loaded.
google.setOnLoadCallback(drawChart);
function drawChart() {
// Create our data table out of JSON data loaded from server.
var data = new google.visualization.DataTable();
data.addColumn("string", "YEAR");
data.addColumn("number", "NO of record");
data.addRows(<?php $data ?>);
]);
var options = {
title: 'My Weekly Plan',
is3D: 'true',
width: 800,
height: 600
};
// Instantiate and draw our chart, passing in some options.
//do not forget to check ur div ID
var chart = new google.visualization.PieChart(document.getElementById('chart_div'));
chart.draw(data, options);
}
</script>
</head>
<body>
<!--Div that will hold the pie chart-->
<div id="chart_div"></div>
</body>
</html>
run following command to run container
docker run --name db_name -e MYSQL_ROOT_PASSWORD=PASS--publish 8306:3306 db_name
run this command to get mysql db in host machine
mysql -h 127.0.0.1 -P 8306 -uroot -pPASS
in your case it is
mysql -h 127.0.0.1 -P 12345 -uroot -pPASS
Because there are two print statements. First is inside function and second is outside function. When function not return any thing that time it return None value.
Use return
statement at end of function to return value.
e.g.:
Return None value.
>>> def test1():
... print "In function."
...
>>> a = test1()
In function.
>>> print a
None
>>>
>>> print test1()
In function.
None
>>>
>>> test1()
In function.
>>>
Use return statement
>>> def test():
... return "ACV"
...
>>> print test()
ACV
>>>
>>> a = test()
>>> print a
ACV
>>>
var mode = [];
$("input[name='mode[]']:checked").each(function(i) {
mode.push($(this).val());
})
if(mode.length == 0)
{
alert('Please select mode!')
};
you can use this site to generate a proxy for you. it generates a class and can parse and validate your input JSON object.
To know the actual date format, insert a record by using sysdate. That way you can find the actual date format. for example
insert into emp values(7936, 'Mac', 'clerk', 7782, sysdate, 1300, 300, 10);
now, select the inserted record.
select ename, hiredate from emp where ename='Mac';
the result is
ENAME HIREDATE
Mac 06-JAN-13
voila, now your actual date format is found.
PostgreSQL automatically creates indexes on primary keys and unique constraints, but not on the referencing side of foreign key relationships.
When Pg creates an implicit index it will emit a NOTICE
-level message that you can see in psql
and/or the system logs, so you can see when it happens. Automatically created indexes are visible in \d
output for a table, too.
The documentation on unique indexes says:
PostgreSQL automatically creates an index for each unique constraint and primary key constraint to enforce uniqueness. Thus, it is not necessary to create an index explicitly for primary key columns.
and the documentation on constraints says:
Since a DELETE of a row from the referenced table or an UPDATE of a referenced column will require a scan of the referencing table for rows matching the old value, it is often a good idea to index the referencing columns. Because this is not always needed, and there are many choices available on how to index, declaration of a foreign key constraint does not automatically create an index on the referencing columns.
Therefore you have to create indexes on foreign-keys yourself if you want them.
Note that if you use primary-foreign-keys, like 2 FK's as a PK in a M-to-N table, you will have an index on the PK and probably don't need to create any extra indexes.
While it's usually a good idea to create an index on (or including) your referencing-side foreign key columns, it isn't required. Each index you add slows DML operations down slightly, so you pay a performance cost on every INSERT
, UPDATE
or DELETE
. If the index is rarely used it may not be worth having.
int not_in_delimiter(char c, char *delim){
while(*delim != '\0'){
if(c == *delim) return 0;
delim++;
}
return 1;
}
char *token_separater(char *source, char *delimiter, char **last){
char *begin, *next_token;
char *sbegin;
/*Get the start of the token */
if(source)
begin = source;
else
begin = *last;
sbegin = begin;
/*Scan through the string till we find character in delimiter. */
while(*begin != '\0' && not_in_delimiter(*begin, delimiter)){
begin++;
}
/* Check if we have reached at of the string */
if(*begin == '\0') {
/* We dont need to come further, hence return NULL*/
*last = NULL;
return sbegin;
}
/* Scan the string till we find a character which is not in delimiter */
next_token = begin;
while(next_token != '\0' && !not_in_delimiter(*next_token, delimiter)) {
next_token++;
}
/* If we have not reached at the end of the string */
if(*next_token != '\0'){
*last = next_token--;
*next_token = '\0';
return sbegin;
}
}
void main(){
char string[10] = "abcb_dccc";
char delim[10] = "_";
char *token = NULL;
char *last = "" ;
token = token_separater(string, delim, &last);
printf("%s\n", token);
while(last){
token = token_separater(NULL, delim, &last);
printf("%s\n", token);
}
}
You can read detail analysis at blog mentioned in my profile :)
One working example for me.
Controller:
public function tableView()
{
$sites = Site::all();
return view('main.table', compact('sites'));
}
View:
<script>
var sites = {!! json_encode($sites->toArray()) !!};
</script>
To prevent malicious / unintended behaviour, you can use JSON_HEX_TAG
as suggested by Jon in the comment that links to this SO answer
<script>
var sites = {!! json_encode($sites->toArray(), JSON_HEX_TAG) !!};
</script>
EXEC sys.sp_configure N'max server memory (MB)', N'2147483646'
GO
RECONFIGURE WITH OVERRIDE
GO
What value you specify for the server memory is not important, as long as it differs from the current one.
Btw, the thing that causes the speedup is not the query cache, but the data cache.
