return b();
calls the function b(), and returns its result.
return b;
returns a reference to the function b, which you can store in a variable to call later.
With jQuery :
jQuery("#btn").on("click",function(event){
event.preventDefault();
pay();
cls();
});
7-Zip should do the trick.
With it, you can extract all the files inside the EXE (thus, also an MSI file).
Although you can do it with 7-Zip, the better way is the administrative installation as pointed out by Stein Åsmul.
This is a question with a simple answer and a long-winded answer.
The simple answer is the heap. Classes and all of the data applying to classes (not instance data) is stored in the Permanent Generation section of the heap.
The long answer is already on stack overflow:
There is a thorough description of memory and garbage collection in the JVM as well as an answer that talks more concisely about it.
I had the same issue where a private value was not set because Mockito does not call super constructors. Here is how I augment mocking with reflection.
First, I created a TestUtils class that contains many helpful utils including these reflection methods. Reflection access is a bit wonky to implement each time. I created these methods to test code on projects that, for one reason or another, had no mocking package and I was not invited to include it.
public class TestUtils {
// get a static class value
public static Object reflectValue(Class<?> classToReflect, String fieldNameValueToFetch) {
try {
Field reflectField = reflectField(classToReflect, fieldNameValueToFetch);
reflectField.setAccessible(true);
Object reflectValue = reflectField.get(classToReflect);
return reflectValue;
} catch (Exception e) {
fail("Failed to reflect "+fieldNameValueToFetch);
}
return null;
}
// get an instance value
public static Object reflectValue(Object objToReflect, String fieldNameValueToFetch) {
try {
Field reflectField = reflectField(objToReflect.getClass(), fieldNameValueToFetch);
Object reflectValue = reflectField.get(objToReflect);
return reflectValue;
} catch (Exception e) {
fail("Failed to reflect "+fieldNameValueToFetch);
}
return null;
}
// find a field in the class tree
public static Field reflectField(Class<?> classToReflect, String fieldNameValueToFetch) {
try {
Field reflectField = null;
Class<?> classForReflect = classToReflect;
do {
try {
reflectField = classForReflect.getDeclaredField(fieldNameValueToFetch);
} catch (NoSuchFieldException e) {
classForReflect = classForReflect.getSuperclass();
}
} while (reflectField==null || classForReflect==null);
reflectField.setAccessible(true);
return reflectField;
} catch (Exception e) {
fail("Failed to reflect "+fieldNameValueToFetch +" from "+ classToReflect);
}
return null;
}
// set a value with no setter
public static void refectSetValue(Object objToReflect, String fieldNameToSet, Object valueToSet) {
try {
Field reflectField = reflectField(objToReflect.getClass(), fieldNameToSet);
reflectField.set(objToReflect, valueToSet);
} catch (Exception e) {
fail("Failed to reflectively set "+ fieldNameToSet +"="+ valueToSet);
}
}
}
Then I can test the class with a private variable like this. This is useful for mocking deep in class trees that you have no control as well.
@Test
public void testWithRectiveMock() throws Exception {
// mock the base class using Mockito
ClassToMock mock = Mockito.mock(ClassToMock.class);
TestUtils.refectSetValue(mock, "privateVariable", "newValue");
// and this does not prevent normal mocking
Mockito.when(mock.somthingElse()).thenReturn("anotherThing");
// ... then do your asserts
}
I modified my code from my actual project here, in page. There could be a compile issue or two. I think you get the general idea. Feel free to grab the code and use it if you find it useful.
That data looks like it is in JSON format.
You can use this JSON implementation for Ruby to extract it.
Working with floats is bit messy:
This as many other 'trivial' layout tricks can be done with flexbox.
div.container {
display: flex;
justify-content: space-between;
}
In 2017 I think this is preferred solution (over float) if you don't have to support legacy browsers: https://caniuse.com/#feat=flexbox
Check fiddle how different float usages compares to flexbox ("may include some competing answers"): https://jsfiddle.net/b244s19k/25/. If you still need to stick with float I recommended third version of course.
For nearly all programming purposes, VBA and VB 6.0 are the same thing.
VBA cannot compile your program into an executable binary. You'll always need the host (a Word file and MS Word, for example) to contain and execute your project. You'll also not be able to create COM DLLs with VBA.
Apart from that, there is a difference in the IDE - the VB 6.0 IDE is more powerful in comparison. On the other hand, you have tight integration of the host application in VBA. Application-global objects (like "ActiveDocument") and events are available without declaration, so application-specific programming is straight-forward.
Still, nothing keeps you from firing up Word, loading the VBA IDE and solving a problem that has no relation to Word whatsoever. I'm not sure if there is anything that VB 6.0 can do (technically), and VBA cannot. I'm looking for a comparison sheet on the MSDN though.
Why not use a media query range.
I'm currently working on a responsive layout for my employer and the ranges I'm using are as follows:
You have your main desktop styles in the body of the CSS file (1024px and above) and then for specific screen sizes I'm using:
@media all and (min-width:960px) and (max-width: 1024px) {
/* put your css styles in here */
}
@media all and (min-width:801px) and (max-width: 959px) {
/* put your css styles in here */
}
@media all and (min-width:769px) and (max-width: 800px) {
/* put your css styles in here */
}
@media all and (min-width:569px) and (max-width: 768px) {
/* put your css styles in here */
}
@media all and (min-width:481px) and (max-width: 568px) {
/* put your css styles in here */
}
@media all and (min-width:321px) and (max-width: 480px) {
/* put your css styles in here */
}
@media all and (min-width:0px) and (max-width: 320px) {
/* put your css styles in here */
}
This will cover pretty much all devices being used - I would concentrate on getting the styling correct for the sizes at the end of the range (i.e. 320, 480, 568, 768, 800, 1024) as for all the others they will just be responsive to the size available.
Also, don't use px anywhere - use em's or %.
use checked
: true, false property of the checkbox.
jQuery:
if($('input[type=checkbox]').is(':checked')) {
$(this).prop('checked',true);
} else {
$(this).prop('checked',false);
}
Here's one way that I found to do it. I don't know if there are better ways, or what the trade-offs are.
Container "tries to be as big as possible", according to https://flutter.io/layout/. Also, Container can take a decoration
, which can be a BoxDecoration, which can have a color
(which, is the background color).
Here's a sample that does indeed fill the screen with red, and puts "Hello, World!" into the center:
import 'package:flutter/material.dart';
void main() {
runApp(new MyApp());
}
class MyApp extends StatelessWidget {
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
return new Container(
decoration: new BoxDecoration(color: Colors.red),
child: new Center(
child: new Text("Hello, World!"),
),
);
}
}
Note, the Container is returned by the MyApp build(). The Container has a decoration and a child, which is the centered text.
See it in action here:
answer
shouldn't be a pointer, the intent is obviously to hold a character. scanf
takes the address of this character, so it should be called as
char answer;
scanf(" %c", &answer);
Next, your "or" statement is formed incorrectly.
if (answer == 'Y' || answer == 'y')
What you wrote originally asks to compare answer
with the result of 'Y' || 'y'
, which I'm guessing isn't quite what you wanted to do.
best and simple way to use native java Script which is one liner code.
document.querySelector('#id').click();
Just add 'id' to your html element like
<button id="myId1" ng-click="someFunction()"></button>
check condition in javascript code
if(condition) {
document.querySelector('#myId1').click();
}
Try executing vmware as administrator
Nude.js based on the whitepaper by Rigan Ap-apid from De La Salle University.
As karim79 mentioned, the first is the most concise. However I could argue that the second is more understandable as it is not obvious/known to some Javascript/jQuery programmers that non-zero/false values are evaluated to true
in if-statements. And because of that, the third method is incorrect.
There is also some more detail on the use of <mvc:annotation-driven />
in the Spring docs. In a nutshell, <mvc:annotation-driven />
gives you greater control over the inner workings of Spring MVC. You don't need to use it unless you need one or more of the features outlined in the aforementioned section of the docs.
Also, there are other "annotation-driven" tags available to provide additional functionality in other Spring modules. For example, <transaction:annotation-driven />
enables the use of the @Transaction annotation, <task:annotation-driven />
is required for @Scheduled et al...
For Excel 2010 it should be UTF-8. Instruction by MS :
http://msdn.microsoft.com/en-us/library/bb507946:
"The basic document structure of a SpreadsheetML document consists of the Sheets and Sheet elements, which reference the worksheets in the Workbook. A separate XML file is created for each Worksheet. For example, the SpreadsheetML for a workbook that has two worksheets name MySheet1 and MySheet2 is located in the Workbook.xml file and is shown in the following code example.
<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
<workbook xmlns=http://schemas.openxmlformats.org/spreadsheetml/2006/main xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships">
<sheets>
<sheet name="MySheet1" sheetId="1" r:id="rId1" />
<sheet name="MySheet2" sheetId="2" r:id="rId2" />
</sheets>
</workbook>
The worksheet XML files contain one or more block level elements such as SheetData. sheetData represents the cell table and contains one or more Row elements. A row contains one or more Cell elements. Each cell contains a CellValue element that represents the value of the cell. For example, the SpreadsheetML for the first worksheet in a workbook, that only has the value 100 in cell A1, is located in the Sheet1.xml file and is shown in the following code example.
<?xml version="1.0" encoding="UTF-8" ?>
<worksheet xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main">
<sheetData>
<row r="1">
<c r="A1">
<v>100</v>
</c>
</row>
</sheetData>
</worksheet>
"
Detection of cell encodings:
You have to disable all triggers
and constraints
first.
EXEC sp_MSforeachtable @command1="ALTER TABLE ? NOCHECK CONSTRAINT ALL"
EXEC sp_MSforeachtable @command1="ALTER TABLE ? DISABLE TRIGGER ALL"
After that you can generate the scripts for deleting the objects as
SELECT 'Drop Table '+name FROM sys.tables WHERE type='U';
SELECT 'Drop Procedure '+name FROM sys.procedures WHERE type='P';
Execute the statements generated.
random.uniform(a, b)
appears to be what your looking for. From the docs:
Return a random floating point number N such that a <= N <= b for a <= b and b <= N <= a for b < a.
See here.
Dispatcher.ShutdownStarted
event is fired only at the end of application. It's worth to call the disposing logic just when control gets out of use. In particular it frees resources when control is used many times during application runtime. So ioWint's solution is preferable. Here's the code:
public MyWpfControl()
{
InitializeComponent();
Loaded += (s, e) => { // only at this point the control is ready
Window.GetWindow(this) // get the parent window
.Closing += (s1, e1) => Somewhere(); //disposing logic here
};
}
See InnerFade.
<script type="text/javascript">
$(document).ready(
function() {
$('#portfolio').innerfade({
speed: 'slow',
timeout: 10000,
type: 'sequence',
containerheight: '220px'
});
});
</script>
<ul id="portfolio">
<li>
<a href="http://medienfreunde.com/deutsch/referenzen/kreation/good_guy__bad_guy.html">
<img src="images/ggbg.gif" alt="Good Guy bad Guy" />
</a>
</li>
<li>
<a href="http://medienfreunde.com/deutsch/referenzen/kreation/whizzkids.html">
<img src="images/whizzkids.gif" alt="Whizzkids" />
</a>
</li>
<li>
<a href="http://medienfreunde.com/deutsch/referenzen/printdesign/koenigin_mutter.html">
<img src="images/km.jpg" alt="Königin Mutter" />
</a>
</li>
<li>
<a href="http://medienfreunde.com/deutsch/referenzen/webdesign/rt_reprotechnik_-_hybride_archivierung.html">
<img src="images/rt_arch.jpg" alt="RT Hybride Archivierung" />
</a>
</li>
<li>
<a href="http://medienfreunde.com/deutsch/referenzen/kommunikation/tuev_sued_gruppe.html">
<img src="images/tuev.jpg" alt="TÜV SÜD Gruppe" />
</a>
</li>
</ul>
An SMS Push is a message to tell the terminal to initiate the session. This happens because you can't initiate an IP session simply because you don't know the IP Adress of the mobile terminal. Mostly used to send a few lines of data to end recipient, to the effect of sending information, or reminding of events.
WAP Push is an SMS within the header of which is included a link to a WAP address. On receiving a WAP Push, the compatible mobile handset automatically gives the user the option to access the WAP content on his handset. The WAP Push directs the end-user to a WAP address where content is stored ready for viewing or downloading onto the handset. This wap address may be a page or a WAP site.
The user may “take action” by using a developer-defined soft-key to immediately activate an application to accomplish a specific task, such as downloading a picture, making a purchase, or responding to a marketing offer.
Should you need to do a case insensitive search for a string in a pandas dataframe column:
df[df['A'].str.contains("hello", case=False)]
The method binascii.hexlify()
will convert bytes
to a bytes
representing the ascii hex string. That means that each byte in the input will get converted to two ascii characters. If you want a true str
out then you can .decode("ascii")
the result.
I included an snippet that illustrates it.
import binascii
with open("addressbook.bin", "rb") as f: # or any binary file like '/bin/ls'
in_bytes = f.read()
print(in_bytes) # b'\n\x16\n\x04'
hex_bytes = binascii.hexlify(in_bytes)
print(hex_bytes) # b'0a160a04' which is twice as long as in_bytes
hex_str = hex_bytes.decode("ascii")
print(hex_str) # 0a160a04
from the hex string "0a160a04"
to can come back to the bytes
with binascii.unhexlify("0a160a04")
which gives back b'\n\x16\n\x04'
This is quite simple:
Here's a working version of your code:
(async function(){
var response = await superagent.get('...')
console.log(response)
})()
convert(varchar(34), HASHBYTES('MD5','Hello World'),1)
(1 for converting hexadecimal to string)
convert this to lower and remove 0x from the start of the string by substring:
substring(lower(convert(varchar(34), HASHBYTES('MD5','Hello World'),1)),3,32)
exactly the same as what we get in C# after converting bytes to string
According to the stack trace, your issue is that your app cannot find org.apache.commons.dbcp.BasicDataSource
, as per this line:
java.lang.ClassNotFoundException: org.apache.commons.dbcp.BasicDataSource
I see that you have commons-dbcp in your list of jars, but for whatever reason, your app is not finding the BasicDataSource
class in it.
