HashMap has initial capacity and HashMap's performance very very depends on hashCode that produce underlying objects.
Try to tweak both.
The problem is related to permission. Copy following code into onCreate() method. The issue will get solved.
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (checkSelfPermission(Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
requestPermissions(new String[] {Manifest.permission.CAMERA}, 1);
}
}
After that wait for the user action and handle his decision.
@Override
public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
switch (requestCode) {
case CAMERA_PERMISSION_REQUEST_CODE:
// If request is cancelled, the result arrays are empty.
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
//Start your camera handling here
} else {
AppUtils.showUserMessage("You declined to allow the app to access your camera", this);
}
}
}
As Aaron mentioned above, some services do not accept SERVICE_ACCEPT_STOP
messages, by the time it was developed. And that is hard coded into the executable. Period. A workaroud would be not to have it started, and as you cannot change its properties, forcibly do the following:
If you cannot change the entry, right-click on your service name on the left pane, select 'Permissions', check that 'Everyone' has full access and try step 4 again.
Don't forget to disable safe boot from msconfig again, and reboot !
USE [<dbname>]
GO
sp_changedbowner '<user>' -- you can use 'sa' as a quick fix in databases with SQL authentication
Disable back buttton in android
@Override
public void onBackPressed() {
return;
}
**Filter by name, age ** also, you can use the map function
difference between map and filter
1. map - The map() method creates a new array with the results of calling a function for every array element. The map method allows items in an array to be manipulated to the user’s preference, returning the conclusion of the chosen manipulation in an entirely new array. For example, consider the following array:
2. filter - The filter() method creates an array filled with all array elements that pass a test implemented by the provided function. The filter method is well suited for particular instances where the user must identify certain items in an array that share a common characteristic. For example, consider the following array:
const users = [
{ name: "john", age: 23 },
{ name: "john", age:43 },
{ name: "jim", age: 101 },
{ name: "bob", age: 67 }
];
const user = _.filter(users, {name: 'jim', age: 101});
console.log(user);
You can resolve the error by providing the column names you are affecting.
> INSERT INTO table_name (column1,column2,column3)
`VALUES(50,'Jon Snow','Eye');`
please note that the semi colon should be added only after the statement providing values
goto,
Safari -> Preferences -> Advanced
then at the bottom tick Show Develop Menu in menu bar
then in the Develop Menu tick Disable Cross-Origin Restrictions
Crude, but it works on our system:
<div class="block-share spread-share p-t-md">
<a href="http://www.facebook.com/share.php?u=http://www.voteleavetakecontrol.org/our_affiliates&title=Farmers+for+Britain+have+made+the+sensible+decision+to+Vote+Leave.+Be+part+of+a+better+future+for+us+all.+Please+share!"
target="_blank">
<button class="btn btn-social btn-facebook">
<span class="icon icon-facebook">
</span>
Share on Facebook
</button>
</a>
<a href="https://www.facebook.com/FarmersForBritain" target="_blank">
<button class="btn btn-social btn-facebook">
<span class="icon icon-facebook">
</span>
Like on Facebook
</button>
</a>
</div>
According to the error message, you declared myLoc
as a pointer to an NSInteger (NSInteger *myLoc
) rather than an actual NSInteger (NSInteger myLoc
). It needs to be the latter.
If you don't know the index of the element that you want to remove, and the element is conform the Equatable protocol, you can do:
animals.remove(at: animals.firstIndex(of: "dogs")!)
See Equatable protocol answer:How do I do indexOfObject or a proper containsObject
Extension to @Stevoisiak's answer and dealing with non-Latin characters. Only one way will display the non-Latin characters to you. The one method is different on both Python 3 and Python 2.
Input
xml = ElementTree.fromstring('<Person Name="???" />')
xml = ElementTree.Element("Person", Name="???") # Read Note about Python 2
NOTE: In Python 2, when calling the
toString(...)
code, assigningxml
withElementTree.Element("Person", Name="???")
will raise an error...
UnicodeDecodeError: 'ascii' codec can't decode byte 0xed in position 0: ordinal not in range(128)
Output
ElementTree.tostring(xml)
# Python 3 (???): b'<Person Name="크리스" />'
# Python 3 (John): b'<Person Name="John" />'
# Python 2 (???): <Person Name="크리스" />
# Python 2 (John): <Person Name="John" />
ElementTree.tostring(xml, encoding='unicode')
# Python 3 (???): <Person Name="???" /> <-------- Python 3
# Python 3 (John): <Person Name="John" />
# Python 2 (???): LookupError: unknown encoding: unicode
# Python 2 (John): LookupError: unknown encoding: unicode
ElementTree.tostring(xml, encoding='utf-8')
# Python 3 (???): b'<Person Name="\xed\x81\xac\xeb\xa6\xac\xec\x8a\xa4" />'
# Python 3 (John): b'<Person Name="John" />'
# Python 2 (???): <Person Name="???" /> <-------- Python 2
# Python 2 (John): <Person Name="John" />
ElementTree.tostring(xml).decode()
# Python 3 (???): <Person Name="크리스" />
# Python 3 (John): <Person Name="John" />
# Python 2 (???): <Person Name="크리스" />
# Python 2 (John): <Person Name="John" />
Does it mean that I'm blocking reading any input from the Server/Client for this socket for 2000 millisecond and after this time the socket is ready to read data?
No, it means that if no data arrives within 2000ms a SocketTimeoutException
will be thrown.
What does it mean timeout expire?
It means the 2000ms (in your case) elapses without any data arriving.
What is the option which must be enabled prior to blocking operation?
There isn't one that 'must be' enabled. If you mean 'may be enabled', this is one of them.
Infinite Timeout menas that the socket does't read anymore?
What a strange suggestion. It means that if no data ever arrives you will block in the read forever.
I found that using the http://pencil.evolus.vn/ together with the pencil-stencils from the http://code.google.com/p/android-ui-utils/ project works exceptionally well. Very simple to use, its very easy to mock up elaborate designs
HttpParams is deprecated in the new Apache HTTPClient library. Using the code provided by Laz leads to deprecation warnings.
I suggest to use RequestConfig instead on your HttpGet or HttpPost instance:
final RequestConfig params = RequestConfig.custom().setConnectTimeout(3000).setSocketTimeout(3000).build();
httpPost.setConfig(params);
We can call Controller method using Javascript / Jquery very easily as follows:
Suppose following is the Controller method to be called returning an array of some class objects. Let the class is 'A'
public JsonResult SubMenu_Click(string param1, string param2)
{
A[] arr = null;
try
{
Processing...
Get Result and fill arr.
}
catch { }
return Json(arr , JsonRequestBehavior.AllowGet);
}
Following is the complex type (class)
public class A
{
public string property1 {get ; set ;}
public string property2 {get ; set ;}
}
Now it was turn to call above controller method by JQUERY. Following is the Jquery function to call the controller method.
function callControllerMethod(value1 , value2) {
var strMethodUrl = '@Url.Action("SubMenu_Click", "Home")?param1=value1 ¶m2=value2'
$.getJSON(strMethodUrl, receieveResponse);
}
function receieveResponse(response) {
if (response != null) {
for (var i = 0; i < response.length; i++) {
alert(response[i].property1);
}
}
}
In the above Jquery function 'callControllerMethod' we develop controller method url and put that in a variable named 'strMehodUrl' and call getJSON method of Jquery API.
receieveResponse is the callback function receiving the response or return value of the controllers method.
Here we made use of JSON , since we can't make use of the C# class object
directly into the javascript function , so we converted the result (arr) in controller method into JSON object as follows:
Json(arr , JsonRequestBehavior.AllowGet);
and returned that Json object.
Now in callback function of the Javascript / JQuery we can make use of this resultant JSON object and work accordingly to show response data on UI.
For more detaill click here
If you are selecting only one cell then get selected cell content like this
var cellInfo = dataGrid1.SelectedCells[0];
var content = cellInfo.Column.GetCellContent(cellInfo.Item);
Here content will be your selected cells value
And if you are selecting multiple cells then you can do it like this
var cellInfos = dataGrid1.SelectedCells;
var list1 = new List<string>();
foreach (DataGridCellInfo cellInfo in cellInfos)
{
if (cellInfo.IsValid)
{
//GetCellContent returns FrameworkElement
var content= cellInfo.Column.GetCellContent(cellInfo.Item);
//Need to add the extra lines of code below to get desired output
//get the datacontext from FrameworkElement and typecast to DataRowView
var row = (DataRowView)content.DataContext;
//ItemArray returns an object array with single element
object[] obj = row.Row.ItemArray;
//store the obj array in a list or Arraylist for later use
list1.Add(obj[0].ToString());
}
}
Transport security is available on iOS 9.0 or later. You may have this warning when trying to call a WS inside your application:
Application Transport Security has blocked a cleartext HTTP (http://) resource load since it is insecure. Temporary exceptions can be configured via your app's Info.plist file.
Adding the following to your Info.plist will disable ATS:
<key>NSAppTransportSecurity</key>
<dict>
<key>NSAllowsArbitraryLoads</key><true/>
</dict>
The below code helps me to return a JSON object for JavaScript on the front end
My template code
template_file.json
{
"name": "{{name}}"
}
Python backed code
def download_json(request):
print("Downloading JSON")
# Response render a template as JSON object
return HttpResponse(render_to_response("template_file.json",dict(name="Alex Vera")),content_type="application/json")
File url.py
url(r'^download_as_json/$', views.download_json, name='download_json-url')
jQuery code for the front end
$.ajax({
url:'{% url 'download_json-url' %}'
}).done(function(data){
console.log('json ', data);
console.log('Name', data.name);
alert('hello ' + data.name);
});
It's Simple. I did it this way.
For a wav file
from IPython.display import Audio
from scipy.io.wavfile import read
fs, data = read('StarWars60.wav', mmap=True) # fs - sampling frequency
data = data.reshape(-1, 1)
Audio(data = data[:, 0], rate = fs)
For mp3 file
import IPython.display import Audio
Audio('audio_file_name.mp3')
UPDATE: Post with images ? English Version | Versión en Español
If Windows fails to enumerate the device which is reported in Device Manager as error code 43:
If the device is listed in Device Manager as Other devices -> Android but reports an error code 28:
By doing this I was able to use my tablet for development under Windows 8.1.
Note: This solution uses Samsung drivers but works for other devices.
Post with images => English Version | Versión en Español
In C++
Any variable at file scope and that is not nested inside a class or function, is visible throughout all translation units in a program. This is called external linkage because at link time the name is visible to the linker everywhere, external to that translation unit.
Global variables and ordinary functions have external linkage.
Static object or function name at file scope is local to translation unit. That is called as Internal Linkage
Linkage refers only to elements that have addresses at link/load time; thus, class declarations and local variables have no linkage.
Jerker's answer is little simpler. Here's sample code which works from MS:
var folder = new Shell().NameSpace(folderPath);
foreach (FolderItem2 item in folder.Items())
{
var company = item.ExtendedProperty("Company");
var author = item.ExtendedProperty("Author");
// Etc.
}
For those who can't reference shell32 statically, you can invoke it dynamically like this:
var shellAppType = Type.GetTypeFromProgID("Shell.Application");
dynamic shellApp = Activator.CreateInstance(shellAppType);
var folder = shellApp.NameSpace(folderPath);
foreach (var item in folder.Items())
{
var company = item.ExtendedProperty("Company");
var author = item.ExtendedProperty("Author");
// Etc.