Not a one liner but very simple:
buffer = ""
some_str = "aas30dsa20"
for char in some_str:
if not char.isdigit():
buffer += char
print( buffer )
I guess you're talking about C#. If so, you can try this
ArrayList CompareArrayList(ArrayList a, ArrayList b)
{
ArrayList output = new ArrayList();
for (int i = 0; i < a.Count; i++)
{
string str = (string)a[i];
if (!b.Contains(str))
{
if(!output.Contains(str)) // check for dupes
output.Add(str);
}
}
return output;
}
I think I made a faster byte array to string convertor:
public static class HexTable
{
private static readonly string[] table = BitConverter.ToString(Enumerable.Range(0, 256).Select(x => (byte)x).ToArray()).Split('-');
public static string ToHexTable(byte[] value)
{
StringBuilder sb = new StringBuilder(2 * value.Length);
for (int i = 0; i < value.Length; i++)
sb.Append(table[value[i]]);
return sb.ToString();
}
And the test set up:
static void Main(string[] args)
{
const int TEST_COUNT = 10000;
const int BUFFER_LENGTH = 100000;
Random random = new Random();
Stopwatch sw = new Stopwatch();
Stopwatch sw2 = new Stopwatch();
byte[] buffer = new byte[BUFFER_LENGTH];
random.NextBytes(buffer);
sw.Start();
for (int j = 0; j < TEST_COUNT; j++)
HexTable.ToHexTable(buffer);
sw.Stop();
sw2.Start();
for (int j = 0; j < TEST_COUNT; j++)
ToHexChar.ToHex(buffer);
sw2.Stop();
Console.WriteLine("Hex Table Elapsed Milliseconds: {0}", sw.ElapsedMilliseconds);
Console.WriteLine("ToHex Elapsed Milliseconds: {0}", sw2.ElapsedMilliseconds);
}
The ToHexChar.ToHEx() method is the ToHex() method shown previously.
Results are as follows:
HexTable = 11808 ms ToHEx = 12168ms
It may not look that much of a difference, but it's still faster :)
Combination of Mritunjay and Bartu's answers are full answer to this question. I copying the full example.
<input class="form-control" type="email" required="" placeholder="username"
oninvalid="this.setCustomValidity('Please Enter valid email')"
oninput="setCustomValidity('')"></input>
Here,
this.setCustomValidity('Please Enter valid email')" - Display the custom message on invalidated of the field
oninput="setCustomValidity('')" - Remove the invalidate message on validated filed.
On Ubuntu with Apache2 and the deflate module already installed (which it is by default), you can enable deflate gzip compression in two easy steps:
a2enmod deflate
/etc/init.d/apache2 force-reload
And you're away! I found pages I served over my adsl connection loaded much faster.
Edit: As per @GertvandenBerg's comment, this enables gzip compression, not deflate.
Mechanize is a great package for "acting like a browser", if you want to handle cookie state, etc.
I simply added security.ignored=/**
in the application.properties
,and that did the charm.
When this is in a python console if you update a module to be able to use it through the console does not help reset, you must use a
import importlib
and
importlib.reload (*module*)
likely to solve your problem
You can try to set
<property name="hibernate.enable_lazy_load_no_trans">true</property>
in hibernate.cfg.xml or persistence.xml
The problem to keep in mind with this property are well explained here
You are comparing strings. If an arguments are omitted, %1
expands to a blank so the commands become IF =="-b" GOTO SPECIFIC
for example (which is a syntax error). Wrap your strings in quotes (or square brackets).
REM this is ok
IF [%1]==[/?] GOTO BLANK
REM I'd recommend using quotes exclusively
IF "%1"=="-b" GOTO SPECIFIC
IF NOT "%1"=="-b" GOTO UNKNOWN
Get yesterday date in javascript
You have to run code and check it output
var today = new Date();_x000D_
var yesterday = new Date(today);_x000D_
_x000D_
yesterday.setDate(today.getDate() - 1);_x000D_
console.log("Original Date : ",yesterday);_x000D_
_x000D_
const monthNames = [_x000D_
"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"_x000D_
];_x000D_
var month = today.getMonth() + 1_x000D_
yesterday = yesterday.getDate() + ' ' + monthNames[month] + ' ' + yesterday.getFullYear()_x000D_
_x000D_
console.log("Modify Date : ",yesterday);
_x000D_
I know that this has an accepted answer, but it is the top article I found when searching for this question, and it is very out of date now. I did a little more research, and this MSDN article contains a list of syntax elements that implicitly continue the statement on the next line of code for VB.Net 2010.
You can do it programmatically:
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdlib.h>
int main() {
int fd = creat("/tmp/foo.txt", 0644);
ftruncate(fd, SIZE_IN_BYTES);
close(fd);
return 0;
}
This approach is especially useful to subsequently mmap the file into memory.
use the following command to check that the file has the correct size:
# du -B1 --apparent-size /tmp/foo.txt
Be careful:
# du /tmp/foo.txt
will probably print 0 because it is allocated as Sparse file if supported by your filesystem.
see also: man 2 open and man 2 truncate
import tkinter as tk
from tkinter import ttk
from PIL import Image, ImageTk
win = tk. Tk()
image1 = Image. open("Aoran. jpg")
image2 = ImageTk. PhotoImage(image1)
image_label = ttk. Label(win , image =.image2)
image_label.place(x = 0 , y = 0)
win.mainloop()
foreach($array as $value=>$name)
{
if($value == $_GET['sel'])
{
echo "<option selected='selected' value='".$value."'>".$name."</option>";
}
else
{
echo "<option value='".$value."'>".$name."</option>";
}
}
Today I had this problem in a project and I had to change this parameter to false (or remove the lines, by default is disabled):
ini_set( 'session.cookie_secure', 1 );
This happened because the actual project works over http and not https only. Found more info in the docs http://php.net/manual/en/session.security.ini.php
This may not be ideal but you can allways do it with javascript. Or in my case jQuery
<script>
var newheight = $('.innerdiv').css('height');
$('.mainwrapper').css('height', newheight);
</script>
anchor
,span
... tags are inline elements by default, In case of inline elements width
property doesn't works. So you have to convert your element to either inline-block
or block level
elements
As the bError = false
statement is never reached in the try block
, and the statement is struck to the input taken, it keeps printing the error in infinite loop.
Try using it this way by using hasNextInt()
catch (Exception e) {
System.out.println("Error!");
input.hasNextInt();
}
Or try using nextLine()
coupled with Integer.parseInt()
for taking input....
Scanner scan = new Scanner(System.in);
int num1 = Integer.parseInt(scan.nextLine());
int num2 = Integer.parseInt(scan.nextLine());
You do cls.isFilled = True
. That overwrites the method called isFilled
and replaces it with the value True. That method is now gone and you can't call it anymore. So when you try to call it again you get an error, since it's not there anymore.
