If you want the output to be
array([1.6e-01, 9.9e-01, 3.6e-04])
the problem is not really a missing feature of NumPy, but rather that this sort of rounding is not a standard thing to do. You can make your own rounding function which achieves this like so:
def my_round(value, N):
exponent = np.ceil(np.log10(value))
return 10**exponent*np.round(value*10**(-exponent), N)
For a general solution handling 0
and negative values as well, you can do something like this:
def my_round(value, N):
value = np.asarray(value).copy()
zero_mask = (value == 0)
value[zero_mask] = 1.0
sign_mask = (value < 0)
value[sign_mask] *= -1
exponent = np.ceil(np.log10(value))
result = 10**exponent*np.round(value*10**(-exponent), N)
result[sign_mask] *= -1
result[zero_mask] = 0.0
return result
I have different solution:
SELECT AUTO_INCREMENT - 1 as CurrentId FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA = 'dbname' AND TABLE_NAME = 'tablename'
You can have Read only or Read and Write only on the volume
docker -v /on/my/host/1:/on/the/container/1:ro \
docker -v /on/my/host/2:/on/the/container/2:rw \
You need to use the document.getElementsByClassName('class_name');
and dont forget that the returned value is an array of elements so if you want the first one use:
document.getElementsByClassName('class_name')[0]
UPDATE
Now you can use:
document.querySelector(".class_name")
to get the first element with the class_name
CSS class (null
will be returned if non of the elements on the page has this class name)
or document.querySelectorAll(".class_name")
to get a NodeList of elements with the class_name
css class (empty NodeList will be returned if non of. the elements on the the page has this class name).
all:
echo ${PATH}
Or change PATH just for one command:
all:
PATH=/my/path:${PATH} cmd
private static List<Path> listFilesOldestFirst(final String directoryPath) throws IOException {
try (final Stream<Path> fileStream = Files.list(Paths.get(directoryPath))) {
return fileStream
.map(Path::toFile)
.collect(Collectors.toMap(Function.identity(), File::lastModified))
.entrySet()
.stream()
.sorted(Map.Entry.comparingByValue())
// .sorted(Collections.reverseOrder(Map.Entry.comparingByValue())) // replace the previous line with this line if you would prefer files listed newest first
.map(Map.Entry::getKey)
.map(File::toPath) // remove this line if you would rather work with a List<File> instead of List<Path>
.collect(Collectors.toList());
}
}
private static List<File> listFilesOldestFirst(final String directoryPath) throws IOException {
final List<File> files = Arrays.asList(new File(directoryPath).listFiles());
final Map<File, Long> constantLastModifiedTimes = new HashMap<File,Long>();
for (final File f : files) {
constantLastModifiedTimes.put(f, f.lastModified());
}
Collections.sort(files, new Comparator<File>() {
@Override
public int compare(final File f1, final File f2) {
return constantLastModifiedTimes.get(f1).compareTo(constantLastModifiedTimes.get(f2));
}
});
return files;
}
Both of these solutions create a temporary map data structure to save off a constant last modified time for each file in the directory. The reason we need to do this is that if your files are being updated or modified while your sort is being performed then your comparator will be violating the transitivity requirement of the comparator interface's general contract because the last modified times may be changing during the comparison.
If, on the other hand, you know the files will not be updated or modified during your sort, you can get away with pretty much any other answer submitted to this question, of which I'm partial to:
private static List<Path> listFilesOldestFirst(final String directoryPath) throws IOException {
try (final Stream<Path> fileStream = Files.list(Paths.get(directoryPath))) {
return fileStream
.map(Path::toFile)
.sorted(Comparator.comparing(File::lastModified))
.map(File::toPath) // remove this line if you would rather work with a List<File> instead of List<Path>
.collect(Collectors.toList());
}
}
Note: I know you can avoid the translation to and from File objects in the above example by using Files::getLastModifiedTime api in the sorted stream operation, however, then you need to deal with checked IO exceptions inside your lambda which is always a pain. I'd say if performance is critical enough that the translation is unacceptable then I'd either deal with the checked IOException in the lambda by propagating it as an UncheckedIOException or I'd forego the Files api altogether and deal only with File objects:
final List<File> sorted = Arrays.asList(new File(directoryPathString).listFiles());
sorted.sort(Comparator.comparing(File::lastModified));
As of C# 9(.net 5 or .net core 3.1), you may want to use records as it does Value Based Equality.
In addition to Ishan's answer, if you want to draw programatically without user interaction, you can edit the class just a little like this.
public class DrawingCanvas extends View {
private Paint mPaint;
private Path mPath;
private boolean isUserInteractionEnabled = false;
public DrawingCanvas(Context context, AttributeSet attrs) {
super(context, attrs);
mPaint = new Paint();
mPaint.setColor(Color.RED);
mPaint.setStyle(Paint.Style.STROKE);
mPaint.setStrokeJoin(Paint.Join.ROUND);
mPaint.setStrokeCap(Paint.Cap.ROUND);
mPaint.setStrokeWidth(10);
mPath = new Path();
}
@Override
protected void onDraw(Canvas canvas) {
canvas.drawPath(mPath, mPaint);
super.onDraw(canvas);
}
@Override
public boolean onTouchEvent(MotionEvent event) {
if (isUserInteractionEnabled) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
mPath.moveTo(event.getX(), event.getY());
break;
case MotionEvent.ACTION_MOVE:
mPath.lineTo(event.getX(), event.getY());
invalidate();
break;
case MotionEvent.ACTION_UP:
break;
}
}
return true;
}
public void moveCursorTo(float x, float y) {
mPath.moveTo(x, y);
}
public void makeLine(float toX, float toY) {
mPath.lineTo(toX, toY);
}
public void setUserInteractionEnabled(boolean userInteractionEnabled) {
isUserInteractionEnabled = userInteractionEnabled;
}
}
And then use it like
drawingCanvas.setUserInteractionEnabled(true) // to enable user interaction
drawingCanvas.setUserInteractionEnabled(true) // to disable user interaction
To Draw programatically
drawingCanvas.moveCursorTo(70f, 70f) // Move the cursor (Define starting point)
drawingCanvas.makeLine(200f, 200f) // End point (To where you need to draw)
You can delete individual names with del
:
del x
or you can remove them from the globals()
object:
for name in dir():
if not name.startswith('_'):
del globals()[name]
This is just an example loop; it defensively only deletes names that do not start with an underscore, making a (not unreasoned) assumption that you only used names without an underscore at the start in your interpreter. You could use a hard-coded list of names to keep instead (whitelisting) if you really wanted to be thorough. There is no built-in function to do the clearing for you, other than just exit and restart the interpreter.
Modules you've imported (import os
) are going to remain imported because they are referenced by sys.modules
; subsequent imports will reuse the already imported module object. You just won't have a reference to them in your current global namespace.
Either of the two should do the trick -
char *readFile(char *fileName)
{
FILE *file;
char *code = malloc(1000 * sizeof(char));
char *p = code;
file = fopen(fileName, "r");
do
{
*p++ = (char)fgetc(file);
} while(*p != EOF);
*p = '\0';
return code;
}
char *readFile(char *fileName)
{
FILE *file;
int i = 0;
char *code = malloc(1000 * sizeof(char));
file = fopen(fileName, "r");
do
{
code[i++] = (char)fgetc(file);
} while(code[i-1] != EOF);
code[i] = '\0'
return code;
}
Like the other posters have pointed out, you need to ensure that the file size does not exceed 1000 characters. Also, remember to free the memory when you're done using it.
ALTER TABLE <table_name> MODIFY <column_name> DEFAULT <defult_value>
EX: ALTER TABLE AAA MODIFY ID DEFAULT AAA_SEQUENCE.nextval
Tested on Oracle Database 12c Enterprise Edition Release 12.2.0.1.0
This header is defined in RFC 2183, so that would be the best place to start reading.
Permitted values are those registered with the Internet Assigned Numbers Authority (IANA); their registry of values should be seen as the definitive source.
Instead of overriding the library search path at runtime with LD_LIBRARY_PATH, you could instead bake it into the binary itself with rpath
. If you link with GCC adding -Wl,-rpath,<libdir>
should do the trick, if you link with ld it's just -rpath <libdir>
.
Although the accepted answer works fine, since v0.21.0rc1 it gives a warning
UserWarning: Pandas doesn't allow columns to be created via a new attribute name
Instead, one can do
df[["X", "A", "B", "C"]].plot(x="X", kind="bar")
[Edit] After reviewing the Mongoose documentation, it looks like you can send each query result as a separate chunk; the web server uses chunked transfer encoding by default so all you have to do is wrap an array around the items to make it a valid JSON object.
Roughly (untested):
app.get('/users/:email/messages/unread', function(req, res, next) {
var firstItem=true, query=MessageInfo.find(/*...*/);
res.writeHead(200, {'Content-Type': 'application/json'});
query.each(function(docs) {
// Start the JSON array or separate the next element.
res.write(firstItem ? (firstItem=false,'[') : ',');
res.write(JSON.stringify({ msgId: msg.fileName }));
});
res.end(']'); // End the JSON array and response.
});
Alternatively, as you mention, you can simply send the array contents as-is. In this case the response body will be buffered and sent immediately, which may consume a large amount of additional memory (above what is required to store the results themselves) for large result sets. For example:
// ...
var query = MessageInfo.find(/*...*/);
res.writeHead(200, {'Content-Type': 'application/json'});
res.end(JSON.stringify(query.map(function(x){ return x.fileName })));
Here is an efficient python solution:
def solution(A):
m = max(A)
if m < 1:
return 1
A = set(A)
B = set(range(1, m + 1))
D = B - A
if len(D) == 0:
return m + 1
else:
return min(D)
Detecting mobile devices
Related answer: https://stackoverflow.com/a/13805337/1306809
There's no single approach that's truly foolproof. The best bet is to mix and match a variety of tricks as needed, to increase the chances of successfully detecting a wider range of handheld devices. See the link above for a few different options.
Map default.aspx as HttpHandler route and redirect to CreateThings.aspx from within the HttpHandler.
<add verb="GET" path="default.aspx" type="RedirectHandler"/>
Make sure Default.aspx does not exists physically at your application root. If it exists physically the HttpHandler will not be given any chance to execute. Physical file overrides HttpHandler mapping.
Moreover you can re-use this for pages other than default.aspx.
<add verb="GET" path="index.aspx" type="RedirectHandler"/>
//RedirectHandler.cs in your App_Code
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
/// <summary>
/// Summary description for RedirectHandler
/// </summary>
public class RedirectHandler : IHttpHandler
{
public RedirectHandler()
{
//
// TODO: Add constructor logic here
//
}
#region IHttpHandler Members
public bool IsReusable
{
get { return true; }
}
public void ProcessRequest(HttpContext context)
{
context.Response.Redirect("CreateThings.aspx");
context.Response.End();
}
#endregion
}
I have write down some code for other question which is similar to this one, but that question got duplicated so i can't answer there so i am just putting my code here if someone looking for same requirement.
It's not fully working code, you need to make some minor changes to get it worked.
Here is the code:
I've used @Graeme idea of using spannable text.
String colorfulText = "colorfulText";
Spannable span = new SpannableString(colorfulText);
for ( int i = 0, len = colorfulText.length(); i < len; i++ ){
span.setSpan(new ForegroundColorSpan(getRandomColor()), i, i+1,Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
}
((TextView)findViewById(R.id.txtSplashscreenCopywrite)).setText(span);
Random Color Method:
private int getRandomColor(){
Random rnd = new Random();
return Color.argb(255, rnd.nextInt(256), rnd.nextInt(256), rnd.nextInt(256));
}
a.sum(0)
should solve the problem. It is a 2d np.array
and you will get the sum of all column. axis=0
is the dimension that points downwards and axis=1
the one that points to the right.