}
Maybe this example listed here can help you out. Statement from the author
about 24 lines of code to encrypt, 23 to decrypt
Due to the fact that the link in the original posting is dead - here the needed code parts (c&p without any change to the original source)
/*
Copyright (c) 2010 <a href="http://www.gutgames.com">James Craig</a>
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.*/
#region Usings
using System;
using System.IO;
using System.Security.Cryptography;
using System.Text;
#endregion
namespace Utilities.Encryption
{
/// <summary>
/// Utility class that handles encryption
/// </summary>
public static class AESEncryption
{
#region Static Functions
/// <summary>
/// Encrypts a string
/// </summary>
/// <param name="PlainText">Text to be encrypted</param>
/// <param name="Password">Password to encrypt with</param>
/// <param name="Salt">Salt to encrypt with</param>
/// <param name="HashAlgorithm">Can be either SHA1 or MD5</param>
/// <param name="PasswordIterations">Number of iterations to do</param>
/// <param name="InitialVector">Needs to be 16 ASCII characters long</param>
/// <param name="KeySize">Can be 128, 192, or 256</param>
/// <returns>An encrypted string</returns>
public static string Encrypt(string PlainText, string Password,
string Salt = "Kosher", string HashAlgorithm = "SHA1",
int PasswordIterations = 2, string InitialVector = "OFRna73m*aze01xY",
int KeySize = 256)
{
if (string.IsNullOrEmpty(PlainText))
return "";
byte[] InitialVectorBytes = Encoding.ASCII.GetBytes(InitialVector);
byte[] SaltValueBytes = Encoding.ASCII.GetBytes(Salt);
byte[] PlainTextBytes = Encoding.UTF8.GetBytes(PlainText);
PasswordDeriveBytes DerivedPassword = new PasswordDeriveBytes(Password, SaltValueBytes, HashAlgorithm, PasswordIterations);
byte[] KeyBytes = DerivedPassword.GetBytes(KeySize / 8);
RijndaelManaged SymmetricKey = new RijndaelManaged();
SymmetricKey.Mode = CipherMode.CBC;
byte[] CipherTextBytes = null;
using (ICryptoTransform Encryptor = SymmetricKey.CreateEncryptor(KeyBytes, InitialVectorBytes))
{
using (MemoryStream MemStream = new MemoryStream())
{
using (CryptoStream CryptoStream = new CryptoStream(MemStream, Encryptor, CryptoStreamMode.Write))
{
CryptoStream.Write(PlainTextBytes, 0, PlainTextBytes.Length);
CryptoStream.FlushFinalBlock();
CipherTextBytes = MemStream.ToArray();
MemStream.Close();
CryptoStream.Close();
}
}
}
SymmetricKey.Clear();
return Convert.ToBase64String(CipherTextBytes);
}
/// <summary>
/// Decrypts a string
/// </summary>
/// <param name="CipherText">Text to be decrypted</param>
/// <param name="Password">Password to decrypt with</param>
/// <param name="Salt">Salt to decrypt with</param>
/// <param name="HashAlgorithm">Can be either SHA1 or MD5</param>
/// <param name="PasswordIterations">Number of iterations to do</param>
/// <param name="InitialVector">Needs to be 16 ASCII characters long</param>
/// <param name="KeySize">Can be 128, 192, or 256</param>
/// <returns>A decrypted string</returns>
public static string Decrypt(string CipherText, string Password,
string Salt = "Kosher", string HashAlgorithm = "SHA1",
int PasswordIterations = 2, string InitialVector = "OFRna73m*aze01xY",
int KeySize = 256)
{
if (string.IsNullOrEmpty(CipherText))
return "";
byte[] InitialVectorBytes = Encoding.ASCII.GetBytes(InitialVector);
byte[] SaltValueBytes = Encoding.ASCII.GetBytes(Salt);
byte[] CipherTextBytes = Convert.FromBase64String(CipherText);
PasswordDeriveBytes DerivedPassword = new PasswordDeriveBytes(Password, SaltValueBytes, HashAlgorithm, PasswordIterations);
byte[] KeyBytes = DerivedPassword.GetBytes(KeySize / 8);
RijndaelManaged SymmetricKey = new RijndaelManaged();
SymmetricKey.Mode = CipherMode.CBC;
byte[] PlainTextBytes = new byte[CipherTextBytes.Length];
int ByteCount = 0;
using (ICryptoTransform Decryptor = SymmetricKey.CreateDecryptor(KeyBytes, InitialVectorBytes))
{
using (MemoryStream MemStream = new MemoryStream(CipherTextBytes))
{
using (CryptoStream CryptoStream = new CryptoStream(MemStream, Decryptor, CryptoStreamMode.Read))
{
ByteCount = CryptoStream.Read(PlainTextBytes, 0, PlainTextBytes.Length);
MemStream.Close();
CryptoStream.Close();
}
}
}
SymmetricKey.Clear();
return Encoding.UTF8.GetString(PlainTextBytes, 0, ByteCount);
}
#endregion
}
}
This one was your solution.
$x = 0;
while($row = mysqli_fetch_array($result)) {
$posts[$x]['post_id'] = $row['post_id'];
$posts[$x]['post_title'] = $row['post_title'];
$posts[$x]['type'] = $row['type'];
$posts[$x]['author'] = $row['author'];
$x++;
}
If you are using Docker make sure you are not using the same port in another service, in my case i was mistakenly using the same port for both PostgreSQL and Redis.
An update for Rails 5:
gem 'protected_attributes'
doesn't seem to work anymore. But give:
gem 'protected_attributes_continued'
a try.
I used the header("Access-Control-Allow-Origin: *");
method but still received the CORS error. It turns out that the PHP script that was being requested had an error in it (I had forgotten to add a period (.) when concatenating two variables). Once I fixed that typo, it worked!
So, It seems that the remote script being called cannot have errors within it.
while facing a very similar issue I watched a function in scope and had the function return the service variable. I have created a js fiddle. you can find the code below.
var myApp = angular.module("myApp",[]);
myApp.factory("randomService", function($timeout){
var retValue = {};
var data = 0;
retValue.startService = function(){
updateData();
}
retValue.getData = function(){
return data;
}
function updateData(){
$timeout(function(){
data = Math.floor(Math.random() * 100);
updateData()
}, 500);
}
return retValue;
});
myApp.controller("myController", function($scope, randomService){
$scope.data = 0;
$scope.dataUpdated = 0;
$scope.watchCalled = 0;
randomService.startService();
$scope.getRandomData = function(){
return randomService.getData();
}
$scope.$watch("getRandomData()", function(newValue, oldValue){
if(oldValue != newValue){
$scope.data = newValue;
$scope.dataUpdated++;
}
$scope.watchCalled++;
});
});
The most popular option is to use some third party library distributed as npm package like ng2-bootstrap project https://github.com/valor-software/ng2-bootstrap or Angular UI Bootstrap library.
I personally use ng2-bootstrap. There are many ways to configure it, because configuration depends on how your Angular project is build. Underneath I post example configuration based on Angular 2 QuickStart project https://github.com/angular/quickstart
Firstly we add dependencies in our package.json
{ ...
"dependencies": {
"@angular/common": "~2.4.0",
"@angular/compiler": "~2.4.0",
"@angular/core": "~2.4.0",
...
"bootstrap": "^3.3.7",
"ng2-bootstrap": "1.1.16-11"
},
... }
Then we have to map names to proper URL's in systemjs.config.js
(function (global) {
System.config({
...
// map tells the System loader where to look for things
map: {
// our app is within the app folder
app: 'app',
// angular bundles
'@angular/core': 'npm:@angular/core/bundles/core.umd.js',
'@angular/common': 'npm:@angular/common/bundles/common.umd.js',
'@angular/compiler': 'npm:@angular/compiler/bundles/compiler.umd.js',
'@angular/platform-browser': 'npm:@angular/platform-browser/bundles/platform-browser.umd.js',
'@angular/platform-browser-dynamic': 'npm:@angular/platform-browser-dynamic/bundles/platform-browser-dynamic.umd.js',
'@angular/http': 'npm:@angular/http/bundles/http.umd.js',
'@angular/router': 'npm:@angular/router/bundles/router.umd.js',
'@angular/forms': 'npm:@angular/forms/bundles/forms.umd.js',
//bootstrap
'moment': 'npm:moment/bundles/moment.umd.js',
'ng2-bootstrap': 'npm:ng2-bootstrap/bundles/ng2-bootstrap.umd.js',
// other libraries
'rxjs': 'npm:rxjs',
'angular-in-memory-web-api': 'npm:angular-in-memory-web-api/bundles/in-memory-web-api.umd.js'
},
...
});
})(this);
We have to import bootstrap .css file in index.html. We can get it from /node_modules/bootstrap directory on our hard drive (because we added bootstrap 3.3.7 dependency) or from web. There we are obtaining it from web:
<!DOCTYPE html>
<html>
<head>
...
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
...
</head>
<body>
<my-app>Loading...</my-app>
</body>
</html>
We should edit our app.module.ts file from /app directory
import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
//bootstrap alert import part 1
import {AlertModule} from 'ng2-bootstrap';
import { AppComponent } from './app.component';
@NgModule({
//bootstrap alert import part 2
imports: [ BrowserModule, AlertModule.forRoot() ],
declarations: [ AppComponent ],
bootstrap: [ AppComponent ]
})
export class AppModule { }
And finally our app.component.ts file from /app directory
import { Component } from '@angular/core';
@Component({
selector: 'my-app',
template: `
<alert type="success">
Well done!
</alert>
`
})
export class AppComponent {
constructor() { }
}
Then we have to install our bootstrap and ng2-bootstrap dependencies before we run our app. We should go to our project directory and type
npm install
Finally we can start our app
npm start
There are many code samples on ng2-bootstrap project github showing how to import ng2-bootstrap to various Angular 2 project builds. There is even plnkr sample. There is also API documentation on Valor-software (authors of the library) website.
A tricky way:
If you develop under Lunux, you can use all the power of sed:
from subprocess import check_call, CalledProcessError
PATH_TO_FILE = '/home/user/some/path/to/file.csv'
try:
check_call("sed -i -e 's|\\x0||g' {}".format(PATH_TO_FILE), shell=True)
except CalledProcessError as err:
print(err)
The most efficient solution for huge files.
Checked for Python3, Kubuntu
'CORRECTED VERSION OF LAST FUNCTION IN VISUAL BASIC BY GLENNG
Protected Overrides Function GetWebRequest(ByVal address As System.Uri) As System.Net.WebRequest
Dim w As System.Net.WebRequest = MyBase.GetWebRequest(address)
If _TimeoutMS <> 0 Then
w.Timeout = _TimeoutMS
End If
Return w '<<< NOTICE: MyBase.GetWebRequest(address) DOES NOT WORK >>>
End Function
Sometimes it's knowing what to ask. I didn't know as I am a developer who has taken on some DevOps work.
Apparently 'passwordless' or NOPASSWD login is a thing which you need to put in the /etc/sudoers file.
The answer to my question is at Ansible: best practice for maintaining list of sudoers.
The Ansible playbook code fragment looks like this from my problem:
- name: Make sure we have a 'wheel' group
group:
name: wheel
state: present
- name: Allow 'wheel' group to have passwordless sudo
lineinfile:
dest: /etc/sudoers
state: present
regexp: '^%wheel'
line: '%wheel ALL=(ALL) NOPASSWD: ALL'
validate: 'visudo -cf %s'
- name: Add sudoers users to wheel group
user:
name=deployer
groups=wheel
append=yes
state=present
createhome=yes
- name: Set up authorized keys for the deployer user
authorized_key: user=deployer key="{{item}}"
with_file:
- /home/railsdev/.ssh/id_rsa.pub
And the best part is that the solution is idempotent. It doesn't add the line
%wheel ALL=(ALL) NOPASSWD: ALL
to /etc/sudoers when the playbook is run a subsequent time. And yes...I was able to ssh into the server as "deployer" and run sudo commands without having to give a password.
Code for finding Length of int and decimal number:
#include<iostream>
#include<cmath>
using namespace std;
int main()
{
int len,num;
cin >> num;
len = log10(num) + 1;
cout << len << endl;
return 0;
}
//sample input output
/*45566
5
Process returned 0 (0x0) execution time : 3.292 s
Press any key to continue.
*/
public class TEst {
public static void main(String[] args) {
List<Integer> ls=new ArrayList<>();
ls.add(1);
ls.add(2);
List<Integer> ls1=new ArrayList<>();
ls1.add(3);
ls1.add(4);
List<List<Integer>> ls2=new ArrayList<>();
ls2.add(ls);
ls2.add(ls1);
List<List<List<Integer>>> ls3=new ArrayList<>();
ls3.add(ls2);
methodRecursion(ls3);
}
private static void methodRecursion(List ls3) {
for(Object ls4:ls3)
{
if(ls4 instanceof List)
{
methodRecursion((List)ls4);
}else {
System.out.print(ls4);
}
}
}
}
Simply install react-native CLI with below command.
sudo npm i -g react-native-cli
Reopen the terminal and type below command if you are using yarn.
yarn react-native info
In Kotlin There are Several Ways.
var arr = IntArray(size) // construct with only size
Then simply initial value from users or from another collection or wherever you want.
var arr = IntArray(size){0} // construct with size and fill array with 0
var arr = IntArray(size){it} // construct with size and fill with its index
We also can create array with built in function like-
var arr = intArrayOf(1, 2, 3, 4, 5) // create an array with 5 values
Another way
var arr = Array(size){0} // it will create an integer array
var arr = Array<String>(size){"$it"} // this will create array with "0", "1", "2" and so on.
You also can use doubleArrayOf()
or DoubleArray()
or any primitive type instead of Int.
var Hello = React.createClass({
render: function() {
return (
<div className="divClass">
<img src={this.props.url} alt={`${this.props.title}'s picture`} className="img-responsive" />
<span>Hello {this.props.name}</span>
</div>
);
}
});
format = function date2str(x, y) {
var z = {
M: x.getMonth() + 1,
d: x.getDate(),
h: x.getHours(),
m: x.getMinutes(),
s: x.getSeconds()
};
y = y.replace(/(M+|d+|h+|m+|s+)/g, function(v) {
return ((v.length > 1 ? "0" : "") + z[v.slice(-1)]).slice(-2)
});
return y.replace(/(y+)/g, function(v) {
return x.getFullYear().toString().slice(-v.length)
});
}
format(new Date('Sun May 11,2014'), 'yyyy-MM-dd')
"2014-05-11
This should work for you:
var movies = _db.Movies.OrderBy(c => c.Category).ThenBy(n => n.Name)
for(var memberName in ad)
{
//Member Name: memberName
//Member Value: ad[memberName]
}
Member means Member property, member variable, whatever you want to call it >_>
The above code will return EVERYTHING, including toString... If you only want to see if the object's prototype has been extended:
var dummyObj = {};
for(var memberName in ad)
{
if(typeof(dummyObj[memberName]) == typeof(ad[memberName])) continue; //note A
//Member Name: memberName
//Member Value: ad[memberName]
}
Note A: We check to see if the dummy object's member has the same type as our testing object's member. If it is an extend, dummyobject's member type should be "undefined"
The calculation occurs immediately since the calculation call is bound in the template, which displays its result when quantity
changes.