Another example is available here:
Sending a JSON to server and retrieving a JSON in return, without JQuery
Which is the same as jans answer, but also checks the servers response by setting a onreadystatechange callback on the XMLHttpRequest.
I'm Using the fix, Because Using Knockout in MVC5 views.
On action
return Json(ModelHelper.GetJsonModel<Core_User>(viewModel));
function
public static TEntity GetJsonModel<TEntity>(TEntity Entity) where TEntity : class
{
TEntity Entity_ = Activator.CreateInstance(typeof(TEntity)) as TEntity;
foreach (var item in Entity.GetType().GetProperties())
{
if (item.PropertyType.ToString().IndexOf("Generic.ICollection") == -1 && item.PropertyType.ToString().IndexOf("SaymenCore.DAL.") == -1)
item.SetValue(Entity_, Entity.GetPropValue(item.Name));
}
return Entity_;
}
To get the currently logged in user:
System.getProperty("user.name"); //platform independent
and the hostname of the machine:
java.net.InetAddress localMachine = java.net.InetAddress.getLocalHost();
System.out.println("Hostname of local machine: " + localMachine.getHostName());
Just add <br>
where you would like to make the new line.
$S$: a set of shops
<br>
$I$: a set of items M wants to get
Because jupyter notebook markdown cell is a superset of HTML.
http://jupyter-notebook.readthedocs.io/en/latest/examples/Notebook/Working%20With%20Markdown%20Cells.html
Note that newlines using <br>
does not persist when exporting or saving the notebook to a pdf (using "Download as > PDF via LaTeX"). It is probably treating each <br>
as a space.
Wow, surprised there are so many overkill answers here...
<div class="firstClass" onclick="this.className='secondClass'">
I suggest you use null to represent a null value.
What is the exception you get?
BTW:
There is no year called 0 or 0000. (Though some dates allow this year)
And there is no 0 month of the year or 0 day of the month. (Which may be the cause of your problem)
if you want same string output then try below else use without double quotes for proper output
$str = '20130814';
echo date('"F Y"', strtotime($str));
//output : "August 2013"
Transaction counter
--@@TRANCOUNT = 0
begin try
--@@TRANCOUNT = 0
BEGIN TRANSACTION tran1
--@@TRANCOUNT = 1
--your code
-- if failed @@TRANCOUNT = 1
-- if success @@TRANCOUNT = 0
COMMIT TRANSACTION tran1
end try
begin catch
print 'FAILED'
end catch
You can easily convert miliseconds into seconds, minutes and hours.
val millis = **milliSecondsYouWantToConvert**
val seconds = (millis / 1000) % 60
val minutes = ((millis / 1000) / 60) % 60
val hours = ((millis / 1000) / 60) / 60
println("--------------------------------------------------------------------")
println(String.format("%02dh : %02dm : %02ds remaining", hours, minutes, seconds))
println("--------------------------------------------------------------------")
**RESULT :**
--------------------------------------------------------------------
01h : 23m : 37s remaining
--------------------------------------------------------------------
The best way around this would be to create an Excel called 'launcher.xlsm' in the same folder as the file you wish to open. In the 'launcher' file put the following code in the 'Workbook' object, but set the constant TargetWBName
to be the name of the file you wish to open.
Private Const TargetWBName As String = "myworkbook.xlsx"
'// First, a function to tell us if the workbook is already open...
Function WorkbookOpen(WorkBookName As String) As Boolean
' returns TRUE if the workbook is open
WorkbookOpen = False
On Error GoTo WorkBookNotOpen
If Len(Application.Workbooks(WorkBookName).Name) > 0 Then
WorkbookOpen = True
Exit Function
End If
WorkBookNotOpen:
End Function
Private Sub Workbook_Open()
'Check if our target workbook is open
If WorkbookOpen(TargetWBName) = False Then
'set calculation to manual
Application.Calculation = xlCalculationManual
Workbooks.Open ThisWorkbook.Path & "\" & TargetWBName
DoEvents
Me.Close False
End If
End Sub
Set the constant 'TargetWBName' to be the name of the workbook that you wish to open.
This code will simply switch calculation to manual, then open the file. The launcher file will then automatically close itself.
*NOTE: If you do not wish to be prompted to 'Enable Content' every time you open this file (depending on your security settings) you should temporarily remove the 'me.close' to prevent it from closing itself, save the file and set it to be trusted, and then re-enable the 'me.close' call before saving again. Alternatively, you could just set the False to True
after Me.Close
I don't think you have to check if file exists or not, fs.unlink
will check it for you.
fs.unlink('fileToBeRemoved', function(err) {
if(err && err.code == 'ENOENT') {
// file doens't exist
console.info("File doesn't exist, won't remove it.");
} else if (err) {
// other errors, e.g. maybe we don't have enough permission
console.error("Error occurred while trying to remove file");
} else {
console.info(`removed`);
}
});
replicate
is another option:
replicate(10, 0)
# [1] 0 0 0 0 0 0 0 0 0 0
replicate(5, 1)
# [1] 1 1 1 1 1
To create a matrix:
replicate( 5, numeric(3) )
# [,1] [,2] [,3] [,4] [,5]
#[1,] 0 0 0 0 0
#[2,] 0 0 0 0 0
#[3,] 0 0 0 0 0
Dim sFileName As String
Dim iFileNum As Integer
Dim sBuf As String
Dim Fields as String
Dim TempStr as String
sFileName = "c:\fields.ini"
''//Does the file exist?
If Len(Dir$(sFileName)) = 0 Then
MsgBox ("Cannot find fields.ini")
End If
iFileNum = FreeFile()
Open sFileName For Input As iFileNum
''//This part skips the first two lines
if not(EOF(iFileNum)) Then Line Input #iFilenum, TempStr
if not(EOF(iFileNum)) Then Line Input #iFilenum, TempStr
Do While Not EOF(iFileNum)
Line Input #iFileNum, Fields
MsgBox (Fields)
Loop
Oracle syntax from the 11g Documentation:
CASE { simple_case_expression | searched_case_expression }
[ else_clause ]
END
simple_case_expression
expr { WHEN comparison_expr THEN return_expr }...
searched_case_expression
{ WHEN condition THEN return_expr }...
else_clause
ELSE else_expr
Yes I think You can get it download and separately its Help files from: vbdecompiler.org Site. and there is a Video on YouTube which explains how to Use it to Get the Code from an exe file and Save it. I hope that I helped.
The answer from @gunn is correct, target="_blank
makes the link open in a new tab.
But this can be a security risk for you page; you can read about it here. There is a simple solution for that: adding rel="noopener noreferrer"
.
<a style={{display: "table-cell"}} href = "someLink" target = "_blank"
rel = "noopener noreferrer">text</a>
You should try this syntax - assuming you want to have @OrderID
as a parameter for your stored procedure:
CREATE PROCEDURE dbo.YourStoredProcNameHere
@OrderID INT
AS
BEGIN
DECLARE @OrderItemID AS INT
DECLARE @AppointmentID AS INT
DECLARE @PurchaseOrderID AS INT
DECLARE @PurchaseOrderItemID AS INT
DECLARE @SalesOrderID AS INT
DECLARE @SalesOrderItemID AS INT
SELECT @OrderItemID = OrderItemID
FROM [OrderItem]
WHERE OrderID = @OrderID
SELECT @AppointmentID = AppoinmentID
FROM [Appointment]
WHERE OrderID = @OrderID
SELECT @PurchaseOrderID = PurchaseOrderID
FROM [PurchaseOrder]
WHERE OrderID = @OrderID
END
OF course, that only works if you're returning exactly one value (not multiple values!)
HTTP sends bytes. If the resource in question is text, the character encoding is normally specified, either by the Content-Type HTTP header or by another mechanism (an RFC, HTML meta http-equiv
,...).
urllib
should know how to encode the bytes to a string, but it's too naïve—it's a horribly underpowered and un-Pythonic library.
Dive Into Python 3 provides an overview about the situation.
Your "work-around" is fine—although it feels wrong, it's the correct way to do it.
You could use Java reflection to do this. The method would be represented as an instance of java.lang.reflect.Method.
import java.lang.reflect.Method;
public class Demo {
public static void main(String[] args) throws Exception{
Class[] parameterTypes = new Class[1];
parameterTypes[0] = String.class;
Method method1 = Demo.class.getMethod("method1", parameterTypes);
Demo demo = new Demo();
demo.method2(demo, method1, "Hello World");
}
public void method1(String message) {
System.out.println(message);
}
public void method2(Object object, Method method, String message) throws Exception {
Object[] parameters = new Object[1];
parameters[0] = message;
method.invoke(object, parameters);
}
}
Imagine it this way: a mail truck can carry 5000 sheets of paper each trip so It's bandwidth is 5000. Does that mean it can carry 5000 letter each trip? Well, theoretically, if each letter didn't need an envelope telling us where it was coming from, going too, and possessing proof of payment (Envelope = Protocol Headers and Footers). But they do, so each letter (1 sheet of paper) requires an envelope (= to about 1 sheet of paper) to get it to it's destination. So in the worst case scenario (all envelopes only have one page letters), the truck would carry only 2500 sheets Throughput (Data that we want to send from source>destination, THE LETTERS) and would have 2500 sheets Overhead (Headers/Footer that we need to get the letter from source>destination but that the recipient won't be reading, THE ENVELOPES). The Throughput, 2500 Letters + the Overhead, 2500 Envelopes = Bandwidth, 5000 sheets of paper. Bigger letters (4 pages) still only require 1 envelope so that would move the ratio of Throughput to Overhead higher (i.e. Jumbo Frames) and make it more efficient, so if all the letters were 4 page letters throughput would change to 4000, and overhead would reduce to 1000, together equaling the 5000 Bandwidth of the truck.
The JSONP comes to mind:
JSONP or "JSON with padding" is a complement to the base JSON data format, a usage pattern that allows a page to request and more meaningfully use JSON from a server other than the primary server. JSONP is an alternative to a more recent method called Cross-Origin Resource Sharing.
Above users mentioned, those solutions are very basic and they won't work if the database has different phone formats like:
(123)123-4564
123-456-4564
1234567989
etc
Here is a more complex solution that will work with ANY input given:
CREATE FUNCTION [dbo].[ufn_FormatPhone] (@PhoneNumber VARCHAR(32))
RETURNS VARCHAR(32)
AS
BEGIN
DECLARE @Phone CHAR(32)
SET @Phone = @PhoneNumber
-- cleanse phone number string
WHILE PATINDEX('%[^0-9]%', @PhoneNumber) > 0
SET @PhoneNumber = REPLACE(@PhoneNumber, SUBSTRING(@PhoneNumber, PATINDEX('%[^0-9]%', @PhoneNumber), 1), '')
-- skip foreign phones
IF (
SUBSTRING(@PhoneNumber, 1, 1) = '1'
OR SUBSTRING(@PhoneNumber, 1, 1) = '+'
OR SUBSTRING(@PhoneNumber, 1, 1) = '0'
)
AND LEN(@PhoneNumber) > 11
RETURN @Phone
-- build US standard phone number
SET @Phone = @PhoneNumber
SET @PhoneNumber = '(' + SUBSTRING(@PhoneNumber, 1, 3) + ') ' + SUBSTRING(@PhoneNumber, 4, 3) + '-' + SUBSTRING(@PhoneNumber, 7, 4)
IF LEN(@Phone) - 10 > 1
SET @PhoneNumber = @PhoneNumber + ' X' + SUBSTRING(@Phone, 11, LEN(@Phone) - 10)
RETURN @PhoneNumber
END
So, your input is 'dan|warrior|54' and you want "warrior". You do this like so:
>>> dan = 'dan|warrior|54'
>>> dan.split('|')[1]
"warrior"
You state that
2 is the height of the multi-line text box
No it's not. 2 is the distance between lines of text.
I don't think there is a real way for calculating the height of the actual resulting text box, unless you use GetY()
and then subtract the original Y value used in your SetXY()
statement for placing the Multicell in the first place.
select to_char(sysdate, 'Month') from dual
in your example will be:
select to_char(to_date('15-11-2010', 'DD-MM-YYYY'), 'Month') from dual
For HTTP things, the current choice should be: Requests- HTTP for Humans
My take on it. I propose a lazy, single-pass, partition
function,
which preserves relative order in the output subsequences.
