You can use IPython.display.clear_output
to clear the output of a cell.
from IPython.display import clear_output
for i in range(10):
clear_output(wait=True)
print("Hello World!")
At the end of this loop you will only see one Hello World!
.
Without a code example it's not easy to give you working code. Probably buffering the latest n events is a good strategy. Whenever the buffer changes you can clear the cell's output and print the buffer again.
The selected answer did not work for me, as I had spaces, quotes and other strange characters in my filenames. To quote the input for basename
, you should use:
ls /path/to/my/directory | xargs -n1 -I{} basename "{}"
This is guaranteed to work, regardless of what the files are called.
One can ask with some Java code:
long maxBytes = Runtime.getRuntime().maxMemory();
System.out.println("Max memory: " + maxBytes / 1024 / 1024 + "M");
See javadoc.
I encountered the same error when added http-builder to dependencies.
In my case, I could solve by simply excluding asm like this:
compile('org.codehaus.groovy.modules.http-builder:http-builder:0.7'){
excludes 'xml-apis'
exclude(group:'xerces', module: 'xercesImpl')
excludes 'asm'
}
The solution using flexbox without justify-content: space-between
.
<div class="title">
<span>Cumulative performance</span>
<span>20/02/2011</span>
</div>
.title {
display: flex;
}
span:first-of-type {
flex: 1;
}
When we use flex:1
on the first <span>
, it takes up the entire remaining space and moves the second <span>
to the right. The Fiddle with this solution: https://jsfiddle.net/2k1vryn7/
Here https://jsfiddle.net/7wvx2uLp/3/ you can see the difference between two flexbox approaches: flexbox with justify-content: space-between
and flexbox with flex:1
on the first <span>
.
In your particular case: if ($var)
.
You need to use isset
if you don't know whether the variable exists or not. Since you declared it on the very first line though, you know it exists, hence you don't need to, nay, should not use isset
.
The same goes for empty
, only that empty
also combines a check for the truthiness of the value. empty
is equivalent to !isset($var) || !$var
and !empty
is equivalent to isset($var) && $var
, or isset($var) && $var == true
.
If you only want to test a variable that should exist for truthiness, if ($var)
is perfectly adequate and to the point.
Just putting my 2 cents here.
Given the following class:
class Foo
{
private $data;
public function __construct(array $data)
{
$this->data = $data;
}
public function __get($name)
{
return $data[$name];
}
public function __isset($name)
{
return array_key_exists($name, $this->data);
}
}
the following will happen:
$foo = new Foo(['key' => 'value', 'bar' => null]);
var_dump(property_exists($foo, 'key')); // false
var_dump(isset($foo->key)); // true
var_dump(property_exists($foo, 'bar')); // false
var_dump(isset($foo->bar)); // true, although $data['bar'] == null
Hope this will help anyone
I usually use something like this,
if (!str.length) {
// Do something
}
How about what is a session bean and describe some differences between stateless and stateful session beans.
Most probably it has to do with caching on the device. Catching the exception and ignoring is not nice but my problem was fixed and it seems to work.
You're not supplying it with an array in your example. The following compiles fine:
public @interface SampleAnnotation {
String[] sampleValues();
}
public class Values {
public static final String val0 = "A";
public static final String val1 = "B";
@SampleAnnotation(sampleValues={ val0, val1 })
public void foo() {
}
}
IMO extremely important rule of thumb for your client side js code is to keep separated the data handling and ui building logic into different funcs, which is also valid for axios data fetching ... in this way your control flow and error handlings will be much more simple and easier to manage, as it could be seen from this ok fetch
and this NOK fetch
<script src="https://unpkg.com/axios/dist/axios.min.js"></script>
<script>
function getUrlParams (){
var url_params = new URLSearchParams();
if( window.location.toString().indexOf("?") != -1) {
var href_part = window.location.search.split('?')[1]
href_part.replace(/([^=&]+)=([^&]*)/g,
function(m, key, value) {
var attr = decodeURIComponent(key)
var val = decodeURIComponent(value)
url_params.append(attr,val);
});
}
// for(var pair of url_params.entries()) { consolas.log(pair[0]+ '->'+ pair[1]); }
return url_params ;
}
function getServerData (url, urlParams ){
if ( typeof url_params == "undefined" ) { urlParams = getUrlParams() }
return axios.get(url , { params: urlParams } )
.then(response => {
return response ;
})
.catch(function(error) {
console.error ( error )
return error.response;
})
}
// Action !!!
getServerData(url , url_params)
.then( response => {
if ( response.status === 204 ) {
var warningMsg = response.statusText
console.warn ( warningMsg )
return
} else if ( response.status === 404 || response.status === 400) {
var errorMsg = response.statusText // + ": " + response.data.msg // this is my api
console.error( errorMsg )
return ;
} else {
var data = response.data
var dataType = (typeof data)
if ( dataType === 'undefined' ) {
var msg = 'unexpected error occurred while fetching data !!!'
// pass here to the ui change method the msg aka
// showMyMsg ( msg , "error")
} else {
var items = data.dat // obs this is my api aka "dat" attribute - that is whatever happens to be your json key to get the data from
// call here the ui building method
// BuildList ( items )
}
return
}
})
</script>
Here is a modification for the prev. answer. The main difference is when the user is not authenticated, it uses the original "HandleUnauthorizedRequest" method to redirect to login page:
protected override void HandleUnauthorizedRequest(AuthorizationContext filterContext)
{
if (filterContext.HttpContext.User.Identity.IsAuthenticated) {
filterContext.Result = new RedirectToRouteResult(
new RouteValueDictionary(
new
{
controller = "Account",
action = "Unauthorised"
})
);
}
else
{
base.HandleUnauthorizedRequest(filterContext);
}
}
By adding a callback argument, you are telling jQuery that you want to make a request for JSONP using a script element instead of a request for JSON using XMLHttpRequest.
JSONP is not JSON. It is a JavaScript program.
Change your server so it outputs the right MIME type for JSONP which is application/javascript
.
(While you are at it, stop telling jQuery that you are expecting JSON as that is contradictory: dataType: 'jsonp'
).
There is a straightforward solution without messing with matplotlib: just pandas.
Tweaking the original example:
table = sql.read_frame(query,connection)
ax = table[0].plot(color=colors[0],ylim=(0,100))
ax2 = table[1].plot(secondary_y=True,color=colors[1], ax=ax)
ax.set_ylabel('Left axes label')
ax2.set_ylabel('Right axes label')
Basically, when the secondary_y=True
option is given (eventhough ax=ax
is passed too) pandas.plot
returns a different axes which we use to set the labels.
I know this was answered long ago, but I think this approach worths it.
For some reason no one has mentioned the fact that the bashrc needs to be re-sourced after editing. You can either log out and log back in (like mentioned above) but you can also use the commands: source ~/.bashrc
or . ~/.bashrc
.
**check this out**
<!DOCTYPE html>
<html>
<head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
$(document).keypress(function(e)
{
var keynum;
if(window.event)
{ // IE
keynum = e.keyCode;
}
else if(e.which)
{
// Netscape/Firefox/Opera
keynum = e.which;
}
alert(String.fromCharCode(keynum));
var unicode=e.keyCode? e.keyCode : e.charCode;
alert(unicode);
});
});
</script>
</head>
<body>
<input type="text"></input>
</body>
</html>
We can three part naming like database_name..object_name
The below query will create the table into our database(with out constraints)
SELECT *
INTO DestinationDB..MyDestinationTable
FROM SourceDB..MySourceTable
Alternatively you could:
INSERT INTO DestinationDB..MyDestinationTable
SELECT * FROM SourceDB..MySourceTable
If your destination table exists and is empty.
In the command line type service apache2 status
then hit enter. The result should say:
Apache2 is running (pid xxxx)
Using plyr
package:
library(plyr)
count(mydf$V1)
It will return you a frequency of each value.
I just had the same error with Visual Studio 2013 and EF6. I had to use a NewGet packed Entity Framework and done the job perfectly
psql -U username -d mydatabase -c 'SELECT * FROM mytable'
If you're new to postgresql and unfamiliar with using the command line tool psql
then there is some confusing behaviour you should be aware of when you've entered an interactive session.
For example, initiate an interactive session:
psql -U username mydatabase
mydatabase=#
At this point you can enter a query directly but you must remember to terminate the query with a semicolon ;
For example:
mydatabase=# SELECT * FROM mytable;
If you forget the semicolon then when you hit enter you will get nothing on your return line because psql
will be assuming that you have not finished entering your query. This can lead to all kinds of confusion. For example, if you re-enter the same query you will have most likely create a syntax error.
As an experiment, try typing any garble you want at the psql prompt then hit enter. psql
will silently provide you with a new line. If you enter a semicolon on that new line and then hit enter, then you will receive the ERROR:
mydatabase=# asdfs
mydatabase=# ;
ERROR: syntax error at or near "asdfs"
LINE 1: asdfs
^
The rule of thumb is:
If you received no response from psql
but you were expecting at least SOMETHING, then you forgot the semicolon ;
Oracle will throw ORA-00904
if executing user does not have proper permissions on objects involved in the query.
I got similar error after deleting a subproject, removed
"*compile project(path: ':MySubProject', configuration: 'android-endpoints')*"
in build.gradle
(dependencies) under Gradle Scripts
Yet another solution to get timezone offset:
TimeZone tz = TimeZone.getDefault();
String current_Time_Zone = getGmtOffsetString(tz.getRawOffset());
public static String getGmtOffsetString(int offsetMillis) {
int offsetMinutes = offsetMillis / 60000;
char sign = '+';
if (offsetMinutes < 0) {
sign = '-';
offsetMinutes = -offsetMinutes;
}
return String.format("GMT%c%02d:%02d", sign, offsetMinutes/60, offsetMinutes % 60);
}
I have the following approaches
object HelloV2 {
def main(args: Array[String]) {
//Efficient iteration with index in Scala
//Approach #1
var msg = "";
for (i <- args.indices)
{
msg+=(args(i));
}
var msg1="";
//Approach #2
for (i <- 0 until args.length)
{
msg1 += (args(i));
}
//Approach #3
var msg3=""
args.foreach{
arg =>
msg3 += (arg)
}
println("msg= " + msg);
println("msg1= " + msg1);
println("msg3= " + msg3);
}
}
For Project Explorer View:
1. Click on arrow(View Menu) in right corner
2. Select Customize View... item from menu
3. Uncheck *.resources checkbox under Filters tab
4. Click OK
--
Eclipse Juno
The accepted answer above is great if you are loading the image based on a button click, however if you are doing it in a new activity it freezes up the UI for a second or two. Looking around I found that a simple asynctask eliminated this problem.
To use an asynctask to add this class at the end of your activity:
private class DownloadImageTask extends AsyncTask<String, Void, Bitmap> {
ImageView bmImage;
public DownloadImageTask(ImageView bmImage) {
this.bmImage = bmImage;
}
protected Bitmap doInBackground(String... urls) {
String urldisplay = urls[0];
Bitmap mIcon11 = null;
try {
InputStream in = new java.net.URL(urldisplay).openStream();
mIcon11 = BitmapFactory.decodeStream(in);
} catch (Exception e) {
Log.e("Error", e.getMessage());
e.printStackTrace();
}
return mIcon11;
}
protected void onPostExecute(Bitmap result) {
bmImage.setImageBitmap(result);
}
}
And call from your onCreate() method using:
new DownloadImageTask((ImageView) findViewById(R.id.imageView1))
.execute(MY_URL_STRING);
Dont forget to add below permission in your manifest file
<uses-permission android:name="android.permission.INTERNET"/>
Works great for me. :)
This happens if you forgot to change your build settings to Simulator
. Unless you want to build to a device, in which case you should see the other answers.
Had a similar problem where we wanted to update from deprecated Http module to HttpClient in Angular 7. But the application is large and need to change res.json() in a lot of places. So I did this to have the new module with back support.
return this.http.get(this.BASE_URL + url)
.toPromise()
.then(data=>{
let res = {'results': JSON.stringify(data),
'json': ()=>{return data;}
};
return res;
})
.catch(error => {
return Promise.reject(error);
});
Adding a dummy "json" named function from the central place so that all other services can still execute successfully before updating them to accommodate a new way of response handling i.e. without "json" function.
It is also good idea to use supervisord or runit[1] for service management.
Just Try to do like this....
SortedDictionary<string, int> userCache = UserCache.getSortedUserValueCache();
// Add this code
if(userCache != null)
{
userListComboBox.DataSource = new BindingSource(userCache, null); // Key => null
userListComboBox.DisplayMember = "Key";
userListComboBox.ValueMember = "Value";
}
Is there any particular reason that you need to use find
? You can just use ls
to find files that match a pattern in a directory.
ls /dev/abc-*
If you do need to use find
, you can use the -maxdepth 1
switch to only apply to the specified directory.
Export should be specific about which version of GCC/G++ to use, because if user had multiple compiler version, it would not compile successfully.
export CC=path_of_gcc/gcc-version
export CXX=path_of_g++/g++-version
cmake path_of_project_contain_CMakeList.txt
make
In case project use C++11 this can be handled by using -std=C++-11
flag in CMakeList.txt
In TortoiseHg, right-click on the revision you want to modify. Choose Modify History->Import MQ. That will convert all the revisions up to and including the selected revision from Mercurial changesets into Mercurial Queue patches. Select the Patch you want to modify the message for, and it should automatically change the screen to the MQ editor. Edit the message which is in the middle of the screen, then click QRefresh. Finally, right click on the patch and choose Modify History->Finish Patch, which will convert it from a patch back into a change set.
