I got the following error:

org.hibernate.HibernateException: No Hibernate Session bound to thread, and configuration does not allow creation of non-transactional one here
    at org.springframework.orm.hibernate3.SpringSessionContext.currentSession(SpringSessionContext.java:63)

I fixed this by changing my hibernate properties file

hibernate.current_session_context_class=thread

My code and configuration file as follows

session =  getHibernateTemplate().getSessionFactory().getCurrentSession();

session.beginTransaction();

session.createQuery(Qry).executeUpdate();

session.getTransaction().commit();

on properties file

hibernate.dialect=org.hibernate.dialect.MySQLDialect

hibernate.show_sql=true

hibernate.query_factory_class=org.hibernate.hql.ast.ASTQueryTranslatorFactory

hibernate.current_session_context_class=thread

on cofiguration file

<properties>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">${hibernate.dialect}</prop>
<prop key="hibernate.show_sql">${hibernate.show_sql}</prop>         
<prop key="hibernate.query.factory_class">${hibernate.query_factory_class}</prop>       
<prop key="hibernate.generate_statistics">true</prop>
<prop key="hibernate.current_session_context_class">${hibernate.current_session_context_class}</prop>
</props>
</property>
</properties>

Thanks,
Ashok

In some cases, instead of relying on downward API, programmatically reading the local IP address (from network interfaces) from inside of the container also works.

For example, in golang: https://stackoverflow.com/a/31551220/6247478

I am the author of the source code at the specified link. While the intention of the source code license is not clear (it will be later today), the code is in fact open and free for use in your free or commercial applications with no strings attached.

$env:USERPROFILE = "C:\\Documents and Settings\\[USER]\\"

Here is the clear working example:

//creating new array
var custom_arr1 = [];


//storing value in array
custom_arr1.push("test");
custom_arr1.push("test1");

alert(custom_arr1);
//output will be  test,test1

I am surprised that the connection string works for you, because it is missing a semi-colon. Set is only used with objects, so you would not say Set strNaam.

Set cn = CreateObject("ADODB.Connection")
With cn
 .Provider = "Microsoft.Jet.OLEDB.4.0"
  .ConnectionString = "Data Source=D:\test.xls " & _
  ";Extended Properties=""Excel 8.0;HDR=Yes;"""
.Open
End With
strQuery = "SELECT * FROM [Sheet1$E36:E38]"
Set rs = cn.Execute(strQuery)
Do While Not rs.EOF
  For i = 0 To rs.Fields.Count - 1
    Debug.Print rs.Fields(i).Name, rs.Fields(i).Value
    strNaam = rs.Fields(0).Value
  Next
  rs.MoveNext
Loop
rs.Close

There are other ways, depending on what you want to do, such as GetString (GetString Method Description).

You can run it through Number()

var myInt = Number(new Date(dates_as_int[0]));

If the parameter is a Date object, the Number() function returns the number of milliseconds since midnight January 1, 1970 UTC.

Use of Number()

Yes it's possible to change it to gray (no custom colors) but this only works from API 23 and above you only need to add this in your values-v23/styles.xml

<item name="android:windowLightStatusBar">true</item>

For the beginner I would like to explain a bit more with an example:

Example:

value is 0x55;
bitnum : 3rd.

The & operator is used check the bit:

0101 0101
&
0000 1000
___________
0000 0000 (mean 0: False). It will work fine if the third bit is 1 (then the answer will be True)

Toggle or Flip:

0101 0101
^
0000 1000
___________
0101 1101 (Flip the third bit without affecting other bits)

| operator: set the bit

0101 0101
|
0000 1000
___________
0101 1101 (set the third bit without affecting other bits)

Unfortunately for MSForms list box looping through the list items and checking their Selected property is the only way. However, here is an alternative. I am storing/removing the selected item in a variable, you can do this in some remote cell and keep track of it :)

Dim StrSelection As String

Private Sub ListBox1_Change()
    If ListBox1.Selected(ListBox1.ListIndex) Then
        If StrSelection = "" Then
            StrSelection = ListBox1.List(ListBox1.ListIndex)
        Else
            StrSelection = StrSelection & "," & ListBox1.List(ListBox1.ListIndex)
        End If
    Else
        StrSelection = Replace(StrSelection, "," & ListBox1.List(ListBox1.ListIndex), "")
    End If
End Sub

I am also facing the same issue and got the resolution after a day :

The exception is coming because System needs Geckodriver to run the Selenium test case. You can try this code under the main Method in Java

    System.setProperty("webdriver.gecko.driver","path of/geckodriver.exe");
    DesiredCapabilities capabilities=DesiredCapabilities.firefox();
    capabilities.setCapability("marionette", true);
    WebDriver driver = new FirefoxDriver(capabilities);

For more information You can go to this https://developer.mozilla.org/en-US/docs/Mozilla/QA/Marionette/WebDriver link.

Please let me know if the issue doesn't get resolved.

DOUBLE columns are not the same as DECIMAL columns, and you will get in trouble if you use DOUBLE columns for financial data.

DOUBLE is actually just a double precision (64 bit instead of 32 bit) version of FLOAT. Floating point numbers are approximate representations of real numbers and they are not exact. In fact, simple numbers like 0.01 do not have an exact representation in FLOAT or DOUBLE types.

DECIMAL columns are exact representations, but they take up a lot more space for a much smaller range of possible numbers. To create a column capable of holding values from 0.0001 to 99.9999 like you asked you would need the following statement

CREATE TABLE your_table
(
    your_column DECIMAL(6,4) NOT NULL
);

The column definition follows the format DECIMAL(M, D) where M is the maximum number of digits (the precision) and D is the number of digits to the right of the decimal point (the scale).

This means that the previous command creates a column that accepts values from -99.9999 to 99.9999. You may also create an UNSIGNED DECIMAL column, ranging from 0.0000 to 99.9999.

For more information on MySQL DECIMAL the official docs are always a great resource.

Bear in mind that all of this information is true for versions of MySQL 5.0.3 and greater. If you are using previous versions, you really should upgrade.

You can use the following function to convert the text "HTML" to the element

function htmlToElement(html)_x000D_
{_x000D_
  var element = document.createElement('div');_x000D_
  element.innerHTML = html;_x000D_
  return(element);_x000D_
}_x000D_
var html="<li>text and html</li>";_x000D_
var e=htmlToElement(html);

Azure Data Studio with Postgres addin is the tool of choice to manage postgres databases for me. Check it out. https://docs.microsoft.com/en-us/sql/azure-data-studio/quickstart-postgres?view=sql-server-ver15

This matches everything up to ".txt" (without including it):

^.*(?=(\.txt))

Probably the shortest solution:

def printLog(*args, **kwargs):
    print(*args, **kwargs)
    with open('output.out','a') as file:
        print(*args, **kwargs, file=file)

printLog('hello world')

Writes 'hello world' to sys.stdout and to output.out and works exactly the same way as print().

Note: Please do not specify the file argument for the printLog function. Calls like printLog('test',file='output2.out') are not supported.

None of these answers seemed simple enough - the crux of the problem is not having to rebuild:

makefile

OBJDIR=out
VPATH=$(OBJDIR)

# make will look in VPATH to see if the target needs to be rebuilt
test: moo
    touch $(OBJDIR)/$@

example use

touch moo
# creates out/test
make test
# doesn't update out/test
make test
# will now update test
touch moo
make test

Testing time is probably more closely correlated to feature scope than development time. I'd also argue (perhaps controversially) that testing time is correlated to the skill of your development team.

For a 6-to-9 month development effort, I demand a absolute minimum of 2 weeks testing time, performed by actual testers (not the development team) who are well-versed in the software they will be testing (i.e., 2 weeks does not include ramp-up time). This is for a project that has ~5 developers.

I agree with Aamir that the submission arrow.m from Erik Johnson on the MathWorks File Exchange is a very nice option. You can use it to illustrate the different methods of vector addition like so:

• Tip-to-tail method:

  o = [0 0 0];  %# Origin
  a = [2 3 5];  %# Vector 1
  b = [1 1 0];  %# Vector 2
  c = a+b;      %# Resultant
  arrowStarts = [o; a; o];        %# Starting points for arrows
  arrowEnds = [a; c; c];          %# Ending points for arrows
  arrow(arrowStarts,arrowEnds);   %# Plot arrows
  

• Parallelogram method:

  o = [0 0 0];  %# Origin
  a = [2 3 5];  %# Vector 1
  b = [1 1 0];  %# Vector 2
  c = a+b;      %# Resultant
  arrowStarts = [o; o; o];        %# Starting points for arrows
  arrowEnds = [a; b; c];          %# Ending points for arrows
  arrow(arrowStarts,arrowEnds);   %# Plot arrows
  hold on;
  lineX = [a(1) b(1); c(1) c(1)];  %# X data for lines
  lineY = [a(2) b(2); c(2) c(2)];  %# Y data for lines
  lineZ = [a(3) b(3); c(3) c(3)];  %# Z data for lines
  line(lineX,lineY,lineZ,'Color','k','LineStyle',':');  %# Plot lines
  

The solution (http://expressjs.com/en/starter/static-files.html).

once done this the image folder no longer shalt put it. only be

background-image: url ( "/ image.png");

carpera that the image is already in the static files

Your vm does not find the class org/apache/juli/logging/LogFactory check if this class is present in the tomcat-juli.jar that you use (unzip it and search the file), if it's not present download the library from apache web site else if it's present put the tomcat-juli.jar in a path (the lib directory) that Tomcat use to load classes. If your Tomcat does not find it you can copy the jar in the lib directory of the JRE that you are using.

I usually go with PNG, as it seems to have a few advantages over GIF. There used to be patent restrictions on GIF, but those have expired.

GIFs are suitable for sharp-edged line art (such as logos) with a limited number of colors. This takes advantage of the format's lossless compression, which favors flat areas of uniform color with well defined edges (in contrast to JPEG, which favors smooth gradients and softer images).

GIFs can be used for small animations and low-resolution film clips.

In view of the general limitation on the GIF image palette to 256 colors, it is not usually used as a format for digital photography. Digital photographers use image file formats capable of reproducing a greater range of colors, such as TIFF, RAW or the lossy JPEG, which is more suitable for compressing photographs.

The PNG format is a popular alternative to GIF images since it uses better compression techniques and does not have a limit of 256 colors, but PNGs do not support animations. The MNG and APNG formats, both derived from PNG, support animations, but are not widely used.

We can create a for loop and pass all the numeric columns into it. The loop will plot the graphs one by one in separate pane as we are including plt.figure() into it.

import pandas as pd
import seaborn as sns
import numpy as np

numeric_features=[x for x in data.columns if data[x].dtype!="object"]
#taking only the numeric columns from the dataframe.

for i in data[numeric_features].columns:
    plt.figure(figsize=(12,5))
    plt.title(i)
    sns.boxplot(data=data[i])

If you have vectors destined to become rows, concatenate them using c(), pass them to a matrix row-by-row, and convert that matrix to a dataframe.

For example, rows

dummydata1=c(2002,10,1,12.00,101,426340.0,4411238.0,3598.0,0.92,57.77,4.80,238.29,-9.9)
dummydata2=c(2002,10,2,12.00,101,426340.0,4411238.0,3598.0,-3.02,78.77,-9999.00,-99.0,-9.9)
dummydata3=c(2002,10,8,12.00,101,426340.0,4411238.0,3598.0,-5.02,88.77,-9999.00,-99.0,-9.9)

can be converted to a data frame thus:

dummyset=c(dummydata1,dummydata2,dummydata3)
col.len=length(dummydata1)
dummytable=data.frame(matrix(data=dummyset,ncol=col.len,byrow=TRUE))

Admittedly, I see 2 major limitations: (1) this only works with single-mode data, and (2) you must know your final # columns for this to work (i.e., I'm assuming that you're not working with a ragged array whose greatest row length is unknown a priori).

This solution seems simple, but from my experience with type conversions in R, I'm sure it creates new challenges down-the-line. Can anyone comment on this?

You have to add the order direction right after the column name:

$qb->orderBy('column1 ASC, column2 DESC');

As you have noted, multiple calls to orderBy do not stack, but you can make multiple calls to addOrderBy:

$qb->addOrderBy('column1', 'ASC')
   ->addOrderBy('column2', 'DESC');

It seems Yahoo server does some heuristic based on User-Agent in a case Accept header is set to */*.

Accept: text/html

did the trick for me.

e.g.

wget  --header="Accept: text/html" --user-agent="Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:21.0) Gecko/20100101 Firefox/21.0"  http://yahoo.com

Note: if you don't declare Accept header then wget automatically adds Accept:*/* which means give me anything you have.

SQL Wildcards are enough for this purpose. Follow this link: http://www.w3schools.com/SQL/sql_wildcards.asp

you need to use a query like this:

select * from mytable where msisdn like '%7%'

or

select * from mytable where msisdn like '56655%'

The easiest and most precise way to get the context of the fragment that I found is to get it directly from the ViewGroup when you call onCreateView method at least here you are sure not to get null for getActivity():

public class Animal extends Fragment { 
  Context thiscontext;
  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
  {
    thiscontext = container.getContext();

As myJSON is an object you can just set its properties, for example:

myJSON.list1 = ["1","2"];

If you dont know the name of the properties, you have to use the array access syntax:

myJSON['list'+listnum] = ["1","2"];

If you want to add an element to one of the properties, you can do;

myJSON.list1.push("3");

1. Entities are managed by javax.persistence.EntityManager instance using persistence context.
2. Each EntityManager instance is associated with a persistence context.
3. Within the persistence context, the entity instances and their lifecycle are managed.
4. Persistence context defines a scope under which particular entity instances are created, persisted, and removed.
5. A persistence context is like a cache which contains a set of persistent entities , So once the transaction is finished, all persistent objects are detached from the EntityManager's persistence context and are no longer managed.

In your model,

class Contact
  self.email_providers = %w[Gmail Yahoo MSN]
  validates :email_provider, :inclusion => email_providers
end

In your form,

<%= f.select :email_provider, 
    options_for_select(Contact.email_providers, @contact.email_provider) %>

the second arg of the options_for_select will have any current email_provider selected.

The other answers explain how to produce a string formatted like in your example, but if all you need to do is to print that stuff you could simply write:

first = 10
second = 20
print "First number is", first, "and second number is", second

Since typeof is a compiler extension, there is not really a definition for it, but in the tradition of C it would be an operator, e.g sizeof and _Alignof are also seen as an operators.

