@include
directive allows you to include a Blade view from within another view, like this :
@include('another.view')
asset()
The asset
function generates a URL for an asset using the current scheme of the request (HTTP or HTTPS):
<link href="{{ asset('css/styles.css') }}" rel="stylesheet">
<script type="text/javascript" src="{{ asset('js/scripts.js') }}"></script>
mix()
If you are using versioned Mix file, you can also use mix()
function. It will returns the path to a versioned Mix file:
<link href="{{ mix('css/styles.css') }}" rel="stylesheet">
<script type="text/javascript" src="{{ mix('js/scripts.js') }}"></script>
@push()
.layout.blade.php
<html>
<head>
<!-- push target to head -->
@stack('styles')
@stack('scripts')
</head>
<body>
<!-- or push target to footer -->
@stack('scripts')
</body>
</html
view.blade.php
@push('styles')
<link href="{{ asset('css/styles.css') }}" rel="stylesheet">
@endpush
@push('scripts')
<script type="text/javascript" src="{{ asset('js/scripts.js') }}"></script>
@endpush
If you want an integer, try this code:
import datetime
print(datetime.datetime.now().strftime("%s%f")[:13])
Output:
1545474382803
One solution can be using pool
of clients like the following:
const { Pool } = require('pg');
var config = {
user: 'foo',
database: 'my_db',
password: 'secret',
host: 'localhost',
port: 5432,
max: 10, // max number of clients in the pool
idleTimeoutMillis: 30000
};
const pool = new Pool(config);
pool.on('error', function (err, client) {
console.error('idle client error', err.message, err.stack);
});
pool.query('SELECT $1::int AS number', ['2'], function(err, res) {
if(err) {
return console.error('error running query', err);
}
console.log('number:', res.rows[0].number);
});
You can see more details on this resource.
A modification to GUS's example:
$(document).ready(function() {
var tmpImg = new Image() ;
tmpImg.onload = function() {
// Run onload code.
} ;
tmpImg.src = $('#img').attr('src');
})
Set the source before and after the onload.
Update
I found another simple way
simply declare a property :-
@property( strong , nonatomic) UITextfield *currentTextfield;
and a Tap Gesture Gecognizer:-
@property (strong , nonatomic) UITapGestureRecognizer *resignTextField;
In ViewDidLoad
_currentTextfield=[[UITextField alloc]init];
_resignTextField=[[UITapGestureRecognizer alloc]initWithTarget:@selector(tapMethod:)];
[self.view addGestureRecognizer:_resignTextField];
Implement the textfield delegate method didBeginEditing
-(void)textFieldDidBeginEditing:(UITextField *)textField{
_currentTextfield=textField;
}
Implement Your Tap Gesture Method (_resignTextField)
-(void)tapMethod:(UITapGestureRecognizer *)Gesture{
[_currentTextfield resignFirstResponder];
}
If you are using Spring 3.1 and above, you can use something like...
@Configuration
@PropertySource("classpath:foo.properties")
public class PropertiesWithJavaConfig {
@Bean
public static PropertySourcesPlaceholderConfigurer propertySourcesPlaceholderConfigurer() {
return new PropertySourcesPlaceholderConfigurer();
}
}
You can also go by the xml configuration like...
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.2.xsd">
<context:property-placeholder location="classpath:foo.properties" />
</beans>
In earlier versions.
Based on is.js you can write a helper file for getting browser name like this-
const Browser = {};
const vendor = (navigator && navigator.vendor || '').toLowerCase();
const userAgent = (navigator && navigator.userAgent || '').toLowerCase();
Browser.getBrowserName = () => {
if(isOpera()) return 'opera'; // Opera
else if(isChrome()) return 'chrome'; // Chrome
else if(isFirefox()) return 'firefox'; // Firefox
else if(isSafari()) return 'safari'; // Safari
else if(isInternetExplorer()) return 'ie'; // Internet Explorer
}
// Start Detecting browser helpers functions
function isOpera() {
const isOpera = userAgent.match(/(?:^opera.+?version|opr)\/(\d+)/);
return isOpera !== null;
}
function isChrome() {
const isChrome = /google inc/.test(vendor) ? userAgent.match(/(?:chrome|crios)\/(\d+)/) : null;
return isChrome !== null;
}
function isFirefox() {
const isFirefox = userAgent.match(/(?:firefox|fxios)\/(\d+)/);
return isFirefox !== null;
}
function isSafari() {
const isSafari = userAgent.match(/version\/(\d+).+?safari/);
return isSafari !== null;
}
function isInternetExplorer() {
const isInternetExplorer = userAgent.match(/(?:msie |trident.+?; rv:)(\d+)/);
return isInternetExplorer !== null;
}
// End Detecting browser helpers functions
export default Browser;
And just import this file where you need.
import Browser from './Browser.js';
const userBrowserName = Browser.getBrowserName() // return your browser name
// opera | chrome | firefox | safari | ie
GitHub Desktop team member here
What is the PATH to git.exe?
The version of Git used in GitHub Desktop (or GitHub for Windows) is not intended to be used directly by users, as the path will changes between updates and it might lack some features you need.
I recommend installing Git for Windows which will be installed at a predictable location under C:\Program Files\Git\cmd\git.exe
.
The Immediate Window can also be used to execute commands. Just type a >
followed by the command.
For example >shell cmd
will start a command shell (this can be useful to check what environment variables were passed to Visual Studio, for example). >cls
will clear the screen.
Here is a list of commands that are so commonly used that they have their own aliases: https://msdn.microsoft.com/en-us/library/c3a0kd3x.aspx
private static final String mText = "SHOP MA" + "\n" +
+ "----------------------------" + "\n" +
+ "Pannampitiya" + newline +
+ "09-10-2012 harsha no: 001" + "\n" +
+ "No Item Qty Price Amount" + "\n" +
+ "1 Bread 1 50.00 50.00" + "\n" +
+ "____________________________" + "\n";
This should work.
Try this:
void drawInitialNim(int num1, int num2, int num3){
int board[3][50] = {0}; // This is a local variable. It is not possible to use it after returning from this function.
int i, j, k;
for(i=0; i<num1; i++)
board[0][i] = 'O';
for(i=0; i<num2; i++)
board[1][i] = 'O';
for(i=0; i<num3; i++)
board[2][i] = 'O';
for (j=0; j<3;j++) {
for (k=0; k<50; k++) {
if(board[j][k] != 0)
printf("%c", board[j][k]);
}
printf("\n");
}
}
Change this line
double *ptr = malloc(sizeof(double *) * TIME);
to
double *ptr = malloc(sizeof(double) * TIME);
This is what I got from the Spring 3.0.x Reference Manual :-
Tip
If you intend to express annotation-driven injection by name, do not primarily use @Autowired, even if is technically capable of referring to a bean name through @Qualifier values. Instead, use the JSR-250 @Resource annotation, which is semantically defined to identify a specific target component by its unique name, with the declared type being irrelevant for the matching process.
As a specific consequence of this semantic difference, beans that are themselves defined as a collection or map type cannot be injected through @Autowired, because type matching is not properly applicable to them. Use @Resource for such beans, referring to the specific collection or map bean by unique name.
@Autowired applies to fields, constructors, and multi-argument methods, allowing for narrowing through qualifier annotations at the parameter level. By contrast, @Resource is supported only for fields and bean property setter methods with a single argument. As a consequence, stick with qualifiers if your injection target is a constructor or a multi-argument method.
As far as I know there is no native WPF function to get dimensions of the current monitor. Instead you could PInvoke native multiple display monitors functions, wrap them in managed class and expose all properties you need to consume them from XAML.
The 'react-json-view' provides solution rendering json string.
import ReactJson from 'react-json-view';
<ReactJson src={my_important_json} theme="monokai" />
I did mine with EF 6.x like this:
using(var db = new ProFormDbContext())
{
var Action = 1;
var xNTID = "A239333";
var userPlan = db.Database.SqlQuery<UserPlan>(
"AD.usp_UserPlanInfo @Action, @NTID", //, @HPID",
new SqlParameter("Action", Action),
new SqlParameter("NTID", xNTID)).ToList();
}
Don't double up on sqlparameter some people get burned doing this to their variable
var Action = new SqlParameter("@Action", 1); // Don't do this, as it is set below already.
I would like to suggest to remove one array item using delete and filter:
var arr = [1,2,3,4,5,5,6,7,8,9];
delete arr[5];
arr = arr.filter(function(item){ return item != undefined; });
//result: [1,2,3,4,5,6,7,8,9]
console.log(arr)
_x000D_
So, we can remove only one specific array item instead of all items with the same value.
See the Parameter Expansion section in the Bash man
page. A[@]
returns the contents of the array, :1:2
takes a slice of length 2, starting at index 1.
A=( foo bar "a b c" 42 )
B=("${A[@]:1:2}")
C=("${A[@]:1}") # slice to the end of the array
echo "${B[@]}" # bar a b c
echo "${B[1]}" # a b c
echo "${C[@]}" # bar a b c 42
echo "${C[@]: -2:2}" # a b c 42 # The space before the - is necesssary
Note that the fact that "a b c" is one array element (and that it contains an extra space) is preserved.
Use ConstraintLayout. Here is an example that will center the view according to the width and height of the parent screen:
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="#FF00FF"
android:orientation="vertical"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHeight_percent=".6"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintWidth_percent=".4"></LinearLayout>
</android.support.constraint.ConstraintLayout>
You might need to change your gradle to get the latest version of ConstraintLayout:
dependencies {
...
implementation 'com.android.support.constraint:constraint-layout:1.1.3'
}
The numpy and scipy libraries include the composite trapezoidal (numpy.trapz) and Simpson's (scipy.integrate.simps) rules.
Here's a simple example. In both trapz
and simps
, the argument dx=5
indicates that the spacing of the data along the x axis is 5 units.
from __future__ import print_function
import numpy as np
from scipy.integrate import simps
from numpy import trapz
# The y values. A numpy array is used here,
# but a python list could also be used.
y = np.array([5, 20, 4, 18, 19, 18, 7, 4])
# Compute the area using the composite trapezoidal rule.
area = trapz(y, dx=5)
print("area =", area)
# Compute the area using the composite Simpson's rule.
area = simps(y, dx=5)
print("area =", area)
Output:
area = 452.5
area = 460.0
You should look for the error in the file error_log in the log directory. Maybe there are differences between your local and server configuration (db user/password etc.etc.)
usually the log file is in
/var/log/apache2/error.log
or
/var/log/httpd/error.log
document.getElementById(button_id).innerHTML = 'Lock';
If your YAML file looks like this:
# tree format
treeroot:
branch1:
name: Node 1
branch1-1:
name: Node 1-1
branch2:
name: Node 2
branch2-1:
name: Node 2-1
And you've installed PyYAML
like this:
pip install PyYAML
And the Python code looks like this:
import yaml
with open('tree.yaml') as f:
# use safe_load instead load
dataMap = yaml.safe_load(f)
The variable dataMap
now contains a dictionary with the tree data. If you print dataMap
using PrettyPrint, you will get something like:
{
'treeroot': {
'branch1': {
'branch1-1': {
'name': 'Node 1-1'
},
'name': 'Node 1'
},
'branch2': {
'branch2-1': {
'name': 'Node 2-1'
},
'name': 'Node 2'
}
}
}
So, now we have seen how to get data into our Python program. Saving data is just as easy:
with open('newtree.yaml', "w") as f:
yaml.dump(dataMap, f)
You have a dictionary, and now you have to convert it to a Python object:
class Struct:
def __init__(self, **entries):
self.__dict__.update(entries)
Then you can use:
>>> args = your YAML dictionary
>>> s = Struct(**args)
>>> s
<__main__.Struct instance at 0x01D6A738>
>>> s...
and follow "Convert Python dict to object".
For more information you can look at pyyaml.org and this.
In Java 8 it is:
LocalDateTime.now()
and in case you need time zone info:
ZonedDateTime.now()
and in case you want to print fancy formatted string:
System.out.println(ZonedDateTime.now().format(DateTimeFormatter.RFC_1123_DATE_TIME))
_x000D_
_x000D_
.custom-modal-header_x000D_
{_x000D_
display: block;_x000D_
}_x000D_
.custom-modal .modal-content_x000D_
{_x000D_
width:500px;_x000D_
border: none;_x000D_
}_x000D_
.custom-modal_x000D_
{_x000D_
display: block !important;_x000D_
}_x000D_
.custom-fade .modal-dialog {_x000D_
transform: translateY(4%);_x000D_
opacity: 0;_x000D_
-webkit-transition: all .2s ease-out;_x000D_
-o-transition: all .2s ease-out;_x000D_
transition: all .2s ease-out;_x000D_
will-change: transform;_x000D_
}_x000D_
.custom-fade.in .modal-dialog {_x000D_
opacity: 1;_x000D_
transform: translateY(0%);_x000D_
}
_x000D_
<div class="modal custom-modal custom-fade" tabindex="-1" role="dialog"_x000D_
aria-hidden="true">_x000D_
<div class="modal-dialog modal-lg">_x000D_
<div class="modal-content">_x000D_
<div class="modal-header">_x000D_
<h5 class="modal-title">Title</h5>_x000D_
</div>_x000D_
<div class="modal-body">_x000D_
<p>My cat is dope.</p>_x000D_
</div>_x000D_
<div class="modal-footer">_x000D_
<button type="button" class="btn btn-primary" data-dismiss="modal">Sure (Meow)</button>_x000D_
</div>_x000D_
</div>_x000D_
</div>_x000D_
</div>
_x000D_
_x000D_
_x000D_
public static void Fill<T>(this IList<T> col, T value, int fromIndex, int toIndex)
{
if (fromIndex > toIndex)
throw new ArgumentOutOfRangeException("fromIndex");
for (var i = fromIndex; i <= toIndex; i++)
col[i] = value;
}
Something that works for all IList<T>
s.
