Try:
SELECT COALESCE(NULLIF(field, ''), another_field) FROM table_name
I had the same error when trying to launch spyder. "RuntimeError: module compiled against API version 0xb but this version of numpy is 0xa". This error appeared once I modified the numpy version of my machine by mistake (I thought I was in a venv). If your are using spyder installed with conda, my advice is to only use conda to manage package.
This works for me:
conda install anaconda
(I had conda but no anaconda on my machine) then:
conda update numpy
If width:100%
works in any cases, just use that, otherwise you can use vw
in this case which is relative to 1% of the width of the viewport.
That means if you want to cover off the width, just use 100vw
.
Look at the image I draw for you here:
Try the snippet I created for you as below:
.full-width {_x000D_
width: 100vw;_x000D_
height: 100px;_x000D_
margin-bottom: 40px;_x000D_
background-color: red;_x000D_
}_x000D_
_x000D_
.one-vw-width {_x000D_
width: 1vw;_x000D_
height: 100px;_x000D_
background-color: red;_x000D_
}
_x000D_
<div class="full-width"></div>_x000D_
<div class="one-vw-width"></div>
_x000D_
A FragmentActivity
is a subclass of Activity
that was built for the Android Support Package.
The FragmentActivity
class adds a couple new methods to ensure compatibility with older versions of Android, but other than that, there really isn't much of a difference between the two. Just make sure you change all calls to getLoaderManager()
and getFragmentManager()
to getSupportLoaderManager()
and getSupportFragmentManager()
respectively.
I got the same issue when i newly installed pycharm in my windows 10 machine.
download python setup
install this solved my problem.
for more help visit goodluck
During the install of python make sure you have "Install for all users" selected. Uninstall python and do a custom install and check "Install for all users"
From iTunes 12.7 apple removes App Store, So we unable to for find App option
We have another way to install iOS app using iTunes 12.7 as below
1)drag and drop your .app file to iTunes.
2)It will create .ipa file, you can find that at ~/Music/iTunes/iTunes Media/Mobile Applications/
3)connect the device you want to install that app.
4)drag .ipa file from finder to iTunes on my Device section as shown in below section.
If you look in the source code for $.fn.bind
you will find that it's just an rewrite function for on
:
function (types, data, fn) {
return this.on(types, null, data, fn);
}
Please let me add my 5 cents here and offer a classical solution:
html {height:100%;}_x000D_
body {height:100%; margin:0;}_x000D_
#idOuter {position:relative; width:100%; height:100%;}_x000D_
#idHeader {position:absolute; left:0; right:0; border:solid 3px red;}_x000D_
#idContent {position:absolute; overflow-y:scroll; left:0; right:0; border:solid 3px green;}
_x000D_
<div id="idOuter">_x000D_
<div id="idHeader" style="height:30px; top:0;">Header section</div>_x000D_
<div id="idContent" style="top:36px; bottom:0;">Content section</div>_x000D_
</div>
_x000D_
This will work in all browsers, no script, no flex. Open snippet in full page mode and resize browser: desired proportions are preserved even in fullscreen mode.
idHeader.height
and idContent.top
are adjusted to include border,
and should have the same value if border is not used. Otherwise
elements will pull out of the viewport, since calculated width does
not include border, margin and/or padding.left:0; right:0;
can be replaced by width:100%
for the same
reason, if no border used.padding-top
and/or
padding-bottom
attributes to #idOuter
element.To complete my answer, here is the footer layout:
html {height:100%;}_x000D_
body {height:100%; margin:0;}_x000D_
#idOuter {position:relative; width:100%; height:100%;}_x000D_
#idContent {position:absolute; overflow-y:scroll; left:0; right:0; border:solid 3px green;}_x000D_
#idFooter {position:absolute; left:0; right:0; border:solid 3px blue;}
_x000D_
<div id="idOuter">_x000D_
<div id="idContent" style="bottom:36px; top:0;">Content section</div>_x000D_
<div id="idFooter" style="height:30px; bottom:0;">Footer section</div>_x000D_
</div>
_x000D_
And here is the layout with both header and footer:
html {height:100%;}_x000D_
body {height:100%; margin:0;}_x000D_
#idOuter {position:relative; width:100%; height:100%;}_x000D_
#idHeader {position:absolute; left:0; right:0; border:solid 3px red;}_x000D_
#idContent {position:absolute; overflow-y:scroll; left:0; right:0; border:solid 3px green;}_x000D_
#idFooter {position:absolute; left:0; right:0; border:solid 3px blue;}
_x000D_
<div id="idOuter">_x000D_
<div id="idHeader" style="height:30px; top:0;">Header section</div>_x000D_
<div id="idContent" style="top:36px; bottom:36px;">Content section</div>_x000D_
<div id="idFooter" style="height:30px; bottom:0;">Footer section</div>_x000D_
</div>
_x000D_
To see/get the SHA-1 id of the commit you want to come back too
gitk --all
To roll back to that commit
git reset --hard sha1_id
!Note. All the commits that were made after that commit will be deleted (and all your modification to the project). So first better clone the project to another branch or copy to another directory.
Just to be different:
MOREF=$(sudo run command against $VAR1 | grep name | cut -c7-)
Alpine Linux does not have any default location at all. The file /etc/nginx/conf.d/default.conf
says:
# Everything is a 404
location / {
return 404;
}
# You may need this to prevent return 404 recursion.
location = /404.html {
internal;
}
Replace those with a line like root /var/www/localhost/htdocs
to point to the directory you want. Then sudo service nginx restart
to restart.
A syntax error in the function -- or in the code above it -- may cause it to be undefined.
You can simply use the zoom property:
#myContainer{
zoom: 0.5;
-moz-transform: scale(0.5);
}
Where myContainer contains all the elements you're editing. This is supported in all major browsers.
In order to handle arrays with the $resource service, it's suggested that you use the query method. As you can see below, the query method is built to handle arrays.
{ 'get': {method:'GET'},
'save': {method:'POST'},
'query': {method:'GET', isArray:true},
'remove': {method:'DELETE'},
'delete': {method:'DELETE'}
};
User $resource("apiUrl").query();
I used a bit different Approach, as we always know our actual components so i thought to apply switch case. Also total no of component were around 7-8 in my case.
getSubComponent(name) {
let customProps = {
"prop1" :"",
"prop2":"",
"prop3":"",
"prop4":""
}
switch (name) {
case "Component1": return <Component1 {...this.props} {...customProps} />
case "Component2": return <Component2 {...this.props} {...customProps} />
case "component3": return <component3 {...this.props} {...customProps} />
}
}
You can try color-sampler. It's an easy way to pick color in a canvas. See demo.
Using tidyr
package, this can be easily handled in 1 function call.
data <- data.frame('a' = 1:3,
'b' = c('a','b','c'),
'c' = c('d', 'e', 'f'),
'd' = c('g', 'h', 'i'))
tidyr::unite_(data, paste(colnames(data)[-1], collapse="_"), colnames(data)[-1])
a b_c_d
1 1 a_d_g
2 2 b_e_h
3 3 c_f_i
Edit: Exclude first column, everything else gets pasted.
# tidyr_0.6.3
unite(data, newCol, -a)
# or by column index unite(data, newCol, -1)
# a newCol
# 1 1 a_d_g
# 2 2 b_e_h
# 3 3 c_f_i
When encoding query values, either form, plus or percent-20, is valid; however, since the bandwidth of the internet isn't infinite, you should use plus, since it's two fewer bytes.
You can also cheat in some way by hidding a submit button on your form and triggering it when you click on your modal button.
Four Different Ways to Check If an Array Contains a Value
Using List
:
public static boolean useList(String[] arr, String targetValue) {
return Arrays.asList(arr).contains(targetValue);
}
Using Set
:
public static boolean useSet(String[] arr, String targetValue) {
Set<String> set = new HashSet<String>(Arrays.asList(arr));
return set.contains(targetValue);
}
Using a simple loop:
public static boolean useLoop(String[] arr, String targetValue) {
for (String s: arr) {
if (s.equals(targetValue))
return true;
}
return false;
}
Using Arrays.binarySearch()
:
The code below is wrong, it is listed here for completeness. binarySearch()
can ONLY be used on sorted arrays. You will find the result is weird below. This is the best option when array is sorted.
public static boolean binarySearch(String[] arr, String targetValue) {
return Arrays.binarySearch(arr, targetValue) >= 0;
}
String testValue="test";
String newValueNotInList="newValue";
String[] valueArray = { "this", "is", "java" , "test" };
Arrays.asList(valueArray).contains(testValue); // returns true
Arrays.asList(valueArray).contains(newValueNotInList); // returns false
The spirit of Web font is to use cache as much as possible, therefore you should use CDN version between <head></head>
instead of hosting yourself:
<link href="//netdna.bootstrapcdn.com/font-awesome/3.2.1/css/font-awesome.css" rel="stylesheet">
Also, make sure you loaded your CSS AFTER the above line, or your custom font CSS won't work.
Reference: Font Awesome Get Started
sum = sum.add(BigInteger.valueOf(i))
The BigInteger
class is immutable, hence you can't change its state. So calling "add" creates a new BigInteger
, rather than modifying the current.
If you are using emulator then try reset it and if you at mobile first uninstall the application then switch off the developer mode, and then switch it on the problem will be solved.
There are after and before methods for Timestamp
which will do the trick
There are many, many ways to code this, but here is one possible way. I'm assuming MS SQL
We'll start by getting row count (Another Quick Example) and then do if/else
-- Let's get our row count and assign it to a var that will be used
-- in our if stmt
DECLARE @HasExistingRows int -- I'm assuming it can fit into an int
SELECT @HasExistingRows = Count(*)
ELSE 0 -- false
FROM
INCIDENTS
WHERE {Your Criteria}
GROUP BY {Required Grouping}
Now we can do the If / Else Logic MSDN Docs
-- IF / Else / Begin / END Syntax
IF @HasExistingRows = 0 -- No Existing Rows
BEGIN
{Insert Logic for No Existing Rows}
END
ELSE -- existing rows are found
BEGIN
{Insert logic for existing rows}
END
Another faster way (inspired by Mahmoud Gamal's comment):
Forget the whole variable creation / assignment - look up "EXISTS" - MSDN Docs 2.
IF EXISTS ({SELECT Query})
BEGIN
{INSERT Version 1}
END
ELSE
BEGIN
{INSERT version 2}
END
This one works on X11, and perhaps on Windows too (someone, please check). Needs PyQt4:
import sys
from PyQt4.QtGui import QPixmap, QApplication
app = QApplication(sys.argv)
QPixmap.grabWindow(QApplication.desktop().winId()).save('test.png', 'png')
Use display instead of visibility. display: none for invisible and no setting for visible.
The main issue is that you haven't supplied the first grep with any input. You will need to reorder your command something like
grep "word1" logs | grep "word2"
If you want to count the occurences, then put a '-c' on the second grep.
As much as your available memory will allow. There's no size limit except for the heap.
That is the simple way of converting string into util date and sql date
String startDate="12-31-2014";
SimpleDateFormat sdf1 = new SimpleDateFormat("MM-dd-yyyy");
java.util.Date date = sdf1.parse(startDate);
java.sql.Date sqlStartDate = new java.sql.Date(date.getTime());
#include <iostream>
#include <cstdlib>
#include <ctime>
int main() {
srand(time(NULL));
int random_number = std::rand(); // rand() return a number between ?0? and RAND_MAX
std::cout << random_number;
return 0;
}
You can now do this by including the sound when building a notification rather than calling the sound separately.
//Define Notification Manager
NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
//Define sound URI
Uri soundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(getApplicationContext())
.setSmallIcon(icon)
.setContentTitle(title)
.setContentText(message)
.setSound(soundUri); //This sets the sound to play
//Display notification
notificationManager.notify(0, mBuilder.build());
There is one important thing to mention:
$("#txt_name").val();
will return the current real value of a text field, for example if the user typed something there after a page load.
But:
$("#txt_name").attr('value')
will return value from DOM/HTML.
If your Tardis just landed in 1963, and you just want the 7 bit printable ASCII chars, you can rip out everything from 0-31 and 127-255 with this:
$string = preg_replace('/[\x00-\x1F\x7F-\xFF]/', '', $string);
It matches anything in range 0-31, 127-255 and removes it.
You fell into a Hot Tub Time Machine, and you're back in the eighties. If you've got some form of 8 bit ASCII, then you might want to keep the chars in range 128-255. An easy adjustment - just look for 0-31 and 127
$string = preg_replace('/[\x00-\x1F\x7F]/', '', $string);
Ah, welcome back to the 21st century. If you have a UTF-8 encoded string, then the /u
modifier can be used on the regex
$string = preg_replace('/[\x00-\x1F\x7F]/u', '', $string);
This just removes 0-31 and 127. This works in ASCII and UTF-8 because both share the same control set range (as noted by mgutt below). Strictly speaking, this would work without the /u
modifier. But it makes life easier if you want to remove other chars...
If you're dealing with Unicode, there are potentially many non-printing elements, but let's consider a simple one: NO-BREAK SPACE (U+00A0)
In a UTF-8 string, this would be encoded as 0xC2A0
. You could look for and remove that specific sequence, but with the /u
modifier in place, you can simply add \xA0
to the character class:
$string = preg_replace('/[\x00-\x1F\x7F\xA0]/u', '', $string);
preg_replace is pretty efficient, but if you're doing this operation a lot, you could build an array of chars you want to remove, and use str_replace as noted by mgutt below, e.g.
//build an array we can re-use across several operations
$badchar=array(
// control characters
chr(0), chr(1), chr(2), chr(3), chr(4), chr(5), chr(6), chr(7), chr(8), chr(9), chr(10),
chr(11), chr(12), chr(13), chr(14), chr(15), chr(16), chr(17), chr(18), chr(19), chr(20),
chr(21), chr(22), chr(23), chr(24), chr(25), chr(26), chr(27), chr(28), chr(29), chr(30),
chr(31),
// non-printing characters
chr(127)
);
//replace the unwanted chars
$str2 = str_replace($badchar, '', $str);
Intuitively, this seems like it would be fast, but it's not always the case, you should definitely benchmark to see if it saves you anything. I did some benchmarks across a variety string lengths with random data, and this pattern emerged using php 7.0.12
2 chars str_replace 5.3439ms preg_replace 2.9919ms preg_replace is 44.01% faster
4 chars str_replace 6.0701ms preg_replace 1.4119ms preg_replace is 76.74% faster
8 chars str_replace 5.8119ms preg_replace 2.0721ms preg_replace is 64.35% faster
16 chars str_replace 6.0401ms preg_replace 2.1980ms preg_replace is 63.61% faster
32 chars str_replace 6.0320ms preg_replace 2.6770ms preg_replace is 55.62% faster
64 chars str_replace 7.4198ms preg_replace 4.4160ms preg_replace is 40.48% faster
128 chars str_replace 12.7239ms preg_replace 7.5412ms preg_replace is 40.73% faster
256 chars str_replace 19.8820ms preg_replace 17.1330ms preg_replace is 13.83% faster
512 chars str_replace 34.3399ms preg_replace 34.0221ms preg_replace is 0.93% faster
1024 chars str_replace 57.1141ms preg_replace 67.0300ms str_replace is 14.79% faster
2048 chars str_replace 94.7111ms preg_replace 123.3189ms str_replace is 23.20% faster
4096 chars str_replace 227.7029ms preg_replace 258.3771ms str_replace is 11.87% faster
8192 chars str_replace 506.3410ms preg_replace 555.6269ms str_replace is 8.87% faster
16384 chars str_replace 1116.8811ms preg_replace 1098.0589ms preg_replace is 1.69% faster
32768 chars str_replace 2299.3128ms preg_replace 2222.8632ms preg_replace is 3.32% faster
The timings themselves are for 10000 iterations, but what's more interesting is the relative differences. Up to 512 chars, I was seeing preg_replace alway win. In the 1-8kb range, str_replace had a marginal edge.