Instead you could try the following approach. Change your markup to the following:
<div ng-controller="myAppController" style="text-align:center">
<p style="font-size:28px;">Enter Quantity:
<input type="text" ng-model="quantity"/>
</p>
<button ng-click="calculateQuantity()">Calculate</button>
<h2>Total Cost: Rs.{{quantityResult}}</h2>
</div>
Next, update your controller:
myAppModule.controller('myAppController', function($scope,calculateService) {
$scope.quantity=1;
$scope.quantityResult = 0;
$scope.calculateQuantity = function() {
$scope.quantityResult = calculateService.calculate($scope.quantity, 10);
};
});
Here's a JSBin example that demonstrates the above approach.
The problem with this approach is the calculated result remains visible with the old value till the button is clicked. To address this, you could hide the result whenever the quantity
changes.
This would involve updating the template to add an ng-change
on the input, and an ng-if
on the result:
<input type="text" ng-change="hideQuantityResult()" ng-model="quantity"/>
and
<h2 ng-if="showQuantityResult">Total Cost: Rs.{{quantityResult}}</h2>
In the controller add:
$scope.showQuantityResult = false;
$scope.calculateQuantity = function() {
$scope.quantityResult = calculateService.calculate($scope.quantity, 10);
$scope.showQuantityResult = true;
};
$scope.hideQuantityResult = function() {
$scope.showQuantityResult = false;
};
These updates can be seen in this JSBin demo.
Need to do normal
forever start script.js
to start, and to check console/error logs use
forever logs
this will print list of all logs being stored by forever
and then you can use tail -f /path/to/logs/file.log
and this will print live logs to your window. hit ctrl+z to stop logs print.
Actually, you can get PowerShell to run using .NET 4 without affecting other .NET applications. I needed to do so to use the new HttpWebRequest "Host" property, however changing the "OnlyUseLatestCLR" broke Fiddler as that could not be used under .NET 4.
The developers of PowerShell obviously foresaw this happening, and they added a registry key to specify what version of the Framework it should use. One slight issue is that you need to take ownership of the registry key before changing it, as even administrators do not have access.
Change the value of that key to the required version. Keep in mind though that some snapins may no longer load unless they are .NET 4 compatible (WASP is the only one I have had trouble with, but I don't really use it anyway). VMWare, SQL Server 2008, PSCX, Active Directory (Microsoft and Quest Software) and SCOM all work fine.
They are project files, that hold the module information and meta data.
Just add *.iml
to .gitignore
.
In Android Studio: Press CTRL + F9 to rebuild your project. The missing *.iml
files will be generated.
l=[['A', 1], ['B', 2], ['C', 3]]
d={}
for i,j in l:
d.setdefault(i,j)
print(d)
It can't parse that string because "UTC" is not a valid time zone designator.
UTC time is denoted by adding a 'Z' to the end of the time string, so your parsing code should look like this:
DateTime.Parse("Tue, 1 Jan 2008 00:00:00Z");
From the Wikipedia article on ISO 8601
If the time is in UTC, add a 'Z' directly after the time without a space. 'Z' is the zone designator for the zero UTC offset. "09:30 UTC" is therefore represented as "09:30Z" or "0930Z". "14:45:15 UTC" would be "14:45:15Z" or "144515Z".
UTC time is also known as 'Zulu' time, since 'Zulu' is the NATO phonetic alphabet word for 'Z'.
The Underscore library also provides a "delay" function:
_.delay(function(msg) { console.log(msg); }, 5000, 'Hello');
You don't need to send messages.
Add an event to the one form and an event handler to the other. Then you can use a third project which references the other two to attach the event handler to the event. The two DLLs don't need to reference each other for this to work.
Suppose a 9800GT GPU:
https://www.tutorialspoint.com/cuda/cuda_threads.htm
A block cannot have more active threads than 512 therefore __syncthreads
can only synchronize limited number of threads. i.e. If you execute the following with 600 threads:
func1();
__syncthreads();
func2();
__syncthreads();
then the kernel must run twice and the order of execution will be:
Note:
The main point is __syncthreads
is a block-wide operation and it does not synchronize all threads.
I'm not sure about the exact number of threads that __syncthreads
can synchronize, since you can create a block with more than 512 threads and let the warp handle the scheduling. To my understanding it's more accurate to say: func1 is executed at least for the first 512 threads.
Before I edited this answer (back in 2010) I measured 14x8x32 threads were synchronized using __syncthreads
.
I would greatly appreciate if someone test this again for a more accurate piece of information.
A simpler way is
ggplot(data=df, aes(x=xvar, y=yvar)) +
geom_point()
ggsave(path = path, width = width, height = height, device='tiff', dpi=700)
Casting should be enough. If you're using C# 3.0 you can make a handy extension method to parse enum values:
public static TEnum ToEnum<TInput, TEnum>(this TInput value)
{
Type type = typeof(TEnum);
if (value == default(TInput))
{
throw new ArgumentException("Value is null or empty.", "value");
}
if (!type.IsEnum)
{
throw new ArgumentException("Enum expected.", "TEnum");
}
return (TEnum)Enum.Parse(type, value.ToString(), true);
}
XmlGrid.net has tool to convert csv to html table. Here is the link: http://xmlgrid.net/csvToHtml.html
I used your sample data, and got the following html table:
<table>
<!--Created with XmlGrid Free Online XML Editor (http://xmlgrid.net)-->
<tr>
<td>Name</td>
<td> Age</td>
<td> Sex</td>
</tr>
<tr>
<td>Cantor, Georg</td>
<td> 163</td>
<td> M</td>
</tr>
</table>
The closest thing to PHP's var_dump()
is pprint()
with the getmembers()
function in the built-in inspect
module:
from inspect import getmembers
from pprint import pprint
pprint(getmembers(yourObj))
This is sort of covered by the various responses above, but the first time I read this article I missed an important fact, which led to a minor bug in my code...
Session.Clear()
will CLEAR the values of all the keys but will NOT cause the session end event to fire.
Session.Abandon()
will NOT clear the values on the current request. IF another page is requested, the values will be gone for that one. However, abandon WILL throw the event.
So, in my case (and perhaps in yours?), I needed Clear()
followed by Abandon()
.
Add to doc header:
\usepackage{ amssymb }
Then at the desired location add:
$ \blacksquare $
Putting the condition in the join seems "semantically wrong" to me, as that's not what JOINs are "for". But that's very qualitative.
Additional problem: if you decide to switch from an inner join to, say, a right join, having the condition be inside the JOIN could lead to unexpected results.
The solution is the /Y
switch:
xcopy "C:\Users\ADMIN\Desktop\*.*" "D:\Backup\" /K /D /H /Y
IMHO returning a null
is a bad solution because now you have the problem of sending and interpreting it at the (likely) front end client.
I had the same error and I solved it by simply returning a List<FooObject>
.
I used JDBCTemplate.query()
.
At the front end (Angular web client), I simply examine the list and if it is empty (of zero length), treat it as no records found.
boost::lexical_cast works pretty well.
#include <boost/lexical_cast.hpp>
int main(int argc, char** argv) {
std::string foo = boost::lexical_cast<std::string>(argc);
}
Might want to try putting the PHP function on another PHP page, and use an AJAX call to set the variable.
this is Postgres UPDATE JOIN format:
UPDATE address
SET cid = customers.id
FROM customers
WHERE customers.id = address.id
Here's the other variations: http://mssql-to-postgresql.blogspot.com/2007/12/updates-in-postgresql-ms-sql-mysql.html
Download it from here and extract LatoOFL.rar
then go to TTF and open this font-face-generator click at Choose File
choose font which you want to use and click at generate then download it and then go html
file open it and you see the code like this
@font-face {
font-family: "Lato Black";
src: url('698242188-Lato-Bla.eot');
src: url('698242188-Lato-Bla.eot?#iefix') format('embedded-opentype'),
url('698242188-Lato-Bla.svg#Lato Black') format('svg'),
url('698242188-Lato-Bla.woff') format('woff'),
url('698242188-Lato-Bla.ttf') format('truetype');
font-weight: normal;
font-style: normal;
}
body{
font-family: "Lato Black";
direction: ltr;
}
change the src code and give the url where your this font directory placed, now you can use it at your website...
If you don't want to download it use this
<link type='text/css' href='http://fonts.googleapis.com/css?family=Lato:400,700' />
If all you want to do is to remove a merge commit (2) so that it is like it never happened, the command is simply as follows
git rebase --onto <sha of 1> <sha of 2> <blue branch>
And now the purple branch isn't in the commit log of blue at all and you have two separate branches again. You can then squash the purple independently and do whatever other manipulations you want without the merge commit in the way.
Use oracle.jdbc.OracleDriver, not oracle.jdbc.driver.OracleDriver. You do not need to register it if the driver jar file is in the "WEB-INF\lib" directory, if you are using Tomcat. Save this as test.jsp and put it in your web directory, and redeploy your web app folder in Tomcat manager:
<%@ page import="java.sql.*" %>
<HTML>
<HEAD>
<TITLE>Simple JSP Oracle Test</TITLE>
</HEAD><BODY>
<%
Connection conn = null;
try {
Class.forName("oracle.jdbc.OracleDriver");
conn = DriverManager.getConnection("jdbc:oracle:thin:@XXX.XXX.XXX.XXX:XXXX:dbName", "user", "password");
Statement stmt = conn.createStatement();
out.println("Connection established!");
}
catch (Exception ex)
{
out.println("Exception: " + ex.getMessage() + "");
}
finally
{
if (conn != null) {
try {
conn.close();
}
catch (Exception ignored) {
// ignore
}
}
}
%>
One more base R solution:
merge(aggregate(pt ~ Subject, max, data = group), group)
Subject pt Event
1 1 5 2
2 2 17 2
3 3 5 2
We can use date -d option
1) Change format to "%Y-%m-%d" format i.e 20121212 to 2012-12-12
date -d '20121212' +'%Y-%m-%d'
2)Get next or last day from a given date=20121212. Like get a date 7 days in past with specific format
date -d '20121212 -7 days' +'%Y-%m-%d'
3) If we are getting date in some variable say dat
dat2=$(date -d "$dat -1 days" +'%Y%m%d')
bash has a builtin
pushd SOME_PATH
run_stuff
...
...
popd
Another simple way,
final Calendar today = Calendar.getInstance();
today.setTime(new Date());
today.clear(Calendar.HOUR_OF_DAY);
today.clear(Calendar.HOUR);
today.clear(Calendar.MINUTE);
today.clear(Calendar.SECOND);
today.clear(Calendar.MILLISECOND);
You probably need to do something like :
Paint red = new Paint();
red.setColor(android.graphics.Color.RED);
red.setStyle(Paint.Style.FILL);
And use this color for your path, instead of your ARGB. Make sure the last point of your path ends on the first one, it makes sense also.
Tell me if it works please !
Swift 4+
button.contentHorizontalAlignment = .left
button.contentVerticalAlignment = .top
button.contentEdgeInsets = UIEdgeInsets(top: 10, left: 10, bottom: 10, right: 10)
There is another option that does not introduce global gotchas when trying to initialize multiple variables to the same value. Whether or not it is preferable to the long way is a judgement call. It will likely be slower and may or may not be more readable. In your specific case, I think that the long way is probably more readable and maintainable as well as being faster.
The other way utilizes Destructuring assignment.
let [moveUp, moveDown,_x000D_
moveLeft, moveRight,_x000D_
mouseDown, touchDown] = Array(6).fill(false);_x000D_
_x000D_
console.log(JSON.stringify({_x000D_
moveUp, moveDown,_x000D_
moveLeft, moveRight,_x000D_
mouseDown, touchDown_x000D_
}, null, ' '));_x000D_
_x000D_
// NOTE: If you want to do this with objects, you would be safer doing this_x000D_
let [obj1, obj2, obj3] = Array(3).fill(null).map(() => ({}));_x000D_
console.log(JSON.stringify({_x000D_
obj1, obj2, obj3_x000D_
}, null, ' '));_x000D_
// So that each array element is a unique object_x000D_
_x000D_
// Or another cool trick would be to use an infinite generator_x000D_
let [a, b, c, d] = (function*() { while (true) yield {x: 0, y: 0} })();_x000D_
console.log(JSON.stringify({_x000D_
a, b, c, d_x000D_
}, null, ' '));_x000D_
_x000D_
// Or generic fixed generator function_x000D_
function* nTimes(n, f) {_x000D_
for(let i = 0; i < n; i++) {_x000D_
yield f();_x000D_
}_x000D_
}_x000D_
let [p1, p2, p3] = [...nTimes(3, () => ({ x: 0, y: 0 }))];_x000D_
console.log(JSON.stringify({_x000D_
p1, p2, p3_x000D_
}, null, ' '));
_x000D_
This allows you to initialize a set of var
, let
, or const
variables to the same value on a single line all with the same expected scope.
References:
MDN: Array Global Object
MDN: Array.fill
You have to use WKWebView, which is available as of iOS8 in Framework 'WebKit' to get the speedup. If you need backwards compatibility, you have to use UIWebView for iOS7 and older.