Setup:
My OS windows 8 64bit
Eclipse version Standard/SDK Kepler Service Release 2
My JDK is jdk-8u5-windows-i586
My JRE is jre-8u5-windows-i586
This how I overcome my error.
At the very first my Class.forName("sun.jdbc.odbc.JdbcOdbcDriver")
also didn't work.
Then I login to this website and downloaded the UCanAccess 2.0.8 zip (as Mr.Gord Thompson said) file and unzip it.
Then you will also able to find these *.jar files in that unzip folder:
ucanaccess-2.0.8.jar
commons-lang-2.6.jar
commons-logging-1.1.1.jar
hsqldb.jar
jackcess-2.0.4.jar
Then what I did was I copied all these 5 files and paste them in these 2 locations:
C:\Program Files (x86)\eclipse\lib
C:\Program Files (x86)\eclipse\lib\ext
(I did that funny thing becoz I was unable to import these libraries to my project)
Then I reopen the eclipse with my project.then I see all that *.jar files in my project's JRE System Library folder.
Finally my code works.
public static void main(String[] args)
{
try
{
Connection conn=DriverManager.getConnection("jdbc:ucanaccess://C:\\Users\\Hasith\\Documents\\JavaDatabase1.mdb");
Statement stment = conn.createStatement();
String qry = "SELECT * FROM Table1";
ResultSet rs = stment.executeQuery(qry);
while(rs.next())
{
String id = rs.getString("ID") ;
String fname = rs.getString("Nama");
System.out.println(id + fname);
}
}
catch(Exception err)
{
System.out.println(err);
}
//System.out.println("Hasith Sithila");
}
A third variant:
ObjectMapper mapper = new ObjectMapper();
JsonNode actualObj = mapper.readValue("{\"k1\":\"v1\"}", JsonNode.class);
You need to add the python executable path to your Window's PATH variable.
c:\Python27\
). Each different directory is separated with a
semicolon. (Note: do not put spaces between elements in the PATH
. Your addition to the PATH
should read ;c:\Python27
NOT ; C\Python27
)cmd.exe
should be sufficient.I had this same issue, there was no issue regarding memory in my server machine, Finally i was able to fix it by following steps
3.Find "Microsoft Excel Application" in right side.
4.Open its properties by right click
5.Under Identity tab select the option interactive user and click Ok button.
Check once again. Hope it helps
NOTE: But now you may end up with another COM error "Retrieving the COM class factory for component...". In that case Just set the Identity to this User and enter the username and password of a user who has sufficient rights. In my case I entered a user of power user group.
Random Key Generator
keyLength argument is the character length you want for the key
function keyGen(keyLength) {
var i, key = "", characters = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
var charactersLength = characters.length;
for (i = 0; i < keyLength; i++) {
key += characters.substr(Math.floor((Math.random() * charactersLength) + 1), 1);
}
return key;
}
keyGen(12)
"QEt9mYBiTpYD"
=
in palindrom[i] = palindrom.charAt(palindrom.length)-1
should be ==
or ===
palindrom.charAt(palindrom.length)-1
should be palindrom.charAt(palindrom.length - i)
In C# and Java, the arithmatic expression on the right hand side of the assignment evaluates to int by default. That's why you need to cast back to a short, because there is no implicit conversion form int to short, for obvious reasons.
@John Woo's accepted answer has some caveats which you should be aware of:
So, there is an intermediate level between your SQL Server instance and the session which you can use to control the default language setting for session - login level.
SQL Server Instance level setting
-> User login level setting
-> Query Session level setting
This can help you in case you want to set default language of all new sessions belonging to some specific user only.
Simply change the default language setting of the target user login as per this link and you are all set. You can also do it from SQL Server Management Studio (SSMS) UI. Below you can see the default language setting in properties window of sa
user in SQL Server:
Note: Also, it is important to know that changing the setting doesn't affect the default language of already active sessions from that user login. It will affect only the new sessions created after changing the setting.
You could use Reflection to get the value of the property.
list = list.OrderBy( x => TypeHelper.GetPropertyValue( x, sortBy ) )
.ToList();
Where TypeHelper has a static method like:
public static class TypeHelper
{
public static object GetPropertyValue( object obj, string name )
{
return obj == null ? null : obj.GetType()
.GetProperty( name )
.GetValue( obj, null );
}
}
You might also want to look at Dynamic LINQ from the VS2008 Samples library. You could use the IEnumerable extension to cast the List as an IQueryable and then use the Dynamic link OrderBy extension.
list = list.AsQueryable().OrderBy( sortBy + " " + sortDirection );
Starting with elif option == 2:
, you indented one time too many. In a decent text editor, you should be able to highlight these lines and press Shift+Tab to fix the issue.
Additionally, there is no statement after for x in range(x, 1, 1):
. Insert an indented pass
to do nothing in the for
loop.
Also, in the first line, you wrote option == 1
. ==
tests for equality, but you meant =
( a single equals sign), which assigns the right value to the left name, i.e.
option = 1
If you want to center align an element without knowing it's width and height do:
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
Example:
*{_x000D_
margin:0;_x000D_
padding:0;_x000D_
}_x000D_
section{_x000D_
background:red;_x000D_
height: 100vh;_x000D_
width: 100vw;_x000D_
}_x000D_
div{ _x000D_
width: 80vw;_x000D_
height: 80vh;_x000D_
background: white;_x000D_
position: absolute;_x000D_
top: 50%;_x000D_
left: 50%;_x000D_
transform: translate(-50%, -50%);_x000D_
}
_x000D_
<section>_x000D_
<div>_x000D_
<h1>Popup</h1>_x000D_
</div>_x000D_
</section>
_x000D_
I'd suggest try the change event? test to see if it has a value if it does then you can continue with your code. jQuery has
.bind("change", function(){ ... });
Or
.change(function(){ ... });
which are equivalents.
for a unique selector change your name attribute to id and then jQuery("#imafile")
or a general jQuery('input[type="file"]')
for all the file inputs
Nothing to mess up buddy!!
If we have a positive valued functions f(n) and g(n) takes a positive valued argument n then ?(g(n)) defined as {f(n):there exist constants c1,c2 and n1 for all n>=n1}
where c1 g(n)<=f(n)<=c2 g(n)
c1=5 and c2=8 and n1=1
Among all the notations ,? notation gives the best intuition about the rate of growth of function because it gives us a tight bound unlike big-oh and big -omega which gives the upper and lower bounds respectively.
? tells us that g(n) is as close as f(n),rate of growth of g(n) is as close to the rate of growth of f(n) as possible.
I think the problem is the way you call your javascript function. Your code is like so:
<input type="button" onclick="javascript: myFunc(myID)" value="button"/>
myID should be wrapped in quotes.
This question has been asked many times on this site and the definitive answer is: NO, you can't connect an Android phone to an iPhone over Bluetooth, and YES Apple has restrictions that prevent this.
Some possible alternatives:
Coolest alternative: use the Bump API. It has iOS and Android support and really easy to integrate. For small payloads this can be the most convenient solution.
Details on why you can't connect an arbitrary device to the iPhone. iOS allows only some bluetooth profiles to be used without the Made For iPhone (MFi) certification (HPF, A2DP, MAP...). The Serial Port Profile that you would require to implement the communication is bound to MFi membership. Membership to this program provides you to the MFi authentication module that has to be added to your hardware and takes care of authenticating the device towards the iPhone. Android phones don't have this module, so even though the physical connection may be possible to build up, the authentication step will fail. iPhone to iPhone communication is possible as both ends are able to authenticate themselves.
Sprint == Iteration.
The lengths can vary, but it's a bad planning precedent to let them vary too much.
Keep them consistent in duration and you will get better at planning and delivering. Everything will be measured by how many 10-day sprints it takes to finish a series of use cases.
Keep them consistent in length and you can plan your deliveries, end-user testing, etc., with more accuracy.
The point is to release on time at a consistent pace. A regular schedule makes management slightly simpler and more predictable.
You can also use the useHistory
hook in a stateless component. Example from the docs.
import { useHistory } from "react-router"
function HomeButton() {
const history = useHistory()
return (
<button type="button" onClick={() => history.push("/home")}>
Go home
</button>
)
}
Note: Hooks were added in
[email protected]
and requirereact@>=16.8
Another info: If you want use a Route Constraint, imagine that you want force that parameter has int datatype, then you need use this syntax:
[Route("v1/location/**{deviceOrAppid:int?}**", Name = "AddNewLocation")]
The ? character is put always before the last } character
For more information see: Optional URI Parameters and Default Values
select count(*)
from user_tab_columns
where table_name='MYTABLE' --use upper case
Instead of uppercase you can use lower function. Ex: select count(*) from user_tab_columns where lower(table_name)='table_name';
mysqldb
is a module for Python that doesn't come pre-installed or with Django. You can download mysqldb
here.
If you are just wandering over the collection to read all of the values, then there is no difference between using an iterator or the new for loop syntax, as the new syntax just uses the iterator underwater.
If however, you mean by loop the old "c-style" loop:
for(int i=0; i<list.size(); i++) {
Object o = list.get(i);
}
Then the new for loop, or iterator, can be a lot more efficient, depending on the underlying data structure. The reason for this is that for some data structures, get(i)
is an O(n) operation, which makes the loop an O(n2) operation. A traditional linked list is an example of such a data structure. All iterators have as a fundamental requirement that next()
should be an O(1) operation, making the loop O(n).
To verify that the iterator is used underwater by the new for loop syntax, compare the generated bytecodes from the following two Java snippets. First the for loop:
List<Integer> a = new ArrayList<Integer>();
for (Integer integer : a)
{
integer.toString();
}
// Byte code
ALOAD 1
INVOKEINTERFACE java/util/List.iterator()Ljava/util/Iterator;
ASTORE 3
GOTO L2
L3
ALOAD 3
INVOKEINTERFACE java/util/Iterator.next()Ljava/lang/Object;
CHECKCAST java/lang/Integer
ASTORE 2
ALOAD 2
INVOKEVIRTUAL java/lang/Integer.toString()Ljava/lang/String;
POP
L2
ALOAD 3
INVOKEINTERFACE java/util/Iterator.hasNext()Z
IFNE L3
And second, the iterator:
List<Integer> a = new ArrayList<Integer>();
for (Iterator iterator = a.iterator(); iterator.hasNext();)
{
Integer integer = (Integer) iterator.next();
integer.toString();
}
// Bytecode:
ALOAD 1
INVOKEINTERFACE java/util/List.iterator()Ljava/util/Iterator;
ASTORE 2
GOTO L7
L8
ALOAD 2
INVOKEINTERFACE java/util/Iterator.next()Ljava/lang/Object;
CHECKCAST java/lang/Integer
ASTORE 3
ALOAD 3
INVOKEVIRTUAL java/lang/Integer.toString()Ljava/lang/String;
POP
L7
ALOAD 2
INVOKEINTERFACE java/util/Iterator.hasNext()Z
IFNE L8
As you can see, the generated byte code is effectively identical, so there is no performance penalty to using either form. Therefore, you should choose the form of loop that is most aesthetically appealing to you, for most people that will be the for-each loop, as that has less boilerplate code.
I faced the same issue. I had missed the forms module import tag in the app.module.ts
import { FormsModule } from '@angular/forms';
@NgModule({
imports: [BrowserModule,
FormsModule
],
$('#formid).reset();
or
document.getElementById('formid').reset();
JScript is the Microsoft implementation of Javascript
Example:
import math
x = 5.55
print((math.floor(x*100)%100))
This is will give you two numbers after the decimal point, 55 from that example. If you need one number you reduce by 10 the above calculations or increase depending on how many numbers you want after the decimal.
If you just want to know the mean, you can use
summary(results)
It will give you more information than expected.
ex) Mininum value, 1st Qu., Median, Mean, 3rd Qu. Maxinum value, number of NAs.
Furthermore, If you want to get mean values of each column, you can simply use the method below.
mean(results$columnName, na.rm = TRUE)
That will return mean value. (you have to change 'columnName' to your variable name
Joshua P Nixon's answer is correct but I had to set last modified date also. so here is the code.
var file = new File([blob], "file_name", {lastModified: 1534584790000});
1534584790000 is an unix timestamp for "GMT: Saturday, August 18, 2018 9:33:10 AM"
The solution to this answer using swift would be as follows.
let vc = MyViewController()
vc.view.backgroundColor = UIColor.clear // or whatever color.
vc.modalPresentationStyle = .overCurrentContext
present(vc, animated: true, completion: nil)
Following is a summarization and curation from many different sources on this topic including code example and quotes from selected blog posts. The complete list of best practices can be found here
TL;DR: Handling async errors in callback style is probably the fastest way to hell (a.k.a the pyramid of doom). The best gift you can give to your code is using instead a reputable promise library which provides much compact and familiar code syntax like try-catch
Otherwise: Node.JS callback style, function(err, response), is a promising way to un-maintainable code due to the mix of error handling with casual code, excessive nesting and awkward coding patterns
Code example - good
doWork()
.then(doWork)
.then(doError)
.then(doWork)
.catch(errorHandler)
.then(verify);
code example anti pattern – callback style error handling
getData(someParameter, function(err, result){
if(err != null)
//do something like calling the given callback function and pass the error
getMoreData(a, function(err, result){
if(err != null)
//do something like calling the given callback function and pass the error
getMoreData(b, function(c){
getMoreData(d, function(e){
...
});
});
});
});
});
Blog quote: "We have a problem with promises" (From the blog pouchdb, ranked 11 for the keywords "Node Promises")
"…And in fact, callbacks do something even more sinister: they deprive us of the stack, which is something we usually take for granted in programming languages. Writing code without a stack is a lot like driving a car without a brake pedal: you don’t realize how badly you need it, until you reach for it and it’s not there. The whole point of promises is to give us back the language fundamentals we lost when we went async: return, throw, and the stack. But you have to know how to use promises correctly in order to take advantage of them."
