Download Microsoft Rdlc Report Designer for Visual Studio from this link. https://marketplace.visualstudio.com/items?itemName=ProBITools.MicrosoftRdlcReportDesignerforVisualStudio-18001
Microsoft explain the steps in details:
The following steps summarizes the above article.
Adding the Report Viewer control to a new web project:
Create a new ASP.NET Empty Web Site or open an existing ASP.NET project.
Install the Report Viewer control NuGet package via the NuGet package manager console. From Visual Studio -> Tools -> NuGet Package Manager -> Package Manager Console
Install-Package Microsoft.ReportingServices.ReportViewerControl.WebForms
Add a new .aspx page to the project and register the Report Viewer control assembly for use within the page.
<%@ Register assembly="Microsoft.ReportViewer.WebForms, Version=15.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91" namespace="Microsoft.Reporting.WebForms" tagprefix="rsweb" %>
Add a ScriptManagerControl to the page.
Add the Report Viewer control to the page. The snippet below can be updated to reference a report hosted on a remote report server.
<rsweb:ReportViewer ID="ReportViewer1" runat="server" ProcessingMode="Remote">
<ServerReport ReportPath="" ReportServerUrl="" /></rsweb:ReportViewer>
The final page should look like the following.
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="Sample" %>
<%@ Register assembly="Microsoft.ReportViewer.WebForms, Version=15.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91" namespace="Microsoft.Reporting.WebForms" tagprefix="rsweb" %>
<!DOCTYPE html>
<html xmlns="https://www.w3.org/1999/xhtml">
<head runat="server">
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<title></title>
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager runat="server"></asp:ScriptManager>
<rsweb:ReportViewer ID="ReportViewer1" runat="server" ProcessingMode="Remote">
<ServerReport ReportServerUrl="https://AContosoDepartment/ReportServer" ReportPath="/LatestSales" />
</rsweb:ReportViewer>
</form>
</body>
It says what it means:
make your class non-static:
public class employee
{
NameValueCollection appSetting = ConfigurationManager.AppSettings;
}
or the member static:
public static class employee
{
static NameValueCollection appSetting = ConfigurationManager.AppSettings;
}
Just remove the fade class and if you want more animations to be perform on the Modal just use animate.css classes in your Modal.
Jon Skeets answer is right and has deserved my upvote, just adding this slightly different solution for completeness:
import static java.time.temporal.TemporalAdjusters.lastDayOfMonth;
LocalDate initial = LocalDate.of(2014, 2, 13);
LocalDate start = initial.withDayOfMonth(1);
LocalDate end = initial.with(lastDayOfMonth());
You can add the following lines to build.gradle
, **/*
excludes all the tests.
test {
exclude '**/*'
}
Tickcount is good, however i suggest running it 100 or 1000 times, and calculating an average. Not only makes it more measurable - in case of really fast/short functions, but helps dealing with some one-off effects caused by the overhead.
Remove all breakpoints and re-add them.
The best way to find the key for a particular value is to use key method that is available for a hash....
gender = {"MALE" => 1, "FEMALE" => 2}
gender.key(1) #=> MALE
I hope it solves your problem...
SELECT COALESCE(prereq, '') FROM test
Coalesce will return the first non-null argument passed to it from left to right. If all arguemnts are null, it'll return null, but we're forcing an empty string there, so no null values will be returned.
Also note that the COALESCE operator is supported in standard SQL. This is not the case of IFNULL. So it is a good practice to get use the former. Additionally, bear in mind that COALESCE supports more than 2 parameters and it will iterate over them until a non-null coincidence is found.
Your assignments are all nested within your conditional if blocks which means that there is potential for them to never be assigned.
At the top of your class, initialise them to 0 or some other value
Another solution: change margins. Depending on the siblings of the button, display
should be modified.
button {
display: block;
margin-left: auto;
margin-right: 0;
}
Is there a reason why you can't use the Excel ODBC connection to read and write to Excel? For example, I've used the following code to read from an Excel file row by row like a database:
private DataTable LoadExcelData(string fileName)
{
string Connection = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + fileName + ";Extended Properties=\"Excel 12.0;HDR=Yes;IMEX=1\";";
OleDbConnection con = new OleDbConnection(Connection);
OleDbCommand command = new OleDbCommand();
DataTable dt = new DataTable(); OleDbDataAdapter myCommand = new OleDbDataAdapter("select * from [Sheet1$] WHERE LastName <> '' ORDER BY LastName, FirstName", con);
myCommand.Fill(dt);
Console.WriteLine(dt.Rows.Count);
return dt;
}
You can write to the Excel "database" the same way. As you can see, you can select the version number to use so that you can downgrade Excel versions for the machine with Excel 2003. Actually, the same is true for using the Interop. You can use the lower version and it should work with Excel 2003 even though you only have the higher version on your development PC.
import datetime
import pytz
def convert_datetime_timezone(dt, tz1, tz2):
tz1 = pytz.timezone(tz1)
tz2 = pytz.timezone(tz2)
dt = datetime.datetime.strptime(dt,"%Y-%m-%d %H:%M:%S")
dt = tz1.localize(dt)
dt = dt.astimezone(tz2)
dt = dt.strftime("%Y-%m-%d %H:%M:%S")
return dt
-
dt
: date time stringtz1
: initial time zonetz2
: target time zone-
> convert_datetime_timezone("2017-05-13 14:56:32", "Europe/Berlin", "PST8PDT")
'2017-05-13 05:56:32'
> convert_datetime_timezone("2017-05-13 14:56:32", "Europe/Berlin", "UTC")
'2017-05-13 12:56:32'
-
> pytz.all_timezones[0:10]
['Africa/Abidjan',
'Africa/Accra',
'Africa/Addis_Ababa',
'Africa/Algiers',
'Africa/Asmara',
'Africa/Asmera',
'Africa/Bamako',
'Africa/Bangui',
'Africa/Banjul',
'Africa/Bissau']
import AVFoundation
var audioPlayer = AVAudioPlayer()
class GameScene: SKScene {
override func didMoveToView(view: SKView) {
let soundURL = NSBundle.mainBundle().URLForResource("04", withExtension: "mp3")
audioPlayer = AVAudioPlayer(contentsOfURL: soundURL, error: nil)
audioPlayer.play()
}
}
If you want to pass just the index.php ( no other php file will be passed to fastcgi ) to fastcgi in case you have routes like this in a framework like codeigniter
$route["/download.php"] = "controller/method";
location ~ index\.php$ {
fastcgi_pass 127.0.0.1:9000;
include fastcgi.conf;
}
Yes it can,but there can only be 1 public class inside any package as java compiler creates the .Class file which is of the same name as the Public class name therefore if their are more than 1 public class it would be difficult to select for compiler that what should be the name of Class file.
You can use borders for fixed colors.
borderTop: solid 15px black;
and for gradient background you can use:
box-sizing: border-box;
border-style: solid;
border-top: 0px;
border-left: 0px;
border-right: 0px;
border-image: linear-gradient(to right, red, blue) 100%;
border-image-slice: 1;
border-width: 18px;
Use the pathlib
module.
from pathlib import Path
path = Path("/here/your/path/file.txt")
print(path.parent)
Try this:
import os.path
print os.path.abspath(os.path.join(yourpath, os.pardir))
where yourpath
is the path you want the parent for.
Suppose constructors were inherited... then because every class eventually derives from Object, every class would end up with a parameterless constructor. That's a bad idea. What exactly would you expect:
FileInputStream stream = new FileInputStream();
to do?
Now potentially there should be a way of easily creating the "pass-through" constructors which are fairly common, but I don't think it should be the default. The parameters needed to construct a subclass are often different from those required by the superclass.
Here is something else interesting you can do. Define a function to call just before each ajax call. Also assign a function to call after each ajax call is complete. The first function will set the wait cursor and the second will clear it. They look like the following:
$(document).ajaxComplete(function(event, request, settings) {
$('*').css('cursor', 'default');
});
function waitCursor() {
$('*').css('cursor', 'progress');
}
First of all, never use a for in
loop to enumerate over an array. Never. Use good old for(var i = 0; i<arr.length; i++)
.
The reason behind this is the following: each object in JavaScript has a special field called prototype
. Everything you add to that field is going to be accessible on every object of that type. Suppose you want all arrays to have a cool new function called filter_0
that will filter zeroes out.
Array.prototype.filter_0 = function() {
var res = [];
for (var i = 0; i < this.length; i++) {
if (this[i] != 0) {
res.push(this[i]);
}
}
return res;
};
console.log([0, 5, 0, 3, 0, 1, 0].filter_0());
//prints [5,3,1]
This is a standard way to extend objects and add new methods. Lots of libraries do this.
However, let's look at how for in
works now:
var listeners = ["a", "b", "c"];
for (o in listeners) {
console.log(o);
}
//prints:
// 0
// 1
// 2
// filter_0
Do you see? It suddenly thinks filter_0 is another array index. Of course, it is not really a numeric index, but for in
enumerates through object fields, not just numeric indexes. So we're now enumerating through every numeric index and filter_0
. But filter_0
is not a field of any particular array object, every array object has this property now.
Luckily, all objects have a hasOwnProperty
method, which checks if this field really belongs to the object itself or if it is simply inherited from the prototype chain and thus belongs to all the objects of that type.
for (o in listeners) {
if (listeners.hasOwnProperty(o)) {
console.log(o);
}
}
//prints:
// 0
// 1
// 2
Note, that although this code works as expected for arrays, you should never, never, use for in
and for each in
for arrays. Remember that for in
enumerates the fields of an object, not array indexes or values.
var listeners = ["a", "b", "c"];
listeners.happy = "Happy debugging";
for (o in listeners) {
if (listeners.hasOwnProperty(o)) {
console.log(o);
}
}
//prints:
// 0
// 1
// 2
// happy
You could use str.split
to do this.
s = "<alpha.Customer[cus_Y4o9qMEZAugtnW] active_card=<alpha.AlphaObject[card]\
...>, created=1324336085, description='Customer for My Test App',\
livemode=False>"
val = s.split('[', 1)[1].split(']')[0]
Then we have:
>>> val
'cus_Y4o9qMEZAugtnW'
Though the question was asked 5.5 years ago, still it is more than relevant in today's UI/UX context. And I would like to add my two cents.
var element = document.getElementById('flux');
if (element.scrollHeight - element.scrollTop === element.clientHeight)
{
// element is at the end of its scroll, load more content
}
Some elements won't allow you to scroll the full height of the element. In those cases you can use:
var element = docuement.getElementById('flux');
if (element.offsetHeight + element.scrollTop === element.scrollHeight) {
// element is at the end of its scroll, load more content
}
I'm using the JSON Viewer plug-in with NPP 5.9 and it seems to work well.
I personally use following approach to sort dates.
let array = ["July 11, 1960", "February 1, 1974", "July 11, 1615", "October 18, 1851", "November 12, 1995"];
array.sort(function(date1, date2) {
date1 = new Date(date1);
date2 = new Date(date2);
if (date1 > date2) return 1;
if (date1 < date2) return -1;
})
On input, if you want to filter out other characters and only show numbers in the input field, you could replace the value of the field on keyup:
var yourInput = jQuery('#input-field');
yourInput.keyup(function() {
yourInput.val((yourInput.val().replace(/[^\d]/g,'')))
})
Please try like this,
return Article::where('id',$article)->with(['products'=>function($products, $offset, $limit) {
return $products->offset($offset*$limit)->limit($limit);
}])
jQuery 1.4 has a new feature for doing this, and it rules. I've forgotten what it's called, but you use it like this:
$("a.directions-link").attr("href", function(i, href) {
return href + '?q=testing';
});
That loops over all the elements too, so no need for $.each
May be this can help:
Use MyTest
Go
select * from information_schema.COLUMNS where TABLE_NAME='employee'
{ where: MyTest= DatabaseName Employee= TableName } --Optional conditions
Since LocalDateSerializer
turns it into "[year,month,day]" (a json array) rather than "year-month-day" (a json string) by default, and since I don't want to require any special ObjectMapper
setup (you can make LocalDateSerializer
generate strings if you disable SerializationFeature.WRITE_DATES_AS_TIMESTAMPS
but that requires additional setup to your ObjectMapper
), I use the following:
imports:
import com.fasterxml.jackson.databind.ser.std.ToStringSerializer;
import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateDeserializer;
code:
// generates "yyyy-MM-dd" output
@JsonSerialize(using = ToStringSerializer.class)
// handles "yyyy-MM-dd" input just fine (note: "yyyy-M-d" format will not work)
@JsonDeserialize(using = LocalDateDeserializer.class)
private LocalDate localDate;
And now I can just use new ObjectMapper()
to read and write my objects without any special setup.
Typical scenario,
scp -r -P port username@ip:/path-to-folder .
explained with an sample,
scp -r -P 27000 [email protected]:/tmp/hotel_dump .
where,
port = 27000
username = "abc" , remote server username
path-to-folder = tmp/hotel_dump
. = current local directory
Your code would have worked if it had been in this format: YYYY-MM-DD
, this is the computer standard for date formats http://en.wikipedia.org/wiki/ISO_8601
Yes, you can do this, but I doubt that it would improve performances, unless your query has a real large latency.
You could do:
UPDATE table SET posX=CASE
WHEN id=id[1] THEN posX[1]
WHEN id=id[2] THEN posX[2]
...
ELSE posX END, posY = CASE ... END
WHERE id IN (id[1], id[2], id[3]...);
The total cost is given more or less by: NUM_QUERIES * ( COST_QUERY_SETUP + COST_QUERY_PERFORMANCE ). This way, you knock down a bit on NUM_QUERIES, but COST_QUERY_PERFORMANCE goes up bigtime. If COST_QUERY_SETUP is really huge (e.g., you're calling some network service which is real slow) then, yes, you might still end up on top.
Otherwise, I'd try with indexing on id, or modifying the architecture.
In MySQL I think you could do this more easily with a multiple INSERT ON DUPLICATE KEY UPDATE (but am not sure, never tried).