I thought it was interesting result, so including it here. The important thing is not to take this result and use it to decide which method to use, but to benchmark against your own data and then decide.
Normally your requirements.txt
file would look something like this:
package-one==1.9.4
package-two==3.7.1
package-three==1.0.1
...
To specify a Github repo, you do not need the package-name==
convention.
The examples below update package-two
using a GitHub repo. The text between @
and #
denotes the specifics of the package.
41b95ec
in the context of updated requirements.txt
):package-one==1.9.4
git+git://github.com/path/to/package-two@41b95ec#egg=package-two
package-three==1.0.1
master
):git+git://github.com/path/to/package-two@master#egg=package-two
0.1
):git+git://github.com/path/to/[email protected]#egg=package-two
3.7.1
):git+git://github.com/path/to/package-two@releases/tag/v3.7.1#egg=package-two
Note that #egg=package-two
is not a comment here, it is to explicitly state the package name
This blog post has some more discussion on the topic.
Typescript from v1.4 has the type
keyword which declares a type alias (analogous to a typedef
in C/C++). You can declare your callback type thus:
type CallbackFunction = () => void;
which declares a function that takes no arguments and returns nothing. A function that takes zero or more arguments of any type and returns nothing would be:
type CallbackFunctionVariadic = (...args: any[]) => void;
Then you can say, for example,
let callback: CallbackFunctionVariadic = function(...args: any[]) {
// do some stuff
};
If you want a function that takes an arbitrary number of arguments and returns anything (including void):
type CallbackFunctionVariadicAnyReturn = (...args: any[]) => any;
You can specify some mandatory arguments and then a set of additional arguments (say a string, a number and then a set of extra args) thus:
type CallbackFunctionSomeVariadic =
(arg1: string, arg2: number, ...args: any[]) => void;
This can be useful for things like EventEmitter handlers.
Functions can be typed as strongly as you like in this fashion, although you can get carried away and run into combinatoric problems if you try to nail everything down with a type alias.
You can find it here:
%USERPROFILE%\AppData\Local\Android\sdk\platform-tools
To save yourself the hassle in the future, add it to your path:
PATH
.You try to instantiate an object of the Friends
class like this:
Friends f = new Friends(friendsName, friendsAge);
The class does not have a constructor that takes parameters. You should either add the constructor, or create the object using the constructor that does exist and then use the set-methods. For example, instead of the above:
Friends f = new Friends();
f.setName(friendsName);
f.setAge(friendsAge);
This stuff comes from ES file explorer
Just go into this app > settings
Then there is an option that says logging floating window, you just need to disable that and you will get rid of this infernal bubble for good
You don't need to create the SSH keys on the Jenkins server, nor do you need to store the SSH keys on the Jenkins server's filesystem. This bit of information is crucial in environments where Jenkins servers instances may be created and destroyed frequently.
On any machine (Windows, Linux, MacOS ...doesn't matter) generate an SSH key pair. Use this article as guide:
On the target server, you will need to place the content of the public key (id_rsa.pub
per the above article) into the .ssh/authorized_keys
file under the home directory of the user which Jenkins will be using for deployment.
Ref: https://plugins.jenkins.io/publish-over-ssh/
Visit: Jenkins
> Manage Jenkins
> Configure System
> Publish over SSH
id_rsa
per the above article) into the "Key" fieldVisit: Jenkins
> Credentials
> System
> Global credentials (unrestricted)
> Add Credentials
id_rsa
per the above article)]in windows: if you have mysql workbench. Go to server status. find the location of running server file in my case it was:
C:\ProgramData\MySQL\MySQL Server 5.7
open my.ini file and find the buffer_pool_size. Set the value high. default value is 8M. This is how i fixed this problem
CREATE OR REPLACE PACKAGE BODY TEST AS
FUNCTION GET_UPS(
TIMESPAN_IN IN VARCHAR2 DEFAULT 'MONTLHY',
STARTING_DATE_IN DATE,
ENDING_DATE_IN DATE
)RETURN MEASURE_TABLE IS
T MEASURE_TABLE;
BEGIN
**SELECT MEASURE_RECORD(L4_ID , L6_ID ,L8_ID ,YEAR ,
PERIOD,VALUE ) BULK COLLECT INTO T
FROM ...**
;
RETURN T;
END GET_UPS;
END TEST;
for simple comments:
set serveroutput on format wrapped;
begin
DBMS_OUTPUT.put_line('simple comment');
end;
/
-- do something
begin
DBMS_OUTPUT.put_line('second simple comment');
end;
/
you should get:
anonymous block completed
simple comment
anonymous block completed
second simple comment
if you want to print out the results of variables, here's another example:
set serveroutput on format wrapped;
declare
a_comment VARCHAR2(200) :='first comment';
begin
DBMS_OUTPUT.put_line(a_comment);
end;
/
-- do something
declare
a_comment VARCHAR2(200) :='comment';
begin
DBMS_OUTPUT.put_line(a_comment || 2);
end;
your output should be:
anonymous block completed
first comment
anonymous block completed
comment2
There are couple of different solutions to achieve this:
1 - Native javascript for-in loop:
const result = {};
let key;
for (key in obj1) {
if(obj1.hasOwnProperty(key)){
result[key] = obj1[key];
}
}
for (key in obj2) {
if(obj2.hasOwnProperty(key)){
result[key] = obj2[key];
}
}
2 - Object.keys()
:
const result = {};
Object.keys(obj1)
.forEach(key => result[key] = obj1[key]);
Object.keys(obj2)
.forEach(key => result[key] = obj2[key]);
3 - Object.assign()
:
(Browser compatibility: Chrome: 45, Firefox (Gecko): 34, Internet Explorer: No support, Edge: (Yes), Opera: 32, Safari: 9)
const result = Object.assign({}, obj1, obj2);
4 - Spread Operator:
Standardised from ECMAScript 2015 (6th Edition, ECMA-262):
Defined in several sections of the specification: Array Initializer, Argument Lists
Using this new syntax you could join/merge different objects into one object like this:
const result = {
...obj1,
...obj2,
};
5 - jQuery.extend(target, obj1, obj2)
:
Merge the contents of two or more objects together into the first object.
const target = {};
$.extend(target, obj1, obj2);
6 - jQuery.extend(true, target, obj1, obj2)
:
Run a deep merge of the contents of two or more objects together into the target. Passing false
for the first argument is not supported.
const target = {};
$.extend(true, target, obj1, obj2);
7 - Lodash _.assignIn(object, [sources])
: also named as _.extend
:
const result = {};
_.assignIn(result, obj1, obj2);
8 - Lodash _.merge(object, [sources])
:
const result = _.merge(obj1, obj2);
There are a couple of important differences between lodash's merge function and Object.assign
:
1- Although they both receive any number of objects but lodash's merge apply a deep merge of those objects but Object.assign
only merges the first level. For instance:
_.isEqual(_.merge({
x: {
y: { key1: 'value1' },
},
}, {
x: {
y: { key2: 'value2' },
},
}), {
x: {
y: {
key1: 'value1',
key2: 'value2',
},
},
}); // true
BUT:
const result = Object.assign({
x: {
y: { key1: 'value1' },
},
}, {
x: {
y: { key2: 'value2' },
},
});
_.isEqual(result, {
x: {
y: {
key1: 'value1',
key2: 'value2',
},
},
}); // false
// AND
_.isEqual(result, {
x: {
y: {
key2: 'value2',
},
},
}); // true
2- Another difference has to do with how Object.assign
and _.merge
interpret the undefined
value:
_.isEqual(_.merge({x: 1}, {x: undefined}), { x: 1 }) // false
BUT:
_.isEqual(Object.assign({x: 1}, {x: undefined}), { x: undefined })// true
Update 1:
When using for in
loop in JavaScript, we should be aware of our environment specially the possible prototype changes in the JavaScript types. For instance some of the older JavaScript libraries add new stuff to Array.prototype
or even Object.prototype
.
To safeguard your iterations over from the added stuff we could use object.hasOwnProperty(key)
to mke sure the key is actually part of the object you are iterating over.
Update 2:
I updated my answer and added the solution number 4, which is a new JavaScript feature but not completely standardized yet. I am using it with Babeljs which is a compiler for writing next generation JavaScript.
Update 3:
I added the difference between Object.assign
and _.merge
.
What is a Mutex?
The mutex (In fact, the term mutex is short for mutual exclusion) also known as spinlock is the simplest synchronization tool that is used to protect critical regions and thus prevent race conditions. That is a thread must acquire a lock before entering into a critical section (In critical section multi threads share a common variable, updating a table, writing a file and so on), it releases the lock when it leaves critical section.
What is a Race Condition?
A race condition occurs when two or more threads can access shared data and they try to change it at the same time. Because the thread scheduling algorithm can swap between threads at any time, you don't know the order in which the threads will attempt to access the shared data. Therefore, the result of the change in data is dependent on the thread scheduling algorithm, i.e. both threads are "racing" to access/change the data.
Real life example:
When I am having a big heated discussion at work, I use a rubber chicken which I keep in my desk for just such occasions. The person holding the chicken is the only person who is allowed to talk. If you don't hold the chicken you cannot speak. You can only indicate that you want the chicken and wait until you get it before you speak. Once you have finished speaking, you can hand the chicken back to the moderator who will hand it to the next person to speak. This ensures that people do not speak over each other, and also have their own space to talk.
Replace Chicken with Mutex and person with thread and you basically have the concept of a mutex.
@Xetius
Usage in C#:
This example shows how a local Mutex object is used to synchronize access to a protected resource. Because each calling thread is blocked until it acquires ownership of the mutex, it must call the ReleaseMutex method to release ownership of the thread.
using System;
using System.Threading;
class Example
{
// Create a new Mutex. The creating thread does not own the mutex.
private static Mutex mut = new Mutex();
private const int numIterations = 1;
private const int numThreads = 3;
static void Main()
{
// Create the threads that will use the protected resource.
for(int i = 0; i < numThreads; i++)
{
Thread newThread = new Thread(new ThreadStart(ThreadProc));
newThread.Name = String.Format("Thread{0}", i + 1);
newThread.Start();
}
// The main thread exits, but the application continues to
// run until all foreground threads have exited.
}
private static void ThreadProc()
{
for(int i = 0; i < numIterations; i++)
{
UseResource();
}
}
// This method represents a resource that must be synchronized
// so that only one thread at a time can enter.
private static void UseResource()
{
// Wait until it is safe to enter.
Console.WriteLine("{0} is requesting the mutex",
Thread.CurrentThread.Name);
mut.WaitOne();
Console.WriteLine("{0} has entered the protected area",
Thread.CurrentThread.Name);
// Place code to access non-reentrant resources here.
// Simulate some work.
Thread.Sleep(500);
Console.WriteLine("{0} is leaving the protected area",
Thread.CurrentThread.Name);
// Release the Mutex.
mut.ReleaseMutex();
Console.WriteLine("{0} has released the mutex",
Thread.CurrentThread.Name);
}
}
// The example displays output like the following:
// Thread1 is requesting the mutex
// Thread2 is requesting the mutex
// Thread1 has entered the protected area
// Thread3 is requesting the mutex
// Thread1 is leaving the protected area
// Thread1 has released the mutex
// Thread3 has entered the protected area
// Thread3 is leaving the protected area
// Thread3 has released the mutex
// Thread2 has entered the protected area
// Thread2 is leaving the protected area
// Thread2 has released the mutex
An ECMAScript 6 solution with reflection. Create a wrapper like:
/**
Gets an argument from array or object.
The possible outcome:
- If the key exists the value is returned.
- If no key exists the default value is returned.
- If no default value is specified an empty string is returned.
@param obj The object or array to be searched.
@param key The name of the property or key.
@param defVal Optional default version of the command-line parameter [default ""]
@return The default value in case of an error else the found parameter.
*/
function getSafeReflectArg( obj, key, defVal) {
"use strict";
var retVal = (typeof defVal === 'undefined' ? "" : defVal);
if ( Reflect.has( obj, key) ) {
return Reflect.get( obj, key);
}
return retVal;
} // getSafeReflectArg
exit(0); // at the end of main function before closing curly braces
I have solved it with Dov Benjamin's help like that:
<ul>
<li v-for="(n,index) in 2">{{ object.price }}</li>
</ul>
And another method, for both V1.x and 2.x of vue.js
Vue 1:
<p v-for="item in items | limitBy 10">{{ item }}</p>
Vue2:
// Via slice method in computed prop
<p v-for="item in filteredItems">{{ item }}</p>
computed: {
filteredItems: function () {
return this.items.slice(0, 10)
}
}
$_ is an variable which iterates over each object/element passed from the previous | (pipe).
Also you can use a MessageBox
with OKCancel
options, but it requires many codes.
The if
block is for OK
, the else
block is for Cancel
. Here is the code:
if (MessageBox.Show("Are you sure you want to do this?", "Question", MessageBoxButtons.OKCancel, MessageBoxIcon.Question) == DialogResult.OK)
{
MessageBox.Show("You pressed OK!");
}
else
{
MessageBox.Show("You pressed Cancel!");
}
You can also use a MessageBox
with YesNo
options:
if (MessageBox.Show("Are you sure want to doing this?", "Question", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
{
MessageBox.Show("You are pressed Yes!");
}
else
{
MessageBox.Show("You are pressed No!");
}
With the latest Firefox, I must use:
<script type="text/javascript">...</script>
Or else the script may not run properly.
I know this question is for Bootstrap 3, but as some Bootstrap 4 related question are redirected to this one as duplicates, here's the snippet Bootstrap 4-compatible:
$.validator.setDefaults({
highlight: function(element) {
$(element).closest('.form-group').addClass('has-danger');
},
unhighlight: function(element) {
$(element).closest('.form-group').removeClass('has-danger');
},
errorElement: 'small',
errorClass: 'form-control-feedback d-block',
errorPlacement: function(error, element) {
if(element.parent('.input-group').length) {
error.insertAfter(element.parent());
} else if(element.prop('type') === 'checkbox') {
error.appendTo(element.parent().parent().parent());
} else if(element.prop('type') === 'radio') {
error.appendTo(element.parent().parent().parent());
} else {
error.insertAfter(element);
}
},
});
The few differences are:
has-danger
instead of has-error
lst[-1]
is the best approach, but with general iterables, consider more_itertools.last
:
Code
import more_itertools as mit
mit.last([0, 1, 2, 3])
# 3
mit.last(iter([1, 2, 3]))
# 3
mit.last([], "some default")
# 'some default'
There's no need for a method here.