I assume that the requirements are:
i
)filter
or groupby
)split
libraryMy partition
function (introduced below) and other similar functions
have made it into a small library:
It's installable normally via PyPI:
pip install --user split
To split a list base on condition, use partition
function:
>>> from split import partition
>>> files = [ ('file1.jpg', 33L, '.jpg'), ('file2.avi', 999L, '.avi') ]
>>> image_types = ('.jpg','.jpeg','.gif','.bmp','.png')
>>> images, other = partition(lambda f: f[-1] in image_types, files)
>>> list(images)
[('file1.jpg', 33L, '.jpg')]
>>> list(other)
[('file2.avi', 999L, '.avi')]
partition
function explainedInternally we need to build two subsequences at once, so consuming
only one output sequence will force the other one to be computed
too. And we need to keep state between user requests (store processed
but not yet requested elements). To keep state, I use two double-ended
queues (deques
):
from collections import deque
SplitSeq
class takes care of the housekeeping:
class SplitSeq:
def __init__(self, condition, sequence):
self.cond = condition
self.goods = deque([])
self.bads = deque([])
self.seq = iter(sequence)
Magic happens in its .getNext()
method. It is almost like .next()
of the iterators, but allows to specify which kind of element we want
this time. Behind the scene it doesn't discard the rejected elements,
but instead puts them in one of the two queues:
def getNext(self, getGood=True):
if getGood:
these, those, cond = self.goods, self.bads, self.cond
else:
these, those, cond = self.bads, self.goods, lambda x: not self.cond(x)
if these:
return these.popleft()
else:
while 1: # exit on StopIteration
n = self.seq.next()
if cond(n):
return n
else:
those.append(n)
The end user is supposed to use partition
function. It takes a
condition function and a sequence (just like map
or filter
), and
returns two generators. The first generator builds a subsequence of
elements for which the condition holds, the second one builds the
complementary subsequence. Iterators and generators allow for lazy
splitting of even long or infinite sequences.
def partition(condition, sequence):
cond = condition if condition else bool # evaluate as bool if condition == None
ss = SplitSeq(cond, sequence)
def goods():
while 1:
yield ss.getNext(getGood=True)
def bads():
while 1:
yield ss.getNext(getGood=False)
return goods(), bads()
I chose the test function to be the first argument to facilitate
partial application in the future (similar to how map
and filter
have the test function as the first argument).
try this one
npm cache clean --force
after that run
npm cache verify
I have tried similar issue and works fine, try it. It can handle different orientations between PDFs.
// array to hold list of PDF files to be merged
$files = array("a.pdf", "b.pdf", "c.pdf");
$pageCount = 0;
// initiate FPDI
$pdf = new FPDI();
// iterate through the files
foreach ($files AS $file) {
// get the page count
$pageCount = $pdf->setSourceFile($file);
// iterate through all pages
for ($pageNo = 1; $pageNo <= $pageCount; $pageNo++) {
// import a page
$templateId = $pdf->importPage($pageNo);
// get the size of the imported page
$size = $pdf->getTemplateSize($templateId);
// create a page (landscape or portrait depending on the imported page size)
if ($size['w'] > $size['h']) {
$pdf->AddPage('L', array($size['w'], $size['h']));
} else {
$pdf->AddPage('P', array($size['w'], $size['h']));
}
// use the imported page
$pdf->useTemplate($templateId);
$pdf->SetFont('Helvetica');
$pdf->SetXY(5, 5);
$pdf->Write(8, 'Generated by FPDI');
}
}
I would suggest you to checkout https://vlio20.github.io/angular-datepicker/
Slightly shorter version, without unnecessary second variable:
$csv = <<<'ENDLIST'
"12345","Computers","Acer","4","Varta","5.93","1","0.04","27-05-2013"
"12346","Computers","Acer","5","Decra","5.94","1","0.04","27-05-2013"
ENDLIST;
$arr = explode("\n", $csv);
foreach ($arr as &$line) {
$line = str_getcsv($line);
}
I'm just beginning to use JPype 0.5.4.2 (july 2011) and it looks like it's working nicely...
I'm on Xubuntu 10.04
Use the query below to find out pending transaction.
If it returns a value, it means there is a pending transaction.
Here is the query:
select dbms_transaction.step_id from dual
;
References:
http://www.acehints.com/2011/07/how-to-check-pending-transaction-in.html
http://www.acehints.com/p/site-map.html
Faced with the same situation playing with Javascript webworkers. Unfortunately Chrome doesn't allow to access javascript workers stored in a local file.
One kind of workaround below using a local storage is to running Chrome with --allow-file-access-from-files
(with s
at the end), but only one instance of Chrome is allowed, which is not too convenient for me. For this reason i'm using Chrome Canary, with file access allowed.
BTW in Firefox there is no such an issue.
Using the BaseName in Get-ChildItem displays the name of the file and and using Name displays the file name with the extension.
$filepath = Get-ChildItem "E:\Test\Basic-English-Grammar-1.pdf"
$filepath.BaseName
Basic-English-Grammar-1
$filepath.Name
Basic-English-Grammar-1.pdf
I had a similar problem and the existing answers to this either weren't applicable, or worked but we couldn't use them for other reasons. So I had to figure out what Chrome disliked about our SVGs.
In our case in turned out to be that the id
attribute of the symbol
tag in the SVG file had a :
in it, which Chrome didn't like. Soon as I removed the :
it worked fine.
Bad:
<svg
xmlns="http://www.w3.org/2000/svg"
xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 72 72">
<defs>
<symbol id="ThisIDHasAColon:AndChromeDoesNotLikeIt">
...
</symbol>
</defs>
<use
....
xlink:href="#ThisIDHasAColon:AndChromeDoesNotLikeIt"
/>
</svg>
Good:
<svg
xmlns="http://www.w3.org/2000/svg"
xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 72 72">
<defs>
<symbol id="NoMoreColon">
...
</symbol>
</defs>
<use
....
xlink:href="#NoMoreColon"
/>
</svg>
You want to make filter dynamic then you have to use Lambda like
from django.db.models import Q
brands = ['ABC','DEF' , 'GHI']
queryset = Product.objects.filter(reduce(lambda x, y: x | y, [Q(brand=item) for item in brands]))
reduce(lambda x, y: x | y, [Q(brand=item) for item in brands])
is equivalent to
Q(brand=brands[0]) | Q(brand=brands[1]) | Q(brand=brands[2]) | .....
SELECT *
FROM t1
JOIN t2 USING (id, date)
perhaps you'll need to use INNEER JOIN or where t2.id is not null if you want results only matching both conditions
I just solved this issue myself. You were on the right track.
@media (min-width: 1200px) {
.container{
max-width: 970px;
}
}
Here we say: On viewports 1200px or larger - set container max-width to 970px. This will overwrite the standard class that currently sets max-width to 1170px for that range.
NOTE: Make sure you include this AFTER the bootstrap.css stuff (everyone has made this little mistake in the past).
Hope this helps.. good luck!
Here is code not using the percentage in the keyframes. Because you used percentages the animation does nothing a long time.
How does this example work:
animation
. This is a short hand for animation properties.from
and to
in the keyframes. from is = 0% and to is = 100%animation: bounce 1s infinite alternate;
the 1s is how long the animation will last..ball {_x000D_
margin-top: 50px;_x000D_
border-radius: 50%;_x000D_
width: 50px;_x000D_
height: 50px;_x000D_
background-color: cornflowerblue;_x000D_
border: 2px solid #999;_x000D_
animation: bounce 1s infinite alternate;_x000D_
-webkit-animation: bounce 1s infinite alternate;_x000D_
}_x000D_
@keyframes bounce {_x000D_
from {_x000D_
transform: translateY(0px);_x000D_
}_x000D_
to {_x000D_
transform: translateY(-15px);_x000D_
}_x000D_
}_x000D_
@-webkit-keyframes bounce {_x000D_
from {_x000D_
transform: translateY(0px);_x000D_
}_x000D_
to {_x000D_
transform: translateY(-15px);_x000D_
}_x000D_
}
_x000D_
<div class="ball"></div>
_x000D_
You can also try nodemon
To Install Nodemon
npm install -g nodemon
To use Nodemon
Normally we start node program like:
node server.js
But here you have to do like:
nodemon server.js
Current answers are perfectly correct on how to create the aggregations, but none actually address the column alias/renaming that is also requested in the question.
Typically, this is how I handle this case:
val dimensionFields = List("col1")
val metrics = List("col2", "col3", "col4")
val columnOfInterests = dimensions ++ metrics
val df = spark.read.table("some_table").
.select(columnOfInterests.map(c => col(c)):_*)
.groupBy(dimensions.map(d => col(d)): _*)
.agg(metrics.map( m => m -> "sum").toMap)
.toDF(columnOfInterests:_*) // that's the interesting part
The last line essentially renames every columns of the aggregated dataframe to the original fields, essentially changing sum(col2)
and sum(col3)
to simply col2
and col3
.
Using a ternary operator inside the ngStyle
binding will function as an if/else condition.
<div [ngStyle]="{'background-image': 'url(' + value ? image : otherImage + ')'}"></div>
Java always uses at least 32 bit values for calculations. This is due to the 32-bit architecture which was common 1995 when java was introduced. The register size in the CPU was 32 bit and the arithmetic logic unit accepted 2 numbers of the length of a cpu register. So the cpus were optimized for such values.
This is the reason why all datatypes which support arithmetic opperations and have less than 32-bits are converted to int (32 bit) as soon as you use them for calculations.
So to sum up it mainly was due to performance issues and is kept nowadays for compatibility.
Run cmd
and then run node server.js
. In your example, you are trying to use the REPL to run your command, which is not going to work. The ellipsis is node.js expecting more tokens before closing the current scope (you can type code in and run it on the fly here)
I use ? (0x25B8) for the right arrow, often to show a collapsed list; and I pair it with ? (0x25BE) to show the list opened up. Both are unobtrusive.
In case anyone wants to have a responsive flexbox with percentages (%) it is much easier for media queries.
flex-basis: 25%;
This will be a lot smoother when testing.
// VARIABLES
$screen-xs: 480px;
$screen-sm: 768px;
$screen-md: 992px;
$screen-lg: 1200px;
$screen-xl: 1400px;
$screen-xxl: 1600px;
// QUERIES
@media screen (max-width: $screen-lg) {
flex-basis: 25%;
}
@media screen (max-width: $screen-md) {
flex-basis: 33.33%;
}
use this:
\password
enter the new password you want for that user and then confirm it. If you don't remember the password and you want to change it, you can log in as postgres and then use this:
ALTER USER 'the username' WITH PASSWORD 'the new password';
In concurrent and/or asynchronous settings, you may want to verify that certain methods (e.g. delegates, event listeners, response handlers, you name it) are not called. Mocking frameworks aside, you can call fail()
in those methods to fail the tests. Expired timeouts are another natural failure condition in such scenarios.
For example:
final CountDownLatch latch = new CountDownLatch(1);
service.asyncCall(someParameter, new ResponseHandler<SomeType>() {
@Override
public void onSuccess(SomeType result) {
assertNotNull(result);
// Further test assertions on the result
latch.countDown();
}
@Override
public void onError(Exception e) {
fail(exception.getMessage());
latch.countDown();
}
});
if ( !latch.await(5, TimeUnit.SECONDS) ) {
fail("No response after 5s");
}
Put your text file in Asset Folder...& read file form that folder...
see below reference links...
http://www.technotalkative.com/android-read-file-from-assets/
http://sree.cc/google/reading-text-file-from-assets-folder-in-android
hope it will help...
You need to add an event, before call your handleFunction like this:
function SingInContainer() {
..
..
handleClose = () => {
}
return (
<SnackBar
open={open}
handleClose={() => handleClose}
variant={variant}
message={message}
/>
<SignInForm/>
)
}
Simple math:
log2 (x) = logy (x) / logy (2)
where y can be anything, which for standard log functions is either 10 or e.
Here's a method using display:flex
:
.container {_x000D_
height: 100%;_x000D_
width: 100%;_x000D_
display: flex;_x000D_
position: fixed;_x000D_
align-items: center;_x000D_
justify-content: center;_x000D_
}
_x000D_
<div class="container">_x000D_
<div>centered text!</div>_x000D_
</div>
_x000D_
This is all you need to read.
https://developer.mozilla.org/en-US/docs/Web/API/FileReader/readAsBinaryString
var height = 200;
var width = 200;
canvas.width = width;
canvas.height = height;
var ctx = canvas.getContext('2d');
ctx.strokeStyle = '#090';
ctx.beginPath();
ctx.arc(width/2, height/2, width/2 - width/10, 0, Math.PI*2);
ctx.stroke();
canvas.toBlob(function (blob) {
//consider blob is your file object
var reader = new FileReader();
reader.onload = function () {
console.log(reader.result);
}
reader.readAsBinaryString(blob);
});
Following Works for me and its good from readability point of view when array element values are small:
key: [string1, string2, string3, string4, string5, string6]
Note:snakeyaml implementation used
rt.jar
contains all of the compiled class files for the base Java Runtime environment. You should not be messing with this jar file.
For MacOS it is called classes.jar
and located under /System/Library/Frameworks/<java_version>/Classes
. Same not messing with it rule applies there as well :).
http://javahowto.blogspot.com/2006/05/what-does-rtjar-stand-for-in.html
Programmers often confuse multidimensional arrays with arrays of pointers.
Most programmers are familiar with named multidimensional arrays, but many are unaware of the fact that multidimensional array can also be created anonymously. Multidimensional arrays are often referred to as "arrays of arrays" or "true multidimensional arrays".
When using named multidimensional arrays, all dimensions must be known at compile time:
int H = read_int();
int W = read_int();
int connect_four[6][7]; // okay
int connect_four[H][7]; // ISO C++ forbids variable length array
int connect_four[6][W]; // ISO C++ forbids variable length array
int connect_four[H][W]; // ISO C++ forbids variable length array
This is how a named multidimensional array looks like in memory:
+---+---+---+---+---+---+---+
connect_four: | | | | | | | |
+---+---+---+---+---+---+---+
| | | | | | | |
+---+---+---+---+---+---+---+
| | | | | | | |
+---+---+---+---+---+---+---+
| | | | | | | |
+---+---+---+---+---+---+---+
| | | | | | | |
+---+---+---+---+---+---+---+
| | | | | | | |
+---+---+---+---+---+---+---+
Note that 2D grids such as the above are merely helpful visualizations. From the point of view of C++, memory is a "flat" sequence of bytes. The elements of a multidimensional array are stored in row-major order. That is, connect_four[0][6]
and connect_four[1][0]
are neighbors in memory. In fact, connect_four[0][7]
and connect_four[1][0]
denote the same element! This means that you can take multi-dimensional arrays and treat them as large, one-dimensional arrays:
int* p = &connect_four[0][0];
int* q = p + 42;
some_int_sequence_algorithm(p, q);
With anonymous multidimensional arrays, all dimensions except the first must be known at compile time:
int (*p)[7] = new int[6][7]; // okay
int (*p)[7] = new int[H][7]; // okay
int (*p)[W] = new int[6][W]; // ISO C++ forbids variable length array
int (*p)[W] = new int[H][W]; // ISO C++ forbids variable length array
This is how an anonymous multidimensional array looks like in memory:
+---+---+---+---+---+---+---+
+---> | | | | | | | |
| +---+---+---+---+---+---+---+
| | | | | | | | |
| +---+---+---+---+---+---+---+
| | | | | | | | |
| +---+---+---+---+---+---+---+
| | | | | | | | |
| +---+---+---+---+---+---+---+
| | | | | | | | |
| +---+---+---+---+---+---+---+
| | | | | | | | |
| +---+---+---+---+---+---+---+
|
+-|-+
p: | | |
+---+
Note that the array itself is still allocated as a single block in memory.