And you are mistaken, C has dynamic types that are only determined at run time: variable modified (VM) types.

size_t n = strtoull(argv[1], 0, 0);
double A[n][n];
typeof(A) B;

can only be determined at run time.

Just convert it to a date using NSDateFormatter and the "h:mm a" format and convert it back to a string using the "HH:mm" format. Check out this date formatting guide to familiarize yourself with this material.

let dateAsString = "6:35 PM"
let dateFormatter = NSDateFormatter()
dateFormatter.dateFormat = "h:mm a"
let date = dateFormatter.dateFromString(dateAsString)

dateFormatter.dateFormat = "HH:mm"
let date24 = dateFormatter.stringFromDate(date!)

Alter table Hotels 
Add  
{ 
 HasPhotoInReadyStorage  bit, 
 HasPhotoInWorkStorage  bit, 
 HasPhotoInMaterialStorage bit, 
 HasHotelPhotoInReadyStorage  bit, 
 HasHotelPhotoInWorkStorage  bit, 
 HasHotelPhotoInMaterialStorage bit, 
 HasReporterData  bit, 
 HasMovieInReadyStorage  bit, 
 HasMovieInWorkStorage  bit, 
 HasMovieInMaterialStorage bit 
}; 

Above you are using {, }.

Also, you are missing commas:

ALTER TABLE Regions 
ADD ( HasPhotoInReadyStorage  bit, 
 HasPhotoInWorkStorage  bit, 
 HasPhotoInMaterialStorage bit <**** comma needed here
 HasText  bit); 

You need to remove the brackets and make sure all columns have a comma where necessary.

Shallow-cloning (excluding prototype) or merging of objects is now possible using a shorter syntax than Object.assign().

Spread syntax for object literals was introduced in ECMAScript 2018):

const a = { "one": 1, "two": 2 };
const b = { "three": 3 };
const c = { "four": 4, "five": 5 };

const result = {...a, ...b, ...c};
// Object { "one": 1, "two": 2 , "three": 3, "four": 4, "five": 5 }

Spread (...) operator is supported in many modern browsers but not all of them.

So, it is recommend to use a transpiler like Babel to convert ECMAScript 2015+ code into a backwards compatible version of JavaScript in current and older browsers or environments.

This is the equivalent code Babel will generate for you:

"use strict";

var _extends = Object.assign || function(target) {
  for (var i = 1; i < arguments.length; i++) {
    var source = arguments[i];
    for (var key in source) {
      if (Object.prototype.hasOwnProperty.call(source, key)) {
        target[key] = source[key];
      }
    }
  }
  return target;
};

var a = { "one": 1, "two": 2 };
var b = { "three": 3 };
var c = { "four": 4, "five": 5 };

var result = _extends({}, a, b, c);
// Object { "one": 1, "two": 2 , "three": 3, "four": 4, "five": 5 }

The ideal solution for this problem works with iterators (not just sequences). It should also be fast.

This is the solution provided by the documentation for itertools:

def grouper(n, iterable, fillvalue=None):
    #"grouper(3, 'ABCDEFG', 'x') --> ABC DEF Gxx"
    args = [iter(iterable)] * n
    return itertools.izip_longest(fillvalue=fillvalue, *args)

Using ipython's %timeit on my mac book air, I get 47.5 us per loop.

However, this really doesn't work for me since the results are padded to be even sized groups. A solution without the padding is slightly more complicated. The most naive solution might be:

def grouper(size, iterable):
    i = iter(iterable)
    while True:
        out = []
        try:
            for _ in range(size):
                out.append(i.next())
        except StopIteration:
            yield out
            break

        yield out

Simple, but pretty slow: 693 us per loop

The best solution I could come up with uses islice for the inner loop:

def grouper(size, iterable):
    it = iter(iterable)
    while True:
        group = tuple(itertools.islice(it, None, size))
        if not group:
            break
        yield group

With the same dataset, I get 305 us per loop.

Unable to get a pure solution any faster than that, I provide the following solution with an important caveat: If your input data has instances of filldata in it, you could get wrong answer.

def grouper(n, iterable, fillvalue=None):
    #"grouper(3, 'ABCDEFG', 'x') --> ABC DEF Gxx"
    args = [iter(iterable)] * n
    for i in itertools.izip_longest(fillvalue=fillvalue, *args):
        if tuple(i)[-1] == fillvalue:
            yield tuple(v for v in i if v != fillvalue)
        else:
            yield i

I really don't like this answer, but it is significantly faster. 124 us per loop

To me, the antipathy towards var illustrates why bilingualism in .NET is important. To those C# programmers who have also done VB .NET, the advantages of var are intuitively obvious. The standard C# declaration of:

List<string> whatever = new List<string>();

is the equivalent, in VB .NET, of typing this:

Dim whatever As List(Of String) = New List(Of String)

Nobody does that in VB .NET, though. It would be silly to, because since the first version of .NET you've been able to do this...

Dim whatever As New List(Of String)

...which creates the variable and initializes it all in one reasonably compact line. Ah, but what if you want an IList<string>, not a List<string>? Well, in VB .NET that means you have to do this:

Dim whatever As IList(Of String) = New List(Of String)

Just like you'd have to do in C#, and obviously couldn't use var for:

IList<string> whatever = new List<string>();

If you need the type to be something different, it can be. But one of the basic principles of good programming is reducing redundancy, and that's exactly what var does.

Node is used to represent tags in general. Divided to 3 types:

Attribute Note: is node which inside its has attributes. Exp: <p id=”123”></p>

Text Node: is node which between the opening and closing its have contian text content. Exp: <p>Hello</p>

Element Node : is node which inside its has other tags. Exp: <p><b></b></p>

Each node may be types simultaneously, not necessarily only of a single type.

Element is simply a element node.

The accepted answer lead me to believe that decoupling Django backend and React Frontend is the right way to go no matter what. In fact there are approaches in which React and Django are coupled, which may be better suited in particular situations.

This tutorial well explains this. In particular:

I see the following patterns (which are common to almost every web framework):

-React in its own “frontend” Django app: load a single HTML template and let React manage the frontend (difficulty: medium)

-Django REST as a standalone API + React as a standalone SPA (difficulty: hard, it involves JWT for authentication)

-Mix and match: mini React apps inside Django templates (difficulty: simple)

One way you can perform this operation for all the values 1 through 7 at once is to use the function ACCUMARRAY:

>> M = randi(7,1500,1);  %# Some random sample data with the values 1 through 7
>> dayCounts = accumarray(M,1)  %# Will return a 7-by-1 vector

dayCounts =

   218       %# Number of Sundays
   200       %# Number of Mondays
   213       %# Number of Tuesdays
   220       %# Number of Wednesdays
   234       %# Number of Thursdays
   219       %# Number of Fridays
   196       %# Number of Saturdays

I think this will do:

Dim filename As String
filename = Application.GetOpenFilename

Just for the most popular linux Ubuntu & it's bash:

1. Check which shell are you using? Mostly below works, else see this:

   echo $0

2. If above prints bash, then below will work:

   printf "hello with no new line printed at end"
   OR
   echo -n "hello with no new line printed at end"

If you were to inspect the event.target with firebug or chrome's developer tools you would see for a span element (e.g. the following properties) it will have whatever properties any element has. It depends what the target element is:

event.target: HTMLSpanElement

attributes: NamedNodeMap
baseURI: "file:///C:/Test.html"
childElementCount: 0
childNodes: NodeList[1]
children: HTMLCollection[0]
classList: DOMTokenList
className: ""
clientHeight: 36
clientLeft: 1
clientTop: 1
clientWidth: 1443
contentEditable: "inherit"
dataset: DOMStringMap
dir: ""
draggable: false
firstChild: Text
firstElementChild: null
hidden: false
id: ""
innerHTML: "click"
innerText: "click"
isContentEditable: false
lang: ""
lastChild: Text
lastElementChild: null
localName: "span"
namespaceURI: "http://www.w3.org/1999/xhtml"
nextElementSibling: null
nextSibling: null
nodeName: "SPAN"
nodeType: 1
nodeValue: null
offsetHeight: 38
offsetLeft: 26
offsetParent: HTMLBodyElement
offsetTop: 62
offsetWidth: 1445
onabort: null
onbeforecopy: null
onbeforecut: null
onbeforepaste: null
onblur: null
onchange: null
onclick: null
oncontextmenu: null
oncopy: null
oncut: null
ondblclick: null
ondrag: null
ondragend: null
ondragenter: null
ondragleave: null
ondragover: null
ondragstart: null
ondrop: null
onerror: null
onfocus: null
oninput: null
oninvalid: null
onkeydown: null
onkeypress: null
onkeyup: null
onload: null
onmousedown: null
onmousemove: null
onmouseout: null
onmouseover: null
onmouseup: null
onmousewheel: null
onpaste: null
onreset: null
onscroll: null
onsearch: null
onselect: null
onselectstart: null
onsubmit: null
onwebkitfullscreenchange: null
outerHTML: "<span>click</span>"
outerText: "click"
ownerDocument: HTMLDocument
parentElement: HTMLElement
parentNode: HTMLElement
prefix: null
previousElementSibling: null
previousSibling: null
scrollHeight: 36
scrollLeft: 0
scrollTop: 0
scrollWidth: 1443
spellcheck: true
style: CSSStyleDeclaration
tabIndex: -1
tagName: "SPAN"
textContent: "click"
title: ""
webkitdropzone: ""
__proto__: HTMLSpanElement

In general error is which nobody can control or guess when it occurs.Exception can be guessed and can be handled. In Java Exception and Error are sub class of Throwable.It is differentiated based on the program control.Error such as OutOfMemory Error which no programmer can guess and can handle it.It depends on dynamically based on architectire,OS and server configuration.Where as Exception programmer can handle it and can avoid application's misbehavior.For example if your code is looking for a file which is not available then IOException is thrown.Such instances programmer can guess and can handle it.

This also works:

SELECT
  pieces.*
FROM
  pieces inner join (select min(price) as minprice from pieces) mn
  on pieces.price = mn.minprice

(since this version doesn't have a where condition with a subquery, it could be used if you need to UPDATE the table, but if you just need to SELECT i would reccommend to use John Woo solution)

Try this:

using System.Diagnostics;
// Get call stack
StackTrace stackTrace = new StackTrace(); 
// Get calling method name
Console.WriteLine(stackTrace.GetFrame(1).GetMethod().Name);

one-liner:

(new System.Diagnostics.StackTrace()).GetFrame(1).GetMethod().Name

It is from Get Calling Method using Reflection [C#].

You can add this code to your asp.net webapi project

in file Global.asax

    protected void Application_BeginRequest()
{
    string origin = Request.Headers.Get("Origin");
    if (Request.HttpMethod == "OPTIONS")
    {
        Response.AddHeader("Access-Control-Allow-Origin", origin);
        Response.AddHeader("Access-Control-Allow-Headers", "*");
        Response.AddHeader("Access-Control-Allow-Methods", "GET,POST,PUT,OPTIONS,DELETE");
        Response.StatusCode = 200;
        Response.End();
    }
    else
    {
        Response.AddHeader("Access-Control-Allow-Origin", origin);
        Response.AddHeader("Access-Control-Allow-Headers", "*");
        Response.AddHeader("Access-Control-Allow-Methods", "GET,POST,PUT,OPTIONS,DELETE");
    }
}

try this code worked for me

SELECT user_display_image AS user_image,
       user_display_name AS user_name,
       invitee_phone,
       (CASE WHEN invitee_status = 1 THEN "attending"
             WHEN invitee_status = 2 THEN "unsure"
             WHEN invitee_status = 3 THEN "declined"
             WHEN invitee_status = 0 THEN "notreviwed"
       END) AS invitee_status
  FROM your_table

You can define a template which will work not only just with doubles, but with other types as well.

template <typename T> string tostr(const T& t) { 
   ostringstream os; 
   os<<t; 
   return os.str(); 
} 

Then you can use it for other types.

double x = 14.4;
int y = 21;

string sx = tostr(x);
string sy = tostr(y);

You could always use something like this:

string(//Sesscode) castable as xs:decimal

castable is documented by W3C here.

do this in global.asax.cs:

protected void Application_Start()
{
  //string ServerSoftware = Context.Request.ServerVariables["SERVER_SOFTWARE"];
  string server = Context.Request.ServerVariables["SERVER_NAME"];
  string port = Context.Request.ServerVariables["SERVER_PORT"];
  HttpRuntime.Cache.Insert("basePath", "http://" + server + ":" + port + "/");
  // ...
}

works like a charm. this.Context.Request is there...

this.Request throws exception intentionally based on a flag

The best way to do that programmatically is using the next method:

public static DigitsKeyListener getInstance (boolean sign, boolean decimal) 

Returns a DigitsKeyListener that accepts the digits 0 through 9, plus the minus sign (only at the beginning) and/or decimal point (only one per field) if specified.

This solve the problem about the many '.' in EditText

editText.setKeyListener(DigitsKeyListener.getInstance(true,true)); // decimals and positive/negative numbers. 

editText.setKeyListener(DigitsKeyListener.getInstance(false,true)); // positive decimals numbers. 

editText.setKeyListener(DigitsKeyListener.getInstance(false,false)); // positive integer numbers.

editText.setKeyListener(DigitsKeyListener.getInstance(true,false)); // positive/negative integer numbers.

If you're using ES6, here's some simple example code:

import React from 'wherever_react_is';

class TestApp extends React.Component {

  getComponent(event) {
      console.log('li item clicked!');
      event.currentTarget.style.backgroundColor = '#ccc';
  }

  render() {
    return(
       <div>
         <ul>
            <li onClick={this.getComponent.bind(this)}>Component 1</li>
         </ul>
       </div>
    );
  }
}

export default TestApp;

In ES6 class bodies, functions no longer require the 'function' keyword and they don't need to be separated by commas. You can also use the => syntax as well if you wish.

Here's an example with dynamically created elements:

import React from 'wherever_react_is';

class TestApp extends React.Component {

constructor(props) {
  super(props);

  this.state = {
    data: [
      {name: 'Name 1', id: 123},
      {name: 'Name 2', id: 456}
    ]
  }
}

  getComponent(event) {
      console.log('li item clicked!');
      event.currentTarget.style.backgroundColor = '#ccc';
  }

  render() {        
       <div>
         <ul>
         {this.state.data.map(d => {
           return(
              <li key={d.id} onClick={this.getComponent.bind(this)}>{d.name}</li>
           )}
         )}
         </ul>
       </div>
    );
  }
}

export default TestApp;

Note that each dynamically created element should have a unique reference 'key'.