There is also a really simple way to do this with the help of the RecursiveTreeIterator
class, answered here: https://stackoverflow.com/a/37548504/2032235
There is nice tiny library to work with utf8 from c++: utfcpp
I think the best answer is actually explained on the vim wikia:
http://vim.wikia.com/wiki/Indenting_source_code
Note that it advises against using "set autoindent." The best feature of all I find in this explanation is being able to set per-file settings, which is especially useful if you program in python and C++, for example, as you'd want 4 spaces for tabs in the former and 2 for spaces in the latter.
the simple way I found out: add a "li" tag on the right side of an "a" tag List item
<li></span><a><span id="expand1"></span></a></li>
On CSS file create this below:
#expand1 {
padding-left: 40px;
}
As stated, unit tests are designed to run without interaction.
However, you can debug unit tests, just like any other code. The easiest way is to use the Debug button in the Test Results tab.
Being able to debug means being able to use breakpoints. Being able to use breakpoints, then, means being able to use Tracepoints, which I find extremely useful in every day debugging.
Essentially, Tracepoints allow you to write to the Output window (or, more accurately, to standard output). Optionally, you can continue to run, or you can stop like a regular breakpoint. This gives you the "functionality" you are asking for, without the need to rebuild your code, or fill it up with debug information.
Simply add a breakpoint, and then right-click on that breakpoint. Select the "When Hit..." option:
Which brings up the dialog:
A few things to note:
See the documentation for more details.
If you have to type
/Applications/MAMP/bin/php5.3/bin/php
in your command line then add
/Applications/MAMP/bin/php5.3/bin
to your PATH to be able to call php from anywhere.
Try this, using mkdir:
if (!file_exists('path/to/directory')) {
mkdir('path/to/directory', 0777, true);
}
Note that 0777
is already the default mode for directories and may still be modified by the current umask.
echo "blahblah"> txt.txt
will erase the txt and put blahblah in it's place
echo "blahblah">> txt.txt
will write blahblah on a new line in the txt
I think that both will create a new txt if none exists (I know that the first one does)
Where "txt.txt
" is written above, a file path can be inserted if wanted. e.g. C:\Users\<username>\desktop
, which will put it on their desktop.
If you're displaying a user-readable file name, you do not want to use lastPathComponent
. Instead, pass the full path to NSFileManager's displayNameAtPath:
method. This basically does does the same thing, only it correctly localizes the file name and removes the extension based on the user's preferences.
First import FormsModule from angular lib and under NgModule declared it in imports
import { FormsModule } from '@angular/forms';
@NgModule({
declarations: [
AppComponent,
],
imports: [
BrowserModule,
FormsModule
],
providers: [],
bootstrap: [AppComponent]
})
This post may be a bit old, but I also had the same problem recently. The first solution proposed by John Stauffer is a good one, but I had some problems as I am working this spring. The spring's dependency-jars I use have some property files and xml-schemas declaration which share the same paths and names. Although these jars come from the same versions, the jar-with-dependencies maven-goal was overwriting theses file with the last file found.
In the end, the application was not able to start as the spring jars could not find the correct properties files. In this case the solution propose by Rop have solved my problem.
Also since then, the spring-boot project now exist. It has a very cool way to manage this problem by providing a maven goal which overload the package goal and provide its own class loader. See spring-boots Reference Guide
 
works really well. However, it will display one of those strange characters in ANSI encoding. <xsl:text>
worked best for me.
<xsl:text> </xsl:text>
Python 3.6 now supports shorthand literal string interpolation with PEP 498. For your use case, the new syntax is simply:
f"({self.goals} goals, ${self.penalties})"
This is similar to the previous .format
standard, but lets one easily do things like:
>>> width = 10
>>> precision = 4
>>> value = decimal.Decimal('12.34567')
>>> f'result: {value:{width}.{precision}}'
'result: 12.35'
All you need is width:100%
somewhere that applies to the tag as shown by the various answers here.
Using col-xs-12:
<!-- adds float:left, which is usually not a problem -->
<img class='img-responsive col-xs-12' />
Or inline CSS:
<img class='img-responsive' style='width:100%;' />
Or, in your own CSS file, add an additional definition for .img-responsive
.img-responsive {
width:100%;
}
THE ROOT OF THE PROBLEM
This is a known FF bug that <fieldset>
does not respect overflow rules:
https://bugzilla.mozilla.org/show_bug.cgi?id=261037
A CSS "FIX" to fix the FireFox bug would be to make the <fieldset>
display:table-column
. However, doing so, according to the following link, will cause the display of the fieldset to fail in Opera:
https://github.com/TryGhost/Ghost/issues/789
So, just set your tag to 100% width as described in one of the solutions above.
GCC does actually optimize a*a*a*a*a*a
to (a*a*a)*(a*a*a)
when a is an integer. I tried with this command:
$ echo 'int f(int x) { return x*x*x*x*x*x; }' | gcc -o - -O2 -S -masm=intel -x c -
There are a lot of gcc flags but nothing fancy. They mean: Read from stdin; use O2 optimization level; output assembly language listing instead of a binary; the listing should use Intel assembly language syntax; the input is in C language (usually language is inferred from input file extension, but there is no file extension when reading from stdin); and write to stdout.
Here's the important part of the output. I've annotated it with some comments indicating what's going on in the assembly language:
; x is in edi to begin with. eax will be used as a temporary register.
mov eax, edi ; temp = x
imul eax, edi ; temp = x * temp
imul eax, edi ; temp = x * temp
imul eax, eax ; temp = temp * temp
I'm using system GCC on Linux Mint 16 Petra, an Ubuntu derivative. Here's the gcc version:
$ gcc --version
gcc (Ubuntu/Linaro 4.8.1-10ubuntu9) 4.8.1
As other posters have noted, this option is not possible in floating point, because floating point arithmetic is not associative.
SELECT * FROM employees WHERE name NOT IN (SELECT name FROM eotm_dyn)
OR
SELECT * FROM employees WHERE NOT EXISTS (SELECT * FROM eotm_dyn WHERE eotm_dyn.name = employees.name)
OR
SELECT * FROM employees LEFT OUTER JOIN eotm_dyn ON eotm_dyn.name = employees.name WHERE eotm_dyn IS NULL
If you want to add a header to all Jersey responses, you could also use a ContainerResponseFilter
, from Jersey's filter documentation :
import java.io.IOException;
import javax.ws.rs.container.ContainerRequestContext;
import javax.ws.rs.container.ContainerResponseContext;
import javax.ws.rs.container.ContainerResponseFilter;
import javax.ws.rs.core.Response;
@Provider
public class PoweredByResponseFilter implements ContainerResponseFilter {
@Override
public void filter(ContainerRequestContext requestContext, ContainerResponseContext responseContext)
throws IOException {
responseContext.getHeaders().add("X-Powered-By", "Jersey :-)");
}
}
Make sure that you initialize it correctly in your project using the @Provider
annotation or through traditional ways with web.xml
.
You could use a nested Any()
for this check which is available on any Enumerable
:
bool hasMatch = myStrings.Any(x => parameters.Any(y => y.source == x));
Faster performing on larger collections would be to project parameters
to source
and then use Intersect
which internally uses a HashSet<T>
so instead of O(n^2) for the first approach (the equivalent of two nested loops) you can do the check in O(n) :
bool hasMatch = parameters.Select(x => x.source)
.Intersect(myStrings)
.Any();
Also as a side comment you should capitalize your class names and property names to conform with the C# style guidelines.
This works fine for me.
My Main class:
package com.curso.online.gradle;
import org.apache.commons.lang3.StringUtils;
import org.apache.log4j.Logger;
public class Main {
public static void main(String[] args) {
Logger logger = Logger.getLogger(Main.class);
logger.debug("Starting demo");
String s = "Some Value";
if (!StringUtils.isEmpty(s)) {
System.out.println("Welcome ");
}
logger.debug("End of demo");
}
}
And it is the content of my file build.gradle:
apply plugin: 'java'
apply plugin: 'eclipse'
repositories {
mavenCentral()
}
dependencies {
compile group: 'commons-collections', name: 'commons-collections', version: '3.2'
testCompile group: 'junit', name: 'junit', version: '4.+'
compile 'org.apache.commons:commons-lang3:3.0'
compile 'log4j:log4j:1.2.16'
}
task fatJar(type: Jar) {
manifest {
attributes 'Main-Class': 'com.curso.online.gradle.Main'
}
baseName = project.name + '-all'
from { configurations.compile.collect { it.isDirectory() ? it : zipTree(it) } }
with jar
}
And I write the following in my console:
java -jar ProyectoEclipseTest-all.jar
And the output is great:
log4j:WARN No appenders could be found for logger (com.curso.online.gradle.Main)
.
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more in
fo.
Welcome
As other users say, you probably need an implementation of java.util.List.
If, for some reason, you finally need an array, you can do two things:
Use a List and then convert it to an array with myList.toArray()
Use an array of certain size. If you need more or less size, you can modify it with java.util.Arrays methods.
Best solution will depend on your problem ;)
Check this out: http://download.oracle.com/javase/1,5.0/docs/api/java/math/BigDecimal.html#divideAndRemainder%28java.math.BigDecimal%29
You just need to wrap your int or long variable in a BigDecimal object, then invoke the divideAndRemainder method on it. The returned array will contain the quotient and the remainder (in that order).
The easiest way that I found for adding a column to a DataFrame was to use the "add" function. Here's a snippet of code, also with the output to a CSV file. Note that including the "columns" argument allows you to set the name of the column (which happens to be the same as the name of the np.array that I used as the source of the data).
# now to create a PANDAS data frame
df = pd.DataFrame(data = FF_maxRSSBasal, columns=['FF_maxRSSBasal'])
# from here on, we use the trick of creating a new dataframe and then "add"ing it
df2 = pd.DataFrame(data = FF_maxRSSPrism, columns=['FF_maxRSSPrism'])
df = df.add( df2, fill_value=0 )
df2 = pd.DataFrame(data = FF_maxRSSPyramidal, columns=['FF_maxRSSPyramidal'])
df = df.add( df2, fill_value=0 )
df2 = pd.DataFrame(data = deltaFF_strainE22, columns=['deltaFF_strainE22'])
df = df.add( df2, fill_value=0 )
df2 = pd.DataFrame(data = scaled, columns=['scaled'])
df = df.add( df2, fill_value=0 )
df2 = pd.DataFrame(data = deltaFF_orientation, columns=['deltaFF_orientation'])
df = df.add( df2, fill_value=0 )
#print(df)
df.to_csv('FF_data_frame.csv')
If you need to call the base constructor but not right away because your new (derived) class needs to do some data manipulation, the best solution is to resort to factory method. What you need to do is to mark private your derived constructor, then make a static method in your class that will do all the necessary stuff and later call the constructor and return the object.
public class MyClass : BaseClass
{
private MyClass(string someString) : base(someString)
{
//your code goes in here
}
public static MyClass FactoryMethod(string someString)
{
//whatever you want to do with your string before passing it in
return new MyClass(someString);
}
}
Subscript out of Range error occurs when you try to reference an Index for a collection that is invalid.
Most likely, the index in Windows does not actually include .xls. The index for the window should be the same as the name of the workbook displayed in the title bar of Excel.
As a guess, I would try using this:
Windows("Data Sheet - " & ComboBox_Month.Value & " " & TextBox_Year.Value).Activate
This adds a bit more randomness to the UUID generation but ensures each generated id is the same length
import org.apache.commons.codec.digest.DigestUtils;
import java.util.UUID;
public String createSalt() {
String ts = String.valueOf(System.currentTimeMillis());
String rand = UUID.randomUUID().toString();
return DigestUtils.sha1Hex(ts + rand);
}
//Mysql sum of multiple rows Hi Here is the simple way to do sum of columns
SELECT sum(IF(day_1 = 1,1,0)+IF(day_3 = 1,1,0)++IF(day_4 = 1,1,0)) from attendence WHERE class_period_id='1' and student_id='1'
My solution requires no additional css and works with any combination of input-addon, input-btn and form-control. It just uses pre-existing bootstrap classes
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>_x000D_
<script src="http://netdna.bootstrapcdn.com/bootstrap/3.0.0/js/bootstrap.min.js"></script>_x000D_
<link href="http://netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.min.css" type="text/css" rel="stylesheet" />_x000D_
<form style="padding:10px; margin:10px" action="" class=" form-inline">_x000D_
<div class="form-group">_x000D_
<div class="input-group">_x000D_
<div class="form-group">_x000D_
<div class="input-group">_x000D_
<input type="text" class="form-control" placeholder="MinVal">_x000D_
</div>_x000D_
</div>_x000D_
<div class="form-group">_x000D_
<div class="input-group">_x000D_
<input type="text" class="form-control" placeholder="MaxVal">_x000D_
</div>_x000D_
</div>_x000D_
</div>_x000D_
</div>_x000D_
</form>
_x000D_
This will be inline if there is space and wrap for smaller screens.
Full Example ( input-addon, input-btn and form-control. )
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>_x000D_
<script src="http://netdna.bootstrapcdn.com/bootstrap/3.0.0/js/bootstrap.min.js"></script>_x000D_
<link href="http://netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.min.css" type="text/css" rel="stylesheet" />_x000D_
<form style="padding:10px; margin:10px" action="" class=" form-inline">_x000D_
<div class="form-group">_x000D_
<div class="input-group">_x000D_
<div class="form-group">_x000D_
<div class="input-group">_x000D_
<span class="input-group-addon" id="basic-addon1">@</span>_x000D_
<input type="text" class="form-control" placeholder="Username" aria-describedby="basic-addon1">_x000D_
<span></span>_x000D_
</div>_x000D_
</div>_x000D_
<div class="form-group">_x000D_
<div class="input-group">_x000D_
<span></span>_x000D_
<span class="input-group-addon" id="basic-addon1">@</span>_x000D_
<input type="text" class="form-control" placeholder="Username" aria-describedby="basic-addon1">_x000D_
<span></span>_x000D_
</div>_x000D_
</div>_x000D_
<div class="form-group">_x000D_
<div class="input-group">_x000D_
<span></span>_x000D_
<span class="input-group-addon" id="basic-addon1">@</span>_x000D_
<input type="text" class="form-control" placeholder="Username" aria-describedby="basic-addon1">_x000D_
<span></span>_x000D_
</div>_x000D_
</div>_x000D_
<br>_x000D_
_x000D_
<div class="form-group">_x000D_
<div class="input-group">_x000D_
<input type="text" class="form-control" placeholder="Username" aria-describedby="basic-addon1">_x000D_
<span></span>_x000D_
</div>_x000D_
</div>_x000D_
<div class="form-group">_x000D_
<div class="input-group">_x000D_
<span></span>_x000D_
<input type="text" class="form-control" placeholder="Username" aria-describedby="basic-addon1">_x000D_
</div>_x000D_
</div>_x000D_
</div>_x000D_
</div>_x000D_
</form>
_x000D_
The selected answer will only work if there are no gaps in the sequence. However if you are using an autogenerated id, there are likely to be gaps in the sequence due to inserts that were rolled back.