You can overcome the restriction of fixed width by introducing another level of indirection.
Here is a named array of five pointers which are initialized with anonymous arrays of different lengths:
int* triangle[5];
for (int i = 0; i < 5; ++i)
{
triangle[i] = new int[5 - i];
}
// ...
for (int i = 0; i < 5; ++i)
{
delete[] triangle[i];
}
And here is how it looks like in memory:
+---+---+---+---+---+
| | | | | |
+---+---+---+---+---+
^
| +---+---+---+---+
| | | | | |
| +---+---+---+---+
| ^
| | +---+---+---+
| | | | | |
| | +---+---+---+
| | ^
| | | +---+---+
| | | | | |
| | | +---+---+
| | | ^
| | | | +---+
| | | | | |
| | | | +---+
| | | | ^
| | | | |
| | | | |
+-|-+-|-+-|-+-|-+-|-+
triangle: | | | | | | | | | | |
+---+---+---+---+---+
Since each line is allocated individually now, viewing 2D arrays as 1D arrays does not work anymore.
Here is an anonymous array of 5 (or any other number of) pointers which are initialized with anonymous arrays of different lengths:
int n = calculate_five(); // or any other number
int** p = new int*[n];
for (int i = 0; i < n; ++i)
{
p[i] = new int[n - i];
}
// ...
for (int i = 0; i < n; ++i)
{
delete[] p[i];
}
delete[] p; // note the extra delete[] !
And here is how it looks like in memory:
+---+---+---+---+---+
| | | | | |
+---+---+---+---+---+
^
| +---+---+---+---+
| | | | | |
| +---+---+---+---+
| ^
| | +---+---+---+
| | | | | |
| | +---+---+---+
| | ^
| | | +---+---+
| | | | | |
| | | +---+---+
| | | ^
| | | | +---+
| | | | | |
| | | | +---+
| | | | ^
| | | | |
| | | | |
+-|-+-|-+-|-+-|-+-|-+
| | | | | | | | | | |
+---+---+---+---+---+
^
|
|
+-|-+
p: | | |
+---+
Array-to-pointer decay naturally extends to arrays of arrays and arrays of pointers:
int array_of_arrays[6][7];
int (*pointer_to_array)[7] = array_of_arrays;
int* array_of_pointers[6];
int** pointer_to_pointer = array_of_pointers;
However, there is no implicit conversion from T[h][w]
to T**
. If such an implicit conversion did exist, the result would be a pointer to the first element of an array of h
pointers to T
(each pointing to the first element of a line in the original 2D array), but that pointer array does not exist anywhere in memory yet. If you want such a conversion, you must create and fill the required pointer array manually:
int connect_four[6][7];
int** p = new int*[6];
for (int i = 0; i < 6; ++i)
{
p[i] = connect_four[i];
}
// ...
delete[] p;
Note that this generates a view of the original multidimensional array. If you need a copy instead, you must create extra arrays and copy the data yourself:
int connect_four[6][7];
int** p = new int*[6];
for (int i = 0; i < 6; ++i)
{
p[i] = new int[7];
std::copy(connect_four[i], connect_four[i + 1], p[i]);
}
// ...
for (int i = 0; i < 6; ++i)
{
delete[] p[i];
}
delete[] p;
As all "public variables" are in fact properties of the window object (of the window/tab you are looking at), you can just inspect the "window" object instead. If you have multiple frames, you will have to select the correct window object (like in Firebug) anyway.
<>
is used to indicate generics in Java.
T
is a type parameter in this example. And no: instantiating is one of the few things that you can't do with T
.
Apart from the tutorial linked above Angelika Langers Generics FAQ is a great resource on the topic.
$array = @()
for($i=0; $i -lt 5; $i++)
{
$array += $i
}
oops..
I missed the following line in my application.js
//= require jquery_ujs
I replaced it and its working..
======= UPDATED =========
After 5 years, I am back with Same error, now I have brand new Rails 5.1.6, and I found this post again. Just like circle of life.
Now what was the issue is: Rails 5.1 removed support for jquery and jquery_ujs by default, and added
//= require rails-ujs in application.js
It does the following things:
But why is it not including the csrf token for ajax request? If anyone know about this in detail just comment me. I appreciate that.
Anyway I added the following in my custom js file to make it work (Thanks for other answers to help me reach this code):
$( document ).ready(function() {
$.ajaxSetup({
headers: {
'X-CSRF-Token': Rails.csrfToken()
}
});
----
----
});
Python's standard library has json
and urllib2
modules.
import json
import urllib2
data = json.load(urllib2.urlopen('http://someurl/path/to/json'))
You can use .empty()
, like this:
$("#foo").empty();
Remove all child nodes of the set of matched elements from the DOM.
The correct way to hide/change the Toolbar Title is this:
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setTitle(null);
This because when you call setSupportActionBar(toolbar);
, then the getSupportActionBar()
will be responsible of handling everything to the Action Bar, not the toolbar object.
See here
Use Convert.ToString (value, 2)
so in your case
string binValue = Convert.ToString (3, 2);
One technique which worked quite well for me in the past: don't compile multiple C++ source files independently, but rather generate one C++ file which includes all the other files, like this:
// myproject_all.cpp
// Automatically generated file - don't edit this by hand!
#include "main.cpp"
#include "mainwindow.cpp"
#include "filterdialog.cpp"
#include "database.cpp"
Of course this means you have to recompile all of the included source code in case any of the sources changes, so the dependency tree gets worse. However, compiling multiple source files as one translation unit is faster (at least in my experiments with MSVC and GCC) and generates smaller binaries. I also suspect that the compiler is given more potential for optimizations (since it can see more code at once).
This technique breaks in various cases; for instance, the compiler will bail out in case two or more source files declare a global function with the same name. I couldn't find this technique described in any of the other answers though, that's why I'm mentioning it here.
For what it's worth, the KDE Project used this exact same technique since 1999 to build optimized binaries (possibly for a release). The switch to the build configure script was called --enable-final
. Out of archaeological interest I dug up the posting which announced this feature: http://lists.kde.org/?l=kde-devel&m=92722836009368&w=2
you can suppress this error in eclipse: Window -> Preferences -> Maven -> Error/Warnings
In my case, Unity turned out to be a red herring. My problem was a result of different projects targeting different versions of .NET. Unity was set up right and everything was registered with the container correctly. Everything compiled fine. But the type was in a class library, and the class library was set to target .NET Framework 4.0. The WebApi project using Unity was set to target .NET Framework 4.5. Changing the class library to also target 4.5 fixed the problem for me.
I discovered this by commenting out the DI constructor and adding default constructor. I commented out the controller methods and had them throw NotImplementedException. I confirmed that I could reach the controller, and seeing my NotImplementedException told me it was instantiating the controller fine. Next, in the default constructor, I manually instantiated the dependency chain instead of relying on Unity. It still compiled, but when I ran it the error message came back. This confirmed for me that I still got the error even when Unity was out of the picture. Finally, I started at the bottom of the chain and worked my way up, commenting out one line at a time and retesting until I no longer got the error message. This pointed me in the direction of the offending class, and from there I figured out that it was isolated to a single assembly.
If you're using the command-line tools, running git --version
should give you the version number.
Perhaps "the most pythonic way" should include handling the case where list1 and list2 are not the same size. Applying some of these methods will quietly give you an answer. The numpy approach will let you know, most likely with a ValueError.
Example:
import numpy as np
>>> list1 = [ 1, 2 ]
>>> list2 = [ 1, 2, 3]
>>> list3 = [ 1 ]
>>> [a + b for a, b in zip(list1, list2)]
[2, 4]
>>> [a + b for a, b in zip(list1, list3)]
[2]
>>> a = np.array (list1)
>>> b = np.array (list2)
>>> a+b
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ValueError: operands could not be broadcast together with shapes (2) (3)
Which result might you want if this were in a function in your problem?
I think we should to have a consideration about the necessity of parent to use the child’s methods.In fact,parents needn’t to concern the method of child,but can treat the child component as a FSA(finite state machine).Parents component to control the state of child component.So the solution to watch the status change or just use the compute function is enough
On click of TextField cross button(X) onmousemove() gets fired, we can use this event to call any function.
<input type="search" class="actInput" id="ruleContact" onkeyup="ruleAdvanceSearch()" placeholder="Search..." onmousemove="ruleAdvanceSearch()"/>
Had this happen to me when committing from Xcode 6, after I had added a directory of files and subdirectories to the project folder. The problem was that, in the Commit sheet, in the left sidebar, I had checkmarked not only the root directory that I had added, but all of its descendants too. To solve the problem, I checkmarked only the root directory. This also committed all of the descendants, as desired, with no error.
mysqldump --extended-insert=FALSE
Be aware that multiple inserts will be slower than one big insert.
Using the placement feature of new
operator, you can create the object in place and avoid copying:
placement (3) :void* operator new (std::size_t size, void* ptr) noexcept;
Simply returns ptr (no storage is allocated). Notice though that, if the function is called by a new-expression, the proper initialization will be performed (for class objects, this includes calling its default constructor).
I suggest the following:
A* arrayOfAs = new A[5]; //Allocate a block of memory for 5 objects
for (int i = 0; i < 5; ++i)
{
//Do not allocate memory,
//initialize an object in memory address provided by the pointer
new (&arrayOfAs[i]) A(3);
}
If you just want to get a specific parent, not only the window, a specific parent in the tree structure, and also not using recursion, or hard break loop counters, you can use the following:
public static T FindParent<T>(DependencyObject current)
where T : class
{
var dependency = current;
while((dependency = VisualTreeHelper.GetParent(dependency) ?? LogicalTreeHelper.GetParent(dependency)) != null
&& !(dependency is T)) { }
return dependency as T;
}
Just don't put this call in a constructor (since the Parent
property is not yet initialized). Add it in the loading event handler, or in other parts of your application.
Session.Abandon()
this will destroy the data.
Note, this won't necessarily truly remove the session token from a user, and that same session token at a later point might get picked up and created as a new session with the same id because it's deemed to be fair game to be used.
Well, basically what I found is that you can declare the array, but when you set it vba shows you an error.
So I put an special sub to declare global variables and arrays, something like:
Global example(10) As Variant
Sub set_values()
example(1) = 1
example(2) = 1
example(3) = 1
example(4) = 1
example(5) = 1
example(6) = 1
example(7) = 1
example(8) = 1
example(9) = 1
example(10) = 1
End Sub
And whenever I want to use the array, I call the sub first, just in case
call set_values
Msgbox example(5)
Perhaps is not the most correct way, but I hope it works for you
Define two dates using new Date(). Calculate the time difference of two dates using date2. getTime() – date1. getTime(); Calculate the no. of days between two dates, divide the time difference of both the dates by no. of milliseconds in a day (10006060*24)
change Settings Manager >> Preferred Applications >> Utilities
Can't you just say a never ending loop, cookie expires as current date + 1 so it never hits the date it's supposed to expire on because it's always tomorrow? A bit overkill but just saying.
Update: With PostgreSQL 9.5, there are some jsonb
manipulation functionality within PostgreSQL itself (but none for json
; casts are required to manipulate json
values).
Merging 2 (or more) JSON objects (or concatenating arrays):
SELECT jsonb '{"a":1}' || jsonb '{"b":2}', -- will yield jsonb '{"a":1,"b":2}'
jsonb '["a",1]' || jsonb '["b",2]' -- will yield jsonb '["a",1,"b",2]'
So, setting a simple key can be done using:
SELECT jsonb '{"a":1}' || jsonb_build_object('<key>', '<value>')
Where <key>
should be string, and <value>
can be whatever type to_jsonb()
accepts.
For setting a value deep in a JSON hierarchy, the jsonb_set()
function can be used:
SELECT jsonb_set('{"a":[null,{"b":[]}]}', '{a,1,b,0}', jsonb '{"c":3}')
-- will yield jsonb '{"a":[null,{"b":[{"c":3}]}]}'
Full parameter list of jsonb_set()
:
jsonb_set(target jsonb,
path text[],
new_value jsonb,
create_missing boolean default true)
path
can contain JSON array indexes too & negative integers that appear there count from the end of JSON arrays. However, a non-existing, but positive JSON array index will append the element to the end of the array:
SELECT jsonb_set('{"a":[null,{"b":[1,2]}]}', '{a,1,b,1000}', jsonb '3', true)
-- will yield jsonb '{"a":[null,{"b":[1,2,3]}]}'
For inserting into JSON array (while preserving all of the original values), the jsonb_insert()
function can be used (in 9.6+; this function only, in this section):
SELECT jsonb_insert('{"a":[null,{"b":[1]}]}', '{a,1,b,0}', jsonb '2')
-- will yield jsonb '{"a":[null,{"b":[2,1]}]}', and
SELECT jsonb_insert('{"a":[null,{"b":[1]}]}', '{a,1,b,0}', jsonb '2', true)
-- will yield jsonb '{"a":[null,{"b":[1,2]}]}'
Full parameter list of jsonb_insert()
:
jsonb_insert(target jsonb,
path text[],
new_value jsonb,
insert_after boolean default false)
Again, negative integers that appear in path
count from the end of JSON arrays.
