Sometimes sorting the whole data ahead is very time consuming. We can groupby first and doing topk for each group:
g = df.groupby(['id']).apply(lambda x: x.nlargest(topk,['value'])).reset_index(drop=True)
you may use this query for selecting top records in oracle. Rakesh B
select * from User_info where id >= (select max(id)-10 from User_info);
To programatically add a row:
DataGrid.Items.Add(new DataItem());
To programatically add a column:
DataGridTextColumn textColumn = new DataGridTextColumn();
textColumn.Header = "First Name";
textColumn.Binding = new Binding("FirstName");
dataGrid.Columns.Add(textColumn);
Check out this post on the WPF DataGrid discussion board for more information.
Simply don't put whole commands in variables. You'll get into a lot of trouble trying to recover quoted arguments.
Also:
#! /bin/bash
if [ $# -ne 2 ]
then
echo "Usage: $(basename $0) DIRECTORY BACKUP_DIRECTORY"
exit 1
fi
directory=$1
backup_directory=$2
current_date=$(date +%Y-%m-%dT%H-%M-%S)
backup_file="${backup_directory}/${current_date}.backup"
tar cv "$directory" | openssl des3 -salt | split -b 1024m - "$backup_file"
Here is my answer based on @Luca Davanzo's answer, override the touchesBegan
event instead of a tap gesture:
import UIKit
public protocol TapableLabelDelegate: NSObjectProtocol {
func tapableLabel(_ label: TapableLabel, didTapUrl url: String, atRange range: NSRange)
}
public class TapableLabel: UILabel {
private var links: [String: NSRange] = [:]
private(set) var layoutManager = NSLayoutManager()
private(set) var textContainer = NSTextContainer(size: CGSize.zero)
private(set) var textStorage = NSTextStorage() {
didSet {
textStorage.addLayoutManager(layoutManager)
}
}
public weak var delegate: TapableLabelDelegate?
public override var attributedText: NSAttributedString? {
didSet {
if let attributedText = attributedText {
textStorage = NSTextStorage(attributedString: attributedText)
} else {
textStorage = NSTextStorage()
links = [:]
}
}
}
public override var lineBreakMode: NSLineBreakMode {
didSet {
textContainer.lineBreakMode = lineBreakMode
}
}
public override var numberOfLines: Int {
didSet {
textContainer.maximumNumberOfLines = numberOfLines
}
}
public override init(frame: CGRect) {
super.init(frame: frame)
setup()
}
public required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
setup()
}
public override func layoutSubviews() {
super.layoutSubviews()
textContainer.size = bounds.size
}
/// addLinks
///
/// - Parameters:
/// - text: text of link
/// - url: link url string
public func addLink(_ text: String, withURL url: String) {
guard let theText = attributedText?.string as? NSString else {
return
}
let range = theText.range(of: text)
guard range.location != NSNotFound else {
return
}
links[url] = range
}
private func setup() {
isUserInteractionEnabled = true
layoutManager.addTextContainer(textContainer)
textContainer.lineFragmentPadding = 0
textContainer.lineBreakMode = lineBreakMode
textContainer.maximumNumberOfLines = numberOfLines
}
public override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
guard let locationOfTouch = touches.first?.location(in: self) else {
return
}
textContainer.size = bounds.size
let indexOfCharacter = layoutManager.glyphIndex(for: locationOfTouch, in: textContainer)
for (urlString, range) in links {
if NSLocationInRange(indexOfCharacter, range), let url = URL(string: urlString) {
delegate?.tapableLabel(self, didTapUrl: urlString, atRange: range)
}
}
}}
You can't change the color of the line (you can't specify different foreground colors for the same element, and the text and its decoration form a single element). However there are some tricks:
a:link, a:visited {text-decoration: none; color: red; border-bottom: 1px solid #006699; }
a:hover, a:active {text-decoration: none; color: red; border-bottom: 1px solid #1177FF; }
Also you can make some cool effects this way:
a:link {text-decoration: none; color: red; border-bottom: 1px dashed #006699; }
Hope it helps.
As an alternative to new Date().getTimezoneOffset()
and moment().format('zz')
, you can also use momentjs:
var offset = moment.parseZone(Date.now()).utcOffset() / 60_x000D_
console.log(offset);
_x000D_
<script src="https://cdn.jsdelivr.net/momentjs/2.13.0/moment.min.js"></script>
_x000D_
jstimezone is also quite buggy and unmaintained (https://bitbucket.org/pellepim/jstimezonedetect/issues?status=new&status=open)
print "Number of lines: $nids\n";
print "Content: $ids\n";
How did Perl complain? print $ids
should work, though you probably want a newline at the end, either explicitly with print
as above or implicitly by using say
or -l/$\.
If you want to interpolate a variable in a string and have something immediately after it that would looks like part of the variable but isn't, enclose the variable name in {}
:
print "foo${ids}bar";
I also face this problem sometimes. Click on gradle console in bottom bar of android studio, at right side. It will show the exact error in logs. My problem was that I had compile SDK 22 and imported appcomact library was of sdk 23.
Just to elaborate a bit more on Henry's answer, you can also use specific error codes, from raise_application_error and handle them accordingly on the client side. For example:
Suppose you had a PL/SQL procedure like this to check for the existence of a location record:
PROCEDURE chk_location_exists
(
p_location_id IN location.gie_location_id%TYPE
)
AS
l_cnt INTEGER := 0;
BEGIN
SELECT COUNT(*)
INTO l_cnt
FROM location
WHERE gie_location_id = p_location_id;
IF l_cnt = 0
THEN
raise_application_error(
gc_entity_not_found,
'The associated location record could not be found.');
END IF;
END;
The raise_application_error allows you to raise a specific error code. In your package header, you can define:
gc_entity_not_found INTEGER := -20001;
If you need other error codes for other types of errors, you can define other error codes using -20002, -20003, etc.
Then on the client side, you can do something like this (this example is for C#):
/// <summary>
/// <para>Represents Oracle error number when entity is not found in database.</para>
/// </summary>
private const int OraEntityNotFoundInDB = 20001;
And you can execute your code in a try/catch
try
{
// call the chk_location_exists SP
}
catch (Exception e)
{
if ((e is OracleException) && (((OracleException)e).Number == OraEntityNotFoundInDB))
{
// create an EntityNotFoundException with message indicating that entity was not found in
// database; use the message of the OracleException, which will indicate the table corresponding
// to the entity which wasn't found and also the exact line in the PL/SQL code where the application
// error was raised
return new EntityNotFoundException(
"A required entity was not found in the database: " + e.Message);
}
}
use:
var parsedobj = jQuery.parseJSON( jsonObj);
This will only be useful if you don't need the format to stay in string. otherwise you'd have to convert this back to JSON using the JSON library.
This worked for me as-
HTML-
<div style="background-color: #535; width: 100%; height: 80px;">
<div class="center">
Test <br>
kumar adnioas<br>
sanjay<br>
1990
</div>
</div>
CSS-
.center {
position: relative;
left: 50%;
top: 50%;
height: 82%;
transform: translate(-50%, -50%);
transform: -webkit-translate(-50%, -50%);
transform: -ms-translate(-50%, -50%);
}
Hope will help you too.
While the other folks who answered this question are (sadly) correct that this information is hidden from us by the browser, I thought I'd post a workaround I came up with:
I configured my server app to set a custom response header (X-Response-Url
) containing the url that was requested. Whenever my ajax code receives a response, it checks if xhr.getResponseHeader("x-response-url")
is defined, in which case it compares it to the url that it originally requested via $.ajax()
. If the strings differ, I know there was a redirect, and additionally, what url we actually arrived at.
This does have the drawback of requiring some server-side help, and also may break down if the url gets munged (due to quoting/encoding issues etc) during the round trip... but for 99% of cases, this seems to get the job done.
On the server side, my specific case was a python application using the Pyramid web framework, and I used the following snippet:
import pyramid.events
@pyramid.events.subscriber(pyramid.events.NewResponse)
def set_response_header(event):
request = event.request
if request.is_xhr:
event.response.headers['X-Response-URL'] = request.url
The one marked as correct answer, is not enough, you need one more step, type this command in the terminal in order to create the icons:
flutter pub run flutter_launcher_icons:main
Yes, I also found it here: http://developer.android.com/tools/testing/activity_testing.html It's seems a key-input protection mechanism which includes the screen-lock, but not only includes it. According to this webpage, it also defines some key-input restriction for auto-test framework in Android.
Quick timing comparison:
setup = '''
from random import randint
def test_1():
num = randint(0,1000000)
return str(num).zfill(7)
def test_2():
num = randint(0,1000000)
return format(num, '07')
def test_3():
num = randint(0,1000000)
return '{0:07d}'.format(num)
def test_4():
num = randint(0,1000000)
return format(num, '07d')
def test_5():
num = randint(0,1000000)
return '{:07d}'.format(num)
def test_6():
num = randint(0,1000000)
return '{x:07d}'.format(x=num)
def test_7():
num = randint(0,1000000)
return str(num).rjust(7, '0')
'''
import timeit
print timeit.Timer("test_1()", setup=setup).repeat(3, 900000)
print timeit.Timer("test_2()", setup=setup).repeat(3, 900000)
print timeit.Timer("test_3()", setup=setup).repeat(3, 900000)
print timeit.Timer("test_4()", setup=setup).repeat(3, 900000)
print timeit.Timer("test_5()", setup=setup).repeat(3, 900000)
print timeit.Timer("test_6()", setup=setup).repeat(3, 900000)
print timeit.Timer("test_7()", setup=setup).repeat(3, 900000)
> [2.281613943830961, 2.2719342631547077, 2.261691106209631]
> [2.311480238815406, 2.318420542148333, 2.3552384305184493]
> [2.3824197456864304, 2.3457239951596485, 2.3353268829498646]
> [2.312442972404032, 2.318053102249902, 2.3054072168069872]
> [2.3482314132374853, 2.3403386400002475, 2.330108825844775]
> [2.424549090688892, 2.4346475296851438, 2.429691196530058]
> [2.3259756401716487, 2.333549212826732, 2.32049893822186]
I've made different tests of different repetitions. The differences are not huge, but in all tests, the zfill
solution was fastest.
TYPE variable = jsonbody["key"]?.Value<TYPE>() ?? DEFAULT_VALUE;
e.g.
bool attachMap = jsonbody["map"]?.Value<bool>() ?? false;
With MSSQL you can do something like this:
declare @result varchar(500)
set @result = ''
select @result = @result + ModuleValue + ', '
from TableX where ModuleId = @ModuleId
thanks friends, after trying all and not getting desired result i think to use a hidden div with that arabic message and with jQuery fading affects solved the problem. Script I wrote is: .js file
$('#enterOpeningPrice').fadeIn();
$('#enterOpeningPrice').fadeOut(10000);
.html file
<div id="enterOpeningPrice">
<p>???? ??? ????????</p>
</div>
Thanks to all..
I suspect GCC (mingw) has custom code to disable the checks for the wide printf
functions on Windows. This is because Microsoft's own implementation (MSVCRT) is badly wrong and has %s
and %ls
backwards for the wide printf
functions; since GCC can't be sure whether you will be linking with MS's broken implementation or some corrected one, the least-obtrusive thing it can do is just shut off the warning.
star is expanded by Unix shell. Your call is not accessing shell, it's merely trying to remove a file with the name ending with the star
you can use those functions together with iferror
as a work around.
try =IFERROR(VALUE(A4),(CONCATENATE(A4)))
While on the upper line in normal mode, hit Shift+j.
You can prepend a count too, so 3J
on the top line would join all those lines together.
I see many answer reporting for zip and rar the Media Types application/zip
and application/x-rar-compressed
, respectively.
While the former matching is correct, for the latter IANA reports here https://www.iana.org/assignments/media-types/application/vnd.rar that for rar application/x-rar-compressed
is a deprecated alias name and instead application/vnd.rar
is the official one.
So, right Media Types from IANA in 2020 are:
zip
: application/zip
rar
: application/vnd.rar
let urlString = "http://heyhttp.org/me.json"
var request = URLRequest(url: URL(string: urlString)!)
let session = URLSession.shared
session.dataTask(with: request) {data, response, error in
if error != nil {
print(error!.localizedDescription)
return
}
do {
let jsonResult: NSDictionary? = try JSONSerialization.jsonObject(with: data!, options: JSONSerialization.ReadingOptions.mutableContainers) as? NSDictionary
print("Synchronous\(jsonResult)")
} catch {
print(error.localizedDescription)
}
}.resume()
http://www.boutell.com/newfaq/creating/include.html
this would explain how to write your own clientsideinlcude but jQuery is a lot, A LOT easier option ... plus you will gain a lot more by using jQuery anyways
Based on previous posts, I ended up with the following light-weigh alias solution that can be added to .bashrc
:
if [ -n "$(type -P xclip)" ]
then
alias xclip='xclip -selection clipboard'
alias clipboard='if [ -p /dev/stdin ]; then xclip -in; fi; xclip -out'
fi
Examples:
# Copy
$ date | clipboard
Sat Dec 29 14:12:57 PST 2018
# Paste
$ date
Sat Dec 29 14:12:57 PST 2018
# Chain
$ date | clipboard | wc
1 6 29
<?php
$terms = get_the_terms($product->ID, 'product_cat');
foreach ($terms as $term) {
$product_cat = $term->name;
echo $product_cat;
break;
}
?>
Use position:fixed;
and set the top:0;left:0;right:0;height:100px;
and you should be able to have it "stick" to the top of the page.
<div style="position:fixed;top:0;left:0;right:0;height:100px;">Some buttons</div>
Assuming you've done a successful Product > Archive then, from Organizer (Shift Apple 2) click Archives.
Select your Archive. Select Share. In the "Select the content and options for sharing:" pane set Contents to "iOS App Store Package (.ipa) and Identity to iPhone Distribution.
Click Next, enter an App name and click Save.
Full gory details with screenshots are here: Xcode4UserGuide
This is an example of the use of this pattern that worked for me on empty datagrids.
<Style.Triggers>
<DataTrigger Binding="{Binding Items.Count, RelativeSource={RelativeSource Self}}" Value="0">
<Setter Property="Background">
<Setter.Value>
<VisualBrush Stretch="None">
<VisualBrush.Visual>
<TextBlock Text="We did't find any matching records for your search..." FontSize="16" FontWeight="SemiBold" Foreground="LightCoral"/>
</VisualBrush.Visual>
</VisualBrush>
</Setter.Value>
</Setter>
</DataTrigger>
</Style.Triggers>
I resolved my problem doing this:
json_encode($array, JSON_UNESCAPED_UNICODE)
to encode the data;The result is a .json file encoded to ANSI as UTF-8.
Using pyautogui
To install
pip install pyautogui
and to find the location of the mouse pointer
import pyautogui
print(pyautogui.position())
This will give the pixel location to which mouse pointer is at.
You can always call funciton differently: foo.call(this);
in this way you will be able to use this
context inside the function.
Example:
<button onclick="foo.call(this)" id="bar">Button</button>?
var foo = function()
{
this.innerHTML = "Not a button";
};
select <column list> into <dest. table> from <source table>;
You could do this way.