The solution is use a different name for the variable than you do for the method.
The following might work well enough:
aptitude versions ^hylafax+
See more in aptitude(8)
To get the maximum value of a column across a set of rows:
SELECT MAX(column1) FROM table; -- expect one result
To get the maximum value of a set of columns, literals, or variables for each row:
SELECT GREATEST(column1, 1, 0, @val) FROM table; -- expect many results
Andrew's answer is good.
And just to help you out a bit more, here's how you use multiple formatting in one string
"Hello %s, my name is %s" % ('john', 'mike') # Hello john, my name is mike".
If you are using ints instead of string, use %d instead of %s.
"My name is %s and i'm %d" % ('john', 12) #My name is john and i'm 12
You don't import scripts in Python you import modules. Some python modules are also scripts that you can run directly (they do some useful work at a module-level).
In general it is preferable to use absolute imports rather than relative imports.
toplevel_package/
+-- __init__.py
+-- moduleA.py
+-- subpackage
+-- __init__.py
+-- moduleB.py
In moduleB
:
from toplevel_package import moduleA
If you'd like to run moduleB.py
as a script then make sure that parent directory for toplevel_package
is in your sys.path
.
This would do the job:
number=int(raw_input("Enter a number to see if its prime:"))
if number <= 1:
print "number is not prime"
else:
a=2
check = True
while a != number:
if number%a == 0:
print "Number is not prime"
check = False
break
a+=1
if check == True:
print "Number is prime"
Three ways you can do this - from the form designer, select the form, and where you normally see the list of properties, just above it there should be a little lightning symbol - this shows you all the events of the form. Find the form load event in the list, and you should be able to pick ProgramViwer_Load
from the dropdown.
A second way to do it is programmatically - somewhere (constructor maybe) you'd need to add it, something like: ProgramViwer.Load += new EventHandler(ProgramViwer_Load);
A third way using the designer (probably the quickest) - when you create a new form, double click on the middle of it on it in design mode. It'll create a Form load event for you, hook it in, and take you to the event handler code. Then you can just add your two lines and you're good to go!
For me creating a python file named template_filters.py
in my App with below content did the job
# coding=utf-8
from django.template.base import Library
register = Library()
@register.filter
def get_item(dictionary, key):
return dictionary.get(key)
usage is like what culebrón said :
{{ mydict|get_item:item.NAME }}
The answer by @akrun certainly does the trick. For future googlers who want to understand why, here is an explanation...
The new variable needs to be created first.
The variable "valueBin" needs to be already in the df in order for the conditional assignment to work. Essentially, the syntax of the code is correct. Just add one line in front of the code chuck to create this name --
df$newVariableName <- NA
Then you continue with whatever conditional assignment rules you have, like
df$newVariableName[which(df$oldVariableName<=250)] <- "<=250"
I blame whoever wrote that package's error message... The debugging was made especially confusing by that error message. It is irrelevant information that you have two arrays in the df with different lengths. No. Simply create the new column first. For more details, consult this post https://www.r-bloggers.com/translating-weird-r-errors/
In my case... with MySQL:
SELECT ... GROUP BY TIMESTAMPADD(HOUR, HOUR(columName), DATE(columName))
Two steps:
set up user with wildcard:
create user 'root'@'%' identified by 'some_characters';
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%'
IDENTIFIED BY PASSWORD 'some_characters'
WITH GRANT OPTION
vim /etc/my.cnf
add the following:
bind-address=0.0.0.0
restart server, you should not have any problem connecting to it.
Use Return to break the loop.
angular.forEach([0,1,2], function(count){
if(count == 1) {
return;
}
});
An easy option is to configure matplotlib to automatically adjust the plot size. It works perfectly for me and I'm not sure why it's not activated by default.
Method 1
Set this in your matplotlibrc file
figure.autolayout : True
See here for more information on customizing the matplotlibrc file: http://matplotlib.org/users/customizing.html
Method 2
Update the rcParams during runtime like this
from matplotlib import rcParams
rcParams.update({'figure.autolayout': True})
The advantage of using this approach is that your code will produce the same graphs on differently-configured machines.
2 methods,
help()
inspect
1) inspect:
use inpsect module to explore code you want... NOTE: you can able to explore code only for modules (aka) packages you have imported
for eg:
>>> import randint
>>> from inspect import getsource
>>> getsource(randint) # here i am going to explore code for package called `randint`
2) help():
you can simply use help()
command to get help about builtin functions as well its code.
for eg:
if you want to see the code for str() , simply type - help(str)
it will return like this,
>>> help(str)
Help on class str in module __builtin__:
class str(basestring)
| str(object='') -> string
|
| Return a nice string representation of the object.
| If the argument is a string, the return value is the same object.
|
| Method resolution order:
| str
| basestring
| object
|
| Methods defined here:
|
| __add__(...)
| x.__add__(y) <==> x+y
|
| __contains__(...)
| x.__contains__(y) <==> y in x
|
| __eq__(...)
| x.__eq__(y) <==> x==y
|
| __format__(...)
| S.__format__(format_spec) -> string
|
| Return a formatted version of S as described by format_spec.
|
| __ge__(...)
| x.__ge__(y) <==> x>=y
|
| __getattribute__(...)
-- More --
DI and IOC are two design pattern that mainly focusing on providing loose coupling between components, or simply a way in which we decouple the conventional dependency relationships between object so that the objects are not tight to each other.
With following examples, I am trying to explain both these concepts.
Previously we are writing code like this
Public MyClass{
DependentClass dependentObject
/*
At somewhere in our code we need to instantiate
the object with new operator inorder to use it or perform some method.
*/
dependentObject= new DependentClass();
dependentObject.someMethod();
}
With Dependency injection, the dependency injector will take care of the instantiation of objects
Public MyClass{
/* Dependency injector will instantiate object*/
DependentClass dependentObject
/*
At somewhere in our code we perform some method.
The process of instantiation will be handled by the dependency injector
*/
dependentObject.someMethod();
}
The above process of giving the control to some other (for example the container) for the instantiation and injection can be termed as Inversion of Control and the process in which the IOC container inject the dependency for us can be termed as dependency injection.