So, f.ex. appending to an end of a JSON array can be done with:
SELECT jsonb_insert('{"a":[null,{"b":[1,2]}]}', '{a,1,b,-1}', jsonb '3', true)
-- will yield jsonb '{"a":[null,{"b":[1,2,3]}]}', and
However, this function is working slightly differently (than jsonb_set()
) when the path
in target
is a JSON object's key. In that case, it will only add a new key-value pair for the JSON object when the key is not used. If it's used, it will raise an error:
SELECT jsonb_insert('{"a":[null,{"b":[1]}]}', '{a,1,c}', jsonb '[2]')
-- will yield jsonb '{"a":[null,{"b":[1],"c":[2]}]}', but
SELECT jsonb_insert('{"a":[null,{"b":[1]}]}', '{a,1,b}', jsonb '[2]')
-- will raise SQLSTATE 22023 (invalid_parameter_value): cannot replace existing key
Deleting a key (or an index) from a JSON object (or, from an array) can be done with the -
operator:
SELECT jsonb '{"a":1,"b":2}' - 'a', -- will yield jsonb '{"b":2}'
jsonb '["a",1,"b",2]' - 1 -- will yield jsonb '["a","b",2]'
Deleting, from deep in a JSON hierarchy can be done with the #-
operator:
SELECT '{"a":[null,{"b":[3.14]}]}' #- '{a,1,b,0}'
-- will yield jsonb '{"a":[null,{"b":[]}]}'
For 9.4, you can use a modified version of the original answer (below), but instead of aggregating a JSON string, you can aggregate into a json object directly with json_object_agg()
.
Original answer: It is possible (without plpython or plv8) in pure SQL too (but needs 9.3+, will not work with 9.2)
CREATE OR REPLACE FUNCTION "json_object_set_key"(
"json" json,
"key_to_set" TEXT,
"value_to_set" anyelement
)
RETURNS json
LANGUAGE sql
IMMUTABLE
STRICT
AS $function$
SELECT concat('{', string_agg(to_json("key") || ':' || "value", ','), '}')::json
FROM (SELECT *
FROM json_each("json")
WHERE "key" <> "key_to_set"
UNION ALL
SELECT "key_to_set", to_json("value_to_set")) AS "fields"
$function$;
Edit:
A version, which sets multiple keys & values:
CREATE OR REPLACE FUNCTION "json_object_set_keys"(
"json" json,
"keys_to_set" TEXT[],
"values_to_set" anyarray
)
RETURNS json
LANGUAGE sql
IMMUTABLE
STRICT
AS $function$
SELECT concat('{', string_agg(to_json("key") || ':' || "value", ','), '}')::json
FROM (SELECT *
FROM json_each("json")
WHERE "key" <> ALL ("keys_to_set")
UNION ALL
SELECT DISTINCT ON ("keys_to_set"["index"])
"keys_to_set"["index"],
CASE
WHEN "values_to_set"["index"] IS NULL THEN 'null'::json
ELSE to_json("values_to_set"["index"])
END
FROM generate_subscripts("keys_to_set", 1) AS "keys"("index")
JOIN generate_subscripts("values_to_set", 1) AS "values"("index")
USING ("index")) AS "fields"
$function$;
Edit 2: as @ErwinBrandstetter noted these functions above works like a so-called UPSERT
(updates a field if it exists, inserts if it does not exist). Here is a variant, which only UPDATE
:
CREATE OR REPLACE FUNCTION "json_object_update_key"(
"json" json,
"key_to_set" TEXT,
"value_to_set" anyelement
)
RETURNS json
LANGUAGE sql
IMMUTABLE
STRICT
AS $function$
SELECT CASE
WHEN ("json" -> "key_to_set") IS NULL THEN "json"
ELSE (SELECT concat('{', string_agg(to_json("key") || ':' || "value", ','), '}')
FROM (SELECT *
FROM json_each("json")
WHERE "key" <> "key_to_set"
UNION ALL
SELECT "key_to_set", to_json("value_to_set")) AS "fields")::json
END
$function$;
Edit 3: Here is recursive variant, which can set (UPSERT
) a leaf value (and uses the first function from this answer), located at a key-path (where keys can only refer to inner objects, inner arrays not supported):
CREATE OR REPLACE FUNCTION "json_object_set_path"(
"json" json,
"key_path" TEXT[],
"value_to_set" anyelement
)
RETURNS json
LANGUAGE sql
IMMUTABLE
STRICT
AS $function$
SELECT CASE COALESCE(array_length("key_path", 1), 0)
WHEN 0 THEN to_json("value_to_set")
WHEN 1 THEN "json_object_set_key"("json", "key_path"[l], "value_to_set")
ELSE "json_object_set_key"(
"json",
"key_path"[l],
"json_object_set_path"(
COALESCE(NULLIF(("json" -> "key_path"[l])::text, 'null'), '{}')::json,
"key_path"[l+1:u],
"value_to_set"
)
)
END
FROM array_lower("key_path", 1) l,
array_upper("key_path", 1) u
$function$;
Updated: Added function for replacing an existing json field's key by another given key. Can be in handy for updating data types in migrations or other scenarios like data structure amending.
CREATE OR REPLACE FUNCTION json_object_replace_key(
json_value json,
existing_key text,
desired_key text)
RETURNS json AS
$BODY$
SELECT COALESCE(
(
SELECT ('{' || string_agg(to_json(key) || ':' || value, ',') || '}')
FROM (
SELECT *
FROM json_each(json_value)
WHERE key <> existing_key
UNION ALL
SELECT desired_key, json_value -> existing_key
) AS "fields"
-- WHERE value IS NOT NULL (Actually not required as the string_agg with value's being null will "discard" that entry)
),
'{}'
)::json
$BODY$
LANGUAGE sql IMMUTABLE STRICT
COST 100;
Update: functions are compacted now.
import UIKit
import CoreGraphics
import Accelerate
extension UIImage {
public enum ResizeFramework {
case uikit, coreImage, coreGraphics, imageIO, accelerate
}
/// Resize image with ScaleAspectFit mode and given size.
///
/// - Parameter dimension: width or length of the image output.
/// - Parameter resizeFramework: Technique for image resizing: UIKit / CoreImage / CoreGraphics / ImageIO / Accelerate.
/// - Returns: Resized image.
func resizeWithScaleAspectFitMode(to dimension: CGFloat, resizeFramework: ResizeFramework = .coreGraphics) -> UIImage? {
if max(size.width, size.height) <= dimension { return self }
var newSize: CGSize!
let aspectRatio = size.width/size.height
if aspectRatio > 1 {
// Landscape image
newSize = CGSize(width: dimension, height: dimension / aspectRatio)
} else {
// Portrait image
newSize = CGSize(width: dimension * aspectRatio, height: dimension)
}
return resize(to: newSize, with: resizeFramework)
}
/// Resize image from given size.
///
/// - Parameter newSize: Size of the image output.
/// - Parameter resizeFramework: Technique for image resizing: UIKit / CoreImage / CoreGraphics / ImageIO / Accelerate.
/// - Returns: Resized image.
public func resize(to newSize: CGSize, with resizeFramework: ResizeFramework = .coreGraphics) -> UIImage? {
switch resizeFramework {
case .uikit: return resizeWithUIKit(to: newSize)
case .coreGraphics: return resizeWithCoreGraphics(to: newSize)
case .coreImage: return resizeWithCoreImage(to: newSize)
case .imageIO: return resizeWithImageIO(to: newSize)
case .accelerate: return resizeWithAccelerate(to: newSize)
}
}
// MARK: - UIKit
/// Resize image from given size.
///
/// - Parameter newSize: Size of the image output.
/// - Returns: Resized image.
private func resizeWithUIKit(to newSize: CGSize) -> UIImage? {
UIGraphicsBeginImageContextWithOptions(newSize, true, 1.0)
self.draw(in: CGRect(origin: .zero, size: newSize))
defer { UIGraphicsEndImageContext() }
return UIGraphicsGetImageFromCurrentImageContext()
}
// MARK: - CoreImage
/// Resize CI image from given size.
///
/// - Parameter newSize: Size of the image output.
/// - Returns: Resized image.
// https://developer.apple.com/library/archive/documentation/GraphicsImaging/Reference/CoreImageFilterReference/index.html
private func resizeWithCoreImage(to newSize: CGSize) -> UIImage? {
guard let cgImage = cgImage, let filter = CIFilter(name: "CILanczosScaleTransform") else { return nil }
let ciImage = CIImage(cgImage: cgImage)
let scale = (Double)(newSize.width) / (Double)(ciImage.extent.size.width)
filter.setValue(ciImage, forKey: kCIInputImageKey)
filter.setValue(NSNumber(value:scale), forKey: kCIInputScaleKey)
filter.setValue(1.0, forKey: kCIInputAspectRatioKey)
guard let outputImage = filter.value(forKey: kCIOutputImageKey) as? CIImage else { return nil }
let context = CIContext(options: [.useSoftwareRenderer: false])
guard let resultCGImage = context.createCGImage(outputImage, from: outputImage.extent) else { return nil }
return UIImage(cgImage: resultCGImage)
}
// MARK: - CoreGraphics
/// Resize image from given size.
///
/// - Parameter newSize: Size of the image output.
/// - Returns: Resized image.
private func resizeWithCoreGraphics(to newSize: CGSize) -> UIImage? {
guard let cgImage = cgImage, let colorSpace = cgImage.colorSpace else { return nil }
let width = Int(newSize.width)
let height = Int(newSize.height)
let bitsPerComponent = cgImage.bitsPerComponent
let bytesPerRow = cgImage.bytesPerRow
let bitmapInfo = cgImage.bitmapInfo
guard let context = CGContext(data: nil, width: width, height: height,
bitsPerComponent: bitsPerComponent,
bytesPerRow: bytesPerRow, space: colorSpace,
bitmapInfo: bitmapInfo.rawValue) else { return nil }
context.interpolationQuality = .high
let rect = CGRect(origin: CGPoint.zero, size: newSize)
context.draw(cgImage, in: rect)
return context.makeImage().flatMap { UIImage(cgImage: $0) }
}
// MARK: - ImageIO
/// Resize image from given size.
///
/// - Parameter newSize: Size of the image output.
/// - Returns: Resized image.
private func resizeWithImageIO(to newSize: CGSize) -> UIImage? {
var resultImage = self
guard let data = jpegData(compressionQuality: 1.0) else { return resultImage }
let imageCFData = NSData(data: data) as CFData
let options = [
kCGImageSourceCreateThumbnailWithTransform: true,
kCGImageSourceCreateThumbnailFromImageAlways: true,
kCGImageSourceThumbnailMaxPixelSize: max(newSize.width, newSize.height)
] as CFDictionary
guard let source = CGImageSourceCreateWithData(imageCFData, nil),
let imageReference = CGImageSourceCreateThumbnailAtIndex(source, 0, options) else { return resultImage }
resultImage = UIImage(cgImage: imageReference)
return resultImage
}
// MARK: - Accelerate
/// Resize image from given size.
///
/// - Parameter newSize: Size of the image output.
/// - Returns: Resized image.
