One way is to optional
like described in the accepted answer: https://stackoverflow.com/a/62566052/1803821
Another one is to use wrapper objects. You don't need to write them yourself as google already provides them:
At the top of your .proto file add this import:
import "google/protobuf/wrappers.proto";
Now you can use special wrappers for every simple type:
DoubleValue
FloatValue
Int64Value
UInt64Value
Int32Value
UInt32Value
BoolValue
StringValue
BytesValue
So to answer the original question a usage of such a wrapper could be like this:
message Foo {
int32 bar = 1;
google.protobuf.Int32Value baz = 2;
}
Now for example in Java I can do stuff like:
if(foo.hasBaz()) { ... }
Other configurable Spark option relating to jars and classpath, in case of yarn
as deploy mode are as follows
From the spark documentation,
spark.yarn.jars
List of libraries containing Spark code to distribute to YARN containers. By default, Spark on YARN will use Spark jars installed locally, but the Spark jars can also be in a world-readable location on HDFS. This allows YARN to cache it on nodes so that it doesn't need to be distributed each time an application runs. To point to jars on HDFS, for example, set this configuration to hdfs:///some/path. Globs are allowed.
spark.yarn.archive
An archive containing needed Spark jars for distribution to the YARN cache. If set, this configuration replaces spark.yarn.jars and the archive is used in all the application's containers. The archive should contain jar files in its root directory. Like with the previous option, the archive can also be hosted on HDFS to speed up file distribution.
Users can configure this parameter to specify their jars, which inturn gets included in Spark driver's classpath.
You must wrap the returning object literal into parentheses. Otherwise curly braces will be considered to denote the function’s body. The following works:
p => ({ foo: 'bar' });
You don't need to wrap any other expression into parentheses:
p => 10;
p => 'foo';
p => true;
p => [1,2,3];
p => null;
p => /^foo$/;
and so on.
Reference: MDN - Returning object literals
The other answers are great but if preferred, you can also do it with an Int
extension so long as the exponent is positive.
extension Int {
func pow(toPower: Int) -> Int {
guard toPower > 0 else { return 0 }
return Array(repeating: self, count: toPower).reduce(1, *)
}
}
2.pow(toPower: 8) // returns 256
In FirstActivity:
Intent sendDataToSecondActivity = new Intent(FirstActivity.this, SecondActivity.class);
sendDataToSecondActivity.putExtra("USERNAME",userNameEditText.getText().toString());
sendDataToSecondActivity.putExtra("PASSWORD",passwordEditText.getText().toString());
startActivity(sendDataToSecondActivity);
In SecondActivity
In onCreate()
String userName = getIntent().getStringExtra("USERNAME");
String passWord = getIntent().getStringExtra("PASSWORD");
Check out this really quick and to the point tutorial on how to get the scroll view working and fully scrollable with auto layout. Now, the only thing that is still leaving me puzzled is why the scroll view content size is always larger then necessary..
http://samwize.com/2014/03/14/how-to-use-uiscrollview-with-autolayout/
Beyond historical (good and already reported) reasons, there's is also a little problem with operators precedence: dot operator has higher priority than star operator, so if you have struct containing pointer to struct containing pointer to struct... These two are equivalent:
(*(*(*a).b).c).d
a->b->c->d
But the second is clearly more readable. Arrow operator has the highest priority (just as dot) and associates left to right. I think this is clearer than use dot operator both for pointers to struct and struct, because we know the type from the expression without have to look at the declaration, that could even be in another file.
The Uniform Resource Identifier is a unique pointer to the resource. A poorly form URI doesn't point to the resource and therefore performing a GET on it will not return a resource. 404 means The server has not found anything matching the Request-URI. If you put in the wrong URI or bad URI that is your problem and the reason you didn't get to a resource whether a HTML page or IMG.
a regular grammer is never ambiguous because it is either left linear or right linear so we cant make two decision tree for regular grammer so it is always unambiguous.but othert than regular grammar all are may or may not be regular
I guess the obvious answer to all of this is... Don't initialise your variables as NULL, initalise them as something relevant to what they are intended to become.
NULL should be treated as "non-existant value", which is the meaning of NULL. The variable can't be classed as existing to PHP because it hasn't been told what type of entity it is trying to be. It may aswell not exist, so PHP just says "Fine, it doesn't because there's no point to it anyway and NULL is my way of saying this".
Let's argue now. "But NULL is like saying 0 or FALSE or ''.
Wrong, 0-FALSE-'' are all still classed as empty values, but they ARE specified as some type of value or pre-determined answer to a question. FALSE is the answer to yes or no,'' is the answer to the title someone submitted, and 0 is the answer to quantity or time etc. They ARE set as some type of answer/result which makes them valid as being set.
NULL is just no answer what so ever, it doesn't tell us yes or no and it doesn't tell us the time and it doesn't tell us a blank string got submitted. That's the basic logic in understanding NULL.
It's not about creating wacky functions to get around the problem, it's just changing the way your brain looks at NULL. If it's NULL, assume it's not set as anything. If you are pre-defining variables then pre-define them as 0, FALSE or "" depending on the type of use you intend for them.
Feel free to quote this. It's off the top of my logical head :)
This will retrieve all rows for which the my_date column value is equal to the maximum value of my_date for that userid. This may retrieve multiple rows for the userid where the maximum date is on multiple rows.
select userid,
my_date,
...
from
(
select userid,
my_date,
...
max(my_date) over (partition by userid) max_my_date
from users
)
where my_date = max_my_date
"Analytic functions rock"
Edit: With regard to the first comment ...
"using analytic queries and a self-join defeats the purpose of analytic queries"
There is no self-join in this code. There is instead a predicate placed on the result of the inline view that contains the analytic function -- a very different matter, and completely standard practice.
"The default window in Oracle is from the first row in the partition to the current one"
The windowing clause is only applicable in the presence of the order by clause. With no order by clause, no windowing clause is applied by default and none can be explicitly specified.
The code works.
Try to look at Net2Java It seems to me the best option for automatic (or semi-automatic at least) conversion from C# to Java
Extends the ToastDisplay class with BroadcastReceiver and register the receiver in the manifest file,and dont register your broadcast receiver in onResume() .
<application
....
<receiver android:name=".ToastDisplay">
<intent-filter>
<action android:name="com.unitedcoders.android.broadcasttest.SHOWTOAST"/>
</intent-filter>
</receiver>
</application>
if you want to register in activity then register in the onCreate() method e.g:
onCreate(){
sentSmsBroadcastCome = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
Toast.makeText(context, "SMS SENT!!", Toast.LENGTH_SHORT).show();
}
};
IntentFilter filterSend = new IntentFilter();
filterSend.addAction("m.sent");
registerReceiver(sentSmsBroadcastCome, filterSend);
}
The best way would be to use the unslick
setting or function(depending on your version of slick) as stated in the other answers but that did not work for me. I'm getting some errors from slick that seem to be related to this.
What did work for now, however, is removing the slick-initialized
and slick-slider
classes from the container before reinitializing slick, like so:
function slickCarousel() {
$('.skills_section').removeClass("slick-initialized slick-slider");
$('.skills_section').slick({
infinite: true,
slidesToShow: 3,
slidesToScroll: 1
});
}
Removing the classes doesn't seem to initiate the destroy event(not tested but makes sense) but does cause the later slick()
call to behave properly so as long as you don't have any triggers on destroy, you should be good.
When your website is served by only one web server, for each client-server pair, a session object is created and remains in the memory of the web server. All the requests from the client go to this web server and update this session object. If some data needs to be stored in the session object over the period of interaction, it is stored in this session object and stays there as long as the session exists.
However, if your website is served by multiple web servers which sit behind a load balancer, the load balancer decides which actual (physical) web-server should each request go to. For example, if there are 3 web servers A, B and C behind the load balancer, it is possible that www.mywebsite.com/index.jsp is served from server A, www.mywebsite.com/login.jsp is served from server B and www.mywebsite.com/accoutdetails.php are served from server C.
Now, if the requests are being served from (physically) 3 different servers, each server has created a session object for you and because these session objects sit on three independent boxes, there's no direct way of one knowing what is there in the session object of the other. In order to synchronize between these server sessions, you may have to write/read the session data into a layer which is common to all - like a DB. Now writing and reading data to/from a db for this use-case may not be a good idea. Now, here comes the role of sticky-session.
If the load balancer is instructed to use sticky sessions, all of your interactions will happen with the same physical server, even though other servers are present. Thus, your session object will be the same throughout your entire interaction with this website.
To summarize, In case of Sticky Sessions, all your requests will be directed to the same physical web server while in case of a non-sticky loadbalancer may choose any webserver to serve your requests.
As an example, you may read about Amazon's Elastic Load Balancer and sticky sessions here : http://aws.typepad.com/aws/2010/04/new-elastic-load-balancing-feature-sticky-sessions.html
It's nice to have when you need to use the index for some kind of manipulation and having the current element doesn't suffice. Take for instance a binary tree that's stored in an array. If you have a method that asks you to return a list of tuples that contains each nodes direct children then you need the index.
#0 -> 1,2 : 1 -> 3,4 : 2 -> 5,6 : 3 -> 7,8 ...
nodes = [0,1,2,3,4,5,6,7,8,9,10]
children = []
for i in range(len(nodes)):
leftNode = None
rightNode = None
if i*2 + 1 < len(nodes):
leftNode = nodes[i*2 + 1]
if i*2 + 2 < len(nodes):
rightNode = nodes[i*2 + 2]
children.append((leftNode,rightNode))
return children
Of course if the element you're working on is an object, you can just call a get children method. But yea, you only really need the index if you're doing some sort of manipulation.
I don't think there's any one right answer to this question, but my advice would be to stick with SWT unless you are encountering severe limitations that require such a massive overhaul.
Also, SWT is actually newer and more actively maintained than Swing. (It was originally developed as a replacement for Swing using native components).
The semantically correct character is the Interpunct, also known as middle dot, as HTML entity
·
Example
Home · Photos · About
You could also use the bullet point character, as HTML entity
•
Example
Home • Photos • About
If the string containing the phone number will always start this way (+33 or another country code) you should use regex to parse and get the country code and then use the library to get the country associated to the number.
The spot you have commented as // Code to trig on item change...
will only trigger when the collection object gets changed, such as when it gets set to a new object, or set to null.
With your current implementation of TrulyObservableCollection, to handle the property changed events of your collection, register something to the CollectionChanged
event of MyItemsSource
public MyViewModel()
{
MyItemsSource = new TrulyObservableCollection<MyType>();
MyItemsSource.CollectionChanged += MyItemsSource_CollectionChanged;
MyItemsSource.Add(new MyType() { MyProperty = false });
MyItemsSource.Add(new MyType() { MyProperty = true});
MyItemsSource.Add(new MyType() { MyProperty = false });
}
void MyItemsSource_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
// Handle here
}
Personally I really don't like this implementation. You are raising a CollectionChanged
event that says the entire collection has been reset, anytime a property changes. Sure it'll make the UI update anytime an item in the collection changes, but I see that being bad on performance, and it doesn't seem to have a way to identify what property changed, which is one of the key pieces of information I usually need when doing something on PropertyChanged
.
I prefer using a regular ObservableCollection
and just hooking up the PropertyChanged
events to it's items on CollectionChanged
. Providing your UI is bound correctly to the items in the ObservableCollection
, you shouldn't need to tell the UI to update when a property on an item in the collection changes.
public MyViewModel()
{
MyItemsSource = new ObservableCollection<MyType>();
MyItemsSource.CollectionChanged += MyItemsSource_CollectionChanged;
MyItemsSource.Add(new MyType() { MyProperty = false });
MyItemsSource.Add(new MyType() { MyProperty = true});
MyItemsSource.Add(new MyType() { MyProperty = false });
}
void MyItemsSource_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
if (e.NewItems != null)
foreach(MyType item in e.NewItems)
item.PropertyChanged += MyType_PropertyChanged;
if (e.OldItems != null)
foreach(MyType item in e.OldItems)
item.PropertyChanged -= MyType_PropertyChanged;
}
void MyType_PropertyChanged(object sender, PropertyChangedEventArgs e)
{
if (e.PropertyName == "MyProperty")
DoWork();
}
It's missing in the docs (I'm using version 43), but you can actually use the right and bottom property of the chart area:
var options = {
chartArea:{
left:10,
right:10, // !!! works !!!
bottom:20, // !!! works !!!
top:20,
width:"100%",
height:"100%"
}
};
So it's possible to use full responsive width & height and prevent any axis labels or legends from being cropped.
In the main menu go with following steps
Window -> Show View -> Package Explorer.
You might be confusing compilation from execution. Python has no compilation step! :) As soon as you type python myprogram.py
the program runs and, in your case, tries to connect to an open port 5000, giving an error if no server program is listening there. It sounds like you are familiar with two-step languages, that require compilation to produce an executable — and thus you are confusing Python's runtime compilaint that “I can't find anyone listening on port 5000!” with a compile-time error. But, in fact, your Python code is fine; you just need to bring up a listener before running it!
For the parent: display: table;
For the child: display: table-cell;
Then add vertical-align: middle;
I can make a fiddle but home time now, yay!
OK here is the lovely fiddle: http://jsfiddle.net/lharby/AJAhR/
.parent {
display:table;
}
.child {
display:table-cell;
vertical-align:middle;
text-align:center;
}
var json = jQuery.parseJSON(s); //If you have jQuery.
Since the comment looks cluttered, please use the parse function after enclosing those square brackets inside the quotes.
var s=['{"Select":"11","PhotoCount":"12"}','{"Select":"21","PhotoCount":"22"}'];
Change the above code to
var s='[{"Select":"11","PhotoCount":"12"},{"Select":"21","PhotoCount":"22"}]';
Eg:
$(document).ready(function() {
var s= '[{"Select":"11","PhotoCount":"12"},{"Select":"21","PhotoCount":"22"}]';
s = jQuery.parseJSON(s);
alert( s[0]["Select"] );
});
And then use the parse function. It'll surely work.
EDIT :Extremely sorry that I gave the wrong function name. it's jQuery.parseJSON
Edit (30 April 2020):
Editing since I got an upvote for this answer. There's a browser native function available instead of JQuery (for nonJQuery users), JSON.parse("<json string here>")
That is an HTTP header. You would configure your webserver or webapp to send this header ideally. Perhaps in htaccess or PHP.
Alternatively you might be able to use
<head>...<meta http-equiv="Access-Control-Allow-Origin" content="*">...</head>
I do not know if that would work. Not all HTTP headers can be configured directly in the HTML.
This works as an alternative to many HTTP headers, but see @EricLaw's comment below. This particular header is different.
Caveat
This answer is strictly about how to set headers. I do not know anything about allowing cross domain requests.
About HTTP Headers
Every request and response has headers. The browser sends this to the webserver
GET /index.htm HTTP/1.1
Then the headers
Host: www.example.com
User-Agent: (Browser/OS name and version information)
.. Additional headers indicating supported compression types and content types and other info
Then the server sends a response
Content-type: text/html
Content-length: (number of bytes in file (optional))
Date: (server clock)
Server: (Webserver name and version information)
Additional headers can be configured for example Cache-Control
, it all depends on your language (PHP, CGI, Java, htaccess) and webserver (Apache, etc).
I tried a couple of codes, but end up using something as simple as (in Python 3):
from datetime import datetime
df['difference_in_datetime'] = abs(df['end_datetime'] - df['start_datetime'])
If your start_datetime and end_datetime columns are in datetime64[ns]
format, datetime understands it and return the difference in days + timestamp, which is in timedelta64[ns]
format.
If you want to see only the difference in days, you can separate only the date portion of the start_datetime and end_datetime by using (also works for the time portion):
df['start_date'] = df['start_datetime'].dt.date
df['end_date'] = df['end_datetime'].dt.date
And then run:
df['difference_in_days'] = abs(df['end_date'] - df['start_date'])
In case you are working with silverlight, use this:
System.Windows.Browser.HttpUtility.HtmlEncode(...);
Alternatives:
>>> map(a.__getitem__, b)
[1, 5, 5]
>>> import operator
>>> operator.itemgetter(*b)(a)
(1, 5, 5)
I've been testing v4 for a few days now and .. I'm loving it so far! It just makes sense after a while.