This method should work if you have gaps
declare @temp (value int, primaryKey int, tempid int identity)
insert value, primarykey from mytable order by primarykey
select t1.value - t2.value from @temp t1
join @temp t2
on t1.tempid = t2.tempid - 1
In the specific case of Wicket: This is the very reason why I asked the Wicket devs to add support for an explicit two phase component initialization process in the framework's lifecycle of constructing a component i.e.
There was quite an active debate about whether it was necessary or not (it fully is necessary IMHO) as this link demonstrates http://apache-wicket.1842946.n4.nabble.com/VOTE-WICKET-3218-Component-onInitialize-is-broken-for-Pages-td3341090i20.html)
The good news is that the excellent devs at Wicket did end up introducing two phase initialization (to make the most aweseome Java UI framework even more awesome!) so with Wicket you can do all your post construction initialization in the onInitialize method that is called by the framework automatically if you override it - at this point in the lifecycle of your component its constructor has completed its work so virtual methods work as expected.
If you want to get the form data directly from Http request, without any model bindings or FormCollection
you can use this:
[HttpPost]
public ActionResult SubmitAction() {
// This will return an string array of all keys in the form.
// NOTE: you specify the keys in form by the name attributes e.g:
// <input name="this is the key" value="some value" type="test" />
var keys = Request.Form.AllKeys;
// This will return the value for the keys.
var value1 = Request.Form.Get(keys[0]);
var value2 = Request.Form.Get(keys[1]);
}
You can try to add some time.sleep
calls to your code.
It seems like the server side limits the amount of requests per timeunit (hour, day, second) as a security issue. You need to guess how many (maybe using another script with a counter?) and adjust your script to not surpass this limit.
In order to avoid your code from crashing, try to catch this error with try .. except
around the urllib2 calls.
var ws = new WebSocket("ws://" + window.location.host + ":6666");
ws.onopen = function() { ws.send( .. etc
Transparency is controlled by the alpha channel (AA
in #AARRGGBB
). Maximal value (255 dec, FF hex) means fully opaque. Minimum value (0 dec, 00 hex) means fully transparent. Values in between are semi-transparent, i.e. the color is mixed with the background color.
To get a fully transparent color set the alpha to zero. RR
, GG
and BB
are irrelevant in this case because no color will be visible. This means #00FFFFFF
("transparent White") is the same color as #00F0F8FF
("transparent AliceBlue").
To keep it simple one chooses black (#00000000
) or white (#00FFFFFF
) if the color does not matter.
In the table you linked to you'll find Transparent
defined as #00FFFFFF
.
Note:
After that, Click Apply and OK.
Tuples are compared position by position: the first item of the first tuple is compared to the first item of the second tuple; if they are not equal (i.e. the first is greater or smaller than the second) then that's the result of the comparison, else the second item is considered, then the third and so on.
See Common Sequence Operations:
Sequences of the same type also support comparisons. In particular, tuples and lists are compared lexicographically by comparing corresponding elements. This means that to compare equal, every element must compare equal and the two sequences must be of the same type and have the same length.
Also Value Comparisons for further details:
Lexicographical comparison between built-in collections works as follows:
- For two collections to compare equal, they must be of the same type, have the same length, and each pair of corresponding elements must compare equal (for example,
[1,2] == (1,2)
is false because the type is not the same).- Collections that support order comparison are ordered the same as their first unequal elements (for example,
[1,2,x] <= [1,2,y]
has the same value asx <= y
). If a corresponding element does not exist, the shorter collection is ordered first (for example,[1,2] < [1,2,3]
is true).
If not equal, the sequences are ordered the same as their first differing elements. For example, cmp([1,2,x], [1,2,y]) returns the same as cmp(x,y). If the corresponding element does not exist, the shorter sequence is considered smaller (for example, [1,2] < [1,2,3] returns True).
Note 1: <
and >
do not mean "smaller than" and "greater than" but "is before" and "is after": so (0, 1) "is before" (1, 0).
Note 2: tuples must not be considered as vectors in a n-dimensional space, compared according to their length.
Note 3: referring to question https://stackoverflow.com/questions/36911617/python-2-tuple-comparison: do not think that a tuple is "greater" than another only if any element of the first is greater than the corresponding one in the second.
$('input[type=checkbox]').change(function () {
alert('changed');
});
String newLine = System.getProperty("line.separator");//This will retrieve line separator dependent on OS.
System.out.println("line 1" + newLine + "line2");
Quick work around for the same is
Copy C:\Program Files\Java\jdk1.6.0_14\lib\tools.jar to C:\Program Files\Java\jre6\lib\
This exception is coming because JAVA_HOME is being set as C:\Program Files\Java\jre6 and Ant is not able to find tools.jar in it.
Consider adding the switch /D_USE_MATH_DEFINES to your compilation command line, or to define the macro in the project settings. This will drag the symbol to all reachable dark corners of include and source files leaving your source clean for multiple platforms. If you set it globally for the whole project, you will not forget it later in a new file(s).
If you arrange to have your Python worker in a separate process (either long-running server-type process or a spawned child on demand), your communication with it will be asynchronous on the node.js side. UNIX/TCP sockets and stdin/out/err communication are inherently async in node.
It's used for proxying requests to other servers.
An example from http://wiki.nginx.org/LoadBalanceExample is:
http {
upstream myproject {
server 127.0.0.1:8000 weight=3;
server 127.0.0.1:8001;
server 127.0.0.1:8002;
server 127.0.0.1:8003;
}
server {
listen 80;
server_name www.domain.com;
location / {
proxy_pass http://myproject;
}
}
}
This means all requests for / go to the any of the servers listed under upstream XXX, with a preference for port 8000.
Test::StaticTest()
is called exactly once during global static initialization.
Caller only has to add one line to the function that is to be their static constructor.
static_constructor<&Test::StaticTest>::c;
forces initialization of c
during global static initialization.
template<void(*ctor)()>
struct static_constructor
{
struct constructor { constructor() { ctor(); } };
static constructor c;
};
template<void(*ctor)()>
typename static_constructor<ctor>::constructor static_constructor<ctor>::c;
/////////////////////////////
struct Test
{
static int number;
static void StaticTest()
{
static_constructor<&Test::StaticTest>::c;
number = 123;
cout << "static ctor" << endl;
}
};
int Test::number;
int main(int argc, char *argv[])
{
cout << Test::number << endl;
return 0;
}
row = $("body").find('#' + row_id);
More importantly doing the additional body.find has no impact on performance. The proper way to do this is simply:
row = $('#' + row_id);
Quite apart from the timing, this code you show is simply incorrect: you execute 100 connections (completely ignoring all but the last one), and then when you do the first execute call you pass it a local variable query_stmt
which you only initialize after the execute call.
First, make your code correct, without worrying about timing yet: i.e. a function that makes or receives a connection and performs 100 or 500 or whatever number of updates on that connection, then closes the connection. Once you have your code working correctly is the correct point at which to think about using timeit
on it!
Specifically, if the function you want to time is a parameter-less one called foobar
you can use timeit.timeit (2.6 or later -- it's more complicated in 2.5 and before):
timeit.timeit('foobar()', number=1000)
You'd better specify the number of runs because the default, a million, may be high for your use case (leading to spending a lot of time in this code;-).
Since your question is more generic so try to implement it with XML Parsers available in Java .If you need it in specific to parsers, update your code here what you have tried yet
<?xml version="1.0" encoding="UTF-8"?>
<ep>
<source type="xml">TEST</source>
<source type="text"></source>
</ep>
DocumentBuilderFactory domFactory = DocumentBuilderFactory.newInstance();
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
Document doc = builder.parse("uri to xmlfile");
XPathFactory xPathfactory = XPathFactory.newInstance();
XPath xpath = xPathfactory.newXPath();
XPathExpression expr = xpath.compile("//ep/source[@type]");
NodeList nl = (NodeList) expr.evaluate(doc, XPathConstants.NODESET);
for (int i = 0; i < nl.getLength(); i++)
{
Node currentItem = nl.item(i);
String key = currentItem.getAttributes().getNamedItem("type").getNodeValue();
System.out.println(key);
}
You can do that, or you can use the readfile
function, which outputs it for you:
header('Content-Type: image/x-png'); //or whatever
readfile('thefile.png');
die();
Edit: Derp, fixed obvious glaring typo.
On a Scientific Linux 6.7 system, the man page on rsync says:
--ignore-times don't skip files that match size and time
I have two files with identical contents, but with different creation dates:
[root@windstorm ~]# ls -ls /tmp/master/usercron /tmp/new/usercron
4 -rwxrwx--- 1 root root 1595 Feb 15 03:45 /tmp/master/usercron
4 -rwxrwx--- 1 root root 1595 Feb 16 04:52 /tmp/new/usercron
[root@windstorm ~]# diff /tmp/master/usercron /tmp/new/usercron
[root@windstorm ~]# md5sum /tmp/master/usercron /tmp/new/usercron
368165347b09204ce25e2fa0f61f3bbd /tmp/master/usercron
368165347b09204ce25e2fa0f61f3bbd /tmp/new/usercron
With --size-only
, the two files are regarded the same:
[root@windstorm ~]# rsync -v --size-only -n /tmp/new/usercron /tmp/master/usercron
sent 29 bytes received 12 bytes 82.00 bytes/sec
total size is 1595 speedup is 38.90 (DRY RUN)
With --ignore-times
, the two files are regarded different:
[root@windstorm ~]# rsync -v --ignore-times -n /tmp/new/usercron /tmp/master/usercron
usercron
sent 32 bytes received 15 bytes 94.00 bytes/sec
total size is 1595 speedup is 33.94 (DRY RUN)
So it does not looks like --ignore-times
has any effect at all.
Python lists are mutable objects and here:
plot_data = [[]] * len(positions)
you are repeating the same list len(positions)
times.
>>> plot_data = [[]] * 3
>>> plot_data
[[], [], []]
>>> plot_data[0].append(1)
>>> plot_data
[[1], [1], [1]]
>>>
Each list in your list is a reference to the same object. You modify one, you see the modification in all of them.
If you want different lists, you can do this way:
plot_data = [[] for _ in positions]
for example:
>>> pd = [[] for _ in range(3)]
>>> pd
[[], [], []]
>>> pd[0].append(1)
>>> pd
[[1], [], []]
crcany will generate efficient C code for any CRC, and includes a library of over one hundred known CRC definitions.
Efficient CRC code uses tables instead of bit-wise calculations. crcany generates both byte-wise routines and word-wise routines, the latter tuned to the architecture they are generated on. Word-wise is the fastest. Byte-wise is still much faster than bit-wise, but the implementation is more easily portable over architectures.
You do not seem to have a protocol definition with a specific CRC definition that you need to match. In this case, you can pick any 16-bit CRC in the catalog, and you will get good performance.
If you have a relatively low bit error rate, e.g. single digit number of errors per packet, and you want to maximize your error detection performance, you would need to look at the packet size you are applying the CRC to, assuming that that is constant or bounded, and look at the performance of the best polynomials in Philip Koopman's extensive research. The classic CRCs, such as the CCITT/Kermit 16-bit CRC or the X.25 16-bit CRC are not the best performers.
One of the good 16-bit performers in Koopman's tables that is also in the catalog of CRCs used in practice is CRC-16/DNP. It has very good performance detecting up to 6-bit errors in a packet. Following is the code generated by crcany for that CRC definition. This code assumes a little-endian architecture for the word-wise calculation, e.g. Intel x86 and x86-64, and it assumes that uintmax_t
is 64 bits. crcany can be used to generate alternative code for big-endian and other word sizes.
crc16dnp.h:
// The _bit, _byte, and _word routines return the CRC of the len bytes at mem,
// applied to the previous CRC value, crc. If mem is NULL, then the other
// arguments are ignored, and the initial CRC, i.e. the CRC of zero bytes, is
// returned. Those routines will all return the same result, differing only in
// speed and code complexity. The _rem routine returns the CRC of the remaining
// bits in the last byte, for when the number of bits in the message is not a
// multiple of eight. The low bits bits of the low byte of val are applied to
// crc. bits must be in 0..8.