Furthermore, if you would like to pass the actual data object (rather than the event) into your onClick function, you will need to pass that into your bind. For example:

New onClick function:

getComponent(object) {
    console.log(object.name);
}

Passing in the data object:

{this.state.data.map(d => {
    return(
      <li key={d.id} onClick={this.getComponent.bind(this, d)}>{d.name}</li>
    )}
)}

As Matt has said, use Console.Write. I would also recommend explicitly flushing the output, however - I believe WriteLine does this automatically, but I'd seen oddities when just using Console.Write and then waiting. So Matt's code becomes:

Console.Write("What is your name? ");
Console.Out.Flush();
var name = Console.ReadLine();

Services are required to connect to the Service Control Manager and provide feedback at start up (ie. tell SCM 'I'm alive!'). That's why C# application have a different project template for services. You have two alternatives:

• wrapp your exe on srvany.exe, as described in KB How To Create a User-Defined Service
• have your C# app detect when is launched as a service (eg. command line param) and switch control to a class that inherits from ServiceBase and properly implements a service.

Confusing messages

These messages are rather misleading and understandably a source of confusion. Older Ubuntu versions used Libav which is a fork of the FFmpeg project. FFmpeg returned in Ubuntu 15.04 "Vivid Vervet".

The fork was basically a non-amicable result of conflicting personalities and development styles within the FFmpeg community. It is worth noting that the maintainer for Debian/Ubuntu switched from FFmpeg to Libav on his own accord due to being involved with the Libav fork.

The real ffmpeg vs the fake one

For a while both Libav and FFmpeg separately developed their own version of ffmpeg.

Libav then renamed their bizarro ffmpeg to avconv to distance themselves from the FFmpeg project. During the transition period the "not developed anymore" message was displayed to tell users to start using avconv instead of their counterfeit version of ffmpeg. This confused users into thinking that FFmpeg (the project) is dead, which is not true. A bad choice of words, but I can't imagine Libav not expecting such a response by general users.

This message was removed upstream when the fake "ffmpeg" was finally removed from the Libav source, but, depending on your version, it can still show up in Ubuntu because the Libav source Ubuntu uses is from the ffmpeg-to-avconv transition period.

In June 2012, the message was re-worded for the package libav - 4:0.8.3-0ubuntu0.12.04.1. Unfortunately the new "deprecated" message has caused additional user confusion.

Starting with Ubuntu 15.04 "Vivid Vervet", FFmpeg's ffmpeg is back in the repositories again.

libav vs Libav

To further complicate matters, Libav chose a name that was historically used by FFmpeg to refer to its libraries (libavcodec, libavformat, etc). For example the libav-user mailing list, for questions and discussions about using the FFmpeg libraries, is unrelated to the Libav project.

How to tell the difference

If you are using avconv then you are using Libav. If you are using ffmpeg you could be using FFmpeg or Libav. Refer to the first line in the console output to tell the difference: the copyright notice will either mention FFmpeg or Libav.

Secondly, the version numbering schemes differ. Each of the FFmpeg or Libav libraries contains a version.h header which shows a version number. FFmpeg will end in three digits, such as 57.67.100, and Libav will end in one digit such as 57.67.0. You can also view the library version numbers by running ffmpeg or avconv and viewing the console output.

If you want to use the real ffmpeg

Ubuntu 15.04 "Vivid Vervet" or newer

The real ffmpeg is in the repository, so you can install it with:

apt-get install ffmpeg

For older Ubuntu versions

Your options are:

• Download a recent Linux build of ffmpeg,
• follow a step-by-step guide to compile ffmpeg,
• or use Doug McMahon's PPA (for Ubuntu 14.04 LTS "Trusty Tahr")

These methods are non-intrusive, reversible, and will not interfere with the system or any repository packages.

Another possible option is to upgrade to Ubuntu 15.04 "Vivid Vervet" or newer and just use ffmpeg from the repository.

Also see

For an interesting blog article on the situation, as well as a discussion about the main technical differences between the projects, see The FFmpeg/Libav situation.

This utility function merge multiple functions into one (using a custom name), only requirement is that provided functions are properly "new lined" at start and end of its scoop.

const createFn = function(name, functions, strict=false) {

    var cr = `\n`, a = [ 'return function ' + name + '(p) {' ];

    for(var i=0, j=functions.length; i<j; i++) {
        var str = functions[i].toString();
        var s = str.indexOf(cr) + 1;
        a.push(str.substr(s, str.lastIndexOf(cr) - s));
    }
    if(strict == true) {
        a.unshift('\"use strict\";' + cr)
    }
    return new Function(a.join(cr) + cr + '}')();
}

// test
var a = function(p) {
    console.log("this is from a");
}
var b = function(p) {
    console.log("this is from b");
}
var c = function(p) {
    console.log("p == " + p);
}

var abc = createFn('aGreatName', [a,b,c])

console.log(abc) // output: function aGreatName()

abc(123)

// output
this is from a
this is from b
p == 123

SELECT @var = col1,
       @var2 = col2
FROM   Table

Here is some interesting information about SET / SELECT

• SET is the ANSI standard for variable assignment, SELECT is not.
• SET can only assign one variable at a time, SELECT can make multiple assignments at once.
• If assigning from a query, SET can only assign a scalar value. If the query returns multiple values/rows then SET will raise an error. SELECT will assign one of the values to the variable and hide the fact that multiple values were returned (so you'd likely never know why something was going wrong elsewhere - have fun troubleshooting that one)
• When assigning from a query if there is no value returned then SET will assign NULL, where SELECT will not make the assignment at all (so the variable will not be changed from it's previous value)
• As far as speed differences - there are no direct differences between SET and SELECT. However SELECT's ability to make multiple assignments in one shot does give it a slight speed advantage over SET.

Yes, SQL Server 2012 supports multiple inserts - that feature was introduced in SQL Server 2008.

That makes me wonder if you have Management Studio 2012, but you're really connected to a SQL Server 2005 instance ...

What version of the SQL Server engine do you get from SELECT @@VERSION ??

I don't think it's 64/32 bit error. My Dev machine and DB server are 32bit. But I could make it work. I had to set Delay Validation property of Data Flow tasks to TRUE.

As an alternative (since I didn't know about jsbeautifier.org until now), I have used a bookmarklet that reenabled the decode button in Dean Edward's Packer.

I found the instructions and bookmarklet here.

here is the bookmarklet (in case the site is down)

javascript:for%20(i=0;i<document.forms.length;++i)%20{for(j=0;j<document.forms[i].elements.length;++j){document.forms[i].elements[j].removeAttribute(%22readonly%22);document.forms[i].elements[j].removeAttribute(%22disabled%22);}}

   private Object lock = new Object();
   private volatile boolean isOdd = false;


    public void generateEvenNumbers(int number) throws InterruptedException {

        synchronized (lock) {
            while (isOdd == false) 
            {
                lock.wait();
            }
            System.out.println(number);
            isOdd = false;
            lock.notifyAll();
        }
    }

    public void generateOddNumbers(int number) throws InterruptedException {

        synchronized (lock) {
            while (isOdd == true) {
                lock.wait();
            }
            System.out.println(number);
            isOdd = true;
            lock.notifyAll();
        }
    }

Expanding on retrography's answer..: I had this same problem even when using LocalDate and not LocalDateTime. The issue was that I had created my DateTimeFormatter using .withResolverStyle(ResolverStyle.STRICT);, so I had to use date pattern uuuuMMdd instead of yyyyMMdd (i.e. "year" instead of "year-of-era")!

DateTimeFormatter formatter = new DateTimeFormatterBuilder()
  .parseStrict()
  .appendPattern("uuuuMMdd")
  .toFormatter()
  .withResolverStyle(ResolverStyle.STRICT);
LocalDate dt = LocalDate.parse("20140218", formatter);

(This solution was originally a comment to retrography's answer, but I was encouraged to post it as a stand-alone answer because it apparently works really well for many people.)

pod --version

to get the version of installed pod

React gives a security issue when using a tag with target="_blank".

I managed to get it working like that:

<a href={uploadedFileLink} target="_blank" rel="noopener noreferrer" download>
   <Button>
      <i className="fas fa-download"/>
      Download File
   </Button>
</a>

You can try this way also,

Html:

<form action="javascript:next()" method="post">
<input type="submit" value=Submit /></form>

Javascript:

      function next(){
        //Location where you want to forward your values
        window.location.href = "http://localhost:8563/And/try1.jsp?dymanicValue=" + values; 
        }

var arr = [];
var len = oFullResponse.results.length;
for (var i = 0; i < len; i++) {
    arr.push({
        key: oFullResponse.results[i].label,
        sortable: true,
        resizeable: true
    });
}

The second option didn't work for me because the .Text element was out of scope (C# 4.0 VS2008). This was my solution...

string test = null;
foreach (ComboBoxItem item in e.AddedItems)
{
   test = item.Content.ToString();
   break;
}

First you don't need to change anything yet.

Those nonstandard behaviors remain the default for TIMESTAMP but as of MySQL 5.6.6 are deprecated and this warning appears at startup

Now if you want to move to new behaviors you have to add this line in your my.cnf in the [mysqld] section.

explicit_defaults_for_timestamp = 1

The location of my.cnf (or other config files) vary from one system to another. If you can't find it refer to https://dev.mysql.com/doc/refman/5.7/en/option-files.html

$('body').on("click mousedown mouseup focus blur keydown change mouseup click dblclick mousemove mouseover mouseout mousewheel keydown keyup keypress textInput touchstart touchmove touchend touchcancel resize scroll zoom focus blur select change submit reset",function(e){
     console.log(e);
}); 

If you aren't comfortable with using negative margins, check this out.

div {
  position: fixed;
  left: 50%;
  bottom: 20px;
  transform: translate(-50%, -50%);
  margin: 0 auto;
}

<div>
  Your Text
</div>

Especially useful when you don't know the width of the div.

align="center" has no effect.

Since you have position:absolute, I would recommend positioning it 50% from the left and then subtracting half of its width from its left margin.

#manipulate {
    position:absolute;
    width:300px;
    height:300px;
    background:#063;
    bottom:0px;
    right:25%;
    left:50%;
    margin-left:-150px;
}

Recursive php rename keys function:

function replaceKeys($oldKey, $newKey, array $input){
    $return = array(); 
    foreach ($input as $key => $value) {
        if ($key===$oldKey)
            $key = $newKey;

        if (is_array($value))
            $value = replaceKeys( $oldKey, $newKey, $value);

        $return[$key] = $value;
    }
    return $return; 
}

In Jupyter Notebook Markdown, you can use

<img src="RelPathofFolder/File" style="width:800px;height:300px;">

If your items are wider than the ListBox, the other answers here won't help: the items in the ItemTemplate remain wider than the ListBox.

The fix that worked for me was to disable the horizontal scrollbar, which, apparently, also tells the container of all those items to remain only as wide as the list box.

Hence the combined fix to get ListBox items that are as wide as the list box, whether they are smaller and need stretching, or wider and need wrapping, is as follows:

<ListBox HorizontalContentAlignment="Stretch" 
         ScrollViewer.HorizontalScrollBarVisibility="Disabled">

(credits for the scroll bar idea)

Convenience method for implementing @Pangea's answer:

/*
*  Convenience method to add a specified number of minutes to a Date object
*  From: http://stackoverflow.com/questions/9043981/how-to-add-minutes-to-my-date
*  @param  minutes  The number of minutes to add
*  @param  beforeTime  The time that will have minutes added to it
*  @return  A date object with the specified number of minutes added to it 
*/
private static Date addMinutesToDate(int minutes, Date beforeTime){
    final long ONE_MINUTE_IN_MILLIS = 60000;//millisecs

    long curTimeInMs = beforeTime.getTime();
    Date afterAddingMins = new Date(curTimeInMs + (minutes * ONE_MINUTE_IN_MILLIS));
    return afterAddingMins;
}

While Andriy's proposal will work well for INSERTs of a small number of records, full table scans will be done on the final join as both 'enumerated' and '@new_super' are not indexed, resulting in poor performance for large inserts.

This can be resolved by specifying a primary key on the @new_super table, as follows:

DECLARE @new_super TABLE (
  row_num INT IDENTITY(1,1) PRIMARY KEY CLUSTERED,
  super_id   int
);

This will result in the SQL optimizer scanning through the 'enumerated' table but doing an indexed join on @new_super to get the new key.

Use

window.location.hash

to retrieve everything beyond and including the #

You can simply save your data in a variable and use find(to get single object of records) or filter(to get single array of records) method of JavaScript.

For example :-

let data = {
 "list": [
   {"name":"my Name","id":12,"type":"car owner"},
   {"name":"my Name2","id":13,"type":"car owner2"},
   {"name":"my Name4","id":14,"type":"car owner3"},
   {"name":"my Name4","id":15,"type":"car owner5"}
]}

and now use below command onkeyup or enter

to get single object

data.list.find( record => record.name === "my Name")

to get single array object

data.list.filter( record => record.name === "my Name")

Building on the answer by @rajesh_kw (https://stackoverflow.com/a/22567796/4946681), I handle form post errors and success:

    $('#formName').on('submit', function(event) {
        event.preventDefault(); // or return false, your choice
        $.ajax({
            url: $(this).attr('action'),
            type: 'post',
            data: $(this).serialize(),
            success: function(data, textStatus, jqXHR) {
                // if success, HTML response is expected, so replace current
                if(textStatus === 'success') {
                    // https://stackoverflow.com/a/1236378/4946681
                    var newDoc = document.open('text/html', 'replace');
                    newDoc.write(data);
                    newDoc.close();
                }
            }
        }).fail(function(jqXHR, textStatus, errorThrown) {
            if(jqXHR.status == 0 || jqXHR == 302) {
                alert('Your session has ended due to inactivity after 10 minutes.\nPlease refresh this page, or close this window and log back in to system.');
            } else {
                alert('Unknown error returned while saving' + (typeof errorThrown == 'string' && errorThrown.trim().length > 0 ? ':\n' + errorThrown : ''));
            }
        });
    });

I make use of this so that my logic is reusable, I expect HTML to be returned on a success so I render it and replace the current page, and in my case I expect a redirect to the login page if the session is timed out, so I intercept that redirect in order to preserve the state of the page.