I also had the same question and I found handling it like the following worked best (and might even be how it is intended). It uses state, a ternary operator and <Redirect>
.
In the constructor()
this.state = {
redirectTo: null
}
this.clickhandler = this.clickhandler.bind(this);
In the render()
render(){
return (
<div>
{ this.state.redirectTo ?
<Redirect to={{ pathname: this.state.redirectTo }} /> :
(
<div>
..
<button onClick={ this.clickhandler } />
..
</div>
)
}
In the clickhandler()
this.setState({ redirectTo: '/path/some/where' });
Hope it helps. Let me know.
I was able to write a general contains
function for std::list
and std::vector
,
template<typename T>
bool contains( const list<T>& container, const T& elt )
{
return find( container.begin(), container.end(), elt ) != container.end() ;
}
template<typename T>
bool contains( const vector<T>& container, const T& elt )
{
return find( container.begin(), container.end(), elt ) != container.end() ;
}
// use:
if( contains( yourList, itemInList ) ) // then do something
This cleans up the syntax a bit.
But I could not use template template parameter magic to make this work arbitrary stl containers.
// NOT WORKING:
template<template<class> class STLContainer, class T>
bool contains( STLContainer<T> container, T elt )
{
return find( container.begin(), container.end(), elt ) != container.end() ;
}
Any comments about improving the last answer would be nice.
I tend to agree with split suggestion.
Ive created a "tester" for your problem in perl
#!/usr/bin/perl -w
@strings = ( "1.2.3", "1.2.*", "1.*","*" );
%regexp = ( svrist => qr/(?:(\d+)\.(\d+)\.(\d+)|(\d+)\.(\d+)|(\d+))?(?:\.\*)?/,
onebyone => qr/^(\d+\.)?(\d+\.)?(\*|\d+)$/,
greg => qr/^(\*|\d+(\.\d+){0,2}(\.\*)?)$/,
vonc => qr/^((?:\d+(?!\.\*)\.)+)(\d+)?(\.\*)?$|^(\d+)\.\*$|^(\*|\d+)$/,
ajb => qr/^(?:(\d+)\.)?(?:(\d+)\.)?(\*|\d+)$/,
jrudolph => qr/^(((\d+)\.)?(\d+)\.)?(\d+|\*)$/
);
foreach my $r (keys %regexp){
my $reg = $regexp{$r};
print "Using $r regexp\n";
foreach my $s (@strings){
print "$s : ";
if ($s =~m/$reg/){
my ($main, $maj, $min,$rev,$ex1,$ex2,$ex3) = ("any","any","any","any","any","any","any");
$main = $1 if ($1 && $1 ne "*") ;
$maj = $2 if ($2 && $2 ne "*") ;
$min = $3 if ($3 && $3 ne "*") ;
$rev = $4 if ($4 && $4 ne "*") ;
$ex1 = $5 if ($5 && $5 ne "*") ;
$ex2 = $6 if ($6 && $6 ne "*") ;
$ex3 = $7 if ($7 && $7 ne "*") ;
print "$main $maj $min $rev $ex1 $ex2 $ex3\n";
}else{
print " nomatch\n";
}
}
print "------------------------\n";
}
Current output:
> perl regex.pl
Using onebyone regexp
1.2.3 : 1. 2. 3 any any any any
1.2.* : 1. 2. any any any any any
1.* : 1. any any any any any any
* : any any any any any any any
------------------------
Using svrist regexp
1.2.3 : 1 2 3 any any any any
1.2.* : any any any 1 2 any any
1.* : any any any any any 1 any
* : any any any any any any any
------------------------
Using vonc regexp
1.2.3 : 1.2. 3 any any any any any
1.2.* : 1. 2 .* any any any any
1.* : any any any 1 any any any
* : any any any any any any any
------------------------
Using ajb regexp
1.2.3 : 1 2 3 any any any any
1.2.* : 1 2 any any any any any
1.* : 1 any any any any any any
* : any any any any any any any
------------------------
Using jrudolph regexp
1.2.3 : 1.2. 1. 1 2 3 any any
1.2.* : 1.2. 1. 1 2 any any any
1.* : 1. any any 1 any any any
* : any any any any any any any
------------------------
Using greg regexp
1.2.3 : 1.2.3 .3 any any any any any
1.2.* : 1.2.* .2 .* any any any any
1.* : 1.* any .* any any any any
* : any any any any any any any
------------------------
I got it work by setting size to freeform
Flask will process one request per thread at the same time. If you have 2 processes with 4 threads each, that's 8 concurrent requests.
Flask doesn't spawn or manage threads or processes. That's the responsability of the WSGI gateway (eg. gunicorn).
This property will register an OpenEntityManagerInViewInterceptor
, which registers an EntityManager
to the current thread, so you will have the same EntityManager
until the web request is finished. It has nothing to do with a Hibernate SessionFactory
etc.
You can use radio groups to achieve that functionality:
<input type="radio" name="choice" value="yes" />Yes
<input type="radio" name="choice" value="No" />No
<input type="radio" name="choice" value="null" />null
Allow the ADB to access the network by opening it on the firewall
If you are using winvista and above, go to Windows Advance Firewall under Administrative tool in Control Panel and enable it from there
A somewhat late answer, but with pandas, it is possible to get directly a column of an excel file:
import pandas
df = pandas.read_excel('sample.xls')
#print the column names
print df.columns
#get the values for a given column
values = df['Arm_id'].values
#get a data frame with selected columns
FORMAT = ['Arm_id', 'DSPName', 'Pincode']
df_selected = df[FORMAT]
Make sure you have installed xlrd and pandas:
pip install pandas xlrd
For Activity:
final View activityRootView = findViewById(R.id.activityRoot);
activityRootView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
Rect r = new Rect();
activityRootView.getWindowVisibleDisplayFrame(r);
int heightDiff = view.getRootView().getHeight() - (r.bottom - r.top);
if (heightDiff > 100) {
//enter your code here
}else{
//enter code for hid
}
}
});
For Fragment:
view = inflater.inflate(R.layout.live_chat_fragment, null);
view.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
Rect r = new Rect();
//r will be populated with the coordinates of your view that area still visible.
view.getWindowVisibleDisplayFrame(r);
int heightDiff = view.getRootView().getHeight() - (r.bottom - r.top);
if (heightDiff > 500) { // if more than 100 pixels, its probably a keyboard...
}
}
});
By setting the scale, you decrease the precision. Try NUMBER(16,2).
You can easily do this with the normal "Time" data type - just change the format!
Excels time/date format is simply 1.0 equals 1 full day (starting on 1/1/1900). So 36 hours would be 1.5. If you change the format to [h]:mm
, you'll see 36:00
.
Therefore, if you want to work with durations, you can simply use subtraction, e.g.
A1: Start: 36:00 (=1.5)
A2: End: 60:00 (=2.5)
A3: Duration: =A2-A1 24:00 (=1.0)
Deep Cloning is your answer, which requires implementing the Cloneable
interface and overriding the clone()
method.
public class DummyBean implements Cloneable {
private String dummy;
public void setDummy(String dummy) {
this.dummy = dummy;
}
public String getDummy() {
return dummy;
}
@Override
public Object clone() throws CloneNotSupportedException {
DummyBean cloned = (DummyBean)super.clone();
cloned.setDummy(cloned.getDummy());
// the above is applicable in case of primitive member types like String
// however, in case of non primitive types
// cloned.setNonPrimitiveType(cloned.getNonPrimitiveType().clone());
return cloned;
}
}
You will call it like this
DummyBean dumtwo = dum.clone();
Setting environment variable JAVA_HOME
to JDK 5 or 6 (instead of JDK 7) fixed the error.
i made a little change to this code to save entry of a radio button but unable to save the text which appears in text box after selecting the radio button.
the code is below:-
<!DOCTYPE html>
<html>
<head>
<style>
form * {
display: block;
margin: 10px;
}
</style>
<script language="Javascript" >
function download(filename, text) {
var pom = document.createElement('a');
pom.setAttribute('href', 'data:text/plain;charset=utf-8,' +
encodeURIComponent(text));
pom.setAttribute('download', filename);
pom.style.display = 'none';
document.body.appendChild(pom);
pom.click();
document.body.removeChild(pom);
}
</script>
</head>
<body>
<form onsubmit="download(this['name'].value, this['text'].value)">
<input type="text" name="name" value="test.txt">
<textarea rows=3 cols=50 name="text">PLEASE WRITE ANSWER HERE. </textarea>
<input type="radio" name="radio" value="Option 1" onclick="getElementById('problem').value=this.value;"> Option 1<br>
<input type="radio" name="radio" value="Option 2" onclick="getElementById('problem').value=this.value;"> Option 2<br>
<form onsubmit="download(this['name'].value, this['text'].value)">
<input type="text" name="problem" id="problem">
<input type="submit" value="SAVE">
</form>
</body>
</html>
Usually you hear Task is a higher level concept than thread... and that's what this phrase means:
You can't use Abort/ThreadAbortedException, you should support
cancel event in your "business code" periodically testing token.IsCancellationRequested
flag (also avoid long or timeoutless connections e.g. to db, otherwise you will never get a chance to test this flag). By the similar reason Thread.Sleep(delay)
call should be replaced with Task.Delay(delay, token)
call (passing token inside to have possibility to interrupt delay).
There are no thread's Suspend
and Resume
methods functionality with tasks. Instance of task can't be reused either.
But you get two new tools:
a) continuations
// continuation with ContinueWhenAll - execute the delegate, when ALL
// tasks[] had been finished; other option is ContinueWhenAny
Task.Factory.ContinueWhenAll(
tasks,
() => {
int answer = tasks[0].Result + tasks[1].Result;
Console.WriteLine("The answer is {0}", answer);
}
);
b) nested/child tasks
//StartNew - starts task immediately, parent ends whith child
var parent = Task.Factory.StartNew
(() => {
var child = Task.Factory.StartNew(() =>
{
//...
});
},
TaskCreationOptions.AttachedToParent
);
So system thread is completely hidden from task, but still task's code is executed in the concrete system thread. System threads are resources for tasks and ofcourse there is still thread pool under the hood of task's parallel execution. There can be different strategies how thread get new tasks to execute. Another shared resource TaskScheduler cares about it. Some problems that TaskScheduler solves 1) prefer to execute task and its conitnuation in the same thread minimizing switching cost - aka inline execution) 2) prefer execute tasks in an order they were started - aka PreferFairness 3) more effective distribution of tasks between inactive threads depending on "prior knowledge of tasks activity" - aka Work Stealing. Important: in general "async" is not same as "parallel". Playing with TaskScheduler options you can setup async tasks be executed in one thread synchronously. To express parallel code execution higher abstractions (than Tasks) could be used: Parallel.ForEach
, PLINQ
, Dataflow
.
Tasks are integrated with C# async/await features aka Promise Model, e.g there requestButton.Clicked += async (o, e) => ProcessResponce(await client.RequestAsync(e.ResourceName));
the execution of client.RequestAsync
will not block UI thread. Important: under the hood Clicked
delegate call is absolutely regular (all threading is done by compiler).
That is enough to make a choice. If you need to support Cancel functionality of calling legacy API that tends to hang (e.g. timeoutless connection) and for this case supports Thread.Abort(), or if you are creating multithread background calculations and want to optimize switching between threads using Suspend/Resume, that means to manage parallel execution manually - stay with Thread. Otherwise go to Tasks because of they will give you easy manipulate on groups of them, are integrated into the language and make developers more productive - Task Parallel Library (TPL) .
I think you need something like this:
var TimedQueue = function(defaultDelay){
this.queue = [];
this.index = 0;
this.defaultDelay = defaultDelay || 3000;
};
TimedQueue.prototype = {
add: function(fn, delay){
this.queue.push({
fn: fn,
delay: delay
});
},
run: function(index){
(index || index === 0) && (this.index = index);
this.next();
},
next: function(){
var self = this
, i = this.index++
, at = this.queue[i]
, next = this.queue[this.index]
if(!at) return;
at.fn();
next && setTimeout(function(){
self.next();
}, next.delay||this.defaultDelay);
},
reset: function(){
this.index = 0;
}
}
Test code:
var now = +new Date();
var x = new TimedQueue(2000);
x.add(function(){
console.log('hey');
console.log(+new Date() - now);
});
x.add(function(){
console.log('ho');
console.log(+new Date() - now);
}, 3000);
x.add(function(){
console.log('bye');
console.log(+new Date() - now);
});
x.run();
Note: using alerts stalls javascript execution till you close the alert. It might be more code than you asked for, but this is a robust reusable solution.
You could use the .mayBeJSON(String str) available in the JSONUtils library.
It's quite unpractical to make multiple select with size 1. think about it. I made a fiddle here: https://jsfiddle.net/wqd0yd5m/2/
<select name="test" multiple>
<option>123</option>
<option>456</option>
<option>789</option>
</select>
Try to explore other options such as using checkboxes to achieve your goal.
I am not 100% certain, but I think this does what you want using prop.table. See mostly the last 3 lines. The rest of the code is just creating fake data.
set.seed(1234)
total_bill <- rnorm(50, 25, 3)
tip <- 0.15 * total_bill + rnorm(50, 0, 1)
sex <- rbinom(50, 1, 0.5)
smoker <- rbinom(50, 1, 0.3)
day <- ceiling(runif(50, 0,7))
time <- ceiling(runif(50, 0,3))
size <- 1 + rpois(50, 2)
my.data <- as.data.frame(cbind(total_bill, tip, sex, smoker, day, time, size))
my.data
my.table <- table(my.data$smoker)
my.prop <- prop.table(my.table)
cbind(my.table, my.prop)
I thought I would put this here as it appears to be a popular landing point for those starting to use Google Maps API's. Multiple markers rendered on the client side is probably the downfall of many mapping applications performance wise. It is difficult to benchmark, fix and in some cases even establish there is an issue (due to browser implementation differences, hardware available to the client, mobile devices, the list goes on).
The simplest way to begin to address this issue is to use a marker clustering solution. The basic idea is to group geographically similar locations into a group with the number of points displayed. As the user zooms into the map these groups expand to reveal individual markers beneath.
Perhaps the simplest to implement is the markerclusterer library. A basic implementation would be as follows (after library imports):
<script type="text/javascript">
function initialize() {
var center = new google.maps.LatLng(37.4419, -122.1419);
var map = new google.maps.Map(document.getElementById('map'), {
zoom: 3,
center: center,
mapTypeId: google.maps.MapTypeId.ROADMAP
});
var markers = [];
for (var i = 0; i < 100; i++) {
var location = yourData.location[i];
var latLng = new google.maps.LatLng(location.latitude,
location.longitude);
var marker = new google.maps.Marker({
position: latLng
});
markers.push(marker);
}
var markerCluster = new MarkerClusterer(map, markers);
}
google.maps.event.addDomListener(window, 'load', initialize);
</script>
The markers instead of being added directly to the map are added to an array. This array is then passed to the library which handles complex calculation for you and attached to the map.
Not only do these implementations massively increase client side performance but they also in many cases lead to a simpler and less cluttered UI and easier digestion of data on larger scales.
Other implementations are available from Google.
Hope this aids some of those newer to the nuances of mapping.
If you don't have symbolic links, you could try
tree -iFL 1 [DIR]
-i
makes tree print filenames in each line, without the tree structure.
-f
makes tree print the full path of each file.
-L 1
avoids tree from recursion.
In my case I used blow code for different environment.
document.cookie = name +`=; Path=/; Expires=Thu, 01 Jan 1970 00:00:01 GMT;Domain=.${document.domain.split('.').splice(1).join('.')}`;
I approached the same problem yesterday and found a module called [natsort][1], which solves your problem. Use:
from natsort import natsorted # pip install natsort
# Example list of strings
a = ['1', '10', '2', '3', '11']
[In] sorted(a)
[Out] ['1', '10', '11', '2', '3']
[In] natsorted(a)
[Out] ['1', '2', '3', '10', '11']
# Your array may contain strings
[In] natsorted(['string11', 'string3', 'string1', 'string10', 'string100'])
[Out] ['string1', 'string3', 'string10', 'string11', 'string100']
It also works for dictionaries as an equivalent of sorted
.
[1]: https://pypi.org/project/natsort/
I faced this problem when I first tried python after installing windows10 + python3.7(64bit) + anacconda3 + jupyter notebook.