IOC is the principle where the control flow of a program is inverted: instead of the programmer controlling the flow of a program, program controls the flow by reducing the overhead to the programmer.and the process used by the program to inject dependency is termed as DI
The two concepts work together providing us with a way to write much more flexible, reusable, and encapsulated code, which make them as important concepts in designing object-oriented solutions.
Also Recommend to read.
You can also check one of my similar answer here
Difference between Inversion of Control & Dependency Injection
Nobody mentioned it so far... with utf8mb4 which is 4-byte and can also store emoticons (we should never more use 3-byte utf8) and we can avoid errors like Incorrect string value: \xF0\x9F\x98\...
we should not use typical VARCHAR(255) but rather VARCHAR(191) because in case utf8mb4 and VARCHAR(255) same part of data are stored off-page and you can not create index for column VARCHAR(255) but for VARCHAR(191) you can. It is because the maximum indexed column size is 767 bytes for ROW_FORMAT=COMPACT or ROW_FORMAT=REDUNDANT.
For newer row formats ROW_FORMAT=DYNAMIC or ROW_FORMAT=COMPRESSED (which requires newer file format innodb_file_format=Barracuda not older Antelope) maximum indexed column size is 3072. It is available since MySQL >= 5.6.3 when innodb_large_prefix=1 (disabled by default for MySQL <= 5.7.6 and enabled by default for MySQL >= 5.7.7). So in this case we can use VARCHAR(768) for utf8mb4 (or VARCHAR(1024) for old utf8) for indexed column. Option innodb_large_prefix is deprecated since 5.7.7 because its behavior is built-in MySQL 8 (in this version is option removed).
it simple, select columns want to insert primary key and click on Key icon on header and save table
happy coding..,
If there is no authentication enabled (username/password) and still unable to connect. Just use localhost and default port. Click Test and Save, if test connection is successful.
Regards Jagdish
Java - encrypt / decrypt user name and password from a configuration file
Code from above link
DESKeySpec keySpec = new DESKeySpec("Your secret Key phrase".getBytes("UTF8"));
SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
SecretKey key = keyFactory.generateSecret(keySpec);
sun.misc.BASE64Encoder base64encoder = new BASE64Encoder();
sun.misc.BASE64Decoder base64decoder = new BASE64Decoder();
.........
// ENCODE plainTextPassword String
byte[] cleartext = plainTextPassword.getBytes("UTF8");
Cipher cipher = Cipher.getInstance("DES"); // cipher is not thread safe
cipher.init(Cipher.ENCRYPT_MODE, key);
String encryptedPwd = base64encoder.encode(cipher.doFinal(cleartext));
// now you can store it
......
// DECODE encryptedPwd String
byte[] encrypedPwdBytes = base64decoder.decodeBuffer(encryptedPwd);
Cipher cipher = Cipher.getInstance("DES");// cipher is not thread safe
cipher.init(Cipher.DECRYPT_MODE, key);
byte[] plainTextPwdBytes = (cipher.doFinal(encrypedPwdBytes));
(The approach of the better_enums library)
There is a way to do enum to string in current C++ that looks like this:
ENUM(Channel, char, Red = 1, Green, Blue)
// "Same as":
// enum class Channel : char { Red = 1, Green, Blue };
Usage:
Channel c = Channel::_from_string("Green"); // Channel::Green (2)
c._to_string(); // string "Green"
for (Channel c : Channel::_values())
std::cout << c << std::endl;
// And so on...
All operations can be made constexpr
. You can also implement the C++17 reflection proposal mentioned in the answer by @ecatmur.
#
) is the only way to convert a token to a string in current C++.constexpr
. It can also be made to work with C++98 + __VA_ARGS__
. It is definitely modern C++.The macro's definition is somewhat involved, so I'm answering this in several ways.
It is straightforward to extend this answer to the features of the library – nothing "important" is left out here. It is, however, quite tedious, and there are compiler portability concerns.
Disclaimer: I am the author of both the CodeProject article and the library.
You can try the code in this answer, the library, and the implementation of N4428 live online in Wandbox. The library documentation also contains an overview of how to use it as N4428, which explains the enums portion of that proposal.
The code below implements conversions between enums and strings. However, it can be extended to do other things as well, such as iteration. This answer wraps an enum in a struct
. You can also generate a traits struct
alongside an enum instead.
The strategy is to generate something like this:
struct Channel {
enum _enum : char { __VA_ARGS__ };
constexpr static const Channel _values[] = { __VA_ARGS__ };
constexpr static const char * const _names[] = { #__VA_ARGS__ };
static const char* _to_string(Channel v) { /* easy */ }
constexpr static Channel _from_string(const char *s) { /* easy */ }
};
The problems are:
{Red = 1, Green, Blue}
as the initializer for the values array. This is not valid C++, because Red
is not an assignable expression. This is solved by casting each constant to a type T
that has an assignment operator, but will drop the assignment: {(T)Red = 1, (T)Green, (T)Blue}
.{"Red = 1", "Green", "Blue"}
as the initializer for the names array. We will need to trim off the " = 1"
. I am not aware of a great way to do this at compile time, so we will defer this to run time. As a result, _to_string
won't be constexpr
, but _from_string
can still be constexpr
, because we can treat whitespace and equals signs as terminators when comparing with untrimmed strings.__VA_ARGS__
. This is pretty standard. This answer includes a simple version that can handle up to 8 elements.constexpr
(or just const
) arrays at namespace scope, or regular arrays in non-constexpr
static inline functions. The code in this answer is for C++11 and takes the former approach. The CodeProject article is for C++98 and takes the latter.#include <cstddef> // For size_t.
#include <cstring> // For strcspn, strncpy.
#include <stdexcept> // For runtime_error.
// A "typical" mapping macro. MAP(macro, a, b, c, ...) expands to
// macro(a) macro(b) macro(c) ...
// The helper macro COUNT(a, b, c, ...) expands to the number of
// arguments, and IDENTITY(x) is needed to control the order of
// expansion of __VA_ARGS__ on Visual C++ compilers.