I set up a little code to provide the UIViewController frame for the new WKWebView. It can be installed via cocoapods. Have a look here:
i wanted it for something else but eventually found a trick which you can try
somedate.calendar(compareDate, { sameDay: '[Today]'})=='Today'
var d = moment();_x000D_
var today = moment();_x000D_
_x000D_
console.log("Usign today's date, is Date is Today? ",d.calendar(today, {_x000D_
sameDay: '[Today]'})=='Today');_x000D_
_x000D_
var someRondomDate = moment("2012/07/13","YYYY/MM/DD");_x000D_
_x000D_
console.log("Usign Some Random Date, is Today ?",someRondomDate.calendar(today, {_x000D_
sameDay: '[Today]'})=='Today');_x000D_
_x000D_
_x000D_
var anotherRandomDate = moment("2012/07/13","YYYY/MM/DD");_x000D_
_x000D_
console.log("Two Random Date are same date ? ",someRondomDate.calendar(anotherRandomDate, {_x000D_
sameDay: '[Today]'})=='Today');
_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.18.1/moment.min.js"></script>
_x000D_
You should look into normalizing your database to avoid creating columns at runtime.
Make 3 tables:
Put questions and assessments in their respective tables and link them together through assessment_question using foreign keys.
You should give an object as argument
userModel.count({name: "sam"});
or
userModel.count({name: "sam"}).exec(); //if you are using promise
or
userModel.count({}); // if you want to get all counts irrespective of the fields
On the recent version of mongoose, count() is deprecated so use
userModel.countDocuments({name: "sam"});
You can use find
to find all matching files recursively:
$ find . -iname "*dbg*" -exec rename _dbg.txt .txt '{}' \;
EDIT: what the '{}'
and \;
are?
The -exec
argument makes find execute rename
for every matching file found. '{}'
will be replaced with the path name of the file. The last token, \;
is there only to mark the end of the exec expression.
All that is described nicely in the man page for find:
-exec utility [argument ...] ;
True if the program named utility returns a zero value as its
exit status. Optional arguments may be passed to the utility.
The expression must be terminated by a semicolon (``;''). If you
invoke find from a shell you may need to quote the semicolon if
the shell would otherwise treat it as a control operator. If the
string ``{}'' appears anywhere in the utility name or the argu-
ments it is replaced by the pathname of the current file.
Utility will be executed from the directory from which find was
executed. Utility and arguments are not subject to the further
expansion of shell patterns and constructs.
Use the -cp
or -classpath
switch.
$ java -help
Usage: java [-options] class [args...]
(to execute a class)
or java [-options] -jar jarfile [args...]
(to execute a jar file)
where options include:
...
-cp <class search path of directories and zip/jar files>
-classpath <class search path of directories and zip/jar files>
A ; separated list of directories, JAR archives,
and ZIP archives to search for class files.
(Note that the separator used to separate entries on the classpath differs between OSes, on my Windows machine it is ;
, in *nix it is usually :
.)
Here's a short Python program I wrote to complete this task. It was written in a couple of minutes, so it can probably be made better. Not sure how it'll handle nested tables (probably it'll do bad stuff) or multiple tables (probably they'll just appear one after another). It doesn't handle colspan
or rowspan
.
Enjoy.
from HTMLParser import HTMLParser
import sys
import re
class HTMLTableParser(HTMLParser):
def __init__(self, row_delim="\n", cell_delim="\t"):
HTMLParser.__init__(self)
self.despace_re = re.compile(r'\s+')
self.data_interrupt = False
self.first_row = True
self.first_cell = True
self.in_cell = False
self.row_delim = row_delim
self.cell_delim = cell_delim
def handle_starttag(self, tag, attrs):
self.data_interrupt = True
if tag == "table":
self.first_row = True
self.first_cell = True
elif tag == "tr":
if not self.first_row:
sys.stdout.write(self.row_delim)
self.first_row = False
self.first_cell = True
self.data_interrupt = False
elif tag == "td" or tag == "th":
if not self.first_cell:
sys.stdout.write(self.cell_delim)
self.first_cell = False
self.data_interrupt = False
self.in_cell = True
def handle_endtag(self, tag):
self.data_interrupt = True
if tag == "td" or tag == "th":
self.in_cell = False
def handle_data(self, data):
if self.in_cell:
#if self.data_interrupt:
# sys.stdout.write(" ")
sys.stdout.write(self.despace_re.sub(' ', data).strip())
self.data_interrupt = False
parser = HTMLTableParser()
parser.feed(sys.stdin.read())
Every method (other than a constructor) must have a return type.
public double diameter(){...
I don't think this should be quite efficient, but it works:
@foreach (var banner in Model.MainBanners) {
@Model.MainBanners.IndexOf(banner)
}
Although not secure, (no offense or anything), just stick the header function after you set the session variable
while($row = mysql_fetch_assoc($result))
{
$_SESSION["user"] = $username;
}
header('Location: /profile.php');
With jQuery, I've found that sometimes using val
to clear the value of a textbox has no effect, in those situations I've found that using attr
does the job
$('#searchField').attr("value", "");
Probable cause that remount
fails is you are not running adb
as root
.
Shell Script should be as follow.
# Script to mount Android Device as read/write.
# List the Devices.
adb devices;
# Run adb as root (Needs root access).
adb root;
# Since you're running as root su is not required
adb shell mount -o rw,remount /;
If this fails, you could try the below:
# List the Devices.
adb devices;
# Run adb as root
adb root;
adb remount;
adb shell su -c "mount -o rw,remount /";
To find which user
you are:
$ adb shell whoami
This might look cheap but it's working for me
SELECT CONVERT(DATETIME,LEFT(CONVERT(VARCHAR,@dateFieldOrVariable,101),10)+' 00:00:00.000')
This saved my life--->
set this line
ListView.setDescendantFocusability(ViewGroup.FOCUS_AFTER_DESCENDANTS);
Then in your manifest in activity tag type this-->
<activity android:windowSoftInputMode="adjustPan">
Your usual intent
Could you try this one:
create or replace
procedure point_triangle
IS
BEGIN
FOR thisteam in (select P.FIRSTNAME,P.LASTNAME, SUM(P.PTS) S from PLAYERREGULARSEASON P where P.TEAM = 'IND' group by P.FIRSTNAME, P.LASTNAME order by SUM(P.PTS) DESC)
LOOP
dbms_output.put_line(thisteam.FIRSTNAME|| ' ' || thisteam.LASTNAME || ':' || thisteam.S);
END LOOP;
END;
You can't use UIImagePickerController
, but you can use a custom image picker. I think ELCImagePickerController
is the best option, but here are some other libraries you could use:
Objective-C
1. ELCImagePickerController
2. WSAssetPickerController
3. QBImagePickerController
4. ZCImagePickerController
5. CTAssetsPickerController
6. AGImagePickerController
7. UzysAssetsPickerController
8. MWPhotoBrowser
9. TSAssetsPickerController
10. CustomImagePicker
11. InstagramPhotoPicker
12. GMImagePicker
13. DLFPhotosPicker
14. CombinationPickerController
15. AssetPicker
16. BSImagePicker
17. SNImagePicker
18. DoImagePickerController
19. grabKit
20. IQMediaPickerController
21. HySideScrollingImagePicker
22. MultiImageSelector
23. TTImagePicker
24. SelectImages
25. ImageSelectAndSave
26. imagepicker-multi-select
27. MultiSelectImagePickerController
28. YangMingShan(Yahoo like image selector)
29. DBAttachmentPickerController
30. BRImagePicker
31. GLAssetGridViewController
32. CreolePhotoSelection
Swift
1. LimPicker (Similar to WhatsApp's image picker)
2. RMImagePicker
3. DKImagePickerController
4. BSImagePicker
5. Fusuma(Instagram like image selector)
6. YangMingShan(Yahoo like image selector)
7. NohanaImagePicker
8. ImagePicker
9. OpalImagePicker
10. TLPhotoPicker
11. AssetsPickerViewController
12. Alerts-and-pickers/Telegram Picker
Thanx to @androidbloke,
I have added some library that I know for multiple image picker in swift.
Will update list as I find new ones.
Thank You.
If you're using some plugin which takes string and use construct Regex to create Regex Object i:e new RegExp()
Than Below string will work
'^\\S*$'
It's same regex @Bergi mentioned just the string version for new RegExp constructor
If you're using getValue()
you're doing something imperative in declarative paradigm. It's there as an escape hatch, but 99.9% of the time you should NOT use getValue()
. There are a few interesting things that getValue()
will do: It will throw an error if the subject has been unsubscribed, it will prevent you from getting a value if the subject is dead because it's errored, etc. But, again, it's there as an escape hatch for rare circumstances.
There are several ways of getting the latest value from a Subject or Observable in a "Rx-y" way:
BehaviorSubject
: But actually subscribing to it. When you first subscribe to BehaviorSubject
it will synchronously send the previous value it received or was initialized with.ReplaySubject(N)
: This will cache N
values and replay them to new subscribers.A.withLatestFrom(B)
: Use this operator to get the most recent value from observable B
when observable A
emits. Will give you both values in an array [a, b]
.A.combineLatest(B)
: Use this operator to get the most recent values from A
and B
every time either A
or B
emits. Will give you both values in an array.shareReplay()
: Makes an Observable multicast through a ReplaySubject
, but allows you to retry the observable on error. (Basically it gives you that promise-y caching behavior).publishReplay()
, publishBehavior(initialValue)
, multicast(subject: BehaviorSubject | ReplaySubject)
, etc: Other operators that leverage BehaviorSubject
and ReplaySubject
. Different flavors of the same thing, they basically multicast the source observable by funneling all notifications through a subject. You need to call connect()
to subscribe to the source with the subject.fromEvent<KeyboardEvent>(document.querySelector('#searcha') as HTMLInputElement , 'keyup')
.pipe(
debounceTime(500),
distinctUntilChanged(),
map(e => {
return e.target['value']; // <-- target does not exist on {}
})
).subscribe(k => console.log(k));
Maybe something like the above could help. Change it based on the real code. The issue is ........ target['value']
Building on @rprog's answer, you can combine the various pieces of the suffix & filter step into one line using a negative regex:
dfNew = df.merge(df2, left_index=True, right_index=True,
how='outer', suffixes=('', '_DROP')).filter(regex='^(?!.*_DROP)')
Or using df.join
:
dfNew = df.join(df2, lsuffix="DROP").filter(regex="^(?!.*DROP)")
The regex here is keeping anything that does not end with the word "DROP", so just make sure to use a suffix that doesn't appear among the columns already.
Suppose we have a generator:
def gen():
for i in range(10):
yield i
We can wrap the generator, along with the known length, in an object:
import itertools
class LenGen(object):
def __init__(self,gen,length):
self.gen=gen
self.length=length
def __call__(self):
return itertools.islice(self.gen(),self.length)
def __len__(self):
return self.length
lgen=LenGen(gen,10)
Instances of LenGen
are generators themselves, since calling them returns an iterator.
Now we can use the lgen
generator in place of gen
, and access len(lgen)
as well:
def new_gen():
for i in lgen():
yield float(i)/len(lgen)
for i in new_gen():
print(i)
Try this:
SELECT Count(*)
FROM <DATABASE_NAME>.INFORMATION_SCHEMA.TABLES
WHERE TABLE_TYPE = 'BASE TABLE'
This function handles also the invalid 29.2.2001 date.
function parseDate(str) {
var dateParts = str.split(".");
if (dateParts.length != 3)
return null;
var year = dateParts[2];
var month = dateParts[1];
var day = dateParts[0];
if (isNaN(day) || isNaN(month) || isNaN(year))
return null;
var result = new Date(year, (month - 1), day);
if (result == null)
return null;
if (result.getDate() != day)
return null;
if (result.getMonth() != (month - 1))
return null;
if (result.getFullYear() != year)
return null;
return result;
}
It's been a while since you asked but I just had the same issue. As already mentioned by Estel the problem with key listeners is that they only work with hardware keyboards. To do this with an IME (soft keyboard), the solution is a bit more elaborate.
The single method we actually want to override is sendKeyEvent
in the EditText
's InputConnection
class. This method is called when key events occur in an IME. But in order to override this, we need to implement a custom EditText
which overrides the onCreateInputConnection
method, wrapping the default InputConnection
object in a proxy class! :|
Sounds complicated, but here's the simplest example I could contrive:
public class ZanyEditText extends EditText {
private Random r = new Random();
public ZanyEditText(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
public ZanyEditText(Context context, AttributeSet attrs) {
super(context, attrs);
}
public ZanyEditText(Context context) {
super(context);
}
public void setRandomBackgroundColor() {
setBackgroundColor(Color.rgb(r.nextInt(256), r.nextInt(256), r
.nextInt(256)));
}
@Override
public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
return new ZanyInputConnection(super.onCreateInputConnection(outAttrs),
true);
}
private class ZanyInputConnection extends InputConnectionWrapper {
public ZanyInputConnection(InputConnection target, boolean mutable) {
super(target, mutable);
}
@Override
public boolean sendKeyEvent(KeyEvent event) {
if (event.getAction() == KeyEvent.ACTION_DOWN
&& event.getKeyCode() == KeyEvent.KEYCODE_DEL) {
ZanyEditText.this.setRandomBackgroundColor();
// Un-comment if you wish to cancel the backspace:
// return false;
}
return super.sendKeyEvent(event);
}
}
}
The line with the call to setRandomBackgroundColor
is where my special backspace action occurs. In this case, changing the EditText
's background colour.