#include <stddef.h>
// Compute the CRC a bit at a time.
unsigned crc16dnp_bit(unsigned crc, void const *mem, size_t len);
// Compute the CRC of the low bits bits in val.
unsigned crc16dnp_rem(unsigned crc, unsigned val, unsigned bits);
// Compute the CRC a byte at a time.
unsigned crc16dnp_byte(unsigned crc, void const *mem, size_t len);
// Compute the CRC a word at a time.
unsigned crc16dnp_word(unsigned crc, void const *mem, size_t len);
crc16dnp.c:
#include <stdint.h>
#include "crc16dnp.h"
// This code assumes that unsigned is 4 bytes.
unsigned crc16dnp_bit(unsigned crc, void const *mem, size_t len) {
unsigned char const *data = mem;
if (data == NULL)
return 0xffff;
crc = ~crc;
crc &= 0xffff;
while (len--) {
crc ^= *data++;
for (unsigned k = 0; k < 8; k++)
crc = crc & 1 ? (crc >> 1) ^ 0xa6bc : crc >> 1;
}
crc ^= 0xffff;
return crc;
}
unsigned crc16dnp_rem(unsigned crc, unsigned val, unsigned bits) {
crc = ~crc;
crc &= 0xffff;
val &= (1U << bits) - 1;
crc ^= val;
while (bits--)
crc = crc & 1 ? (crc >> 1) ^ 0xa6bc : crc >> 1;
crc ^= 0xffff;
return crc;
}
#define table_byte table_word[0]
static unsigned short const table_word[][256] = {
{0xed35, 0xdb6b, 0x8189, 0xb7d7, 0x344d, 0x0213, 0x58f1, 0x6eaf, 0x12bc, 0x24e2,
0x7e00, 0x485e, 0xcbc4, 0xfd9a, 0xa778, 0x9126, 0x5f5e, 0x6900, 0x33e2, 0x05bc,
0x8626, 0xb078, 0xea9a, 0xdcc4, 0xa0d7, 0x9689, 0xcc6b, 0xfa35, 0x79af, 0x4ff1,
0x1513, 0x234d, 0xc49a, 0xf2c4, 0xa826, 0x9e78, 0x1de2, 0x2bbc, 0x715e, 0x4700,
0x3b13, 0x0d4d, 0x57af, 0x61f1, 0xe26b, 0xd435, 0x8ed7, 0xb889, 0x76f1, 0x40af,
0x1a4d, 0x2c13, 0xaf89, 0x99d7, 0xc335, 0xf56b, 0x8978, 0xbf26, 0xe5c4, 0xd39a,
0x5000, 0x665e, 0x3cbc, 0x0ae2, 0xbe6b, 0x8835, 0xd2d7, 0xe489, 0x6713, 0x514d,
0x0baf, 0x3df1, 0x41e2, 0x77bc, 0x2d5e, 0x1b00, 0x989a, 0xaec4, 0xf426, 0xc278,
0x0c00, 0x3a5e, 0x60bc, 0x56e2, 0xd578, 0xe326, 0xb9c4, 0x8f9a, 0xf389, 0xc5d7,
0x9f35, 0xa96b, 0x2af1, 0x1caf, 0x464d, 0x7013, 0x97c4, 0xa19a, 0xfb78, 0xcd26,
0x4ebc, 0x78e2, 0x2200, 0x145e, 0x684d, 0x5e13, 0x04f1, 0x32af, 0xb135, 0x876b,
0xdd89, 0xebd7, 0x25af, 0x13f1, 0x4913, 0x7f4d, 0xfcd7, 0xca89, 0x906b, 0xa635,
0xda26, 0xec78, 0xb69a, 0x80c4, 0x035e, 0x3500, 0x6fe2, 0x59bc, 0x4b89, 0x7dd7,
0x2735, 0x116b, 0x92f1, 0xa4af, 0xfe4d, 0xc813, 0xb400, 0x825e, 0xd8bc, 0xeee2,
0x6d78, 0x5b26, 0x01c4, 0x379a, 0xf9e2, 0xcfbc, 0x955e, 0xa300, 0x209a, 0x16c4,
0x4c26, 0x7a78, 0x066b, 0x3035, 0x6ad7, 0x5c89, 0xdf13, 0xe94d, 0xb3af, 0x85f1,
0x6226, 0x5478, 0x0e9a, 0x38c4, 0xbb5e, 0x8d00, 0xd7e2, 0xe1bc, 0x9daf, 0xabf1,
0xf113, 0xc74d, 0x44d7, 0x7289, 0x286b, 0x1e35, 0xd04d, 0xe613, 0xbcf1, 0x8aaf,
0x0935, 0x3f6b, 0x6589, 0x53d7, 0x2fc4, 0x199a, 0x4378, 0x7526, 0xf6bc, 0xc0e2,
0x9a00, 0xac5e, 0x18d7, 0x2e89, 0x746b, 0x4235, 0xc1af, 0xf7f1, 0xad13, 0x9b4d,
0xe75e, 0xd100, 0x8be2, 0xbdbc, 0x3e26, 0x0878, 0x529a, 0x64c4, 0xaabc, 0x9ce2,
0xc600, 0xf05e, 0x73c4, 0x459a, 0x1f78, 0x2926, 0x5535, 0x636b, 0x3989, 0x0fd7,
0x8c4d, 0xba13, 0xe0f1, 0xd6af, 0x3178, 0x0726, 0x5dc4, 0x6b9a, 0xe800, 0xde5e,
0x84bc, 0xb2e2, 0xcef1, 0xf8af, 0xa24d, 0x9413, 0x1789, 0x21d7, 0x7b35, 0x4d6b,
0x8313, 0xb54d, 0xefaf, 0xd9f1, 0x5a6b, 0x6c35, 0x36d7, 0x0089, 0x7c9a, 0x4ac4,
0x1026, 0x2678, 0xa5e2, 0x93bc, 0xc95e, 0xff00},
{0x740f, 0xdf41, 0x6fea, 0xc4a4, 0x43c5, 0xe88b, 0x5820, 0xf36e, 0x1b9b, 0xb0d5,
0x007e, 0xab30, 0x2c51, 0x871f, 0x37b4, 0x9cfa, 0xab27, 0x0069, 0xb0c2, 0x1b8c,
0x9ced, 0x37a3, 0x8708, 0x2c46, 0xc4b3, 0x6ffd, 0xdf56, 0x7418, 0xf379, 0x5837,
0xe89c, 0x43d2, 0x8726, 0x2c68, 0x9cc3, 0x378d, 0xb0ec, 0x1ba2, 0xab09, 0x0047,
0xe8b2, 0x43fc, 0xf357, 0x5819, 0xdf78, 0x7436, 0xc49d, 0x6fd3, 0x580e, 0xf340,
0x43eb, 0xe8a5, 0x6fc4, 0xc48a, 0x7421, 0xdf6f, 0x379a, 0x9cd4, 0x2c7f, 0x8731,
0x0050, 0xab1e, 0x1bb5, 0xb0fb, 0xdf24, 0x746a, 0xc4c1, 0x6f8f, 0xe8ee, 0x43a0,
0xf30b, 0x5845, 0xb0b0, 0x1bfe, 0xab55, 0x001b, 0x877a, 0x2c34, 0x9c9f, 0x37d1,
0x000c, 0xab42, 0x1be9, 0xb0a7, 0x37c6, 0x9c88, 0x2c23, 0x876d, 0x6f98, 0xc4d6,
0x747d, 0xdf33, 0x5852, 0xf31c, 0x43b7, 0xe8f9, 0x2c0d, 0x8743, 0x37e8, 0x9ca6,
0x1bc7, 0xb089, 0x0022, 0xab6c, 0x4399, 0xe8d7, 0x587c, 0xf332, 0x7453, 0xdf1d,
0x6fb6, 0xc4f8, 0xf325, 0x586b, 0xe8c0, 0x438e, 0xc4ef, 0x6fa1, 0xdf0a, 0x7444,
0x9cb1, 0x37ff, 0x8754, 0x2c1a, 0xab7b, 0x0035, 0xb09e, 0x1bd0, 0x6f20, 0xc46e,
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0xe80a, 0x4344, 0xf3ef, 0x58a1, 0xdfc0, 0x748e, 0xc425, 0x6f6b, 0x879e, 0x2cd0,
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0xcc7e, 0xd5c6, 0xff0e, 0xe6b6, 0x675e, 0x7ee6, 0x542e, 0x4d96, 0x01be, 0x1806,
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0x88d3, 0x916b, 0xc67a, 0xdfc2, 0xf50a, 0xecb2, 0xa09a, 0xb922, 0x93ea, 0x8a52,
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0x1ab0, 0x0308, 0x4f20, 0x5698, 0x7c50, 0x65e8, 0xe400, 0xfdb8, 0xd770, 0xcec8,
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0xaaa9, 0xb311, 0x32f9, 0x2b41, 0x0189, 0x1831, 0x5419, 0x4da1, 0x6769, 0x7ed1,
0xc94b, 0xd0f3, 0xfa3b, 0xe383, 0xafab, 0xb613, 0x9cdb, 0x8563, 0x048b, 0x1d33,
0x37fb, 0x2e43, 0x626b, 0x7bd3, 0x511b, 0x48a3, 0x1fb2, 0x060a, 0x2cc2, 0x357a,
0x7952, 0x60ea, 0x4a22, 0x539a, 0xd272, 0xcbca, 0xe102, 0xf8ba, 0xb492, 0xad2a,
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0x93dd, 0x8a65, 0xa0ad, 0xb915, 0xf53d, 0xec85, 0xc64d, 0xdff5, 0x5e1d, 0x47a5,
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0xc905, 0x7ce2, 0xefb2, 0x5a55, 0x846b, 0x318c, 0xa2dc, 0x173b, 0x53d9, 0xe63e,
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0x691d, 0x367f, 0xd7d9, 0x88bb, 0x59ec, 0x068e, 0xe728, 0xb84a, 0xcb3b, 0x9459,
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0xefef, 0xb08d, 0x512b, 0x0e49, 0xdf1e, 0x807c, 0x61da, 0x3eb8, 0x8e0d, 0xd16f,
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0xd63b, 0xc029, 0xa257, 0xb445, 0x8e73, 0x9861, 0x66d6, 0x70c4, 0x4af2, 0x5ce0,
0x3e9e, 0x288c, 0x12ba, 0x04a8, 0xd646, 0xc054, 0xfa62, 0xec70, 0x8e0e, 0x981c,
0xa22a, 0xb438, 0x123d, 0x042f, 0x3e19, 0x280b, 0x4a75, 0x5c67, 0x6651, 0x7043,
0xa2ad, 0xb4bf, 0x8e89, 0x989b, 0xfae5, 0xecf7, 0xd6c1, 0xc0d3, 0x3e64, 0x2876,
0x1240, 0x0452, 0x662c, 0x703e, 0x4a08, 0x5c1a, 0x8ef4, 0x98e6, 0xa2d0, 0xb4c2,
0xd6bc, 0xc0ae, 0xfa98, 0xec8a, 0xfbeb, 0xedf9, 0xd7cf, 0xc1dd, 0xa3a3, 0xb5b1,
0x8f87, 0x9995, 0x4b7b, 0x5d69, 0x675f, 0x714d, 0x1333, 0x0521, 0x3f17, 0x2905,
0xd7b2, 0xc1a0, 0xfb96, 0xed84, 0x8ffa, 0x99e8, 0xa3de, 0xb5cc, 0x6722, 0x7130,
0x4b06, 0x5d14, 0x3f6a, 0x2978, 0x134e, 0x055c, 0xa359, 0xb54b, 0x8f7d, 0x996f,
0xfb11, 0xed03, 0xd735, 0xc127, 0x13c9, 0x05db, 0x3fed, 0x29ff, 0x4b81, 0x5d93,
0x67a5, 0x71b7, 0x8f00, 0x9912, 0xa324, 0xb536, 0xd748, 0xc15a, 0xfb6c, 0xed7e,
0x3f90, 0x2982, 0x13b4, 0x05a6, 0x67d8, 0x71ca, 0x4bfc, 0x5dee, 0x653e, 0x732c,
0x491a, 0x5f08, 0x3d76, 0x2b64, 0x1152, 0x0740, 0xd5ae, 0xc3bc, 0xf98a, 0xef98,
0x8de6, 0x9bf4, 0xa1c2, 0xb7d0, 0x4967, 0x5f75, 0x6543, 0x7351, 0x112f, 0x073d,
0x3d0b, 0x2b19, 0xf9f7, 0xefe5, 0xd5d3, 0xc3c1, 0xa1bf, 0xb7ad, 0x8d9b, 0x9b89,
0x3d8c, 0x2b9e, 0x11a8, 0x07ba, 0x65c4, 0x73d6, 0x49e0, 0x5ff2, 0x8d1c, 0x9b0e,
0xa138, 0xb72a, 0xd554, 0xc346, 0xf970, 0xef62, 0x11d5, 0x07c7, 0x3df1, 0x2be3,
0x499d, 0x5f8f, 0x65b9, 0x73ab, 0xa145, 0xb757, 0x8d61, 0x9b73, 0xf90d, 0xef1f,
0xd529, 0xc33b, 0xd45a, 0xc248, 0xf87e, 0xee6c, 0x8c12, 0x9a00, 0xa036, 0xb624,
0x64ca, 0x72d8, 0x48ee, 0x5efc, 0x3c82, 0x2a90, 0x10a6, 0x06b4, 0xf803, 0xee11,
0xd427, 0xc235, 0xa04b, 0xb659, 0x8c6f, 0x9a7d, 0x4893, 0x5e81, 0x64b7, 0x72a5,
0x10db, 0x06c9, 0x3cff, 0x2aed, 0x8ce8, 0x9afa, 0xa0cc, 0xb6de, 0xd4a0, 0xc2b2,
0xf884, 0xee96, 0x3c78, 0x2a6a, 0x105c, 0x064e, 0x6430, 0x7222, 0x4814, 0x5e06,
0xa0b1, 0xb6a3, 0x8c95, 0x9a87, 0xf8f9, 0xeeeb, 0xd4dd, 0xc2cf, 0x1021, 0x0633,
0x3c05, 0x2a17, 0x4869, 0x5e7b, 0x644d, 0x725f}
};
unsigned crc16dnp_byte(unsigned crc, void const *mem, size_t len) {
unsigned char const *data = mem;
if (data == NULL)
return 0xffff;
crc &= 0xffff;
while (len--)
crc = (crc >> 8) ^
table_byte[(crc ^ *data++) & 0xff];
return crc;
}
// This code assumes that integers are stored little-endian.
unsigned crc16dnp_word(unsigned crc, void const *mem, size_t len) {
unsigned char const *data = mem;
if (data == NULL)
return 0xffff;
crc &= 0xffff;
while (len && ((ptrdiff_t)data & 0x7)) {
crc = (crc >> 8) ^
table_byte[(crc ^ *data++) & 0xff];
len--;
}
if (len >= 8) {
do {
uintmax_t word = crc ^ *(uintmax_t const *)data;
crc = table_word[7][word & 0xff] ^
table_word[6][(word >> 8) & 0xff] ^
table_word[5][(word >> 16) & 0xff] ^
table_word[4][(word >> 24) & 0xff] ^
table_word[3][(word >> 32) & 0xff] ^
table_word[2][(word >> 40) & 0xff] ^
table_word[1][(word >> 48) & 0xff] ^
table_word[0][word >> 56];
data += 8;
len -= 8;
} while (len >= 8);
}
while (len--)
crc = (crc >> 8) ^
table_byte[(crc ^ *data++) & 0xff];
return crc;
}
You want reorder()
. Here is an example with dummy data
set.seed(42)
df <- data.frame(Category = sample(LETTERS), Count = rpois(26, 6))
require("ggplot2")
p1 <- ggplot(df, aes(x = Category, y = Count)) +
geom_bar(stat = "identity")
p2 <- ggplot(df, aes(x = reorder(Category, -Count), y = Count)) +
geom_bar(stat = "identity")
require("gridExtra")
grid.arrange(arrangeGrob(p1, p2))
Giving:
Use reorder(Category, Count)
to have Category
ordered from low-high.