HTML
<div v-if="active">
<h2>Hello World!</h2>
</div>
<div v-on:mouseover="active = !active">
<h1>Hover me!</h1>
</div>
JS
new Vue({
el: 'body',
data: {
active: false
}
})
Since I don't have a 50 reputation Stackoverflow wont let me comment on the second best answer. Found another trick for finding the culprit label in the Storyboard.
So once you know the id of the label, open your storyboard in a seperate tab with view controllers displayed and just do command F and command V and will take you straight to that label :)
This is because (100/500)
is an integer expression yielding 0.
Try
per = 100.0 * tota / 500
there's no need for the float()
call, since using a floating-point literal (100.0
) will make the entire expression floating-point anyway.
You need use Stream to send file (archive) in a response, what is more you have to use appropriate Content-type in your response header.
There is an example function that do it:
const fs = require('fs');
// Where fileName is name of the file and response is Node.js Reponse.
responseFile = (fileName, response) => {
const filePath = "/path/to/archive.rar" // or any file format
// Check if file specified by the filePath exists
fs.exists(filePath, function(exists){
if (exists) {
// Content-type is very interesting part that guarantee that
// Web browser will handle response in an appropriate manner.
response.writeHead(200, {
"Content-Type": "application/octet-stream",
"Content-Disposition": "attachment; filename=" + fileName
});
fs.createReadStream(filePath).pipe(response);
} else {
response.writeHead(400, {"Content-Type": "text/plain"});
response.end("ERROR File does not exist");
}
});
}
}
The purpose of the Content-Type field is to describe the data contained in the body fully enough that the receiving user agent can pick an appropriate agent or mechanism to present the data to the user, or otherwise deal with the data in an appropriate manner.
"application/octet-stream" is defined as "arbitrary binary data" in RFC 2046, purpose of this content-type is to be saved to disk - it is what you really need.
"filename=[name of file]" specifies name of file which will be downloaded.
For more information please see this stackoverflow topic.
Add the following code in viewDidLoad or loadView
self.navigationController.navigationBar.topItem.title = @"";
I tested it in iPhone and iPad with iOS 9
In Powershell 3.0 and above there is both a Invoke-WebRequest and Invoke-RestMethod. Curl is actually an alias of Invoke-WebRequest in PoSH. I think using native Powershell would be much more appropriate than curl, but it's up to you :).
Invoke-WebRequest MSDN docs are here: https://technet.microsoft.com/en-us/library/hh849901.aspx?f=255&MSPPError=-2147217396
Invoke-RestMethod MSDN docs are here: https://technet.microsoft.com/en-us/library/hh849971.aspx?f=255&MSPPError=-2147217396
A problem I had on my Mac using rbenv was that when I first set it up, it loaded a bunch of ruby executables in /usr/local/bin - these executables loaded the system ruby, rather than the current version.
If you run
which bundle
And it shows /usr/local/bin/bundle you may have this issue.
Search through /usr/local/bin and delete any files that start with #!/user/bin ruby
Then run
rbenv rehash
Please check this answer
// In angularJS script
$scope.foo = function() {
console.log('test');
};
$window.angFoo = function() {
$scope.foo();
$scope.$apply();
};
// In jQuery
if (window.angFoo) {
window.angFoo();
}
More recent versions of PS have Remove-WmiObject. Beware of silent fails for $service.delete() ...
PS D:\> $s3=Get-WmiObject -Class Win32_Service -Filter "Name='TSATSvrSvc03'"
PS D:\> $s3.delete()
...
ReturnValue : 2
...
PS D:\> $?
True
PS D:\> $LASTEXITCODE
0
PS D:\> $result=$s3.delete()
PS D:\> $result.ReturnValue
2
PS D:\> Remove-WmiObject -InputObject $s3
Remove-WmiObject : Access denied
At line:1 char:1
+ Remove-WmiObject -InputObject $s3
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidOperation: (:) [Remove-WmiObject], ManagementException
+ FullyQualifiedErrorId : RemoveWMIManagementException,Microsoft.PowerShell.Commands.RemoveWmiObject
PS D:\>
For my situation I needed to be running 'As Administrator'
You can try to use the runner in atom Hit Ctrl+R (Alt+R on Win/Linux) to launch the runner for the active window. Hit Ctrl+Shift+R (Alt+Shift+R on Win/Linux) to run the currently selected text in the active window. Hit Ctrl+Shift+C to kill a currently running process. Hit Escape to close the runner window
xargs
will do what you want:
git ls-files | xargs cat | wc -l
But with more information and probably better, you can do:
git ls-files | xargs wc -l
Try SilentCMD. This is a small freeware program that executes a batch file without displaying the command prompt window.
Strings in Python are immutable (meaning that their data cannot be modified) so the replace method doesn't modify the string - it returns a new string. You could fix your code as follows:
for i in hello:
j = i.replace(' ','')
k.append(j)
However a better way to achieve your aim is to use a list comprehension. For example the following code removes leading and trailing spaces from every string in the list using strip
:
hello = [x.strip(' ') for x in hello]
Using a selection Sort
for(int i = list.size() - 1; i > 0; i--){
int max = i
for(int j = 0; j < i; j++){
if(list.get(j).getName().compareTo(list.get(j).getName()) > 0){
max= j;
}
}
//make the swap
Object temp = list.get(i);
list.get(i) = list.get(max);
list.get(max) = temp;
}
That should work even if one, and only one of the conditions is true :
var str = "bonjour le monde vive le javascript";
var arr = ['bonjour','europe', 'c++'];
function contains(target, pattern){
var value = 0;
pattern.forEach(function(word){
value = value + target.includes(word);
});
return (value === 1)
}
console.log(contains(str, arr));
Here's what I did. I wanted a HTML page setup on our network so I wouldn't have to navigate to various folders to install or upgrade our apps. So what I did was setup a .bat file on our "shared" drive that everyone has access to, in that .bat file I had this code:
start /d "\\server\Software\" setup.exe
The HTML code was:
<input type="button" value="Launch Installer" onclick="window.open('file:///S:Test/Test.bat')" />
(make sure your slashes are correct, I had them the other way and it didn't work)
I preferred to launch the EXE directly but that wasn't possible, but the .bat file allowed me around that. Wish it worked in FF or Chrome, but only IE.
The accepted answer works if you set the JSON as a key/value pair in the form-data
panel (See the image hereunder)
Nevertheless, I am wondering if it is a very clean way to design an API. If it is mandatory for you to upload both image and JSON in a single call maybe it is ok but if you could separate the routes (one for image uploading, the other for JSON body with a proper content-type header), it seems better.
It's easy to achieve this is to just use an Intent like this: (I put the method in a custom class that takes in an Activity as a parameter so it can be called from any Fragment or Activity)
public class UIutils {
private Activity mActivity;
public UIutils(Activity activity){
mActivity = activity;
}
public void showPhoto(Uri photoUri){
Intent intent = new Intent();
intent.setAction(Intent.ACTION_VIEW);
intent.setDataAndType(photoUri, "image/*");
mActivity.startActivity(intent);
}
}
Then to use it just do this:
imageView.setOnClickListener(v1 -> new UIutils(getActivity()).showPhoto(Uri.parse(imageURI)));
I use this with an Image URL but it can be used with stored files as well. If you are accessing images form the phones memory you should use a content provider.
you should register for BOOT_COMPLETE as well as REBOOT
<receiver android:name=".Services.BootComplete">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED"/>
<action android:name="android.intent.action.REBOOT"/>
</intent-filter>
</receiver>
Below illustrates XORing string s with m, and then again to reverse the process:
>>> s='hello, world'
>>> m='markmarkmark'
>>> s=''.join(chr(ord(a)^ord(b)) for a,b in zip(s,m))
>>> s
'\x05\x04\x1e\x07\x02MR\x1c\x02\x13\x1e\x0f'
>>> s=''.join(chr(ord(a)^ord(b)) for a,b in zip(s,m))
>>> s
'hello, world'
>>>
Using C - No built in functions
string_contains() does all the heavy lifting and returns 1 based index. Rest are driver and helper codes.
Assign a pointer to the main string and the substring, increment substring pointer when matching, stop looping when substring pointer is equal to substring length.
read_line() - A little bonus code for reading the user input without predefining the size of input user should provide.
#include <stdio.h>
#include <stdlib.h>
int string_len(char * string){
int len = 0;
while(*string!='\0'){
len++;
string++;
}
return len;
}
int string_contains(char *string, char *substring){
int start_index = 0;
int string_index=0, substring_index=0;
int substring_len =string_len(substring);
int s_len = string_len(string);
while(substring_index<substring_len && string_index<s_len){
if(*(string+string_index)==*(substring+substring_index)){
substring_index++;
}
string_index++;
if(substring_index==substring_len){
return string_index-substring_len+1;
}
}
return 0;
}
#define INPUT_BUFFER 64
char *read_line(){
int buffer_len = INPUT_BUFFER;
char *input = malloc(buffer_len*sizeof(char));
int c, count=0;
while(1){
c = getchar();
if(c==EOF||c=='\n'){
input[count]='\0';
return input;
}else{
input[count]=c;
count++;
}
if(count==buffer_len){
buffer_len+=INPUT_BUFFER;
input = realloc(input, buffer_len*sizeof(char));
}
}
}
int main(void) {
while(1){
printf("\nEnter the string: ");
char *string = read_line();
printf("Enter the sub-string: ");
char *substring = read_line();
int position = string_contains(string,substring);
if(position){
printf("Found at position: %d\n", position);
}else{
printf("Not Found\n");
}
}
return 0;
}
LocalDate date = new Date(); date.lengthOfMonth()
or
DateTimeFormatter formatter = DateTimeFormatter.ofPattern("YYYY-MM-dd");
DateTimeFormatter monthFormatter = DateTimeFormatter.ofPattern("MMM");
String stringDate = formatter.format(date);
String month = monthFormatter.format(date);
I tried:
<input id="btnTest" type="button" value="button" />
<script type="text/javascript">
$(document).ready( function() {
$('#btnTest').click( function() {
$.ajax({
type: "POST",
url: "/Login/Test",
data: { ListID: '1', ItemName: 'test' },
dataType: "json",
success: function(response) { alert(response); },
error: function(xhr, ajaxOptions, thrownError) { alert(xhr.responseText); }
});
});
});
</script>
and C#:
[HttpPost]
public ActionResult Test(string ListID, string ItemName)
{
return Content(ListID + " " + ItemName);
}
It worked. Remove contentType
and set data
without double quotes.
You have to configure SMTP on your server. You can use G Suite SMTP by Google for free:
<?php
$mail = new PHPMailer(true);
// Send mail using Gmail
if($send_using_gmail){
$mail->IsSMTP(); // telling the class to use SMTP
$mail->SMTPAuth = true; // enable SMTP authentication
$mail->SMTPSecure = "ssl"; // sets the prefix to the servier
$mail->Host = "smtp.gmail.com"; // sets GMAIL as the SMTP server
$mail->Port = 465; // set the SMTP port for the GMAIL server
$mail->Username = "[email protected]"; // GMAIL username
$mail->Password = "your-gmail-password"; // GMAIL password
}
// Typical mail data
$mail->AddAddress($email, $name);
$mail->SetFrom($email_from, $name_from);
$mail->Subject = "My Subject";
$mail->Body = "Mail contents";
try{
$mail->Send();
echo "Success!";
} catch(Exception $e){
// Something went bad
echo "Fail :(";
}
?>
Read more about PHPMailer
here.
killall -9 ruby
will kill all the ruby processes, and at-least on my machine, rails servers appear as ruby processes. killall -9 rails
is much more specific and doesn't work for older versions of rails servers (it gives a 'rails:no process found' because the process is named ruby)
Encountered this problem a while ago. After submitting a form in activeadmin, the rails server just hanged and I was unable to kill it using normal means (even after ctrl+z it was still running in the background). Learner's answer helped, but this command doesn't need process id.
I fix the lack of example's library here:
<link href="https://cdnjs.cloudflare.com/ajax/libs/select2/3.5.2/select2.css" rel="stylesheet"/>
<script src="https://cdnjs.cloudflare.com/ajax/libs/select2/3.5.2/select2.js">
Yes that's the correct method to do it with a GET request.
However, please remember that multiple query string parameters should be separated with &
eg. ?variable1=value1&variable2=value2
The solution for me on a CentOS 8 system was checking the System Cryptography Policy by verifying the /etc/crypto-policies/config reads the default value of DEFAULT rather than any other value.
Once changing this value to DEFAULT, run the following command:
/usr/bin/update-crypto-policies --set DEFAULT
Rerun the curl command and it should work.
Just include preventDefault() function in the code,
$("#txtSearchProdAssign").keydown(function (e)
{
if (e.keyCode == 13)
{
e.preventDefault();
$('input[name = butAssignProd]').click();
}
});
try this one:
<table style="border:1px solid">
<tr>
<td style="min-width:50px">one</td>
<td style="min-width:100px">two</td>
</tr>
</table>
_x000D_
you could use an Entity:
FileEntity entity = new FileEntity(jsonFile, "application/json");
String jsonString = EntityUtils.toString(entity)
showInventory(player); // I get the error here.
void showInventory(player& obj) { // By Johnny :D
this means that player is an datatype and showInventory expect an referance to an variable of type player.
so the correct code will be
void showInventory(player& obj) { // By Johnny :D
for(int i = 0; i < 20; i++) {
std::cout << "\nINVENTORY:\n" + obj.getItem(i);
i++;
std::cout << "\t\t\t" + obj.getItem(i) + "\n";
i++;
}
}
players myPlayers[10];
std::string toDo() //BY KEATON
{
std::string commands[5] = // This is the valid list of commands.
{"help", "inv"};
std::string ans;
std::cout << "\nWhat do you wish to do?\n>> ";
std::cin >> ans;
if(ans == commands[0]) {
helpMenu();
return NULL;
}
else if(ans == commands[1]) {
showInventory(myPlayers[0]); // or any other index,also is not necessary to have an array
return NULL;
}
}
Abie, it all comes down to your use case. Rather than relying on someone else's account of their use case, feel free to post your use case to the rabbitmq-discuss list. Asking on twitter will get you some responses too. Best wishes, alexis
you can use this:
if ("ABCDEFGHIJKLMNOPQRSTUVWXYZ".contains(String.valueOf(yourChar)))
note that you do not need to create a separate String with the letters A-Z.
C# Test Coverage Tool has very low overhead, handles huge systems of files, intuitive GUI showing coverage on specific files, and generated report with coverage breakdown at method, class, and package levels.
The following will order your data depending on both column in descending order.
ORDER BY article_rating DESC, article_time DESC
One important thing to note about ng-if and ng-show is that when using form controls it is better to use ng-if
because it completely removes the element from the dom.