SELECT windows_release, windows_service_pack_level,
windows_sku, os_language_version
into new_table_name
FROM sys.dm_os_windows_info OPTION (RECOMPILE);
Printing the STACK trace, logging it or send message to the user, are very bad ways to process the exceptions. Does any one can describe solutions to fix the exception in proper steps then can trying the broken instruction again?
The time() function displays the seconds between now and the unix epoch , 01 01 1970 (00:00:00 GMT). The strtotime() transforms a normal date format into a time() format. So the representation of that date into seconds will be : 1388516401
Source: http://www.php.net/time
$(document).ready(function() {_x000D_
$("a").click(function(event) {_x000D_
var myClass = $(this).attr("class");_x000D_
var myId = $(this).attr('id');_x000D_
alert(myClass + " " + myId);_x000D_
});_x000D_
})
_x000D_
<html>_x000D_
_x000D_
<head>_x000D_
<script type="text/javascript" src="http://code.jquery.com/jquery-1.7.2.min.js"></script>_x000D_
</head>_x000D_
_x000D_
<body>_x000D_
<a href="#" id="kana1" class="konbo">click me 1</a>_x000D_
<a href="#" id="kana2" class="kinta">click me 2</a>_x000D_
</body>_x000D_
_x000D_
</html>
_x000D_
This works for me. There is no event.target.class function in jQuery.
What is JNDI ?
It stands for Java Naming and Directory Interface.
What is its basic use?
JNDI allows distributed applications to look up services in an abstract, resource-independent way.
When it is used?
The most common use case is to set up a database connection pool on a Java EE application server. Any application that's deployed on that server can gain access to the connections they need using the JNDI name java:comp/env/FooBarPool
without having to know the details about the connection.
This has several advantages:
devl->int->test->prod
environments, you can use the same JNDI name in each environment and hide the actual database being used. Applications don't have to change as they migrate between environments.Why not just have a Year
property, which is perfectly fine?
Interfaces don't contain fields because fields represent a specific implementation of data representation, and exposing them would break encapsulation. Thus having an interface with a field would effectively be coding to an implementation instead of an interface, which is a curious paradox for an interface to have!
For instance, part of your Year
specification might require that it be invalid for ICar
implementers to allow assignment to a Year
which is later than the current year + 1 or before 1900. There's no way to say that if you had exposed Year
fields -- far better to use properties instead to do the work here.
Set the upper date to date + 1 day, so in your case, set it to 2011-02-01.
All declarations of functions and variables in header files should be extern
.
Exceptions to this rule are inline functions defined in the header and variables which - although defined in the header - will have to be local to the translation unit (the source file the header gets included into): these should be static
.
In source files, extern
shouldn't be used for functions and variables defined in the file. Just prefix local definitions with static
and do nothing for shared definitions - they'll be external symbols by default.
The only reason to use extern
at all in a source file is to declare functions and variables which are defined in other source files and for which no header file is provided.
Declaring function prototypes extern
is actually unnecessary. Some people dislike it because it will just waste space and function declarations already have a tendency to overflow line limits. Others like it because this way, functions and variables can be treated the same way.
There is still hope to solve this using pure (GNU) sed. Despite this is not a generic solution in some cases you can use "loops" to eliminate all the unnecessary parts of the string like this:
sed -r -e ":loop" -e 's|(http://.+)/.*|\1|' -e "t loop"
The only problem here is it will also cut the last separator character ('/'), but if you really need it you can still simply put it back after the "loop" finished, just append this additional command at the end of the previous command line:
-e "s,$,/,"
JObjects can be enumerated via JProperty objects by casting it to a JToken:
foreach (JProperty x in (JToken)obj) { // if 'obj' is a JObject
string name = x.Name;
JToken value = x.Value;
}
If you have a nested JObject inside of another JObject, you don't need to cast because the accessor will return a JToken:
foreach (JProperty x in obj["otherObject"]) { // Where 'obj' and 'obj["otherObject"]' are both JObjects
string name = x.Name;
JToken value = x.Value;
}
tl;dr ~
flips the bits. As a result the sign changes. ~2
is a negative number (0b..101
). To output a negative number ruby
prints -
, then two's complement of ~2
: -(~~2 + 1) == -(2 + 1) == 3
. Positive numbers are output as is.
There's an internal value, and its string representation. For positive integers, they basically coincide:
irb(main):001:0> '%i' % 2
=> "2"
irb(main):002:0> 2
=> 2
The latter being equivalent to:
irb(main):003:0> 2.to_s
"2"
~
flips the bits of the internal value. 2
is 0b010
. ~2
is 0b..101
. Two dots (..
) represent an infinite number of 1
's. Since the most significant bit (MSB) of the result is 1
, the result is a negative number ((~2).negative? == true
). To output a negative number ruby
prints -
, then two's complement of the internal value. Two's complement is calculated by flipping the bits, then adding 1
. Two's complement of 0b..101
is 3
. As such:
irb(main):005:0> '%b' % 2
=> "10"
irb(main):006:0> '%b' % ~2
=> "..101"
irb(main):007:0> ~2
=> -3
To sum it up, it flips the bits, which changes the sign. To output a negative number it prints -
, then ~~2 + 1
(~~2 == 2
).
The reason why ruby
outputs negative numbers like so, is because it treats the stored value as a two's complement of the absolute value. In other words, what's stored is 0b..101
. It's a negative number, and as such it's a two's complement of some value x
. To find x
, it does two's complement of 0b..101
. Which is two's complement of two's complement of x
. Which is x
(e.g ~(~2 + 1) + 1 == 2
).
In case you apply ~
to a negative number, it just flips the bits (which nevertheless changes the sign):
irb(main):008:0> '%b' % -3
=> "..101"
irb(main):009:0> '%b' % ~-3
=> "10"
irb(main):010:0> ~-3
=> 2
What is more confusing is that ~0xffffff00 != 0xff
(or any other value with MSB equal to 1
). Let's simplify it a bit: ~0xf0 != 0x0f
. That's because it treats 0xf0
as a positive number. Which actually makes sense. So, ~0xf0 == 0x..f0f
. The result is a negative number. Two's complement of 0x..f0f
is 0xf1
. So:
irb(main):011:0> '%x' % ~0xf0
=> "..f0f"
irb(main):012:0> (~0xf0).to_s(16)
=> "-f1"
In case you're not going to apply bitwise operators to the result, you can consider ~
as a -x - 1
operator:
irb(main):018:0> -2 - 1
=> -3
irb(main):019:0> --3 - 1
=> 2
But that is arguably of not much use.
An example Let's say you're given a 8-bit (for simplicity) netmask, and you want to calculate the number of 0
's. You can calculate them by flipping the bits and calling bit_length
(0x0f.bit_length == 4
). But ~0xf0 == 0x..f0f
, so we've got to cut off the unneeded bits:
irb(main):014:0> '%x' % (~0xf0 & 0xff)
=> "f"
irb(main):015:0> (~0xf0 & 0xff).bit_length
=> 4
Or you can use the XOR operator (^
):
irb(main):016:0> i = 0xf0
irb(main):017:0> '%x' % i ^ ((1 << i.bit_length) - 1)
=> "f"
For the 64-bit RegAsm.exe you will need to find it someplace like this:
c:\Windows\Microsoft.NET\Framework64\version_number_stuff\regasm.exe
If you don't wan't to use ng-model there is ng-value
you can try.
Here's the fiddle for this: http://jsfiddle.net/Rg9sG/1/
I have the same issue. My url is as below
http://somesite/someapplication
Below doesnot work
<link rel="shortcut icon" type="image/x-icon" href="favicon.ico" />
I got it to work like below
<link rel="shortcut icon" type="image/x-icon" href="/someapplication/favicon.ico" />
There's no guarantee that the content length you're provided is actually correct. Try something akin to the following:
ByteArrayOutputStream baos = new ByteArrayOutputStream();
InputStream is = null;
try {
is = url.openStream ();
byte[] byteChunk = new byte[4096]; // Or whatever size you want to read in at a time.
int n;
while ( (n = is.read(byteChunk)) > 0 ) {
baos.write(byteChunk, 0, n);
}
}
catch (IOException e) {
System.err.printf ("Failed while reading bytes from %s: %s", url.toExternalForm(), e.getMessage());
e.printStackTrace ();
// Perform any other exception handling that's appropriate.
}
finally {
if (is != null) { is.close(); }
}
You'll then have the image data in baos
, from which you can get a byte array by calling baos.toByteArray()
.
This code is untested (I just wrote it in the answer box), but it's a reasonably close approximation to what I think you're after.
If you support flash you can use https://everyplay.com/assets/clipboard.swf and use the flashvars text to set the text
https://everyplay.com/assets/clipboard.swf?text=It%20Works
Thats the one i use to copy and you can set as extra if doesn't support these options you can use :
For Internet Explorer: window.clipboardData.setData(DataFormat, Text) and window.clipboardData.getData(DataFormat)
You can use the DataFormat's Text and Url to getData and setData.
And to delete data:
You can use the DataFormat's File, HTML, Image, Text and URL. PS: You Need To Use window.clipboardData.clearData(DataFormat);
And for other thats not support window.clipboardData and swf flash files you can also use control + c button on your keyboard for windows and for mac its command + c
Bassed on this page here:
I modified it so you can use ddbb in diferent hosts.
#!/bin/sh echo "Usage: dbdiff [user1:pass1@dbname1:host] [user2:pass2@dbname2:host] [ignore_table1:ignore_table2...]" dump () { up=${1%%@*}; down=${1##*@}; user=${up%%:*}; pass=${up##*:}; dbname=${down%%:*}; host=${down##*:}; mysqldump --opt --compact --skip-extended-insert -u $user -p$pass $dbname -h $host $table > $2 } rm -f /tmp/db.diff # Compare up=${1%%@*}; down=${1##*@}; user=${up%%:*}; pass=${up##*:}; dbname=${down%%:*}; host=${down##*:}; for table in `mysql -u $user -p$pass $dbname -h $host -N -e "show tables" --batch`; do if [ "`echo $3 | grep $table`" = "" ]; then echo "Comparing '$table'..." dump $1 /tmp/file1.sql dump $2 /tmp/file2.sql diff -up /tmp/file1.sql /tmp/file2.sql >> /tmp/db.diff else echo "Ignored '$table'..." fi done less /tmp/db.diff rm -f /tmp/file1.sql /tmp/file2.sql
Like epascarello said, the server that hosts the resource needs to have CORS enabled. What you can do on the client side (and probably what you are thinking of) is set the mode of fetch to CORS (although this is the default setting I believe):
fetch(request, {mode: 'cors'});
However this still requires the server to enable CORS as well, and allow your domain to request the resource.
Check out the CORS documentation, and this awesome Udacity video explaining the Same Origin Policy.
You can also use no-cors mode on the client side, but this will just give you an opaque response (you can't read the body, but the response can still be cached by a service worker or consumed by some API's, like <img>
):
fetch(request, {mode: 'no-cors'})
.then(function(response) {
console.log(response);
}).catch(function(error) {
console.log('Request failed', error)
});
Its not a perfect solution, but a good workaround.
You need to assign your elements to behave as table with display: table-cell
HTML:
<ul>
<li>
<div><input type="checkbox" value="1" name="test[]" id="myid1"></div>
<div><label for="myid1">label1</label></div>
</li>
<li>
<div><input type="checkbox" value="2" name="test[]" id="myid2"></div>
<div><label for="myid2">label2</label></div>
</li>
</ul>
CSS:
li div { display: table-cell; vertical-align: middle; }
Given
std::vector<Rule>& topPriorityRules;
The correct way to remove the first element of the referenced vector is
topPriorityRules.erase(topPriorityRules.begin());
which is exactly what you suggested.
Looks like i need to do iterator overloading.
There is no need to overload an iterator in order to erase first element of std::vector
.
P.S. Vector (dynamic array) is probably a wrong choice of data structure if you intend to erase from the front.
No, C++ does not support 'finally' blocks. The reason is that C++ instead supports RAII: "Resource Acquisition Is Initialization" -- a poor name† for a really useful concept.
The idea is that an object's destructor is responsible for freeing resources. When the object has automatic storage duration, the object's destructor will be called when the block in which it was created exits -- even when that block is exited in the presence of an exception. Here is Bjarne Stroustrup's explanation of the topic.
A common use for RAII is locking a mutex:
// A class with implements RAII
class lock
{
mutex &m_;
public:
lock(mutex &m)
: m_(m)
{
m.acquire();
}
~lock()
{
m_.release();
}
};
// A class which uses 'mutex' and 'lock' objects
class foo
{
mutex mutex_; // mutex for locking 'foo' object
public:
void bar()
{
lock scopeLock(mutex_); // lock object.
foobar(); // an operation which may throw an exception
// scopeLock will be destructed even if an exception
// occurs, which will release the mutex and allow
// other functions to lock the object and run.
}
};
RAII also simplifies using objects as members of other classes. When the owning class' is destructed, the resource managed by the RAII class gets released because the destructor for the RAII-managed class gets called as a result. This means that when you use RAII for all members in a class that manage resources, you can get away with using a very simple, maybe even the default, destructor for the owner class since it doesn't need to manually manage its member resource lifetimes. (Thanks to Mike B for pointing this out.)
For those familliar with C# or VB.NET, you may recognize that RAII is similar to .NET deterministic destruction using IDisposable and 'using' statements. Indeed, the two methods are very similar. The main difference is that RAII will deterministically release any type of resource -- including memory. When implementing IDisposable in .NET (even the .NET language C++/CLI), resources will be deterministically released except for memory. In .NET, memory is not deterministically released; memory is only released during garbage collection cycles.
† Some people believe that "Destruction is Resource Relinquishment" is a more accurate name for the RAII idiom.
I found resolving issues with the project's Java Build Path settings fixed this issue.
Right-click the project, select Properties, select Java Build Path.
(NB: I'm using Eclipse Kepler Service Release 2 on Windows 7)
You need to have file system permission to create the directory.
Example: In Ubuntu 10.04 apache (php) runs as user: www-data in group: www-data
Meaning the user www-data needs access to create the directory.
You can try this yourself by using: 'su www-data' to become the www-data user.
As a quick fix, you can do: sudo chmod 777 my_parent_dir
What are you doing: (I am using bytes instead of in for better reading)
You start with int *ap
and so on, so your (your computers) memory looks like this:
-------------- memory used by some one else --------
000: ?
001: ?
...
098: ?
099: ?
-------------- your memory --------
100: something <- here is *ap
101: 41 <- here starts a[]
102: 42
103: 43
104: 44
105: 45
106: something <- here waits x
lets take a look waht happens when (print short cut for ...print("$d", ...)
print a[0] -> 41 //no surprise
print a -> 101 // because a points to the start of the array
print *a -> 41 // again the first element of array
print a+1 -> guess? 102
print *(a+1) -> whats behind 102? 42 (we all love this number)
and so on, so a[0] is the same as *a, a[1] = *(a+1), ....
a[n] just reads easier.
now, what happens at line 9?
ap=a[4] // we know a[4]=*(a+4) somehow *105 ==> 45
// warning! converting int to pointer!