I solved this problem by refering to "https://vispud.blogspot.com/2019/05/tensorflow200a0-attributeerror-module.html"
I agree with
I believe "Session()" has been removed with TF 2.0.
I inserted two lines. One is tf.compat.v1.disable_eager_execution()
and the other is sess = tf.compat.v1.Session()
My Hello.py is as follows:
import tensorflow as tf
tf.compat.v1.disable_eager_execution()
hello = tf.constant('Hello, TensorFlow!')
sess = tf.compat.v1.Session()
print(sess.run(hello))
According to Reserved IP addresses there are 588,514,304 reserved addresses and since there are 4,294,967,296 (2^32) IPv4 addressess in total, there are 3,706,452,992 public addresses.
And too many addresses in this post.
From the documentation of InetAddress.getByName(String host)
:
The host name can either be a machine name, such as "java.sun.com", or a textual representation of its IP address. If a literal IP address is supplied, only the validity of the address format is checked.
So you can use it.
Try using this:
$(".move_to").on("click", function(e){
e.preventDefault();
$('#contactsForm').attr('action', "/test1").submit();
});
Moving the order in which you use .preventDefault()
might fix your issue. You also didn't use function(e)
so e.preventDefault();
wasn't working.
Here it is working: http://jsfiddle.net/TfTwe/1/ - first of all, click the 'Check action attribute.' link. You'll get an alert saying undefined
. Then click 'Set action attribute.' and click 'Check action attribute.' again. You'll see that the form's action attribute has been correctly set to /test1
.
To achieve a true cross-dissolve transition (old label fading out while new label fading in), you don't want fade to invisible. It would result in unwanted flicker even if text is unchanged.
Use this approach instead:
CATransition *animation = [CATransition animation];
animation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
animation.type = kCATransitionFade;
animation.duration = 0.75;
[aLabel.layer addAnimation:animation forKey:@"kCATransitionFade"];
// This will fade:
aLabel.text = "New"
Also see: Animate UILabel text between two numbers?
Demonstration in iOS 10, 9, 8:
Tested with Xcode 8.2.1 & 7.1, ObjectiveC on iOS 10 to 8.0.
? To download the full project, search for SO-3073520 in Swift Recipes.
This is very late, but I thought it could be useful to someone should they reference this question. I beleive the below JS will do what is asked.
<script>
$(document).ready(function()
{
document.getElementById('select').size=3;
});
</script>
No need to do this:
while ($row = mysqli_fetch_array($result)) {
$rows[] = $row;
}
You can directly do this:
while ($row = mysqli_fetch_array($result)) {
echo "<option value='" . $row['value'] . "'>" . $row['value'] . "</option>";
}
You have to change date class to timestamp.
String s=df.format(c.getTime());
java.util.Date parsedUtilDate = df.parse(s);
java.sql.Timestamp timestamp = new java.sql.Timestamp(parsedUtilDate.getTime());
The error code 0x800A03EC
(or -2146827284) means NAME_NOT_FOUND; in other words, you've asked for something, and Excel can't find it.
This is a generic code, which can apply to lots of things it can't find e.g. using properties which aren't valid at that time like PivotItem.SourceNameStandard
throws this when a PivotItem doesn't have a filter applied. Worksheets["BLAHBLAH"]
throws this, when the sheet doesn't exist etc. In general, you are asking for something with a specific name and it doesn't exist. As for why, that will taking some digging on your part.
Check your sheet definitely does have the Range you are asking for, or that the .CellName
is definitely giving back the name of the range you are asking for.
Duck typing means that an operation does not formally specify the requirements that its operands have to meet, but just tries it out with what is given.
Unlike what others have said, this does not necessarily relate to dynamic languages or inheritance issues.
Example task: Call some method Quack
on an object.
Without using duck-typing, a function f
doing this task has to specify in advance that its argument has to support some method Quack
. A common way is the use of interfaces
interface IQuack {
void Quack();
}
void f(IQuack x) {
x.Quack();
}
Calling f(42)
fails, but f(donald)
works as long as donald
is an instance of a IQuack
-subtype.
Another approach is structural typing - but again, the method Quack()
is formally specified any anything that cannot prove it quack
s in advance will cause a compiler failure.
def f(x : { def Quack() : Unit }) = x.Quack()
We could even write
f :: Quackable a => a -> IO ()
f = quack
in Haskell, where the Quackable
typeclass ensures the existence of our method.
Well, as I said, a duck typing system does not specify requirements but just tries if anything works.
Thus, a dynamic type system as Python's always uses duck typing:
def f(x):
x.Quack()
If f
gets an x
supporting a Quack()
, everything is fine, if not, it will crash at runtime.
But duck typing doesn't imply dynamic typing at all - in fact, there is a very popular but completely static duck typing approach that doesn't give any requirements too:
template <typename T>
void f(T x) { x.Quack(); }
The function doesn't tell in any way that it wants some x
that can Quack
, so instead it just tries at compile time and if everything works, it's fine.
Try this,
$('.nav-list li').click(function() {
$('.nav-list li.active').removeClass('active');
$(this).addClass('active');
});
In your context $(this)
will points to the UL
element not the Li
. Hence you are not getting the expected results.
If any of the parent containers RowDefinition
Height set to "Auto"
also stoppers for scrollbars
Alternatively you may set Height "*"
Which happened in my case.
Simple alert with array data:
NSString *name = [[YourArray objectAtIndex:indexPath.row ]valueForKey:@"Name"];
NSString *msg = [[YourArray objectAtIndex:indexPath.row ]valueForKey:@"message"];
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:name
message:msg
delegate:self
cancelButtonTitle:@"OK"
otherButtonTitles:nil];
[alert show];
You might want to use helper library like http://momentjs.com/ which wraps the native javascript date object for easier manipulations
Then you can do things like:
var day = moment("12-25-1995", "MM-DD-YYYY");
or
var day = moment("25/12/1995", "DD/MM/YYYY");
then operate on the date
day.add('days', 7)
and to get the native javascript date
day.toDate();
Wherever possible, please don't use SCREEN_ORIENTATION_LANDSCAPE or SCREEN_ORIENTATION_PORTRAIT. Instead use:
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR_LANDSCAPE);
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR_PORTRAIT);
These allow the user to orient the device to either landscape orientation, or either portrait orientation, respectively. If you've ever had to play a game with a charging cable being driven into your stomach, then you know exactly why having both orientations available is important to the user.
Note: For phones, at least several that I've checked, it only allows the "right side up" portrait mode, however, SENSOR_PORTRAIT works properly on tablets.
Note: this feature was introduced in API Level 9, so if you must support 8 or lower (not likely at this point), then instead use:
setRequestedOrientation(Build.VERSION.SDK_INT < 9 ?
ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE :
ActivityInfo.SCREEN_ORIENTATION_SENSOR_LANDSCAPE);
setRequestedOrientation(Build.VERSION.SDK_INT < 9 ?
ActivityInfo.SCREEN_ORIENTATION_PORTRAIT :
ActivityInfo.SCREEN_ORIENTATION_SENSOR_PORTRAIT);
I will go for Inner Join in this context. If I would have used contains, it would iterate 6 times despite if the fact that there are just one match.
var desiredNames = new[] { "Pankaj", "Garg" };
var people = new[]
{
new { FirstName="Pankaj", Surname="Garg" },
new { FirstName="Marc", Surname="Gravell" },
new { FirstName="Jeff", Surname="Atwood" }
};
var records = (from p in people join filtered in desiredNames on p.FirstName equals filtered select p.FirstName).ToList();
Suppose I have two list objects.
List 1 List 2
1 12
2 7
3 8
4 98
5 9
6 10
7 6
Using Contains, it will search for each List 1 item in List 2 that means iteration will happen 49 times !!!
I've encountered a situation where I must check that "null" (as a string) must be regarded as empty. Also white space and an actual null must return true. I've finally settled on the following function...
public boolean isEmpty(String testString) {
return ((null==testString) || "".equals((""+testString).trim()) || "null".equals((""+testString).toLowerCase()));
}
You'll want to use the WHERE EXISTS syntax instead.
SELECT *
FROM table1
WHERE EXISTS (SELECT *
FROM table2
WHERE Lead_Key = @Lead_Key
AND table1.CM_PLAN_ID = table2.CM_PLAN_ID
AND table1.Individual_ID = table2.Individual_ID)
Example for Slack.... (use your own web address you generate there)...
curl -X POST -H "Content-type:application/json" --data "{\"text\":\"A New Program Has Just Been Posted!!!\"}" https://hooks.slack.com/services/T7M0PFD42/BAA6NK48Y/123123123123123
If you want to access the variables some sort of dynamic you may use reflection. However Reflection works not for local variables. It is only applyable for class attributes.
A rough quick and dirty example is this:
public class T {
public Integer n1;
public Integer n2;
public Integer n3;
public void accessAttributes() throws IllegalArgumentException, SecurityException, IllegalAccessException,
NoSuchFieldException {
for (int i = 1; i < 4; i++) {
T.class.getField("n" + i).set(this, 5);
}
}
}
You need to improve this code in various ways it is only an example. This is also not considered to be good code.
If want to totally delete it use del
:
del your_variable
Or otherwise, to make the value None
:
your_variable = None
If it's a mutable iterable (lists, sets, dictionaries, etc, but not tuples because they're immutable), you can make it empty like:
your_variable.clear()
Then your_variable
will be empty
Behold, for the simplest answer is mind blowing:
Here is to do it with javascript even without jQuery
element.outerHTML = element.innerHTML
with jQuery element = $('b')[0];
or without jQuery element = document.querySelector('b');
If you want it as a function:
function unwrap(selector) {
var nodelist = document.querySelectorAll(selector);
Array.prototype.forEach.call(nodelist, function(item,i){
item.outerHTML = item.innerHTML; // or item.innerText if you want to remove all inner html tags
})
}
unwrap('b')
This should work in all major browser including old IE. in recent browser, we can even call forEach right on the nodelist.
function unwrap(selector) {
document.querySelectorAll('b').forEach( (item,i) => {
item.outerHTML = item.innerText;
} )
}
In cross-platform, lowest-common-denominator sh
you use:
#!/bin/sh
value=`cat config.txt`
echo "$value"
In bash
or zsh
, to read a whole file into a variable without invoking cat
:
#!/bin/bash
value=$(<config.txt)
echo "$value"
Invoking cat
in bash
or zsh
to slurp a file would be considered a Useless Use of Cat.
Note that it is not necessary to quote the command substitution to preserve newlines.
See: Bash Hacker's Wiki - Command substitution - Specialities.
You have a couple of problems here.
First, the XSD has an issue where an element is both named or referenced; in your case should be referenced.
Change:
<xsd:element name="stock" ref="Stock" minOccurs="1" maxOccurs="unbounded"/>
To:
<xsd:element name="stock" type="Stock" minOccurs="1" maxOccurs="unbounded"/>
And:
Stock
Stock
So:
<xsd:element name="Stock">
<xsd:complexType>
To:
<xsd:complexType name="Stock">
Make sure you fix the xml closing tags.
The second problem is that the correct way to reference an external XSD is to use XSD schema with import/include within a wsdl:types element. wsdl:import is reserved to referencing other WSDL files. More information is available by going through the WS-I specification, section WSDL and Schema Import. Based on WS-I, your case would be:
INCORRECT: (the way you showed it)
<?xml version="1.0" encoding="UTF-8"?>
<definitions targetNamespace="http://stock.com/schemas/services/stock/wsdl"
.....xmlns:external="http://stock.com/schemas/services/stock"
<import namespace="http://stock.com/schemas/services/stock" location="Stock.xsd" />
<message name="getStockQuoteResp">
<part name="parameters" element="external:getStockQuoteResponse" />
</message>
</definitions>
CORRECT:
<?xml version="1.0" encoding="UTF-8"?>
<definitions targetNamespace="http://stock.com/schemas/services/stock/wsdl"
.....xmlns:external="http://stock.com/schemas/services/stock"
<types>
<schema xmlns="http://www.w3.org/2001/XMLSchema">
<import namespace="http://stock.com/schemas/services/stock" schemaLocation="Stock.xsd" />
</schema>
</types>
<message name="getStockQuoteResp">
<part name="parameters" element="external:getStockQuoteResponse" />
</message>
</definitions>
SOME processors may support both syntaxes. The XSD you put out shows issues, make sure you first validate the XSD.
It would be better if you go the WS-I way when it comes to WSDL authoring.
Other issues may be related to the use of relative vs. absolute URIs in locating external content.
I just had this issue and thought I'd share what I thought was an easier way around this.
Open git-bash and run the same command with the addition of -C since you're commenting in your email address: ssh-keygen -t rsa -C "[email protected]"
command. That's it.
git-bash should have been installed when you installed git. If you can't find it you can check C:\Program Files\Git\Git Bash
The first time I did this it failed to create the .ssh folder for me so I had to open a standard Command Prompt and mkdir C:\Users\yourusername\.ssh
it work for me
You can use :
cell.selectionStyle = UITableViewCellSelectionStyleNone;
in the cell for row at index path method of your UITableView.
Also you can use :
[tableView deselectRowAtIndexPath:indexPath animated:NO];
in the tableview didselectrowatindexpath method.
The main difference is that
substr() allows you to specify the maximum length to return
substring() allows you to specify the indices and the second argument is NOT inclusive
There are some additional subtleties between substr() and substring() such as the handling of equal arguments and negative arguments. Also note substring() and slice() are similar but not always the same.
//*** length vs indices:
"string".substring(2,4); // "ri" (start, end) indices / second value is NOT inclusive
"string".substr(2,4); // "ring" (start, length) length is the maximum length to return
"string".slice(2,4); // "ri" (start, end) indices / second value is NOT inclusive
//*** watch out for substring swap:
"string".substring(3,2); // "r" (swaps the larger and the smaller number)
"string".substr(3,2); // "in"
"string".slice(3,2); // "" (just returns "")
//*** negative second argument:
"string".substring(2,-4); // "st" (converts negative numbers to 0, then swaps first and second position)
"string".substr(2,-4); // ""
"string".slice(2,-4); // ""
//*** negative first argument:
"string".substring(-3); // "string"
"string".substr(-3); // "ing" (read from end of string)
"string".slice(-3); // "ing"
What you are looking for can be found here. It may exist a more elegant way to accomplish that, but one possible approach is
final Duration timeout = Duration.ofSeconds(30);
ExecutorService executor = Executors.newSingleThreadExecutor();
final Future<String> handler = executor.submit(new Callable() {
@Override
public String call() throws Exception {
return requestDataFromModem();
}
});
try {
handler.get(timeout.toMillis(), TimeUnit.MILLISECONDS);
} catch (TimeoutException e) {
handler.cancel(true);
}
executor.shutdownNow();
final Duration timeout = Duration.ofSeconds(30);
ScheduledExecutorService executor = Executors.newScheduledThreadPool(1);
final Future<String> handler = executor.submit(new Callable() {
@Override
public String call() throws Exception {
return requestDataFromModem();
}
});
executor.schedule(new Runnable() {
@Override
public void run(){
handler.cancel(true);
}
}, timeout.toMillis(), TimeUnit.MILLISECONDS);
executor.shutdownNow();
Those are only a draft so that you can get the main idea.
I have created a small demo to show how resize properties work. I hope it will help you and others as well.