You could also try this simpler regex:
str = str.replaceAll("\\P{Alnum}", "");
super()
returns a parent-like object in new-style classes:
class A(object):
def __init__(self):
print("world")
class B(A):
def __init__(self):
print("hello")
super(B, self).__init__()
B()
Add Thread.sleep
try {
Thread.sleep(3000);
} catch(InterruptedException ie) {}
Following single line of code will avoid the duplicate rows of a DataTable
:
dataTable.DefaultView.ToTable(true, "employeeid");
Where:
first parameter in ToTable()
is a boolean which indicates whether you want distinct rows or not.
second parameter in the ToTable()
is the column name based on which we have to select distinct rows. Only these columns will be in the returned datatable.
The same can be done from a DataSet
, by accessing a specific DataTable
:
dataSet.Tables["Employee"].DefaultView.ToTable(true, "employeeid");
When I think of dummy variables I think of using them in the context of OLS regression, and I would do something like this:
import numpy as np
import pandas as pd
import statsmodels.api as sm
my_data = np.array([[5, 'a', 1],
[3, 'b', 3],
[1, 'b', 2],
[3, 'a', 1],
[4, 'b', 2],
[7, 'c', 1],
[7, 'c', 1]])
df = pd.DataFrame(data=my_data, columns=['y', 'dummy', 'x'])
just_dummies = pd.get_dummies(df['dummy'])
step_1 = pd.concat([df, just_dummies], axis=1)
step_1.drop(['dummy', 'c'], inplace=True, axis=1)
# to run the regression we want to get rid of the strings 'a', 'b', 'c' (obviously)
# and we want to get rid of one dummy variable to avoid the dummy variable trap
# arbitrarily chose "c", coefficients on "a" an "b" would show effect of "a" and "b"
# relative to "c"
step_1 = step_1.applymap(np.int)
result = sm.OLS(step_1['y'], sm.add_constant(step_1[['x', 'a', 'b']])).fit()
print result.summary()
map of the entity (even an empty one) added to the configuration will lead to having the entity type be part of the context. We had an entity with no relationship to other entities that was fixed with an empty map.
The upcoming Chrome "Scroll to text" feature is exactly what you are looking for....
https://github.com/bokand/ScrollToTextFragment
You basically add #targetText=
at the end of the URL and the browser will scroll to the target text and highlight it after the page is loaded.
It is in the version of Chrome that is running on my desk, but currently it must be manually enabled. Presumably it will soon be enabled by default in the production Chrome builds and other browsers will follow, so OK to start adding to your links now and it will start working then.
Have you tried the =DateValue()
function?
To include time value, just add the functions together:
=DateValue(A1)+TimeValue(A1)
Clearing the cache is too annoying when you need to clear the cache 30 times an hour.. so I installed a Chrome Extension called Classic Cache Killer that clears the cache on every page load.
Chrome Store Link (free) (Now without malware!)
Now my mock json, javascript, css, html and data refreshes every time on every page load.
I never have to worry if I need to clear my cache.
There are about 20 cache cleaners for Chrome I found, but this one seemed lightweight and zero effort. In an update, Cache Killer can now stay "always on".
Note: I do not know the plugin author in any way. I just found it useful.
To select the first column of a table you can use this syntax
tr td:nth-child(1n + 2){
padding-left: 10px;
}
It may be too late now, I use index
method to retrieve last index of a DataFrame, then use [-1]
to get the last values:
For example,
df = pd.DataFrame(np.zeros((4, 1)), columns=['A'])
print(f'df:\n{df}\n')
print(f'Index = {df.index}\n')
print(f'Last index = {df.index[-1]}')
The output is
df:
A
0 0.0
1 0.0
2 0.0
3 0.0
Index = RangeIndex(start=0, stop=4, step=1)
Last index = 3
The DataGrid has an XAML property IsReadOnly
that you can set to true
:
<my:DataGrid
IsReadOnly="True"
/>
Python comes with numerous ways of formatting strings:
New style .format()
, which supports a rich formatting mini-language:
>>> temperature = 10
>>> print("the furnace is now {} degrees!".format(temperature))
the furnace is now 10 degrees!
Old style %
format specifier:
>>> print("the furnace is now %d degrees!" % temperature)
the furnace is now 10 degrees!
In Py 3.6 using the new f""
format strings:
>>> print(f"the furnace is now {temperature} degrees!")
the furnace is now 10 degrees!
Or using print()
s default sep
arator:
>>> print("the furnace is now", temperature, "degrees!")
the furnace is now 10 degrees!
And least effectively, construct a new string by casting it to a str()
and concatenating:
>>> print("the furnace is now " + str(temperature) + " degrees!")
the furnace is now 10 degrees!
Or join()
ing it:
>>> print(' '.join(["the furnace is now", str(temperature), "degrees!"]))
the furnace is now 10 degrees!
You could use an image submit button:
<input type="image" id="saveform" src="logg.png " alt="Submit Form" />
//Add the Framework in .h file
#import <MessageUI/MessageUI.h>
#import <MessageUI/MFMailComposeViewController.h>
//Set the delegate methods
UIViewController<UINavigationControllerDelegate,MFMessageComposeViewControllerDelegate>
//add the below code in .m file
- (void)viewDidAppear:(BOOL)animated{
[super viewDidAppear:animated];
MFMessageComposeViewController *controller =
[[[MFMessageComposeViewController alloc] init] autorelease];
if([MFMessageComposeViewController canSendText])
{
NSString *str= @"Hello";
controller.body = str;
controller.recipients = [NSArray arrayWithObjects:
@"", nil];
controller.delegate = self;
[self presentModalViewController:controller animated:YES];
}
}
- (void)messageComposeViewController:
(MFMessageComposeViewController *)controller
didFinishWithResult:(MessageComposeResult)result
{
switch (result)
{
case MessageComposeResultCancelled:
NSLog(@"Cancelled");
break;
case MessageComposeResultFailed:
NSLog(@"Failed");
break;
case MessageComposeResultSent:
break;
default:
break;
}
[self dismissModalViewControllerAnimated:YES];
}
use if (testString.Equals(testString2))
.
You can change the number format of the column to this custom format:
0;-0;;@
which will hide all 0 values.
To do this, select the column, right-click > Format Cells > Custom.
When you are using GET Method the contract must be this.
[WebGet(UriTemplate = "/", BodyStyle = WebMessageBodyStyle.Bare, ResponseFormat = WebMessageFormat.Json)]
List<User> Get();
with this we have a json without the boot parameter
Aldo Flores @alduar http://alduar.blogspot.com
They have to do with the difference between DOS style line endings and Unix style. Check out the Wikipedia article. You may be able to find a dos2unix tool to help, or simply write a small script to fix them yourself.
Edit: I found the following Python sample code here:
string.replace( str, '\r', '' )
It's rather simple. Private setters allow you to create read-only public or protected properties.
That's it. That's the only reason.
Yes, you can create a read-only property by only specifying the getter, but with auto-implmeneted properties you are required to specify both get and set, so if you want an auto-implemented property to be read-only, you must use private setters. There is no other way to do it.
It's true that Private setters were not created specificlly for auto-implemented read-only properties, but their use is a bit more esoteric for other reasons, largely centering around read-only properties and the use of reflection and serialization.
The bash script "corstest" below works for me. It is based on Jun's comment above.
usage
corstest [-v] url
examples
./corstest https://api.coindesk.com/v1/bpi/currentprice.json
https://api.coindesk.com/v1/bpi/currentprice.json Access-Control-Allow-Origin: *
the positive result is displayed in green
./corstest https://github.com/IonicaBizau/jsonrequest
https://github.com/IonicaBizau/jsonrequest does not support CORS
you might want to visit https://enable-cors.org/ to find out how to enable CORS
the negative result is displayed in red and blue
the -v option will show the full curl headers
corstest
#!/bin/bash
# WF 2018-09-20
# https://stackoverflow.com/a/47609921/1497139
#ansi colors
#http://www.csc.uvic.ca/~sae/seng265/fall04/tips/s265s047-tips/bash-using-colors.html
blue='\033[0;34m'
red='\033[0;31m'
green='\033[0;32m' # '\e[1;32m' is too bright for white bg.
endColor='\033[0m'
#
# a colored message
# params:
# 1: l_color - the color of the message
# 2: l_msg - the message to display
#
color_msg() {
local l_color="$1"
local l_msg="$2"
echo -e "${l_color}$l_msg${endColor}"
}
#
# show the usage
#
usage() {
echo "usage: [-v] $0 url"
echo " -v |--verbose: show curl result"
exit 1
}
if [ $# -lt 1 ]
then
usage
fi
# commandline option
while [ "$1" != "" ]
do
url=$1
shift
# optionally show usage
case $url in
-v|--verbose)
verbose=true;
;;
esac
done
if [ "$verbose" = "true" ]
then
curl -s -X GET $url -H 'Cache-Control: no-cache' --head
fi
origin=$(curl -s -X GET $url -H 'Cache-Control: no-cache' --head | grep -i access-control)
if [ $? -eq 0 ]
then
color_msg $green "$url $origin"
else
color_msg $red "$url does not support CORS"
color_msg $blue "you might want to visit https://enable-cors.org/ to find out how to enable CORS"
fi
I just want to echo sam9046's modest comment as an alternative and potentially much easier solution that worked in my case: uninstall and install homebrew again from scratch. No sudo commands required.
You can also browse/modify the uninstall script from that link above if you need to ensure it won't affect your previously installed packages. In my case this was just my home machine so I just started over.
From themomorohoax.com:
A bang can used in the below ways, in order of my personal preference.
1) An active record method raises an error if the method does not do what it says it will.
2) An active record method saves the record or a method saves an object (e.g. strip!)
3) A method does something “extra”, like posts to someplace, or does some action.
The point is: only use a bang when you’ve really thought about whether it’s necessary, to save other developers the annoyance of having to check why you are using a bang.
The bang provides two cues to other developers.
1) that it’s not necessary to save the object after calling the method.
2) when you call the method, the db is going to be changed.
http://www.themomorohoax.com/2009/02/11/when-to-use-a-bang-exclamation-point-after-rails-methods
If you want to delete database programatically you can use deleteDatabase
from Context
class:
deleteDatabase(String name)
Delete an existing private SQLiteDatabase associated with this Context's application package.
You can prevent future connections:
REVOKE CONNECT ON DATABASE thedb FROM public;
(and possibly other users/roles; see \l+
in psql
)
You can then terminate all connections to this db except your own:
SELECT pid, pg_terminate_backend(pid)
FROM pg_stat_activity
WHERE datname = current_database() AND pid <> pg_backend_pid();
On older versions pid
was called procpid
so you'll have to deal with that.
Since you've revoked CONNECT
rights, whatever was trying to auto-connect should no longer be able to do so.
You'll now be able to drop the DB.
This won't work if you're using superuser connections for normal operations, but if you're doing that you need to fix that problem first.
After you're done dropping the database, if you create the database again, you can execute below command to restore the access
GRANT CONNECT ON DATABASE thedb TO public;
Generally to avoid this kind of exceptions, you will need to surround your code by try and catch like this
try{
// your intent here
} catch (ActivityNotFoundException e) {
// show message to user
}
A callback function is a function you specify to an existing function/method, to be invoked when an action is completed, requires additional processing, etc.
In Javascript, or more specifically jQuery, for example, you can specify a callback argument to be called when an animation has finished.
In PHP, the preg_replace_callback()
function allows you to provide a function that will be called when the regular expression is matched, passing the string(s) matched as arguments.
.remove()
is deprecated. instead we can use deleteMany
DateTime.deleteMany({}, callback)
.
SELECT
SUBSTRING_INDEX(SUBSTRING_INDEX(rent, ' ', 1), ' ', -1) AS currency,
SUBSTRING_INDEX(SUBSTRING_INDEX(rent, ' ', 3), ' ', -1) AS rent
FROM tolets
Use:
SELECT oi.orderid,
SUM(oi.quantity * p.price) AS grand_total,
FROM ORDERITEM oi
JOIN PRODUCT p ON p.id = oi.productid
WHERE oi.orderid = @OrderId
GROUP BY oi.orderid
Mind that if either oi.quantity
or p.price
is null, the SUM will return NULL.
First install beautiful soup version 4. write command in the terminal window:
pip install beautifulsoup4
then import the BeutifulSoup library
input[name=username] { disabled: true; /* Does not work */ }
I know this question is quite old but for other users who come across this problem, I suppose the easiest way to disable input is simply by ':disabled'
<input type="text" name="username" value="admin" disabled />
<style type="text/css">
input[name=username]:disabled {
opacity: 0.5 !important; /* Fade effect */
cursor: not-allowed; /* Cursor change to disabled state*/
}
</style>
In reality, if you have some script to disable the input dynamically/automatically with javascript or jquery that would automatically disable based on the condition you add.
In jQuery for Example:
if (condition) {
// Make this input prop disabled state
$('input').prop('disabled', true);
}
else {
// Do something else
}
Hope the answer in CSS helps.
The first step would be to add
position: 'absolute',
then if you want the element full width, add
left: 0,
right: 0,
then, if you want to put the element in the bottom, add
bottom: 0,
// don't need set top: 0
if you want to position the element at the top, replace bottom: 0
by top: 0
This can be achieved by
<input type="file" accept="image/*" />
But this is not a good way. you have to code on the server side to check the file an image or not.
Check if image file is an actual image or fake image
if(isset($_POST["submit"])) {
$check = getimagesize($_FILES["fileToUpload"]["tmp_name"]);
if($check !== false) {
echo "File is an image - " . $check["mime"] . ".";
$uploadOk = 1;
}
else {
echo "File is not an image.";
$uploadOk = 0;
}
}
For more reference, see here
http://www.w3schools.com/tags/att_input_accept.asp
http://www.w3schools.com/php/php_file_upload.asp
If you upgrade to numpy 1.7 (where datetime is still labeled as experimental) the following should work.
dates/np.timedelta64(1,'Y')
Write-back and write-through describe policies when a write hit occurs, that is when the cache has the requested information. In these examples, we assume a single processor is writing to main memory with a cache.