Now users can log in via another tab and try their submit again.

Without the combined child selector you would probably do something similar to this:

foo {
  bar {
    baz {
      color: red;
    }
  }
}

If you want to reproduce the same syntax with >, you could to this:

foo {
  > bar {
    > baz {
      color: red;
    }
  }
}

This compiles to this:

foo > bar > baz {
  color: red;
}

Or in sass:

foo
  > bar
    > baz
      color: red

Arrays.asList(array);    

Example:

 List<String> stooges = Arrays.asList("Larry", "Moe", "Curly");

See Arrays.asList class documentation.

It's HTML character references for encoding a character by its decimal code point

Look at the ASCII table here and you'll see that 39 (hex 0x27, octal 47) is the code for apostrophe

In this course(https://www.codeschool.com/courses/shaping-up-with-angular-js) they explain how to use "this" and many other stuff.

If you add method to the controller through "this" method, you have to call it in the view with controller's name "dot" your property or method.

For example using your controller in the view you may have code like this:

    <div data-ng-controller="YourController as aliasOfYourController">

       Your first pane is {{aliasOfYourController.panes[0]}}

    </div>

I have faced same problem. I solved this by Right click on project --->Team----> Refresh/cleanup

Among other already mentioned tools you can use also readelf (manual). It is similar to objdump but goes more into detail. See this for the difference explanation.

$ readelf -sW /lib/liblzma.so.5 |head -n10

Symbol table '.dynsym' contains 128 entries:
   Num:    Value  Size Type    Bind   Vis      Ndx Name
     0: 00000000     0 NOTYPE  LOCAL  DEFAULT  UND
     1: 00000000     0 FUNC    GLOBAL DEFAULT  UND pthread_mutex_unlock@GLIBC_2.0 (4)
     2: 00000000     0 FUNC    GLOBAL DEFAULT  UND pthread_mutex_destroy@GLIBC_2.0 (4)
     3: 00000000     0 NOTYPE  WEAK   DEFAULT  UND _ITM_deregisterTMCloneTable
     4: 00000000     0 FUNC    GLOBAL DEFAULT  UND memmove@GLIBC_2.0 (5)
     5: 00000000     0 FUNC    GLOBAL DEFAULT  UND free@GLIBC_2.0 (5)
     6: 00000000     0 FUNC    GLOBAL DEFAULT  UND memcpy@GLIBC_2.0 (5)

The Picup app is a way to take pictures from an HTML5 page and upload them to your server. It requires some extra programming on the server, but apart from PhoneGap, I have not found another way.

Rather than silencing the warnings, gcc style is usually to use either standard C constructs or the __attribute__ extension to tell the compiler more about your intention. For instance, the warning about assignment used as a condition is suppressed by putting the assignment in parentheses, i.e. if ((p=malloc(cnt))) instead of if (p=malloc(cnt)). Warnings about unused function arguments can be suppressed by some odd __attribute__ I can never remember, or by self-assignment, etc. But generally I prefer just globally disabling any warning option that generates warnings for things that will occur in correct code.

Shouldn't it be just the .list-group? See below,

<ul class="list-group">
  <li class="list-group-item active">Cras justo odio</li>
  <li class="list-group-item">Dapibus ac facilisis in</li>
  <li class="list-group-item">Morbi leo risus</li>
  <li class="list-group-item">Porta ac consectetur ac</li>
  <li class="list-group-item">Vestibulum at eros</li>
</ul>

Reference: Bootstrap 4 Basic Example of a List group

You can either give class name to all label so that all can have same width :

 .class-name {  width:200px;}

Example

.labelname{  width:200px;}

or you can simple give rest of label

label {  width:200px;  display: inline-block;}

You can also consider using Grunt (The JavaScript Task Runner). Can be easily integrated with shell. It supports reading YAML (grunt.file.readYAML) and JSON (grunt.file.readJSON) files.

This can be achieved by creating a task in Gruntfile.js (or Gruntfile.coffee), e.g.:

module.exports = function (grunt) {

    grunt.registerTask('foo', ['load_yml']);

    grunt.registerTask('load_yml', function () {
        var data = grunt.file.readYAML('foo.yml');
        Object.keys(data).forEach(function (g) {
          // ... switch (g) { case 'my_key':
        });
    });

};

then from shell just simply run grunt foo (check grunt --help for available tasks).

Further more you can implement exec:foo tasks (grunt-exec) with input variables passed from your task (foo: { cmd: 'echo bar <%= foo %>' }) in order to print the output in whatever format you want, then pipe it into another command.

There is also similar tool to Grunt, it's called gulp with additional plugin gulp-yaml.

Install via: npm install --save-dev gulp-yaml

Sample usage:

var yaml = require('gulp-yaml');

gulp.src('./src/*.yml')
  .pipe(yaml())
  .pipe(gulp.dest('./dist/'))

gulp.src('./src/*.yml')
  .pipe(yaml({ space: 2 }))
  .pipe(gulp.dest('./dist/'))

gulp.src('./src/*.yml')
  .pipe(yaml({ safe: true }))
  .pipe(gulp.dest('./dist/'))

To more options to deal with YAML format, check YAML site for available projects, libraries and other resources which can help you to parse that format.

Other tools:

• Jshon

  parses, reads and creates JSON

This is how you can do it-

HTML-

<div style="overflow:hidden; height:100%">
     <div style="float:left">a<br>b</div>
     <table cellpadding="0" cellspacing="0" style="height:100%;">     
          <tr><td>This is the content of a table that takes 100% height</td></tr>  
      </table>
 </div>

CSS-

html,body
{
    height:100%;
    background-color:grey;
}
table
{
    background-color:yellow;
}

See the DEMO

Update: Well, if you are not looking for applying 100% height to your parent containers, then here is a jQuery solution that should help you-

Demo-using jQuery

Script-

 $(document).ready(function(){
    var b= $(window).height(); //gets the window's height, change the selector if you are looking for height relative to some other element
    $("#tab").css("height",b);
});

I would be inclined to include the year in the output. One way:

select to_char(DATE_CREATED, 'YYYY-MM'), sum(Num_of_Pictures)
from pictures_table
group by to_char(DATE_CREATED, 'YYYY-MM')
order by 1

Another way (more standard SQL):

select extract(year from date_created) as yr, extract(month from date_created) as mon,
       sum(Num_of_Pictures)
from pictures_table
group by extract(year from date_created), extract(month from date_created)
order by yr, mon;

Remember the order by, since you presumably want these in order, and there is no guarantee about the order that rows are returned in after a group by.

The Charset used in the POST will match that of the Charset specified in the HTML hosting the form. Hence if your form is sent using UTF-8 encoding that is the encoding used for the posted content. The URL encoding is applied after the values are converted to the set of octets for the character encoding.

var newString = string.substr(0,string.indexOf(','));

Try this:

select * 
from xxx 
where dates >= '2012-10-26 00:00:00.000' and dates <= '2012-10-27 23:59:59.997'

Well, usually it is good to avoid asynchronous file operations. Here is the short (i.e. no error handling) sync example:

var fs = require('fs');
fs.writeFileSync(targetFile, fs.readFileSync(sourceFile));

There are generally 2 levels of buffering-

1. Kernel buffer Cache (makes read/write faster)

2. Buffering in I/O library (reduces no. of system calls)

Let's take example of fprintf and write().

When you call fprintf(), it doesn't wirte directly to the file. It first goes to stdio buffer in the program's memory. From there it is written to the kernel buffer cache by using write system call. So one way to skip I/O buffer is directly using write(). Other ways are by using setbuff(stream,NULL). This sets the buffering mode to no buffering and data is directly written to kernel buffer. To forcefully make the data to be shifted to kernel buffer, we can use "\n", which in case of default buffering mode of 'line buffering', will flush I/O buffer. Or we can use fflush(FILE *stream).

Now we are in kernel buffer. Kernel(/OS) wants to minimise disk access time and hence it reads/writes only blocks of disk. So when a read() is issued, which is a system call and can be invoked directly or through fscanf(), kernel reads the disk block from disk and stores it in a buffer. After that data is copied from here to user space.

Similarly that fprintf() data recieved from I/O buffer is written to the disk by the kernel. This makes read() write() faster.

Now to force the kernel to initiate a write(), after which data transfer is controlled by hardware controllers, there are also some ways. We can use O_SYNC or similar flags during write calls. Or we could use other functions like fsync(),fdatasync(),sync() to make the kernel initiate writes as soon as data is available in the kernel buffer.

You could subscribe for the onkeypress event:

<input type="text" class="textfield" value="" id="extra7" name="extra7" onkeypress="return isNumber(event)" />

and then define the isNumber function:

function isNumber(evt) {
    evt = (evt) ? evt : window.event;
    var charCode = (evt.which) ? evt.which : evt.keyCode;
    if (charCode > 31 && (charCode < 48 || charCode > 57)) {
        return false;
    }
    return true;
}

You can see it in action here.

I think the correct syntax is:

cmd /k "cd c:\<folder name>"

For those that can accidentally add pdb into live commits, I can suggest this extension of #Koobz answer:

@register.filter 
def pdb(element):
    from django.conf import settings
    if settings.DEBUG:    
        import pdb
        pdb.set_trace()
    return element

Go to first line

• :1

• or Ctrl + Home

Go to last line

• :%

• or Ctrl + End

Go to another line (f.i. 27)

• :27

[Works On VIM 7.4 (2016) and 8.0 (2018)]

I usually use numpy sum over the logical condition column:

>>> import numpy as np
>>> import pandas as pd
>>> df = pd.DataFrame({'Age' : [20,24,18,5,78]})
>>> np.sum(df['Age'] > 20)
2

This seems to me slightly shorter than the solution presented above

Little performance tip if somebody has a datastore kind of service with key -> value pairs:

If you have a service called dataStore, you can update a timestamp whenever your big data object changes. This way instead of deep watching the whole object, you are only watching a timestamp for change.

app.factory('dataStore', function () {

    var store = { data: [], change: [] };

    // when storing the data, updating the timestamp
    store.setData = function(key, data){
        store.data[key] = data;
        store.setChange(key);
    }

    // get the change to watch
    store.getChange = function(key){
        return store.change[key];
    }

    // set the change
    store.setChange = function(key){
        store.change[key] = new Date().getTime();
    }

});

And in a directive you are only watching the timestamp to change

app.directive("myDir", function ($scope, dataStore) {
    $scope.dataStore = dataStore;
    $scope.$watch('dataStore.getChange("myKey")', function(newVal, oldVal){
        if(newVal !== oldVal && newVal){
            // Data changed
        }
    });
});

If you get an exception for : Invalid column type

Please use getNamedParameterJdbcTemplate() instead of getJdbcTemplate()

 List<Foo> foo = getNamedParameterJdbcTemplate().query("SELECT * FROM foo WHERE a IN (:ids)",parameters,
 getRowMapper());

Note that the second two arguments are swapped around.

T-SQL doesn't support arrays that I'm aware of.

What's your table structure? You could probably design a query that does this instead:

select
month,
sum(sales)
from sales_table
group by month
order by month

SetRetainInstance(true) allows the fragment sort of survive. Its members will be retained during configuration change like rotation. But it still may be killed when the activity is killed in the background. If the containing activity in the background is killed by the system, it's instanceState should be saved by the system you handled onSaveInstanceState properly. In another word the onSaveInstanceState will always be called. Though onCreateView won't be called if SetRetainInstance is true and fragment/activity is not killed yet, it still will be called if it's killed and being tried to be brought back.

Here are some analysis of the android activity/fragment hope it helps. http://ideaventure.blogspot.com.au/2014/01/android-activityfragment-life-cycle.html

In case you're using Gradle Kotlin syntax, you also can do:

tasks.taskName {
    environment(mapOf("A" to 1, "B" to "C"))
}

So for test task this would be:

tasks.test {
    environment(mapOf("SOME_TEST_VAR" to "aaa"))
}

As Leo points out, the code you added to your question would not suggest a strong reference cycle (a.k.a., retain cycle). One operation-related issue that could cause a strong reference cycle would be if the operation is not getting released. While your code snippet suggests that you have not defined your operation to be concurrent, but if you have, it wouldn't be released if you never posted isFinished, or if you had circular dependencies, or something like that. And if the operation isn't released, the view controller wouldn't be released either. I would suggest adding a breakpoint or NSLog in your operation's dealloc method and confirm that's getting called.

You said:

I understand the notion of retain cycles, but I am not quite sure what happens in blocks, so that confuses me a little bit

The retain cycle (strong reference cycle) issues that occur with blocks are just like the retain cycle issues you're familiar with. A block will maintain strong references to any objects that appear within the block, and it will not release those strong references until the block itself is released. Thus, if block references self, or even just references an instance variable of self, that will maintain strong reference to self, that is not resolved until the block is released (or in this case, until the NSOperation subclass is released.

For more information, see the Avoid Strong Reference Cycles when Capturing self section of the Programming with Objective-C: Working with Blocks document.

If your view controller is still not getting released, you simply have to identify where the unresolved strong reference resides (assuming you confirmed the NSOperation is getting deallocated). A common example is the use of a repeating NSTimer. Or some custom delegate or other object that is erroneously maintaining a strong reference. You can often use Instruments to track down where objects are getting their strong references, e.g.:

Or in Xcode 5:

Balabaster's answer is correct if you want to remove all instances of the element. If you want to remove only the first one, you would do something like this:

int[] numbers = { 1, 3, 4, 9, 2, 4 };
int numToRemove = 4;
int firstFoundIndex = Array.IndexOf(numbers, numToRemove);
if (numbers >= 0)
{
    numbers = numbers.Take(firstFoundIndex).Concat(numbers.Skip(firstFoundIndex + 1)).ToArray();
}

You can do

dt[, !c("V1","V2","V3","V5")]

to get

            V4         V6         V7        V8         V9        V10
 1: 0.88612076 0.94727825 0.50502208 0.6702523 0.24186706 0.96263313
 2: 0.11121752 0.13969145 0.19092645 0.9589867 0.27968190 0.07796870
 3: 0.50179822 0.10641301 0.08540322 0.3297847 0.03643195 0.18082180
 4: 0.09787517 0.07312777 0.88077548 0.3218041 0.75826099 0.55847774
 5: 0.73475574 0.96644484 0.58261312 0.9921499 0.78962675 0.04976212
 6: 0.88861117 0.85690337 0.27723130 0.3662264 0.50881663 0.67402625
 7: 0.33933983 0.83392047 0.30701697 0.6138122 0.85107176 0.58609504
 8: 0.89907094 0.61389815 0.19957386 0.3968331 0.78876682 0.90546328
 9: 0.54136123 0.08274569 0.25190790 0.1920462 0.15142604 0.12134807
10: 0.36511064 0.88117171 0.05730210 0.9441072 0.40125023 0.62828674

Static variables have a single value for all instances of a class.