.resizeable {_x000D_
resize: both;_x000D_
}_x000D_
_x000D_
.noResizeable {_x000D_
resize: none;_x000D_
}_x000D_
_x000D_
.resizeable_V {_x000D_
resize: vertical;_x000D_
}_x000D_
_x000D_
.resizeable_H {_x000D_
resize: horizontal;_x000D_
}
_x000D_
<textarea class="resizeable" rows="5" cols="20" name="resizeable" title="This is Resizable.">_x000D_
This is Resizable. Lorem ipsum, or lipsum as it is sometimes known, is dummy text used in laying out print, graphic or web designs. The passage is attributed to an unknown typesetter in the 15th century who is thought to have scrambled parts of Cicero's De Finibus Bonorum et Malorum for use in a type specimen book._x000D_
</textarea>_x000D_
_x000D_
<textarea class="noResizeable" rows="5" title="This will not Resizable. " cols="20" name="resizeable">_x000D_
This will not Resizable. Lorem ipsum, or lipsum as it is sometimes known, is dummy text used in laying out print, graphic or web designs. The passage is attributed to an unknown typesetter in the 15th century who is thought to have scrambled parts of Cicero's De Finibus Bonorum et Malorum for use in a type specimen book._x000D_
</textarea>_x000D_
_x000D_
<textarea class="resizeable_V" title="This is Vertically Resizable." rows="5" cols="20" name="resizeable">_x000D_
This is Vertically Resizable. Lorem ipsum, or lipsum as it is sometimes known, is dummy text used in laying out print, graphic or web designs. The passage is attributed to an unknown typesetter in the 15th century who is thought to have scrambled parts of Cicero's De Finibus Bonorum et Malorum for use in a type specimen book._x000D_
</textarea>_x000D_
_x000D_
<textarea class="resizeable_H" title="This is Horizontally Resizable." rows="5" cols="20" name="resizeable">_x000D_
This is Horizontally Resizable. Lorem ipsum, or lipsum as it is sometimes known, is dummy text used in laying out print, graphic or web designs. The passage is attributed to an unknown typesetter in the 15th century who is thought to have scrambled parts of Cicero's De Finibus Bonorum et Malorum for use in a type specimen book._x000D_
</textarea>
_x000D_
I downloaded msvcr120d.dll
and msvcp120d.dll
for 32-bit version and then, I put them into Debug
folder of my project. It worked well. (My computer is 64-bit version)
This is the most complicated scenario I can imagine: I have a PDF file created with Ilustrator and modified with Acrobat to have AcroFields (AcroForm) that I'm going to fill with data with this Java code, the result of that PDF file with the data in the fields is modified adding a Document.
Actually in this case I'm dynamically generating a background that is added to a PDF that is also dynamically generated with a Document with an unknown amount of data or pages.
I'm using JBoss and this code is inside a JSP file (should work in any JSP webserver).
Note: if you are using IExplorer you must submit a HTTP form with POST method to be able to download the file. If not you are going to see the PDF code in the screen. This does not happen in Chrome or Firefox.
<%@ page import="java.io.*, com.lowagie.text.*, com.lowagie.text.pdf.*" %><%
response.setContentType("application/download");
response.setHeader("Content-disposition","attachment;filename=listaPrecios.pdf" );
// -------- FIRST THE PDF WITH THE INFO ----------
String str = "";
// lots of words
for(int i = 0; i < 800; i++) str += "Hello" + i + " ";
// the document
Document doc = new Document( PageSize.A4, 25, 25, 200, 70 );
ByteArrayOutputStream streamDoc = new ByteArrayOutputStream();
PdfWriter.getInstance( doc, streamDoc );
// lets start filling with info
doc.open();
doc.add(new Paragraph(str));
doc.close();
// the beauty of this is the PDF will have all the pages it needs
PdfReader frente = new PdfReader(streamDoc.toByteArray());
PdfStamper stamperDoc = new PdfStamper( frente, response.getOutputStream());
// -------- THE BACKGROUND PDF FILE -------
// in JBoss the file has to be in webinf/classes to be readed this way
PdfReader fondo = new PdfReader("listaPrecios.pdf");
ByteArrayOutputStream streamFondo = new ByteArrayOutputStream();
PdfStamper stamperFondo = new PdfStamper( fondo, streamFondo);
// the acroform
AcroFields form = stamperFondo.getAcroFields();
// the fields
form.setField("nombre","Avicultura");
form.setField("descripcion","Esto describe para que sirve la lista ");
stamperFondo.setFormFlattening(true);
stamperFondo.close();
// our background is ready
PdfReader fondoEstampado = new PdfReader( streamFondo.toByteArray() );
// ---- ADDING THE BACKGROUND TO EACH DATA PAGE ---------
PdfImportedPage pagina = stamperDoc.getImportedPage(fondoEstampado,1);
int n = frente.getNumberOfPages();
PdfContentByte background;
for (int i = 1; i <= n; i++) {
background = stamperDoc.getUnderContent(i);
background.addTemplate(pagina, 0, 0);
}
// after this everithing will be written in response.getOutputStream()
stamperDoc.close();
%>
There is another solution much simpler, and solves your problem. It depends the amount of text you want to add.
// read the file
PdfReader fondo = new PdfReader("listaPrecios.pdf");
PdfStamper stamper = new PdfStamper( fondo, response.getOutputStream());
PdfContentByte content = stamper.getOverContent(1);
// add text
ColumnText ct = new ColumnText( content );
// this are the coordinates where you want to add text
// if the text does not fit inside it will be cropped
ct.setSimpleColumn(50,500,500,50);
ct.setText(new Phrase(str, titulo1));
ct.go();
This sounds like a ClassLoader conflict. I'd bet you have the javax.persistence api 1.x on the classpath somewhere, whereas Spring is trying to access ValidationMode
, which was only introduced in JPA 2.0.
Since you use Maven, do mvn dependency:tree
, find the artifact:
<dependency>
<groupId>javax.persistence</groupId>
<artifactId>persistence-api</artifactId>
<version>1.0</version>
</dependency>
And remove it from your setup. (See Excluding Dependencies)
AFAIK there is no such general distribution for JPA 2, but you can use this Hibernate-specific version:
<dependency>
<groupId>org.hibernate.javax.persistence</groupId>
<artifactId>hibernate-jpa-2.0-api</artifactId>
<version>1.0.1.Final</version>
</dependency>
OK, since that doesn't work, you still seem to have some JPA-1 version in there somewhere. In a test method, add this code:
System.out.println(EntityManager.class.getProtectionDomain()
.getCodeSource()
.getLocation());
See where that points you and get rid of that artifact.
Ahh, now I finally see the problem. Get rid of this:
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jpa</artifactId>
<version>2.0.8</version>
</dependency>
and replace it with
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>3.2.5.RELEASE</version>
</dependency>
On a different note, you should set all test libraries (spring-test, easymock etc.) to
<scope>test</scope>
cvc-elt.1: Cannot find the declaration of element 'Root'. [7]
Your schemaLocation
attribute on the root element should be xsi:schemaLocation
, and you need to fix it to use the right namespace.
You should probably change the targetNamespace
of the schema and the xmlns
of the document to http://myNameSpace.com
(since namespaces are supposed to be valid URIs, which Test.Namespace
isn't, though urn:Test.Namespace
would be ok). Once you do that it should find the schema. The point is that all three of the schema's target namespace, the document's namespace, and the namespace for which you're giving the schema location must be the same.
(though it still won't validate as your <element2>
contains an <element3>
in the document where the schema expects item
)
Building 4 edges solution basing on @Eagorajose's answer with shorthand syntax:
background: linear-gradient(to right, #000 33%, #fff 0%) top/10px 1px repeat-x, /* top */
linear-gradient(#000 33%, #fff 0%) right/1px 10px repeat-y, /* right */
linear-gradient(to right, #000 33%, #fff 0%) bottom/10px 1px repeat-x, /* bottom */
linear-gradient(#000 33%, #fff 0%) left/1px 10px repeat-y; /* left */
#page {_x000D_
background: linear-gradient(to right, #000 33%, #fff 0%) top/10px 1px repeat-x, /* top */_x000D_
linear-gradient(#000 33%, #fff 0%) right/1px 10px repeat-y, /* right */_x000D_
linear-gradient(to right, #000 33%, #fff 0%) bottom/10px 1px repeat-x, /* bottom */_x000D_
linear-gradient(#000 33%, #fff 0%) left/1px 10px repeat-y; /* left */_x000D_
_x000D_
width: 100px;_x000D_
height: 100px;_x000D_
}
_x000D_
<div id="page"></div>
_x000D_
Simple one. F8 : Go to next build error.
Found that now it will work in any sort of list window (the ones that cluster together at the bottom usually.
Updated Answer for Changed Documentation
The information is now spread across several guides in the documentation. Here's a list of required reading:
The answer to this question now depends entirely on whether you're using an ARC-managed application (the modern default for new projects) or forcing manual memory management.
Assign vs. Weak - Use assign to set a property's pointer to the address of the object without retaining it or otherwise curating it; use weak to have the property point to nil automatically if the object assigned to it is deallocated. In most cases you'll want to use weak so you're not trying to access a deallocated object (illegal access of a memory address - "EXC_BAD_ACCESS
") if you don't perform proper cleanup.
Retain vs. Copy - Declared properties use retain by default (so you can simply omit it altogether) and will manage the object's reference count automatically whether another object is assigned to the property or it's set to nil; Use copy to automatically send the newly-assigned object a -copy
message (which will create a copy of the passed object and assign that copy to the property instead - useful (even required) in some situations where the assigned object might be modified after being set as a property of some other object (which would mean that modification/mutation would apply to the property as well).
To perform a linear regression between two vectors x
and y
follow these steps:
[p,err] = polyfit(x,y,1); % First order polynomial
y_fit = polyval(p,x,err); % Values on a line
y_dif = y - y_fit; % y value difference (residuals)
SSdif = sum(y_dif.^2); % Sum square of difference
SStot = (length(y)-1)*var(y); % Sum square of y taken from variance
rsq = 1-SSdif/SStot; % Correlation 'r' value. If 1.0 the correlelation is perfect
For x=[10;200;7;150]
and y=[0.001;0.45;0.0007;0.2]
I get rsq = 0.9181
.
Reference URL: http://www.mathworks.com/help/matlab/data_analysis/linear-regression.html
You could use the TIMEDIFF()
and the TIME_TO_SEC()
functions as follows:
SELECT TIME_TO_SEC(TIMEDIFF('2010-08-20 12:01:00', '2010-08-20 12:00:00')) diff;
+------+
| diff |
+------+
| 60 |
+------+
1 row in set (0.00 sec)
You could also use the UNIX_TIMESTAMP()
function as @Amber suggested in an other answer:
SELECT UNIX_TIMESTAMP('2010-08-20 12:01:00') -
UNIX_TIMESTAMP('2010-08-20 12:00:00') diff;
+------+
| diff |
+------+
| 60 |
+------+
1 row in set (0.00 sec)
If you are using the TIMESTAMP
data type, I guess that the UNIX_TIMESTAMP()
solution would be slightly faster, since TIMESTAMP
values are already stored as an integer representing the number of seconds since the epoch (Source). Quoting the docs:
When
UNIX_TIMESTAMP()
is used on aTIMESTAMP
column, the function returns the internal timestamp value directly, with no implicit “string-to-Unix-timestamp” conversion.Keep in mind that
TIMEDIFF()
return data type ofTIME
.TIME
values may range from '-838:59:59' to '838:59:59' (roughly 34.96 days)
If you only want to read the first 999,999 (non-header) rows:
read_csv(..., nrows=999999)
If you only want to read rows 1,000,000 ... 1,999,999
read_csv(..., skiprows=1000000, nrows=999999)
nrows : int, default None Number of rows of file to read. Useful for reading pieces of large files*
skiprows : list-like or integer Row numbers to skip (0-indexed) or number of rows to skip (int) at the start of the file
and for large files, you'll probably also want to use chunksize:
chunksize : int, default None Return TextFileReader object for iteration
I think (I'm not certain) that foreign key constraints won't do precisely what you want given your table design. Perhaps the best thing to do is to define a stored procedure that will delete a category the way you want, and then call that procedure whenever you want to delete a category.
CREATE PROCEDURE `DeleteCategory` (IN category_ID INT)
LANGUAGE SQL
NOT DETERMINISTIC
MODIFIES SQL DATA
SQL SECURITY DEFINER
BEGIN
DELETE FROM
`products`
WHERE
`id` IN (
SELECT `products_id`
FROM `categories_products`
WHERE `categories_id` = category_ID
)
;
DELETE FROM `categories`
WHERE `id` = category_ID;
END
You also need to add the following foreign key constraints to the linking table:
ALTER TABLE `categories_products` ADD
CONSTRAINT `Constr_categoriesproducts_categories_fk`
FOREIGN KEY `categories_fk` (`categories_id`) REFERENCES `categories` (`id`)
ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT `Constr_categoriesproducts_products_fk`
FOREIGN KEY `products_fk` (`products_id`) REFERENCES `products` (`id`)
ON DELETE CASCADE ON UPDATE CASCADE
The CONSTRAINT clause can, of course, also appear in the CREATE TABLE statement.
Having created these schema objects, you can delete a category and get the behaviour you want by issuing CALL DeleteCategory(category_ID)
(where category_ID is the category to be deleted), and it will behave how you want. But don't issue a normal DELETE FROM
query, unless you want more standard behaviour (i.e. delete from the linking table only, and leave the products
table alone).
First of all this code snippet
char *addr=NULL;
strcpy(addr,retstring().c_str());
is invalid because you did not allocate memory where you are going to copy retstring().c_str().
As for the error message then it is clear enough. The type of expression data.str().c_str() is const char * but the third parameter of the function is declared as char *. You may not assign an object of type const char * to an object of type char *. Either the function should define the third parameter as const char * if it does not change the object pointed by the third parameter or you may not pass argument of type const char *.
Yes you can run JavaFX application on iOS, android, desktop, RaspberryPI (no windows8 mobile yet).
Work in Action :
We did it! JavaFX8 multimedia project on iPad, Android, Windows and Mac!
Ensemble8 Javafx8 Android Demo
My Sample JavaFX application Running on Raspberry Pi
My Sample Application Running on Android
Dev Resources :
Android :
Building and deploying JavaFX Applications on Android
iOS :
NetBeans support for JavaFX for iOS is out!
Develop a JavaFX + iOS app with RoboVM + e(fx)clipse tools in 10 minutes
If you are going to develop serious applications here is some more info
Misc :
At present for JavaFX Oracle priority list is Desktop (Mac,windows,linux) and Embedded (Raspberry Pi, beagle Board etc) .For iOS/android oracle done most of the hardwork and opnesourced javafxports of these platforms as part of OpenJFX ,but there is no JVM from oracle for ios/android.Community is putting all together by filling missing piece(JVM) for ios/android,Community made good progress in running JavaFX on ios (RoboVM) / android(DalvikVM). If you want you can also contribute to the community by sponsoring (Become a RoboVM sponsor) or start developing apps and report issues.
Edit 06/23/2014 :
Johan Vos created a website for javafx ports JavaFX on Mobile and Tablets,check this for updated info ..
#alertlist li:hover:after,#alertlist li.selected:after
{
position:absolute;
top: 0;
right:-10px;
bottom:0;
border-top: 10px solid transparent;
border-bottom: 10px solid transparent;
border-left: 10px solid #303030;
content: "";
}?
EDIT: Putting the right solution first, originally from this question. It's the only one that searches relative to the module directory:
use FindBin; # locate this script
use lib "$FindBin::Bin/.."; # use the parent directory
use yourlib;
There's many other ways that search for libraries relative to the current directory. You can invoke perl with the -I argument, passing the directory of the other module:
perl -I.. yourscript.pl
You can include a line near the top of your perl script:
use lib '..';
You can modify the environment variable PERL5LIB before you run the script:
export PERL5LIB=$PERL5LIB:..
The push(@INC) strategy can also work, but it has to be wrapped in BEGIN{} to make sure that the push is run before the module search:
BEGIN {push @INC, '..'}
use yourlib;
I'm late to this party, but adding my own experience so I can find it again later :)
I ran into this problem after upgrading the android sdk and eclipse ad-ins. No upgrade goes unpunished!
The problem for me was related to library projects, my app references both standard java projects and android library projects. I noticed the Java Build Path settings were including the android library projects src and res folders in the Source list (upvotes to everyone that mention bin in source being issue, src and res was also an issue.)
So the solution was:
It was along way to piece all that together from the other solutions! Phew!
There is no documented LEFT() function in Oracle. Find the full set here.
Probably what you have is a user-defined function. You can check that easily enough by querying the data dictionary:
select * from all_objects
where object_name = 'LEFT'
But there is the question of why the stored procedure works and the query doesn't. One possible solution is that the stored procedure is owned by another schema, which also owns the LEFT() function. They have granted rights on the procedure but not its dependencies. This works because stored procedures run with DEFINER privileges by default, so you run the stored procedure as if you were its owner.
If this is so then the data dictionary query I listed above won't help you: it will only return rows for objects you have rights on. In which case you will need to run the query as the stored procedure's owner or connect as a user with the rights to query DBA_OBJECTS instead.