private func resizeWithAccelerate(to newSize: CGSize) -> UIImage? {
var resultImage = self
guard let cgImage = cgImage, let colorSpace = cgImage.colorSpace else { return nil }
// create a source buffer
var format = vImage_CGImageFormat(bitsPerComponent: numericCast(cgImage.bitsPerComponent),
bitsPerPixel: numericCast(cgImage.bitsPerPixel),
colorSpace: Unmanaged.passUnretained(colorSpace),
bitmapInfo: cgImage.bitmapInfo,
version: 0,
decode: nil,
renderingIntent: .absoluteColorimetric)
var sourceBuffer = vImage_Buffer()
defer {
sourceBuffer.data.deallocate()
}
var error = vImageBuffer_InitWithCGImage(&sourceBuffer, &format, nil, cgImage, numericCast(kvImageNoFlags))
guard error == kvImageNoError else { return resultImage }
// create a destination buffer
let destWidth = Int(newSize.width)
let destHeight = Int(newSize.height)
let bytesPerPixel = cgImage.bitsPerPixel
let destBytesPerRow = destWidth * bytesPerPixel
let destData = UnsafeMutablePointer<UInt8>.allocate(capacity: destHeight * destBytesPerRow)
defer {
destData.deallocate()
}
var destBuffer = vImage_Buffer(data: destData, height: vImagePixelCount(destHeight), width: vImagePixelCount(destWidth), rowBytes: destBytesPerRow)
// scale the image
error = vImageScale_ARGB8888(&sourceBuffer, &destBuffer, nil, numericCast(kvImageHighQualityResampling))
guard error == kvImageNoError else { return resultImage }
// create a CGImage from vImage_Buffer
let destCGImage = vImageCreateCGImageFromBuffer(&destBuffer, &format, nil, nil, numericCast(kvImageNoFlags), &error)?.takeRetainedValue()
guard error == kvImageNoError else { return resultImage }
// create a UIImage
if let scaledImage = destCGImage.flatMap({ UIImage(cgImage: $0) }) {
resultImage = scaledImage
}
return resultImage
}
}
Get image size
import UIKit
// https://stackoverflow.com/a/55765409/4488252
extension UIImage {
func getFileSizeInfo(allowedUnits: ByteCountFormatter.Units = .useMB,
countStyle: ByteCountFormatter.CountStyle = .memory,
compressionQuality: CGFloat = 1.0) -> String? {
// https://developer.apple.com/documentation/foundation/bytecountformatter
let formatter = ByteCountFormatter()
formatter.allowedUnits = allowedUnits
formatter.countStyle = countStyle
return getSizeInfo(formatter: formatter, compressionQuality: compressionQuality)
}
func getSizeInfo(formatter: ByteCountFormatter, compressionQuality: CGFloat = 1.0) -> String? {
guard let imageData = jpegData(compressionQuality: compressionQuality) else { return nil }
return formatter.string(fromByteCount: Int64(imageData.count))
}
}
Test function
private func test() {
guard let img = UIImage(named: "img") else { return }
printInfo(of: img, title: "original image |")
let dimension: CGFloat = 2000
var framework: UIImage.ResizeFramework = .accelerate
var startTime = Date()
if let img = img.resizeWithScaleAspectFitMode(to: dimension, resizeFramework: framework) {
printInfo(of: img, title: "resized image |", with: framework, startedTime: startTime)
}
framework = .coreGraphics
startTime = Date()
if let img = img.resizeWithScaleAspectFitMode(to: dimension, resizeFramework: framework) {
printInfo(of: img, title: "resized image |", with: framework, startedTime: startTime)
}
framework = .coreImage
startTime = Date()
if let img = img.resizeWithScaleAspectFitMode(to: dimension, resizeFramework: framework) {
printInfo(of: img, title: "resized image |", with: framework, startedTime: startTime)
}
framework = .imageIO
startTime = Date()
if let img = img.resizeWithScaleAspectFitMode(to: dimension, resizeFramework: framework) {
printInfo(of: img, title: "resized image |", with: framework, startedTime: startTime)
}
framework = .uikit
startTime = Date()
if let img = img.resizeWithScaleAspectFitMode(to: dimension, resizeFramework: framework) {
printInfo(of: img, title: "resized image |", with: framework, startedTime: startTime)
}
}
private func printInfo(of image: UIImage, title: String, with resizeFramework: UIImage.ResizeFramework? = nil, startedTime: Date? = nil) {
var description = "\(title) \(image.size)"
if let startedTime = startedTime { description += ", execution time: \(Date().timeIntervalSince(startedTime))" }
if let fileSize = image.getFileSizeInfo(compressionQuality: 0.9) { description += ", size: \(fileSize)" }
if let resizeFramework = resizeFramework { description += ", framework: \(resizeFramework)" }
print(description)
}
original image | (5790.0, 8687.0), size: 17.1 MB
resized image | (1333.0, 2000.0), execution time: 0.8192930221557617, size: 1.1 MB, framework: accelerate
resized image | (1333.0, 2000.0), execution time: 0.44696998596191406, size: 1 MB, framework: coreGraphics
resized image | (1334.0, 2000.0), execution time: 54.172922015190125, size: 1.1 MB, framework: coreImage
resized image | (1333.0, 2000.0), execution time: 1.8765920400619507, size: 1.1 MB, framework: imageIO
resized image | (1334.0, 2000.0), execution time: 0.4638739824295044, size: 1 MB, framework: uikit
I have an Android LG G4 and the only thing that worked for me was to install the Software Update and Repair tool from my device. Steps:
To retrieve text of an auto generated span value just do this :
var al = $("#id-span-name").text();
alert(al);
CSS tricks have a good solution to target IE 11:
http://css-tricks.com/ie-10-specific-styles/
The .NET and Trident/7.0 are unique to IE so can be used to detect IE version 11.
The code then adds the User Agent string to the html tag with the attribute 'data-useragent', so IE 11 can be targeted specifically...
This solution sort by Col1 and group by Col2. Then extract value of Col2 and display it in a mbox.
var grouped = from DataRow dr in dt.Rows orderby dr["Col1"] group dr by dr["Col2"];
string x = "";
foreach (var k in grouped) x += (string)(k.ElementAt(0)["Col2"]) + Environment.NewLine;
MessageBox.Show(x);
I suggest to use this plugin flutter_easyloading
flutter_easyloading is clean and lightweight Loading widget for Flutter App, easy to use without context, support iOS and Android
Add this to your package's pubspec.yaml
file:
dependencies:
flutter_easyloading: ^2.0.0
Now in your Dart code, you can use:
import 'package:flutter_easyloading/flutter_easyloading.dart';
To use First, initialize FlutterEasyLoading
in MaterialApp
/CupertinoApp
class MyApp extends StatelessWidget {
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter EasyLoading',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: MyHomePage(title: 'Flutter EasyLoading'),
builder: EasyLoading.init(),
);
}
}
EasyLoading is a singleton, so you can custom loading style any where like this:
import 'dart:async';
import 'package:flutter/material.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter_easyloading/flutter_easyloading.dart';
import './custom_animation.dart';
void main() {
runApp(MyApp());
configLoading();
}
void configLoading() {
EasyLoading.instance
..displayDuration = const Duration(milliseconds: 2000)
..indicatorType = EasyLoadingIndicatorType.fadingCircle
..loadingStyle = EasyLoadingStyle.dark
..indicatorSize = 45.0
..radius = 10.0
..progressColor = Colors.yellow
..backgroundColor = Colors.green
..indicatorColor = Colors.yellow
..textColor = Colors.yellow
..maskColor = Colors.blue.withOpacity(0.5)
..userInteractions = true
..customAnimation = CustomAnimation();
}
Then, use per your requirement
import 'package:flutter/material.dart';
import 'package:flutter_easyloading/flutter_easyloading.dart';
import 'package:dio/dio.dart';
class TestPage extends StatefulWidget {
@override
_TestPageState createState() => _TestPageState();
}
class _TestPageState extends State<TestPage> {
@override
void initState() {
super.initState();
// EasyLoading.show();
}
@override
void deactivate() {
EasyLoading.dismiss();
super.deactivate();
}
void loadData() async {
try {
EasyLoading.show();
Response response = await Dio().get('https://github.com');
print(response);
EasyLoading.dismiss();
} catch (e) {
EasyLoading.showError(e.toString());
print(e);
}
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Flutter EasyLoading'),
),
body: Center(
child: FlatButton(
textColor: Colors.blue,
child: Text('loadData'),
onPressed: () {
loadData();
// await Future.delayed(Duration(seconds: 2));
// EasyLoading.show(status: 'loading...');
// await Future.delayed(Duration(seconds: 5));
// EasyLoading.dismiss();
},
),
),
);
}
}
The STAThreadAttribute marks a thread to use the Single-Threaded COM Apartment if COM is needed. By default, .NET won't initialize COM at all. It's only when COM is needed, like when a COM object or COM Control is created or when drag 'n' drop is needed, that COM is initialized. When that happens, .NET calls the underlying CoInitializeEx function, which takes a flag indicating whether to join the thread to a multi-threaded or single-threaded apartment.
Read more info here (Archived, June 2009)
and
echo test > afile.txt
redirects stdout to afile.txt
. This is the same as doing
echo test 1> afile.txt
To redirect stderr, you do:
echo test 2> afile.txt
>&
is the syntax to redirect a stream to another file descriptor - 0 is stdin, 1 is stdout, and 2 is stderr.
You can redirect stdout to stderr by doing:
echo test 1>&2 # or echo test >&2
Or vice versa:
echo test 2>&1
So, in short... 2>
redirects stderr to an (unspecified) file, appending &1
redirects stderr to stdout.
The databinding takes place after you've added your blank list item, and it replaces what's there already, you need to add the blank item to the beginning of the List from your controller, or add it after databinding.
EDIT:
After googling this quickly as of ASP.Net 2.0 there's an "AppendDataBoundItems" true property that you can set to...append the databound items.
for details see
I suggest
l = re.compile("(?<!^)\s+(?=[A-Z])(?!.\s)").split(s)
Check this demo.
As explained here by Filip - http://www.filipekberg.se/2011/10/02/adding-properties-and-methods-to-an-expandoobject-dynamicly/
You can add a method too at runtime.
x.Add("Shout", new Action(() => { Console.WriteLine("Hellooo!!!"); }));
x.Shout();
There are multiple methods of creating date as discussed above. I would not repeat same stuff. Here is small method to convert String to Date in Java Script if that is what you are looking for,
function compareDate(str1){
// str1 format should be dd/mm/yyyy. Separator can be anything e.g. / or -. It wont effect
var dt1 = parseInt(str1.substring(0,2));
var mon1 = parseInt(str1.substring(3,5));
var yr1 = parseInt(str1.substring(6,10));
var date1 = new Date(yr1, mon1-1, dt1);
return date1;
}
You should use Googles native image format WebP, it will shrink the image without losing quality. You can compress 80% of the picture without losing quality.
You can use CompressFormat.WEBP
to encode any bitmap in WEBP format.
Example from file:
const int quality = 100;
FileOutputStream out = new FileOutputStream(path);
bitmap.compress(Bitmap.CompressFormat.WEBP, quality, out);
out.close();
I wrote Class Visualizer, which does it. It's free tool which has all the mentioned functionality - I personally use it for the same purposes, as described in this post. For each browsed class it shows 2 instantly generated class diagrams: class relations and class UML view. Class relations diagram allows to traverse through the whole structure. It has full support for annotations and generics plus special support for JPA entities. Works very well with big projects (thousands of classes).
If you would like to write your own, you can start with this six-part document detailing effective usage of C# 2.0 data structures and how to go about analyzing your implementation of data structures in C#. Each article has examples and an installer with samples you can follow along with.
“An Extensive Examination of Data Structures Using C# 2.0” by Scott Mitchell
For me, just setting the compatibility level to higher level works fine. To see C.Level :
select compatibility_level from sys.databases where name = [your_database]
Fix doesn't work.
Exactly as in the example illustration, all these steps only provide access to "system" databases, and no option to select existing user databases that you want to access.
The solution to access a local (not Express Edition) Microsoft SQL server instance resides on the SQL Server side:
Done! Now you can select your local SQL Server from the Server Name list in Connection Properties.
Are you mixing C and C++? One issue that can occur is that the declarations in the .h
file for a .c
file need to be surrounded by:
#if defined(__cplusplus)
extern "C" { // Make sure we have C-declarations in C++ programs
#endif
and:
#if defined(__cplusplus)
}
#endif
Note: if unable / unwilling to modify the .h
file(s) in question, you can surround their inclusion with extern "C"
:
extern "C" {
#include <abc.h>
} //extern
System properties are set on the Java command line using the -Dpropertyname=value
syntax. They can also be added at runtime
using System.setProperty(String key, String value)
or via the various
System.getProperties().load()
methods.
To get a specific system property you can use System.getProperty(String key)
or System.getProperty(String key, String def)
.
Environment variables are set in the OS, e.g. in Linux export HOME=/Users/myusername
or on Windows SET WINDIR=C:\Windows
etc,
and, unlike properties, may not be set at runtime.
To get a specific environment variable you can use System.getenv(String name)
.
WebBrowser1.Document.GetElementById(*element id string*).InvokeMember("submit")
The Sortable JS library is compatible with touch screens and does not require jQuery.
The way it handles touch screens it that you need to touch the screen for about 1 second to start dragging an item.
Also, they present a video test showing that this library is running faster than JQuery UI Sortable.
I wanted to share one way to do the radio button (and entire HTML form) without using the @Html.RadioButtonFor helper, although I think @Html.RadioButtonFor is probably the better and newer way (for one thing, it's strongly typed, so is closely linked to theModelProperty). Nevertheless, here's an old-fashioned, different way you can do it:
<form asp-action="myActionMethod" method="post">
<h3>Do you like pizza?</h3>
<div class="checkbox">
<label>
<input asp-for="likesPizza"/> Yes
</label>
</div>
</form>
This code can go in a myView.cshtml file, and also uses classes to get the radio-button (checkbox) formatting.
If you want to know which is more effective, you should try looking at the estimated query plans, or the actual query plans after execution. It'll tell you the costs of the queries (I find CPU and IO cost to be interesting). I wouldn't be surprised much if there's little to no difference, but you never know. I've seen certain queries use multiple cores on our database server, while a rewritten version of that same query would only use one core (needless to say, the query that used all 4 cores was a good 3 times faster). Never really quite put my finger on why that is, but if you're working with large result sets, such differences can occur without your knowing about it.
You can use d6tstack which creates the table for you and is faster than pd.to_sql() because it uses native DB import commands. It supports Postgres as well as MYSQL and MS SQL.
import pandas as pd
df = pd.read_csv('table.csv')
uri_psql = 'postgresql+psycopg2://usr:pwd@localhost/db'
d6tstack.utils.pd_to_psql(df, uri_psql, 'table')
It is also useful for importing multiple CSVs, solving data schema changes and/or preprocess with pandas (eg for dates) before writing to db, see further down in examples notebook
d6tstack.combine_csv.CombinerCSV(glob.glob('*.csv'),
apply_after_read=apply_fun).to_psql_combine(uri_psql, 'table')
I don't think you should do this.
The POST is, as you know, to modify the collection and it's used to CREATE a new item. So, if you send the id (I think it's not a good idea), you should modify the collection, i.e., modify the item, but it's confusing.
Use it to add an item, without id. It's the best practice.
If you want to capture an UNIQUE constraint (not the id) you can response 409, as you can do in PUT requests. But not the ID.
Try
ps -ef | grep "KEYWORD" | awk '{print $2}'
That command should give you the PID of the processes with KEYWORD in them. In this instance, awk
is returning what is in the 2nd column from the output.