#define MAP(macro, ...) \
IDENTITY( \
APPLY(CHOOSE_MAP_START, COUNT(__VA_ARGS__)) \
(macro, __VA_ARGS__))
#define CHOOSE_MAP_START(count) MAP ## count
#define APPLY(macro, ...) IDENTITY(macro(__VA_ARGS__))
#define IDENTITY(x) x
#define MAP1(m, x) m(x)
#define MAP2(m, x, ...) m(x) IDENTITY(MAP1(m, __VA_ARGS__))
#define MAP3(m, x, ...) m(x) IDENTITY(MAP2(m, __VA_ARGS__))
#define MAP4(m, x, ...) m(x) IDENTITY(MAP3(m, __VA_ARGS__))
#define MAP5(m, x, ...) m(x) IDENTITY(MAP4(m, __VA_ARGS__))
#define MAP6(m, x, ...) m(x) IDENTITY(MAP5(m, __VA_ARGS__))
#define MAP7(m, x, ...) m(x) IDENTITY(MAP6(m, __VA_ARGS__))
#define MAP8(m, x, ...) m(x) IDENTITY(MAP7(m, __VA_ARGS__))
#define EVALUATE_COUNT(_1, _2, _3, _4, _5, _6, _7, _8, count, ...) \
count
#define COUNT(...) \
IDENTITY(EVALUATE_COUNT(__VA_ARGS__, 8, 7, 6, 5, 4, 3, 2, 1))
// The type "T" mentioned above that drops assignment operations.
template <typename U>
struct ignore_assign {
constexpr explicit ignore_assign(U value) : _value(value) { }
constexpr operator U() const { return _value; }
constexpr const ignore_assign& operator =(int dummy) const
{ return *this; }
U _value;
};
// Prepends "(ignore_assign<_underlying>)" to each argument.
#define IGNORE_ASSIGN_SINGLE(e) (ignore_assign<_underlying>)e,
#define IGNORE_ASSIGN(...) \
IDENTITY(MAP(IGNORE_ASSIGN_SINGLE, __VA_ARGS__))
// Stringizes each argument.
#define STRINGIZE_SINGLE(e) #e,
#define STRINGIZE(...) IDENTITY(MAP(STRINGIZE_SINGLE, __VA_ARGS__))
// Some helpers needed for _from_string.
constexpr const char terminators[] = " =\t\r\n";
// The size of terminators includes the implicit '\0'.
constexpr bool is_terminator(char c, size_t index = 0)
{
return
index >= sizeof(terminators) ? false :
c == terminators[index] ? true :
is_terminator(c, index + 1);
}
constexpr bool matches_untrimmed(const char *untrimmed, const char *s,
size_t index = 0)
{
return
is_terminator(untrimmed[index]) ? s[index] == '\0' :
s[index] != untrimmed[index] ? false :
matches_untrimmed(untrimmed, s, index + 1);
}
// The macro proper.
//
// There are several "simplifications" in this implementation, for the
// sake of brevity. First, we have only one viable option for declaring
// constexpr arrays: at namespace scope. This probably should be done
// two namespaces deep: one namespace that is likely to be unique for
// our little enum "library", then inside it a namespace whose name is
// based on the name of the enum to avoid collisions with other enums.
// I am using only one level of nesting.
//
// Declaring constexpr arrays inside the struct is not viable because
// they will need out-of-line definitions, which will result in
// duplicate symbols when linking. This can be solved with weak
// symbols, but that is compiler- and system-specific. It is not
// possible to declare constexpr arrays as static variables in
// constexpr functions due to the restrictions on such functions.
//
// Note that this prevents the use of this macro anywhere except at
// namespace scope. Ironically, the C++98 version of this, which can
// declare static arrays inside static member functions, is actually
// more flexible in this regard. It is shown in the CodeProject
// article.
//
// Second, for compilation performance reasons, it is best to separate
// the macro into a "parametric" portion, and the portion that depends
// on knowing __VA_ARGS__, and factor the former out into a template.
//
// Third, this code uses a default parameter in _from_string that may
// be better not exposed in the public interface.
#define ENUM(EnumName, Underlying, ...) \
namespace data_ ## EnumName { \
using _underlying = Underlying; \
enum { __VA_ARGS__ }; \
\
constexpr const size_t _size = \
IDENTITY(COUNT(__VA_ARGS__)); \
\
constexpr const _underlying _values[] = \
{ IDENTITY(IGNORE_ASSIGN(__VA_ARGS__)) }; \
\
constexpr const char * const _raw_names[] = \
{ IDENTITY(STRINGIZE(__VA_ARGS__)) }; \
} \
\
struct EnumName { \
using _underlying = Underlying; \
enum _enum : _underlying { __VA_ARGS__ }; \
\
const char * _to_string() const \
{ \
for (size_t index = 0; index < data_ ## EnumName::_size; \
++index) { \
\
if (data_ ## EnumName::_values[index] == _value) \
return _trimmed_names()[index]; \
} \
\
throw std::runtime_error("invalid value"); \
} \
\
constexpr static EnumName _from_string(const char *s, \
size_t index = 0) \
{ \
return \
index >= data_ ## EnumName::_size ? \
throw std::runtime_error("invalid identifier") : \
matches_untrimmed( \
data_ ## EnumName::_raw_names[index], s) ? \
(EnumName)(_enum)data_ ## EnumName::_values[ \
index] : \
_from_string(s, index + 1); \
} \
\
EnumName() = delete; \
constexpr EnumName(_enum value) : _value(value) { } \
constexpr operator _enum() const { return (_enum)_value; } \
\
private: \
_underlying _value; \
\
static const char * const * _trimmed_names() \
{ \
static char *the_names[data_ ## EnumName::_size]; \
static bool initialized = false; \
\
if (!initialized) { \
for (size_t index = 0; index < data_ ## EnumName::_size; \
++index) { \
\
size_t length = \
std::strcspn(data_ ## EnumName::_raw_names[index],\
terminators); \
\
the_names[index] = new char[length + 1]; \
\
std::strncpy(the_names[index], \
data_ ## EnumName::_raw_names[index], \
length); \
the_names[index][length] = '\0'; \
} \
\
initialized = true; \
} \
\
return the_names; \
} \
};
and
// The code above was a "header file". This is a program that uses it.