Another option is to use mouse, right click on "x reference". Context menu "CodeLens Options" will appear, saving all the navigation headache.
Well, I think you can assign it to a new object. Something like:
var v = new object();
rtrim
function
rtrim($my_string,',');
Second parameter indicates that comma to be deleted from right side.
This answer is all about authorization and it is a complement of my previous answer about authentication
Why another answer? I attempted to expand my previous answer by adding details on how to support JSR-250 annotations. However the original answer became the way too long and exceeded the maximum length of 30,000 characters. So I moved the whole authorization details to this answer, keeping the other answer focused on performing authentication and issuing tokens.
@Secured
annotationBesides authentication flow shown in the other answer, role-based authorization can be supported in the REST endpoints.
Create an enumeration and define the roles according to your needs:
public enum Role {
ROLE_1,
ROLE_2,
ROLE_3
}
Change the @Secured
name binding annotation created before to support roles:
@NameBinding
@Retention(RUNTIME)
@Target({TYPE, METHOD})
public @interface Secured {
Role[] value() default {};
}
And then annotate the resource classes and methods with @Secured
to perform the authorization. The method annotations will override the class annotations:
@Path("/example")
@Secured({Role.ROLE_1})
public class ExampleResource {
@GET
@Path("{id}")
@Produces(MediaType.APPLICATION_JSON)
public Response myMethod(@PathParam("id") Long id) {
// This method is not annotated with @Secured
// But it's declared within a class annotated with @Secured({Role.ROLE_1})
// So it only can be executed by the users who have the ROLE_1 role
...
}
@DELETE
@Path("{id}")
@Produces(MediaType.APPLICATION_JSON)
@Secured({Role.ROLE_1, Role.ROLE_2})
public Response myOtherMethod(@PathParam("id") Long id) {
// This method is annotated with @Secured({Role.ROLE_1, Role.ROLE_2})
// The method annotation overrides the class annotation
// So it only can be executed by the users who have the ROLE_1 or ROLE_2 roles
...
}
}
Create a filter with the AUTHORIZATION
priority, which is executed after the AUTHENTICATION
priority filter defined previously.
The ResourceInfo
can be used to get the resource Method
and resource Class
that will handle the request and then extract the @Secured
annotations from them:
@Secured
@Provider
@Priority(Priorities.AUTHORIZATION)
public class AuthorizationFilter implements ContainerRequestFilter {
@Context
private ResourceInfo resourceInfo;
@Override
public void filter(ContainerRequestContext requestContext) throws IOException {
// Get the resource class which matches with the requested URL
// Extract the roles declared by it
Class<?> resourceClass = resourceInfo.getResourceClass();
List<Role> classRoles = extractRoles(resourceClass);
// Get the resource method which matches with the requested URL
// Extract the roles declared by it
Method resourceMethod = resourceInfo.getResourceMethod();
List<Role> methodRoles = extractRoles(resourceMethod);
try {
// Check if the user is allowed to execute the method
// The method annotations override the class annotations
if (methodRoles.isEmpty()) {
checkPermissions(classRoles);
} else {
checkPermissions(methodRoles);
}
} catch (Exception e) {
requestContext.abortWith(
Response.status(Response.Status.FORBIDDEN).build());
}
}
// Extract the roles from the annotated element
private List<Role> extractRoles(AnnotatedElement annotatedElement) {
if (annotatedElement == null) {
return new ArrayList<Role>();
} else {
Secured secured = annotatedElement.getAnnotation(Secured.class);
if (secured == null) {
return new ArrayList<Role>();
} else {
Role[] allowedRoles = secured.value();
return Arrays.asList(allowedRoles);
}
}
}
private void checkPermissions(List<Role> allowedRoles) throws Exception {
// Check if the user contains one of the allowed roles
// Throw an Exception if the user has not permission to execute the method
}
}
If the user has no permission to execute the operation, the request is aborted with a 403
(Forbidden).
To know the user who is performing the request, see my previous answer. You can get it from the SecurityContext
(which should be already set in the ContainerRequestContext
) or inject it using CDI, depending on the approach you go for.
If a @Secured
annotation has no roles declared, you can assume all authenticated users can access that endpoint, disregarding the roles the users have.
Alternatively to defining the roles in the @Secured
annotation as shown above, you could consider JSR-250 annotations such as @RolesAllowed
, @PermitAll
and @DenyAll
.
JAX-RS doesn't support such annotations out-of-the-box, but it could be achieved with a filter. Here are a few considerations to keep in mind if you want to support all of them:
@DenyAll
on the method takes precedence over @RolesAllowed
and @PermitAll
on the class.@RolesAllowed
on the method takes precedence over @PermitAll
on the class.@PermitAll
on the method takes precedence over @RolesAllowed
on the class.@DenyAll
can't be attached to classes.@RolesAllowed
on the class takes precedence over @PermitAll
on the class.So an authorization filter that checks JSR-250 annotations could be like:
@Provider
@Priority(Priorities.AUTHORIZATION)
public class AuthorizationFilter implements ContainerRequestFilter {
@Context
private ResourceInfo resourceInfo;
@Override
public void filter(ContainerRequestContext requestContext) throws IOException {
Method method = resourceInfo.getResourceMethod();
// @DenyAll on the method takes precedence over @RolesAllowed and @PermitAll
if (method.isAnnotationPresent(DenyAll.class)) {
refuseRequest();
}
// @RolesAllowed on the method takes precedence over @PermitAll
RolesAllowed rolesAllowed = method.getAnnotation(RolesAllowed.class);
if (rolesAllowed != null) {
performAuthorization(rolesAllowed.value(), requestContext);
return;
}
// @PermitAll on the method takes precedence over @RolesAllowed on the class
if (method.isAnnotationPresent(PermitAll.class)) {
// Do nothing
return;
}
// @DenyAll can't be attached to classes
// @RolesAllowed on the class takes precedence over @PermitAll on the class
rolesAllowed =
resourceInfo.getResourceClass().getAnnotation(RolesAllowed.class);
if (rolesAllowed != null) {
performAuthorization(rolesAllowed.value(), requestContext);
}
// @PermitAll on the class
if (resourceInfo.getResourceClass().isAnnotationPresent(PermitAll.class)) {
// Do nothing
return;
}
// Authentication is required for non-annotated methods
if (!isAuthenticated(requestContext)) {
refuseRequest();
}
}
/**
* Perform authorization based on roles.
*
* @param rolesAllowed
* @param requestContext
*/
private void performAuthorization(String[] rolesAllowed,
ContainerRequestContext requestContext) {
if (rolesAllowed.length > 0 && !isAuthenticated(requestContext)) {
refuseRequest();
}
for (final String role : rolesAllowed) {
if (requestContext.getSecurityContext().isUserInRole(role)) {
return;
}
}
refuseRequest();
}
/**
* Check if the user is authenticated.
*
* @param requestContext
* @return
*/
private boolean isAuthenticated(final ContainerRequestContext requestContext) {
// Return true if the user is authenticated or false otherwise
// An implementation could be like:
// return requestContext.getSecurityContext().getUserPrincipal() != null;
}
/**
* Refuse the request.
*/
private void refuseRequest() {
throw new AccessDeniedException(
"You don't have permissions to perform this action.");
}
}
Note: The above implementation is based on the Jersey RolesAllowedDynamicFeature
. If you use Jersey, you don't need to write your own filter, just use the existing implementation.
A counting semaphore. Conceptually, a semaphore maintains a set of permits. Each
acquire()
blocks if necessary until a permit is available, and then takes it. Eachrelease()
adds a permit, potentially releasing a blocking acquirer. However, no actual permit objects are used; the Semaphore just keeps a count of the number available and acts accordingly.
Semaphores are often used to restrict the number of threads than can access some (physical or logical) resource
Java does not have built-in Mutex API. But it can be implemented as binary semaphore.
A semaphore initialized to one, and which is used such that it only has at most one permit available, can serve as a mutual exclusion lock. This is more commonly known as a binary semaphore, because it only has two states: one permit available, or zero permits available.
When used in this way, the binary semaphore has the property (unlike many Lock implementations), that the "lock" can be released by a thread other than the owner (as semaphores have no notion of ownership). This can be useful in some specialized contexts, such as deadlock recovery.
So key differences between Semaphore and Mutex:
Semaphore restrict number of threads to access a resource throuhg permits. Mutex allows only one thread to access resource.
No threads owns Semaphore. Threads can update number of permits by calling acquire()
and release()
methods. Mutexes should be unlocked only by the thread holding the lock.
When a mutex is used with condition variables, there is an implied bracketing—it is clear which part of the program is being protected. This is not necessarily the case for a semaphore, which might be called the go to of concurrent programming—it is powerful but too easy to use in an unstructured, indeterminate way.
In Express 4.x, there is an attachment()
method to Response
:
res.attachment();
// Content-Disposition: attachment
res.attachment('path/to/logo.png');
// Content-Disposition: attachment; filename="logo.png"
// Content-Type: image/png
myDiv.textContent = arbitraryHtmlString
as @Dan pointed out, do not use innerHTML, even in nodes you don't append to the document because deffered callbacks and scripts are always executed. You can check this https://gomakethings.com/preventing-cross-site-scripting-attacks-when-using-innerhtml-in-vanilla-javascript/ for more info.
Usually you have more than one element in your CardView
, so that you need an layout view to wrap and organize them.
You can add an OnClickListener
to that layout view.
1. Add an id to your layout. In this case a LinearLayout
<android.support.v7.widget.CardView
.....>
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/card_view_linearLayout">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="name"
android:id="@+id/card_view_name" />
...
</LinearLayout>
</android.support.v7.widget.CardView>
$
2. Get the layout view in your inner ViewHolder
class.
public static class ViewHolder extends RecyclerView.ViewHolder{
private TextView nameView;
...
private LinearLayout linearLayout;
public ViewHolder(View itemView) {
super(itemView);
nameView = (TextView)itemView.findViewById(R.id.card_view_name);
...
linearLayout = (LinearLayout)itemView.findViewById(R.id.card_view_linearLayout);
}
}
$
3. Add the listener to your layout in onBindViewHolder
and use a callback to send data to the Activity
or Fragment
(not tested).
@Override
public void onBindViewHolder(TrackAdapter.ViewHolder holder, final int position) {
String str = mStringList.get(position);
holder.nameView.setText(str);
...
holder.linearLayout.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
callback.itemCallback(mStringList.get(position));
}
});
}
how to use callbacks is another story
C++03's categories are too restricted to capture the introduction of rvalue references correctly into expression attributes.
With the introduction of them, it was said that an unnamed rvalue reference evaluates to an rvalue, such that overload resolution would prefer rvalue reference bindings, which would make it select move constructors over copy constructors. But it was found that this causes problems all around, for example with Dynamic Types and with qualifications.
To show this, consider
int const&& f();
int main() {
int &&i = f(); // disgusting!
}
On pre-xvalue drafts, this was allowed, because in C++03, rvalues of non-class types are never cv-qualified. But it is intended that const
applies in the rvalue-reference case, because here we do refer to objects (= memory!), and dropping const from non-class rvalues is mainly for the reason that there is no object around.
The issue for dynamic types is of similar nature. In C++03, rvalues of class type have a known dynamic type - it's the static type of that expression. Because to have it another way, you need references or dereferences, which evaluate to an lvalue. That isn't true with unnamed rvalue references, yet they can show polymorphic behavior. So to solve it,
unnamed rvalue references become xvalues. They can be qualified and potentially have their dynamic type different. They do, like intended, prefer rvalue references during overloading, and won't bind to non-const lvalue references.
What previously was an rvalue (literals, objects created by casts to non-reference types) now becomes an prvalue. They have the same preference as xvalues during overloading.
What previously was an lvalue stays an lvalue.
And two groupings are done to capture those that can be qualified and can have different dynamic types (glvalues) and those where overloading prefers rvalue reference binding (rvalues).
You can make use of create-react-class module. Official documentation
Of course you must first install it
npm install create-react-class
Here is a working example
import React from "react";
import ReactDOM from "react-dom"
let createReactClass = require('create-react-class')
let Clock = createReactClass({
getInitialState:function(){
return {date:new Date()}
},
render:function(){
return (
<h1>{this.state.date.toLocaleTimeString()}</h1>
)
},
componentDidMount:function(){
this.timerId = setInterval(()=>this.setState({date:new Date()}),1000)
},
componentWillUnmount:function(){
clearInterval(this.timerId)
}
})
ReactDOM.render(
<Clock/>,
document.getElementById('root')
)
The answer that i am presenting is very simple, instead of using "px","em" or "%", i'll use "vw". In short it might look like this:- h1 {font-size: 5.9vw;} when used for heading purposes.
See this:Demo
For more details:Main tutorial
Using WHERE DATE(datetime) = '2009-10-20'
has performance issues. As stated here:
DATE()
for all rows, including those that don't match.Use BETWEEN
or >
, <
, =
operators which allow to use an index:
SELECT * FROM data
WHERE datetime BETWEEN '2009-10-20 00:00:00' AND '2009-10-20 23:59:59'
Update: the impact on using LIKE
instead of operators in an indexed column is high. These are some test results on a table with 1,176,000 rows:
datetime LIKE '2009-10-20%'
=> 2931msdatetime >= '2009-10-20 00:00:00' AND datetime <= '2009-10-20 23:59:59'
=> 168msWhen doing a second call over the same query the difference is even higher: 2984ms vs 7ms (yes, just 7 milliseconds!). I found this while rewriting some old code on a project using Hibernate.
I had this issue when trying to use Maven 3, after upgrading from Ubuntu 16.04 LTS (Xenial Xerus) to Ubuntu 18.04 LTS (Bionic Beaver).
Checking /usr/lib/jvm/java-8-oracle/jre/lib/security showed that my cacerts file was a symbolic link pointing to /etc/ssl/certs/java/cacerts
.
I also had a file suspiciously named cacerts.original
.
I renamed cacerts.original
to cacerts
, and that fixed the issue.
This is an old question with old answers. I want to highlight an updated way of calculating distance between two points. By now we should be familiar with the utility class, "SphericalUtil". You can retrieve the distance using that.
double distance = SphericalUtil.computeDistanceBetween(origin, dest);
from inside vim, use one of the following
open a new window below the current one:
:new filename.ext
open a new window beside the current one:
:vert new filename.ext
SELECT id, GROUP_CONCAT(name SEPARATOR ' ') FROM table GROUP BY id;
:- In MySQL, you can get the concatenated values of expression combinations . To eliminate duplicate values, use the DISTINCT clause. To sort values in the result, use the ORDER BY clause. To sort in reverse order, add the DESC (descending) keyword to the name of the column you are sorting by in the ORDER BY clause. The default is ascending order; this may be specified explicitly using the ASC keyword. The default separator between values in a group is comma (“,”). To specify a separator explicitly, use SEPARATOR followed by the string literal value that should be inserted between group values. To eliminate the separator altogether, specify SEPARATOR ''.
GROUP_CONCAT([DISTINCT] expr [,expr ...]
[ORDER BY {unsigned_integer | col_name | expr}
[ASC | DESC] [,col_name ...]]
[SEPARATOR str_val])
OR
mysql> SELECT student_name,
-> GROUP_CONCAT(DISTINCT test_score
-> ORDER BY test_score DESC SEPARATOR ' ')
-> FROM student
-> GROUP BY student_name;
None of the above solutions worked for me. But
#include <Windows.h>
worked fine.
The java compiler tries to interpret 600851475143 as a constant value of type int by default. This causes an error since 600851475143 can not be represented with an int.
To tell the compiler that you want the number interpretet as a long you have to add either l
or L
after it. Your number should then look like this 600851475143L
.
Since some Fonts make it hard to distinguish "1" and lower case "l" from each other you should always use the upper case "L".
HTML are markup languages, basically they are set of tags like <html>
, <body>
, which is used to present a website using css, and javascript as a whole. All these, happen in the clients system or the user you will be browsing the website.
Now, Connecting to a database, happens on whole another level. It happens on server, which is where the website is hosted.
So, in order to connect to the database and perform various data related actions, you have to use server-side scripts, like php, jsp, asp.net etc.