TL;DR: It pretty common to see code that throws errors as string or as a custom type – this complicates the error handling logic and the interoperability between modules. Whether you reject a promise, throw exception or emit error – using Node.JS built-in Error object increases uniformity and prevents loss of error information
Otherwise: When executing some module, being uncertain which type of errors come in return – makes it much harder to reason about the coming exception and handle it. Even worth, using custom types to describe errors might lead to loss of critical error information like the stack trace!
Code example - doing it right
//throwing an Error from typical function, whether sync or async
if(!productToAdd)
throw new Error("How can I add new product when no value provided?");
//'throwing' an Error from EventEmitter
const myEmitter = new MyEmitter();
myEmitter.emit('error', new Error('whoops!'));
//'throwing' an Error from a Promise
return new promise(function (resolve, reject) {
DAL.getProduct(productToAdd.id).then((existingProduct) =>{
if(existingProduct != null)
return reject(new Error("Why fooling us and trying to add an existing product?"));
code example anti pattern
//throwing a String lacks any stack trace information and other important properties
if(!productToAdd)
throw ("How can I add new product when no value provided?");
Blog quote: "A string is not an error" (From the blog devthought, ranked 6 for the keywords “Node.JS error object”)
"…passing a string instead of an error results in reduced interoperability between modules. It breaks contracts with APIs that might be performing instanceof Error checks, or that want to know more about the error. Error objects, as we’ll see, have very interesting properties in modern JavaScript engines besides holding the message passed to the constructor.."
TL;DR: Operations errors (e.g. API received an invalid input) refer to known cases where the error impact is fully understood and can be handled thoughtfully. On the other hand, programmer error (e.g. trying to read undefined variable) refers to unknown code failures that dictate to gracefully restart the application
Otherwise: You may always restart the application when an error appear, but why letting ~5000 online users down because of a minor and predicted error (operational error)? the opposite is also not ideal – keeping the application up when unknown issue (programmer error) occurred might lead unpredicted behavior. Differentiating the two allows acting tactfully and applying a balanced approach based on the given context
Code example - doing it right
//throwing an Error from typical function, whether sync or async
if(!productToAdd)
throw new Error("How can I add new product when no value provided?");
//'throwing' an Error from EventEmitter
const myEmitter = new MyEmitter();
myEmitter.emit('error', new Error('whoops!'));
//'throwing' an Error from a Promise
return new promise(function (resolve, reject) {
DAL.getProduct(productToAdd.id).then((existingProduct) =>{
if(existingProduct != null)
return reject(new Error("Why fooling us and trying to add an existing product?"));
code example - marking an error as operational (trusted)
//marking an error object as operational
var myError = new Error("How can I add new product when no value provided?");
myError.isOperational = true;
//or if you're using some centralized error factory (see other examples at the bullet "Use only the built-in Error object")
function appError(commonType, description, isOperational) {
Error.call(this);
Error.captureStackTrace(this);
this.commonType = commonType;
this.description = description;
this.isOperational = isOperational;
};
throw new appError(errorManagement.commonErrors.InvalidInput, "Describe here what happened", true);
//error handling code within middleware
process.on('uncaughtException', function(error) {
if(!error.isOperational)
process.exit(1);
});
Blog Quote: "Otherwise you risk the state" (From the blog debugable, ranked 3 for the keywords "Node.JS uncaught exception")
"…By the very nature of how throw works in JavaScript, there is almost never any way to safely “pick up where you left off”, without leaking references, or creating some other sort of undefined brittle state. The safest way to respond to a thrown error is to shut down the process. Of course, in a normal web server, you might have many connections open, and it is not reasonable to abruptly shut those down because an error was triggered by someone else. The better approach is to send an error response to the request that triggered the error, while letting the others finish in their normal time, and stop listening for new requests in that worker"
TL;DR: Error handling logic such as mail to admin and logging should be encapsulated in a dedicated and centralized object that all end-points (e.g. Express middleware, cron jobs, unit-testing) call when an error comes in.
Otherwise: Not handling errors within a single place will lead to code duplication and probably to errors that are handled improperly
Code example - a typical error flow
//DAL layer, we don't handle errors here
DB.addDocument(newCustomer, (error, result) => {
if (error)
throw new Error("Great error explanation comes here", other useful parameters)
});
//API route code, we catch both sync and async errors and forward to the middleware
try {
customerService.addNew(req.body).then(function (result) {
res.status(200).json(result);
}).catch((error) => {
next(error)
});
}
catch (error) {
next(error);
}
//Error handling middleware, we delegate the handling to the centrzlied error handler
app.use(function (err, req, res, next) {
errorHandler.handleError(err).then((isOperationalError) => {
if (!isOperationalError)
next(err);
});
});
Blog quote: "Sometimes lower levels can’t do anything useful except propagate the error to their caller" (From the blog Joyent, ranked 1 for the keywords “Node.JS error handling”)
"…You may end up handling the same error at several levels of the stack. This happens when lower levels can’t do anything useful except propagate the error to their caller, which propagates the error to its caller, and so on. Often, only the top-level caller knows what the appropriate response is, whether that’s to retry the operation, report an error to the user, or something else. But that doesn’t mean you should try to report all errors to a single top-level callback, because that callback itself can’t know in what context the error occurred"
TL;DR: Let your API callers know which errors might come in return so they can handle these thoughtfully without crashing. This is usually done with REST API documentation frameworks like Swagger
Otherwise: An API client might decide to crash and restart only because he received back an error he couldn’t understand. Note: the caller of your API might be you (very typical in a microservices environment)
Blog quote: "You have to tell your callers what errors can happen" (From the blog Joyent, ranked 1 for the keywords “Node.JS logging”)
…We’ve talked about how to handle errors, but when you’re writing a new function, how do you deliver errors to the code that called your function? …If you don’t know what errors can happen or don’t know what they mean, then your program cannot be correct except by accident. So if you’re writing a new function, you have to tell your callers what errors can happen and what they mea
TL;DR: When an unknown error occurs (a developer error, see best practice number #3)- there is uncertainty about the application healthiness. A common practice suggests restarting the process carefully using a ‘restarter’ tool like Forever and PM2
Otherwise: When an unfamiliar exception is caught, some object might be in a faulty state (e.g an event emitter which is used globally and not firing events anymore due to some internal failure) and all future requests might fail or behave crazily
Code example - deciding whether to crash
//deciding whether to crash when an uncaught exception arrives
//Assuming developers mark known operational errors with error.isOperational=true, read best practice #3
process.on('uncaughtException', function(error) {
errorManagement.handler.handleError(error);
if(!errorManagement.handler.isTrustedError(error))
process.exit(1)
});
//centralized error handler encapsulates error-handling related logic
function errorHandler(){
this.handleError = function (error) {
return logger.logError(err).then(sendMailToAdminIfCritical).then(saveInOpsQueueIfCritical).then(determineIfOperationalError);
}
this.isTrustedError = function(error)
{
return error.isOperational;
}
Blog quote: "There are three schools of thoughts on error handling" (From the blog jsrecipes)
…There are primarily three schools of thoughts on error handling: 1. Let the application crash and restart it. 2. Handle all possible errors and never crash. 3. Balanced approach between the two
TL;DR: A set of mature logging tools like Winston, Bunyan or Log4J, will speed-up error discovery and understanding. So forget about console.log.
Otherwise: Skimming through console.logs or manually through messy text file without querying tools or a decent log viewer might keep you busy at work until late
Code example - Winston logger in action
//your centralized logger object
var logger = new winston.Logger({
level: 'info',
transports: [
new (winston.transports.Console)(),
new (winston.transports.File)({ filename: 'somefile.log' })
]
});
//custom code somewhere using the logger
logger.log('info', 'Test Log Message with some parameter %s', 'some parameter', { anything: 'This is metadata' });
Blog quote: "Lets identify a few requirements (for a logger):" (From the blog strongblog)
…Lets identify a few requirements (for a logger): 1. Time stamp each log line. This one is pretty self explanatory – you should be able to tell when each log entry occured. 2. Logging format should be easily digestible by humans as well as machines. 3. Allows for multiple configurable destination streams. For example, you might be writing trace logs to one file but when an error is encountered, write to the same file, then into error file and send an email at the same time…
TL;DR: Monitoring and performance products (a.k.a APM) proactively gauge your codebase or API so they can auto-magically highlight errors, crashes and slow parts that you were missing
Otherwise: You might spend great effort on measuring API performance and downtimes, probably you’ll never be aware which are your slowest code parts under real world scenario and how these affects the UX
Blog quote: "APM products segments" (From the blog Yoni Goldberg)
"…APM products constitutes 3 major segments:1. Website or API monitoring – external services that constantly monitor uptime and performance via HTTP requests. Can be setup in few minutes. Following are few selected contenders: Pingdom, Uptime Robot, and New Relic 2. Code instrumentation – products family which require to embed an agent within the application to benefit feature slow code detection, exceptions statistics, performance monitoring and many more. Following are few selected contenders: New Relic, App Dynamics 3. Operational intelligence dashboard – these line of products are focused on facilitating the ops team with metrics and curated content that helps to easily stay on top of application performance. This is usually involves aggregating multiple sources of information (application logs, DB logs, servers log, etc) and upfront dashboard design work. Following are few selected contenders: Datadog, Splunk"
The above is a shortened version - see here more best practices and examples
there is component ready to use (rc5 compatible)
ng2-steps
which uses Compiler
to inject component to step container
and service for wiring everything together (data sync)
import { Directive , Input, OnInit, Compiler , ViewContainerRef } from '@angular/core';
import { StepsService } from './ng2-steps';
@Directive({
selector:'[ng2-step]'
})
export class StepDirective implements OnInit{
@Input('content') content:any;
@Input('index') index:string;
public instance;
constructor(
private compiler:Compiler,
private viewContainerRef:ViewContainerRef,
private sds:StepsService
){}
ngOnInit(){
//Magic!
this.compiler.compileComponentAsync(this.content).then((cmpFactory)=>{
const injector = this.viewContainerRef.injector;
this.viewContainerRef.createComponent(cmpFactory, 0, injector);
});
}
}
I think it is the domain that you run your app.
For example, your canvas URL is facebook.yourdomain.com, you should give App domain as .yourdomain.com
i'd recommend using tables for this problem. i'm having a similar issue and as long as the table is just used to display some data and not for the main page layout it is fine.
You may supply extra argument for confirming a new image is posted.
Something like:
def save(self, new_image=False, *args, **kwargs):
if new_image:
small=rescale_image(self.image,width=100,height=100)
self.image_small=SimpleUploadedFile(name,small_pic)
super(Model, self).save(*args, **kwargs)
or pass request variable
def save(self, request=False, *args, **kwargs):
if request and request.FILES.get('image',False):
small=rescale_image(self.image,width=100,height=100)
self.image_small=SimpleUploadedFile(name,small_pic)
super(Model, self).save(*args, **kwargs)
I think these wont break your save when called simply.
You may put this in your admin.py so that this work with admin site too (for second of above solutions):
class ModelAdmin(admin.ModelAdmin):
....
def save_model(self, request, obj, form, change):
instance = form.save(commit=False)
instance.save(request=request)
return instance
I solved this problem on my Galaxy S4 phone by replacing context.startActivity(addAccountIntent); with startActivity(new Intent(Settings.ACTION_ADD_ACCOUNT));
You've got one truly marvelous answer from ray023, but your comment that it's probably overkill is apt. For a "lighter" version....
Block 1 is, IMHO, bad practice. As already pointed out by osknows, mixing error-handling with normal-path code is Not Good. For one thing, if a new error is thrown while there's an Error condition in effect you will not get an opportunity to handle it (unless you're calling from a routine that also has an error handler, where the execution will "bubble up").
Block 2 looks like an imitation of a Try/Catch block. It should be okay, but it's not The VBA Way. Block 3 is a variation on Block 2.
Block 4 is a bare-bones version of The VBA Way. I would strongly advise using it, or something like it, because it's what any other VBA programmer inherting the code will expect. Let me present a small expansion, though:
Private Sub DoSomething()
On Error GoTo ErrHandler
'Dim as required
'functional code that might throw errors
ExitSub:
'any always-execute (cleanup?) code goes here -- analagous to a Finally block.
'don't forget to do this -- you don't want to fall into error handling when there's no error
Exit Sub
ErrHandler:
'can Select Case on Err.Number if there are any you want to handle specially
'display to user
MsgBox "Something's wrong: " & vbCrLf & Err.Description
'or use a central DisplayErr routine, written Public in a Module
DisplayErr Err.Number, Err.Description
Resume ExitSub
Resume
End Sub
Note that second Resume
. This is a trick I learned recently: It will never execute in normal processing, since the Resume <label>
statement will send the execution elsewhere. It can be a godsend for debugging, though. When you get an error notification, choose Debug (or press Ctl-Break, then choose Debug when you get the "Execution was interrupted" message). The next (highlighted) statement will be either the MsgBox
or the following statement. Use "Set Next Statement" (Ctl-F9) to highlight the bare Resume
, then press F8. This will show you exactly where the error was thrown.
As to your objection to this format "jumping around", A) it's what VBA programmers expect, as stated previously, & B) your routines should be short enough that it's not far to jump.
A module in Angular 2 is something which is made from components, directives, services etc. One or many modules combine to make an Application. Modules breakup application into logical pieces of code. Each module performs a single task.
Components in Angular 2 are classes where you write your logic for the page you want to display. Components control the view (html). Components communicate with other components and services.
Use stat
to get the creation time. You can compare the time in the format YYYY-MM-DD HH:MM:SS
lexicographically.