If you were to make something like:

public class Person
{
    private static int numberOfEyes;
    private String name;
}

and then you wanted to change your name, that is fine, my name stays the same. If, however you wanted to change it so that you had 17 eyes then everyone in the world would also have 17 eyes.

Sometimes the dependencies don't update even with Maven->Update Project->Force Update option checked using m2eclipse plugin.

In case it doesn't work for anyone else, this method worked for me:

• mvn eclipse:eclipse

  This will update your .classpath file with the new dependencies while preserving your .project settings and other eclipse config files.

If you want to clear your old settings for whatever reason, you can run:

• mvn eclipse:clean

• mvn eclipse:eclipse

  mvn eclipse:clean will erase your old settings, then mvn eclipse:eclipse will create new .project, .classpath and other eclipse config files.

How to stop a thread created by implementing runnable interface?

There are many ways that you can stop a thread but all of them take specific code to do so. A typical way to stop a thread is to have a volatile boolean shutdown field that the thread checks every so often:

  // set this to true to stop the thread
  volatile boolean shutdown = false;
  ...
  public void run() {
      while (!shutdown) {
          // continue processing
      }
  }

You can also interrupt the thread which causes sleep(), wait(), and some other methods to throw InterruptedException. You also should test for the thread interrupt flag with something like:

  public void run() {
      while (!Thread.currentThread().isInterrupted()) {
          // continue processing
          try {
              Thread.sleep(1000);
          } catch (InterruptedException e) {
              // good practice
              Thread.currentThread().interrupt();
              return;
          }
      }
  }

Note that that interrupting a thread with interrupt() will not necessarily cause it to throw an exception immediately. Only if you are in a method that is interruptible will the InterruptedException be thrown.

If you want to add a shutdown() method to your class which implements Runnable, you should define your own class like:

public class MyRunnable implements Runnable {
    private volatile boolean shutdown;
    public void run() {
        while (!shutdown) {
            ...
        }
    }
    public void shutdown() {
        shutdown = true;
    }
}

verify the storage space on your device

Painfully slow (and crudely implemented) but a combination of svn log and svn cat works if you are searching the history of single files or small repositories:

svn log filetosearch |
    grep '^r' |
    cut -f1 -d' ' |
    xargs -i bash -c "echo '{}'; svn cat filetosearch -'{}'" 

will output each revision number where file changed and the file. You could always cat each revision into a different file and then grep for changes.

PS. Massive upvotes to anyone that shows me how to do this properly!

In Eclipse, go to Build Path, click "Add Library", select JRE System Library, click "Next", select option "Workspace default JRE(i)", and click "Finish".

This worked for me.

CASE WHEN ', ' + dbo.Table.Column +',' LIKE '%, lactulose,%' 
  THEN 'BP Medication' ELSE '' END AS [BP Medication]

The leading ', ' and trailing ',' are added so that you can handle the match regardless of where it is in the string (first entry, last entry, or anywhere in between).

That said, why are you storing data you want to search on as a comma-separated string? This violates all kinds of forms and best practices. You should consider normalizing your schema.

In addition: don't use 'single quotes' as identifier delimiters; this syntax is deprecated. Use [square brackets] (preferred) or "double quotes" if you must. See "string literals as column aliases" here: http://msdn.microsoft.com/en-us/library/bb510662%28SQL.100%29.aspx

EDIT If you have multiple values, you can do this (you can't short-hand this with the other CASE syntax variant or by using something like IN()):

CASE 
  WHEN ', ' + dbo.Table.Column +',' LIKE '%, lactulose,%' 
  WHEN ', ' + dbo.Table.Column +',' LIKE '%, amlodipine,%' 
  THEN 'BP Medication' ELSE '' END AS [BP Medication]

If you have more values, it might be worthwhile to use a split function, e.g.

USE tempdb;
GO

CREATE FUNCTION dbo.SplitStrings(@List NVARCHAR(MAX))
RETURNS TABLE
AS
   RETURN ( SELECT DISTINCT Item FROM
       ( SELECT Item = x.i.value('(./text())[1]', 'nvarchar(max)')
         FROM ( SELECT [XML] = CONVERT(XML, '<i>'
         + REPLACE(@List,',', '</i><i>') + '</i>').query('.')
           ) AS a CROSS APPLY [XML].nodes('i') AS x(i) ) AS y
       WHERE Item IS NOT NULL
   );
GO

CREATE TABLE dbo.[Table](ID INT, [Column] VARCHAR(255));
GO

INSERT dbo.[Table] VALUES
(1,'lactulose, Lasix (furosemide), oxazepam, propranolol, rabeprazole, sertraline,'),
(2,'lactulite, Lasix (furosemide), lactulose, propranolol, rabeprazole, sertraline,'),
(3,'lactulite, Lasix (furosemide), oxazepam, propranolol, rabeprazole, sertraline,'),
(4,'lactulite, Lasix (furosemide), lactulose, amlodipine, rabeprazole, sertraline,');

SELECT t.ID
  FROM dbo.[Table] AS t
  INNER JOIN dbo.SplitStrings('lactulose,amlodipine') AS s
  ON ', ' + t.[Column] + ',' LIKE '%, ' + s.Item + ',%'
  GROUP BY t.ID;
GO

Results:

ID
----
1
2
4

Static methods are not instantiated as such, they're just available without an object reference.

A call to a static method is done through the class name, not through an object reference, and the Intermediate Language (IL) code to call it will call the abstract method through the name of the class that defined it, not necessarily the name of the class you used.

Let me show an example.

With the following code:

public class A
{
    public static void Test()
    {
    }
}

public class B : A
{
}

If you call B.Test, like this:

class Program
{
    static void Main(string[] args)
    {
        B.Test();
    }
}

Then the actual code inside the Main method is as follows:

.entrypoint
.maxstack 8
L0000: nop 
L0001: call void ConsoleApplication1.A::Test()
L0006: nop 
L0007: ret 

As you can see, the call is made to A.Test, because it was the A class that defined it, and not to B.Test, even though you can write the code that way.

If you had class types, like in Delphi, where you can make a variable referring to a type and not an object, you would have more use for virtual and thus abstract static methods (and also constructors), but they aren't available and thus static calls are non-virtual in .NET.

I realize that the IL designers could allow the code to be compiled to call B.Test, and resolve the call at runtime, but it still wouldn't be virtual, as you would still have to write some kind of class name there.

Virtual methods, and thus abstract ones, are only useful when you're using a variable which, at runtime, can contain many different types of objects, and you thus want to call the right method for the current object you have in the variable. With static methods you need to go through a class name anyway, so the exact method to call is known at compile time because it can't and won't change.

Thus, virtual/abstract static methods are not available in .NET.

A correct way of iterating over the vector and printing its values is as follows:

#include<vector>

// declare the vector of type int
vector<int> v;

// insert elements in the vector
for (unsigned int i = 0; i < 5; ++i){
    v.push_back(i);
}

// print those elements
for (auto it = v.begin(); it != v.end(); ++it){
    std::cout << *it << std::endl;
}

But at least in the present case it is nicer to use a range-based for loop:
for (auto x: v) std::cout << x << "\n";
(You may also add & after auto to make x a reference to the elements rather than a copy of them. It is then very similar to the above iterator-based approach, but easier to read and write.)

The following works as of now (tested in Chrome and Firefox):

<form onsubmit="event.preventDefault(); validateMyForm();">

Where validateMyForm() is a function that returns false if validation fails. The key point is to use the name event. We cannot use for e.g. e.preventDefault().

I had a similar problem but the previous coder only provided the date in mm-yyyy format. My solution is simple but might prove helpful to some (I also wanted to be sure beginning and ending spaces were eliminated):

SELECT ... FROM ....WHERE 
CONVERT(datetime,REPLACE(LEFT(LTRIM([MoYr]),2),'-
','')+'/01/'+RIGHT(RTRIM([MoYr]),4)) >=  DATEADD(year,-1,GETDATE())

UPDATE 
    myTable
SET 
    col = CONCAT( col , "string" )

Could not work it out. The request syntax was correct, but "0 line affected" when executed.

The solution was :

UPDATE 
    myTable 
SET 
    col = CONCAT( myTable.col , "string" )

That one worked.

First of all you missed ScriptService attribute to add in webservice.

[ScriptService]

After then try following method to call webservice via JSON.

        var webAddr = "http://Domain/VBRService.asmx/callJson";
        var httpWebRequest = (HttpWebRequest)WebRequest.Create(webAddr);
        httpWebRequest.ContentType = "application/json; charset=utf-8";
        httpWebRequest.Method = "POST";            

        using (var streamWriter = new StreamWriter(httpWebRequest.GetRequestStream()))
        {
            string json = "{\"x\":\"true\"}";

            streamWriter.Write(json);
            streamWriter.Flush();
        }

        var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();
        using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
        {
            var result = streamReader.ReadToEnd();
            return result;
        }

I'm not convinced its a good idea to return image data in a REST service. It ties up your application server's memory and IO bandwidth. Much better to delegate that task to a proper web server that is optimized for this kind of transfer. You can accomplish this by sending a redirect to the image resource (as a HTTP 302 response with the URI of the image). This assumes of course that your images are arranged as web content.

Having said that, if you decide you really need to transfer image data from a web service you can do so with the following (pseudo) code:

@Path("/whatever")
@Produces("image/png")
public Response getFullImage(...) {

    BufferedImage image = ...;

    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    ImageIO.write(image, "png", baos);
    byte[] imageData = baos.toByteArray();

    // uncomment line below to send non-streamed
    // return Response.ok(imageData).build();

    // uncomment line below to send streamed
    // return Response.ok(new ByteArrayInputStream(imageData)).build();
}

Add in exception handling, etc etc.

1.this is my answer for your problem.

.ModalCarrot::before {
content:'';
background: url('blackCarrot.png'); /*url of image*/
height: 16px; /*height of image*/
width: 33px;  /*width of image*/
position: absolute;
}

To remove packages in folder node_modules in bulk, you could also remove them from file package.json, save it, and then run npm prune in the terminal.

This will remove those packages, which exist in the file system, but are not used/declared in file package.json.

P.S.: This is particularly useful on Windows, as you may often encounter problems with being unable to delete some files due to the "exceeded path length limit".

Use str.join:

In [27]: mylist = ['10', '12', '14']

In [28]: print '\n'.join(mylist)
10
12
14

It's a pity to use .NET and not use collections and lambda to save your time and code lines This is an example of how this works: Transform yourDataTable to Enumerable, filter it if you want , according a "FILTER_ROWS_FIELD" column, and if you want, group your data by a "A_GROUP_BY_FIELD". Then get the count, the sum, or whatever you wish. If you want a count and a sum without grouby don't group the data

var groupedData = from b in yourDataTable.AsEnumerable().Where(r=>r.Field<int>("FILTER_ROWS_FIELD").Equals(9999))
                          group b by b.Field<string>("A_GROUP_BY_FIELD") into g
                          select new
                          {
                              tag = g.Key,
                              count = g.Count(),
                              sum = g.Sum(c => c.Field<double>("rvMoney"))
                          };

The window.navigator.platform property is not spoofed when the userAgent string is changed. I tested on my Mac if I change the userAgent to iPhone or Chrome Windows, navigator.platform remains MacIntel.

The property is also read-only

I could came up with the following table

Mac Computers

Mac68K Macintosh 68K system.
MacPPC Macintosh PowerPC system.
MacIntel Macintosh Intel system.

iOS Devices

iPhone iPhone.
iPod iPod Touch.
iPad iPad.

Modern macs returns navigator.platform == "MacIntel" but to give some "future proof" don't use exact matching, hopefully they will change to something like MacARM or MacQuantum in future.

var isMac = navigator.platform.toUpperCase().indexOf('MAC')>=0;

To include iOS that also use the "left side"

var isMacLike = /(Mac|iPhone|iPod|iPad)/i.test(navigator.platform);
var isIOS = /(iPhone|iPod|iPad)/i.test(navigator.platform);

var is_OSX = /(Mac|iPhone|iPod|iPad)/i.test(navigator.platform);_x000D_
var is_iOS = /(iPhone|iPod|iPad)/i.test(navigator.platform);_x000D_
_x000D_
var is_Mac = navigator.platform.toUpperCase().indexOf('MAC') >= 0;_x000D_
var is_iPhone = navigator.platform == "iPhone";_x000D_
var is_iPod = navigator.platform == "iPod";_x000D_
var is_iPad = navigator.platform == "iPad";_x000D_
_x000D_
/* Output */_x000D_
var out = document.getElementById('out');_x000D_
if (!is_OSX) out.innerHTML += "This NOT a Mac or an iOS Device!";_x000D_
if (is_Mac) out.innerHTML += "This is a Mac Computer!\n";_x000D_
if (is_iOS) out.innerHTML += "You're using an iOS Device!\n";_x000D_
if (is_iPhone) out.innerHTML += "This is an iPhone!";_x000D_
if (is_iPod) out.innerHTML += "This is an iPod Touch!";_x000D_
if (is_iPad) out.innerHTML += "This is an iPad!";_x000D_
out.innerHTML += "\nPlatform: " + navigator.platform;

<pre id="out"></pre>

Since most O.S. use the close button on the right, you can just move the close button to the left when the user is on a MacLike O.S., otherwise isn't a problem if you put it on the most common side, the right.

setTimeout(test, 1000); //delay for demonstration_x000D_
_x000D_
function test() {_x000D_
_x000D_
  var mac = /(Mac|iPhone|iPod|iPad)/i.test(navigator.platform);_x000D_
_x000D_
  if (mac) {_x000D_
    document.getElementById('close').classList.add("left");_x000D_
  }_x000D_
}

#window {_x000D_
  position: absolute;_x000D_
  margin: 1em;_x000D_
  width: 300px;_x000D_
  padding: 10px;_x000D_
  border: 1px solid gray;_x000D_
  background-color: #DDD;_x000D_
  text-align: center;_x000D_
  box-shadow: 0px 1px 3px #000;_x000D_
}_x000D_
#close {_x000D_
  position: absolute;_x000D_
  top: 0px;_x000D_
  right: 0px;_x000D_
  width: 22px;_x000D_
  height: 22px;_x000D_
  margin: -12px;_x000D_
  box-shadow: 0px 1px 3px #000;_x000D_
  background-color: #000;_x000D_
  border: 2px solid #FFF;_x000D_
  border-radius: 22px;_x000D_
  color: #FFF;_x000D_
  text-align: center;_x000D_
  font: 14px"Comic Sans MS", Monaco;_x000D_
}_x000D_
#close.left{_x000D_
  left: 0px;_x000D_
}

<div id="window">_x000D_
  <div id="close">x</div>_x000D_
  <p>Hello!</p>_x000D_
  <p>If the "close button" change to the left side</p>_x000D_
  <p>you're on a Mac like system!</p>_x000D_
</div>

http://www.nczonline.net/blog/2007/12/17/don-t-forget-navigator-platform/

this worked for me:

ProxyRequests     Off
ProxyPreserveHost On
RewriteEngine On

<Proxy http://localhost:8123>
Order deny,allow
Allow from all
</Proxy>

ProxyPass         /node  http://localhost:8123  
ProxyPassReverse  /node  http://localhost:8123

I would insert all the emails into a database (sort of like a queue), then process them one at a time as you have done in your code (if you want to use swiftmailer or phpmailer etc, you can do that too.)