-------------- your memory --------
100: 45 <- here is *ap now 45
x = *ap; // wow ap is 45 -> where is 45 pointing to?
-------------- memory used by some one else --------
bang! // dont touch neighbours garden
So the "warning" is not just a warning it's a severe error.
I liked the solution in the earlier post.
I made a mini-class, called it class AlphabeticalHash
. It also has a method called ap
, which accepts one argument, a Hash
, as input: ap variable
. Akin to pp (pp variable
)
But it will (try and) print in alphabetical list (its keys). Dunno if anyone else wants to use this, it's available as a gem, you can install it as such: gem install alphabetical_hash
For me, this is simple enough. If others need more functionality, let me know, I'll include it into the gem.
EDIT: Credit goes to Peter, who gave me the idea. :)
Using jQuery, you can do it in a super simple one-line-script.
// HTML
<div id="columnOne">
</div>
<div id="columnTwo">
</div>
// Javascript
$("#columnTwo").height($("#columnOne").height());
This is a bit more interesting. The technique is called Faux Columns. More or less you don't actually set the actual height to be the same, but you rig up some graphical elements so they look the same height.
Try this:
var extension = fileString.substring(fileString.lastIndexOf('.') + 1);
The biggest issues are:
1) The infinite header reparsing. Already mentioned. Mitigations (like #pragma once) usually only work per compilation unit, not per build.
2) The fact that the toolchain is often separated into multiple binaries (make, preprocessor, compiler, assembler, archiver, impdef, linker, and dlltool in extreme cases) that all have to reinitialize and reload all state all the time for each invocation (compiler, assembler) or every couple of files (archiver, linker, and dlltool).
See also this discussion on comp.compilers: http://compilers.iecc.com/comparch/article/03-11-078 specially this one:
http://compilers.iecc.com/comparch/article/02-07-128
Note that John, the moderator of comp.compilers seems to agree, and that this means it should be possible to achieve similar speeds for C too, if one integrates the toolchain fully and implements precompiled headers. Many commercial C compilers do this to some degree.
Note that the Unix model of factoring everything out to a separate binary is a kind of the worst case model for Windows (with its slow process creation). It is very noticable when comparing GCC build times between Windows and *nix, especially if the make/configure system also calls some programs just to obtain information.
On saveAndFlush
, changes will be flushed to DB immediately in this command. With save
, this is not necessarily true, and might stay just in memory, until flush
or commit
commands are issued.
But be aware, that even if you flush the changes in transaction and do not commit them, the changes still won't be visible to the outside transactions until the commit in this transaction.
In your case, you probably use some sort of transactions mechanism, which issues commit
command for you if everything works out fine.
i got the same issue, i updated the hosts file with the server address and it worked
pg_dump -h localhost -p 5432 -U postgres -d mydb -t my_table > backup.sql
You can take the backup of a single table but I would suggest to take the backup of whole database and then restore whichever table you need. It is always good to have backup of whole database.
Alternatively, you could invert the image using the bitwise_not
function of OpenCV:
imagem = cv2.bitwise_not(imagem)
I liked this example.
To add my grain of sand here: if an element resides behind a fixed div it will be considered as not visible and you won't be able to click it; this happened to me recently and i solved it executing a script as recommended above, which does:
document.evaluate("<xpath locator for element to be clicked>", document, null, XPathResult.ANY_TYPE, null).iterateNext().click()", locator);
Everything in one line:
get-aduser -filter * -Properties memberof | select name, @{ l="GroupMembership"; e={$_.memberof -join ";" } } | export-csv membership.csv
I don't see a compelling reason to override onResume
or onStart
to set the width and height of the Window
within DialogFragment
's Dialog
-- these particular lifecycle methods can get called repeatedly and unnecessarily execute that resizing code more than once due to things like multi window switching, backgrounding then foregrounding the app, and so on. The consequences of that repetition are fairly trivial, but why settle for that?
Setting the width/height instead within an overridden onActivityCreated()
method will be an improvement because this method realistically only gets called once per instance of your DialogFragment
. For example:
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
Window window = getDialog().getWindow();
assert window != null;
WindowManager.LayoutParams layoutParams = window.getAttributes();
layoutParams.width = ViewGroup.LayoutParams.MATCH_PARENT;
window.setAttributes(layoutParams);
}
Above I just set the width to be match_parent
irrespective of device orientation. If you want your landscape dialog to not be so wide, you can do a check of whether getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT
beforehand.
51Degrees' PHP solution is able to do this. you can get the free Open Source API here https://github.com/51Degrees/Device-Detection. You can use the HardwareFamily Property to determine if it is an iPad/iPod/iPhone etc.
Due to the nature of Apple's User-Agents the initial result will return a generic device, however if you are interested in the specific device you can use a JavaScript client side override to determine to specific model.
To do this you can implement something similar to the following logic once you have determined it is an Apple Device, in this case for an iPhone.
// iPhone model checks.
function getiPhoneModel() {
// iPhone 6 Plus
if ((window.screen.height / window.screen.width == 736 / 414) &&
(window.devicePixelRatio == 3)) {
return "iPhone 6 Plus";
}
// iPhone 6
else if ((window.screen.height / window.screen.width == 667 / 375) &&
(window.devicePixelRatio == 2)) {
return "iPhone 6";
}
// iPhone 5/5C/5S or 6 in zoom mode
else if ((window.screen.height / window.screen.width == 1.775) &&
(window.devicePixelRatio == 2)) {
return "iPhone 5, 5C, 5S or 6 (display zoom)";
}
// iPhone 4/4S
else if ((window.screen.height / window.screen.width == 1.5) &&
(window.devicePixelRatio == 2)) {
return "iPhone 4 or 4S";
}
// iPhone 1/3G/3GS
else if ((window.screen.height / window.screen.width == 1.5) &&
(window.devicePixelRatio == 1)) {
return "iPhone 1, 3G or 3GS";
} else {
return "Not an iPhone";
};
}
Or for an iPad
function getiPadVersion() {
var pixelRatio = getPixelRatio();
var return_string = "Not an iPad";
if (pixelRatio == 1 ) {
return_string = "iPad 1, iPad 2, iPad Mini 1";
}
if (pixelRatio == 2) {
return_string = "iPad 3, iPad 4, iPad Air 1, iPad Air 2, iPad Mini 2, iPad
Mini 3";
}
return return_string;
}
For more information on research 51Degrees have done into Apple devices you can read their blog post here https://51degrees.com/blog/device-detection-for-apple-iphone-and-ipad.
Disclosure: I work for 51Degrees.
There are a few great examples:
This has also been covered before in this Stack Overflow question.
NuGet Google reCAPTCHA V2 for MVC 4 and 5
You just need to keep track of a max value like this:
int maxValue = 0;
Then as you iterate through the numbers, keep setting the maxValue to the next value if it is greater than the maxValue:
if (value > maxValue) {
maxValue = value;
}
Repeat in the opposite direction for minValue.
You can also use the below code
$("input:checkbox:checked").map(function()
{
return $(this).val();
}).get();
I ran into this problem myself. The only solution I have is to record the macro in an excel workbook first. Then, drag and drop THE MODULE from the open workbook into the add-in modules. This will be a copy of the above module, but the keyboard shortcut you assigned to it will thankfully persist.
I just record a garbage macro and move it in there, then copy the code from my real module afterwords.
Felt so great to figure this out, I felt like I had to reply to the 5 year old posts I found on the subject!!!
The snippet you're showing doesn't seem to be directly responsible for the error.
This is how you can CAUSE the error:
namespace MyNameSpace
{
int i; <-- THIS NEEDS TO BE INSIDE THE CLASS
class MyClass
{
...
}
}
If you don't immediately see what is "outside" the class, this may be due to misplaced or extra closing bracket(s) }
.
Use .astype
.
>>> a = numpy.array([1, 2, 3, 4], dtype=numpy.float64)
>>> a
array([ 1., 2., 3., 4.])
>>> a.astype(numpy.int64)
array([1, 2, 3, 4])
See the documentation for more options.
If you want check the click or drag behavior of a specific element you can do this without having to listen to the body.
$(document).ready(function(){_x000D_
let click;_x000D_
_x000D_
$('.owl-carousel').owlCarousel({_x000D_
items: 1_x000D_
});_x000D_
_x000D_
// prevent clicks when sliding_x000D_
$('.btn')_x000D_
.on('mousemove', function(){_x000D_
click = false;_x000D_
})_x000D_
.on('mousedown', function(){_x000D_
click = true;_x000D_
});_x000D_
_x000D_
// change mouseup listener to '.content' to listen to a wider area. (mouse drag release could happen out of the '.btn' which we have not listent to). Note that the click will trigger if '.btn' mousedown event is triggered above_x000D_
$('.btn').on('mouseup', function(){_x000D_
if(click){_x000D_
$('.result').text('clicked');_x000D_
} else {_x000D_
$('.result').text('dragged');_x000D_
}_x000D_
});_x000D_
});
_x000D_
.content{_x000D_
position: relative;_x000D_
width: 500px;_x000D_
height: 400px;_x000D_
background: #f2f2f2;_x000D_
}_x000D_
.slider, .result{_x000D_
position: relative;_x000D_
width: 400px;_x000D_
}_x000D_
.slider{_x000D_
height: 200px;_x000D_
margin: 0 auto;_x000D_
top: 30px;_x000D_
}_x000D_
.btn{_x000D_
display: flex;_x000D_
align-items: center;_x000D_
justify-content: center;_x000D_
text-align: center;_x000D_
height: 100px;_x000D_
background: #c66;_x000D_
}_x000D_
.result{_x000D_
height: 30px;_x000D_
top: 10px;_x000D_
text-align: center;_x000D_
}
_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/OwlCarousel2/2.3.4/owl.carousel.min.js"></script>_x000D_
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/OwlCarousel2/2.3.4/assets/owl.carousel.min.css" />_x000D_
<div class="content">_x000D_
<div class="slider">_x000D_
<div class="owl-carousel owl-theme">_x000D_
<div class="item">_x000D_
<a href="#" class="btn" draggable="true">click me without moving the mouse</a>_x000D_
</div>_x000D_
<div class="item">_x000D_
<a href="#" class="btn" draggable="true">click me without moving the mouse</a>_x000D_
</div>_x000D_
</div>_x000D_
<div class="result"></div>_x000D_
</div>_x000D_
_x000D_
</div>
_x000D_
Your app is crashing at:
welcomePlayer.setText("Welcome Back, " + String.valueOf(mPlayer.getName(this)) + " !");
because mPlayer=null
.
You forgot to initialize Player mPlayer
in your PlayGame Activity.
mPlayer = new Player(context,"");
A hacky way of printing a backslash that doesn't involve escaping is to pass its character code to chr
:
>>> print(chr(92))
\
You should use PATCH for partial updates - either using json-patch documents (see http://tools.ietf.org/html/draft-ietf-appsawg-json-patch-08 or http://www.mnot.net/blog/2012/09/05/patch) or the XML patch framework (see http://tools.ietf.org/html/rfc5261). In my opinion though, json-patch is the best fit for your kind of business data.
PATCH with JSON/XML patch documents has very strait forward semantics for partial updates. If you start using POST, with modified copies of the original document, for partial updates you soon run into problems where you want missing values (or, rather, null values) to represent either "ignore this property" or "set this property to the empty value" - and that leads down a rabbit hole of hacked solutions that in the end will result in your own kind of patch format.
You can find a more in-depth answer here: http://soabits.blogspot.dk/2013/01/http-put-patch-or-post-partial-updates.html.
You can get a non-js-based redirection from an ajax call by putting in one of those meta refresh tags. This here seems to be working:
return Content("<meta http-equiv=\"refresh\" content=\"0;URL='" + @Url.Action("Index", "Home") + "'\" />");
Note: I discovered that meta refreshes are auto-disabled by Firefox, rendering this not very useful.
WebSocket is basically an application protocol (with reference to the ISO/OSI network stack), message-oriented, which makes use of TCP as transport layer.
The idea behind the WebSocket protocol consists of reusing the established TCP connection between a Client and Server. After the HTTP handshake the Client and Server start speaking WebSocket protocol by exchanging WebSocket envelopes. HTTP handshaking is used to overcome any barrier (e.g. firewalls) between a Client and a Server offering some services (usually port 80 is accessible from anywhere, by anyone). Client and Server can switch over speaking HTTP in any moment, making use of the same TCP connection (which is never released).
Behind the scenes WebSocket rebuilds the TCP frames in consistent envelopes/messages. The full-duplex channel is used by the Server to push updates towards the Client in an asynchronous way: the channel is open and the Client can call any futures/callbacks/promises to manage any asynchronous WebSocket received message.
To put it simply, WebSocket is a high level protocol (like HTTP itself) built on TCP (reliable transport layer, on per frame basis) that makes possible to build effective real-time application with JS Clients (previously Comet and long-polling techniques were used to pull updates from the Server before WebSockets were implemented. See Stackoverflow post: Differences between websockets and long polling for turn based game server ).
Here is my solution for the problem, I was building a WP site, so there is a little php code here. But the key is scrollwheel: false,
in the map object.
function initMap() {
var uluru = {lat: <?php echo $latitude; ?>, lng: <?php echo $Longitude; ?>};
var map = new google.maps.Map(document.getElementById('map'), {
zoom: 18,
scrollwheel: false,
center: uluru
});
var marker = new google.maps.Marker({
position: uluru,
map: map
});
}
Hope this will help. Cheers
I've tested it using the following code:
$emails = ['[email protected]', '[email protected]','[email protected]'];
Mail::send('emails.welcome', [], function($message) use ($emails)
{
$message->to($emails)->subject('This is test e-mail');
});
var_dump( Mail:: failures());
exit;
Result - empty array for failures.
But of course you need to configure your app/config/mail.php
properly. So first make sure you can send e-mail just to one user and then test your code with many users.
Moreover using this simple code none of my e-mails were delivered to free mail accounts, I got only emails to inboxes that I have on my paid hosting accounts, so probably they were caught by some filters (it's maybe simple topic/content issue but I mentioned it just in case you haven't received some of e-mails) .
The example 1 will not compile. This version of it compiles and runs. It uses lambda features to abbreviate it.
/*
* [RollYourOwnTimeouts.java]
*
* Summary: How to roll your own timeouts.
*
* Copyright: (c) 2016 Roedy Green, Canadian Mind Products, http://mindprod.com
*
* Licence: This software may be copied and used freely for any purpose but military.
* http://mindprod.com/contact/nonmil.html
*
* Requires: JDK 1.8+
*
* Created with: JetBrains IntelliJ IDEA IDE http://www.jetbrains.com/idea/
*
* Version History:
* 1.0 2016-06-28 initial version
*/
package com.mindprod.example;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import static java.lang.System.*;
/**
* How to roll your own timeouts.