Write-through: The information is written to the cache and memory, and the write finishes when both have finished. This has the advantage of being simpler to implement, and the main memory is always consistent (in sync) with the cache (for the uniprocessor case - if some other device modifies main memory, then this policy is not enough), and a read miss never results in writes to main memory. The obvious disadvantage is that every write hit has to do two writes, one of which accesses slower main memory.
Write-back: The information is written to a block in the cache. The modified cache block is only written to memory when it is replaced (in effect, a lazy write). A special bit for each cache block, the dirty bit, marks whether or not the cache block has been modified while in the cache. If the dirty bit is not set, the cache block is "clean" and a write miss does not have to write the block to memory.
The advantage is that writes can occur at the speed of the cache, and if writing within the same block only one write to main memory is needed (when the previous block is being replaced). The disadvantages are that this protocol is harder to implement, main memory can be not consistent (not in sync) with the cache, and reads that result in replacement may cause writes of dirty blocks to main memory.
The policies for a write miss are detailed in my first link.
These protocols don't take care of the cases with multiple processors and multiple caches, as is common in modern processors. For this, more complicated cache coherence mechanisms are required. Write-through caches have simpler protocols since a write to the cache is immediately reflected in memory.
Good resources:
To set red color:
textView.setBackgroundColor(0xfff00000);
Or
<color name="solid_red">#fff00000</color>
textView.setBackgroundResource(R.color.solid_red);
if working with IDLE installed version of Python
>>>def any(a,b):
... print(a+b)
...
>>>any(1,2)
3
This will flatten a list or dictionary (or list of lists or dictionaries of dictionaries etc). It assumes that the values are strings and it creates a string that concatenates each item with a separator argument. If you wanted you could use the separator to split the result into a list object afterward. It uses recursion if the next value is a list or a string. Use the key argument to tell whether you want the keys or the values (set key to false) from the dictionary object.
def flatten_obj(n_obj, key=True, my_sep=''):
my_string = ''
if type(n_obj) == list:
for val in n_obj:
my_sep_setter = my_sep if my_string != '' else ''
if type(val) == list or type(val) == dict:
my_string += my_sep_setter + flatten_obj(val, key, my_sep)
else:
my_string += my_sep_setter + val
elif type(n_obj) == dict:
for k, v in n_obj.items():
my_sep_setter = my_sep if my_string != '' else ''
d_val = k if key else v
if type(v) == list or type(v) == dict:
my_string += my_sep_setter + flatten_obj(v, key, my_sep)
else:
my_string += my_sep_setter + d_val
elif type(n_obj) == str:
my_sep_setter = my_sep if my_string != '' else ''
my_string += my_sep_setter + n_obj
return my_string
return my_string
print(flatten_obj(['just', 'a', ['test', 'to', 'try'], 'right', 'now', ['or', 'later', 'today'],
[{'dictionary_test': 'test'}, {'dictionary_test_two': 'later_today'}, 'my power is 9000']], my_sep=', ')
yields:
just, a, test, to, try, right, now, or, later, today, dictionary_test, dictionary_test_two, my power is 9000
1- There is no way to actually destroy an object in javascript, but using delete
, we could remove a reference from an object:
var obj = {};
obj.mypointer = null;
delete obj.mypointer;
2- The important point about the delete
keyword is that it does not actually destroy the object BUT if only after deleting that reference to the object, there is no other reference left in the memory pointed to the same object, that object would be marked as collectible. The delete
keyword deletes the reference but doesn't GC the actual object. it means if you have several references of the same object, the object will be collected just after you delete all the pointed references.
3- there are also some tricks and workarounds that could help us out, when we want to make sure we do not leave any memory leaks behind. for instance if you have an array consisting several objects, without any other pointed reference to those objects, if you recreate the array all those objects would be killed. For instance if you have var array = [{}, {}]
overriding the value of the array like array = []
would remove the references to the two objects inside the array and those two objects would be marked as collectible.
4- for your solution the easiest way is just this:
var storage = {};
storage.instance = new Class();
//since 'storage.instance' is your only reference to the object, whenever you wanted to destroy do this:
storage.instance = null;
// OR
delete storage.instance;
As mentioned above, either setting storage.instance = null
or delete storage.instance
would suffice to remove the reference to the object and allow it to be cleaned up by the GC. The difference is that if you set it to null
then the storage object still has a property called instance (with the value null). If you delete storage.instance
then the storage object no longer has a property named instance.
and WHAT ABOUT destroy method ??
the paradoxical point here is if you use instance.destroy
in the destroy function you have no access to the actual instance
pointer, and it won't let you delete it.
The only way is to pass the reference to the destroy function and then delete it:
// Class constructor
var Class = function () {
this.destroy = function (baseObject, refName) {
delete baseObject[refName];
};
};
// instanciate
var storage = {};
storage.instance = new Class();
storage.instance.destroy(object, "instance");
console.log(storage.instance); // now it is undefined
BUT if I were you I would simply stick to the first solution and delete the object like this:
storage.instance = null;
// OR
delete storage.instance;
WOW it was too much :)
For the header half of the question, I'm gonna give a shout out to res.type
here:
res.type('json')
is equivalent to
res.setHeader('Content-Type', 'application/json')
Source: express docs:
Sets the Content-Type HTTP header to the MIME type as determined by mime.lookup() for the specified type. If type contains the “/” character, then it sets the Content-Type to type.
If you just need to look at the query string as text, you can use: $window.location.search
It is possible to show smooth if you use Animation. In style just add "animation: show 1s" and the whole appearance discribe in keyframes.
It means that rather than needing to push the instruction pointer on the stack, you can simply jump to the top of a recursive function and continue execution. This allows for functions to recurse indefinitely without overflowing the stack.
I wrote a blog post on the subject, which has graphical examples of what the stack frames look like.
For the one who used to code on Pycharm, it also revives others as well.
import operator
Arr1=[1,2,3,45]
Arr2=[3,4,56,78]
print(list(map(operator.sub,Arr1,Arr2)))
Very often you have no option to setup the sending server so what I did I changed the XMLHttpRequest.open call in my javascript to a local get-file.php file where I have the following code in it:
<?php_x000D_
$file = file($_GET['url']);_x000D_
echo implode('', $file);_x000D_
?>
_x000D_
javascript is doing this:
var xhttp = new XMLHttpRequest();_x000D_
xhttp.onreadystatechange = function() {_x000D_
if (this.readyState == 4 && this.status == 200) {_x000D_
// File content is now in the this.responseText_x000D_
}_x000D_
};_x000D_
xhttp.open("GET", "get-file.php?url=http://site/file", true);_x000D_
xhttp.send();
_x000D_
In my case this solved the restriction/situation just perfectly. No need to hack Firefox or servers. Just load your javascript/html file with that small php file into the server and you're done.
Displaying an Image
in WPF is much easier than that. Try this:
<Image Source="{Binding DisplayedImagePath}" HorizontalAlignment="Left"
Margin="0,0,0,0" Name="image1" Stretch="Fill" VerticalAlignment="Bottom"
Grid.Row="8" Width="200" Grid.ColumnSpan="2" />
And the property can just be a string
:
public string DisplayedImage
{
get { return @"C:\Users\Public\Pictures\Sample Pictures\Chrysanthemum.jpg"; }
}
Although you really should add your images to a folder named Images
in the root of your project and set their Build Action to Resource in the Properties Window in Visual Studio... you could then access them using this format:
public string DisplayedImage
{
get { return "/AssemblyName;component/Images/ImageName.jpg"; }
}
UPDATE >>>
As a final tip... if you ever have a problem with a control not working as expected, simply type 'WPF', the name of that control and then the word 'class' into a search engine. In this case, you would have typed 'WPF Image Class'. The top result will always be MSDN and if you click on the link, you'll find out all about that control and most pages have code examples as well.
UPDATE 2 >>>
If you followed the examples from the link to MSDN and it's not working, then your problem is not the Image
control. Using the string
property that I suggested, try this:
<StackPanel>
<Image Source="{Binding DisplayedImagePath}" />
<TextBlock Text="{Binding DisplayedImagePath}" />
</StackPanel>
If you can't see the file path in the TextBlock
, then you probably haven't set your DataContext
to the instance of your view model. If you can see the text, then the problem is with your file path.
UPDATE 3 >>>
In .NET 4, the above Image.Source
values would work. However, Microsoft made some horrible changes in .NET 4.5 that broke many different things and so in .NET 4.5, you'd need to use the full pack
path like this:
<Image Source="pack://application:,,,/AssemblyName;component/Images/image_to_use.png">
For further information on pack URIs, please see the Pack URIs in WPF page on Microsoft Docs.
I would be tempted to use grepl
, which should give all the lines with matches and can be generalised for arbitrary strings.
mydata_2 <- read.table(textConnection("
sex age height_seca1 height_chad1 height_DL weight_alog1
1 F 19 1800 1797 180 70.0
2 F 19 1682 1670 167 69.0
3 F 21 1765 1765 178 80.0
4 F 21 1829 1833 181 74.0
5 F 21 1706 1705 170 103.0
6 F 18 1607 1606 160 76.0
7 F 19 1578 1576 156 50.0
8 F 19 1577 1575 156 61.0
9 F 21 1666 1665 166 52.0
10 F 17 1710 1716 172 65.0
11 F 28 1616 1619 161 65.5
12 F 22 1648 1644 165 57.5
13 F 19 1569 1570 155 55.0
14 F 19 1779 1777 177 55.0
15 M 18 1773 1772 179 70.0
16 M 18 1816 1809 181 81.0
17 M 19 1766 1765 178 77.0
18 M 19 1745 1741 174 76.0
19 M 18 1716 1714 170 71.0
20 M 21 1785 1783 179 64.0
21 M 19 1850 1854 185 71.0
22 M 31 1875 1880 188 95.0
23 M 26 1877 1877 186 105.5
24 M 19 1836 1837 185 100.0
25 M 18 1825 1823 182 85.0
26 M 19 1755 1754 174 79.0
27 M 26 1658 1658 165 69.0
28 M 20 1816 1818 183 84.0
29 M 18 1755 1755 175 67.0"),
sep = " ", header = TRUE)
which(grepl(1578, mydata_2$height_seca1))
The output is:
> which(grepl(1578, mydata_2$height_seca1))
[1] 7
>
[Edit] However, as pointed out in the comments, this will capture much more than the string 1578 (e.g. it also matches for 21578 etc) and thus should be used only if you are certain that you the length of the values you are searching will not be larger than the four characters or digits shown here.
And subsetting as per the other answer also works fine:
mydata_2[mydata_2$height_seca1 == 1578, ]
sex age height_seca1 height_chad1 height_DL weight_alog1
7 F 19 1578 1576 156 50
>
If you're looking for several different values, you could put them in a vector and then use the %in%
operator:
look.for <- c(1578, 1658, 1616)
> mydata_2[mydata_2$height_seca1 %in% look.for, ]
sex age height_seca1 height_chad1 height_DL weight_alog1
7 F 19 1578 1576 156 50.0
11 F 28 1616 1619 161 65.5
27 M 26 1658 1658 165 69.0
>
On Windows 10,
I just solved this issue by doing the following.
Goto my.ini and add these 2 lines under [mysqld]
skip-log-bin
log_bin_trust_function_creators = 1
restart MySQL service
Try this out
CREATE FUNCTION [dbo].[Split]
(
@ListOfValues varchar(max),
@ValueSeparator varchar(10)
)
RETURNS @ListOfValuesInRows TABLE
(
Value varchar(max)
)
AS
BEGIN
IF Len(@ListOfValues) = 0
RETURN
if @ValueSeparator <> ' '
Begin
WHILE CHARINDEX(@ValueSeparator, @ListOfValues) > 0
BEGIN
INSERT INTO @ListOfValuesInRows
SELECT LTRIM(RTRIM(SUBSTRING(@ListOfValues, 1, CHARINDEX(@ValueSeparator, @ListOfValues)-1)))
SET @ListOfValues = SubString(@ListOfValues, CharIndex(@ValueSeparator, @ListOfValues)+Len(@ValueSeparator), Len(@ListOfValues))
END
INSERT INTO @ListOfValuesInRows
SELECT LTRIM(RTRIM(@ListOfValues))
End
Else
BEGIN
DECLARE @xml XML;
SET @xml = N'<t>' + REPLACE(@ListOfValues, @ValueSeparator, '</t><t>') + '</t>';
INSERT INTO @ListOfValuesInRows (Value)
SELECT LTRIM(RTRIM(r.value( '.', 'varchar(MAX)' ))) AS item
FROM @xml.nodes( '/t' ) AS records( r )
END
RETURN
END
It's better (but wordier) to use:
var element = document.getElementById('something');
if (element != null && element.value == '') {
}
Please note, the first version of my answer was wrong:
var element = document.getElementById('something');
if (typeof element !== "undefined" && element.value == '') {
}
because getElementById()
always return an object (null object if not found) and checking for"undefined"
would never return a false
, as typeof null !== "undefined"
is still true
.
If you want search for sensitive data in order to remove it from your git history (which is the reason why I landed here), there are tools for that. Github as a dedicated help page for that issue.
Here is the gist of the article:
The BFG Repo-Cleaner is a faster, simpler alternative to git filter-branch for removing unwanted data. For example, to remove your file with sensitive data and leave your latest commit untouched), run:
bfg --delete-files YOUR-FILE-WITH-SENSITIVE-DATA
To replace all text listed in passwords.txt wherever it can be found in your repository's history, run:
bfg --replace-text passwords.txt
See the BFG Repo-Cleaner's documentation for full usage and download instructions.
I'll go ahead and throw this answer in because it is all I needed when I had the same question:
Date currentDate = new Date(System.currentTimeMillis());
currentDate
is now your current date in a Java Date
object.
I wasn't quite sure where I would store the start position, so I want to elaborate on David Boikes comment. I found that I could store that variable in the ui.item object itself and retrieve it in the stop function as so:
$( "#sortable" ).sortable({
start: function(event, ui) {
ui.item.startPos = ui.item.index();
},
stop: function(event, ui) {
console.log("Start position: " + ui.item.startPos);
console.log("New position: " + ui.item.index());
}
});
Wrap it in double quotes
alter user "dell-sys" with password 'Pass@133';
Notice that you will have to use the same case you used when you created the user using double quotes. Say you created "Dell-Sys"
then you will have to issue exact the same whenever you refer to that user.