#include <iostream>
#include "the_file_above.h"
ENUM(Channel, char, Red = 1, Green, Blue)
constexpr Channel channel = Channel::_from_string("Red");
int main()
{
std::cout << channel._to_string() << std::endl;
switch (channel) {
case Channel::Red: return 0;
case Channel::Green: return 1;
case Channel::Blue: return 2;
}
}
static_assert(sizeof(Channel) == sizeof(char), "");
The program above prints Red
, as you would expect. There is a degree of type safety, since you can't create an enum without initializing it, and deleting one of the cases from the switch
will result in a warning from the compiler (depending on your compiler and flags). Also, note that "Red"
was converted to an enum during compilation.
if(gender.equals(g1)); <---
if(gender == "Female"); <---
You have semicolon after if.REMOVE IT.
We can try this
$scope.$apply(function() {
$scope.step1 = true;
//scope.list2.length = 0;
});
Python can do unexpected things when new objects are defined from existing ones. You stated in a comment above that your dataframe is defined along the lines of df = df_all.loc[df_all['issueid']==specific_id,:]
. In this case, df
is really just a stand-in for the rows stored in the df_all
object: a new object is NOT created in memory.
To avoid these issues altogether, I often have to remind myself to use the copy
module, which explicitly forces objects to be copied in memory so that methods called on the new objects are not applied to the source object. I had the same problem as you, and avoided it using the deepcopy
function.
In your case, this should get rid of the warning message:
from copy import deepcopy
df = deepcopy(df_all.loc[df_all['issueid']==specific_id,:])
df['industry'] = 'yyy'
EDIT: Also see David M.'s excellent comment below!
df = df_all.loc[df_all['issueid']==specific_id,:].copy()
df['industry'] = 'yyy'
Swift 5:
If you have UILabel and someway boundingRect isn't working for you (I faced this problem. It always returned 1 line height.) there is an extension to easily calculate label size.
extension UILabel {
func getSize(constrainedWidth: CGFloat) -> CGSize {
return systemLayoutSizeFitting(CGSize(width: constrainedWidth, height: UIView.layoutFittingCompressedSize.height), withHorizontalFittingPriority: .required, verticalFittingPriority: .fittingSizeLevel)
}
}
You can use it like this:
let label = UILabel()
label.text = "My text\nIs\nAwesome"
let labelSize = label.getSize(constrainedWidth:200.0)
Works for me
I have this function in my toolbelt since years ago (all the function and variable names are messy and mixing Spanish and English, sorry for that).
It lets the user use ,
and .
to separate the decimals and will try to do the best if both symbols are used.
Public Shared Function TryCDec(ByVal texto As String, Optional ByVal DefaultValue As Decimal = 0) As Decimal
If String.IsNullOrEmpty(texto) Then
Return DefaultValue
End If
Dim CurAsTexto As String = texto.Trim.Replace("$", "").Replace(" ", "")
''// You can probably use a more modern way to find out the
''// System current locale, this function was done long time ago
Dim SepDecimal As String, SepMiles As String
If CDbl("3,24") = 324 Then
SepDecimal = "."
SepMiles = ","
Else
SepDecimal = ","
SepMiles = "."
End If
If InStr(CurAsTexto, SepDecimal) > 0 Then
If InStr(CurAsTexto, SepMiles) > 0 Then
''//both symbols was used find out what was correct
If InStr(CurAsTexto, SepDecimal) > InStr(CurAsTexto, SepMiles) Then
''// The usage was correct, but get rid of thousand separator
CurAsTexto = Replace(CurAsTexto, SepMiles, "")
Else
''// The usage was incorrect, but get rid of decimal separator and then replace it
CurAsTexto = Replace(CurAsTexto, SepDecimal, "")
CurAsTexto = Replace(CurAsTexto, SepMiles, SepDecimal)
End If
End If
Else
CurAsTexto = Replace(CurAsTexto, SepMiles, SepDecimal)
End If
''// At last we try to tryParse, just in case
Dim retval As Decimal = DefaultValue
Decimal.TryParse(CurAsTexto, retval)
Return retval
End Function
My issue was inside of my app.gradle. I ran into this issue when I moved
apply plugin: "com.android.application"
from the top line to below a line with
apply from:
I switched the plugin back to the top and violá
My exact error was
Could not find method android() for arguments [dotenv_wke4apph61tdae6bfodqe7sj$_run_closure1@5d9d91a5] on project ':app' of type org.gradle.api.Project.
The top of my app.gradle now looks like this
project.ext.envConfigFiles = [
debug: ".env",
release: ".env",
anothercustombuild: ".env",
]
apply from: project(':react-native-config').projectDir.getPath() + "/dotenv.gradle"
apply plugin: "com.android.application"
In latest git version like 2.7.4,
git checkout branch_name
#branch name which you want to change tracking branch
git branch --set-upstream-to=upstream/tracking_branch_name
#upstream - remote name
Try this:
grep "string to search for" FileNameToSearch | cut -d ":" -f 4 | sort -n | uniq -c
Sample:
grep "SMTP connect from unknown" maillog | cut -d ":" -f 4 | sort -n | uniq -c
6 SMTP connect from unknown [188.190.118.90]
54 SMTP connect from unknown [62.193.131.114]
3 SMTP connect from unknown [91.222.51.253]
If none of the TargetDir or other macros point to the right place, use the ".." directory to go backwards up the folder hierarchy.
ie. Use $(SolutionDir)\..\..
to get your base directory.
For list of all macros, see here:
One way would be to just escape the quotes properly:
<input type="button" value="click" id="mybtn"
onclick="myfunction('/myController/myAction',
'myfuncionOnOK(\'/myController2/myAction2\',
\'myParameter2\');',
'myfuncionOnCancel(\'/myController3/myAction3\',
\'myParameter3\');');">
In this case, though, I think a better way to handle this would be to wrap the two handlers in anonymous functions:
<input type="button" value="click" id="mybtn"
onclick="myfunction('/myController/myAction',
function() { myfuncionOnOK('/myController2/myAction2',
'myParameter2'); },
function() { myfuncionOnCancel('/myController3/myAction3',
'myParameter3'); });">
And then, you could call them from within myfunction
like this:
function myfunction(url, onOK, onCancel)
{
// Do whatever myfunction would normally do...
if (okClicked)
{
onOK();
}
if (cancelClicked)
{
onCancel();
}
}
That's probably not what myfunction
would actually look like, but you get the general idea. The point is, if you use anonymous functions, you have a lot more flexibility, and you keep your code a lot cleaner as well.