* Based on code at http://stackoverflow.com/questions/19456313/simple-timeout-in-java
*
* @author Roedy Green, Canadian Mind Products
* @version 1.0 2016-06-28 initial version
* @since 2016-06-28
*/
public class RollYourOwnTimeout
{
private static final long MILLIS_TO_WAIT = 10 * 1000L;
public static void main( final String[] args )
{
final ExecutorService executor = Executors.newSingleThreadExecutor();
// schedule the work
final Future<String> future = executor.submit( RollYourOwnTimeout::requestDataFromWebsite );
try
{
// where we wait for task to complete
final String result = future.get( MILLIS_TO_WAIT, TimeUnit.MILLISECONDS );
out.println( "result: " + result );
}
catch ( TimeoutException e )
{
err.println( "task timed out" );
future.cancel( true /* mayInterruptIfRunning */ );
}
catch ( InterruptedException e )
{
err.println( "task interrupted" );
}
catch ( ExecutionException e )
{
err.println( "task aborted" );
}
executor.shutdownNow();
}
/**
* dummy method to read some data from a website
*/
private static String requestDataFromWebsite()
{
try
{
// force timeout to expire
Thread.sleep( 14_000L );
}
catch ( InterruptedException e )
{
}
return "dummy";
}
}
i will explain Depth Details of interface and Abstract class.if you know overview about interface and abstract class, then first question arrive in your mind when we should use Interface and when we should use Abstract class. So please check below explanation of Interface and Abstract class.
When we should use Interface?
if you don't know about implementation just we have requirement specification then we go with Interface
When we should use Abstract Class?
if you know implementation but not completely (partially implementation) then we go with Abstract class.
Interface
every method by default public abstract means interface is 100% pure abstract.
Abstract
can have Concrete method and Abstract method, what is Concrete method, which have implementation in Abstract class, An abstract class is a class that is declared abstract—it may or may not include abstract methods.
Interface
We cannot declared interface as a private, protected
Q. Why we are not declaring Interface a private and protected?
Because by default interface method is public abstract so and so that reason that we are not declaring the interface as private and protected.
Interface method
also we cannot declared interface as private,protected,final,static,synchronized,native.....
i will give the reason: why we are not declaring synchronized method because we cannot create object of interface and synchronize are work on object so and son reason that we are not declaring the synchronized method Transient concept are also not applicable because transient work with synchronized.
Abstract
we are happily use with public,private final static.... means no restriction are applicable in abstract.
Interface
Variables are declared in Interface as a by default public static final so we are also not declared variable as a private, protected.
Volatile modifier is also not applicable in interface because interface variable is by default public static final and final variable you cannot change the value once it assign the value into variable and once you declared variable into interface you must to assign the variable.
And volatile variable is keep on changes so it is opp. to final that is reason we are not use volatile variable in interface.
Abstract
Abstract variable no need to declared public static final.
i hope this article is useful.
CSS3 introduces new units that are measured relative to the viewport, which is the window in this case. These are vh
and vw
, which measure viewport height and width, respectively. Here is a simple CSS only solution:
img {
max-width: 100%;
max-height: 100vh;
height: auto;
}
The one caveat to this is that it only works if there are no other elements contributing height on the page.
You need to declare the desired function before your main function:
#include <stdio.h>
int yourfunc(void);
int main(void) {
yourfunc();
}
debugger
is a reserved keyword by EcmaScript and given optional semantics since ES5
As a result, it can be used not only in Chrome, but also Firefox and Node.js via node debug myscript.js
.
The standard says:
Syntax
DebuggerStatement : debugger ;
Semantics
Evaluating the DebuggerStatement production may allow an implementation to cause a breakpoint when run under a debugger. If a debugger is not present or active this statement has no observable effect.
The production DebuggerStatement : debugger ; is evaluated as follows:
- If an implementation defined debugging facility is available and enabled, then
- Perform an implementation defined debugging action.
- Let result be an implementation defined Completion value.
- Else
- Let result be (normal, empty, empty).
- Return result.
No changes in ES6.
try keyup instead of change.
<script type="text/javascript">
$(document).ready(function () {
$('#inputDatabaseName').keyup(function () { alert('test'); });
});
</script>
Just use the length filter on the whole array. It works on more than just strings:
{{ notcount|length }}
All answers are about how to fix it, but the best is to download nodeJs and let the installer add to PATH variable.
Version 12 and 13 are too new, so I had to download 11.15 https://nodejs.org/download/release/v11.15.0/
The m000493
method seems to perform some kind of XOR encryption. This means that the same method can be used for both encrypting and decrypting the text. All you have to do is reverse m0001cd
:
string p0 = Encoding.UTF8.GetString(Convert.FromBase64String("OBFZDT..."));
string result = m000493(p0, "_p0lizei.");
// result == "gaia^unplugged^Ta..."
with return m0001cd(builder3.ToString());
changed to return builder3.ToString();
.
If you don't want to use any plugins (which means you can push it to GitHub directly without generating the site first), you can create a new file named image.html
in _includes
:
<figure class="image">
<img src="{{ include.url }}" alt="{{ include.description }}">
<figcaption>{{ include.description }}</figcaption>
</figure>
And then display the image from your markdown with:
{% include image.html url="/images/my-cat.jpg" description="My cat, Robert Downey Jr." %}
Use continue;
instead of break;
to enter the next iteration of the loop without executing any more of the contained code.
foreach (Item item in myItemsList)
{
if (item.Name == string.Empty)
{
// Display error message and move to next item in list. Skip/ignore all validation
// that follows beneath
continue;
}
if (item.Weight > 100)
{
// Display error message and move to next item in list. Skip/ignore all validation
// that follows beneath
continue;
}
}
Official docs are here, but they don't add very much color.
You don't need a CTE for this
UPDATE PEDI_InvoiceDetail
SET
DocTotal = v.DocTotal
FROM
PEDI_InvoiceDetail
inner join
(
SELECT InvoiceNumber, SUM(Sale + VAT) AS DocTotal
FROM PEDI_InvoiceDetail
GROUP BY InvoiceNumber
) v
ON PEDI_InvoiceDetail.InvoiceNumber = v.InvoiceNumber
You can read directly the value defined into strings.xml:
<resources>
<string name="hello">Hello StackOverflow!</string>
</resources>
and set into a variable:
String mymessage = getString(R.string.hello);
but we can define the string into the view:
<TextView
android:id="@+id/myTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/hello"/>
Vanilla JS solution:
var el = document.getElementById('changeProgramatic');
el.value='New Value'
el.dispatchEvent(new Event('change'));
Note that dispatchEvent
doesn't work in old IE (see: caniuse). So you should probably only use it on internal websites (not on websites having wide audience).
So as of 2019 you just might want to make sure your customers/audience don't use Windows XP (yes, some still do in 2019). You might want to use conditional comments to warn customers that you don't support old IE (pre IE 11 in this case), but note that conditional comments only work until IE9 (don't work in IE10). So you might want to use feature detection instead. E.g. you could do an early check for:
typeof document.body.dispatchEvent === 'function'
.
OK, the right answer definitely has to do something with the CPU cache. But to use the cache argument can be quite difficult, especially without data.
There are many answers, that led to a lot of discussion, but let's face it: Cache issues can be very complex and are not one dimensional. They depend heavily on the size of the data, so my question was unfair: It turned out to be at a very interesting point in the cache graph.
@Mysticial's answer convinced a lot of people (including me), probably because it was the only one that seemed to rely on facts, but it was only one "data point" of the truth.
That's why I combined his test (using a continuous vs. separate allocation) and @James' Answer's advice.
The graphs below shows, that most of the answers and especially the majority of comments to the question and answers can be considered completely wrong or true depending on the exact scenario and parameters used.
Note that my initial question was at n = 100.000. This point (by accident) exhibits special behavior:
It possesses the greatest discrepancy between the one and two loop'ed version (almost a factor of three)
It is the only point, where one-loop (namely with continuous allocation) beats the two-loop version. (This made Mysticial's answer possible, at all.)
The result using initialized data:
The result using uninitialized data (this is what Mysticial tested):
And this is a hard-to-explain one: Initialized data, that is allocated once and reused for every following test case of different vector size:
Every low-level performance related question on Stack Overflow should be required to provide MFLOPS information for the whole range of cache relevant data sizes! It's a waste of everybody's time to think of answers and especially discuss them with others without this information.
find / will do the trick
In Oracle 12c, you can run code both in either sequence below:
Where
Group By
Having
Or
Where
Having
Group by
The accepted answer via git merge will get the job done but leaves a messy commit hisotry, correct way should be 'rebase' via the following steps(assuming you want to keep your feature branch in sycn with develop before you do the final push before PR).
1 git fetch
from your feature branch (make sure the feature branch you are working on is update to date)
2 git rebase origin/develop
3 if any conflict shall arise, resolve them one by one
4 use git rebase --continue
once all conflicts are dealt with
5 git push --force
It means the text is stored as wchar_t
characters rather than plain old char
characters.
(I originally said it meant unicode. I was wrong about that. But it can be used for unicode.)
Tonny Madsen said it right, but sometimes this is too simplistic.
What if you want to be more selective in your replacements since not all replacements are correct for what you're trying to do?
First, do like he said:
Then:
Voilà!
References:
You should not use bash in this case to get rid of the output. Yum does have an option -q
which suppresses the output.
You'll most certainly also want to use -y
echo "Installing nano..."
yum -y -q install nano
To see all the options for yum, use man yum
.
If you look at the inheritance tree (in version 2.6), HTMLParser
inherits from SGMLParser
which inherits from ParserBase
which doesn't inherits from object
. I.e. HTMLParser is an old-style class.
About your checking with isinstance
, I did a quick test in ipython:
In [1]: class A: ...: pass ...: In [2]: isinstance(A, object) Out[2]: True
Even if a class is old-style class, it's still an instance of object
.
Strangely, so many answers, and all of them are using surrogates like JS and keyboard shortcuts instead of just using a selenium feature:
def newTab(driver, url="about:blank"):
wnd = driver.execute(selenium.webdriver.common.action_chains.Command.NEW_WINDOW)
handle = wnd["value"]["handle"]
driver.switch_to.window(handle)
driver.get(url) # changes the handle
return driver.current_window_handle
0755
= User:rwx
Group:r-x
World:r-x
0750
= User:rwx
Group:r-x
World:---
(i.e. World: no access)
r = read
w = write
x = execute (traverse for directories)
You can try this:
$( "#data" ).val([ "100", "101" ]);
Your suggestion would work, but using a Do loop might be a little more readable.
This is actually an idiom in C - instead of using a goto, you can have a do { } while (0) loop with a break statement if you want to bail out of the construct early.
Dim i
For i = 0 To 10
Do
If i = 4 Then Exit Do
WScript.Echo i
Loop While False
Next
As crush suggests, it looks a little better if you remove the extra indentation level.
Dim i
For i = 0 To 10: Do
If i = 4 Then Exit Do
WScript.Echo i
Loop While False: Next
You haven't shown your Car
type, but assuming you'd want the price of the first car, you could use:
public static void processCars(ArrayList<Car> cars) {
Car car = cars.get(0);
System.out.println(car.getPrice());
}
Note that I've changed the name of the list from car
to cars
- this is a list of cars, not a single car. (I've changed the method name in a similar way.)
If you only want the method to process a single car, you should change the parameter to be of type Car
:
public static void processCar(Car car)
and then call it like this:
// In the main method
processCar(cars.get(0));
If you do leave it as processing the whole list, it would be worth generalizing the parameter to List<Car>
- it's unlikely that you'll really require that it's an ArrayList<Car>
.
I had to store the time with the time-zone information in it, and was able to get queries working with the following format:
"SELECT * FROM events WHERE datetime(date_added) BETWEEN
datetime('2015-03-06 20:11:00 -04:00') AND datetime('2015-03-06 20:13:00 -04:00')"
The time is stored in the database as regular TEXT in the following format:
2015-03-06 20:12:15 -04:00
If this is the only handler, you can check to see if the event is null, if it isn't, the handler has been added.
I think you can safely call -= on the event with your handler even if it's not added (if not, you could catch it) -- to make sure it isn't in there before adding.
I like the approach and implemented it on server-side without doing any authentication related thing on front-end
My 'technique' on my latest app is.. the client doesn't care about Auth. Every single thing in the app requires a login first, so the server just always serves a login page unless an existing user is detected in the session. If session.user is found, the server just sends index.html. Bam :-o
Look for the comment by "Andrew Joslin".
Personally I think Thread.Sleep
is a poor implementation. It locks the UI etc. I personally like timer implementations since it waits then fires.
Usage: DelayFactory.DelayAction(500, new Action(() => { this.RunAction(); }));
//Note Forms.Timer and Timer() have similar implementations.
public static void DelayAction(int millisecond, Action action)
{
var timer = new DispatcherTimer();
timer.Tick += delegate
{
action.Invoke();
timer.Stop();
};
timer.Interval = TimeSpan.FromMilliseconds(millisecond);
timer.Start();
}
A pure css solution
<div id="outer-container">
<div id="scrollable">
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam in vulputate turpis. Curabitur a consectetur libero. Nulla ac velit nibh, ac lacinia nulla. In sed urna sit amet mauris vulputate viverra et et eros. Pellentesque laoreet est et neque euismod a bibendum velit laoreet. Nam gravida lectus nec purus porttitor porta. Vivamus tempor tempus auctor. Nam quis porttitor ligula. Vestibulum rutrum fermentum ligula eget luctus. Sed convallis iaculis lorem non adipiscing. Sed in egestas lectus. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Nunc dictum, lacus quis venenatis ultricies, turpis lorem bibendum dui, quis bibendum lacus ante commodo urna. Fusce ut sem mi, nec molestie tortor. Mauris eu leo diam. Nullam adipiscing, tortor eleifend pellentesque gravida, erat tellus vulputate orci, quis accumsan orci ipsum sed justo. Proin massa massa, pellentesque non tristique non, tristique vel dui. Vestibulum at metus at neque malesuada porta et vitae lectus.
</div>
<button id="social-float">The button</button>
</div>
<div>
Footer
</div>
</div>
And css here
#outer-container {
position: relative;
}
#scrollable {
height: 100px;
overflow-y: auto;
}
#social-float {
position: absolute;
bottom: 0px;
}
String s = "3.14";
float f = Float.parseFloat(s);
Add jQuery library before your script which uses $ or jQuery so that $ can be identified in scripts.
<script src="http://code.jquery.com/jquery-1.11.0.min.js"></script>
use sep='\s*,\s*'
so that you will take care of spaces in column-names:
transactions = pd.read_csv('transactions.csv', sep=r'\s*,\s*',
header=0, encoding='ascii', engine='python')
alternatively you can make sure that you don't have unquoted spaces in your CSV file and use your command (unchanged)
prove:
print(transactions.columns.tolist())
Output:
['product_id', 'customer_id', 'store_id', 'promotion_id', 'month_of_year', 'quarter', 'the_year', 'store_sales', 'store_cost', 'unit_sales', 'fact_count']
If you're storing phone numbers in a float typed column (which is a bad idea) then they are presumably all integers and could be cast to int before casting to nvarchar.