I think the best you do is to drop that user and recreate without illegal identifier characters and without double quotes so you can later refer to it in any case you want.
Somehow, no one listed the simplest way:
class A
{
public:
int a, b;
};
class B : public A
{
B()
{
a = 0;
b = 0;
}
};
You can't access base members in the initializer list, but the constructor itself, just as any other member method, may access public
and protected
members of the base class.
Getting location updates requires lots of bolierplate code in Android, You need to take care of
To ease out all these steps i have created Android-EasyLocation (small android library) which will take care all this stuff and you can focus on business logic.
All you need is extend EasyLocationActivity and this
requestSingleLocationFix(easyLocationRequest);
or
requestLocationUpdates(easyLocationRequest);
Checkout sample app and steps needed here at https://github.com/akhgupta/Android-EasyLocation
word-wrap: break-word;
add this to your container that should do the trick
Let's say the list is:
<ul>
<li>item1</li>
<li>item2</li>
<li>item3</li>
</ul>
For this example. If I understand correctly, you want the list items to be in the middle of the screen, but you want the text IN those list items to be centered to the left of the list item itself. Doing that is actually pretty easy. You just need some CSS:
ul {
display: table;
margin: 0 auto;
text-align: left;
}
And it works! Here is what is happening. First, we say we want to affect only unordered lists. Then, we do Rafael Herscovici's trick for centering the list items. Finally, we say to align the text to the left of the list items.
No one seems to have mentioned about the negative infinity explicitly, so I think I should add it.
For negative infinity:
-math.inf
For positive infinity (just for the sake of completeness):
math.inf
If you are working on a widget app this solution should work for you:
Edit Configuration
Launch Option
to nothing
This is my code:
var x = prompt("enter number", "7");
var i = 0;
var binaryvar = " ";
function add(n) {
if (n == 0) {
binaryvar = "0" + binaryvar;
}
else {
binaryvar = "1" + binaryvar;
}
}
function binary() {
while (i < 1) {
if (x == 1) {
add(1);
document.write(binaryvar);
break;
}
else {
if (x % 2 == 0) {
x = x / 2;
add(0);
}
else {
x = (x - 1) / 2;
add(1);
}
}
}
}
binary();
Just set the view as null that will close the AlertDialog simple.
What you've done by following those directions is created an entirely new Python installation, separate from the system Python that is managed by Ubuntu packages.
Modules you had installed in the system Python (e.g. installed via packages, or by manual installation using the system Python to run the setup process) will not be available, since your /usr/local
-based python
is configured to look in its own module directories, not the system Python's.
You can re-add missing modules now by building them and installing them using your new /usr/local
-based Python.
Use this call
$objWriter->save('php://output');
To output the XLS sheet to the page you are on, just make sure that the page you are on has no other echo's,print's, outputs.
In my case I parsed an S3 url into its components.
For example:
Url: s3://bucket-name/path/to/file
Was parsed into:
Bucket: bucket-name
Path: /path/to/file
Having the path part containing a leading '/' failed the request.
The accepted answer by dr jimbob (using make altinstall
) got me most of the way there, with python2.7
in /usr/local/bin
but I also needed to install some third party modules. The nice thing is that easy_install gets its installation locations from the version of Python you are running, but I found I still needed to install easy_install for Python 2.7 otherwise I would get ImportError: No module named pkg_resources
. So I did this:
wget http://pypi.python.org/packages/2.7/s/setuptools/setuptools-0.6c11-py2.7.egg
sudo -i
export PATH=$PATH:/usr/local/bin
sh setuptools-0.6c11-py2.7.egg
exit
Now I have easy_install
and easy_install-2.7
in /usr/local/bin and the former overrides my system's 2.6 version of easy_install, so I removed it:
sudo rm /usr/local/bin/easy_install
Now I can install libraries for the 2.7 version of Python like this:
sudo /usr/local/bin/easy_install-2.7 numpy
Okay try this, simple and for IE11 and IE below 11 version
browserIsIE = navigator.userAgent.toUpperCase().indexOf("TRIDENT/") != -1 || navigator.userAgent.toUpperCase().indexOf("MSIE") != -1;
navigator.userAgent.toUpperCase().indexOf("TRIDENT/") != -1
for IE 11 version
navigator.userAgent.toUpperCase().indexOf("MSIE") != -1
for IE below 11 version
browserIsIE = navigator.userAgent.toUpperCase().indexOf("TRIDENT/") != -1 || navigator.userAgent.toUpperCase().indexOf("MSIE") != -1;_x000D_
_x000D_
console.log('Is IE Browser : '+ browserIsIE)
_x000D_
You can flip both vertical and horizontal at the same time
-moz-transform: scaleX(-1) scaleY(-1);
-o-transform: scaleX(-1) scaleY(-1);
-webkit-transform: scaleX(-1) scaleY(-1);
transform: scaleX(-1) scaleY(-1);
And with the transition property you can get a cool flip
-webkit-transition: transform .4s ease-out 0ms;
-moz-transition: transform .4s ease-out 0ms;
-o-transition: transform .4s ease-out 0ms;
transition: transform .4s ease-out 0ms;
transition-property: transform;
transition-duration: .4s;
transition-timing-function: ease-out;
transition-delay: 0ms;
Actually it flips the whole element, not just the background-image
SNIPPET
function flip(){_x000D_
var myDiv = document.getElementById('myDiv');_x000D_
if (myDiv.className == 'myFlipedDiv'){_x000D_
myDiv.className = '';_x000D_
}else{_x000D_
myDiv.className = 'myFlipedDiv';_x000D_
}_x000D_
}
_x000D_
#myDiv{_x000D_
display:inline-block;_x000D_
width:200px;_x000D_
height:20px;_x000D_
padding:90px;_x000D_
background-color:red;_x000D_
text-align:center;_x000D_
-webkit-transition:transform .4s ease-out 0ms;_x000D_
-moz-transition:transform .4s ease-out 0ms;_x000D_
-o-transition:transform .4s ease-out 0ms;_x000D_
transition:transform .4s ease-out 0ms;_x000D_
transition-property:transform;_x000D_
transition-duration:.4s;_x000D_
transition-timing-function:ease-out;_x000D_
transition-delay:0ms;_x000D_
}_x000D_
.myFlipedDiv{_x000D_
-moz-transform:scaleX(-1) scaleY(-1);_x000D_
-o-transform:scaleX(-1) scaleY(-1);_x000D_
-webkit-transform:scaleX(-1) scaleY(-1);_x000D_
transform:scaleX(-1) scaleY(-1);_x000D_
}
_x000D_
<div id="myDiv">Some content here</div>_x000D_
_x000D_
<button onclick="flip()">Click to flip</button>
_x000D_
In JavaScript you declare variables or functions by using the keywords var, let or function. In TypeScript classes you declare class members or methods without these keywords followed by a colon and the type or interface of that class member.
It’s just syntax sugar, there is no difference between:
var el: HTMLElement = document.getElementById('content');
and:
var el = document.getElementById('content');
On the other hand, because you specify the type you get all the information of your HTMLElement object.
As you will see in linked discussion there is no need for initializing char with special character as it's done for us and is represented by '\u0000' character code.
So if we want simply to check if specified char was initialized just write:
if(charVariable != '\u0000'){
actionsOnInitializedCharacter();
}
Link to question: what's the default value of char?
In the terminal, you are running the node application and it is running your script. That is a very different execution environment than directly running your script in the browser. While the Javascript language is largely the same (both V8 if you're running the Chrome browser), the rest of the execution environment such as libraries available are not the same.
node.js is a server-side Javascript execution environment that combines the V8 Javascript engine with a bunch of server-side libraries. require()
is one such feature that node.js adds to the environment. So, when you run node in the terminal, you are running an environment that contains require()
.
require()
is not a feature that is built into the browser. That is a specific feature of node.js, not of a browser. So, when you try to have the browser run your script, it does not have require()
.
There are ways to run some forms of node.js code in a browser (but not all). For example, you can get browser substitutes for require()
that work similarly (though not identically).
But, you won't be running a web server in your browser as that is not something the browser has the capability to do.
You may be interested in browserify which lets you use node-style modules in a browser using require()
statements.
The C# language doesn't have a power operator. However, the .NET Framework offers the Math.Pow
method:
Returns a specified number raised to the specified power.
So your example would look like this:
float Result, Number1, Number2;
Number1 = 2;
Number2 = 2;
Result = Math.Pow(Number1, Number2);
Coming from the Mozilla Documentation, "You can use the delete operator to delete variables declared implicitly but not those declared with the var statement. "
Here is the link: https://developer.mozilla.org/En/Core_JavaScript_1.5_Reference:Operators:Special_Operators:delete_Operator
Change your return type to java.lang.Integer . This way you can safely return null
Add xmlns:ads="http://schemas.android.com/apk/lib/com.google.ads", This will solve your Issue.
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:ads="http://schemas.android.com/apk/lib/com.google.ads"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.app.activities.Initializer" >
<com.google.android.gms.ads.AdView
android:id="@+id/adView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
ads:adSize="BANNER"
ads:adUnitId="ca-app-pub-123456789/123456789"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/hello_world" />
</RelativeLayout>
I would prefer to shelve changes instead of stashing them if I am not sharing my changes elsewhere.
Stashing is a git feature and doesn't give you the option to select specific files or changes inside a file. Shelving can do that but this is an IDE-specific feature, not a git feature:
As you can see I am able to choose to specify which files/lines to include on my shelve. Note that I can't do that with stashing.
Beware using shelves in the IDE may limit the portability of your patches because those changes are not stored in a .git folder.
Some helpful links:
You can specify a width on string fields, e.g.
printf("%-20s", "initialization...");
And then whatever's printed with that field will be blank-padded to the width you indicate.
The -
left-justifies your text in that field.
Assuming your "states" collection is like:
{"name" : "Spain", "cities" : [ { "name" : "Madrid" }, { "name" : null } ] }
{"name" : "France" }
The query to find states with null cities would be:
db.states.find({"cities.name" : {"$eq" : null, "$exists" : true}});
It is a common mistake to query for nulls as:
db.states.find({"cities.name" : null});
because this query will return all documents lacking the key (in our example it will return Spain and France). So, unless you are sure the key is always present you must check that the key exists as in the first query.
List comprehension can shorten things...
win_percentages = [m**2.0 / (m**2.0 + n**2.0) * 100 for m, n in [a[i] for i in NL_East]]
First download json package file from https://github.com/npm/read-package-json and then run npm install from terminal.
This is what worked for me
function showErrorMessage(xhr, status, error) {
if (xhr.responseText != "") {
var jsonResponseText = $.parseJSON(xhr.responseText);
var jsonResponseStatus = '';
var message = '';
$.each(jsonResponseText, function(name, val) {
if (name == "ResponseStatus") {
jsonResponseStatus = $.parseJSON(JSON.stringify(val));
$.each(jsonResponseStatus, function(name2, val2) {
if (name2 == "Message") {
message = val2;
}
});
}
});
alert(message);
}
}
Very good option is update to Internet Explorer 10. You will find very useful developers tools including compatibility with from IE5 to IE 10 including quirks mode. If switch the IE version i menu, the page rendering of the page is changing immediately.
Very good feature of this mode is javascript and HTML (firebug like) debugger, which works in compatibility mode. It means, you can debug javascript in very old IE with the newest debugger, which is very cool feature. You cannot do that with virtual machine. Yes, you can have virtual machine for checking the final result.
I came across this question and thought I would clarify that the lists() method of a eloquent builder object was depreciated in Laravel 5.2 and replaced with pluck().
// <= Laravel 5.1
Word_relation::where('word_one', $word_id)->lists('word_one')->toArray();
// >= Laravel 5.2
Word_relation::where('word_one', $word_id)->pluck('word_one')->toArray();
These methods can also be called on a Collection for example
// <= Laravel 5.1
$collection = Word_relation::where('word_one', $word_id)->get();
$array = $collection->lists('word_one');
// >= Laravel 5.2
$collection = Word_relation::where('word_one', $word_id)->get();
$array = $collection->pluck('word_one');
<div></div>
// <-- $(".root").before("<div></div>");
<div class="root">
// <-- $(".root").prepend("<div></div>");
<div></div>
// <-- $(".root").append("<div></div>");
</div>
// <-- $(".root").after("<div></div>");
<div></div>
The CompileSdkVersion
is the version of the SDK platform your app works with for compilation, etc DURING the development process (you should always use the latest) This is shipped with the API version you are using
You will see this in your build.gradle
file:
targetSdkVersion:
contains the info your app ships with AFTER the development process to the app store that allows it to TARGET the SPECIFIED version of the Android platform
. Depending on the functionality of your app, it can target API versions lower than the current.For instance, you can target API 18 even if the current version is 23.
Take a good look at this official Google page.
If you're on Linux and are using a VIm version 7.3.74 or higher (the version that gets installed in Ubuntu 11.10 onwards satisfies this), you can do
set clipboard=unnamedplus
which will place yanked text into the global clipboard, and allow you to paste from the global clipboard, without having to use any special registers. Unlike ldigas's solution, this will also work on non-gui versions of VIm.
you can use this for your css , mainly use css3 rgba as your background in order to control the opacity and use a background fallback for older browser , either using a solid color or a transparent .png image.
.navbar {
background:rgba(0,0,0,0.5); /* for latest browsers */
background: #000; /* fallback for older browsers */
}
More info: http://css-tricks.com/rgba-browser-support/
Checking if something isn't false... So it's true, just if you're doing something that is quantum physics.
if(!(borrar() === false))
or
if(borrar() === true)
Try writing the file path as "C:\\Users\miche\Documents\school\jaar2\MIK\2.6\vektis_agb_zorgverlener"
i.e with double backslash after the drive as opposed to "C:\Users\miche\Documents\school\jaar2\MIK\2.6\vektis_agb_zorgverlener"
As stated by Taylor L, you can't just "stop" a thread (by calling a simple method) due to the fact that it could leave your system in an unstable state as the external calling thread may not know what is going on inside your thread.
With this said, the best way to "stop" a thread is to have the thread keep an eye on itself and to have it know and understand when it should stop.