Oh, this assumes that MQ is an active extension for TortoiseHG on this repository. If not, you should be able to click File->Settings, click Extensions, and click the mq checkbox. It should warn you that you have to close TortoiseHg before the extension is active, so close and reopen.
In example 3 you don't modify the array. In all other examples you modify either the contents or the internal array pointer. This is important when it comes to PHP arrays because of the semantics of the assignment operator.
The assignment operator for the arrays in PHP works more like a lazy clone. Assigning one variable to another that contains an array will clone the array, unlike most languages. However, the actual cloning will not be done unless it is needed. This means that the clone will take place only when either of the variables is modified (copy-on-write).
Here is an example:
$a = array(1,2,3);
$b = $a; // This is lazy cloning of $a. For the time
// being $a and $b point to the same internal
// data structure.
$a[] = 3; // Here $a changes, which triggers the actual
// cloning. From now on, $a and $b are two
// different data structures. The same would
// happen if there were a change in $b.
Coming back to your test cases, you can easily imagine that foreach
creates some kind of iterator with a reference to the array. This reference works exactly like the variable $b
in my example. However, the iterator along with the reference live only during the loop and then, they are both discarded. Now you can see that, in all cases but 3, the array is modified during the loop, while this extra reference is alive. This triggers a clone, and that explains what's going on here!
Here is an excellent article for another side effect of this copy-on-write behaviour: The PHP Ternary Operator: Fast or not?
Since API 14 you can use the function onTrimMemory()
and check for the flag TRIM_MEMORY_UI_HIDDEN
. This will tell you that your Application is going to the background.
So in your custom Application class you can write something like:
override fun onTrimMemory(level: Int) {
if (level == TRIM_MEMORY_UI_HIDDEN) {
// Application going to background, do something
}
}
For an in-depth study of this, I invite you to read this article: http://www.developerphil.com/no-you-can-not-override-the-home-button-but-you-dont-have-to/
If you want to access the string as a non-optional, you should use Ryan's Answer, but if you only care about the non-emptiness of the string, my preferred shorthand for this is
if stringA?.isEmpty == false {
...blah blah
}
Since ==
works fine with optional booleans, I think this leaves the code readable without obscuring the original intention.
If you want to check the opposite: if the string is nil
or ""
, I prefer to check both cases explicitly to show the correct intention:
if stringA == nil || stringA?.isEmpty == true {
...blah blah
}
In your xampppath\apache\conf\extra open file httpd-xampp.conf and find the below tag:
# Close XAMPP sites here
<LocationMatch "^/(?i:(?:xampp|licenses|phpmyadmin|webalizer|server-status|server-info))">
Order deny,allow
Deny from all
Allow from ::1 127.0.0.0/8
ErrorDocument 403 /error/HTTP_XAMPP_FORBIDDEN.html.var
</LocationMatch>
and add
"Allow from all"
after Allow from ::1 127.0.0.0/8 {line}
Restart xampp, and you are done.
In later versions of Xampp
...you can simply remove this part
#
# New XAMPP security concept
#
<LocationMatch "^/(?i:(?:xampp|security|licenses|phpmyadmin|webalizer|server-status|server-info))">
Require local
ErrorDocument 403 /error/XAMPP_FORBIDDEN.html.var
</LocationMatch>
from the same file and it should work over the local network.
You can use this function, but its will return false if website offline.
function isValidUrl($url) {
$url = parse_url($url);
if (!isset($url["host"])) return false;
return !(gethostbyname($url["host"]) == $url["host"]);
}
Why not just use atoi? For example:
char myarray[4] = {'-','1','2','3'};
int i = atoi(myarray);
printf("%d\n", i);
Gives me, as expected:
-123
Update: why not - the character array is not null terminated. Doh!
Wrap your Promise inside a function or it will start to do its job right away. Plus, you can pass parameters to the function:
var some_function = function(username, password)
{
return new Promise(function(resolve, reject)
{
/*stuff using username, password*/
if ( /* everything turned out fine */ )
{
resolve("Stuff worked!");
}
else
{
reject(Error("It broke"));
}
});
}
Then, use it:
some_module.some_function(username, password).then(function(uid)
{
// stuff
})
ES6:
const some_function = (username, password) =>
{
return new Promise((resolve, reject) =>
{
/*stuff using username, password*/
if ( /* everything turned out fine */ )
{
resolve("Stuff worked!");
}
else
{
reject(Error("It broke"));
}
});
};
Use:
some_module.some_function(username, password).then(uid =>
{
// stuff
});
What you are trying to do is simply not possible from an app (at least not on a non-rooted/non-modified device). The message "NFC tag type not supported" is displayed by the Android system (or more specifically the NFC system service) before and instead of dispatching the tag to your app. This means that the NFC system service filters MIFARE Classic tags and never notifies any app about them. Consequently, your app can't detect MIFARE Classic tags or circumvent that popup message.
On a rooted device, you may be able to bypass the message using either
the CSC (Consumer Software Customization) feature configuration files on the system partition (see /system/csc/. The NFC system service disables the popup and dispatches MIFARE Classic tags to apps if the CSC feature <CscFeature_NFC_EnableSecurityPromptPopup>
is set to any value but "mifareclassic" or "all". For instance, you could use:
<CscFeature_NFC_EnableSecurityPromptPopup>NONE</CscFeature_NFC_EnableSecurityPromptPopup>
You could add this entry to, for instance, the file "/system/csc/others.xml" (within the section <FeatureSet> ... </FeatureSet>
that already exists in that file).
Since, you asked for the Galaxy S6 (the question that you linked) as well: I have tested this method on the S4 when it came out. I have not verified if this still works in the latest firmware or on other devices (e.g. the S6).
This is pure guessing, but according to this (link no longer available), it seems that some apps (e.g. NXP TagInfo) are capable of detecting MIFARE Classic tags on affected Samsung devices since Android 4.4. This might mean that foreground apps are capable of bypassing that popup using the reader-mode API (see NfcAdapter.enableReaderMode
) possibly in combination with NfcAdapter.FLAG_READER_SKIP_NDEF_CHECK
.
Panama Jack Example not work for me - Give Fatal error: Call to undefined function build_unique_path(). I used this code - (more simple - my opinion) :
// options
$login_email = '[email protected]';
$login_pass = 'alabala4807';
$cookie_file_path = "/tmp/cookies.txt";
$LOGINURL = "http://alabala.com/index.php?route=account/login";
$agent = "Nokia-Communicator-WWW-Browser/2.0 (Geos 3.0 Nokia-9000i)";
// begin script
$ch = curl_init();
// extra headers
$headers[] = "Accept: */*";
$headers[] = "Connection: Keep-Alive";
// basic curl options for all requests
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_USERAGENT, $agent);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie_file_path);
curl_setopt($ch, CURLOPT_COOKIEJAR, $cookie_file_path);
// set first URL
curl_setopt($ch, CURLOPT_URL, $LOGINURL);
// execute session to get cookies and required form inputs
$content = curl_exec($ch);
// grab the hidden inputs from the form required to login
$fields = getFormFields($content);
$fields['email'] = $login_email;
$fields['password'] = $login_pass;
// set postfields using what we extracted from the form
$POSTFIELDS = http_build_query($fields);
// change URL to login URL
curl_setopt($ch, CURLOPT_URL, $LOGINURL);
// set post options
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $POSTFIELDS);
// perform login
$result = curl_exec($ch);
print $result;
function getFormFields($data)
{
if (preg_match('/()/is', $data, $matches)) {
$inputs = getInputs($matches[1]);
return $inputs;
} else {
die('didnt find login form');
}
}
function getInputs($form)
{
$inputs = array();
$elements = preg_match_all("/(]+>)/is", $form, $matches);
if ($elements > 0) {
for($i = 0;$i $el = preg_replace('/\s{2,}/', ' ', $matches[1][$i]);
if (preg_match('/name=(?:["\'])?([^"\'\s]*)/i', $el, $name)) {
$name = $name[1];
$value = '';
if (preg_match('/value=(?:["\'])?([^"\'\s]*)/i', $el, $value)) {
$value = $value[1];
}
$inputs[$name] = $value;
}
}
}
return $inputs;
}
$grab_url='http://grab.url/alabala';
//page with the content I want to grab
curl_setopt($ch, CURLOPT_URL, $grab_url);
//do stuff with the info with DomDocument() etc
$html = curl_exec($ch);
curl_close($ch);
var_dump($html);
die;
IMO, the provider is telling you to change the service endpoint (i.e. where to reach the web service), not the client endpoint (I don't understand what this could be). To change the service endpoint, you basically have two options.
The first option is to change the BindingProvider.ENDPOINT_ADDRESS_PROPERTY
property value of the BindingProvider
(every proxy implements javax.xml.ws.BindingProvider
interface):
...
EchoService service = new EchoService();
Echo port = service.getEchoPort();
/* Set NEW Endpoint Location */
String endpointURL = "http://NEW_ENDPOINT_URL";
BindingProvider bp = (BindingProvider)port;
bp.getRequestContext().put(BindingProvider.ENDPOINT_ADDRESS_PROPERTY, endpointURL);
System.out.println("Server said: " + echo.echo(args[0]));
...
The drawback is that this only works when the original WSDL is still accessible. Not recommended.
The second option is to get the endpoint URL from the WSDL.
...
URL newEndpoint = new URL("NEW_ENDPOINT_URL");
QName qname = new QName("http://ws.mycompany.tld","EchoService");
EchoService service = new EchoService(newEndpoint, qname);
Echo port = service.getEchoPort();
System.out.println("Server said: " + echo.echo(args[0]));
...
I would suggest that you start with some sort of placeholder, you may have this already, but its somewhere to append the div.
<div id="placeholder"></div>
Now, the idea is to dynamically create a new div, with your random id:
var rndId = randomString(8);
var div = document.createElement('div');
div.id = rndId
div.innerHTML = "Whatever you want the content of your div to be";
this can be apended to your placeholder as follows:
document.getElementById('placeholder').appendChild(div);
You can then use that in your jwplayer code:
jwplayer(rndId).setup(...);
Live example: http://jsfiddle.net/pNYZp/
Sidenote: Im pretty sure id's must start with an alpha character (ie, no numbers) - you might want to change your implementation of randomstring to enforce this rule. (ref)
What levi said about passing it into the constructor is correct, but you could also use an object.
I think what Veverke is trying to say is that you could easily use the delete
keyword on an object to achieve the same effect.
I think you're confused by the terminology; properties are components of the object that you can use as named indices (if you want to think of it that way).
Try something like this:
var obj = {
"bob": "dole",
"mr.": "peabody",
"darkwing": "duck"
};
Then, you could just do this:
delete obj["bob"];
The structure of the object would then be this:
{
"mr.": "peabody",
"darkwing": "duck"
}
Which has the same effect.
Your application has an AppCompat theme
<application
android:theme="@style/AppTheme">
But, you overwrote the Activity (which extends AppCompatActivity) with a theme that isn't descendant of an AppCompat theme
<activity android:name=".MainActivity"
android:theme="@android:style/Theme.NoTitleBar.Fullscreen" >
You could define your own fullscreen theme like so (notice AppCompat
in the parent=
)
<style name="AppFullScreenTheme" parent="Theme.AppCompat.Light.NoActionBar">
<item name="android:windowNoTitle">true</item>
<item name="android:windowActionBar">false</item>
<item name="android:windowFullscreen">true</item>
<item name="android:windowContentOverlay">@null</item>
</style>
Then set that on the Activity.
<activity android:name=".MainActivity"
android:theme="@style/AppFullScreenTheme" >
Note: There might be an AppCompat theme that's already full screen, but don't know immediately
One possibility is to delete to cookie you are looking for the expiration date from and rewrite it. Then you'll know the expiration date.
You may have Security-Enhanced Linux running, so add rule for that. I had permission 13 errors, even though permissions were set and user existed..
chcon -Rt httpd_sys_content_t /username/test/static
you can use searchField filter of angular.filter
JS:
$scope.users = [
{ first_name: 'Sharon', last_name: 'Melendez' },
{ first_name: 'Edmundo', last_name: 'Hepler' },
{ first_name: 'Marsha', last_name: 'Letourneau' }
];
HTML:
<input ng-model="search" placeholder="search by full name"/>
<th ng-repeat="user in users | searchField: 'first_name': 'last_name' | filter: search">
{{ user.first_name }} {{ user.last_name }}
</th>
<!-- so now you can search by full name -->
===== Swift 4.2 / Xcode 10 =====
let randomIntFrom0To10 = Int.random(in: 1..<10)
let randomFloat = Float.random(in: 0..<1)
// if you want to get a random element in an array
let greetings = ["hey", "hi", "hello", "hola"]
greetings.randomElement()
Under the hood Swift uses arc4random_buf
to get job done.
===== Swift 4.1 / Xcode 9 =====
arc4random()
returns a random number in the range of 0 to 4 294 967 295
drand48()
returns a random number in the range of 0.0 to 1.0
arc4random_uniform(N)
returns a random number in the range of 0 to N - 1
Examples:
arc4random() // => UInt32 = 2739058784
arc4random() // => UInt32 = 2672503239
arc4random() // => UInt32 = 3990537167
arc4random() // => UInt32 = 2516511476
arc4random() // => UInt32 = 3959558840
drand48() // => Double = 0.88642843322303122
drand48() // => Double = 0.015582849408328769
drand48() // => Double = 0.58409022031727176
drand48() // => Double = 0.15936862653180484
drand48() // => Double = 0.38371587480719427
arc4random_uniform(3) // => UInt32 = 0
arc4random_uniform(3) // => UInt32 = 1
arc4random_uniform(3) // => UInt32 = 0
arc4random_uniform(3) // => UInt32 = 1
arc4random_uniform(3) // => UInt32 = 2
arc4random_uniform() is recommended over constructions like arc4random() % upper_bound
as it avoids "modulo bias" when the upper bound is not a power of two.