If you're inflating this from XML remember to use the full package name as the tag:
<cc.buttfu.test.ZanyEditText
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/somefield"
></cc.buttfu.test.ZanyEditText>
am not sure if I fully understand the issue, but guess it's related to the one I had, am using Qt with TCP socket communication, all non-blocking, both Windows and Linux..
wanted to get a quick notification when an already connected client failed or completely disappeared, and not waiting the default 900+ seconds until the disconnect signal got raised. The trick to get this working was to set the TCP_USER_TIMEOUT socket option of the SOL_TCP layer to the required value, given in milliseconds.
this is a comparably new option, pls see http://tools.ietf.org/html/rfc5482, but apparently it's working fine, tried it with WinXP, Win7/x64 and Kubuntu 12.04/x64, my choice of 10 s turned out to be a bit longer, but much better than anything else I've tried before ;-)
the only issue I came across was to find the proper includes, as apparently this isn't added to the standard socket includes (yet..), so finally I defined them myself as follows:
#ifdef WIN32
#include <winsock2.h>
#else
#include <sys/socket.h>
#endif
#ifndef SOL_TCP
#define SOL_TCP 6 // socket options TCP level
#endif
#ifndef TCP_USER_TIMEOUT
#define TCP_USER_TIMEOUT 18 // how long for loss retry before timeout [ms]
#endif
setting this socket option only works when the client is already connected, the lines of code look like:
int timeout = 10000; // user timeout in milliseconds [ms]
setsockopt (fd, SOL_TCP, TCP_USER_TIMEOUT, (char*) &timeout, sizeof (timeout));
and the failure of an initial connect is caught by a timer started when calling connect(), as there will be no signal of Qt for this, the connect signal will no be raised, as there will be no connection, and the disconnect signal will also not be raised, as there hasn't been a connection yet..
Modify the while loop as below. Declare s1 as String s1; one time outside the loop. To end the loop, simply use ctrl+z.
while (sc.hasNext())
{
s1 = sc.next();
System.out.println(s1);
System.out.print("Enter your sentence: ");
}
How do you get string concatenation, aside from long SQL strings in PreparedStatements (that you could easily provide in a text file and load as a resource anyway) that you break over several lines?
You aren't creating SQL strings directly are you? That's the biggest no-no in programming. Please use PreparedStatements, and supply the data as parameters. It reduces the chance of SQL Injection vastly.
What about:
a.sort {|x,y| y[:bar]<=>x[:bar]}
It works!!
irb
>> a = [
?> { :foo => 'foo', :bar => 2 },
?> { :foo => 'foo', :bar => 3 },
?> { :foo => 'foo', :bar => 5 },
?> ]
=> [{:bar=>2, :foo=>"foo"}, {:bar=>3, :foo=>"foo"}, {:bar=>5, :foo=>"foo"}]
>> a.sort {|x,y| y[:bar]<=>x[:bar]}
=> [{:bar=>5, :foo=>"foo"}, {:bar=>3, :foo=>"foo"}, {:bar=>2, :foo=>"foo"}]
for all views (you need dba privileges for this query)
select view_name from dba_views
for all accessible views (accessible by logged user)
select view_name from all_views
for views owned by logged user
select view_name from user_views
On Windows, I had this issue with static files cropping up under pydev/eclipse with python 2.7, due to an instance of django (1.8.7) that had been installed under cygwin. This caused a conflict between windows style paths and cygwin style paths. So, unfindable static files despite all the above fixes. I removed the extra distribution (so that all packages were installed by pip under windows) and this fixed the issue.
I had the same issue, however DoEvents didn't help me as my data connections had background-refresh enabled. Instead, using Wayne G. Dunn's answer as a jumping-off point, I created the following solution, which works just fine for me;
Sub Refresh_All_Data_Connections()
For Each objConnection In ThisWorkbook.Connections
'Get current background-refresh value
bBackground = objConnection.OLEDBConnection.BackgroundQuery
'Temporarily disable background-refresh
objConnection.OLEDBConnection.BackgroundQuery = False
'Refresh this connection
objConnection.Refresh
'Set background-refresh value back to original value
objConnection.OLEDBConnection.BackgroundQuery = bBackground
Next
MsgBox "Finished refreshing all data connections"
End Sub
The MsgBox is for testing only and can be removed once you're happy the code waits.
Also, I prefer ThisWorkbook to ActiveWorkbook as I know it will target the workbook where the code resides, just in case focus changes. Nine times out of ten this won't matter, but I like to err on the side of caution.
EDIT: Just saw your edit about using an xlConnectionTypeXMLMAP connection which does not have a BackgroundQuery option, sorry. I'll leave the above for anyone (like me) looking for a way to refresh OLEDBConnection types.
I would do it this way:
import sys
def main(argv):
if len(argv) < 2:
sys.stderr.write("Usage: %s <database>" % (argv[0],))
return 1
if not os.path.exists(argv[1]):
sys.stderr.write("ERROR: Database %r was not found!" % (argv[1],))
return 1
if __name__ == "__main__":
sys.exit(main(sys.argv))
This allows main()
to be imported into other modules if desired, and simplifies debugging because you can choose what argv
should be.
Add following inside head tag
<script type="text/javascript">
angular.element(document.getElementsByTagName('head')).append(angular.element('<base href="' + window.location.pathname + '" />'));
</script>
This will prevent the reload.
You could also do something like this:
df = df[['x', 'y', 'a', 'b']]
You can get the list of columns with:
cols = list(df.columns.values)
The output will produce something like this:
['a', 'b', 'x', 'y']
...which is then easy to rearrange manually before dropping it into the first function
you just have to change the name of your input filed because same name is required in parameter and input field name just replace this line Your code working fine
<input type="file" name="file" />
You might need a GLOBAL TEMPORARY TABLE.
In Oracle these are created once and then when invoked the data is private to your session.
Try something like this...
CREATE GLOBAL TEMPORARY TABLE temp_number
( number_column NUMBER( 10, 0 )
)
ON COMMIT DELETE ROWS;
BEGIN
INSERT INTO temp_number
( number_column )
( select distinct sgbstdn_pidm
from sgbstdn
where sgbstdn_majr_code_1 = 'HS04'
and sgbstdn_program_1 = 'HSCOMPH'
);
FOR pidms_rec IN ( SELECT number_column FROM temp_number )
LOOP
-- Do something here
NULL;
END LOOP;
END;
/
https://github.com/dualface/cocos2d-x-extensions/blob/master/TODO.tasks , he is developing nice features on cocos2d-x
int rgb = ((r&0x0ff)<<16)|((g&0x0ff)<<8)|(b&0x0ff);
If you know that your r, g, and b values are never > 255 or < 0 you don't need the &0x0ff
Additionaly
int red = (rgb>>16)&0x0ff;
int green=(rgb>>8) &0x0ff;
int blue= (rgb) &0x0ff;
No need for multipling.
You've already stated why np.maximum
is different - it returns an array that is the element-wise maximum between two arrays.
As for np.amax
and np.max
: they both call the same function - np.max
is just an alias for np.amax
, and they compute the maximum of all elements in an array, or along an axis of an array.
In [1]: import numpy as np
In [2]: np.amax
Out[2]: <function numpy.core.fromnumeric.amax>
In [3]: np.max
Out[3]: <function numpy.core.fromnumeric.amax>
You can try using jquery.pep.js:
jquery.pep.js is a lightweight jQuery plugin which turns any DOM element into a draggable object. It works across mostly all browsers, from old to new, from touch to click. I built it to serve a need in which jQuery UI’s draggable was not fulfilling, since it didn’t work on touch devices (without some hackery).
Pretty sure you can't do that, as it violates the purpose of uniques.
However, this person seems to have a decent work around: http://sqlservercodebook.blogspot.com/2008/04/multiple-null-values-in-unique-index-in.html
This is an old question, but it has no chosen answer, and I just solved this problem myself. Here's my solution:
Make sure you are set up to work with your Google API in the first place. See Google's list of prerequisites. I was working with Google My Business, so I also went through it's Get Started process.
In the OAuth 2.0 playground, Step 1 requires you to select which API you want to authenticate. Select or input as applicable for your case (in my case for Google My Business, I had to input https://www.googleapis.com/auth/plus.business.manage into the "Input your own scopes" input field). Note: this is the same as what's described in step 6 of the "Make a simple HTTP request" section of the Get Started guide.
Assuming successful authentication, you should get an "Access token" returned in the "Step 1's result" step in the OAuth playground. Copy this token to your clipboard.
Open Postman and open whichever collection you want as necessary.
In Postman, make sure "GET" is selected as the request type, and click on the "Authorization" tab below the request type drop-down.
In the Authorization "TYPE" dropdown menu, select "Bearer Token"
Paste your previously copied "Access Token" which you copied from the OAuth playground into the "Token" field which displays in Postman.
Almost there! To test if things work, put https://mybusiness.googleapis.com/v4/accounts/ into the main URL input bar in Postman and click the send button. You should get a JSON list of accounts back in the response that looks something like the following:
{
"accounts": [
{
"name": "accounts/REDACTED",
"accountName": "REDACTED",
"type": "PERSONAL",
"state": {
"status": "UNVERIFIED"
}
},
{
"name": "accounts/REDACTED",
"accountName": "REDACTED",
"type": "LOCATION_GROUP",
"role": "OWNER",
"state": {
"status": "UNVERIFIED"
},
"permissionLevel": "OWNER_LEVEL"
}
]
}
I also integrated it with joor library
Just use
Reflect.on(yourObject).set("finalFieldName", finalFieldValue);
Also I fixed an issue with override
which the previous solutions seem to miss.
However use this very carefully, only when there's no other good solution.
You can get "ssh_exchange_identification: Connection closed by remote host" if your sshd
service is not operational!
If you have access to the server check you have the sshd
service running with:
ps aux | grep ssh
and check it is listening on port 22:
netstat -plant | grep :22
As "cfphpflex" suggested you can add break;
after setting the header. You can also echo something, such as echo 'test';
.
Adding the jquery*.js file reference twice can also cause the issue. It could be part of your bundle and you might have added to the page too. Hence you need to remove the additional reference like
Copy and paste your data into MS Word and use built in text-conversion to "Capitalize Each Word". Compare against your original data to address exceptions. Can't see any way around manually sidestepping "MacDonald" and "IBM" type exceptions but this was how I got it done FWIW.
fmod(x, y)
is the function you use.
Easy, \n
needs to be in the string.
Set the PGPASSWORD environment variable inside the script before calling psql
PGPASSWORD=pass1234 psql -U MyUsername myDatabaseName
For reference, see http://www.postgresql.org/docs/current/static/libpq-envars.html
Edit
Since Postgres 9.2 there is also the option to specify a connection string or URI that can contain the username and password.
Using that is a security risk because the password is visible in plain text when looking at the command line of a running process e.g. using ps
(Linux), ProcessExplorer (Windows) or similar tools, by other users.
See also this question on Database Administrators
Create your assets directory the same as lib level
like this
projectName
-android
-ios
-lib
-assets
-pubspec.yaml
then your pubspec.yaml like
flutter:
assets:
- assets/images/
now you can use Image.asset("/assets/images/")
Add an environment variable called NODE_PATH
and set it to %USERPROFILE%\Application Data\npm\node_modules
(Windows XP), %AppData%\npm\node_modules
(Windows 7/8/10), or wherever npm ends up installing the modules on your Windows flavor. To be done with it once and for all, add this as a System variable in the Advanced tab of the System Properties dialog (run control.exe sysdm.cpl,System,3
).
Quick solution in Windows 7+ is to just run:
rem for future
setx NODE_PATH %AppData%\npm\node_modules
rem for current session
set NODE_PATH=%AppData%\npm\node_modules
It's worth to mention that NODE_PATH
is only used when importing modules in Node apps. When you want to use globally installed modules' binaries in your CLI you need to add it also to your PATH
, but without node_modules
part (for example %AppData%\npm
in Windows 7/8/10).
Old story
I'm pretty much new to node.js myself so I can be not entirely right but from my experience it's works this way:
See similar question for more details: How do I install a module globally using npm?
According with this line: https://github.com/pingyuanChen/webpack-uglify-js-plugin/blob/master/index.js#L117
should be something like:
var webpack = require("webpack");
module.exports = {
entry: "./entry.js",
devtool: "source-map",
output: {
path: "./dist",
filename: "bundle.js"
},
plugins: [
new webpack.optimize.UglifyJsPlugin({
minimize: true,
compress: false
})
]
};
Indeed you can have multiple builds by exporting different configs according your env / argv strategies.
The problem here are PHP namespaces. You need to learn how to use them. As your controller are in App\Http\Controllers
namespace, if you refer any other class, you need to add leading backslash (or proper namespace) or add use
statement at the beginning of file (before class definition).
So in your case you could use:
$headquote = \DB::table('quotation_texts')->find(176);
$headquote = \App\Quotation::find(176);
or add in your controller class use
statement so the beginning of your controller class could look like this:
<?php
namespace App\Http\Controllers;
use DB;
use App\Quotation;
For more information about namespaces you could look at How to use objects from other namespaces and how to import namespaces in PHP or namespaces in PHP manual
I know your question does not specify if you are trying to open all a tags in a new window or only the external links.
