You only need to delete one folder it is throwing error for. Just go to your M2 repo and org/apache/maven/plugins/maven-compiler-plugins and delete the folder 2.3.2
I think the "meaning" of void* in this case is a generic handle. It is not a pointer to a value, it is the value itself. (This just happens to be how void* is used by C and C++ programmers.)
If it is holding an integer value, it had better be within integer range!
Here is easy rendering to integer:
int x = (char*)p - (char*)0;
It should only give a warning.
I had a slightly different problem. Instead of incrementing a local variable in the forEach, I needed to assign an object to the local variable.
I solved this by defining a private inner domain class that wraps both the list I want to iterate over (countryList) and the output I hope to get from that list (foundCountry). Then using Java 8 "forEach", I iterate over the list field, and when the object I want is found, I assign that object to the output field. So this assigns a value to a field of the local variable, not changing the local variable itself. I believe that since the local variable itself is not changed, the compiler doesn't complain. I can then use the value that I captured in the output field, outside of the list.
Domain Object:
public class Country {
private int id;
private String countryName;
public Country(int id, String countryName){
this.id = id;
this.countryName = countryName;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getCountryName() {
return countryName;
}
public void setCountryName(String countryName) {
this.countryName = countryName;
}
}
Wrapper object:
private class CountryFound{
private final List<Country> countryList;
private Country foundCountry;
public CountryFound(List<Country> countryList, Country foundCountry){
this.countryList = countryList;
this.foundCountry = foundCountry;
}
public List<Country> getCountryList() {
return countryList;
}
public void setCountryList(List<Country> countryList) {
this.countryList = countryList;
}
public Country getFoundCountry() {
return foundCountry;
}
public void setFoundCountry(Country foundCountry) {
this.foundCountry = foundCountry;
}
}
Iterate operation:
int id = 5;
CountryFound countryFound = new CountryFound(countryList, null);
countryFound.getCountryList().forEach(c -> {
if(c.getId() == id){
countryFound.setFoundCountry(c);
}
});
System.out.println("Country found: " + countryFound.getFoundCountry().getCountryName());
You could remove the wrapper class method "setCountryList()" and make the field "countryList" final, but I did not get compilation errors leaving these details as-is.
temp[::-1].sort()
sorts the array in place, whereas np.sort(temp)[::-1]
creates a new array.
In [25]: temp = np.random.randint(1,10, 10)
In [26]: temp
Out[26]: array([5, 2, 7, 4, 4, 2, 8, 6, 4, 4])
In [27]: id(temp)
Out[27]: 139962713524944
In [28]: temp[::-1].sort()
In [29]: temp
Out[29]: array([8, 7, 6, 5, 4, 4, 4, 4, 2, 2])
In [30]: id(temp)
Out[30]: 139962713524944
another solution is catching onClick event and for aggregate data to js function you can
.hmtl.erb
<%= link_to "Action", 'javascript:;', class: 'my-class', data: { 'array' => %w(foo bar) } %>
.js
// handle my-class click
$('a.my-class').on('click', function () {
var link = $(this);
var array = link.data('array');
});
Had the same issue and was getting the same error. When i ran xcode-select -p
, it gave output as /Library/Developer/CommandLineTools
. So that means xcode was already installed in my system. Then i ran steps as given on this answer. After which any command which required xcode ran successfully.
take a look at shutil
. shutil.copyfile(src, dst)
will copy a file to another file.
Note that shutil.copyfile
will not create directories that do not already exist. for that, use os.makedirs
As of Swift 1.1, you can directly pass String
to const char *
parameter.
import Foundation
let str = "123.4567"
let num = atof(str) // -> 123.4567
atof("123.4567fubar") // -> 123.4567
If you don't like deprecated atof
:
strtod("765.4321", nil) // -> 765.4321
One caveat: the behavior of conversion is different from NSString.doubleValue
.
atof
and strtod
accept 0x
prefixed hex string:
atof("0xffp-2") // -> 63.75
atof("12.3456e+2") // -> 1,234.56
atof("nan") // -> (not a number)
atof("inf") // -> (+infinity)
If you prefer .doubleValue
behavior, we can still use CFString
bridging:
let str = "0xff"
atof(str) // -> 255.0
strtod(str, nil) // -> 255.0
CFStringGetDoubleValue(str) // -> 0.0
(str as NSString).doubleValue // -> 0.0
There are a number of limitations, notably:
http://www.dotnetspider.com/tutorials/SqlServer-Tutorial-158.aspx http://www.microsoft.com/sqlserver/2008/en/us/editions.aspx
With regards to the number of databases, this MSDN article says there's no limit:
The 4 GB database size limit applies only to data files and not to log files. However, there are no limits to the number of databases that can be attached to the server.
However, as mentioned in the comments and above, the database size limit was raised to 10GB in 2008 R2 and 2012. Also, this 10GB limit only applies to relational data, and Filestream data does not count towards this limit (http://msdn.microsoft.com/en-us/library/bb895334.aspx).
If you have the element in scroll view then you can also solve this issue as :
<com.google.android.material.textfield.TextInputEditText
android:id="@+id/ed_password"
android:inputType="textPassword"
android:focusable="true"
android:imeOptions="actionNext"
android:nextFocusDown="@id/ed_confirmPassword" />
and in your activity:
edPassword.setOnEditorActionListener(new EditText.OnEditorActionListener() {
@Override
public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
if (actionId == EditorInfo.IME_ACTION_NEXT) {
focusOnView(scroll,edConfirmPassword);
return true;
}
return false;
}
});
public void focusOnView(ScrollView scrollView, EditText viewToScrollTo){
scrollView.post(new Runnable() {
@Override
public void run() {
scrollView.smoothScrollTo(0, viewToScrollTo.getBottom());
viewToScrollTo.requestFocus();
}
});
}
There is no default value to control deleting old log files created by DailyRollingFileAppender. But you can write your own custom Appender that deletes old log files in much the same way as setting maxBackupIndex does for RollingFileAppender.
Simple instructions found here
From 1:
If you are trying to use the Apache Log4J DailyRollingFileAppender for a daily log file, you may need to want to specify the maximum number of files which should be kept. Just like rolling RollingFileAppender supports maxBackupIndex. But the current version of Log4j (Apache log4j 1.2.16) does not provide any mechanism to delete old log files if you are using DailyRollingFileAppender. I tried to make small modifications in the original version of DailyRollingFileAppender to add maxBackupIndex property. So, it would be possible to clean up old log files which may not be required for future usage.
Enable:
adb shell su -c 'svc wifi enable'
Disable:
adb shell su -c 'svc wifi disable'
adb shell am start -a android.intent.action.MAIN -n com.android.settings/.wifi.WifiSettings
adb shell input keyevent 20 & adb shell input keyevent 23
The first line launch "wifi.WifiSettings" activity which open the WiFi Settings page. The second line simulate key presses.
I tested those two lines on a Droid X. But Key Events above probably need to edit in other devices because of different Settings layout.
More info about "keyevents" here.
To check online you can use
http://codebeautify.org/base64-to-image-converter
You can convert string to image like this way
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Base64;
import android.widget.ImageView;
import java.io.ByteArrayOutputStream;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ImageView image =(ImageView)findViewById(R.id.image);
//encode image to base64 string
ByteArrayOutputStream baos = new ByteArrayOutputStream();
Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.logo);
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos);
byte[] imageBytes = baos.toByteArray();
String imageString = Base64.encodeToString(imageBytes, Base64.DEFAULT);
//decode base64 string to image
imageBytes = Base64.decode(imageString, Base64.DEFAULT);
Bitmap decodedImage = BitmapFactory.decodeByteArray(imageBytes, 0, imageBytes.length);
image.setImageBitmap(decodedImage);
}
}
Use [^\p{L}\p{Nd}]+
- this matches all (Unicode) characters that are neither letters nor (decimal) digits.
In Java:
String resultString = subjectString.replaceAll("[^\\p{L}\\p{Nd}]+", "");
Edit:
I changed \p{N}
to \p{Nd}
because the former also matches some number symbols like ¼
; the latter doesn't. See it on regex101.com.
In PHP:
$data = "<html>....";
exit(json_encode($data));
Then you should use AJAX to retrieve the data and do what you want with it. I suggest using JQuery: http://api.jquery.com/jQuery.getJSON/
Don't do this; integers in C/C++ are always rounded down so there is no need to use the floor function.
char str[100];
int d1 = value;
Better to use
int d1 = (int)(floor(value));
Then you won't get rounding up of the integer part (68.9999999999999999 becomes 69.00..). 68.09999847 instead of 68.1 is difficult to avoid - any floating point format has limited precision.
boolean containsWhitespace = false;
for (int i = 0; i < text.length() && !containsWhitespace; i++) {
if (Character.isWhitespace(text.charAt(i)) {
containsWhitespace = true;
}
}
return containsWhitespace;
or, using Guava,
boolean containsWhitespace = CharMatcher.WHITESPACE.matchesAnyOf(text);
For this example you will need to create your own type, that would be an array. Then you create a bigger array which elements are of type you have just created.
To run my example you will need to fill columns A and B in Sheet1 with some values. Then run test(). It will read first two rows and add the values to the BigArr. Then it will check how many rows of data you have and read them all, from the place it has stopped reading, i.e., 3rd row.
Tested in Excel 2007.
Option Explicit
Private Type SmallArr
Elt() As Variant
End Type
Sub test()
Dim x As Long, max_row As Long, y As Long
'' Define big array as an array of small arrays
Dim BigArr() As SmallArr
y = 2
ReDim Preserve BigArr(0 To y)
For x = 0 To y
ReDim Preserve BigArr(x).Elt(0 To 1)
'' Take some test values
BigArr(x).Elt(0) = Cells(x + 1, 1).Value
BigArr(x).Elt(1) = Cells(x + 1, 2).Value
Next x
'' Write what has been read
Debug.Print "BigArr size = " & UBound(BigArr) + 1
For x = 0 To UBound(BigArr)
Debug.Print BigArr(x).Elt(0) & " | " & BigArr(x).Elt(1)
Next x
'' Get the number of the last not empty row
max_row = Range("A" & Rows.Count).End(xlUp).Row
'' Change the size of the big array
ReDim Preserve BigArr(0 To max_row)
Debug.Print "new size of BigArr with old data = " & UBound(BigArr)
'' Check haven't we lost any data
For x = 0 To y
Debug.Print BigArr(x).Elt(0) & " | " & BigArr(x).Elt(1)
Next x
For x = y To max_row
'' We have to change the size of each Elt,
'' because there are some new for,
'' which the size has not been set, yet.
ReDim Preserve BigArr(x).Elt(0 To 1)
'' Take some test values
BigArr(x).Elt(0) = Cells(x + 1, 1).Value
BigArr(x).Elt(1) = Cells(x + 1, 2).Value
Next x
'' Check what we have read
Debug.Print "BigArr size = " & UBound(BigArr) + 1
For x = 0 To UBound(BigArr)
Debug.Print BigArr(x).Elt(0) & " | " & BigArr(x).Elt(1)
Next x
End Sub
You can even add the size of the terms (indexed terms). Have a look at Elastic Search: how to see the indexed data
There seems no way to have google maps api key free without credit card. To test the functionality of google map you can use it while leaving the api key field "EMPTY". It will show a message saying "For Development Purpose Only". And that way you can test google map functionality without putting billing information for google map api key.
<script src="https://maps.googleapis.com/maps/api/js?key=&callback=initMap" async defer></script>
The session.save(object) returns the id of the object, or you could alternatively call the id getter method after performing a save.
Save() return value:
Serializable save(Object object) throws HibernateException
Returns:
the generated identifier
Getter method example:
UserDetails entity:
@Entity
public class UserDetails {
@Id
@GeneratedValue
private int id;
private String name;
// Constructor, Setters & Getters
}
Logic to test the id's :
Session session = HibernateUtil.getSessionFactory().getCurrentSession();
session.getTransaction().begin();
UserDetails user1 = new UserDetails("user1");
UserDetails user2 = new UserDetails("user2");
//int userId = (Integer) session.save(user1); // if you want to save the id to some variable
System.out.println("before save : user id's = "+user1.getId() + " , " + user2.getId());
session.save(user1);
session.save(user2);
System.out.println("after save : user id's = "+user1.getId() + " , " + user2.getId());
session.getTransaction().commit();
Output of this code:
before save : user id's = 0 , 0
after save : user id's = 1 , 2
As per this output, you can see that the id's were not set before we save the UserDetails
entity, once you save the entities then Hibernate set's the id's for your objects - user1
and user2
Add the full link, with:
"http://"
to the beginning of a line, and most decent email clients will auto-link it either before sending, or at the other end when receiving.
For really long urls that will likely wrap due to all the parameters, wrap the link in a less than/greater than symbol. This tells the email client not to wrap the url.
e.g.
<http://www.example.com/foo.php?this=a&really=long&url=with&lots=and&lots=and&lots=of&prameters=on_it>
Here is how I do it on iOS 9 in Swift -
import UIKit
class CustomView : UIView {
init() {
super.init(frame: UIScreen.mainScreen().bounds);
//for debug validation
self.backgroundColor = UIColor.blueColor();
print("My Custom Init");
return;
}
required init?(coder aDecoder: NSCoder) { fatalError("init(coder:) has not been implemented"); }
}
Here is a full project with example:
Add a binding to the selected
property, like this:
<option *ngFor="#workout of workouts"
[selected]="workout.name == 'back'">{{workout.name}}</option>
The standard approach is to give the centered element fixed dimensions, and place it absolutely:
<div class='fullscreenDiv'>
<div class="center">Hello World</div>
</div>?