So instead of:
select cast(cast(1234567890 as float) as nvarchar(50))
1.23457e+009
You would use:
select cast(cast(cast(1234567890 as float) as int) as nvarchar(50))
1234567890
In these examples the innermost cast(1234567890 as float)
is used in place of selecting a value from the appropriate column.
I really recommend that you not store phone numbers in floats though!
What if the phone number starts with a zero?
select cast(0100884555 as float)
100884555
Whoops! We just stored an incorrect phone number...
/(.+)/(\d{4}-\d{2}-\d{2})-(\d+)(/.*)?$
1st Capturing Group (.+)
.+
matches any character (except for line terminators)
+
Quantifier — Matches between one and unlimited times, as many times as possible, giving back as needed (greedy)2nd Capturing Group (\d{4}-\d{2}-\d{2})
\d{4}
matches a digit (equal to [0-9]
)
{4}
Quantifier — Matches exactly 4 times-
matches the character -
literally (case sensitive)
\d{2}
matches a digit (equal to [0-9]
)
{2}
Quantifier — Matches exactly 2 times-
matches the character -
literally (case sensitive)
\d{2}
matches a digit (equal to [0-9]
)
{2}
Quantifier — Matches exactly 2 times-
matches the character -
literally (case sensitive)
3rd Capturing Group (\d+)
\d+
matches a digit (equal to [0-9]
)
+
Quantifier — Matches between one and unlimited times, as many times as possible, giving back as needed (greedy)4th Capturing Group (.*)?
?
Quantifier — Matches between zero and one times, as many times as possible, giving back as needed (greedy)
.*
matches any character (except for line terminators)
*
Quantifier — Matches between zero and unlimited times, as many times as possible, giving back as needed (greedy)$
asserts position at the end of the string
Add following trait to your project and append it to your model class as a trait. This is helpful, because this adds functionality to use multiple pivots. Probably someone can clean this up a little and improve on it ;)
namespace App\Traits;
trait AppTraits
{
/**
* Create pivot array from given values
*
* @param array $entities
* @param array $pivots
* @return array combined $pivots
*/
public function combinePivot($entities, $pivots = [])
{
// Set array
$pivotArray = [];
// Loop through all pivot attributes
foreach ($pivots as $pivot => $value) {
// Combine them to pivot array
$pivotArray += [$pivot => $value];
}
// Get the total of arrays we need to fill
$total = count($entities);
// Make filler array
$filler = array_fill(0, $total, $pivotArray);
// Combine and return filler pivot array with data
return array_combine($entities, $filler);
}
}
Model:
namespace App;
use Illuminate\Database\Eloquent\Model;
class Example extends Model
{
use Traits\AppTraits;
// ...
}
Usage:
// Get id's
$entities = [1, 2, 3];
// Create pivots
$pivots = [
'price' => 634,
'name' => 'Example name',
];
// Combine the ids and pivots
$combination = $model->combinePivot($entities, $pivots);
// Sync the combination with the related model / pivot
$model->relation()->sync($combination);
Delegates are extremely useful when wanting to declare a block of code that you want to pass around. For example when using a generic retry mechanism.
Pseudo:
function Retry(Delegate func, int numberOfTimes)
try
{
func.Invoke();
}
catch { if(numberOfTimes blabla) func.Invoke(); etc. etc. }
Or when you want to do late evaluation of code blocks, like a function where you have some Transform
action, and want to have a BeforeTransform
and an AfterTransform
action that you can evaluate within your Transform function, without having to know whether the BeginTransform
is filled, or what it has to transform.
And of course when creating event handlers. You don't want to evaluate the code now, but only when needed, so you register a delegate that can be invoked when the event occurs.
const str = "abc's@thy#^g&test#s";
console.log(str.replace(/[^a-zA-Z ]/g, ""));
_x000D_
The functionality of map
and filter
was intentionally changed to return iterators, and reduce was removed from being a built-in and placed in functools.reduce
.
So, for filter
and map
, you can wrap them with list()
to see the results like you did before.
>>> def f(x): return x % 2 != 0 and x % 3 != 0
...
>>> list(filter(f, range(2, 25)))
[5, 7, 11, 13, 17, 19, 23]
>>> def cube(x): return x*x*x
...
>>> list(map(cube, range(1, 11)))
[1, 8, 27, 64, 125, 216, 343, 512, 729, 1000]
>>> import functools
>>> def add(x,y): return x+y
...
>>> functools.reduce(add, range(1, 11))
55
>>>
The recommendation now is that you replace your usage of map and filter with generators expressions or list comprehensions. Example:
>>> def f(x): return x % 2 != 0 and x % 3 != 0
...
>>> [i for i in range(2, 25) if f(i)]
[5, 7, 11, 13, 17, 19, 23]
>>> def cube(x): return x*x*x
...
>>> [cube(i) for i in range(1, 11)]
[1, 8, 27, 64, 125, 216, 343, 512, 729, 1000]
>>>
They say that for loops are 99 percent of the time easier to read than reduce, but I'd just stick with functools.reduce
.
Edit: The 99 percent figure is pulled directly from the What’s New In Python 3.0 page authored by Guido van Rossum.
Uninstall Java (via Control Panel / Programs and Features)
Install Java JRE 7 --> OFFLINE <--
Configure JAVA_HOME and Path = %JAVA_HOME%/bin;%PATH%
For TF2.x
, you can do like this.
import tensorflow as tf
with tf.compat.v1.Session() as sess:
hello = tf.constant('hello world')
print(sess.run(hello))
>>> b'hello world
div#wrapper {
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%,-50%);
}
I had the same problem and spent hours in finding the solution. I tried to click a cell at the bottom of a long ngGrid using protractor. Here is a snapshot of my ngGrid html:
....many rows here..
<!- row in renderedRows ->
<!- column in renderedColumns ->
<div ...> <a ngclick="selectRow(row)"...>the test link 100000</a>...
....
all clicking function did not work. The solution is to use evaluate in the element's current scope:
element(by.cssContainingText("a", "the test link 100000"))
.evaluate("selectRow(row)")
You can try this force-download script. Even if you don't use it, it'll probably point you in the right direction:
<?php
$filename = $_GET['file'];
// required for IE, otherwise Content-disposition is ignored
if(ini_get('zlib.output_compression'))
ini_set('zlib.output_compression', 'Off');
// addition by Jorg Weske
$file_extension = strtolower(substr(strrchr($filename,"."),1));
if( $filename == "" )
{
echo "<html><title>eLouai's Download Script</title><body>ERROR: download file NOT SPECIFIED. USE force-download.php?file=filepath</body></html>";
exit;
} elseif ( ! file_exists( $filename ) )
{
echo "<html><title>eLouai's Download Script</title><body>ERROR: File not found. USE force-download.php?file=filepath</body></html>";
exit;
};
switch( $file_extension )
{
case "pdf": $ctype="application/pdf"; break;
case "exe": $ctype="application/octet-stream"; break;
case "zip": $ctype="application/zip"; break;
case "doc": $ctype="application/msword"; break;
case "xls": $ctype="application/vnd.ms-excel"; break;
case "ppt": $ctype="application/vnd.ms-powerpoint"; break;
case "gif": $ctype="image/gif"; break;
case "png": $ctype="image/png"; break;
case "jpeg":
case "jpg": $ctype="image/jpg"; break;
default: $ctype="application/octet-stream";
}
header("Pragma: public"); // required
header("Expires: 0");
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header("Cache-Control: private",false); // required for certain browsers
header("Content-Type: $ctype");
// change, added quotes to allow spaces in filenames, by Rajkumar Singh
header("Content-Disposition: attachment; filename=\"".basename($filename)."\";" );
header("Content-Transfer-Encoding: binary");
header("Content-Length: ".filesize($filename));
readfile("$filename");
exit();
Just use \" instead ", it should resolve the issue.
Sudo is a Unix specific command designed to allow a user to carry out administrative tasks with the appropriate permissions. Windows doesn't not have (need?) this.
Yes, windows don't have sudo
on its terminal. Try using pip
instead.
pip
using the steps here.pip install [package name]
on the terminal. In this case, it may be pdfkit
or wkhtmltopdf
.You can do this in layout file:
android:id="@+id/listViewContent"
android:layout_width="wrap_content"
android:layout_height="381dp"
android:stackFromBottom="true"
android:transcriptMode="alwaysScroll">
You can try this:
/*iPad landscape oriented styles */
@media only screen and (device-width:768px)and (orientation:landscape){
.yourstyle{
}
}
/*iPad Portrait oriented styles */
@media only screen and (device-width:768px)and (orientation:portrait){
.yourstyle{
}
}
I've updated @Cameron's answer to include some safety checks against Convert
typed lambda expressions:
PropertyInfo GetPropertyName<TSource, TProperty>(
Expression<Func<TSource, TProperty>> propertyLambda)
{
var body = propertyLambda.Body;
if (!(body is MemberExpression member)
&& !(body is UnaryExpression unary
&& (member = unary.Operand as MemberExpression) != null))
throw new ArgumentException($"Expression '{propertyLambda}' " +
"does not refer to a property.");
if (!(member.Member is PropertyInfo propInfo))
throw new ArgumentException($"Expression '{propertyLambda}' " +
"refers to a field, not a property.");
var type = typeof(TSource);
if (!propInfo.DeclaringType.GetTypeInfo().IsAssignableFrom(type.GetTypeInfo()))
throw new ArgumentException($"Expresion '{propertyLambda}' " +
"refers to a property that is not from type '{type}'.");
return propInfo;
}
try
driver.executeScript("window.location.href='http://www.sina.com.cn'")
this statement will return immediately.
And after that , you can add a WebDriverWait with timeout to check if the page title or any element is ok.
Hope this will help you.
Google introduced In-app updates feature, (https://developer.android.com/guide/app-bundle/in-app-updates) it works on Lollipop+ and gives you the ability to ask the user for an update with a nice dialog (FLEXIBLE) or with mandatory full-screen message (IMMEDIATE).
Here is how Flexible update will look like:
and here is Immedtiate update flow:
You can check my answer here https://stackoverflow.com/a/56808529/5502121 to get the complete sample code of implementing both Flexible and Immediate update flows. Hope it helps!
I was making my own version of a Checkbox to control a DataGridViewCheckBoxColumn when I saw this post wasn't actually answered. To set the checked state of a DataGridViewCheckBoxCell use:
foreach (DataGridViewRow row in dataGridView1.Rows)
{
dataGridView1.Rows[row.Index].SetValues(true);
}
For anyone else trying to accomplish the same thing, here is what I came up with.
This makes the two controls behave like the checkbox column in Gmail. It keeps functionality for both mouse and keyboard.
using System;
using System.Windows.Forms;
namespace Check_UnCheck_All
{
public partial class Check_UnCheck_All : Form
{
public Check_UnCheck_All()
{
InitializeComponent();
dataGridView1.RowCount = 10;
dataGridView1.AllowUserToAddRows = false;
this.dataGridView1.CellContentClick += new System.Windows.Forms.DataGridViewCellEventHandler(this.dgvApps_CellContentClick);
this.dataGridView1.CellMouseUp += new System.Windows.Forms.DataGridViewCellMouseEventHandler(this.myDataGrid_OnCellMouseUp);
this.dataGridView1.CellValueChanged += new System.Windows.Forms.DataGridViewCellEventHandler(this.myDataGrid_OnCellValueChanged);
this.checkBox1.Click += new System.EventHandler(this.checkBox1_Click);
}
public int chkInt = 0;
public bool chked = false;
public void myDataGrid_OnCellValueChanged(object sender, DataGridViewCellEventArgs e)
{
if (e.ColumnIndex == dataGridView1.Rows[0].Index && e.RowIndex != -1)
{
DataGridViewCheckBoxCell chk = dataGridView1.Rows[e.RowIndex].Cells[0] as DataGridViewCheckBoxCell;
if (Convert.ToBoolean(chk.Value) == true) chkInt++;
if (Convert.ToBoolean(chk.Value) == false) chkInt--;
if (chkInt < dataGridView1.Rows.Count && chkInt > 0)
{
checkBox1.CheckState = CheckState.Indeterminate;
chked = true;
}
else if (chkInt == 0)
{
checkBox1.CheckState = CheckState.Unchecked;
chked = false;
}
else if (chkInt == dataGridView1.Rows.Count)
{
checkBox1.CheckState = CheckState.Checked;
chked = true;
}
}
}
public void myDataGrid_OnCellMouseUp(object sender, DataGridViewCellMouseEventArgs e)
{
// End of edition on each click on column of checkbox
if (e.ColumnIndex == dataGridView1.Rows[0].Index && e.RowIndex != -1)
{
dataGridView1.EndEdit();
}
dataGridView1.BeginEdit(true);
}
public void dgvApps_CellContentClick(object sender, DataGridViewCellEventArgs e)
{
if (dataGridView1.CurrentCell.GetType() == typeof(DataGridViewCheckBoxCell))
{
if (dataGridView1.CurrentCell.IsInEditMode)
{
if (dataGridView1.IsCurrentCellDirty)
{
dataGridView1.EndEdit();
}
}
dataGridView1.BeginEdit(true);
}
}
public void checkBox1_Click(object sender, EventArgs e)
{
if (chked == true)
{
foreach (DataGridViewRow row in dataGridView1.Rows)
{
DataGridViewCheckBoxCell chk = (DataGridViewCheckBoxCell)row.Cells[0];
if (chk.Value == chk.TrueValue)
{
chk.Value = chk.FalseValue;
}
else
{
chk.Value = chk.TrueValue;
}
}
chked = false;
chkInt = 0;
return;
}
if (chked == false)
{
foreach (DataGridViewRow row in dataGridView1.Rows)
{
dataGridView1.Rows[row.Index].SetValues(true);
}
chked = true;
chkInt = dataGridView1.Rows.Count;
}
}
}
}
Your question is how to randomize a list. This means:
A large number of the answers posted for this question do NOT satisfy the two requirements above for being "random".
Here's a compact, non-biased pseudo-random function following the Fisher-Yates shuffle method.
public static void Shuffle<T>(this IList<T> list, Random rnd)
{
for (var i = list.Count-1; i > 0; i--)
{
var randomIndex = rnd.Next(i + 1); //maxValue (i + 1) is EXCLUSIVE
list.Swap(i, randomIndex);
}
}
public static void Swap<T>(this IList<T> list, int indexA, int indexB)
{
var temp = list[indexA];
list[indexA] = list[indexB];
list[indexB] = temp;
}
I assume this is a response to my answer to your earlier question. In programming, a magic number is an embedded numerical constant that appears without explanation. If it appears in two distinct locations, it can lead to circumstances where one instance is changed and not another. For both these reasons, it's important to isolate and define the numerical constants outside the places where they're used.
void QWidget::setWindowTitle ( const QString & )
EDIT: If you are using QtDesigner, on the property tab, there is an editable property called windowTitle which can be found under the QWidget section. The property tab can usually be found on the lower right part of the designer window.