This work on Linux with modification time, creation time is not supported. On AIX, the -c
option might not be supported, but you should be able to get the information anyway, using grep
if nothing else works.
#! /bin/bash
from='2013-08-01 00:00:00.0000000000' # 01-Aug-13
to='2013-08-31 23:59:59.9999999999' # 31-Aug-13
for file in * ; do
modified=$( stat -c%y "$file" )
if [[ $from < $modified && $modified < $to ]] ; then
echo "$file"
fi
done
I use ssh to connect to remote server and have python code execute cv2.VideoCapture(0) to capture remote webcam, then encounter this error message:
error: (-215)size.width>0 && size.height>0 in function imshow
Finally, I have to grant access to /dev/video0 (which is my webcam device) with my user account and the error message was gone. Use usermod to add user into group video
usermod -a -G video user
When you see character sequences like ç and é, it's usually an indication that a UTF-8 file has been opened by a program that reads it in as ANSI (or similar). Unicode characters such as these:
U+00C2 Latin capital letter A with circumflex
U+00C3 Latin capital letter A with tilde
U+0082 Break permitted here
U+0083 No break here
tend to show up in ANSI text because of the variable-byte strategy that UTF-8 uses. This strategy is explained very well here.
The advantage for you is that the appearance of these odd characters makes it relatively easy to find, and thus replace, instances of incorrect conversion.
I believe that, since ANSI always uses 1 byte per character, you can handle this situation with a simple search-and-replace operation. Or more conveniently, with a program that includes a table mapping between the offending sequences and the desired characters, like these:
“ -> “ # should be an opening double curly quote
â€? -> ” # should be a closing double curly quote
Any given text, assuming it's in English, will have a relatively small number of different types of substitutions.
Hope that helps.
The accepted answer is correct, but I prefer:
@{int count = 0;}
@foreach (var item in Model.Resources)
{
@Html.Raw(count <= 3 ? "<div class=\"resource-row\">" : "")
// some code
@Html.Raw(count <= 3 ? "</div>" : "")
@(count++)
}
I hope this inspires someone, even though I'm late to the party.
When you add both to environment variables there will a be a conflict because the two executable have the same name: python.exe
.
Just rename one of them. In my case I renamed it to python3.exe
.
So when I run python
it will execute python.exe
which is 2.7
and when I run python3
it will execute python3.exe
which is 3.6
For images, you could get the available codecs from GDI (System.Drawing) and build your list from that with a little work. This would be the most flexible way to go.
ImageCodecInfo[] codecs = ImageCodecInfo.GetImageEncoders();
The --no-ff
flag prevents git merge
from executing a "fast-forward" if it detects that your current HEAD
is an ancestor of the commit you're trying to merge. A fast-forward is when, instead of constructing a merge commit, git just moves your branch pointer to point at the incoming commit. This commonly occurs when doing a git pull
without any local changes.
However, occasionally you want to prevent this behavior from happening, typically because you want to maintain a specific branch topology (e.g. you're merging in a topic branch and you want to ensure it looks that way when reading history). In order to do that, you can pass the --no-ff
flag and git merge
will always construct a merge instead of fast-forwarding.
Similarly, if you want to execute a git pull
or use git merge
in order to explicitly fast-forward, and you want to bail out if it can't fast-forward, then you can use the --ff-only
flag. This way you can regularly do something like git pull --ff-only
without thinking, and then if it errors out you can go back and decide if you want to merge or rebase.
in case if your table has tbody
let tbl = document.getElementById("tbl").getElementsByTagName('tbody')[0];
console.log(tbl.rows[0].cells[0].innerHTML)
From my recent experience, JsonReader#setLenient
basically makes the parser very tolerant, even to allow malformed JSON data.
But for certain data retrieved from your trusted RESTful API(s), this error might be caused by trailing white spaces. In such cases, simply trim
the data would avoid the error:
String trimmed = result1.trim();
Then gson.fromJson(trimmed, T)
might work. Surely this only covers a special case, so YMMV.
You have a typo - it is trustStore
.
Apart from setting the variables with System.setProperty(..)
, you can also use
-Djavax.net.ssl.keyStore=path/to/keystore.jks
For those blessed with MySQL >= 5.1.12, you can control this option globally at runtime:
SET GLOBAL log_output = 'TABLE';
SET GLOBAL general_log = 'ON';
mysql.general_log
If you prefer to output to a file instead of a table:
SET GLOBAL log_output = "FILE";
the default.SET GLOBAL general_log_file = "/path/to/your/logfile.log";
SET GLOBAL general_log = 'ON';
I prefer this method to editing .cnf files because:
my.cnf
file and potentially permanently turning on logging/var/log /var/data/log
/opt /home/mysql_savior/var
For more information, see MySQL 5.1 Reference Manual - Server System Variables - general_log
SELECT TOP 1 column_name, LEN(column_name) AS Lenght FROM table_name ORDER BY LEN(column_name) DESC
The else
case is unncecessary, when you create a string
object it is empty by default.
Did you update the project (right-click on the project, "Maven" > "Update project...")? Otherwise, you need to check if pom.xml
contains the necessary slf4j dependencies, e.g.:
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>jcl-over-slf4j</artifactId>
<version>1.7.0</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.0</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.0</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.14</version>
</dependency>
On Windows, if you're running PuTTY/Pageant, the fingerprint is listed when you load your PuTTY (.ppk) key into Pageant. It is pretty useful in case you forget which one you're using.
So, far I have been exiting and reentering the Interpreter because re importing the file again is not working for me.
Yes, just saying import
again gives you the existing copy of the module from sys.modules
.
You can say reload(module)
to update sys.modules
and get a new copy of that single module, but if any other modules have a reference to the original module or any object from the original module, they will keep their old references and Very Confusing Things will happen.
So if you've got a module a
, which depends on module b
, and b
changes, you have to ‘reload b’ followed by ‘reload a’. If you've got two modules which depend on each other, which is extremely common when those modules are part of the same package, you can't reload them both: if you reload p.a
it'll get a reference to the old p.b
, and vice versa. The only way to do it is to unload them both at once by deleting their items from sys.modules
, before importing them again. This is icky and has some practical pitfalls to do with modules entries being None as a failed-relative-import marker.
And if you've got a module which passes references to its objects to system modules — for example it registers a codec, or adds a warnings handler — you're stuck; you can't reload the system module without confusing the rest of the Python environment.
In summary: for all but the simplest case of one self-contained module being loaded by one standalone script, reload()
is very tricky to get right; if, as you imply, you are using a ‘package’, you will probably be better off continuing to cycle the interpreter.
Use Distinct()
but keep in mind that it uses the default equality comparer to compare values, so if you want anything beyond that you need to implement your own comparer.
Please see http://msdn.microsoft.com/en-us/library/bb348436.aspx for an example.
In order to approach to Modular design pattern, you need to understand these concept first:
Immediately-Invoked Function Expression (IIFE):
(function() {
// Your code goes here
}());
There are two ways you can use the functions. 1. Function declaration 2. Function expression.
Here are using function expression.
What is namespace? Now if we add the namespace to the above piece of code then
var anoyn = (function() {
}());
What is closure in JS?
It means if we declare any function with any variable scope/inside another function (in JS we can declare a function inside another function!) then it will count that function scope always. This means that any variable in outer function will be read always. It will not read the global variable (if any) with the same name. This is also one of the objective of using modular design pattern avoiding naming conflict.
var scope = "I am global";
function whatismyscope() {
var scope = "I am just a local";
function func() {return scope;}
return func;
}
whatismyscope()()
Now we will apply these three concepts I mentioned above to define our first modular design pattern:
var modularpattern = (function() {
// your module code goes here
var sum = 0 ;
return {
add:function() {
sum = sum + 1;
return sum;
},
reset:function() {
return sum = 0;
}
}
}());
alert(modularpattern.add()); // alerts: 1
alert(modularpattern.add()); // alerts: 2
alert(modularpattern.reset()); // alerts: 0
The objective is to hide the variable accessibility from the outside world.
Hope this helps. Good Luck.
If you want your container to have it's own virtual ethernet socket (with it's own MAC address), iptables, then use the Macvlan driver. This may be necessary to route traffic out to your/ISPs router.
https://docs.docker.com/engine/userguide/networking/get-started-macvlan
In addition to existing answers:
RUN apt-get update && apt-get install -y gnupg
-y flag agrees to terms during installation process. It is important not to break the build
Most straightforward option:
plot(var1[var3<155],var2[var3<155])
It does not look good because of code redundancy, but is ok for fastn
dirty hacking.
<a name='fb_share' type='button_count' href='http://www.facebook.com/sharer.php?appId={YOUR APP ID}&link=<?php the_permalink() ?>' rel='nofollow'>Share</a><script src='http://static.ak.fbcdn.net/connect.php/js/FB.Share' type='text/javascript'></script>
You can be used this step is very useful:
for i in `ls -l folder1 | grep -v total | awk '{print $ ( ? )}'`
do
cd folder1
cp $i folder2/$i.`date +%m%d%Y`
done
Simply difference between Forward(ServletRequest request, ServletResponse response)
and sendRedirect(String url)
is
forward():
forward()
method is executed in the server side.forward ()
method is provided by the servlet container.forward()
method is faster than sendRedirect()
method.RequestDispatcher
interface.sendRedirect():
getActivity()- Return the Activity this fragment is currently associated with.
Some people like to use the Paint
, CellPainting
or CellFormatting
events, but note that changing a style in these events causes recursive calls. If you use DataBindingComplete
it will execute only once. The argument for CellFormatting
is that it is called only on visible cells, so you don't have to format non-visible cells, but you format them multiple times.
You must remove the constraints
from the column before removing the column. The name you are referencing is a default constraint
.
e.g.
alter table CompanyTransactions drop constraint [df__CompanyTr__Creat__0cdae408];
alter table CompanyTransactions drop column [Created];
JFrame.dispose()
public void dispose()
Releases all of the native screen resources used by this Window, its subcomponents, and all of its owned children. That is, the resources for these Components will be destroyed, any memory they consume will be returned to the OS, and they will be marked as undisplayable. The Window and its subcomponents can be made displayable again by rebuilding the native resources with a subsequent call to pack or show. The states of the recreated Window and its subcomponents will be identical to the states of these objects at the point where the Window was disposed (not accounting for additional modifications between those actions).
Note: When the last displayable window within the Java virtual machine (VM) is disposed of, the VM may terminate. See AWT Threading Issues for more information.
System.exit()
public static void exit(int status)
Terminates the currently running Java Virtual Machine. The argument serves as a status code; by convention, a nonzero status code indicates abnormal termination. This method calls the exit method in class Runtime. This method never returns normally.
The call System.exit(n)
is effectively equivalent to the call:
Runtime.getRuntime().exit(n)
Using the ${#VAR}
syntax will calculate the number of characters in a variable.
https://www.gnu.org/software/bash/manual/bashref.html#Shell-Parameter-Expansion
Another solution which is permanent in nature between sessions without requiring you to run a specific command when opening chrome is as follows:
In my case, it was connected with the branch name that I had already created.
To fix the issue I've created a branch with the name that for certain shouldn't exist, like:
git checkout -b some_unknown_branch
Then I've cleared all my other branches(not active) because they were just unnecessary garbage.
git branch | grep -v \* | grep -v master | xargs git branch -D
and then renamed my current branch with the name that I've intended, like:
git checkout -m my_desired_branch_name
In my experience, it has expired at the end of that month. That is based on the fact that I can use it during that month, and that month is when my bank sends a new one.
please try these
<form action="Delegate_update.php" method="post">
Name
<input type="text" name= "Name" value= "<?php echo $row['Name']; ?> "size=10>
Username
<input type="text" name= "User_name" value= "<?php echo $row['User_name']; ?> "size=10>
Password
<input type="text" name= "User_password" value= "<?php echo $row['User_password']; ?>" size=17>
<input type="submit" name= "submit" value="Update">
</form>
OP here (I am answering this question after two years, the post made by Daniel Cerecedo was not bad at a time, but the web services are developing very fast)
After three years of full-time software development (with focus also on software architecture, project management and microservice architecture) I definitely choose the second way (but with one general endpoint) as the best one.
If you have a special endpoint for images, it gives you much more power over handling those images.
We have the same REST API (Node.js) for both - mobile apps (iOS/android) and frontend (using React). This is 2017, therefore you don't want to store images locally, you want to upload them to some cloud storage (Google cloud, s3, cloudinary, ...), therefore you want some general handling over them.
Our typical flow is, that as soon as you select an image, it starts uploading on background (usually POST on /images endpoint), returning you the ID after uploading. This is really user-friendly, because user choose an image and then typically proceed with some other fields (i.e. address, name, ...), therefore when he hits "send" button, the image is usually already uploaded. He does not wait and watching the screen saying "uploading...".
The same goes for getting images. Especially thanks to mobile phones and limited mobile data, you don't want to send original images, you want to send resized images, so they do not take that much bandwidth (and to make your mobile apps faster, you often don't want to resize it at all, you want the image that fits perfectly into your view). For this reason, good apps are using something like cloudinary (or we do have our own image server for resizing).
Also, if the data are not private, then you send back to app/frontend just URL and it downloads it from cloud storage directly, which is huge saving of bandwidth and processing time for your server. In our bigger apps there are a lot of terabytes downloaded every month, you don't want to handle that directly on each of your REST API server, which is focused on CRUD operation. You want to handle that at one place (our Imageserver, which have caching etc.) or let cloud services handle all of it.
Cons : The only "cons" which you should think of is "not assigned images". User select images and continue with filling other fields, but then he says "nah" and turn off the app or tab, but meanwhile you successfully uploaded the image. This means you have uploaded an image which is not assigned anywhere.