.center {
position: absolute;
width: 100px;
height: 50px;
top: 50%;
left: 50%;
margin-left: -50px; /* margin is -0.5 * dimension */
margin-top: -25px;
}?
Sometime in the future Comment out the following code in web.config
<!--<system.codedom>
<compilers>
<compiler language="c#;cs;csharp" extension=".cs" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.CSharpCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:6 /nowarn:1659;1699;1701" />
<compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.VBCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:14 /nowarn:41008 /define:_MYTYPE=\"Web\" /optionInfer+" />
</compilers>
</system.codedom>-->
update the to the following code.
<system.web>
<authentication mode="None" />
<compilation debug="true" targetFramework="4.6.1" />
<httpRuntime targetFramework="4.6.1" />
<customErrors mode="Off"/>
<trust level="Full"/>
</system.web>
status 0 appear when an ajax call was cancelled before getting the response by refreshing the page or requesting a URL that is unreachable.
this status is not documented but exist over ajax and makeRequest call's from gadget.io.
See:
Lu Luo, A UML Documentation for a Elevator System
Distributed Embedded Systems, Fall 2000
Ph.D. Project Report
Carneghie Mellon University
You can clear the whole form using onclick function.Here is the code for it.
<button type="reset" value="reset" type="reset" class="btnreset" onclick="window.location.reload()">Reset</button>
window.location.reload() function will refresh your page and all data will clear.
You can do this by setting the display to 'table-cell' and applying a vertical-align: middle;
:
{
display: table-cell;
vertical-align: middle;
}
This is however not supported by all versions of Internet Explorer according to this excerpt I copied from http://www.w3schools.com/cssref/pr_class_display.asp without permission.
Note: The values "inline-table", "table", "table-caption", "table-cell", "table-column", "table-column-group", "table-row", "table-row-group", and "inherit" are not supported by Internet Explorer 7 and earlier. Internet Explorer 8 requires a !DOCTYPE. Internet Explorer 9 supports the values.
The following table shows the allowed display values also from http://www.w3schools.com/cssref/pr_class_display.asp.
If you don't want to use the libraries and want simple answer then the code is given below:
def swap_alpha(test_string):
new_string = ""
for i in test_string:
if i.upper() in test_string:
new_string += i.lower()
elif i.lower():
new_string += i.upper()
else:
return "invalid "
return new_string
user_string = input("enter the string:")
updated = swap_alpha(user_string)
print(updated)
The question is old but I felt the best answer hadn't been given, yet.
Is there an
UPDATE
syntax ... without specifying the column names?
You don't need to know any column names except for some unique column(s) to join on (id
in the example). Works reliably for any possible corner case I can think of.
This is specific to PostgreSQL. I am building dynamic code based on the the information_schema, in particular the table information_schema.columns
, which is defined in the SQL standard and most major RDBMS (except Oracle) have it. But a DO
statement with PL/pgSQL code executing dynamic SQL is totally non-standard PostgreSQL syntax.
DO
$do$
BEGIN
EXECUTE (
SELECT
'UPDATE b
SET (' || string_agg( quote_ident(column_name), ',') || ')
= (' || string_agg('a.' || quote_ident(column_name), ',') || ')
FROM a
WHERE b.id = 123
AND a.id = b.id'
FROM information_schema.columns
WHERE table_name = 'a' -- table name, case sensitive
AND table_schema = 'public' -- schema name, case sensitive
AND column_name <> 'id' -- all columns except id
);
END
$do$;
Assuming a matching column in b
for every column in a
, but not the other way round. b
can have additional columns.
WHERE b.id = 123
is optional, to update a selected row.
Related answers with more explanation:
You still need to know the list of column names that both tables share. With a syntax shortcut for updating multiple columns - shorter than what other answers suggested so far in any case.
UPDATE b
SET ( column1, column2, column3)
= (a.column1, a.column2, a.column3)
FROM a
WHERE b.id = 123 -- optional, to update only selected row
AND a.id = b.id;
This syntax was introduced with Postgres 8.2 in 2006, long before the question was asked. Details in the manual.
Related:
B
If all columns of A
are defined NOT NULL
(but not necessarily B
),
and you know the column names of B
(but not necessarily A
).
UPDATE b
SET (column1, column2, column3, column4)
= (COALESCE(ab.column1, b.column1)
, COALESCE(ab.column2, b.column2)
, COALESCE(ab.column3, b.column3)
, COALESCE(ab.column4, b.column4)
)
FROM (
SELECT *
FROM a
NATURAL LEFT JOIN b -- append missing columns
WHERE b.id IS NULL -- only if anything actually changes
AND a.id = 123 -- optional, to update only selected row
) ab
WHERE b.id = ab.id;
The NATURAL LEFT JOIN
joins a row from b
where all columns of the same name hold same values. We don't need an update in this case (nothing changes) and can eliminate those rows early in the process (WHERE b.id IS NULL
).
We still need to find a matching row, so b.id = ab.id
in the outer query.
db<>fiddle here
Old sqlfiddle.
This is standard SQL except for the FROM
clause.
It works no matter which of the columns are actually present in A
, but the query cannot distinguish between actual NULL values and missing columns in A
, so it is only reliable if all columns in A
are defined NOT NULL
.
There are multiple possible variations, depending on what you know about both tables.
Just do a simple .keys()
>>> dct = {
... "1": "a",
... "3": "b",
... "8": {
... "12": "c",
... "25": "d"
... }
... }
>>>
>>> dct.keys()
['1', '8', '3']
>>> for key in dct.keys(): print key
...
1
8
3
>>>
If you need a sorted list:
keylist = dct.keys()
keylist.sort()
You can find documentation here.
Based on your requirement you can try according option.
to ellipsize, a neologism, means to shorten text using an ellipsis, i.e. three dots ...
or more commonly ligature …
, to stand in for the omitted bits.
Say original value pf text view is aaabbbccc and its fitting inside the view
start
's output will be : ...bccc
end
's output will be : aaab...
middle
's output will be : aa...cc
marquee
's output will be : aaabbbccc auto sliding from right to left
If I understand correctly, you want to get the String of an Editable object, right? If yes, try using toString()
.
Add debouncing, for efficiency http://davidwalsh.name/javascript-debounce-function
That's the way I'd prefer to see if I was maintaining your code. If you manage to find a faster solution, it's going to be very esoteric, and you should really bury it inside of a method that describes what it does.
(does it still work without the ToArray)?
You invoke the function with 2 parameters (@GenId and @Description):
EXEC etl.etl_M_Update_Promo @GenID, @Description
However you have declared the function to take 1 argument:
ALTER PROCEDURE [etl].[etl_M_Update_Promo]
@GenId bigint = 0
SQL Server is telling you that [etl_M_Update_Promo]
only takes 1 parameter (@GenId
)
You can alter the procedure to take two parameters by specifying @Description
.
ALTER PROCEDURE [etl].[etl_M_Update_Promo]
@GenId bigint = 0,
@Description NVARCHAR(50)
AS
.... Rest of your code.
This is caused by the limited support for the MP4 format within the video tag in Firefox. Support was not added until Firefox 21, and it is still limited to Windows 7 and above. The main reason for the limited support revolves around the royalty fee attached to the mp4 format.
Check out Supported media formats and Media formats supported by the audio and video elements directly from the Mozilla crew or the following blog post for more information:
http://pauljacobson.org/2010/01/22/2010122firefox-and-its-limited-html-5-video-support-html/
If you know the full path to the file you can just do something similar to this. However if you question directly relates to relative paths, that I am unfamiliar with and would have to research and test.
path = 'C:\\Users\\Username\\Path\\To\\File'
with open(path, 'w') as f:
f.write(data)
Edit:
Here is a way to do it relatively instead of absolute. Not sure if this works on windows, you will have to test it.
import os
cur_path = os.path.dirname(__file__)
new_path = os.path.relpath('..\\subfldr1\\testfile.txt', cur_path)
with open(new_path, 'w') as f:
f.write(data)
Edit 2: One quick note about __file__
, this will not work in the interactive interpreter due it being ran interactively and not from an actual file.
npm set registry http://85.10.209.91/
(this proxy fetches the original data from registry.npmjs.org and manipulates the tarball urls to fix the tarball file structure issue).
The other solutions seem to have outdated versions.
Change the button to
<button id="search">Search</button>
and add the following script
var url = '@Url.Action("DisplaySearchResults", "Search")';
$('#search').click(function() {
var keyWord = $('#Keyword').val();
$('#searchResults').load(url, { searchText: keyWord });
})
and modify the controller method to accept the search text
public ActionResult DisplaySearchResults(string searchText)
{
var model = // build list based on parameter searchText
return PartialView("SearchResults", model);
}
The jQuery .load
method calls your controller method, passing the value of the search text and updates the contents of the <div>
with the partial view.
Side note: The use of a <form>
tag and @Html.ValidationSummary()
and @Html.ValidationMessageFor()
are probably not necessary here. Your never returning the Index
view so ValidationSummary
makes no sense and I assume you want a null
search text to return all results, and in any case you do not have any validation attributes for property Keyword
so there is nothing to validate.
Edit
Based on OP's comments that SearchCriterionModel
will contain multiple properties with validation attributes, then the approach would be to include a submit button and handle the forms .submit()
event
<input type="submit" value="Search" />
var url = '@Url.Action("DisplaySearchResults", "Search")';
$('form').submit(function() {
if (!$(this).valid()) {
return false; // prevent the ajax call if validation errors
}
var form = $(this).serialize();
$('#searchResults').load(url, form);
return false; // prevent the default submit action
})
and the controller method would be
public ActionResult DisplaySearchResults(SearchCriterionModel criteria)
{
var model = // build list based on the properties of criteria
return PartialView("SearchResults", model);
}
Just Download mysqlclient from here https://www.lfd.uci.edu/~gohlke/pythonlibs/ be careful while downloading the right version depending on your your python version installed. Then proceed with the import. It worked for me because in my case the error was telling to install Visual Studio C++ 14.0 something which wasted my time and occupied around 10GB of space in my C drive. So recommending installing mysqlclient using pip install mysqlclient
For larger data sets where sorting may not be desirable, you can also use the following perl script:
./yourscript.ksh | perl -ne 'if (!defined $x{$_}) { print $_; $x{$_} = 1; }'
This basically just remembers every line output so that it doesn't output it again.
It has the advantage over the "sort | uniq
" solution in that there's no sorting required up front.
I think the difference between the two boils down to access. Environment variables are accessible by any process and Java system properties are only accessible by the process they are added to.
Also as Bohemian stated, env variables are set in the OS (however they 'can' be set through Java) and system properties are passed as command line options or set via setProperty()
.
I recommend using React.createRef()
and ref=this.elementRef
to get the DOM element reference instead of ReactDOM.findDOMNode(this)
. This way you can get the reference to the DOM element as an instance variable.
import React, { Component } from 'react';
import ReactDOM from 'react-dom';
class MenuItem extends Component {
constructor(props) {
super(props);
this.elementRef = React.createRef();
}
handleNVFocus = event => {
console.log('Focused: ' + this.props.menuItem.caption.toUpperCase());
}
componentDidMount() {
this.elementRef.addEventListener('nv-focus', this.handleNVFocus);
}
componentWillUnmount() {
this.elementRef.removeEventListener('nv-focus', this.handleNVFocus);
}
render() {
return (
<element ref={this.elementRef} />
)
}
}
export default MenuItem;
The derivedFactor
function from mosaic
package seems to be designed to handle this. Using this example, it would look like:
library(dplyr)
library(mosaic)
df <- mutate(df, g = derivedFactor(
"2" = (a == 2 | a == 5 | a == 7 | (a == 1 & b == 4)),
"3" = (a == 0 | a == 1 | a == 4 | a == 3 | c == 4),
.method = "first",
.default = NA
))
(If you want the result to be numeric instead of a factor, you can wrap derivedFactor
in an as.numeric
call.)
derivedFactor
can be used for an arbitrary number of conditionals, too.
Check with your bean class. Column data type and bean datatype must be same.
I know it's a bit late, but in case of Java 8, if you are using OffsetDateTime (which offers a lot of advantages, such as TimeZone, Nanoseconds, etc.), you can use the following code:
OffsetDateTime reallyEndOfDay = someDay.withHour(23).withMinute(59).withSecond(59).withNano(999999999);
// output: 2019-01-10T23:59:59.999999999Z
Here is an article that explains the problem and solution with alot more detail:
Sorting Locked Cells in Protected Worksheets
The thing to understand is that the purpose of locking cells is to prevent them from being changed, and sorting permanently changes cell values. You can write a macro, but a much better solution is to use the "Allow Users to Edit Ranges" feature. This makes the cells editable so sorting can work, but because the cells are still technically locked you can prevent users from selecting them.