The first one is easier, because, if you read it left to right you get: "If something AND somethingelse AND somethingelse THEN" , which is an easy to understand sentence. The second example reads "If something THEN if somethingelse THEN if something else THEN", which is clumsy.
Also, consider if you wanted to use some ORs in your clause - how would you do that in the second style?
Here is another, very manual solution. You can define the size of the axis and paddings are considered accordingly (including legend and tickmarks). Hope it is of use to somebody.
Example (axes size are the same!):
Code:
#==================================================
# Plot table
colmap = [(0,0,1) #blue
,(1,0,0) #red
,(0,1,0) #green
,(1,1,0) #yellow
,(1,0,1) #magenta
,(1,0.5,0.5) #pink
,(0.5,0.5,0.5) #gray
,(0.5,0,0) #brown
,(1,0.5,0) #orange
]
import matplotlib.pyplot as plt
import numpy as np
import collections
df = collections.OrderedDict()
df['labels'] = ['GWP100a\n[kgCO2eq]\n\nasedf\nasdf\nadfs','human\n[pts]','ressource\n[pts]']
df['all-petroleum long name'] = [3,5,2]
df['all-electric'] = [5.5, 1, 3]
df['HEV'] = [3.5, 2, 1]
df['PHEV'] = [3.5, 2, 1]
numLabels = len(df.values()[0])
numItems = len(df)-1
posX = np.arange(numLabels)+1
width = 1.0/(numItems+1)
fig = plt.figure(figsize=(2,2))
ax = fig.add_subplot(111)
for iiItem in range(1,numItems+1):
ax.bar(posX+(iiItem-1)*width, df.values()[iiItem], width, color=colmap[iiItem-1], label=df.keys()[iiItem])
ax.set(xticks=posX+width*(0.5*numItems), xticklabels=df['labels'])
#--------------------------------------------------
# Change padding and margins, insert legend
fig.tight_layout() #tight margins
leg = ax.legend(loc='upper left', bbox_to_anchor=(1.02, 1), borderaxespad=0)
plt.draw() #to know size of legend
padLeft = ax.get_position().x0 * fig.get_size_inches()[0]
padBottom = ax.get_position().y0 * fig.get_size_inches()[1]
padTop = ( 1 - ax.get_position().y0 - ax.get_position().height ) * fig.get_size_inches()[1]
padRight = ( 1 - ax.get_position().x0 - ax.get_position().width ) * fig.get_size_inches()[0]
dpi = fig.get_dpi()
padLegend = ax.get_legend().get_frame().get_width() / dpi
widthAx = 3 #inches
heightAx = 3 #inches
widthTot = widthAx+padLeft+padRight+padLegend
heightTot = heightAx+padTop+padBottom
# resize ipython window (optional)
posScreenX = 1366/2-10 #pixel
posScreenY = 0 #pixel
canvasPadding = 6 #pixel
canvasBottom = 40 #pixel
ipythonWindowSize = '{0}x{1}+{2}+{3}'.format(int(round(widthTot*dpi))+2*canvasPadding
,int(round(heightTot*dpi))+2*canvasPadding+canvasBottom
,posScreenX,posScreenY)
fig.canvas._tkcanvas.master.geometry(ipythonWindowSize)
plt.draw() #to resize ipython window. Has to be done BEFORE figure resizing!
# set figure size and ax position
fig.set_size_inches(widthTot,heightTot)
ax.set_position([padLeft/widthTot, padBottom/heightTot, widthAx/widthTot, heightAx/heightTot])
plt.draw()
plt.show()
#--------------------------------------------------
#==================================================
This will remove all of the rows belonging to the body, thus keeping the headers and body intact:
$("#tableLoanInfos tbody tr").remove();
I've used this much simpler solution:
setOnScrollListener( new OnScrollListener()
{
private int mInitialScroll = 0;
@Override
public void onScroll(AbsListView view, int firstVisibleItem,
int visibleItemCount, int totalItemCount)
{
int scrolledOffset = computeVerticalScrollOffset();
boolean scrollUp = scrolledOffset > mInitialScroll;
mInitialScroll = scrolledOffset;
}
@Override
public void onScrollStateChanged(AbsListView view, int scrollState) {
}
}
Once gdb
starts, you can run the program using "r args".
So if you are running your code by:
$ executablefile arg1 arg2 arg3
Debug it on gdb
by:
$ gdb executablefile
(gdb) r arg1 arg2 arg3
In JavaScript functions are objects.
document.getElementById('foo').onclick = function(){
prompt('Hello world');
}
You don't need anything special for adding paramaters. Just like you had it.
Route::get('groups/(:any)', array('as' => 'group', 'uses' => 'groups@show'));
class Groups_Controller extends Base_Controller {
public $restful = true;
public function get_show($groupID) {
return 'I am group id ' . $groupID;
}
}
I would use a Canvas that I add to the JPanel, and draw the image on the Canvas. But Canvas is a quite heavy object, sine it is from awt.
Using Nested Scroll View instead of Scroll View solved my problem
<LinearLayout> <!--Main Layout -->
<android.support.v4.widget.NestedScrollView>
<LinearLayout > <!--Nested Scoll View enclosing Layout -->`
<View > <!-- upper content -->
<RecyclerView >
</LinearLayout >
</android.support.v4.widget.NestedScrollView>
</LinearLayout>
In order to load local images to your React.js application, you need to add require
parameter in media sections like or Image tags, as below:
image={require('./../uploads/temp.jpg')}
Actually awk
has a feature called 'Input Field Separator Variable' link. This is how to use it. It's not really an array, but it uses the internal $ variables. For splitting a simple string it is easier.
echo "12|23|11" | awk 'BEGIN {FS="|";} { print $1, $2, $3 }'
Concision counts: I prefer window.location = "?single";
or window.location += "?single";
$t1 = strtotime( '2006-04-14 11:30:00' );
$t2 = strtotime( '2006-04-12 12:30:00' );
$diff = $t1 - $t2;
$hours = $diff / ( 60 * 60 );
For those of us using non-ISO standard date formats, like civilian vernacular 01/01/2001 (mm/dd/YYYY), including time in a 12hour date format with am/pm marks, the following function will return a valid Date object:
function convertDate(date) {
// # valid js Date and time object format (YYYY-MM-DDTHH:MM:SS)
var dateTimeParts = date.split(' ');
// # this assumes time format has NO SPACE between time and am/pm marks.
if (dateTimeParts[1].indexOf(' ') == -1 && dateTimeParts[2] === undefined) {
var theTime = dateTimeParts[1];
// # strip out all except numbers and colon
var ampm = theTime.replace(/[0-9:]/g, '');
// # strip out all except letters (for AM/PM)
var time = theTime.replace(/[[^a-zA-Z]/g, '');
if (ampm == 'pm') {
time = time.split(':');
// # if time is 12:00, don't add 12
if (time[0] == 12) {
time = parseInt(time[0]) + ':' + time[1] + ':00';
} else {
time = parseInt(time[0]) + 12 + ':' + time[1] + ':00';
}
} else { // if AM
time = time.split(':');
// # if AM is less than 10 o'clock, add leading zero
if (time[0] < 10) {
time = '0' + time[0] + ':' + time[1] + ':00';
} else {
time = time[0] + ':' + time[1] + ':00';
}
}
}
// # create a new date object from only the date part
var dateObj = new Date(dateTimeParts[0]);
// # add leading zero to date of the month if less than 10
var dayOfMonth = (dateObj.getDate() < 10 ? ("0" + dateObj.getDate()) : dateObj.getDate());
// # parse each date object part and put all parts together
var yearMoDay = dateObj.getFullYear() + '-' + (dateObj.getMonth() + 1) + '-' + dayOfMonth;
// # finally combine re-formatted date and re-formatted time!
var date = new Date(yearMoDay + 'T' + time);
return date;
}
Usage:
date = convertDate('11/15/2016 2:00pm');
To illustrate the need for move semantics, let's consider this example without move semantics:
Here's a function that takes an object of type T
and returns an object of the same type T
:
T f(T o) { return o; }
//^^^ new object constructed
The above function uses call by value which means that when this function is called an object must be constructed to be used by the function.
Because the function also returns by value, another new object is constructed for the return value:
T b = f(a);
//^ new object constructed
Two new objects have been constructed, one of which is a temporary object that's only used for the duration of the function.
When the new object is created from the return value, the copy constructor is called to copy the contents of the temporary object to the new object b. After the function completes, the temporary object used in the function goes out of scope and is destroyed.
Now, let's consider what a copy constructor does.
It must first initialize the object, then copy all the relevant data from the old object to the new one.
Depending on the class, maybe its a container with very much data, then that could represent much time and memory usage
// Copy constructor
T::T(T &old) {
copy_data(m_a, old.m_a);
copy_data(m_b, old.m_b);
copy_data(m_c, old.m_c);
}
With move semantics it's now possible to make most of this work less unpleasant by simply moving the data rather than copying.
// Move constructor
T::T(T &&old) noexcept {
m_a = std::move(old.m_a);
m_b = std::move(old.m_b);
m_c = std::move(old.m_c);
}
Moving the data involves re-associating the data with the new object. And no copy takes place at all.
This is accomplished with an rvalue
reference.
An rvalue
reference works pretty much like an lvalue
reference with one important difference:
an rvalue reference can be moved and an lvalue cannot.
From cppreference.com:
To make strong exception guarantee possible, user-defined move constructors should not throw exceptions. In fact, standard containers typically rely on std::move_if_noexcept to choose between move and copy when container elements need to be relocated. If both copy and move constructors are provided, overload resolution selects the move constructor if the argument is an rvalue (either a prvalue such as a nameless temporary or an xvalue such as the result of std::move), and selects the copy constructor if the argument is an lvalue (named object or a function/operator returning lvalue reference). If only the copy constructor is provided, all argument categories select it (as long as it takes a reference to const, since rvalues can bind to const references), which makes copying the fallback for moving, when moving is unavailable. In many situations, move constructors are optimized out even if they would produce observable side-effects, see copy elision. A constructor is called a 'move constructor' when it takes an rvalue reference as a parameter. It is not obligated to move anything, the class is not required to have a resource to be moved and a 'move constructor' may not be able to move a resource as in the allowable (but maybe not sensible) case where the parameter is a const rvalue reference (const T&&).
If you want the output to be
array([1.6e-01, 9.9e-01, 3.6e-04])
the problem is not really a missing feature of NumPy, but rather that this sort of rounding is not a standard thing to do. You can make your own rounding function which achieves this like so:
def my_round(value, N):
exponent = np.ceil(np.log10(value))
return 10**exponent*np.round(value*10**(-exponent), N)
For a general solution handling 0
and negative values as well, you can do something like this:
def my_round(value, N):
value = np.asarray(value).copy()
zero_mask = (value == 0)
value[zero_mask] = 1.0
sign_mask = (value < 0)
value[sign_mask] *= -1
exponent = np.ceil(np.log10(value))
result = 10**exponent*np.round(value*10**(-exponent), N)
result[sign_mask] *= -1
result[zero_mask] = 0.0
return result
About promise composition vs. Rxjs, as this is a frequently asked question, you can refer to a number of previously asked questions on SO, among which :
Basically, flatMap
is the equivalent of Promise.then
.
For your second question, do you want to replay values already emitted, or do you want to process new values as they arrive? In the first case, check the publishReplay
operator. In the second case, standard subscription is enough. However you might need to be aware of the cold. vs. hot dichotomy depending on your source (cf. Hot and Cold observables : are there 'hot' and 'cold' operators? for an illustrated explanation of the concept)
Render props is most accurate approach to this problem. Instead of passing the child component to parent component as children props, let parent render child component manually. Render is built-in props in react, which takes function parameter. In this function you can let parent component render whatever you want with custom parameters. Basically it does the same thing as child props but it is more customizable.
class Child extends React.Component {
render() {
return <div className="Child">
Child
<p onClick={this.props.doSomething}>Click me</p>
{this.props.a}
</div>;
}
}
class Parent extends React.Component {
doSomething(){
alert("Parent talks");
}
render() {
return <div className="Parent">
Parent
{this.props.render({
anythingToPassChildren:1,
doSomething: this.doSomething})}
</div>;
}
}
class Application extends React.Component {
render() {
return <div>
<Parent render={
props => <Child {...props} />
}/>
</div>;
}
}
As suggested, you can use some 3rd party library, or do it manually (which is not that much work), but the simplest and the most flexible is to perhaps use the built-in functionality in .NET. For more see:
System.Drawing.Image.PropertyItems Property
I say "it’s the most flexible" because .NET does not try to interpret or coalesce the data in any way. For each EXIF you basically get an array of bytes. This may be good or bad depending on how much control you actually want.
Also, I should point out that the property list does not in fact directly correspond to the EXIF values. EXIF itself is stored in multiple tables with overlapping ID’s, but .NET puts everything in one list and redefines ID’s of some items. But as long as you don’t care about the precise EXIF ID’s, you should be fine with the .NET mapping.
Edit: It's possible to do it without loading the full image following this answer: https://stackoverflow.com/a/552642/2097240
Dan Tello fix worked well for me.
One additional issue I found with IE8 was that if the PNG was held in a DIV with smaller CSS width or height dimensions than the PNG then the black edge prob was re-triggered.
Correcting the width and height CSS or removing them altogether fixed.