After each mail is sent, update the database to record the date/time it was sent.

By putting them in the database first you have

1. a record of who you sent it to
2. if your script times out or fails and you have to run it again, then you won't end up sending the same email out to people twice
3. you can run the send process from a cron job and do a batch at a time, so that your mail server is not overwhelmed, and keep track of what has been sent

Keep in mind, how to automate bounced emails or invalid emails so they can automatically removed from your list.

If you are sending that many emails you are bound to get a few bounces.

Add the template and give date pipe, you need to use escape characters for the format of the date. You can give any format as you want like 'MM-yyyy-dd' etc.

template: '{{ current_date | date: \'yyyy-MM-dd\' }}',

Try the following:

public static Stream ToStream(this Image image, ImageFormat format) {
  var stream = new System.IO.MemoryStream();
  image.Save(stream, format);
  stream.Position = 0;
  return stream;
}

Then you can use the following:

var stream = myImage.ToStream(ImageFormat.Gif);

Replace GIF with whatever format is appropriate for your scenario.

For someone who wants to understand this simple and fast:

First of all, this is not a syntax only to react. this is a syntax from ES6 called Spread syntax which iterate(merge, add..etc) array and object. read more about here

So answer to the question: let's imagine you have this tag:

<UserTag name="Supun" age="66" gender="male" />

and You do this:

const user = {
  "name"=>"Joe",
  "age"=>"50"      
  "test"=>"test-val"
};

<UserTag name="Supun" gender="male"  {...user} age="66" />

then the tag will equal this:

<UserTag name="Joe" gender="male" test="test-val" age="66" />

So what happened was when you use Spread syntax in a react tag it takes tag's attribute as object attributes which merge(replace if it exists) with the given object user. also, you might have noticed one thing that it only replaces before attribute, not after attributes. so in this example age remains as it is.

Hopes this helps :)

This works to take out the \n (new line) off a item in a list it just takes the first item in string off

def remove_end(s):
    templist=[]
    for i in s:
        templist.append(i)
    return(templist[0])

Here is part of a line in my code that brought the warning up in NetBeans:

$page = (!empty($_GET['p'])) 

After much research and seeing how there are about a bazillion ways to filter this array, I found one that was simple. And my code works and NetBeans is happy:

$p = filter_input(INPUT_GET, 'p');
$page = (!empty($p))

I solved this problem. You can use Support library and ViewPager. If you don't need swiping by gesture you can disable swiping. So here is some code to improve my solution:

public class TestFragment extends Fragment{
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View v = inflater.inflate(R.layout.frag, container, false);
    final ArrayList<Fragment> list = new ArrayList<Fragment>();

    list.add(new TrFrag());
    list.add(new TrFrag());
    list.add(new TrFrag());

    ViewPager pager = (ViewPager) v.findViewById(R.id.pager);
    pager.setAdapter(new FragmentPagerAdapter(getChildFragmentManager()) {
        @Override
        public Fragment getItem(int i) {
            return list.get(i);
        }

        @Override
        public int getCount() {
            return list.size();
        }
    });
    return v;
}
}

P.S.It is ugly code for test, but it improves that it is possible.

P.P.S Inside fragment ChildFragmentManager should be passed to ViewPagerAdapter

why not use flexbox ? so wrap them into another div like that

.flexContainer { _x000D_
   _x000D_
  margin: 2px 10px;_x000D_
  display: flex;_x000D_
} _x000D_
_x000D_
.left {_x000D_
  flex-basis : 30%;_x000D_
}_x000D_
_x000D_
.right {_x000D_
  flex-basis : 30%;_x000D_
}

<form id="new_production" class="simple_form new_production" novalidate="novalidate" method="post" action="/projects/1/productions" accept-charset="UTF-8">_x000D_
    <div style="margin:0;padding:0;display:inline">_x000D_
        <input type="hidden" value="?" name="utf8">_x000D_
        <input type="hidden" value="2UQCUU+tKiKKtEiDtLLNeDrfBDoHTUmz5Sl9+JRVjALat3hFM=" name="authenticity_token">_x000D_
    </div>_x000D_
    <div class="flexContainer">_x000D_
      <div class="left">Proj Name:</div>_x000D_
      <div class="right">must have a name</div>_x000D_
    </div>_x000D_
    <div class="input string required"> </div>_x000D_
 </form>

feel free to play with flex-basis percentage to get more customized space.

You can specify the HTML5 download attribute in your <a> tag.

<a href="http://example.com/archive.zip" download>Export</a>

https://developer.mozilla.org/en-US/docs/Web/HTML/Element/a#attr-download

Now, sometimes you already have less open, and you can't use cat on it. For example, you did a | less, and you can't just reopen a file, as that's actually a stream.

If all you need is to identify end of line, one easy way is to search for the last character on the line: /.$. The search will highlight the last character, even if it is a blank, making it easy to identify it.

That will only help with the end of line case. If you need other special characters, you can use the cat -vet solution above with marks and pipe:

• mark the top of the text you're interested in: ma
• go to the bottom of the text you're interested in and mark it, as well: mb
• go back to the mark a: 'a
• pipe from a to b through cat -vet and view the result in another less command: |bcat -vet | less

This will open another less process, which shows the result of running cat -vet on the text that lies between marks a and b.

If you want the whole thing, instead, do g|$cat -vet | less, to go to the first line and filter all lines through cat.

The advantage of this method over less options is that it does not mess with the output you see on the screen.

One would think that eight years after this question was originally posted, less would have that feature... But I can't even see a feature request for it on https://github.com/gwsw/less/issues

With Java 8 in picture, jcmd is the preferred approach.

jcmd <PID> Thread.print

Following is the snippet from Oracle documentation :

The release of JDK 8 introduced Java Mission Control, Java Flight Recorder, and jcmd utility for diagnosing problems with JVM and Java applications. It is suggested to use the latest utility, jcmd instead of the previous jstack utility for enhanced diagnostics and reduced performance overhead.

However, shipping this with the application may be licensing implications which I am not sure.

And here is the one liner:

$("<li><div class='bar'>bla</div></li>").find("li").attr("id","1234").end().appendTo("body")

But I'm wondering why you would like to add the "id" attribute at a later stage rather than injecting it directly in the template.

list(df.columns)

This gives you the list of column names of a data frame df.

Update - I verified the below works. Maybe the creation of your JArray isn't quite right.

[TestMethod]
    public void TestJson()
    {
        var jsonString = @"{""trends"": [
              {
                ""name"": ""Croke Park II"",
                ""url"": ""http://twitter.com/search?q=%22Croke+Park+II%22"",
                ""promoted_content"": null,
                ""query"": ""%22Croke+Park+II%22"",
                ""events"": null
              },
              {
                ""name"": ""Siptu"",
                ""url"": ""http://twitter.com/search?q=Siptu"",
                ""promoted_content"": null,
                ""query"": ""Siptu"",
                ""events"": null
              },
              {
                ""name"": ""#HNCJ"",
                ""url"": ""http://twitter.com/search?q=%23HNCJ"",
                ""promoted_content"": null,
                ""query"": ""%23HNCJ"",
                ""events"": null
              },
              {
                ""name"": ""Boston"",
                ""url"": ""http://twitter.com/search?q=Boston"",
                ""promoted_content"": null,
                ""query"": ""Boston"",
                ""events"": null
              },
              {
                ""name"": ""#prayforboston"",
                ""url"": ""http://twitter.com/search?q=%23prayforboston"",
                ""promoted_content"": null,
                ""query"": ""%23prayforboston"",
                ""events"": null
              },
              {
                ""name"": ""#TheMrsCarterShow"",
                ""url"": ""http://twitter.com/search?q=%23TheMrsCarterShow"",
                ""promoted_content"": null,
                ""query"": ""%23TheMrsCarterShow"",
                ""events"": null
              },
              {
                ""name"": ""#Raw"",
                ""url"": ""http://twitter.com/search?q=%23Raw"",
                ""promoted_content"": null,
                ""query"": ""%23Raw"",
                ""events"": null
              },
              {
                ""name"": ""Iran"",
                ""url"": ""http://twitter.com/search?q=Iran"",
                ""promoted_content"": null,
                ""query"": ""Iran"",
                ""events"": null
              },
              {
                ""name"": ""#gaa"",
                ""url"": ""http://twitter.com/search?q=%23gaa"",
                ""promoted_content"": null,
                ""query"": ""gaa"",
                ""events"": null
              },
              {
                ""name"": ""Facebook"",
                ""url"": ""http://twitter.com/search?q=Facebook"",
                ""promoted_content"": null,
                ""query"": ""Facebook"",
                ""events"": null
              }]}";

        var twitterObject = JToken.Parse(jsonString);
        var trendsArray = twitterObject.Children<JProperty>().FirstOrDefault(x => x.Name == "trends").Value;


        foreach (var item in trendsArray.Children())
        {
            var itemProperties = item.Children<JProperty>();
            //you could do a foreach or a linq here depending on what you need to do exactly with the value
            var myElement = itemProperties.FirstOrDefault(x => x.Name == "url");
            var myElementValue = myElement.Value; ////This is a JValue type
        }
    }

So call Children on your JArray to get each JObject in JArray. Call Children on each JObject to access the objects properties.

foreach(var item in yourJArray.Children())
{
    var itemProperties = item.Children<JProperty>();
    //you could do a foreach or a linq here depending on what you need to do exactly with the value
    var myElement = itemProperties.FirstOrDefault(x => x.Name == "url");
    var myElementValue = myElement.Value; ////This is a JValue type
}

Read the javadoc: Map<K, V>.forEach() expects a BiConsumer<? super K,? super V> as argument, and the signature of the BiConsumer<T, U> abstract method is accept(T t, U u).

So you should pass it a lambda expression that takes two inputs as argument: the key and the value:

map.forEach((key, value) -> {
    System.out.println("Key : " + key + " Value : " + value);
});

Your code would work if you called forEach() on the entry set of the map, not on the map itself:

map.entrySet().forEach(entry -> {
    System.out.println("Key : " + entry.getKey() + " Value : " + entry.getValue());
}); 

You need to give a function to be called after the time delay as the second argument to after:

after(delay_ms, callback=None, *args)

Registers an alarm callback that is called after a given time.

So what you really want to do is this:

tiles_letter = ['a', 'b', 'c', 'd', 'e']

def add_letter():
    rand = random.choice(tiles_letter)
    tile_frame = Label(frame, text=rand)
    tile_frame.pack()
    root.after(500, add_letter)
    tiles_letter.remove(rand)  # remove that tile from list of tiles


root.after(0, add_letter)  # add_letter will run as soon as the mainloop starts.
root.mainloop()

You also need to schedule the function to be called again by repeating the call to after inside the callback function, since after only executes the given function once. This is also noted in the documentation:

The callback is only called once for each call to this method. To keep calling the callback, you need to reregister the callback inside itself

Note that your example will throw an exception as soon as you've exhausted all the entries in tiles_letter, so you need to change your logic to handle that case whichever way you want. The simplest thing would be to add a check at the beginning of add_letter to make sure the list isn't empty, and just return if it is:

def add_letter():
    if not tiles_letter:
        return
    rand = random.choice(tiles_letter)
    tile_frame = Label(frame, text=rand)
    tile_frame.pack()
    root.after(500, add_letter)
    tiles_letter.remove(rand)  # remove that tile from list of tiles

Live-Demo: repl.it

Manually edit .sln file

This method is entirely aimed at renaming the directory for the project, as viewed in Windows Explorer.

This method does not suffer from the problems in the Remove/add project file method below (references disappearing), but it can result in problems if your project is under source control (see notes below). This is why step 2 (backup) is so important.

1. Close Visual Studio.
2. Create a backup of your .sln file (you can always roll back).
3. Imagine you want to rename directory Project1 to Project2.
4. If not using source control, rename the folder from Project1 to Project2 using Windows Explorer.
5. If using source control, rename the folder from Project1 to Project2 using the functions supplied by source control. This preserves the history of the file. For example, with TortoiseSVN, right click on the file, select TortoiseSVN .. Rename.
6. In the .sln file, edit all instances of Project1 to be Project2, using a text editor like NotePad.
7. Restart Visual Studio, and everything will work as before, but with the project in a different directory.

You can also see renaming solution manually or post which describes this manual process.

Advantages

• You can make the directory within Windows Explorer match the project name within the solution.
• This method does not remove any references from other projects to this file (an advantage over the Remove/add project file method, see my other answer below).

Warnings

• It's important to back everything up into a .zip file before renaming anything, as this method can create issues with source control.
• If your project is under source control, it may create issues if you rename files or directories outside of source control (using Windows Explorer). Its preferable to rename the file using the source control framework itself, if you can, to preserve the history of that file (check out the context menu on a right click - it may have a function to rename the file).