The fastest way if your keys are in an SSH agent:
$ ssh-add -L | ssh-keygen -E md5 -lf /dev/stdin
Each key in the agent will be printed as:
4096 MD5:8f:c9:dc:40:ec:9e:dc:65:74:f7:20:c1:29:d1:e8:5a /Users/cmcginty/.ssh/id_rsa (RSA)
You need the :not()
selector:
$('div[class^="first-"]:not(.first-bar)')
or, alternatively, the .not()
method:
$('div[class^="first-"]').not('.first-bar');
/*working only in ipad portrait device*/
@media only screen and (width: 768px) and (height: 1024px) and (orientation:portrait) {
body{
background: red !important;
}
}
/*working only in ipad landscape device*/
@media all and (width: 1024px) and (height: 768px) and (orientation:landscape){
body{
background: green !important;
}
}
In the media query of specific devices, please use '!important' keyword to override the default CSS. Otherwise that does not change your webpage view on that particular devices.
After building the project right click on the project Debug > “Debug Configurations”, as shown below
In the “debugger” tab, ensure the “GDB command file” now points to your “.gdbinit” file. Else, input the path to your “.gdbinit” configuration file :
Click “Apply” and “Debug”. A native DOS command line should be launched as shown below
Roughly you can have 3 choices to display RTSP video stream in a web page:
You can find the code to embed the activeX via google search.
As far as I know, there are some limitations for each player.
one of the Easy Way for Encode Or Decode HTML-entities
just Call a Function with one argument...
Decode HTML-entities
function decodeHTMLEntities(text) {
var textArea = document.createElement('textarea');
textArea.innerHTML = text;
return textArea.value;
}
Decode HTML-entities (JQuery)
function decodeHTMLEntities(text) {
return $("<textarea/>").html(text).text();
}
Encode HTML-entities
function encodeHTMLEntities(text) {
var textArea = document.createElement('textarea');
textArea.innerText = text;
return textArea.innerHTML;
}
Encode HTML-entities (JQuery)
function encodeHTMLEntities(text) {
return $("<textarea/>").text(text).html();
}
You may also try standard sql un-pivoting method by using a sequence of logic with the following code.. The following code has 3 steps:
remove any null combinations ( if exists, table expression can be fully avoided if there are strictly no null values in base table)
select *
from
(
select name, subject,
case subject
when 'Maths' then maths
when 'Science' then science
when 'English' then english
end as Marks
from studentmarks
Cross Join (values('Maths'),('Science'),('English')) AS Subjct(Subject)
)as D
where marks is not null;
In Ronald's example, if the date formats are different (as displayed below) then modify the format
parameter
survey <- data.frame(date=c("2012-07-26","2012-07-25"),tx_start=c("2012-01-01","2012-01-01"))
survey$date_diff <- as.Date(as.character(survey$date), format="%Y-%m-%d")-
as.Date(as.character(survey$tx_start), format="%Y-%m-%d")
survey:
date tx_start date_diff
1 2012-07-26 2012-01-01 207 days
2 2012-07-25 2012-01-01 206 days
here, I'm passing the date object and converting it into UTC time.
$.fn.convertTimeToUTC = function (convertTime) {
if($(this).isObject(convertTime)) {
return moment.tz(convertTime.format("Y-MM-DD HH:mm:ss"), moment.tz.guess()).utc().format("Y-MM-DD HH:mm:ss");
}
};
// Returns if a value is an object
$.fn.isObject = function(value) {
return value && typeof value === 'object';
};
//you can call it as below
$(this).convertTimeToUTC(date);
Netbeans needs to be able to index the maven repository. Allow it to do that and try again. It was giving me the same error and after it indexed the repository it ran like a charm
Use the start and end delimiters: ^abc$
With a more recent version of docker, this could be done with docker-compose and its extra_hosts
directive
Add hostname mappings.
Use the same values as thedocker run
client--add-host
parameter (which should already be available for docker 1.8).
extra_hosts:
- "somehost:162.242.195.82"
- "otherhost:50.31.209.229"
In short: modify /etc/hosts
of your container when running it, instead of when building it.
With Docker 17.x+, you have a docker build --add-host
mentioned below, but, as commented in issue 34078 and in this answer:
The
--add-host
feature during build is designed to allow overriding a host during build, but not to persist that configuration in the image.
The solutions mentioned do refer the docker-compose I was suggesting above:
- Run an internal DNS; you can set the default DNS server to use in the daemon; that way every container started will automatically use the configured DNS by default
docker-compose.yml
to your developers.For a number like your example, I would recommend doing this over substring
:
console.log(parseFloat('12345.00').toFixed(1));
_x000D_
Do note that this will actually round the number, though, which I would imagine is desired but maybe not:
console.log(parseFloat('12345.46').toFixed(1));
_x000D_
check your nginx config file extension is *.conf.
for example: /etc/nginx/conf.d/myfoo.conf
I got the same situation. After I rename the my config file from myfoo to myfoo.conf, it fixed. Do not forget to restart nginx after rename it.
//======================================================
// Recursely Delete files using:
// Gnome-Glib & C++11
//======================================================
#include <iostream>
#include <string>
#include <glib.h>
#include <glib/gstdio.h>
using namespace std;
int DirDelete(const string& path)
{
const gchar* p;
GError* gerr;
GDir* d;
int r;
string ps;
string path_i;
cout << "open:" << path << "\n";
d = g_dir_open(path.c_str(), 0, &gerr);
r = -1;
if (d) {
r = 0;
while (!r && (p=g_dir_read_name(d))) {
ps = string{p};
if (ps == "." || ps == "..") {
continue;
}
path_i = path + string{"/"} + p;
if (g_file_test(path_i.c_str(), G_FILE_TEST_IS_DIR) != 0) {
cout << "recurse:" << path_i << "\n";
r = DirDelete(path_i);
}
else {
cout << "unlink:" << path_i << "\n";
r = g_unlink(path_i.c_str());
}
}
g_dir_close(d);
}
if (r == 0) {
r = g_rmdir(path.c_str());
cout << "rmdir:" << path << "\n";
}
return r;
}
A simple way to getting resource ID from string. Here resourceName is the name of resource ImageView in drawable folder which is included in XML file as well.
int resID = getResources().getIdentifier(resourceName, "id", getPackageName());
ImageView im = (ImageView) findViewById(resID);
Context context = im.getContext();
int id = context.getResources().getIdentifier(resourceName, "drawable",
context.getPackageName());
im.setImageResource(id);
Another sneaky issue related to this is naming your columns with -
instead of _
.
Something like this will trigger an error at the moment your tables are getting created.
@Column(name="verification-token")
json_decode($json, true);
// the second param being true will return associative array. This one is easy.
Write the telnet session inside a BAT Dos file and execute.
Hope it help. :)
const unsigned attribName = getname();
const unsigned attribVal = getvalue();
const char *attrName=NULL, *attrVal=NULL;
attrName = (const char*) attribName;
attrVal = (const char*) attribVal;
No you can't overload it; a static constructor is useful for initializing any static fields associated with a type (or any other per-type operations) - useful in particular for reading required configuration data into readonly fields, etc.
It is run automatically by the runtime the first time it is needed (the exact rules there are complicated (see "beforefieldinit"), and changed subtly between CLR2 and CLR4). Unless you abuse reflection, it is guaranteed to run at most once (even if two threads arrive at the same time).
One way to find out:
sudo /usr/libexec/locate.updatedb
# wait a few minutes for it to finish
locate my.cnf
What solved it for me was changing abstract_target
to target
for the main target in my Podfile. I had previously set it to abstract_target
and this caused the described error. Now it works like a charm
Using bitwise operation would be a better solution. Try this
function formatSizeUnits(bytes)
{
if ( ( bytes >> 30 ) & 0x3FF )
bytes = ( bytes >>> 30 ) + '.' + ( bytes & (3*0x3FF )) + 'GB' ;
else if ( ( bytes >> 20 ) & 0x3FF )
bytes = ( bytes >>> 20 ) + '.' + ( bytes & (2*0x3FF ) ) + 'MB' ;
else if ( ( bytes >> 10 ) & 0x3FF )
bytes = ( bytes >>> 10 ) + '.' + ( bytes & (0x3FF ) ) + 'KB' ;
else if ( ( bytes >> 1 ) & 0x3FF )
bytes = ( bytes >>> 1 ) + 'Bytes' ;
else
bytes = bytes + 'Byte' ;
return bytes ;
}
I prefer to employ:
from matplotlib import rc
#rc('font',**{'family':'sans-serif','sans-serif':['Helvetica']})
rc('font',**{'family':'serif','serif':['Times']})
rc('text', usetex=True)
You are not putting a "
before the end of the line.
Use """
if you want to do this:
""" a very long string ......
....that can span multiple lines
"""
My solution would be to use a parameterised query, as the connectivity objects take care of formatting the data correctly (including ensuring the correct data-type, and escaping "dangerous" characters where applicable):
// Assuming "conn" is an open SqlConnection
using(SqlCommand cmd = new SqlCommand("INSERT INTO mssqltable(varbinarycolumn) VALUES (@binaryValue)", conn))
{
// Replace 8000, below, with the correct size of the field
cmd.Parameters.Add("@binaryValue", SqlDbType.VarBinary, 8000).Value = arraytoinsert;
cmd.ExecuteNonQuery();
}
Edit: Added the wrapping "using" statement as suggested by John Saunders to correctly dispose of the SqlCommand after it is finished with
private void Form1_Load(object sender, EventArgs e)
{
PictureBox pb = new PictureBox();
pb.Location = new Point(0, 0);
pb.Size = new Size(150, 150);
pb.Image = Image.FromFile("E:\\Wallpaper (204).jpg");
pb.Visible = true;
this.Controls.Add(pb);
}
Just my 2 cents as stated in the answer above : The copy() method shouldn't be used as-is for copying files without a slight adjustment:
function copy(callback) {
var readStream = fs.createReadStream(oldPath);
var writeStream = fs.createWriteStream(newPath);
readStream.on('error', callback);
writeStream.on('error', callback);
// Do not callback() upon "close" event on the readStream
// readStream.on('close', function () {
// Do instead upon "close" on the writeStream
writeStream.on('close', function () {
callback();
});
readStream.pipe(writeStream);
}
The copy function wrapped in a Promise:
function copy(oldPath, newPath) {
return new Promise((resolve, reject) => {
const readStream = fs.createReadStream(oldPath);
const writeStream = fs.createWriteStream(newPath);
readStream.on('error', err => reject(err));
writeStream.on('error', err => reject(err));
writeStream.on('close', function() {
resolve();
});
readStream.pipe(writeStream);
})
However, keep in mind that the filesystem might crash if the target folder doesn't exist.
You want to be using the iframe's srcdoc
attribute for that (MDN documentation).
var html_string = "<html><body><h1>My epic iframe</p></body></html>";
document.querySelector('iframe').srcdoc = html_string;
The nice thing about using this method over for example Red's method listed on this page, is that iframe contents added with srcdoc
are seen as the same-origin. That way can continue to manipulate and access the iframe with JavaScript if you wish.
I had the same problem yesterday. I solved it like this:
var obj = {
foo:{},
bar:{},
baz:{}
},
first = null,
key = null;
for (var key in obj) {
first = obj[key];
if(typeof(first) !== 'function') {
break;
}
}
// first is the first enumerated property, and key it's corresponding key.
Not the most elegant solution, and I am pretty sure that it may yield different results in different browsers (i.e. the specs says that enumeration is not required to enumerate the properties in the same order as they were defined). However, I only had a single property in my object so that was a non-issue. I just needed the first key.
This thing also happened with my code, but somehow I solved my problem. I checked my routes folder (where my all endpoints are their). I would recommend you check your routes folder file and check whether you forgot to add your particular router link.
The Swift documentation recommends the following way to initialize an empty Dictionary:
var emptyDict = [String: String]()
I was a little confused when I first came across this question because different answers showed different ways to initialize an empty Dictionary. It turns out that there are actually a lot of ways you can do it, though some are a little redundant or overly verbose given Swift's ability to infer the type.
var emptyDict = [String: String]()
var emptyDict = Dictionary<String, String>()
var emptyDict: [String: String] = [:]
var emptyDict: [String: String] = [String: String]()
var emptyDict: [String: String] = Dictionary<String, String>()
var emptyDict: Dictionary = [String: String]()
var emptyDict: Dictionary = Dictionary<String, String>()
var emptyDict: Dictionary<String, String> = [:]
var emptyDict: Dictionary<String, String> = [String: String]()
var emptyDict: Dictionary<String, String> = Dictionary<String, String>()
After you have an empty Dictionary you can add a key-value pair like this:
emptyDict["some key"] = "some value"
If you want to empty your dictionary again, you can do the following:
emptyDict = [:]
The types are still <String, String>
because that is how it was initialized.
to send over gmail, you need to use an encrypted connection. this is not possible with telnet alone, but you can use tools like openssl
either connect using the starttls option in openssl to convert the plain connection to encrypted...
openssl s_client -starttls smtp -connect smtp.gmail.com:587 -crlf -ign_eof
or connect to a ssl sockect directly...
openssl s_client -connect smtp.gmail.com:465 -crlf -ign_eof
EHLO localhost
after that, authenticate to the server using the base64 encoded username/password
AUTH PLAIN AG15ZW1haWxAZ21haWwuY29tAG15cGFzc3dvcmQ=
to get this from the commandline:
echo -ne '\[email protected]\00password' | base64
AHVzZXJAZ21haWwuY29tAHBhc3N3b3Jk
then continue with "mail from:" like in your example
example session:
openssl s_client -connect smtp.gmail.com:465 -crlf -ign_eof
[... lots of openssl output ...]