For those who are using .NET WebForms a full page submit may not be desired. Instead, use the same onchange
idea to have javascript click a hidden button (e.g. <asp:Button...) and the hidden button can take of the rest. Make sure you are doing a display: none;
on the button and not Visible="false"
.
Here's the nearly shortest possible solution to your question. The solution works in python 3.x. For python 2.x change the import
to Tkinter
rather than tkinter
(the difference being the capitalization):
import tkinter as tk
#import Tkinter as tk # for python 2
def create_window():
window = tk.Toplevel(root)
root = tk.Tk()
b = tk.Button(root, text="Create new window", command=create_window)
b.pack()
root.mainloop()
This is definitely not what I recommend as an example of good coding style, but it illustrates the basic concepts: a button with a command, and a function that creates a window.
Definitely avoid using eval
to do something like this, or you will open yourself to XSS (Cross-Site Scripting) vulnerabilities.
For example, if you were to use the eval
solutions proposed here, a nefarious user could send a link to their victim that looked like this:
http://yoursite.com/foo.html?func=function(){alert('Im%20In%20Teh%20Codez');}
And their javascript, not yours, would get executed. This code could do something far worse than just pop up an alert of course; it could steal cookies, send requests to your application, etc.
So, make sure you never eval
untrusted code that comes in from user input (and anything on the query string id considered user input). You could take user input as a key that will point to your function, but make sure that you don't execute anything if the string given doesn't match a key in your object. For example:
// set up the possible functions:
var myFuncs = {
func1: function () { alert('Function 1'); },
func2: function () { alert('Function 2'); },
func3: function () { alert('Function 3'); },
func4: function () { alert('Function 4'); },
func5: function () { alert('Function 5'); }
};
// execute the one specified in the 'funcToRun' variable:
myFuncs[funcToRun]();
This will fail if the funcToRun
variable doesn't point to anything in the myFuncs
object, but it won't execute any code.
I find that if I try things that others say do not work, it's how I learn the most.
<p> </p>
<p>README.txt</p>
<p> </p>
<div id="list">
<p><iframe src="README.txt" frameborder="0" height="400"
width="95%"></iframe></p>
</div>
This worked for me. I used the yellow background-color that I set in the stylesheet.
#list p {
font: arial;
font-size: 14px;
background-color: yellow ;
}
Using the following imports:
import {Observable} from 'rxjs/Observable';
import 'rxjs/add/observable/of';
import 'rxjs/add/operator/delay';
Try this:
let fakeResponse = [1,2,3];
let delayedObservable = Observable.of(fakeResponse).delay(5000);
delayedObservable.subscribe(data => console.log(data));
UPDATE: RXJS 6
The above solution doesn't really work anymore in newer versions of RXJS (and of angular for example).
So the scenario is that I have an array of items to check with an API with. The API only accepts a single item, and I do not want to kill the API by sending all requests at once. So I need a timed release of items on the Observable stream with a small delay in between.
Use the following imports:
import { from, of } from 'rxjs';
import { delay } from 'rxjs/internal/operators';
import { concatMap } from 'rxjs/internal/operators';
Then use the following code:
const myArray = [1,2,3,4];
from(myArray).pipe(
concatMap( item => of(item).pipe ( delay( 1000 ) ))
).subscribe ( timedItem => {
console.log(timedItem)
});
It basically creates a new 'delayed' Observable for every item in your array. There are probably many other ways of doing it, but this worked fine for me, and complies with the 'new' RXJS format.
Crossframe-Scripting is not possible when the two frames have different domains -> Security.
See this: http://javascript.about.com/od/reference/a/frame3.htm
Now to answer your question: there is no solution or work around, you simply should check your website-design why there must be two frames from different domains that changes the url of the other one.
As others have noted above, one way to do this is to convert your array to a string and then split the string inside SQL Server.
As of SQL Server 2016, there's a built-in way to split strings called
STRING_SPLIT()
It returns a set of rows that you can insert into your temp table (or real table).
DECLARE @str varchar(200)
SET @str = "123;456;789;246;22;33;44;55;66"
SELECT value FROM STRING_SPLIT(@str, ';')
would yield:
value ----- 123 456 789 246 22 33 44 55 66
If you want to get fancier:
DECLARE @tt TABLE (
thenumber int
)
DECLARE @str varchar(200)
SET @str = "123;456;789;246;22;33;44;55;66"
INSERT INTO @tt
SELECT value FROM STRING_SPLIT(@str, ';')
SELECT * FROM @tt
ORDER BY thenumber
would give you the same results as above (except the column name is "thenumber"), but sorted. You can use the table variable like any other table, so you can easily join it with other tables in the DB if you want.
Note that your SQL Server install has to be at compatibility level 130 or higher in order for the STRING_SPLIT()
function to be recognized. You can check your compatibility level with the following query:
SELECT compatibility_level
FROM sys.databases WHERE name = 'yourdatabasename';
Most languages (including C#) have a "join" function you can use to create a string from an array.
int[] myarray = {22, 33, 44};
string sqlparam = string.Join(";", myarray);
Then you pass sqlparam
as your parameter to the stored procedure above.
The IF statement has these forms in PL/SQL
:
IF THEN
IF THEN ELSE
IF THEN ELSIF
You have used elseif
which in terms of PL/SQL is wrong. That need to be replaced with ELSIF
.
So your code should appear like this.
declare
var_number number;
begin
var_number := 10;
if var_number > 100 then
dbms_output.put_line(var_number ||' is greater than 100');
--elseif should be replaced with elsif
elsif var_number < 100 then
dbms_output.put_line(var_number ||' is less than 100');
else
dbms_output.put_line(var_number ||' is equal to 100');
end if;
end;
This can also happen when the log file is restricted in size.
Right click database in Object Explorer
Select Properties
Select Files
On the log line, click the ellipsis in the Autogrowth / Maxsize column
Change/verify Maximum File Size is Unlimited.
After chaning to unlimited, database came back to life.
The following is slower than the approaches timed here, but we can compute the extra column based on the contents of more than one column, and more than two values can be computed for the extra column.
Simple example using just the "Set" column:
def set_color(row):
if row["Set"] == "Z":
return "red"
else:
return "green"
df = df.assign(color=df.apply(set_color, axis=1))
print(df)
Set Type color
0 Z A red
1 Z B red
2 X B green
3 Y C green
Example with more colours and more columns taken into account:
def set_color(row):
if row["Set"] == "Z":
return "red"
elif row["Type"] == "C":
return "blue"
else:
return "green"
df = df.assign(color=df.apply(set_color, axis=1))
print(df)
Set Type color
0 Z A red
1 Z B red
2 X B green
3 Y C blue
It is also possible to use plydata to do this kind of things (this seems even slower than using assign
and apply
, though).
from plydata import define, if_else
Simple if_else
:
df = define(df, color=if_else('Set=="Z"', '"red"', '"green"'))
print(df)
Set Type color
0 Z A red
1 Z B red
2 X B green
3 Y C green
Nested if_else
:
df = define(df, color=if_else(
'Set=="Z"',
'"red"',
if_else('Type=="C"', '"green"', '"blue"')))
print(df)
Set Type color
0 Z A red
1 Z B red
2 X B blue
3 Y C green
1.this is my answer for your problem.
.ModalCarrot::before {
content:'';
background: url('blackCarrot.png'); /*url of image*/
height: 16px; /*height of image*/
width: 33px; /*width of image*/
position: absolute;
}
Instead of retrieving the file content as a single string, it can be handy to store the content as a list of all lines the file comprises:
with open('Path/to/file', 'r') as content_file:
content_list = content_file.read().strip().split("\n")
As can be seen, one needs to add the concatenated methods .strip().split("\n")
to the main answer in this thread.
Here, .strip()
just removes whitespace and newline characters at the endings of the entire file string,
and .split("\n")
produces the actual list via splitting the entire file string at every newline character \n.
Moreover, this way the entire file content can be stored in a variable, which might be desired in some cases, instead of looping over the file line by line as pointed out in this previous answer.
.container {_x000D_
padding: 10px;_x000D_
}_x000D_
.parent {_x000D_
width: 100%;_x000D_
background: #7b7b7b;_x000D_
display: flex;_x000D_
justify-content: space-between;_x000D_
height: 4px;_x000D_
}_x000D_
.child {_x000D_
color: #fff;_x000D_
background: green;_x000D_
padding: 10px 10px;_x000D_
border-radius: 50%;_x000D_
position: relative;_x000D_
top: -8px;_x000D_
}
_x000D_
<div class="container">_x000D_
<div class="parent">_x000D_
<span class="child"></span>_x000D_
<span class="child"></span>_x000D_
<span class="child"></span>_x000D_
<span class="child"></span>_x000D_
<span class="child"></span>_x000D_
<span class="child"></span>_x000D_
<span class="child"></span>_x000D_
<span class="child"></span>_x000D_
<span class="child"></span>_x000D_
<span class="child"></span>_x000D_
</div>_x000D_
</div>
_x000D_
$('select').on('change', function (e) {
var optionSelected = $("option:selected", this);
var valueSelected = this.value;
....
});
Actually if you downloaded the icons pack from the android web site, you will see that you have one folder per resolution named drawable-mdpi etc. Copy all folders into the res (not the drawable) folder in Android Studio. This will automatically make all the different resolution of the icon available.
Also a nice way of doing this :)
Map<Integer,JsonObject> requestOutput = getRequestOutput(client,post);
int statusCode = requestOutput.keySet().stream().findFirst().orElseThrow(() -> new RuntimeException("Empty"));
I guess you are using Rails 4. If so, the needed parameters must be marked as required.
You might want to do it like this:
class UsersController < ApplicationController
def create
@user = User.new(user_params)
# ...
end
private
def user_params
params.require(:user).permit(:username, :email, :password, :salt, :encrypted_password)
end
end
https://github.com/wongatech/angular-http-loader is a good project for this.
Example here http://wongatech.github.io/angular-http-loader/
The code below shows a template example/loader.tpl.html when a request is happening.
<div ng-http-loader template="example/loader.tpl.html"></div>
Hi I found the easiest way to do this.
Done!
I would encourage you to see this youtube video which demonstrates the difference between C# bin and obj folders and also explains how we get the benefit of incremental/conditional compilation.
C# compilation is a two-step process, see the below diagram for more details:
If you compare both bin and obj directory you will find greater number of files in the "obj" directory as it has individual compiled code files while "bin" has a single unit.
Before you open the connection to your database, execute this piece of code for each of your poco classes:
// Section
SqlMapper.SetTypeMap(typeof(Section), new CustomPropertyTypeMap(
typeof(Section), (type, columnName) => type.GetProperties().FirstOrDefault(prop =>
prop.GetCustomAttributes(false).OfType<ColumnAttribute>().Any(attr => attr.Name == columnName))));
Then add the data annotations to your poco classes like this:
public class Section
{
[Column("db_column_name1")] // Side note: if you create aliases, then they would match this.
public int Id { get; set; }
[Column("db_column_name2")]
public string Title { get; set; }
}
After that, you are all set. Just make a query call, something like:
using (var sqlConnection = new SqlConnection("your_connection_string"))
{
var sqlStatement = "SELECT " +
"db_column_name1, " +
"db_column_name2 " +
"FROM your_table";
return sqlConnection.Query<Section>(sqlStatement).AsList();
}
You can use the by()
function:
by(dataFrame, seq_len(nrow(dataFrame)), function(row) dostuff)
But iterating over the rows directly like this is rarely what you want to; you should try to vectorize instead. Can I ask what the actual work in the loop is doing?
In case you want to change the status code because of an exception, with JAX-RS 2.0 you can implement an ExceptionMapper like this. This handles this kind of exception for the whole app.
@Provider
public class UnauthorizedExceptionMapper implements ExceptionMapper<EJBAccessException> {
@Override
public Response toResponse(EJBAccessException exception) {
return Response.status(Response.Status.UNAUTHORIZED.getStatusCode()).build();
}
}
Just do (int)myLongValue
. It'll do exactly what you want (discarding MSBs and taking LSBs) in unchecked
context (which is the compiler default). It'll throw OverflowException
in checked
context if the value doesn't fit in an int
:
int myIntValue = unchecked((int)myLongValue);
The standard option grep -l
(that is a lowercase L) could do this.
From the Unix standard:
-l
(The letter ell.) Write only the names of files containing selected
lines to standard output. Pathnames are written once per file searched.
If the standard input is searched, a pathname of (standard input) will
be written, in the POSIX locale. In other locales, standard input may be
replaced by something more appropriate in those locales.
You also do not need -H
in this case.
Following changes you have to make that's it(change architecture into armv7 and remove others) :-
The correct answer is the following:
import numpy
numpy.shape(a)
def hi():
bye = 5
return bye
print hi()
You can accept the license agreement by launching Android Studio, then going to:
Help > Check for Updates...
When you are installing updates, it'll ask you to accept the license agreement. Accept the license agreement and install the updates, and you are all set.
FragmentPagerAdapter: the fragment of each page the user visits will be stored in memory, although the view will be destroyed. So when the page is visible again, the view will be recreated but the fragment instance is not recreated. This can result in a significant amount of memory being used. FragmentPagerAdapter should be used when we need to store the whole fragment in memory. FragmentPagerAdapter calls detach(Fragment) on the transaction instead of remove(Fragment).
FragmentStatePagerAdapter: the fragment instance is destroyed when it is not visible to the User, except the saved state of the fragment. This results in using only a small amount of Memory and can be useful for handling larger data sets. Should be used when we have to use dynamic fragments, like fragments with widgets, as their data could be stored in the savedInstanceState.Also it won’t affect the performance even if there are large number of fragments.