This difference is important because if you create an input field with required="true"
and then set ng-show="false"
to hide it, Chrome will throw the following error when the user tries to submit the form:
An invalid form control with name='' is not focusable.
The reason being the input field is present and it is required
but since it is hidden Chrome cannot focus on it. This can literally break your code as this error halts script execution. So be careful!
Or you can also use eval(input('prompt'))
.
You can stringify the JSON Object with JSON.stringify(jsonObject) and receive it on controller as String.
In the Controller, you can use the javax.json to convert and manipulate this.
Download and add the .jar to the project libs and import the JsonObject.
To create an json object, you can use
JsonObjectBuilder job = Json.createObjectBuilder();
job.add("header1", foo1);
job.add("header2", foo2);
JsonObject json = job.build();
To read it from String, you can use
JsonReader jr = Json.createReader(new StringReader(jsonString));
JsonObject json = jsonReader.readObject();
jsonReader.close();
You Could also use this.. it works assuming 'yourimage.jpg' is in your public folder.
<img src={'./yourimage.jpg'}/>
city = 'Ribeir\xc3\xa3o Preto'
print city.decode('cp1252').encode('utf-8')
Xcode 10
cross-project references
[About] Explicit dependency
[About] //Xcode 10
Build Phases -> Target Dependencies -> + Add items
//Xcode 11
Build Phases -> Dependencies -> + Add items
In Choose items to add:
dialog you will see only targets from your project and the sub-project
CONVERT(char(2), getdate(), 101)
If upload_file
is meant to be the file, use:
files = {'upload_file': open('file.txt','rb')}
values = {'DB': 'photcat', 'OUT': 'csv', 'SHORT': 'short'}
r = requests.post(url, files=files, data=values)
and requests
will send a multi-part form POST body with the upload_file
field set to the contents of the file.txt
file.
The filename will be included in the mime header for the specific field:
>>> import requests
>>> open('file.txt', 'wb') # create an empty demo file
<_io.BufferedWriter name='file.txt'>
>>> files = {'upload_file': open('file.txt', 'rb')}
>>> print(requests.Request('POST', 'http://example.com', files=files).prepare().body.decode('ascii'))
--c226ce13d09842658ffbd31e0563c6bd
Content-Disposition: form-data; name="upload_file"; filename="file.txt"
--c226ce13d09842658ffbd31e0563c6bd--
Note the filename="file.txt"
parameter.
You can use a tuple for the files
mapping value, with between 2 and 4 elements, if you need more control. The first element is the filename, followed by the contents, and an optional content-type header value and an optional mapping of additional headers:
files = {'upload_file': ('foobar.txt', open('file.txt','rb'), 'text/x-spam')}
This sets an alternative filename and content type, leaving out the optional headers.
If you are meaning the whole POST body to be taken from a file (with no other fields specified), then don't use the files
parameter, just post the file directly as data
. You then may want to set a Content-Type
header too, as none will be set otherwise. See Python requests - POST data from a file.
I got a similar error message like TCP error code 10061: No connection could be made because the target machine actively refused it in my current project. I find this 10061 error code cannot distinguish the case that the service endpoint is not started and the case that it is blocked by the firewall. Often, the firewall can be switched off, but the problem is still there.
You can test your code in the below two ways.
Above is my fix. It works on my machine. I hope it helps!
You have to do the following instructions :
Click on Build located in the toolbar, then
Clean project
-> Rebuild Project
You can also use the void operator to obtain an undefined value:
if (input !== void 0) {
// do stuff
}
(And yes, as noted in another answer, this will throw an error if the variable was not declared, but this case can often be ruled out either by code inspection, or by code refactoring, e.g. using window.input !== void 0
for testing global variables or adding var input
.)
Suppose you want to copy the contents from a folder where you have docker file into your container. Use ADD:
RUN mkdir /temp
ADD folder /temp/Newfolder
it will add to your container with temp/newfolder
folder is the folder/directory where you have the dockerfile, more concretely, where you put your content and want to copy that.
Now can you check your copied/added folder by runining container and see the content using ls
To accomplish this in all browsers you need to use a combination of @energee, @Richard and @Feuermurmel methods.
<a href="" style="display: block; z-index: 1;">
<object data="" style="z-index: -1; pointer-events: none;" />
</a>
Adding:
pointer-events: none;
makes it work in Firefox.display: block;
gets it working in Chrome, and Safari.z-index: 1; z-index: -1;
makes it work in IE as well.I had the same thing on Windows 7 where I had the device properly set and the driver installed, and I was routinely running on the device. Then suddenly I started getting this error every time. I opened the Edit Configurations dialog as described above, switched to an emulator, tried one run, then went to the same dialog and changed back to USB. Then if worked again.
Toolbar toolbar=findViewById(R.id.toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
if (getSupportActionBar()==null){
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setDisplayShowHomeEnabled(true);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
if(item.getItemId()==android.R.id.home)
finish();
return super.onOptionsItemSelected(item);
}
Another approach using the new Swift 2 syntax is to use guard and nest it all in one conditional.
guard let touch = object.AnyObject() as? UITouch, let picker = touch.view as? UIPickerView else {
return //Do Nothing
}
//Do something with picker
Perhaps you could try using the DateTime.FromOADate
method to convert between Excel and .net.
I use this method to get complete path to jar or exe.
File pto = new File(YourClass.class.getProtectionDomain().getCodeSource().getLocation().toURI());
pto.getAbsolutePath());
To parallelize this...
for i in $(whatever_list) ; do
do_something $i
done
Translate it to this...
for i in $(whatever_list) ; do echo $i ; done | ## execute in parallel...
(
export -f do_something ## export functions (if needed)
export PATH ## export any variables that are required
xargs -I{} --max-procs 0 bash -c ' ## process in batches...
{
echo "processing {}" ## optional
do_something {}
}'
)
--max-procs
based on how much parallelism you want (0
means "all at once").xargs
-- but it isn't always installed by default.for
loop isn't strictly necessary in this example since echo $i
is basically just regenerating the output of $(whatever_list
). I just think the use of the for
keyword makes it a little easier to see what is going on.Here's a simplified working example...
for i in {0..5} ; do echo $i ; done |xargs -I{} --max-procs 2 bash -c '
{
echo sleep {}
sleep 2s
}'
This article covers the question electrictoolbox.com/php-catch-multiple-exception-types. Content of the post copied directly from the article:
Example exceptions
Here's some example exceptions that have been defined for the purposes of this example:
class FooException extends Exception
{
public function __construct($message = null, $code = 0)
{
// do something
}
}
class BarException extends Exception
{
public function __construct($message = null, $code = 0)
{
// do something
}
}
class BazException extends Exception
{
public function __construct($message = null, $code = 0)
{
// do something
}
}
Handling multiple exceptions
It's very simple - there can be a catch block for each exception type that can be thrown:
try
{
// some code that might trigger a Foo/Bar/Baz/Exception
}
catch(FooException $e)
{
// we caught a foo exception
}
catch(BarException $e)
{
// we caught a bar exception
}
catch(BazException $e)
{
// we caught a baz exception
}
catch(Exception $e)
{
// we caught a normal exception
// or an exception that wasn't handled by any of the above
}
If an exception is thrown that is not handled by any of the other catch statements it will be handled by the catch(Exception $e) block. It does not necessarily have to be the last one.
In Vuetify 2.x, v-layout and v-flex are replaced by v-row and v-col respectively. To center the content both vertically and horizontally, we have to instruct the v-row component to do it:
<v-container fill-height>
<v-row justify="center" align="center">
<v-col cols="12" sm="4">
Centered both vertically and horizontally
</v-col>
</v-row>
</v-container>
Why not create a class Book with properties: Number, Title, and Price. Then store them in a single dimensional array? That way instead of calling
Book[i][j]
..to get your books title, call
Book[i].Title
Seems to me like it would be a bit more manageable and code friendly.
There isn't really a way to do this without the css getting a little convoluted, but here's the cleanest solution I could put together (the breakpoints in this are just for example purposes, change them to whatever breakpoints you're actually using.) The key is :nth-of-type
(or :nth-child
-- either would work in this case.)
Smallest viewport:
@media (max-width:$smallest-breakpoint) {
.row div {
background: #eee;
}
.row div:nth-of-type(2n) {
background: #fff;
}
}
Medium viewport:
@media (min-width:$smallest-breakpoint) and (max-width:$mid-breakpoint) {
.row div {
background: #eee;
}
.row div:nth-of-type(4n+1), .row div:nth-of-type(4n+2) {
background: #fff;
}
}
Largest viewport:
@media (min-width:$mid-breakpoint) and (max-width:9999px) {
.row div {
background: #eee;
}
.row div:nth-of-type(6n+4),
.row div:nth-of-type(6n+5),
.row div:nth-of-type(6n+6) {
background: #fff;
}
}
Working fiddle here
Aside from @Verhás István answer (which I like), I was expecting a one-liner for the question:
${project.reporting.outputDirectory}
resolves to target/site
in your project.
You just wrap your query in another one:
SELECT COUNT(*), SUM(Age)
FROM (
SELECT availables.bookdate AS Count, DATEDIFF(now(),availables.updated_at) as Age
FROM availables
INNER JOIN rooms
ON availables.room_id=rooms.id
WHERE availables.bookdate BETWEEN '2009-06-25' AND date_add('2009-06-25', INTERVAL 4 DAY) AND rooms.hostel_id = 5094
GROUP BY availables.bookdate
) AS tmp;
In JUnit 4.13 you can do:
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertThrows;
...
@Test
void exceptionTesting() {
IllegalArgumentException exception = assertThrows(
IllegalArgumentException.class,
() -> { throw new IllegalArgumentException("a message"); }
);
assertEquals("a message", exception.getMessage());
}
This also works in JUnit 5 but with different imports:
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertThrows;
...
Assuming the type in your example, definitely prefer to initialize fields in the constructor. The exceptional cases are:
I always think of the field listing at the top of a class as the table of contents (what is contained herein, not how it is used), and the constructor as the introduction. Methods of course are chapters.
In my case, I needed to use RedirectToAction to solve the problem.
[HttpGet]
[ControleDeAcessoAuthorize("Report/ExportToPDF")]
public ActionResult ExportToPDF(int id, string month, string output)
{
try
{
// Validate
if (output != "PDF")
{
throw new Exception("Invalid output.");
}
else
{
...// code to generate report in PDF format
}
}
catch (Exception ex)
{
return RedirectToAction("Error");
}
}
[ControleDeAcessoAuthorize("Report/Error")]
public ActionResult Error()
{
return View();
}
Using the multicol package and embedding your list in a multicols
environment does what you want:
\documentclass{article}
\usepackage{multicol}
\begin{document}
\begin{multicols}{2}
\begin{enumerate}
\item a
\item b
\item c
\item d
\item e
\item f
\end{enumerate}
\end{multicols}
\end{document}
Create as many comparators as necessary. After, call the method "thenComparing" for each order category. It's a way of doing by Streams. See:
//Sort by first and last name
System.out.println("\n2.Sort list of person objects by firstName then "
+ "by lastName then by age");
Comparator<Person> sortByFirstName
= (p, o) -> p.firstName.compareToIgnoreCase(o.firstName);
Comparator<Person> sortByLastName
= (p, o) -> p.lastName.compareToIgnoreCase(o.lastName);
Comparator<Person> sortByAge
= (p, o) -> Integer.compare(p.age,o.age);
//Sort by first Name then Sort by last name then sort by age
personList.stream().sorted(
sortByFirstName
.thenComparing(sortByLastName)
.thenComparing(sortByAge)
).forEach(person->
System.out.println(person));
Look: Sort user defined object on multiple fields – Comparator (lambda stream)
If you don't need to worry so much about older browsers, this is exactly what Sets are designed for.
The Set object lets you store unique values of any type, whether primitive values or object references.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Set
const set1 = new Set([1, 2, 3, 4, 5, 1]);
// returns Set(5) {1, 2, 3, 4, 5}
import os
os.system('file_path/filename.mp3')
Ruby provides a built-in function for checking the length of a string. Say it's called s
:
if s.length <= 25
# We're OK
else
# Too long
end
In newer version of numpy
(>1.8.x), numpy.meshgrid()
provides a much faster implementation:
@pv's solution
In [113]:
%timeit cartesian(([1, 2, 3], [4, 5], [6, 7]))
10000 loops, best of 3: 135 µs per loop
In [114]:
cartesian(([1, 2, 3], [4, 5], [6, 7]))
Out[114]:
array([[1, 4, 6],
[1, 4, 7],
[1, 5, 6],
[1, 5, 7],
[2, 4, 6],
[2, 4, 7],
[2, 5, 6],
[2, 5, 7],
[3, 4, 6],
[3, 4, 7],
[3, 5, 6],
[3, 5, 7]])
numpy.meshgrid()
use to be 2D only, now it is capable of ND. In this case, 3D:
In [115]:
%timeit np.array(np.meshgrid([1, 2, 3], [4, 5], [6, 7])).T.reshape(-1,3)
10000 loops, best of 3: 74.1 µs per loop
In [116]:
np.array(np.meshgrid([1, 2, 3], [4, 5], [6, 7])).T.reshape(-1,3)
Out[116]:
array([[1, 4, 6],
[1, 5, 6],
[2, 4, 6],
[2, 5, 6],
[3, 4, 6],
[3, 5, 6],
[1, 4, 7],
[1, 5, 7],
[2, 4, 7],
[2, 5, 7],
[3, 4, 7],
[3, 5, 7]])
Note that the order of the final resultant is slightly different.
You are modifying the collection in this line:
colStates[key] = 0;
By doing so, you are essentially deleting and reinserting something at that point (as far as IEnumerable is concerned anyways.
If you edit a member of the value you are storing, that would be OK, but you are editing the value itself and IEnumberable doesn't like that.
The solution I've used is to eliminate the foreach loop and just use a for loop. A simple for loop won't check for changes that you know won't effect the collection.
Here's how you could do it:
List<string> keys = new List<string>(colStates.Keys);
for(int i = 0; i < keys.Count; i++)
{
string key = keys[i];
double Percent = colStates[key] / TotalCount;
if (Percent < 0.05)
{
OtherCount += colStates[key];
colStates[key] = 0;
}
}
You could create a user form:
Another way to make column aligned is as follows:
using namespace std;
cout.width(20); cout << left << "Artist";
cout.width(20); cout << left << "Title";
cout.width(10); cout << left << "Price";
...
cout.width(20); cout << left << artist;
cout.width(20); cout << left << title;
cout.width(10); cout << left << price;
We should estimate maximum length of values for each column. In this case, values of "Artist" column should not exceed 20 characters and so on.
There is a full online course called "Software Debugging" by Andreas Zeller on Udacity, packed with tips about debugging:
Course Summary
In this class you will learn how to debug programs systematically, how to automate the debugging process and build several automated debugging tools in Python.
Why Take This Course?
At the end of this course you will have a solid understanding about systematic debugging, will know how to automate debugging and will have built several functional debugging tools in Python.
Prerequisites and Requirements
Basic knowledge of programming and Python at the level of Udacity CS101 or better is required. Basic understanding of Object-oriented programming is helpful.
Highly recommended.
You can enable whitespace trimming at file save time from settings:
"files.trimTrailingWhitespace": true
setting to the User Settings document if it's not already there. This is so you aren't editing the Default Setting directly, but instead adding to it.We also added a new command to trigger this manually (Trim Trailing Whitespace from the command palette).
I would have done it like this. Short and sweet :)
Sub test()
Dim rngToSearch As Range
Dim FirstBlankCell As Range
Dim firstEmptyRow As Long
Set rngToSearch = Sheet1.Range("A:A")
'Check first cell isn't empty
If IsEmpty(rngToSearch.Cells(1, 1)) Then
firstEmptyRow = rngToSearch.Cells(1, 1).Row
Else
Set FirstBlankCell = rngToSearch.FindNext(After:=rngToSearch.Cells(1, 1))
If Not FirstBlankCell Is Nothing Then
firstEmptyRow = FirstBlankCell.Row
Else
'no empty cell in range searched
End If
End If
End Sub
Updated to check if first row is empty.
Edit: Update to include check if entire row is empty
Option Explicit
Sub test()
Dim rngToSearch As Range
Dim firstblankrownumber As Long
Set rngToSearch = Sheet1.Range("A1:C200")
firstblankrownumber = FirstBlankRow(rngToSearch)
Debug.Print firstblankrownumber
End Sub
Function FirstBlankRow(ByVal rngToSearch As Range, Optional activeCell As Range) As Long
Dim FirstBlankCell As Range
If activeCell Is Nothing Then Set activeCell = rngToSearch.Cells(1, 1)
'Check first cell isn't empty
If WorksheetFunction.CountA(rngToSearch.Cells(1, 1).EntireRow) = 0 Then
FirstBlankRow = rngToSearch.Cells(1, 1).Row
Else
Set FirstBlankCell = rngToSearch.FindNext(After:=activeCell)
If Not FirstBlankCell Is Nothing Then
If WorksheetFunction.CountA(FirstBlankCell.EntireRow) = 0 Then
FirstBlankRow = FirstBlankCell.Row
Else
Set activeCell = FirstBlankCell
FirstBlankRow = FirstBlankRow(rngToSearch, activeCell)
End If
Else
'no empty cell in range searched
End If
End If
End Function
When using aggregate functions to filter, you must use a HAVING statement.
SELECT *
FROM tblMoney
HAVING Sum(CASH) > 500
Vince Yuan's code is great but it seems to be something wrong.
function download(url, dest, callback) {
var file = fs.createWriteStream(dest);
var request = http.get(url, function (response) {
response.pipe(file);
file.on('finish', function () {
file.close(callback); // close() is async, call callback after close completes.
});
file.on('error', function (err) {
fs.unlink(dest); // Delete the file async. (But we don't check the result)
if (callback)
callback(err.message);
});
});
}
Same codes from Nickolay above, but tested on IE9 and chrome (and removed the extra rendering):
window.onload = window.onresize = function() {
var canvas = document.getElementById('canvas');
var viewportWidth = window.innerWidth;
var viewportHeight = window.innerHeight;
var canvasWidth = viewportWidth * 0.8;
var canvasHeight = canvasWidth / 2;
canvas.style.position = "absolute";
canvas.setAttribute("width", canvasWidth);
canvas.setAttribute("height", canvasHeight);
canvas.style.top = (viewportHeight - canvasHeight) / 2 + "px";
canvas.style.left = (viewportWidth - canvasWidth) / 2 + "px";
}
HTML:
<body>
<canvas id="canvas" style="background: #ffffff">
Canvas is not supported.
</canvas>
</body>
The top and left offset only works when I add px
.
I made this because I needed an easy way to split strings and c-based strings... Hopefully someone else can find it useful as well. Also it doesn't rely on tokens and you can use fields as delimiters, which is another key I needed.
I'm sure there's improvements that can be made to even further improve its elegance and please do by all means
StringSplitter.hpp:
#include <vector>
#include <iostream>
#include <string.h>
using namespace std;
class StringSplit
{
private:
void copy_fragment(char*, char*, char*);
void copy_fragment(char*, char*, char);
bool match_fragment(char*, char*, int);
int untilnextdelim(char*, char);
int untilnextdelim(char*, char*);
void assimilate(char*, char);
void assimilate(char*, char*);
bool string_contains(char*, char*);
long calc_string_size(char*);
void copy_string(char*, char*);
public:
vector<char*> split_cstr(char);
vector<char*> split_cstr(char*);
vector<string> split_string(char);
vector<string> split_string(char*);
char* String;
bool do_string;
bool keep_empty;
vector<char*> Container;
vector<string> ContainerS;
StringSplit(char * in)
{
String = in;
}
StringSplit(string in)
{
size_t len = calc_string_size((char*)in.c_str());
String = new char[len + 1];
memset(String, 0, len + 1);
copy_string(String, (char*)in.c_str());
do_string = true;
}
~StringSplit()
{
for (int i = 0; i < Container.size(); i++)
{
if (Container[i] != NULL)
{
delete[] Container[i];
}
}
if (do_string)
{
delete[] String;
}
}
};
StringSplitter.cpp:
#include <string.h>
#include <iostream>
#include <vector>
#include "StringSplit.hpp"
using namespace std;
void StringSplit::assimilate(char*src, char delim)
{
int until = untilnextdelim(src, delim);
if (until > 0)
{
char * temp = new char[until + 1];
memset(temp, 0, until + 1);
copy_fragment(temp, src, delim);
if (keep_empty || *temp != 0)
{
if (!do_string)
{
Container.push_back(temp);
}
else
{
string x = temp;
ContainerS.push_back(x);
}
}
else
{
delete[] temp;
}
}
}
void StringSplit::assimilate(char*src, char* delim)
{
int until = untilnextdelim(src, delim);
if (until > 0)
{
char * temp = new char[until + 1];
memset(temp, 0, until + 1);
copy_fragment(temp, src, delim);
if (keep_empty || *temp != 0)
{
if (!do_string)
{
Container.push_back(temp);
}
else
{
string x = temp;
ContainerS.push_back(x);
}
}
else
{
delete[] temp;
}
}
}
long StringSplit::calc_string_size(char* _in)
{
long i = 0;
while (*_in++)
{
i++;
}
return i;
}
bool StringSplit::string_contains(char* haystack, char* needle)
{
size_t len = calc_string_size(needle);
size_t lenh = calc_string_size(haystack);
while (lenh--)
{
if (match_fragment(haystack + lenh, needle, len))
{
return true;
}
}
return false;
}
bool StringSplit::match_fragment(char* _src, char* cmp, int len)
{
while (len--)
{
if (*(_src + len) != *(cmp + len))
{
return false;
}
}
return true;
}
int StringSplit::untilnextdelim(char* _in, char delim)
{
size_t len = calc_string_size(_in);
if (*_in == delim)
{
_in += 1;
return len - 1;
}
int c = 0;
while (*(_in + c) != delim && c < len)
{
c++;
}
return c;
}
int StringSplit::untilnextdelim(char* _in, char* delim)
{
int s = calc_string_size(delim);
int c = 1 + s;
if (!string_contains(_in, delim))
{
return calc_string_size(_in);
}
else if (match_fragment(_in, delim, s))
{
_in += s;
return calc_string_size(_in);
}
while (!match_fragment(_in + c, delim, s))
{
c++;
}
return c;
}
void StringSplit::copy_fragment(char* dest, char* src, char delim)
{
if (*src == delim)
{
src++;
}
int c = 0;
while (*(src + c) != delim && *(src + c))
{
*(dest + c) = *(src + c);
c++;
}
*(dest + c) = 0;
}
void StringSplit::copy_string(char* dest, char* src)
{
int i = 0;
while (*(src + i))
{
*(dest + i) = *(src + i);
i++;
}
}
void StringSplit::copy_fragment(char* dest, char* src, char* delim)
{
size_t len = calc_string_size(delim);
size_t lens = calc_string_size(src);
if (match_fragment(src, delim, len))
{
src += len;
lens -= len;
}
int c = 0;
while (!match_fragment(src + c, delim, len) && (c < lens))
{
*(dest + c) = *(src + c);
c++;
}
*(dest + c) = 0;
}
vector<char*> StringSplit::split_cstr(char Delimiter)
{
int i = 0;
while (*String)
{
if (*String != Delimiter && i == 0)
{
assimilate(String, Delimiter);
}
if (*String == Delimiter)
{
assimilate(String, Delimiter);
}
i++;
String++;
}
String -= i;
delete[] String;
return Container;
}
vector<string> StringSplit::split_string(char Delimiter)
{
do_string = true;
int i = 0;
while (*String)
{
if (*String != Delimiter && i == 0)
{
assimilate(String, Delimiter);
}
if (*String == Delimiter)
{
assimilate(String, Delimiter);
}
i++;
String++;
}
String -= i;
delete[] String;
return ContainerS;
}
vector<char*> StringSplit::split_cstr(char* Delimiter)
{
int i = 0;
size_t LenDelim = calc_string_size(Delimiter);
while(*String)
{
if (!match_fragment(String, Delimiter, LenDelim) && i == 0)
{
assimilate(String, Delimiter);
}
if (match_fragment(String, Delimiter, LenDelim))
{
assimilate(String,Delimiter);
}
i++;
String++;
}
String -= i;
delete[] String;
return Container;
}
vector<string> StringSplit::split_string(char* Delimiter)
{
do_string = true;
int i = 0;
size_t LenDelim = calc_string_size(Delimiter);
while (*String)
{
if (!match_fragment(String, Delimiter, LenDelim) && i == 0)
{
assimilate(String, Delimiter);
}
if (match_fragment(String, Delimiter, LenDelim))
{
assimilate(String, Delimiter);
}
i++;
String++;
}
String -= i;
delete[] String;
return ContainerS;
}
Examples:
int main(int argc, char*argv[])
{
StringSplit ss = "This:CUT:is:CUT:an:CUT:example:CUT:cstring";
vector<char*> Split = ss.split_cstr(":CUT:");
for (int i = 0; i < Split.size(); i++)
{
cout << Split[i] << endl;
}
return 0;
}
Will output:
This
is
an
example
cstring
int main(int argc, char*argv[])
{
StringSplit ss = "This:is:an:example:cstring";
vector<char*> Split = ss.split_cstr(':');
for (int i = 0; i < Split.size(); i++)
{
cout << Split[i] << endl;
}
return 0;
}
int main(int argc, char*argv[])
{
string mystring = "This[SPLIT]is[SPLIT]an[SPLIT]example[SPLIT]string";
StringSplit ss = mystring;
vector<string> Split = ss.split_string("[SPLIT]");
for (int i = 0; i < Split.size(); i++)
{
cout << Split[i] << endl;
}
return 0;
}
int main(int argc, char*argv[])
{
string mystring = "This|is|an|example|string";
StringSplit ss = mystring;
vector<string> Split = ss.split_string('|');
for (int i = 0; i < Split.size(); i++)
{
cout << Split[i] << endl;
}
return 0;
}
To keep empty entries (by default empties will be excluded):
StringSplit ss = mystring;
ss.keep_empty = true;
vector<string> Split = ss.split_string(":DELIM:");
The goal was to make it similar to C#'s Split() method where splitting a string is as easy as:
String[] Split =
"Hey:cut:what's:cut:your:cut:name?".Split(new[]{":cut:"}, StringSplitOptions.None);
foreach(String X in Split)
{
Console.Write(X);
}
I hope someone else can find this as useful as I do.
var myApp = angular.module('myApp',[]);
myApp .directive('myDirective', function ($timeout) {
return function (scope, element, attr) {
$timeout(function(){
element.val("value = "+attr.value);
});
}
});
function MyCtrl($scope) {
}
Use $timeout because directive call after dom load so your changes doesn`'t apply
Looks like Windef.h
(a la #include <windows.h>
) has max
and min
(lower case) macros, that also suffer from the "double evaluation" difficulty, but they're there for those that don't want to re-roll their own :)
If you need the result to be timezone-aware, you can use the replace()
method of datetime
objects. This preserves timezone, so you can do
>>> from django.utils import timezone
>>> now = timezone.now()
>>> now
datetime.datetime(2018, 8, 30, 14, 15, 43, 726252, tzinfo=<UTC>)
>>> now.replace(hour=0, minute=0, second=0, microsecond=0)
datetime.datetime(2018, 8, 30, 0, 0, tzinfo=<UTC>)
Note that this returns a new datetime object -- now
remains unchanged.
In Python 3.8+ you can do
import hashlib
with open("your_filename.png", "rb") as f:
file_hash = hashlib.md5()
while chunk := f.read(8192):
file_hash.update(chunk)
print(file_hash.digest())
print(file_hash.hexdigest()) # to get a printable str instead of bytes
On Python 3.7 and below:
with open("your_filename.png", "rb") as f:
file_hash = hashlib.md5()
chunk = f.read(8192)
while chunk:
file_hash.update(chunk)
chunk = f.read(8192)
print(file_hash.hexdigest())
This reads the file 8192 (or 2¹³) bytes at a time instead of all at once with f.read()
to use less memory.
Consider using hashlib.blake2b
instead of md5
(just replace md5
with blake2b
in the above snippets). It's cryptographically secure and faster than MD5.
If you want to dynamically change it, I prefer using SqlConnectionStringBuilder .
It allows you to convert ConnectionString i.e. a string into class Object, All the connection string properties will become its Member.
In this case the real advantage would be that you don't have to worry about If the ConnectionTimeout string part is already exists in the connection string or not?
Also as it creates an Object and its always good to assign value in object rather than manipulating string.
Here is the code sample:
var sscsb = new SqlConnectionStringBuilder(_dbFactory.Database.ConnectionString);
sscsb.ConnectTimeout = 30;
var conn = new SqlConnection(sscsb.ConnectionString);
The 1st one is default, when there is nothing special to return or write. 2nd and 3rd are basically the same where 3rd is a bit more expanded version of 2nd
Try changing "Reports" to "ReportServer" in your url
It is quite easy to solve your task. You should create and use a new variable for summing values of the "Doctor Payment" column.
In your case the variable can be declared like this:
<variable name="total" class="java.lang.Integer" calculation="Sum">
<variableExpression><![CDATA[$F{payment}]]></variableExpression>
</variable>
The working example.