There are several ways of handling this. The most easiest one is "I don't care", which is a relevant one, if this is not happening very often or you even have desire to store every image user send you (for any reason) and you don't want any deletion.
Another one is easy too - you have CRON and i.e. every week and you delete all unassigned images older than one week.
curl {url for downloading zip file} | 7z a -tzip {project name}-{branch name}/{folder path in that branch}
for example:
curl https://github.com/hnvn/flutter_shimmer/archive/master.zip | 7z a -tzip flutter_shimmer-master/examples
Create a BufferedImage from file and make it TYPE_INT_RGB
import java.io.*;
import java.awt.image.*;
import javax.imageio.*;
public class Main{
public static void main(String args[]){
try{
BufferedImage img = new BufferedImage(
500, 500, BufferedImage.TYPE_INT_RGB );
File f = new File("MyFile.png");
int r = 5;
int g = 25;
int b = 255;
int col = (r << 16) | (g << 8) | b;
for(int x = 0; x < 500; x++){
for(int y = 20; y < 300; y++){
img.setRGB(x, y, col);
}
}
ImageIO.write(img, "PNG", f);
}
catch(Exception e){
e.printStackTrace();
}
}
}
This paints a big blue streak across the top.
If you want it ARGB, do it like this:
try{
BufferedImage img = new BufferedImage(
500, 500, BufferedImage.TYPE_INT_ARGB );
File f = new File("MyFile.png");
int r = 255;
int g = 10;
int b = 57;
int alpha = 255;
int col = (alpha << 24) | (r << 16) | (g << 8) | b;
for(int x = 0; x < 500; x++){
for(int y = 20; y < 30; y++){
img.setRGB(x, y, col);
}
}
ImageIO.write(img, "PNG", f);
}
catch(Exception e){
e.printStackTrace();
}
Open up MyFile.png, it has a red streak across the top.
If you don't know the size of the strings, you can do something like this:
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main(){
const char* q1 = "First String";
const char* q2 = " Second String";
char * qq = (char*) malloc((strlen(q1)+ strlen(q2))*sizeof(char));
strcpy(qq,q1);
strcat(qq,q2);
printf("%s\n",qq);
return 0;
}
\bdbo\..*fn
I was looking through a ton of java code for a specific library: car.csclh.server.isr.businesslogic.TypePlatform
(although I only knew car
and Platform
at the time). Unfortunately, none of the other suggestions here worked for me, so I figured I'd post this.
Here's the regex I used to find it:
\bcar\..*Platform
You're right that it involves a loop, but this is, at least, made simple by use of the each()
method:
$('.target').each(
function(){
// iterate through each of the `.target` elements, and do stuff in here
// `this` and `$(this)` refer to the current `.target` element
var images = $(this).find('img'),
imageWidth = images.width(); // returns the width of the _first_ image
numImages = images.length;
$(this).css('width', (imageWidth*numImages));
});
References:
You can also set selected image bar tint color by key path:
Hope this will help you!! Thanks
*data interprets arguments as tuples, instead you have to pass **data which interprets the arguments as dictionary.
data = {'school':'DAV', 'class': '7', 'name': 'abc', 'city': 'pune'}
def my_function(**data):
schoolname = data['school']
cityname = data['city']
standard = data['class']
studentname = data['name']
You can call the function like this:
my_function(**data)
Kind of a hack because it's not really python doing anything special here, but if you run the export command in the same sub-shell, you will probably get the result you want.
import os
cmd = "export MY_DATA='1234'; echo $MY_DATA" # or whatever command
os.system(cmd)
I am amazed how I've not been able to find a clear example of how to authenticate an user right from the login screen down to using the Authorize attribute over my ApiController methods after several hours of Googling.
That's because you are getting confused about these two concepts:
Authentication is the mechanism whereby systems may securely identify their users. Authentication systems provide an answers to the questions:
Authorization is the mechanism by which a system determines what level of access a particular authenticated user should have to secured resources controlled by the system. For example, a database management system might be designed so as to provide certain specified individuals with the ability to retrieve information from a database but not the ability to change data stored in the datbase, while giving other individuals the ability to change data. Authorization systems provide answers to the questions:
The Authorize
attribute in MVC is used to apply access rules, for example:
[System.Web.Http.Authorize(Roles = "Admin, Super User")]
public ActionResult AdministratorsOnly()
{
return View();
}
The above rule will allow only users in the Admin and Super User roles to access the method
These rules can also be set in the web.config file, using the location
element. Example:
<location path="Home/AdministratorsOnly">
<system.web>
<authorization>
<allow roles="Administrators"/>
<deny users="*"/>
</authorization>
</system.web>
</location>
However, before those authorization rules are executed, you have to be authenticated to the current web site.
Even though these explain how to handle unauthorized requests, these do not demonstrate clearly something like a LoginController or something like that to ask for user credentials and validate them.
From here, we could split the problem in two:
Authenticate users when consuming the Web API services within the same Web application
This would be the simplest approach, because you would rely on the Authentication in ASP.Net
This is a simple example:
<authentication mode="Forms">
<forms
protection="All"
slidingExpiration="true"
loginUrl="account/login"
cookieless="UseCookies"
enableCrossAppRedirects="false"
name="cookieName"
/>
</authentication>
Users will be redirected to the account/login route, there you would render custom controls to ask for user credentials and then you would set the authentication cookie using:
if (ModelState.IsValid)
{
if (Membership.ValidateUser(model.UserName, model.Password))
{
FormsAuthentication.SetAuthCookie(model.UserName, model.RememberMe);
return RedirectToAction("Index", "Home");
}
else
{
ModelState.AddModelError("", "The user name or password provided is incorrect.");
}
}
// If we got this far, something failed, redisplay form
return View(model);
Cross - platform authentication
This case would be when you are only exposing Web API services within the Web application therefore, you would have another client consuming the services, the client could be another Web application or any .Net application (Win Forms, WPF, console, Windows service, etc)
For example assume that you will be consuming the Web API service from another web application on the same network domain (within an intranet), in this case you could rely on the Windows authentication provided by ASP.Net.
<authentication mode="Windows" />
If your services are exposed on the Internet, then you would need to pass the authenticated tokens to each Web API service.
For more info, take a loot to the following articles:
I got this error when running Visual Studio. By running Visual Studio as Administrator the application was able to access the Security logs as it then had sufficient permissions (thus preventing the error).
An example in Python's documentation simply uses line.strip()
.
Perl's chomp
function removes one linebreak sequence from the end of a string only if it's actually there.
Here is how I plan to do that in Python, if process
is conceptually the function that I need in order to do something useful to each line from this file:
import os
sep_pos = -len(os.linesep)
with open("file.txt") as f:
for line in f:
if line[sep_pos:] == os.linesep:
line = line[:sep_pos]
process(line)
In the ideal case we should have enough memory to read the file in one read operation. That would be the best performer because we let the system manage File System , allocation units and HDD at will. In practice you are fortunate to know the file sizes in advance, just use the average file size rounded up to 4K (default allocation unit on NTFS). And best of all : create a benchmark to test multiple options.
Putting this question in the context of NIO and NIO.2 in java 7, async IO is one step more advanced than non-blocking.
With java NIO non-blocking calls, one would set all channels (SocketChannel, ServerSocketChannel, FileChannel, etc) as such by calling AbstractSelectableChannel.configureBlocking(false)
.
After those IO calls return, however, you will likely still need to control the checks such as if and when to read/write again, etc.
For instance,
while (!isDataEnough()) {
socketchannel.read(inputBuffer);
// do something else and then read again
}
With the asynchronous api in java 7, these controls can be made in more versatile ways.
One of the 2 ways is to use CompletionHandler
. Notice that both read
calls are non-blocking.
asyncsocket.read(inputBuffer, 60, TimeUnit.SECONDS /* 60 secs for timeout */,
new CompletionHandler<Integer, Object>() {
public void completed(Integer result, Object attachment) {...}
public void failed(Throwable e, Object attachment) {...}
}
}
you are thinking too much... Take a look at this [i think this is what you wanted - if not let me know]
css
.even{background: red; color:white;}
.odd{background: darkred; color:white;}
html
<div class="container">
<ul class="list-unstyled">
<li class="col-md-6 odd">Dumby Content</li>
<li class="col-md-6 odd">Dumby Content</li>
<li class="col-md-6 even">Dumby Content</li>
<li class="col-md-6 even">Dumby Content</li>
<li class="col-md-6 odd">Dumby Content</li>
<li class="col-md-6 odd">Dumby Content</li>
</ul>
</div>
You can try something like this:
strncpy(new_str, str1, strlen(str1));
strcat(new_str, str2);
More info on strncpy: http://www.cplusplus.com/reference/clibrary/cstring/strncpy/
If our CustomTableSeeder is in same directory with DatabaseSeeder we should use like below:
$this->call('database\seeds\CustomTableSeeder');
in our DatabaseSeeder File; then another error will be thrown that says: 'DB Class not found' then we should add our DB facade to our CustomTableSeeder File like below:
use Illuminate\Support\Facades\DB;
it worked for me!
Your query is very close. You should be able to use the following which includes the subject
in the final select list:
select u.name, u.subject, u.marks
from student s
unpivot
(
marks
for subject in (Maths, Science, English)
) u;
I was getting this error for a different reason than those listed here, and could not find the solution easily, so I figured I would post here.
Hopefully this is helpful to someone.
My issue was with referencing files in the program. It was not able to find the file listed, because when I was coding it I had the file I wanted to reference in the top level directory and just called
"my_file.png"
when I was calling the files.
pyinstaller did not like this, because even when I was running it from the same folder, it was expecting a full path:
"C:\Files\my_file.png"
Once I changed all of my paths, to the full version of their path, it fixed this issue.
It seems most web sites out on the internet use 1460 bytes for the value of MTU. Sometimes it's 1452 and if you are on a VPN it will drop even more for the IPSec headers.
The default window size varies quite a bit up to a max of 65535 bytes. I use http://tcpcheck.com to look at my own source IP values and to check what other Internet vendors are using.
You can just use the pipe on its own:
"string1|string2"
for example:
String s = "string1, string2, string3";
System.out.println(s.replaceAll("string1|string2", "blah"));
Output:
blah, blah, string3
The main reason to use parentheses is to limit the scope of the alternatives:
String s = "string1, string2, string3";
System.out.println(s.replaceAll("string(1|2)", "blah"));
has the same output. but if you just do this:
String s = "string1, string2, string3";
System.out.println(s.replaceAll("string1|2", "blah"));
you get:
blah, stringblah, string3
because you've said "string1" or "2".
If you don't want to capture that part of the expression use ?:
:
String s = "string1, string2, string3";
System.out.println(s.replaceAll("string(?:1|2)", "blah"));
If using Visual Studio 2010 you can right-click on the project for the service, and select properties
. Then select the Web
tab. Under the Servers
section you can configure the URL. There is also a button to create the virtual directory.
select <column list> into <dest. table> from <source table>;
You could do this way.
SELECT windows_release, windows_service_pack_level,
windows_sku, os_language_version
into new_table_name
FROM sys.dm_os_windows_info OPTION (RECOMPILE);
public static Action<Func<TabPage, bool>> GetTabHider(this TabControl container) {
if (container == null) throw new ArgumentNullException("container");
var orderedCache = new List<TabPage>();
var orderedEnumerator = container.TabPages.GetEnumerator();
while (orderedEnumerator.MoveNext()) {
var current = orderedEnumerator.Current as TabPage;
if (current != null) {
orderedCache.Add(current);
}
}
return (Func<TabPage, bool> where) => {
if (where == null) throw new ArgumentNullException("where");
container.TabPages.Clear();
foreach (TabPage page in orderedCache) {
if (where(page)) {
container.TabPages.Add(page);
}
}
};
}
Used like this:
var showOnly = this.TabContainer1.GetTabHider();
showOnly((tab) => tab.Text != "tabPage1");
Original ordering is retained by retaining a reference to the anonymous function instance.
Use this to get time from 00:00:00 to 23:59:59
If your time is having date from it by using 'LT or LTS'
var now = moment('23:59:59','HHmmss').format("HH:mm:ss")
Your code "for /f "tokens=* delims=" %%x in (a.txt) do echo %%x" will work on most Windows Operating Systems unless you have modified commands.
So you could instead "cd" into the directory to read from before executing the "for /f" command to follow out the string. For instance if the file "a.txt" is located at C:\documents and settings\%USERNAME%\desktop\a.txt then you'd use the following.
cd "C:\documents and settings\%USERNAME%\desktop"
for /f "tokens=* delims=" %%x in (a.txt) do echo %%x
echo.
echo.
echo.
pause >nul
exit
But since this doesn't work on your computer for x reason there is an easier and more efficient way of doing this. Using the "type" command.
@echo off
color a
cls
cd "C:\documents and settings\%USERNAME%\desktop"
type a.txt
echo.
echo.
pause >nul
exit
Or if you'd like them to select the file from which to write in the batch you could do the following.
@echo off
:A
color a
cls
echo Choose the file that you want to read.
echo.
echo.
tree
echo.
echo.
echo.
set file=
set /p file=File:
cls
echo Reading from %file%
echo.
type %file%
echo.
echo.
echo.
set re=
set /p re=Y/N?:
if %re%==Y goto :A
if %re%==y goto :A
exit
When at the "Add resource folder", Build Path -> Configure Build Path -> Source (Tab) -> Add Folder -> Create new Folder
add "my-resource.txt" file inside the new folder. Then in your code:
InputStream res =
Main.class.getResourceAsStream("/my-resource.txt");
BufferedReader reader =
new BufferedReader(new InputStreamReader(res));
String line = null;
while ((line = reader.readLine()) != null) {
System.out.println(line);
}
reader.close();
This also could be easiest way to add items in ListBox.
for (int i = 0; i < MyList.Count; i++)
{
listBox1.Items.Add(MyList.ElementAt(i));
}
Further improvisation of this code can add items at runtime.