I solved this problem by using the the data-cache="false" attribute in the page div on the pages I wanted refreshed.
<div data-role="page" data-cache="false">
/*content goes here*/
</div>
In my case it was my shopping cart. If a customer added an item to their cart and then continued shopping and then added another item to their cart the cart page would not show the new item. Unless they refreshed the page. Setting data-cache to false instructs JQM not to cache that page as far as I understand.
Hope this helps others in the future.
press Ctrl + H . Then choose "File Search" tab.
additional search options
search for resources: Ctrl + Shift + R
search for Java types: Ctrl + Shift + T
Right click the installer and choose "Run as administrator". I suspect it needs administrator account to download and install Node JS during installation.
In general if you are using the Package Manager Console the right way to remove a specific Migration is by referencing the name of the migration
Update-Database -Migration {Name of Migration} -Context {context}
Another way to remove the last migration you have applied according to the docs is by using the command:
dotnet ef migrations remove
This command should be executed from the developer command prompt (how to open command prompt) inside your solution directory.
For example if your application is inside name "Application" and is in the folder c:\Projects. Then your path should be:
C:\Projects\Application
When you use recv
in connection with select
if the socket is ready to be read from but there is no data to read that means the client has closed the connection.
Here is some code that handles this, also note the exception that is thrown when recv
is called a second time in the while loop. If there is nothing left to read this exception will be thrown it doesn't mean the client has closed the connection :
def listenToSockets(self):
while True:
changed_sockets = self.currentSockets
ready_to_read, ready_to_write, in_error = select.select(changed_sockets, [], [], 0.1)
for s in ready_to_read:
if s == self.serverSocket:
self.acceptNewConnection(s)
else:
self.readDataFromSocket(s)
And the function that receives the data :
def readDataFromSocket(self, socket):
data = ''
buffer = ''
try:
while True:
data = socket.recv(4096)
if not data:
break
buffer += data
except error, (errorCode,message):
# error 10035 is no data available, it is non-fatal
if errorCode != 10035:
print 'socket.error - ('+str(errorCode)+') ' + message
if data:
print 'received '+ buffer
else:
print 'disconnected'
All of the above answers are wrong because they fail to handle the OPTIONS preflight request, the solution is to override the mux router's interface. See AngularJS $http get request failed with custom header (alllowed in CORS)
func main() {
r := mux.NewRouter()
r.HandleFunc("/save", saveHandler)
http.Handle("/", &MyServer{r})
http.ListenAndServe(":8080", nil);
}
type MyServer struct {
r *mux.Router
}
func (s *MyServer) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
if origin := req.Header.Get("Origin"); origin != "" {
rw.Header().Set("Access-Control-Allow-Origin", origin)
rw.Header().Set("Access-Control-Allow-Methods", "POST, GET, OPTIONS, PUT, DELETE")
rw.Header().Set("Access-Control-Allow-Headers",
"Accept, Content-Type, Content-Length, Accept-Encoding, X-CSRF-Token, Authorization")
}
// Stop here if its Preflighted OPTIONS request
if req.Method == "OPTIONS" {
return
}
// Lets Gorilla work
s.r.ServeHTTP(rw, req)
}
You can do that using the SimpleDateFormat
class.
SimpleDateFormat formatter=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String dates=formatter.format(mydate);
//mydate is your date object
Format won't be completely the same, but it does write the data to a text file, and R will be able to reread it using dget
when you want to retrieve it again as a list.
dput(mylist, "mylist.txt")
Got a similar error, fixed with removing all records (in my case directory journals
, and file mongo.lock...
), after that check port with sudo lsof -i:27017
, if smth running on it kill <PID of the process>
, and try to run ./mongod
again
There are ways to redirect events to the control but don't expect to be able to easily fire events to the fire control yourself as the browsers will try to block that for (good) security reasons.
If you only need the file dialog to show up when a user clicks something, let's say because you want better looking file upload buttons, then you might want to take a look at what Shaun Inman came up with.
I've been able to achieve keyboard triggering with creative shifting of focus in and out of the control between keydown, keypress & keyup events. YMMV.
My sincere advice is to leave this the alone, because this is a world of browser-incompatibility-pain. Minor browser updates may also block tricks without warning and you may have to keep reinventing hacks to keep it working.
In JavaScript, null
is a special singleton object which is helpful for signaling "no value". You can test for it by comparison and, as usual in JavaScript, it's a good practice to use the ===
operator to avoid confusing type coercion:
var a = null;
alert(a === null); // true
As @rynah mentions, "undefined" is a bit confusing in JavaScript. However, it's always safe to test if the typeof(x)
is the string "undefined", even if "x" is not a declared variable:
alert(typeof(x) === 'undefined'); // true
Also, variables can have the "undefined value" if they are not initialized:
var y;
alert(typeof(y) === 'undefined'); // true
Putting it all together, your check should look like this:
if ((typeof(data) !== 'undefined') && (data !== null)) {
// ...
However, since the variable "data" is always defined since it is a formal function parameter, using the "typeof" operator is unnecessary and you can safely compare directly with the "undefined value".
function(data) {
if ((data !== undefined) && (data !== null)) {
// ...
This snippet amounts to saying "if the function was called with an argument which is defined and is not null..."
You could use super(ChildClass, self).__init__()
class BaseClass(object):
def __init__(self, *args, **kwargs):
pass
class ChildClass(BaseClass):
def __init__(self, *args, **kwargs):
super(ChildClass, self).__init__(*args, **kwargs)
Your indentation is incorrect, here's the modified code:
class Car(object):
condition = "new"
def __init__(self, model, color, mpg):
self.model = model
self.color = color
self.mpg = mpg
class ElectricCar(Car):
def __init__(self, battery_type, model, color, mpg):
self.battery_type=battery_type
super(ElectricCar, self).__init__(model, color, mpg)
car = ElectricCar('battery', 'ford', 'golden', 10)
print car.__dict__
Here's the output:
{'color': 'golden', 'mpg': 10, 'model': 'ford', 'battery_type': 'battery'}
mkdirs()
will create the specified directory path in its entirety where mkdir()
will only create the bottom most directory, failing if it can't find the parent directory of the directory it is trying to create.
In other words mkdir()
is like mkdir
and mkdirs()
is like mkdir -p
.
For example, imagine we have an empty /tmp
directory. The following code
new File("/tmp/one/two/three").mkdirs();
would create the following directories:
/tmp/one
/tmp/one/two
/tmp/one/two/three
Where this code:
new File("/tmp/one/two/three").mkdir();
would not create any directories - as it wouldn't find /tmp/one/two
- and would return false
.
I have used csvtojson library for converting csv string to json array.
It has variety of function which can help you to convert to JSON.
It also supports reading from file and file streaming.
Be careful while parsing the csv which can contain the comma(,) or any other delimiter . For removing the delimiter please see my answer here.
'JavaType' works !!
I was trying to unmarshall (deserialize) a List in json String to ArrayList java Objects and was struggling to find a solution since days.
Below is the code that finally gave me solution.
Code:
JsonMarshallerUnmarshaller<T> {
T targetClass;
public ArrayList<T> unmarshal(String jsonString) {
ObjectMapper mapper = new ObjectMapper();
AnnotationIntrospector introspector = new JacksonAnnotationIntrospector();
mapper.getDeserializationConfig()
.withAnnotationIntrospector(introspector);
mapper.getSerializationConfig()
.withAnnotationIntrospector(introspector);
JavaType type = mapper.getTypeFactory().
constructCollectionType(
ArrayList.class,
targetclass.getClass());
try {
Class c1 = this.targetclass.getClass();
Class c2 = this.targetclass1.getClass();
ArrayList<T> temp = (ArrayList<T>)
mapper.readValue(jsonString, type);
return temp ;
} catch (JsonParseException e) {
e.printStackTrace();
} catch (JsonMappingException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return null ;
}
}
This is the official Microsoft answer from the MS Connect forums. I am copying the relevant text below :-
When targeting .NET 4.5 Unobtrusive Validation is enabled by default. You need to have jQuery in your project and have something like this in Global.asax to register jQuery properly:
ScriptManager.ScriptResourceMapping.AddDefinition("jquery",
new ScriptResourceDefinition {
Path = "~/scripts/jquery-1.4.1.min.js",
DebugPath = "~/scripts/jquery-1.4.1.js",
CdnPath = "http://ajax.microsoft.com/ajax/jQuery/jquery-1.4.1.min.js",
CdnDebugPath = "http://ajax.microsoft.com/ajax/jQuery/jquery-1.4.1.js"
});
Replacing the version of jQuery with the version you are using.
You can also disable this new feature in web.config by removing the following line:
<add key="ValidationSettings:UnobtrusiveValidationMode" value="WebForms" />
The other answers regarding the use of nvl() are correct however none seem to address a more salient point:
Should you even have NULLs in this column?
Do they have a meaning other than 0?
This seems like a case where you should have a NOT NULL DEFAULT 0 on th ecolumn
You need to use a delegated event handler, as the #add
elements dynamically appended won't have the click event bound to them. Try this:
$("#buildyourform").on('click', "#add", function() {
// your code...
});
Also, you can make your HTML strings easier to read by mixing line quotes:
var fieldWrapper = $('<div class="fieldwrapper" name="field' + intId + '" id="field' + intId + '"/>');
Or even supplying the attributes as an object:
var fieldWrapper = $('<div></div>', {
'class': 'fieldwrapper',
'name': 'field' + intId,
'id': 'field' + intId
});
There are several ways to do this, lets see them one by one:
const myObject = {_x000D_
"employeeid": "160915848",_x000D_
"firstName": "tet",_x000D_
"lastName": "test",_x000D_
"email": "[email protected]",_x000D_
"country": "Brasil",_x000D_
"currentIndustry": "aaaaaaaaaaaaa",_x000D_
"otherIndustry": "aaaaaaaaaaaaa",_x000D_
"currentOrganization": "test",_x000D_
"salary": "1234567"_x000D_
};_x000D_
_x000D_
delete myObject['currentIndustry'];_x000D_
// OR delete myObject.currentIndustry;_x000D_
_x000D_
console.log(myObject);
_x000D_
let myObject = {_x000D_
"employeeid": "160915848",_x000D_
"firstName": "tet",_x000D_
"lastName": "test",_x000D_
"email": "[email protected]",_x000D_
"country": "Brasil",_x000D_
"currentIndustry": "aaaaaaaaaaaaa",_x000D_
"otherIndustry": "aaaaaaaaaaaaa",_x000D_
"currentOrganization": "test",_x000D_
"salary": "1234567"_x000D_
};_x000D_
_x000D_
myObject.currentIndustry = undefined;_x000D_
myObject = JSON.parse(JSON.stringify(myObject));_x000D_
_x000D_
console.log(myObject);
_x000D_
const myObject = {_x000D_
"employeeid": "160915848",_x000D_
"firstName": "tet",_x000D_
"lastName": "test",_x000D_
"email": "[email protected]",_x000D_
"country": "Brasil",_x000D_
"currentIndustry": "aaaaaaaaaaaaa",_x000D_
"otherIndustry": "aaaaaaaaaaaaa",_x000D_
"currentOrganization": "test",_x000D_
"salary": "1234567"_x000D_
};_x000D_
_x000D_
_x000D_
const {currentIndustry, ...filteredObject} = myObject;_x000D_
console.log(filteredObject);
_x000D_
Or if you can use omit() of underscore js library:
const filteredObject = _.omit(currentIndustry, 'myObject');
console.log(filteredObject);
When to use what??
If you don't wanna create a new filtered object, simply go for either option 1 or 2. Make sure you define your object with let while going with the second option as we are overriding the values. Or else you can use any of them.
hope this helps :)
I routinely multiply by 1.0 if I want floating point, it's easier than remembering the rules.
var textToFind = 'Google';
var dd = document.getElementById('MyDropDown');
for (var i = 0; i < dd.options.length; i++) {
if (dd.options[i].text === textToFind) {
dd.selectedIndex = i;
break;
}
}
The autoload config does start below the vendor dir. So you might want change the vendor dir, e.g.
{
"config": {
"vendor-dir": "../vendor/"
},
"autoload": {
"psr-0": {"AppName": "src/"}
}
}
Or isn't this possible in your project?
none of these solutions worked for me.
I have a terms and conditions modal that i wanted to force people to review before continuing...the defaults "static" and "keyboard" as per the options made it impossible to scroll down the page as the terms and conditions are a few pages log, static was not the answer for me.
So instead i went to unbind the the click method on the modal, with the following i was able to get the desired effect.
$('.modal').off('click');
i think android studio has a 64bit kernel version which is giving the problem. https://github.com/swcarpentry/windows-installer/issues/49
If there is a project you earlier imported externally (outside of Workspace), that may cause this problem. If you can access Eclipse try to remove it. If you are getting the 'No responding at startup', then go delete the file at source.
This will solve the problem.
in my .net core 3.1 applications I am getting two problem where inner cause was timeout exception. 1, one is i am getting aggregate exception and in it's inner exception was timeout exception 2, other case was Task canceled exception
My solution is
catch (Exception ex)
{
if (ex.InnerException is TimeoutException)
{
ex = ex.InnerException;
}
else if (ex is TaskCanceledException)
{
if ((ex as TaskCanceledException).CancellationToken == null || (ex as TaskCanceledException).CancellationToken.IsCancellationRequested == false)
{
ex = new TimeoutException("Timeout occurred");
}
}
Logger.Fatal(string.Format("Exception at calling {0} :{1}", url, ex.Message), ex);
}
There is no feature in scp to filter files. For "advanced" stuff like this, I recommend using rsync:
rsync -av --exclude '*.svn' user@server:/my/dir .