220 mx.google.com ESMTP m46sm11546481eeh.9
EHLO localhost
250-mx.google.com at your service, [1.2.3.4]
250-SIZE 35882577
250-8BITMIME
250-AUTH LOGIN PLAIN XOAUTH
250 ENHANCEDSTATUSCODES
AUTH PLAIN AG5pY2UudHJ5QGdtYWlsLmNvbQBub2l0c25vdG15cGFzc3dvcmQ=
235 2.7.0 Accepted
MAIL FROM: <[email protected]>
250 2.1.0 OK m46sm11546481eeh.9
rcpt to: <[email protected]>
250 2.1.5 OK m46sm11546481eeh.9
DATA
354 Go ahead m46sm11546481eeh.9
Subject: it works
yay!
.
250 2.0.0 OK 1339757532 m46sm11546481eeh.9
quit
221 2.0.0 closing connection m46sm11546481eeh.9
read:errno=0
this is how i did it:
String[] listAges = getResources().getStringArray(R.array.ages);
// Creating adapter for spinner
ArrayAdapter<String> dataAdapter =
new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, listAges);
// Drop down layout style - list view with radio button
dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
// attaching data adapter to spinner
spinner_age.getBackground().setColorFilter(ContextCompat.getColor(this, R.color.spinner_icon), PorterDuff.Mode.SRC_ATOP);
spinner_age.setAdapter(dataAdapter);
spinner_age.setSelection(0);
spinner_age.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
String item = parent.getItemAtPosition(position).toString();
if(position > 0){
// get spinner value
Toast.makeText(parent.getContext(), "Age..." + item, Toast.LENGTH_SHORT).show();
}else{
// show toast select gender
Toast.makeText(parent.getContext(), "none" + item, Toast.LENGTH_SHORT).show();
}
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
One way to workaround the lack of "?" operator using Java 8 without the overhead of try-catch (which could also hide a NullPointerException
originated elsewhere, as mentioned) is to create a class to "pipe" methods in a Java-8-Stream style.
public class Pipe<T> {
private T object;
private Pipe(T t) {
object = t;
}
public static<T> Pipe<T> of(T t) {
return new Pipe<>(t);
}
public <S> Pipe<S> after(Function<? super T, ? extends S> plumber) {
return new Pipe<>(object == null ? null : plumber.apply(object));
}
public T get() {
return object;
}
public T orElse(T other) {
return object == null ? other : object;
}
}
Then, the given example would become:
public String getFirstName(Person person) {
return Pipe.of(person).after(Person::getName).after(Name::getGivenName).get();
}
[EDIT]
Upon further thought, I figured out that it is actually possible to achieve the same only using standard Java 8 classes:
public String getFirstName(Person person) {
return Optional.ofNullable(person).map(Person::getName).map(Name::getGivenName).orElse(null);
}
In this case, it is even possible to choose a default value (like "<no first name>"
) instead of null
by passing it as parameter of orElse
.
You can use other characters besides "/" in substitution:
sed "s#$1#$2#g" -i FILE
You probably shouldn't do this; you're breaking the basic pattern of how Make works. But here it is:
action:
@echo action $(filter-out $@,$(MAKECMDGOALS))
%: # thanks to chakrit
@: # thanks to William Pursell
EDIT:
To explain the first command,
$(MAKECMDGOALS)
is the list of "targets" spelled out on the command line, e.g. "action value1 value2".
$@
is an automatic variable for the name of the target of the rule, in this case "action".
filter-out
is a function that removes some elements from a list. So $(filter-out bar, foo bar baz)
returns foo baz
(it can be more subtle, but we don't need subtlety here).
Put these together and $(filter-out $@,$(MAKECMDGOALS))
returns the list of targets specified on the command line other than "action", which might be "value1 value2".
I don't think you need to remove "#" from href. Following works with Angularjs 1.2.10
<a href="#/" ng-click="logout()">Logout</a>
I often used the following code to import a module which sit under the same directory as the running script. It will first get the directory from which powershell is running
$currentPath=Split-Path ((Get-Variable MyInvocation -Scope 0).Value).MyCommand.Path
import-module "$currentPath\sqlps.ps1"
This might have been asked before. See Can I add jars to maven 2 build classpath without installing them?
In a nutshell: include your jar as dependency with system scope. This requires specifying the absolute path to the jar.
See also http://maven.apache.org/guides/introduction/introduction-to-dependency-mechanism.html
Use Dictionary Items:
{% for key, value in my_dictionay.items %}
<li>{{ key }} : {{ value }}</li>
{% endfor %}
Using zero value for font-size
and line-height
in the element does the trick for me:
<style>
.text {
display: block;
width: 200px;
height: 200px;
font-size: 0;
line-height: 0;
}
</style>
<span class="text">
Invisible Text
</span>
I don't think you need to select anything at all. I opened two blank workbooks Book1 and Book2, put the value "A" in Range("A1") of Sheet1 in Book2, and submitted the following code in the immediate window -
Workbooks(2).Worksheets(1).Range("A1").Copy Workbooks(1).Worksheets(1).Range("A1")
The Range("A1") in Sheet1 of Book1 now contains "A".
Also, given the fact that in your code you are trying to copy from the ActiveWorkbook to "myfile.xls", the order seems to be reversed as the Copy method should be applied to a range in the ActiveWorkbook, and the destination (argument to the Copy function) should be the appropriate range in "myfile.xls".
**Simple solution**
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int size;
System.out.println("Enter the number of size of array");
size = sc.nextInt();
int[] a = new int[size];
System.out.println("Enter the array element");
//For reading the element
for(int i=0;i<size;i++) {
a[i] = sc.nextInt();
}
//For print the array element
for(int i : a) {
System.out.print(i+" ,");
}
}
For this example we take it for granted that varcharcol doesn't contain ''
and have no empty cell against this column
select * from some_table where varcharCol = ''
select * from some_table where varcharCol like ''
The first one results in 0 row output while the second one shows the whole list. = is strictly-match case while like acts like a filter. if filter has no criteria, every data is valid.
like - by the virtue of its purpose works a little slower and is intended for use with varchar and similar data.
Change the environment path variable C:\Program Files\nodejs\node_modules\npm\bin and open the command terminal and npm -v and
Click "view details" to find the inner exception.
OK, nevermind.. I found the trick:
scales: {
yAxes: [
{
gridLines: {
lineWidth: 0
}
}
]
}
_.unique
no longer works for the current version of Lodash as version 4.0.0 has this breaking change. The functionality of _.unique
was splitted into _.uniq
, _.sortedUniq
, _.sortedUniqBy
, and _.uniqBy
.
You could use _.uniqBy
like this:
_.uniqBy(data, function (e) {
return e.id;
});
...or like this:
_.uniqBy(data, 'id');
Documentation: https://lodash.com/docs#uniqBy
For older versions of Lodash (< 4.0.0 ):
Assuming that the data should be uniqued by each object's id
property and your data is stored in data
variable, you can use the _.unique()
function like this:
_.unique(data, function (e) {
return e.id;
});
Or simply like this:
_.uniq(data, 'id');
An answer taken from ChristopheD here: https://stackoverflow.com/a/2500023/1225603
r = "456results string789"
s = ''.join(x for x in r if x.isdigit())
print int(s)
456789
The following works for me:
git diff master:foo foo
In the past, it may have been:
git diff foo master:foo
You can change the value of the select element, which changes the selected option to the one with that value, using JavaScript:
document.getElementById('sel').value = 'bike';??????????
.process-list:after{
content: "\2191";
position: absolute;
top:50%;
right:-8px;
background-color: #ea1f41;
width:35px;
height: 35px;
border:2px solid #ffffff;
border-radius: 5px;
color: #ffffff;
z-index: 10000;
-webkit-transform: rotate(50deg) translateY(-50%);
-moz-transform: rotate(50deg) translateY(-50%);
-ms-transform: rotate(50deg) translateY(-50%);
-o-transform: rotate(50deg) translateY(-50%);
transform: rotate(50deg) translateY(-50%);
}
you can check this code . i hope you will easily understand.
In Ubuntu 18.04, below are the steps that I followed.
python3 -m pip install --upgrade pip
For some reason you will be getting an error, and that be fixed by making bash forget the wrongly referenced locations using the following command.
hash -r pip
-First Move Your Code Files in side the "src" Folder
-Make sure your Main method is declared like the following
public class Main {
public static void main(String []args){
}
}
then:
and it should work
Here is what I ended up with for the similar problem. The idea is the same as in @Avi's answer, but I also wanted to avoid the static "System.setProperty("https.protocols", "TLSv1");", so that any adjustments won't affect the system. Inspired by an answer from here http://www.coderanch.com/t/637177/Security/Disabling-handshake-message-Java
public class MyCustomClientHttpRequestFactory extends SimpleClientHttpRequestFactory {
@Override
protected void prepareConnection(HttpURLConnection connection, String httpMethod) {
try {
if (!(connection instanceof HttpsURLConnection)) {
throw new RuntimeException("An instance of HttpsURLConnection is expected");
}
HttpsURLConnection httpsConnection = (HttpsURLConnection) connection;
TrustManager[] trustAllCerts = new TrustManager[]{
new X509TrustManager() {
public java.security.cert.X509Certificate[] getAcceptedIssuers() {
return null;
}
public void checkClientTrusted(X509Certificate[] certs, String authType) {
}
public void checkServerTrusted(X509Certificate[] certs, String authType) {
}
}
};
SSLContext sslContext = SSLContext.getInstance("SSL");
sslContext.init(null, trustAllCerts, new java.security.SecureRandom());
httpsConnection.setSSLSocketFactory(new MyCustomSSLSocketFactory(sslContext.getSocketFactory()));
httpsConnection.setHostnameVerifier((hostname, session) -> true);
super.prepareConnection(httpsConnection, httpMethod);
} catch (Exception e) {
throw Throwables.propagate(e);
}
}
/**
* We need to invoke sslSocket.setEnabledProtocols(new String[] {"SSLv3"});
* see http://www.oracle.com/technetwork/java/javase/documentation/cve-2014-3566-2342133.html (Java 8 section)
*/
private static class MyCustomSSLSocketFactory extends SSLSocketFactory {
private final SSLSocketFactory delegate;
public MyCustomSSLSocketFactory(SSLSocketFactory delegate) {
this.delegate = delegate;
}
@Override
public String[] getDefaultCipherSuites() {
return delegate.getDefaultCipherSuites();
}
@Override
public String[] getSupportedCipherSuites() {
return delegate.getSupportedCipherSuites();
}
@Override
public Socket createSocket(final Socket socket, final String host, final int port, final boolean autoClose) throws IOException {
final Socket underlyingSocket = delegate.createSocket(socket, host, port, autoClose);
return overrideProtocol(underlyingSocket);
}
@Override
public Socket createSocket(final String host, final int port) throws IOException {
final Socket underlyingSocket = delegate.createSocket(host, port);
return overrideProtocol(underlyingSocket);
}
@Override
public Socket createSocket(final String host, final int port, final InetAddress localAddress, final int localPort) throws IOException {
final Socket underlyingSocket = delegate.createSocket(host, port, localAddress, localPort);
return overrideProtocol(underlyingSocket);
}
@Override
public Socket createSocket(final InetAddress host, final int port) throws IOException {
final Socket underlyingSocket = delegate.createSocket(host, port);
return overrideProtocol(underlyingSocket);
}
@Override
public Socket createSocket(final InetAddress host, final int port, final InetAddress localAddress, final int localPort) throws IOException {
final Socket underlyingSocket = delegate.createSocket(host, port, localAddress, localPort);
return overrideProtocol(underlyingSocket);
}
private Socket overrideProtocol(final Socket socket) {
if (!(socket instanceof SSLSocket)) {
throw new RuntimeException("An instance of SSLSocket is expected");
}
((SSLSocket) socket).setEnabledProtocols(new String[] {"SSLv3"});
return socket;
}
}
}
While each generated GUID is not guaranteed to be unique, the total number of unique keys (2128 or 3.4×1038) is so large that the probability of the same number being generated twice is very small. For example, consider the observable universe, which contains about 5×1022 stars; every star could then have 6.8×1015 universally unique GUIDs.
From Wikipedia.
These are some good articles on how a GUID is made (for .NET) and how you could get the same guid in the right situation.
https://ericlippert.com/2012/04/24/guid-guide-part-one/
https://ericlippert.com/2012/04/30/guid-guide-part-two/
https://ericlippert.com/2012/05/07/guid-guide-part-three/
??
I have query,
$("#login-button").click(function(e){ alert("hiii");
var username = $("#username-field").val();
var password = $("#username-field").val();
alert(username);
alert("password" + password);
var markers = { "userName" : "admin","password" : "admin123"};
$.ajax({
type: "POST",
url: url,
// The key needs to match your method's input parameter (case-sensitive).
data: JSON.stringify(markers),
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function(data){alert("got the data"+data);},
failure: function(errMsg) {
alert(errMsg);
}
});
});
I'm posting the the login details in json and getting a string as "Success"
,but I'm not getting the response.
window.open ("http://www.javascript-coder.com",
"mywindow","menubar=1,resizable=1,width=350,height=250");
from
http://www.javascript-coder.com/window-popup/javascript-window-open.phtml
:]
Some version working
<div class="hidden-xs">Only Mobile hidden</div>
<div class="visible-xs">Only Mobile visible</div>
Seems you can just use the prop method on the angular element:
var top = $el.prop('offsetTop');
Works for me. Does anyone know any downside to this?
from traceback import format_exc
try:
fault = 10/0
except ZeroDivision:
print(format_exc())
Another possibility is to use the format_exc() method from the traceback module.