Now, lets see a snippet of connection using MYSQLi Extension of PHP
$db = mysqli_connect('hostname','username','password','databasename');
This single line code, is enough to get you started, you can mix such code, combined with HTML tags to create a HTML page, which is show data based pages. For example:
<?php
$db = mysqli_connect('hostname','username','password','databasename');
?>
<html>
<body>
<?php
$query = "SELECT * FROM `mytable`;";
$result = mysqli_query($db, $query);
while($row = mysqli_fetch_assoc($result)) {
// Display your datas on the page
}
?>
</body>
</html>
In order to insert new data into the database, you can use phpMyAdmin
or write a INSERT
query and execute them.
Just be sure what timezone you want to use.
datetime="06/12/2012 07:21:22"
Most popular use takes machine timezone.
date -d "$datetime" +"%s" #depends on local timezone, my output = "1339456882"
But in case you intentionally want to pass UTC datetime and you want proper timezone you need to add -u
flag. Otherwise you convert it from your local timezone.
date -u -d "$datetime" +"%s" #general output = "1339485682"
Please refer the below-detailed explanation.
I have used Built-in data frame in R, called mtcars.
> mtcars
mpg cyl disp hp drat wt ...
Mazda RX4 21.0 6 160 110 3.90 2.62 ...
Mazda RX4 Wag 21.0 6 160 110 3.90 2.88 ...
Datsun 710 22.8 4 108 93 3.85 2.32 ...
............
The top line of the table is called the header which contains the column names. Each horizontal line afterward denotes a data row, which begins with the name of the row, and then followed by the actual data. Each data member of a row is called a cell.
To retrieve data in a cell, we would enter its row and column coordinates in the single square bracket "[]" operator. The two coordinates are separated by a comma. In other words, the coordinates begin with row position, then followed by a comma, and ends with the column position. The order is important.
Eg 1:- Here is the cell value from the first row, second column of mtcars.
> mtcars[1, 2]
[1] 6
Eg 2:- Furthermore, we can use the row and column names instead of the numeric coordinates.
> mtcars["Mazda RX4", "cyl"]
[1] 6
We reference a data frame column with the double square bracket "[[]]" operator.
Eg 1:- To retrieve the ninth column vector of the built-in data set mtcars, we write mtcars[[9]].
mtcars[[9]] [1] 1 1 1 0 0 0 0 0 0 0 0 ...
Eg 2:- We can retrieve the same column vector by its name.
mtcars[["am"]] [1] 1 1 1 0 0 0 0 0 0 0 0 ...
As mentioned in the error, the official manual and the comments:
Replace
public function TSStatus($host, $queryPort)
with
public function __construct($host, $queryPort)
Mhh.. I think @Damian asks for remove undefined field (property) from an JS object
.
Then, I would simply do :
for (const i in myObj)
if (typeof myObj[i] === 'undefined')
delete myObj[i];
Short and efficient solution, in (vanilla) JS ! Example :
const myObj = {_x000D_
a: 1,_x000D_
b: undefined,_x000D_
c: null, _x000D_
d: 'hello world'_x000D_
};_x000D_
_x000D_
for (const i in myObj) _x000D_
if (typeof myObj[i] === 'undefined') _x000D_
delete myObj[i]; _x000D_
_x000D_
console.log(myObj);
_x000D_
For detecting if the form is present, I'm using
if($('form[name="frmSave"]').length > 0) {
//do something
}
Add span on each or group of words you want to align left or right. then add id or class on the span such as:
<h3>
<span id = "makeLeft"> Left Text</span>
<span id = "makeRight"> Right Text</span>
</h3>
CSS-
#makeLeft{
float: left;
}
#makeRight{
float: right;
}
for objs in my_bucket.objects.all():
print(objs.key)
path='/tmp/'+os.sep.join(objs.key.split(os.sep)[:-1])
try:
if not os.path.exists(path):
os.makedirs(path)
my_bucket.download_file(objs.key, '/tmp/'+objs.key)
except FileExistsError as fe:
print(objs.key+' exists')
This code will download the content in /tmp/
directory. If you want you can change the directory.
Each individual Web App under an IIS Web Site can use a different App Pool.
Verify the App Pool assigned to your app (not just the root site per your pictures) is .NET 4.0 compatible:
The difference is not Java-specific, but platform specific.
Historically UNIX-like OSes have used \n
as newline character, some other deprecated OSes have used \r
and Windows OSes have employed \r\n
.
Iterating through this is the precise code that worked for me.
querySnapshot.docs.forEach((e) => {
var readableDate = e.data().date.toDate();
console.log(readableDate);
}
Another possibility is the CountDownLatch
object, which is useful for simple situations : since you know in advance the number of threads, you initialize it with the relevant count, and pass the reference of the object to each thread.
Upon completion of its task, each thread calls CountDownLatch.countDown()
which decrements the internal counter. The main thread, after starting all others, should do the CountDownLatch.await()
blocking call. It will be released as soon as the internal counter has reached 0.
Pay attention that with this object, an InterruptedException
can be thrown as well.
This works for me:
start: function(event, ui) {
var start_pos = ui.item.index();
ui.item.data('start_pos', start_pos);
},
update: function (event, ui) {
var start_pos = ui.item.data('start_pos');
var end_pos = ui.item.index();
//$('#sortable li').removeClass('highlights');
}
You need to use anchors to match the beginning of the string ^
and the end of the string $
^[0-9]{2}$
@Steve already gave a good answer to your question:
verts = [None] * 1000
Warning: As @Joachim Wuttke pointed out, the list must be initialized with an immutable element. [[]] * 1000
does not work as expected because you will get a list of 1000 identical lists (similar to a list of 1000 points to the same list in C). Immutable objects like int, str or tuple will do fine.
Resizing lists is slow. The following results are not very surprising:
>>> N = 10**6
>>> %timeit a = [None] * N
100 loops, best of 3: 7.41 ms per loop
>>> %timeit a = [None for x in xrange(N)]
10 loops, best of 3: 30 ms per loop
>>> %timeit a = [None for x in range(N)]
10 loops, best of 3: 67.7 ms per loop
>>> a = []
>>> %timeit for x in xrange(N): a.append(None)
10 loops, best of 3: 85.6 ms per loop
But resizing is not very slow if you don't have very large lists. Instead of initializing the list with a single element (e.g. None
) and a fixed length to avoid list resizing, you should consider using list comprehensions and directly fill the list with correct values. For example:
>>> %timeit a = [x**2 for x in xrange(N)]
10 loops, best of 3: 109 ms per loop
>>> def fill_list1():
"""Not too bad, but complicated code"""
a = [None] * N
for x in xrange(N):
a[x] = x**2
>>> %timeit fill_list1()
10 loops, best of 3: 126 ms per loop
>>> def fill_list2():
"""This is slow, use only for small lists"""
a = []
for x in xrange(N):
a.append(x**2)
>>> %timeit fill_list2()
10 loops, best of 3: 177 ms per loop
For huge data set numpy or other optimized libraries are much faster:
from numpy import ndarray, zeros
%timeit empty((N,))
1000000 loops, best of 3: 788 ns per loop
%timeit zeros((N,))
100 loops, best of 3: 3.56 ms per loop
For debugging in Visual Studio you can print to the debug console:
OutputDebugStringW(L"My output string.");
I got the same error while using other one entity, He was annotating the class wrongly by using the table name inside the @Entity annotation without using the @Table annotation
The correct format should be
@Entity //default name similar to class name 'FooBar' OR @Entity( name = "foobar" ) for differnt entity name
@Table( name = "foobar" ) // Table name
public class FooBar{
I had a similar problem and solved it using list...not sure if this will help or not
classes = list(unique_labels(y_true, y_pred))
I solved this issue by re-adding remote repository: VCS -> Git -> Remotes.
The PowerShell answers are good, but the Rename-Item command doesn't work in the same target directory unless ALL of your files have the unwanted character in them (fails if it finds duplicates).
If you're like me and had a mix of good names and bad names, try this script instead (will replace spaces with an underscore):
Get-ChildItem -recurse -name | ForEach-Object { Move-Item $_ $_.replace(" ", "_") }
REST security is transport dependent while SOAP security is not.
REST inherits security measures from the underlying transport while SOAP defines its own via WS-Security.
When we talk about REST, over HTTP - all security measures applied HTTP are inherited and this is known as transport level security.
Transport level security, secures your message only while its on the wire - as soon as it leaves the wire, the message is no more secured.
But, with WS-Security, its message level security - even though the message leaves the transport channel it will be still protected. Also - with message level security you can partly encrypt the message [not the entire message, but only the parts you want] - but with transport level security you can't do it.
WS-Security has measures for authentication, integrity, confidentiality and non-repudiation while SSL doesn't support non repudiation [with 2-legged OAuth it does].
In performance-wise SSL is very much faster than WS-Security.
Thanks...
If you want to see what you you have inside an object in your web app, then use the json pipe in a component HTML template, for example:
<li *ngFor="let obj of myArray">{{obj | json}}</li>
Tested and valid using Angular 4.3.2.
You CANNOT do this - you cannot attach/detach or backup/restore a database from a newer version of SQL Server down to an older version - the internal file structures are just too different to support backwards compatibility. This is still true in SQL Server 2014 - you cannot restore a 2014 backup on anything other than another 2014 box (or something newer).
You can either get around this problem by
using the same version of SQL Server on all your machines - then you can easily backup/restore databases between instances
otherwise you can create the database scripts for both structure (tables, view, stored procedures etc.) and for contents (the actual data contained in the tables) either in SQL Server Management Studio (Tasks > Generate Scripts
) or using a third-party tool
or you can use a third-party tool like Red-Gate's SQL Compare and SQL Data Compare to do "diffing" between your source and target, generate update scripts from those differences, and then execute those scripts on the target platform; this works across different SQL Server versions.
The compatibility mode setting just controls what T-SQL features are available to you - which can help to prevent accidentally using new features not available in other servers. But it does NOT change the internal file format for the .mdf
files - this is NOT a solution for that particular problem - there is no solution for restoring a backup from a newer version of SQL Server on an older instance.
add @PrimaryKey(autoGenerate = true)
@Entity
public class User {
@PrimaryKey(autoGenerate = true)
private int id;
@ColumnInfo(name = "full_name")
private String name;
@ColumnInfo(name = "phone")
private String phone;
public User(){
}
//type-1
public User(String name, String phone) {
this.name = name;
this.phone = phone;
}
//type-2
public User(int id, String name, String phone) {
this.id = id;
this.name = name;
this.phone = phone;
}
}
while storing data
//type-1
db.userDao().InsertAll(new User(sName,sPhone));
//type-2
db.userDao().InsertAll(new User(0,sName,sPhone));
type-1
If you are not passing value for primary key, by default it will 0 or null.
type-2
Put null or zero for the id while creating object (my case user object)
If the field type is long or int (or its TypeConverter converts it to a long or int), Insert methods treat 0 as not-set while inserting the item.
If the field's type is Integer or Long (Object) (or its TypeConverter converts it to an Integer or a Long), Insert methods treat null as not-set while inserting the item.
With the class below you can make the suggestion of Donut "exception safe".
using (new CursorHandler())
{
// Execute your time-intensive hashing code here...
}
the class CursorHandler
public class CursorHandler
: IDisposable
{
public CursorHandler(Cursor cursor = null)
{
_saved = Cursor.Current;
Cursor.Current = cursor ?? Cursors.WaitCursor;
}
public void Dispose()
{
if (_saved != null)
{
Cursor.Current = _saved;
_saved = null;
}
}
private Cursor _saved;
}
querySelectorAll returns a NodeList which has its own forEach method:
document.querySelectorAll('input').forEach( input => {
// ...
});
getElementsByTagName now returns an HTMLCollection instead of a NodeList. So you would first need to convert it to an array to have access to methods like map and forEach:
Array.from(document.getElementsByTagName('input')).forEach( input => {
// ...
});
For Spring Boot >= 1.4
@Configuration
public class AppConfig
{
@Bean
public RestTemplate restTemplate(RestTemplateBuilder restTemplateBuilder)
{
return restTemplateBuilder
.setConnectTimeout(...)
.setReadTimeout(...)
.build();
}
}
For Spring Boot <= 1.3
@Configuration
public class AppConfig
{
@Bean
@ConfigurationProperties(prefix = "custom.rest.connection")
public HttpComponentsClientHttpRequestFactory customHttpRequestFactory()
{
return new HttpComponentsClientHttpRequestFactory();
}
@Bean
public RestTemplate customRestTemplate()
{
return new RestTemplate(customHttpRequestFactory());
}
}
then in your application.properties
custom.rest.connection.connection-request-timeout=...
custom.rest.connection.connect-timeout=...
custom.rest.connection.read-timeout=...
This works because HttpComponentsClientHttpRequestFactory
has public setters connectionRequestTimeout
, connectTimeout
, and readTimeout
and @ConfigurationProperties
sets them for you.
For Spring 4.1 or Spring 5 without Spring Boot using @Configuration
instead of XML
@Configuration
public class AppConfig
{
@Bean
public RestTemplate customRestTemplate()
{
HttpComponentsClientHttpRequestFactory httpRequestFactory = new HttpComponentsClientHttpRequestFactory();
httpRequestFactory.setConnectionRequestTimeout(...);
httpRequestFactory.setConnectTimeout(...);
httpRequestFactory.setReadTimeout(...);
return new RestTemplate(httpRequestFactory);
}
}
Matthew Brindley, your code worked very good for some website I needed (with login), but I needed to change to HttpWebRequest
and HttpWebResponse
otherwise I get a 404 Bad Request from the remote server. Also I would like to share my workaround using your code, and is that I tried it to login to a website based on moodle, but it didn't work at your step "GETting the page behind the login form" because when successfully POSTing the login, the Header 'Set-Cookie'
didn't return anything despite other websites does.
So I think this where we need to store cookies for next Requests, so I added this.
To the "POSTing to the login form" code block :
var cookies = new CookieContainer();
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(formUrl);
req.CookieContainer = cookies;
And To the "GETting the page behind the login form" :
HttpWebRequest getRequest = (HttpWebRequest)WebRequest.Create(getUrl);
getRequest.CookieContainer = new CookieContainer();
getRequest.CookieContainer.Add(resp.Cookies);
getRequest.Headers.Add("Cookie", cookieHeader);
Doing this, lets me Log me in and get the source code of the "page behind login" (website based moodle) I know this is a vague use of the CookieContainer
and HTTPCookies because we may ask first is there a previously set of cookies saved before sending the request to the server. This works without problem anyway, but here's a good info to read about WebRequest
and WebResponse
with sample projects and tutorial:
Retrieving HTTP content in .NET
How to use HttpWebRequest and HttpWebResponse in .NET
If all else fails, open the file in binary to make sure there are no funny characters [3 non printable characters at the beginning of the file that identify the file as utf-8] at the beginning of the file. We did this and found some. so we converted the file from utf-8 to ascii and it worked.
I think a better way to solve this would be to use the datetime callable:
from datetime import datetime
date = models.DateField(default=datetime.now)
Note that no parenthesis were used. If you used parenthesis you would invoke the now()
function just once (when the model is created). Instead, you pass the callable as an argument, thus being invoked everytime an instance of the model is created.
Credit to Django Musings. I've used it and works fine.
I faced the same problem,but after hours of efforts i find the solution.It can be without using any external plugin:)
applicantListToExport: function (query, callback) {
this
.find(query).select({'advtId': 0})
.populate({
path: 'influId',
model: 'influencer',
select: { '_id': 1,'user':1},
populate: {
path: 'userid',
model: 'User'
}
})
.populate('campaignId',{'campaignTitle':1})
.exec(callback);
}
I started hosting as a service with pywin32.
Everything was well but I met the problem that service was not able to start within 30 seconds (default timeout for Windows) on system startup. It was critical for me because Windows startup took place simultaneous on several virtual machines hosted on one physical machine, and IO load was huge. Error messages were:
Error 1053: The service did not respond to the start or control request in a timely fashion.
Error 7009: Timeout (30000 milliseconds) waiting for the <ServiceName> service to connect.
I fought a lot with pywin, but ended up with using NSSM as it was proposed in this answer. It was very easy to migrate to it.
The ALTER TABLE
MySQL command should do the trick. The following command will change the default character set of your table and the character set of all its columns to UTF8.
ALTER TABLE etape_prospection CONVERT TO CHARACTER SET utf8 COLLATE utf8_general_ci;
This command will convert all text-like columns in the table to the new character set. Character sets use different amounts of data per character, so MySQL will convert the type of some columns to ensure there's enough room to fit the same number of characters as the old column type.
I recommend you read the ALTER TABLE MySQL documentation before modifying any live data.
In your config.ini
file of eclipse eclipse\configuration\config.ini
check this three things:
osgi.framework=file\:plugins\\org.eclipse.osgi_3.4.2.R34x_v20080826-1230.jar
osgi.bundles=reference\:file\:org.eclipse.equinox.simpleconfigurator_1.0.0.v20080604.jar@1\:start
org.eclipse.equinox.simpleconfigurator.configUrl=file\:org.eclipse.equinox.simpleconfigurator\\bundles.info
And check whether these jars are in place or not, the jar files depend upon your version of eclipse .
If you are using Ubuntu and it seem sendmail is not in /usr/sbin/sendmail
, install sendmail using the terminal with this command:
sudo apt-get install sendmail
and then run reload the PHP page where mail()
is written. Also check your spam folder.
From your local machine:
rsync -chavzP --stats [email protected]:/path/to/copy /path/to/local/storage
From your local machine with a non standard ssh port:
rsync -chavzP -e "ssh -p $portNumber" [email protected]:/path/to/copy /local/path
Or from the remote host, assuming you really want to work this way and your local machine is listening on SSH:
rsync -chavzP --stats /path/to/copy [email protected]:/path/to/local/storage
See man rsync
for an explanation of my usual switches.
Here's a general-purpose batch file to print the top n
lines from a file like the GNU head
utility, instead of just a single line.
@echo off
if [%1] == [] goto usage
if [%2] == [] goto usage
call :print_head %1 %2
goto :eof
REM
REM print_head
REM Prints the first non-blank %1 lines in the file %2.
REM
:print_head
setlocal EnableDelayedExpansion
set /a counter=0
for /f ^"usebackq^ eol^=^
^ delims^=^" %%a in (%2) do (
if "!counter!"=="%1" goto :eof
echo %%a
set /a counter+=1
)
goto :eof
:usage
echo Usage: head.bat COUNT FILENAME
For example:
Z:\>head 1 "test file.c"
; this is line 1
Z:\>head 3 "test file.c"
; this is line 1
this is line 2
line 3 right here
It does not currently count blank lines. It is also subject to the batch-file line-length restriction of 8 KB.
Its better to go through the Recommended Microsoft's Way to download Visual Studio 2015 Update 3 ISO (Community Edition).
The instructions below will help you to download any version of Visual Studio or even SQL Server etc provided by Microsoft in an easy to remember way. Though I recommend people using VS 2017 as there are not much big differences between 2015 and 2017.
Please follow the steps as mentioned below.
Visit the standard URL www.visualstudio.com/downloads
Scroll down and click on encircled below as shown in snapshot down
After that join Visual Studio Web Dev essentials for Free as shown below. Try loggin in with your microsoft account and see that if it works otherwise click on Join
I realize that this answer doesn't really answer your question, but I think it's helpful anyway. Here's an alternative way to implementing the caesar cipher with string methods:
def caesar(plaintext, shift):
alphabet = string.ascii_lowercase
shifted_alphabet = alphabet[shift:] + alphabet[:shift]
table = string.maketrans(alphabet, shifted_alphabet)
return plaintext.translate(table)
In fact, since string methods are implemented in C, we will see an increase in performance with this version. This is what I would consider the 'pythonic' way of doing this.
in case it helps someone, on amilinux, with php5.6 and php-fpm installed, it's:
sudo /etc/init.d/php-fpm-5.6 status
I encountered the same error while using Server Management Objects (SMO) in vb.net (I'm sure it's the same in C#)
Techie Joe's comment on the initial post was a useful warning that in shared hosting a lot of additional things are going on. It took a little time to figure out, but the code below shows how one has to be very specific in the way they access SQL databases. The 'server principal...' error seemed to show up whenever the SMO calls were not precisely specific in the shared hosting environment.
This first section of code was against a local SQL Express server and relied on simple Windows Authentication. All the code used in these samples are based on the SMO tutorial by Robert Kanasz in this Code Project website article:
Dim conn2 = New ServerConnection()
conn2.ServerInstance = "<local pc name>\SQLEXPRESS"
Try
Dim testConnection As New Server(conn2)
Debug.WriteLine("Server: " + testConnection.Name)
Debug.WriteLine("Edition: " + testConnection.Information.Edition)
Debug.WriteLine(" ")
For Each db2 As Database In testConnection.Databases
Debug.Write(db2.Name & " - ")
For Each fg As FileGroup In db2.FileGroups
Debug.Write(fg.Name & " - ")
For Each df As DataFile In fg.Files
Debug.WriteLine(df.Name + " - " + df.FileName)
Next
Next
Next
conn2.Disconnect()
Catch err As Exception
Debug.WriteLine(err.Message)
End Try
The code above finds the .mdf files for every database on the local SQLEXPRESS server just fine because authentication is handled by Windows and it is broad across all the databases.
In the following code there are 2 sections iterating for the .mdf files. In this case only the first iteration looking for a filegroup works, and it only finds a single file because the connection is to only a single database in the shared hosting environment.
The second iteration, which is a copy of the iteration that worked above, chokes immediately because the way it is written it tries to access the 1st database in the shared environment, which is not the one to which the User ID/Password apply, so the SQL server returns an authorization error in the form of the 'server principal...' error.
Dim sqlConnection1 As New System.Data.SqlClient.SqlConnection
sqlConnection1.ConnectionString = "connection string with User ID/Password to a specific database in a shared hosting system. This string will likely also include the Data Source and Initial Catalog parameters"
Dim conn1 As New ServerConnection(sqlConnection1)
Try
Dim testConnection As New Server(conn1)
Debug.WriteLine("Server: " + testConnection.Name)
Debug.WriteLine("Edition: " + testConnection.Information.Edition)
Debug.WriteLine(" ")
Dim db2 = testConnection.Databases("the name of the database to which the User ID/Password in the connection string applies")
For Each fg As FileGroup In db2.FileGroups
Debug.Write(fg.Name & " - ")
For Each df As DataFile In fg.Files
Debug.WriteLine(df.Name + " - " + df.FileName)
Next
Next
For Each db3 As Database In testConnection.Databases
Debug.Write(db3.Name & " - ")
For Each fg As FileGroup In db3.FileGroups
Debug.Write(fg.Name & " - ")
For Each df As DataFile In fg.Files
Debug.WriteLine(df.Name + " - " + df.FileName)
Next
Next
Next
conn1.Disconnect()
Catch err As Exception
Debug.WriteLine(err.Message)
End Try
In that second iteration loop, the code compiles fine, but because SMO wasn't setup to access precisely the correct database with the precise syntax, that attempt fails.
As I'm just learning SMO I thought other newbies might appreciate knowing there's also a more simple explanation for this error - we just coded it wrong.
sudo apt-get install curl-devel
sudo apt-get install libcurl-dev
(will install the default alternative)
OR
sudo apt-get install libcurl4-openssl-dev
(the OpenSSL variant)
OR
sudo apt-get install libcurl4-gnutls-dev
(the gnutls variant)
A quick example of code for Application.Dispatcher.UnhandledException:
public App() {
this.Dispatcher.UnhandledException += OnDispatcherUnhandledException;
}
void OnDispatcherUnhandledException(object sender, System.Windows.Threading.DispatcherUnhandledExceptionEventArgs e) {
string errorMessage = string.Format("An unhandled exception occurred: {0}", e.Exception.Message);
MessageBox.Show(errorMessage, "Error", MessageBoxButton.OK, MessageBoxImage.Error);
// OR whatever you want like logging etc. MessageBox it's just example
// for quick debugging etc.
e.Handled = true;
}
I added this code in App.xaml.cs
Depending on your needs, you want to use their section feeds, their search feeds
http://news.google.com/news?q=apple&output=rss
or Bing News Search.
Also if you want to do something like ClassB.Run("thing");
, make sure the Method Run();
is static
or you could call it like this: thing.Run("thing");
.
You must always override an abstract function.
Thus:
I saw that someone was wondering how to do it for another controller.
In my case I had all of my email templates in the Views/Email folder, but you could modify this to pass in the controller in which you have views associated for.
public static string RenderViewToString(Controller controller, string viewName, object model)
{
var oldController = controller.RouteData.Values["controller"].ToString();
if (controller.GetType() != typeof(EmailController))
controller.RouteData.Values["controller"] = "Email";
var oldModel = controller.ViewData.Model;
controller.ViewData.Model = model;
try
{
using (var sw = new StringWriter())
{
var viewResult = ViewEngines.Engines.FindView(controller.ControllerContext, viewName,
null);
var viewContext = new ViewContext(controller.ControllerContext, viewResult.View, controller.ViewData, controller.TempData, sw);
viewResult.View.Render(viewContext, sw);
//Cleanup
controller.ViewData.Model = oldModel;
controller.RouteData.Values["controller"] = oldController;
return sw.GetStringBuilder().ToString();
}
}
catch (Exception ex)
{
Elmah.ErrorSignal.FromCurrentContext().Raise(ex);
throw ex;
}
}
Essentially what this does is take a controller, such as AccountController and modify it to think it's an EmailController so that the code will look in the Views/Email
folder. It's necessary to do this because the FindView
method doesn't take a straight up path as a parameter, it wants a ControllerContext
.
Once done rendering the string, it returns the AccountController back to its initial state to be used by the Response object.
Simple function to accomplish this:
def insert_str(string, str_to_insert, index):
return string[:index] + str_to_insert + string[index:]
If you're using Spring framework already, use the following method:
import static org.springframework.web.util.HtmlUtils.htmlUnescape;
...
String result = htmlUnescape(source);
I wanted to give some kudos to the comment that mentioned CTRL + Z as an option. At the end of the day, it's going to depend on what system that you have Git installed on and what program is configured to open text files (e.g. less vs. vim). CTRL + Z works for vim on Windows.
If you're using Git in a Windows environment, there are some quirks. Just helps to know what they are. (i.e. Notepad vs. Nano, etc.).
If you put overflow: scroll
on a fixed height div
, the div
will scroll if the contents take up too much space.
I had the same problem in Windows. I solved it adding: include mime.types; under http{ in my nginx.conf file. Then it still didn't work.. so I looked at the error.log file and I noticed it was trying to charge the .css and javascript files from the file path but with an /http folder between. Ex: my .css was in : "C:\Users\pc\Documents\nginx-server/player-web/css/index.css" and it was taking it from: "C:\Users\pc\Documents\nginx-server/html/player-web/css/index.css" So i changed my player-web folder inside an html folder and it worked ;)
div {
width:200px;
height:150px;
display:-moz-box;
-moz-box-pack:center;
-moz-box-align:center;
display:-webkit-box;
-webkit-box-pack:center;
-webkit-box-align:center;
display:box;
box-pack:center;
box-align:center;
}
<div>
<img src="images/logo.png" />
</div>
mylist[c(5,7,9)]
should do it.
You want the sublists returned as sublists of the result list; you don't use [[]]
(or rather, the function is [[
) for that -- as Dason mentions in comments, [[
grabs the element.
SUMMARY: In ASP.NET, every Web page derives from the System.Web.UI.Page class. The Page class aggregates an instance of the HttpSession object for session data. The Page class exposes different events and methods for customization. In particular, the OnInit method is used to set the initialize state of the Page object. If the request does not have the Session cookie, a new Session cookie will be issued to the requester.
EDIT:
Session: A Concept for Beginners
SUMMARY: Session is created when user sends a first request to the server for any page in the web application, the application creates the Session and sends the Session ID back to the user with the response and is stored in the client machine as a small cookie. So ideally the "machine that has disabled the cookies, session information will not be stored".
I am just answering here with the formatted version of the final sql I needed based on Bob Jarvis answer as posted in my comment above:
select n1.name, n1.author_id, cast(count_1 as numeric)/total_count
from (select id, name, author_id, count(1) as count_1
from names
group by id, name, author_id) n1
inner join (select author_id, count(1) as total_count
from names
group by author_id) n2
on (n2.author_id = n1.author_id)
There are three tables- Equities(coulmns: ID,ISIN) and Bond(coulmns: ID,ISIN). Third table Securities(coulmns: ID,ISIN) contains all data from Equities and Bond tables. Write SQL queries to validate below: (1) Securities table should contain all the data from Equities and Bonds tables. (2) Securities table should not contain any data other than present in Equities and Bonds tables
You can call up the color picker from any Cocoa application (TextEdit, Mail, Keynote, Pages, etc.) by hitting Shift-Command-C
The following article explains more about using Mac OS's Color Picker.
http://www.macworld.com/article/46746/2005/09/colorpickersecrets.html
The other answers to this question seem to hit it spot on. Now how would you figure this out for yourself without stack overflow? Check out IPython, an interactive Python shell that has tab auto-complete.
> ipython
import Python 2.5 (r25:51908, Nov 6 2007, 16:54:01)
Type "copyright", "credits" or "license" for more information.
IPython 0.8.2.svn.r2750 -- An enhanced Interactive Python.
? -> Introduction and overview of IPython's features.
%quickref -> Quick reference.
help -> Python's own help system.
object? -> Details about 'object'. ?object also works, ?? prints more.
In [1]: import datetime
In [2]: now=datetime.datetime.now()
In [3]: now.
press tab a few times and you'll be prompted with the members of the "now" object:
now.__add__ now.__gt__ now.__radd__ now.__sub__ now.fromordinal now.microsecond now.second now.toordinal now.weekday
now.__class__ now.__hash__ now.__reduce__ now.astimezone now.fromtimestamp now.min now.strftime now.tzinfo now.year
now.__delattr__ now.__init__ now.__reduce_ex__ now.combine now.hour now.minute now.strptime now.tzname
now.__doc__ now.__le__ now.__repr__ now.ctime now.isocalendar now.month now.time now.utcfromtimestamp
now.__eq__ now.__lt__ now.__rsub__ now.date now.isoformat now.now now.timetuple now.utcnow
now.__ge__ now.__ne__ now.__setattr__ now.day now.isoweekday now.replace now.timetz now.utcoffset
now.__getattribute__ now.__new__ now.__str__ now.dst now.max now.resolution now.today now.utctimetuple
and you'll see that now.year is a member of the "now" object.
Thought this you can easily setup
$(function(){
$("input[name^=radio_share]").click
(
function()
{
if($(this).attr("id")=="radio_share_dependent")
{
$(".share_dependent_block input, .share_dependent_block select").prop("disabled",false);
}
else
{
$(".share_dependent_block input, .share_dependent_block select").prop("disabled",true);
}
}
);
});
In this answer, I will consider practical examples.
The first one, is of pandas.concat
.
The second one, of merging dataframes from the index of one and the column of another one.
Considering the following DataFrames
with the same column names:
Preco2018 with size (8784, 5)
Preco 2019 with size (8760, 5)
That have the same column names.
You can combine them using pandas.concat
, by simply
import pandas as pd
frames = [Preco2018, Preco2019]
df_merged = pd.concat(frames)
Which results in a DataFrame with the following size (17544, 5)
If you want to visualize, it ends up working like this
(Source)
2. Merge by Column and Index
In this part, I will consider a specific case: If one wants to merge the index of one dataframe and the column of another dataframe.
Let's say one has the dataframe Geo
with 54 columns, being one of the columns the Date Data
, which is of type datetime64[ns]
.
And the dataframe Price
that has one column with the price and the index corresponds to the dates
In this specific case, to merge them, one uses pd.merge
merged = pd.merge(Price, Geo, left_index=True, right_on='Data')
Which results in the following dataframe
I encounter this problem when trying to use matlab eng to call m functions from c code.
which occurs with command mex -f .. ..
My solution:
strings /usr/lib/i386-<tab>/libstdc++.so.6 | grep GLIBC
I found it includes 3.4.15
so my system has the newest libs.
the problem comes from matlab itself, it calls its own libstdc++.so.6 from {MATLAB}/bin
so, just replace it with the updated system lib.
Pass java.text.Collator.getInstance()
to Collections.sort
method ; it will sort Alphabetically while ignoring case sensitive.