Save it to the same variable
data["column01"].where(data["column01"]< 5, inplace=True)
Save it to a separate variable
data["column02"] = data["column01"].where(data["column1"]< 5)
But, you can always overwrite the variable
data["column01"] = data["column01"].where(data["column1"]< 5)
FYI: In default inplace = False
In Postgres 9.4 or later, this is simplest and fastest:
SELECT c.*
FROM comments c
JOIN unnest('{1,3,2,4}'::int[]) WITH ORDINALITY t(id, ord) USING (id)
ORDER BY t.ord;
WITH ORDINALITY
was introduced with in Postgres 9.4.
No need for a subquery, we can use the set-returning function like a table directly. (A.k.a. "table-function".)
A string literal to hand in the array instead of an ARRAY constructor may be easier to implement with some clients.
For convenience (optionally), copy the column name we are joining to (id
in the example), so we can join with a short USING
clause to only get a single instance of the join column in the result.
Detailed explanation:
But now it is not working and I contacted our hosting team then they told me to use smtp
Newsflash - it was using SMTP before. They've not provided you with the information you need to solve the problem - or you've not relayed it accurately here.
Its possible that they've disabled the local MTA on the webserver, in which case you'll need to connect the SMTP port on a remote machine. There are lots of toolkits which will do the heavy lifting for you. Personally I like phpmailer because it adds other functionality.
Certainly if they've taken away a facility which was there before and your paying for a service then your provider should be giving you better support than that (there are also lots of programs to drop in in place of a full MTA which would do the job).
C.
Supplementing the answer by p.s.w.g
, here are three other ways of achieving this using lodash
4.17.5
, without using _.includes()
:
Say you want to add object entry
to an array of objects numbers
, only if entry
does not exist already.
let numbers = [
{ to: 1, from: 2 },
{ to: 3, from: 4 },
{ to: 5, from: 6 },
{ to: 7, from: 8 },
{ to: 1, from: 2 } // intentionally added duplicate
];
let entry = { to: 1, from: 2 };
/*
* 1. This will return the *index of the first* element that matches:
*/
_.findIndex(numbers, (o) => { return _.isMatch(o, entry) });
// output: 0
/*
* 2. This will return the entry that matches. Even if the entry exists
* multiple time, it is only returned once.
*/
_.find(numbers, (o) => { return _.isMatch(o, entry) });
// output: {to: 1, from: 2}
/*
* 3. This will return an array of objects containing all the matches.
* If an entry exists multiple times, if is returned multiple times.
*/
_.filter(numbers, _.matches(entry));
// output: [{to: 1, from: 2}, {to: 1, from: 2}]
If you want to return a Boolean
, in the first case, you can check the index that is being returned:
_.findIndex(numbers, (o) => { return _.isMatch(o, entry) }) > -1;
// output: true
Another easy way:
SELECT Date, User, Status, Notes
FROM Test_Most_Recent
WHERE Date in ( SELECT MAX(Date) from Test_Most_Recent group by User)
Quotes:
"url: http://www.example-site.com/"
To clarify, I meant “quote the value” and originally thought the entire thing was the value. If http://www.example-site.com/
is the value, just quote it like so:
url: "http://www.example-site.com/"
The most voted answer covers most part but I would like to high light use case point of view. Can kafka do that rabbit mq can do, answer is yes but can rabbit mq do everything that kafka does, the answer is no.
The thing that rabbit mq cannot do that makes kafka apart, is distributed message processing. With this now read back the most voted answer and it will make more sense.
To elaborate, take a use case where you need to create a messaging system that has super high throughput for example "likes" in facebook and You have chosen rabbit mq for that. You created an exchange and queue and a consumer where all publishers (in this case FB users) can publish 'likes' messages. Since your throughput is high, you will create multiple threads in consumer to process messages in parallel but you still bounded by the hardware capacity of the machine where consumer is running. Assuming that one consumer is not sufficient to process all messages - what would you do?
That is the core problem that kafka solves. It lets you create distributed partitions (Queue in rabbit mq) and distributed consumer that talk to each other. That ensures your messages in a topic get processed by consumers distributed in various nodes (Machines).
Kafka brokers ensure that messages get load balanced across all partitions of that topic. Consumer group make sure that all consumer talk to each other and message does not get processed twice.
But in real life you will not face this problem unless your throughput is seriously high because rabbit mq can also process data very fast even with one consumer.
I find the best (and least frustrating) path is to start with Allow from All
, then, when you know it will work that way, scale it back to the more secure Allow from 127.0.0.1
or Allow from ::1
(localhost).
As long as your firewall is configured properly, Allow from all
shouldn't cause any problems, but it is better to only allow from localhost if you don't need other computers to be able to access your site.
Don't forget to restart Apache whenever you make changes to httpd.conf. They will not take effect until the next start.
Hopefully this is enough to get you started, there is lots of documentation available online.
You can submit form by just clicking on checkbox by simple method in JavaScript. Inside form tag or Input attribute add following attribute:
onchange="this.form.submit()"
Example:
<form>
<div>
<input type="checkbox">
</div>
</form>
You can use
start "" "%USERPROFILE%\Desktop\BGInfo\bginfo.exe" "%USERPROFILE%\Desktop\BGInfo\dc_bginfo.bgi"
or
start "" /D "%USERPROFILE%\Desktop\BGInfo" bginfo.exe dc_bginfo.bgi
or
"%USERPROFILE%\Desktop\BGInfo\bginfo.exe" "%USERPROFILE%\Desktop\BGInfo\dc_bginfo.bgi"
or
cd /D "%USERPROFILE%\Desktop\BGInfo"
bginfo.exe dc_bginfo.bgi
Help on commands start and cd is output by executing in a command prompt window help start
or start /?
and help cd
or cd /?
.
But I do not understand why you need a batch file at all for starting the application with the additional parameter. Create a shortcut (*.lnk) on your desktop for this application. Then right click on the shortcut, left click on Properties and append after a space character "%USERPROFILE%\Desktop\BGInfo\dc_bginfo.bgi"
as parameter.
run configuration -> arguments -> vm arguments
(can also be placed in the debug configuration under Debug Configuration->Arguments->VM Arguments)
Basic Example
folder = async () => {
let fold = await getFold();
//await localStorage.save('folder');
return fold;
};
some thing as follows ::
Add this After the body tag
This is a rough sketch, you will need to modify it according to your needs.
<script>
var f = document.createElement("form");
f.setAttribute('method',"post");
f.setAttribute('action',"submit.php");
var i = document.createElement("input"); //input element, text
i.setAttribute('type',"text");
i.setAttribute('name',"username");
var s = document.createElement("input"); //input element, Submit button
s.setAttribute('type',"submit");
s.setAttribute('value',"Submit");
f.appendChild(i);
f.appendChild(s);
//and some more input elements here
//and dont forget to add a submit button
document.getElementsByTagName('body')[0].appendChild(f);
</script>
I too struggled with something similar. My guess is your actual problem is connecting to a SQL Express instance running on a different machine. The steps to do this can be summarized as follows:
At this point you should be able to connect remotely, using SQL Authentication, user "sqlUser" password "sql" to the SQL Express instance configured as above. A final tip and easy way to check this out is to create an empty text file with the .UDL extension, say "Test.UDL" on your desktop. Double-clicking to edit this file invokes the Microsoft Data Link Properties dialog with which you can quickly test your remote SQL connection
If you installed it using the PKG installer, you can do:
pkgutil --pkgs
or better:
pkgutil --pkgs | grep org.python.Python
which will output something like:
org.python.Python.PythonApplications-2.7
org.python.Python.PythonDocumentation-2.7
org.python.Python.PythonFramework-2.7
org.python.Python.PythonProfileChanges-2.7
org.python.Python.PythonUnixTools-2.7
you can now select which packages you will unlink (remove).
This is the unlink documentation:
--unlink package-id
Unlinks (removes) each file referenced by package-id. WARNING: This command makes no attempt to perform reference counting or dependency analy-
sis. It can easily remove files required by your system. It may include unexpected files due to package tainting. Use the --files command first
to double check.
In my example you will type
pkgutil --unlink org.python.Python.PythonApplications-2.7
pkgutil --unlink org.python.Python.PythonDocumentation-2.7
pkgutil --unlink org.python.Python.PythonFramework-2.7
pkgutil --unlink org.python.Python.PythonProfileChanges-2.7
pkgutil --unlink org.python.Python.PythonUnixTools-2.7
or in one single line:
pkgutil --pkgs | grep org.python.Python | xargs -L1 pkgutil -f --unlink
Important: --unlink is not available anymore starting with Lion (as of Q1`2014 that would include Lion, Mountain Lion, and Mavericks). If anyone that comes to this instructions try to use it with lion, should try instead to adapt it with what this post is saying: https://wincent.com/wiki/Uninstalling_packages_(.pkg_files)_on_Mac_OS_X
More general sorted, where the key
keyword defines the sorting method, minus before numerical type indicates descending:
>>> x = Counter({'a':5, 'b':3, 'c':7})
>>> sorted(x.items(), key=lambda k: -k[1]) # Ascending
[('c', 7), ('a', 5), ('b', 3)]
You can use SQLAlchemy's or_
function to search in more than one column (the underscore is necessary to distinguish it from Python's own or
).
Here's an example:
from sqlalchemy import or_
query = meta.Session.query(User).filter(or_(User.firstname.like(searchVar),
User.lastname.like(searchVar)))
This normally happens when the transaction is started and either it is not committed or it is not rollback.
In case the error comes in your stored procedure, this can lock the database tables because transaction is not completed due to some runtime errors in the absence of exception handling You can use Exception handling like below. SET XACT_ABORT
SET XACT_ABORT ON
SET NoCount ON
Begin Try
BEGIN TRANSACTION
//Insert ,update queries
COMMIT
End Try
Begin Catch
ROLLBACK
End Catch
As @kirbyfan64sos notes in a comment, /home
is NOT your home directory (a.k.a. home folder):
The fact that /home
is an absolute, literal path that has no user-specific component provides a clue.
While /home
happens to be the parent directory of all user-specific home directories on Linux-based systems, you shouldn't even rely on that, given that this differs across platforms: for instance, the equivalent directory on macOS is /Users
.
What all Unix platforms DO have in common are the following ways to navigate to / refer to your home directory:
cd
with NO argument changes to your home dir., i.e., makes your home dir. the working directory.
cd # changes to home dir; e.g., '/home/jdoe'
~
by itself / unquoted ~/
at the start of a path string represents your home dir. / a path starting at your home dir.; this is referred to as tilde expansion (see man bash
)
echo ~ # outputs, e.g., '/home/jdoe'
$HOME
- as part of either unquoted or preferably a double-quoted string - refers to your home dir. HOME
is a predefined, user-specific environment variable:
cd "$HOME/tmp" # changes to your personal folder for temp. files
Thus, to create the desired folder, you could use:
mkdir "$HOME/bin" # same as: mkdir ~/bin
Note that most locations outside your home dir. require superuser (root user) privileges in order to create files or directories - that's why you ran into the Permission denied
error.
You're using jQuery version 3.1.0 and the load event is deprecated for use since jQuery version 1.8. The load event is removed from jQuery 3.0. Instead you can use on method and bind the JavaScript load event:
$(window).on('load', function () {
alert("Window Loaded");
});
It looks like this error 0xe0434352 applies to a number of different errors.
In case it helps anyone, I ran into this error when I was trying to install my application on a new Windows 10 installation. It worked on other machines, and looked like the app momentarily would start before dying. After much trial and error the problem turned out to be that the app required DirectX9. Though a later version of DirectX was present it had to have version 9. Hope that saves someone some frustration.
If you want to reset every RowId via content provider try this
rowCounter=1;
do {
rowId = cursor.getInt(0);
ContentValues values;
values = new ContentValues();
values.put(Table_Health.COLUMN_ID,
rowCounter);
updateData2DB(context, values, rowId);
rowCounter++;
while (cursor.moveToNext());
public static void updateData2DB(Context context, ContentValues values, int rowId) {
Uri uri;
uri = Uri.parseContentProvider.CONTENT_URI_HEALTH + "/" + rowId);
context.getContentResolver().update(uri, values, null, null);
}
I don't think "blueprint" is a good word to use. A blueprint tells you how to build something. An interface specifically avoids telling you how to build something.
An interface defines how you can interact with a class, i.e. what methods it supports.
Timmerman's solution works great when running the code, but if you don't want to get Undefined name
errors when using pyflakes or a similar linter you could use the following instead:
try:
import __builtin__
input = getattr(__builtin__, 'raw_input')
except (ImportError, AttributeError):
pass
Try this:
git fetch --all
git reset --hard origin/master
Explanation:
git fetch
downloads the latest from remote without trying to merge or rebase anything.
Please let me know if you have any questions!
There are 3 steps that needs to be run.
It is very interesting that this simplest usage is not clearly described anywhere. And i believe there is a danger, you should pay attention to the verified_email
parameter coming in the response. Because if I am not wrong it may yield fake emails to register your application. (This is just my interpretation, has a fair chance that I may be wrong!)
I find facebook's OAuth mechanics much much clearly described.
Depending on your application, you may want to consider using System.nanoTime()
instead.
In regards to using extension to define data type. I noticed that MailChimp API is doing it, but I don't think this is a good idea.