Update 2014-11-02

ReSharper has added an automated method for achieving the same result as the manual method above. If the namespace is underlined with a squiggly blue line, click on the action pyramid icon to either:

• Rename the namespace to match the directory name in Windows Explorer, or;
• Rename the directory in Windows Explorer to match the namespace.

In the second case, the final word defines the new directory name in Windows Explorer, e.g. if we changed the namespace to ViewModel2, it would offer to move the file to folder ViewModel2.

However, this will not necessarily update files in source control, so you may still have to use the manual method.

Update 2018-01-31

Tested with Visual Studio 2008, 2010, 2012, 2013, 2015, 2017 Update 1, 2, 3, 4, 5.

Update 2020-05-02

Tested with Visual Studio 2019.

Here is an implementation without using jQuery at all -
http://thezillion.wordpress.com/2012/09/27/javascript-draggable-2-no-jquery

Embed the JS file (http://zillionhost.xtreemhost.com/tzdragg/tzdragg.js) in your HTML code, and put the following code -

<script>
win.onload = function(){
 tzdragg.drag('elem1, elem2, ..... elemn');
 // ^ IDs of the draggable elements separated by a comma.
}
</script>

And the code is also easy to learn.
http://thezillion.wordpress.com/2012/08/29/javascript-draggable-no-jquery

You can use IP Webcam, or perhaps use DLNA. For example Samsung devices come with an app called AllShare which can share and access DLNA enabled devices on the network. I think IP Webcam is your best bet, though. You should be able to open the stream it creates using MX Video player or something like that.

You can optionally actually use the get method of a dict:

x = {i<100: -1, -10<=i<=10: 0, i>100: 1}.get(True, 2)

You don't need the get method if one of the keys is guaranteed to evaluate to True:

x = {i<0: -1, i==0: 0, i>0: 1}[True]

At most one of the keys should ideally evaluate to True. If more than one key evaluates to True, the results could seem unpredictable.

Getting EXIF data from a JPEG image involves:

1. Seeking to the JPEG markers which mentions the beginning of the EXIF data,. e.g. normally oxFFE1 is the marker inserted while encoding EXIF data, which is a APPlication segment, where EXIF data goes.
2. Parse all the data from say 0xFFE1 to 0xFFE2 . This data would be stream of bytes, in the JPEG encoded file.
3. ASCII equivalent of these bytes would contain various information related to Image Date, Camera Model Name, Exposure etc...

first you remove this thing in your project .. its is in build.gradle(module:app) then build your app now you project show the actual error and you find what is your actual problem is .. and after you find actual problem again paste it where its is belong to

allprojects { gradle.projectsEvaluated {

    tasks.withType(JavaCompile)

{ options.encoding = 'UTF-8'

        options.compilerArgs

<< "-Xlint:unchecked" << "-Xlint:deprecation"}]}}

This happens when saving an object when Hibernate thinks it needs to save an object that is associated with the one you are saving.

I had this problem and did not want to save changes to the referenced object so I wanted the cascade type to be NONE.

The trick is to ensure that the ID and VERSION in the referenced object is set so that Hibernate does not think that the referenced object is a new object that needs saving. This worked for me.

Look through all of the relationships in the class you are saving to work out the associated objects (and the associated objects of the associated objects) and ensure that the ID and VERSION is set in all objects of the object tree.

In my case it doesn't work, even with __DIR__ or getcwd() it keeps picking the wrong path, I solved by defining a costant in every file I need with the absolute base path of the project:

if(!defined('THISBASEPATH')){ define('THISBASEPATH', '/mypath/'); }
require_once THISBASEPATH.'cache/crud.php';
/*every other require_once you need*/

I have MAMP with php 5.4.10 and my folder hierarchy is basilar:

q.php 
w.php 
e.php 
r.php 
cache/a.php 
cache/b.php 
setting/a.php 
setting/b.php

....

There's always the hardware route. Purchase two USB to serial converters, and connect them via a NULL modem.

Pro tips: 1) Windows may assign new COM ports to the adapters after every device sleep or reboot. 2) The market leaders in chips for USB to serial are Prolific and FTDI. Both companies are battling knockoffs, and may be blocked in future official Windows drivers. The Linux drivers however work fine with the clones.

you can use crypto-js javaScript library of crypto standards, there is easiest way to generate sha256 or sha512

const SHA256 = require("crypto-js/sha256");
const SHA512 = require("crypto-js/sha512");

let password = "hello"
let hash_256 = SHA256 (password).toString();
let hash_512 = SHA512 (password).toString();

Add new socket connections to an array and then when you want to close all - loop through them and disconnect. (server side)

var socketlist = [];

   io.sockets.on('connection', function (socket) {
        socketlist.push(socket);  
        //...other code for connection here..
   });


    //close remote sockets
    socketlist.forEach(function(socket) {        
        socket.disconnect();                      
    });    

You can zip the list with itself sans the first element:

a = [5, 7, 11, 4, 5]

for previous, current in zip(a, a[1:]):
    print(previous, current)

This works even if your list has no elements or only 1 element (in which case zip returns an empty iterable and the code in the for loop never executes). It doesn't work on generators, only sequences (tuple, list, str, etc).

In Swift 4 I tried all of this previously, but runs only:

@IBAction func myButton(sender: AnyObject) {
   sender.setTitle("This is example text one", for:[])
   sender.setTitle("This is example text two", for: .normal)
}

In order to access the data from a ReadableStream you need to call one of the conversion methods (docs available here).

As an example:

fetch('https://jsonplaceholder.typicode.com/posts/1')
  .then(function(response) {
    // The response is a Response instance.
    // You parse the data into a useable format using `.json()`
    return response.json();
  }).then(function(data) {
    // `data` is the parsed version of the JSON returned from the above endpoint.
    console.log(data);  // { "userId": 1, "id": 1, "title": "...", "body": "..." }
  });

EDIT: If your data return type is not JSON or you don't want JSON then use text()

As an example:

fetch('https://jsonplaceholder.typicode.com/posts/1')
  .then(function(response) {
    return response.text();
  }).then(function(data) {
    console.log(data); // this will be a string
  });

Hope this helps clear things up.

First, I can give you the answer for one table:

The trouble with all these INTO OUTFILE or --tab=tmpfile (and -T/path/to/directory) answers is that it requires running mysqldump on the same server as the MySQL server, and having those access rights.

My solution was simply to use mysql (not mysqldump) with the -B parameter, inline the SELECT statement with -e, then massage the ASCII output with sed, and wind up with CSV including a header field row:

Example:

 mysql -B -u username -p password database -h dbhost -e "SELECT * FROM accounts;" \
 | sed "s/\"/\"\"/g;s/'/\'/;s/\t/\",\"/g;s/^/\"/;s/$/\"/;s/\n//g"

"id","login","password","folder","email" "8","mariana","xxxxxxxxxx","mariana","" "3","squaredesign","xxxxxxxxxxxxxxxxx","squaredesign","[email protected]" "4","miedziak","xxxxxxxxxx","miedziak","[email protected]" "5","Sarko","xxxxxxxxx","Sarko","" "6","Logitrans Poland","xxxxxxxxxxxxxx","LogitransPoland","" "7","Amos","xxxxxxxxxxxxxxxxxxxx","Amos","" "9","Annabelle","xxxxxxxxxxxxxxxx","Annabelle","" "11","Brandfathers and Sons","xxxxxxxxxxxxxxxxx","BrandfathersAndSons","" "12","Imagine Group","xxxxxxxxxxxxxxxx","ImagineGroup","" "13","EduSquare.pl","xxxxxxxxxxxxxxxxx","EduSquare.pl","" "101","tmp","xxxxxxxxxxxxxxxxxxxxx","_","[email protected]"

Add a > outfile.csv at the end of that one-liner, to get your CSV file for that table.

Next, get a list of all your tables with

mysql -u username -ppassword dbname -sN -e "SHOW TABLES;"

From there, it's only one more step to make a loop, for example, in the Bash shell to iterate over those tables:

 for tb in $(mysql -u username -ppassword dbname -sN -e "SHOW TABLES;"); do
     echo .....;
 done

Between the do and ; done insert the long command I wrote in Part 1 above, but substitute your tablename with $tb instead.

A few comments:

import sun.misc.*; Don't do this. It is non-standard and not guaranteed to be the same between implementations. There are other libraries with Base64 conversion available.

byte[] encVal = c.doFinal(Data.getBytes()); You are relying on the default character encoding here. Always specify what character encoding you are using: byte[] encVal = c.doFinal(Data.getBytes("UTF-8")); Defaults might be different in different places.

As @thegrinner pointed out, you need to explicitly check the length of your byte arrays. If there is a discrepancy, then compare them byte by byte to see where the difference is creeping in.

It sounds like you need to set up passwordless sudo. Try:

%admin ALL=(ALL) NOPASSWD: osascript myscript.scpt

Also comment out the following line (in /etc/sudoers via visudo), if it is there:

Defaults    requiretty

In addition to Felix's answer,

href={`/posts/${posts.id}`}

would work well too. This is nice because it's all in one string.

I made a class to manage this issue. This class set different margins for the items inside the recyclerView: only the first row will have a top margin and only the first column will have left margin.

public class RecyclerViewMargin extends RecyclerView.ItemDecoration {
private final int columns;
private int margin;

/**
 * constructor
 * @param margin desirable margin size in px between the views in the recyclerView
 * @param columns number of columns of the RecyclerView
 */
public RecyclerViewMargin(@IntRange(from=0)int margin ,@IntRange(from=0) int columns ) {
    this.margin = margin;
    this.columns=columns;

}

/**
 * Set different margins for the items inside the recyclerView: no top margin for the first row
 * and no left margin for the first column.
 */
@Override
public void getItemOffsets(Rect outRect, View view,
                           RecyclerView parent, RecyclerView.State state) {

    int position = parent.getChildLayoutPosition(view);
    //set right margin to all
    outRect.right = margin;
    //set bottom margin to all
    outRect.bottom = margin;
    //we only add top margin to the first row
    if (position <columns) {
        outRect.top = margin;
    }
    //add left margin only to the first column
    if(position%columns==0){
        outRect.left = margin;
        }
    }
}

you can set it in your recyclerview this way

 RecyclerViewMargin decoration = new RecyclerViewMargin(itemMargin, numColumns);
 recyclerView.addItemDecoration(decoration);

#include <iostrema>

int main(){
    int32_t maxSigned = -1U >> 1;
    cout << maxSigned << '\n';
    return 0;
}

It might be architecture dependent but it does work at least in my setup.

Each python object has a __dict__ atttribute which is a dictionary containing all other attributes. e.g. when you type self.attr python is actually doing self.__dict__['attr']. As you can imagine using a dictionary to store attribute takes some extra space & time for accessing it.

However, when you use __slots__, any object created for that class won't have a __dict__ attribute. Instead, all attribute access is done directly via pointers.

So if want a C style structure rather than a full fledged class you can use __slots__ for compacting size of the objects & reducing attribute access time. A good example is a Point class containing attributes x & y. If you are going to have a lot of points, you can try using __slots__ in order to conserve some memory.

Use this:

#include <stdlib.h>
#include <string.h>

int main()
{
    const char *d1 = "11";
    int d1int = atoi(d1);
    printf("d1 = %d\n", d1);
    return 0;
}

etc.

The reason why you don't have to load a certificate locally is that you've explicitly chosen not to verify the certificate, with this trust manager that trusts all certificates.

The traffic will still be encrypted, but you're opening the connection to Man-In-The-Middle attacks: you're communicating secretly with someone, you're just not sure whether it's the server you expect, or a possible attacker.

If your server certificate comes from a well-known CA, part of the default bundle of CA certificates bundled with the JRE (usually cacerts file, see JSSE Reference guide), you can just use the default trust manager, you don't have to set anything here.

If you have a specific certificate (self-signed or from your own CA), you can use the default trust manager or perhaps one initialised with a specific truststore, but you'll have to import the certificate explicitly in your trust store (after independent verification), as described in this answer. You may also be interested in this answer.

I would use a bound service to do that and communicate with it by implementing a listener in my activity. So if your app implements myServiceListener, you can register it as a listener in your service after you have bound with it, call listener.onUpdateUI from your bound service and update your UI in there!

The question asks how to check if a variable is an empty string and the best answers are already given for that.

But I landed here after a period passed programming in PHP, and I was actually searching for a check like the empty function in PHP working in a Bash shell.

After reading the answers I realized I was not thinking properly in Bash, but anyhow in that moment a function like empty in PHP would have been soooo handy in my Bash code.

As I think this can happen to others, I decided to convert the PHP empty function in Bash.

According to the PHP manual:

a variable is considered empty if it doesn't exist or if its value is one of the following:

• "" (an empty string)
• 0 (0 as an integer)
• 0.0 (0 as a float)
• "0" (0 as a string)
• an empty array
• a variable declared, but without a value

Of course the null and false cases cannot be converted in bash, so they are omitted.

function empty
{
    local var="$1"

    # Return true if:
    # 1.    var is a null string ("" as empty string)
    # 2.    a non set variable is passed
    # 3.    a declared variable or array but without a value is passed
    # 4.    an empty array is passed
    if test -z "$var"
    then
        [[ $( echo "1" ) ]]
        return

    # Return true if var is zero (0 as an integer or "0" as a string)
    elif [ "$var" == 0 2> /dev/null ]
    then
        [[ $( echo "1" ) ]]
        return

    # Return true if var is 0.0 (0 as a float)
    elif [ "$var" == 0.0 2> /dev/null ]
    then
        [[ $( echo "1" ) ]]
        return
    fi

    [[ $( echo "" ) ]]
}

Example of usage:

if empty "${var}"
    then
        echo "empty"
    else
        echo "not empty"
fi

Demo:
The following snippet:

#!/bin/bash

vars=(
    ""
    0
    0.0
    "0"
    1
    "string"
    " "
)

for (( i=0; i<${#vars[@]}; i++ ))
do
    var="${vars[$i]}"

    if empty "${var}"
        then
            what="empty"
        else
            what="not empty"
    fi
    echo "VAR \"$var\" is $what"
done

exit

outputs:

VAR "" is empty
VAR "0" is empty
VAR "0.0" is empty
VAR "0" is empty
VAR "1" is not empty
VAR "string" is not empty
VAR " " is not empty

Having said that in a Bash logic the checks on zero in this function can cause side problems imho, anyone using this function should evaluate this risk and maybe decide to cut those checks off leaving only the first one.