One already exists. If you cannot get over the "Move" syntax of the System.IO
namespace. There is a static class FileSystem
within the Microsoft.VisualBasic.FileIO namespace that has both a RenameDirectory
and RenameFile
already within it.
As mentioned by SLaks, this is just a wrapper for Directory.Move
and File.Move
.
You would have to configure your webserver to utilize PHP as handler for .html
files. This is typically done by modifying your with AddHandler
to include .html
along with .php
.
Note that this could have a performance impact as this would cause ALL .html files to be run through PHP handler even if there is no PHP involved. So you might strongly consider using .php
extension on these files and adding a redirect as necessary to route requests to specific .html URL's to their .php equivalents.
With Bootstrap 2.0 you can give your tabs the "stackable" class, which makes them stack vertically.
Try this:
Create A Macro with the following thing inside:
Selection.Copy
ActiveCell.Offset(1, 0).Select
ActiveSheet.Paste
ActiveCell.Offset(-1, 1).Select
Selection.Copy
ActiveCell.Offset(1, 0).Select
ActiveSheet.Paste
ActiveCell.Offset(0, -1).Select
That particular macro will copy the current cell (place your cursor in the VOL cell you wish to copy) down one row and then copy the CAP cell also.
This is only a single loop so you can automate copying VOL and CAP of where your current active cell (where your cursor is) to down 1 row.
Just put it inside a For loop statement to do it x number of times. like:
For i = 1 to 100 'Do this 100 times
Selection.Copy
ActiveCell.Offset(1, 0).Select
ActiveSheet.Paste
ActiveCell.Offset(-1, 1).Select
Selection.Copy
ActiveCell.Offset(1, 0).Select
ActiveSheet.Paste
ActiveCell.Offset(0, -1).Select
Next i
The solution is this:
<input (click)="focusOut()" type="text" matInput [formControl]="inputControl"
[matAutocomplete]="auto">
<mat-autocomplete #auto="matAutocomplete" [displayWith]="displayFn" >
<mat-option (onSelectionChange)="submitValue($event)" *ngFor="let option of
options | async" [value]="option">
{{option.name | translate}}
</mat-option>
</mat-autocomplete>
TS
focusOut() {
this.inputControl.disable();
this.inputControl.enable();
}
window.onresize = function(){
var img = document.getElementById('fullsize');
img.style.width = "100%";
};
In IE onresize
event gets fired on every pixel change (width or height) so there could be performance issue. Delay image resizing for few milliseconds by using javascript's window.setTimeout().
http://mbccs.blogspot.com/2007/11/fixing-window-resize-event-in-ie.html
If you wanna add autoplay function to it. Simply replace
this.href.replace(new RegExp("watch\\?v=", "i"), 'v/'),
with
this.href = this.href.replace(new RegExp("watch\\?v=", "i"), 'v/') + '&autoplay=1',
also you can do the same with vimeo
this.href.replace(new RegExp("([0-9])","i"),'moogaloop.swf?clip_id=$1'),
with
this.href = this.href.replace(new RegExp("([0-9])","i"),'moogaloop.swf?clip_id=$1') + '&autoplay=1',
They're generally stored on the server. Where they're stored is up to you as the developer. You can use the session.save_handler
configuration variable and the session_set_save_handler
to control how sessions get saved on the server. The default save method is to save sessions to files. Where they get saved is controlled by the session.save_path
variable.
Take a look on MDN
It will render html element using creating SVG images.
For Example:
There is <em>I</em> like <span style="color:white; text-shadow:0 0 2px blue;">cheese</span>
HTML element. And I want to add it into <canvas id="canvas" style="border:2px solid black;" width="200" height="200"></canvas>
Canvas Element.
Here is Javascript Code to add HTML element to canvas.
var canvas = document.getElementById('canvas');_x000D_
var ctx = canvas.getContext('2d');_x000D_
_x000D_
var data = '<svg xmlns="http://www.w3.org/2000/svg" width="200" height="200">' +_x000D_
'<foreignObject width="100%" height="100%">' +_x000D_
'<div xmlns="http://www.w3.org/1999/xhtml" style="font-size:40px">' +_x000D_
'<em>I</em> like <span style="color:white; text-shadow:0 0 2px blue;">cheese</span>' +_x000D_
'</div>' +_x000D_
'</foreignObject>' +_x000D_
'</svg>';_x000D_
_x000D_
var DOMURL = window.URL || window.webkitURL || window;_x000D_
_x000D_
var img = new Image();_x000D_
var svg = new Blob([data], {_x000D_
type: 'image/svg+xml;charset=utf-8'_x000D_
});_x000D_
var url = DOMURL.createObjectURL(svg);_x000D_
_x000D_
img.onload = function() {_x000D_
ctx.drawImage(img, 0, 0);_x000D_
DOMURL.revokeObjectURL(url);_x000D_
}_x000D_
_x000D_
img.src = url;
_x000D_
<canvas id="canvas" style="border:2px solid black;" width="200" height="200"></canvas>
_x000D_
You can do the following command to see the username you are logged in with and the registry used:
docker system info | grep -E 'Username|Registry'
The BigDecimal can not be a double. you can use Int number. if you want to display exactly own number, you can use the String constructor of BigDecimal .
like this:
BigDecimal bd1 = new BigDecimal("10.0001");
now, you can display bd1 as 10.0001
So simple. GOOD LUCK.
You use something like
from flask import send_file
@app.route('/get_image')
def get_image():
if request.args.get('type') == '1':
filename = 'ok.gif'
else:
filename = 'error.gif'
return send_file(filename, mimetype='image/gif')
to send back ok.gif
or error.gif
, depending on the type query parameter. See the documentation for the send_file
function and the request
object for more information.
In the very most simple case of no collisions
See also:
man git-pull
More precisely, git pull runs git fetch with the given parameters and calls git merge to merge the retrieved branch heads into the current branch. With --rebase, it runs git rebase instead of git merge.
See also:
When should I use git pull --rebase?
http://git-scm.com/book/en/Git-Branching-Rebasing
Typically you model the enum itself as a class with the enum
stereotype
out
or ref
(since that changes the reference, not the object). A programmer therefore knows that if string x = "abc"
at the start of a method, and that doesn't change in the body of the method, then x == "abc"
at the end of the method."abc" == "ab" + "c"
. While this doesn't require immutability, the fact that a reference to such a string will always equal "abc" throughout its lifetime (which does require immutability) makes uses as keys where maintaining equality to previous values is vital, much easier to ensure correctness of (strings are indeed commonly used as keys).Christmas.AddMonths(1)
produces a new DateTime
rather than changing a mutable one. (Another example, if I as a mutable object change my name, what has changed is which name I am using, "Jon" remains immutable and other Jons will be unaffected.return this
. Since the copy can't be changed anyway, pretending something is its own copy is safe.In all, for objects which don't have undergoing change as part of their purpose, there can be many advantages in being immutable. The main disadvantage is in requiring extra constructions, though even here it's often overstated (remember, you have to do several appends before StringBuilder becomes more efficient than the equivalent series of concatenations, with their inherent construction).
It would be a disadvantage if mutability was part of the purpose of an object (who'd want to be modeled by an Employee object whose salary could never ever change) though sometimes even then it can be useful (in a many web and other stateless applications, code doing read operations is separate from that doing updates, and using different objects may be natural - I wouldn't make an object immutable and then force that pattern, but if I already had that pattern I might make my "read" objects immutable for the performance and correctness-guarantee gain).
Copy-on-write is a middle ground. Here the "real" class holds a reference to a "state" class. State classes are shared on copy operations, but if you change the state, a new copy of the state class is created. This is more often used with C++ than C#, which is why it's std:string enjoys some, but not all, of the advantages of immutable types, while remaining mutable.
Use the built-in time
keyword:
$ help time time: time [-p] PIPELINE Execute PIPELINE and print a summary of the real time, user CPU time, and system CPU time spent executing PIPELINE when it terminates. The return status is the return status of PIPELINE. The `-p' option prints the timing summary in a slightly different format. This uses the value of the TIMEFORMAT variable as the output format.
Example:
$ time sleep 2
real 0m2.009s user 0m0.000s sys 0m0.004s
I made this approach based on mjaggard answer:
public static void toastAnywhere(final String text) {
Handler handler = new Handler(Looper.getMainLooper());
handler.post(new Runnable() {
public void run() {
Toast.makeText(SuperApplication.getInstance().getApplicationContext(), text,
Toast.LENGTH_LONG).show();
}
});
}
Worked well for me.
If you paste the listing into your word processor instead of Notepad, (since each file name is in quotation marks with the full path name), you can highlight all the stuff you don't want on the first file, then use Find and Replace to replace every occurrence of that with nothing. Same with the ending quote (").
It makes a nice clean list of file names.
The basic problem here is that you are mistaking System.Environment.Exit
for return
.
As others have noted, the core of the solution is to use git rev-parse --show-cdup
. However, there are a few of edge cases to address:
When the cwd already is the root of the working tree, the command yields an empty string.
Actually it produces an empty line, but command substitution strip off the trailing line break. The final result is an empty string.
Most answers suggest prepending the output with ./
so that an empty output becomes "./"
before it is fed to cd
.
When GIT_WORK_TREE is set to a location that is not the parent of the cwd, the output may be an absolute pathname.
Prepending ./
is wrong in this situation. If a ./
is prepended to an absolute path, it becomes a relative path (and they only refer to the same location if the cwd is the root directory of the system).
The output may contain whitespace.
This really only applies in the second case, but it has an easy fix: use double quotes around the command substitution (and any subsequent uses of the value).
As other answers have noted, we can do cd "./$(git rev-parse --show-cdup)"
, but this breaks in the second edge case (and the third edge case if we leave off the double quotes).
Many shells treat cd ""
as a no-op, so for those shells we could do cd "$(git rev-parse --show-cdup)"
(the double quotes protect the empty string as an argument in the first edge case, and preserve whitespace in the third edge case). POSIX says the result of cd ""
is unspecified, so it may be best to avoid making this assumption.
A solution that works in all of the above cases requires a test of some sort. Done explicitly, it might look like this:
cdup="$(git rev-parse --show-cdup)" && test -n "$cdup" && cd "$cdup"
No cd
is done for the first edge case.
If it is acceptable to run cd .
for the first edge case, then the conditional can be done in the expansion of the parameter:
cdup="$(git rev-parse --show-cdup)" && cd "${cdup:-.}"
SELECT SUBSTRING('[email protected]',1,(CHARINDEX('@','[email protected]')-1)) Before, RIGHT('[email protected]',(CHARINDEX('@','[email protected]')+1)) After
Short & Sweet:
/**
* Get a diff between two dates
*
* @param oldDate the old date
* @param newDate the new date
* @return the diff value, in the days
*/
public static long getDateDiff(SimpleDateFormat format, String oldDate, String newDate) {
try {
return TimeUnit.DAYS.convert(format.parse(newDate).getTime() - format.parse(oldDate).getTime(), TimeUnit.MILLISECONDS);
} catch (Exception e) {
e.printStackTrace();
return 0;
}
}
Usage:
int dateDifference = (int) getDateDiff(new SimpleDateFormat("dd/MM/yyyy"), "29/05/2017", "31/05/2017");
System.out.println("dateDifference: " + dateDifference);
Output:
dateDifference: 2
Kotlin Version:
@ExperimentalTime
fun getDateDiff(format: SimpleDateFormat, oldDate: String, newDate: String): Long {
return try {
DurationUnit.DAYS.convert(
format.parse(newDate).time - format.parse(oldDate).time,
DurationUnit.MILLISECONDS
)
} catch (e: Exception) {
e.printStackTrace()
0
}
}
If your compiler supports (at least part of) C++11 you could do something like:
for (auto& t : myMap)
std::cout << t.first << " "
<< t.second.first << " "
<< t.second.second << "\n";
For C++03 I'd use std::copy
with an insertion operator instead:
typedef std::pair<string, std::pair<string, string> > T;
std::ostream &operator<<(std::ostream &os, T const &t) {
return os << t.first << " " << t.second.first << " " << t.second.second;
}
// ...
std:copy(myMap.begin(), myMap.end(), std::ostream_iterator<T>(std::cout, "\n"));
The other answers are not working for me - they may be outdated. This is what I used as my solution for auto setting an attribute:
/**
* The "booting" method of the model.
*
* @return void
*/
protected static function boot()
{
parent::boot();
// auto-sets values on creation
static::creating(function ($query) {
$query->is_voicemail = $query->is_voicemail ?? true;
});
}
Note that if you use LIKE
to determine if a string is a substring of another string, you must escape the pattern matching characters in your search string.
If your SQL dialect supports CHARINDEX
, it's a lot easier to use it instead:
SELECT * FROM MyTable
WHERE CHARINDEX('word1', Column1) > 0
AND CHARINDEX('word2', Column1) > 0
AND CHARINDEX('word3', Column1) > 0
Also, please keep in mind that this and the method in the accepted answer only cover substring matching rather than word matching. So, for example, the string 'word1word2word3'
would still match.
Yes, this is possible and I would like to provide a slight alternative to Rajeev's answer that does not pass a php-generated datetime formatted string to the query.