(this line copy rsync from distant folder to current one)
Recent versions of rsync tunnel over an ssh connection automatically by default.
To perform case-insensitive operations, supply re.IGNORECASE
>>> import re
>>> test = 'UPPER TEXT, lower text, Mixed Text'
>>> re.findall('text', test, flags=re.IGNORECASE)
['TEXT', 'text', 'Text']
and if we want to replace text matching the case...
>>> def matchcase(word):
def replace(m):
text = m.group()
if text.isupper():
return word.upper()
elif text.islower():
return word.lower()
elif text[0].isupper():
return word.capitalize()
else:
return word
return replace
>>> re.sub('text', matchcase('word'), test, flags=re.IGNORECASE)
'UPPER WORD, lower word, Mixed Word'
You can use %
sed -i "s%http://www.fubar.com%URL_FUBAR%g"
You can use ExtendedXmlSerializer. If you have a class:
public class TestClass
{
public Dictionary<int, string> Dictionary { get; set; }
}
and create instance of this class:
var obj = new TestClass
{
Dictionary = new Dictionary<int, string>
{
{1, "First"},
{2, "Second"},
{3, "Other"},
}
};
You can serialize this object using ExtendedXmlSerializer:
var serializer = new ConfigurationContainer()
.UseOptimizedNamespaces() //If you want to have all namespaces in root element
.Create();
var xml = serializer.Serialize(
new XmlWriterSettings { Indent = true }, //If you want to formated xml
obj);
Output xml will look like:
<?xml version="1.0" encoding="utf-8"?>
<TestClass xmlns:sys="https://extendedxmlserializer.github.io/system" xmlns:exs="https://extendedxmlserializer.github.io/v2" xmlns="clr-namespace:ExtendedXmlSerializer.Samples;assembly=ExtendedXmlSerializer.Samples">
<Dictionary>
<sys:Item>
<Key>1</Key>
<Value>First</Value>
</sys:Item>
<sys:Item>
<Key>2</Key>
<Value>Second</Value>
</sys:Item>
<sys:Item>
<Key>3</Key>
<Value>Other</Value>
</sys:Item>
</Dictionary>
</TestClass>
You can install ExtendedXmlSerializer from nuget or run the following command:
Install-Package ExtendedXmlSerializer
Since $(this)
isn't correct anymore with ES6 arrow function which don't have have the same this
than function() {}
, you shouldn't use $( this ) if you use ES6 syntax.
Besides according to the official jQuery's anwser, there's a simpler way to do that what the top answer says.
The best way to get the html of a selected option is to use
$('#yourSelect option:selected').html();
You can replace html()
by text()
or anything else you want (but html()
was in the original question).
Just add the event listener change
, with the jQuery's shorthand method change()
, to trigger your code when the selected option change.
$ ('#yourSelect' ).change(() => {
process($('#yourSelect option:selected').html());
});
If you just want to know the value of the option:selected
(the option that the user has chosen) you can just use $('#yourSelect').val()
You must also have the following imports in order to import the DLL
using System.Runtime.InteropServices;
using System.Diagnostics;
In PHP 7 you can write it even shorter:
$age = $_GET['age'] ?? 27;
This means that the $age
variable will be set to the age
parameter if it is provided in the URL, or it will default to 27.
See all new features of PHP 7.
public class Mode {
public static void main(String[] args) {
int[] unsortedArr = new int[] { 3, 1, 5, 2, 4, 1, 3, 4, 3, 2, 1, 3, 4, 1 ,-1,-1,-1,-1,-1};
Map<Integer, Integer> countMap = new HashMap<Integer, Integer>();
for (int i = 0; i < unsortedArr.length; i++) {
Integer value = countMap.get(unsortedArr[i]);
if (value == null) {
countMap.put(unsortedArr[i], 0);
} else {
int intval = value.intValue();
intval++;
countMap.put(unsortedArr[i], intval);
}
}
System.out.println(countMap.toString());
int max = getMaxFreq(countMap.values());
List<Integer> modes = new ArrayList<Integer>();
for (Entry<Integer, Integer> entry : countMap.entrySet()) {
int value = entry.getValue();
if (value == max)
modes.add(entry.getKey());
}
System.out.println(modes);
}
public static int getMaxFreq(Collection<Integer> valueSet) {
int max = 0;
boolean setFirstTime = false;
for (Iterator iterator = valueSet.iterator(); iterator.hasNext();) {
Integer integer = (Integer) iterator.next();
if (!setFirstTime) {
max = integer;
setFirstTime = true;
}
if (max < integer) {
max = integer;
}
}
return max;
}
}
Test data
Modes {1,3} for { 3, 1, 5, 2, 4, 1, 3, 4, 3, 2, 1, 3, 4, 1 };
Modes {-1} for { 3, 1, 5, 2, 4, 1, 3, 4, 3, 2, 1, 3, 4, 1 ,-1,-1,-1,-1,-1};
You can disable them altogether by
(setq make-backup-files nil)
Yes, that is fully possible (i.e. I do exactly this); you just need to reference the right dll (System.ServiceProcess.dll) and add an installer class...
[RunInstaller(true)]
public sealed class MyServiceInstallerProcess : ServiceProcessInstaller
{
public MyServiceInstallerProcess()
{
this.Account = ServiceAccount.NetworkService;
}
}
[RunInstaller(true)]
public sealed class MyServiceInstaller : ServiceInstaller
{
public MyServiceInstaller()
{
this.Description = "Service Description";
this.DisplayName = "Service Name";
this.ServiceName = "ServiceName";
this.StartType = System.ServiceProcess.ServiceStartMode.Automatic;
}
}
static void Install(bool undo, string[] args)
{
try
{
Console.WriteLine(undo ? "uninstalling" : "installing");
using (AssemblyInstaller inst = new AssemblyInstaller(typeof(Program).Assembly, args))
{
IDictionary state = new Hashtable();
inst.UseNewContext = true;
try
{
if (undo)
{
inst.Uninstall(state);
}
else
{
inst.Install(state);
inst.Commit(state);
}
}
catch
{
try
{
inst.Rollback(state);
}
catch { }
throw;
}
}
}
catch (Exception ex)
{
Console.Error.WriteLine(ex.Message);
}
}
Probably a variant of the other examples, but I use this method to also make sure a dot is shown before the decimal places and not a comma:
someValue.ToString("0.00", CultureInfo.InvariantCulture)
If someone is still looking for an answer, for me the problem was in routes/web.php file. Example:
Route::get('/', function () {
return view('welcome');
});
It is also Route, so yeah...Just remove it if not needed and you are good to go! You should also follow answers provided from above.
You can use select ... into ...
to create and populate a temp table and then query the temp table to return the result.
select *
into #TempTable
from YourTable
select *
from #TempTable
This one is working well in MS SQL. It transforms varchar to the result of two-decimal-places-limited float.
Select field1, cast(Try_convert(float,(Count(field2)* 100) /
Try_convert(float, (Select Count(*) From table1))) as decimal(10,2)) as new_field_name
From table1
Group By field1, field2;
Close all open projects and exit Eclipse. Now you can open Eclipse without getting the error. Start opening your projects one by one to find which one causes the problem. This is most likely because you deleted a Device profile inside the AVD manager.
Or you can start working on a new workspace, (i.e. change your workspace), then try to import your project from the old workspace
you have parse that Json
string using JSON.parse()
..
}).done(function(data){
obj = JSON.parse(data);
alert(obj.jobtitel);
});
As of Swift 4 (Xcode 9), the Swift standard
library provides methods to convert between Swift string ranges
(Range<String.Index>
) and NSString
ranges (NSRange
).
Example:
let str = "abc"
let r1 = str.range(of: "")!
// String range to NSRange:
let n1 = NSRange(r1, in: str)
print((str as NSString).substring(with: n1)) //
// NSRange back to String range:
let r2 = Range(n1, in: str)!
print(str[r2]) //
Therefore the text replacement in the text field delegate method can now be done as
func textField(_ textField: UITextField,
shouldChangeCharactersIn range: NSRange,
replacementString string: String) -> Bool {
if let oldString = textField.text {
let newString = oldString.replacingCharacters(in: Range(range, in: oldString)!,
with: string)
// ...
}
// ...
}
(Older answers for Swift 3 and earlier:)
As of Swift 1.2, String.Index
has an initializer
init?(_ utf16Index: UTF16Index, within characters: String)
which can be used to convert NSRange
to Range<String.Index>
correctly
(including all cases of Emojis, Regional Indicators or other extended
grapheme clusters) without intermediate conversion to an NSString
:
extension String {
func rangeFromNSRange(nsRange : NSRange) -> Range<String.Index>? {
let from16 = advance(utf16.startIndex, nsRange.location, utf16.endIndex)
let to16 = advance(from16, nsRange.length, utf16.endIndex)
if let from = String.Index(from16, within: self),
let to = String.Index(to16, within: self) {
return from ..< to
}
return nil
}
}
This method returns an optional string range because not all NSRange
s
are valid for a given Swift string.
The UITextFieldDelegate
delegate method can then be written as
func textField(textField: UITextField, shouldChangeCharactersInRange range: NSRange, replacementString string: String) -> Bool {
if let swRange = textField.text.rangeFromNSRange(range) {
let newString = textField.text.stringByReplacingCharactersInRange(swRange, withString: string)
// ...
}
return true
}
The inverse conversion is
extension String {
func NSRangeFromRange(range : Range<String.Index>) -> NSRange {
let utf16view = self.utf16
let from = String.UTF16View.Index(range.startIndex, within: utf16view)
let to = String.UTF16View.Index(range.endIndex, within: utf16view)
return NSMakeRange(from - utf16view.startIndex, to - from)
}
}
A simple test:
let str = "abc"
let r1 = str.rangeOfString("")!
// String range to NSRange:
let n1 = str.NSRangeFromRange(r1)
println((str as NSString).substringWithRange(n1)) //
// NSRange back to String range:
let r2 = str.rangeFromNSRange(n1)!
println(str.substringWithRange(r2)) //
Update for Swift 2:
The Swift 2 version of rangeFromNSRange()
was already given
by Serhii Yakovenko in this answer, I am including it
here for completeness:
extension String {
func rangeFromNSRange(nsRange : NSRange) -> Range<String.Index>? {
let from16 = utf16.startIndex.advancedBy(nsRange.location, limit: utf16.endIndex)
let to16 = from16.advancedBy(nsRange.length, limit: utf16.endIndex)
if let from = String.Index(from16, within: self),
let to = String.Index(to16, within: self) {
return from ..< to
}
return nil
}
}
The Swift 2 version of NSRangeFromRange()
is
extension String {
func NSRangeFromRange(range : Range<String.Index>) -> NSRange {
let utf16view = self.utf16
let from = String.UTF16View.Index(range.startIndex, within: utf16view)
let to = String.UTF16View.Index(range.endIndex, within: utf16view)
return NSMakeRange(utf16view.startIndex.distanceTo(from), from.distanceTo(to))
}
}
Update for Swift 3 (Xcode 8):
extension String {
func nsRange(from range: Range<String.Index>) -> NSRange {
let from = range.lowerBound.samePosition(in: utf16)
let to = range.upperBound.samePosition(in: utf16)
return NSRange(location: utf16.distance(from: utf16.startIndex, to: from),
length: utf16.distance(from: from, to: to))
}
}
extension String {
func range(from nsRange: NSRange) -> Range<String.Index>? {
guard
let from16 = utf16.index(utf16.startIndex, offsetBy: nsRange.location, limitedBy: utf16.endIndex),
let to16 = utf16.index(utf16.startIndex, offsetBy: nsRange.location + nsRange.length, limitedBy: utf16.endIndex),
let from = from16.samePosition(in: self),
let to = to16.samePosition(in: self)
else { return nil }
return from ..< to
}
}
Example:
let str = "abc"
let r1 = str.range(of: "")!
// String range to NSRange:
let n1 = str.nsRange(from: r1)
print((str as NSString).substring(with: n1)) //
// NSRange back to String range:
let r2 = str.range(from: n1)!
print(str.substring(with: r2)) //
var r = 3; //start from rows 3
var c = 5; //start from col 5
var rows = 8;
var cols = 7;
for (var i = 0; i < rows; i++)
{
for (var j = 0; j < cols; j++)
{
if(j <= c && i <= r) {
myArray[i][j] = 1;
} else {
myArray[i][j] = 0;
}
}
}
add volly to your studio gradle app by compile 'com.android.volley:volley:1.0.0'
Try using a simple HttpResponseMessage
with its Content
property set to a StreamContent
:
// using System.IO;
// using System.Net.Http;
// using System.Net.Http.Headers;
public HttpResponseMessage Post(string version, string environment,
string filetype)
{
var path = @"C:\Temp\test.exe";
HttpResponseMessage result = new HttpResponseMessage(HttpStatusCode.OK);
var stream = new FileStream(path, FileMode.Open, FileAccess.Read);
result.Content = new StreamContent(stream);
result.Content.Headers.ContentType =
new MediaTypeHeaderValue("application/octet-stream");
return result;
}
A few things to note about the stream
used:
You must not call stream.Dispose()
, since Web API still needs to be able to access it when it processes the controller method's result
to send data back to the client. Therefore, do not use a using (var stream = …)
block. Web API will dispose the stream for you.