I'm using next variant:
Activity of my custom Dialog:
public class AlertDialogue extends AppCompatActivity {
Button btnOk;
TextView textDialog;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
supportRequestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_alert_dialogue);
textDialog = (TextView)findViewById(R.id.text_dialog) ;
textDialog.setText("Hello, I'm the dialog text!");
btnOk = (Button) findViewById(R.id.button_dialog);
btnOk.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
finish();
}
});
}
}
activity_alert_dialogue.xml:
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="300dp"
android:layout_height="wrap_content"
tools:context=".AlertDialogue">
<TextView
android:id="@+id/text_dialog"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="24dp"
android:text="Hello, I'm the dialog text!"
android:textColor="@android:color/darker_gray"
android:textSize="16dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<Button
android:id="@+id/button_dialog"
android:layout_width="wrap_content"
android:layout_height="36dp"
android:layout_margin="8dp"
android:background="@android:color/transparent"
android:text="Ok"
android:textColor="@android:color/black"
android:textSize="14dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toBottomOf="@+id/text_dialog" />
</android.support.constraint.ConstraintLayout>
Manifest:
<activity android:name=".AlertDialogue"
android:theme="@style/AlertDialogNoTitle">
</activity>
Style:
<style name="AlertDialogNoTitle" parent="Theme.AppCompat.Light.Dialog">
<item name="android:windowNoTitle">true</item>
</style>
The second parameter of the callback function passed to each() will contain the actual DOM element and not a jQuery wrapper object. You can call the getAttribute() method of the element:
$('#category_sorting_form_save').click(function() {
var elements = $("#category_sorting_elements > div");
$.each(elements, function(key, value) {
console.info(key, ": ", value);
console.info("cat_id: ", value.getAttribute('cat_id'));
});
});
Or wrap the element in a jQuery object yourself:
$('#category_sorting_form_save').click(function() {
var elements = $("#category_sorting_elements > div");
$.each(elements, function(key, value) {
console.info(key, ": ", value);
console.info("cat_id: ", $(value).attr('cat_id'));
});
});
Or simply use $(this)
:
$('#category_sorting_form_save').click(function() {
var elements = $("#category_sorting_elements > div");
$.each(elements, function() {
console.info("cat_id: ", $(this).attr('cat_id'));
});
});
Let me add my grain of sand here
I personally like adding a constructors as static functions that return an instance of the class (the object). The following code is an example:
class Person
{
private $name;
private $email;
public static function withName($name)
{
$person = new Person();
$person->name = $name;
return $person;
}
public static function withEmail($email)
{
$person = new Person();
$person->email = $email;
return $person;
}
}
Note that now you can create instance of the Person class like this:
$person1 = Person::withName('Example');
$person2 = Person::withEmail('yo@mi_email.com');
I took that code from:
http://alfonsojimenez.com/post/30377422731/multiple-constructors-in-php
Try git add -A
instead of git add .
I was receiving the error (I'm using Vue) and I switched my onclick="someFunction()"
to @click="someFunction"
and now they are working.
Try jamspell - it works pretty well for automatic spelling correction:
import jamspell
corrector = jamspell.TSpellCorrector()
corrector.LoadLangModel('en.bin')
corrector.FixFragment('Some sentnec with error')
# u'Some sentence with error'
corrector.GetCandidates(['Some', 'sentnec', 'with', 'error'], 1)
# ('sentence', 'senate', 'scented', 'sentinel')
Look there is a far easier solution to your problem:
ImageView imageView;
protected void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.your_layout);
imageView =(ImageView)findViewById(R.id.your_imageView);
Bitmap imageBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.your_image);
Point screenSize = new Point();
getWindowManager().getDefaultDisplay().getSize(screenSize);
Bitmap temp = Bitmap.createBitmap(screenSize.x, screenSize.x, Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(temp);
canvas.drawBitmap(imageBitmap,null, new Rect(0,0,screenSize.x,screenSize.x), null);
imageView.setImageBitmap(temp);
}
(My answer is partially based on that from Yoank, and partially on a comment by Justin Time on another question.)
cout << endl << "Press <Enter> to continue...";
cin.ignore(numeric_limits<streamsize>::max(), '\n');
cin.get();
Better to use the native javascript to find the element by id like: document.getElementById("yourFormElementID").
$.ajax( {
url: "http://yourlocationtopost/",
type: 'POST',
data: new FormData(document.getElementById("yourFormElementID")),
processData: false,
contentType: false
} ).done(function(d) {
console.log('done');
});
Add a linefeed ("\n") to the output:
<textarea>Hello
Bybye</textarea>
Will have a newline in it.
You can just use sum(people$Weight)
.
sum
sums up a vector, and people$Weight
retrieves the weight column from your data frame.
Note - you can get built-in help by using ?sum
, ?colSums
, etc. (by the way, colSums
will give you the sum for each column).
In my case the problem was the line with default instructions in switch block:
handlePageChange = ({ btnType}) => {
let { page } = this.state;
switch (btnType) {
case 'next':
this.updatePage(page + 1);
break;
case 'prev':
this.updatePage(page - 1);
break;
default: null;
}
}
Instead of
default: null;
The line
default: ;
worked for me.
.each()
should work for you. http://api.jquery.com/jQuery.each/ or http://api.jquery.com/each/ or you could use .map
.
var newArray = $(array).map(function(i) {
return $('#event' + i, response).html();
});
Edit: I removed the adding of the prepended 0 since it is suggested to not use that.
If you must have it use
var newArray = $(array).map(function(i) {
var number = '' + i;
if (number.length == 1) {
number = '0' + number;
}
return $('#event' + number, response).html();
});
Collections.sort(teamsName.subList(1, teamsName.size()));
The code above will reflect the actual sublist of your original list sorted.
Yes, constructors are allowed to throw exceptions.
However, be very wise in choosing what exceptions they should be - checked exceptions or unchecked. Unchecked exceptions are basically subclasses of RuntimeException.
In almost all cases (I could not come up with an exception to this case), you'll need to throw a checked exception. The reason being that unchecked exceptions (like NullPointerException) are normally due to programming errors (like not validating inputs sufficiently).
The advantage that a checked exception offers is that the programmer is forced to catch the exception in his instantiation code, and thereby realizes that there can be a failure to create the object instance. Of course, only a code review will catch the poor programming practice of swallowing an exception.
Regex is compiled so for speed create it once and reuse it.
The new takes longer than the IsMatch.
This only checks for all digits.
It does not check for range.
If you need to test range then TryParse is the way to go.
private static Regex regexInt = new Regex("^\\d+$");
static bool CheckReg(string value)
{
return regexInt.IsMatch(value);
}
You can start with a custom number and increment from there, for example you want to add a cheque number for each payment you can do:
select @StartChequeNumber = 3446;
SELECT
((ROW_NUMBER() OVER(ORDER BY AnyColumn)) + @StartChequeNumber ) AS 'ChequeNumber'
,* FROM YourTable
will give the correct cheque number for each row.
[your Array name] = Empty
Then the array will be without content and can be filled again.
If the number matches than I am checking it's occur first time or not with help of "indexOf()" if the number matches first time then print and save into in a string so, that when the next time same number matches then it's won't print because due to "indexOf()" condition will be false.
class Intersection
{
public static void main(String[] args)
{
String s="";
int[] array1 = {1, 2, 5, 5, 8, 9, 7,2,3512451,4,4,5 ,10};
int[] array2 = {1, 0, 6, 15, 6, 5,4, 1,7, 0,5,4,5,2,3,8,5,3512451};
for (int i = 0; i < array1.length; i++)
{
for (int j = 0; j < array2.length; j++)
{
char c=(char)(array1[i]);
if(array1[i] == (array2[j])&&s.indexOf(c)==-1)
{
System.out.println("Common element is : "+(array1[i]));
s+=c;
}
}
}
}
}
As others have observed, the precise syntax for the command varies across different flavours of DBMS. The syntax you use works in Oracle:
SQL> desc MACAddresses
Name Null? Type
----------------------------------------- -------- ----------------------------
COMPUTER NUMBER
MACADDRESS VARCHAR2(12)
CORRECTED_MACADDRESS NOT NULL VARCHAR2(17)
SQL> alter table MACAddresses
2 modify corrected_MACAddress null
3 /
Table altered.
SQL> desc MACAddresses
Name Null? Type
----------------------------------------- -------- ----------------------------
COMPUTER NUMBER
MACADDRESS VARCHAR2(12)
CORRECTED_MACADDRESS VARCHAR2(17)
SQL>
Also check for any long running processes executed from your .NET app against the DB. For example you may be calling a stored procedure or query which does not have enough time to finish which can show in your logs as:
Execution Timeout Expired. The timeout period elapsed prior to completion of the operation or the server is not responding.
Check the command timeout settings Try to run a trace (profiler) and see what is happening on the DB side...
For the record, general_log and slow_log were introduced in 5.1.6:
http://dev.mysql.com/doc/refman/5.1/en/log-destinations.html
5.2.1. Selecting General Query and Slow Query Log Output Destinations
As of MySQL 5.1.6, MySQL Server provides flexible control over the destination of output to the general query log and the slow query log, if those logs are enabled. Possible destinations for log entries are log files or the general_log and slow_log tables in the mysql database
you can use insert ignore for such case, it will ignore if it gets duplicate records INSERT IGNORE ... ; -- without ON DUPLICATE KEY
Normally when an optimization algorithm does not converge, it is usually because the problem is not well-conditioned, perhaps due to a poor scaling of the decision variables. There are a few things you can try.
C
, is set appropriately.max_iter
to a larger value. The default is 1000.dual = True
if number of features > number of examples and vice versa. This solves the SVM optimization problem using the dual formulation. Thanks @Nino van Hooff for pointing this out, and @JamesKo for spotting my mistake.Note: One should not ignore this warning.
This warning came about because
Solving the linear SVM is just solving a quadratic optimization problem. The solver is typically an iterative algorithm that keeps a running estimate of the solution (i.e., the weight and bias for the SVM). It stops running when the solution corresponds to an objective value that is optimal for this convex optimization problem, or when it hits the maximum number of iterations set.
If the algorithm does not converge, then the current estimate of the SVM's parameters are not guaranteed to be any good, hence the predictions can also be complete garbage.
Edit
In addition, consider the comment by @Nino van Hooff and @5ervant to use the dual formulation of the SVM. This is especially important if the number of features you have, D, is more than the number of training examples N. This is what the dual formulation of the SVM is particular designed for and helps with the conditioning of the optimization problem. Credit to @5ervant for noticing and pointing this out.
Furthermore, @5ervant also pointed out the possibility of changing the solver, in particular the use of the L-BFGS solver. Credit to him (i.e., upvote his answer, not mine).
I would like to provide a quick rough explanation for those who are interested (I am :)) why this matters in this case. Second-order methods, and in particular approximate second-order method like the L-BFGS solver, will help with ill-conditioned problems because it is approximating the Hessian at each iteration and using it to scale the gradient direction. This allows it to get better convergence rate but possibly at a higher compute cost per iteration. That is, it takes fewer iterations to finish but each iteration will be slower than a typical first-order method like gradient-descent or its variants.
For e.g., a typical first-order method might update the solution at each iteration like
x(k + 1) = x(k) - alpha(k) * gradient(f(x(k)))
where alpha(k), the step size at iteration k, depends on the particular choice of algorithm or learning rate schedule.
A second order method, for e.g., Newton, will have an update equation
x(k + 1) = x(k) - alpha(k) * Hessian(x(k))^(-1) * gradient(f(x(k)))
That is, it uses the information of the local curvature encoded in the Hessian to scale the gradient accordingly. If the problem is ill-conditioned, the gradient will be pointing in less than ideal directions and the inverse Hessian scaling will help correct this.
In particular, L-BFGS mentioned in @5ervant's answer is a way to approximate the inverse of the Hessian as computing it can be an expensive operation.
However, second-order methods might converge much faster (i.e., requires fewer iterations) than first-order methods like the usual gradient-descent based solvers, which as you guys know by now sometimes fail to even converge. This can compensate for the time spent at each iteration.
In summary, if you have a well-conditioned problem, or if you can make it well-conditioned through other means such as using regularization and/or feature scaling and/or making sure you have more examples than features, you probably don't have to use a second-order method. But these days with many models optimizing non-convex problems (e.g., those in DL models), second order methods such as L-BFGS methods plays a different role there and there are evidence to suggest they can sometimes find better solutions compared to first-order methods. But that is another story.
eXtcos looks promising. Imagine you want to find all the classes that:
With eXtcos this is as simple as
ClasspathScanner scanner = new ClasspathScanner();
final Set<Class> classStore = new ArraySet<Class>();
Set<Class> classes = scanner.getClasses(new ClassQuery() {
protected void query() {
select().
from(“common”).
andStore(thoseExtending(Component.class).into(classStore)).
returning(allAnnotatedWith(MyComponent.class));
}
});
It's pretty simple really:
a[start:stop] # items start through stop-1
a[start:] # items start through the rest of the array
a[:stop] # items from the beginning through stop-1
a[:] # a copy of the whole array
There is also the step
value, which can be used with any of the above:
a[start:stop:step] # start through not past stop, by step
The key point to remember is that the :stop
value represents the first value that is not in the selected slice. So, the difference between stop
and start
is the number of elements selected (if step
is 1, the default).
The other feature is that start
or stop
may be a negative number, which means it counts from the end of the array instead of the beginning. So:
a[-1] # last item in the array
a[-2:] # last two items in the array
a[:-2] # everything except the last two items
Similarly, step
may be a negative number:
a[::-1] # all items in the array, reversed
a[1::-1] # the first two items, reversed
a[:-3:-1] # the last two items, reversed
a[-3::-1] # everything except the last two items, reversed
Python is kind to the programmer if there are fewer items than you ask for. For example, if you ask for a[:-2]
and a
only contains one element, you get an empty list instead of an error. Sometimes you would prefer the error, so you have to be aware that this may happen.
slice()
objectThe slicing operator []
is actually being used in the above code with a slice()
object using the :
notation (which is only valid within []
), i.e.:
a[start:stop:step]
is equivalent to:
a[slice(start, stop, step)]
Slice objects also behave slightly differently depending on the number of arguments, similarly to range()
, i.e. both slice(stop)
and slice(start, stop[, step])
are supported.