You simply select dates that are higher than the current time minus 1 day.

SELECT * FROM news WHERE date >= now() - INTERVAL 1 DAY;

There is a nice writeup here.

Configuring this in nginx/apache is a mistake.
If you are using a hosting company you can't configure the edge.
If you are using Docker, the app should be self contained.

Note that some examples use connectHandlers but this only sets headers on the doc. Using rawConnectHandlers applies to all assets served (fonts/css/etc).

  // HSTS only the document - don't function over http.  
  // Make sure you want this as it won't go away for 30 days.
  WebApp.connectHandlers.use(function(req, res, next) {
    res.setHeader('Strict-Transport-Security', 'max-age=2592000; includeSubDomains'); // 2592000s / 30 days
    next();
  });

  // CORS all assets served (fonts/etc)
  WebApp.rawConnectHandlers.use(function(req, res, next) {
    res.setHeader('Access-Control-Allow-Origin', '*');
    return next();
  });

This would be a good time to look at browser policy like framing, etc.

You could try using UpdateVersion by Matt Griffith. It's quite old now, but works well. To use it, you simply need to setup a pre-build event which points at your AssemblyInfo.cs file, and the application will update the version numbers accordingly, as per the command line arguments.

As the application is open-source, I've also created a version to increment the version number using the format (Major version).(Minor version).([year][dayofyear]).(increment). I've put the code for my modified version of the UpdateVersion application on GitHub: https://github.com/munr/UpdateVersion

(FOMOsapiens).

If you check math Logit function, it converts real space from [0,1] interval to infinity [-inf, inf].

Sigmoid and softmax will do exactly the opposite thing. They will convert the [-inf, inf] real space to [0, 1] real space.

This is why, in machine learning we may use logit before sigmoid and softmax function (since they match).

And this is why "we may call" anything in machine learning that goes in front of sigmoid or softmax function the logit.

Here is J. Hinton video using this term.

A comment to jarijira

Well I have had many issues with .html and .empty() methods for inputs o. If the id represents an input and not another type of html selector like

or use the .val() function to manipulate.

For example: this is the proper way to manipulate input values

<textarea class="form-control" id="someInput"></textarea>

$(document).ready(function () {
     var newVal='test'
     $('#someInput').val('') //clear input value
     $('#someInput').val(newVal) //override w/ the new value
     $('#someInput').val('test2) 
     newVal= $('#someInput').val(newVal) //get input value

}

For improper, but sometimes works For example: this is the proper way to manipulate input values

<textarea class="form-control" id="someInput"></textarea>

$(document).ready(function () {
     var newVal='test'
     $('#someInput').html('') //clear input value
     $('#someInput').empty() //clear html inside of the id
     $('#someInput').html(newVal) //override the html inside of text area w/ string could be '<div>test3</div>
     really overriding with a string manipulates the value, but this is not the best practice as you do not put things besides strings or values inside of an input. 
     newVal= $('#someInput').val(newVal) //get input value

}

An issue that I had was I was using the $getJson method and I was indeed able to use .html calls to manipulate my inputs. However, whenever I had an error or fail on the getJSON I could no longer change my inputs using the .clear and .html calls. I could still return the .val(). After some experimentation and research I discovered that you should only use the .val() function to make changes to input fields.

If you are using java technology(Servlet/JSP) for making web application you will probably use Apache Tomcat. However, if you are using other technologies like Perl, PHP or ruby, its better(easier) to use Apache HTTP Server.

Here's a possibile solution (in Python):

Let's say you have a notebook with a file name, call it Notebook.ipynb. You are currently working in that notebook, and want to access other folders and files around it. Here's it's path:

import os
notebook_path = os.path.abspath("Notebook.ipynb")

In other words, just use the os module, and get the absolute path of your notebook (it's a file, too!). From there, use the os module and your path to navigate.

For example, if your train.csv is in a folder called 'Datasets', and the notebook is sitting right next to that folder, you could get the data like this:

train_csv = os.path.join(os.path.dirname(notebook_path), "Datasets/train.csv")
with open(train_csv) as file:
    #....etc

The takeaway is that the notebook has a file name, and as long as your language supports pathname manipulations (e.g. the os module in Python) you can likely use the notebook filename.

Lastly, the reason your code fails is probably because you're either trying to access local files (like your Mac's 'Downloads' folder) when you're working in an online Notebook (like Kaggle, which hosts your environment for you, online and away from your Mac), or you moved or deleted something in that path. This is what the os module in Python is meant to do; it will find the file's path whether it's on your Mac or in a Kaggle server.

This answer is for the use case when you simply want to test the bool? in a condition. It can also be used to get a normal bool. It is an alternative I personnaly find easier to read than the coalescing operator ??.

If you want to test a condition, you can use this

bool? nullableBool = someFunction();
if(nullableBool == true)
{
    //Do stuff
}

The above if will be true only if the bool? is true.

You can also use this to assign a regular bool from a bool?

bool? nullableBool = someFunction();
bool regularBool = nullableBool == true;

witch is the same as

bool? nullableBool = someFunction();
bool regularBool = nullableBool ?? false;

You can also use "bold" and "italic" instead of "normal" here. "Verdana" can be used for fontname..

But another question is this: How do you set the color of the text You write?

Answer: You use the turtle.color() method or turtle.fillcolor(), like this:

turtle.fillcolor("blue")

or just:

turtle.color("orange")

These calls must come before the turtle.write() command..

It worked for me. No problems on using javascript:history.go(-1) on Google Chrome.

1. To use it, ensure that you should have history on that tab.
2. Add javascript:history.go(-1) on the enter URL space.
3. It shall work for a few seconds.

Copy Pasting @Lichtamberg's comments to gotoalberto's answer

Works also for Java 1.8:

# in ~/.zshrc and ~/.bashrc

export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0_92.jdk/Contents/Home 
export PATH=$JAVA_HOME/bin:$PATH 

This fixed my issue on java 8.

ID=$(docker build -t creack/node .) doesn't work for me since ID will contain the output from the build.

SO I'm using this small BASH script:

#!/bin/bash

set -o pipefail

IMAGE=...your image name...
VERSION=...the version...

docker build -t ${IMAGE}:${VERSION} . | tee build.log || exit 1
ID=$(tail -1 build.log | awk '{print $3;}')
docker tag $ID ${IMAGE}:latest

docker images | grep ${IMAGE}

docker run --rm ${IMAGE}:latest /opt/java7/bin/java -version

Adding mode:'no-cors' to the request header guarantees that no response will be available in the response

Adding a "non standard" header, line 'access-control-allow-origin' will trigger a OPTIONS preflight request, which your server must handle correctly in order for the POST request to even be sent

You're also doing fetch wrong ... fetch returns a "promise" for a Response object which has promise creators for json, text, etc. depending on the content type...

In short, if your server side handles CORS correctly (which from your comment suggests it does) the following should work

function send(){
    var myVar = {"id" : 1};
    console.log("tuleb siia", document.getElementById('saada').value);
    fetch("http://localhost:3000", {
        method: "POST",
        headers: {
            "Content-Type": "text/plain"
        },
        body: JSON.stringify(myVar)
    }).then(function(response) {
        return response.json();
    }).then(function(muutuja){
        document.getElementById('väljund').innerHTML = JSON.stringify(muutuja);
    });
}

however, since your code isn't really interested in JSON (it stringifies the object after all) - it's simpler to do

function send(){
    var myVar = {"id" : 1};
    console.log("tuleb siia", document.getElementById('saada').value);
    fetch("http://localhost:3000", {
        method: "POST",
        headers: {
            "Content-Type": "text/plain"
        },
        body: JSON.stringify(myVar)
    }).then(function(response) {
        return response.text();
    }).then(function(muutuja){
        document.getElementById('väljund').innerHTML = muutuja;
    });
}

You must declare int add(int a, int b); (note to the semicolon) in a header file and include the file into both files. Including it into Main.c will tell compiler how the function should be called. Including into the second file will allow you to check that declaration is valid (compiler would complain if declaration and implementation were not matched).

Then you must compile both *.c files into one project. Details are compiler-dependent.

#father {
   position: relative;
}

#son1 {
   position: absolute;
   top: 0;
}

#son2 {
   position: absolute;
   bottom: 0;
}

This works because position: absolute means something like "use top, right, bottom, left to position yourself in relation to the nearest ancestor who has position: absolute or position: relative."

So we make #father have position: relative, and the children have position: absolute, then use top and bottom to position the children.

You can use Named Sections.

_Layout.cshtml

<head>
    <script type="text/javascript" src="@Url.Content("/Scripts/jquery-1.6.2.min.js")"></script>
    @RenderSection("JavaScript", required: false)
</head>

_SomeView.cshtml

@section JavaScript
{
   <script type="text/javascript" src="@Url.Content("/Scripts/SomeScript.js")"></script>
   <script type="text/javascript" src="@Url.Content("/Scripts/AnotherScript.js")"></script>
}

The most efficient selector you can use is an attribute selector.

 input[name="btnPage"]:hover {/*your css here*/}

Here's a live demo: http://tinkerbin.com/3G6B93Cb

Use NupenGL Nuget package. It is actively updated and works with VS 2013 and 2015, whereas Freeglut Nuget package works with earlier versions of Visual Studio only (as of 10/14/2015).

Also, follow this blog post for easy instructions on working with OpenGL and Glut in VS.

In .NET 4 you don't need the ToArray() call - string.Join is overloaded to accept IEnumerable<T> or just IEnumerable<string>.

There are potentially more efficient ways of doing it before .NET 4, but do you really need them? Is this actually a bottleneck in your code?

You could iterate over the list, work out the final size, allocate a StringBuilder of exactly the right size, then do the join yourself. That would avoid the extra array being built for little reason - but it wouldn't save much time and it would be a lot more code.

The ? in the parameters is to denote an optional parameter. The Typescript compiler does not require this parameter to be filled in. See the code example below for more details:

// baz: number | undefined means: the second argument baz can be a number or undefined

// = undefined, is default parameter syntax, 
// if the parameter is not filled in it will default to undefined

// Although default JS behaviour is to set every non filled in argument to undefined 
// we need this default argument so that the typescript compiler
// doesn't require the second argument to be filled in
function fn1 (bar: string, baz: number | undefined = undefined) {
    // do stuff
}

// All the above code can be simplified using the ? operator after the parameter
// In other words fn1 and fn2 are equivalent in behaviour
function fn2 (bar: string, baz?: number) {
    // do stuff
}



fn2('foo', 3); // works
fn2('foo'); // works

fn2();
// Compile time error: Expected 1-2 arguments, but got 0
// An argument for 'bar' was not provided.


fn1('foo', 3); // works
fn1('foo'); // works

fn1();
// Compile time error: Expected 1-2 arguments, but got 0
// An argument for 'bar' was not provided.

import org.apache.http.client.HttpClient;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;

...

    // set the connection timeout value to 30 seconds (30000 milliseconds)
    final HttpParams httpParams = new BasicHttpParams();
    HttpConnectionParams.setConnectionTimeout(httpParams, 30000);
    client = new DefaultHttpClient(httpParams);

An example Extension class to simplify this: -

internal static class String
{
    public static string TrimEndsCharacter(this string target, char character) => target?.TrimLeadingCharacter(character).TrimTrailingCharacter(character);
    public static string TrimLeadingCharacter(this string target, char character) => Match(target?.Substring(0, 1), character) ? target.Remove(0,1) : target;
    public static string TrimTrailingCharacter(this string target, char character) => Match(target?.Substring(target.Length - 1, 1), character) ? target.Substring(0, target.Length - 1) : target;

    private static bool Match(string value, char character) => !string.IsNullOrEmpty(value) && value[0] == character;
}

Usage

"!Something!".TrimLeadingCharacter('X'); // Result '!Something!' (No Change)
"!Something!".TrimTrailingCharacter('S'); // Result '!Something!' (No Change)
"!Something!".TrimEndsCharacter('g'); // Result '!Something!' (No Change)

"!Something!".TrimLeadingCharacter('!'); // Result 'Something!' (1st Character removed)
"!Something!".TrimTrailingCharacter('!'); // Result '!Something' (Last Character removed)
"!Something!".TrimEndsCharacter('!'); // Result 'Something'  (End Characters removed)

"!!Something!!".TrimLeadingCharacter('!'); // Result '!Something!!' (Only 1st instance removed)
"!!Something!!".TrimTrailingCharacter('!'); // Result '!!Something!' (Only Last instance removed)
"!!Something!!".TrimEndsCharacter('!'); // Result '!Something!'  (Only End instances removed)

I'm guessing you want the output of the ls -al command, so in bash, you'd have something like:

LS=`ls -la`

if [ -n "$LS" ]; then
  echo "there are files"
else
  echo "no files found"
fi

To access the elements in the array, use array notation: $product['prodname']

$product->prodname is object notation, which can only be used to access object attributes and methods.

Based on cletus's answer you may create new extension.

public static class StringExtensions
{        
    public static bool IsAlphaNumeric(this string str)
    {
        if (string.IsNullOrEmpty(str))
            return false;

        Regex r = new Regex("^[a-zA-Z0-9]*$");
        return r.IsMatch(str);
    }
}

Found this thread looking for a solution to my problem. Mine required a different solution that I figured out that might be of use to others. My macro was deleting rows, shifting up, and copying rows to another worksheet. Memory usage was exploding to several gigs and causing "out of memory" after processing around only 4000 records. What solved it for me?

application.screenupdating = false

Added that at the beginning of my code (be sure to make it true again, at the end) I knew that would make it run faster, which it did.. but had no idea about the memory thing.

After making this small change the memory usage didn't exceed 135 mb. Why did that work? No idea really. But it's worth a shot and might apply to you.

Assuming they always exist and are not part of your data, this will work:

declare @string varchar(8000) = '23;chair,red [$3]'
select substring(@string, charindex(';', @string) + 1, charindex(' [', @string) - charindex(';', @string) - 1)

You have to placed this code in application.rb

config.action_dispatch.default_headers = {
        'Access-Control-Allow-Origin' => '*',
        'Access-Control-Request-Method' => %w{GET POST OPTIONS}.join(",")
}

Use Split-Path

$filePath = "C:\PS\Test.Documents\myTestFile.txt";
$fileName = (Split-Path -Path $filePath -Leaf).Split(".")[0];
$extension = (Split-Path -Path $filePath -Leaf).Split(".")[1];