Pretty sad, eh? The way I usually do it is build up a container of iterators instead of deleting during traversal. Then loop through the container and use map.erase()
std::map<K,V> map;
std::list< std::map<K,V>::iterator > iteratorList;
for(auto i : map ){
if ( needs_removing(i)){
iteratorList.push_back(i);
}
}
for(auto i : iteratorList){
map.erase(*i)
}
The cvWaitKey
simply provides something of a delay. For example:
char c = cvWaitKey(33);
if( c == 27 ) break;
Tis was apart of my code in which a video was loaded into openCV and the frames outputted. The 33
number in the code means that after 33ms
, a new frame would be shown. Hence, the was a dely or time interval of 33ms
between each frame being shown on the screen.
Hope this helps.
A node
is the generic name for any type of object in the DOM hierarchy. A node
could be one of the built-in DOM elements such as document
or document.body
, it could be an HTML tag specified in the HTML such as <input>
or <p>
or it could be a text node that is created by the system to hold a block of text inside another element. So, in a nutshell, a node
is any DOM object.
An element
is one specific type of node
as there are many other types of nodes (text nodes, comment nodes, document nodes, etc...).
The DOM consists of a hierarchy of nodes where each node can have a parent, a list of child nodes and a nextSibling and previousSibling. That structure forms a tree-like hierarchy. The document
node has the html
node as its child.
The html
node has its list of child nodes (the head
node and the body
node). The body
node would have its list of child nodes (the top level elements in your HTML page) and so on.
So, a nodeList
is simply an array-like list of nodes
.
An element is a specific type of node, one that can be directly specified in the HTML with an HTML tag and can have properties like an id
or a class
. can have children, etc... There are other types of nodes such as comment nodes, text nodes, etc... with different characteristics. Each node has a property .nodeType
which reports what type of node it is. You can see the various types of nodes here (diagram from MDN):
You can see an ELEMENT_NODE
is one particular type of node where the nodeType
property has a value of 1
.
So document.getElementById("test")
can only return one node and it's guaranteed to be an element (a specific type of node). Because of that it just returns the element rather than a list.
Since document.getElementsByClassName("para")
can return more than one object, the designers chose to return a nodeList
because that's the data type they created for a list of more than one node. Since these can only be elements (only elements typically have a class name), it's technically a nodeList
that only has nodes of type element in it and the designers could have made a differently named collection that was an elementList
, but they chose to use just one type of collection whether it had only elements in it or not.
EDIT: HTML5 defines an HTMLCollection
which is a list of HTML Elements (not any node, only Elements). A number of properties or methods in HTML5 now return an HTMLCollection
. While it is very similar in interface to a nodeList
, a distinction is now made in that it only contains Elements, not any type of node.
The distinction between a nodeList
and an HTMLCollection
has little impact on how you use one (as far as I can tell), but the designers of HTML5 have now made that distinction.
For example, the element.children
property returns a live HTMLCollection.
For unmanaged types aka value types, structs:
Marshal.SizeOf(object);
For managed objects the closer i got is an approximation.
long start_mem = GC.GetTotalMemory(true);
aclass[] array = new aclass[1000000];
for (int n = 0; n < 1000000; n++)
array[n] = new aclass();
double used_mem_median = (GC.GetTotalMemory(false) - start_mem)/1000000D;
Do not use serialization.A binary formatter adds headers, so you can change your class and load an old serialized file into the modified class.
Also it won't tell you the real size in memory nor will take into account memory alignment.
[Edit] By using BiteConverter.GetBytes(prop-value) recursivelly on every property of your class you would get the contents in bytes, that doesn't count the weight of the class or references but is much closer to reality. I would recommend to use a byte array for data and an unmanaged proxy class to access values using pointer casting if size matters, note that would be non-aligned memory so on old computers is gonna be slow but HUGE datasets on MODERN RAM is gonna be considerably faster, as minimizing the size to read from RAM is gonna be a bigger impact than unaligned.
Also one can use this:
{% if forloop.first %}
or
{% if forloop.last %}
You can use setattr
name = 'varname'
value = 'something'
setattr(self, name, value) #equivalent to: self.varname= 'something'
print (self.varname)
#will print 'something'
But, since you should inform an object to receive the new variable, this only works inside classes or modules.
For those of you using Centos (and perhaps other linux distibutions), you need to make sure that its FW (iptables) allows for port 80 or any other port you want.
See here on how to completely disable it (for testing purposes only!). And here for specific rules
ClassLoader.getResourceAsStream()
.
As stated in the comment below, if you are in a multi-ClassLoader
environment (such as unit testing, webapps, etc.) you may need to use Thread.currentThread().getContextClassLoader()
. See http://stackoverflow.com/questions/2308188/getresourceasstream-vs-fileinputstream/2308388#comment21307593_2308388.
You can do it easily with a bit of jQuery
$(document).ready(function(){
var parentHeight = $("#parentDiv").parent().height();
$("#childDiv").height(parentHeight);
});
#This program is to read from excel workbook to fetch only the URL domain names and write to the existing excel workbook in a different sheet..
#Developer - Nilesh K
import pandas as pd
from openpyxl import load_workbook #for writting to the existing workbook
df = pd.read_excel("urlsearch_test.xlsx")
#You can use the below for the relative path.
# r"C:\Users\xyz\Desktop\Python\
l = [] #To make a list in for loop
#begin
#loop starts here for fetching http from a string and iterate thru the entire sheet. You can have your own logic here.
for index, row in df.iterrows():
try:
str = (row['TEXT']) #string to read and iterate
y = (index)
str_pos = str.index('http') #fetched the index position for http
str_pos1 = str.index('/', str.index('/')+2) #fetched the second 3rd position of / starting from http
str_op = str[str_pos:str_pos1] #Substring the domain name
l.append(str_op) #append the list with domain names
#Error handling to skip the error rows and continue.
except ValueError:
print('Error!')
print(l)
l = list(dict.fromkeys(l)) #Keep distinct values, you can comment this line to get all the values
df1 = pd.DataFrame(l,columns=['URL']) #Create dataframe using the list
#end
#Write using openpyxl so it can be written to same workbook
book = load_workbook('urlsearch_test.xlsx')
writer = pd.ExcelWriter('urlsearch_test.xlsx',engine = 'openpyxl')
writer.book = book
df1.to_excel(writer,sheet_name = 'Sheet3')
writer.save()
writer.close()
#The below can be used to write to a different workbook without using openpyxl
#df1.to_excel(r"C:\Users\xyz\Desktop\Python\urlsearch1_test.xlsx",index='false',sheet_name='sheet1')
I would also suggest that you explore the options offered by the jupyter themer. For more modest interface changes you may be satisfied with running the syntax:
jupyter-themer [-c COLOR, --color COLOR]
[-l LAYOUT, --layout LAYOUT]
[-t TYPOGRAPHY, --typography TYPOGRAPHY]
where the options offered by themer would provide you with a less onerous way of making some changes in to the look of Jupyter Notebook. Naturally, you may still to prefer edit the .css
files if the changes you want to apply are elaborate.
<md-input placeholder="Item name..." [(ngModel)]="name" (keyup)="filterResults()"></md-input>
<div *ngFor="let item of filteredValue">
{{item.name}}
</div>
filterResults() {
if (!this.name) {
this.filteredValue = [...this.items];
} else {
this.filteredValue = [];
this.filteredValue = this.items.filter((item) => {
return item.name.toUpperCase().indexOf(this.name.toUpperCase()) > -1;
});
}
}
Don't do any modification on 'items' array(list of items from which results are filtered). When searched item 'name' is empty return the complete list of 'items', if not compare the 'name' with every 'name' in the 'items ' array and filter out only the name that is present in 'items' array and store it in the 'filteredValue'.
List<Map<String, Object>> List = getJdbcTemplate().queryForList(SELECT_ALL_CONVERSATIONS_SQL_FULL, new Object[] {userId, dateFrom, dateTo});
for (Map<String, Object> rowMap : resultList) {
DTO dTO = new DTO();
dTO.setrarchyID((Long) (rowMap.get("ID")));
}
Thanks Jason Rogers's answer first.
In Android && cpp should be this:
const char *nativeString = env->GetStringUTFChars(javaString, nullptr);
// use your string
env->ReleaseStringUTFChars(javaString, nativeString);
Can fix this errors:
1.error: base operand of '->' has non-pointer type 'JNIEnv {aka _JNIEnv}'
2.error: no matching function for call to '_JNIEnv::GetStringUTFChars(JNIEnv*&, _jstring*&, bool)'
3.error: no matching function for call to '_JNIEnv::ReleaseStringUTFChars(JNIEnv*&, _jstring*&, char const*&)'
4.add "env->DeleteLocalRef(nativeString);" at end.
var dateTimeString = "21?-?10?-?2014? ?15?:?40?:?30";
dateTimeString = Regex.Replace(dateTimeString, @"[^\u0000-\u007F]", string.Empty);
var inputFormat = "dd-MM-yyyy HH:mm:ss";
var outputFormat = "yyyy-MM-dd HH:mm:ss";
var dateTime = DateTime.ParseExact(dateTimeString, inputFormat, CultureInfo.InvariantCulture);
var output = dateTime.ToString(outputFormat);
Console.WriteLine(output);
Try this, it works for me.
You can use ES6 backtick syntax too
<a href={`/customer/${item._id}`} >{item.get('firstName')} {item.get('lastName')}</a>
I'm using output parameter in SQL Proc and later I used this values in resultset.
An example on how to use that would be great. There is a couple of examples at the Qt forum, but you're right that the official documentation should be expanded.
QJsonDocument
on its own indeed doesn't produce anything, you will have to add the data to it. That's done through the QJsonObject
, QJsonArray
and QJsonValue
classes. The top-level item needs to be either an array or an object (because 1
is not a valid json document, while {foo: 1}
is.)
I realize I'm a little late to the conversation, but I encountered the exact same issue In my git config I had two entries credentials…
In my .gitconfig file
[credential]
helper = cached
[credentials]
helper = wincred
The Fix: Changed my .gitconfig file to the settings below
[credential]
helper = wincred
[credentials]
helper = wincred
From the keytool man - it imports certificate chain, if input is given in PKCS#7 format, otherwise only the single certificate is imported. You should be able to convert certificates to PKCS#7 format with openssl, via openssl crl2pkcs7 command.
The accepted answer does not work in Jupyter (at least when using some libraries).
The Javascript solutions here only hide warnings that are already showing but not warnings that would be shown in the future.
To hide/unhide warnings in Jupyter and JupyterLab I wrote the following script that essentially toggles css to hide/unhide warnings.
%%javascript
(function(on) {
const e=$( "<a>Setup failed</a>" );
const ns="js_jupyter_suppress_warnings";
var cssrules=$("#"+ns);
if(!cssrules.length) cssrules = $("<style id='"+ns+"' type='text/css'>div.output_stderr { } </style>").appendTo("head");
e.click(function() {
var s='Showing';
cssrules.empty()
if(on) {
s='Hiding';
cssrules.append("div.output_stderr, div[data-mime-type*='.stderr'] { display:none; }");
}
e.text(s+' warnings (click to toggle)');
on=!on;
}).click();
$(element).append(e);
})(true);
This is how we can do it with the new useState
hook.
Method - Pass the state changer function as a props to the child component and do whatever you want to do with the function
import React, {useState} from 'react';
const ParentComponent = () => {
const[state, setState]=useState('');
return(
<ChildConmponent stateChanger={setState} />
)
}
const ChildConmponent = ({stateChanger, ...rest}) => {
return(
<button onClick={() => stateChanger('New data')}></button>
)
}
To save xls into xlsx format, we just need to call SaveAs
method from Microsoft.Office.Interop.Excel
library. This method will take around 16 parameters and one of them is file format as well.
Microsoft document: Here SaveAs Method Arguments
The object we need to pass is like
wb.SaveAs(filename, 51, System.Reflection.Missing.Value,
System.Reflection.Missing.Value, false, false, 1,1, true,
System.Reflection.Missing.Value, System.Reflection.Missing.Value, System.Reflection.Missing.Value)
Here, 51 is is enumeration value for XLSX
For SaveAs in different file formats you can refer the xlFileFormat
Notice that your error message only contains five K, V
pairs, 10 arguments total. This is by design; the ImmutableMap class provides six different of()
methods, accepting between zero and five key-value pairings. There is not an of(...)
overload accepting a varags parameter because K
and V
can be different types.
You want an ImmutableMap.Builder
:
ImmutableMap<String,String> myMap = ImmutableMap.<String, String>builder()
.put("key1", "value1")
.put("key2", "value2")
.put("key3", "value3")
.put("key4", "value4")
.put("key5", "value5")
.put("key6", "value6")
.put("key7", "value7")
.put("key8", "value8")
.put("key9", "value9")
.build();
The JVM is caching Integer values. Hence the comparison with ==
only works for numbers between -128 and 127.
It's been a while since the last time i touch swing but in general is a bad practice to do this. Some of the main disadvantages that comes to mind:
It's more expensive: you will have to allocate way more resources to draw a JFrame that other kind of window container, such as Dialog or JInternalFrame.
Not user friendly: It is not easy to navigate into a bunch of JFrame stuck together, it will look like your application is a set of applications inconsistent and poorly design.
It's easy to use JInternalFrame This is kind of retorical, now it's way easier and other people smarter ( or with more spare time) than us have already think through the Desktop and JInternalFrame pattern, so I would recommend to use it.
First, regarding this solution:
# -*- coding: utf-8 -*-
print u"åäö".encode('utf-8')
It's not practical to explicitly print with a given encoding every time. That would be repetitive and error-prone.
A better solution is to change sys.stdout
at the start of your program, to encode with a selected encoding. Here is one solution I found on Python: How is sys.stdout.encoding chosen?, in particular a comment by "toka":
import sys
import codecs
sys.stdout = codecs.getwriter('utf8')(sys.stdout)
From the manual page:
-P prefix
--directory-prefix=prefix
Set directory prefix to prefix. The directory prefix is the
directory where all other files and sub-directories will be
saved to, i.e. the top of the retrieval tree. The default
is . (the current directory).