But in case you only want external links to open in a new tab you can do this:
$( 'a[href^="http://"]' ).attr( 'target','_blank' )
$( 'a[href^="https://"]' ).attr( 'target','_blank' )
The only thing that springs to mind for this is to use a proxy server based in Europe. Either have your colleague set one up [if possible] or find a free proxy. A quick Google search came up with http://www.anonymousinet.com/ as the top result.
One of the possible reasons is when you load jQuery TWICE ,like:
<script src='..../jquery.js'></script>
....
....
....
....
....
<script src='......./jquery.js'></script>
So, check your source code and remove duplicate jQuery load.
Seems like looking for something specific to the installed program would work better, but HKCU\Software and HKLM\Software are the spots to look.
[self.tableView setTableFooterView:footerView];
The Footer be positioned at the bottom of the page, but not fixed.
CSS
html {
height: 100%;
}
body {
position: relative;
margin: 0;
min-height: 100%;
padding: 0;
}
#header {
background: #595959;
height: 90px;
}
#footer {
position: absolute;
bottom: 0;
width: 100%;
height: 90px;
background-color: #595959;
}
HTML
<html>
<head></head>
<body>
<div id="header"></div>
<div id="content"></div>
<div id="footer"></div>
</body>
</html>
smiley favicon to prevent error:
//const fs = require('fs');
//const favicon = fs.readFileSync(__dirname+'/public/favicon.ico'); // read file
const favicon = new Buffer.from('AAABAAEAEBAQAAAAAAAoAQAAFgAAACgAAAAQAAAAIAAAAAEABAAAAAAAgAAAAAAAAAAAAAAAEAAAAAAAAAAAAAAA/4QAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAEREQAAAAAAEAAAEAAAAAEAAAABAAAAEAAAAAAQAAAQAAAAABAAAAAAAAAAAAAAAAAAAAAAAAAAEAABAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD//wAA//8AAP//AAD8HwAA++8AAPf3AADv+wAA7/sAAP//AAD//wAA+98AAP//AAD//wAA//8AAP//AAD//wAA', 'base64');
app.get("/favicon.ico", function(req, res) {
res.statusCode = 200;
res.setHeader('Content-Length', favicon.length);
res.setHeader('Content-Type', 'image/x-icon');
res.setHeader("Cache-Control", "public, max-age=2592000"); // expiers after a month
res.setHeader("Expires", new Date(Date.now() + 2592000000).toUTCString());
res.end(favicon);
});
to change icon in code above
make an icon maybe here: http://www.favicon.cc/ or here :http://favicon-generator.org
convert it to base64 maybe here: http://base64converter.com/
then replace the icon base 64 value
general information how to create a personalized fav icon
icons are made using photoshop or inkscape, maybe inkscape then photoshop for vibrance and color correction (in image->adjustments menu).
for quick icon goto http://www.clker.com/ and pick some Vector Clip Arts, and download as svg. then bring it to inkscape (https://inkscape.org/) and change colors or delete parts, maybe add something from another vector clipart image, then to export select the parts to export and click file>export, pick size like 16x16 for favicon or 32x32. for further edit 128x128 or 256x256. ico package can have several icon sizes inside. it can have along with 16x16 pixel favicon a high quality icons for link for the website.
then maybe enhance the image in photoshop. like vibrance, bevel effect, round mask, anything.
then upload this image to one of the websites that generate favicons. there are also programs for windows for editing icons like https://sourceforge.net/projects/variicons/ .
to add the favicon to website. just put the favicon.ico as a file in the root folder of the domain. for example in node.js in public folder that contains the static files. it doesn't have to be anything special like code above just a simple file.
A fixed-point combinator is a higher-order function fix
that by definition satisfies the equivalence
forall f. fix f = f (fix f)
fix f
represents a solution x
to the fixed-point equation
x = f x
The factorial of a natural number can be proved by
fact 0 = 1
fact n = n * fact (n - 1)
Using fix
, arbitrary constructive proofs over general/µ-recursive functions can be derived without nonymous self-referentiality.
fact n = (fix fact') n
where
fact' rec n = if n == 0
then 1
else n * rec (n - 1)
such that
fact 3
= (fix fact') 3
= fact' (fix fact') 3
= if 3 == 0 then 1 else 3 * (fix fact') (3 - 1)
= 3 * (fix fact') 2
= 3 * fact' (fix fact') 2
= 3 * if 2 == 0 then 1 else 2 * (fix fact') (2 - 1)
= 3 * 2 * (fix fact') 1
= 3 * 2 * fact' (fix fact') 1
= 3 * 2 * if 1 == 0 then 1 else 1 * (fix fact') (1 - 1)
= 3 * 2 * 1 * (fix fact') 0
= 3 * 2 * 1 * fact' (fix fact') 0
= 3 * 2 * 1 * if 0 == 0 then 1 else 0 * (fix fact') (0 - 1)
= 3 * 2 * 1 * 1
= 6
This formal proof that
fact 3 = 6
methodically uses the fixed-point combinator equivalence for rewrites
fix fact' -> fact' (fix fact')
The untyped lambda calculus formalism consists in a context-free grammar
E ::= v Variable
| ? v. E Abstraction
| E E Application
where v
ranges over variables, together with the beta and eta reduction rules
(? x. B) E -> B[x := E] Beta
? x. E x -> E if x doesn’t occur free in E Eta
Beta reduction substitutes all free occurrences of the variable x
in the abstraction (“function”) body B
by the expression (“argument”) E
. Eta reduction eliminates redundant abstraction. It is sometimes omitted from the formalism. An irreducible expression, to which no reduction rule applies, is in normal or canonical form.
? x y. E
is shorthand for
? x. ? y. E
(abstraction multiarity),
E F G
is shorthand for
(E F) G
(application left-associativity),
? x. x
and
? y. y
are alpha-equivalent.
Abstraction and application are the two only “language primitives” of the lambda calculus, but they allow encoding of arbitrarily complex data and operations.
The Church numerals are an encoding of the natural numbers similar to the Peano-axiomatic naturals.
0 = ? f x. x No application
1 = ? f x. f x One application
2 = ? f x. f (f x) Twofold
3 = ? f x. f (f (f x)) Threefold
. . .
SUCC = ? n f x. f (n f x) Successor
ADD = ? n m f x. n f (m f x) Addition
MULT = ? n m f x. n (m f) x Multiplication
. . .
A formal proof that
1 + 2 = 3
using the rewrite rule of beta reduction:
ADD 1 2
= (? n m f x. n f (m f x)) (? g y. g y) (? h z. h (h z))
= (? m f x. (? g y. g y) f (m f x)) (? h z. h (h z))
= (? m f x. (? y. f y) (m f x)) (? h z. h (h z))
= (? m f x. f (m f x)) (? h z. h (h z))
= ? f x. f ((? h z. h (h z)) f x)
= ? f x. f ((? z. f (f z)) x)
= ? f x. f (f (f x)) Normal form
= 3
In lambda calculus, combinators are abstractions that contain no free variables. Most simply: I
, the identity combinator
? x. x
isomorphic to the identity function
id x = x
Such combinators are the primitive operators of combinator calculi like the SKI system.
S = ? x y z. x z (y z)
K = ? x y. x
I = ? x. x
Beta reduction is not strongly normalizing; not all reducible expressions, “redexes”, converge to normal form under beta reduction. A simple example is divergent application of the omega ?
combinator
? x. x x
to itself:
(? x. x x) (? y. y y)
= (? y. y y) (? y. y y)
. . .
= _|_ Bottom
Reduction of leftmost subexpressions (“heads”) is prioritized. Applicative order normalizes arguments before substitution, normal order does not. The two strategies are analogous to eager evaluation, e.g. C, and lazy evaluation, e.g. Haskell.
K (I a) (? ?)
= (? k l. k) ((? i. i) a) ((? x. x x) (? y. y y))
diverges under eager applicative-order beta reduction
= (? k l. k) a ((? x. x x) (? y. y y))
= (? l. a) ((? x. x x) (? y. y y))
= (? l. a) ((? y. y y) (? y. y y))
. . .
= _|_
since in strict semantics
forall f. f _|_ = _|_
but converges under lazy normal-order beta reduction
= (? l. ((? i. i) a)) ((? x. x x) (? y. y y))
= (? l. a) ((? x. x x) (? y. y y))
= a
If an expression has a normal form, normal-order beta reduction will find it.
The essential property of the Y
fixed-point combinator
? f. (? x. f (x x)) (? x. f (x x))
is given by
Y g
= (? f. (? x. f (x x)) (? x. f (x x))) g
= (? x. g (x x)) (? x. g (x x)) = Y g
= g ((? x. g (x x)) (? x. g (x x))) = g (Y g)
= g (g ((? x. g (x x)) (? x. g (x x)))) = g (g (Y g))
. . . . . .
The equivalence
Y g = g (Y g)
is isomorphic to
fix f = f (fix f)
The untyped lambda calculus can encode arbitrary constructive proofs over general/µ-recursive functions.
FACT = ? n. Y FACT' n
FACT' = ? rec n. if n == 0 then 1 else n * rec (n - 1)
FACT 3
= (? n. Y FACT' n) 3
= Y FACT' 3
= FACT' (Y FACT') 3
= if 3 == 0 then 1 else 3 * (Y FACT') (3 - 1)
= 3 * (Y FACT') (3 - 1)
= 3 * FACT' (Y FACT') 2
= 3 * if 2 == 0 then 1 else 2 * (Y FACT') (2 - 1)
= 3 * 2 * (Y FACT') 1
= 3 * 2 * FACT' (Y FACT') 1
= 3 * 2 * if 1 == 0 then 1 else 1 * (Y FACT') (1 - 1)
= 3 * 2 * 1 * (Y FACT') 0
= 3 * 2 * 1 * FACT' (Y FACT') 0
= 3 * 2 * 1 * if 0 == 0 then 1 else 0 * (Y FACT') (0 - 1)
= 3 * 2 * 1 * 1
= 6
(Multiplication delayed, confluence)
For Churchian untyped lambda calculus, there has been shown to exist a recursively enumerable infinity of fixed-point combinators besides Y
.
X = ? f. (? x. x x) (? x. f (x x))
Y' = (? x y. x y x) (? y x. y (x y x))
Z = ? f. (? x. f (? v. x x v)) (? x. f (? v. x x v))
T = (? x y. y (x x y)) (? x y. y (x x y))
. . .
Normal-order beta reduction makes the unextended untyped lambda calculus a Turing-complete rewrite system.
In Haskell, the fixed-point combinator can be elegantly implemented
fix :: forall t. (t -> t) -> t
fix f = f (fix f)
Haskell’s laziness normalizes to a finity before all subexpressions have been evaluated.
primes :: Integral t => [t]
primes = sieve [2 ..]
where
sieve = fix (\ rec (p : ns) ->
p : rec [n | n <- ns
, n `rem` p /= 0])
See Should my constructors use "initialization lists" or "assignment"?
Briefly: in your specific case, it does not change anything. But:
My guess for why option 2 is more common is that option 1 is not well-known, neither are its advantages. Option 2's syntax feels more natural to the new C++ programmer.
I ran into this issue as well. I hate to dump on EF because it works so well, but it is just slow. In most cases I just want to find a record or update/insert. Even simple operations like this are slow. I pulled back 1100 records from a table into a List and that operation took 6 seconds with EF. For me this is too long, even saving takes too long.
I ended up making my own ORM. I pulled the same 1100 records from a database and my ORM took 2 seconds, much faster than EF. Everything with my ORM is almost instant. The only limitation right now is that it only works with MS SQL Server, but it could be changed to work with others like Oracle. I use MS SQL Server for everything right now.
If you would like to try my ORM here is the link and website:
https://github.com/jdemeuse1204/OR-M-Data-Entities
Or if you want to use nugget:
PM> Install-Package OR-M_DataEntities
Documentation is on there as well
The solution found here helped us to update master to a previous commit that had already been pushed:
git checkout master
git reset --hard e3f1e37
git push --force origin e3f1e37:master
The key difference from the accepted answer is the commit hash "e3f1e37:" before master in the push command.
You should try something running Mono (its compatible with .NET).
For game development, I recommend unity: http://unity3d.com/
for general aplications: http://xamarin.com/monoforandroid
Why not keep things simple and use an adjacency matrix or an adjacency list?
As of EF 5.0, you need to include the System.ComponentModel.DataAnnotations.Schema
namespace.
With google-drive-ftp-adapter I have been able to access the My Drive area of Google Drive with the FileZilla FTP client. However, I have not been able to access the Shared with me area.
You can configure which Google account credentials it uses by changing the account property in the configuration.properties file from default to the desired Google account name. See the instructions at http://www.andresoviedo.org/google-drive-ftp-adapter/
I think this will work for you. But visitors are easy if they got something in seconds without spending more time and hence they will also again visit your site.
<a href="file.zip"
onclick="if (event.button==0)
setTimeout(function(){document.body.innerHTML='thanks!'},500)">
Start automatic download!
</a>
The previous answers gave poor results when using rounded corners or stroke-width
that's >1 . For example, you would expect the following code to produce a rounded rectangle, but the corners are clipped by the parent svg
component:
<svg width="200" height="100">_x000D_
<!--this rect should have rounded corners-->_x000D_
<rect x="0" y="0" rx="5" ry="5" width="200" height="100" stroke="red" stroke-width="10px" fill="white"/>_x000D_
<text x="50%" y="50%" alignment-baseline="middle" text-anchor="middle">CLIPPED BORDER</text> _x000D_
</svg>
_x000D_
Instead, I recommend wrapping the text
in a svg
and then nesting that new svg
and the rect
together inside a g
element, as in the following example:
<!--the outer svg here-->_x000D_
<svg width="400px" height="300px">_x000D_
_x000D_
<!--the rect/text group-->_x000D_
<g transform="translate(50,50)">_x000D_
<rect rx="5" ry="5" width="200" height="100" stroke="green" fill="none" stroke-width="10"/>_x000D_
<svg width="200px" height="100px">_x000D_
<text x="50%" y="50%" alignment-baseline="middle" text-anchor="middle">CORRECT BORDER</text> _x000D_
</svg>_x000D_
</g>_x000D_
_x000D_
<!--rest of the image's code-->_x000D_
</svg>
_x000D_
This fixes the clipping problem that occurs in the answers above. I also translated the rect/text group using the transform="translate(x,y)"
attribute to demonstrate that this provides a more intuitive approach to positioning the rect/text on-screen.
You can do this be using a new Subject
too:
Typescript:
let subject = new Subject();
get_categories(...) {
this.http.post(...).subscribe(
(response) => {
this.total = response.json();
subject.next();
}
);
return subject; // can be subscribed as well
}
get_categories(...).subscribe(
(response) => {
// ...
}
);
Simply write to file string.Empty
, when append is set to false in StreamWriter. I think this one is easiest to understand for beginner.
private void ClearFile()
{
if (!File.Exists("TextFile.txt"))
File.Create("TextFile.txt");
TextWriter tw = new StreamWriter("TextFile.txt", false);
tw.Write(string.Empty);
tw.Close();
}
Others have answered your earlier question. For this:
As an addendum, is there any way to extract directly with the header names rather than with column numbers?
I haven't tried it, but you could store each header's index in a hash and then use that hash to get its index later on.
for(i=0;i<$NF;i++){
hash[$i] = i;
}
Then later on, use it:
j = hash["header1"];
print $j;
If escaping doesn't work, you can try this:
$str += $("" | Out-String)
It just adds nothing, but as an Out-String
, which creates a new line.
The pattern must have delimiters. Delimiters can be a forward slash (/) or any non alphanumeric characters(#,$,*,...). Examples
$pattern = "/My name is '(.*)' and im fine/";
$pattern = "#My name is '(.*)' and im fine#";
$pattern = "@My name is '(.*)' and im fine@";
when: myvar | default('', true) | trim != ''
I use | trim != ''
to check if a variable has an empty value or not. I also always add the | default(..., true)
check to catch when myvar
is undefined too.
Yes, Eclipse can be a pain, as almost any IDE can. Please remain factual, however.
Switching to a new workspace should help you. Eclipse has almost no settings that are stored outside your workspace.
You can loop through the Selection object to see what was selected. Here is a code snippet from Microsoft (http://msdn.microsoft.com/en-us/library/aa203726(office.11).aspx):
Sub Count_Selection()
Dim cell As Object
Dim count As Integer
count = 0
For Each cell In Selection
count = count + 1
Next cell
MsgBox count & " item(s) selected"
End Sub
GitHub now has an import option that lets you choose whatever you want your new imported repository public or private
In addition to grouping by the field name, you may also group by ordinal, or position of the field within the table. 1 corresponds to the first field (regardless of name), 2 is the second, and so on.
This is generally ill-advised if you're grouping on something specific, since the table/view structure may change. Additionally, it may be difficult to quickly comprehend what your SQL query is doing if you haven’t memorized the table fields.
If you are returning a unique set, or quickly performing a temporary lookup, this is nice shorthand syntax to reduce typing. If you plan to run the query again at some point, I’d recommend replacing those to avoid future confusion and unexpected complications (due to scheme changes).
If you want to run a task that's associated with a host, but on different host, you should try delegate_to.
In your case, you should delegate to your localhost (ansible master) and calling ansible-playbook
command
here is what you need to install the SQL profiler http://msdn.microsoft.com/en-us/library/bb500441.aspx. However, i would suggest you to read through this one http://blog.sqlauthority.com/2009/08/03/sql-server-introduction-to-sql-server-2008-profiler-2/ if you are looking to do it on your Production Environment. There is another better way to look at the queries watch this one and see if it helps http://www.youtube.com/watch?v=vvziPI5OQyE
There is also another straight and more clear way
git commit -m "Title" -m "Description ..........";
This worked for me:
brew uninstall openssl
brew tap-new $USER/old-openssl
brew extract --version=1.0.2t openssl $USER/old-openssl
brew install [email protected]
Source: https://github.com/kelaberetiv/TagUI/issues/635#issuecomment-560138773
In our case it was Windows-integrated authentication specified in the app's web.config
BUT the windows-auth module was not installed on the IIS machine at all.
Just adding another possible reason.
Another approach:
union IP {
unsigned int ip;
struct {
unsigned char d;
unsigned char c;
unsigned char b;
unsigned char a;
} ip2;
};
...
char ips[20];
IP ip;
ip.ip = 0xAABBCCDD;
sprintf(ips, "%x.%x.%x.%x", ip.ip2.a, ip.ip2.b, ip.ip2.c, ip.ip2.d);
printf("%s\n", ips);
To directly answer your question, yes, you can mock some methods without mocking others. This is called a partial mock. See the Mockito documentation on partial mocks for more information.
For your example, you can do something like the following, in your test:
Stock stock = mock(Stock.class);
when(stock.getPrice()).thenReturn(100.00); // Mock implementation
when(stock.getQuantity()).thenReturn(200); // Mock implementation
when(stock.getValue()).thenCallRealMethod(); // Real implementation
In that case, each method implementation is mocked, unless specify thenCallRealMethod()
in the when(..)
clause.
There is also a possibility the other way around with spy instead of mock:
Stock stock = spy(Stock.class);
when(stock.getPrice()).thenReturn(100.00); // Mock implementation
when(stock.getQuantity()).thenReturn(200); // Mock implementation
// All other method call will use the real implementations
In that case, all method implementation are the real one, except if you have defined a mocked behaviour with when(..)
.
There is one important pitfall when you use when(Object)
with spy like in the previous example. The real method will be called (because stock.getPrice()
is evaluated before when(..)
at runtime). This can be a problem if your method contains logic that should not be called. You can write the previous example like this:
Stock stock = spy(Stock.class);
doReturn(100.00).when(stock).getPrice(); // Mock implementation
doReturn(200).when(stock).getQuantity(); // Mock implementation
// All other method call will use the real implementations
Another possibility may be to use org.mockito.Mockito.CALLS_REAL_METHODS
, such as:
Stock MOCK_STOCK = Mockito.mock( Stock.class, CALLS_REAL_METHODS );
This delegates unstubbed calls to real implementations.
However, with your example, I believe it will still fail, since the implementation of getValue()
relies on quantity
and price
, rather than getQuantity()
and getPrice()
, which is what you've mocked.
Another possibility is to avoid mocks altogether:
@Test
public void getValueTest() {
Stock stock = new Stock(100.00, 200);
double value = stock.getValue();
assertEquals("Stock value not correct", 100.00*200, value, .00001);
}
TL;DR:
pip install -Iv
(i.e. pip install -Iv MySQL_python==1.2.2
)First, I see two issues with what you're trying to do. Since you already have an installed version, you should either uninstall the current existing driver or use pip install -I MySQL_python==1.2.2
However, you'll soon find out that this doesn't work. If you look at pip's installation log, or if you do a pip install -Iv MySQL_python==1.2.2
you'll find that the PyPI URL link does not work for MySQL_python v1.2.2. You can verify this here: http://pypi.python.org/pypi/MySQL-python/1.2.2
The download link 404s and the fallback URL links are re-directing infinitely due to sourceforge.net's recent upgrade and PyPI's stale URL.
So to properly install the driver, you can follow these steps:
pip uninstall MySQL_python
pip install -Iv http://sourceforge.net/projects/mysql-python/files/mysql-python/1.2.2/MySQL-python-1.2.2.tar.gz/download
Note that the use of pow(x,y)
is less efficient than x*x*x
y times as shown and answered here https://stackoverflow.com/a/2940800/319728.
So if you're going for efficiency use x*x*x
.
Try this code:
SELECT * FROM table WHERE column REGEXP '^[A-Za-z0-9]+$'
This makes sure that all characters match.
What about /disable
, and /enable
switch for a /change
command?
schtasks.exe /change /s <machine name> /tn <task name> /disable
schtasks.exe /change /s <machine name> /tn <task name> /enable
I like
Get-WmiObject Win32_computersystem | format-custom *
That seems to expand everything.
There's also a show-object command in the PowerShellCookbook module that does it in a GUI. Jeffrey Snover, the PowerShell creator, uses it in his unplugged videos (recommended).
Although most often I use
Get-WmiObject Win32_computersystem | fl *
It avoids the .format.ps1xml file that defines a table or list view for the object type, if there are any. The format file may even define column headers that don't match any property names.
You can use the (object) function to convert your array into an object.
$arr= [128=> ['status'=>
'Figure A. Facebook \'s horizontal scrollbars showing up on a 1024x768 screen resolution.'],
129=>['status'=>'The other day at work, I had some spare time']];
$ArrToObject=(object)$arr;
var_dump($ArrToObject);
The result will be an object that contains arrays:
object(stdClass)#1048 (2) { [128]=> array(1) {
["status"]=> string(87) "Figure A. Facebook 's horizontal scrollbars showing up on a 1024x768 screen resolution." }
[129]=> array(1) { ["status"]=> string(44) "The other day at work, I had some spare time" } }
No, it's not possible.
It's really, if not use native selects, if you create custom select widget from html elements, t.e. "li".
You can use the AddOrUpdate
method:
db.Books.AddOrUpdate(book); //requires using System.Data.Entity.Migrations;
db.SaveChanges();
For small tables DELETE
is often faster and needs less aggressive locking (for heavy concurrent load):
DELETE FROM tbl;
With no WHERE
condition.
For medium or bigger tables, go with TRUNCATE tbl
, like @Greg posted.
If I check with Count() Linq executes a "SELECT COUNT(*).." in the database, but I need to check if the results contains data, I resolved to introducing FirstOrDefault() instead of Count();
Before
var cfop = from tabelaCFOPs in ERPDAOManager.GetTable<TabelaCFOPs>()
if (cfop.Count() > 0)
{
var itemCfop = cfop.First();
//....
}
After
var cfop = from tabelaCFOPs in ERPDAOManager.GetTable<TabelaCFOPs>()
var itemCfop = cfop.FirstOrDefault();
if (itemCfop != null)
{
//....
}
You can either use the prepareStatement
method taking an additional int
parameter
PreparedStatement ps = con.prepareStatement(sql, Statement.RETURN_GENERATED_KEYS)
For some JDBC drivers (for example, Oracle) you have to explicitly list the column names or indices of the generated keys:
PreparedStatement ps = con.prepareStatement(sql, new String[]{"USER_ID"})
According to MySQL documentation, you should be able to just enclose that datetime string in single quotes, ('YYYY-MM-DD HH:MM:SS') and it should work. Look here: Date and Time Literals
So, in your case, the command should be as follows:
UPDATE products SET former_date='2011-12-18 13:17:17' WHERE id=1
This commonly happened use case for any developer.
It is better to have it as function in your local system. (So better to keep this script in one of the shell profile like ksh/zsh or bash profile based on the user preference)
function killport {
kill -9 `lsof -i tcp:"$1" | grep LISTEN | awk '{print $2}'`
}
Usage:
killport port_number
Example:
killport 8080
If the web service being invoked uses windows integrated security, creating a NetworkCredential
from the current WindowsIdentity
should be sufficient to allow the web service to use the current users windows login. However, if the web service uses a different security model, there isn't any way to extract a users password from the current identity ... that in and of itself would be insecure, allowing you, the developer, to steal your users passwords. You will likely need to provide some way for your user to provide their password, and keep it in some secure cache if you don't want them to have to repeatedly provide it.
Edit: To get the credentials for the current identity, use the following:
Uri uri = new Uri("http://tempuri.org/");
ICredentials credentials = CredentialCache.DefaultCredentials;
NetworkCredential credential = credentials.GetCredential(uri, "Basic");
Evaluating "1,2,3" results in (1, 2, 3)
, a tuple
. As you've discovered, tuples are immutable. Convert to a list before processing.
You can use javascript Spread Syntax to convert string to an array. In the solution below, I remove the comma then convert the string to an array.
var string = "0,1"
var array = [...string.replace(',', '')]
console.log(array[0])
This is to keep requesting inputs while this input is integer and find whether it is odd or even else it will end.
int counter = 1;
System.out.println("Enter a number:");
Scanner OddInput = new Scanner(System.in);
while(OddInput.hasNextInt()){
int Num = OddInput.nextInt();
if (Num %2==0){
System.out.println("Number " + Num + " is Even");
System.out.println("Enter a number:");
}
else {
System.out.println("Number " + Num + " is Odd");
System.out.println("Enter a number:");
}
}
System.out.println("Program Ended");
}
CSS has become a very powerful tool over the years and it has hacks for a lot of things javaScript can do
There is a hack in CSS for using conditional statements/logic.
It involves using the symbol '~'
Let me further illustrate with an example.
Let's say you want a background to slide into the page when a button is clicked. All you need to do is use a radio checkbox. Style the label for the radio underneath the button so that when the button is pressed the checkbox is also pressed.
Then you use the code below
.checkbox:checked ~ .background{
opacity:1
width: 100%
}
This code simply states IF the checkbox is CHECKED then open up the background ELSE leave it as it is.
Your code sample didn't expand on part of your topic, namely symbols, and so that part of the question went unanswered.
If you have two strings, foo and bar, and both can be either a string or a symbol, you can test equality with
foo.to_s == bar.to_s
It's a little more efficient to skip the string conversions on operands with known type. So if foo is always a string
foo == bar.to_s
But the efficiency gain is almost certainly not worth demanding any extra work on behalf of the caller.
Prior to Ruby 2.2, avoid interning uncontrolled input strings for the purpose of comparison (with strings or symbols), because symbols are not garbage collected, and so you can open yourself to denial of service through resource exhaustion. Limit your use of symbols to values you control, i.e. literals in your code, and trusted configuration properties.
Ruby 2.2 introduced garbage collection of symbols.
The thing to watch out for when writing C++ dlls is name mangling. If you want interoperability between C and C++, you'd be better off by exporting non-mangled C-style functions from within the dll.
You have two options to use a dll
LoadLibrary()
or some suitable function to load the library, retrieve a function pointer (GetProcAddress
) and call it -- runtime dynamic linkingExporting classes will not work if you follow the second method though.
Setting a variable to null
makes sure to break any references to objects in all browsers including circular references being made between the DOM elements and Javascript scopes. By using delete
command we are marking objects to be cleared on the next run of the Garbage collection, but if there are multiple variables referencing the same object, deleting a single variable WILL NOT free the object, it will just remove the linkage between that variable and the object. And on the next run of the Garbage collection, only the variable will be cleaned.
YouTube resolutions and images
http://img.youtube.com/vi/<video-id>/<resolution><image>.jpg
Resolution
- lowest resolution
sd - Standard Definition
mq - Medium Quality
hq - High Quality
maxres - MAXimum RESolution
Image
default - Default image (1, 2, 3 shot from video, or custom uploaded)
1 - First shot from video
2 - Second shot from video
3 - Third shot from video
Generally, the system should be handling view controller instantiation with a storyboard. What you want is to traverse the viewController hierarchy by grabbing a reference to the self.window.rootViewController
as opposed to initializing view controllers, which should already be initialized correctly if you've setup your storyboard properly.
So, let's say your rootViewController
is a UINavigationController and then you want to send something to its top view controller, you would do it like this in your AppDelegate's didFinishLaunchingWithOptions
:
UINavigationController *nav = (UINavigationController *) self.window.rootViewController;
MyViewController *myVC = (MyViewController *)nav.topViewController;
myVC.data = self.data;
In Swift if would be very similar:
let nav = self.window.rootViewController as! UINavigationController;
let myVC = nav.topViewController as! MyViewController
myVc.data = self.data
You really shouldn't be initializing view controllers using storyboard id's from the app delegate unless you want to bypass the normal way storyboard is loaded and load the whole storyboard yourself. If you're having to initialize scenes from the AppDelegate you're most likely doing something wrong. I mean imagine you, for some reason, want to send data to a view controller way down the stack, the AppDelegate shouldn't be reaching way into the view controller stack to set data. That's not its business. It's business is the rootViewController. Let the rootViewController handle its own children! So, if I were bypassing the normal storyboard loading process by the system by removing references to it in the info.plist file, I would at most instantiate the rootViewController using instantiateViewControllerWithIdentifier:
, and possibly its root if it is a container, like a UINavigationController. What you want to avoid is instantiating view controllers that have already been instantiated by the storyboard. This is a problem I see a lot. In short, I disagree with the accepted answer. It is incorrect unless the posters means to remove loading of the storyboard from the info.plist since you will have loaded 2 storyboards otherwise, which makes no sense. It's probably not a memory leak because the system initialized the root scene and assigned it to the window, but then you came along and instantiated it again and assigned it again. Your app is off to a pretty bad start!
In my case the user agent was not good enought since in the Ipad the user agent was the same as in Mac OS, therefore I had to do a nasty trick:
var mql = window.matchMedia("(orientation: landscape)");
/**
* If we are in landscape but the height is bigger than width
*/
if(mql.matches && window.screen.height > window.screen.width) {
// IOS
} else {
// Mac OS
}
When I want to access the application file version (what is set in Assembly Information -> File version), say to set a label's text to it on form load to display the version, I have just used
versionlabel.Text = "Version " + Application.ProductVersion;
This approach requires a reference to System.Windows.Forms
.
Layout inflator inflates/adds external XML to your current view.
getView() is called numerous times including when scrolled. So if it already has view inflated we don't wanna do it again since inflating is a costly process.. thats why we check if its null and then inflate it.
The parent view is single cell of your List..
This works well:
function test(el){
el.childNodes.item("child").style.display = "none";
}
If the argument of item() function is an integer, the function will treat it as an index. If the argument is a string, then the function searches for name or ID of element.
Some time if lots if Test files are there then Eclipse failed to pass -classpath options for all libs and path due to classpath param lenght limitations. To Solve it go to Run
Configerations -> JUnit -> Your Project Config -> ClassPath -> Check "Use Temporary Jar Options"
At least it solved my problem.
What also works and is even nicer for long, multiline texts, is putting your text indented on the next line, after a pipe or greater-than sign:
text: >
Op dit plein stond het hoofdkantoor van de NIROM: Nederlands Indische
Radio Omroep
A pipe preserves newlines, a gt-sign turns all the following lines into one long string.
They would start by hiding the defining a structure that would hold members necessary for the implementation. Then providing a group of functions that would manipulate the contents of the structure.
Something like this:
typedef struct vec
{
unsigned char* _mem;
unsigned long _elems;
unsigned long _elemsize;
unsigned long _capelems;
unsigned long _reserve;
};
vec* vec_new(unsigned long elemsize)
{
vec* pvec = (vec*)malloc(sizeof(vec));
pvec->_reserve = 10;
pvec->_capelems = pvec->_reserve;
pvec->_elemsize = elemsize;
pvec->_elems = 0;
pvec->_mem = (unsigned char*)malloc(pvec->_capelems * pvec->_elemsize);
return pvec;
}
void vec_delete(vec* pvec)
{
free(pvec->_mem);
free(pvec);
}
void vec_grow(vec* pvec)
{
unsigned char* mem = (unsigned char*)malloc((pvec->_capelems + pvec->_reserve) * pvec->_elemsize);
memcpy(mem, pvec->_mem, pvec->_elems * pvec->_elemsize);
free(pvec->_mem);
pvec->_mem = mem;
pvec->_capelems += pvec->_reserve;
}
void vec_push_back(vec* pvec, void* data, unsigned long elemsize)
{
assert(elemsize == pvec->_elemsize);
if (pvec->_elems == pvec->_capelems) {
vec_grow(pvec);
}
memcpy(pvec->_mem + (pvec->_elems * pvec->_elemsize), (unsigned char*)data, pvec->_elemsize);
pvec->_elems++;
}
unsigned long vec_length(vec* pvec)
{
return pvec->_elems;
}
void* vec_get(vec* pvec, unsigned long index)
{
assert(index < pvec->_elems);
return (void*)(pvec->_mem + (index * pvec->_elemsize));
}
void vec_copy_item(vec* pvec, void* dest, unsigned long index)
{
memcpy(dest, vec_get(pvec, index), pvec->_elemsize);
}
void playwithvec()
{
vec* pvec = vec_new(sizeof(int));
for (int val = 0; val < 1000; val += 10) {
vec_push_back(pvec, &val, sizeof(val));
}
for (unsigned long index = (int)vec_length(pvec) - 1; (int)index >= 0; index--) {
int val;
vec_copy_item(pvec, &val, index);
printf("vec(%d) = %d\n", index, val);
}
vec_delete(pvec);
}
Further to this they would achieve encapsulation by using void* in the place of vec* for the function group, and actually hide the structure definition from the user by defining it within the C module containing the group of functions rather than the header. Also they would hide the functions that you would consider to be private, by leaving them out from the header and simply prototyping them only in the C module.
I add the ",-std=c++0x" after "-c -fmessage-length=0",under Project Properties -> C/C++ Build -> Settings -> GCC C++ Compiler -> Miscellaneous. Dont't forget to add the comma "," as the seperator.
The simplest way to get an input box is with the Read-Host cmdlet and -AsSecureString parameter.
$us = Read-Host 'Enter Your User Name:' -AsSecureString
$pw = Read-Host 'Enter Your Password:' -AsSecureString
This is especially useful if you are gathering login info like my example above. If you prefer to keep the variables obfuscated as SecureString objects you can convert the variables on the fly like this:
[Runtime.InteropServices.Marshal]::PtrToStringAuto([Runtime.InteropServices.Marshal]::SecureStringToBSTR($us))
[Runtime.InteropServices.Marshal]::PtrToStringAuto([Runtime.InteropServices.Marshal]::SecureStringToBSTR($pw))
If the info does not need to be secure at all you can convert it to plain text:
$user = [Runtime.InteropServices.Marshal]::PtrToStringAuto([Runtime.InteropServices.Marshal]::SecureStringToBSTR($us))
Read-Host and -AsSecureString appear to have been included in all PowerShell versions (1-6) but I do not have PowerShell 1 or 2 to ensure the commands work identically. https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.utility/read-host?view=powershell-3.0
You can see a working example here:
http://codepen.io/anon/pen/GJzBxo
and
http://codepen.io/anon/pen/LVqBQo
Same div, same text, different "spaces"
<div style="width: 500px; background: red"> [loooong text with spaces]</div>
vs
<div style="width: 500px; background: red"> [loooong text with ]</div>
I was looking for a way to do this in the terminal and filter lines in the normal "grep behaviour". Have your strings in a file strings.txt
:
string1
string2
...
Then you can build a regular expression like (string1|string2|...)
and use it for filtering:
cmd1 | grep -P "($(cat strings.txt | tr '\n' '|' | head -c -1))" | cmd2
Edit: Above only works if you don't use any regex characters, if escaping is required, it could be done like:
cat strings.txt | python3 -c "import re, sys; [sys.stdout.write(re.escape(line[:-1]) + '\n') for line in sys.stdin]" | ...
My preference, and I have no idea why this isn't already in jQuery:
$.fn.orElse = function(elseFunction) {
if (!this.length) {
elseFunction();
}
};
Used like this:
$('#notAnElement').each(function () {
alert("Wrong, it is an element")
}).orElse(function() {
alert("Yup, it's not an element")
});
Or, as it looks in CoffeeScript:
$('#notAnElement').each ->
alert "Wrong, it is an element"; return
.orElse ->
alert "Yup, it's not an element"
The term ‘fixed point’ refers to the corresponding manner in which numbers are represented, with a fixed number of digits after, and sometimes before, the decimal point. With floating-point representation, the placement of the decimal point can ‘float’ relative to the significant digits of the number. For example, a fixed-point representation with a uniform decimal point placement convention can represent the numbers 123.45, 1234.56, 12345.67, etc, whereas a floating-point representation could in addition represent 1.234567, 123456.7, 0.00001234567, 1234567000000000, etc.
Here is an easy solution:
public class CapitalFirstLetters {
public static void main(String[] args) {
String word = "it's java, baby!";
String[] wordSplit;
String wordCapital = "";
wordSplit = word.split(" ");
for (int i = 0; i < wordSplit.length; i++) {
wordCapital = wordSplit[i].substring(0, 1).toUpperCase() + wordSplit[i].substring(1) + " ";
}
System.out.println(wordCapital);
}}
If your simple test page is located on other protocol/domain/port than your hello world node.js example you are doing cross-domain requests and violating same origin policy therefore your jQuery ajax calls (get and load) are failing silently. To get this working cross-domain you should use JSONP based format. For example node.js code:
var http = require('http');
http.createServer(function (req, res) {
console.log('request received');
res.writeHead(200, {'Content-Type': 'text/plain'});
res.end('_testcb(\'{"message": "Hello world!"}\')');
}).listen(8124);
and client side JavaScript/jQuery:
$(document).ready(function() {
$.ajax({
url: 'http://192.168.1.103:8124/',
dataType: "jsonp",
jsonpCallback: "_testcb",
cache: false,
timeout: 5000,
success: function(data) {
$("#test").append(data);
},
error: function(jqXHR, textStatus, errorThrown) {
alert('error ' + textStatus + " " + errorThrown);
}
});
});
There are also other ways how to get this working, for example by setting up reverse proxy or build your web application entirely with framework like express.
@DCookie
I just want to point out that you can leave off the lines that say
EXCEPTION
WHEN OTHERS THEN
RAISE;
You'll get the same effect if you leave off the exception block all together, and the line number reported for the exception will be the line where the exception is actually thrown, not the line in the exception block where it was re-raised.