CSV datasource:
doctor_id,payment A1,123 B1,223 C2,234 D3,678 D1,343
The template:
<?xml version="1.0" encoding="UTF-8"?>
<jasperReport ...>
<queryString>
<![CDATA[]]>
</queryString>
<field name="doctor_id" class="java.lang.String"/>
<field name="payment" class="java.lang.Integer"/>
<variable name="total" class="java.lang.Integer" calculation="Sum">
<variableExpression><![CDATA[$F{payment}]]></variableExpression>
</variable>
<columnHeader>
<band height="20" splitType="Stretch">
<staticText>
<reportElement x="0" y="0" width="100" height="20"/>
<box leftPadding="10"/>
<textElement textAlignment="Center" verticalAlignment="Middle">
<font size="10" isBold="true" isItalic="true"/>
</textElement>
<text><![CDATA[Doctor ID]]></text>
</staticText>
<staticText>
<reportElement x="100" y="0" width="100" height="20"/>
<box leftPadding="10"/>
<textElement textAlignment="Center" verticalAlignment="Middle">
<font size="10" isBold="true" isItalic="true"/>
</textElement>
<text><![CDATA[Doctor Payment]]></text>
</staticText>
</band>
</columnHeader>
<detail>
<band height="20" splitType="Stretch">
<textField>
<reportElement x="0" y="0" width="100" height="20"/>
<box leftPadding="10"/>
<textElement/>
<textFieldExpression><![CDATA[$F{doctor_id}]]></textFieldExpression>
</textField>
<textField>
<reportElement x="100" y="0" width="100" height="20"/>
<box leftPadding="10"/>
<textElement/>
<textFieldExpression><![CDATA[$F{payment}]]></textFieldExpression>
</textField>
</band>
</detail>
<summary>
<band height="20">
<staticText>
<reportElement x="0" y="0" width="100" height="20"/>
<box leftPadding="10"/>
<textElement>
<font isBold="true"/>
</textElement>
<text><![CDATA[Total]]></text>
</staticText>
<textField>
<reportElement x="100" y="0" width="100" height="20"/>
<box leftPadding="10"/>
<textElement>
<font isBold="true" isItalic="true"/>
</textElement>
<textFieldExpression><![CDATA[$V{total}]]></textFieldExpression>
</textField>
</band>
</summary>
</jasperReport>
The result will be:
You can find a lot of info in the JasperReports Ultimate Guide.
Since both pip
nor python
commands are not installed along Python in Windows, you will need to use the Windows alternative py
, which is included by default when you installed Python. Then you have the option to specify a general or specific version number after the py
command.
C:\> py -m pip install pandas %= one of Python on the system =%
C:\> py -2 -m pip install pandas %= one of Python 2 on the system =%
C:\> py -2.7 -m pip install pandas %= only for Python 2.7 =%
C:\> py -3 -m pip install pandas %= one of Python 3 on the system =%
C:\> py -3.6 -m pip install pandas %= only for Python 3.6 =%
Alternatively, in order to get pip
to work without py -m
part, you will need to add pip to the PATH environment variable.
C:\> setx PATH "%PATH%;C:\<path\to\python\folder>\Scripts"
Now you can run the following command as expected.
C:\> pip install pandas
connection error: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed
This is caused by your SSL certificate is unable to verify the host server. You can add pypi.python.org to the trusted host or specify an alternative SSL certificate. For more information, please see this post. (Thanks to Anuj Varshney for suggesting this)
C:\> py -m pip install --trusted-host pypi.python.org pip pandas
PermissionError: [WinError 5] Access is denied
This is a caused by when you don't permission to modify the Python site-package folders. You can avoid this with one of the following methods:
Run Windows Command Prompt as administrator (thanks to DataGirl's suggestion) by:
cmd.exe
in the search boxRun pip in user mode by adding --user
option when installing with pip. Which typically install the package to the local %APPDATA% Python folder.
C:\> py -m pip install --user pandas
C:\> py -m venv c:\path\to\new\venv
C:\> <path\to\the\new\venv>\Scripts\activate.bat
There is a default text editor that will be used when Git needs you to type in a message. By default, Git uses your system’s default editor, which is generally Vi or Vim. In your case, it is Vim that Git has chosen. See How do I make Git use the editor of my choice for commits? for details of how to choose another editor. Meanwhile...
You'll want to enter a message before you leave Vim:
...will start a new line for you to type in.
To exit (g)Vim type:
It's worth getting to know Vim, as you can use it for editing text on almost any platform. I recommend the Vim Tutor
, I used it many years ago and have never looked back (barely a day goes by when I don't use Vim).
String
and then try
ing Integer.parseInt()
and if you don't catch
an exception then it's a number, if you do, read a new one, maybe by setting num2 to Integer.MIN_VALUE and using the same type of logic in your example.Below Patch work for me..:)
Step 1: Go to TARGETS -> Build Settings -> No Common Blocks -> No
Step 2: Go to TARGETS -> Build Settings -> enable testability -> No
Setting it back to NO solved the problem!
You can do this using the Storyboard in XCode 6 and above:
Add this to the header file of the class used by your ViewController:
@interface TimeDelayViewController : UIViewController <UITextFieldDelegate>
- (IBAction)dissmissKeyboardOnTap:(id)sender;
@end
Then add this to the implementation file of the same ViewController:
- (IBAction)dissmissKeyboardOnTap:(id)sender{
[[self view]endEditing:YES];
}
This will now be one of the 'Received Actions' for your storyboard scene (i.e. ViewController):
Now you need to hook up this action to the user gesture of touching off the keyboard.
Important - You need to convert the 'UIView' that's contained in your storyboard to a UIControl, so it can receive events. Select the view from your View Controller Scene hierarchy:
...and change its class:
Now drag from the small circle next to the 'received action' for your scene, onto an 'empty' part of your scene (actually you're dragging the 'Received Action' to the UIControl). You'll be shown a selection of events that you can hook up your action to:
Select the 'touch up inside' option. You've now hooked the IBAction you created to a user action of touching off the keyboard. When the user taps off the keyboard, it will now be hidden.
(NOTE: To hook the action to the event, you can also drag from the received action directly onto the UIControl in your View Controllers hierarchy. It's displayed as 'Control' in the hierarchy.)
just see how DataInputStream.readInt() is implemented;
int ch1 = in.read();
int ch2 = in.read();
int ch3 = in.read();
int ch4 = in.read();
if ((ch1 | ch2 | ch3 | ch4) < 0)
throw new EOFException();
return ((ch1 << 24) + (ch2 << 16) + (ch3 << 8) + (ch4 << 0));
How big is m?
You could do something like:
create table two select null foo union all select null;
create temporary table seq ( foo int primary key auto_increment ) auto_increment=9 select a.foo from two a, two b, two c, two d;
select * from seq where foo <= 23;
where the auto_increment is set to n and the where clause compares to m and the number of times the two table is repeated is at least ceil(log(m-n+1)/log(2)).
(The non-temporary two table could be omitted by replacing two with (select null foo union all select null) in the create temporary table seq.)
you can use simple code its work for transaction
Fragment newFragment = new MainCategoryFragment();
FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
ft.replace(R.id.content_frame_NavButtom, newFragment);
ft.commit();
as zsolt mentioned, some regex engines support recursion -- of course, these are typically the ones that use a backtracking algorithm so it won't be particularly efficient. example: /(?>[^{}]*){(?>[^{}]*)(?R)*(?>[^{}]*)}/sm
Just try to re-create connection. In my situation one of jdbc connection stopped working for no reason. From console sqlplus was working ok. It took me 2 hours to realize that If i create the same connection - it works.
This doesn't seem to have <a> </a>
tags so selenium might not be able to detect it as a link.
You may try and use
driver.findElement(By.xpath("//*[@class='ng-binding']")).click();
if this is the only element in that page with this class .
Android does not have a specification to indicate the type of resource string (e.g. text/plain or text/html). There is a workaround, however, that will allow the developer to specify this within the XML file.
Once you define these, you can express yourself with HTML in xml files without ever having to call setText(Html.fromHtml(...)) again. I'm rather surprised that this approach is not part of the API.
This solution works to the degree that the Android studio simulator will display the text as rendered HTML.
<resources>
<string name="app_name">TextViewEx</string>
<string name="string_with_html"><![CDATA[
<em>Hello</em> <strong>World</strong>!
]]></string>
</resources>
Declare the custom attribute namespace, and add the android_ex:isHtml attribute. Also use the subclass of TextView.
<RelativeLayout
...
xmlns:android_ex="http://schemas.android.com/apk/res-auto"
...>
<tv.twelvetone.samples.textviewex.TextViewEx
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/string_with_html"
android_ex:isHtml="true"
/>
</RelativeLayout>
<resources>
<declare-styleable name="TextViewEx">
<attr name="isHtml" format="boolean"/>
<attr name="android:text" />
</declare-styleable>
</resources>
package tv.twelvetone.samples.textviewex;
import android.content.Context;
import android.content.res.TypedArray;
import android.support.annotation.Nullable;
import android.text.Html;
import android.util.AttributeSet;
import android.widget.TextView;
public TextViewEx(Context context, @Nullable AttributeSet attrs) {
super(context, attrs);
TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.TextViewEx, 0, 0);
try {
boolean isHtml = a.getBoolean(R.styleable.TextViewEx_isHtml, false);
if (isHtml) {
String text = a.getString(R.styleable.TextViewEx_android_text);
if (text != null) {
setText(Html.fromHtml(text));
}
}
} catch (Exception e) {
e.printStackTrace();
} finally {
a.recycle();
}
}
}
If you want to use $.getJSON()
you can add the following before the call :
$.ajaxSetup({
scriptCharset: "utf-8",
contentType: "application/json; charset=utf-8"
});
You can use the charset you want instead of utf-8
.
The options are explained here.
contentType :
When sending data to the server, use this content-type
. Default is application/x-www-form-urlencoded
, which is fine for most cases.
scriptCharset :
Only for requests with jsonp
or script
dataType and GET type. Forces the request to be interpreted as a certain charset. Only needed for charset differences between the remote and local content.
You may need one or both ...
$.ajax({
type: 'POST',
url: 'data.asmx/getText',
data: {'argInput' : 'input arg(s)'},
complete: function(xData, status) {
$('#txt').html($(xData.responseXML).text()); // result
}
});
I have try this and it works for me:
Private Sub DelayMs(ms As Long)
Debug.Print TimeValue(Now)
Application.Wait (Now + (ms * 0.00000001))
Debug.Print TimeValue(Now)
End Sub
Private Sub test()
Call DelayMs (2000) 'test code with delay of 2 seconds, see debug window
End Sub
It depends on what you are comparing to None. Some classes have custom comparison methods that treat == None
differently from is None
.
In particular the output of a == None
does not even have to be boolean !! - a frequent cause of bugs.
For a specific example take a numpy array where the ==
comparison is implemented elementwise:
import numpy as np
a = np.zeros(3) # now a is array([0., 0., 0.])
a == None #compares elementwise, outputs array([False, False, False]), i.e. not boolean!!!
a is None #compares object to object, outputs False
I found a tool "webchk” written in Python. Returns a status code for a list of urls. https://pypi.org/project/webchk/
Output looks like this:
? webchk -i ./dxieu.txt | grep '200'
http://salesforce-case-status.dxi.eu/login ... 200 OK (0.108)
https://support.dxi.eu/hc/en-gb ... 200 OK (0.389)
https://support.dxi.eu/hc/en-gb ... 200 OK (0.401)
Hope that helps!
In Linux, you can start a process in a new independent thread by appending an ampersand at the end of the command
mycommand -someparam somevalue &
In Windows, you can use the "start" DOS command
start mycommand -someparam somevalue
None of these suggestions were working for me. I finally found something else I could do - dbms_output.put_line
. For example:
SET SERVEROUTPUT ON
begin
for i in (select dbms_metadata.get_ddl('INDEX', index_name, owner) as ddl from all_indexes where owner = 'MYUSER') loop
dbms_output.put_line(i.ddl);
end loop;
end;
/
Boom. It printed out everything I wanted - no truncating or anything like that. And that works straight in sqlplus
- no need to put it in a separate file or anything.
You can click on the Project window, press Alt-Insert, and select Folder->Assets Folder. Android Studio will add it automatically to the correct location.
You are most likely looking at your Project with the new(ish) "Android View". Note that this is a view and not the actual folder structure on disk (which hasn't changed since the introduction of Gradle as the new build tool). You can switch to the old "Project View" by clicking on the word "Android" at the top of the Project window and selecting "Project".
SELECT DATE_ADD(CURDATE(), INTERVAL 2 DAY)
Here is an example class using CSS named colors:
.semi-transparent {
background: yellow;
opacity: 0.25;
}
This adds a background that is 25% opaque (colored) and 75% transparent.
CAVEAT
Unfortunately, opacity will affect then entire element it's attached to.
So if you have text in that element, it will set the text to 25% opacity too. :-(
The way to get past this is to use the rgba
or hsla
methods to indicate transparency as part of your desired background "color". This allows you to specify the background transparency, independent from the transparency of the other items in your element.
Here are 3 ways to set a blue background at 75% transparency, without affecting other elements:
background: rgba(0%, 0%, 100%, 0.75)
background: rgba(0, 0, 255, 0.75)
background: hsla(240, 100%, 50%, 0.75)
I had a similer problem with SqlClient on WCF service. My solution was to put that lines in client app.config
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0" />
</startup>
Hopes it helps for someone..
The answers above are for older versions of PHP. Use the DateTime class to do any date calculations now that PHP 5.3 is the norm. Eg.
$start_date = new DateTime('2007-09-01 04:10:58');
$since_start = $start_date->diff(new DateTime('2012-09-11 10:25:00'));
echo $since_start->days.' days total<br>';
echo $since_start->y.' years<br>';
echo $since_start->m.' months<br>';
echo $since_start->d.' days<br>';
echo $since_start->h.' hours<br>';
echo $since_start->i.' minutes<br>';
echo $since_start->s.' seconds<br>';
$since_start is a DateInterval object. Note that the days property is available (because we used the diff method of the DateTime class to generate the DateInterval object).
The above code will output:
1837 days total
5 years
0 months
10 days
6 hours
14 minutes
2 seconds
To get the total number of minutes:
$minutes = $since_start->days * 24 * 60;
$minutes += $since_start->h * 60;
$minutes += $since_start->i;
echo $minutes.' minutes';
This will output:
2645654 minutes
Which is the actual number of minutes that has passed between the two dates. The DateTime class will take daylight saving (depending on timezone) into account where the "old way" won't. Read the manual about Date and Time http://www.php.net/manual/en/book.datetime.php
Inside of VBS you can access parameters with
Wscript.Arguments(0)
Wscript.Arguments(1)
and so on. The number of parameter:
Wscript.Arguments.Count
This is an update to the code given by @HAdes to parameterize width, height, and ellipse size.
This implementation automatically calculates required angles, widths, and heights on the fly.
The user control is bound to itself (code-behind) which takes care of all calculations.