So you need to add -P /tmp/cron_test/
(short form) or --directory-prefix=/tmp/cron_test/
(long form) to your command. Also note that if the directory does not exist it will get created.
Subversion 1.5 introduces sparse checkouts which may be something you might find useful. From the documentation:
... sparse directories (or shallow checkouts) ... allows you to easily check out a working copy—or a portion of a working copy—more shallowly than full recursion, with the freedom to bring in previously ignored files and subdirectories at a later time.
function Animal(type) {
if (type == "cat") {
this.__proto__ = Cat.prototype;
} else if (type == "dog") {
this.__proto__ = Dog.prototype;
} else if (type == "fish") {
this.__proto__ = Fish.prototype;
}
}
Animal.prototype.say = function() {
alert("This animal can't speak!");
}
function Cat() {
// init cat
}
Cat.prototype = new Animal();
Cat.prototype.say = function() {
alert("Meow!");
}
function Dog() {
// init dog
}
Dog.prototype = new Animal();
Dog.prototype.say = function() {
alert("Bark!");
}
function Fish() {
// init fish
}
Fish.prototype = new Animal();
var newAnimal = new Animal("dog");
newAnimal.say();
This isn't guaranteed to work as __proto__
isn't a standard variable, but it works at least in Firefox and Safari.
If you don't understand how it works, read about the prototype chain.
I had the same problem as OP and found was due to the options declaration being misspelled:
' Comment comment
Options Explicit
Sub someMacroMakechart()
in a sub module, instead of correct;
' Comment comment
Option Explicit
Sub someMacroMakechart()
I find that the easiest way to return the smallest value of an array is to use the Spread Operator on Math.min() function.
return Math.min(...justPrices);_x000D_
//returns 1.5 on example given
_x000D_
The page on MDN helps to understand it better: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/min
A little extra: This also works on Math.max() function
return Math.max(...justPrices); //returns 9.9 on example given.
Hope this helps!
One simple thing you could do is abstract the test inside a function.
local function isempty(s)
return s == nil or s == ''
end
if isempty(foo) then
foo = "default value"
end
You're missing a FROM and you need to give the subquery an alias.
SELECT COUNT(*) FROM
(
SELECT DISTINCT a.my_id, a.last_name, a.first_name, b.temp_val
FROM dbo.Table_A AS a
INNER JOIN dbo.Table_B AS b
ON a.a_id = b.a_id
) AS subquery;
#footer:after
{
content: "";
width: 40px;
height: 3px;
background-color: #529600;
left: 0;
position: relative;
display: block;
top: 10px;
}
First Program with comments
#include <stdio.h>
int main(){
int *ptr; //Create a pointer that points to random memory address
*ptr = 20; //Dereference that pointer,
// and assign a value to random memory address.
//Depending on external (not inside your program) state
// this will either crash or SILENTLY CORRUPT another
// data structure in your program.
printf("%d", *ptr); //Print contents of same random memory address
// May or may not crash, depending on who owns this address
return 0;
}
Second Program with comments
#include <stdio.h>
int main(){
int *ptr; //Create pointer to random memory address
int q = 50; //Create local variable with contents int 50
ptr = &q; //Update address targeted by above created pointer to point
// to local variable your program properly created
printf("%d", *ptr); //Happily print the contents of said local variable (q)
return 0;
}
The key is you cannot use a pointer until you know it is assigned to an address that you yourself have managed, either by pointing it at another variable you created or to the result of a malloc call.
Using it before is creating code that depends on uninitialized memory which will at best crash but at worst work sometimes, because the random memory address happens to be inside the memory space your program already owns. God help you if it overwrites a data structure you are using elsewhere in your program.
Also if you're making it a console program, you can do: print(" ")
and continue your program. I've found it the easiest way to separate my text.
If you don't need to change something onMeasure - there's absolutely no need for you to override it.
Devunwired code (the selected and most voted answer here) is almost identical to what the SDK implementation already does for you (and I checked - it had done that since 2009).
You can check the onMeasure method here :
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
setMeasuredDimension(getDefaultSize(getSuggestedMinimumWidth(), widthMeasureSpec),
getDefaultSize(getSuggestedMinimumHeight(), heightMeasureSpec));
}
public static int getDefaultSize(int size, int measureSpec) {
int result = size;
int specMode = MeasureSpec.getMode(measureSpec);
int specSize = MeasureSpec.getSize(measureSpec);
switch (specMode) {
case MeasureSpec.UNSPECIFIED:
result = size;
break;
case MeasureSpec.AT_MOST:
case MeasureSpec.EXACTLY:
result = specSize;
break;
}
return result;
}
Overriding SDK code to be replaced with the exact same code makes no sense.
This official doc's piece that claims "the default onMeasure() will always set a size of 100x100" - is wrong.
First to install your app:
adb install -r path\ProjectName.apk
The great thing about the -r is it works even if it wasn’t already installed.
To launch MainActivity, so you can launch it like:
adb shell am start -n com.other.ProjectName/.MainActivity
This will probably not make me a lot of new friends, but it should be added that the C# people have a different guideline: The enum instances are "Pascal case" (upper/lower case mixed). See stackoverflow discussion and MSDN Enumeration Type Naming Guidelines.
As we are exchanging data with a C# system, I am tempted to copy their enums exactly, ignoring Java's "constants have uppercase names" convention. Thinking about it, I don't see much value in being restricted to uppercase for enum instances. For some purposes .name() is a handy shortcut to get a readable representation of an enum constant and a mixed case name would look nicer.
So, yes, I dare question the value of the Java enum naming convention. The fact that "the other half of the programming world" does indeed use a different style makes me think it is legitimate to doubt our own religion.
The clearest way would be to explicitly set i
. For example:
i = 0
while i < 100:
i += 1
try:
# do stuff
except MyException:
continue
I've tried the other answers listed above, but they are very far from decent solutions when dealing with large files -- especially once a single line's size occupies more than ~1/4 of available RAM.
Both bash and awk slurp the entire line, even though for this problem it's not needed. Bash will error out once a line is too long, even if you have enough memory.
I've implemented an extremely simple, fairly unoptimized python script that when tested with large files (~4 GB per line) doesn't slurp, and is by far a better solution than those given.
If this is time critical code for production, you can rewrite the ideas in C or perform better optimizations on the read call (instead of only reading a single byte at a time), after testing that this is indeed a bottleneck.
Code assumes newline is a linefeed character, which is a good assumption for Unix, but YMMV on Mac OS/Windows. Be sure the file ends with a linefeed to ensure the last line character count isn't overlooked.
from sys import stdin, exit
counter = 0
while True:
byte = stdin.buffer.read(1)
counter += 1
if not byte:
exit()
if byte == b'\x0a':
print(counter-1)
counter = 0
I think Pandas is the best way to go. There is already one answer here with Pandas using ExcelFile
function, but it did not work properly for me. From here I found the read_excel
function which works just fine:
import pandas as pd
dfs = pd.read_excel("your_file_name.xlsx", sheet_name="your_sheet_name")
print(dfs.head(10))
P.S. You need to have the xlrd
installed for read_excel
function to work
Update 21-03-2020: As you may see here, there are issues with the xlrd
engine and it is going to be deprecated. The openpyxl
is the best replacement. So as described here, the canonical syntax should be:
dfs = pd.read_excel("your_file_name.xlsx", sheet_name="your_sheet_name", engine="openpyxl")
One alternative is to represent your 2D array as a 1D array. This can make element-wise operations more efficient. You should probably wrap it in a class that would also contain width and height.
Another alternative is to represent a 2D array as an std::vector<std::vector<int> >
. This will let you use STL's algorithms for array arithmetic, and the vector will also take care of memory management for you.
I was also facing such an issue while dockerizing our existing application. The solution si to add allowPublicKeyRetrieval connection option of MySQL with a value of true to the JDBC connection string. If that is not working , try adding useSSL option to false as well .
The resultant string would look like this :
jdbc:mysql://<database server ip>:3306/databaseName?allowPublicKeyRetrieval=true&useSSL=false
You can use triple quotes (single ' or double "):
a = """
text
text
text
"""
print(a)
The above solutions didn't work for me. Here is what I finally came up with:
$( "#ddl" ).find( "option:selected" ).text(); // Text
$( "#ddl" ).find( "option:selected" ).prop("value"); // Value
Setting the img
tag color
works
img {color:#fff}
body {background:#000022}_x000D_
img {color:#fff}
_x000D_
<img src="http://badsrc.com/blah" alt="BLAH BLAH BLAH" />
_x000D_
I think the best answer I've come up with is here: https://codepen.io/sentrathis96/pen/yJPZGx
I can't take credit for this, I forked this from another codepen user to fix the google maps dependency to actually load
Make note of the call to:
InfoWindow() // constructor
You could have an extension of this problem in case of your initial text was set into a string type variable, for example:
function status(){
if [ $1 != "stopped" ]; then
artist="ABC";
track="CDE";
album="DEF";
status_message="The current track is $track at $album by $artist";
echo $status_message;
read_status $1 "$status_message";
fi
}
function read_status(){
if [ $1 != "playing" ]; then
echo $2
fi
}
In this case if you don't pass the status_message variable forward as string (surrounded by "") it will be split in a mount of different arguments.
"$variable": The current track is CDE at DEF by ABC
$variable: The
There is no "absolute path for a file existing in the asset folder". The content of your project's assets/
folder are packaged in the APK file. Use an AssetManager
object to get an InputStream
on an asset.
For WebView
, you can use the file
Uri
scheme in much the same way you would use a URL. The syntax for assets is file:///android_asset/...
(note: three slashes) where the ellipsis is the path of the file from within the assets/
folder.
It is 2017, but this thread is top in my search engine, today the following methods are preferred (initializer lists)
std::vector<std::string> v = { "xyzzy", "plugh", "abracadabra" };
std::vector<std::string> v({ "xyzzy", "plugh", "abracadabra" });
std::vector<std::string> v{ "xyzzy", "plugh", "abracadabra" };
From https://en.wikipedia.org/wiki/C%2B%2B11#Initializer_lists
In addition to a performance considerations, there's a functional difference too. When you join comments, you are asking for posts that have comments- an inner join by default. When you include comments, you are asking for all posts- an outer join.
It is working fine with me.
I have the following HTML:
<div>
<select id="select1">
<option value="1">test1</option>
<option value="2" selected="selected">test2</option>
<option value="3">test3</option>
</select>
<br/>
<button onClick="GetSelectedItem('select1');">Get Selected Item</button>
</div>
And the following JavaScript:
function GetSelectedItem(el)
{
var e = document.getElementById(el);
var strSel = "The Value is: " + e.options[e.selectedIndex].value + " and text is: " + e.options[e.selectedIndex].text;
alert(strSel);
}
See that you are using the right id. In case you are using it with ASP.NET, the id changes when rendered.
help(input)
shows what keyboard shortcuts produce EOF, namely, Unix: Ctrl-D, Windows: Ctrl-Z+Return:
input([prompt]) -> string
Read a string from standard input. The trailing newline is stripped. If the user hits EOF (Unix: Ctl-D, Windows: Ctl-Z+Return), raise EOFError. On Unix, GNU readline is used if enabled. The prompt string, if given, is printed without a trailing newline before reading.
You could reproduce it using an empty file:
$ touch empty
$ python3 -c "input()" < empty
Traceback (most recent call last):
File "<string>", line 1, in <module>
EOFError: EOF when reading a line
You could use /dev/null
or nul
(Windows) as an empty file for reading. os.devnull
shows the name that is used by your OS:
$ python3 -c "import os; print(os.devnull)"
/dev/null
Note: input()
happily accepts input from a file/pipe. You don't need stdin
to be connected to the terminal:
$ echo abc | python3 -c "print(input()[::-1])"
cba
Either handle EOFError
in your code:
try:
reply = input('Enter text')
except EOFError:
break
Or configure your editor to provide a non-empty input when it runs your script e.g., by using a customized command line if it allows it: python3 "%f" < input_file
Try swapping your colon :
for a bar |
. that should do it
<a href="file://C|/path/to/file/file.html">Link Anchor</a>
You can do it by manipulating the timecode or by using strtotime(). Here's an example using strtotime.
$data['created'] = date('Y-m-d H:i:s', strtotime("+1 week"));
.compare()
returns an integer, which is a measure of the difference between the two strings.
0
indicates that the two strings compare as equal. operator==
simply returns a boolean, indicating whether the strings are equal or not.
If you don't need the extra detail, you may as well just use ==
.
As per docker-compose 1.6.0:
You can now specify both a build and an image key if you're using the new file format.
docker-compose build
will build the image and tag it with the name you've specified, whiledocker-compose pull
will attempt to pull it.
So your docker-compose.yml
would be
version: '2'
services:
wildfly:
build: /path/to/dir/Dockerfile
image: wildfly_server
ports:
- 9990:9990
- 80:8080
To update docker-compose
sudo pip install -U docker-compose==1.6.0
jQuery's attr
method returns the value of the attribute:
The
.attr()
method gets the attribute value for only the first element in the matched set. To get the value for each element individually, use a looping construct such as jQuery's.each()
or.map()
method.
All you need is:
$('html').attr('lang') == 'fr-FR'
However, you might want to do a case-insensitive match:
$('html').attr('lang').toLowerCase() === 'fr-fr'
jQuery's val
method returns the value of a form element.
The
.val()
method is primarily used to get the values of form elements such asinput
,select
andtextarea
. In the case of<select multiple="multiple">
elements, the.val()
method returns an array containing each selected option; if no option is selected, it returnsnull
.