# reassign depth values under 10 to zero
df$depth[df$depth<10] <- 0
(For the columns that are factors, you can only assign values that are factor levels. If you wanted to assign a value that wasn't currently a factor level, you would need to create the additional level first:
levels(df$species) <- c(levels(df$species), "unknown")
df$species[df$depth<10] <- "unknown"
The cross-browser solution without DOM manipulation given above does not work because it gives the first matching rule, not the last. The last matching rule is the one which applies. Here is a working version:
function getStyleRuleValue(style, selector) {
let value = null;
for (let i = 0; i < document.styleSheets.length; i++) {
const mysheet = document.styleSheets[i];
const myrules = mysheet.cssRules ? mysheet.cssRules : mysheet.rules;
for (let j = 0; j < myrules.length; j++) {
if (myrules[j].selectorText &&
myrules[j].selectorText.toLowerCase() === selector) {
value = myrules[j].style[style];
}
}
}
return value;
}
However, this simple search will not work in case of complex selectors.
if (discount||0) != 0
#...
end
Previous answers got you list of torch.Size Here is how to get list of ints
listofints = [int(x) for x in tensor.shape]
for fedora and python3 use: dnf install mysql-connector-python3
super
is used to call the constructor
, methods
and properties
of parent class.
Just add these lines in your styles.xml file
<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
<!-- This is used for statusbar color. -->
<item name="colorPrimaryDark">@color/colorPrimaryDark</item>
<!-- This is used for statusbar content color. If statusbarColor is light, use "true" otherwise use "false"-->
<item name="android:windowLightStatusBar">false</item>
</style>
In my situation, I didn't have the full vendor dependencies in place (composer file was messed up during original install) - so running any artisan commands caused a failure.
I was able to use the --no-scripts
flag to prevent artisan from executing before it was included. Once my dependencies were in place, everything worked as expected.
composer update --no-scripts
The only i was able to resolve this issue was to delete the local and git repo and create the same again at both ends. Works fine for now.
Now you can change the primary dns (index=1), assuming that your interface is static (not using dhcp)
You can set your DNS servers statically even if you use DHCP to obtain your IP address.
Example under Windows 7 to add two DN servers, the command is as follows:
netsh interface ipv4 add dns "Local Area Connection" address=192.168.x.x index=1
netsh interface ipv4 add dns "Local Area Connection" address=192.168.x.x index=2
Here are two quickie approaches I know of:
In base
AQ1 <- airquality
AQ1[is.na(AQ1 <- airquality)] <- 0
AQ1
Not in base
library(qdap)
NAer(airquality)
PS P.S. Does my command above create a new dataframe called AQ1?
Look at AQ1 and see
Something like this has worked for me (with Bootstrap 3):
.navbar-nav > li > a:hover, .navbar-default .navbar-nav > li > a:focus{
font-family: proxima-nova;
font-style: normal;
font-weight: 100;
letter-spacing: 3px;
text-transform: uppercase;
color: black;
}
In my case I also wanted the link text to remain black before the hover so i added .navbar-nav > li > a
.navbar-nav > li > a:hover, .navbar-default .navbar-nav > li > a:focus, .navbar-nav > li > a{
font-family: proxima-nova;
font-style: normal;
font-weight: 100;
letter-spacing: 3px;
text-transform: uppercase;
color: black;
}
The paint()
method supports painting via a Graphics object.
The repaint()
method is used to cause paint()
to be invoked by the AWT painting thread.
@Matthew Kraus Please Click tools from menu bar then click Options , Find the Source Control then select "None" from dropdown list and Click OK. Delete hidden .git folder from your project folder. Re-open your project.
For this specific use-case using try..except..else
is the cleanest solution, the else
clause will be executed if no exception was raised.
NOTE: The else
clause must follow all except
clauses
for i in iterator:
try:
# Do something.
except:
# Handle exception
else:
# Continue doing something
EAI_AGAIN is a DNS lookup timed out error, means it is a network connectivity error or proxy related error.
My main question is what does dns.js do?
Some more info: http://www.codingdefined.com/2015/06/nodejs-error-errno-eaiagain.html
<script>
if ($.browser.msie) {
$('input[placeholder]').each(function() {
var input = $(this);
$(input).val(input.attr('placeholder'));
$(input).focus(function() {
if (input.val() == input.attr('placeholder')) {
input.val('');
}
});
$(input).blur(function() {
if (input.val() == '' || input.val() == input.attr('placeholder')) {
input.val(input.attr('placeholder'));
}
});
});
}
;
</script>
So you have committed your local changes to your local repository. Then in order to get remote changes to your local repository without making changes to your local files, you can use git fetch
. Actually git pull
is a two step operation: a non-destructive git fetch
followed by a git merge
. See What is the difference between 'git pull' and 'git fetch'? for more discussion.
Detailed example:
Suppose your repository is like this (you've made changes test2
:
* ed0bcb2 - (HEAD, master) test2
* 4942854 - (origin/master, origin/HEAD) first
And the origin
repository is like this (someone else has committed test1
):
* 5437ca5 - (HEAD, master) test1
* 4942854 - first
At this point of time, git will complain and ask you to pull first if you try to push your test2
to remote repository. If you want to see what test1 is without modifying your local repository, run this:
$ git fetch
Your result local repository would be like this:
* ed0bcb2 - (HEAD, master) test2
| * 5437ca5 - (origin/master, origin/HEAD) test1
|/
* 4942854 - first
Now you have the remote changes in another branch, and you keep your local files intact.
Then what's next? You can do a git merge
, which will be the same effect as git pull
(when combined with the previous git fetch
), or, as I would prefer, do a git rebase origin/master
to apply your change on top of origin/master
, which gives you a cleaner history.