Make sure that the stream has its current position set to 0 (i.e. the beginning of the stream's data). In the above example, this is a given since you've only just opened the file. However, in other scenarios (such as when you first write some binary data to a MemoryStream
), make sure to stream.Seek(0, SeekOrigin.Begin);
or set stream.Position = 0;
With file streams, explicitly specifying FileAccess.Read
permission can help prevent access rights issues on web servers; IIS application pool accounts are often given only read / list / execute access rights to the wwwroot.
The strategy from Wikipedia for playing a perfect game (win or tie every time) seems like straightforward pseudo-code:
Quote from Wikipedia (Tic Tac Toe#Strategy)
A player can play a perfect game of Tic-tac-toe (to win or, at least, draw) if they choose the first available move from the following list, each turn, as used in Newell and Simon's 1972 tic-tac-toe program.[6]
Win: If you have two in a row, play the third to get three in a row.
Block: If the opponent has two in a row, play the third to block them.
Fork: Create an opportunity where you can win in two ways.
Block Opponent's Fork:
Option 1: Create two in a row to force the opponent into defending, as long as it doesn't result in them creating a fork or winning. For example, if "X" has a corner, "O" has the center, and "X" has the opposite corner as well, "O" must not play a corner in order to win. (Playing a corner in this scenario creates a fork for "X" to win.)
Option 2: If there is a configuration where the opponent can fork, block that fork.
Center: Play the center.
Opposite Corner: If the opponent is in the corner, play the opposite corner.
Empty Corner: Play an empty corner.
Empty Side: Play an empty side.
Recognizing what a "fork" situation looks like could be done in a brute-force manner as suggested.
Note: A "perfect" opponent is a nice exercise but ultimately not worth 'playing' against. You could, however, alter the priorities above to give characteristic weaknesses to opponent personalities.
Here is a simple solution. This is a late answer but may be simple one-
const data = {
city: 'foo',
year: 2020,
person: {
name: {
firstName: 'john',
lastName: 'doe'
},
age: 20,
type: {
a: 2,
b: 3,
c: {
d: 4,
e: 5
}
}
},
}
function getKey(obj, res = [], parent = '') {
const keys = Object.keys(obj);
/** Loop throw the object keys and check if there is any object there */
keys.forEach(key => {
if (typeof obj[key] !== 'object') {
// Generate the heirarchy
parent ? res.push(`${parent}.${key}`) : res.push(key);
} else {
// If object found then recursively call the function with updpated parent
let newParent = parent ? `${parent}.${key}` : key;
getKey(obj[key], res, newParent);
}
});
}
const result = [];
getKey(data, result, '');
console.log(result);
_x000D_
.as-console-wrapper{min-height: 100%!important; top: 0}
_x000D_
Assuming you're using a std::ofstream
to write to file, the following snippet will write a std::string
to file in human readable form:
std::ofstream file("filename");
std::string my_string = "Hello text in file\n";
file << my_string;
If you use Python from MacPorts, it has it's own easy_install located at: /opt/local/bin/easy_install-2.6 (for py26, that is). It's not the same one as simply calling easy_install directly, even if you used python_select to change your default python command.
My ReactJS version: 16.12.0
For Class Components
HTML structure inside render()
function
render()
return(
<body>
<div ref="messageList">
<div>Message 1</div>
<div>Message 2</div>
<div>Message 3</div>
</div>
</body>
)
)
scrollToBottom()
function which will get reference of the element.
and scroll according to scrollIntoView()
function.
scrollToBottom = () => {
const { messageList } = this.refs;
messageList.scrollIntoView({behavior: "smooth", block: "end", inline: "nearest"});
}
and call the above function inside componentDidMount()
and componentDidUpdate()
For Functional Components (Hooks)
Import useRef()
and useEffect()
import { useEffect, useRef } from 'react'
Inside your export function, (same as calling a useState()
)
const messageRef = useRef();
And let's assume you have to scroll when page load,
useEffect(() => {
if (messageRef.current) {
messageRef.current.scrollIntoView(
{
behavior: 'smooth',
block: 'end',
inline: 'nearest'
})
}
})
OR if you want it to trigger once an action performed,
useEffect(() => {
if (messageRef.current) {
messageRef.current.scrollIntoView(
{
behavior: 'smooth',
block: 'end',
inline: 'nearest'
})
}
},
[stateVariable])
And Finally, to your HTML structure
return(
<body>
<div ref={messageRef}> // <= The only different is we are calling a variable here
<div>Message 1</div>
<div>Message 2</div>
<div>Message 3</div>
</div>
</body>
)
for more explanation about Element.scrollIntoView()
visit developer.mozilla.org
More detailed explanation in Callback refs visit reactjs.org
You could do this with an INSTEAD OF INSERT
trigger on the table, that checks for the existance of the row and then updates/inserts depending on whether it exists already. There is an example of how to do this for SQL Server 2000+ on MSDN here:
CREATE TRIGGER IO_Trig_INS_Employee ON Employee
INSTEAD OF INSERT
AS
BEGIN
SET NOCOUNT ON
-- Check for duplicate Person. If no duplicate, do an insert.
IF (NOT EXISTS (SELECT P.SSN
FROM Person P, inserted I
WHERE P.SSN = I.SSN))
INSERT INTO Person
SELECT SSN,Name,Address,Birthdate
FROM inserted
ELSE
-- Log attempt to insert duplicate Person row in PersonDuplicates table.
INSERT INTO PersonDuplicates
SELECT SSN,Name,Address,Birthdate,SUSER_SNAME(),GETDATE()
FROM inserted
-- Check for duplicate Employee. If no duplicate, do an insert.
IF (NOT EXISTS (SELECT E.SSN
FROM EmployeeTable E, inserted
WHERE E.SSN = inserted.SSN))
INSERT INTO EmployeeTable
SELECT EmployeeID,SSN, Department, Salary
FROM inserted
ELSE
--If duplicate, change to UPDATE so that there will not
--be a duplicate key violation error.
UPDATE EmployeeTable
SET EmployeeID = I.EmployeeID,
Department = I.Department,
Salary = I.Salary
FROM EmployeeTable E, inserted I
WHERE E.SSN = I.SSN
END
This code might work:
//if the directory exists
DWORD dwAttr = GetFileAttributes(str);
if(dwAttr != 0xffffffff && (dwAttr & FILE_ATTRIBUTE_DIRECTORY))
You can do it if you wrap your text into a span like:
a {_x000D_
color: red;_x000D_
text-decoration: underline;_x000D_
}_x000D_
span {_x000D_
color: blue;_x000D_
text-decoration: none;_x000D_
}
_x000D_
<a href="#">_x000D_
<span>Text</span>_x000D_
</a>
_x000D_
If you're creating a DateTime object using the expiration dates (month/year), you can use ToString() on your DateTime variable like so:
DateTime expirationDate = new DateTime(2008, 1, 31); // random date
string lastTwoDigitsOfYear = expirationDate.ToString("yy");
Edit: Be careful with your dates though if you use the DateTime object during validation. If somebody selects 05/2008 as their card's expiration date, it expires at the end of May, not on the first.
workbench.action.quickOpen
.You can use this to search the Keyboard Shortcuts
menu located in Preferences
.
On MacOS the default keybinding is cmd ? + P.
(Coming from Sublime Text, I always change this to cmd ? + T)
You have to workaround this via static application context accessor approach:
@Component
public class StaticContextAccessor {
private static StaticContextAccessor instance;
@Autowired
private ApplicationContext applicationContext;
@PostConstruct
public void registerInstance() {
instance = this;
}
public static <T> T getBean(Class<T> clazz) {
return instance.applicationContext.getBean(clazz);
}
}
Then you can access bean instances in a static manner.
public class Boo {
public static void randomMethod() {
StaticContextAccessor.getBean(Foo.class).doStuff();
}
}
For people using Google Cloud Platform, any error will stop the import process. Personally I encountered two different errors depending on the pg_dump command I issued :
1- The input is a PostgreSQL custom-format dump. Use the pg_restore command-line client to restore this dump to a database.
Occurs when you've tried to dump your DB in a non plain text format. I.e when the command lacks the -Fp or --format=plain parameter. However, if you add it to your command, you may then encounter the following error :
2- SET SET SET SET SET SET CREATE EXTENSION ERROR: must be owner of extension plpgsql
This is a permission issue I have been unable to fix using the command provided in the GCP docs, the tips from this current thread, or following advice from Google Postgres team here. Which recommended to issue the following command :
pg_dump -Fp --no-acl --no-owner -U myusername myDBName > mydump.sql
The only thing that did the trick in my case was manually editing the dump file and commenting out all commands relating to plpgsql.
I hope this helps GCP-reliant souls.
Update :
It's easier to dump the file commenting out extensions, especially since some dumps can be huge :
pg_dump ... | grep -v -E '(CREATE\ EXTENSION|COMMENT\ ON)' > mydump.sql
Which can be narrowed down to plpgsql :
pg_dump ... | grep -v -E '(CREATE\ EXTENSION\ IF\ NOT\ EXISTS\ plpgsql|COMMENT\ ON\ EXTENSION\ plpgsql)' > mydump.sql
Remove key and then add again the modified key, value pair as shown below :
JSONObject js = new JSONObject();
js.put("name", "rai");
js.remove("name");
js.put("name", "abc");
I haven't used your example; but conceptually its same.
In my case, detach
and attach
worked:
getSupportFragmentManager()
.beginTransaction()
.detach(contentFragment)
.attach(contentFragment)
.commit();
Instead of casting the model in the RenderPartial call, and since you're using razor, you can modify the first line in your view from
@model dynamic
to
@model YourNamespace.YourModelType
This has the advantage of working on every @Html.Partial
call you have in the view, and also gives you intellisense for the properties.
System.Linq has ToList() on IQueryable<> and IEnumerable<>. It will cause a full pass through the data to put it into a list, though. You loose your deferred invoke when you do this. Not a big deal if it is the consumer of the data.
You can use this:
try {
Resources res = getResources();
InputStream in_s = res.openRawResource(R.raw.help);
byte[] b = new byte[in_s.available()];
in_s.read(b);
txtHelp.setText(new String(b));
} catch (Exception e) {
// e.printStackTrace();
txtHelp.setText("Error: can't show help.");
}
Check field type in table just save time stamp value in datatype like bigint
etc.
Not datetime
type
Automatic startup means that the service is automatically started when Windows starts. As others have mentioned, to start it from the console you should use the ServiceController.
A slightly simpler method:
>>> t = ((1, 'a'),(2, 'b'))
>>> dict(map(reversed, t))
{'a': 1, 'b': 2}
Try below code using RJSONIO in console
library(RJSONIO)
library(RCurl)
json_file = getURL("https://raw.githubusercontent.com/isrini/SI_IS607/master/books.json")
json_file2 = RJSONIO::fromJSON(json_file)
head(json_file2)
if ([self.locationManager respondsToSelector:@selector(setAllowsBackgroundLocationUpdates:)]) {
[self.locationManager setAllowsBackgroundLocationUpdates:YES];
}
This is needed for background location tracking since iOS 9.
To elaborate on https://stackoverflow.com/a/59311063/1328979, here is a fully documented, annotated and tested Python 3 implementation for the general case.
from __future__ import annotations # To allow "MinHeap.push -> MinHeap:"
from typing import Generic, List, Optional, TypeVar
from heapq import heapify, heappop, heappush, heapreplace
T = TypeVar('T')
class MinHeap(Generic[T]):
'''
MinHeap provides a nicer API around heapq's functionality.
As it is a minimum heap, the first element of the heap is always the
smallest.
>>> h = MinHeap([3, 1, 4, 2])
>>> h[0]
1
>>> h.peek()
1
>>> h.push(5) # N.B.: the array isn't always fully sorted.
[1, 2, 4, 3, 5]
>>> h.pop()
1
>>> h.pop()
2
>>> h.pop()
3
>>> h.push(3).push(2)
[2, 3, 4, 5]
>>> h.replace(1)
2
>>> h
[1, 3, 4, 5]
'''
def __init__(self, array: Optional[List[T]] = None):
if array is None:
array = []
heapify(array)
self.h = array
def push(self, x: T) -> MinHeap:
heappush(self.h, x)
return self # To allow chaining operations.
def peek(self) -> T:
return self.h[0]
def pop(self) -> T:
return heappop(self.h)
def replace(self, x: T) -> T:
return heapreplace(self.h, x)
def __getitem__(self, i) -> T:
return self.h[i]
def __len__(self) -> int:
return len(self.h)
def __str__(self) -> str:
return str(self.h)
def __repr__(self) -> str:
return str(self.h)
class Reverse(Generic[T]):
'''
Wrap around the provided object, reversing the comparison operators.
>>> 1 < 2
True
>>> Reverse(1) < Reverse(2)
False
>>> Reverse(2) < Reverse(1)
True
>>> Reverse(1) <= Reverse(2)
False
>>> Reverse(2) <= Reverse(1)
True
>>> Reverse(2) <= Reverse(2)
True
>>> Reverse(1) == Reverse(1)
True
>>> Reverse(2) > Reverse(1)
False
>>> Reverse(1) > Reverse(2)
True
>>> Reverse(2) >= Reverse(1)
False
>>> Reverse(1) >= Reverse(2)
True
>>> Reverse(1)
1
'''
def __init__(self, x: T) -> None:
self.x = x
def __lt__(self, other: Reverse) -> bool:
return other.x.__lt__(self.x)
def __le__(self, other: Reverse) -> bool:
return other.x.__le__(self.x)
def __eq__(self, other) -> bool:
return self.x == other.x
def __ne__(self, other: Reverse) -> bool:
return other.x.__ne__(self.x)
def __ge__(self, other: Reverse) -> bool:
return other.x.__ge__(self.x)
def __gt__(self, other: Reverse) -> bool:
return other.x.__gt__(self.x)
def __str__(self):
return str(self.x)
def __repr__(self):
return str(self.x)
class MaxHeap(MinHeap):
'''
MaxHeap provides an implement of a maximum-heap, as heapq does not provide
it. As it is a maximum heap, the first element of the heap is always the
largest. It achieves this by wrapping around elements with Reverse,
which reverses the comparison operations used by heapq.