You can try to use as well this functions to capture StdErr StdOut and return code.
def runShell(String command){
def responseCode = sh returnStatus: true, script: "${command} &> tmp.txt"
def output = readFile(file: "tmp.txt")
if (responseCode != 0){
println "[ERROR] ${output}"
throw new Exception("${output}")
}else{
return "${output}"
}
}
Notice:
&>name means 1>name 2>name -- redirect stdout and stderr to the file name
One way to do it if the file is not very big is to load all the lines into an array:
string[] lines = File.ReadAllLines("filename.txt");
string[] newLines = RemoveUnnecessaryLine(lines);
File.WriteAllLines("filename.txt", newLines);
Just catch the submit event and prevent that, then do ajax
$(document).ready(function () {
$('#myform').on('submit', function(e) {
e.preventDefault();
$.ajax({
url : $(this).attr('action') || window.location.pathname,
type: "GET",
data: $(this).serialize(),
success: function (data) {
$("#form_output").html(data);
},
error: function (jXHR, textStatus, errorThrown) {
alert(errorThrown);
}
});
});
});
After trying and searching different solutions, I think the most safest way is adding the following code at the end of the Podfile
post_install do |pi|
pi.pods_project.targets.each do |t|
t.build_configurations.each do |bc|
bc.build_settings['ARCHS[sdk=iphonesimulator*]'] = `uname -m`
end
end
end
This way you only override the iOS simulator's compiler architecture as your current cpu's architecture. Compared to others, this solution will also work on computers with Apple Silicon.
Assuming you are on Linux, check if php-fpm is running by searching through the process list:
ps aux | grep php-fpm
If running over IP (as opposed to over Unix socket) then you can also check for the port:
netstat -an | grep :9000
Or using nmap:
nmap localhost -p 9000
Lastly, I've read that you can request the status, but in my experience this has proven unreliable:
/etc/init.d/php5-fpm status
long
is equivalent to long int
, just as short
is equivalent to short int
. A long int
is a signed integral type that is at least 32 bits, while a long long
or long long int
is a signed integral type is at least 64 bits.
This doesn't necessarily mean that a long long
is wider than a long
. Many platforms / ABIs use the LP64
model - where long
(and pointers) are 64 bits wide. Win64 uses the LLP64
, where long
is still 32 bits, and long long
(and pointers) are 64 bits wide.
There's a good summary of 64-bit data models here.
long double
doesn't guarantee much other than it will be at least as wide as a double
.
Make sure to download these from here:
Also create PATH
enviroment variable on you computer like this (if it doesn't exist already):
PATH
variable doesn't exist among "User variables" click New
(Variable name: PATH, Variable value : C:\Program Files\Java\jdk1.8.0\bin;
<-- please check out the right version, this may differ as Oracle keeps updating Java). ;
in the end enables assignment of multiple values to PATH
variable.To be sure that everything works, open CMD Prompt and type: java -version
to check for Java version and javac
to be sure that compiler responds.
I hope this helps. Good luck!
If you're doing this on Windows without one of the WAMP stacks, here's how to get this going
C:\php
. Composer's installer found it there without any additional promptingphp.ini
by default. Instead, you'll see two files, as noted below. Rename one to php.ini
or copy it into php.ini
.
Open your php.ini
file and remove the semicolon from this line (you might want to uncomment other things as well but this line is the only one necessary for Composer)
;extension=php_openssl.dll
That should be all you need to do. The Composer installer should do everything else you need from here.
Zonble has already provided an excellent answer.
I thought it may be useful to include a short code snippet for adding a UIView
to the tableview cell that will present as the selected background view.
cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:CellIdentifier] autorelease];
UIView *selectionColor = [[UIView alloc] init];
selectionColor.backgroundColor = [UIColor colorWithRed:(245/255.0) green:(245/255.0) blue:(245/255.0) alpha:1];
cell.selectedBackgroundView = selectionColor;
UITableViewCell
selectedBackgroundView
to be the UIView
that I created with my chosen background colourThis worked well for me. Thanks for the tip Zonble.
In support to @thorinkor's answer I would extend my answer to use not only @Table (name = "table_name") annotation for entity, but also every child variable of entity class should be annotated with @Column(name = "col_name"). This results into seamless updation to the table on the go.
For those who are looking for a Java class based hibernate config, the rule applies in java based configurations also(NewHibernateUtil). Hope it helps someone else.
I had from a totaly different reason the same notice "Value does not fall within the expected range" from the Visual studio 2008 while trying to use the: Tools -> Windows Embedded Silverlight Tools -> Update Silverlight For Windows Embedded Project.
After spending many ohurs I found out that the problem was that there wasn't a resource file and the update tool looks for the .RC file
Therefor the solution is to add to the resource folder a .RC file and than it works perfectly. I hope it will help someone out there
when call funtion, I use:
findByPlaceContaining("%" + place);
or:
findByPlaceContaining(place + "%");
or:
findByPlaceContaining("%" + place + "%");
As @Alex McMillan mentioned, use state to dictate what should be rendered in the dom.
In the example below I have an input field and I want to add a second one when the user clicks the button, the onClick event handler calls handleAddSecondInput( ) which changes inputLinkClicked to true. I am using a ternary operator to check for the truthy state, which renders the second input field
class HealthConditions extends React.Component {
constructor(props) {
super(props);
this.state = {
inputLinkClicked: false
}
}
handleAddSecondInput() {
this.setState({
inputLinkClicked: true
})
}
render() {
return(
<main id="wrapper" className="" data-reset-cookie-tab>
<div id="content" role="main">
<div className="inner-block">
<H1Heading title="Tell us about any disabilities, illnesses or ongoing conditions"/>
<InputField label="Name of condition"
InputType="text"
InputId="id-condition"
InputName="condition"
/>
{
this.state.inputLinkClicked?
<InputField label=""
InputType="text"
InputId="id-condition2"
InputName="condition2"
/>
:
<div></div>
}
<button
type="button"
className="make-button-link"
data-add-button=""
href="#"
onClick={this.handleAddSecondInput}
>
Add a condition
</button>
<FormButton buttonLabel="Next"
handleSubmit={this.handleSubmit}
linkto={
this.state.illnessOrDisability === 'true' ?
"/404"
:
"/add-your-details"
}
/>
<BackLink backLink="/add-your-details" />
</div>
</div>
</main>
);
}
}
You can use T-SQL to convert the date before it gets to your .NET program. This often is simpler if you don't need to do additional date conversion in your .NET program.
DECLARE @Date DATETIME = Getdate()
DECLARE @DateInt INT = CONVERT(VARCHAR(30), @Date, 112)
DECLARE @TimeInt INT = REPLACE(CONVERT(VARCHAR(30), @Date, 108), ':', '')
DECLARE @DateTimeInt BIGINT = CONVERT(VARCHAR(30), @Date, 112) + REPLACE(CONVERT(VARCHAR(30), @Date, 108), ':', '')
SELECT @Date as Date, @DateInt DateInt, @TimeInt TimeInt, @DateTimeInt DateTimeInt
Date DateInt TimeInt DateTimeInt
------------------------- ----------- ----------- --------------------
2013-01-07 15:08:21.680 20130107 150821 20130107150821
if any interested I've made a typescript version:
interface IResizeImageOptions {
maxSize: number;
file: File;
}
const resizeImage = (settings: IResizeImageOptions) => {
const file = settings.file;
const maxSize = settings.maxSize;
const reader = new FileReader();
const image = new Image();
const canvas = document.createElement('canvas');
const dataURItoBlob = (dataURI: string) => {
const bytes = dataURI.split(',')[0].indexOf('base64') >= 0 ?
atob(dataURI.split(',')[1]) :
unescape(dataURI.split(',')[1]);
const mime = dataURI.split(',')[0].split(':')[1].split(';')[0];
const max = bytes.length;
const ia = new Uint8Array(max);
for (var i = 0; i < max; i++) ia[i] = bytes.charCodeAt(i);
return new Blob([ia], {type:mime});
};
const resize = () => {
let width = image.width;
let height = image.height;
if (width > height) {
if (width > maxSize) {
height *= maxSize / width;
width = maxSize;
}
} else {
if (height > maxSize) {
width *= maxSize / height;
height = maxSize;
}
}
canvas.width = width;
canvas.height = height;
canvas.getContext('2d').drawImage(image, 0, 0, width, height);
let dataUrl = canvas.toDataURL('image/jpeg');
return dataURItoBlob(dataUrl);
};
return new Promise((ok, no) => {
if (!file.type.match(/image.*/)) {
no(new Error("Not an image"));
return;
}
reader.onload = (readerEvent: any) => {
image.onload = () => ok(resize());
image.src = readerEvent.target.result;
};
reader.readAsDataURL(file);
})
};
and here's the javascript result:
var resizeImage = function (settings) {
var file = settings.file;
var maxSize = settings.maxSize;
var reader = new FileReader();
var image = new Image();
var canvas = document.createElement('canvas');
var dataURItoBlob = function (dataURI) {
var bytes = dataURI.split(',')[0].indexOf('base64') >= 0 ?
atob(dataURI.split(',')[1]) :
unescape(dataURI.split(',')[1]);
var mime = dataURI.split(',')[0].split(':')[1].split(';')[0];
var max = bytes.length;
var ia = new Uint8Array(max);
for (var i = 0; i < max; i++)
ia[i] = bytes.charCodeAt(i);
return new Blob([ia], { type: mime });
};
var resize = function () {
var width = image.width;
var height = image.height;
if (width > height) {
if (width > maxSize) {
height *= maxSize / width;
width = maxSize;
}
} else {
if (height > maxSize) {
width *= maxSize / height;
height = maxSize;
}
}
canvas.width = width;
canvas.height = height;
canvas.getContext('2d').drawImage(image, 0, 0, width, height);
var dataUrl = canvas.toDataURL('image/jpeg');
return dataURItoBlob(dataUrl);
};
return new Promise(function (ok, no) {
if (!file.type.match(/image.*/)) {
no(new Error("Not an image"));
return;
}
reader.onload = function (readerEvent) {
image.onload = function () { return ok(resize()); };
image.src = readerEvent.target.result;
};
reader.readAsDataURL(file);
});
};
usage is like:
resizeImage({
file: $image.files[0],
maxSize: 500
}).then(function (resizedImage) {
console.log("upload resized image")
}).catch(function (err) {
console.error(err);
});
or (async
/await
):
const config = {
file: $image.files[0],
maxSize: 500
};
const resizedImage = await resizeImage(config)
console.log("upload resized image")
If you reorder your code this way, it should work:
SmtpClient client = new SmtpClient();
client.UseDefaultCredentials = false;
client.Credentials = new System.Net.NetworkCredential(mailOut, pswMailOut);
client.Port = 587; // 25 587
client.Host = "smtp.office365.com";
client.DeliveryMethod = SmtpDeliveryMethod.Network;
client.EnableSsl = true;
MailMessage mail = new MailMessage();
mail.From = new MailAddress(mailOut, displayNameMailOut);
mail.To.Add(new MailAddress(mailOfTestDestine));
mail.Subject = "A special subject";
mail.Body = sb.ToString();
client.Send(mail);
You can use long
type or Int64
select left(col, charindex(' ', col) - 1)
Use the following:
SELECT * FROM `calendar` WHERE DATE(startTime) = '2010-04-29'
Just for reference I have a 2 million record table, I ran a similar query. Salils answer took 4.48 seconds, the above took 2.25 seconds.
So if the table is BIG I would suggest this rather.
Most mocking frameworks (Moq and RhinoMocks included) generate proxy classes as a substitute for your mocked class, and override the virtual methods with behavior that you define. Because of this, you can only mock interfaces, or virtual methods on concrete or abstract classes. Additionally, if you're mocking a concrete class, you almost always need to provide a parameterless constructor so that the mocking framework knows how to instantiate the class.
Why the aversion to creating interfaces in your code?
Using fgetc(fp)
only to be able to call strcpy(buffer,c);
doesn't seem right.
You could simply build this buffer on your own:
char buffer[MAX_SIZE_OF_MY_BUFFER];
int i = 0;
char ch;
while (i < MAX_SIZE_OF_MY_BUFFER - 1 && (ch = fgetc(fp)) != EOF) {
buffer[i++] = ch;
}
buffer[i] = '\0'; // terminating character
Note that this relies on the fact that you will read less than MAX_SIZE_OF_MY_BUFFER
characters
Another solution is to migrate the database to e.g 2012 when you "export" the DB from e.g. Sql Server manager 2014. This is done in menu Tasks-> generate scripts when right-click on DB. Just follow this instruction:
https://www.mssqltips.com/sqlservertip/2810/how-to-migrate-a-sql-server-database-to-a-lower-version/
It generates an scripts with everything and then in your SQL server manager e.g. 2012 run the script as specified in the instruction. I have performed the test with success.
Your code is fine. What you are seeing is a linker issue.
If you put your code in a single file like this:
#include <iostream>
#include <string>
using namespace std;
string trim(const string& str)
{
size_t first = str.find_first_not_of(' ');
if (string::npos == first)
{
return str;
}
size_t last = str.find_last_not_of(' ');
return str.substr(first, (last - first + 1));
}
int main() {
string s = "abc ";
cout << trim(s);
}
then do g++ test.cc
and run a.out, you will see it works.
You should check if the file that contains the trim
function is included in the link stage of your compilation process.
I have found this error can occur with traditional ASP.NET website when you create the Controller in non App_Code directory (sometimes Visual Studio prevents this).
It sets the file type to "Compile" whereas any code added to "App_Code" is set to "Content". If you copy or move the file into App_Code then it is still set as "Compile".
I suspect it has something to with Website Project operation as website projects do not have any build operation.Clearing the bin folder and changing to "Content" seems to fix it.
I know this is an OLD Question and there are multiple answers. How ever according to the docs and my experience on laravel below is the good "Eloquent way" of handling things
In your model, add a mutator/Getter like this
public function getCreatedAtTimeAttribute()
{
return $this->created_at->toDateString();
}
Another way is to cast the columns
in your model, populate the $cast
array
$casts = [
'created_at' => 'string'
]
The catch here is that you won't be able to use the Carbon on this model again since Eloquent will always cast the column into string
Hope it helps :)
I have users who have not been completing all required data.
<cfset unloadCheck=0>//a ColdFusion precheck in my page generation to see if unload check is needed
var erMsg="";
$(document).ready(function(){
<cfif q.myData eq "">
<cfset unloadCheck=1>
$("#myInput").change(function(){
verify(); //function elsewhere that checks all fields and populates erMsg with error messages for any fail(s)
if(erMsg=="") window.onbeforeunload = null; //all OK so let them pass
else window.onbeforeunload = confirmExit(); //borrowed from Jantimon above;
});
});
<cfif unloadCheck><!--- if any are outstanding, set the error message and the unload alert --->
verify();
window.onbeforeunload = confirmExit;
function confirmExit() {return "Data is incomplete for this Case:"+erMsg;}
</cfif>
try this:
.button input, .button a {
//css here
}
That will apply the style to all a tags nested inside of <p class="button"></p>
I used a two step process to change rows with "blank" values to "Null" values as place holders.