The important distinction about how to declare the values to be SET in the UPDATE query is that they must not be quoted as literal strings.
To prevent CodeIgniter from doing this "favor" automatically, use the set()
method with a third parameter of false
.
$userId = 444;
$this->db->set('Last', 'Current', false);
$this->db->set('Current', 'NOW()', false);
$this->db->where('Id', $userId);
// return $this->db->get_compiled_update('Login'); // uncomment to see the rendered query
$this->db->update('Login');
return $this->db->affected_rows(); // this is expected to return the integer: 1
The generated query (depending on your database adapter) would be like this:
UPDATE `Login` SET Last = Current, Current = NOW() WHERE `Id` = 444
Demonstrated proof that the query works: https://www.db-fiddle.com/f/vcc6PfMcYhDD87wZE5gBtw/0
In this case, Last
and Current
ARE MySQL Keywords, but they are not Reserved Keywords, so they don't need to be backtick-wrapped.
If your precise query needs to have properly quoted identifiers (table/column names), then there is always protectIdentifiers().
The Doc of the npm defines that only tag/version can be specified after repo_url.
Here is the Doc: https://docs.npmjs.com/cli/install
Get today's date (& time) and apply them as maximum date.
Calendar c = Calendar.getInstance();
c.set(2017, 0, 1);//Year,Mounth -1,Day
your_date_picker.setMaxDate(c.getTimeInMillis());
ALSO WE MAY DO THIS (check this Stackoverflow answer for System.currentTimeMillis() vs Calendar method)
long now = System.currentTimeMillis() - 1000;
dp_time.setMinDate(now);
dp_time.setMaxDate(now+(1000*60*60*24*7)); //After 7 Days from Now
DO NOT have a wrapper that creates a new instance of HttpClient. If you do that, you will run out of sockets at runtime (even though you are disposing the HttpClient object).
If using MOQ, the correct way to do this is to add using Moq.Protected;
to your test and then write code like the following:
var response = new HttpResponseMessage(HttpStatusCode.OK)
{
Content = new StringContent("It worked!")
};
var mockHttpMessageHandler = new Mock<HttpMessageHandler>();
mockHttpMessageHandler
.Protected()
.Setup<Task<HttpResponseMessage>>(
"SendAsync",
ItExpr.IsAny<HttpRequestMessage>(),
ItExpr.IsAny<CancellationToken>())
.ReturnsAsync(() => response);
var httpClient = new HttpClient(mockHttpMessageHandler.Object);
best to use crypt for password storing in DB
example code :
$crypted_pass = crypt($password);
//$pass_from_login is the user entered password
//$crypted_pass is the encryption
if(crypt($pass_from_login,$crypted_pass)) == $crypted_pass)
{
echo("hello user!")
}
documentation :
Download libeay32.dll and ssleay32.dll binary package for 32Bit and 64Bit from http://indy.fulgan.com/SSL/ then put it into executable or System32 directory.
I use if (ptr)
, but this is completely not worth arguing about.
I like my way because it's concise, though others say == NULL
makes it easier to read and more explicit. I see where they're coming from, I just disagree the extra stuff makes it any easier. (I hate the macro, so I'm biased.) Up to you.
I disagree with your argument. If you're not getting warnings for assignments in a conditional, you need to turn your warning levels up. Simple as that. (And for the love of all that is good, don't switch them around.)
Note in C++0x, we can do if (ptr == nullptr)
, which to me does read nicer. (Again, I hate the macro. But nullptr
is nice.) I still do if (ptr)
, though, just because it's what I'm used to.
We were having similar issues with Font Awesome on a static "cookie-less" domain when reading fonts from the "cookie domain" (www.domain.tld) and this post was our hero. See here: How can I fix the 'Missing Cross-Origin Resource Sharing (CORS) Response Header' webfont issue?
For the copy/paste-r types (and to give some props) I pieced this together from all the contributions and added it to the top of the .htaccess file of the site root:
<IfModule mod_headers.c>
<IfModule mod_rewrite.c>
SetEnvIf Origin "http(s)?://(.+\.)?(othersite\.com|mywebsite\.com)(:\d{1,5})?$" CORS=$0
Header set Access-Control-Allow-Origin "%{CORS}e" env=CORS
Header merge Vary "Origin"
</IfModule>
</IfModule>
Super Secure, Super Elegant. Love it: You don't have to open up your servers bandwidth to resource thieves / hot-link-er types.
Props to:@Noyo @DaveRandom @pratap-koritala
(I tried to leave this as a comment to the accepted answer, but I can't do that yet)
In my experience, working with Firebase is a huge advantage if you are trying to do user management, database, messaging sort of app since all of these features are already well integrated.
Like others have said, if you're just focused on the database/querying aspect, stick to mongo.
You are passing floats to a classifier which expects categorical values as the target vector. If you convert it to int
it will be accepted as input (although it will be questionable if that's the right way to do it).
It would be better to convert your training scores by using scikit's labelEncoder
function.
The same is true for your DecisionTree and KNeighbors qualifier.
from sklearn import preprocessing
from sklearn import utils
lab_enc = preprocessing.LabelEncoder()
encoded = lab_enc.fit_transform(trainingScores)
>>> array([1, 3, 2, 0], dtype=int64)
print(utils.multiclass.type_of_target(trainingScores))
>>> continuous
print(utils.multiclass.type_of_target(trainingScores.astype('int')))
>>> multiclass
print(utils.multiclass.type_of_target(encoded))
>>> multiclass
The above will not work, in my experience, before you name the root-element in the array to something, I have not been able to access anything in the final json before that.
$sth = mysql_query("SELECT ...");
$rows = array();
while($r = mysql_fetch_assoc($sth)) {
$rows['root_name'] = $r;
}
print json_encode($rows);
That should do the trick!
$(this).closest('ul').attr('id');
Here are the all keycodes.
Here is a table with some keycodes for the three platforms. It is based on a US Extended keyboard layout.
http://web.archive.org/web/20100501161453/http://www.classicteck.com/rbarticles/mackeyboard.php
Or, there is an app in the Mac App Store named "Key Codes". Download it to see the keycodes of the keys you press.
Key Codes:
https://itunes.apple.com/tr/app/key-codes/id414568915?l=tr&mt=12
Think of it like this: the List
interface has methods like add(int index, E element)
, set(int index, E element)
. The contract is that once you added an element at position X you will find it there unless you add or remove elements before it.
If any list implementation would store elements in some order other than based on the index, the above list methods would make no sense.
The best option now is to install Microsoft Visual Studio add on called Productivity Power Tools (VS 2010 version, VS 2013 version).
With this comes "Solution Navigator" (alternative to Solution Explorer, with a lot of benefits).
BTW, this feature is built-in into Visual Studio 2012.
Correlated sub queries are sub queries that depend on the outer query. It’s like a for loop in SQL. The sub-query will run once for each row in the outer query:
select * from users join widgets on widgets.id = (
select id from widgets
where widgets.user_id = users.id
order by created_at desc
limit 1
)
With /^[a-zA-Z]/
you only check the first character:
^
: Assert position at the beginning of the string[a-zA-Z]
: Match a single character present in the list below:
a-z
: A character in the range between "a" and "z"A-Z
: A character in the range between "A" and "Z"If you want to check if all characters are letters, use this instead:
/^[a-zA-Z]+$/.test(str);
^
: Assert position at the beginning of the string[a-zA-Z]
: Match a single character present in the list below:
+
: Between one and unlimited times, as many as possible, giving back as needed (greedy)a-z
: A character in the range between "a" and "z"A-Z
: A character in the range between "A" and "Z"$
: Assert position at the end of the string (or before the line break at the end of the string, if any)Or, using the case-insensitive flag i
, you could simplify it to
/^[a-z]+$/i.test(str);
Or, since you only want to test
, and not match
, you could check for the opposite, and negate it:
!/[^a-z]/i.test(str);
if you (or, someone here) are free to use lodash
utility library, it has a maxBy function which would be very handy in your case.
hence you can use as such:
_.maxBy(jsonSlice, 'y');
You are right. This has nothing to do with jQuery though.
var myArray = [];
myArray.push("foo");
// myArray now contains "foo" at index 0.
You can get just the edition (plus under individual properties) using SERVERPROPERTY
e.g.
SELECT SERVERPROPERTY('Edition')
Quote (for "Edition"):
Installed product edition of the instance of SQL Server. Use the value of this property to determine the features and the limits, such as maximum number of CPUs, that are supported by the installed product.
Returns:
'Desktop Engine' (Not available for SQL Server 2005.)
'Developer Edition'
'Enterprise Edition'
'Enterprise Evaluation Edition'
'Personal Edition'(Not available for SQL Server 2005.)
'Standard Edition'
'Express Edition'
'Express Edition with Advanced Services'
'Workgroup Edition'
'Windows Embedded SQL'
Base data type: nvarchar(128)
This can be done in 2 ways:
if (str.match(/abc|def/)) {
...
}
if (/abc|def/.test(str)) {
....
}
psql --pset=format=FORMAT
Great for executing queries from command line, e.g.
psql --pset=format=unaligned -c "select bandanavalue from bandana where bandanakey = 'atlassian.confluence.settings';"
Would something like this work:
In [7]: df.groupby('dummy').returns.agg({'func1' : lambda x: x.sum(), 'func2' : lambda x: x.prod()})
Out[7]:
func2 func1
dummy
1 -4.263768e-16 -0.188565
Based on Tim James answer and Fox32's comment, the following should check for nulls, with the assumption that two nulls are not equal.
function arrays_equal(a,b) { return !!a && !!b && !(a<b || b<a); }
> arrays_equal([1,2,3], [1,3,4])
false
> arrays_equal([1,2,3], [1,2,3])
true
> arrays_equal([1,3,4], [1,2,3])
false
> arrays_equal(null, [1,2,3])
false
> arrays_equal(null, null)
false
Update 2016-06-27: instead of using Observables, use either
A Subject is both an Observable (so we can subscribe()
to it) and an Observer (so we can call next()
on it to emit a new value). We exploit this feature. A Subject allows values to be multicast to many Observers. We don't exploit this feature (we only have one Observer).
BehaviorSubject is a variant of Subject. It has the notion of "the current value". We exploit this: whenever we create an ObservingComponent, it gets the current navigation item value from the BehaviorSubject automatically.
The code below and the plunker use BehaviorSubject.
ReplaySubject is another variant of Subject. If you want to wait until a value is actually produced, use ReplaySubject(1)
. Whereas a BehaviorSubject requires an initial value (which will be provided immediately), ReplaySubject does not. ReplaySubject will always provide the most recent value, but since it does not have a required initial value, the service can do some async operation before returning it's first value. It will still fire immediately on subsequent calls with the most recent value. If you just want one value, use first()
on the subscription. You do not have to unsubscribe if you use first()
.
import {Injectable} from '@angular/core'
import {BehaviorSubject} from 'rxjs/BehaviorSubject';
@Injectable()
export class NavService {
// Observable navItem source
private _navItemSource = new BehaviorSubject<number>(0);
// Observable navItem stream
navItem$ = this._navItemSource.asObservable();
// service command
changeNav(number) {
this._navItemSource.next(number);
}
}
import {Component} from '@angular/core';
import {NavService} from './nav.service';
import {Subscription} from 'rxjs/Subscription';
@Component({
selector: 'obs-comp',
template: `obs component, item: {{item}}`
})
export class ObservingComponent {
item: number;
subscription:Subscription;
constructor(private _navService:NavService) {}
ngOnInit() {
this.subscription = this._navService.navItem$
.subscribe(item => this.item = item)
}
ngOnDestroy() {
// prevent memory leak when component is destroyed
this.subscription.unsubscribe();
}
}
@Component({
selector: 'my-nav',
template:`
<div class="nav-item" (click)="selectedNavItem(1)">nav 1 (click me)</div>
<div class="nav-item" (click)="selectedNavItem(2)">nav 2 (click me)</div>`
})
export class Navigation {
item = 1;
constructor(private _navService:NavService) {}
selectedNavItem(item: number) {
console.log('selected nav item ' + item);
this._navService.changeNav(item);
}
}
Original answer that uses an Observable: (it requires more code and logic than using a BehaviorSubject, so I don't recommend it, but it may be instructive)
So, here's an implementation that uses an Observable instead of an EventEmitter. Unlike my EventEmitter implementation, this implementation also stores the currently selected navItem
in the service, so that when an observing component is created, it can retrieve the current value via API call navItem()
, and then be notified of changes via the navChange$
Observable.
import {Observable} from 'rxjs/Observable';
import 'rxjs/add/operator/share';
import {Observer} from 'rxjs/Observer';
export class NavService {
private _navItem = 0;
navChange$: Observable<number>;
private _observer: Observer;
constructor() {
this.navChange$ = new Observable(observer =>
this._observer = observer).share();
// share() allows multiple subscribers
}
changeNav(number) {
this._navItem = number;
this._observer.next(number);
}
navItem() {
return this._navItem;
}
}
@Component({
selector: 'obs-comp',
template: `obs component, item: {{item}}`
})
export class ObservingComponent {
item: number;
subscription: any;
constructor(private _navService:NavService) {}
ngOnInit() {
this.item = this._navService.navItem();
this.subscription = this._navService.navChange$.subscribe(
item => this.selectedNavItem(item));
}
selectedNavItem(item: number) {
this.item = item;
}
ngOnDestroy() {
this.subscription.unsubscribe();
}
}
@Component({
selector: 'my-nav',
template:`
<div class="nav-item" (click)="selectedNavItem(1)">nav 1 (click me)</div>
<div class="nav-item" (click)="selectedNavItem(2)">nav 2 (click me)</div>
`,
})
export class Navigation {
item:number;
constructor(private _navService:NavService) {}
selectedNavItem(item: number) {
console.log('selected nav item ' + item);
this._navService.changeNav(item);
}
}
See also the Component Interaction Cookbook example, which uses a Subject
in addition to observables. Although the example is "parent and children communication," the same technique is applicable for unrelated components.