>>> h = MaxHeap([3, 1, 4, 2])
>>> h[0]
4
>>> h.peek()
4
>>> h.push(5) # N.B.: the array isn't always fully sorted.
[5, 4, 3, 1, 2]
>>> h.pop()
5
>>> h.pop()
4
>>> h.pop()
3
>>> h.pop()
2
>>> h.push(3).push(2).push(4)
[4, 3, 2, 1]
>>> h.replace(1)
4
>>> h
[3, 1, 2, 1]
'''
def __init__(self, array: Optional[List[T]] = None):
if array is not None:
array = [Reverse(x) for x in array] # Wrap with Reverse.
super().__init__(array)
def push(self, x: T) -> MaxHeap:
super().push(Reverse(x))
return self
def peek(self) -> T:
return super().peek().x
def pop(self) -> T:
return super().pop().x
def replace(self, x: T) -> T:
return super().replace(Reverse(x)).x
if __name__ == '__main__':
import doctest
doctest.testmod()
https://gist.github.com/marccarre/577a55850998da02af3d4b7b98152cf4
Consider following code
<ul id="myTask">
<li>Coding</li>
<li>Answering</li>
<li>Getting Paid</li>
</ul>
Now, here goes the difference
// Remove the myTask item when clicked.
$('#myTask').children().click(function () {
$(this).remove()
});
Now, what if we add a myTask again?
$('#myTask').append('<li>Answer this question on SO</li>');
Clicking this myTask item will not remove it from the list, since it doesn't have any event handlers bound. If instead we'd used .on
, the new item would work without any extra effort on our part. Here's how the .on version would look:
$('#myTask').on('click', 'li', function (event) {
$(event.target).remove()
});
Summary:
The difference between .on()
and .click()
would be that .click()
may not work when the DOM elements associated with the .click()
event are added dynamically at a later point while .on()
can be used in situations where the DOM elements associated with the .on()
call may be generated dynamically at a later point.
you could use "AUTHID CURRENT_USER" in body of your procedure definition for your requirements.
I found @user1258240's answer to be pretty concise given this is not as simple as setting a returnKeyType
property.
Just wanted to contribute my own "re-usable" approach to this:
func SetDoneToolbar(field:UITextField) {
let doneToolbar:UIToolbar = UIToolbar()
doneToolbar.items=[
UIBarButtonItem(barButtonSystemItem: UIBarButtonItem.SystemItem.flexibleSpace, target: self, action: nil),
UIBarButtonItem(title: "Done", style: UIBarButtonItem.Style.plain, target: self, action: #selector(ViewController.dismissKeyboard))
]
doneToolbar.sizeToFit()
field.inputAccessoryView = doneToolbar
}
override func viewDidLoad() {
super.viewDidLoad()
SetDoneToolbar(field: UITextField_1)
SetDoneToolbar(field: UITextField_2)
SetDoneToolbar(field: UITextField_3)
SetDoneToolbar(field: UITextField_N)
}
FTL stands for FreeMarker Template.
It is very useful when you want to follow the MVC (Model View Controller) pattern.
The idea behind using the MVC pattern for dynamic Web pages is that you separate the designers (HTML authors) from the programmers.
The method I prefer assigns an array of data to the combobox. Click on the body of your userform and change the "Click" event to "Initialize". Now the combobox will fill upon the initializing of the userform. I hope this helps.
Sub UserForm_Initialize()
ComboBox1.List = Array("1001", "1002", "1003", "1004", "1005", "1006", "1007", "1008", "1009", "1010")
End Sub
Getting the ball rolling with this community wiki answer. Feel free to edit me with your improvements.
ws WebSocket server and client for node.js. One of the fastest libraries if not the fastest one.
websocket-node WebSocket server and client for node.js
websocket-driver-node WebSocket server and client protocol parser node.js - used in faye-websocket-node
faye-websocket-node WebSocket server and client for node.js - used in faye and sockjs
socket.io WebSocket server and client for node.js + client for browsers + (v0 has newest to oldest fallbacks, v1 of Socket.io uses engine.io) + channels - used in stack.io. Client library tries to reconnect upon disconnection.
sockjs WebSocket server and client for node.js and others + client for browsers + newest to oldest fallbacks
faye WebSocket server and client for node.js and others + client for browsers + fallbacks + support for other server-side languages
deepstream.io clusterable realtime server that handles WebSockets & TCP connections and provides data-sync, pub/sub and request/response
socketcluster WebSocket server cluster which makes use of all CPU cores on your machine. For example, if you were to use an xlarge Amazon EC2 instance with 32 cores, you would be able to handle almost 32 times the traffic on a single instance.
primus Provides a common API for most of the libraries above for easy switching + stability improvements for all of them.
When to use:
use the basic WebSocket servers when you want to use the native WebSocket implementations on the clientside, beware of the browser incompatabilities
use the fallback libraries when you care about browser fallbacks
use the full featured libraries when you care about channels
use primus when you have no idea about what to use, are not in the mood for rewriting your application when you need to switch frameworks because of changing project requirements or need additional connection stability.
Where to test:
Firecamp is a GUI testing environment for SocketIO, WS and all major real-time technology. Debug the real-time events while you're developing it.
Using NAT (the default) this is not possible. Bridged Networking should allow it. If bridged does not work for you (this may be the case when your network adminstration does not allow multiple IP addresses on one physical interface), you could try 'Host-only networking' instead.
For configuration of Host-only here is a quote from the vbox manual(which is pretty good). http://www.virtualbox.org/manual/ch06.html:
For host-only networking, like with internal networking, you may find the DHCP server useful that is built into VirtualBox. This can be enabled to then manage the IP addresses in the host-only network since otherwise you would need to configure all IP addresses statically.
In the VirtualBox graphical user interface, you can configure all these items in the global settings via "File" -> "Settings" -> "Network", which lists all host-only networks which are presently in use. Click on the network name and then on the "Edit" button to the right, and you can modify the adapter and DHCP settings.
npm install
npm run start
if this didn't work, try to install the nodejs and run repair
or clean npm cache npm cache clean --force
Edit the system environmental variable
Environment Variables...
Path
variable nameEdit..
C:\Program Files\nodejs
on the list, if not add thisTry jQuery:
$("#banner-contenedor").width();
class Timer
{
private $startTime = null;
public function __construct($showSeconds = true)
{
$this->startTime = microtime(true);
echo 'Working - please wait...' . PHP_EOL;
}
public function __destruct()
{
$endTime = microtime(true);
$time = $endTime - $this->startTime;
$hours = (int)($time / 60 / 60);
$minutes = (int)($time / 60) - $hours * 60;
$seconds = (int)$time - $hours * 60 * 60 - $minutes * 60;
$timeShow = ($hours == 0 ? "00" : $hours) . ":" . ($minutes == 0 ? "00" : ($minutes < 10 ? "0" . $minutes : $minutes)) . ":" . ($seconds == 0 ? "00" : ($seconds < 10 ? "0" . $seconds : $seconds));
echo 'Job finished in ' . $timeShow . PHP_EOL;
}
}
$t = new Timer(); // echoes "Working, please wait.."
[some operations]
unset($t); // echoes "Job finished in h:m:s"
In case if anyone wants to create there own exponential function using recursion, below is for your reference.
public static double power(double value, double p) {
if (p <= 0)
return 1;
return value * power(value, p - 1);
}
To append different text to the end of each line, you can use the plugin ConyEdit to do this.
With ConyEdit running in the background, follow these steps.
cc.gl a
to get lines and store in an array named a. cc.aal //$a
to append after each line, using the contents of array a.It has uses in both C and C++.
As you guessed, the static
part limits its scope to that compilation unit. It also provides for static initialization. const
just tells the compiler to not let anybody modify it. This variable is either put in the data or bss segment depending on the architecture, and might be in memory marked read-only.
All that is how C treats these variables (or how C++ treats namespace variables). In C++, a member marked static
is shared by all instances of a given class. Whether it's private or not doesn't affect the fact that one variable is shared by multiple instances. Having const
on there will warn you if any code would try to modify that.
If it was strictly private, then each instance of the class would get its own version (optimizer notwithstanding).
A better alternative to using pointers to pointers is to use std::vector
. That takes care of the details of memory allocation and deallocation.
std::vector<std::vector<int>> create2DArray(unsigned height, unsigned width)
{
return std::vector<std::vector<int>>(height, std::vector<int>(width, 0));
}
Starting with MVC 5, you can also use Attribute Routing to move the URL parameter configuration to your controllers.
A detailed discussion is available here: http://blogs.msdn.com/b/webdev/archive/2013/10/17/attribute-routing-in-asp-net-mvc-5.aspx
Summary:
First you enable attribute routing
public class RouteConfig
{
public static void RegisterRoutes(RouteCollection routes)
{
routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
routes.MapMvcAttributeRoutes();
}
}
Then you can use attributes to define parameters and optionally data types
public class BooksController : Controller
{
// eg: /books
// eg: /books/1430210079
[Route("books/{isbn?}")]
public ActionResult View(string isbn)
You could create a basket service. And generally in JS you use objects instead of lots of parameters.
Here's an example: http://jsfiddle.net/2MbZY/
var app = angular.module('myApp', []);
app.factory('basket', function() {
var items = [];
var myBasketService = {};
myBasketService.addItem = function(item) {
items.push(item);
};
myBasketService.removeItem = function(item) {
var index = items.indexOf(item);
items.splice(index, 1);
};
myBasketService.items = function() {
return items;
};
return myBasketService;
});
function MyCtrl($scope, basket) {
$scope.newItem = {};
$scope.basket = basket;
}
Maybe you have a file/directory named test
in the directory. If this directory exists, and has no dependencies that are more recent, then this target is not rebuild.
To force rebuild on these kind of not-file-related targets, you should make them phony as follows:
.PHONY: all test clean
Note that you can declare all of your phony targets there.
A phony target is one that is not really the name of a file; rather it is just a name for a recipe to be executed when you make an explicit request.
If you know the width of the child element you are animating, you can use and animate a margin offset as well. For example, this will animate from left:0 to right:0
CSS:
.parent{
width:100%;
position:relative;
}
#itemToMove{
position:absolute;
width:150px;
right:100%;
margin-right:-150px;
}
Javascript:
$( "#itemToMove" ).animate({
"margin-right": "0",
"right": "0"
}, 1000 );
// Step 1 :- Register NotificationCenter
ViewDidLoad() {
self.yourtextfield.becomefirstresponder()
// Register your Notification, To know When Key Board Appears.
NotificationCenter.default.addObserver(self, selector: #selector(SelectVendorViewController.keyboardWillShow(notification:)), name: NSNotification.Name.UIKeyboardWillShow, object: nil)
// Register your Notification, To know When Key Board Hides.
NotificationCenter.default.addObserver(self, selector: #selector(SelectVendorViewController.keyboardWillHide(notification:)), name: NSNotification.Name.UIKeyboardWillHide, object: nil)
}
// Step 2 :- These Methods will be called Automatically when Keyboard appears Or Hides
func keyboardWillShow(notification:NSNotification) {
let userInfo:NSDictionary = notification.userInfo! as NSDictionary
let keyboardFrame:NSValue = userInfo.value(forKey: UIKeyboardFrameEndUserInfoKey) as! NSValue
let keyboardRectangle = keyboardFrame.cgRectValue
let keyboardHeight = keyboardRectangle.height
tblViewListData.frame.size.height = fltTblHeight-keyboardHeight
}
func keyboardWillHide(notification:NSNotification) {
tblViewListData.frame.size.height = fltTblHeight
}
var message =/*[[${message}]]*/ 'defaultanyvalue';
I'm not sure I understand the problem.
I you want to change the status bar color programmatically (and provided the device has Android 5.0) then you can use Window.setStatusBarColor()
. It shouldn't make a difference whether the activity is derived from Activity
or ActionBarActivity
.
Just try doing:
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
Window window = getWindow();
window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
window.setStatusBarColor(Color.BLUE);
}
Just tested this with ActionBarActivity
and it works alright.
Note: Setting the FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS
flag programmatically is not necessary if your values-v21
styles file has it set already, via:
<item name="android:windowDrawsSystemBarBackgrounds">true</item>
Not sure what you're wanting to do but using a DTD or schema might be all you need to validate the xml.
Otherwise, if you want to find an element you could use an xpath query to search for a particular element.
Deselect Hide Empty Middle Packages in Project Explorer Windows settings menu than you will be able to refactor each directory
If you don't want to add a dependency on Guava (per Michael's answer) then this comparator is equivalent:
private static Comparator<String> ALPHABETICAL_ORDER = new Comparator<String>() {
public int compare(String str1, String str2) {
int res = String.CASE_INSENSITIVE_ORDER.compare(str1, str2);
if (res == 0) {
res = str1.compareTo(str2);
}
return res;
}
};
Collections.sort(list, ALPHABETICAL_ORDER);
And I think it is just as easy to understand and code ...
The last 4 lines of the method can written more concisely as follows:
return (res != 0) ? res : str1.compareTo(str2);
If you set the following property to false then it will disable both bundling and minification.
In Global.asax.cs file, add the line as mentioned below
protected void Application_Start()
{
System.Web.Optimization.BundleTable.EnableOptimizations = false;
}