UPDATE [TableName] SET [TableName].[ColumnName] = "0"
WHERE ((([TableName].[ColumnName])=""));
UPDATE [TableName] SET [TableName].[ColumnName] = "Null"
WHERE ((([TableName].[ColumnName])="0"));
A very very good document regarding this topic is Troubleshooting Guide for Java from (originally) Sun. See the chapter "Troubleshooting System Crashes" for information about hs_err_pid*
Files.
See Appendix C - Fatal Error Log
Per the guide, by default the file will be created in the working directory of the process if possible, or in the system temporary directory otherwise. A specific location can be chosen by passing in the -XX:ErrorFile product flag. It says:
If the -XX:ErrorFile= file flag is not specified, the system attempts to create the file in the working directory of the process. In the event that the file cannot be created in the working directory (insufficient space, permission problem, or other issue), the file is created in the temporary directory for the operating system.
If you want to do it in database:
Set the default value in database (sql server sample):
ALTER TABLE [TABLE_NAME] ADD CONSTRAINT [CONSTRAINT_NAME] DEFAULT (newid()) FOR [COLUMN_NAME]
Mapping hibernate file:
<hibernate-mapping ....
...
<property name="fieldName" column="columnName" type="Guid" access="field" not-null="false" insert="false" update="false" />
...
See, the key is insert="false" update="false"
Dispatching blocks to the main queue from the main thread can be useful. It gives the main queue a chance to handle other blocks that have been queued so that you're not simply blocking everything else from executing.
For example you could write an essentially single threaded server that nonetheless handles many concurrent connections. As long as no individual block in the queue takes too long the server stays responsive to new requests.
If your program does nothing but spend its whole life responding to events then this can be quite natural. You just set up your event handlers to run on the main queue and then call dispatch_main(), and you may not need to worry about thread safety at all.
There are two widely-used memory allocation techniques: automatic allocation and dynamic allocation. Commonly, there is a corresponding region of memory for each: the stack and the heap.
The stack always allocates memory in a sequential fashion. It can do so because it requires you to release the memory in the reverse order (First-In, Last-Out: FILO). This is the memory allocation technique for local variables in many programming languages. It is very, very fast because it requires minimal bookkeeping and the next address to allocate is implicit.
In C++, this is called automatic storage because the storage is claimed automatically at the end of scope. As soon as execution of current code block (delimited using {}
) is completed, memory for all variables in that block is automatically collected. This is also the moment where destructors are invoked to clean up resources.
The heap allows for a more flexible memory allocation mode. Bookkeeping is more complex and allocation is slower. Because there is no implicit release point, you must release the memory manually, using delete
or delete[]
(free
in C). However, the absence of an implicit release point is the key to the heap's flexibility.
Even if using the heap is slower and potentially leads to memory leaks or memory fragmentation, there are perfectly good use cases for dynamic allocation, as it's less limited.
Two key reasons to use dynamic allocation:
You don't know how much memory you need at compile time. For instance, when reading a text file into a string, you usually don't know what size the file has, so you can't decide how much memory to allocate until you run the program.
You want to allocate memory which will persist after leaving the current block. For instance, you may want to write a function string readfile(string path)
that returns the contents of a file. In this case, even if the stack could hold the entire file contents, you could not return from a function and keep the allocated memory block.
In C++ there's a neat construct called a destructor. This mechanism allows you to manage resources by aligning the lifetime of the resource with the lifetime of a variable. This technique is called RAII and is the distinguishing point of C++. It "wraps" resources into objects. std::string
is a perfect example. This snippet:
int main ( int argc, char* argv[] )
{
std::string program(argv[0]);
}
actually allocates a variable amount of memory. The std::string
object allocates memory using the heap and releases it in its destructor. In this case, you did not need to manually manage any resources and still got the benefits of dynamic memory allocation.
In particular, it implies that in this snippet:
int main ( int argc, char* argv[] )
{
std::string * program = new std::string(argv[0]); // Bad!
delete program;
}
there is unneeded dynamic memory allocation. The program requires more typing (!) and introduces the risk of forgetting to deallocate the memory. It does this with no apparent benefit.
Basically, the last paragraph sums it up. Using automatic storage as often as possible makes your programs:
In the referenced question, there are additional concerns. In particular, the following class:
class Line {
public:
Line();
~Line();
std::string* mString;
};
Line::Line() {
mString = new std::string("foo_bar");
}
Line::~Line() {
delete mString;
}
Is actually a lot more risky to use than the following one:
class Line {
public:
Line();
std::string mString;
};
Line::Line() {
mString = "foo_bar";
// note: there is a cleaner way to write this.
}
The reason is that std::string
properly defines a copy constructor. Consider the following program:
int main ()
{
Line l1;
Line l2 = l1;
}
Using the original version, this program will likely crash, as it uses delete
on the same string twice. Using the modified version, each Line
instance will own its own string instance, each with its own memory and both will be released at the end of the program.
Extensive use of RAII is considered a best practice in C++ because of all the reasons above. However, there is an additional benefit which is not immediately obvious. Basically, it's better than the sum of its parts. The whole mechanism composes. It scales.
If you use the Line
class as a building block:
class Table
{
Line borders[4];
};
Then
int main ()
{
Table table;
}
allocates four std::string
instances, four Line
instances, one Table
instance and all the string's contents and everything is freed automagically.
Apparently, the SSH server on Raspbian is now disabled by default. If there is no server listening for connections, it will not accept them. You can manually enable the SSH server according to this raspberrypi.org tutorial :
As of the November 2016 release, Raspbian has the SSH server disabled by default.
There are now multiple ways to enable it. Choose one:
- Launch
Raspberry Pi Configuration
from thePreferences
menu- Navigate to the
Interfaces
tab- Select
Enabled
next toSSH
- Click
OK
raspi-config
- Enter
sudo raspi-config
in a terminal window- Select
Interfacing Options
- Navigate to and select
SSH
- Choose
Yes
- Select
Ok
- Choose
Finish
systemctl
sudo systemctl enable ssh sudo systemctl start ssh
For headless setup, SSH can be enabled by placing a file named
ssh
, without any extension, onto the boot partition of the SD card. When the Pi boots, it looks for thessh
file. If it is found, SSH is enabled, and the file is deleted. The content of the file does not matter: it could contain text, or nothing at all.
Simply use classList.contains()
:
if (document.body.classList.contains('thatClass')) {
// do some stuff
}
Other uses of classList
:
document.body.classList.add('thisClass');
// $('body').addClass('thisClass');
document.body.classList.remove('thatClass');
// $('body').removeClass('thatClass');
document.body.classList.toggle('anotherClass');
// $('body').toggleClass('anotherClass');
Browser Support:
In my case, I was producing multiple products from the same project. For one of the products, the main.m
file imported a header file from another folder under the same project. But that file was not included in "Complied Sources" under "Build Phase". This caused a linker error.
After carefully comparing the "Build Phases" settings for a product that could be built successfully, I realized that the .m
file of the header needs to be included in the list of "Compiled Source". My issue was resolved after adding that file. Attaching a picture for clarity. The highlighted file had to be added.
Simple and easist way to get url value
First add # to url (e:g - test.html#key=value)
url in browser (https://stackover.....king-angularjs-1-5#?brand=stackoverflow)
var url = window.location.href
(output: url = "https://stackover.....king-angularjs-1-5#?brand=stackoverflow")
url.split('=').pop()
output "stackoverflow"
If you created your database following this tutorial: https://msdn.microsoft.com/en-au/data/jj193542.aspx
... then this might work:
.mdf
and .ldf
files in your project directoryEdit 2 (2017):
In all modern browsers you can simply call: console.trace();
(MDN Reference)
Edit 1 (2013):
A better (and simpler) solution as pointed out in the comments on the original question is to use the stack
property of an Error
object like so:
function stackTrace() {
var err = new Error();
return err.stack;
}
This will generate output like this:
DBX.Utils.stackTrace@http://localhost:49573/assets/js/scripts.js:44
DBX.Console.Debug@http://localhost:49573/assets/js/scripts.js:9
.success@http://localhost:49573/:462
x.Callbacks/c@http://localhost:49573/assets/js/jquery-1.10.2.min.js:4
x.Callbacks/p.fireWith@http://localhost:49573/assets/js/jquery-1.10.2.min.js:4
k@http://localhost:49573/assets/js/jquery-1.10.2.min.js:6
.send/r@http://localhost:49573/assets/js/jquery-1.10.2.min.js:6
Giving the name of the calling function along with the URL, its calling function, and so on.
Original (2009):
A modified version of this snippet may somewhat help:
function stacktrace() {
function st2(f) {
return !f ? [] :
st2(f.caller).concat([f.toString().split('(')[0].substring(9) + '(' + f.arguments.join(',') + ')']);
}
return st2(arguments.callee.caller);
}
The exception can be caught in the async function.
public async void Foo()
{
try
{
var x = await DoSomethingAsync();
/* Handle the result, but sometimes an exception might be thrown
For example, DoSomethingAsync get's data from the network
and the data is invalid... a ProtocolException might be thrown */
}
catch (ProtocolException ex)
{
/* The exception will be caught here */
}
}
public void DoFoo()
{
Foo();
}
The easiest way is through css3 $("select option:selected")
and then use the .text()
or .html()
function. depending on what you want to have.
The resolution is 480 dpi, the launcher icon is 144*144px all is scaled 3x respect to mdpi (so called "base", "baseline" or "normal") sizes.
NOTE : This solution is broken in iOS 8. I will post new solution ASAP.
I am going to answer here using storyboard but it is also possible without storyboard.
Init: Create two UIViewController
in storyboard.
FirstViewController
which is normal and SecondViewController
which will be the popup.
Modal Segue: Put UIButton
in FirstViewController and create a segue on this UIButton
to SecondViewController
as modal segue.
Make Transparent: Now select UIView
(UIView
Which is created by default with UIViewController
) of SecondViewController
and change its background color to clear color.
Make background Dim: Add an UIImageView
in SecondViewController
which covers whole screen and sets its image to some dimmed semi transparent image. You can get a sample from here : UIAlertView
Background Image
Display Design: Now add an UIView
and make any kind of design you want to show. Here is a screenshot of my storyboard
SecondViewController
as popup to ask username and passwordImportant: Now that main step. We want that SecondViewController
doesn't hide FirstViewController completely. We have set clear color but this is not enough. By default it adds black behind model presentation so we have to add one line of code in viewDidLoad of FirstViewController
. You can add it at another place also but it should run before segue.
[self setModalPresentationStyle:UIModalPresentationCurrentContext];
Dismiss: When to dismiss depends on your use case. This is a modal presentation so to dismiss we do what we do for modal presentation:
[self dismissViewControllerAnimated:YES completion:Nil];
Thats all.....
Any kind of suggestion and comment are welcome.
Demo : You can get demo source project from Here : Popup Demo
NEW : Someone have done very nice job on this concept : MZFormSheetController
New : I found one more code to get this kind of function : KLCPopup
iOS 8 Update : I made this method to work with both iOS 7 and iOS 8
+ (void)setPresentationStyleForSelfController:(UIViewController *)selfController presentingController:(UIViewController *)presentingController
{
if (iOSVersion >= 8.0)
{
presentingController.providesPresentationContextTransitionStyle = YES;
presentingController.definesPresentationContext = YES;
[presentingController setModalPresentationStyle:UIModalPresentationOverCurrentContext];
}
else
{
[selfController setModalPresentationStyle:UIModalPresentationCurrentContext];
[selfController.navigationController setModalPresentationStyle:UIModalPresentationCurrentContext];
}
}
Can use this method inside prepareForSegue deligate like this
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
PopUpViewController *popup = segue.destinationViewController;
[self setPresentationStyleForSelfController:self presentingController:popup]
}
Another issue that you might run into if you're running RHEL (I ran into it) is that there is a default welcome page configured with the httpd package that will override your settings, even if you put Options Indexes. The file is in /etc/httpd/conf.d/welcome.conf. See the following link for more info: http://wpapi.com/solved-issue-directory-index-forbidden-by-options-directive/
The wording of the error message corresponds to what you get from Google Chrome when you run JSON.parse('<...')
. I know you said the server is setting Content-Type:application/json
, but I am led to believe the response body is actually HTML.
Feed.js:94 undefined "parsererror" "SyntaxError: Unexpected token < in JSON at position 0"
with the line
console.error(this.props.url, status, err.toString())
underlined.
The err
was actually thrown within jQuery
, and passed to you as a variable err
. The reason that line is underlined is simply because that is where you are logging it.
I would suggest that you add to your logging. Looking at the actual xhr
(XMLHttpRequest) properties to learn more about the response. Try adding console.warn(xhr.responseText)
and you will most likely see the HTML that is being received.
I've been reading that hashing functions like SHA256 weren't really intended for use with storing passwords: https://patrickmn.com/security/storing-passwords-securely/#notpasswordhashes
Instead adaptive key derivation functions like PBKDF2, bcrypt or scrypt were. Here is a PBKDF2 based one that Microsoft wrote for PasswordHasher in their Microsoft.AspNet.Identity library:
/* =======================
* HASHED PASSWORD FORMATS
* =======================
*
* Version 3:
* PBKDF2 with HMAC-SHA256, 128-bit salt, 256-bit subkey, 10000 iterations.
* Format: { 0x01, prf (UInt32), iter count (UInt32), salt length (UInt32), salt, subkey }
* (All UInt32s are stored big-endian.)
*/
public string HashPassword(string password)
{
var prf = KeyDerivationPrf.HMACSHA256;
var rng = RandomNumberGenerator.Create();
const int iterCount = 10000;
const int saltSize = 128 / 8;
const int numBytesRequested = 256 / 8;
// Produce a version 3 (see comment above) text hash.
var salt = new byte[saltSize];
rng.GetBytes(salt);
var subkey = KeyDerivation.Pbkdf2(password, salt, prf, iterCount, numBytesRequested);
var outputBytes = new byte[13 + salt.Length + subkey.Length];
outputBytes[0] = 0x01; // format marker
WriteNetworkByteOrder(outputBytes, 1, (uint)prf);
WriteNetworkByteOrder(outputBytes, 5, iterCount);
WriteNetworkByteOrder(outputBytes, 9, saltSize);
Buffer.BlockCopy(salt, 0, outputBytes, 13, salt.Length);
Buffer.BlockCopy(subkey, 0, outputBytes, 13 + saltSize, subkey.Length);
return Convert.ToBase64String(outputBytes);
}
public bool VerifyHashedPassword(string hashedPassword, string providedPassword)
{
var decodedHashedPassword = Convert.FromBase64String(hashedPassword);
// Wrong version
if (decodedHashedPassword[0] != 0x01)
return false;
// Read header information
var prf = (KeyDerivationPrf)ReadNetworkByteOrder(decodedHashedPassword, 1);
var iterCount = (int)ReadNetworkByteOrder(decodedHashedPassword, 5);
var saltLength = (int)ReadNetworkByteOrder(decodedHashedPassword, 9);
// Read the salt: must be >= 128 bits
if (saltLength < 128 / 8)
{
return false;
}
var salt = new byte[saltLength];
Buffer.BlockCopy(decodedHashedPassword, 13, salt, 0, salt.Length);
// Read the subkey (the rest of the payload): must be >= 128 bits
var subkeyLength = decodedHashedPassword.Length - 13 - salt.Length;
if (subkeyLength < 128 / 8)
{
return false;
}
var expectedSubkey = new byte[subkeyLength];
Buffer.BlockCopy(decodedHashedPassword, 13 + salt.Length, expectedSubkey, 0, expectedSubkey.Length);
// Hash the incoming password and verify it
var actualSubkey = KeyDerivation.Pbkdf2(providedPassword, salt, prf, iterCount, subkeyLength);
return actualSubkey.SequenceEqual(expectedSubkey);
}
private static void WriteNetworkByteOrder(byte[] buffer, int offset, uint value)
{
buffer[offset + 0] = (byte)(value >> 24);
buffer[offset + 1] = (byte)(value >> 16);
buffer[offset + 2] = (byte)(value >> 8);
buffer[offset + 3] = (byte)(value >> 0);
}
private static uint ReadNetworkByteOrder(byte[] buffer, int offset)
{
return ((uint)(buffer[offset + 0]) << 24)
| ((uint)(buffer[offset + 1]) << 16)
| ((uint)(buffer[offset + 2]) << 8)
| ((uint)(buffer[offset + 3]));
}
Note this requires Microsoft.AspNetCore.Cryptography.KeyDerivation nuget package installed which requires .NET Standard 2.0 (.NET 4.6.1 or higher). For earlier versions of .NET see the Crypto class from Microsoft's System.Web.Helpers library.