GET /zzz/cars.json/1
GET /zzz/cars.xml/1
My sound like a good idea, but I think "older" approach is better - using HTTP headers
GET /xxx/cars/1
Accept: application/json
Also HTTP headers are much better for cross data type communication (if ever someone would need it)
POST /zzz/cars
Content-Type: application/xml <--- indicates we sent XML to server
Accept: application/json <--- indicates we want get data back in JSON format
To use the second way, add 1:
print $#arr + 1; # Second way to print array size
With Swift 5, UIButton
has a setTitleColor(_:for:)
method. setTitleColor(_:for:)
has the following declaration:
Sets the color of the title to use for the specified state.
func setTitleColor(_ color: UIColor?, for state: UIControlState)
The following Playground sample code show how to create a UIbutton
in a UIViewController
and change it's title color using setTitleColor(_:for:)
:
import UIKit
import PlaygroundSupport
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
view.backgroundColor = UIColor.white
// Create button
let button = UIButton(type: UIButton.ButtonType.system)
// Set button's attributes
button.setTitle("Print 0", for: UIControl.State.normal)
button.setTitleColor(UIColor.orange, for: UIControl.State.normal)
// Set button's frame
button.frame.origin = CGPoint(x: 100, y: 100)
button.sizeToFit()
// Add action to button
button.addTarget(self, action: #selector(printZero(_:)), for: UIControl.Event.touchUpInside)
// Add button to subView
view.addSubview(button)
}
@objc func printZero(_ sender: UIButton) {
print("0")
}
}
let controller = ViewController()
PlaygroundPage.current.liveView = controller
use HTML instead of javascript
<html>_x000D_
<head><style> * { margin: 0; padding: 0; } </style></head>_x000D_
<body>_x000D_
<h1>svg foreignObject to embed html</h1>_x000D_
_x000D_
<svg_x000D_
xmlns="http://www.w3.org/2000/svg"_x000D_
viewBox="0 0 300 300"_x000D_
x="0" y="0" height="300" width="300"_x000D_
>_x000D_
_x000D_
<circle_x000D_
r="142" cx="150" cy="150"_x000D_
fill="none" stroke="#000000" stroke-width="2"_x000D_
/>_x000D_
_x000D_
<foreignObject_x000D_
x="50" y="50" width="200" height="200"_x000D_
>_x000D_
<div_x000D_
xmlns="http://www.w3.org/1999/xhtml"_x000D_
style="_x000D_
width: 196px; height: 196px;_x000D_
border: solid 2px #000000;_x000D_
font-size: 32px;_x000D_
overflow: auto; /* scroll */_x000D_
"_x000D_
>_x000D_
<p>this is html in svg 1</p>_x000D_
<p>this is html in svg 2</p>_x000D_
<p>this is html in svg 3</p>_x000D_
<p>this is html in svg 4</p>_x000D_
</div>_x000D_
</foreignObject>_x000D_
_x000D_
</svg>_x000D_
_x000D_
</body></html>
_x000D_
The route engine uses the same sequence as you add rules into it. Once it gets the first matched rule, it will stop checking other rules and take this to search for controller and action.
So, you should:
Put your specific rules ahead of your general rules(like default), which means use RouteTable.Routes.MapHttpRoute
to map "WithActionApi" first, then "DefaultApi".
Remove the defaults: new { id = System.Web.Http.RouteParameter.Optional }
parameter of your "WithActionApi" rule because once id is optional, url like "/api/{part1}/{part2}" will never goes into "DefaultApi".
Add an named action to your "DefaultApi" to tell the route engine which action to enter. Otherwise once you have more than one actions in your controller, the engine won't know which one to use and throws "Multiple actions were found that match the request: ...". Then to make it matches your Get method, use an ActionNameAttribute.
So your route should like this:
// Map this rule first
RouteTable.Routes.MapRoute(
"WithActionApi",
"api/{controller}/{action}/{id}"
);
RouteTable.Routes.MapRoute(
"DefaultApi",
"api/{controller}/{id}",
new { action="DefaultAction", id = System.Web.Http.RouteParameter.Optional }
);
And your controller:
[ActionName("DefaultAction")] //Map Action and you can name your method with any text
public string Get(int id)
{
return "object of id id";
}
[HttpGet]
public IEnumerable<string> ByCategoryId(int id)
{
return new string[] { "byCategory1", "byCategory2" };
}
This will give you a list of a single group, and the members of each group.
param
(
[Parameter(Mandatory=$true,position=0)]
[String]$GroupName
)
import-module activedirectory
# optional, add a wild card..
# $groups = $groups + "*"
$Groups = Get-ADGroup -filter {Name -like $GroupName} | Select-Object Name
ForEach ($Group in $Groups)
{write-host " "
write-host "$($group.name)"
write-host "----------------------------"
Get-ADGroupMember -identity $($groupname) -recursive | Select-Object samaccountname
}
write-host "Export Complete"
If you want the friendly name, or other details, add them to the end of the select-object query.
Have you tried binding the list to the datagridview directly? If not, try that first because it will save you lots of pain. If you have tried it already, please tell us what went wrong so we can better advise you. Data binding gives you different behaviour depending on what interfaces your data object implements. For example, if your data object only implements IEnumerable
(e.g. List
), you will get very basic one-way binding, but if it implements IBindingList
as well (e.g. BindingList
, DataView
), then you get two-way binding.
You could use the .attr()
function:
$(this).attr('data-fullText')
or if you lowercase the attribute name:
data-fulltext="This is a span element"
then you could use the .data()
function:
$(this).data('fulltext')
The .data()
function expects and works only with lowercase attribute names.
I am currently responsible for an Excel application with a lot of legacy code. One of the slowest pieces of this code was looping through 500 Rows in 6 Columns, setting conditional formatting formulae for each. The formulae are to identify where the cell contents are non-blank but do not form part of a Named Range, therefore referring twice to the cell itself, originally written as:
=AND(COUNTIF(<rangename>,<cellref>)=0,<cellref><>"")
Obviously the overheads would be much reduced by updating all Cells in each Column (Range) at once. However, as noted above, using ADDRESS(ROW(),COLUMN(),n) does not work in this circumstance, i.e. this does not work:
=AND(COUNTIF(<rangename>,ADDRESS(ROW(),COLUMN(),1))=0,ADDRESS(ROW(),COLUMN(),1)<>"")
I experimented extensively with a blank workbook and could find no way around this, using various alternatives such as ISBLANK. In the end, to get around this, I created two User-Defined Functions (using a tip I found elsewhere on this site):
Public Function returnCellContent() As Variant
returnCellContent = Application.Caller.Value
End Function
Public Function Cell_HasContent() As Boolean
If Application.Caller.Value = "" Then
Cell_HasContent = False
Else
Cell_HasContent = True
End If
End Function
The conditional formula is now:
=AND(COUNTIF(<rangename>,returnCellContent()=0,Cell_HasContent())
which works fine.
This has sped the code up, in Excel 2010, from 5s to 1s. Because this code is run whenever data is loaded into the application, this saving is significant and noticeable to the user. It's also a lot cleaner and reusable.
I've taken the time to post this because I could not find any answers on this site or elsewhere that cover all of the circumstances, whilst I'm sure that there are others who could benefit from the above approach, potentially with much larger numbers of cells to update.
Instead of extrapolating off the ends, you could return the extents of the y_list
. Most of the time your application is well behaved, and the Interpolate[x]
will be in the x_list
. The (presumably) linear affects of extrapolating off the ends may mislead you to believe that your data is well behaved.
Returning a non-linear result (bounded by the contents of x_list
and y_list
) your program's behavior may alert you to an issue for values greatly outside x_list
. (Linear behavior goes bananas when given non-linear inputs!)
Returning the extents of the y_list
for Interpolate[x]
outside of x_list
also means you know the range of your output value. If you extrapolate based on x
much, much less than x_list[0]
or x
much, much greater than x_list[-1]
, your return result could be outside of the range of values you expected.
def __getitem__(self, x):
if x <= self.x_list[0]:
return self.y_list[0]
elif x >= self.x_list[-1]:
return self.y_list[-1]
else:
i = bisect_left(self.x_list, x) - 1
return self.y_list[i] + self.slopes[i] * (x - self.x_list[i])
If you mean that you want to enable the submit after the user has typed at least one character, then you need to attach a key event that will check it for you.
Something like:
$("#fbss").keypress(function() {
if($(this).val().length > 1) {
// Enable submit button
} else {
// Disable submit button
}
});
This declaration:
char s[] = "hello";
Creates one object - a char
array of size 6, called s
, initialised with the values 'h', 'e', 'l', 'l', 'o', '\0'
. Where this array is allocated in memory, and how long it lives for, depends on where the declaration appears. If the declaration is within a function, it will live until the end of the block that it is declared in, and almost certainly be allocated on the stack; if it's outside a function, it will probably be stored within an "initialised data segment" that is loaded from the executable file into writeable memory when the program is run.
On the other hand, this declaration:
char *s ="hello";
Creates two objects:
char
s containing the values 'h', 'e', 'l', 'l', 'o', '\0'
, which has no name and has static storage duration (meaning that it lives for the entire life of the program); ands
, which is initialised with the location of the first character in that unnamed, read-only array.The unnamed read-only array is typically located in the "text" segment of the program, which means it is loaded from disk into read-only memory, along with the code itself. The location of the s
pointer variable in memory depends on where the declaration appears (just like in the first example).
Would it not be better to use java.util.Observable
and java.util.Observer
that will cause the table to update?
This problem arises when you have composer installed locally. To make it globally executable,run the below command in terminal
sudo mv composer.phar /usr/local/bin/composer
For CentOS 7 the command is
sudo mv composer.phar /usr/bin/composer
Here's how i am calling my modal
<a data-toggle="modal" data-id="190" data-target="#modal-popup">Open</a>
Here's how i am obtaining value in the modal
$('#modal-popup').on('show.bs.modal', function(e) {
console.log($(e.relatedTarget).data('id')); // 190 will be printed
});
Breadth First Search is generally the best approach when the depth of the tree can vary, and you only need to search part of the tree for a solution. For example, finding the shortest path from a starting value to a final value is a good place to use BFS.
Depth First Search is commonly used when you need to search the entire tree. It's easier to implement (using recursion) than BFS, and requires less state: While BFS requires you store the entire 'frontier', DFS only requires you store the list of parent nodes of the current element.
/***Your Code***/
public void paintComponent(Graphics g){
/***Your Code***/
g.setColor(Color.RED);
g.fillOval(50,50,20,20);
}
g.fillOval(x-axis,y-axis,width,height);
I had the same issue, and yes I had my jquery included first followed by the jquery validate script. I had no idea what was wrong. Turns out I was using a validate url that had moved. I figured this out by doing the following:
In my situation I had a 403 Forbidden error when trying to obtain (http://dev.jquery.com/view/trunk/plugins/validate/jquery.validate.js which is used in the example on http://rocketsquared.com/wiki/Plugins/Validation ).
Turns out the that link (http://dev.jquery.com/view/trunk/plugins/validate/jquery.validate.js) had moved to http://view.jquery.com/trunk/plugins/validate/jquery.validate.js (Firebug told me this when I loaded the file locally as opposed to on my web server).
NOTE: I tried using microsoft's CDN link also but it failed when I tried to load the javascript file in the browser with the correct url, there was some odd issue going on with the CDN site.
Use PowerShell:
$Server = "TestServer"
$Database = "TestDatabase"
$Query = "select * from TestTable"
$FilePath = "C:\OutputFile.csv"
# This will overwrite the file if it already exists.
Invoke-Sqlcmd -Query $Query -Database $Database -ServerInstance $Server | Export-Csv $FilePath
In my usual cases, all I really need is a CSV file that can be read by Excel. However, if you need an actual Excel file, then tack on some code to convert the CSV file to an Excel file. This answer gives a solution for this, but I've not tested it.
If your concern is just displaying linebreaks, you could do this with CSS.
<div style="white-space: pre-line">Some test
with linebreaks</div>
Jsfiddle: https://jsfiddle.net/5bvtL6do/2/
Note: Pay attention to code formatting and indenting, since white-space: pre-line
will display all newlines (except for the last newline after the text, see fiddle).
I had an experience with DataGrid. One of it's columns was "Select" button. When I was clicking "Select" button of any row I had received this error message:
"Invalid postback or callback argument. Event validation is enabled using in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation."
I changed several codes, and finally I succeeded. My experience route:
1) I changed page attribute to EnableEventValidation="false"
. But it didn't work. (not only is this dangerous
for security reason, my event handler wasn't called: void Grid_SelectedIndexChanged(object sender, EventArgs e)
2) I implemented ClientScript.RegisterForEventValidation
in Render method. But it didn't work.
protected override void Render(HtmlTextWriter writer)
{
foreach (DataGridItem item in this.Grid.Items)
{
Page.ClientScript.RegisterForEventValidation(item.UniqueID);
foreach (TableCell cell in (item as TableRow).Cells)
{
Page.ClientScript.RegisterForEventValidation(cell.UniqueID);
foreach (System.Web.UI.Control control in cell.Controls)
{
if (control is Button)
Page.ClientScript.RegisterForEventValidation(control.UniqueID);
}
}
}
}
3) I changed my button type in grid column from PushButton
to LinkButton
. It worked! ("ButtonType="LinkButton"). I think if you can change your button to other controls like "LinkButton" in other cases, it would work properly.
