<script>
$(document).ready(function () {
var msg = '@ViewBag.ErrorMessage'
if (msg.length > 0)
OnFailure('Register', msg);
});
function OnSuccess(header,Message) {
$("#Message_Header").text(header);
$("#Message_Text").text(Message);
$('#MessageDialog').modal('show');
}
function OnFailure(header,error)
{
$("#Message_Header").text(header);
$("#Message_Text").text(error);
$('#MessageDialog').modal('show');
}
</script>
The browser is still submitting the form after your code runs.
Add return false;
to the handler to prevent that.
you could use this
curl_setopt($curl->curl, CURLOPT_SSL_VERIFYPEER, false);
I was running in to the same issue, but have just managed a full uninstall by means of trusty old CMD:
D:\vs_ultimate.exe /uninstall /force
Where D: is the location of your installation media (mounted iso, etc).
You could also pass /passive (no user input required - just progress displayed) or /quiet to the above command line.
EDIT: Adding link below to MSDN article mentioning that this forcibly removes ALL installed components.
Also, to ensure link rot doesn't invalidate this, adding brief text below from original article.
Starting with Visual Studio 2013, you can forcibly remove almost all components. A few core components – like the .NET Framework and VC runtimes – are left behind because of their ubiquity, though you can remove those separately from Programs and Features if you really want.
Warning: This will remove all components regardless of whether other products require them. This may cause other products to function incorrectly or not function at all.
Good luck!
ps
command with -p $PID
can do this:
$ ps -p 3531
PID TTY TIME CMD
3531 ? 00:03:07 emacs
A combination of answers worked for me
<style>
input:-webkit-autofill,
input:-webkit-autofill:hover,
input:-webkit-autofill:focus,
input:-webkit-autofill:active {
-webkit-box-shadow: 0 0 0px 1000px #373e4a inset !important;
-webkit-text-fill-color: white !important;
}
</style>
I don't think the problem is the dependencies. I guess you are getting that error on your IDE. Then just refresh it. If it's eclipse, try running Maven->Update Dependencies
Not sure what isn't working in your case, but the following code will put a formula into cell A1 that will retrieve the value in the cell G2.
strProjectName = "Sheet1"
Cells(1, 1).Formula = "=" & strProjectName & "!" & Cells(2, 7).Address
The workbook and worksheet that strProjectName
references must exist at the time that this formula is placed. Excel will immediately try to evaluate the formula. You might be able to stop that from happening by turning off automatic recalculation until the workbook does exist.
according me, it is not possible
solution:
import .sql file on mysql server
after
import mysql.connector
import pandas as pd
and then you use .sql file by convert to dataframe
I'd simply say that it was hyphenated.
I like to define a mount
function, it tricks EsLint in the same way useMount
does and I find it more self-explanatory.
const mount = () => {
console.log('mounted')
// ...
const unmount = () => {
console.log('unmounted')
// ...
}
return unmount
}
useEffect(mount, [])
add on click open local directory o local file to google chrome:
The solution from JFish222 works ( URL file solution )
For Webkid Browsers like Chrome on Apache Servers just add to .htaccess o http.config this code:
SetEnvIf Request_URI ".url$" requested_url=url Header add Content-Disposition "attachment" env=requested_url
And by the first downlod of your url file click on the file in chromes downloadbar and select "always open this file".
Add this to an htaccess file (and see edit notes added below):
<IfModule mod_php5.c>
php_value post_max_size 200M
php_value upload_max_filesize 200M
php_value memory_limit 300M
php_value max_execution_time 259200
php_value max_input_time 259200
php_value session.gc_maxlifetime 1200
</IfModule>
Additional resources and information:
2021 EDIT:
As PHP and Apache evolve and grow, I think it is important for me to take a moment to mention a few things to consider and possible "gotchas" to consider:
<IfModule
is loaded.mod_php5.c
in the first line. If you are using PHP 7, you would replace that with mod_php7.c
.php.ini
config file(s). This method is usually only useful in the event your hosting provider does not give you access to change those files. In circumstances where you can edit the PHP configuration, it is recommended that you apply these settings there.The problem is not the TNS file, in PLSQL Developer, if you don't have the oracle installation, you need to provide the location of the OCI.DLL file.
In PLSQL DEV app go to Tools-Preferences-Oracle/connections-OCI Library.
In my case I put the next address C:\Oracle\InstantClient-win32-11.2.0.1.0\oci.dll
.
If have Weblogic app installed, I didnt tried but if you want try to put the next location
C:\Oracle\Middleware\wlserver_10.3\server\adr
.
First, you need to set up HttpClient in your Angular project.
Open the src/app/app.module.ts file, import HttpClientModule and add it to the imports array of the module as follows:
import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { AppRoutingModule } from './app-routing.module';
import { AppComponent } from './app.component';
import { HttpClientModule } from '@angular/common/http';
@NgModule({
declarations: [
AppComponent,
],
imports: [
BrowserModule,
AppRoutingModule,
HttpClientModule
],
providers: [],
bootstrap: [AppComponent]
})
export class AppModule { }
Next, generate a component:
$ ng generate component home
Next, generate an upload service:
$ ng generate service upload
Next, open the src/app/upload.service.ts file as follows:
import { HttpClient, HttpEvent, HttpErrorResponse, HttpEventType } from '@angular/common/http';
import { map } from 'rxjs/operators';
@Injectable({
providedIn: 'root'
})
export class UploadService {
SERVER_URL: string = "https://file.io/";
constructor(private httpClient: HttpClient) { }
public upload(formData) {
return this.httpClient.post<any>(this.SERVER_URL, formData, {
reportProgress: true,
observe: 'events'
});
}
}
Next, open the src/app/home/home.component.ts file, and start by adding the following imports:
import { Component, OnInit, ViewChild, ElementRef } from '@angular/core';
import { HttpEventType, HttpErrorResponse } from '@angular/common/http';
import { of } from 'rxjs';
import { catchError, map } from 'rxjs/operators';
import { UploadService } from '../upload.service';
Next, define the fileUpload and files variables and inject UploadService as follows:
@Component({
selector: 'app-home',
templateUrl: './home.component.html',
styleUrls: ['./home.component.css']
})
export class HomeComponent implements OnInit {
@ViewChild("fileUpload", {static: false}) fileUpload: ElementRef;files = [];
constructor(private uploadService: UploadService) { }
Next, define the uploadFile() method:
uploadFile(file) {
const formData = new FormData();
formData.append('file', file.data);
file.inProgress = true;
this.uploadService.upload(formData).pipe(
map(event => {
switch (event.type) {
case HttpEventType.UploadProgress:
file.progress = Math.round(event.loaded * 100 / event.total);
break;
case HttpEventType.Response:
return event;
}
}),
catchError((error: HttpErrorResponse) => {
file.inProgress = false;
return of(`${file.data.name} upload failed.`);
})).subscribe((event: any) => {
if (typeof (event) === 'object') {
console.log(event.body);
}
});
}
Next, define the uploadFiles() method which can be used to upload multiple image files:
private uploadFiles() {
this.fileUpload.nativeElement.value = '';
this.files.forEach(file => {
this.uploadFile(file);
});
}
Next, define the onClick() method:
onClick() {
const fileUpload = this.fileUpload.nativeElement;fileUpload.onchange = () => {
for (let index = 0; index < fileUpload.files.length; index++)
{
const file = fileUpload.files[index];
this.files.push({ data: file, inProgress: false, progress: 0});
}
this.uploadFiles();
};
fileUpload.click();
}
Next, we need to create the HTML template of our image upload UI. Open the src/app/home/home.component.html file and add the following content:
<div [ngStyle]="{'text-align':center; 'margin-top': 100px;}">
<button mat-button color="primary" (click)="fileUpload.click()">choose file</button>
<button mat-button color="warn" (click)="onClick()">Upload</button>
<input [hidden]="true" type="file" #fileUpload id="fileUpload" name="fileUpload" multiple="multiple" accept="image/*" />
</div>
This example assumes you want to post a form back via serialize
and not serializeArray
, and that an unchecked checkbox means false
:
var form = $(formSelector);
var postData = form.serialize();
var checkBoxData = form.find('input[type=checkbox]:not(:checked)').map(function () {
return encodeURIComponent(this.name) + '=' + false;
}).get().join('&');
if (checkBoxData) {
postData += "&" + checkBoxData;
}
$.post(action, postData);
PostgreSQL supports regular expressions matching.
So, your example would look like
SELECT * FROM books WHERE title ~ '^\d+ ?'
This will match a title starting with one or more digits and an optional space
I've written following code which cleans object from proxies (if they are not already initialized)
public class PersistenceUtils {
private static void cleanFromProxies(Object value, List<Object> handledObjects) {
if ((value != null) && (!isProxy(value)) && !containsTotallyEqual(handledObjects, value)) {
handledObjects.add(value);
if (value instanceof Iterable) {
for (Object item : (Iterable<?>) value) {
cleanFromProxies(item, handledObjects);
}
} else if (value.getClass().isArray()) {
for (Object item : (Object[]) value) {
cleanFromProxies(item, handledObjects);
}
}
BeanInfo beanInfo = null;
try {
beanInfo = Introspector.getBeanInfo(value.getClass());
} catch (IntrospectionException e) {
// LOGGER.warn(e.getMessage(), e);
}
if (beanInfo != null) {
for (PropertyDescriptor property : beanInfo.getPropertyDescriptors()) {
try {
if ((property.getWriteMethod() != null) && (property.getReadMethod() != null)) {
Object fieldValue = property.getReadMethod().invoke(value);
if (isProxy(fieldValue)) {
fieldValue = unproxyObject(fieldValue);
property.getWriteMethod().invoke(value, fieldValue);
}
cleanFromProxies(fieldValue, handledObjects);
}
} catch (Exception e) {
// LOGGER.warn(e.getMessage(), e);
}
}
}
}
}
public static <T> T cleanFromProxies(T value) {
T result = unproxyObject(value);
cleanFromProxies(result, new ArrayList<Object>());
return result;
}
private static boolean containsTotallyEqual(Collection<?> collection, Object value) {
if (CollectionUtils.isEmpty(collection)) {
return false;
}
for (Object object : collection) {
if (object == value) {
return true;
}
}
return false;
}
public static boolean isProxy(Object value) {
if (value == null) {
return false;
}
if ((value instanceof HibernateProxy) || (value instanceof PersistentCollection)) {
return true;
}
return false;
}
private static Object unproxyHibernateProxy(HibernateProxy hibernateProxy) {
Object result = hibernateProxy.writeReplace();
if (!(result instanceof SerializableProxy)) {
return result;
}
return null;
}
@SuppressWarnings("unchecked")
private static <T> T unproxyObject(T object) {
if (isProxy(object)) {
if (object instanceof PersistentCollection) {
PersistentCollection persistentCollection = (PersistentCollection) object;
return (T) unproxyPersistentCollection(persistentCollection);
} else if (object instanceof HibernateProxy) {
HibernateProxy hibernateProxy = (HibernateProxy) object;
return (T) unproxyHibernateProxy(hibernateProxy);
} else {
return null;
}
}
return object;
}
private static Object unproxyPersistentCollection(PersistentCollection persistentCollection) {
if (persistentCollection instanceof PersistentSet) {
return unproxyPersistentSet((Map<?, ?>) persistentCollection.getStoredSnapshot());
}
return persistentCollection.getStoredSnapshot();
}
private static <T> Set<T> unproxyPersistentSet(Map<T, ?> persistenceSet) {
return new LinkedHashSet<T>(persistenceSet.keySet());
}
}
I use this function over result of my RPC services (via aspects) and it cleans recursively all result objects from proxies (if they are not initialized).
Use the following things on your webview
webview.setWebChromeClient(new WebChromeClient());
then implement the required methods for WebChromeClient class.
Inspired by @jirikuchta 's answer, I solved this problem by adding this bit of CSS:
#myTextArea:active {
font-size: 16px; /* `16px` is safer I assume, although `1rem` works too */
}
No JS, and I don't notice any flash or anything.
It's worth noting that a viewport
with maximum-scale=1
also works, but not when the page is loaded as an iframe, or if you have some other script modifying the viewport
, etc.
This error can also occur if you accidentally miss if
function name.
for example:
set v_filter_value = 100;
select
f_id,
f_sale_value
from
t_seller
where
f_id = 5
and (v_filter_value <> 0, f_sale_value = v_filter_value, true);
Got this problem when I missed putting if in the if
function!
Take a look at ?legend
and try this:
legend('topright', names(a)[-1] ,
lty=1, col=c('red', 'blue', 'green',' brown'), bty='n', cex=.75)
I had a requirement to provide a report showing details by month where the date field was formatted as date & time, I simply changed the formatting of the date column to "General" and then used the following formula in a new column,
=CONCATENATE(YEAR(C2),MONTH(C2))
Try this:
select * from all_constraints where r_constraint_name in (select constraint_name
from all_constraints where table_name='YOUR_TABLE_NAME');
A little plus:
version = RN 0.57.7
secureTextEntry={true}
does not work when the keyboardType
was "phone-pad"
or "email-address"
try this:
select convert (date ,getdate())
or
select CAST (getdate() as DATE)
or
select convert(varchar(10), getdate(),121)
eof() checks the eofbit in the stream state.
On each read operation, if the position is at the end of stream and more data has to be read, eofbit is set to true. Therefore you're going to get an extra character before you get eofbit=1.
The correct way is to check whether the eof was reached (or, whether the read operation succeeded) after the reading operation. This is what your second version does - you do a read operation, and then use the resulting stream object reference (which >> returns) as a boolean value, which results in check for fail().
I will show visually the problem, using the great example from James answer and adding the alternative solution.
When you do the follow query, without the FETCH
:
Select e from Employee e
join e.phones p
where p.areaCode = '613'
You will have the follow results from Employee
as you expected:
EmployeeId | EmployeeName | PhoneId | PhoneAreaCode |
---|---|---|---|
1 | James | 5 | 613 |
1 | James | 6 | 416 |
But when you add the FETCH
word on JOIN
, this is what happens:
EmployeeId | EmployeeName | PhoneId | PhoneAreaCode |
---|---|---|---|
1 | James | 5 | 613 |
The generated SQL is the same for the two queries, but the Hibernate removes on memory the 416
register when you use WHERE
on the FETCH
join.
So, to bring all phones and apply the WHERE
correctly, you need to have two JOIN
s: one for the WHERE
and another for the FETCH
. Like:
Select e from Employee e
join e.phones p
join fetch e.phones //no alias, to not commit the mistake
where p.areaCode = '613'
You're getting errors 'table liam does not exist' because the table's name is Liam
which is not the same as liam
. MySQL table names are case sensitive.
try
raw_input('Enter your input:') # If you use Python 2
input('Enter your input:') # If you use Python 3
and if you want to have a numeric value just convert it:
try:
mode=int(raw_input('Input:'))
except ValueError:
print "Not a number"
chandan@cmaster:~/More$ javac New.java
chandan@cmaster:~/More$ javac New
error: Class names, 'New', are only accepted if annotation processing is explicitly requested
1 error
So if you by mistake after compiling again use javac
for running a program.
Assuming you cannot modify DDL (to create a unique constraint) or are limited to only being able to write DML then check for a null on filtered result of your values against the whole table
insert into funds (ID, date, price)
select
T.*
from
(select 23 ID, '2013-02-12' date, 22.43 price) T
left join
funds on funds.ID = T.ID and funds.date = T.date
where
funds.ID is null
Go to Nuget package manager and download Nunit Adapter as follow.
Try redirecting the output to Out-Null. Like so,
$key = & 'gpg' --decrypt "secret.gpg" --quiet --no-verbose | out-null
I had this problem on a development machine. The dev
branch was pushing fine but the
the master
branch gave me (while git push
ing when being on the dev
branch):
! [rejected] master -> master (non-fast-forward)
So I tried:
git checkout master
git pull
Which gave me:
You asked me to pull without telling me which branch you
want to merge with, and 'branch.master.merge' in
your configuration file does not tell me, either.
I found out the master branch was missing from .git/config
and added:
[branch "master"]
remote = origin
merge = refs/heads/master
Afterwards git push
also worked fine on the dev
branch.
In order to use import { readFileSync } from 'fs'
, you have to:
--experimental-modules
flag (in Node.js 10), e.g. node --experimental-modules server.mjs
(see #3 for explanation of .mjs)import
statements, to .mjs
, .js will not work, e.g. server.mjsThe other answers hit on 1 and 2, but 3 is also necessary. Also, note that this feature is considered extremely experimental at this point (1/10 stability) and not recommended for production, but I will still probably use it.
Here's the Node.js 10 ESM documentation.
Here is a smart and fast way to do it for numbers up to and around 10**16 in pure Python 3.6,
from itertools import compress
def primes(n):
""" Returns a list of primes < n for n > 2 """
sieve = bytearray([True]) * (n//2)
for i in range(3,int(n**0.5)+1,2):
if sieve[i//2]:
sieve[i*i//2::i] = bytearray((n-i*i-1)//(2*i)+1)
return [2,*compress(range(3,n,2), sieve[1:])]
def factorization(n):
""" Returns a list of the prime factorization of n """
pf = []
for p in primeslist:
if p*p > n : break
count = 0
while not n % p:
n //= p
count += 1
if count > 0: pf.append((p, count))
if n > 1: pf.append((n, 1))
return pf
def divisors(n):
""" Returns an unsorted list of the divisors of n """
divs = [1]
for p, e in factorization(n):
divs += [x*p**k for k in range(1,e+1) for x in divs]
return divs
n = 600851475143
primeslist = primes(int(n**0.5)+1)
print(divisors(n))
Toastr is a very nice component, and you can show messages with theses commands:
// for success - green box
toastr.success('Success messages');
// for errors - red box
toastr.error('errors messages');
// for warning - orange box
toastr.warning('warning messages');
// for info - blue box
toastr.info('info messages');
If you want to provide a title on the toastr message, just add a second argument:
// for info - blue box
toastr.success('The process has been saved.', 'Success');
you also can change the default behaviour using something like this:
toastr.options.timeOut = 3000; // 3s
See more on the github of the project.
A sample of use:
$(document).ready(function() {
// show when page load
toastr.info('Page Loaded!');
$('#linkButton').click(function() {
// show when the button is clicked
toastr.success('Click Button');
});
});
and a html:
<a id='linkButton'>Show Message</a>
I've tried a few solutions here and didn't find the one that writes into file and into console at the same time. So here is what I did (based on this answer)
class Logger(object):
def __init__(self):
self.terminal = sys.stdout
def write(self, message):
with open ("logfile.log", "a", encoding = 'utf-8') as self.log:
self.log.write(message)
self.terminal.write(message)
def flush(self):
#this flush method is needed for python 3 compatibility.
#this handles the flush command by doing nothing.
#you might want to specify some extra behavior here.
pass
sys.stdout = Logger()
This solution uses more computing power, but reliably saves all of the data from stdout into logger file and uses less memeory. For my needs I've added time stamp into self.log.write(message) aswell. Works great.
It looks like it is an extension method (in System.Net.Http.Formatting):
Update:
PM> install-package Microsoft.AspNet.WebApi.Client
According to the System.Net.Http.Formatting NuGet package page, the System.Net.Http.Formatting
package is now legacy and can instead be found in the Microsoft.AspNet.WebApi.Client
package available on NuGet here.
I wish double quotes were the standard, because they make a little bit more sense, but I keep using single quotes because they dominate the scene.
Single quotes:
No preference:
Double quotes:
.eslintrc
)There is actually a way to test methods from a private member with Mockito. Let's say you have a class like this:
public class A {
private SomeOtherClass someOtherClass;
A() {
someOtherClass = new SomeOtherClass();
}
public void method(boolean b){
if (b == true)
someOtherClass.method1();
else
someOtherClass.method2();
}
}
public class SomeOtherClass {
public void method1() {}
public void method2() {}
}
If you want to test a.method
will invoke a method from SomeOtherClass
, you can write something like below.
@Test
public void testPrivateMemberMethodCalled() {
A a = new A();
SomeOtherClass someOtherClass = Mockito.spy(new SomeOtherClass());
ReflectionTestUtils.setField( a, "someOtherClass", someOtherClass);
a.method( true );
Mockito.verify( someOtherClass, Mockito.times( 1 ) ).method1();
}
ReflectionTestUtils.setField();
will stub the private member with something you can spy on.
You can use
$('#myModal').hasClass('in');
Bootstrap adds the in
class when the modal is open and removes it when closed
If you add height in .wrapper
class then your scroll is working, without height
scroll is not working.
Try this http://jsfiddle.net/ZcrFr/3/
CSS:
.wrapper {
position: relative;
overflow: scroll;
width: 1000px;
height: 800px;
}
Quote from xlsxwriter
module documentation:
This module cannot be used to modify or write to an existing Excel XLSX file.
If you want to modify existing xlsx
workbook, consider using openpyxl module.
See also:
Use a static Random or the numbers tend to repeat in tight/fast loops due to the system clock seeding them.
public static class RandomNumbers
{
private static Random random = new Random();
//=-------------------------------------------------------------------
// double between min and the max number
public static double RandomDouble(int min, int max)
{
return (random.NextDouble() * (max - min)) + min;
}
//=----------------------------------
// double between 0 and the max number
public static double RandomDouble(int max)
{
return (random.NextDouble() * max);
}
//=-------------------------------------------------------------------
// int between the min and the max number
public static int RandomInt(int min, int max)
{
return random.Next(min, max + 1);
}
//=----------------------------------
// int between 0 and the max number
public static int RandomInt(int max)
{
return random.Next(max + 1);
}
//=-------------------------------------------------------------------
}
See also : https://docs.microsoft.com/en-us/dotnet/api/system.random?view=netframework-4.8
Percent encoding. Replace the hash with %23
.
You can set RequestParam, using generic class Integer instead of int, it will resolve your issue.
@RequestParam(value= "i", defaultValue = "20") Integer i
since you followed the tutorial, I presume you have a screen that says Hello World.
that means you have some code in your layout xml that looks like this
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/hello_world" />
you want to display an image, so instead of TextView you want to have ImageView. and instead of a text attribute you want an src attribute, that links to your drawable resource
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/cool_pic"
/>
The solution of prijin worked perfectly for me. It is just fair to mention that two additional permissions are needed:
<uses-permission android:name="android.permission.BLUETOOTH"/>
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>
When these are added, enabling and disabling works flawless with the default bluetooth adapter.
What is the difference between
<init-param>
and<context-param>
!?
Single servlet versus multiple servlets.
Other Answers give details, but here is the summary:
A web app, that is, a “context”, is made up of one or more servlets.
<init-param>
defines a value available to a single specific servlet within a context.<context-param>
defines a value available to all the servlets within a context.If you use CDATA, you could embed the line breaks directly into the XML I think. Example:
<song>
<title>Song Title</title>
<lyric><![CDATA[Line 1
Line 2
Line 3]]></lyric>
</song>
Maybe what you want is just plain old predefined variables.
Consider trying
$_SERVER['REQUEST_URI'']
Or read more here.
You could use a List<T>
and when T
is a value type it will be allocated in contiguous memory which would not be the case if T
is a reference type.
Example:
List<int> integers = new List<int>();
integers.Add(1);
integers.Add(4);
integers.Add(7);
int someElement = integers[1];
Another simple solution for dynamic textarea control.
<!--JAVASCRIPT-->
<script type="text/javascript">
$('textarea').on('input', function () {
this.style.height = "";
this.style.height = this.scrollHeight + "px";
});
</script>
_x000D_
Just ask assistance of JavaScript.
<select onchange="this.form.submit()">
...
</select>
subprocess.check_output(...)
calls the process, raises if its error code is nonzero, and otherwise returns its stdout. It's just a quick shorthand so you don't have to worry about PIPE
s and things.
Related to Server 2016, I should add:
Run this command: aspnet_regiis -lv
from this dir:
C:\Windows\Microsoft.NET\Framework\v2.0.50727\
This gives you the
best view of what is going on
On Server 2016, installing .net and iis out of sequence does not seem to be a problem.
What is more likely to be a problem on Server 2016 is simply that asp.net is not installed on the machine.
I would do it with cssSelector:
// for all checked checkboxes
driver.findElements(By.cssSelector("input:checked[type='checkbox']"));
// for all notchecked checkboxes
driver.findElements(By.cssSelector("input:not(:checked)[type='checkbox']"));
Maybe that also helps ;-)
First of, please think long and hard if you really want to disable the Home
button or any other button for that matter (e.g. the Back
button), this is not something that should be done (at least most of the times, this is a bad design). I can speak only for myself, but if I downloaded an app that doesn't let me do something like clicking an OS button, the next thing I do is uninstall that app and leave a very bad review. I also believe that your app will not be featured on the App Store.
Now...
Notice that MX Player
is asking permission to draw on top of other applications:
Since you cannot override the Home
button on Android
device (at least no in the latest OS versions). MX Player
draws itself on top of your launcher when you "lock" the app and clicks on the Home
button.
To see an example of that is a bit more simple and straight forward to understand, you can see the Facebook Messenger App.
As I was asked to provide some more info about MX Player Status Bar
and Navigation Bar
"overriding", I'm editing my answer to include these topics too.
First thing first, MX Player is using Immersive Full-Screen Mode (DevBytes Video) on KitKat
.
Android 4.4 (API Level 19) introduces a new SYSTEM_UI_FLAG_IMMERSIVE flag for setSystemUiVisibility() that lets your app go truly "full screen." This flag, when combined with the SYSTEM_UI_FLAG_HIDE_NAVIGATION and SYSTEM_UI_FLAG_FULLSCREEN flags, hides the navigation and status bars and lets your app capture all touch events on the screen.
When immersive full-screen mode is enabled, your activity continues to receive all touch events. The user can reveal the system bars with an inward swipe along the region where the system bars normally appear. This clears the SYSTEM_UI_FLAG_HIDE_NAVIGATION flag (and the SYSTEM_UI_FLAG_FULLSCREEN flag, if applied) so the system bars become visible. This also triggers your View.OnSystemUiVisibilityChangeListener, if set. However, if you'd like the system bars to automatically hide again after a few moments, you can instead use the SYSTEM_UI_FLAG_IMMERSIVE_STICKY flag. Note that the "sticky" version of the flag doesn't trigger any listeners, as system bars temporarily shown in this mode are in a transient state.
Second: Hiding the Status Bar
Third: Hiding the Navigation Bar
Please note that although using immersive full screen is only for KitKat
, hiding the Status Bar
and Navigation Bar
is not only for KitKat
.
I don't have much to say about the 2nd and 3rd, You get the idea I believe, it's a fast read in any case. Just make sure you pay close attention to View.OnSystemUiVisibilityChangeListener.
I added a Gist that explains what I meant, it's not complete and needs some fixing but you'll get the idea. https://gist.github.com/Epsiloni/8303531
Good luck implementing this, and have fun!
It is nice to verify that the code you pushed actually got committed.
You can get a log of changes on a bare repository by explicitly setting the path using the --relative option.
$ cd test_repo
$ git log --relative=/
This will show you the committed changes as if this was a regular git repo.
Setting windowLightStatusBar
to true
not works with Mi phones, some Meizu phones, Blackview phones, WileyFox etc.
I've found such hack for Mi and Meizu devices. This is not a comprehensive solution of this perfomance problem, but maybe it would be useful to somebody.
And I think, it would be better to tell your customer that coloring status bar (for example) white - is not a good idea. instead of using different hacks it would be better to define appropriate colorPrimaryDark
according to the guidelines
updated() should be what you're looking for:
Called after a data change causes the virtual DOM to be re-rendered and patched.
The component’s DOM will have been updated when this hook is called, so you can perform DOM-dependent operations here.
Use Number
from the numbers
module to test isinstance(n, Number)
(available since 2.6).
isinstance(n, numbers.Number)
Here it is in action with various kinds of numbers and one non-number:
>>> from numbers import Number
... from decimal import Decimal
... from fractions import Fraction
... for n in [2, 2.0, Decimal('2.0'), complex(2,0), Fraction(2,1), '2']:
... print '%15s %s' % (n.__repr__(), isinstance(n, Number))
2 True
2.0 True
Decimal('2.0') True
(2+0j) True
Fraction(2, 1) True
'2' False
This is, of course, contrary to duck typing. If you are more concerned about how an object acts rather than what it is, perform your operations as if you have a number and use exceptions to tell you otherwise.
(Edited) Rounding integers with floating point is the easiest solution to this problem; however, depending on the problem set is may be possible. For example, in embedded systems the floating point solution may be too costly.
Doing this using integer math turns out to be kind of hard and a little unintuitive. The first posted solution worked okay for the the problem I had used it for but after characterizing the results over the range of integers it turned out to be very bad in general. Looking through several books on bit twiddling and embedded math return few results. A couple of notes. First, I only tested for positive integers, my work does not involve negative numerators or denominators. Second, and exhaustive test of 32 bit integers is computational prohibitive so I started with 8 bit integers and then mades sure that I got similar results with 16 bit integers.
I started with the 2 solutions that I had previously proposed:
#define DIVIDE_WITH_ROUND(N, D) (((N) == 0) ? 0:(((N * 10)/D) + 5)/10)
#define DIVIDE_WITH_ROUND(N, D) (N == 0) ? 0:(N - D/2)/D + 1;
My thought was that the first version would overflow with big numbers and the second underflow with small numbers. I did not take 2 things into consideration. 1.) the 2nd problem is actually recursive since to get the correct answer you have to properly round D/2. 2.) In the first case you often overflow and then underflow, the two canceling each other out. Here is an error plot of the two (incorrect) algorithms:
This plot shows that the first algorithm is only incorrect for small denominators (0 < d < 10). Unexpectedly it actually handles large numerators better than the 2nd version.
Here is a plot of the 2nd algorithm:
As expected it fails for small numerators but also fails for more large numerators than the 1st version.
Clearly this is the better starting point for a correct version:
#define DIVIDE_WITH_ROUND(N, D) (((N) == 0) ? 0:(((N * 10)/D) + 5)/10)
If your denominators is > 10 then this will work correctly.
A special case is needed for D == 1, simply return N. A special case is needed for D== 2, = N/2 + (N & 1) // Round up if odd.
D >= 3 also has problems once N gets big enough. It turns out that larger denominators only have problems with larger numerators. For 8 bit signed number the problem points are
if (D == 3) && (N > 75))
else if ((D == 4) && (N > 100))
else if ((D == 5) && (N > 125))
else if ((D == 6) && (N > 150))
else if ((D == 7) && (N > 175))
else if ((D == 8) && (N > 200))
else if ((D == 9) && (N > 225))
else if ((D == 10) && (N > 250))
(return D/N for these)
So in general the the pointe where a particular numerator gets bad is somewhere around
N > (MAX_INT - 5) * D/10
This is not exact but close. When working with 16 bit or bigger numbers the error < 1% if you just do a C divide (truncation) for these cases.
For 16 bit signed numbers the tests would be
if ((D == 3) && (N >= 9829))
else if ((D == 4) && (N >= 13106))
else if ((D == 5) && (N >= 16382))
else if ((D == 6) && (N >= 19658))
else if ((D == 7) && (N >= 22935))
else if ((D == 8) && (N >= 26211))
else if ((D == 9) && (N >= 29487))
else if ((D == 10) && (N >= 32763))
Of course for unsigned integers MAX_INT would be replaced with MAX_UINT. I am sure there is an exact formula for determining the largest N that will work for a particular D and number of bits but I don't have any more time to work on this problem...
(I seem to be missing this graph at the moment, I will edit and add later.)
This is a graph of the 8 bit version with the special cases noted above:![8 bit signed with special cases for 0 < N <= 10
3
Note that for 8 bit the error is 10% or less for all errors in the graph, 16 bit is < 0.1%.
To get a list of all childs of a specific type you can use:
private static IEnumerable<DependencyObject> FindInVisualTreeDown(DependencyObject obj, Type type)
{
if (obj != null)
{
if (obj.GetType() == type)
{
yield return obj;
}
for (var i = 0; i < VisualTreeHelper.GetChildrenCount(obj); i++)
{
foreach (var child in FindInVisualTreeDown(VisualTreeHelper.GetChild(obj, i), type))
{
if (child != null)
{
yield return child;
}
}
}
}
yield break;
}
requests
does not handle parsing XML responses, no. XML responses are much more complex in nature than JSON responses, how you'd serialize XML data into Python structures is not nearly as straightforward.
Python comes with built-in XML parsers. I recommend you use the ElementTree API:
import requests
from xml.etree import ElementTree
response = requests.get(url)
tree = ElementTree.fromstring(response.content)
or, if the response is particularly large, use an incremental approach:
response = requests.get(url, stream=True)
# if the server sent a Gzip or Deflate compressed response, decompress
# as we read the raw stream:
response.raw.decode_content = True
events = ElementTree.iterparse(response.raw)
for event, elem in events:
# do something with `elem`
The external lxml project builds on the same API to give you more features and power still.
You cannot add AM / PM to a TimeSpan
. You'll anyway have to associate the TimaSpan
value with DateTime
if you want to display the time in 12-hour clock format.
TimeSpan
is not intended to use with a 12-hour clock format, because we are talking about a time interval here.
As it says in the documentation;
A
TimeSpan
object represents a time interval (duration of time or elapsed time) that is measured as a positive or negative number of days, hours, minutes, seconds, and fractions of a second. TheTimeSpan
structure can also be used to represent the time of day, but only if the time is unrelated to a particular date. Otherwise, theDateTime
orDateTimeOffset
structure should be used instead.
Also Microsoft Docs describes as follows;
A
TimeSpan
value can be represented as[-]d.hh:mm:ss.ff
, where the optional minus sign indicates a negative time interval, thed
component is days,hh
is hours as measured on a 24-hour clock,mm
is minutes,ss
is seconds, andff
is fractions of a second.
So in this case, you can display using AM/PM as follows.
TimeSpan storedTime = new TimeSpan(03,00,00);
string displayValue = new DateTime().Add(storedTime).ToString("hh:mm tt");
Side note :
Also should note that the TimeOfDay property of DateTime
is a TimeSpan
, where it represents
a time interval that represents the fraction of the day that has elapsed since midnight.
Set also android:gravity
parameter in TextView
to center
.
For testing the effects of different layout parameters I recommend to use different background color for every element, so you can see how your layout changes with parameters like gravity, layout_gravity or others.
I do so
<input id="relacionac" name="relacionac" type="number" min="0.4" max="0.7" placeholder="0,40-0,70" class="form-control input-md" step="0.01">
then, I define min in 0.4 and max in 0.7 with step 0.01: 0.4, 0.41, 0,42 ... 0.7
There is big difference between dot (".")
and text()
:-
The dot (".")
in XPath
is called the "context item expression" because it refers to the context item. This could be match with a node (such as an element
, attribute
, or text node
) or an atomic value (such as a string
, number
, or boolean
). While text()
refers to match only element text
which is in string
form.
The dot (".")
notation is the current node in the DOM. This is going to be an object of type Node while Using the XPath
function text() to get the text for an element only gets the text up to the first inner element. If the text you are looking for is after the inner element you must use the current node to search for the string and not the XPath
text() function.
For an example :-
<a href="something.html">
<img src="filename.gif">
link
</a>
Here if you want to find anchor a
element by using text link, you need to use dot (".")
. Because if you use //a[contains(.,'link')]
it finds the anchor a
element but if you use //a[contains(text(),'link')]
the text()
function does not seem to find it.
Hope it will help you..:)
Assuming you also can't use s.union(t)
, which is equivalent to s | t
, you could try
>>> from itertools import chain
>>> set(chain(s,t))
set([1, 2, 3, 4, 5, 6])
Or, if you want a comprehension,
>>> {i for j in (s,t) for i in j}
set([1, 2, 3, 4, 5, 6])
According to:
Fixing Node Mysql "Error: Cannot enqueue Handshake after invoking quit.":
http://codetheory.in/fixing-node-mysql-error-cannot-enqueue-handshake-after-invoking-quit/
TL;DR You need to establish a new connection by calling the
createConnection
method after every disconnection.
and
Note: If you're serving web requests, then you shouldn't be ending connections on every request. Just create a connection on server startup and use the connection/client object to query all the time. You can listen on the error event to handle server disconnection and for reconnecting purposes. Full code here.
From:
Readme.md - Server disconnects:
It says:
Server disconnects
You may lose the connection to a MySQL server due to network problems, the server timing you out, or the server crashing. All of these events are considered fatal errors, and will have the
err.code = 'PROTOCOL_CONNECTION_LOST'
. See the Error Handling section for more information.The best way to handle such unexpected disconnects is shown below:
function handleDisconnect(connection) { connection.on('error', function(err) { if (!err.fatal) { return; } if (err.code !== 'PROTOCOL_CONNECTION_LOST') { throw err; } console.log('Re-connecting lost connection: ' + err.stack); connection = mysql.createConnection(connection.config); handleDisconnect(connection); connection.connect(); }); } handleDisconnect(connection);
As you can see in the example above, re-connecting a connection is done by establishing a new connection. Once terminated, an existing connection object cannot be re-connected by design.
With Pool, disconnected connections will be removed from the pool freeing up space for a new connection to be created on the next getConnection call.
I have tweaked the function such that every time a connection is needed, an initializer function adds the handlers automatically:
function initializeConnection(config) {
function addDisconnectHandler(connection) {
connection.on("error", function (error) {
if (error instanceof Error) {
if (error.code === "PROTOCOL_CONNECTION_LOST") {
console.error(error.stack);
console.log("Lost connection. Reconnecting...");
initializeConnection(connection.config);
} else if (error.fatal) {
throw error;
}
}
});
}
var connection = mysql.createConnection(config);
// Add handlers.
addDisconnectHandler(connection);
connection.connect();
return connection;
}
Initializing a connection:
var connection = initializeConnection({
host: "localhost",
user: "user",
password: "password"
});
Minor suggestion: This may not apply to everyone but I did run into a minor issue relating to scope. If the OP feels this edit was unnecessary then he/she can choose to remove it. For me, I had to change a line in initializeConnection
, which was var connection = mysql.createConnection(config);
to simply just
connection = mysql.createConnection(config);
The reason being that if connection
is a global variable in your program, then the issue before was that you were making a new connection
variable when handling an error signal. But in my nodejs code, I kept using the same global connection
variable to run queries on, so the new connection
would be lost in the local scope of the initalizeConnection
method. But in the modification, it ensures that the global connection
variable is reset This may be relevant if you're experiencing an issue known as
Cannot enqueue Query after fatal error
after trying to perform a query after losing connection and then successfully reconnecting. This may have been a typo by the OP, but I just wanted to clarify.
I want to write a program that (...) creates the directory and a (...) file inside of it
because this is a very common question, here is the code to create multiple levels of directories and than call fopen. I'm using a gnu extension to print the error message with printf.
void rek_mkdir(char *path) {
char *sep = strrchr(path, '/');
if(sep != NULL) {
*sep = 0;
rek_mkdir(path);
*sep = '/';
}
if(mkdir(path, 0777) && errno != EEXIST)
printf("error while trying to create '%s'\n%m\n", path);
}
FILE *fopen_mkdir(char *path, char *mode) {
char *sep = strrchr(path, '/');
if(sep) {
char *path0 = strdup(path);
path0[ sep - path ] = 0;
rek_mkdir(path0);
free(path0);
}
return fopen(path,mode);
}
I think you're confusing server code with client code.
JavaScript runs on the client after it has received data from the server (like a webpage).
PHP runs on the server before it sends the data.
So there are two ways with interacting with JavaScript with php.
Like above, you can generate javascript with php in the same fashion you generate HTML with php.
Or you can use an AJAX request from javascript to interact with the server. The server can respond with data and the javascript can receive that and do something with it.
I'd recommend going back to the basics and studying how HTTP works in the server-client relationship. Then study the concept of server side languages and client side languages.
Then take a tutorial with ajax, and you will start getting the concept.
Good luck, google is your friend.
tightVNC 2.5.X and even pre 2.5 supports multi monitor. When you connect, you get a huge virtual monitor. However, this is also has disadvantages. UltaVNC (Tho when I tried it, was buggy in this area) allows you to connect to one huge virtual monitor or just to 1 screen at a time. (With a button to cycle through them) TightVNC also plan to support such a feature.. (When , no idea) This feature is important as if you have large multi monitors and connecting over a reasonably slow link.. The screen updates are just to slow.. Cutting down to one monitor to focus on is desirable.
I like tightVNC, but UltraVNC seems to have a few more features right now..
I have found tightVNC more solid. And that is why I have stuck with it.
I would try both. They both work well, but I imagine one would suite slightly more then the other.
this is supported from version hive 0.14
INSERT INTO TABLE pd_temp(dept,make,cost,id,asmb_city,asmb_ct,retail) VALUES('production','thailand',10,99202,'northcarolina','usa',20)
Below is actually the most accurate way you can do it, since the definition of "1 Month" changes depending on which month it is, and non of the other answers take this into account! If you want more information about the issue which is not built into the framework, you can read this post: A Real Timespan Object With .Years & .Months (however, reading that post isn't necessary to understand and use the function below, it works 100%, without the inherent inaccuracies of the approximation others love to use - and feel free to replace the .ReverseIt function with the built-in .Reverse function you may have on your framework (it's just here for completeness).
Please note that you can get any number of dates/times accuracy, seconds & minutes, or seconds, minutes and days, anywhere up to years (which would contain 6 parts/segments). If you specify top two and it's over a year old, it will return "1 year and 3 months ago" and won't return the rest because you've requested two segments. if it's only a few hours old, then it will only return "2 hours and 1 minute ago". Of course, same rules apply if you specify 1, 2, 3, 4, 5 or 6 segmets (maxes out at 6 because seconds, minutes, hours, days, months, years only make 6 types). It will also correct grammer issues like "minutes" vs "minute" depending on if it's 1 minute or more, same for all types, and the "string" generated will always be grammatically correct.
Here are some examples for use:
bAllowSegments identifies how many segments to show... ie: if 3, then return string would be (as an example)... "3 years, 2 months and 13 days"
(won't include hours, minutes and seconds as the top 3 time categories are returned), if however, the date was a newer date, such as something a few days ago, specifying the same segments (3) will return "4 days, 1 hour and 13 minutes ago"
instead, so it takes everything into account!
if bAllowSegments is 2 it would return "3 years and 2 months"
and if 6 (maximum value) would return "3 years, 2 months, 13 days, 13 hours, 29 minutes and 9 seconds"
, but, be reminded that it will NEVER RETURN
something like this "0 years, 0 months, 0 days, 3 hours, 2 minutes and 13 seconds ago"
as it understands there is no date data in the top 3 segments and ignores them, even if you specify 6 segments, so don't worry :). Of course, if there is a segment with 0 in it, it will take that into account when forming the string, and will display as "3 days and 4 seconds ago"
and ignoring the "0 hours" part! Enjoy and please comment if you like.
Public Function RealTimeUntilNow(ByVal dt As DateTime, Optional ByVal bAllowSegments As Byte = 2) As String
' bAllowSegments identifies how many segments to show... ie: if 3, then return string would be (as an example)...
' "3 years, 2 months and 13 days" the top 3 time categories are returned, if bAllowSegments is 2 it would return
' "3 years and 2 months" and if 6 (maximum value) would return "3 years, 2 months, 13 days, 13 hours, 29 minutes and 9 seconds"
Dim rYears, rMonths, rDays, rHours, rMinutes, rSeconds As Int16
Dim dtNow = DateTime.Now
Dim daysInBaseMonth = Date.DaysInMonth(dt.Year, dt.Month)
rYears = dtNow.Year - dt.Year
rMonths = dtNow.Month - dt.Month
If rMonths < 0 Then rMonths += 12 : rYears -= 1 ' add 1 year to months, and remove 1 year from years.
rDays = dtNow.Day - dt.Day
If rDays < 0 Then rDays += daysInBaseMonth : rMonths -= 1
rHours = dtNow.Hour - dt.Hour
If rHours < 0 Then rHours += 24 : rDays -= 1
rMinutes = dtNow.Minute - dt.Minute
If rMinutes < 0 Then rMinutes += 60 : rHours -= 1
rSeconds = dtNow.Second - dt.Second
If rSeconds < 0 Then rSeconds += 60 : rMinutes -= 1
' this is the display functionality
Dim sb As StringBuilder = New StringBuilder()
Dim iSegmentsAdded As Int16 = 0
If rYears > 0 Then sb.Append(rYears) : sb.Append(" year" & If(rYears <> 1, "s", "") & ", ") : iSegmentsAdded += 1
If bAllowSegments = iSegmentsAdded Then GoTo parseAndReturn
If rMonths > 0 Then sb.AppendFormat(rMonths) : sb.Append(" month" & If(rMonths <> 1, "s", "") & ", ") : iSegmentsAdded += 1
If bAllowSegments = iSegmentsAdded Then GoTo parseAndReturn
If rDays > 0 Then sb.Append(rDays) : sb.Append(" day" & If(rDays <> 1, "s", "") & ", ") : iSegmentsAdded += 1
If bAllowSegments = iSegmentsAdded Then GoTo parseAndReturn
If rHours > 0 Then sb.Append(rHours) : sb.Append(" hour" & If(rHours <> 1, "s", "") & ", ") : iSegmentsAdded += 1
If bAllowSegments = iSegmentsAdded Then GoTo parseAndReturn
If rMinutes > 0 Then sb.Append(rMinutes) : sb.Append(" minute" & If(rMinutes <> 1, "s", "") & ", ") : iSegmentsAdded += 1
If bAllowSegments = iSegmentsAdded Then GoTo parseAndReturn
If rSeconds > 0 Then sb.Append(rSeconds) : sb.Append(" second" & If(rSeconds <> 1, "s", "") & "") : iSegmentsAdded += 1
parseAndReturn:
' if the string is entirely empty, that means it was just posted so its less than a second ago, and an empty string getting passed will cause an error
' so we construct our own meaningful string which will still fit into the "Posted * ago " syntax...
If sb.ToString = "" Then sb.Append("less than 1 second")
Return ReplaceLast(sb.ToString.TrimEnd(" ", ",").ToString, ",", " and")
End Function
Of course, you will need a "ReplaceLast" function, which takes a source string, and an argument specifying what needs to be replaced, and another arg specifying what you want to replace it with, and it only replaces the last occurance of that string... i've included my one if you don't have one or dont want to implement it, so here it is, it will work "as is" with no modification needed. I know the reverseit function is no longer needed (exists in .net) but the ReplaceLast and the ReverseIt func are carried over from the pre-.net days, so please excuse how dated it may look (still works 100% tho, been using em for over ten years, can guarante they are bug free)... :). cheers.
<Extension()> _
Public Function ReplaceLast(ByVal sReplacable As String, ByVal sReplaceWhat As String, ByVal sReplaceWith As String) As String
' let empty string arguments run, incase we dont know if we are sending and empty string or not.
sReplacable = sReplacable.ReverseIt
sReplacable = Replace(sReplacable, sReplaceWhat.ReverseIt, sReplaceWith.ReverseIt, , 1) ' only does first item on reversed version!
Return sReplacable.ReverseIt.ToString
End Function
<Extension()> _
Public Function ReverseIt(ByVal strS As String, Optional ByVal n As Integer = -1) As String
Dim strTempX As String = "", intI As Integer
If n > strS.Length Or n = -1 Then n = strS.Length
For intI = n To 1 Step -1
strTempX = strTempX + Mid(strS, intI, 1)
Next intI
ReverseIt = strTempX + Right(strS, Len(strS) - n)
End Function
@Zelazny7's answer works, but if you want to keep ties you could do:
df[which(df$Amount == min(df$Amount)), ]
For example with the following data frame:
df <- data.frame(Name = c("A", "B", "C", "D", "E"),
Amount = c(150, 120, 175, 160, 120))
df[which.min(df$Amount), ]
# Name Amount
# 2 B 120
df[which(df$Amount == min(df$Amount)), ]
# Name Amount
# 2 B 120
# 5 E 120
Edit: If there are NAs in the Amount
column you can do:
df[which(df$Amount == min(df$Amount, na.rm = TRUE)), ]
I have installed jupyter with command pip3 install jupyter
and have the same problem. when instead I used the command pip3 install jupyter ipython
the problem was fixed.
to transfer to byte[]
(e.g. for saving to DB):
using (MemoryStream ms = new MemoryStream()) {
file.InputStream.CopyTo(ms);
byte[] array = ms.GetBuffer();
}
To transfer the input stream directly into the database, without storing it in the memory you can use this class taken from here and a bit changed:
public class VarbinaryStream : Stream {
private SqlConnection _Connection;
private string _TableName;
private string _BinaryColumn;
private string _KeyColumn;
private int _KeyValue;
private long _Offset;
private SqlDataReader _SQLReader;
private long _SQLReadPosition;
private bool _AllowedToRead = false;
public VarbinaryStream(
string ConnectionString,
string TableName,
string BinaryColumn,
string KeyColumn,
int KeyValue,
bool AllowRead = false)
{
// create own connection with the connection string.
_Connection = new SqlConnection(ConnectionString);
_TableName = TableName;
_BinaryColumn = BinaryColumn;
_KeyColumn = KeyColumn;
_KeyValue = KeyValue;
// only query the database for a result if we are going to be reading, otherwise skip.
_AllowedToRead = AllowRead;
if (_AllowedToRead == true)
{
try
{
if (_Connection.State != ConnectionState.Open)
_Connection.Open();
SqlCommand cmd = new SqlCommand(
@"SELECT TOP 1 [" + _BinaryColumn + @"]
FROM [dbo].[" + _TableName + @"]
WHERE [" + _KeyColumn + "] = @id",
_Connection);
cmd.Parameters.Add(new SqlParameter("@id", _KeyValue));
_SQLReader = cmd.ExecuteReader(
CommandBehavior.SequentialAccess |
CommandBehavior.SingleResult |
CommandBehavior.SingleRow |
CommandBehavior.CloseConnection);
_SQLReader.Read();
}
catch (Exception e)
{
// log errors here
}
}
}
// this method will be called as part of the Stream ímplementation when we try to write to our VarbinaryStream class.
public override void Write(byte[] buffer, int index, int count)
{
try
{
if (_Connection.State != ConnectionState.Open)
_Connection.Open();
if (_Offset == 0)
{
// for the first write we just send the bytes to the Column
SqlCommand cmd = new SqlCommand(
@"UPDATE [dbo].[" + _TableName + @"]
SET [" + _BinaryColumn + @"] = @firstchunk
WHERE [" + _KeyColumn + "] = @id",
_Connection);
cmd.Parameters.Add(new SqlParameter("@firstchunk", buffer));
cmd.Parameters.Add(new SqlParameter("@id", _KeyValue));
cmd.ExecuteNonQuery();
_Offset = count;
}
else
{
// for all updates after the first one we use the TSQL command .WRITE() to append the data in the database
SqlCommand cmd = new SqlCommand(
@"UPDATE [dbo].[" + _TableName + @"]
SET [" + _BinaryColumn + @"].WRITE(@chunk, NULL, @length)
WHERE [" + _KeyColumn + "] = @id",
_Connection);
cmd.Parameters.Add(new SqlParameter("@chunk", buffer));
cmd.Parameters.Add(new SqlParameter("@length", count));
cmd.Parameters.Add(new SqlParameter("@id", _KeyValue));
cmd.ExecuteNonQuery();
_Offset += count;
}
}
catch (Exception e)
{
// log errors here
}
}
// this method will be called as part of the Stream ímplementation when we try to read from our VarbinaryStream class.
public override int Read(byte[] buffer, int offset, int count)
{
try
{
long bytesRead = _SQLReader.GetBytes(0, _SQLReadPosition, buffer, offset, count);
_SQLReadPosition += bytesRead;
return (int)bytesRead;
}
catch (Exception e)
{
// log errors here
}
return -1;
}
public override bool CanRead
{
get { return _AllowedToRead; }
}
protected override void Dispose(bool disposing)
{
if (_Connection != null)
{
if (_Connection.State != ConnectionState.Closed)
try { _Connection.Close(); }
catch { }
_Connection.Dispose();
}
base.Dispose(disposing);
}
#region unimplemented methods
public override bool CanSeek
{
get { return false; }
}
public override bool CanWrite
{
get { return true; }
}
public override void Flush()
{
throw new NotImplementedException();
}
public override long Length
{
get { throw new NotImplementedException(); }
}
public override long Position
{
get
{
throw new NotImplementedException();
}
set
{
throw new NotImplementedException();
}
}
public override long Seek(long offset, SeekOrigin origin)
{
throw new NotImplementedException();
}
public override void SetLength(long value)
{
throw new NotImplementedException();
}
#endregion unimplemented methods }
and the usage:
using (var filestream = new VarbinaryStream(
"Connection_String",
"Table_Name",
"Varbinary_Column_name",
"Key_Column_Name",
keyValueId,
true))
{
postedFile.InputStream.CopyTo(filestream);
}
I have implemented BasicAuthenticationHandler
for basic authentication so you can use it with standart attributes Authorize
and AllowAnonymous
.
public class BasicAuthenticationHandler : AuthenticationHandler<BasicAuthenticationOptions>
{
protected override Task<AuthenticateResult> HandleAuthenticateAsync()
{
var authHeader = (string)this.Request.Headers["Authorization"];
if (!string.IsNullOrEmpty(authHeader) && authHeader.StartsWith("basic", StringComparison.OrdinalIgnoreCase))
{
//Extract credentials
string encodedUsernamePassword = authHeader.Substring("Basic ".Length).Trim();
Encoding encoding = Encoding.GetEncoding("iso-8859-1");
string usernamePassword = encoding.GetString(Convert.FromBase64String(encodedUsernamePassword));
int seperatorIndex = usernamePassword.IndexOf(':', StringComparison.OrdinalIgnoreCase);
var username = usernamePassword.Substring(0, seperatorIndex);
var password = usernamePassword.Substring(seperatorIndex + 1);
//you also can use this.Context.Authentication here
if (username == "test" && password == "test")
{
var user = new GenericPrincipal(new GenericIdentity("User"), null);
var ticket = new AuthenticationTicket(user, new AuthenticationProperties(), Options.AuthenticationScheme);
return Task.FromResult(AuthenticateResult.Success(ticket));
}
else
{
return Task.FromResult(AuthenticateResult.Fail("No valid user."));
}
}
this.Response.Headers["WWW-Authenticate"]= "Basic realm=\"yourawesomesite.net\"";
return Task.FromResult(AuthenticateResult.Fail("No credentials."));
}
}
public class BasicAuthenticationMiddleware : AuthenticationMiddleware<BasicAuthenticationOptions>
{
public BasicAuthenticationMiddleware(
RequestDelegate next,
IOptions<BasicAuthenticationOptions> options,
ILoggerFactory loggerFactory,
UrlEncoder encoder)
: base(next, options, loggerFactory, encoder)
{
}
protected override AuthenticationHandler<BasicAuthenticationOptions> CreateHandler()
{
return new BasicAuthenticationHandler();
}
}
public class BasicAuthenticationOptions : AuthenticationOptions
{
public BasicAuthenticationOptions()
{
AuthenticationScheme = "Basic";
AutomaticAuthenticate = true;
}
}
Registration at Startup.cs - app.UseMiddleware<BasicAuthenticationMiddleware>();
. With this code, you can restrict any controller with standart attribute Autorize:
[Authorize(ActiveAuthenticationSchemes = "Basic")]
[Route("api/[controller]")]
public class ValuesController : Controller
and use attribute AllowAnonymous
if you apply authorize filter on application level.
Facebook does not allow you to change the "What's on your mind?" text box, unless of course you're developing an application for use on Facebook.
the type just tells you what the bit pattern is supposed to represent. the bits are only what you make of them. the same sequences can be interpreted in different ways.
Try TinyXML or IrrXML...Both are lightweight XML parsers ( I'd suggest you to use TinyXML, anyway ).
The cleanest way here I believe is going to disable your client side validation and on the server side you will need to:
Seems even a custom view model here wont solve the problem because the number of those 'pre answered' fields could vary. If they dont then a custom view model may indeed be the easiest way, but using the above technique you can get around your validations issues.
This error happens when you have a ViewBag Non-Existent in your razor code calling a method.
Controller
public ActionResult Accept(int id)
{
return View();
}
razor:
<div class="form-group">
@Html.LabelFor(model => model.ToId, "To", htmlAttributes: new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.Flag(Model.from)
</div>
</div>
<div class="form-group">
<div class="col-md-10">
<input value="@ViewBag.MaximounAmount.ToString()" />@* HERE is the error *@
</div>
</div>
For some reason, the .net aren't able to show the error in the correct line.
Normally this causes a lot of wasted time.
Great news, the fix is coming in March 2018, see this link: https://developers.google.com/web/updates/2018/01/devtools
"Local Overrides let you make changes in DevTools, and keep those changes across page loads. Previously, any changes that you made in DevTools would be lost when you reloaded the page. Local Overrides work for most file types
How it works:
To set up Local Overrides:
UPDATE (March 19, 2018): It's live, detailed explanations here: https://developers.google.com/web/updates/2018/01/devtools#overrides
If you are using Windows,
make a folder and open git bash from there
in the git bash,
git clone [email protected]:Example/projectName.git
You need to first transform data1, in your case by calling ToString()
on each element.
List<int> data1 = new List<int> {1,2,3,4,5};
List<string> data2 = new List<string>{"6","3"};
var newData = data1.Select(i => i.ToString()).Intersect(data2);
List<int> data1 = new List<int> {1,2,3,4,5};
List<string> data2 = new List<string>{"6","3"};
var newData = data1.Intersect(data2.Select(s => int.Parse(s));
Note that this will throw an exception if not all strings are numbers. So you could do the following first to check:
int temp;
if(data2.All(s => int.TryParse(s, out temp)))
{
// All data2 strings are int's
}
First off, that warning does not always mean so much. I usually disabled it after making sure it's not a performance bottle neck. It just means the IEnumerable
is evaluated twice, wich is usually not a problem unless the evaluation
itself takes a long time. Even if it does take a long time, in this case your only using one element the first time around.
In this scenario you could also exploit the powerful linq extension methods even more.
var firstObject = objects.First();
return DoSomeThing(firstObject).Concat(DoSomeThingElse(objects).ToList();
It is possible to only evaluate the IEnumerable
once in this case with some hassle, but profile first and see if it's really a problem.
Assuming these are text files (since you are using notepad++) and that you are on Windows, you could fashion a simple batch script to concatenate them together.
For example, in the directory with all the text files, execute the following:
for %f in (*.txt) do type "%f" >> combined.txt
This will merge all files matching *.txt into one file called combined.txt.
For more information:
PHP 5.3 has functions to create and reformat at DateTime object from whatever format you specify:
$mysql_date = "2012-01-02"; // date in Y-m-d format as MySQL stores it
$date_obj = date_create_from_format('Y-m-d',$mysql_date);
$date = date_format($date_obj, 'm/d/Y');
echo $date;
Outputs:
01/02/2012
MySQL can also control the formatting by using the STR_TO_DATE()
function when inserting/updating, and the DATE_FORMAT()
when querying.
$php_date = "01/02/2012";
$update_query = "UPDATE `appointments` SET `start_time` = STR_TO_DATE('" . $php_date . "', '%m/%d/%Y')";
$query = "SELECT DATE_FORMAT(`start_time`,'%m/%d/%Y') AS `start_time` FROM `appointments`";
First in your terminal:
rails g migration change_date_format_in_my_table
Then in your migration file:
For Rails >= 3.2:
class ChangeDateFormatInMyTable < ActiveRecord::Migration
def up
change_column :my_table, :my_column, :datetime
end
def down
change_column :my_table, :my_column, :date
end
end
When your program has more open descriptors than the open files ulimit (ulimit -a will list this), the kernel will refuse to open any more file descriptors. Make sure you don't have any file descriptor leaks - for example, by running it for a while, then stopping and seeing if any extra fds are still open when it's idle - and if it's still a problem, change the nofile ulimit for your user in /etc/security/limits.conf
I'm assuming you have a typo in your get statement and that it should be test1.get(key). If so, I'm not sure why it is not returning an ArrayList unless you are not putting in the correct type in the map in the first place.
This should work:
// populate the map
Map<String, List<String>> test1 = new LinkedHashMap<String, List<String>>();
test1.put("key1", new ArrayList<String>());
test1.put("key2", new ArrayList<String>());
// loop over the set using an entry set
for( Map.Entry<String,List<String>> entry : test1.entrySet()){
String key = entry.getKey();
List<String>value = entry.getValue();
// ...
}
or you can use
// second alternative - loop over the keys and get the value per key
for( String key : test1.keySet() ){
List<String>value = test1.get(key);
// ...
}
You should use the interface names when declaring your vars (and in your generic params) unless you have a very specific reason why you are defining using the implementation.
You must use prefix "php5.6-" instead of "php5-" as in ubuntu 14.04 and olders:
sudo apt-get install php5.6 php5.6-mcrypt
Generally to count distinct values in single column, you can use Series.value_counts
:
df.domain.value_counts()
#'vk.com' 5
#'twitter.com' 2
#'facebook.com' 1
#'google.com' 1
#Name: domain, dtype: int64
To see how many unique values in a column, use Series.nunique
:
df.domain.nunique()
# 4
To get all these distinct values, you can use unique
or drop_duplicates
, the slight difference between the two functions is that unique
return a numpy.array
while drop_duplicates
returns a pandas.Series
:
df.domain.unique()
# array(["'vk.com'", "'twitter.com'", "'facebook.com'", "'google.com'"], dtype=object)
df.domain.drop_duplicates()
#0 'vk.com'
#2 'twitter.com'
#4 'facebook.com'
#6 'google.com'
#Name: domain, dtype: object
As for this specific problem, since you'd like to count distinct value with respect to another variable, besides groupby
method provided by other answers here, you can also simply drop duplicates firstly and then do value_counts()
:
import pandas as pd
df.drop_duplicates().domain.value_counts()
# 'vk.com' 3
# 'twitter.com' 2
# 'facebook.com' 1
# 'google.com' 1
# Name: domain, dtype: int64
You can use regex.findall()
:
import re
line = " I am having a very nice day."
count = len(re.findall(r'\w+', line))
print (count)
You can see scripts and more scheduled for startup inside Task Manager in the Startup tab. Here is how to add a new item to the scheduled startup items.