Update Nov 2015
Updated answer to use an implementation from a different Microsoft library which uses PBKDF2-HMAC-SHA256 hashing instead of PBKDF2-HMAC-SHA1 (note PBKDF2-HMAC-SHA1 is still secure if iterCount is high enough). You can check out the source the simplified code was copied from as it actually handles validating and upgrading hashes implemented from previous answer, useful if you need to increase iterCount in the future.
I have not used Selenium 2. Selenium 1.x has selenium.getTable("tablename".columnNumber.rowNumber)
to reach the required cell. May be you can use webdriverbackedselenium
and do this.
And you can get the total rows and columns by using
int numOfRows = selenium.getXpathCount("//table[@id='tableid']//tr")
int numOfCols=selenium.getXpathCount("//table[@id='tableid']//tr//td")
As mentioned above, the short answer is no. But I'm in need of something similar in the app I'm working on now, yet the areas where the CSS needs to be different are limited to very specific areas of a page.
If you're like me and don't need to serve up an entirely different stylesheet, another option would be to detect a device running iOS in the way described in this question's selected answer: Detect if device is iOS
Once you've detected the iOS device you could add a class to the area you're targeting using Javascript (eg. the document.getElementsByTagName("yourElementHere")[0].setAttribute("class", "iOS-device");
, jQuery, PHP or whatever, and style that class accordingly using the pre-existing stylesheet.
.iOS-device {
style-you-want-to-set: yada;
}
Apparently, the system I was using had the docker-ce not Docker. Thus, running below command did the trick.
sudo apt-get purge docker-ce
sudo rm -rf /var/lib/docker
hope it helps
If you create your database in direct admin or cpanel, you must edit your sql with notepad or notepad++ and change CREATE DATABASE
command to CREATE DATABASE IF NOT EXISTS
in line22
There are many ways to do this in R. Specifically, by
, aggregate
, split
, and plyr
, cast
, tapply
, data.table
, dplyr
, and so forth.
Broadly speaking, these problems are of the form split-apply-combine. Hadley Wickham has written a beautiful article that will give you deeper insight into the whole category of problems, and it is well worth reading. His plyr
package implements the strategy for general data structures, and dplyr
is a newer implementation performance tuned for data frames. They allow for solving problems of the same form but of even greater complexity than this one. They are well worth learning as a general tool for solving data manipulation problems.
Performance is an issue on very large datasets, and for that it is hard to beat solutions based on data.table
. If you only deal with medium-sized datasets or smaller, however, taking the time to learn data.table
is likely not worth the effort. dplyr
can also be fast, so it is a good choice if you want to speed things up, but don't quite need the scalability of data.table
.
Many of the other solutions below do not require any additional packages. Some of them are even fairly fast on medium-large datasets. Their primary disadvantage is either one of metaphor or of flexibility. By metaphor I mean that it is a tool designed for something else being coerced to solve this particular type of problem in a 'clever' way. By flexibility I mean they lack the ability to solve as wide a range of similar problems or to easily produce tidy output.
base
functionstapply
:
tapply(df$speed, df$dive, mean)
# dive1 dive2
# 0.5419921 0.5103974
aggregate
:
aggregate
takes in data.frames, outputs data.frames, and uses a formula interface.
aggregate( speed ~ dive, df, mean )
# dive speed
# 1 dive1 0.5790946
# 2 dive2 0.4864489
by
:
In its most user-friendly form, it takes in vectors and applies a function to them. However, its output is not in a very manipulable form.:
res.by <- by(df$speed, df$dive, mean)
res.by
# df$dive: dive1
# [1] 0.5790946
# ---------------------------------------
# df$dive: dive2
# [1] 0.4864489
To get around this, for simple uses of by
the as.data.frame
method in the taRifx
library works:
library(taRifx)
as.data.frame(res.by)
# IDX1 value
# 1 dive1 0.6736807
# 2 dive2 0.4051447
split
:
As the name suggests, it performs only the "split" part of the split-apply-combine strategy. To make the rest work, I'll write a small function that uses sapply
for apply-combine. sapply
automatically simplifies the result as much as possible. In our case, that means a vector rather than a data.frame, since we've got only 1 dimension of results.
splitmean <- function(df) {
s <- split( df, df$dive)
sapply( s, function(x) mean(x$speed) )
}
splitmean(df)
# dive1 dive2
# 0.5790946 0.4864489
data.table:
library(data.table)
setDT(df)[ , .(mean_speed = mean(speed)), by = dive]
# dive mean_speed
# 1: dive1 0.5419921
# 2: dive2 0.5103974
dplyr
:
library(dplyr)
group_by(df, dive) %>% summarize(m = mean(speed))
plyr
(the pre-cursor of dplyr
)
Here's what the official page has to say about plyr
:
It’s already possible to do this with
base
R functions (likesplit
and theapply
family of functions), butplyr
makes it all a bit easier with:
- totally consistent names, arguments and outputs
- convenient parallelisation through the
foreach
package- input from and output to data.frames, matrices and lists
- progress bars to keep track of long running operations
- built-in error recovery, and informative error messages
- labels that are maintained across all transformations
In other words, if you learn one tool for split-apply-combine manipulation it should be plyr
.
library(plyr)
res.plyr <- ddply( df, .(dive), function(x) mean(x$speed) )
res.plyr
# dive V1
# 1 dive1 0.5790946
# 2 dive2 0.4864489
reshape2:
The reshape2
library is not designed with split-apply-combine as its primary focus. Instead, it uses a two-part melt/cast strategy to perform a wide variety of data reshaping tasks. However, since it allows an aggregation function it can be used for this problem. It would not be my first choice for split-apply-combine operations, but its reshaping capabilities are powerful and thus you should learn this package as well.
library(reshape2)
dcast( melt(df), variable ~ dive, mean)
# Using dive as id variables
# variable dive1 dive2
# 1 speed 0.5790946 0.4864489
library(microbenchmark)
m1 <- microbenchmark(
by( df$speed, df$dive, mean),
aggregate( speed ~ dive, df, mean ),
splitmean(df),
ddply( df, .(dive), function(x) mean(x$speed) ),
dcast( melt(df), variable ~ dive, mean),
dt[, mean(speed), by = dive],
summarize( group_by(df, dive), m = mean(speed) ),
summarize( group_by(dt, dive), m = mean(speed) )
)
> print(m1, signif = 3)
Unit: microseconds
expr min lq mean median uq max neval cld
by(df$speed, df$dive, mean) 302 325 343.9 342 362 396 100 b
aggregate(speed ~ dive, df, mean) 904 966 1012.1 1020 1060 1130 100 e
splitmean(df) 191 206 249.9 220 232 1670 100 a
ddply(df, .(dive), function(x) mean(x$speed)) 1220 1310 1358.1 1340 1380 2740 100 f
dcast(melt(df), variable ~ dive, mean) 2150 2330 2440.7 2430 2490 4010 100 h
dt[, mean(speed), by = dive] 599 629 667.1 659 704 771 100 c
summarize(group_by(df, dive), m = mean(speed)) 663 710 774.6 744 782 2140 100 d
summarize(group_by(dt, dive), m = mean(speed)) 1860 1960 2051.0 2020 2090 3430 100 g
autoplot(m1)
As usual, data.table
has a little more overhead so comes in about average for small datasets. These are microseconds, though, so the differences are trivial. Any of the approaches works fine here, and you should choose based on:
plyr
is always worth learning for its flexibility; data.table
is worth learning if you plan to analyze huge datasets; by
and aggregate
and split
are all base R functions and thus universally available)But what if we have a big dataset? Let's try 10^7 rows split over ten groups.
df <- data.frame(dive=factor(sample(letters[1:10],10^7,replace=TRUE)),speed=runif(10^7))
dt <- data.table(df)
setkey(dt,dive)
m2 <- microbenchmark(
by( df$speed, df$dive, mean),
aggregate( speed ~ dive, df, mean ),
splitmean(df),
ddply( df, .(dive), function(x) mean(x$speed) ),
dcast( melt(df), variable ~ dive, mean),
dt[,mean(speed),by=dive],
times=2
)
> print(m2, signif = 3)
Unit: milliseconds
expr min lq mean median uq max neval cld
by(df$speed, df$dive, mean) 720 770 799.1 791 816 958 100 d
aggregate(speed ~ dive, df, mean) 10900 11000 11027.0 11000 11100 11300 100 h
splitmean(df) 974 1040 1074.1 1060 1100 1280 100 e
ddply(df, .(dive), function(x) mean(x$speed)) 1050 1080 1110.4 1100 1130 1260 100 f
dcast(melt(df), variable ~ dive, mean) 2360 2450 2492.8 2490 2520 2620 100 g
dt[, mean(speed), by = dive] 119 120 126.2 120 122 212 100 a
summarize(group_by(df, dive), m = mean(speed)) 517 521 531.0 522 532 620 100 c
summarize(group_by(dt, dive), m = mean(speed)) 154 155 174.0 156 189 321 100 b
autoplot(m2)
Then data.table
or dplyr
using operating on data.table
s is clearly the way to go. Certain approaches (aggregate
and dcast
) are beginning to look very slow.
If you have more groups, the difference becomes more pronounced. With 1,000 groups and the same 10^7 rows:
df <- data.frame(dive=factor(sample(seq(1000),10^7,replace=TRUE)),speed=runif(10^7))
dt <- data.table(df)
setkey(dt,dive)
# then run the same microbenchmark as above
print(m3, signif = 3)
Unit: milliseconds
expr min lq mean median uq max neval cld
by(df$speed, df$dive, mean) 776 791 816.2 810 828 925 100 b
aggregate(speed ~ dive, df, mean) 11200 11400 11460.2 11400 11500 12000 100 f
splitmean(df) 5940 6450 7562.4 7470 8370 11200 100 e
ddply(df, .(dive), function(x) mean(x$speed)) 1220 1250 1279.1 1280 1300 1440 100 c
dcast(melt(df), variable ~ dive, mean) 2110 2190 2267.8 2250 2290 2750 100 d
dt[, mean(speed), by = dive] 110 111 113.5 111 113 143 100 a
summarize(group_by(df, dive), m = mean(speed)) 625 630 637.1 633 644 701 100 b
summarize(group_by(dt, dive), m = mean(speed)) 129 130 137.3 131 142 213 100 a
autoplot(m3)
So data.table
continues scaling well, and dplyr
operating on a data.table
also works well, with dplyr
on data.frame
close to an order of magnitude slower. The split
/sapply
strategy seems to scale poorly in the number of groups (meaning the split()
is likely slow and the sapply
is fast). by
continues to be relatively efficient--at 5 seconds, it's definitely noticeable to the user but for a dataset this large still not unreasonable. Still, if you're routinely working with datasets of this size, data.table
is clearly the way to go - 100% data.table for the best performance or dplyr
with dplyr
using data.table
as a viable alternative.
It is possible to reference an intellij 'Path Variable' in an intellij 'Run Configuration'.
In 'Path Variables' create a variable for example ANALYTICS_VERSION
.
In a 'Run Configuration' under 'Environment Variables' add for example the following:
ANALYTICS_LOAD_LOCATION=$MAVEN_REPOSITORY$\com\my\company\analytics\$ANALYTICS_VERSION$\bin
To answer the original question you would need to add an APP_HOME
environment variable to your run configuration which references the path variable:
APP_HOME=$APP_HOME$
A YAML sequence is an array. So this is the right way to express it:
key:
- string1
- string2
- string3
- string4
- string5
- string6
That's identical in meaning to:
key: ['string1', 'string2', 'string3', 'string4', 'string5', 'string6']
It's also legal to split a single-line array over several lines:
key: ['string1', 'string2', 'string3',
'string4', 'string5',
'string6']
and even have multi-line strings in single-line arrays:
key: ['string1', 'long
string', 'string3', 'string4', 'string5', 'string6']
Pseudo code, something like:
CASE
When CHARINDEX('lactulose', dbo.Table.Column) > 0 Then 'BP Medication'
ELSE ''
END AS 'Medication Type'
This does not care where the keyword is found in the list and avoids depending on formatting of spaces and commas.
This provides you with the possibility of adding conditions on the rows and then change all the cells of a specific column corresponding to those rows:
df.loc[(df['issueid'] == '001'), 'industry'] = str('yyy')
Also, please make sure you installed the correct version of apache on your computer. For example, not install a x86 on a 64bit system. Vice versa.
You should consider these Design Guidelines for Exceptions
https://docs.microsoft.com/en-us/dotnet/standard/design-guidelines/exceptions
If you want to match only elements with both classes (an intersection, like a logical AND), just write the selectors together without spaces in between:
$('.a.b')
The order is not relevant, so you can also swap the classes:
$('.b.a')
So to match a div
element that has an ID of a
with classes b
and c
, you would write:
$('div#a.b.c')
(In practice, you most likely don't need to get that specific, and an ID or class selector by itself is usually enough: $('#a')
.)
A one liner but without String.format
for all RGB colors:
Color your_color = new Color(128,128,128);
String hex = "#"+Integer.toHexString(your_color.getRGB()).substring(2);
You can add a .toUpperCase()
if you want to switch to capital letters. Note, that this is valid (as asked in the question) for all RGB colors.
When you have ARGB colors you can use:
Color your_color = new Color(128,128,128,128);
String buf = Integer.toHexString(your_color.getRGB());
String hex = "#"+buf.substring(buf.length()-6);
A one liner is theoretically also possible but would require to call toHexString twice. I benchmarked the ARGB solution and compared it with String.format()
: