This will work nicely with in-line arrays. Plus, I think things are tidier and more reusable when wrapped up in a function.
function array_rand_value($a) {
return $a[array_rand($a)];
}
Usage:
array_rand_value(array("a", "b", "c", "d"));
On PHP < 7.1.0, array_rand()
uses rand()
, so you wouldn't want to this function for anything related to security or cryptography. On PHP 7.1.0+, use this function without concern since rand()
has been aliased to mt_rand()
.
Let me provide complete code for execution protected methods via reflection. It supports any types of params including generics, autoboxed params and null values
@SuppressWarnings("unchecked")
public static <T> T executeSuperMethod(Object instance, String methodName, Object... params) throws Exception {
return executeMethod(instance.getClass().getSuperclass(), instance, methodName, params);
}
public static <T> T executeMethod(Object instance, String methodName, Object... params) throws Exception {
return executeMethod(instance.getClass(), instance, methodName, params);
}
@SuppressWarnings("unchecked")
public static <T> T executeMethod(Class clazz, Object instance, String methodName, Object... params) throws Exception {
Method[] allMethods = clazz.getDeclaredMethods();
if (allMethods != null && allMethods.length > 0) {
Class[] paramClasses = Arrays.stream(params).map(p -> p != null ? p.getClass() : null).toArray(Class[]::new);
for (Method method : allMethods) {
String currentMethodName = method.getName();
if (!currentMethodName.equals(methodName)) {
continue;
}
Type[] pTypes = method.getParameterTypes();
if (pTypes.length == paramClasses.length) {
boolean goodMethod = true;
int i = 0;
for (Type pType : pTypes) {
if (!ClassUtils.isAssignable(paramClasses[i++], (Class<?>) pType)) {
goodMethod = false;
break;
}
}
if (goodMethod) {
method.setAccessible(true);
return (T) method.invoke(instance, params);
}
}
}
throw new MethodNotFoundException("There are no methods found with name " + methodName + " and params " +
Arrays.toString(paramClasses));
}
throw new MethodNotFoundException("There are no methods found with name " + methodName);
}
Method uses apache ClassUtils for checking compatibility of autoboxed params
we are using like this
<label for="1">
<div class="options">
<input type="radio" name="mem" id="1" value="1" checked="checked"/>option one
</div>
</label>
<label for="2">
<div class="options">
<input type="radio" name="mem" id="2" value="1" checked="checked"/>option two
</div></label>
using
<label for="1">
tag and catching is with
id=1
hope this helps.
Action is a delegate (pointer) to a method, that takes zero, one or more input parameters, but does not return anything.
Func is a delegate (pointer) to a method, that takes zero, one or more input parameters, and returns a value (or reference).
Predicate is a special kind of Func often used for comparisons.
Though widely used with Linq, Action and Func are concepts logically independent of Linq. C++ already contained the basic concept in form of typed function pointers.
Here is a small example for Action and Func without using Linq:
class Program
{
static void Main(string[] args)
{
Action<int> myAction = new Action<int>(DoSomething);
myAction(123); // Prints out "123"
// can be also called as myAction.Invoke(123);
Func<int, double> myFunc = new Func<int, double>(CalculateSomething);
Console.WriteLine(myFunc(5)); // Prints out "2.5"
}
static void DoSomething(int i)
{
Console.WriteLine(i);
}
static double CalculateSomething(int i)
{
return (double)i/2;
}
}
If you let dynamic SQL create a temp table, this table is owned by the Dynamic SQL connection, as opposed to the connection your stored procedure is called from.
DECLARE @COMMA_SEPARATED_KEYS varchar(MAX);
DROP TABLE IF EXISTS KV;
CREATE TABLE KV (id_person int, mykey varchar(30), myvalue int);
INSERT INTO KV VALUES
(1, 'age', 16),
(1, 'weight', 63),
(1, 'height', 175),
(2, 'age', 26),
(2, 'weight', 83),
(2, 'height', 185);
WITH cte(mykey) AS (
SELECT DISTINCT mykey FROM KV
)
SELECT @COMMA_SEPARATED_KEYS=STRING_AGG(mykey,',') FROM cte;
SELECT @COMMA_SEPARATED_KEYS AS keys;
DECLARE @ExecuteExpression varchar(MAX);
DROP TABLE IF EXISTS #Pivoted;
SET @ExecuteExpression = N'
SELECT *
INTO #Pivoted
FROM
(
SELECT
mykey,
myvalue,
id_person
FROM KV
) AS t
PIVOT(
MAX(t.myvalue)
FOR mykey IN (COMMA_SEPARATED_KEYS)
) AS pivot_table;
';
SET @ExecuteExpression = REPLACE(@ExecuteExpression, 'COMMA_SEPARATED_KEYS', @COMMA_SEPARATED_KEYS);
EXEC(@ExecuteExpression);
SELECT * FROM #Pivoted;
Msg 208, Level 16, State 0 Invalid object name '#Pivoted'. This is because #Pivoted is owned by the Dynamic SQL connection. So the last instruction
SELECT * FROM #Pivoted
fails.
One way to not face this issue is to make sure all references to #Pivoted are made from inside the dynamic query itself:
DECLARE @COMMA_SEPARATED_KEYS varchar(MAX);
DROP TABLE IF EXISTS KV;
CREATE TABLE KV (id_person int, mykey varchar(30), myvalue int);
INSERT INTO KV VALUES
(1, 'age', 16),
(1, 'weight', 63),
(1, 'height', 175),
(2, 'age', 26),
(2, 'weight', 83),
(2, 'height', 185);
WITH cte(mykey) AS (
SELECT DISTINCT mykey FROM KV
)
SELECT @COMMA_SEPARATED_KEYS=STRING_AGG(mykey,',') FROM cte;
SELECT @COMMA_SEPARATED_KEYS AS keys;
DECLARE @ExecuteExpression varchar(MAX);
DROP TABLE IF EXISTS #Pivoted;
SET @ExecuteExpression = N'
SELECT *
INTO #Pivoted
FROM
(
SELECT
mykey,
myvalue,
id_person
FROM KV
) AS t
PIVOT(
MAX(t.myvalue)
FOR mykey IN (COMMA_SEPARATED_KEYS)
) AS pivot_table;
SELECT * FROM #Pivoted;
';
SET @ExecuteExpression = REPLACE(@ExecuteExpression, 'COMMA_SEPARATED_KEYS', @COMMA_SEPARATED_KEYS);
EXEC(@ExecuteExpression);
I dislike answering things that aren't a real solution...
...but when I encountered this same problem, I made below workaround:
function doThis() {
var err=0
if (cond1) { alert('ret1'); err=1; }
if (cond2) { alert('ret2'); err=1; }
if (cond3) { alert('ret3'); err=1; }
if (err < 1) {
// do the rest (or have it skipped)
}
}
Hope it can be useful for anyone.
Here is the simple ListView with different images. First of all you have to copy the different kinds of images and paste it to the res/drawable-hdpi in your project. Images should be (.png)file format. then copy this code.
In main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<TextView
android:id="@+id/textview"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<ListView
android:id="@+id/listview"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
create listview_layout.xml and paste this code
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal" >
<ImageView
android:id="@+id/flag"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:contentDescription="@string/hello"
android:paddingTop="10dp"
android:paddingRight="10dp"
android:paddingBottom="10dp" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:id="@+id/txt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="15dp"
android:text="TextView1" />
<TextView
android:id="@+id/cur"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="10dp"
android:text="TextView2" />
</LinearLayout>
In your Activity
package com.test;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import android.app.Activity;
import android.os.Bundle;
import android.widget.ListView;
import android.widget.SimpleAdapter;
public class SimpleListImageActivity extends Activity {
// Array of strings storing country names
String[] countries = new String[] {
"India",
"Pakistan",
"Sri Lanka",
"China",
"Bangladesh",
"Nepal",
"Afghanistan",
"North Korea",
"South Korea",
"Japan"
};
// Array of integers points to images stored in /res/drawable-hdpi/
//here you have to give image name which you already pasted it in /res/drawable-hdpi/
int[] flags = new int[]{
R.drawable.image1,
R.drawable.image2,
R.drawable.image3,
R.drawable.image4,
R.drawable.image5,
R.drawable.image6,
R.drawable.image7,
R.drawable.image8,
R.drawable.image9,
R.drawable.image10,
};
// Array of strings to store currencies
String[] currency = new String[]{
"Indian Rupee",
"Pakistani Rupee",
"Sri Lankan Rupee",
"Renminbi",
"Bangladeshi Taka",
"Nepalese Rupee",
"Afghani",
"North Korean Won",
"South Korean Won",
"Japanese Yen"
};
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
// Each row in the list stores country name, currency and flag
List<HashMap<String,String>> aList = new ArrayList<HashMap<String,String>>();
for(int i=0;i<10;i++){
HashMap<String, String> hm = new HashMap<String,String>();
hm.put("txt", "Country : " + countries[i]);
hm.put("cur","Currency : " + currency[i]);
hm.put("flag", Integer.toString(flags[i]) );
aList.add(hm);
}
// Keys used in Hashmap
String[] from = { "flag","txt","cur" };
// Ids of views in listview_layout
int[] to = { R.id.flag,R.id.txt,R.id.cur};
// Instantiating an adapter to store each items
// R.layout.listview_layout defines the layout of each item
SimpleAdapter adapter = new SimpleAdapter(getBaseContext(), aList, R.layout.listview_layout, from, to);
// Getting a reference to listview of main.xml layout file
ListView listView = ( ListView ) findViewById(R.id.listview);
// Setting the adapter to the listView
listView.setAdapter(adapter);
}
}
This is the full code.you can make changes to your need... Comments are welcome
public void CopyStream(Stream stream, string destPath)
{
using (var fileStream = new FileStream(destPath, FileMode.Create, FileAccess.Write))
{
stream.CopyTo(fileStream);
}
}
An alternative would be to use Font-Awesome for icons:
Open Font-Awesome on CDNJS and copy the CSS url of the latest version:
<link rel="stylesheet" href="<url>">
Or in CSS
@import url("<url>");
For example (note, the version will change):
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.css">
<i class="fa fa-bed"></i>
It contains a lot of icons!
Combining @comte's answer and dmdip's answer in Get index of a row of a pandas dataframe as an integer
df.tail(1).index.item()
gives you the value of the index.
Note that indices are not always well defined not matter they are multi-indexed or single indexed. Modifying dataframes using indices might result in unexpected behavior. We will have an example with a multi-indexed case but note this is also true in a single-indexed case.
Say we have
df = pd.DataFrame({'x':[1,1,3,3], 'y':[3,3,5,5]}, index=[11,11,12,12]).stack()
11 x 1
y 3
x 1
y 3
12 x 3
y 5 # the index is (12, 'y')
x 3
y 5 # the index is also (12, 'y')
df.tail(1).index.item() # gives (12, 'y')
Trying to access the last element with the index df[12, "y"]
yields
(12, y) 5
(12, y) 5
dtype: int64
If you attempt to modify the dataframe based on the index (12, y)
, you will modify two rows rather than one. Thus, even though we learned to access the value of last row's index, it might not be a good idea if you want to change the values of last row based on its index as there could be many that share the same index. You should use df.iloc[-1]
to access last row in this case though.
Reference
https://pandas.pydata.org/pandas-docs/stable/generated/pandas.Index.item.html
A promisified version of the most-awarded answer:
runCmd: (cmd, args) => {
return new Promise((resolve, reject) => {
var spawn = require('child_process').spawn
var child = spawn(cmd, args)
var resp = ''
child.stdout.on('data', function (buffer) { resp += buffer.toString() })
child.stdout.on('end', function () { resolve(resp) })
})
}
To use:
runCmd('ls').then(ret => console.log(ret))
For some applications you can use Fraction
instead of floating-point numbers.
>>> from fractions import Fraction
>>> Fraction(1, 3**54)
Fraction(1, 58149737003040059690390169)
(For other applications, there's decimal
, as suggested out by the other responses.)
If you have given same text name for both of your Id and Name properties you can give like document.getElementByName('frmMain')[index]
other wise object required error will come.And if you have only one table in your page you can use document.getElementBytag('table')[index]
.
EDIT:
You can replace the index according to your form, if its first form place 0 for index.
A non-jQuery way would be setting the value after the document is loaded:
<input type="text" id="foo" />
<script>
document.addEventListener('DOMContentLoaded', function(event) {
document.getElementById('foo').value = 'bar';
});
</script>
Here i have designed the list by the following design image. My listitem filename is Propertylistitem.xml and cellborder.xml is used drawable shape for the cellborder output, are show in this image. necessary code i added here.
FileName:propertylistitem.xml
<TableLayout... >
<TableRow... >
<TextView ...
android:background="@drawable/cellborder"
android:text="Amount"/>
</TableRow>
<TableRow... >
<TextView...
android:background="@drawable/cellborder"
android:text="5000"/>
</TableRow>
</TableLayout>
filename:cellborder.xml Here i just want only border in my design, so i put comment the solid color tag.
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle" >
<!-- <solid android:color="#dc6888"/> -->
<stroke android:width="0.1dp" android:color="#ffffff"
/>
<padding android:left="0dp" android:top="0dp"
android:right="0dp" android:bottom="0dp" />
</shape>
Please check this KB article : http://support.microsoft.com/kb/2259709 This issue occurs because Visio 2013 uses new UML and database modeling templates that are not used by Visio 2010 or by earlier versions of Visio. And it applies to both :
"Microsoft Visio Professional 2013" and "Microsoft Visio Standard 2013"
So upgrading to Pro might not help as well.
An example using DataTable:
DataTable dtblDataSource = new DataTable();
dtblDataSource.Columns.Add("DisplayMember");
dtblDataSource.Columns.Add("ValueMember");
dtblDataSource.Columns.Add("AdditionalInfo");
dtblDataSource.Rows.Add("Item 1", 1, "something useful 1");
dtblDataSource.Rows.Add("Item 2", 2, "something useful 2");
dtblDataSource.Rows.Add("Item 3", 3, "something useful 3");
combo1.Items.Clear();
combo1.DataSource = dtblDataSource;
combo1.DisplayMember = "DisplayMember";
combo1.ValueMember = "ValueMember";
//Get additional info
foreach (DataRowView drv in combo1.Items)
{
string strAdditionalInfo = drv["AdditionalInfo"].ToString();
}
//Get additional info for selected item
string strAdditionalInfo = (combo1.SelectedItem as DataRowView)["AdditionalInfo"].ToString();
//Get selected value
string strSelectedValue = combo1.SelectedValue.ToString();
To access a single value you can use the method iat
that is much faster than iloc
:
df['Btime'].iat[0]
Output:
1.2
function validate()
{
var a=documents.forms["yourformname"]["yourpasswordfieldname"].value;
var b=documents.forms["yourformname"]["yourconfirmpasswordfieldname"].value;
if(!(a==b))
{
alert("both passwords are not matching");
return false;
}
return true;
}
You can use
LEFT(column, length)
or
SUBSTRING(column, start index, length)
You can't. The array doesn't have a name.
You just have two references to the array, one in the variable and another in the third array.
There is no way to find all the references that exist for a given object.
If the name is important, then store it with the data.
var size = { data: ["S", "M", "L", "XL", "XXL"], name: 'size' };
var color = { data: ["Red", "Blue", "Green", "White", "Black"], name: 'color' };
var options = [size, color];
Obviously you'll have to modify the existing code which accesses the data (since you now have options[0].data[0]
instead of options[0][0]
but you also have options[0].name
).
In case anyone looks at this again, you can use this:
Sub test()
Dim sh As Worksheet
Set sh = ThisWorkbook.Sheets("Sheet1")
Dim k As Long
k = sh.Range("A1", sh.Range("A1").End(xlDown).End(xlDown).End(xlUp)).Rows.Count
End Sub
This is where the documentation is:
http://msdn.microsoft.com/en-us/library/dwhawy9k.aspx
The numeric ("N") format specifier converts a number to a string of the form "-d,ddd,ddd.ddd…", where "-" indicates a negative number symbol if required, "d" indicates a digit (0-9) ...
And this is where they talk about the default (2):
// Displays a negative value with the default number of decimal digits (2).
Int64 myInt = -1234;
Console.WriteLine( myInt.ToString( "N", nfi ) );
This will open a second cmd.exe window. If you want it to go away, replace the /K with /C.
Obviously, replace new_file_loc with whatever your new file location will be.
@echo off
for /F %%i in ('dir /B /O:-D *.txt') do (
call :open "%%i"
exit /B 0
)
:open
start "window title" "cmd /K copy %~1 new_file_loc"
exit /B 0
This code will help you.
UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc]
initWithTarget:self action:@selector(showHideNavbar:)];
[self.view addGestureRecognizer:tapGesture];
-(void) showHideNavbar:(id) sender
{
// write code to show/hide nav bar here
// check if the Navigation Bar is shown
if (self.navigationController.navigationBar.hidden == NO)
{
// hide the Navigation Bar
[self.navigationController setNavigationBarHidden:YES animated:YES];
}
// if Navigation Bar is already hidden
else if (self.navigationController.navigationBar.hidden == YES)
{
// Show the Navigation Bar
[self.navigationController setNavigationBarHidden:NO animated:YES];
}
}
something like so might work:
<script type="text/javascript">
$(document).ready(function(){
var $input = $("<input name='myField' type='text'>");
$('#section2').append($input);
});
</script>
<form>
<div id="section1"><!-- some controls--></div>
<div id="section2"><!-- for dynamic controls--></div>
</form>
From the PHP Manual:
Warning This extension was deprecated in PHP 5.5.0, and it was removed in PHP 7.0.0. Instead, the MySQLi or PDO_MySQL extension should be used. See also MySQL: choosing an API guide. Alternatives to this function include:
mysqli_connect()
PDO::__construct()
use MySQLi
or PDO
<?php
$con = mysqli_connect('localhost', 'username', 'password', 'database');
https://github.com/reoxey/benchmark
benchmark
speed comparison of MySQL & MongoDB in GOLANG1.6 & PHP5
system used for benchmark: DELL cpu i5 4th gen 1.70Ghz * 4 ram 4GB GPU ram 2GB
Speed comparison of RDBMS vs NoSQL for INSERT, SELECT, UPDATE, DELETE executing different number of rows 10,100,1000,10000,100000,1000000
Language used to execute is: PHP5 & Google fastest language GO 1.6
________________________________________________
GOLANG with MySQL (engine = MyISAM)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
INSERT
------------------------------------------------
num of rows time taken
------------------------------------------------
10 1.195444ms
100 6.075053ms
1000 47.439699ms
10000 483.999809ms
100000 4.707089053s
1000000 49.067407174s
SELECT
------------------------------------------------
num of rows time taken
------------------------------------------------
1000000 872.709µs
SELECT & DISPLAY
------------------------------------------------
num of rows time taken
------------------------------------------------
1000000 20.717354746s
UPDATE
------------------------------------------------
num of rows time taken
------------------------------------------------
1000000 2.309209968s
100000 257.411502ms
10000 26.73954ms
1000 3.483926ms
100 915.17µs
10 650.166µs
DELETE
------------------------------------------------
num of rows time taken
------------------------------------------------
1000000 6.065949ms
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
________________________________________________
GOLANG with MongoDB
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
INSERT
------------------------------------------------
num of rows time taken
------------------------------------------------
10 2.067094ms
100 8.841597ms
1000 106.491732ms
10000 998.225023ms
100000 8.98172825s
1000000 1m 29.63203158s
SELECT
------------------------------------------------
num of rows time taken
------------------------------------------------
1000000 5.251337439s
FIND & DISPLAY (with index declared)
------------------------------------------------
num of rows time taken
------------------------------------------------
1000000 21.540603252s
UPDATE
------------------------------------------------
num of rows time taken
------------------------------------------------
1 1.330954ms
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
________________________________________________
PHP5 with MySQL (engine = MyISAM)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
INSERT
------------------------------------------------
num of rows time taken
------------------------------------------------
10 0.0040680000000001s
100 0.011595s
1000 0.049718s
10000 0.457164s
100000 4s
1000000 42s
SELECT
------------------------------------------------
num of rows time taken
------------------------------------------------
1000000 <1s
SELECT & DISPLAY
------------------------------------------------
num of rows time taken
------------------------------------------------
1000000 20s
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
________________________________________________
PHP5 with MongoDB
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
INSERT
------------------------------------------------
num of rows time taken
------------------------------------------------
10 0.065744s
100 0.190966s
1000 0.2163s
10000 1s
100000 8s
1000000 78s
FIND
------------------------------------------------
num of rows time taken
------------------------------------------------
1000000 <1s
FIND & DISPLAY
------------------------------------------------
num of rows time taken
------------------------------------------------
1000000 7s
UPDATE
------------------------------------------------
num of rows time taken
------------------------------------------------
1000000 9s
((1,2,3,4),
(5,6,7,8),
(9,0,1,2))
Using tuples instead of lists makes it marginally harder to change the data structure in unwanted ways.
If you are going to do extensive use of those, you are best off wrapping a true number array in a class, so you can define methods and properties on them. (Or, you could NumPy, SciPy, ... if you are going to do your processing with those libraries.)
I foolishly had a wrapper div which had a width measured in pixels. The other browsers seemed to be intelligent enough to deal with this. Once I had converted the width to a percentage value, it worked fine on Safari mobile as well. Very annoying.
.page{width: 960px;}
to
.page{width:93.75%}
<div id="divPage" class="page">
</div>
Extending @Eponymous's answer: It's great, but doesn't provide a general syntax. Here's what I came up with:
// Common/EnumTools.h
#pragma once
#include <array>
namespace Common {
// Here we forward-declare metafunction for mapping enums to their values.
// Since C++<23 doesn't have reflection, you have to populate it yourself :-(
// Usage: After declaring enum class E, add this overload in the namespace of E:
// inline constexpr auto allValuesArray(const E&, Commob::EnumAllValuesTag) { return std::array{E::foo, E::bar}; }
// Then `AllValues<NS::E>` will call `allValuesArray(NS::E{}, EnumAllValuesTag)` which will resolve
// by ADL.
// Just be sure to keep it sync'd with your enum!
// Here's what you want to use in, e.g., loops: "for (auto val : Common::AllValues<MyEnum>) {"
struct EnumAllValuesTag {}; // So your allValuesArray function is clearly associated with this header.
template <typename Enum>
static inline constexpr auto AllValues = allValuesArray(Enum{}, EnumAllValuesTag{});
// ^ Just "constexpr auto" or "constexpr std::array<Enum, allValuesArray(Enum{}, EnumAllValuesTag{}).size()>" didn't work on all compilers I'm using, but this did.
} // namespace Common
then in your namespace:
#include "Common/EnumTools.h"
namespace MyNamespace {
enum class MyEnum {
foo,
bar = 4,
baz = 42,
};
// Making this not have to be in the `Common` namespace took some thinking,
// but is a critical feature since otherwise there's no hope in keeping it sync'd with the enum.
inline constexpr auto allValuesArray(const MyEnum&, Common::EnumAllValuesTag) {
return std::array{ MyEnum::foo, MyEnum::bar, MyEnum::baz };
}
} // namespace MyNamespace
then wherever you need to use it:
for (const auto& e : Common::AllValues<MyNamespace::MyEnum>) { ... }
so even if you've typedef'd:
namespace YourNS {
using E = MyNamespace::MyEnum;
} // namespace YourNS
for (const auto& e : Common::AllValues<YourNS::E>) { ... }
I can't think of anything much better, short of the actual language feature everyone looking at this page want.
Future work:
constexpr
function (and so a metafunction) that filters Common::AllValues<E>
to provide a Common::AllDistinctValues<E>
for the case of enums with repeated numerical values like enum { foo = 0, bar = 0 };
.switch
-covers-all-enum
-values to write allValuesArray
such that it errors if the enum has added a value.I think, that you have to declare the associated sheet!
Try something like this
objsheet(1).Cells[i,j].Value;
INSERT
INTO mytable (timestamp_field)
VALUES (CURRENT_TIMESTAMP)
CURRENT_TIMESTAMP
and SYSTIMESTAMP
are Oracle reserved words for this purpose. They are the timestamp analog of SYSDATE
.
use 'any'
dict = {}
if any(dict) :
# true
# dictionary is not empty
else :
# false
# dictionary is empty
Your code will behave strange if 'TZ' is not set properly, e.g. 'UTC' or 'Asia/Kolkata'
So, you need to do below
>>> import time, os
>>> d='2014-12-11 00:00:00'
>>> p='%Y-%m-%d %H:%M:%S'
>>> epoch = int(time.mktime(time.strptime(d,p)))
>>> epoch
1418236200
>>> os.environ['TZ']='UTC'
>>> epoch = int(time.mktime(time.strptime(d,p)))
>>> epoch
1418256000
Use app.use(bodyparser.json()); before routing. // . app.use("/api", routes);
Use SELECT or an output parameter. More can be found here: http://www.sqlteam.com/forums/topic.asp?TOPIC_ID=100201
For information purpose, _timestamp is now deprecated since 2.0.0-beta2.
Use date
type in your mapping.
A simple date mapping JSON from date
datatype doc:
{
"mappings": {
"my_type": {
"properties": {
"date": {
"type": "date"
}
}
}
}
}
You can also add a format
field in date
:
{
"mappings": {
"my_type": {
"properties": {
"date": {
"type": "date",
"format": "yyy-MM-dd HH:mm:ss||yyyy-MM-dd||epoch_millis"
}
}
}
}
}
For me, the cause was I opened the same file in both the Primary Editor and Assistant Editor at the same time. Once I closed Assistant Editor, it came through. (Xcode Version 7.2.1)
At the time of writing, none of the answers used a built-in function for this:
function addScheme($url, $scheme = 'http://')
{
return parse_url($url, PHP_URL_SCHEME) === null ?
$scheme . $url : $url;
}
echo addScheme('google.com'); // "http://google.com"
echo addScheme('https://google.com'); // "https://google.com"
See also: parse_url()
You don't need to use a property for that. Just override __setattr__
to make them read only.
class C(object):
def __init__(self, keys, values):
for (key, value) in zip(keys, values):
self.__dict__[key] = value
def __setattr__(self, name, value):
raise Exception("It is read only!")
Tada.
>>> c = C('abc', [1,2,3])
>>> c.a
1
>>> c.b
2
>>> c.c
3
>>> c.d
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
AttributeError: 'C' object has no attribute 'd'
>>> c.d = 42
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "<stdin>", line 6, in __setattr__
Exception: It is read only!
>>> c.a = 'blah'
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "<stdin>", line 6, in __setattr__
Exception: It is read only!
string[]
is an array (vector) of strings
string
is just a string (a list/array of characters)
Depending on how you want to convert this, the canonical answer could be:
return String.Join(" ", myStringArray);
return new []{ myString };
You have to give elevation prop to View
<View elevation={5} style={styles.container}>
<Text>Hello World !</Text>
</View>
styles can be added like this:
const styles = StyleSheet.create({
container:{
padding:20,
backgroundColor:'#d9d9d9',
shadowColor: "#000000",
shadowOpacity: 0.8,
shadowRadius: 2,
shadowOffset: {
height: 1,
width: 1
}
},
})
I fixed it with the following steps:
netsh http show urlacl
and see if your application http address/port is listed.netsh http delete urlacl url=[ADDRESS]
replacing [ADDRESS]
with the Reserved URL shown by the previous command. For example http://+:17560/
I ran into a very similar problem with my Xamarin Windows Phone 8.1 app. The reason JObject.Parse(json) would not work for me was because my Json had a beginning "[" and an ending "]". In order to make it work, I had to remove those two characters. From your example, it looks like you might have the same issue.
jsonResult = jsonResult.TrimStart(new char[] { '[' }).TrimEnd(new char[] { ']' });
I was then able to use the JObject.Parse(jsonResult) and everything worked.
Replace the dependency in the POM.xml file
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.2.3</version>
</dependency>
By the dependency
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.9.4</version>
</dependency>
The criterion to satisfy for providing the new shape is that 'The new shape should be compatible with the original shape'
numpy allow us to give one of new shape parameter as -1 (eg: (2,-1) or (-1,3) but not (-1, -1)). It simply means that it is an unknown dimension and we want numpy to figure it out. And numpy will figure this by looking at the 'length of the array and remaining dimensions' and making sure it satisfies the above mentioned criteria
Now see the example.
z = np.array([[1, 2, 3, 4],
[5, 6, 7, 8],
[9, 10, 11, 12]])
z.shape
(3, 4)
Now trying to reshape with (-1) . Result new shape is (12,) and is compatible with original shape (3,4)
z.reshape(-1)
array([ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12])
Now trying to reshape with (-1, 1) . We have provided column as 1 but rows as unknown . So we get result new shape as (12, 1).again compatible with original shape(3,4)
z.reshape(-1,1)
array([[ 1],
[ 2],
[ 3],
[ 4],
[ 5],
[ 6],
[ 7],
[ 8],
[ 9],
[10],
[11],
[12]])
The above is consistent with numpy
advice/error message, to use reshape(-1,1)
for a single feature; i.e. single column
Reshape your data using
array.reshape(-1, 1)
if your data has a single feature
New shape as (-1, 2). row unknown, column 2. we get result new shape as (6, 2)
z.reshape(-1, 2)
array([[ 1, 2],
[ 3, 4],
[ 5, 6],
[ 7, 8],
[ 9, 10],
[11, 12]])
Now trying to keep column as unknown. New shape as (1,-1). i.e, row is 1, column unknown. we get result new shape as (1, 12)
z.reshape(1,-1)
array([[ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]])
The above is consistent with numpy
advice/error message, to use reshape(1,-1)
for a single sample; i.e. single row
Reshape your data using
array.reshape(1, -1)
if it contains a single sample
New shape (2, -1). Row 2, column unknown. we get result new shape as (2,6)
z.reshape(2, -1)
array([[ 1, 2, 3, 4, 5, 6],
[ 7, 8, 9, 10, 11, 12]])
New shape as (3, -1). Row 3, column unknown. we get result new shape as (3,4)
z.reshape(3, -1)
array([[ 1, 2, 3, 4],
[ 5, 6, 7, 8],
[ 9, 10, 11, 12]])
And finally, if we try to provide both dimension as unknown i.e new shape as (-1,-1). It will throw an error
z.reshape(-1, -1)
ValueError: can only specify one unknown dimension
You typically want to render templates like this:
app.get('/', function(req, res){
res.render('index.ejs');
});
However you can also deliver static content - to do so use:
app.use(express.static(__dirname + '/public'));
Now everything in the /public
directory of your project will be delivered as static content at the root of your site e.g. if you place default.htm
in the public folder if will be available by visiting /default.htm
Take a look through the express API and Connect Static middleware docs for more info.
With Luxon (https://github.com/moment/luxon) :
import { DateTime } from 'luxon';
const week: number = DateTime.fromJSDate(new Date()).weekNumber;
I had a similar situation: multiple developers using the same private key, but I couldn't find mine anymore after upgrade to Lion. The very simple fix was to export the private key for the specific certificate (in my case the Development cert) from the other machine, move it to my computer and drag it into keychain access there. Xcode immediately picked it up and I was good to go.
EXPLAIN PLAN FOR
In SQL Developer, you don't have to use EXPLAIN PLAN FOR
statement. Press F10
or click the Explain Plan icon.
It will be then displayed in the Explain Plan window.
If you are using SQL*Plus then use DBMS_XPLAN.
For example,
SQL> EXPLAIN PLAN FOR
2 SELECT * FROM DUAL;
Explained.
SQL> SELECT * FROM TABLE(DBMS_XPLAN.DISPLAY);
PLAN_TABLE_OUTPUT
--------------------------------------------------------------------------
Plan hash value: 272002086
--------------------------------------------------------------------------
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
--------------------------------------------------------------------------
| 0 | SELECT STATEMENT | | 1 | 2 | 2 (0)| 00:00:01 |
| 1 | TABLE ACCESS FULL| DUAL | 1 | 2 | 2 (0)| 00:00:01 |
--------------------------------------------------------------------------
8 rows selected.
SQL>
Try using the property ForeColor. Like this :
TextBox1.ForeColor = Color.Red;
Try this one:
SELECT t1.* FROM Table1 t1
JOIN
(
SELECT category, MAX(date) AS MAXDATE
FROM Table1
GROUP BY category
) t2
ON T1.category = t2.category
AND t1.date = t2.MAXDATE
Yes there is retainAll
check out this
Set<Type> intersection = new HashSet<Type>(s1);
intersection.retainAll(s2);
With nginx you can send both tokens like this (even though it's against the standard):
Authorization: Basic basic-token,Bearer bearer-token
This works as long as the basic token is first - nginx successfully forwards it to the application server.
And then you need to make sure your application can properly extract the Bearer from the above string.
Extracting contents between two known values can be useful for later as well. So why not create an extension method for it. Here is what i do, Short and simple...
public static string GetBetween(this string content, string startString, string endString)
{
int Start=0, End=0;
if (content.Contains(startString) && content.Contains(endString))
{
Start = content.IndexOf(startString, 0) + startString.Length;
End = content.IndexOf(endString, Start);
return content.Substring(Start, End - Start);
}
else
return string.Empty;
}
Arrays in Java aren't dynamic, like collection classes. If you want a true collection that supports dynamic addition and deletion, use ArrayList<>. If you still want to live with vanilla arrays, find the index of string, construct a new array with size one less than the original, and use System.arraycopy()
to copy the elements before and after. Or write a copy loop with skip by hand, on small arrays the difference will be negligible.
Just a note for writing timeclock functions. For those looking for hours worked, a very simple change of this gets the hours plus the minutes are shown as a percentage of 60 as most payroll companies want it.
CAST ((julianday(clockOUT) - julianday(clockIN)) * 24 AS REAL) AS HoursWorked
Clock In Clock Out HoursWorked
2016-08-07 11:56 2016-08-07 18:46 6.83333332836628
connect
timeout has to be handled with a non-blocking socket (GNU LibC documentation on connect
). You get connect
to return immediately and then use select
to wait with a timeout for the connection to complete.
This is also explained here : Operation now in progress error on connect( function) error.
int wait_on_sock(int sock, long timeout, int r, int w)
{
struct timeval tv = {0,0};
fd_set fdset;
fd_set *rfds, *wfds;
int n, so_error;
unsigned so_len;
FD_ZERO (&fdset);
FD_SET (sock, &fdset);
tv.tv_sec = timeout;
tv.tv_usec = 0;
TRACES ("wait in progress tv={%ld,%ld} ...\n",
tv.tv_sec, tv.tv_usec);
if (r) rfds = &fdset; else rfds = NULL;
if (w) wfds = &fdset; else wfds = NULL;
TEMP_FAILURE_RETRY (n = select (sock+1, rfds, wfds, NULL, &tv));
switch (n) {
case 0:
ERROR ("wait timed out\n");
return -errno;
case -1:
ERROR_SYS ("error during wait\n");
return -errno;
default:
// select tell us that sock is ready, test it
so_len = sizeof(so_error);
so_error = 0;
getsockopt (sock, SOL_SOCKET, SO_ERROR, &so_error, &so_len);
if (so_error == 0)
return 0;
errno = so_error;
ERROR_SYS ("wait failed\n");
return -errno;
}
}
git checkout {branch-name} -- {file-name}
This will use the file from the branch of choice.
I like this because posh-git
autocomplete works great with this. It also removes any ambiguity as to which branch is remote and which is local.
And --theirs
didn't work for me anyways.
According to Javascript Date Documentation, you can easily do this way:
var twoHoursBefore = new Date();
twoHoursBefore.setHours(twoHoursBefore.getHours() - 2);
And don't worry about if hours you set will be out of 0..23
range.
Date() object will update the date accordingly.
Main class is configurable in pom.xml
<properties>
<start-class>com.bt.collab.alu.api.webapp.Application</start-class>
</properties>
In my case this was happening with a Laravel queue worker. The system logs did not mention any killing so I looked further and it turned out that the worker was basically killing itself because of a job that exceeded the memory limit (which is set to 128M by default).
Running the queue worker with --timeout=600
and --memory=1024
fixed the problem for me.
pymemcompat.h:10: fatal error: Python.h: ?????????
Boy you should post your error log with LANG=C
or people can't get the real cause from your log. The log above says: No such file or directory.
That means you should install the develop package of Python. That's usually "python-dev" on Debian flavored distro, and "python-devel" on RHEL flavored distro.
Use toFixed
to convert it to a string with some decimal places shaved off, and then convert it back to a number.
+(0.1 + 0.2).toFixed(12) // 0.3
It looks like IE's toFixed
has some weird behavior, so if you need to support IE something like this might be better:
Math.round((0.1 + 0.2) * 1e12) / 1e12
In C99, you can use setjmp
/longjmp
for non-local control flow.
Within a single scope, the generic, structured coding pattern for C in the presence of multiple resource allocations and multiple exits uses goto
, like in this example. This is similar to how C++ implements destructor calls of automatic objects under the hood, and if you stick to this diligently, it should allow you for a certain degree of cleanness even in complex functions.
Since Qt 5.8, we now have QDateTime::currentSecsSinceEpoch()
to deliver the seconds directly, a.k.a. as real Unix timestamp. So, no need to divide the result by 1000 to get seconds anymore.
Credits: also posted as comment to this answer. However, I think it is easier to find if it is a separate answer.
Attention:
Make sure that you run spark in local mode when you load data from local(sc.textFile("file:///path to the file/")
) or you will get error like this Caused by: java.io.FileNotFoundException: File file:/data/sparkjob/config2.properties does not exist
.
Becasuse executors which run on different workers will not find this file in it's local path.
The concept of prototypal
inheritance is one of the most complicated for many developers. Let's try to understand the root of problem to understand prototypal inheritance
better. Let's start with a plain
function.
If we use a new
operator on the Tree function
, we call it as a constructor
function.
Every JavaScript
function has a prototype
. When you log the Tree.prototype
, you get...
If you look at the above console.log()
output, you could a see a constructor property on Tree.prototype
and a __proto__
property too. The __proto__
represents the prototype
that this function
is based off, and since this is just a plain JavaScript function
with no inheritance
set up yet, it refers to the Object prototype
which is something just built in to JavaScript...
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/prototype
This has things like .toString, .toValue, .hasOwnProperty
etc...
__proto__
which was brought my mozilla is deprecated and is replaced by Object.getPrototypeOf
method to get the object's prototype
.
Object.getPrototypeOf(Tree.prototype); // Object {}
Let's add a method to our Tree
prototype
.
We have modified the Root
and added a function
branch to it.
That means when you create an instance
of Tree
, you can call it's branch
method.
We can also add primitives
or objects
to our Prototype
.
Let's add a child-tree
to our Tree
.
Here the Child
inherits its prototype
from Tree, what we are doing here is using Object.create()
method to create a new object based off what you pass, here it is Tree.prototype
. In this case what we're doing is setting the prototype of Child to a new object that looks identical to the Tree
prototype. Next we are setting the Child's constructor to Child
, if we don't it would point to Tree()
.
Child
now has its own prototype
, its __proto__
points to Tree
and Tree's prototype
points to base Object
.
Child
|
\
\
Tree.prototype
- branch
|
|
\
\
Object.prototype
-toString
-valueOf
-etc., etc.
Now you create an instance
of Child
and call branch
which is originally available in Tree
. We haven't actually defined our branch
on the Child prototype
. BUT, in the Root prototype
which Child inherits from.
In JS everything is not an object, everything can act like an object.
Javascript
has primitives like strings, number, booleans, undefined, null.
They are not object(i.e reference types)
, but certainly can act like an object
. Let's look at an example here.
In the first line of this listing, a primitive
string value is assigned to name. The second line treats name like an object
and calls charAt(0)
using dot notation.
This is what happens behind the scenes:
// what the JavaScript
engine does
The String object
exists only for one statement before it’s destroyed (a process called autoboxing
). Let's again get back to our prototypal
inheritance
.
Javascript
supports inheritance via delegation
based on
prototypes
.Function
has a prototype
property, which refers to another
object.properties/functions
are looked from the object
itself or via
prototype
chain if it does not existA prototype
in JS is an object which yields
you to the parent of another object
. [ie.. delegation] Delegation
means that if you are unable to do something, you’ll tell someone else to do it for you.
https://jsfiddle.net/say0tzpL/1/
If you look up the above fiddle, dog has access to toString
method, but its not available in it, but available via the prototype chain which delegates to Object.prototype
If you look at the below one, we are trying to access the call
method which is available in every function
.
https://jsfiddle.net/rknffckc/
If you look up the above fiddle, Profile
Function has access to call
method, but its not available in it, but available via the prototype chain which delegates to Function.prototype
Note: prototype
is a property of the function constructor, whereas __proto__
is a property of the objects constructed from the function constructor. Every function comes with a prototype
property whose value is an empty object
. When we create an instance of the function, we get an internal property [[Prototype]]
or __proto__
whose reference is the prototype of the Function constructor
.
The above diagram looks bit complicated, but brings out the whole picture on how prototype chaining
works. Let's walk through this slowly:
There are two instance b1
and b2
, whose constructor is Bar
and parent is Foo and has two methods from prototype chain identify
and speak
via Bar
and Foo
https://jsfiddle.net/kbp7jr7n/
If you look up the code above, we have Foo
constructor who has the method identify()
and Bar
constructor which has speak
method. We create two Bar
instance b1
and b2
whose parent type is Foo
. Now while calling speak
method of Bar
, we are able to identify the who is calling the speak via prototype
chain.
Bar
now has all the methods of Foo
which are defined in its prototype
. Let's dig further in understanding the Object.prototype
and Function.prototype
and how they are related. If you look up the constructor of Foo
, Bar
and Object
are Function constructor
.
The prototype
of Bar
is Foo
, prototype
of Foo
is Object
and if you look closely the prototype
of Foo
is related to Object.prototype
.
Before we close this down, let's just wrap with a small piece of code here to summarize everything above. We are using instanceof
operator here to check whether an object
has in its prototype
chain the prototype
property of a constructor
which below summarizes the entire big diagram.
I hope this add's some information, I know this kinda could be big to grasp... in simple words its it's just objects linked to objects!!!!
this works:
CSS:
.show_hide {
display:none;
}
.plus:after {
content:" +";
}
.minus:after {
content:" -";
}
jQuery:
$(document).ready(function(){
$(".slidingDiv").hide();
$(".show_hide").addClass("plus").show();
$('.show_hide').toggle(
function(){
$(".slidingDiv").slideDown();
$(this).addClass("minus");
$(this).removeClass("plus");
},
function(){
$(".slidingDiv").slideUp();
$(this).addClass("plus");
$(this).removeClass("minus");
}
);
});
HTML:
<a href="#" class="show_hide">Show/hide</a>
<div class="slidingDiv" style="display: block;">
Check out the updated jQuery plugin for doing this: <a href="http://papermashup.com/jquery-show-hide-plugin/" class="show_hide" target="_blank" style="display: inline;">jQuery Show / Hide Plugin</a>
</div>
in the CSS, instead of content:" +";
You can put an background-image
(with background-position:right center;
and background-repeat:no-repeat
and maybe making the .show_hide
displayed as block and give him a width, so that the bg-image is not overlayed by the link-text itself).
yes,the sorting proceed differently. in first scenario, orders based on column1 and in addition to that process further by sorting colmun2 based on column1 .. in second scenario ,it orders completely based on column 1 only... please proceed with a simple example...u will get quickly..
There is an OFFSET as well that should do the trick:
SELECT column FROM table
LIMIT 10 OFFSET 10
The getApplication()
method is located in the Activity
class, that's why you can't access it from your helper class.
If you really need to access your application context from your helper, you should hold a reference to the activity's context and pass it on invocation to the helper.
This related question's answer provided the solution for me... it was just a dumb mistake:
Remember to commit first!
https://stackoverflow.com/a/7572252
If you have not yet committed to your local repo, there is nothing to push, but the Git error message you get back doesn't help you too much.
I know you've found another solution, but for those like me who find this question, looking for the same thing, it can be achieved with requests as follows:
Firstly, as Marcus did, check the source of the login form to get three pieces of information - the url that the form posts to, and the name attributes of the username and password fields. In his example, they are inUserName and inUserPass.
Once you've got that, you can use a requests.Session()
instance to make a post request to the login url with your login details as a payload. Making requests from a session instance is essentially the same as using requests normally, it simply adds persistence, allowing you to store and use cookies etc.
Assuming your login attempt was successful, you can simply use the session instance to make further requests to the site. The cookie that identifies you will be used to authorise the requests.
Example
import requests
# Fill in your details here to be posted to the login form.
payload = {
'inUserName': 'username',
'inUserPass': 'password'
}
# Use 'with' to ensure the session context is closed after use.
with requests.Session() as s:
p = s.post('LOGIN_URL', data=payload)
# print the html returned or something more intelligent to see if it's a successful login page.
print p.text
# An authorised request.
r = s.get('A protected web page url')
print r.text
# etc...
=SUMPRODUCT( (MONTH($A$2:$A$6)=1) * ($B$2:$B$6) )
Explanation:
(MONTH($A$2:$A$6)=1)
creates an array of 1 and 0, it's 1 when the
month is january, thus in your example the returned array would be [1, 1, 1, 0, 0]
SUMPRODUCT
first multiplies each value of the array created in the above step with values of the array ($B$2:$B$6)
, then it sums them. Hence in
your example it does this: (1 * 430) + (1 * 96) + (1 * 440) + (0 * 72.10) + (0 * 72.30)
This works also in OpenOffice and Google Spreadsheets
The 'Digicert certificate installation checker' is often helpful in situations like this.
I was able to verify the SSL cert being attempted was the one I was expecting by comparing the serial number.
For me @Jason Kleban answer was the actual problem, but this can be a very useful utility to check your basic assertions about what certificate is being loaded.
BEGIN;
INSERT INTO test_b (price_sum)
SELECT price
FROM test_a;
INSERT INTO test_c (price_summ)
SELECT price
FROM test_a;
COMMIT;
I recently ran into this problem and ended up using react-native-extended-stylesheet
You can set you rem
value and additional size conditions based on screen size. As per the docs:
// component
const styles = EStyleSheet.create({
text: {
fontSize: '1.5rem',
marginHorizontal: '2rem'
}
});
// app entry
let {height, width} = Dimensions.get('window');
EStyleSheet.build({
$rem: width > 340 ? 18 : 16
});
This is not valid TypeScript code. You can not have method invocations in the body of a class.
// INVALID CODE
export class AppComponent {
public n: number = 1;
setTimeout(function() {
n = n + 10;
}, 1000);
}
Instead move the setTimeout
call to the constructor
of the class. Additionally, use the arrow function =>
to gain access to this
.
export class AppComponent {
public n: number = 1;
constructor() {
setTimeout(() => {
this.n = this.n + 10;
}, 1000);
}
}
In TypeScript, you can only refer to class properties or methods via this
. That's why the arrow function =>
is important.
og:title
is one of the open graph meta tags. og:...
properties define objects in a social graph. They are used for example by Facebook.
og:title
stands for the title of your object as it should appear within the graph (see here for more http://ogp.me/ )
OK, here's what we do: open the file, read it line by line, and split it by tabs. Then we grab the second integer and loop through the rest to find the path.
StreamReader reader = File.OpenText("filename.txt");
string line;
while ((line = reader.ReadLine()) != null)
{
string[] items = line.Split('\t');
int myInteger = int.Parse(items[1]); // Here's your integer.
// Now let's find the path.
string path = null;
foreach (string item in items)
{
if (item.StartsWith("item\\") && item.EndsWith(".ddj"))
path = item;
}
// At this point, `myInteger` and `path` contain the values we want
// for the current line. We can then store those values or print them,
// or anything else we like.
}
Prolog program actually is big condition for "if" with "then" which prints "Goal is reached" and "else" which prints "No sloutions was found". A, B
means "A is true and B is true", most of prolog systems will not try to satisfy "B" if "A" is not reachable (i.e. X=3, write('X is 3'),nl
will print 'X is 3' when X=3, and will do nothing if X=2).
Here is a function you can use to parse AJAX responses, especially if you use minifiedjs and want it to execute the returned Javascript or just want to parse the scripts without adding them to the DOM, it handles exception errors as well. I used this code in php4sack library and it is useful outside of the library.
function parseScript(_source) {
var source = _source;
var scripts = new Array();
// Strip out tags
while(source.toLowerCase().indexOf("<script") > -1 || source.toLowerCase().indexOf("</script") > -1) {
var s = source.toLowerCase().indexOf("<script");
var s_e = source.indexOf(">", s);
var e = source.toLowerCase().indexOf("</script", s);
var e_e = source.indexOf(">", e);
// Add to scripts array
scripts.push(source.substring(s_e+1, e));
// Strip from source
source = source.substring(0, s) + source.substring(e_e+1);
}
// Loop through every script collected and eval it
for(var i=0; i<scripts.length; i++) {
try {
if (scripts[i] != '')
{
try { //IE
execScript(scripts[i]);
}
catch(ex) //Firefox
{
window.eval(scripts[i]);
}
}
}
catch(e) {
// do what you want here when a script fails
// window.alert('Script failed to run - '+scripts[i]);
if (e instanceof SyntaxError) console.log (e.message+' - '+scripts[i]);
}
}
// Return the cleaned source
return source;
}
Other regex answers in this page will accept an IP with a number over 255.
This regex will avoid this problem:
import re
def validate_ip(ip_str):
reg = r"^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$"
if re.match(reg, ip_str):
return True
else:
return False
We can handle the different windows by moving between named windows using the “switchTo” method:
driver.switch_to.window("windowName")
<a href="somewhere.html" target="windowName">Click here to open a new window</a>
Alternatively, you can pass a “window handle” to the “switchTo().window()” method. Knowing this, it’s possible to iterate over every open window like so:
for handle in driver.window_handles:
driver.switch_to.window(handle)
You split the string entry of the list. l[0].strip()
extension UIViewController {
var topbarHeight: CGFloat {
return
(view.window?.safeAreaInsets.top ?? 0) +
(view.window?.windowScene?.statusBarManager?.statusBarFrame.height ?? 0.0) +
(self.navigationController?.navigationBar.frame.height ?? 0.0)
}
}
PHPUnit is hiding the output with ob_start()
. We can disable it temporarily.
public function log($something = null)
{
ob_end_clean();
var_dump($something);
ob_start();
}
Maybe it will useful:
function parseJson(code)
{
try {
return JSON.parse(code);
} catch (e) {
return code;
}
}
function parseJsonJQ(code)
{
try {
return $.parseJSON(code);
} catch (e) {
return code;
}
}
var str = "{\"a\":1,\"b\":2,\"c\":3,\"d\":4,\"e\":5}";
alert(typeof parseJson(str));
alert(typeof parseJsonJQ(str));
var str_b = "c";
alert(typeof parseJson(str_b));
alert(typeof parseJsonJQ(str_b));
output:
IE7: string,object,string,string
CHROME: object,object,string,string
find($id)
takes an id and returns a single model. If no matching model exist, it returns null
.
findOrFail($id)
takes an id and returns a single model. If no matching model exist, it throws an error1.
first()
returns the first record found in the database. If no matching model exist, it returns null
.
firstOrFail()
returns the first record found in the database. If no matching model exist, it throws an error1.
get()
returns a collection of models matching the query.
pluck($column)
returns a collection of just the values in the given column. In previous versions of Laravel this method was called lists
.
toArray()
converts the model/collection into a simple PHP array.
Note: a collection is a beefed up array. It functions similarly to an array, but has a lot of added functionality, as you can see in the docs.
Unfortunately, PHP doesn't let you use a collection object everywhere you can use an array. For example, using a collection in a foreach
loop is ok, put passing it to array_map
is not. Similarly, if you type-hint an argument as array
, PHP won't let you pass it a collection. Starting in PHP 7.1, there is the iterable
typehint, which can be used to accept both arrays and collections.
If you ever want to get a plain array from a collection, call its all()
method.
1 The error thrown by the findOrFail
and firstOrFail
methods is a ModelNotFoundException
. If you don't catch this exception yourself, Laravel will respond with a 404, which is what you want most of the time.
Rules for padding:
Why Rule 2: Consider the following struct,
If we were to create an array(of 2 structs) of this struct, No padding will be required at the end:
Therefore, size of struct = 8 bytes
Assume we were to create another struct as below:
If we were to create an array of this struct, there are 2 possibilities, of the number of bytes of padding required at the end.
A. If we add 3 bytes at the end and align it for int and not Long:
B. If we add 7 bytes at the end and align it for Long:
The start address of the second array is a multiple of 8(i.e 24). The size of the struct = 24 bytes
Therefore, by aligning the start address of the next array of the struct to a multiple of the largest member(i.e if we were to create an array of this struct, the first address of the second array must start at an address which is a multiple of the largest member of the struct. Here it is, 24(3 * 8)), we can calculate the number of padding bytes required at the end.
I was working with a embedded device which had neither perl, awk or python and did it with sed instead. It supports multiple spaces before the first word (which the cut
and bash
solutions did not handle).
VARIABLE=" first_word_with_spaces_before_and_after another_word "
echo $VARIABLE | sed 's/ *\([^ ]*\).*/\1/'
This was very useful when grepping ps
for process IDs since the other solutions here using only bash was not able to remove the first spaces which ps
uses to align.
You can convert a number to a string with n decimal places using the SPRINTF command:
>> x = 1.23; >> sprintf('%0.6f', x) ans = 1.230000 >> x = 1.23456789; >> sprintf('%0.6f', x) ans = 1.234568
This answer is counting that the second parameter is useless when calling removeAttr! (as it was when this answer was posted) Do not use this otherwise!
Can't beat RienNeVaPlus's clean answer, but it does the job as well, it's basically a more compressed way to do the ternary operation:
$('.list-sort')[$('.list-sort').hasAttr('colspan') ?
'removeAttr' : 'attr']('colspan', 6);
an extra variable can be used in these cases, when you need to use the reference more than once:
var $listSort = $('.list-sort');
$listSort[$listSort.hasAttr('colspan') ? 'removeAttr' : 'attr']('colspan', 6);
To insert tab space
between two words/sentences I usually use
 
and  
Try this:
$("#location").change(function(){
var element = $("option:selected", this);
var myTag = element.attr("myTag");
$('#setMyTag').val(myTag);
});
In the callback function for change()
, this
refers to the select, not to the selected option.
You can covert numpy.ndarray
to object
using astype(object)
This will work:
>>> a = [np.zeros((224,224,3)).astype(object), np.zeros((224,224,3)).astype(object), np.zeros((224,224,13)).astype(object)]
Unless the role was made dbo, db_owner or db_datawriter, it won't have permission to edit any data. If you want to grant full edit permissions to a single table, do this:
GRANT ALL ON table1 TO doctor
Users in that role will have no permissions whatsoever to other tables (not even read).
Range("A1").value = Environ("Username")
This is better than Application.Username
, which doesn't always supply the Windows username. Thanks to Kyle for pointing this out.
Application Username
is the name of the User set in Excel > Tools > Options Environ("Username")
is the name you registered for Windows; see Control Panel >SystemI am using OpsWorks and wanted to register a new existing Linux instance from my Windows machine on AWS Cli.
Frist problem was, that I had to use my Putty generated .pkk file.
Second problem was that I needed to quote the absolute path to that .pkk file like that:
aws opsworks register --infrastructure-class ec2 --ssh-username ec2-user --ssh-private-key "C:\key.ppk"
Having learnt about itertools in J.F. Sebastian answer I decided to take it a step further and write a parmap
package that takes care about parallelization, offering map
and starmap
functions on python-2.7 and python-3.2 (and later also) that can take any number of positional arguments.
Installation
pip install parmap
How to parallelize:
import parmap
# If you want to do:
y = [myfunction(x, argument1, argument2) for x in mylist]
# In parallel:
y = parmap.map(myfunction, mylist, argument1, argument2)
# If you want to do:
z = [myfunction(x, y, argument1, argument2) for (x,y) in mylist]
# In parallel:
z = parmap.starmap(myfunction, mylist, argument1, argument2)
# If you want to do:
listx = [1, 2, 3, 4, 5, 6]
listy = [2, 3, 4, 5, 6, 7]
param = 3.14
param2 = 42
listz = []
for (x, y) in zip(listx, listy):
listz.append(myfunction(x, y, param1, param2))
# In parallel:
listz = parmap.starmap(myfunction, zip(listx, listy), param1, param2)
I have uploaded parmap to PyPI and to a github repository.
As an example, the question can be answered as follows:
import parmap
def harvester(case, text):
X = case[0]
text+ str(X)
if __name__ == "__main__":
case = RAW_DATASET # assuming this is an iterable
parmap.map(harvester, case, "test", chunksize=1)
First off I should point out that css animations would probably work best if you are doing this a lot but I ended getting the desired effect by wrapping .scrollLeft inside .animate
$('.swipeRight').click(function()
{
$('.swipeBox').animate( { scrollLeft: '+=460' }, 1000);
});
$('.swipeLeft').click(function()
{
$('.swipeBox').animate( { scrollLeft: '-=460' }, 1000);
});
The second parameter is speed, and you can also add a third parameter if you are using smooth scrolling of some sort.
I have used ng-idle for this and added a little logout and token null code and it is working fine, you can try this. Thanks @HackedByChinese for making such a nice module.
In IdleTimeout i have just deleted my session data and token.
Here is my code
$scope.$on('IdleTimeout', function () {
closeModals();
delete $window.sessionStorage.token;
$state.go("login");
$scope.timedout = $uibModal.open({
templateUrl: 'timedout-dialog.html',
windowClass: 'modal-danger'
});
});
Celery is a distributed task queue, built on AMQP (RabbitMQ). It also handles periodic tasks in a cron-like fashion (see periodic tasks). Depending on your app, it might be worth a gander.
Celery is pretty easy to set up with django (docs), and periodic tasks will actually skip missed tasks in case of a downtime. Celery also has built-in retry mechanisms, in case a task fails.
I'm using htop; it's a very good console program similar to Windows Task Manager.
You can use find with a Predicate as follows:
list.Find(x => x.Id == IdToFind);
This will return the first object in the list which meets the conditions defined by the predicate (ie in my example I am looking for an object with an ID).
Why do you need to attach it to the HTML? Just bind the function with hover
$("div.system_box").hover(function(){ mousin },
function() { mouseout });
If you do insist to have JS references inside the html, which is usualy a bad idea you can use:
onmouseover="yourJavaScriptCode()"
<div class="system_box" data-target="sms_box">
...
$("div.system_box").click(function(){ slideonlyone($(this).attr("data-target")); });
A convenient way to calculate percentiles for a one-dimensional numpy sequence or matrix is by using numpy.percentile <https://docs.scipy.org/doc/numpy/reference/generated/numpy.percentile.html>. Example:
import numpy as np
a = np.array([0,1,2,3,4,5,6,7,8,9,10])
p50 = np.percentile(a, 50) # return 50th percentile, e.g median.
p90 = np.percentile(a, 90) # return 90th percentile.
print('median = ',p50,' and p90 = ',p90) # median = 5.0 and p90 = 9.0
However, if there is any NaN value in your data, the above function will not be useful. The recommended function to use in that case is the numpy.nanpercentile <https://docs.scipy.org/doc/numpy/reference/generated/numpy.nanpercentile.html> function:
import numpy as np
a_NaN = np.array([0.,1.,2.,3.,4.,5.,6.,7.,8.,9.,10.])
a_NaN[0] = np.nan
print('a_NaN',a_NaN)
p50 = np.nanpercentile(a_NaN, 50) # return 50th percentile, e.g median.
p90 = np.nanpercentile(a_NaN, 90) # return 90th percentile.
print('median = ',p50,' and p90 = ',p90) # median = 5.5 and p90 = 9.1
In the two options presented above, you can still choose the interpolation mode. Follow the examples below for easier understanding.
import numpy as np
b = np.array([1,2,3,4,5,6,7,8,9,10])
print('percentiles using default interpolation')
p10 = np.percentile(b, 10) # return 10th percentile.
p50 = np.percentile(b, 50) # return 50th percentile, e.g median.
p90 = np.percentile(b, 90) # return 90th percentile.
print('p10 = ',p10,', median = ',p50,' and p90 = ',p90)
#p10 = 1.9 , median = 5.5 and p90 = 9.1
print('percentiles using interpolation = ', "linear")
p10 = np.percentile(b, 10,interpolation='linear') # return 10th percentile.
p50 = np.percentile(b, 50,interpolation='linear') # return 50th percentile, e.g median.
p90 = np.percentile(b, 90,interpolation='linear') # return 90th percentile.
print('p10 = ',p10,', median = ',p50,' and p90 = ',p90)
#p10 = 1.9 , median = 5.5 and p90 = 9.1
print('percentiles using interpolation = ', "lower")
p10 = np.percentile(b, 10,interpolation='lower') # return 10th percentile.
p50 = np.percentile(b, 50,interpolation='lower') # return 50th percentile, e.g median.
p90 = np.percentile(b, 90,interpolation='lower') # return 90th percentile.
print('p10 = ',p10,', median = ',p50,' and p90 = ',p90)
#p10 = 1 , median = 5 and p90 = 9
print('percentiles using interpolation = ', "higher")
p10 = np.percentile(b, 10,interpolation='higher') # return 10th percentile.
p50 = np.percentile(b, 50,interpolation='higher') # return 50th percentile, e.g median.
p90 = np.percentile(b, 90,interpolation='higher') # return 90th percentile.
print('p10 = ',p10,', median = ',p50,' and p90 = ',p90)
#p10 = 2 , median = 6 and p90 = 10
print('percentiles using interpolation = ', "midpoint")
p10 = np.percentile(b, 10,interpolation='midpoint') # return 10th percentile.
p50 = np.percentile(b, 50,interpolation='midpoint') # return 50th percentile, e.g median.
p90 = np.percentile(b, 90,interpolation='midpoint') # return 90th percentile.
print('p10 = ',p10,', median = ',p50,' and p90 = ',p90)
#p10 = 1.5 , median = 5.5 and p90 = 9.5
print('percentiles using interpolation = ', "nearest")
p10 = np.percentile(b, 10,interpolation='nearest') # return 10th percentile.
p50 = np.percentile(b, 50,interpolation='nearest') # return 50th percentile, e.g median.
p90 = np.percentile(b, 90,interpolation='nearest') # return 90th percentile.
print('p10 = ',p10,', median = ',p50,' and p90 = ',p90)
#p10 = 2 , median = 5 and p90 = 9
If your input array only consists of integer values, you might be interested in the percentil answer as an integer. If so, choose interpolation mode such as ‘lower’, ‘higher’, or ‘nearest’.
Recursion is used in things like BSP trees for collision detection in game development (and other similar areas).
The URL structure you're referring to is called the REST endpoint, as opposed to the Web Site Endpoint.
Note: Since this answer was originally written, S3 has rolled out dualstack support on REST endpoints, using new hostnames, while leaving the existing hostnames in place. This is now integrated into the information provided, below.
If your bucket is really in the us-east-1 region of AWS -- which the S3 documentation formerly referred to as the "US Standard" region, but was subsequently officially renamed to the "U.S. East (N. Virginia) Region" -- then http://s3-us-east-1.amazonaws.com/bucket/
is not the correct form for that endpoint, even though it looks like it should be. The correct format for that region is either http://s3.amazonaws.com/bucket/
or http://s3-external-1.amazonaws.com/bucket/
.¹
The format you're using is applicable to all the other S3 regions, but not US Standard US East (N. Virginia) [us-east-1].
S3 now also has dual-stack endpoint hostnames for the REST endpoints, and unlike the original endpoint hostnames, the names of these have a consistent format across regions, for example s3.dualstack.us-east-1.amazonaws.com
. These endpoints support both IPv4 and IPv6 connectivity and DNS resolution, but are otherwise functionally equivalent to the existing REST endpoints.
If your permissions and configuration are set up such that the web site endpoint works, then the REST endpoint should work, too.
However... the two endpoints do not offer the same functionality.
Roughly speaking, the REST endpoint is better-suited for machine access and the web site endpoint is better suited for human access, since the web site endpoint offers friendly error messages, index documents, and redirects, while the REST endpoint doesn't. On the other hand, the REST endpoint offers HTTPS and support for signed URLs, while the web site endpoint doesn't.
Choose the correct type of endpoint (REST or web site) for your application:
http://docs.aws.amazon.com/AmazonS3/latest/dev/WebsiteEndpoints.html#WebsiteRestEndpointDiff
¹ s3-external-1.amazonaws.com
has been referred to as the "Northern Virginia endpoint," in contrast to the "Global endpoint" s3.amazonaws.com
. It was unofficially possible to get read-after-write consistency on new objects in this region if the "s3-external-1" hostname was used, because this would send you to a subset of possible physical endpoints that could provide that functionality. This behavior is now officially supported on this endpoint, so this is probably the better choice in many applications. Previously, s3-external-2
had been referred to as the "Pacific Northwest endpoint" for US-Standard, though it is now a CNAME in DNS for s3-external-1
so s3-external-2
appears to have no purpose except backwards-compatibility.
If we load script in partial view then this issue coming
This solution working fine for me
As you say, you don't need to use a regex for this. You can use rstrip
.
my_file_path = my_file_path.rstrip('/')
If there is more than one /
at the end, this will remove all of them, e.g. '/file.jpg//'
-> '/file.jpg'
. From your question, I assume that would be ok.
Your example as written works perfectly in Chrome 11 for me. Perhaps your browser just doesn't support the :not()
selector?
You may need to use JavaScript or similar to accomplish this cross-browser. jQuery implements :not() in its selector API.
put .gitignore in your main catalog
git status (you will see which files you can commit)
git add -A
git commit -m "message"
git push
You can do something like this to count from a list of things.
IList<String> names = new List<string>() { "ToString", "Format" };
IEnumerable<String> methodNames = typeof(String).GetMethods().Select(x => x.Name);
int count = methodNames.Where(x => names.Contains(x)).Count();
To count a single element
string occur = "Test1";
IList<String> words = new List<string>() {"Test1","Test2","Test3","Test1"};
int count = words.Where(x => x.Equals(occur)).Count();
The pg documentation at NOTES say
The path will be interpreted relative to the working directory of the server process (normally the cluster's data directory), not the client's working directory.
So, gerally, using psql
or any client, even in a local server, you have problems ... And, if you're expressing COPY command for other users, eg. at a Github README, the reader will have problems ...
The only way to express relative path with client permissions is using STDIN,
When STDIN or STDOUT is specified, data is transmitted via the connection between the client and the server.
as remembered here:
psql -h remotehost -d remote_mydb -U myuser -c \
"copy mytable (column1, column2) from STDIN with delimiter as ','" \
< ./relative_path/file.csv
Here's a solution if you want to check multiple conditions:
/* Handler to check multiple conditions
*/
Handlebars.registerHelper('checkIf', function (v1,o1,v2,mainOperator,v3,o2,v4,options) {
var operators = {
'==': function(a, b){ return a==b},
'===': function(a, b){ return a===b},
'!=': function(a, b){ return a!=b},
'!==': function(a, b){ return a!==b},
'<': function(a, b){ return a<b},
'<=': function(a, b){ return a<=b},
'>': function(a, b){ return a>b},
'>=': function(a, b){ return a>=b},
'&&': function(a, b){ return a&&b},
'||': function(a, b){ return a||b},
}
var a1 = operators[o1](v1,v2);
var a2 = operators[o2](v3,v4);
var isTrue = operators[mainOperator](a1, a2);
return isTrue ? options.fn(this) : options.inverse(this);
});
Usage:
/* if(list.length>0 && public){}*/
{{#checkIf list.length '>' 0 '&&' public '==' true}} <p>condition satisfied</p>{{/checkIf}}
The only way would be for you to consume the entire input stream yourself in the filter, take what you want from it, and then create a new InputStream for the content you read, and put that InputStream in to a ServletRequestWrapper (or HttpServletRequestWrapper).
The downside is you'll have to parse the payload yourself, the standard doesn't make that capability available to you.
Addenda --
As I said, you need to look at HttpServletRequestWrapper.
In a filter, you continue along by calling FilterChain.doFilter(request, response).
For trivial filters, the request and response are the same as the ones passed in to the filter. That doesn't have to be the case. You can replace those with your own requests and/or responses.
HttpServletRequestWrapper is specifically designed to facilitate this. You pass it the original request, and then you can intercept all of the calls. You create your own subclass of this, and replace the getInputStream method with one of your own. You can't change the input stream of the original request, so instead you have this wrapper and return your own input stream.
The simplest case is to consume the original requests input stream in to a byte buffer, do whatever magic you want on it, then create a new ByteArrayInputStream from that buffer. This is what is returned in your wrapper, which is passed to the FilterChain.doFilter method.
You'll need to subclass ServletInputStream and make another wrapper for your ByteArrayInputStream, but that's not a big deal either.
All of the answers here now contain the old behavior of maps. In Go 1.12+, you can just print a map value and it will be sorted by key automatically. This has been added because it allows the testing of map values easily.
func main() {
m := map[int]int{3: 5, 2: 4, 1: 3}
fmt.Println(m)
// In Go 1.12+
// Output: map[1:3 2:4 3:5]
// Before Go 1.12 (the order was undefined)
// map[3:5 2:4 1:3]
}
Maps are now printed in key-sorted order to ease testing. The ordering rules are:
- When applicable, nil compares low
- ints, floats, and strings order by <
- NaN compares less than non-NaN floats
- bool compares false before true
- Complex compares real, then imaginary
- Pointers compare by machine address
- Channel values compare by machine address
- Structs compare each field in turn
- Arrays compare each element in turn
- Interface values compare first by reflect.Type describing the concrete type and then by concrete value as described in the previous rules.
When printing maps, non-reflexive key values like NaN were previously displayed as
<nil>
. As of this release, the correct values are printed.
Read more here.
// set your date here
$mydate = "2009-01-01";
/* strtotime accepts two parameters.
The first parameter tells what it should compute.
The second parameter defines what source date it should use. */
$lastyear = strtotime("-1 year", strtotime($mydate));
// format and display the computed date
echo date("Y-m-d", $lastyear);
Simply add spaces for { 2 3 4 5 6 } like these:
cout<<"{";
for(){
cout<<" "<<n; //n is the element to print !
}
cout<<" }";
public static void RemoveDuplicates<T>(IList<T> list )
{
if (list == null)
{
return;
}
int i = 1;
while(i<list.Count)
{
int j = 0;
bool remove = false;
while (j < i && !remove)
{
if (list[i].Equals(list[j]))
{
remove = true;
}
j++;
}
if (remove)
{
list.RemoveAt(i);
}
else
{
i++;
}
}
}
Will my existing implementations continue to work? If not, is there an easy to implement alternative.
The answer is yes, but not without a little work.
$.browser is an official plugin which was included in older versions of jQuery, so like any plugin you can simple copy it and incorporate it into your project or you can simply add it to the end of any jQuery release.
I have extracted the code for you incase you wish to use it.
// Limit scope pollution from any deprecated API
(function() {
var matched, browser;
// Use of jQuery.browser is frowned upon.
// More details: http://api.jquery.com/jQuery.browser
// jQuery.uaMatch maintained for back-compat
jQuery.uaMatch = function( ua ) {
ua = ua.toLowerCase();
var match = /(chrome)[ \/]([\w.]+)/.exec( ua ) ||
/(webkit)[ \/]([\w.]+)/.exec( ua ) ||
/(opera)(?:.*version|)[ \/]([\w.]+)/.exec( ua ) ||
/(msie) ([\w.]+)/.exec( ua ) ||
ua.indexOf("compatible") < 0 && /(mozilla)(?:.*? rv:([\w.]+)|)/.exec( ua ) ||
[];
return {
browser: match[ 1 ] || "",
version: match[ 2 ] || "0"
};
};
matched = jQuery.uaMatch( navigator.userAgent );
browser = {};
if ( matched.browser ) {
browser[ matched.browser ] = true;
browser.version = matched.version;
}
// Chrome is Webkit, but Webkit is also Safari.
if ( browser.chrome ) {
browser.webkit = true;
} else if ( browser.webkit ) {
browser.safari = true;
}
jQuery.browser = browser;
jQuery.sub = function() {
function jQuerySub( selector, context ) {
return new jQuerySub.fn.init( selector, context );
}
jQuery.extend( true, jQuerySub, this );
jQuerySub.superclass = this;
jQuerySub.fn = jQuerySub.prototype = this();
jQuerySub.fn.constructor = jQuerySub;
jQuerySub.sub = this.sub;
jQuerySub.fn.init = function init( selector, context ) {
if ( context && context instanceof jQuery && !(context instanceof jQuerySub) ) {
context = jQuerySub( context );
}
return jQuery.fn.init.call( this, selector, context, rootjQuerySub );
};
jQuerySub.fn.init.prototype = jQuerySub.fn;
var rootjQuerySub = jQuerySub(document);
return jQuerySub;
};
})();
If you're asking why anyone would need a depreciated plugin, I have prepared the following answer.
First and foremost the answer is compatibility. Since jQuery is plugin based, some developers opted to use $.browser and with the latest releases of jQuery which doesn't include $.browser all those plugins where rendered useless.
jQuery did release a migration plugin, which was created for developers to detect whether their plugin's used any depreciated dependencies such as $.browser.
Although this helped developers patch their plugin's. jQuery dropped $.browser completely so the above fix is probably the only solution until your developers patch or incorporate the above.
About: jQuery.browser
URL url = Test.class.getResource(args[0]); // reading demo file path from
// same location where class
File input=null;
try {
input = new File(url.toURI());
} catch (URISyntaxException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
I had the same issue, and it appears Gidon's answer has one tiny flaw: it generates a relative URL, which cannot be sent by mail.
My solution looks like this:
string link = HttpContext.Request.Url.Scheme + "://" + HttpContext.Request.Url.Authority + Url.Action("ResetPassword", "Account", new { key = randomString });
This way, a full URL is generated, and it works even if the application is several levels deep on the hosting server, and uses a port other than 80.
EDIT: I found this useful as well.
as amber and sinan have noted above, the javascritp '.split' method will work just fine. Just pass it the string separator(-) and the string that you intend to split('123-abc-itchy-knee') and it will do the rest.
var coolVar = '123-abc-itchy-knee';
var coolVarParts = coolVar.split('-'); // this is an array containing the items
var1=coolVarParts[0]; //this will retrieve 123
To access each item from the array just use the respective index(indices start at zero).
Provided that the remote repository is origin, and that you're interested in master:
git fetch origin
git reset --hard origin/master
This tells it to fetch the commits from the remote repository, and position your working copy to the tip of its master branch.
All your local commits not common to the remote will be gone.
Reverting a merge commit has been exhaustively covered in other questions. When you do a fast-forward merge, the second one you describe, you can use git reset
to get back to the previous state:
git reset --hard <commit_before_merge>
You can find the <commit_before_merge>
with git reflog
, git log
, or, if you're feeling the moxy (and haven't done anything else): git reset --hard HEAD@{1}
You can use "{}" for the target, then jsx will not cry
<Link target={"_blank"} to="your-link">Your Link</Link>
To do this using numpy, ie, if you have an array, a
, instead of list_a
:
a = np.array([1, 2, 4, 6])
my_filter = np.array([True, False, True, False], dtype=bool)
a[my_filter]
> array([1, 4])
Dataframes have a sort_index
method which returns a copy by default. Pass inplace=True
to operate in place.
import pandas as pd
df = pd.DataFrame([1, 2, 3, 4, 5], index=[100, 29, 234, 1, 150], columns=['A'])
df.sort_index(inplace=True)
print(df.to_string())
Gives me:
A
1 4
29 2
100 1
150 5
234 3
To call a function inside a same controller in any laravel version follow as bellow
$role = $this->sendRequest('parameter');
// sendRequest is a public function
Yet another solution is to use csvsql tool from amazing csvkit suite.
Usage example:
csvsql --db mysql://$user:$password@localhost/$database --insert --tables $tablename $file
This tool can automatically infer the data types (default behavior), create table and insert the data into the created table. --overwrite
option can be used to drop table if it already exists. --insert
option — to populate the table from the file.
pip install csvkit
Prerequisites: python-dev
, libmysqlclient-dev
, MySQL-python
apt-get install python-dev libmysqlclient-dev
pip install MySQL-python
You have to be more precise, using parentheses, otherwise Java will not use the order of operands that you want it to use.
if ((a[0] & 1 == 0) && (a[1] & 1== 0) && (a[2] & 1== 0)){
Becomes
if (((a[0] & 1) == 0) && ((a[1] & 1) == 0) && ((a[2] & 1) == 0)){
_([1,2,3]).find(function(v){
return v if (v==2);
})
Echoing Data If It Exists
Sometimes you may wish to echo a variable, but you aren't sure if the variable has been set. We can express this in verbose PHP code like so:
{{ isset($name) ? $name : 'Default' }}
However, instead of writing a ternary statement, Blade provides you with the following convenient short-cut:
{{ $name or 'Default' }}
In this example, if the $name variable exists, its value will be displayed. However, if it does not exist, the word Default will be displayed.
If you want to read CSV file with some lines, so this the solution.
while IFS=, read -ra line
do
test $i -eq 1 && ((i=i+1)) && continue
for col_val in ${line[@]}
do
echo -n "$col_val|"
done
echo
done < "$csvFile"
-eq
is used to compare integers. Use =
instead.
instead of using explode, try preg_split: http://www.php.net/manual/en/function.preg-split.php
@Ahmed
Below is code that specifies fields from a named range for insertion into MS Access. The nice thing about this code is that you can name your fields in Excel whatever the hell you want (If you use * then the fields have to match exactly between Excel and Access) as you can see I have named an Excel column "Haha" even though the Access column is called "dte".
Sub test()
dbWb = Application.ActiveWorkbook.FullName
dsh = "[" & Application.ActiveSheet.Name & "$]" & "Data2" 'Data2 is a named range
sdbpath = "C:\Users\myname\Desktop\Database2.mdb"
sCommand = "INSERT INTO [main] ([dte], [test1], [values], [values2]) SELECT [haha],[test1],[values],[values2] FROM [Excel 8.0;HDR=YES;DATABASE=" & dbWb & "]." & dsh
Dim dbCon As New ADODB.Connection
Dim dbCommand As New ADODB.Command
dbCon.Open "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & sdbpath & "; Jet OLEDB:Database Password=;"
dbCommand.ActiveConnection = dbCon
dbCommand.CommandText = sCommand
dbCommand.Execute
dbCon.Close
End Sub
This is due to your mysql configuration. According to this error you are trying to connect with the user 'root' to the database host 'localhost' on a database namend 'sgce' without being granted access rights.
Presuming you did not configure your mysql instance. Log in as root user and to the folloing:
CREATE DATABASE sgce;
CREATE USER 'root'@'localhost' IDENTIFIED BY 'mikem';
GRANT ALL PRIVILEGES ON sgce. * TO 'root'@'localhost';
FLUSH PRIVILEGES;
Also add your database_port in the parameters.yml. By default mysql listens on 3306:
database_port: 3306
What you are looking for is this:
$(".subclass", this).css("visibility","visible");
Add the this
after the class $(".subclass", this)
In case you just need one (first) value to retrieve from xml:
public static String getTagValue(String xml, String tagName){
return xml.split("<"+tagName+">")[1].split("</"+tagName+">")[0];
}
In case you want to parse whole xml document use JSoup:
Document doc = Jsoup.parse(xml, "", Parser.xmlParser());
for (Element e : doc.select("Request")) {
System.out.println(e);
}
Classic example "Index in Books"
Consider a "Book" of 1000 pages, divided by 10 Chapters, each section with 100 pages.
Simple, huh?
Now, imagine you want to find a particular Chapter that contains a word "Alchemist". Without an index page, you have no other option than scanning through the entire book/Chapters. i.e: 1000 pages.
This analogy is known as "Full Table Scan" in database world.
But with an index page, you know where to go! And more, to lookup any particular Chapter that matters, you just need to look over the index page, again and again, every time. After finding the matching index you can efficiently jump to that chapter by skipping the rest.
But then, in addition to actual 1000 pages, you will need another ~10 pages to show the indices, so totally 1010 pages.
Thus, the index is a separate section that stores values of indexed column + pointer to the indexed row in a sorted order for efficient look-ups.
Things are simple in schools, isn't it? :P
The /g
modifier is used to perform a global match (find all matches rather than stopping after the first)
You can use \d
for digit, as it is shorter than [0-9]
.
JavaScript:
var s = "04.07.2012";
echo(s.replace(/\d/g, "X"));
Output:
XX.XX.XXXX
The simple method is to use :
sdiff A1 A2
Another method is to use comm
, as you can see in Comparing two unsorted lists in linux, listing the unique in the second file
Virtual keyword for destructor is necessary when you want different destructors should follow proper order while objects is being deleted through base class pointer. for example:
Base *myObj = new Derived();
// Some code which is using myObj object
myObj->fun();
//Now delete the object
delete myObj ;
If your base class destructor is virtual then objects will be destructed in a order(firstly derived object then base ). If your base class destructor is NOT virtual then only base class object will get deleted(because pointer is of base class "Base *myObj"). So there will be memory leak for derived object.
A good way to create Public/Global variables is to treat the Form like a class object and declare properties and use Public Property Get [variable] to access property/method. Also you might need to reference or pass a Reference to the instantiated Form module. You will get errors if you call methods to forms/reports that are closed.
Example: pass Me.Form.Module.Parent into sub/function not inside form.
Option Compare Database
Option Explicit
''***********************************''
' Name: Date: Created Date Author: Name
' Current Version: 1.0
' Called by:
''***********************************''
' Notes: Explain Who what when why...
' This code Example requires properties to be filled in
''***********************************''
' Global Variables
Public GlobalData As Variant
''***********************************''
' Private Variables
Private ObjectReference As Object
Private ExampleVariable As Variant
Private ExampleData As Variant
''***********************************''
' Public properties
Public Property Get ObjectVariable() As Object
Set ObjectVariable = ObjectReference
End Property
Public Property Get Variable1() As Variant
'Recommend using variants to avoid data errors
Variable1 = ExampleVariable
End property
''***********************************''
' Public Functions that return values
Public Function DataReturn (Input As Variant) As Variant
DataReturn = ExampleData + Input
End Function
''***********************************''
' Public Sub Routines
Public Sub GlobalMethod()
'call local Functions/Subs outside of form
Me.Form.Refresh
End Sub
''***********************************''
' Private Functions/Subs used not visible outside
''***********************************''
End Code
So in the other module you would be able to access:
Public Sub Method1(objForm as Object)
'read/write data value
objForm.GlobalData
'Get object reference (need to add Public Property Set to change reference object)
objForm.ObjectVariable
'read only (needs Public property Let to change value)
objForm.Variable1
'Gets result of function with input
objForm.DataReturn([Input])
'runs sub/function from outside of normal scope
objForm.GlobalMethod
End Sub
If you use Late Binding like I do always check for Null values and objects that are Nothing before attempting to do any processing.
couple of months back, I had the same requirement for one of my projects. I searched a bit for it and found out the following solution. This is not the only solution but I found it to one of the simpler one.
Use the webservice at http://www.webservicex.net/uszip.asmx.
Specifically GetInfoByZIP()
method.
You will be able to query by any zipcode (ex: 40220
) and you will have a response back as the following...
<?xml version="1.0" encoding="UTF-8"?>
<NewDataSet>
<Table>
<CITY>Louisville</CITY>
<STATE>KY</STATE>
<ZIP>40220</ZIP>
<AREA_CODE>502</AREA_CODE>
<TIME_ZONE>E</TIME_ZONE>
</Table>
</NewDataSet>
Hope this helps...
If you don't want to use a BackgroundWorker, and just use a regular Thread, then you can fire an event to return data like this:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Threading;
namespace ThreadWithDataReturnExample
{
public partial class Form1 : Form
{
private Thread thread1 = null;
public Form1()
{
InitializeComponent();
thread1 = new Thread(new ThreadStart(this.threadEntryPoint));
Thread1Completed += new AsyncCompletedEventHandler(thread1_Thread1Completed);
}
private void startButton_Click(object sender, EventArgs e)
{
thread1.Start();
//Alternatively, you could pass some object
//in such as Start(someObject);
//With apprioriate locking, or protocol where
//no other threads access the object until
//an event signals when the thread is complete,
//any other class with a reference to the object
//would be able to access that data.
//But instead, I'm going to use AsyncCompletedEventArgs
//in an event that signals completion
}
void thread1_Thread1Completed(object sender, AsyncCompletedEventArgs e)
{
if (this.InvokeRequired)
{//marshal the call if we are not on the GUI thread
BeginInvoke(new AsyncCompletedEventHandler(thread1_Thread1Completed),
new object[] { sender, e });
}
else
{
//display error if error occurred
//if no error occurred, process data
if (e.Error == null)
{//then success
MessageBox.Show("Worker thread completed successfully");
DataYouWantToReturn someData = e.UserState as DataYouWantToReturn;
MessageBox.Show("Your data my lord: " + someData.someProperty);
}
else//error
{
MessageBox.Show("The following error occurred:" + Environment.NewLine + e.Error.ToString());
}
}
}
#region I would actually move all of this into it's own class
private void threadEntryPoint()
{
//do a bunch of stuff
//when you are done:
//initialize object with data that you want to return
DataYouWantToReturn dataYouWantToReturn = new DataYouWantToReturn();
dataYouWantToReturn.someProperty = "more data";
//signal completion by firing an event
OnThread1Completed(new AsyncCompletedEventArgs(null, false, dataYouWantToReturn));
}
/// <summary>
/// Occurs when processing has finished or an error occurred.
/// </summary>
public event AsyncCompletedEventHandler Thread1Completed;
protected virtual void OnThread1Completed(AsyncCompletedEventArgs e)
{
//copy locally
AsyncCompletedEventHandler handler = Thread1Completed;
if (handler != null)
{
handler(this, e);
}
}
#endregion
}
}
Make sure external storage is present: http://developer.android.com/guide/topics/data/data-storage.html#filesExternal
private boolean isExternalStoragePresent() {
boolean mExternalStorageAvailable = false;
boolean mExternalStorageWriteable = false;
String state = Environment.getExternalStorageState();
if (Environment.MEDIA_MOUNTED.equals(state)) {
// We can read and write the media
mExternalStorageAvailable = mExternalStorageWriteable = true;
} else if (Environment.MEDIA_MOUNTED_READ_ONLY.equals(state)) {
// We can only read the media
mExternalStorageAvailable = true;
mExternalStorageWriteable = false;
} else {
// Something else is wrong. It may be one of many other states, but
// all we need
// to know is we can neither read nor write
mExternalStorageAvailable = mExternalStorageWriteable = false;
}
if (!((mExternalStorageAvailable) && (mExternalStorageWriteable))) {
Toast.makeText(context, "SD card not present", Toast.LENGTH_LONG)
.show();
}
return (mExternalStorageAvailable) && (mExternalStorageWriteable);
}
In layman's terms:
JDBC is a standard for connecting to a DB directly and running SQL against it - e.g SELECT * FROM USERS
, etc. Data sets can be returned which you can handle in your app, and you can do all the usual things like INSERT
, DELETE
, run stored procedures, etc. It is one of the underlying technologies behind most Java database access (including JPA providers).
One of the issues with traditional JDBC apps is that you can often have some crappy code where lots of mapping between data sets and objects occur, logic is mixed in with SQL, etc.
JPA is a standard for Object Relational Mapping. This is a technology which allows you to map between objects in code and database tables. This can "hide" the SQL from the developer so that all they deal with are Java classes, and the provider allows you to save them and load them magically. Mostly, XML mapping files or annotations on getters and setters can be used to tell the JPA provider which fields on your object map to which fields in the DB. The most famous JPA provider is Hibernate, so it's a good place to start for concrete examples.
Other examples include OpenJPA, toplink, etc.
Under the hood, Hibernate and most other providers for JPA write SQL and use JDBC to read and write from and to the DB.
const input = document.getElementById('input')_x000D_
_x000D_
input.addEventListener('change', (event) => {_x000D_
const target = event.target_x000D_
if (target.files && target.files[0]) {_x000D_
_x000D_
/*Maximum allowed size in bytes_x000D_
5MB Example_x000D_
Change first operand(multiplier) for your needs*/_x000D_
const maxAllowedSize = 5 * 1024 * 1024;_x000D_
if (target.files[0].size > maxAllowedSize) {_x000D_
// Here you can ask your users to load correct file_x000D_
target.value = ''_x000D_
}_x000D_
}_x000D_
})
_x000D_
<input type="file" id="input" />
_x000D_
I had the same issue and main reason why R.java was not re-generated is errors in any of the files in the project. Once we fix those the R.java should get generated.
I had the same issue but solved it by using Ubuntu.
python -m pip install pyaudio
brew install portaudio
brew link portaudio
You can put in this directory your Xampp control panel shortcut
it will work fine (it will automatically start after windows startup) as @wajahat-hashmi answered above:
C:\Users\User-Name\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup
About aditional windows script or programs that we need to run automatically...
I needed to create some additional scripts to initialize some windows services. If someone has the same need you can put in that same directory, they will all run right after windows startup.
For me, Xampp auto start and other scripts and shortcuts worked fine in windows 8.1, I think it will work fine in any windows version.
I hope it works well for anyone who has the same need.
Annotate the property like below
[Key]
[DatabaseGenerated(DatabaseGeneratedOption.Identity)]
public int ID { get; set; }
To use identity columns for all value-generated properties on a new model, simply place the following in your context's OnModelCreating():
builder.ForNpgsqlUseIdentityColumns();
This will create make all keys and other properties which have .ValueGeneratedOnAdd() have Identity by default. You can use ForNpgsqlUseIdentityAlwaysColumns() to have Identity always, and you can also specify identity on a property-by-property basis with UseNpgsqlIdentityColumn() and UseNpgsqlIdentityAlwaysColumn().
I realize that this is an old question but perhaps someone will find my code sample useful. This code encodes a file in Base64 then decodes it and saves it in a new location.
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Arrays;
import org.apache.commons.codec.binary.Base64;
public class Base64Example {
public static void main(String[] args) {
Base64Example tempObject = new Base64Example();
// convert file to regular byte array
byte[] codedFile = tempObject.convertFileToByteArray("your_input_file_path");
// encoded file in Base64
byte[] encodedFile = Base64.encodeBase64(codedFile);
// print out the byte array
System.out.println(Arrays.toString(encodedFile));
// print the encoded String
System.out.println(encodedFile);
// decode file back to regular byte array
byte[] decodedByteArray = Base64.decodeBase64(encodedFile);
// save decoded byte array to a file
boolean success = tempObject.saveFileFromByteArray("your_output_file_path", decodedByteArray);
// print out success
System.out.println("success : " + success);
}
public byte[] convertFileToByteArray(String filePath) {
Path path = Paths.get(filePath);
byte[] codedFile = null;
try {
codedFile = Files.readAllBytes(path);
} catch (IOException e) {
e.printStackTrace();
}
return codedFile;
}
public boolean saveFileFromByteArray(String filePath, byte[] decodedByteArray) {
boolean success = false;
Path path = Paths.get(filePath);
try {
Files.write(path, decodedByteArray);
success = true;
} catch (Exception e) {
e.printStackTrace();
}
return success;
}
}
One other work-around is to use jupyter notebooks and use the markdown mode in cells to render equations.
Basic stuff seems to work perfectly, like centered equations
\begin{equation}
...
\end{equation}
or inline equations
$ \sum_{\forall i}{x_i^{2}} $
Although, one of the functions that I really wanted did not render at all in github was \mbox{}
, which was a bummer. But, all in all this has been the most successful way of rendering equations on github.
The right way to do that is:
for(std::vector<T>::iterator it = v.begin(); it != v.end(); ++it) {
it->doSomething();
}
Where T is the type of the class inside the vector. For example if the class was CActivity, just write CActivity instead of T.
This type of method will work on every STL (Not only vectors, which is a bit better).
If you still want to use indexes, the way is:
for(std::vector<T>::size_type i = 0; i != v.size(); i++) {
v[i].doSomething();
}
The App_Data folder is a folder, which your asp.net worker process has files sytem rights too, but isn't published through the web server.
For example we use it to update a local CSV of a contact us form. If the preferred method of emails fails or any querying of the data source is required, the App_Data files are there.
It's not ideal, but it it's a good fall-back.
While the results vary in this case because the column names are numbers, another way I've used is data.frame(rbind(mytable))
. Using the example from @X.X:
> freq_t = table(cyl = mtcars$cyl, gear = mtcars$gear)
> freq_t
gear
cyl 3 4 5
4 1 8 2
6 2 4 1
8 12 0 2
> data.frame(rbind(freq_t))
X3 X4 X5
4 1 8 2
6 2 4 1
8 12 0 2
If the column names do not start with numbers, the X
won't get added to the front of them.
var angle = 0;
$('#button').on('click', function() {
angle += 90;
$('#image').css('transform','rotate(' + angle + 'deg)');
});
Try this code.
One more solution to this may be as follows.
public static String toCamelCase(String str, String... separators) {
String separatorsRegex = "\\".concat(org.apache.commons.lang3.StringUtils.join(separators, "|\\"));
List splits = Arrays.asList(str.toLowerCase().split(separatorsRegex));
String capitalizedString = (String)splits.stream().map(WordUtils::capitalize).reduce("", String::concat);
return capitalizedString.substring(0, 1).toLowerCase() + capitalizedString.substring(1);
}
Below is my simple approach to the issue.
JQuery function:
jQuery.fn.trackClicks = function () {
if ($(this).attr("data-clicks") === undefined) $(this).attr("data-clicks", 0);
var timer;
$(this).click(function () {
$(this).attr("data-clicks", parseInt($(this).attr("data-clicks")) + 1);
if (timer) clearTimeout(timer);
var item = $(this);
timer = setTimeout(function() {
item.attr("data-clicks", 0);
}, 1000);
});
}
Implementation:
$(function () {
$("a").trackClicks();
$("a").click(function () {
if ($(this).attr("data-clicks") === "2") {
// Double clicked
}
});
});
Inspect the clicked element in Firefox/Chrome to see data-clicks go up and down as you click, adjust time (1000) to suit.
An easy solution is use the property zoom
:
input[type="checkbox"] {_x000D_
zoom: 1.5;_x000D_
}
_x000D_
<input type="checkbox" />
_x000D_
I have a little helper class in all of my applications with methods like:
public static double arrayMax(double[] arr) {
double max = Double.NEGATIVE_INFINITY;
for(double cur: arr)
max = Math.max(max, cur);
return max;
}
If you're suffering due to ReSharper then below mentioned options may help.
Visual Studio configuration:
ReSharper may conflict with the other Visual Studio addins and extensions - in case of slowdowns, please try to disable the other addins one-by-one and check if it helps to speed up Visual Studio with ReSharper. Here are some examples of known compatibility issues with other addins:
Productivity Power Tools
VSCommands
Also, you may try turning off the following options under "Tools | Options | Environment | General": Automatically adjust visual experience based on client performance Use hardware graphics acceleration if available
ReSharper configuration.
Though ReSharper provides quite a few powerful and useful features, some of them can be tweaked or turned off in terms of improving the speed. Here are some examples:
Turn off Solution Wide Analysis (SWA) in "ReSharper | Options | Code Inspection | Settings", 'Analyze errors in whole solution' checkbox
Switch back to Visual Studio IntelliSense in "ReSharper | Options | Environment | IntelliSense | General" dialog Clearing caches for current solution in "ReSharper | Options | Environment | General" dialog
Here are the links:
It looks like the github.com
host which jenkins tries to connect to is not listed under the Jenkins user's $HOME/.ssh/known_hosts
. Jenkins runs on most distros as the user jenkins
and hence has its own .ssh
directory to store the list of public keys and known_hosts
.
The easiest solution I can think of to fix this problem is:
# Login as the jenkins user and specify shell explicity,
# since the default shell is /bin/false for most
# jenkins installations.
sudo su jenkins -s /bin/bash
cd SOME_TMP_DIR
# git clone YOUR_GITHUB_URL
# Allow adding the SSH host key to your known_hosts
# Exit from su
exit
Your composer.phar
command lacks the flag for executable, or it is not inside the path.
The first problem can be fixed with chmod +x composer.phar
, the second by calling it as ./composer.phar -v
.
You have to prefix executables that are not in the path with an explicit reference to the current path in Unix, in order to avoid going into a directory that has an executable file with an innocent name that looks like a regular command, but is not. Just think of a cat
in the current directory that does not list files, but deletes them.
The alternative, and better, fix for the second problem would be to put the composer.phar
file into a location that is mentioned in the path
too many ) parenthesis remove one of them.
Refer to this: http: deprecate @angular/http in favor of @angular/common/http.
//for closeing the popover when user click outside it will close all popover
var hidePopover = function(element) {
var elementScope = angular.element($(element).siblings('.popover')).scope().$parent;
elementScope.isOpen = false;
elementScope.$apply();
//Remove the popover element from the DOM
$(element).siblings('.popover').remove();
};
$(document).ready(function(){
$('body').on('click', function (e) {
$("a").each(function () {
//Only do this for all popovers other than the current one that cause this event
if (!($(this).is(e.target) || $(this).has(e.target).length > 0)
&& $(this).siblings('.popover').length !== 0 && $(this).siblings('.popover').has(e.target).length === 0)
{
hidePopover(this);
}
});
});
});
If the radiobutton-checked event occurs before the content of the window is loaded fully, i.e. the ellipse is loaded fully, such an exception will be thrown. So check if the UI of the window is loaded (probably by Window_ContentRendered event, etc.).
Let's say you are writing a test case for a negative flow where the code being tested should raise an exception.
try{
bizMethod(badData);
fail(); // FAIL when no exception is thrown
} catch (BizException e) {
assert(e.errorCode == THE_ERROR_CODE_U_R_LOOKING_FOR)
}
Follow below steps:
Must put the html files in resources/templates/
Replace the @RestController
with @Controller
Remove if you are using any view resolvers.
Your controller method should return file name of view without extension like return "index"
Include the below dependencies:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
</dependency>`
I tried to do this with Date
with native JSON
...
function stringify (obj: any) {
return JSON.stringify(
obj,
function (k, v) {
if (this[k] instanceof Date) {
return ['$date', +this[k]]
}
return v
}
)
}
function clone<T> (obj: T): T {
return JSON.parse(
stringify(obj),
(_, v) => (Array.isArray(v) && v[0] === '$date') ? new Date(v[1]) : v
)
}
What does this say? It says
$date
, if you want it more secure.class Klass {
static fromRepr (repr: string): Klass {
return new Klass(...)
}
static guid = '__Klass__'
__repr__ (): string {
return '...'
}
}
This is a serializable Klass, with
function serialize (obj: any) {
return JSON.stringify(
obj,
function (k, v) { return this[k] instanceof Klass ? [Klass.guid, this[k].__repr__()] : v }
)
}
function deserialize (repr: string) {
return JSON.parse(
repr,
(_, v) => (Array.isArray(v) && v[0] === Klass.guid) ? Klass.fromRepr(v[1]) : v
)
}
I tried to do it with Mongo-style Object ({ $date }
) as well, but it failed in JSON.parse
. Supplying k
doesn't matter anymore...
BTW, if you don't care about libraries, you can use yaml.dump
/ yaml.load
from js-yaml
. Just make sure you do it the dangerous way.
You could use a generator expression with a default value and then next
it:
next((x for x in seq if predicate(x)), None)
Although for this one-liner you need to be using Python >= 2.6.
This rather popular article further discusses this issue: Cleanest Python find-in-list function?.
To exit from Python terminal, simply just do:
exit()
Please pay attention it's a function which called as most user mix it with exit without calling, but new Pyhton terminal show a message...
or as a shortcut, press:
Ctrl + D
on your keyboard...
Just get the same problem by installing my app on iPhone 5S with Distribution Profile
-> my solution was to activate Capabilities wich are set in Distribution Profile(in my case "Keychain Sharing","In-App Purchase" and "Game Center")
Hope this helps someone...
To create a user with sudo privileges is to put the user into /etc/sudoers
, or make the user a member of a group specified in /etc/sudoers
. And to make it password-less is to additionally specify NOPASSWD
in /etc/sudoers
.
Example of /etc/sudoers
:
## Allow root to run any commands anywhere
root ALL=(ALL) ALL
## Allows people in group wheel to run all commands
%wheel ALL=(ALL) ALL
## Same thing without a password
%wheel ALL=(ALL) NOPASSWD: ALL
And instead of fiddling with /etc/sudoers
file, we can create a new file in /etc/sudoers.d/
directory since this directory is included by /etc/sudoers
by default, which avoids the possibility of breaking existing sudoers file, and also eliminates the dependency on the content inside of /etc/sudoers
.
To achieve above in Ansible, refer to the following:
- name: sudo without password for wheel group
copy:
content: '%wheel ALL=(ALL:ALL) NOPASSWD:ALL'
dest: /etc/sudoers.d/wheel_nopasswd
mode: 0440
You may replace %wheel
with other group names like %sudoers
or other user names like deployer
.
I tried to update a field with
$table->update(['field' => 'val']);
But it wasn't working, i had to modify my table Model to authorize this field to be edited : add 'field' in the array "protected $fillable"
Hope it will help someone :)
I will repeat what the others said, but will just try to make it simpler...
First, just create the Interface class
public interface PostTaskListener<K> {
// K is the type of the result object of the async task
void onPostTask(K result);
}
Second, create the AsyncTask (which can be an inner static class of your activity or fragment) that uses the Interface, by including a concrete class. In the example, the PostTaskListener is parameterized with String, which means it expects a String class as a result of the async task.
public static class LoadData extends AsyncTask<Void, Void, String> {
private PostTaskListener<String> postTaskListener;
protected LoadData(PostTaskListener<String> postTaskListener){
this.postTaskListener = postTaskListener;
}
@Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
if (result != null && postTaskListener != null)
postTaskListener.onPostTask(result);
}
}
Finally, the part where your combine your logic. In your activity / fragment, create the PostTaskListener and pass it to the async task. Here is an example:
...
PostTaskListener<String> postTaskListener = new PostTaskListener<String>() {
@Override
public void onPostTask(String result) {
//Your post execution task code
}
}
// Create the async task and pass it the post task listener.
new LoadData(postTaskListener);
Done!
You may use pip
for that without using the network. See in the docs (search for "Install a particular source archive file"). Any of those should work:
pip install relative_path_to_seaborn.tar.gz
pip install absolute_path_to_seaborn.tar.gz
pip install file:///absolute_path_to_seaborn.tar.gz
Or you may uncompress the archive and use setup.py
directly with either pip
or python
:
cd directory_containing_tar.gz
tar -xvzf seaborn-0.10.1.tar.gz
pip install seaborn-0.10.1
python setup.py install
Of course, you should also download required packages and install them the same way before you proceed.
I solved it upgrading the lxml version with:
pip install --upgrade lxml
Question: Is there a simple way to do this in the current release of Python?
Answer: There is no simple (direct) way to do this in the current release of Python.
Reference: Please refer to docs.python.org/2/library/datetime.html, section 8.1.2. timedelta Objects. As we may understand from that, we cannot increment month directly since it is not a uniform time unit.
Plus: If you want first day -> first day and last day -> last day mapping you should handle that separately for different months.
I had a similar task where I needed to delete multiple objects at once based on a property of the objects in the array.
So after a few iterations I end up with:
list = $.grep(list, function (o) { return !o.IsDeleted });
You can use this commands:
docker exec -it yournamecontainer psql -U postgres -c "CREATE DATABASE mydatabase ENCODING 'LATIN1' TEMPLATE template0 LC_COLLATE 'C' LC_CTYPE 'C';"
docker exec -it yournamecontainer psql -U postgres -c "GRANT ALL PRIVILEGES ON DATABASE postgres TO postgres;"
Just a guess what does the variable json
contain after
var json = Sys.Serialization.JavaScriptSerializer.serialize(obj);?
If it is a valid json object like {'foo':'foovalue', 'bar':'barvalue'}
then jQuery might not send it as json data but instead serialize it to foor=foovalue&bar=barvalue
thus you get the error "Invalid JSON primitive: foo"
Try instead setting the data as string
$.ajax({
...
data: "{'foo':'foovalue', 'bar':'barvalue'}", //note the additional quotation marks
...
})
This way jQuery should leave the data alone and send the string as is to the server which should allow ASP.NET to parse the json server side.
Above solutions not helped me, but I resolve same issue by next way
private setHeaders(params) {
const accessToken = this.localStorageService.get('token');
const reqData = {
headers: {
Authorization: `Bearer ${accessToken}`
},
};
if(params) {
let reqParams = {};
Object.keys(params).map(k =>{
reqParams[k] = params[k];
});
reqData['params'] = reqParams;
}
return reqData;
}
and send request
this.http.get(this.getUrl(url), this.setHeaders(params))
Its work with NestJS backend, with other I don't know.
It's simple, every time you open Jupyter Notebook and you are in your current work directory, open the Terminal in the near top right corner position where create new Python file in. The terminal in Jupyter will appear in the new tab.
Type command cd <your new work directory>
and enter, and then type Jupyter Notebook
in that terminal, a new Jupyter Notebook will appear in the new tab with your new work directory.
You can try this also for setting the class in a div section:
/** CSS **/
.content {
background: url('http://www.gransebryan.com/wp-content/uploads/2016/03/bryan-ganzon-granse-who.png') center no-repeat;
}
.displaybg {
text-align: center;
color: #FFF;
}
_x000D_
<div class="content">
<p class="displaybg">This is just a test</p>
</div>
_x000D_
In my opinion, the most understandable algorithm for detecting cycle in a directed graph is the graph-coloring-algorithm.
Basically, the graph coloring algorithm walks the graph in a DFS manner (Depth First Search, which means that it explores a path completely before exploring another path). When it finds a back edge, it marks the graph as containing a loop.
For an in depth explanation of the graph coloring algorithm, please read this article: http://www.geeksforgeeks.org/detect-cycle-direct-graph-using-colors/
Also, I provide an implementation of graph coloring in JavaScript https://github.com/dexcodeinc/graph_algorithm.js/blob/master/graph_algorithm.js
concept47's approach is the right way to do it, but I'd advise to merge with the --no-ff option in order to keep your commit history clear.
git checkout develop
git pull --rebase
git checkout NewFeatureBranch
git merge --no-ff master
I modified rushidesai1's answer to include a working example.
import java.io.*;
import java.util.*;
public class JsonMarshaller<T> {
private static ClassLoader loader = JsonMarshaller.class.getClassLoader();
public static void main(String[] args) {
try {
JsonMarshallerUnmarshaller<Station> marshaller = new JsonMarshallerUnmarshaller<>(Station.class);
String jsonString = read(loader.getResourceAsStream("data.json"));
List<Station> stations = marshaller.unmarshal(jsonString);
stations.forEach(System.out::println);
System.out.println(marshaller.marshal(stations));
} catch (IOException e) {
e.printStackTrace();
}
}
@SuppressWarnings("resource")
public static String read(InputStream ios) {
return new Scanner(ios).useDelimiter("\\A").next(); // Read the entire file
}
}
Station [id=123, title=my title, name=my name]
Station [id=456, title=my title 2, name=my name 2]
[{"id":123,"title":"my title","name":"my name"},{"id":456,"title":"my title 2","name":"my name 2"}]
import java.io.*;
import java.util.List;
import com.fasterxml.jackson.core.*;
import com.fasterxml.jackson.databind.*;
import com.fasterxml.jackson.databind.introspect.JacksonAnnotationIntrospector;
public class JsonMarshallerUnmarshaller<T> {
private ObjectMapper mapper;
private Class<T> targetClass;
public JsonMarshallerUnmarshaller(Class<T> targetClass) {
AnnotationIntrospector introspector = new JacksonAnnotationIntrospector();
mapper = new ObjectMapper();
mapper.getDeserializationConfig().with(introspector);
mapper.getSerializationConfig().with(introspector);
this.targetClass = targetClass;
}
public List<T> unmarshal(String jsonString) throws JsonParseException, JsonMappingException, IOException {
return parseList(jsonString, mapper, targetClass);
}
public String marshal(List<T> list) throws JsonProcessingException {
return mapper.writeValueAsString(list);
}
public static <E> List<E> parseList(String str, ObjectMapper mapper, Class<E> clazz)
throws JsonParseException, JsonMappingException, IOException {
return mapper.readValue(str, listType(mapper, clazz));
}
public static <E> List<E> parseList(InputStream is, ObjectMapper mapper, Class<E> clazz)
throws JsonParseException, JsonMappingException, IOException {
return mapper.readValue(is, listType(mapper, clazz));
}
public static <E> JavaType listType(ObjectMapper mapper, Class<E> clazz) {
return mapper.getTypeFactory().constructCollectionType(List.class, clazz);
}
}
public class Station {
private long id;
private String title;
private String name;
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@Override
public String toString() {
return String.format("Station [id=%s, title=%s, name=%s]", id, title, name);
}
}
[{
"id": 123,
"title": "my title",
"name": "my name"
}, {
"id": 456,
"title": "my title 2",
"name": "my name 2"
}]
In my case, one of my testing targets was working but the other one was not. It was giving the above error with a missing library or whatever. I compared the settings for both of the testing targets and found that one was missing the configuration for "Test Host", so I copied that from the working test target and it fixed my broken test target!
Not the best solution, but here is what I got:
1) Annotate getter you want to initialize with this annotation:
@Retention(RetentionPolicy.RUNTIME)
public @interface Lazy {
}
2) Use this method (can be put in a generic class, or you can change T with Object class) on a object after you read it from database:
public <T> void forceLoadLazyCollections(T entity) {
Session session = getSession().openSession();
Transaction tx = null;
try {
tx = session.beginTransaction();
session.refresh(entity);
if (entity == null) {
throw new RuntimeException("Entity is null!");
}
for (Method m : entityClass.getMethods()) {
Lazy annotation = m.getAnnotation(Lazy.class);
if (annotation != null) {
m.setAccessible(true);
logger.debug(" method.invoke(obj, arg1, arg2,...); {} field", m.getName());
try {
Hibernate.initialize(m.invoke(entity));
}
catch (Exception e) {
logger.warn("initialization exception", e);
}
}
}
}
finally {
session.close();
}
}