XAML
<UserControl x:Class="WpfApplication2.Spinner"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:local="clr-namespace:WpfApplication2"
mc:Ignorable="d"
DataContext="{Binding RelativeSource={RelativeSource Self}}"
d:DesignHeight="300" d:DesignWidth="300">
<UserControl.Resources>
<Color x:Key="FilledColor" A="255" B="155" R="155" G="155"/>
<Color x:Key="UnfilledColor" A="0" B="155" R="155" G="155"/>
<Style x:Key="BusyAnimationStyle" TargetType="Control">
<Setter Property="Background" Value="Transparent"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="Control">
<ControlTemplate.Resources>
<Storyboard x:Key="Animation0" BeginTime="00:00:00.0" RepeatBehavior="Forever">
<ColorAnimationUsingKeyFrames Storyboard.TargetName="ellipseN" Storyboard.TargetProperty="(Shape.Fill).(SolidColorBrush.Color)">
<SplineColorKeyFrame KeyTime="00:00:00.0" Value="{StaticResource FilledColor}"/>
<SplineColorKeyFrame KeyTime="00:00:01.6" Value="{StaticResource UnfilledColor}"/>
</ColorAnimationUsingKeyFrames>
</Storyboard>
<Storyboard x:Key="Animation1" BeginTime="00:00:00.2" RepeatBehavior="Forever">
<ColorAnimationUsingKeyFrames Storyboard.TargetName="ellipseNE" Storyboard.TargetProperty="(Shape.Fill).(SolidColorBrush.Color)">
<SplineColorKeyFrame KeyTime="00:00:00.0" Value="{StaticResource FilledColor}"/>
<SplineColorKeyFrame KeyTime="00:00:01.6" Value="{StaticResource UnfilledColor}"/>
</ColorAnimationUsingKeyFrames>
</Storyboard>
<Storyboard x:Key="Animation2" BeginTime="00:00:00.4" RepeatBehavior="Forever">
<ColorAnimationUsingKeyFrames Storyboard.TargetName="ellipseE" Storyboard.TargetProperty="(Shape.Fill).(SolidColorBrush.Color)">
<SplineColorKeyFrame KeyTime="00:00:00.0" Value="{StaticResource FilledColor}"/>
<SplineColorKeyFrame KeyTime="00:00:01.6" Value="{StaticResource UnfilledColor}"/>
</ColorAnimationUsingKeyFrames>
</Storyboard>
<Storyboard x:Key="Animation3" BeginTime="00:00:00.6" RepeatBehavior="Forever">
<ColorAnimationUsingKeyFrames Storyboard.TargetName="ellipseSE" Storyboard.TargetProperty="(Shape.Fill).(SolidColorBrush.Color)">
<SplineColorKeyFrame KeyTime="00:00:00.0" Value="{StaticResource FilledColor}"/>
<SplineColorKeyFrame KeyTime="00:00:01.6" Value="{StaticResource UnfilledColor}"/>
</ColorAnimationUsingKeyFrames>
</Storyboard>
<Storyboard x:Key="Animation4" BeginTime="00:00:00.8" RepeatBehavior="Forever">
<ColorAnimationUsingKeyFrames Storyboard.TargetName="ellipseS" Storyboard.TargetProperty="(Shape.Fill).(SolidColorBrush.Color)">
<SplineColorKeyFrame KeyTime="00:00:00.0" Value="{StaticResource FilledColor}"/>
<SplineColorKeyFrame KeyTime="00:00:01.6" Value="{StaticResource UnfilledColor}"/>
</ColorAnimationUsingKeyFrames>
</Storyboard>
<Storyboard x:Key="Animation5" BeginTime="00:00:01.0" RepeatBehavior="Forever">
<ColorAnimationUsingKeyFrames Storyboard.TargetName="ellipseSW" Storyboard.TargetProperty="(Shape.Fill).(SolidColorBrush.Color)">
<SplineColorKeyFrame KeyTime="00:00:00.0" Value="{StaticResource FilledColor}"/>
<SplineColorKeyFrame KeyTime="00:00:01.6" Value="{StaticResource UnfilledColor}"/>
</ColorAnimationUsingKeyFrames>
</Storyboard>
<Storyboard x:Key="Animation6" BeginTime="00:00:01.2" RepeatBehavior="Forever">
<ColorAnimationUsingKeyFrames Storyboard.TargetName="ellipseW" Storyboard.TargetProperty="(Shape.Fill).(SolidColorBrush.Color)">
<SplineColorKeyFrame KeyTime="00:00:00.0" Value="{StaticResource FilledColor}"/>
<SplineColorKeyFrame KeyTime="00:00:01.6" Value="{StaticResource UnfilledColor}"/>
</ColorAnimationUsingKeyFrames>
</Storyboard>
<Storyboard x:Key="Animation7" BeginTime="00:00:01.4" RepeatBehavior="Forever">
<ColorAnimationUsingKeyFrames Storyboard.TargetName="ellipseNW" Storyboard.TargetProperty="(Shape.Fill).(SolidColorBrush.Color)">
<SplineColorKeyFrame KeyTime="00:00:00.0" Value="{StaticResource FilledColor}"/>
<SplineColorKeyFrame KeyTime="00:00:01.6" Value="{StaticResource UnfilledColor}"/>
</ColorAnimationUsingKeyFrames>
</Storyboard>
</ControlTemplate.Resources>
<ControlTemplate.Triggers>
<Trigger Property="IsVisible" Value="True">
<Trigger.EnterActions>
<BeginStoryboard Storyboard="{StaticResource Animation0}" x:Name="Storyboard0" />
<BeginStoryboard Storyboard="{StaticResource Animation1}" x:Name="Storyboard1"/>
<BeginStoryboard Storyboard="{StaticResource Animation2}" x:Name="Storyboard2"/>
<BeginStoryboard Storyboard="{StaticResource Animation3}" x:Name="Storyboard3"/>
<BeginStoryboard Storyboard="{StaticResource Animation4}" x:Name="Storyboard4"/>
<BeginStoryboard Storyboard="{StaticResource Animation5}" x:Name="Storyboard5"/>
<BeginStoryboard Storyboard="{StaticResource Animation6}" x:Name="Storyboard6"/>
<BeginStoryboard Storyboard="{StaticResource Animation7}" x:Name="Storyboard7"/>
</Trigger.EnterActions>
<Trigger.ExitActions>
<StopStoryboard BeginStoryboardName="Storyboard0"/>
<StopStoryboard BeginStoryboardName="Storyboard1"/>
<StopStoryboard BeginStoryboardName="Storyboard2"/>
<StopStoryboard BeginStoryboardName="Storyboard3"/>
<StopStoryboard BeginStoryboardName="Storyboard4"/>
<StopStoryboard BeginStoryboardName="Storyboard5"/>
<StopStoryboard BeginStoryboardName="Storyboard6"/>
<StopStoryboard BeginStoryboardName="Storyboard7"/>
</Trigger.ExitActions>
</Trigger>
</ControlTemplate.Triggers>
<Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}">
<Grid>
<Canvas>
<Canvas.Resources>
<Style TargetType="Ellipse">
<Setter Property="Width" Value="{Binding Path=EllipseSize}"/>
<Setter Property="Height" Value="{Binding Path=EllipseSize}" />
<Setter Property="Fill" Value="Transparent" />
</Style>
</Canvas.Resources>
<Ellipse x:Name="ellipseN" Canvas.Left="{Binding Path=EllipseN.Left}" Canvas.Top="{Binding Path=EllipseN.Top}"/>
<Ellipse x:Name="ellipseNE" Canvas.Left="{Binding Path=EllipseNE.Left}" Canvas.Top="{Binding Path=EllipseNE.Top}"/>
<Ellipse x:Name="ellipseE" Canvas.Left="{Binding Path=EllipseE.Left}" Canvas.Top="{Binding Path=EllipseE.Top}"/>
<Ellipse x:Name="ellipseSE" Canvas.Left="{Binding Path=EllipseSE.Left}" Canvas.Top="{Binding Path=EllipseSE.Top}"/>
<Ellipse x:Name="ellipseS" Canvas.Left="{Binding Path=EllipseS.Left}" Canvas.Top="{Binding Path=EllipseS.Top}"/>
<Ellipse x:Name="ellipseSW" Canvas.Left="{Binding Path=EllipseSW.Left}" Canvas.Top="{Binding Path=EllipseSW.Top}"/>
<Ellipse x:Name="ellipseW" Canvas.Left="{Binding Path=EllipseW.Left}" Canvas.Top="{Binding Path=EllipseW.Top}"/>
<Ellipse x:Name="ellipseNW" Canvas.Left="{Binding Path=EllipseNW.Left}" Canvas.Top="{Binding Path=EllipseNW.Top}"/>
</Canvas>
<Label Content="{Binding Path=Text}" HorizontalAlignment="Center" VerticalAlignment="Center"/>
</Grid>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</UserControl.Resources>
<Border>
<Control Style="{StaticResource BusyAnimationStyle}"/>
</Border>
</UserControl>
Code Behind (C#)
using System;
using System.Windows;
using System.Windows.Controls;
namespace WpfApplication2
{
/// <summary>
/// Interaction logic for Spinner.xaml
/// </summary>
public partial class Spinner : UserControl
{
public int EllipseSize { get; set; } = 8;
public int SpinnerHeight { get; set; } = 0;
public int SpinnerWidth { get; set; } = 0;
// start positions
public EllipseStartPosition EllipseN { get; private set; }
public EllipseStartPosition EllipseNE { get; private set; }
public EllipseStartPosition EllipseE { get; private set; }
public EllipseStartPosition EllipseSE { get; private set; }
public EllipseStartPosition EllipseS { get; private set; }
public EllipseStartPosition EllipseSW { get; private set; }
public EllipseStartPosition EllipseW { get; private set; }
public EllipseStartPosition EllipseNW { get; private set; }
public Spinner()
{
InitializeComponent();
}
private void initialSetup()
{
float horizontalCenter = (float)(SpinnerWidth / 2);
float verticalCenter = (float)(SpinnerHeight / 2);
float distance = (float)Math.Min(SpinnerHeight, SpinnerWidth) /2;
double angleInRadians = 44.8;
float cosine = (float)Math.Cos(angleInRadians);
float sine = (float)Math.Sin(angleInRadians);
EllipseN = newPos(left: horizontalCenter, top: verticalCenter - distance);
EllipseNE = newPos(left: horizontalCenter + (distance * cosine), top: verticalCenter - (distance * sine));
EllipseE = newPos(left: horizontalCenter + distance, top: verticalCenter);
EllipseSE = newPos(left: horizontalCenter + (distance * cosine), top: verticalCenter + (distance * sine));
EllipseS = newPos(left: horizontalCenter, top: verticalCenter + distance);
EllipseSW = newPos(left: horizontalCenter - (distance * cosine), top: verticalCenter + (distance * sine));
EllipseW = newPos(left: horizontalCenter - distance, top: verticalCenter);
EllipseNW = newPos(left: horizontalCenter - (distance * cosine), top: verticalCenter - (distance * sine));
}
private EllipseStartPosition newPos(float left, float top)
{
return new EllipseStartPosition() { Left = left, Top = top };
}
protected override void OnPropertyChanged(DependencyPropertyChangedEventArgs e)
{
if(e.Property.Name == "Height")
{
SpinnerHeight = Convert.ToInt32(e.NewValue);
}
if (e.Property.Name == "Width")
{
SpinnerWidth = Convert.ToInt32(e.NewValue);
}
if(SpinnerHeight > 0 && SpinnerWidth > 0)
{
initialSetup();
}
base.OnPropertyChanged(e);
}
}
public struct EllipseStartPosition
{
public float Left { get; set; }
public float Top { get; set; }
}
}
Sample Use
<Window x:Class="WpfApplication2.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:WpfApplication2"
xmlns:animated="WpfApplication2.MainWindow"
mc:Ignorable="d"
Title="MainWindow" Height="350" Width="525">
<StackPanel Background="DarkGoldenrod" Width="200" Height="200" VerticalAlignment="Top" HorizontalAlignment="Left" >
<Button Height="35">
<Button.Content >
<DockPanel LastChildFill="True" Height="NaN" Width="NaN" HorizontalAlignment="Left">
<local:Spinner EllipseSize="4" DockPanel.Dock="Left" HorizontalAlignment="Left" Margin="0,0,10,5" Height="16" Width="16"/>
<TextBlock Text="Cancel" VerticalAlignment="Center"/>
</DockPanel>
</Button.Content>
</Button>
</StackPanel>
</Window>
No, there is no way to only set the opacity of a border with css.
For example, if you did not know the color, there is no way to only change the opacity of the border by simply using rgba()
.
Use the system stored procedure sp_who2
.
BigInteger would only be used if you know it will not be a decimal and there is a possibility of the long data type not being large enough. BigInteger has no cap on its max size (as large as the RAM on the computer can hold).
From here.
It is implemented using an int[]
:
110 /**
111 * The magnitude of this BigInteger, in <i>big-endian</i> order: the
112 * zeroth element of this array is the most-significant int of the
113 * magnitude. The magnitude must be "minimal" in that the most-significant
114 * int ({@code mag[0]}) must be non-zero. This is necessary to
115 * ensure that there is exactly one representation for each BigInteger
116 * value. Note that this implies that the BigInteger zero has a
117 * zero-length mag array.
118 */
119 final int[] mag;
From the source
From the Wikipedia article Arbitrary-precision arithmetic:
Several modern programming languages have built-in support for bignums, and others have libraries available for arbitrary-precision integer and floating-point math. Rather than store values as a fixed number of binary bits related to the size of the processor register, these implementations typically use variable-length arrays of digits.
To put it nice and simply, get(int index)
returns the element at the specified index.
So say we had an ArrayList
of String
s:
List<String> names = new ArrayList<String>();
names.add("Arthur Dent");
names.add("Marvin");
names.add("Trillian");
names.add("Ford Prefect");
Which can be visualised as:
Where 0, 1, 2, and 3 denote the indexes of the ArrayList
.
Say we wanted to retrieve one of the names we would do the following:
String name = names.get(1);
Which returns the name at the index of 1.
So if we were to print out the name System.out.println(name);
the output would be Marvin
- Although he might not be too happy with us disturbing him.
If you look at the javadoc for the class SyndFeed
(I guess you are referring to the class com.sun.syndication.feed.synd.SyndFeed
), the method getEntries() doesn't return java.util.List<SyndEntry>
, but returns just java.util.List
.
So you need an explicit cast for this.
Leaving a reply (and an answer to the question title), For the future googlers...
You can use .length
to get the length of a string.
var x = 'Mozilla'; var empty = '';
console.log('Mozilla is ' + x.length + ' code units long');
/*"Mozilla is 7 code units long" */
console.log('The empty string has a length of ' + empty.length);
/*"The empty string has a length of 0" */
If you intend to get the length of a textarea
say id="txtarea"
then you can use the following code.
txtarea = document.getElementById('txtarea');
console.log(txtarea.value.length);
You should be able to get away with using this with BMP Unicode symbols. If you want to support "non BMP Symbols" like (), then its an edge case, and you need to find some work around.
This is a known issue with Swift 4.2 and Xcode 10. I found an article here that fixed it for me: https://github.com/Yummypets/YPImagePicker/issues/236
In short, go to your projects build settings, and add a user defined setting named SWIFT_ENABLE_BATCH_MODE and set its value to NO.
Previously, I tried each of the methods suggested here (rebuild, exit Xcode, clean and rebuild, purge Derived Data files). None of them worked.
Once I added the user define build setting per the article, Swift then told me the true error. In my case, it was a missing }, but it could be any number of problems.
It's much easier to do like this:
if(!$('#foo').hasClass('bar')) {
...
}
The ! in front of the criteria means false, works in most programming languages.