Here's what I ended up using.
I'm very new to AngularJS, so would love to see better / alternative solutions.
angular.module('formComponents', [])
.directive('formInput', function() {
return {
restrict: 'E',
scope: {},
link: function(scope, element, attrs)
{
var type = attrs.type || 'text';
var required = attrs.hasOwnProperty('required') ? "required='required'" : "";
var htmlText = '<div class="control-group">' +
'<label class="control-label" for="' + attrs.formId + '">' + attrs.label + '</label>' +
'<div class="controls">' +
'<input type="' + type + '" class="input-xlarge" id="' + attrs.formId + '" name="' + attrs.formId + '" ' + required + '>' +
'</div>' +
'</div>';
element.html(htmlText);
}
}
})
Example usage:
<form-input label="Application Name" form-id="appName" required/></form-input>
<form-input type="email" label="Email address" form-id="emailAddress" required/></form-input>
<form-input type="password" label="Password" form-id="password" /></form-input>
Here is the simple bug free solution (with source code), It is working for me.
Derive your ViewModel from INotifyPropertyChanged
Create a observable property CloseDialog in ViewModel
public void Execute()
{
// Do your task here
// if task successful, assign true to CloseDialog
CloseDialog = true;
}
private bool _closeDialog;
public bool CloseDialog
{
get { return _closeDialog; }
set { _closeDialog = value; OnPropertyChanged(); }
}
public event PropertyChangedEventHandler PropertyChanged;
private void OnPropertyChanged([CallerMemberName]string property = "")
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(property));
}
}
}
Attach a Handler in View for this property change
_loginDialogViewModel = new LoginDialogViewModel();
loginPanel.DataContext = _loginDialogViewModel;
_loginDialogViewModel.PropertyChanged += OnPropertyChanged;
Now you are almost done. In the event handler make DialogResult = true
protected void OnPropertyChanged(object sender, PropertyChangedEventArgs args)
{
if (args.PropertyName == "CloseDialog")
{
DialogResult = true;
}
}
I know that this is about matplotlib
, but using pandas
and seaborn
can save you a lot of time:
df = pd.DataFrame(zip(x*3, ["y"]*3+["z"]*3+["k"]*3, y+z+k), columns=["time", "kind", "data"])
plt.figure(figsize=(10, 6))
sns.barplot(x="time", hue="kind", y="data", data=df)
plt.show()
Text nodes cannot have margins or any other style applied to them, so anything you need style applied to must be in an element. If you want some of the text inside of your element to be styled differently, wrap it in a span
or div
, for example.
After processing the POST page, redirect the user to the same page.
On
http://test.com/test.php
header('Location: http://test.com/test.php');
This will get rid of the box, as refreshing the page will not resubmit the data.
The way that I have found best - and also to show in Allure report as fail - is to try-catch the findelement and in the catch block, set the assertTrue to false, like this:
try {
element = driver.findElement(By.linkText("Test Search"));
}catch(Exception e) {
assertTrue(false, "Test Search link was not displayed");
}
When a JSF view (Facelets/JSP file) get built/restored, a JSF component tree will be produced. At that moment, the view build time, all binding
attributes are evaluated (along with id
attribtues and taghandlers like JSTL). When the JSF component needs to be created before being added to the component tree, JSF will check if the binding
attribute returns a precreated component (i.e. non-null
) and if so, then use it. If it's not precreated, then JSF will autocreate the component "the usual way" and invoke the setter behind binding
attribute with the autocreated component instance as argument.
In effects, it binds a reference of the component instance in the component tree to a scoped variable. This information is in no way visible in the generated HTML representation of the component itself. This information is in no means relevant to the generated HTML output anyway. When the form is submitted and the view is restored, the JSF component tree is just rebuilt from scratch and all binding
attributes will just be re-evaluated like described in above paragraph. After the component tree is recreated, JSF will restore the JSF view state into the component tree.
Important to know and understand is that the concrete component instances are effectively request scoped. They're newly created on every request and their properties are filled with values from JSF view state during restore view phase. So, if you bind the component to a property of a backing bean, then the backing bean should absolutely not be in a broader scope than the request scope. See also JSF 2.0 specitication chapter 3.1.5:
3.1.5 Component Bindings
...
Component bindings are often used in conjunction with JavaBeans that are dynamically instantiated via the Managed Bean Creation facility (see Section 5.8.1 “VariableResolver and the Default VariableResolver”). It is strongly recommend that application developers place managed beans that are pointed at by component binding expressions in “request” scope. This is because placing it in session or application scope would require thread-safety, since UIComponent instances depends on running inside of a single thread. There are also potentially negative impacts on memory management when placing a component binding in “session” scope.
Otherwise, component instances are shared among multiple requests, possibly resulting in "duplicate component ID" errors and "weird" behaviors because validators, converters and listeners declared in the view are re-attached to the existing component instance from previous request(s). The symptoms are clear: they are executed multiple times, one time more with each request within the same scope as the component is been bound to.
And, under heavy load (i.e. when multiple different HTTP requests (threads) access and manipulate the very same component instance at the same time), you may face sooner or later an application crash with e.g. Stuck thread at UIComponent.popComponentFromEL, or Java Threads at 100% CPU utilization using richfaces UIDataAdaptorBase and its internal HashMap, or even some "strange" IndexOutOfBoundsException
or ConcurrentModificationException
coming straight from JSF implementation source code while JSF is busy saving or restoring the view state (i.e. the stack trace indicates saveState()
or restoreState()
methods and like).
binding
on a bean property is bad practiceRegardless, using binding
this way, binding a whole component instance to a bean property, even on a request scoped bean, is in JSF 2.x a rather rare use case and generally not the best practice. It indicates a design smell. You normally declare components in the view side and bind their runtime attributes like value
, and perhaps others like styleClass
, disabled
, rendered
, etc, to normal bean properties. Then, you just manipulate exactly that bean property you want instead of grabbing the whole component and calling the setter method associated with the attribute.
In cases when a component needs to be "dynamically built" based on a static model, better is to use view build time tags like JSTL, if necessary in a tag file, instead of createComponent()
, new SomeComponent()
, getChildren().add()
and what not. See also How to refactor snippet of old JSP to some JSF equivalent?
Or, if a component needs to be "dynamically rendered" based on a dynamic model, then just use an iterator component (<ui:repeat>
, <h:dataTable>
, etc). See also How to dynamically add JSF components.
Composite components is a completely different story. It's completely legit to bind components inside a <cc:implementation>
to the backing component (i.e. the component identified by <cc:interface componentType>
. See also a.o. Split java.util.Date over two h:inputText fields representing hour and minute with f:convertDateTime and How to implement a dynamic list with a JSF 2.0 Composite Component?
binding
in local scopeHowever, sometimes you'd like to know about the state of a different component from inside a particular component, more than often in use cases related to action/value dependent validation. For that, the binding
attribute can be used, but not in combination with a bean property. You can just specify an in the local EL scope unique variable name in the binding
attribute like so binding="#{foo}"
and the component is during render response elsewhere in the same view directly as UIComponent
reference available by #{foo}
. Here are several related questions where such a solution is been used in the answer:
Use an EL expression to pass a component ID to a composite component in JSF
(and that's only from the last month...)
The following should do the trick - Only SqlServer
Alter TRIGGER Catagory_Master_Date_update ON Catagory_Master AFTER delete,Update
AS
BEGIN
SET NOCOUNT ON;
Declare @id int
DECLARE @cDate as DateTime
set @cDate =(select Getdate())
select @id=deleted.Catagory_id from deleted
print @cDate
execute dbo.psp_Update_Category @id
END
Alter PROCEDURE dbo.psp_Update_Category
@id int
AS
BEGIN
DECLARE @cDate as DateTime
set @cDate =(select Getdate())
--Update Catagory_Master Set Modify_date=''+@cDate+'' Where Catagory_ID=@id --@UserID
Insert into Catagory_Master (Catagory_id,Catagory_Name) values(12,'Testing11')
END
You can try with Directory.GetFiles and fix your pattern
string[] files = Directory.GetFiles(@"c:\", "*.txt");
foreach (string file in files)
{
File.Copy(file, "....");
}
Or Move
foreach (string file in files)
{
File.Move(file, "....");
}
I was having the similar issue of keeping all radio buttons on the same line. After trying all the things I could, nothing worked for me except the following. What I mean is simply using table resolved the issue allowing radio buttons to appear in the same line.
<table>
<tr>
<td>
<label>
@Html.RadioButton("p_sortForPatch", "byName", new { @checked = "checked", @class = "radio" }) By Name
</label>
</td>
<td>
<label>
@Html.RadioButton("p_sortForPatch", "byDate", new { @class = "radio" }) By Date
</label>
</td>
</tr>
</table>
Here it is:
s = "123"
try:
i = int(s)
except ValueError as verr:
pass # do job to handle: s does not contain anything convertible to int
except Exception as ex:
pass # do job to handle: Exception occurred while converting to int
The nohup command is a signal masking utility and catches the hangup signal. Where as ampersand doesn’t catch the hang up signals. The shell will terminate the sub command with the hang up signal when running a command using & and exiting the shell. This can be prevented by using nohup, as it catches the signal. Nohup command accept hang up signal which can be sent to a process by the kernel and block them. Nohup command is helpful in when a user wants to start long running application log out or close the window in which the process was initiated. Either of these actions normally prompts the kernel to hang up on the application, but a nohup wrapper will allow the process to continue. Using the ampersand will run the command in a child process and this child of the current bash session. When you exit the session, all of the child processes of that process will be killed. The ampersand relates to job control for the active shell. This is useful for running a process in a session in the background.
This problem arise because there is no any environmental variable corresponding to installed maven in your OS.
For fixing this problem, I always use Intellij's bundled Maven and do not install separate version of Maven again, for finding bundled Maven's path go to intellij and hit Ctrl+Alt+S
-> Build, Execution, Deployment
-> Build tool
-> Maven
-> Maven home directory
you can find the intellij's bundled maven path there as below image demonstrates.
Then go to System environment variables
and set these variables:
Variable name: MAVEN_HOME
Variable value: C:/Program Files/JetBrains/IntelliJ IDEA 2019.3.1/plugins/maven/lib/maven3
After defining system variable MAVEN_HOME
find variable path and add this line to the list
%MAVEN_HOME%\bin
Work is done, open command prompt and test it by writing mvn -v
. 99 percent of the time it work, if you're among 1 percent, you have to restart your computer.
If you want to use mvn
command from intellij's internal terminal you have to restart intellij after setting environment variables, then you shouldn't have any problem running maven command from terminal.
Another way to convert an Enum-Type to an int:
enum E
{
A = 1, /* index 0 */
B = 2, /* index 1 */
C = 4, /* index 2 */
D = 4 /* index 3, duplicate use of 4 */
}
void Main()
{
E e = E.C;
int index = Array.IndexOf(Enum.GetValues(e.GetType()), e);
// index is 2
E f = (E)(Enum.GetValues(e.GetType())).GetValue(index);
// f is E.C
}
More complex but independent from the INT values assigned to the enum values.
Even though you define android:onClick = "DoIt" in XML, you need to make sure your activity (or view context) has public method defined with exact same name and View as parameter. Android wires your definitions with this implementation in activity. At the end, implementation will have same code which you wrote in anonymous inner class. So, in simple words instead of having inner class and listener attachement in activity, you will simply have a public method with implementation code.
For all those people stuck with this problem, but still couldn't solve it: I stumbled upon the same error and found the _id
field being empty.
I described it here in more detail. Still have not found a solution except changing the fields in _id
to not-ID fields which is a dirty hack to me. I'm probably going to file a bug report for mongoose. Any help would be appreciated!
Edit: I updated my thread. I filed a ticket and they confirmed the missing _id
problem. It is going to be fixed in the 4.x.x version which has a release candidate available right now. The rc is not recommended for productive use!
You Can Also Check It:
cmd /c cd /d C:\activiti-5.9\setup & ant demo.start
Integers (int
for short) are the numbers you count with 0, 1, 2, 3 ... and their negative counterparts ... -3, -2, -1 the ones without the decimal part.
So once you introduce a decimal point, your not really dealing with integers. You're dealing with rational numbers. The Python float or decimal types are what you want to represent or approximate these numbers.
You may be used to a language that automatically does this for you(Php). Python, though, has an explicit preference for forcing code to be explicit instead implicit.
Unix
The commands env, set, and printenv display all environment variables and their values. env and set are also used to set environment variables and are often incorporated directly into the shell. printenv can also be used to print a single variable by giving that variable name as the sole argument to the command.
In Unix, the following commands can also be used, but are often dependent on a certain shell.
export VARIABLE=value # for Bourne, bash, and related shells
setenv VARIABLE value # for csh and related shells
You can have a look at this at
CSS is not used to define values to DOM element attributes, javascript would be more suitable for this.