First, open up explorer to shell:startup location via start-button => run:
explorer shell:startup
Right click in that folder and in the context menu select a new shortcut. Enter the following:
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe -NoProfile -Command "C:\myfolder\somescript.ps1"
This will startup a Powershell script without starting up your $profile scripts for faster execution. This will make sure that the powershell script is started up.
The shell:startup folder is in:
$env:APPDATA\Microsoft\Windows
And then into the folder:
Start Menu\Programs\Startup
As usual, Microsoft makes things a bit cumbersome for us when a path contains spaces, so you have to put quotes around the full path or just hit tab inside Powershell to autocomplete in this case.
For an ArrayAdapter
, notifyDataSetChanged
only works if you use the add()
, insert()
, remove()
, and clear()
on the Adapter.
When an ArrayAdapter
is constructed, it holds the reference for the List
that was passed in. If you were to pass in a List
that was a member of an Activity, and change that Activity member later, the ArrayAdapter
is still holding a reference to the original List
. The Adapter does not know you changed the List
in the Activity.
Your choices are:
ArrayAdapter
to modify the underlying List (add()
, insert()
, remove()
, clear()
, etc.)ArrayAdapter
with the new List
data. (Uses a lot of resources and garbage collection.)BaseAdapter
and ListAdapter
that allows changing of the underlying List
data structure.notifyDataSetChanged()
every time the list is updated. To call it on the UI-Thread, use the runOnUiThread()
of Activity
.
Then, notifyDataSetChanged()
will work.In case someone else stumbles here... you can set padding as well, for instance:
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
int padding = 200 // padding left and right
toolbar.setPadding(padding, toolbar.getPaddingTop(), padding, toolbar.getPaddingBottom());
Or contentInset:
toolbar.setContentInsetsAbsolute(toolbar.getContentInsetLeft(), 200);
use return Observable.of(HEROES);
Also worth bearing in mind is the context in which you're doing this, as an exhaustive check can be expensive and not always necessary.
For example, this solution works fine for the situation in which I'm using it (but obviously it can't be relied on in all cases...)
/**
* A quick and dirty way to determine whether the passed in array is associative or not, assuming that either:<br/>
* <br/>
* 1) All the keys are strings - i.e. associative<br/>
* or<br/>
* 2) All the keys are numeric - i.e. not associative<br/>
*
* @param array $objects
* @return boolean
*/
private function isAssociativeArray(array $objects)
{
// This isn't true in the general case, but it's a close enough (and quick) approximation for the context in
// which we're using it.
reset($objects);
return count($objects) > 0 && is_string(key($objects));
}
This will allow you to update a table based on the column value not being found in another table.
UPDATE table1 SET table1.column = 'some_new_val' WHERE table1.id IN (
SELECT *
FROM (
SELECT table1.id
FROM table1
LEFT JOIN table2 ON ( table2.column = table1.column )
WHERE table1.column = 'some_expected_val'
AND table12.column IS NULL
) AS Xalias
)
This will update a table based on the column value being found in both tables.
UPDATE table1 SET table1.column = 'some_new_val' WHERE table1.id IN (
SELECT *
FROM (
SELECT table1.id
FROM table1
JOIN table2 ON ( table2.column = table1.column )
WHERE table1.column = 'some_expected_val'
) AS Xalias
)
Do as follows. I think it will be helpful to you.
private boolean isVisibleToUser = false;
private boolean isExecutedOnce = false;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View root = inflater.inflate(R.layout.fragment_my, container, false);
if (isVisibleToUser && !isExecutedOnce) {
executeWithActivity(getActivity());
}
return root;
}
@Override
public void setUserVisibleHint(boolean isVisibleToUser) {
super.setUserVisibleHint(isVisibleToUser);
this.isVisibleToUser = isVisibleToUser;
if (isVisibleToUser && getActivity()!=null) {
isExecutedOnce =true;
executeWithActivity(getActivity());
}
}
private void executeWithActivity(Activity activity){
//Do what you have to do when page is loaded with activity
}
The only way I able to get this to work was by doing this on the presenting view controller:
func didTapButton() {
self.definesPresentationContext = true
self.modalTransitionStyle = .crossDissolve
let yourVC = self.storyboard?.instantiateViewController(withIdentifier: "YourViewController") as! YourViewController
let navController = UINavigationController(rootViewController: yourVC)
navController.modalPresentationStyle = .overCurrentContext
navController.modalTransitionStyle = .crossDissolve
self.present(navController, animated: true, completion: nil)
}
If the source jars are in the local repository and you are using Eclipses maven support the sources are getting automatically attached. You can run mvn dependency:sources
to download all source jars for a given project. Not sure how to do the same with the documentation though.
Instead of configuring Tomcat to redirect requests, use Apache as a frontend with the Apache Tomcat connector so that Apache is only serving static content, while asking tomcat for dynamic content.
Using the JKmount directive (or others) you could specify exactly which requests are sent to Tomcat.
Requests for static content, such as images, would be served directly by Apache, using a standard virtual host configuration, while other requests, defined in the JKMount directive will be sent to Tomcat workers.
I think this implementation would give you the most flexibility and control on the overall application.
If we use Bash I believe this is the most convenient way as it doesn't require calls to any external commands:
THIS_PATH="${BASH_SOURCE[0]}";
THIS_DIR=$(dirname $THIS_PATH)
Yet another alternative to manage multiple jdk versions is jEnv
After installation, you can simply change java version "locally" i.e. for a specific project directory by:
jenv local 1.6
This will also make mvn use that version locally, when you enable the mvn plugin:
jenv enable-plugin maven
If you're using IntelliJ, you can simply go to Preferences -> Build, Execution, Deployment -> Build Tools -> Maven and check/uncheck Work offline.
I got around it by wrapping the supplied runnable submitted to the executor.
CompletableFuture.runAsync(() -> {
try {
runnable.run();
} catch (Throwable e) {
Log.info(Concurrency.class, "runAsync", e);
}
}, executorService);
Depends on what you know about your url and exactly what you're tryinh to do. If you know that it will always end in '.com' (or '.net' or '.org') then
url=url[:-4]
is the quickest solution. If it's a more general URLs then you're probably better of looking into the urlparse library that comes with python.
If you on the other hand you simply want to remove everything after the final '.' in a string then
url.rsplit('.',1)[0]
will work. Or if you want just want everything up to the first '.' then try
url.split('.',1)[0]
Corrected a few things and added an alternative select - delete as appropriate.
DELIMITER |
CREATE PROCEDURE getNearestCities
(
IN p_cityID INT -- should this be int unsigned ?
)
BEGIN
DECLARE cityLat FLOAT; -- should these be decimals ?
DECLARE cityLng FLOAT;
-- method 1
SELECT lat,lng into cityLat, cityLng FROM cities WHERE cities.cityID = p_cityID;
SELECT
b.*,
HAVERSINE(cityLat,cityLng, b.lat, b.lng) AS dist
FROM
cities b
ORDER BY
dist
LIMIT 10;
-- method 2
SELECT
b.*,
HAVERSINE(a.lat, a.lng, b.lat, b.lng) AS dist
FROM
cities AS a
JOIN cities AS b on a.cityID = p_cityID
ORDER BY
dist
LIMIT 10;
END |
delimiter ;
As Nayan said the Path has to updated properly in my case the apache-maven was installed in C:\apache-maven and settings.xml was found inside C:\apache-maven\conf\settings.xml
if this doesn't work go to your local repos
in my case C:\Users\<<"name">>.m2\
and search for .lastUpdated and delete them
then build the maven
You can do the following
Reload
It will add a reload button on your right hand at the bottom of the vs code.
You can extract encoding of a single file with the file command. I have a sample.html file with:
$ file sample.html
sample.html: HTML document, UTF-8 Unicode text, with very long lines
$ file -b sample.html
HTML document, UTF-8 Unicode text, with very long lines
$ file -bi sample.html
text/html; charset=utf-8
$ file -bi sample.html | awk -F'=' '{print $2 }'
utf-8
It is stored in a file called connections.xml under
\Users\[User]\AppData\Roaming\SQL Developer\System\
When I renamed the file, all my connection info went away. I renamed it back, and it all came back. When I viewed the XML file, I found both test connection aliases, ports, usernames, roles, authentication types, etc.
"Obliberating" contents from a svn repository, i.e. wiping this contents from the disc, can be done as described in this article http://www.limilabs.com/blog/how-to-permanently-remove-svn-folder
It requires access to the server side svn repository, thus you must have some admin privileges.
It works by (a) dumping the repository content into a file, (b) excluding some contents and (c) wiping and re-creating the plain repository again and eventually by (d) loading the filtered repository contents:
svnadmin dump "path/to/svnrepo" > svnrepo.txt // (a)
svndumpfilter exclude "my/folder" < svnrepo.txt > filtered.txt // (b)
rm -rf "path/to/svnrepo" && svnadmin create "path/to/svnrepo" // (c)
svnadmin load "path/to/svnrepo" < filtered.txt // (d)
The repository counter is unchanged by this operations. However, your repository is now "missing" all those revision numbers used to create that contents you removed in step (b).
Subversion 1.7.5 appears to handle this "missing" revisions pretty well. Using "svn ls -r $missing" for example, reports the very same as "svn ls -r $(( missing - 1))".
Contrary to this, my (pretty old) VIEWVC reports "no contents" when querying a "missing" revision.
You could profile it, if you really cared. Write a loop of many iterations and see what happens. Chances are, however, that this is not the bottleneck in your application, and TrimStart seems the most semantically correct. Strive to write code readably before optimizing.
assets/images
folderpubspec.yaml
file.assets
or images
. You don't even need to make images
a subfolder. Whatever name you use, though, is what you will regester in the pubspec.yaml
file.assets/images
. The relative path of lake.jpg
, for example, would be assets/images/lake.jpg
.pubspec.yaml
Open the pubspec.yaml
file that is in the root of your project.
Add an assets
subsection to the flutter
section like this:
flutter:
assets:
- assets/images/lake.jpg
If you have multiple images that you want to include then you can leave off the file name and just use the directory name (include the final /
):
flutter:
assets:
- assets/images/
Get the asset in an Image widget with Image.asset('assets/images/lake.jpg')
.
The entire main.dart
file is here:
import 'package:flutter/material.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: Text("Image from assets"),
),
body: Image.asset('assets/images/lake.jpg'), // <--- image
),
);
}
}
When making changes to pubspec.yaml I find that I often need to completely stop my app and restart it again, especially when adding assets. Otherwise I get a crash.
Running the app now you should have something like this:
The first video here goes into a lot of detail about how to include images in your app. The second video covers more about how to adjust how they look.
I've had issues with using SELECT last_insert_rowid()
in a multithreaded environment. If another thread inserts into another table that has an autoinc, last_insert_rowid will return the autoinc value from the new table.
Here's where they state that in the doco:
If a separate thread performs a new INSERT on the same database connection while the sqlite3_last_insert_rowid() function is running and thus changes the last insert rowid, then the value returned by sqlite3_last_insert_rowid() is unpredictable and might not equal either the old or the new last insert rowid.
That's from sqlite.org doco
KeyStore keyStore = KeyStore.getInstance(KeyStore.getDefaultType());
keyStore.load(new FileInputStream(new File(keyStoreFile)),
keyStorePassword.toCharArray());
SSLConnectionSocketFactory socketFactory = new SSLConnectionSocketFactory(
new SSLContextBuilder()
.loadTrustMaterial(null, new TrustSelfSignedStrategy())
.loadKeyMaterial(keyStore, keyStorePassword.toCharArray())
.build(),
NoopHostnameVerifier.INSTANCE);
HttpClient httpClient = HttpClients.custom().setSSLSocketFactory(
socketFactory).build();
ClientHttpRequestFactory requestFactory = new HttpComponentsClientHttpRequestFactory(
httpClient);
RestTemplate restTemplate = new RestTemplate(requestFactory);
MyRecord record = restTemplate.getForObject(uri, MyRecord.class);
LOG.debug(record.toString());
There are two approaches explained in the great tutorial be Alex Lockwood: http://www.androiddesignpatterns.com/2016/08/coloring-buttons-with-themeoverlays-background-tints.html:
Approach #1: Modifying the button’s background color w/ a ThemeOverlay
<!-- res/values/themes.xml -->
<style name="RedButtonLightTheme" parent="ThemeOverlay.AppCompat.Light">
<item name="colorAccent">@color/googred500</item>
</style>
<Button
style="@style/Widget.AppCompat.Button.Colored"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:theme="@style/RedButtonLightTheme"/>
Approach #2: Setting the AppCompatButton’s background tint
<!-- res/color/btn_colored_background_tint.xml -->
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<!-- Disabled state. -->
<item android:state_enabled="false"
android:color="?attr/colorButtonNormal"
android:alpha="?android:attr/disabledAlpha"/>
<!-- Enabled state. -->
<item android:color="?attr/colorAccent"/>
</selector>
<android.support.v7.widget.AppCompatButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:backgroundTint="@color/btn_colored_background_tint"/>
In Bootstrap 3 they do not have separate classes for different styles of labels.
http://getbootstrap.com/components/
However, you can customize bootstrap classes that way. In your css file
.lb-sm {
font-size: 12px;
}
.lb-md {
font-size: 16px;
}
.lb-lg {
font-size: 20px;
}
Alternatively, you can use header tags to change the sizes. For example, here is a medium sized label and a small-sized label
<link href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" rel="stylesheet"/>_x000D_
<h3>Example heading <span class="label label-default">New</span></h3>_x000D_
<h6>Example heading <span class="label label-default">New</span></h6>
_x000D_
They might add size classes for labels in future Bootstrap versions.
I found the nice resource Standard C++ Containers. Probably this is what you all looking for.
VECTOR
Constructors
vector<T> v; Make an empty vector. O(1)
vector<T> v(n); Make a vector with N elements. O(n)
vector<T> v(n, value); Make a vector with N elements, initialized to value. O(n)
vector<T> v(begin, end); Make a vector and copy the elements from begin to end. O(n)
Accessors
v[i] Return (or set) the I'th element. O(1)
v.at(i) Return (or set) the I'th element, with bounds checking. O(1)
v.size() Return current number of elements. O(1)
v.empty() Return true if vector is empty. O(1)
v.begin() Return random access iterator to start. O(1)
v.end() Return random access iterator to end. O(1)
v.front() Return the first element. O(1)
v.back() Return the last element. O(1)
v.capacity() Return maximum number of elements. O(1)
Modifiers
v.push_back(value) Add value to end. O(1) (amortized)
v.insert(iterator, value) Insert value at the position indexed by iterator. O(n)
v.pop_back() Remove value from end. O(1)
v.assign(begin, end) Clear the container and copy in the elements from begin to end. O(n)
v.erase(iterator) Erase value indexed by iterator. O(n)
v.erase(begin, end) Erase the elements from begin to end. O(n)
For other containers, refer to the page.
There is a list option in Data validation. If this is combined with a VLOOKUP formula you would be able to convert the selected value into a number.
The steps in Excel 2010 are:
In a cell enter a formula like this
=VLOOKUP(A2,$D$3:$E$5,2,FALSE)
which will return the matching value from the second part of your list.
Alternatively, Form controls can be placed on a worksheet. They can be linked to a range and return the position number of the selected value to a specific cell.