I modified Neutrino's solution to make the xaml look less verbose when specifying the value:
Sorry for no pictures of the rendered xaml, just imagine a [=] hamburger button that you click and it turns into [<-] a back button and also toggles the visibility of a Grid.
xmlns:i="clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity"
...
<Grid>
<Button x:Name="optionsButton">
<i:Interaction.Triggers>
<i:EventTrigger EventName="Click">
<local:SetterAction PropertyName="Visibility" Value="Collapsed" />
<local:SetterAction PropertyName="Visibility" TargetObject="{Binding ElementName=optionsBackButton}" Value="Visible" />
<local:SetterAction PropertyName="Visibility" TargetObject="{Binding ElementName=optionsPanel}" Value="Visible" />
</i:EventTrigger>
</i:Interaction.Triggers>
<glyphs:Hamburger Width="10" Height="10" />
</Button>
<Button x:Name="optionsBackButton" Visibility="Collapsed">
<i:Interaction.Triggers>
<i:EventTrigger EventName="Click">
<local:SetterAction PropertyName="Visibility" Value="Collapsed" />
<local:SetterAction PropertyName="Visibility" TargetObject="{Binding ElementName=optionsButton}" Value="Visible" />
<local:SetterAction PropertyName="Visibility" TargetObject="{Binding ElementName=optionsPanel}" Value="Collapsed" />
</i:EventTrigger>
</i:Interaction.Triggers>
<glyphs:Back Width="12" Height="11" />
</Button>
</Grid>
...
<Grid Grid.RowSpan="2" x:Name="optionsPanel" Visibility="Collapsed">
</Grid>
You can also specify values this way like in Neutrino's solution:
<Button x:Name="optionsButton">
<i:Interaction.Triggers>
<i:EventTrigger EventName="Click">
<local:SetterAction PropertyName="Visibility" Value="{x:Static Visibility.Collapsed}" />
<local:SetterAction PropertyName="Visibility" TargetObject="{Binding ElementName=optionsBackButton}" Value="{x:Static Visibility.Visible}" />
<local:SetterAction PropertyName="Visibility" TargetObject="{Binding ElementName=optionsPanel}" Value="{x:Static Visibility.Visible}" />
</i:EventTrigger>
</i:Interaction.Triggers>
<glyphs:Hamburger Width="10" Height="10" />
</Button>
And here's the code.
using System;
using System.ComponentModel;
using System.Reflection;
using System.Windows;
using System.Windows.Interactivity;
namespace Mvvm.Actions
{
/// <summary>
/// Sets a specified property to a value when invoked.
/// </summary>
public class SetterAction : TargetedTriggerAction<FrameworkElement>
{
#region Properties
#region PropertyName
/// <summary>
/// Property that is being set by this setter.
/// </summary>
public string PropertyName
{
get { return (string)GetValue(PropertyNameProperty); }
set { SetValue(PropertyNameProperty, value); }
}
public static readonly DependencyProperty PropertyNameProperty =
DependencyProperty.Register("PropertyName", typeof(string), typeof(SetterAction),
new PropertyMetadata(String.Empty));
#endregion
#region Value
/// <summary>
/// Property value that is being set by this setter.
/// </summary>
public object Value
{
get { return (object)GetValue(ValueProperty); }
set { SetValue(ValueProperty, value); }
}
public static readonly DependencyProperty ValueProperty =
DependencyProperty.Register("Value", typeof(object), typeof(SetterAction),
new PropertyMetadata(null));
#endregion
#endregion
#region Overrides
protected override void Invoke(object parameter)
{
var target = TargetObject ?? AssociatedObject;
var targetType = target.GetType();
var property = targetType.GetProperty(PropertyName, BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Static | BindingFlags.Instance);
if (property == null)
throw new ArgumentException(String.Format("Property not found: {0}", PropertyName));
if (property.CanWrite == false)
throw new ArgumentException(String.Format("Property is not settable: {0}", PropertyName));
object convertedValue;
if (Value == null)
convertedValue = null;
else
{
var valueType = Value.GetType();
var propertyType = property.PropertyType;
if (valueType == propertyType)
convertedValue = Value;
else
{
var propertyConverter = TypeDescriptor.GetConverter(propertyType);
if (propertyConverter.CanConvertFrom(valueType))
convertedValue = propertyConverter.ConvertFrom(Value);
else if (valueType.IsSubclassOf(propertyType))
convertedValue = Value;
else
throw new ArgumentException(String.Format("Cannot convert type '{0}' to '{1}'.", valueType, propertyType));
}
}
property.SetValue(target, convertedValue);
}
#endregion
}
}
Recently we had a similar problem and had to solve it in a different way. We had to merge two branches up to two commits, which were not the heads of either branches:
branch A: A1 -> A2 -> A3 -> A4
branch B: B1 -> B2 -> B3 -> B4
branch C: C1 -> A2 -> B3 -> C2
For example, we had to merge branch A up to A2 and branch B up to B3. But branch C had cherry-picks from A and B. When using the SHA of A2 and B3 it looked like there was confusion because of the local branch C which had the same SHA.
To avoid any kind of ambiguity we removed branch C locally, and then created a branch AA starting from commit A2:
git co A
git co SHA-of-A2
git co -b AA
Then we created a branch BB from commit B3:
git co B
git co SHA-of-B3
git co -b BB
At that point we merged the two branches AA and BB. By removing branch C and then referencing the branches instead of the commits it worked.
It's not clear to me how much of this was superstition or what actually made it work, but this "long approach" may be helpful.
You are trying to make a popup work maybe? I don't know how to emulate click, maybe you can try to fire click event somehow, but I don't know if it is possible. More than likely such functionality is not implemented, because of security and privacy concerns.
You can use div with position:absolute to emulate popup at the same page. If you insist creating another page, I cannot help you. Maybe somebody else with more experience will add his 15 cents.
Embed is not a standard tag, though object is. Here's an article that looks like it will help you, since it seems the situation is not so simple. An example for PDF is included.
There are two kinds of cascades in Doctrine:
1) ORM level - uses cascade={"remove"}
in the association - this is a calculation that is done in the UnitOfWork and does not affect the database structure. When you remove an object, the UnitOfWork will iterate over all objects in the association and remove them.
2) Database level - uses onDelete="CASCADE"
on the association's joinColumn - this will add On Delete Cascade to the foreign key column in the database:
@ORM\JoinColumn(name="father_id", referencedColumnName="id", onDelete="CASCADE")
I also want to point out that the way you have your cascade={"remove"} right now, if you delete a Child object, this cascade will remove the Parent object. Clearly not what you want.
Use your browser's network inspector (F12) to see when the browser is requesting the bgbody.png image and what absolute path it's using and why the server is returning a 404 response.
...assuming that bgbody.png actually exists :)
Is your CSS in a stylesheet file or in a <style>
block in a page? If it's in a stylesheet then the relative path must be relative to the CSS stylesheet (not the document that references it). If it's in a page then it must be relative to the current resource path. If you're using non-filesystem-based resource paths (i.e. using URL rewriting or URL routing) then this will cause problems and it's best to always use absolute paths.
Going by your relative path it looks like you store your images separately from your stylesheets. I don't think this is a good idea - I support storing images and other resources, like fonts, in the same directory as the stylesheet itself, as it simplifies paths and is also a more logical filesystem arrangement.
partial interface Navigator { readonly attribute boolean webdriver; };
The webdriver IDL attribute of the Navigator interface must return the value of the webdriver-active flag, which is initially false.
This property allows websites to determine that the user agent is under control by WebDriver, and can be used to help mitigate denial-of-service attacks.
Taken directly from the 2017 W3C Editor's Draft of WebDriver. This heavily implies that at the very least, future iterations of selenium's drivers will be identifiable to prevent misuse. Ultimately, it's hard to tell without the source code, what exactly causes chrome driver in specific to be detectable.
In my case, I needed to change the color of just one menu item - "Logout". I had to run a recursion and changed the title color:
NavigationView nvDrawer;
Menu menu = nvDrawer.getMenu();
for (int i = 0; i < menu.size(); i ++){
MenuItem menuItem = menu.getItem(i);
if (menuItem.getTitle().equals("Logout")){
SpannableString spanString = new SpannableString(menuItem.getTitle().toString());
spanString.setSpan(new ForegroundColorSpan(getResources().getColor(R.color.red)), 0, spanString.length(), 0);
menuItem.setTitle(spanString);
}
}
I did this in the Activity's onCreate method.
CREATE FUNCTION CombineValues
(
@FK_ID INT -- The foreign key from TableA which is used
-- to fetch corresponding records
)
RETURNS VARCHAR(8000)
AS
BEGIN
DECLARE @SomeColumnList VARCHAR(8000);
SELECT @SomeColumnList =
COALESCE(@SomeColumnList + ', ', '') + CAST(SomeColumn AS varchar(20))
FROM TableB C
WHERE C.FK_ID = @FK_ID;
RETURN
(
SELECT @SomeColumnList
)
END
SELECT ID, Name, dbo.CombineValues(FK_ID) FROM TableA
CREATE PROCEDURE GetCombinedValues
@FK_ID int
As
BEGIN
DECLARE @SomeColumnList VARCHAR(800)
SELECT @SomeColumnList =
COALESCE(@SomeColumnList + ', ', '') + CAST(SomeColumn AS varchar(20))
FROM TableB
WHERE FK_ID = @FK_ID
Select *, @SomeColumnList as SelectedIds
FROM
TableA
WHERE
FK_ID = @FK_ID
END
<fieldset>_x000D_
<legend> YOUR TITLE </legend>_x000D_
_x000D_
_x000D_
<p>_x000D_
Lorem ipsum dolor sit amet, est et illum reformidans, at lorem propriae mei. Qui legere commodo mediocritatem no. Diam consetetur._x000D_
</p>_x000D_
</fieldset>
_x000D_
Not sure, but I think I can use less memory and get dependable performance by doing it char-by-char. I was doing something similar, but in loops in background threads, so I am trying this for now. I've had some experience with String.split being more expensive then expected. And I am working on Android and expect GC hiccups to be more of an issue then cpu use.
public static String toCamelCase(String value) {
StringBuilder sb = new StringBuilder();
final char delimChar = '_';
boolean lower = false;
for (int charInd = 0; charInd < value.length(); ++charInd) {
final char valueChar = value.charAt(charInd);
if (valueChar == delimChar) {
lower = false;
} else if (lower) {
sb.append(Character.toLowerCase(valueChar));
} else {
sb.append(Character.toUpperCase(valueChar));
lower = true;
}
}
return sb.toString();
}
A hint that String.split is expensive is that its input is a regex (not a char like String.indexOf) and it returns an array (instead of say an iterator because the loop only uses one things at a time). Plus cases like "AB_AB_AB_AB_AB_AB..." break the efficiency of any bulk copy, and for long strings use an order of magnitude more memory then the input string.
Whereas looping through chars has no canonical case. So to me the overhead of an unneeded regex and array seems generally less preferable (then giving up possible bulk copy efficiency). Interested to hear opinions / corrections, thanks.
You want to read raw lines to avoid problems with backslashes in the input (use -r
):
while read -r line; do
printf "<%s>\n" "$line"
done < file.txt
This will keep whitespace within the line, but removes leading and trailing whitespace. To keep those as well, set the IFS empty, as in
while IFS= read -r line; do
printf "%s\n" "$line"
done < file.txt
This now is an equivalent of cat < file.txt
as long as file.txt
ends with a newline.
Note that you must double quote "$line"
in order to keep word splitting from splitting the line into separate words--thus losing multiple whitespace sequences.
clip-path
is now (2020) one of simplest ways to achieve box-shadows on specific sides of elements, especially when the required effect is a "clean cut" shadow at particular edges (which I believe was what the OP was originally looking for) , like this:
.shadow-element {_x000D_
border: 1px solid #333;_x000D_
width: 100px;_x000D_
height: 100px;_x000D_
box-shadow: 0 0 15px rgba(0,0,0,0.75);_x000D_
clip-path: inset(0px -15px 0px 0px);_x000D_
}
_x000D_
<div class="shadow-element"></div>
_x000D_
...as opposed to an attenuated/reduced/thinning shadow like this:
.shadow-element {_x000D_
border: 1px solid #333;_x000D_
width: 100px;_x000D_
height: 100px;_x000D_
box-shadow: 15px 0px 15px -10px rgba(0,0,0,0.75);_x000D_
}
_x000D_
<div class="shadow-element"></div>
_x000D_
Simply apply the following CSS to the element in question:
box-shadow: 0 0 Xpx [hex/rgba]; /* note 0 offset values */
clip-path: inset(Apx Bpx Cpx Dpx);
Where:
Apx
sets the shadow visibility for the top edgeBpx
rightCpx
bottomDpx
leftEnter a value of 0 for any edges where the shadow should be hidden and a negative value (the same as the box-shadow blur radius - Xpx
) to any edges where the shadow should be displayed.
Answering another for Simplicity & readability.
Also, editing existing predefined class members with new methods is not encouraged:
function getDateInYYYYMMDD() {
let currentDate = new Date();
// year
let yyyy = '' + currentDate.getFullYear();
// month
let mm = ('0' + (currentDate.getMonth() + 1)); // prepend 0 // +1 is because Jan is 0
mm = mm.substr(mm.length - 2); // take last 2 chars
// day
let dd = ('0' + currentDate.getDate()); // prepend 0
dd = dd.substr(dd.length - 2); // take last 2 chars
return yyyy + "" + mm + "" + dd;
}
var currentDateYYYYMMDD = getDateInYYYYMMDD();
console.log('currentDateYYYYMMDD: ' + currentDateYYYYMMDD);
According to my perspective,
O(1) means time to execute one operation or instruction at a time is one, in time complexity analysis of algorithm for best case.
You could use /etc/profile or better a file like /etc/profile.d/jdk_home.sh
export JAVA_HOME=/usr/java/jdk1.7.0_05/
You have to remember that this file is only loaded with new login shells.. So after bash -l or a new gnome-session and that it doesn't change with new Java versions.
Here is an example of using the loop:
echo off
cls
:begin
set /P M=Input text to encode md5, press ENTER to exit:
if %M%==%M1% goto end
echo.|set /p ="%M%" | openssl md5
set M1=%M%
Goto begin
This is the simple batch i use when i need to encrypt any message into md5 hash on Windows(openssl required), and the program would loyally repeat itself except given Ctrl+C or empty input.
A slightly simplified version of Oglester's solution (the sequence doesn't require a select from DUAL:
INSERT INTO account_type_standard
(account_type_Standard_id, tax_status_id, recipient_id)
VALUES(
account_type_standard_seq.nextval,
(SELECT tax_status_id FROM tax_status WHERE tax_status_code = ?),
(SELECT recipient_id FROM recipient WHERE recipient_code = ?)
)
This is because you have added a library and given its dependency on a module more than once.
In my case, I had added a library as a module and as a gradle dependency both.
Removing one source of adding library (I removed gradle dependency) solved my problem.
What I did to disable the hover state of the iframe, was to use pointer-events:none
in a css style. It shows the info on load, but after that hover shouldn't trigger showing the info.