To skip specifying a given argument, one might use None
, so that e.g. a[start:]
is equivalent to a[slice(start, None)]
or a[::-1]
is equivalent to a[slice(None, None, -1)]
.
While the :
-based notation is very helpful for simple slicing, the explicit use of slice()
objects simplifies the programmatic generation of slicing.
I've made a Python function where you enter the table and column to remove as arguments:
def removeColumn(table, column):
columns = []
for row in c.execute('PRAGMA table_info(' + table + ')'):
columns.append(row[1])
columns.remove(column)
columns = str(columns)
columns = columns.replace("[", "(")
columns = columns.replace("]", ")")
for i in ["\'", "(", ")"]:
columns = columns.replace(i, "")
c.execute('CREATE TABLE temptable AS SELECT ' + columns + ' FROM ' + table)
c.execute('DROP TABLE ' + table)
c.execute('ALTER TABLE temptable RENAME TO ' + table)
conn.commit()
As per the info on Duda's and MeBigFatGuy's answers this won't work if there is a foreign key on the table, but this can be fixed with 2 lines of code (creating a new table and not just renaming the temporary table)
From your question, you are running python2.7 and Cygwin.
Python should be installed for windows, which from your question it seems it is. If "which python" prints out /usr/bin/python , then from the bash prompt you are running the cygwin version.
Set the Python Environmental variables appropriately , for instance in my case:
PY_HOME=C:\opt\Python27
PYTHONPATH=C:\opt\Python27;c:\opt\Python27\Lib
In that case run cygwin setup and uninstall everything python. After that run "which pydoc", if it shows
/usr/bin/pydoc
Replace /usr/bin/pydoc with
#! /bin/bash
/cygdrive/c/WINDOWS/system32/cmd /c %PYTHONHOME%\Scripts\\pydoc.bat
Then add this to $PY_HOME/Scripts/pydoc.bat
rem wrapper for pydoc on Win32
@python c:\opt\Python27\Lib\pydoc.py %*
Now when you type in the cygwin bash prompt you should see:
$ pydoc
pydoc - the Python documentation tool
pydoc.py <name> ...
Show text documentation on something. <name>
may be the name of a Python keyword, topic,
function, module, or package, or a dotted
reference to a class or function within a
module or module in a package.
...
The error message says it all: your connection timed out. This means your request did not get a response within some (default) timeframe. The reasons that no response was received is likely to be one of:
Note that firewalls and port or IP blocking may be in place by your ISP
It is actually 53 binary places, which translates to 15 stable decimal places, meaning that if you round a start out with a number with 15 decimal places, convert it to a double
, and then round the double
back to 15 decimal places you'll get the same number. To uniquely represent a double
you need 17 decimal places (meaning that for every number with 17 decimal places, there's a unique closest double
) which is why 17 places are showing up, but not all 17-decimal numbers map to different double
values (like in the examples in the other answers).
This can be solved by using https://twitter.com/intent/tweet
instead of http://www.twitter.com/share
. Using the intent/tweet
function, you simply URL encode your entire URL and it works like a charm.
Steven Levithan once wrote about how to implement a Faster JavaScript Trim. It’s definitely worth a look.
Was updating an old website using nuget (including .Net update and MVC update).
I deleted the System.Net.HTTP reference in VS2017 (it was to version 2.0.0.0) and re-added the reference, which then showed 4.2.0.0.
I then updated a ton of 'packages' using nuget and got the error message, then noticed something had reset the reference to 2.0.0.0, so I removed and re-added again and it works fine... bizarre.
You don't have that many options.
You'll probably want to use one of:
node-soap
)It overwrites content on the page which is the most obvious reason but I wouldn't call it "bad".
It just doesn't have much use unless you're creating an entire document using JavaScript in which case you may start with document.write.
Even so, you aren't really leveraging the DOM when you use document.write--you are just dumping a blob of text into the document so I'd say it's bad form.
This will convert an integer to a 2 digit hex string with the 0x prefix:
strHex = "0x%0.2X" % 255
As AngularJS factories are singletons, you can simply store the result of the http request and retrieve it next time your service is injected into something.
angular.module('myApp', ['ngResource']).factory('myService',
function($resource) {
var cache = false;
return {
query: function() {
if(!cache) {
cache = $resource('http://example.com/api').query();
}
return cache;
}
};
}
);
add new server (tomcat) with different location. if i am not make mistake you are run multiple project with same tomcat and add same tomcat server on same location ..
add new tomcat for each new workspace.
If you are using a mac/linux and you want to retrieve local parameters to the machine you're using, this is what you'll do:
This will give you everything column property related.
SELECT * INTO TMP1
FROM ( SELECT TOP 1 /* rest of your query expression here */ );
SELECT o.name AS obj_name, TYPE_NAME(c.user_type_id) AS type_name, c.*
FROM sys.objects AS o
JOIN sys.columns AS c ON o.object_id = c.object_id
WHERE o.name = 'TMP1';
DROP TABLE TMP1;
Late resurrection.
Your query seems very similar to the one at page 259 of the book Pro JPA 2: Mastering the Java Persistence API, which in JPQL reads:
SELECT e
FROM Employee e
WHERE e IN (SELECT emp
FROM Project p JOIN p.employees emp
WHERE p.name = :project)
Using EclipseLink + H2 database, I couldn't get neither the book's JPQL nor the respective criteria working. For this particular problem I have found that if you reference the id directly instead of letting the persistence provider figure it out everything works as expected:
SELECT e
FROM Employee e
WHERE e.id IN (SELECT emp.id
FROM Project p JOIN p.employees emp
WHERE p.name = :project)
Finally, in order to address your question, here is an equivalent strongly typed criteria query that works:
CriteriaBuilder cb = em.getCriteriaBuilder();
CriteriaQuery<Employee> c = cb.createQuery(Employee.class);
Root<Employee> emp = c.from(Employee.class);
Subquery<Integer> sq = c.subquery(Integer.class);
Root<Project> project = sq.from(Project.class);
Join<Project, Employee> sqEmp = project.join(Project_.employees);
sq.select(sqEmp.get(Employee_.id)).where(
cb.equal(project.get(Project_.name),
cb.parameter(String.class, "project")));
c.select(emp).where(
cb.in(emp.get(Employee_.id)).value(sq));
TypedQuery<Employee> q = em.createQuery(c);
q.setParameter("project", projectName); // projectName is a String
List<Employee> employees = q.getResultList();
I just had the same problem. I'd say it has nothing to do with the apache.conf.
a2ensite must have changed - line 532 is the line that enforces the .conf suffix:
else {
$dir = 'sites';
$sffx = '.conf';
$reload = 'reload';
}
If you change it to:
else {
$dir = 'sites';
#$sffx = '.conf';
$sffx = '';
$reload = 'reload';
}
...it will work without any suffix.
Of course you wouldn't want to change the a2ensite script, but changing the conf file's suffix is the correct way.
It's probably just a way of enforcing the ".conf"-suffix.
I'd use modulus and a loop.
int[] GetIntArray(int num)
{
List<int> listOfInts = new List<int>();
while(num > 0)
{
listOfInts.Add(num % 10);
num = num / 10;
}
listOfInts.Reverse();
return listOfInts.ToArray();
}
In your user settings add:
"C_Cpp.default.includePath":["path1","path2"]
Please try the following code below:
//Here I am using a reader object to fetch data from database, along with sqlcommand onject (cmd).
//Once the data is loaded to the Datatable object (datatable) you can loop through it using the datatable.rows.count prop.
using (reader = cmd.ExecuteReader())
{
// Load the Data table object
dataTable.Load(reader);
if (dataTable.Rows.Count > 0)
{
DataColumn col = dataTable.Columns["YourColumnName"];
foreach (DataRow row in dataTable.Rows)
{
strJsonData = row[col].ToString();
}
}
}
You are giving the span a 100% width resulting in it expanding to the size of the parent. This means you can’t center-align it, as there is no room to move it.
You could give the span a set width, then add the margin:0 auto
again. This would center-align it.
.left
{
background-color: #999999;
height: 50px;
width: 24.5%;
}
span.panelTitleTxt
{
display:block;
width:100px;
height: 100%;
margin: 0 auto;
}
If you want to do this without VBA, you can use a combination of IF
, ISERROR
, and MATCH
.
So if all values are in column A, enter this formula in column B:
=IF(ISERROR(MATCH(12345,A:A,0)),"Not Found","Value found on row " & MATCH(12345,A:A,0))
This will look for the value "12345" (which can also be a cell reference). If the value isn't found, MATCH
returns "#N/A" and ISERROR
tries to catch that.
If you want to use VBA, the quickest way is to use a FOR loop:
Sub FindMatchingValue()
Dim i as Integer, intValueToFind as integer
intValueToFind = 12345
For i = 1 to 500 ' Revise the 500 to include all of your values
If Cells(i,1).Value = intValueToFind then
MsgBox("Found value on row " & i)
Exit Sub
End If
Next i
' This MsgBox will only show if the loop completes with no success
MsgBox("Value not found in the range!")
End Sub
You can use Worksheet Functions in VBA, but they're picky and sometimes throw nonsensical errors. The FOR
loop is pretty foolproof.
Most of the IDEs also offer auto-formatting features. For example in NetBeans, just press CTRL+K.
It turns out it was too easy. All you have to do is run a cmd as administrator. Then type explorer.exe
and hit enter. That opens up Windows Explorer.
Now right click on your PowerShell script that you want to run, choose "run with PowerShell" which will launch it in PowerShell in administrator mode.
It may ask you to enable the policy to run, type Y and hit enter. Now the script will run in PowerShell as administrator. In case it runs all red, that means your policy didn't take affect yet. Then try again and it should work fine.
Here is a link to an excellent wiki that explains how to put greek symbols in ggplot2. In summary, here is what you do to obtain greek symbols
parse = T
inside geom_text
or annotate
.expression(alpha)
to get greek alpha.labeller = label_parsed
inside facet
.bquote(alpha == .(value))
in legend label.You can see detailed usage of these options in the link
EDIT. The objective of using greek symbols along the tick marks can be achieved as follows
require(ggplot2);
data(tips);
p0 = qplot(sex, data = tips, geom = 'bar');
p1 = p0 + scale_x_discrete(labels = c('Female' = expression(alpha),
'Male' = expression(beta)));
print(p1);
For complete documentation on the various symbols that are available when doing this and how to use them, see ?plotmath
.
The best way around this would be to create an Excel called 'launcher.xlsm' in the same folder as the file you wish to open. In the 'launcher' file put the following code in the 'Workbook' object, but set the constant TargetWBName
to be the name of the file you wish to open.
Private Const TargetWBName As String = "myworkbook.xlsx"
'// First, a function to tell us if the workbook is already open...
Function WorkbookOpen(WorkBookName As String) As Boolean
' returns TRUE if the workbook is open
WorkbookOpen = False
On Error GoTo WorkBookNotOpen
If Len(Application.Workbooks(WorkBookName).Name) > 0 Then
WorkbookOpen = True
Exit Function
End If
WorkBookNotOpen:
End Function
Private Sub Workbook_Open()
'Check if our target workbook is open
If WorkbookOpen(TargetWBName) = False Then
'set calculation to manual
Application.Calculation = xlCalculationManual
Workbooks.Open ThisWorkbook.Path & "\" & TargetWBName
DoEvents
Me.Close False
End If
End Sub
Set the constant 'TargetWBName' to be the name of the workbook that you wish to open.
This code will simply switch calculation to manual, then open the file. The launcher file will then automatically close itself.
*NOTE: If you do not wish to be prompted to 'Enable Content' every time you open this file (depending on your security settings) you should temporarily remove the 'me.close' to prevent it from closing itself, save the file and set it to be trusted, and then re-enable the 'me.close' call before saving again. Alternatively, you could just set the False to True
after Me.Close
If you'd like a simple method to resolve this problem. (Can be used as an extension)
See below:
public static string RemoveFirstInstanceOfString(this string value, string removeString)
{
int index = value.IndexOf(removeString, StringComparison.Ordinal);
return index < 0 ? value : value.Remove(index, removeString.Length);
}
Usage:
string valueWithPipes = "| 1 | 2 | 3";
string valueWithoutFirstpipe = valueWithPipes.RemoveFirstInstanceOfString("|");
//Output, valueWithoutFirstpipe = " 1 | 2 | 3";
Inspired by and modified @LukeH's and @Mike's answer.
Don't forget the StringComparison.Ordinal to prevent issues with Culture settings. https://www.jetbrains.com/help/resharper/2018.2/StringIndexOfIsCultureSpecific.1.html
Just did a quick google search and found that
System.getProperty("user.dir");
returns the current working directory as String. So to get a File out of this, just use
File projectDir = new File(System.getProperty("user.dir"));
IMO the main difference is that Textbox is not strongly typed. TextboxFor take a lambda as a parameter that tell the helper the with element of the model to use in a typed view.
You can do the same things with both, but you should use typed views and TextboxFor when possible.
Look at the r.status_code
attribute:
if r.status_code == 404:
# A 404 was issued.
Demo:
>>> import requests
>>> r = requests.get('http://httpbin.org/status/404')
>>> r.status_code
404
If you want requests
to raise an exception for error codes (4xx or 5xx), call r.raise_for_status()
:
>>> r = requests.get('http://httpbin.org/status/404')
>>> r.raise_for_status()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "requests/models.py", line 664, in raise_for_status
raise http_error
requests.exceptions.HTTPError: 404 Client Error: NOT FOUND
>>> r = requests.get('http://httpbin.org/status/200')
>>> r.raise_for_status()
>>> # no exception raised.
You can also test the response object in a boolean context; if the status code is not an error code (4xx or 5xx), it is considered ‘true’:
if r:
# successful response
If you want to be more explicit, use if r.ok:
.
First, what version of MVC2 are you using? There have been significant changes from preview2 to RC.
Assuming you use the RC, I think you route-mapping should look differently. In the AreaRegistration.cs
in your area, you can register some kind of default route, e.g.
context.MapRoute(
"ShopArea_default",
"{controller}/{action}/{id}",
new { action = "Index", id = "", controller="MyRoute" }
);
The code above will send the user to the MyRouteController
in our ShopArea
per default.
Using an empty string as a second parameter should throw an exception, because a controller must be specified.
Of course you will have to change the default route in Global.asax
so it doesn't interfere with this default route, e.g. by using a prefix for the main site.
Also see this thread and Haack's answer: MVC 2 AreaRegistration Routes Order
Hope this helps.
Oracle's JVM implementation for Java 8 got rid of the PermGen model and replaced it with Metaspace.
You may have to concatenate the % signs with your parameter, e.g.:
LIKE '%' || @query || '%'
Edit: Actually, that may not make any sense at all. I think I may have misunderstood your problem.
Your code can be fixed as follows:
import numpy as np, cv
vis = np.zeros((384, 836), np.float32)
h,w = vis.shape
vis2 = cv.CreateMat(h, w, cv.CV_32FC3)
vis0 = cv.fromarray(vis)
cv.CvtColor(vis0, vis2, cv.CV_GRAY2BGR)
Short explanation:
np.uint32
data type is not supported by OpenCV (it supports uint8
, int8
, uint16
, int16
, int32
, float32
, float64
)cv.CvtColor
can't handle numpy arrays so both arguments has to be converted to OpenCV type. cv.fromarray
do this conversion.cv.CvtColor
must have the same depth. So I've changed source type to 32bit float to match the ddestination.Also I recommend you use newer version of OpenCV python API because it uses numpy arrays as primary data type:
import numpy as np, cv2
vis = np.zeros((384, 836), np.float32)
vis2 = cv2.cvtColor(vis, cv2.COLOR_GRAY2BGR)
To show a grid line on every tick, add
plt.grid(True)
For example:
import matplotlib.pyplot as plt
points = [
(0, 10),
(10, 20),
(20, 40),
(60, 100),
]
x = list(map(lambda x: x[0], points))
y = list(map(lambda x: x[1], points))
plt.scatter(x, y)
plt.grid(True)
plt.show()
In addition, you might want to customize the styling (e.g. solid line instead of dashed line), add:
plt.rc('grid', linestyle="-", color='black')
For example:
import matplotlib.pyplot as plt
points = [
(0, 10),
(10, 20),
(20, 40),
(60, 100),
]
x = list(map(lambda x: x[0], points))
y = list(map(lambda x: x[1], points))
plt.rc('grid', linestyle="-", color='black')
plt.scatter(x, y)
plt.grid(True)
plt.show()
setInterval
returns an ID which you then use to clear the interval.
var intervalId;
on.onclick = function() {
if (intervalId) {
clearInterval(intervalId);
}
intervalId = setInterval(fontChange, 500);
};
off.onclick = function() {
clearInterval(intervalId);
};
These are terms usually used when describing a "FIFO" queue, that is "first in, first out". This works like a line. You decide to go to the movies. There is a long line to buy tickets, you decide to get into the queue to buy tickets, that is "Enqueue". at some point you are at the front of the line, and you get to buy a ticket, at which point you leave the line, that is "Dequeue".
being overwhelmed by being VERY NEW to python i missed some very simple and useful commands given here: Print in terminal with colors using Python? -
eventually decided to use CLINT as an answer that was given there by great and smart people
There is one caveat when you want to plot the histogram from a 2-d numpy array. You need to swap the 2 axes.
import numpy as np
import matplotlib.pyplot as plt
data = np.random.normal(size=(2, 300))
# swapped_data.shape == (300, 2)
swapped_data = np.swapaxes(x, axis1=0, axis2=1)
plt.hist(swapped_data, bins=30, label=['x', 'y'])
plt.legend()
plt.show()
Can also use the dayjs relativeTime plugin to solve this.
import * as dayjs from 'dayjs';
import * as relativeTime from 'dayjs/plugin/relativeTime';
dayjs.extend(relativeTime);
dayjs(dayjs('1990')).fromNow(); // x years ago
I used ToString() on a date with mm instead of MM.
Mozilla has a good article on this, with the code shown below.
Rectangle collision
if (rect1.x < rect2.x + rect2.width &&
rect1.x + rect1.width > rect2.x &&
rect1.y < rect2.y + rect2.height &&
rect1.height + rect1.y > rect2.y) {
// Collision detected!
}
Circle collision
if (distance < circle1.radius + circle2.radius) {
// Collision detected!
}
Since I didn't see this in any of the other answers, and since it's more efficient (in lines of code and in speed), here's a solution in VB.NET using a stringbuilder and lambda functions with String.Join instead of For loops for the columns.
Dim sb As New StringBuilder
sb.Append("<table>")
sb.Append("<tr>" & String.Join("", dt.Columns.OfType(Of DataColumn)().Select(Function(x) "<th>" & x.ColumnName & "</th>").ToArray()) & "</tr>")
For Each row As DataRow In dt.Rows
sb.Append("<tr>" & String.Join("", row.ItemArray.Select(Function(f) "<td>" & f.ToString() & "</td>")) & "</tr>")
Next
sb.Append("</table>")
You can add your own styles to this pretty easily.
The key checks for FAST REFRESH includes the following:
1) An Oracle materialized view log must be present for each base table.
2) The RowIDs of all the base tables must appear in the SELECT list of the MVIEW query definition.
3) If there are outer joins, unique constraints must be placed on the join columns of the inner table.
No 3 is easy to miss and worth highlighting here
If what you want is to hide the navigation bar completely in the controller, a much cleaner solution is to, in the root controller, have something like:
@implementation MainViewController
- (void)viewDidLoad {
self.navigationController.navigationBarHidden=YES;
//...extra code on view load
}
When you push a child view in the controller, the Navigation Bar will remain hidden; if you want to display it just in the child, you'll add the code for displaying it(self.navigationController.navigationBarHidden=NO;)
in the viewWillAppear
callback, and similarly the code for hiding it on viewWillDisappear
In Chrome Browser go to setting , clear browsing history and then reload the page
Remove it using Craco:
module.exports = {
webpack: {
configure: webpackConfig => {
const scopePluginIndex = webpackConfig.resolve.plugins.findIndex(
({ constructor }) => constructor && constructor.name === 'ModuleScopePlugin'
);
webpackConfig.resolve.plugins.splice(scopePluginIndex, 1);
return webpackConfig;
}
}
};
One way is to use ANSI escape sequences:
import sys
import time
for i in range(10):
print("Loading" + "." * i)
sys.stdout.write("\033[F") # Cursor up one line
time.sleep(1)
Also sometimes useful (for example if you print something shorter than before):
sys.stdout.write("\033[K") # Clear to the end of line
The command
x/i $pc
can be set to run all the time using the usual configuration mechanism.
While you can store an unlimited number of files/objects in a single bucket, when you go to list a "directory" in a bucket, it will only give you the first 1000 files/objects in that bucket by default. To access all the files in a large "directory" like this, you need to make multiple calls to their API.
You can use:
var queryString = url.Substring(url.IndexOf('?')).Split('#')[0]
System.Web.HttpUtility.ParseQueryString(queryString)
If you use ApplicationPoolIdentity for your application pool, you may have problem with specifying permission for that "virtual" user in registry editor (there is not such user in system).
So, use subinacl - command-line tool that enables set registry ACL's, or something like this.
Solution:
Instead of using setHeader
method I have used addHeader
.
response.addHeader("Access-Control-Allow-Origin", "*");
*
in above line will allow access to all domains, For allowing access to specific domain only:
response.addHeader("Access-Control-Allow-Origin", "http://www.example.com");
For issues related to IE<=9, Please see here.
If you have access to node you can do a npm install -g rexreplace
and then
rexreplace 'subdomainA.example.com' 'subdomainB.example.com' /home/www/**/*.*
I'm not sure I understand your question. But there are two approaches to making the image invisible...
Pure HTML
<img src="a.gif" style="display: none;" />
Or...
HTML + Javascript
<script type="text/javascript">
document.getElementById("myImage").style.display = "none";
</script>
<img id="myImage" src="a.gif" />
The warning is a reminder that virtual members are likely to be overridden on derived class. In that case whatever the parent class did to a virtual member will be undone or changed by overriding child class. Look at the small example blow for clarity
The parent class below attempts to set value to a virtual member on its constructor. And this will trigger Re-sharper warning, let see on code:
public class Parent
{
public virtual object Obj{get;set;}
public Parent()
{
// Re-sharper warning: this is open to change from
// inheriting class overriding virtual member
this.Obj = new Object();
}
}
The child class here overrides the parent property. If this property was not marked virtual the compiler would warn that the property hides property on the parent class and suggest that you add 'new' keyword if it is intentional.
public class Child: Parent
{
public Child():base()
{
this.Obj = "Something";
}
public override object Obj{get;set;}
}
Finally the impact on use, the output of the example below abandons the initial value set by parent class constructor. And this is what Re-sharper attempts to to warn you, values set on the Parent class constructor are open to be overwritten by the child class constructor which is called right after the parent class constructor.
public class Program
{
public static void Main()
{
var child = new Child();
// anything that is done on parent virtual member is destroyed
Console.WriteLine(child.Obj);
// Output: "Something"
}
}
You can check the Ascii value by e.keychar on KeyPress event of TextBox.
By checking the AscII value you can check for number or character.
Similarly you can write logic to check the Email ID.
I know it's very late for this one... But here is a (not so simple) oneliner to get what you were looking for:
git show-branch --all 2>/dev/null | grep -E "\[$(git branch | grep -E '^\*' | awk '{ printf $2 }')" | tail -n+2 | sed -E "s/^[^\[]*?\[/[/"
git show-branch
(sending the warnings to /dev/null
).grep -E "\[$BRANCH_NAME"
.$BRANCH_NAME
is obtained with git branch | grep -E '^\*' | awk '{ printf $2 }'
(the branch with a star, echoed without that star).tail -n+2
.[$BRANCH_NAME]
with sed -E "s/^[^\[]*?\[/[/"
.Try it this way...
I am considering the HashMap
with key and value of type String
, HashMap<String,String>
HashMap<String,String> hmap = new HashMap<String,String>();
hmap.put("key1","Val1");
hmap.put("key2","Val2");
ArrayList<String> arList = new ArrayList<String>();
for(Map.Entry<String,String> map : hmap.entrySet()){
arList.add(map.getValue());
}
If it is test code you want to time, then you can use the time
attribute:
@Test(timeout = 1000)
public void shouldTakeASecondOrLess()
{
}
If it is production code, there is no simple mechanism, and which solution you use depends upon whether you can alter the code to be timed or not.
If you can change the code being timed, then a simple approach is is to have your timed code remember it's start time, and periodically the current time against this. E.g.
long startTime = System.currentTimeMillis();
// .. do stuff ..
long elapsed = System.currentTimeMillis()-startTime;
if (elapsed>timeout)
throw new RuntimeException("tiomeout");
If the code itself cannot check for timeout, you can execute the code on another thread, and wait for completion, or timeout.
Callable<ResultType> run = new Callable<ResultType>()
{
@Override
public ResultType call() throws Exception
{
// your code to be timed
}
};
RunnableFuture future = new FutureTask(run);
ExecutorService service = Executors.newSingleThreadExecutor();
service.execute(future);
ResultType result = null;
try
{
result = future.get(1, TimeUnit.SECONDS); // wait 1 second
}
catch (TimeoutException ex)
{
// timed out. Try to stop the code if possible.
future.cancel(true);
}
service.shutdown();
}
Bluetooth 4.0 Allows you in a Bluetooth piconet one master can communicate up to 7 active slaves, there can be some other devices up to 248 devices which sleeping.
Also you can use some slaves as bridge to participate with more devices.
I think you could try this too:
const currentEnv = process.env;
process.env = { ENV_NODE: 'whatever' };
// test code...
process.env = currentEnv;
This works for me and you don't need module things
At my work we have recently put together a couple of test suites written in Java to test some RESTful APIs we built. Our Services could invoke other RESTful APIs they depend on. We split it into two suites.
I would definitely recommend doing this. It has worked really well for us. The main advantages are:
This suite requires us to do data set up in peer services which means tests generally take more time to write. As much as possible we use REST clients to do data set up in peer services.
Tests in this suite usually take longer to write, so we put most of our coverage in Suite 1. That being said there is still clear value in this suite as our mocks in Suite 1 may not be behaving quite like the real services.
Before applying WORKDIR. Here the WORKDIR is at the wrong place and is not used wisely.
FROM microsoft/aspnetcore:2
COPY --from=build-env /publish /publish
WORKDIR /publish
ENTRYPOINT ["dotnet", "/publish/api.dll"]
We corrected the above code to put WORKDIR at the right location and optimised the following statements by removing /Publish
FROM microsoft/aspnetcore:2
WORKDIR /publish
COPY --from=build-env /publish .
ENTRYPOINT ["dotnet", "api.dll"]
So it acts like a cd
and sets the tone for the upcoming statements.
Lets say each code is a function and its already written then the following can be used to iter through your coding list and exit the for-loop when a function is executed without error using the "break".
def a(): code a
def b(): code b
def c(): code c
def d(): code d
for func in [a, b, c, d]: # change list order to change execution order.
try:
func()
break
except Exception as err:
print (err)
continue
I used "Exception " here so you can see any error printed. Turn-off the print if you know what to expect and you're not caring (e.g. in case the code returns two or three list items (i,j = msg.split('.')).
What about using Pace
Use this link address here.
https://github.hubspot.com/pace/docs/welcome/
1.On their website select the style you want and paste in index.css
2.go to cdnjs Copy the link for Pace Js and add to your script tags in public/index.html
3.It automatically detect web loads and displays the pace at the browser Top.
You can also modify the height and animation in the css also.
My first impression was that you were wanting a looping command-prompt with looping user-input inside of that looping command-prompt. (Nested user-input.) Maybe it's not what you wanted, but I already wrote this answer before I realized that. So, I'm going to post it in case other people (or even you) find it useful.
You just need nested loops with an input statement at each loop's level.
For instance,
data=""
while 1:
data=raw_input("Command: ")
if data in ("test", "experiment", "try"):
data2=""
while data2=="":
data2=raw_input("Which test? ")
if data2=="chemical":
print("You chose a chemical test.")
else:
print("We don't have any " + data2 + " tests.")
elif data=="quit":
break
else:
pass
What you should also do when you truncate the string to ten characters is add the actual html ellipses entity: …
, rather than three periods.
This isn't a very beautiful answer, but it's what I use to create zero-length vectors:
0[-1] # numeric
""[-1] # character
TRUE[-1] # logical
0L[-1] # integer
A literal is a vector of length 1, and [-1]
removes the first element (the only element in this case) from the vector, leaving a vector with zero elements.
As a bonus, if you want a single NA
of the respective type:
0[NA] # numeric
""[NA] # character
TRUE[NA] # logical
0L[NA] # integer
If you want d1
to have priority in the conflicts, do:
d3 = d2.copy()
d3.update(d1)
Otherwise, reverse d2
and d1
.
If you are in a network of users, then the username will be different:
Environment.UserName
Will Display format : 'Username', rather than
System.Security.Principal.WindowsIdentity.GetCurrent().Name
Will Display format : 'NetworkName\Username'
Choose the format you want.
You probably want to have LI rather than the UL have the background-color:
.selected li {
background-color: red;
}
Then you want to have a dynamic class for the UL:
<ul ng-repeat="vote in votes" ng-click="setSelected()" class="{{selected}}">
Now you need to update the $scope.selected when clicking the row:
$scope.setSelected = function() {
console.log("show", arguments, this);
this.selected = 'selected';
}
and then un-select the previously highlighted row:
$scope.setSelected = function() {
// console.log("show", arguments, this);
if ($scope.lastSelected) {
$scope.lastSelected.selected = '';
}
this.selected = 'selected';
$scope.lastSelected = this;
}
Working solution:
I would suggest you read this article and focus more on how to optimize the overall response to the user request (either a page, a search result etc.)
A good argument for this is the example they give about using gzip to compress the page. Even though ttfb is faster when you do not compress, the overall experience of the user is worst because it takes longer to download content that is not zipped.
private void buttonNextForm(object sender, EventArgs e)
{
NextForm nf = new NextForm();//Object of the form that you want to open
this.hide();//Hide cirrent form.
nf.ShowModel();//Display the next form window
this.Close();//While closing the NextForm, control will come again and will close this form as well
}
I liked the approach of creating a directive to do this (good call @yurzui).
I ended up finding a Medium article Angular "let" Directive which explains this problem nicely and proposes a custom let directive which ended up working great for my use case with minimal code changes.
Here's the gist (at the time of posting) with my modifications:
import { Directive, Input, TemplateRef, ViewContainerRef } from '@angular/core'
interface LetContext <T> {
appLet: T | null
}
@Directive({
selector: '[appLet]',
})
export class LetDirective <T> {
private _context: LetContext <T> = { appLet: null }
constructor(_viewContainer: ViewContainerRef, _templateRef: TemplateRef <LetContext <T> >) {
_viewContainer.createEmbeddedView(_templateRef, this._context)
}
@Input()
set appLet(value: T) {
this._context.appLet = value
}
}
My main changes were:
appLet: T
to appLet: T | null
Not sure why the Angular team hasn't just made an official ngLet directive but whatevs.
Original source code credit goes to @AustinMatherne
The same can be applied to a scenario where the data has been normalized, but now you want a table to have values found in a third table. The following will allow you to update a table with information from a third table that is liked by a second table.
UPDATE t1
LEFT JOIN
t2
ON
t2.some_id = t1.some_id
LEFT JOIN
t3
ON
t2.t3_id = t3.id
SET
t1.new_column = t3.column;
This would be useful in a case where you had users and groups, and you wanted a user to be able to add their own variation of the group name, so originally you would want to import the existing group names into the field where the user is going to be able to modify it.
If you want to make a certain set of JAR files (or .class files) available to every Java application on the machine, then your best bet is to add those files to /Library/Java/Extensions
.
Or, if you want to do it for every Java application, but only when your Mac OS X account runs them, then use ~/Library/Java/Extensions
instead.
EDIT: If you want to do this only for a particular application, as Thorbjørn asked, then you will need to tell us more about how the application is packaged.
There are more api-friendly libraries than Net::HTTP
, for example httparty:
require "httparty"
File.open("/tmp/my_file.flv", "wb") do |f|
f.write HTTParty.get("http://somedomain.net/flv/sample/sample.flv").parsed_response
end
The cc and cxx is located inside /Applications/Xcode.app
. This should find the right paths
export CXX=`xcrun -find c++`
export CC=`xcrun -find cc`
sed -i '/^$/d' foo
This tells sed
to delete every line matching the regex ^$
i.e. every empty line. The -i
flag edits the file in-place, if your sed
doesn't support that you can write the output to a temporary file and replace the original:
sed '/^$/d' foo > foo.tmp
mv foo.tmp foo
If you also want to remove lines consisting only of whitespace (not just empty lines) then use:
sed -i '/^[[:space:]]*$/d' foo
Edit: also remove whitespace at the end of lines, because apparently you've decided you need that too:
sed -i '/^[[:space:]]*$/d;s/[[:space:]]*$//' foo
The accepted answer is most likely a red herring. The difference between Django 1.2.4 and 1.2.5 was the requirement for a CSRF token for AJAX requests.
I came across this problem on Django 1.3 and it was caused by the CSRF cookie not being set in the first place. Django will not set the cookie unless it has to. So an exclusively or heavily ajax site running on Django 1.2.4 would potentially never have sent a token to the client and then the upgrade requiring the token would cause the 403 errors.
The ideal fix is here:
http://docs.djangoproject.com/en/dev/ref/contrib/csrf/#page-uses-ajax-without-any-html-form
but you'd have to wait for 1.4 unless this is just documentation catching up with the code
Edit
Note also that the later Django docs note a bug in jQuery 1.5 so ensure you are using 1.5.1 or later with the Django suggested code: https://docs.djangoproject.com/en/dev/ref/csrf/#ajax
You can try using System.arraycopy()
int[] src = new int[]{1,2,3,4,5};
int[] dest = new int[5];
System.arraycopy( src, 0, dest, 0, src.length );
But, probably better to use clone() in most cases:
int[] src = ...
int[] dest = src.clone();
Here, in this post you will find the detailed code for establishing socket between devices or between two application in the same mobile.
You have to create two application to test below code.
In both application's manifest file, add below permission
<uses-permission android:name="android.permission.INTERNET" />
1st App code: Client Socket
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TableRow
android:id="@+id/tr_send_message"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:layout_marginTop="11dp">
<EditText
android:id="@+id/edt_send_message"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:layout_marginRight="10dp"
android:layout_marginLeft="10dp"
android:hint="Enter message"
android:inputType="text" />
<Button
android:id="@+id/btn_send"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="10dp"
android:text="Send" />
</TableRow>
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_below="@+id/tr_send_message"
android:layout_marginTop="25dp"
android:id="@+id/scrollView2">
<TextView
android:id="@+id/tv_reply_from_server"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" />
</ScrollView>
</RelativeLayout>
MainActivity.java
import android.os.Bundle;
import android.os.Handler;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.Socket;
/**
* Created by Girish Bhalerao on 5/4/2017.
*/
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
private TextView mTextViewReplyFromServer;
private EditText mEditTextSendMessage;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button buttonSend = (Button) findViewById(R.id.btn_send);
mEditTextSendMessage = (EditText) findViewById(R.id.edt_send_message);
mTextViewReplyFromServer = (TextView) findViewById(R.id.tv_reply_from_server);
buttonSend.setOnClickListener(this);
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btn_send:
sendMessage(mEditTextSendMessage.getText().toString());
break;
}
}
private void sendMessage(final String msg) {
final Handler handler = new Handler();
Thread thread = new Thread(new Runnable() {
@Override
public void run() {
try {
//Replace below IP with the IP of that device in which server socket open.
//If you change port then change the port number in the server side code also.
Socket s = new Socket("xxx.xxx.xxx.xxx", 9002);
OutputStream out = s.getOutputStream();
PrintWriter output = new PrintWriter(out);
output.println(msg);
output.flush();
BufferedReader input = new BufferedReader(new InputStreamReader(s.getInputStream()));
final String st = input.readLine();
handler.post(new Runnable() {
@Override
public void run() {
String s = mTextViewReplyFromServer.getText().toString();
if (st.trim().length() != 0)
mTextViewReplyFromServer.setText(s + "\nFrom Server : " + st);
}
});
output.close();
out.close();
s.close();
} catch (IOException e) {
e.printStackTrace();
}
}
});
thread.start();
}
}
2nd App Code - Server Socket
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:id="@+id/btn_stop_receiving"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="STOP Receiving data"
android:layout_alignParentTop="true"
android:enabled="false"
android:layout_centerHorizontal="true"
android:layout_marginTop="89dp" />
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="@+id/btn_stop_receiving"
android:layout_marginTop="35dp"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true">
<TextView
android:id="@+id/tv_data_from_client"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" />
</ScrollView>
<Button
android:id="@+id/btn_start_receiving"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="START Receiving data"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="14dp" />
</RelativeLayout>
MainActivity.java
import android.os.Bundle;
import android.os.Handler;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;
/**
* Created by Girish Bhalerao on 5/4/2017.
*/
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
final Handler handler = new Handler();
private Button buttonStartReceiving;
private Button buttonStopReceiving;
private TextView textViewDataFromClient;
private boolean end = false;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
buttonStartReceiving = (Button) findViewById(R.id.btn_start_receiving);
buttonStopReceiving = (Button) findViewById(R.id.btn_stop_receiving);
textViewDataFromClient = (TextView) findViewById(R.id.tv_data_from_client);
buttonStartReceiving.setOnClickListener(this);
buttonStopReceiving.setOnClickListener(this);
}
private void startServerSocket() {
Thread thread = new Thread(new Runnable() {
private String stringData = null;
@Override
public void run() {
try {
ServerSocket ss = new ServerSocket(9002);
while (!end) {
//Server is waiting for client here, if needed
Socket s = ss.accept();
BufferedReader input = new BufferedReader(new InputStreamReader(s.getInputStream()));
PrintWriter output = new PrintWriter(s.getOutputStream());
stringData = input.readLine();
output.println("FROM SERVER - " + stringData.toUpperCase());
output.flush();
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
updateUI(stringData);
if (stringData.equalsIgnoreCase("STOP")) {
end = true;
output.close();
s.close();
break;
}
output.close();
s.close();
}
ss.close();
} catch (IOException e) {
e.printStackTrace();
}
}
});
thread.start();
}
private void updateUI(final String stringData) {
handler.post(new Runnable() {
@Override
public void run() {
String s = textViewDataFromClient.getText().toString();
if (stringData.trim().length() != 0)
textViewDataFromClient.setText(s + "\n" + "From Client : " + stringData);
}
});
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btn_start_receiving:
startServerSocket();
buttonStartReceiving.setEnabled(false);
buttonStopReceiving.setEnabled(true);
break;
case R.id.btn_stop_receiving:
//stopping server socket logic you can add yourself
buttonStartReceiving.setEnabled(true);
buttonStopReceiving.setEnabled(false);
break;
}
}
}
Use the function Contains
from the strings package.
import (
"strings"
)
strings.Contains("something", "some") // true
Try looking at the return value of execute
, which is TRUE
on success, and FALSE
on failure.
Use:
docker rm -f $(docker ps -a -q)
It forcefully stops and removes all containers present locally.
With gitk
you can view the two branches graphically:
gitk branch1 branch2
And then it's easy to find the common ancestor in the history of the two branches.
I have placed here complete bins for above query. you can check demo link too.
Demo: http://codebins.com/bin/4ldqp78/2/How%20to%20make%20a%20simple%20modal%20pop
HTML
<div id="panel">
<input type="button" class="button" value="1" id="btn1">
<input type="button" class="button" value="2" id="btn2">
<input type="button" class="button" value="3" id="btn3">
<br>
<input type="text" id="valueFromMyModal">
<!-- Dialog Box-->
<div class="dialog" id="myform">
<form>
<label id="valueFromMyButton">
</label>
<input type="text" id="name">
<div align="center">
<input type="button" value="Ok" id="btnOK">
</div>
</form>
</div>
</div>
JQuery
$(function() {
$(".button").click(function() {
$("#myform #valueFromMyButton").text($(this).val().trim());
$("#myform input[type=text]").val('');
$("#myform").show(500);
});
$("#btnOK").click(function() {
$("#valueFromMyModal").val($("#myform input[type=text]").val().trim());
$("#myform").hide(400);
});
});
CSS
.button{
border:1px solid #333;
background:#6479fd;
}
.button:hover{
background:#a4a9fd;
}
.dialog{
border:5px solid #666;
padding:10px;
background:#3A3A3A;
position:absolute;
display:none;
}
.dialog label{
display:inline-block;
color:#cecece;
}
input[type=text]{
border:1px solid #333;
display:inline-block;
margin:5px;
}
#btnOK{
border:1px solid #000;
background:#ff9999;
margin:5px;
}
#btnOK:hover{
border:1px solid #000;
background:#ffacac;
}
Demo: http://codebins.com/bin/4ldqp78/2/How%20to%20make%20a%20simple%20modal%20pop
Maybe this?
throw std::runtime_error(
(std::ostringstream()
<< "Could not load config file '"
<< configfile
<< "'"
).str()
);
It creates a temporary ostringstream, calls the << operators as necessary and then you wrap that in round brackets and call the .str() function on the evaluated result (which is an ostringstream) to pass a temporary std::string to the constructor of runtime_error.
Note: the ostringstream and the string are r-value temporaries and so go out of scope after this line ends. Your exception object's constructor MUST take the input string using either copy or (better) move semantics.
Additional: I don't necessarily consider this approach "best practice", but it does work and can be used at a pinch. One of the biggest issues is that this method requires heap allocations and so the operator << can throw. You probably don't want that happening; however, if your get into that state your probably have way more issues to worry about!
You're looking for tooltip
For the basic tooltip, you want:
<div title="This is my tooltip">
For a fancier javascript version, you can look into:
http://www.designer-daily.com/jquery-prototype-mootool-tooltips-12632
The above link gives you 12 options for tooltips.
It's worth adding here as it is such a highly ranking question on zip. zip
is great, idiomatic Python - but it doesn't scale very well at all for large lists.
Instead of:
books = ['AAAAAAA', 'BAAAAAAA', ... , 'ZZZZZZZ']
words = [345, 567, ... , 672]
for book, word in zip(books, words):
print('{}: {}'.format(book, word))
Use izip
. For modern processing, it stores it in L1 Cache memory and is far more performant for larger lists. Use it as simply as adding an i
:
for book, word in izip(books, words):
print('{}: {}'.format(book, word))
An actual JSON request would look like this:
data: '{"command":"on"}',
Where you're sending an actual JSON string. For a more general solution, use JSON.stringify()
to serialize an object to JSON, like this:
data: JSON.stringify({ "command": "on" }),
To support older browsers that don't have the JSON
object, use json2.js which will add it in.
What's currently happening is since you have processData: false
, it's basically sending this: ({"command":"on"}).toString()
which is [object Object]
...what you see in your request.
To DELETE, without changing the references, you should first delete or otherwise alter (in a manner suitable for your purposes) all relevant rows in other tables.
To TRUNCATE you must remove the references. TRUNCATE is a DDL statement (comparable to CREATE and DROP) not a DML statement (like INSERT and DELETE) and doesn't cause triggers, whether explicit or those associated with references and other constraints, to be fired. Because of this, the database could be put into an inconsistent state if TRUNCATE was allowed on tables with references. This was a rule when TRUNCATE was an extension to the standard used by some systems, and is mandated by the the standard, now that it has been added.
I tried a bunch of these but none of them worked for all of my tests. So I found this:
^(?=.*\d)(?=.*[a-z])(?=.*[A-Z])(?=.*[^a-zA-Z0-9])(?!.*\s).{8,15}$
from this source: https://www.w3resource.com/javascript/form/password-validation.php
Did you restart the server after you changed the config file?
Can you telnet to the server from a different machine?
Can you telnet to the server from the server itself?
telnet <ip address> 80
telnet localhost 80
Just found this answer from another link,
npm uninstall @angular-devkit/build-angular
npm install @angular-devkit/[email protected]
You can call another constructor via the this(...)
keyword (when you need to call a constructor from the same class) or the super(...)
keyword
(when you need to call a constructor from a superclass).
However, such a call must be the first statement of your constructor. To overcome this limitation, use this answer.
By "camera position," it sounds like you want to adjust the elevation and the azimuth angle that you use to view the 3D plot. You can set this with ax.view_init
. I've used the below script to first create the plot, then I determined a good elevation, or elev
, from which to view my plot. I then adjusted the azimuth angle, or azim
, to vary the full 360deg around my plot, saving the figure at each instance (and noting which azimuth angle as I saved the plot). For a more complicated camera pan, you can adjust both the elevation and angle to achieve the desired effect.
from mpl_toolkits.mplot3d import Axes3D
ax = Axes3D(fig)
ax.scatter(xx,yy,zz, marker='o', s=20, c="goldenrod", alpha=0.6)
for ii in xrange(0,360,1):
ax.view_init(elev=10., azim=ii)
savefig("movie%d.png" % ii)
textcolor
function is no longer supported in the latest compilers.
This the simplest way to change text color in Code Blocks.
You can use system
function.
To change Text Color :
#include<stdio.h>
#include<stdlib.h> //as system function is in the standard library
int main()
{
system("color 1"); //here 1 represents the text color
printf("This is dummy program for text color");
return 0;
}
If you want to change both the text color & console color you just need to add another color code in system
function
To change Text Color & Console Color :
system("color 41"); //here 4 represents the console color and 1 represents the text color
N.B: Don't use spaces between color code like these
system("color 4 1");
Though if you do it Code Block will show all the color codes. You can use this tricks to know all supported color codes.
A simple JavaScript function will do the job.
function ClearFields() {
document.getElementById("textfield1").value = "";
document.getElementById("textfield2").value = "";
}
And just have your button call it:
<button type="button" onclick="ClearFields();">Clear</button>
Here is an image from notepad++ when you select text to copy as html.
and how the formatted text looks like after pasting it in OneNote (similar to any other app that supports "Paste Special"):
tr {
display: block;
margin-bottom: 5px;
}
$last = array_slice($array, -1, 1, true);
See http://php.net/array_slice for details on what the arguments mean.
P.S. Unlike the other answers, this one actually does what you want. :-)
Yes, a UITextView is what you're looking for. You'll have to deal with some things differently (like the return key) but you can add text to it, and it will allow you to scroll up and down if there's too much text inside.
This link has info about making a screen to enter data:
Use this function:
function is_checkbox(selector) {
var $result = $(selector);
return $result[0] && $result[0].type === 'checkbox';
};
Or this jquery plugin:
$.fn.is_checkbox = function () { return this.is(':checkbox'); };
You can change the labels' text by adorning the property with the DisplayName
attribute.
[DisplayName("Someking Status")]
public string SomekingStatus { get; set; }
Or, you could write the raw HTML explicitly:
<label for="SomekingStatus" class="control-label">Someking Status</label>
It's super fast and handles large text files, though minimal in features. There's a GUI version and console version (k.exe) included. Should work the same on linux.
Example: In my test it took 7 seconds to open a 500mb disk image.
Add c:\gygwin\bin
to PATH
environment variable either as a system environment variable or in your eclipse project (properties-> run/debug-> edit)
I'm not really too clear what you are asking, but using the -f
command line option just specifies a file - it doesn't tell make to change directories. If you want to do the work in another directory, you need to cd
to the directory:
clean:
cd gtest-1.4.0 && $(MAKE) clean
Note that each line in Makefile
runs in a separate shell, so there is no need to change the directory back.
There's no reason for the {} command not to work. The semi-obvious questions are:
You are sure that the product is actually installed! There's something in ARP/Programs&Features.
The original install is in fact visible in the current context. It looks as if it might have been a per-user install, and if you are logged in as somebody else now then it won't know about it - you'd need to log in under the same account as the original install.
If the \windows\installer directory was damaged the cached file would be missing, and that's used to do the uninstall.
Here an example:
final AtomicInteger counter = new AtomicInteger();
final int partitionSize=3;
final List<Object> list=new ArrayList<>();
list.add("A");
list.add("B");
list.add("C");
list.add("D");
list.add("E");
final Collection<List<Object>> subLists=list.stream().collect(Collectors.groupingBy
(it->counter.getAndIncrement() / partitionSize))
.values();
System.out.println(subLists);
Input: [A, B, C, D, E]
Output: [[A, B, C], [D, E]]
You can find examples here: https://e.printstacktrace.blog/divide-a-list-to-lists-of-n-size-in-Java-8/
The correct solution to the problem is to make sure SQL server authentication is turned on for your SQL Server.
@Override
protected Dialog onCreateDialog(int id)
{
switch(id)
{
case 0:
{
return new AlertDialog.Builder(this)
.setMessage("text here")
.setPositiveButton("OK", new DialogInterface.OnClickListener()
{
@Override
public void onClick(DialogInterface arg0, int arg1)
{
try
{
}//end try
catch(Exception e)
{
Toast.makeText(getBaseContext(), "", Toast.LENGTH_LONG).show();
}//end catch
}//end onClick()
}).create();
}//end case
}//end switch
return null;
}//end onCreateDialog
Normal divs should use margin-left: auto
and margin-right: auto
, but that doesn't work for fixed divs. The way around this is similar to Andrew's answer, but doesn't use the deprecated <center>
thing. Basically, just give the fixed div a wrapper.
#wrapper {_x000D_
width: 100%;_x000D_
position: fixed;_x000D_
background: gray;_x000D_
}_x000D_
#fixed_div {_x000D_
margin-left: auto;_x000D_
margin-right: auto;_x000D_
position: relative;_x000D_
width: 100px;_x000D_
height: 30px;_x000D_
text-align: center;_x000D_
background: lightgreen;_x000D_
}
_x000D_
<div id="wrapper">_x000D_
<div id="fixed_div"></div>_x000D_
</div
_x000D_
This will center a fixed div within a div while allowing the div to react with the browser. i.e. The div will be centered if there's enough space, but will collide with the edge of the browser if there isn't; similar to how a regular centered div reacts.
int value = 1;
string description = Enumerations.GetEnumDescription((MyEnum)value);
The default underlying data type for an enum
in C# is an int
, you can just cast it.
Here is a pure JavaScript solution I tested working in Firefox and Chrome but not in Internet Explorer:
function downloadDataUrlFromJavascript(filename, dataUrl) {
// Construct the 'a' element
var link = document.createElement("a");
link.download = filename;
link.target = "_blank";
// Construct the URI
link.href = dataUrl;
document.body.appendChild(link);
link.click();
// Cleanup the DOM
document.body.removeChild(link);
delete link;
}
Cross-browser solutions found up until now:
downloadify -> Requires Flash
databounce -> Tested in IE 10 and 11, and doesn't work for me. Requires a servlet and some customization. (Incorrectly detects navigator. I had to set IE in compatibility mode to test, default charset in servlet, JavaScript options object with correct servlet path for absolute paths...) For non-IE browsers, it opens the file in the same window.
download.js -> http://danml.com/download.html Another library similar but not tested. Claims to be pure JavaScript, not requiring servlet nor Flash, but doesn't work on IE <= 9.
If optimal performance is not a requirement and you just want something dead simple, you can define a basic function to test each character using the string class's built in "isspace" method:
def remove_space(input_string):
no_white_space = ''
for c in input_string:
if not c.isspace():
no_white_space += c
return no_white_space
Building the no_white_space
string this way will not have ideal performance, but the solution is easy to understand.
>>> remove_space('strip my spaces')
'stripmyspaces'
If you don't want to define a function, you can convert this into something vaguely similar with list comprehension. Borrowing from the top answer's join
solution:
>>> "".join([c for c in "strip my spaces" if not c.isspace()])
'stripmyspaces'
open the file named "jquery.fileupload-ui.js", you will see the code like this:
$.widget('blueimp.fileupload', $.blueimp.fileupload, {
options: {
// By default, files added to the widget are uploaded as soon
// as the user clicks on the start buttons. To enable automatic
// uploads, set the following option to true:
acceptFileTypes: /(\.|\/)(gif|jpe?g|png)$/i,
autoUpload: false,
// The ID of the upload template:
uploadTemplateId: 'template-upload',
// The ID of the download template:
downloadTemplateId: 'template-download',
????
just add one line code --- the new attribute "acceptFileTypes",like this:
options: {
// By default, files added to the widget are uploaded as soon
// as the user clicks on the start buttons. To enable automatic
// uploads, set the following option to true:
**acceptFileTypes: /(\.|\/)(gif|jpe?g|png)$/i,**
autoUpload: false,
// The ID of the upload template:
uploadTemplateId: 'template-upload',
// The ID of the download template:
downloadTemplateId: 'template-d
now you'll see everything is allright!~ you just take the attribute with a wrong place.
As easy as to import Image and requests
from PIL import Image
import requests
img = Image.open(requests.get(url, stream = True).raw)
img.save('img1.jpg')
You can find a good explanation of why it was replaced by reading A name for the null pointer: nullptr, to quote the paper:
This problem falls into the following categories:
Improve support for library building, by providing a way for users to write less ambiguous code, so that over time library writers will not need to worry about overloading on integral and pointer types.
Improve support for generic programming, by making it easier to express both integer 0 and nullptr unambiguously.
Make C++ easier to teach and learn.
In my case, I don't have control over server setting, but I know it's expecting "application/json" for "Content-Type". I did this on the iOS client side:
manager.requestSerializer = [AFJSONRequestSerializer serializer];
I have faced with the same issue. The resolve: - Window-->Preferences-->Java-->Installed JREs-->Add... - Right click on your project-->Build Path-->Configure Build Path-->Add library-->JRE system library-->next-->WorkSpace Default JRE
Try this:
char c = 'a'; // or whatever your character is
printf("%c %d", c, c);
The %c is the format string for a single character, and %d for a digit/integer. By casting the char to an integer, you'll get the ascii value.
Since Ant 1.8.0 there's apparently also resourceexists
From http://ant.apache.org/manual/Tasks/conditions.html
Tests a resource for existance. since Ant 1.8.0
The actual resource to test is specified as a nested element.
An example:
<resourceexists> <file file="${file}"/> </resourceexists>
I was about rework the example from the above good answer to this question, and then I found this
As of Ant 1.8.0, you may instead use property expansion; a value of true (or on or yes) will enable the item, while false (or off or no) will disable it. Other values are still assumed to be property names and so the item is enabled only if the named property is defined.
Compared to the older style, this gives you additional flexibility, because you can override the condition from the command line or parent scripts:
<target name="-check-use-file" unless="file.exists"> <available property="file.exists" file="some-file"/> </target> <target name="use-file" depends="-check-use-file" if="${file.exists}"> <!-- do something requiring that file... --> </target> <target name="lots-of-stuff" depends="use-file,other-unconditional-stuff"/>
from the ant manual at http://ant.apache.org/manual/properties.html#if+unless
Hopefully this example is of use to some. They're not using resourceexists, but presumably you could?.....
Is that your actual code? A javascript object (which is what you've given us) does not have a length property, so in this case exampleArray.length
returns undefined rather than 5.
This stackoverflow explains the length differences between an object and an array, and this stackoverflow shows how to get the 'size' of an object.
The syntax of the class creation statement:
class <ClassName>(superclass):
#code follows
In the absence of any other superclasses that you specifically want to inherit from, the superclass
should always be object
, which is the root of all classes in Python.
object
is technically the root of "new-style" classes in Python. But the new-style classes today are as good as being the only style of classes.
But, if you don't explicitly use the word object
when creating classes, then as others mentioned, Python 3.x implicitly inherits from the object
superclass. But I guess explicit is always better than implicit (hell)
This is a nice video on youtube which demonstrates how these interfaces differ , worth a watch.
Below goes a long descriptive answer for it.
The first important point to remember is IQueryable
interface inherits from IEnumerable
, so whatever IEnumerable
can do, IQueryable
can also do.
There are many differences but let us discuss about the one big difference which makes the biggest difference. IEnumerable
interface is useful when your collection is loaded using LINQ
or Entity framework and you want to apply filter on the collection.
Consider the below simple code which uses IEnumerable
with entity framework. It’s using a Where
filter to get records whose EmpId
is 2
.
EmpEntities ent = new EmpEntities();
IEnumerable<Employee> emp = ent.Employees;
IEnumerable<Employee> temp = emp.Where(x => x.Empid == 2).ToList<Employee>();
This where filter is executed on the client side where the IEnumerable
code is. In other words all the data is fetched from the database and then at the client its scans and gets the record with EmpId
is 2
.
But now see the below code we have changed IEnumerable
to IQueryable
. It creates a SQL Query at the server side and only necessary data is sent to the client side.
EmpEntities ent = new EmpEntities();
IQueryable<Employee> emp = ent.Employees;
IQueryable<Employee> temp = emp.Where(x => x.Empid == 2).ToList<Employee>();
So the difference between IQueryable
and IEnumerable
is about where the filter logic is executed. One executes on the client side and the other executes on the database.
So if you working with only in-memory data collection IEnumerable
is a good choice but if you want to query data collection which is connected with database `IQueryable is a better choice as it reduces network traffic and uses the power of SQL language.
Simple approach..See it via recursion..
<?php
function flatten_array($simple){
static $outputs=array();
foreach ( $simple as $value)
{
if(is_array($value)){
flatten_array($value);
}
else{
$outputs[]=$value;
}
}
return $outputs;
}
$eg=['s'=>['p','n'=>['t']]];
$out=flatten_array($eg);
print_r($out);
?>
Updated version of answer by Daniel Krom above:
extension UIView {
func bindToKeyboard() {
NotificationCenter.default.addObserver(
self,
selector: #selector(UIView.keyboardWillChange(notification:)),
name: UIResponder.keyboardWillChangeFrameNotification,
object: nil
)
}
func unbindToKeyboard() {
NotificationCenter.default.removeObserver(
self,
name: UIResponder.keyboardWillChangeFrameNotification,
object: nil
)
}
@objc func keyboardWillChange(notification: Notification) {
let duration = notification.userInfo![UIResponder.keyboardAnimationDurationUserInfoKey] as! Double
let curve = notification.userInfo![UIResponder.keyboardAnimationCurveUserInfoKey] as! UInt
let curFrame = (notification.userInfo![UIResponder.keyboardFrameBeginUserInfoKey] as! NSValue).cgRectValue
let targetFrame = (notification.userInfo![UIResponder.keyboardFrameEndUserInfoKey] as! NSValue).cgRectValue
let deltaY = targetFrame.origin.y - curFrame.origin.y
UIView.animateKeyframes(withDuration: duration, delay: 0.0, options: UIView.KeyframeAnimationOptions(rawValue: curve), animations: {
self.frame.origin.y += deltaY
})
}
}
Dashes (-
) have no significance other than making the number more readable, so you might as well include them.
Since we never know where our website visitors are coming from, we need to make phone numbers callable from anywhere in the world. For this reason the +
sign is always necessary. The +
sign is automatically converted by your mobile carrier to your international dialing prefix, also known as "exit code". This code varies by region, country, and sometimes a single country can use multiple codes, depending on the carrier. Fortunately, when it is a local call, dialing it with the international format will still work.
Using your example number, when calling from China, people would need to dial:
00-1-555-555-1212
And from Russia, they would dial
810-1-555-555-1212
The +
sign solves this issue by allowing you to omit the international dialing prefix.
After the international dialing prefix comes the country code(pdf), followed by the geographic code (area code), finally the local phone number.
Therefore either of the last two of your examples would work, but my recommendation is to use this format for readability:
<a href="tel:+1-555-555-1212">+1-555-555-1212</a>
Note: For numbers that contain a trunk prefix different from the country code (e.g. if you write it locally with brackets around a 0
), you need to omit it because the number must be in international format.
You can also stringify the object and then again parse to make the normal object. For example like:-
const obj = JSON.parse(JSON.stringify(mongoObj))
String mQuery = "SELECT Name,Family From tblName";
Cursor mCur = db.rawQuery(mQuery, new String[]{});
mCur.moveToFirst();
while ( !mCur.isAfterLast()) {
String name= mCur.getString(mCur.getColumnIndex("Name"));
String family= mCur.getString(mCur.getColumnIndex("Family"));
mCur.moveToNext();
}
Name and family are your result
Something throws an exception of type std::bad_alloc
, indicating that you ran out of memory. This exception is propagated through until main
, where it "falls off" your program and causes the error message you see.
Since nobody here knows what "RectInvoice", "rectInvoiceVector", "vect", "im" and so on are, we cannot tell you what exactly causes the out-of-memory condition. You didn't even post your real code, because w h
looks like a syntax error.
here is another simple way for do n-grams
>>> from nltk.util import ngrams
>>> text = "I am aware that nltk only offers bigrams and trigrams, but is there a way to split my text in four-grams, five-grams or even hundred-grams"
>>> tokenize = nltk.word_tokenize(text)
>>> tokenize
['I', 'am', 'aware', 'that', 'nltk', 'only', 'offers', 'bigrams', 'and', 'trigrams', ',', 'but', 'is', 'there', 'a', 'way', 'to', 'split', 'my', 'text', 'in', 'four-grams', ',', 'five-grams', 'or', 'even', 'hundred-grams']
>>> bigrams = ngrams(tokenize,2)
>>> bigrams
[('I', 'am'), ('am', 'aware'), ('aware', 'that'), ('that', 'nltk'), ('nltk', 'only'), ('only', 'offers'), ('offers', 'bigrams'), ('bigrams', 'and'), ('and', 'trigrams'), ('trigrams', ','), (',', 'but'), ('but', 'is'), ('is', 'there'), ('there', 'a'), ('a', 'way'), ('way', 'to'), ('to', 'split'), ('split', 'my'), ('my', 'text'), ('text', 'in'), ('in', 'four-grams'), ('four-grams', ','), (',', 'five-grams'), ('five-grams', 'or'), ('or', 'even'), ('even', 'hundred-grams')]
>>> trigrams=ngrams(tokenize,3)
>>> trigrams
[('I', 'am', 'aware'), ('am', 'aware', 'that'), ('aware', 'that', 'nltk'), ('that', 'nltk', 'only'), ('nltk', 'only', 'offers'), ('only', 'offers', 'bigrams'), ('offers', 'bigrams', 'and'), ('bigrams', 'and', 'trigrams'), ('and', 'trigrams', ','), ('trigrams', ',', 'but'), (',', 'but', 'is'), ('but', 'is', 'there'), ('is', 'there', 'a'), ('there', 'a', 'way'), ('a', 'way', 'to'), ('way', 'to', 'split'), ('to', 'split', 'my'), ('split', 'my', 'text'), ('my', 'text', 'in'), ('text', 'in', 'four-grams'), ('in', 'four-grams', ','), ('four-grams', ',', 'five-grams'), (',', 'five-grams', 'or'), ('five-grams', 'or', 'even'), ('or', 'even', 'hundred-grams')]
>>> fourgrams=ngrams(tokenize,4)
>>> fourgrams
[('I', 'am', 'aware', 'that'), ('am', 'aware', 'that', 'nltk'), ('aware', 'that', 'nltk', 'only'), ('that', 'nltk', 'only', 'offers'), ('nltk', 'only', 'offers', 'bigrams'), ('only', 'offers', 'bigrams', 'and'), ('offers', 'bigrams', 'and', 'trigrams'), ('bigrams', 'and', 'trigrams', ','), ('and', 'trigrams', ',', 'but'), ('trigrams', ',', 'but', 'is'), (',', 'but', 'is', 'there'), ('but', 'is', 'there', 'a'), ('is', 'there', 'a', 'way'), ('there', 'a', 'way', 'to'), ('a', 'way', 'to', 'split'), ('way', 'to', 'split', 'my'), ('to', 'split', 'my', 'text'), ('split', 'my', 'text', 'in'), ('my', 'text', 'in', 'four-grams'), ('text', 'in', 'four-grams', ','), ('in', 'four-grams', ',', 'five-grams'), ('four-grams', ',', 'five-grams', 'or'), (',', 'five-grams', 'or', 'even'), ('five-grams', 'or', 'even', 'hundred-grams')]
Use keyup
instead of keypress
. This gets all the key codes when the user presses something
Because &
has a lesser priority than ==
.
Your code is equivalent to a[0] & (1 == 0)
, and unless a[0]
is a boolean this won't compile...
You need to:
(a[0] & 1) == 0
etc etc.
(yes, Java does hava a boolean &
operator -- a non shortcut logical and)
Move import sys
outside of the try
-except
block:
import sys
try:
# ...
except ImportError:
# ...
If any of the imports before the import sys
line fails, the rest of the block is not executed, and sys
is never imported. Instead, execution jumps to the exception handling block, where you then try to access a non-existing name.
sys
is a built-in module anyway, it is always present as it holds the data structures to track imports; if importing sys
fails, you have bigger problems on your hand (as that would indicate that all module importing is broken).
Same package error:
This can also be a issue when you enter wrong password for your sign key.
As others have said, it is valid.
There are some downsides to each approach though:
href="#"
adds an extra entry to the browser history (which is annoying when e.g. back-buttoning).
href=""
reloads the page
href="javascript:;"
does not seem to have any problems (other than looking messy and meaningless) - anyone know of any?
Linux Ubuntu 18:04 user here. I tried all the solutions on this board to date. Even though I read above in the accepted answer that "From later versions, there is no need to manually install gulp-util.", it was the thing that worked for me. (...maybe bc I'm on Ubuntu? I don't know. )
To recap, I kept getting the "cannot find module 'gulp-util'" error when just checking to see if gulp was installed by running:
gulp --version
...again, the 'gulp-util' error kept appearing...
So, I followed the npm install [package name] advice listed above, but ended up getting several other packages that needed to be installed as well. And one had a issue of already existing, and i wasn't sure how to replace it. ...I will put all the packages/install commands that I had to use here, just as reference in case someone else experiences this problem:
sudo npm install -g gulp-util
(then I got an error for 'pretty-hrtime' so I added that, and then the others as Error: Cannot find module ___ kept popping up after each gulp --version check. ...so I just kept installing each one.)
sudo npm install -g pretty-hrtime
sudo npm install -g chalk
sudo npm install -g semver --force
(without --force, on my system I got an error: "EEXIST: file already exists, symlink". --force is not recommended, but idk any other way. )
sudo npm install -g archy
sudo npm install -g liftoff
sudo npm install -g tildify
sudo npm install -g interpret
sudo npm install -g v8flags
sudo npm install -g minimist
And now gulp --version is finally showing: CLI version 3.9.1 Local version 3.9.1
-qscale:v
to control qualityUse -qscale:v
(or the alias -q:v
) as an output option.
-qmin 1
output option (because the default is -qmin 2
).ffmpeg -i input.mp4 -qscale:v 2 output_%03d.jpg
See the image muxer documentation for more options involving image outputs.
ffmpeg -ss 60 -i input.mp4 -qscale:v 4 -frames:v 1 output.jpg
this on uses the twitter-bootstrap
styles to turn select
in dropdown
menu
https://github.com/silviomoreto/bootstrap-select
I was dealing with this issue after upgrading from Visual Studio 2013
to Visual Studio 2015
After trying most of the advice found in this and other similar SO posts, I finally found the problem. The first part of the fix was to update all of my NuGet
stuff to the latest version (you might need to do this in VS13
if you are experiencing the Nuget
bug) after, I had to, as you may need to, fix the versions listed in the Views Web.config
. This includes:
MVC
versions and its child libraries to the new version (expand the References
then right click onSytem.Web.MVC
then Properties
to get your version) Razor
version. Mine looked like this:
<configuration>
<configSections>
<sectionGroup name="system.web.webPages.razor" type="System.Web.WebPages.Razor.Configuration.RazorWebSectionGroup, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
<section name="host" type="System.Web.WebPages.Razor.Configuration.HostSection, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" />
<section name="pages" type="System.Web.WebPages.Razor.Configuration.RazorPagesSection, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" />
</sectionGroup>
</configSections>
<system.web.webPages.razor>
<host factoryType="System.Web.Mvc.MvcWebRazorHostFactory, System.Web.Mvc, Version=5.2.3.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
<pages pageBaseType="System.Web.Mvc.WebViewPage">
<namespaces>
<add namespace="System.Web.Mvc" />
<add namespace="System.Web.Mvc.Ajax" />
<add namespace="System.Web.Mvc.Html" />
<add namespace="System.Web.Optimization"/>
<add namespace="System.Web.Routing" />
</namespaces>
</pages>
</system.web.webPages.razor>
<appSettings>
<add key="webpages:Enabled" value="false" />
</appSettings>
<system.web>
<httpHandlers>
<add path="*" verb="*" type="System.Web.HttpNotFoundHandler"/>
</httpHandlers>
<pages
validateRequest="false"
pageParserFilterType="System.Web.Mvc.ViewTypeParserFilter, System.Web.Mvc, Version=5.2.3.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"
pageBaseType="System.Web.Mvc.ViewPage, System.Web.Mvc, Version=5.2.3.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"
userControlBaseType="System.Web.Mvc.ViewUserControl, System.Web.Mvc, Version=5.2.3.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
<controls>
<add assembly="System.Web.Mvc, Version=5.2.3.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" namespace="System.Web.Mvc" tagPrefix="mvc" />
</controls>
</pages>
</system.web>
<system.webServer>
<validation validateIntegratedModeConfiguration="false" />
<handlers>
<remove name="BlockViewHandler"/>
<add name="BlockViewHandler" path="*" verb="*" preCondition="integratedMode" type="System.Web.HttpNotFoundHandler" />
</handlers>
</system.webServer>
</configuration>
I know there are already many answers to it but after reading all these I believe there is still room for explanation.
React
React = Vaila JS + ES6 + HTML + CSS = JSX = Web Apps(Front end)
So let's talk about react first because react-native also based on react and the same concept of JS is been used there.
React is a JS library which is used to make beautiful, flexible, performant single page web applications, So now a question will appear in your mind what is single page web app.
Single-Page Application
A single-page application is an app that works inside a browser and does not require page reloading during use. You are using this type of applications every day. These are, for instance: Gmail, Google Maps, Facebook, or GitHub. SPAs are all about serving an outstanding UX by trying to imitate a “natural” environment in the browser — no page reloads, no extra wait time. It is just one web page that you visit which then loads all other content using JavaScript — which they heavily depend on. SPA requests the markup and data independently and renders pages straight in the browser. We can do this thanks to advanced JavaScript frameworks like AngularJS, Ember.js, Meteor.js, Knockout.js, React.js, Vue.js. Single-page sites help keep the user in one, comfortable web space where content is presented to the user in a simple, easy, and workable fashion.
How it works
Now you know what is SPA, So as you know it's a web app so it will use HTML elements for running into the browser and also used JS for handling all the functionality related to these elements. It used Virtual Dom to render new changes in the components.
React-Native
Now you have a bit of an idea about react so let's talk about react-native
React-Native = React (Vaila JS + ES6 + Bridge between JS and Native code) + Native(IOS, Android) = Mobile Apps(Android, IOS, also supported web but have some limitations)
React-Native used to make beautiful cross-platform mobile apps(Android, IOS) using React.
How it works
In React-Native there are two threads.
JS Thread
Native Thread
All of the react code executed inside JS thread and the final value passes to the native thread which draws layout on the screen with the final value.
JS thread performs all of the calculations and passes data to native, How?
React uses an Async Bridge to pass data to Native thread in JSON format is called react-native
So we use Native components for making a presentational view in react-native and use that bridge to communicate between these two different worlds.
JS thread is fast enough to execute javascript and the native thread is also fast enough to execute native code but as react used async bridge to communicate between these two worlds, overloading this bridge causes performance issues.
Let's talk about the common and differences between these two frameworks.
|---------------------|------------------|---------------------|
| Feature | React | React-Native |
|---------------------|------------------|---------------------|
| Platform | Web | Android, IOS, JS |
|---------------------|------------------|---------------------|
| Open Source | Yes | Yes |
|---------------------|------------------|---------------------|
| Presentational View | HTML + CSS | Native Components |
|---------------------|------------------|---------------------|
| Arichtecure | Virtual Dom | Virtual Dom + Bridge|
|---------------------|------------------|---------------------|
| Animations | CSS Animations | Native Animations |
|---------------------|------------------|---------------------|
| Styling | CSS | JS Stylesheets |
|---------------------|------------------|---------------------|
| Developed By | Facebook | Facebook |
|---------------------|------------------|---------------------|
Fortunately, jQuery selectors allow you much more freedom:
$("div a").click( function(event)
{
var clicked = $(this); // jQuery wrapper for clicked element
// ... click-specific code goes here ...
});
...will attach the specified callback to each <a>
contained in a <div>
.
When learning a new concept I don't like using libraries or code dumps. I found a good description here and in the documentation of how to resize an image by pinching. This answer is a slightly modified summary. You will probably want to add more functionality later, but it will help you get started.
The ImageView
just uses the app logo since it is already available. You can replace it with any image you like, though.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="@+id/imageView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="@mipmap/ic_launcher"
android:layout_centerInParent="true"/>
</RelativeLayout>
We use a ScaleGestureDetector
on the activity to listen to touch events. When a scale (ie, pinch) gesture is detected, then the scale factor is used to resize the ImageView
.
public class MainActivity extends AppCompatActivity {
private ScaleGestureDetector mScaleGestureDetector;
private float mScaleFactor = 1.0f;
private ImageView mImageView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// initialize the view and the gesture detector
mImageView = findViewById(R.id.imageView);
mScaleGestureDetector = new ScaleGestureDetector(this, new ScaleListener());
}
// this redirects all touch events in the activity to the gesture detector
@Override
public boolean onTouchEvent(MotionEvent event) {
return mScaleGestureDetector.onTouchEvent(event);
}
private class ScaleListener extends ScaleGestureDetector.SimpleOnScaleGestureListener {
// when a scale gesture is detected, use it to resize the image
@Override
public boolean onScale(ScaleGestureDetector scaleGestureDetector){
mScaleFactor *= scaleGestureDetector.getScaleFactor();
mImageView.setScaleX(mScaleFactor);
mImageView.setScaleY(mScaleFactor);
return true;
}
}
}
You can limit the size of the scaling with something like
mScaleFactor = Math.max(0.1f, Math.min(mScaleFactor, 5.0f));
Thanks again to Pinch-to-zoom with multi-touch gestures In Android
You will probably want to do other things like panning and scaling to some focus point. You can develop these things yourself, but if you would like to use a pre-made custom view, copy TouchImageView.java
into your project and use it like a normal ImageView
. It worked well for me and I only ran into one bug. I plan to further edit the code to remove the warning and the parts that I don't need. You can do the same.
There are lots of data types you can mention while creating model, some examples are:
:primary_key, :string, :text, :integer, :float, :decimal, :datetime, :timestamp, :time, :date, :binary, :boolean, :references
syntax:
field_type:data_type
<role rolename="tomcat"/>
<role rolename="manager-gui"/>
<role rolename="admin-gui"/>
<role rolename="manager-script"/>
<role rolename="manager-jmx"/>
<user username="admin" password="admin" roles="tomcat,manager-gui,admin-gui,manager-script,manager-jmx"/>
Close all the session, once closed, ensure open the URL in incognito mode login again and it should start working
The problem is most probably between a . and a _. Say in my query I put
SELECT ..... FROM LOCATION.PT
instead of
SELECT ..... FROM LOCATION_PT
So I think MySQL would think LOCATION as a database name and was giving access privilege error.