The steps in Excel 2010 are:
That is the function that I used for my project, and it works as expected.
function array_csv_download( $array, $filename = "export.csv", $delimiter=";" )
{
header( 'Content-Type: application/csv' );
header( 'Content-Disposition: attachment; filename="' . $filename . '";' );
// clean output buffer
ob_end_clean();
$handle = fopen( 'php://output', 'w' );
// use keys as column titles
fputcsv( $handle, array_keys( $array['0'] ) );
foreach ( $array as $value ) {
fputcsv( $handle, $value , $delimiter );
}
fclose( $handle );
// flush buffer
ob_flush();
// use exit to get rid of unexpected output afterward
exit();
}
There seems to be a lot of confusion regarding the preprocessor.
What the compiler does when it sees a #include
that it replaces that line with the contents of the included files, no questions asked.
So if you have a file a.h
with this contents:
typedef int my_number;
and a file b.c
with this content:
#include "a.h"
#include "a.h"
the file b.c
will be translated by the preprocessor before compilation to
typedef int my_number;
typedef int my_number;
which will result in a compiler error, since the type my_number
is defined twice. Even though the definition is the same this is not allowed by the C language.
Since a header often is used in more than one place include guards usually are used in C. This looks like this:
#ifndef _a_h_included_
#define _a_h_included_
typedef int my_number;
#endif
The file b.c
still would have the whole contents of the header in it twice after being preprocessed. But the second instance would be ignored since the macro _a_h_included_
would already have been defined.
This works really well, but has two drawbacks. First of all the include guards have to be written, and the macro name has to be different in every header. And secondly the compiler has still to look for the header file and read it as often as it is included.
Objective-C has the #import
preprocessor instruction (it also can be used for C and C++ code with some compilers and options). This does almost the same as #include
, but it also notes internally which file has already been included. The #import
line is only replaced by the contents of the named file for the first time it is encountered. Every time after that it is just ignored.
Your list just contains a string. Convert it to integer IDs:
L = ['350882 348521 350166\r\n']
ids = [int(i) for i in L[0].strip().split()]
print(ids)
id = 348521
if id not in ids:
ids.append(id)
print(ids)
id = 348522
if id not in ids:
ids.append(id)
print(ids)
# Turn it back into your odd format
L = [' '.join(str(id) for id in ids) + '\r\n']
print(L)
Output:
[350882, 348521, 350166]
[350882, 348521, 350166]
[350882, 348521, 350166, 348522]
['350882 348521 350166 348522\r\n']
You entered an alphanumeric and int, blank delimited in mystr
.
You then tried to convert the first token (blank delimited) into an int
.
The first token was RS which failed to convert to int
, leaving a zero for myprice, and we all know what zero times anything yields.
When you only entered int values the second time, everything worked as you expected.
It was the spurious RS that caused your code to fail.
Various ways:
return
break
or continue
when in a loopbreak
to label when in a labeled statement (see @aioobe's example)break
when in a switch statement....
System.exit()
... though that's probably not what you mean.In my opinion, "break to label" is the most natural (least contorted) way to do this if you just want to get out of a try/catch. But it could be confusing to novice Java programmers who have never encountered that Java construct.
But while labels are obscure, in my opinion wrapping the code in a do ... while (false)
so that you can use a break
is a worse idea. This will confuse non-novices as well as novices. It is better for novices (and non-novices!) to learn about labeled statements.
By the way, return
works in the case where you need to break out of a finally
. But you should avoid doing a return
in a finally
block because the semantics are a bit confusing, and liable to give the reader a headache.
As an alternative to the chosen answer, and with the same safe semantics of Marcel's, here is a compact way of using a Python dictionary to specify the values. It has the benefit of being easy to modify as you add or remove columns to insert:
meta_cols=('SongName','SongArtist','SongAlbum','SongGenre')
insert='insert into Songs ({0}) values ({1})'.
.format(','.join(meta_cols), ','.join( ['%s']*len(meta_cols) ))
args = [ meta[i] for i in meta_cols ]
cursor=db.cursor()
cursor.execute(insert,args)
db.commit()
Where meta is the dictionary holding the values to insert. Update can be done in the same way:
meta_cols=('SongName','SongArtist','SongAlbum','SongGenre')
update='update Songs set {0} where id=%s'.
.format(','.join([ '{0}=%s'.format(c) for c in meta_cols ]))
args = [ meta[i] for i in meta_cols ]
args.append( songid )
cursor=db.cursor()
cursor.execute(update,args)
db.commit()
Look up the new HTML5 Input Types. These instruct browsers to perform client-side filtering of data, but the implementation is incomplete across different browsers. The pattern
attribute will do regex-style filtering, but, again, browsers don't fully (or at all) support it.
However, these won't block the input itself, it will simply prevent submitting the form with the invalid data. You'll still need to trap the onkeydown
event to block key input before it displays on the screen.
I use this: it uses temporary file but goes deeply in a directory until it find a regular file and return it.
# find for a quasi-random file in a directory tree:
# directory to start search from:
ROOT="/";
tmp=/tmp/mytempfile
TARGET="$ROOT"
FILE="";
n=
r=
while [ -e "$TARGET" ]; do
TARGET="$(readlink -f "${TARGET}/$FILE")" ;
if [ -d "$TARGET" ]; then
ls -1 "$TARGET" 2> /dev/null > $tmp || break;
n=$(cat $tmp | wc -l);
if [ $n != 0 ]; then
FILE=$(shuf -n 1 $tmp)
# or if you dont have/want to use shuf:
# r=$(($RANDOM % $n)) ;
# FILE=$(tail -n +$(( $r + 1 )) $tmp | head -n 1);
fi ;
else
if [ -f "$TARGET" ] ; then
rm -f $tmp
echo $TARGET
break;
else
# is not a regular file, restart:
TARGET="$ROOT"
FILE=""
fi
fi
done;
I'm going to attempt to explain this without making any mistakes, but I'm betting this will attract a clarification or two in the comments.
A data frame is a list. When you subset a data frame using the name of a column and [
, what you're getting is a sublist (or a sub data frame). If you want the actual atomic column, you could use [[
, or somewhat confusingly (to me) you could do aframe[,2]
which returns a vector, not a sublist.
So try running this sequence and maybe things will be clearer:
avector <- as.vector(aframe['a2'])
class(avector)
avector <- aframe[['a2']]
class(avector)
avector <- aframe[,2]
class(avector)
In your controller class, just add @ComponentScan("package") annotation. In my case the package name is com.shoppingcart.So i wrote the code as @ComponentScan("com.shoppingcart") and it worked for me.
Using pipe:
cat en-tl.100.en | head -10
Typically the register key and value are constants in the program. If so, here is an example how to read a DWORD registry value Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\FileSystem\LongPathsEnabled
:
#include <windows.h>
DWORD val;
DWORD dataSize = sizeof(val);
if (ERROR_SUCCESS == RegGetValueA(HKEY_LOCAL_MACHINE, "SYSTEM\\CurrentControlSet\\Control\\FileSystem", "LongPathsEnabled", RRF_RT_DWORD, nullptr /*type not required*/, &val, &dataSize)) {
printf("Value is %i\n", val);
// no CloseKey needed because it is a predefined registry key
}
else {
printf("Error reading.\n");
}
To adapt for other value types, see https://docs.microsoft.com/en-us/windows/win32/api/winreg/nf-winreg-reggetvaluea for complete spec.
I think that you are looking for something like this:
function rightclick() {
var rightclick;
var e = window.event;
if (e.which) rightclick = (e.which == 3);
else if (e.button) rightclick = (e.button == 2);
alert(rightclick); // true or false, you can trap right click here by if comparison
}
(http://www.quirksmode.org/js/events_properties.html)
And then use the onmousedown even with the function rightclick() (if you want to use it globally on whole page you can do this <body onmousedown=rightclick(); >
A URL of the form https://github.com/<owner>/<project>/commit/<hash>
will show you the changes introduced in that commit. For example here's a recent bugfix I made to one of my projects on GitHub:
https://github.com/jerith666/git-graph/commit/35e32b6a00dec02ae7d7c45c6b7106779a124685
You can also shorten the hash to any unique prefix, like so:
https://github.com/jerith666/git-graph/commit/35e32b
I know you just asked about GitHub, but for completeness: If you have the repository checked out, from the command line, you can achieve basically the same thing with either of these commands (unique prefixes work here too):
git show 35e32b6a00dec02ae7d7c45c6b7106779a124685
git log -p -1 35e32b6a00dec02ae7d7c45c6b7106779a124685
Note: If you shorten the commit hash too far, the command line gives you a helpful disambiguation message, but GitHub will just return a 404.
I was testing a function that had multiple UPDATE
statements within IF-ELSE
blocks.
I was testing all possible paths, so I reset the tables to their previous values with 'manual' UPDATE
statements each time before running the function again.
I noticed that the issue would happen just after those UPDATE
statements;
I added a COMMIT;
after the UPDATE
statement I used to reset the tables and that solved the problem.
So, caution, the problem was not the function itself...
We ran into this problem when working with node on Windows.
Rather than requiring anyone who attempts to run the app to set these variables, we provided a fallback within the application.
var environment = process.env.NODE_ENV || 'development';
In a production environment, we would define it per the usual methods (SET/export).
The purpose of .iteritems()
was to use less memory space by yielding one result at a time while looping. I am not sure why Python 3 version does not support iteritems()
though it's been proved to be efficient than .items()
If you want to include a code that supports both the PY version 2 and 3,
try:
iteritems
except NameError:
iteritems = items
This can help if you deploy your project in some other system and you aren't sure about the PY version.
Jackson has to know in what order to pass fields from a JSON object to the constructor. It is not possible to access parameter names in Java using reflection - that's why you have to repeat this information in annotations.
If system_clock, this class have time_t conversion.
#include <iostream>
#include <chrono>
#include <ctime>
using namespace std::chrono;
int main()
{
system_clock::time_point p = system_clock::now();
std::time_t t = system_clock::to_time_t(p);
std::cout << std::ctime(&t) << std::endl; // for example : Tue Sep 27 14:21:13 2011
}
example result:
Thu Oct 11 19:10:24 2012
EDIT: But, time_t does not contain fractional seconds. Alternative way is to use time_point::time_since_epoch() function. This function returns duration from epoch. Follow example is milli second resolution's fractional.
#include <iostream>
#include <chrono>
#include <ctime>
using namespace std::chrono;
int main()
{
high_resolution_clock::time_point p = high_resolution_clock::now();
milliseconds ms = duration_cast<milliseconds>(p.time_since_epoch());
seconds s = duration_cast<seconds>(ms);
std::time_t t = s.count();
std::size_t fractional_seconds = ms.count() % 1000;
std::cout << std::ctime(&t) << std::endl;
std::cout << fractional_seconds << std::endl;
}
example result:
Thu Oct 11 19:10:24 2012
925
In Internet Explorer, parentElement
is undefined for SVG elements, whereas parentNode
is defined.
When you use QDir.mkpath() it returns true if the path already exists, in the other hand QDir.mkdir() returns false if the path already exists. So depending on your program you have to choose which fits better.
You can see more on Qt Documentation
.+,(.+)
Explanation:
.+,
will search for everything before the comma, including the comma.
(.+)
will search for everything after the comma, and depending on your regex environment,
\1
is the reference for the first parentheses captured group that you need, in this example, everything after the comma.
Try:
mmatrix = np.zeros((nrows, ncols))
Since the shape parameter has to be an int or sequence of ints
http://docs.scipy.org/doc/numpy/reference/generated/numpy.zeros.html
Otherwise you are passing ncols
to np.zeros
as the dtype.
22 bytes, if you do it like this:
System.Guid guid = System.Guid.NewGuid();
byte[] guidbytes = guid.ToByteArray();
string uuid = Convert.ToBase64String(guidbytes).Trim('=');
lsof -n -i | awk '{ print $1,$9; }' | sort -u
This displays who's doing what. Remove -n to see hostnames (a bit slower).
I find git stash very useful for temporal handling of all 'dirty' states.
There is a simple trick for this. After you constructed the frame with all it buttons do this:
frame.getRootPane().setDefaultButton(submitButton);
For each frame, you can set a default button that will automatically listen to the Enter key (and maybe some other event's I'm not aware of). When you hit enter in that frame, the ActionListeners their actionPerformed()
method will be invoked.
And the problem with your code as far as I see is that your dialog pops up every time you hit a key, because you didn't put it in the if-body. Try changing it to this:
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode()==KeyEvent.VK_ENTER){
System.out.println("Hello");
JOptionPane.showMessageDialog(null , "You've Submitted the name " + nameInput.getText());
}
}
UPDATE: I found what is wrong with your code. You are adding the key listener to the Submit button instead of to the TextField. Change your code to this:
SubmitButton listener = new SubmitButton(textBoxToEnterName);
textBoxToEnterName.addActionListener(listener);
submit.addKeyListener(listener);
Are you moving it using svn mv
, or just mv
? I think using just mv
may cause this issue.
This is super simple, just use dir(
object)
This will return a list of every available function and attribute of the object.
Here is the official microsoft VM images for doing IE 6, 7, 8 and 9 testing: http://www.microsoft.com/en-us/download/details.aspx?id=11575
Container(
width: 48.0,
height: 48.0,
decoration: new BoxDecoration(
shape: BoxShape.circle,
image: new DecorationImage(
fit: BoxFit.fill,
image: NetworkImage("path to your image")
)
)),
Yes. In Ruby the not equal to operator is:
!=
You can get a full list of ruby operators here: https://www.tutorialspoint.com/ruby/ruby_operators.htm.
If you use a TCPServer, UDPServer or their subclasses in the SocketServer module, you can set this class variable (before instanciating a server):
SocketServer.TCPServer.allow_reuse_address = True
(via SocketServer.ThreadingTCPServer - Cannot bind to address after program restart )
This causes the init (constructor) to:
if self.allow_reuse_address:
self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
One possible way is to do something like this:
public class MyThread extends Thread {
@Override
public void run() {
while (!this.isInterrupted()) {
//
}
}
}
And when you want to stop your thread, just call a method interrupt():
myThread.interrupt();
Of course, this won't stop thread immediately, but in the following iteration of the loop above. In the case of downloading, you need to write a non-blocking code. It means, that you will attempt to read new data from the socket only for a limited amount of time. If there are no data available, it will just continue. It may be done using this method from the class Socket:
mySocket.setSoTimeout(50);
In this case, timeout is set up to 50 ms. After this time has gone and no data was read, it throws an SocketTimeoutException. This way, you may write iterative and non-blocking thread, which may be killed using the construction above.
It's not possible to kill thread in any other way and you've to implement such a behavior yourself. In past, Thread had some method (not sure if kill() or stop()) for this, but it's deprecated now. My experience is, that some implementations of JVM doesn't even contain that method currently.
You can set color programmatically.
private static void setMenuTextColor(final Context context, final Toolbar toolbar, final int menuResId, final int colorRes) {
toolbar.post(new Runnable() {
@Override
public void run() {
View settingsMenuItem = toolbar.findViewById(menuResId);
if (settingsMenuItem instanceof TextView) {
if (DEBUG) {
Log.i(TAG, "setMenuTextColor textview");
}
TextView tv = (TextView) settingsMenuItem;
tv.setTextColor(ContextCompat.getColor(context, colorRes));
} else { // you can ignore this branch, because usually there is not the situation
Menu menu = toolbar.getMenu();
MenuItem item = menu.findItem(menuResId);
SpannableString s = new SpannableString(item.getTitle());
s.setSpan(new ForegroundColorSpan(ContextCompat.getColor(context, colorRes)), 0, s.length(), 0);
item.setTitle(s);
}
}
});
}
A simpler solution would be to use sessionStorage
, in this case:
var myVariable = "Hello World";
sessionStorage['myvariable'] = myVariable;
var readValue = sessionStorage['myvariable'];
console.log(readValue);
However, keep in mind that sessionStorage
saves everything as a string, so when working with arrays / objects, you can use JSON to store them:
var myVariable = {a:[1,2,3,4], b:"some text"};
sessionStorage['myvariable'] = JSON.stringify(myVariable);
var readValue = JSON.parse(sessionStorage['myvariable']);
A page session lasts for as long as the browser is open and survives over page reloads and restores. Opening a page in a new tab or window will cause a new session to be initiated.