Short and Simple Solution
e.preventDefault();
var value = $('#id').val();
var id = $('#some_id').val();
url="{{url('office/service/requirement/rule_delete/')}}" +"/"+ id;
console.log(url);
$.ajaxSetup({
headers: {
'X-CSRF-TOKEN': $('meta[name="csrf-token"]').attr('content')
}
});
$.ajax({
/* the route pointing to the post function */
url: url,
type: 'DELETE',
/* send the csrf-token and the input to the controller */
data: {message:value},
dataType: 'JSON',
/* remind that 'data' is the response of the AjaxController */
success: function (data) {
console.log(data)
//$('.writeinfo').append(data.msg);
//$('#ruleRow'+id).remove();
}
});
return false;
for bootstrap4 vertical center of few items
d-flex for flex rules
flex-column for vertical direction on items
justify-content-center for centering
style='height: 300px;' must have for set points where center be calc or use h-100 class
<div class="d-flex flex-column justify-content-center bg-secondary" style="
height: 300px;
">
<div class="p-2 bg-primary">Flex item</div>
<div class="p-2 bg-primary">Flex item</div>
<div class="p-2 bg-primary">Flex item</div>
</div>
Here is a comparison with np.einsum
to show how the indices are projected
np.allclose(np.einsum('ijk,ijk->ijk', a,b), a*b) # True
np.allclose(np.einsum('ijk,ikl->ijl', a,b), a@b) # True
np.allclose(np.einsum('ijk,lkm->ijlm',a,b), a.dot(b)) # True
UPDATE Orders Order
SET Order.Quantity = Order.Quantity - 1
WHERE SomeCondition(Order)
As far as I know there is no build-in support for INSERT-OR-UPDATE in SQL. I suggest to create a stored procedure or use a conditional query to achiev this. Here you can find a collection of solutions for different databases.
Today 2020.01.07 I perform tests on MacOs HighSierra 10.13.6 on Chrome v78.0.0, Safari v13.0.4 and Firefox v71.0.0 for 15 chosen solutions. Conclusions
JSON
, Set
and surprisingly find
(K,N,O) are slowest on all browsersincludes
(F) is fast only on chromefor
(C,D) and indexOf
(G,H) are quite-fast on all browsers on small and big arrays so probably they are best choice for efficient solutionfor
(C,D,E) gives similar results (~630 ops/sec - but the E on safari and firefox was 10-20% slower than C and D)I perform 2 tests cases: for array with 10 elements, and array with 1 milion elements. In both cases we put searched element in the array middle.
let log = (name,f) => console.log(`${name}: 3-${f(arr,'s10')} 's7'-${f(arr,'s7')} 6-${f(arr,6)} 's3'-${f(arr,'s3')}`)_x000D_
_x000D_
let arr = [1,2,3,4,5,'s6','s7','s8','s9','s10'];_x000D_
//arr = new Array(1000000).fill(123); arr[500000]=7;_x000D_
_x000D_
function A(a, val) {_x000D_
var i = -1;_x000D_
var n = a.length;_x000D_
while (i++<n) {_x000D_
if (a[i] === val) {_x000D_
return true;_x000D_
}_x000D_
}_x000D_
return false;_x000D_
}_x000D_
_x000D_
function B(a, val) {_x000D_
var i = a.length;_x000D_
while (i--) {_x000D_
if (a[i] === val) {_x000D_
return true;_x000D_
}_x000D_
}_x000D_
return false;_x000D_
}_x000D_
_x000D_
function C(a, val) {_x000D_
for (var i = 0; i < a.length; i++) {_x000D_
if (a[i] === val) return true;_x000D_
}_x000D_
return false;_x000D_
}_x000D_
_x000D_
function D(a,val)_x000D_
{_x000D_
var len = a.length;_x000D_
for(var i = 0 ; i < len;i++)_x000D_
{_x000D_
if(a[i] === val) return true;_x000D_
}_x000D_
return false;_x000D_
} _x000D_
_x000D_
function E(a, val){ _x000D_
var n = a.length-1;_x000D_
var t = n/2;_x000D_
for (var i = 0; i <= t; i++) {_x000D_
if (a[i] === val || a[n-i] === val) return true;_x000D_
}_x000D_
return false;_x000D_
}_x000D_
_x000D_
function F(a,val) {_x000D_
return a.includes(val);_x000D_
}_x000D_
_x000D_
function G(a,val) {_x000D_
return a.indexOf(val)>=0;_x000D_
}_x000D_
_x000D_
function H(a,val) {_x000D_
return !!~a.indexOf(val);_x000D_
}_x000D_
_x000D_
function I(a, val) {_x000D_
return a.findIndex(x=> x==val)>=0;_x000D_
}_x000D_
_x000D_
function J(a,val) {_x000D_
return a.some(x=> x===val);_x000D_
}_x000D_
_x000D_
function K(a, val) {_x000D_
const s = JSON.stringify(val);_x000D_
return a.some(x => JSON.stringify(x) === s);_x000D_
}_x000D_
_x000D_
function L(a,val) {_x000D_
return !a.every(x=> x!==val);_x000D_
}_x000D_
_x000D_
function M(a, val) {_x000D_
return !!a.find(x=> x==val);_x000D_
}_x000D_
_x000D_
function N(a,val) {_x000D_
return a.filter(x=>x===val).length > 0;_x000D_
}_x000D_
_x000D_
function O(a, val) {_x000D_
return new Set(a).has(val);_x000D_
}_x000D_
_x000D_
log('A',A);_x000D_
log('B',B);_x000D_
log('C',C);_x000D_
log('D',D);_x000D_
log('E',E);_x000D_
log('F',F);_x000D_
log('G',G);_x000D_
log('H',H);_x000D_
log('I',I);_x000D_
log('J',J);_x000D_
log('K',K);_x000D_
log('L',L);_x000D_
log('M',M);_x000D_
log('N',N);_x000D_
log('O',O);
_x000D_
This shippet only presents functions used in performance tests - it not perform tests itself!
_x000D_
Array small - 10 elements
You can perform tests in your machine HERE
Array big - 1.000.000 elements
You can perform tests in your machine HERE
2 things.
The query has to complete on sql server before the return value is sent.
The results have to be captured and then finish executing before the return value gets to the object.
In English, finish the work and then retrieve the value.
this will not work:
cmm.ExecuteReader();
int i = (int) cmm.Parameters["@RETURN_VALUE"].Value;
This will work:
SqlDataReader reader = cmm.ExecuteReader();
reader.Close();
foreach (SqlParameter prm in cmd.Parameters)
{
Debug.WriteLine("");
Debug.WriteLine("Name " + prm.ParameterName);
Debug.WriteLine("Type " + prm.SqlDbType.ToString());
Debug.WriteLine("Size " + prm.Size.ToString());
Debug.WriteLine("Direction " + prm.Direction.ToString());
Debug.WriteLine("Value " + prm.Value);
}
if you are not sure check the value of the parameter before during and after the results have been processed by the reader.
You can use the following.
@using (Html.BeginForm("MyAction", "MyController", new { area = "MyArea" }, FormMethod.Post, new { @class = "" }))
{
<div class="col-md-6">
<div class="col-lg-3 col-md-3 col-sm-3 col-xs-12">
@Html.LabelFor(m => m.MyData, new { @class = "col-form-label" })
</div>
<div class="col-lg-9 col-md-9 col-sm-9 col-xs-12">
@Html.TextBoxFor(m => m.MyData, new { @class = "form-control" })
</div>
</div>
<div class="col-md-6">
<div class="">
<button class="btn btn-primary" type="submit">Send</button>
<button class="btn btn-danger" type="reset"> Clear</button>
</div>
</div>
}
Then clear the form:
$('.btn:reset').click(function (ev) {
ev.preventDefault();
$(this).closest('form').find("input").each(function(i, v) {
$(this).val("");
});
});
use isinstance(v, type_name)
or type(v) is type_name
or type(v) == type_name
,
where type_name can be one of the following:
and, of course,
I'm not sure about you, but I spent about 30 minutes troubleshooting the same issue here, until I realized that the line for app/build.gradle is:
apply plugin: 'com.google.gms.google-services'
and not:
apply plugin: 'com.google.gms:google-services'
Eg: I had copied that line from a tutorial, but when specifying the apply plugin namespace, no colon (:
) is required. It's, in fact, a dot. (.
).
Hey... it's easy to miss.
Is there anything wrong with Nahuel Greco's solution aside from the compilation error?
If I change one line
// Compilation error
setsockopt(fd, SO_SNDTIMEO, &timeout, sizeof(timeout));
to
// Fixed?
setsockopt(fd, SOL_SOCKET, SO_SNDTIMEO, &timeout, sizeof(timeout));
then it seems to work as advertised - socket()
returns a timeout error.
Resulting code:
struct timeval timeout;
timeout.tv_sec = 7; // after 7 seconds connect() will timeout
timeout.tv_usec = 0;
setsockopt(fd, SOL_SOCKET, SO_SNDTIMEO, &timeout, sizeof(timeout));
connect(...)
I'm not versed enough to know the tradeoffs are between a send timeout and a non-blocking socket, but I'm curious to learn.
With this command:
dpkg -s mysql-server | grep Status
unsorted_list.sort(key=lambda x: x[3])
You can use tableToExcel.js to export table in excel file.
This works in a following way :
1). Include this CDN in your project/file
<script src="https://cdn.jsdelivr.net/gh/linways/[email protected]/dist/tableToExcel.js"></script>
2). Either Using JavaScript:
<button id="btnExport" onclick="exportReportToExcel(this)">EXPORT REPORT</button>
function exportReportToExcel() {
let table = document.getElementsByTagName("table"); // you can use document.getElementById('tableId') as well by providing id to the table tag
TableToExcel.convert(table[0], { // html code may contain multiple tables so here we are refering to 1st table tag
name: `export.xlsx`, // fileName you could use any name
sheet: {
name: 'Sheet 1' // sheetName
}
});
}
3). Or by Using Jquery
<button id="btnExport">EXPORT REPORT</button>
$(document).ready(function(){
$("#btnExport").click(function() {
let table = document.getElementsByTagName("table");
TableToExcel.convert(table[0], { // html code may contain multiple tables so here we are refering to 1st table tag
name: `export.xlsx`, // fileName you could use any name
sheet: {
name: 'Sheet 1' // sheetName
}
});
});
});
You may refer to this github link for any other information
https://github.com/linways/table-to-excel/tree/master
or for referring the live example visit the following link
https://codepen.io/rohithb/pen/YdjVbb
Hope this will help someone :-)
I ran into this same issue, and I have come up with four total viable solutions:
display: flex;
(this is my favorite solution)overflow: auto;
or overflow: hidden;
to the container.c:after {
clear: both;
content: "";
display: block;
}
<div style="clear: both;"></div>
It sounds like the Link table captures the many:many relationship between the Object table and Data table.
My suggestion is to use a stored procedure to manage the transactions. When you want to insert to the Object or Data table perform your inserts, get the new IDs and insert them to the Link table.
This allows all of your logic to remain encapsulated in one easy to call sproc.
If you just want to check if certain characters are actually in the string or not, use strtok:
$string = 'abcdefg';
if (strtok($string, 'acd') === $string) {
// not found
} else {
// found
}
A very good solution to this can be found here:
Here's a class that serves as a wrapper to a pyserial object. It allows you to read lines without 100% CPU. It does not contain any timeout logic. If a timeout occurs,
self.s.read(i)
returns an empty string and you might want to throw an exception to indicate the timeout.
It is also supposed to be fast according to the author:
The code below gives me 790 kB/sec while replacing the code with pyserial's readline method gives me just 170kB/sec.
class ReadLine:
def __init__(self, s):
self.buf = bytearray()
self.s = s
def readline(self):
i = self.buf.find(b"\n")
if i >= 0:
r = self.buf[:i+1]
self.buf = self.buf[i+1:]
return r
while True:
i = max(1, min(2048, self.s.in_waiting))
data = self.s.read(i)
i = data.find(b"\n")
if i >= 0:
r = self.buf + data[:i+1]
self.buf[0:] = data[i+1:]
return r
else:
self.buf.extend(data)
ser = serial.Serial('COM7', 9600)
rl = ReadLine(ser)
while True:
print(rl.readline())
You are probably looking for System.Guid.NewGuid()
.
This article (Why is window.showModalDialog deprecated? What to use instead?) seems to suggest that showModalDialog has been deprecated.
The order of execution of ng-click
and ng-model
is ambiguous since they do not define clear priorities. Instead you should use ng-change
or a $watch
on the $scope
to ensure that you obtain the correct values of the model variable.
In your case, this should work:
<input type="checkbox" ng-model="vm.myChkModel" ng-change="vm.myClick(vm.myChkModel)">
In addition to @Marek's comment about not including fixed==TRUE
, you also need to not have the spaces in your regular expression. It should be "A1|A9|A6"
.
You also mention that there are lots of patterns. Assuming that they are in a vector
toMatch <- c("A1", "A9", "A6")
Then you can create your regular expression directly using paste
and collapse = "|"
.
matches <- unique (grep(paste(toMatch,collapse="|"),
myfile$Letter, value=TRUE))
visibility:hidden is the proper syntax, but another way to 'hide' the table is with display:none or dynamically with JQuery:
$('#myTable').hide()
If you are trying to allocate space for an array of pointers, such as
char** my_array_of_strings; // or some array of pointers such as int** or even void**
then you will need to consider word size (8 bytes in a 64-bit system, 4 bytes in a 32-bit system) when allocating space for n pointers. The size of a pointer is the same of your word size.
So while you may wish to allocate space for n pointers, you are actually going to need n times 8 or 4 (for 64-bit or 32-bit systems, respectively)
To avoid overflowing your allocated memory for n elements of 8 bytes:
my_array_of_strings = (char**) malloc( n * 8 ); // for 64-bit systems
my_array_of_strings = (char**) malloc( n * 4 ); // for 32-bit systems
This will return a block of n pointers, each consisting of 8 bytes (or 4 bytes if you're using a 32-bit system)
I have noticed that Linux will allow you to use all n pointers when you haven't compensated for word size, but when you try to free that memory it realizes its mistake and it gives out that rather nasty error. And it is a bad one, when you overflow allocated memory, many security issues lie in wait.
Query to achieve your requirment
SELECT id,GROUP_CONCAT(text SEPARATOR ' ') AS text FROM table_name group by id;
Have you considered using the "xcopy" command?
The xcopy command will do all that for you.