ArrayList<String> myArray = new ArrayList<String>();
myArray.add("zzz");
myArray.add("xxx");
myArray.add("Aaa");
myArray.add("bb");
myArray.add("BB");
Collections.sort(myArray,Collator.getInstance());
If you really want a String.EMPTY constant, you can create an utility static final class named "Constants" (for example) in your project. This class will maintain your constants, including the empty String...
In the same idea, you can create ZERO, ONE int constants... that don't exist in the Integer class, but like I commented, it would be a pain to write and to read :
for(int i=Constants.ZERO; ...) {
if(myArray.length > Constants.ONE) {
System.out.println("More than one element");
}
}
Etc.
Could the Barcode Rendering Framework at Codeplex GitHub be of help?
None of the existing answers resets the index after reversing the dataframe.
For this, do the following:
data[::-1].reset_index()
Here's a utility function that also removes the old index column, as per @Tim's comment:
def reset_my_index(df):
res = df[::-1].reset_index(drop=True)
return(res)
Simply pass your dataframe into the function
For me the main trick is
app.use(bodyParser.json({
limit: '20mb'
}));
app.use(bodyParser.urlencoded({
limit: '20mb',
parameterLimit: 100000,
extended: true
}));
bodyParse.json first bodyParse.urlencoded second
For me it was because I hadn't set an active
class on any of the slides.
If you simply want the table name you can run:
select object_name(object_id) from sys.columns
where name like '%received_at%'
If you want the Schema Name as well (which in a lot of cases you will, as you'll have a lot of different schemas, and unless you can remember every table in the database and where it belongs this can be useful) run:
select OBJECT_SCHEMA_NAME(object_id),object_name(object_id) from sys.columns
where name like '%received_at%'
and finally if you want it in a nicer format (although this is where the code (In my opinion) is getting too complicated for easy writing):
select concat(OBJECT_SCHEMA_NAME(object_id),'.',object_name(object_id)) from sys.columns
where name like '%received_at%'
note you can also create a function based on what I have:
CREATE PROCEDURE usp_tablecheck
--Scan through all tables to identify all tables with columns that have the provided string
--Stephen B
@name nvarchar(200)
AS
SELECT CONCAT(OBJECT_SCHEMA_NAME(object_id),'.',object_name(object_id)) AS [Table Name], name AS [Column] FROM sys.columns
WHERE name LIKE CONCAT('%',@name,'%')
ORDER BY [Table Name] ASC, [Column] ASC
GO
It is worth noting that the concat feature was added in 2012. For 2008r2 and earlier use + to concatenate strings.
I've re-formatted the proc a bit since I posted this. It's a bit more advanced now but looks a lot messier (but it's in a proc so you'll never see it) and it's formatted better.
This version allows you to have it in an administrative database and then search through any database. Change the decleration of @db
from 'master'
to whichever you want the default database to be (NOTE: using the CONCAT() function will only work with 2012+ unless you change the string concatenation to use the +
operators).
CREATE PROCEDURE [dbo].[usp_tablecheck]
--Scan through all tables to identify all tables in the specified database with columns that have the provided string
--Stephen B
@name nvarchar(200)
,@db nvarchar(200) = 'master'
AS
DECLARE @sql nvarchar(4000) = CONCAT('
SELECT concat(OBJECT_SCHEMA_NAME(col.object_id,DB_ID(''',@db,''')),''.'',object_name(col.object_id,DB_ID(''',@db,'''))) AS [Table Name]
,col.name AS [Column]
FROM ',@db,'.sys.columns col
LEFT JOIN ',@db,'.sys.objects ob
ON ob.object_id = col.object_id
WHERE
col.name LIKE CONCAT(''%'',''',@name,''',''%'')
AND ob.type =''U''
ORDER BY [Table Name] ASC
,[Column] ASC')
EXECUTE (@sql)
GO
wrap you shared code into another function:
<script>
function myFun () {
//do something
}
$(document).ready(function(){
//Load City by State
$(document).on('change', '#billing_state_id', function() {
myFun ();
});
$(document).on('click', '#click_me', function() {
//do something
myFun();
});
});
</script>
I used the following in the head of mark down file
<script type="text/javascript" async
src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.2/MathJax.js?
config=TeX-MML-AM_CHTML"
</script>
Then typed the following mathjax statement
$$x_{1,2} = \frac{-b \pm \sqrt{b^2-4ac}}{2b}.$$
It worked for me
You are not passing your 2D array correctly. This should work for you
int rotateArr(int *arr[])
or
int rotateArr(int **arr)
or
int rotateArr(int arr[][N])
Rather than returning the array pass the target array as argument. See John Bode's answer.
It is still one intersting moment:
ev.preventDefault()
ev.stopPropagation();
ev.nativeEvent.stopImmediatePropagation();
Use this construction, if your function is wrapped by tag
For datatables 1.10.12.
$('#table_id').dataTable({
ajax: function (data, callback, settings) {
$.ajax({
url: '/your/url',
type: 'POST',
data: data,
success:function(data){
callback(data);
// Do whatever you want.
}
});
}
});
Even simpler, add a .nuget folder to your solution and the 'Restore Nuget Packages' will appear (not sure whether nuget.exe needs to be present for it to work).
I think the easiest way is to divide two integers and increase by one :
int r = list.Count() / 10;
r += (list.Count() % 10 == 0 ? 0 : 1);
No need of libraries or functions.
edited with the right code.
What you can do to resolve your conflict is
svn resolve --accept working -R <path>
where <path>
is where you have your conflict (can be the root of your repo).
Explanations:
resolve
asks svn
to resolve the conflictaccept working
specifies to keep your working files-R
stands for recursiveHope this helps.
EDIT:
To sum up what was said in the comments below:
<path>
should be the directory in conflict (C:\DevBranch\
in the case of the OP)svn switch
commandSwitch working copy to new branch/tag
option at branch creationThere are lots of facilities to obtain numbers from String
s in Java (and vice versa). You may want to skip the regex part to spare yourself the complication of that.
For example, you could try and see what Double.parseDouble(String s)
returns for you. It should throw a NumberFormatException
if it does not find an appropriate value in the string. I would suggest this technique because you could actually make use of the value represented by the String
as a numeric type.
The Java Specialists newsletter (which I can unreservedly recommend) had an interesting article on this, and how to handle the InterruptedException
. It's well worth reading and digesting.
Oh, I just found that command on PostgreSQL forum:
SELECT * FROM pg_stat_activity;
Of course there is! Win CMD can do a lot more than just split text files :)
Split a text file into separate files of 'max' lines each:
Split text file (max lines each):
: Initialize
set input=file.txt
set max=10000
set /a line=1 >nul
set /a file=1 >nul
set out=!file!_%input%
set /a max+=1 >nul
echo Number of lines in %input%:
find /c /v "" < %input%
: Split file
for /f "tokens=* delims=[" %i in ('type "%input%" ^| find /v /n ""') do (
if !line!==%max% (
set /a line=1 >nul
set /a file+=1 >nul
set out=!file!_%input%
echo Writing file: !out!
)
REM Write next file
set a=%i
set a=!a:*]=]!
echo:!a:~1!>>out!
set /a line+=1 >nul
)
If above code hangs or crashes, this example code splits files faster (by writing data to intermediate files instead of keeping everything in memory):
eg. To split a file with 7,600 lines into smaller files of maximum 3000 lines.
set
command to be fed to /g
flag of findstr
list1.txt
\[[0-9]\]
\[[0-9][0-9]\]
\[[0-9][0-9][0-9]\]
\[[0-2][0-9][0-9][0-9]\]
list2.txt
\[[3-5][0-9][0-9][0-9]\]
list3.txt
\[[6-9][0-9][0-9][0-9]\]
type "%input%" | find /v /n "" | findstr /b /r /g:list1.txt > file1.txt type "%input%" | find /v /n "" | findstr /b /r /g:list2.txt > file2.txt type "%input%" | find /v /n "" | findstr /b /r /g:list3.txt > file3.txt
for /f "tokens=* delims=[" %i in ('type "%cd%\file1.txt"') do ( set a=%i set a=!a:*]=]! echo:!a:~1!>>file_1.txt)
Notes:
Works with leading whitespace, blank lines & whitespace lines.
Tested on Win 10 x64 CMD, on 4.4GB text file, 5651982 lines.
If you want to overwrite specific changes, you need some way of telling it which ones you want to forget.
You could try selectively stashing the changes you want to abandon using git stash --patch
and then dropping that stash with git stash drop
. You can then pull in the remote changes and merge them as normal.
Try putting this HTML snippet into your served document:
<img id="ItemPreview" src="">
Then, on JavaScript side, you can dynamically modify image's src
attribute with so-called Data URL.
document.getElementById("ItemPreview").src = "data:image/png;base64," + yourByteArrayAsBase64;
Alternatively, using jQuery:
$('#ItemPreview').attr('src', `data:image/png;base64,${yourByteArrayAsBase64}`);
This assumes that your image is stored in PNG format, which is quite popular. If you use some other image format (e.g. JPEG), modify the MIME type ("image/..."
part) in the URL accordingly.
Similar Questions:
A lot of the given answers fail on one or more of:
Here's what I wrote:
static int countMatches(Pattern pattern, String string)
{
Matcher matcher = pattern.matcher(string);
int count = 0;
int pos = 0;
while (matcher.find(pos))
{
count++;
pos = matcher.start() + 1;
}
return count;
}
Example call:
Pattern pattern = Pattern.compile("232");
int count = countMatches(pattern, "23232"); // Returns 2
If you want a non-regular-expression search, just compile your pattern appropriately with the LITERAL
flag:
Pattern pattern = Pattern.compile("1+1", Pattern.LITERAL);
int count = countMatches(pattern, "1+1+1"); // Returns 2
Change only in two line and you are getting actually what you want.
$query = $this->db->get();
$ret = $query->row();
return $ret->campaign_id;
try it.
The best thing to do is to install the Tampermonkey extension.
This will allow you to easily install Greasemonkey scripts, and to easily manage them. Also it makes it easier to install userscripts directly from sites like OpenUserJS, MonkeyGuts, etc.
Finally, it unlocks most all of the GM functionality that you don't get by installing a GM script directly with Chrome. That is, more of what GM on Firefox can do, is available with Tampermonkey.
But, if you really want to install a GM script directly, it's easy a right pain on Chrome these days...
You can still drag a file to the extensions page and it will work... Until you restart Chrome. Then it will be permanently disabled. See Continuing to "protect" Chrome users from malicious extensions for more information. Again, Tampermonkey is the smart way to go. (Or switch browsers altogether to Opera or Firefox.)
Chrome is changing the way extensions are installed. Userscripts are pared-down extensions on Chrome but. Starting in Chrome 21, link-click behavior is disabled for userscripts. To install a user script, drag the **.user.js* file into the Extensions page (chrome://extensions
in the address input).
Merely drag your **.user.js* files into any Chrome window. Or click on any Greasemonkey script-link.
You'll get an installation warning:
Click Continue.
You'll get a confirmation dialog:
Click Add.
Notes:
By default, Chrome installs scripts in the Extensions folder1, full of cryptic names and version numbers. And, if you try to manually add a script under this folder tree, it will be wiped the next time Chrome restarts.
To control the directories and filenames to something more meaningful, you can:
Create a directory that's convenient to you, and not where Chrome normally looks for extensions. For example, Create: C:\MyChromeScripts\
.
For each script create its own subdirectory. For example, HelloWorld
.
In that subdirectory, create or copy the script file. For example, Save this question's code as: HelloWorld.user.js
.
You must also create a manifest file in that subdirectory, it must be named: manifest.json
.
For our example, it should contain:
{
"manifest_version": 2,
"content_scripts": [ {
"exclude_globs": [ ],
"include_globs": [ "*" ],
"js": [ "HelloWorld.user.js" ],
"matches": [ "https://stackoverflow.com/*",
"https://stackoverflow.com/*"
],
"run_at": "document_end"
} ],
"converted_from_user_script": true,
"description": "My first sensibly named script!",
"name": "Hello World",
"version": "1"
}
The manifest.json
file is automatically generated from the meta-block by Chrome, when an user script is installed. The values of @include
and @exclude
meta-rules are stored in include_globs
and exclude_globs
, @match
(recommended) is stored in the matches
list. "converted_from_user_script": true
is required if you want to use any of the supported GM_*
methods.
Now, in Chrome's Extension manager (URL = chrome://extensions/), Expand "Developer mode".
Click the Load unpacked extension... button.
For the folder, paste in the folder for your script, In this example it is: C:\MyChromeScripts\HelloWorld
.
Your script is now installed, and operational!
If you make any changes to the script source, hit the Reload link for them to take effect:
1 The folder defaults to:
Windows XP: Chrome : %AppData%\..\Local Settings\Application Data\Google\Chrome\User Data\Default\Extensions\ Chromium: %AppData%\..\Local Settings\Application Data\Chromium\User Data\Default\Extensions\ Windows Vista/7/8: Chrome : %LocalAppData%\Google\Chrome\User Data\Default\Extensions\ Chromium: %LocalAppData%\Chromium\User Data\Default\Extensions\ Linux: Chrome : ~/.config/google-chrome/Default/Extensions/ Chromium: ~/.config/chromium/Default/Extensions/ Mac OS X: Chrome : ~/Library/Application Support/Google/Chrome/Default/Extensions/ Chromium: ~/Library/Application Support/Chromium/Default/Extensions/
Although you can change it by running Chrome with the --user-data-dir=
option.
Did you import it? Importing matplotlib
is not enough.
>>> import matplotlib
>>> matplotlib.pyplot
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
AttributeError: 'module' object has no attribute 'pyplot'
but
>>> import matplotlib.pyplot
>>> matplotlib.pyplot
works.
pyplot is a submodule of matplotlib and not immediately imported when you import matplotlib.
The most common form of importing pyplot is
import matplotlib.pyplot as plt
Thus, your statements won't be too long, e.g.
plt.plot([1,2,3,4,5])
instead of
matplotlib.pyplot.plot([1,2,3,4,5])
And: pyplot
is not a function, it's a module! So don't call it, use the functions defined inside this module instead. See my example above
-------------Following is applicable only to Vue 1 --------------
Passing data can be done in multiple ways. The method depends on the type of use.
If you want to pass data from your html while you add a new component. That is done using props.
<my-component prop-name="value"></my-component>
This prop value will be available to your component only if you add the prop name prop-name
to your props
attribute.
When data is passed from a component to another component because of some dynamic or static event. That is done by using event dispatchers and broadcasters. So for example if you have a component structure like this:
<my-parent>
<my-child-A></my-child-A>
<my-child-B></my-child-B>
</my-parent>
And you want to send data from <my-child-A>
to <my-child-B>
then in <my-child-A>
you will have to dispatch an event:
this.$dispatch('event_name', data);
This event will travel all the way up the parent chain. And from whichever parent you have a branch toward <my-child-B>
you broadcast the event along with the data. So in the parent:
events:{
'event_name' : function(data){
this.$broadcast('event_name', data);
},
Now this broadcast will travel down the child chain. And at whichever child you want to grab the event, in our case <my-child-B>
we will add another event:
events: {
'event_name' : function(data){
// Your code.
},
},
The third way to pass data is through parameters in v-links. This method is used when components chains are completely destroyed or in cases when the URI changes. And i can see you already understand them.
Decide what type of data communication you want, and choose appropriately.
Implementation with Guzzle library:
use GuzzleHttp\Client;
use GuzzleHttp\RequestOptions;
$httpClient = new Client();
$response = $httpClient->post(
'https://postman-echo.com/post',
[
RequestOptions::BODY => 'POST raw request content',
RequestOptions::HEADERS => [
'Content-Type' => 'application/x-www-form-urlencoded',
],
]
);
echo(
$response->getBody()->getContents()
);
PHP CURL extension:
$curlHandler = curl_init();
curl_setopt_array($curlHandler, [
CURLOPT_URL => 'https://postman-echo.com/post',
CURLOPT_RETURNTRANSFER => true,
/**
* Specify POST method
*/
CURLOPT_POST => true,
/**
* Specify request content
*/
CURLOPT_POSTFIELDS => 'POST raw request content',
]);
$response = curl_exec($curlHandler);
curl_close($curlHandler);
echo($response);