Late to the party. I was looking into this myself and just found about this axes option called ColorOrder you can specify the colour order for the session or just for the figure and then just plot an array and let MATLAB automatically cycle through the colours specified.
see Changing the Default ColorOrder
example
set(0,'DefaultAxesColorOrder',jet(5))
A=rand(10,5);
plot(A);
There's actually a pretty easy way to do this. The code should be something like:
<script type="test/javascript">
function showcontent(x){
if(window.XMLHttpRequest) {
xmlhttp = new XMLHttpRequest();
} else {
xmlhttp = new ActiveXObject('Microsoft.XMLHTTP');
}
xmlhttp.onreadystatechange = function() {
if(xmlhttp.readyState == 1) {
document.getElementById('content').innerHTML = "<img src='loading.gif' />";
}
if(xmlhttp.readyState == 4 && xmlhttp.status == 200) {
document.getElementById('content').innerHTML = xmlhttp.responseText;
}
}
xmlhttp.open('POST', x+'.html', true);
xmlhttp.setRequestHeader('Content-type','application/x-www-form-urlencoded');
xmlhttp.send(null);
}
And in the HTML:
<body onload="showcontent(main)"> <!-- onload optional -->
<div id="content"><img src="loading.gif"></div> <!-- leave img out if not onload -->
</body>
I did something like that on my page and it works great.
-L
returns true if the "file" exists and is a symbolic link (the linked file may or may not exist). You want -f
(returns true if file exists and is a regular file) or maybe just -e
(returns true if file exists regardless of type).
According to the GNU manpage, -h
is identical to -L
, but according to the BSD manpage, it should not be used:
-h file
True if file exists and is a symbolic link. This operator is retained for compatibility with previous versions of this program. Do not rely on its existence; use -L instead.
You can do it without having to create a real Hibernate mapping. Try this:
SELECT * FROM Employee e, Team t WHERE e.Id_team=t.Id_team
I think in general, you'd want a web service for a blocking task (this tasks needs to be completed before we execute more code), and a message queue for a non-blocking task (could take quite a while, but we don't need to wait for it).
You can take advantage of the fact that span
is an inline element
span{
word-spacing:10px;
}
However, this solution will break if you have more than one word of text in your span
Based on the answer of @JustinMorris above and @NiravDangi here https://stackoverflow.com/a/8504958/2232148 we must take the background and foreground of a view and assemble them like this:
public static Bitmap takeScreenshot(View view, Bitmap.Config quality) {
Bitmap bitmap = Bitmap.createBitmap(view.getWidth(), view.getHeight(), quality);
Canvas canvas = new Canvas(bitmap);
Drawable backgroundDrawable = view.getBackground();
if (backgroundDrawable != null) {
backgroundDrawable.draw(canvas);
} else {
canvas.drawColor(Color.WHITE);
}
view.draw(canvas);
return bitmap;
}
The quality parameter takes a constant of Bitmap.Config, typically either Bitmap.Config.RGB_565
or Bitmap.Config.ARGB_8888
.
Lets take fibonacci series as an example
1,1,2,3,5,8,13,21....
first number: 1
Second number: 1
Third Number: 2
Another way to put it,
Bottom(first) number: 1
Top (Eighth) number on the given sequence: 21
In case of first five fibonacci number
Bottom(first) number :1
Top (fifth) number: 5
Now lets take a look of recursive Fibonacci series algorithm as an example
public int rcursive(int n) {
if ((n == 1) || (n == 2)) {
return 1;
} else {
return rcursive(n - 1) + rcursive(n - 2);
}
}
Now if we execute this program with following commands
rcursive(5);
if we closely look into the algorithm, in-order to generate fifth number it requires 3rd and 4th numbers. So my recursion actually start from top(5) and then goes all the way to bottom/lower numbers. This approach is actually top-down approach.
To avoid doing same calculation multiple times we use Dynamic Programming techniques. We store previously computed value and reuse it. This technique is called memoization. There are more to Dynamic programming other then memoization which is not needed to discuss current problem.
Top-Down
Lets rewrite our original algorithm and add memoized techniques.
public int memoized(int n, int[] memo) {
if (n <= 2) {
return 1;
} else if (memo[n] != -1) {
return memo[n];
} else {
memo[n] = memoized(n - 1, memo) + memoized(n - 2, memo);
}
return memo[n];
}
And we execute this method like following
int n = 5;
int[] memo = new int[n + 1];
Arrays.fill(memo, -1);
memoized(n, memo);
This solution is still top-down as algorithm start from top value and go to bottom each step to get our top value.
Bottom-Up
But, question is, can we start from bottom, like from first fibonacci number then walk our way to up. Lets rewrite it using this techniques,
public int dp(int n) {
int[] output = new int[n + 1];
output[1] = 1;
output[2] = 1;
for (int i = 3; i <= n; i++) {
output[i] = output[i - 1] + output[i - 2];
}
return output[n];
}
Now if we look into this algorithm it actually start from lower values then go to top. If i need 5th fibonacci number i am actually calculating 1st, then second then third all the way to up 5th number. This techniques actually called bottom-up techniques.
Last two, algorithms full-fill dynamic programming requirements. But one is top-down and another one is bottom-up. Both algorithm has similar space and time complexity.
BOOTSTRAP 4
you can use a combination of
fa-chevron-down, fa-chevron-up
fa-sort-down, fa-sort-up
<th class="text-center">
<div class="btn-group" role="group">
<button type="button" class="btn btn-xs btn-link py-0 pl-0 pr-1">
Some Text OR icon
</button>
<div class="btn-group-vertical">
<a href="?sort=asc" class="btn btn-xs btn-link p-0">
<i class="fas fa-sort-up"></i>
</a>
<a href="?sort=desc" class="btn btn-xs btn-link p-0">
<i class="fas fa-sort-down"></i>
</a>
</div>
</div>
</th>
To call a specific exception such as FileNotFoundException use this format
if (-not (Test-Path $file))
{
throw [System.IO.FileNotFoundException] "$file not found."
}
To throw a general exception use the throw command followed by a string.
throw "Error trying to do a task"
When used inside a catch, you can provide additional information about what triggered the error