So, when you close the page / tab, the data is lost.
You should try this syntax - assuming you want to have @OrderID
as a parameter for your stored procedure:
CREATE PROCEDURE dbo.YourStoredProcNameHere
@OrderID INT
AS
BEGIN
DECLARE @OrderItemID AS INT
DECLARE @AppointmentID AS INT
DECLARE @PurchaseOrderID AS INT
DECLARE @PurchaseOrderItemID AS INT
DECLARE @SalesOrderID AS INT
DECLARE @SalesOrderItemID AS INT
SELECT @OrderItemID = OrderItemID
FROM [OrderItem]
WHERE OrderID = @OrderID
SELECT @AppointmentID = AppoinmentID
FROM [Appointment]
WHERE OrderID = @OrderID
SELECT @PurchaseOrderID = PurchaseOrderID
FROM [PurchaseOrder]
WHERE OrderID = @OrderID
END
OF course, that only works if you're returning exactly one value (not multiple values!)
If you want to selected value on drop-down text bases so you should use below changes: Here below is example and country name is dynamic:
<select id="selectcountry">
<option value="1">India</option>
<option value="2">Ireland</option>
</select>
<script>
var country_name ='India'
$('#selectcountry').find('option:contains("' + country_name + '")').attr('selected', 'selected');
</script>
img
in the center of its parent.img
is an inline element, text-center
aligns inline elements in the center of its container should the container be a block
element. <link href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.1.1/css/bootstrap.css" rel="stylesheet"/>_x000D_
<div class="container mt-5">_x000D_
<div class="row">_x000D_
<div class="col text-center">_x000D_
<img src="https://upload.wikimedia.org/wikipedia/en/8/80/Wikipedia-logo-v2.svg" alt="" class="img-fluid">_x000D_
</div>_x000D_
</div>_x000D_
</div>
_x000D_
mx-auto
centers block
elements. In order to so, change display
of the img from inline
to block
with d-block
class. <link href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.1.1/css/bootstrap.css" rel="stylesheet"/>_x000D_
<div class="container mt-5">_x000D_
<div class="row">_x000D_
<div class="col">_x000D_
<img src="https://upload.wikimedia.org/wikipedia/en/8/80/Wikipedia-logo-v2.svg" alt="" class="img-fluid d-block mx-auto">_x000D_
</div>_x000D_
</div>_x000D_
</div>
_x000D_
d-flex
and justify-content-center
on its parent. <link href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.1.1/css/bootstrap.css" rel="stylesheet"/>_x000D_
<div class="container mt-5">_x000D_
<div class="row">_x000D_
<div class="col d-flex justify-content-center">_x000D_
<img src="https://upload.wikimedia.org/wikipedia/en/8/80/Wikipedia-logo-v2.svg" alt="" class="img-fluid">_x000D_
</div>_x000D_
</div>_x000D_
</div>
_x000D_
Database Workbench can made it too
http://www.upscene.com/products.dbw.index.php
Cross database development
Use the Schema Compare and Migration Tools to compare testing and deployed databases, migrate existing databases to different database systems.
you can also made it with database Comparer
http://www.clevercomponents.com/products/dbcomparer/dbcomparer.asp
I use it for Firebird and it works well.
I was facing the same issue while i was using "jdk-10.0.1_windows-x64_bin" and eclipse-jee-oxygen-3a-win32-x86_64 on Windows 64 bit Operating System.
But Finally i resolved this issue by changing my jdk to "jdk-8u172-windows-x64", Now its working fine. @Thanks
Try from tensorflow.python import keras
with this, you can easily change keras dependent code to tensorflow in one line change.
You can also try from tensorflow.contrib import keras
. This works on tensorflow 1.3
Edited: for tensorflow 1.10 and above you can use import tensorflow.keras as keras
to get keras in tensorflow.
Yes, add the -Force
parameter.
copy-item $from $to -Recurse -Force
As of current edited version of the post, you call setInterval
at each change's end, adding a new "changer" with each new iterration. That means after first run, there's one of them ticking in memory, after 100 runs, 100 different changers change image 100 times every second, completely destroying performance and producing confusing results.
You only need to "prime" setInterval
once. Remove it from function and place it inside onload
instead of direct function call.
import inspect
def func(a,b,c=5):
pass
inspect.getargspec(func) # inspect.signature(func) in Python 3
(['a', 'b', 'c'], None, None, (5,))
String path = Environment.getExternalStorageDirectory()+ "/Images/test.jpg";
File imgFile = new File(path);
if(imgFile.exists())
{
Bitmap myBitmap = BitmapFactory.decodeFile(imgFile.getAbsolutePath());
ImageView imageView=(ImageView)findViewById(R.id.imageView);
imageView.setImageBitmap(myBitmap);
}
The next link will bring you to a great tutorial, that helped me a lot!
I nearly used everything in that article to create the SQLite database for my own C# Application.
Don't forget to download the SQLite.dll, and add it as a reference to your project. This can be done using NuGet and by adding the dll manually.
After you added the reference, refer to the dll from your code using the following line on top of your class:
using System.Data.SQLite;
You can find the dll's here:
You can find the NuGet way here:
Up next is the create script. Creating a database file:
SQLiteConnection.CreateFile("MyDatabase.sqlite");
SQLiteConnection m_dbConnection = new SQLiteConnection("Data Source=MyDatabase.sqlite;Version=3;");
m_dbConnection.Open();
string sql = "create table highscores (name varchar(20), score int)";
SQLiteCommand command = new SQLiteCommand(sql, m_dbConnection);
command.ExecuteNonQuery();
sql = "insert into highscores (name, score) values ('Me', 9001)";
command = new SQLiteCommand(sql, m_dbConnection);
command.ExecuteNonQuery();
m_dbConnection.Close();
After you created a create script in C#, I think you might want to add rollback transactions, it is safer and it will keep your database from failing, because the data will be committed at the end in one big piece as an atomic operation to the database and not in little pieces, where it could fail at 5th of 10 queries for example.
Example on how to use transactions:
using (TransactionScope tran = new TransactionScope())
{
//Insert create script here.
//Indicates that creating the SQLiteDatabase went succesfully, so the database can be committed.
tran.Complete();
}
Answer 1:
To convert a string to a sequence of bytes in either Python 2 or Python 3, you use the string's encode
method. If you don't supply an encoding parameter 'ascii'
is used, which will always be good enough for numeric digits.
s = str(n).encode()
In Python 2 str(n)
already produces bytes; the encode
will do a double conversion as this string is implicitly converted to Unicode and back again to bytes. It's unnecessary work, but it's harmless and is completely compatible with Python 3.
Above is the answer to the question that was actually asked, which was to produce a string of ASCII bytes in human-readable form. But since people keep coming here trying to get the answer to a different question, I'll answer that question too. If you want to convert 10
to b'10'
use the answer above, but if you want to convert 10
to b'\x0a\x00\x00\x00'
then keep reading.
The struct
module was specifically provided for converting between various types and their binary representation as a sequence of bytes. The conversion from a type to bytes is done with struct.pack
. There's a format parameter fmt
that determines which conversion it should perform. For a 4-byte integer, that would be i
for signed numbers or I
for unsigned numbers. For more possibilities see the format character table, and see the byte order, size, and alignment table for options when the output is more than a single byte.
import struct
s = struct.pack('<i', 5) # b'\x05\x00\x00\x00'
Swift 5
import SystemConfiguration
protocol Utilities {}
extension NSObject: Utilities {
enum ReachabilityStatus {
case notReachable
case reachableViaWWAN
case reachableViaWiFi
}
var currentReachabilityStatus: ReachabilityStatus {
var zeroAddress = sockaddr_in()
zeroAddress.sin_len = UInt8(MemoryLayout<sockaddr_in>.size)
zeroAddress.sin_family = sa_family_t(AF_INET)
guard let defaultRouteReachability = withUnsafePointer(to: &zeroAddress, {
$0.withMemoryRebound(to: sockaddr.self, capacity: 1) {
SCNetworkReachabilityCreateWithAddress(nil, $0)
}
}) else {
return .notReachable
}
var flags: SCNetworkReachabilityFlags = []
if !SCNetworkReachabilityGetFlags(defaultRouteReachability, &flags) {
return .notReachable
}
if flags.contains(.reachable) == false {
// The target host is not reachable.
return .notReachable
}
else if flags.contains(.isWWAN) == true {
// WWAN connections are OK if the calling application is using the CFNetwork APIs.
return .reachableViaWWAN
}
else if flags.contains(.connectionRequired) == false {
// If the target host is reachable and no connection is required then we'll assume that you're on Wi-Fi...
return .reachableViaWiFi
}
else if (flags.contains(.connectionOnDemand) == true || flags.contains(.connectionOnTraffic) == true) && flags.contains(.interventionRequired) == false {
// The connection is on-demand (or on-traffic) if the calling application is using the CFSocketStream or higher APIs and no [user] intervention is needed
return .reachableViaWiFi
}
else {
return .notReachable
}
}
}
In any method use the below condition
if currentReachabilityStatus == .notReachable {
// Network Unavailable
} else {
// Network Available
}
Since struct instances are allocated on stack, and class instances are allocated on heap, structs can sometimes be drastically faster.
However, you should always measure it yourself and decide based on your unique use case.
Consider the following example, which demonstrates 2 strategies of wrapping Int
data type using struct
and class
. I am using 10 repeated values are to better reflect real world, where you have multiple fields.
class Int10Class {
let value1, value2, value3, value4, value5, value6, value7, value8, value9, value10: Int
init(_ val: Int) {
self.value1 = val
self.value2 = val
self.value3 = val
self.value4 = val
self.value5 = val
self.value6 = val
self.value7 = val
self.value8 = val
self.value9 = val
self.value10 = val
}
}
struct Int10Struct {
let value1, value2, value3, value4, value5, value6, value7, value8, value9, value10: Int
init(_ val: Int) {
self.value1 = val
self.value2 = val
self.value3 = val
self.value4 = val
self.value5 = val
self.value6 = val
self.value7 = val
self.value8 = val
self.value9 = val
self.value10 = val
}
}
func + (x: Int10Class, y: Int10Class) -> Int10Class {
return IntClass(x.value + y.value)
}
func + (x: Int10Struct, y: Int10Struct) -> Int10Struct {
return IntStruct(x.value + y.value)
}
Performance is measured using
// Measure Int10Class
measure("class (10 fields)") {
var x = Int10Class(0)
for _ in 1...10000000 {
x = x + Int10Class(1)
}
}
// Measure Int10Struct
measure("struct (10 fields)") {
var y = Int10Struct(0)
for _ in 1...10000000 {
y = y + Int10Struct(1)
}
}
func measure(name: String, @noescape block: () -> ()) {
let t0 = CACurrentMediaTime()
block()
let dt = CACurrentMediaTime() - t0
print("\(name) -> \(dt)")
}
Code can be found at https://github.com/knguyen2708/StructVsClassPerformance
UPDATE (27 Mar 2018):
As of Swift 4.0, Xcode 9.2, running Release build on iPhone 6S, iOS 11.2.6, Swift Compiler setting is -O -whole-module-optimization
:
class
version took 2.06 secondsstruct
version took 4.17e-08 seconds (50,000,000 times faster)(I no longer average multiple runs, as variances are very small, under 5%)
Note: the difference is a lot less dramatic without whole module optimization. I'd be glad if someone can point out what the flag actually does.
UPDATE (7 May 2016):
As of Swift 2.2.1, Xcode 7.3, running Release build on iPhone 6S, iOS 9.3.1, averaged over 5 runs, Swift Compiler setting is -O -whole-module-optimization
:
class
version took 2.159942142sstruct
version took 5.83E-08s (37,000,000 times faster)Note: as someone mentioned that in real-world scenarios, there will be likely more than 1 field in a struct, I have added tests for structs/classes with 10 fields instead of 1. Surprisingly, results don't vary much.
ORIGINAL RESULTS (1 June 2014):
(Ran on struct/class with 1 field, not 10)
As of Swift 1.2, Xcode 6.3.2, running Release build on iPhone 5S, iOS 8.3, averaged over 5 runs
class
version took 9.788332333sstruct
version took 0.010532942s (900 times faster)OLD RESULTS (from unknown time)
(Ran on struct/class with 1 field, not 10)
With release build on my MacBook Pro:
class
version took 1.10082 secstruct
version took 0.02324 sec (50 times faster)Android's MVC pattern is (kind-of) implemented with their Adapter classes. They replace a controller with an "adapter." The description for the adapter states:
An Adapter object acts as a bridge between an AdapterView and the underlying data for that view.
I'm just looking into this for an Android application that reads from a database, so I don't know how well it works yet. However, it seems a little like Qt's Model-View-Delegate architecture, which they claim is a step up from a traditional MVC pattern. At least on the PC, Qt's pattern works fairly well.
You can use a .Net environment Visual studio, Take a look at the differences with the PC version.
A lighter editor would be Visual Code
Alternatives :
Installing the Mono Project runtime . It allows you to re-compile the code and run it on a Mac, but this requires various alterations to the codebase, as the fuller .Net Framework is not available. (Also, WPF applications aren't supported here either.)
Virtual machine (VMWare Fusion perhaps)
Update your codebase to .Net Core, (before choosing this option take a look at this migration process)
.Net Core 3.1 is an open-source, free and available on Window, MacOs and Linux
As of September 14, a release candidate 1 of .Net Core 5.0 has been deployed on Window, MacOs and Linux.
[1] : Release candidate (RC) : releases providing early access to complete features. These releases are supported for production use when they have a go-live license
"TypeScript Fundamentals" -- a Pluralsight video-course by Dan Wahlin and John Papa is a really good, presently (March 25, 2016) updated to reflect TypeScript 1.8, introduction to Typescript.
For me the really good features, beside the nice possibilities for intellisense, are the classes, interfaces, modules, the ease of implementing AMD, and the possibility to use the Visual Studio Typescript debugger when invoked with IE.
To summarize: If used as intended, Typescript can make JavaScript programming more reliable, and easier. It can increase the productivity of the JavaScript programmer significantly over the full SDLC.
This is an older question, but I found it yesterday while struggling with getting the MySQL Connector reference working properly on examples I'd found on the web. I'm working with VS 2010 on Win7 64 bit but have to work with .NET 3.5.
As others have stated, you need to download the .Net & Mono versions (I don't know why this is true, but it's what I've found works). The link to the connectors is given above in the earlier answers.