The API doc for IllegalArgumentException
:
Thrown to indicate that a method has been passed an illegal or inappropriate argument.
From looking at how it is used in the JDK libraries, I would say:
It seems like a defensive measure to complain about obviously bad input before the input can get into the works and cause something to fail halfway through with a nonsensical error message.
It's used for cases where it would be too annoying to throw a checked exception (although it makes an appearance in the java.lang.reflect code, where concern about ridiculous levels of checked-exception-throwing is not otherwise apparent).
I would use IllegalArgumentException
to do last ditch defensive argument checking for common utilities (trying to stay consistent with the JDK usage). Or where the expectation is that a bad argument is a programmer error, similar to an NullPointerException
. I wouldn't use it to implement validation in business code. I certainly wouldn't use it for the email example.
Color red = Color.FromName("Red");
The MSDN doesn't say one way or another, so there's a good chance that it is case-sensitive. (UPDATE: Apparently, it is not.)
As far as I can tell, ColorTranslator.FromHtml
is also.
If Color.FromName
cannot find a match, it returns new Color(0,0,0);
If ColorTranslator.FromHtml
cannot find a match, it throws an exception.
UPDATE:
Since you're using Microsoft.Xna.Framework.Graphics.Color, this gets a bit tricky:
using XColor = Microsoft.Xna.Framework.Graphics.Color;
using CColor = System.Drawing.Color;
CColor clrColor = CColor.FromName("Red");
XColor xColor = new XColor(clrColor.R, clrColor.G, clrColor.B, clrColor.A);
I would expect that the JVM gracefully interrupts (thread.interrupt()
) all the running threads created by the application, at least for signals SIGINT (kill -2)
and SIGTERM (kill -15)
.
This way, the signal will be forwarded to them, allowing a gracefully thread cancellation and resource finalization in the standard ways.
But this is not the case (at least in my JVM implementation: Java(TM) SE Runtime Environment (build 1.8.0_25-b17), Java HotSpot(TM) 64-Bit Server VM (build 25.25-b02, mixed mode)
.
As other users commented, the usage of shutdown hooks seems mandatory.
So, how do I would handle it?
Well first, I do not care about it in all programs, only in those where I want to keep track of user cancellations and unexpected ends. For example, imagine that your java program is a process managed by other. You may want to differentiate whether it has been terminated gracefully (SIGTERM
from the manager process) or a shutdown has occurred (in order to relaunch automatically the job on startup).
As a basis, I always make my long-running threads periodically aware of interrupted status and throw an InterruptedException
if they interrupted. This enables execution finalization in way controlled by the developer (also producing the same outcome as standard blocking operations). Then, at the top level of the thread stack, InterruptedException
is captured and appropriate clean-up performed. These threads are coded to known how to respond to an interruption request. High cohesion design.
So, in these cases, I add a shutdown hook, that does what I think the JVM should do by default: interrupt all the non-daemon threads created by my application that are still running:
Runtime.getRuntime().addShutdownHook(new Thread() {
@Override
public void run() {
System.out.println("Interrupting threads");
Set<Thread> runningThreads = Thread.getAllStackTraces().keySet();
for (Thread th : runningThreads) {
if (th != Thread.currentThread()
&& !th.isDaemon()
&& th.getClass().getName().startsWith("org.brutusin")) {
System.out.println("Interrupting '" + th.getClass() + "' termination");
th.interrupt();
}
}
for (Thread th : runningThreads) {
try {
if (th != Thread.currentThread()
&& !th.isDaemon()
&& th.isInterrupted()) {
System.out.println("Waiting '" + th.getName() + "' termination");
th.join();
}
} catch (InterruptedException ex) {
System.out.println("Shutdown interrupted");
}
}
System.out.println("Shutdown finished");
}
});
Complete test application at github: https://github.com/idelvall/kill-test
Say you let vmware use port 443, and use another ssl port in XAMPP Apache (httpd-ssl.conf) :
The red error will keep popping in XAMPP Control Panel. You also need to change the port in the XAMPP Control Panel configuration :
In XAMPP Control Panel, click the "Config" button (top-left). Then click "Service and Port Settings". There you can set the ports to match the ports used by Apache.
The error you mean is due to missing additional include path. Try adding it with: INCLUDEPATH += C:\path\to\include\files\ Hope it works. Regards.
I hope the following code will solve your problem pretty well.
//Empty all tables' contents
$result_t = mysql_query("SHOW TABLES");
while($row = mysql_fetch_assoc($result_t))
{
mysql_query("TRUNCATE " . $row['Tables_in_' . $mysql_database]);
}
// Temporary variable, used to store current query
$templine = '';
// Read in entire file
$lines = file($filename);
// Loop through each line
foreach ($lines as $line)
{
// Skip it if it's a comment
if (substr($line, 0, 2) == '--' || $line == '')
continue;
// Add this line to the current segment
$templine .= $line;
// If it has a semicolon at the end, it's the end of the query
if (substr(trim($line), -1, 1) == ';')
{
// Perform the query
mysql_query($templine) or print('Error performing query \'<strong>' . $templine . '\': ' . mysql_error() . '<br /><br />');
// Reset temp variable to empty
$templine = '';
}
}
?>
do this:
$("tr.item").each(function(i, tr) {
var value = $("span.value", tr).text();
var quantity = $("input.quantity", tr).val();
});
You should be able to do the following:
MyFragmentClass test = (MyFragmentClass) getSupportFragmentManager().findFragmentByTag("testID");
if (test != null && test.isVisible()) {
//DO STUFF
}
else {
//Whatever
}
Here is a simple example that submits a form then dumps the result page to System.out
. Change the URL and the POST params as appropriate, of course:
import java.io.*;
import java.net.*;
import java.util.*;
class Test {
public static void main(String[] args) throws Exception {
URL url = new URL("http://example.net/new-message.php");
Map<String,Object> params = new LinkedHashMap<>();
params.put("name", "Freddie the Fish");
params.put("email", "[email protected]");
params.put("reply_to_thread", 10394);
params.put("message", "Shark attacks in Botany Bay have gotten out of control. We need more defensive dolphins to protect the schools here, but Mayor Porpoise is too busy stuffing his snout with lobsters. He's so shellfish.");
StringBuilder postData = new StringBuilder();
for (Map.Entry<String,Object> param : params.entrySet()) {
if (postData.length() != 0) postData.append('&');
postData.append(URLEncoder.encode(param.getKey(), "UTF-8"));
postData.append('=');
postData.append(URLEncoder.encode(String.valueOf(param.getValue()), "UTF-8"));
}
byte[] postDataBytes = postData.toString().getBytes("UTF-8");
HttpURLConnection conn = (HttpURLConnection)url.openConnection();
conn.setRequestMethod("POST");
conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
conn.setRequestProperty("Content-Length", String.valueOf(postDataBytes.length));
conn.setDoOutput(true);
conn.getOutputStream().write(postDataBytes);
Reader in = new BufferedReader(new InputStreamReader(conn.getInputStream(), "UTF-8"));
for (int c; (c = in.read()) >= 0;)
System.out.print((char)c);
}
}
If you want the result as a String
instead of directly printed out do:
StringBuilder sb = new StringBuilder();
for (int c; (c = in.read()) >= 0;)
sb.append((char)c);
String response = sb.toString();
An interface defines a contract for an API, that is a set of methods that both implementer and user of the API agree upon. An interface does not have an instanced implementation, hence no constructor.
The use case you describe is akin to an abstract class in which the constructor calls a method of an abstract method which is implemented in an child class.
The inherent problem here is that while the base constructor is being executed, the child object is not constructed yet, and therfore in an unpredictable state.
To summarize: is it asking for trouble when you call overloaded methods from parent constructors, to quote mindprod:
In general you must avoid calling any non-final methods in a constructor. The problem is that instance initialisers / variable initialisation in the derived class is performed after the constructor of the base class.
I've come to the conclusion the best way to get the number of jobs on a queue is to use rabbitmqctl
as has been suggested several times here. To allow any chosen user to run the command with sudo
I followed the instructions here (I did skip editing the profile part as I don't mind typing in sudo before the command.)
I also grabbed jamesc's grep
and cut
snippet and wrapped it up in subprocess calls.
from subprocess import Popen, PIPE
p1 = Popen(["sudo", "rabbitmqctl", "list_queues", "-p", "[name of your virtula host"], stdout=PIPE)
p2 = Popen(["grep", "-e", "^celery\s"], stdin=p1.stdout, stdout=PIPE)
p3 = Popen(["cut", "-f2"], stdin=p2.stdout, stdout=PIPE)
p1.stdout.close()
p2.stdout.close()
print("number of jobs on queue: %i" % int(p3.communicate()[0]))
Here is a Swift 5 solution for downloading and saving an image or in general a file to the documents directory by using Alamofire
:
func dowloadAndSaveFile(from url: URL) {
let destination: DownloadRequest.DownloadFileDestination = { _, _ in
var documentsURL = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)[0]
documentsURL.appendPathComponent(url.lastPathComponent)
return (documentsURL, [.removePreviousFile])
}
let request = SessionManager.default.download(url, method: .get, to: destination)
request.validate().responseData { response in
switch response.result {
case .success:
if let destinationURL = response.destinationURL {
print(destinationURL)
}
case .failure(let error):
print(error.localizedDescription)
}
}
}
There is a property of the built-in window.location
object that will provide that for the current window.
// If URL is http://www.somedomain.com/account/search?filter=a#top
window.location.pathname // /account/search
// For reference:
window.location.host // www.somedomain.com (includes port if there is one)
window.location.hostname // www.somedomain.com
window.location.hash // #top
window.location.href // http://www.somedomain.com/account/search?filter=a#top
window.location.port // (empty string)
window.location.protocol // http:
window.location.search // ?filter=a
It turns out that this schema is being standardized as an interface called URLUtils, and guess what? Both the existing window.location
object and anchor elements implement the interface.
So you can use the same properties above for any URL — just create an anchor with the URL and access the properties:
var el = document.createElement('a');
el.href = "http://www.somedomain.com/account/search?filter=a#top";
el.host // www.somedomain.com (includes port if there is one[1])
el.hostname // www.somedomain.com
el.hash // #top
el.href // http://www.somedomain.com/account/search?filter=a#top
el.pathname // /account/search
el.port // (port if there is one[1])
el.protocol // http:
el.search // ?filter=a
[1]: Browser support for the properties that include port is not consistent, See: http://jessepollak.me/chrome-was-wrong-ie-was-right
This works in the latest versions of Chrome and Firefox. I do not have versions of Internet Explorer to test, so please test yourself with the JSFiddle example.
There's also a coming URL
object that will offer this support for URLs themselves, without the anchor element. Looks like no stable browsers support it at this time, but it is said to be coming in Firefox 26. When you think you might have support for it, try it out here.
Adding into this: it depends on what your array is defined as. Consider:
dim a() as integer
dim b() as string
dim c() as variant
'these doesn't work
if isempty(a) then msgbox "integer arrays can be empty"
if isempty(b) then msgbox "string arrays can be empty"
'this is because isempty can only be tested on classes which have an .empty property
'this do work
if isempty(c) then msgbox "variants can be empty"
So, what can we do? In VBA, we can see if we can trigger an error and somehow handle it, for example
dim a() as integer
dim bEmpty as boolean
bempty=false
on error resume next
bempty=not isnumeric(ubound(a))
on error goto 0
But this is really clumsy... A nicer solution is to declare a boolean variable (a public or module level is best). When the array is first initialised, then set this variable. Because it's a variable declared at the same time, if it loses it's value, then you know that you need to reinitialise your array. However, if it is initialised, then all you're doing is checking the value of a boolean, which is low cost. It depends on whether being low cost matters, and if you're going to be needing to check it often.
option explicit
'declared at module level
dim a() as integer
dim aInitialised as boolean
sub DoSomethingWithA()
if not aInitialised then InitialiseA
'you can now proceed confident that a() is intialised
end sub
sub InitialiseA()
'insert code to do whatever is required to initialise A
'e.g.
redim a(10)
a(1)=123
'...
aInitialised=true
end sub
The last thing you can do is create a function; which in this case will need to be dependent on the clumsy on error method.
function isInitialised(byref a() as variant) as boolean
isInitialised=false
on error resume next
isinitialised=isnumeric(ubound(a))
end function
This isn't necessarily exhaustive.
options = {...optionsDefault, ...options};
If authoring code for execution in environments without native support, you may be able to just compile this syntax (as opposed to using a polyfill). (With Babel, for example.)
Less verbose.
When this answer was originally written, this was a proposal, not standardized. When using proposals consider what you'd do if you write code with it now and it doesn't get standardized or changes as it moves toward standardization. This has since been standardized in ES2018.
Literal, not dynamic.
Object.assign()
options = Object.assign({}, optionsDefault, options);
Standardized.
Dynamic. Example:
var sources = [{a: "A"}, {b: "B"}, {c: "C"}];
options = Object.assign.apply(Object, [{}].concat(sources));
// or
options = Object.assign({}, ...sources);
This is the commit that made me wonder.
That's not directly related to what you're asking. That code wasn't using Object.assign()
, it was using user code (object-assign
) that does the same thing. They appear to be compiling that code with Babel (and bundling it with Webpack), which is what I was talking about: the syntax you can just compile. They apparently preferred that to having to include object-assign
as a dependency that would go into their build.
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