TooTallNate has a simple client side https://github.com/TooTallNate/Java-WebSocket
Just add the java_websocket.jar in the dist folder into your project.
import org.java_websocket.client.WebSocketClient;
import org.java_websocket.drafts.Draft_10;
import org.java_websocket.handshake.ServerHandshake;
import org.json.JSONException;
import org.json.JSONObject;
WebSocketClient mWs = new WebSocketClient( new URI( "ws://socket.example.com:1234" ), new Draft_10() )
{
@Override
public void onMessage( String message ) {
JSONObject obj = new JSONObject(message);
String channel = obj.getString("channel");
}
@Override
public void onOpen( ServerHandshake handshake ) {
System.out.println( "opened connection" );
}
@Override
public void onClose( int code, String reason, boolean remote ) {
System.out.println( "closed connection" );
}
@Override
public void onError( Exception ex ) {
ex.printStackTrace();
}
};
//open websocket
mWs.connect();
JSONObject obj = new JSONObject();
obj.put("event", "addChannel");
obj.put("channel", "ok_btccny_ticker");
String message = obj.toString();
//send message
mWs.send(message);
// and to close websocket
mWs.close();
with out changing the css file you can also change the calendar size by putting the the following code in to ur <head>.....</head> tag:
<head>
<meta charset="utf-8" />
<title>jQuery UI Datepicker - Icon trigger</title>
<link rel="stylesheet" href="http://code.jquery.com/ui/1.10.2/themes/smoothness/jquery-ui.css" />
<script src="http://code.jquery.com/jquery-1.9.1.js"></script>
<script src="http://code.jquery.com/ui/1.10.2/jquery-ui.js"></script>
<link rel="stylesheet" href="/resources/demos/style.css" />
<style type="text/css">
.ui-widget { font-family: Lucida Grande, Lucida Sans, Arial, sans-serif; font-size: 0.6em; }
</style>
<script>
$(function() {
$( "#datepicker" ).datepicker({
//font-size:10px;
//numberOfMonths: 3,
showButtonPanel: true,
showOn: 'button',
buttonImage: "images/calendar1.gif",
buttonImageOnly: true
});
});
</script>
</head>
C++ treats variables of user-defined types with value semantics. This means that objects are implicitly copied in various contexts, and we should understand what "copying an object" actually means.
Let us consider a simple example:
class person
{
std::string name;
int age;
public:
person(const std::string& name, int age) : name(name), age(age)
{
}
};
int main()
{
person a("Bjarne Stroustrup", 60);
person b(a); // What happens here?
b = a; // And here?
}
(If you are puzzled by the name(name), age(age)
part,
this is called a member initializer list.)
What does it mean to copy a person
object?
The main
function shows two distinct copying scenarios.
The initialization person b(a);
is performed by the copy constructor.
Its job is to construct a fresh object based on the state of an existing object.
The assignment b = a
is performed by the copy assignment operator.
Its job is generally a little more complicated,
because the target object is already in some valid state that needs to be dealt with.
Since we declared neither the copy constructor nor the assignment operator (nor the destructor) ourselves, these are implicitly defined for us. Quote from the standard:
The [...] copy constructor and copy assignment operator, [...] and destructor are special member functions. [ Note: The implementation will implicitly declare these member functions for some class types when the program does not explicitly declare them. The implementation will implicitly define them if they are used. [...] end note ] [n3126.pdf section 12 §1]
By default, copying an object means copying its members:
The implicitly-defined copy constructor for a non-union class X performs a memberwise copy of its subobjects. [n3126.pdf section 12.8 §16]
The implicitly-defined copy assignment operator for a non-union class X performs memberwise copy assignment of its subobjects. [n3126.pdf section 12.8 §30]
The implicitly-defined special member functions for person
look like this:
// 1. copy constructor
person(const person& that) : name(that.name), age(that.age)
{
}
// 2. copy assignment operator
person& operator=(const person& that)
{
name = that.name;
age = that.age;
return *this;
}
// 3. destructor
~person()
{
}
Memberwise copying is exactly what we want in this case:
name
and age
are copied, so we get a self-contained, independent person
object.
The implicitly-defined destructor is always empty.
This is also fine in this case since we did not acquire any resources in the constructor.
The members' destructors are implicitly called after the person
destructor is finished:
After executing the body of the destructor and destroying any automatic objects allocated within the body, a destructor for class X calls the destructors for X's direct [...] members [n3126.pdf 12.4 §6]
So when should we declare those special member functions explicitly? When our class manages a resource, that is, when an object of the class is responsible for that resource. That usually means the resource is acquired in the constructor (or passed into the constructor) and released in the destructor.
Let us go back in time to pre-standard C++.
There was no such thing as std::string
, and programmers were in love with pointers.
The person
class might have looked like this:
class person
{
char* name;
int age;
public:
// the constructor acquires a resource:
// in this case, dynamic memory obtained via new[]
person(const char* the_name, int the_age)
{
name = new char[strlen(the_name) + 1];
strcpy(name, the_name);
age = the_age;
}
// the destructor must release this resource via delete[]
~person()
{
delete[] name;
}
};
Even today, people still write classes in this style and get into trouble:
"I pushed a person into a vector and now I get crazy memory errors!"
Remember that by default, copying an object means copying its members,
but copying the name
member merely copies a pointer, not the character array it points to!
This has several unpleasant effects:
a
can be observed via b
.b
is destroyed, a.name
is a dangling pointer.a
is destroyed, deleting the dangling pointer yields undefined behavior.name
pointed to before the assignment,
sooner or later you will get memory leaks all over the place.Since memberwise copying does not have the desired effect, we must define the copy constructor and the copy assignment operator explicitly to make deep copies of the character array:
// 1. copy constructor
person(const person& that)
{
name = new char[strlen(that.name) + 1];
strcpy(name, that.name);
age = that.age;
}
// 2. copy assignment operator
person& operator=(const person& that)
{
if (this != &that)
{
delete[] name;
// This is a dangerous point in the flow of execution!
// We have temporarily invalidated the class invariants,
// and the next statement might throw an exception,
// leaving the object in an invalid state :(
name = new char[strlen(that.name) + 1];
strcpy(name, that.name);
age = that.age;
}
return *this;
}
Note the difference between initialization and assignment:
we must tear down the old state before assigning to name
to prevent memory leaks.
Also, we have to protect against self-assignment of the form x = x
.
Without that check, delete[] name
would delete the array containing the source string,
because when you write x = x
, both this->name
and that.name
contain the same pointer.
Unfortunately, this solution will fail if new char[...]
throws an exception due to memory exhaustion.
One possible solution is to introduce a local variable and reorder the statements:
// 2. copy assignment operator
person& operator=(const person& that)
{
char* local_name = new char[strlen(that.name) + 1];
// If the above statement throws,
// the object is still in the same state as before.
// None of the following statements will throw an exception :)
strcpy(local_name, that.name);
delete[] name;
name = local_name;
age = that.age;
return *this;
}
This also takes care of self-assignment without an explicit check. An even more robust solution to this problem is the copy-and-swap idiom, but I will not go into the details of exception safety here. I only mentioned exceptions to make the following point: Writing classes that manage resources is hard.
Some resources cannot or should not be copied, such as file handles or mutexes.
In that case, simply declare the copy constructor and copy assignment operator as private
without giving a definition:
private:
person(const person& that);
person& operator=(const person& that);
Alternatively, you can inherit from boost::noncopyable
or declare them as deleted (in C++11 and above):
person(const person& that) = delete;
person& operator=(const person& that) = delete;
Sometimes you need to implement a class that manages a resource. (Never manage multiple resources in a single class, this will only lead to pain.) In that case, remember the rule of three:
If you need to explicitly declare either the destructor, copy constructor or copy assignment operator yourself, you probably need to explicitly declare all three of them.
(Unfortunately, this "rule" is not enforced by the C++ standard or any compiler I am aware of.)
From C++11 on, an object has 2 extra special member functions: the move constructor and move assignment. The rule of five states to implement these functions as well.
An example with the signatures:
class person
{
std::string name;
int age;
public:
person(const std::string& name, int age); // Ctor
person(const person &) = default; // 1/5: Copy Ctor
person(person &&) noexcept = default; // 4/5: Move Ctor
person& operator=(const person &) = default; // 2/5: Copy Assignment
person& operator=(person &&) noexcept = default; // 5/5: Move Assignment
~person() noexcept = default; // 3/5: Dtor
};
The rule of 3/5 is also referred to as the rule of 0/3/5. The zero part of the rule states that you are allowed to not write any of the special member functions when creating your class.
Most of the time, you do not need to manage a resource yourself,
because an existing class such as std::string
already does it for you.
Just compare the simple code using a std::string
member
to the convoluted and error-prone alternative using a char*
and you should be convinced.
As long as you stay away from raw pointer members, the rule of three is unlikely to concern your own code.
Add this extension
extension UINavigationBar {
func changeFont() {
self.titleTextAttributes = [NSAttributedStringKey.foregroundColor: UIColor.white, NSAttributedStringKey.font: UIFont(name:"Poppins-Medium", size: 17)!]
}
}
Add the following line in viewDidLoad()
self.navigationController?.navigationBar.changeFont()
There is no need to learn C before learning C++.
They are different languages. It is a common misconception that C++ is in some way dependent on C and not a fully specified language on its own.
Just because C++ shares a lot of the same syntax and a lot of the same semantics, does not mean you need to learn C first.
If you learn C++ you will eventually learn most of C with some differences between the languages that you will learn over time. In fact its a very hard thing to write proper C++ because intermediate C++ programmers tend to write C/C++.That is true whether or not you started with C or started with C++.
If you know C first, then that is good plus to learning C++. You will start with knowing a chunk of the language. If you do not know C first then there is no point focusing on a different language. There are plenty of good books and tutorials available that start you from knowing nothing and will cover anything you would learn from C which applies to C++ as well.
for (var i in a) {
console.log(a[i],i)
}
Override the controllers Json/JsonResult to return JSON.Net:
Whenever you use
export someobject
and someobject is
{
"prop1":"Property1",
"prop2":"Property2",
}
the above you can import anywhere using import
or module.js
and there you can use someobject. This is not a restriction that someobject will be an object only it can be a function too, a class or an object.
When you say
new Object()
like you said
new Vue({
el: '#app',
data: []
)}
Here you are initiating an object of class Vue.
I hope my answer explains your query in general and more explicitly.
from php you can invoke jquery like this but my 2nd method is much cleaner and better for php
if($switchView) :?>
<script>$('.container').hide();</script>
<script>$('.confirm').show();</script>
<?php endif;
another way is to initiate your class and dynamically invoke the condition like this
$registerForm ='block';
then in your html use this
<div class="col" style="display: <?= $registerForm?>">
now you can play with the view with if and else easily without having a messed code example
if($condition) registerForm = 'none';
Make sure you use 'block' to show and 'none' to hide. This is far the easiest way with php
Make your object something like
public class MyObject : IComparable
{
public string a;
public string b;
virtual public int CompareTo(object obj)
{
if (obj is MyObject)
{
var compareObj = (MyObject)obj;
if (this.a.CompareTo(compareObj.a) == 0)
{
// compare second value
return this.b.CompareTo(compareObj.b);
}
return this.a.CompareTo(compareObj.b);
}
else
{
throw new ArgumentException("Object is not a MyObject ");
}
}
}
also note that the returns for CompareTo :
http://msdn.microsoft.com/en-us/library/system.icomparable.compareto.aspx
Then, if you have a List of MyObject, call .Sort() ie
var objList = new List<MyObject>();
objList.Sort();
If you have PowerShell 5.0 or higher (pre-installed with Windows 10 and Windows Server 2016):
powershell Expand-Archive your.zip -DestinationPath your_destination
I found that I can do some basic logic by running something like:
A=true
B=true
if ($A && $B); then
C=true
else
C=false
fi
echo $C
In case you are still looking for an alternate solution:
ls | grep -i -e '\\.tcl$' -e '\\.exe$' -e '\\.mp4$'
Feel free to add more -e flags if needed.
Steps to resolve this:
Android basically works on two thread types namely UI thread and background thread. According to android documentation -
Do not access the Android UI toolkit from outside the UI thread to fix this problem, Android offers several ways to access the UI thread from other threads. Here is a list of methods that can help:
Activity.runOnUiThread(Runnable)
View.post(Runnable)
View.postDelayed(Runnable, long)
Now there are various methods to solve this problem. I will explain it by code sample
runOnUiThread
new Thread()
{
public void run()
{
myactivity.this.runOnUiThread(new runnable()
{
public void run()
{
//Do your UI operations like dialog opening or Toast here
}
});
}
}.start();
LOOPER
Class used to run a message loop for a thread. Threads by default do not have a message loop associated with them; to create one, call prepare() in the thread that is to run the loop, and then loop() to have it process messages until the loop is stopped.
class LooperThread extends Thread {
public Handler mHandler;
public void run() {
Looper.prepare();
mHandler = new Handler() {
public void handleMessage(Message msg) {
// process incoming messages here
}
};
Looper.loop();
}
AsyncTask
AsyncTask allows you to perform asynchronous work on your user interface. It performs the blocking operations in a worker thread and then publishes the results on the UI thread, without requiring you to handle threads and/or handlers yourself.
public void onClick(View v) {
new CustomTask().execute((Void[])null);
}
private class CustomTask extends AsyncTask<Void, Void, Void> {
protected Void doInBackground(Void... param) {
//Do some work
return null;
}
protected void onPostExecute(Void param) {
//Print Toast or open dialog
}
}
Handler
A Handler allows you to send and process Message and Runnable objects associated with a thread's MessageQueue.
Message msg = new Message();
new Thread()
{
public void run()
{
msg.arg1=1;
handler.sendMessage(msg);
}
}.start();
Handler handler = new Handler(new Handler.Callback() {
@Override
public boolean handleMessage(Message msg) {
if(msg.arg1==1)
{
//Print Toast or open dialog
}
return false;
}
});
Default c++ mechanism for file IO is called streams.
Streams can be of three flavors: input, output and inputoutput.
Input streams act like sources of data. To read data from an input stream you use >>
operator:
istream >> my_variable; //This code will read a value from stream into your variable.
Operator >>
acts different for different types. If in the example above my_variable
was an int, then a number will be read from the strem, if my_variable
was a string, then a word would be read, etc.
You can read more then one value from the stream by writing istream >> a >> b >> c;
where a, b and c would be your variables.
Output streams act like sink to which you can write your data. To write your data to a stream, use <<
operator.
ostream << my_variable; //This code will write a value from your variable into stream.
As with input streams, you can write several values to the stream by writing something like this:
ostream << a << b << c;
Obviously inputoutput streams can act as both.
In your code sample you use cout
and cin
stream objects.
cout
stands for console-output and cin for console-input
. Those are predefined streams for interacting with default console.
To interact with files, you need to use ifstream
and ofstream
types.
Similar to cin
and cout
, ifstream
stands for input-file-stream
and ofstream
stands for output-file-stream
.
Your code might look like this:
#include <iostream>
#include <fstream>
using namespace std;
int start()
{
cout << "Welcome...";
// do fancy stuff
return 0;
}
int main ()
{
string usreq, usr, yn, usrenter;
cout << "Is this your first time using TEST" << endl;
cin >> yn;
if (yn == "y")
{
ifstream iusrfile;
ofstream ousrfile;
iusrfile.open("usrfile.txt");
iusrfile >> usr;
cout << iusrfile; // I'm not sure what are you trying to do here, perhaps print iusrfile contents?
iusrfile.close();
cout << "Please type your Username. \n";
cin >> usrenter;
if (usrenter == usr)
{
start ();
}
}
else
{
cout << "THAT IS NOT A REGISTERED USERNAME.";
}
return 0;
}
For further reading you might want to look at c++ I/O reference
if you want to get "terse" :)
List<string>GlobalStrings = new List<string>();
for(int x=1; x<10; x++) GlobalStrings.AddRange(new List<string> { "some value", "another value"});
As an extension method.
public static class StringBuilderExtension
{
public static string SubsituteString(this string OriginalStr, int index, int length, string SubsituteStr)
{
return new StringBuilder(OriginalStr).Remove(index, length).Insert(index, SubsituteStr).ToString();
}
}