I have put together a collection of categories for NSData and NSString which uses solutions found on Jeff LaMarche's blog and some hints by Quinn Taylor here on Stack Overflow.
It uses categories to extend NSData to provide AES256 encryption and also offers an extension of NSString to BASE64-encode encrypted data safely to strings.
Here's an example to show the usage for encrypting strings:
NSString *plainString = @"This string will be encrypted";
NSString *key = @"YourEncryptionKey"; // should be provided by a user
NSLog( @"Original String: %@", plainString );
NSString *encryptedString = [plainString AES256EncryptWithKey:key];
NSLog( @"Encrypted String: %@", encryptedString );
NSLog( @"Decrypted String: %@", [encryptedString AES256DecryptWithKey:key] );
Get the full source code here:
Thanks for all the helpful hints!
-- Michael
Add this Annotation to Entity Class (Model) that works for me this cause lazy loading via the hibernate proxy object.
@JsonIgnoreProperties({"hibernateLazyInitializer", "handler"})
Change your gradle version in project setting: If you are using mac,click File->Project structure,then change gradle version,here:
And check your build.gradle of project,change dependency of gradle,like this:
buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:1.0.1'
}
}
Actually, there are two ways of detecting and acting upon when an input changes in the child component in angular2+ :
@Input() categoryId: string;
ngOnChanges(changes: SimpleChanges) {
this.doSomething(changes.categoryId.currentValue);
// You can also use categoryId.previousValue and
// categoryId.firstChange for comparing old and new values
}
Documentation Links: ngOnChanges, SimpleChanges, SimpleChange
Demo Example: Look at this plunker
private _categoryId: string;
@Input() set categoryId(value: string) {
this._categoryId = value;
this.doSomething(this._categoryId);
}
get categoryId(): string {
return this._categoryId;
}
Documentation Link: Look here.
Demo Example: Look at this plunker.
WHICH APPROACH SHOULD YOU USE?
If your component has several inputs, then, if you use ngOnChanges(), you will get all changes for all the inputs at once within ngOnChanges(). Using this approach, you can also compare current and previous values of the input that has changed and take actions accordingly.
However, if you want to do something when only a particular single input changes (and you don't care about the other inputs), then it might be simpler to use an input property setter. However, this approach does not provide a built in way to compare previous and current values of the changed input (which you can do easily with the ngOnChanges lifecycle method).
EDIT 2017-07-25: ANGULAR CHANGE DETECTION MAY STILL NOT FIRE UNDER SOME CIRCUMSTANCES
Normally, change detection for both setter and ngOnChanges will fire whenever the parent component changes the data it passes to the child, provided that the data is a JS primitive datatype(string, number, boolean). However, in the following scenarios, it will not fire and you have to take extra actions in order to make it work.
If you are using a nested object or array (instead of a JS primitive data type) to pass data from Parent to Child, change detection (using either setter or ngchanges) might not fire, as also mentioned in the answer by user: muetzerich. For solutions look here.
If you are mutating data outside of the angular context (i.e., externally), then angular will not know of the changes. You may have to use ChangeDetectorRef or NgZone in your component for making angular aware of external changes and thereby triggering change detection. Refer to this.
Give this a try:
var map = {"aaa": "rrr", "bbb": "ppp"};
You can't select a sheet in a non-active workbook.
You must first activate the workbook, then you can select the sheet.
workbooks("A").activate
workbooks("A").worksheets("B").select
When you use Activate it automatically activates the workbook.
Note you can select >1 sheet in a workbook:
activeworkbook.sheets(array("sheet1","sheet3")).select
but only one sheet can be Active, and if you activate a sheet which is not part of a multi-sheet selection then those other sheets will become un-selected.
You could also use
$(this).prop('tagName');
if you're using jQuery 1.6 or higher.
I prefer to use an extension method to get the scripts object:
public static IJavaScriptExecutor Scripts(this IWebDriver driver)
{
return (IJavaScriptExecutor)driver;
}
Used as this:
driver.Scripts().ExecuteScript("some script");
It's possible but no heap allocation allowed directly. Heap allocation is performed at runtime. Here are a few examples:
static SOME_INT: i32 = 5;
static SOME_STR: &'static str = "A static string";
static SOME_STRUCT: MyStruct = MyStruct {
number: 10,
string: "Some string",
};
static mut db: Option<sqlite::Connection> = None;
fn main() {
println!("{}", SOME_INT);
println!("{}", SOME_STR);
println!("{}", SOME_STRUCT.number);
println!("{}", SOME_STRUCT.string);
unsafe {
db = Some(open_database());
}
}
struct MyStruct {
number: i32,
string: &'static str,
}
string yourWord = "Derp derp";
Console.WriteLine(new string(yourWord.Select(c => char.IsLetter(c) ? '_' : c).ToArray()));
Yields:
____ ____
The NSString
version (as opposed to Swift String) of replacingCharacters(in: NSRange, with: NSString)
accepts an NSRange
, so one simple solution is to convert String
to NSString
first. The delegate and replacement method names are slightly different in Swift 3 and 2, so depending on which Swift you're using:
func textField(_ textField: UITextField,
shouldChangeCharactersIn range: NSRange,
replacementString string: String) -> Bool {
let nsString = textField.text as NSString?
let newString = nsString?.replacingCharacters(in: range, with: string)
}
func textField(textField: UITextField,
shouldChangeCharactersInRange range: NSRange,
replacementString string: String) -> Bool {
let nsString = textField.text as NSString?
let newString = nsString?.stringByReplacingCharactersInRange(range, withString: string)
}
Posting another alternative to be more complete. When I tried the "pre" based answers, they added extra vertical line breaks as well.
Each tab can be converted to a sequence non-breaking spaces which require no wrapping.
" "
This is not recommended for repeated/extensive use within a page. A div margin/padding approach would appear much cleaner.
.so
files are dynamic libraries. The suffix stands for "shared object", because all the applications that are linked with the library use the same file, rather than making a copy in the resulting executable.
.a
files are static libraries. The suffix stands for "archive", because they're actually just an archive (made with the ar
command -- a predecessor of tar
that's now just used for making libraries) of the original .o object files.
.la
files are text files used by the GNU "libtools" package to describe the files that make up the corresponding library. You can find more information about them in this question: What are libtool's .la file for?
Static and dynamic libraries each have pros and cons.
Static pro: The user always uses the version of the library that you've tested with your application, so there shouldn't be any surprising compatibility problems.
Static con: If a problem is fixed in a library, you need to redistribute your application to take advantage of it. However, unless it's a library that users are likely to update on their own, you'd might need to do this anyway.
Dynamic pro: Your process's memory footprint is smaller, because the memory used for the library is amortized among all the processes using the library.
Dynamic pro: Libraries can be loaded on demand at run time; this is good for plugins, so you don't have to choose the plugins to be used when compiling and installing the software. New plugins can be added on the fly.
Dynamic con: The library might not exist on the system where someone is trying to install the application, or they might have a version that's not compatible with the application. To mitigate this, the application package might need to include a copy of the library, so it can install it if necessary. This is also often mitigated by package managers, which can download and install any necessary dependencies.
Dynamic con: Link-Time Optimization is generally not possible, so there could possibly be efficiency implications in high-performance applications. See the Wikipedia discussion of WPO and LTO.
Dynamic libraries are especially useful for system libraries, like libc
. These libraries often need to include code that's dependent on the specific OS and version, because kernel interfaces have changed. If you link a program with a static system library, it will only run on the version of the OS that this library version was written for. But if you use a dynamic library, it will automatically pick up the library that's installed on the system you run on.
I think it will help somebody.
function isValidDate($thedate) {
$data = [
'separators' => array("/", "-", "."),
'date_array' => '',
'day_index' => '',
'year' => '',
'month' => '',
'day' => '',
'status' => false
];
// loop through to break down the date
foreach ($data['separators'] as $separator) {
$data['date_array'] = explode($separator, $thedate);
if (count($data['date_array']) == 3) {
$data['status'] = true;
break;
}
}
// err, if more than 4 character or not int
if ($data['status']) {
foreach ($data['date_array'] as $value) {
if (strlen($value) > 4 || !is_numeric($value)) {
$data['status'] = false;
break;
}
}
}
// get the year
if ($data['status']) {
if (strlen($data['date_array'][0]) == 4) {
$data['year'] = $data['date_array'][0];
$data['day_index'] = 2;
}elseif (strlen($data['date_array'][2]) == 4) {
$data['year'] = $data['date_array'][2];
$data['day_index'] = 0;
}else {
$data['status'] = false;
}
}
// get the month
if ($data['status']) {
if (strlen($data['date_array'][1]) == 2) {
$data['month'] = $data['date_array'][1];
}else {
$data['status'] = false;
}
}
// get the day
if ($data['status']) {
if (strlen($data['date_array'][$data['day_index']]) == 2) {
$data['day'] = $data['date_array'][$data['day_index']];
}else {
$data['status'] = false;
}
}
// finally validate date
if ($data['status']) {
return checkdate($data['month'] , $data['day'], $data['year']);
}
return false;
}
Could you try this one:
create or replace
procedure point_triangle
IS
BEGIN
FOR thisteam in (select P.FIRSTNAME,P.LASTNAME, SUM(P.PTS) S from PLAYERREGULARSEASON P where P.TEAM = 'IND' group by P.FIRSTNAME, P.LASTNAME order by SUM(P.PTS) DESC)
LOOP
dbms_output.put_line(thisteam.FIRSTNAME|| ' ' || thisteam.LASTNAME || ':' || thisteam.S);
END LOOP;
END;
My async function
const getAllRedis = async (key) => {
let obj = [];
await client.hgetall(key, (err, object) => {
console.log(object);
_.map(object, (ob)=>{
obj.push(JSON.parse(ob));
})
return obj;
// res.send(obj);
});
}
jQuery makes it easy to set any attributes for an element - just use the .attr()
method:
$(document).ready(function() {
$("input").attr({
"max" : 10, // substitute your own
"min" : 2 // values (or variables) here
});
});
The document ready handler is not required if your script block appears after the element(s) you want to manipulate.
Using a selector of "input"
will set the attributes for all inputs though, so really you should have some way to identify the input in question. If you gave it an id you could say:
$("#idHere").attr(...
...or with a class:
$(".classHere").attr(...
Adding the annotation @SpringBootApplication
Before the starter class fixed this problem for me (so in essence, this error message can mean "you don't have a @SpringBootApplication
marked class anywhere, you need at least one)
@SpringBootApplication
public class AppStarter {
public static void main(String[] args) {
SpringApplication.run(AppStarter.class, args);
}
}
Java anonymous class is very similar to Javascript closure, but Java implement that in different way. (check Andersen's answer)
So in order not to confuse the Java Developer with the strange behavior that might occur for those coming from Javascript background. I guess that's why they force us to use final
, this is not the JVM limitation.
Let's look at the Javascript example below:
var add = (function () {
var counter = 0;
var func = function () {
console.log("counter now = " + counter);
counter += 1;
};
counter = 100; // line 1, this one need to be final in Java
return func;
})();
add(); // this will print out 100 in Javascript but 0 in Java
In Javascript, the counter
value will be 100, because there is only one counter
variable from the beginning to end.
But in Java, if there is no final
, it will print out 0
, because while the inner object is being created, the 0
value is copied to the inner class object's hidden properties. (there are two integer variable here, one in the local method, another one in inner class hidden properties)
So any changes after the inner object creation (like line 1), it will not affect the inner object. So it will make confusion between two different outcome and behaviour (between Java and Javascript).
I believe that's why, Java decide to force it to be final, so the data is 'consistent' from the beginning to end.
Your Maven is reading Java version as 1.6.0_65, Where as the pom.xml says the version is 1.7.
Try installing the required verison.
If already installed check your $JAVA_HOME environment variable, it should contain the path of Java JDK 7. If you dont find it, fix your environment variable.
also remove the lines
<fork>true</fork>
<executable>${JAVA_1_7_HOME}/bin/javac</executable>
from the pom.xml
Heap just guarantees that elements on higher levels are greater (for max-heap) or smaller (for min-heap) than elements on lower levels
I love the above answer and putting my comment just more specific to my need and usage. I had to get the n locations list find the distance from each location to specific point say (0,0) and then return the a m locations having smaller distance. I used Priority Queue which is Heap. For finding distances and putting in heap it took me n(log(n)) n-locations log(n) each insertion. Then for getting m with shortest distances it took m(log(n)) m-locations log(n) deletions of heaping up.
I if would have to do this with BST, it would have taken me n(n) worst case insertion.(Say the first value is very smaller and all other comes sequentially longer and longer and the tree spans to right child only or left child in case of smaller and smaller. The min would have taken O(1) time but again I had to balance. So from my situation and all above answers what I got is when you are only after the values at min or max priority basis go for heap.
showInventory(player); // I get the error here.
void showInventory(player& obj) { // By Johnny :D
this means that player is an datatype and showInventory expect an referance to an variable of type player.
so the correct code will be
void showInventory(player& obj) { // By Johnny :D
for(int i = 0; i < 20; i++) {
std::cout << "\nINVENTORY:\n" + obj.getItem(i);
i++;
std::cout << "\t\t\t" + obj.getItem(i) + "\n";
i++;
}
}
players myPlayers[10];
std::string toDo() //BY KEATON
{
std::string commands[5] = // This is the valid list of commands.
{"help", "inv"};
std::string ans;
std::cout << "\nWhat do you wish to do?\n>> ";
std::cin >> ans;
if(ans == commands[0]) {
helpMenu();
return NULL;
}
else if(ans == commands[1]) {
showInventory(myPlayers[0]); // or any other index,also is not necessary to have an array
return NULL;
}
}
I find myself using the following often to get a limited number of revisions out of our huge subversion tree (we're soon reaching svn revision 35000).
# checkout a specific revision
git svn clone -r N svn://some/repo/branch/some-branch
# enter it and get all commits since revision 'N'
cd some-branch
git svn rebase
And a good way to find out where a branch started is to do a svn log
it and find the first one on the branch (the last one listed when doing):
svn log --stop-on-copy svn://some/repo/branch/some-branch
So far I have not really found the hassle worth it in tracking all branches. It takes too much time to clone and svn and git don't work together as good as I would like. I tend to create patch files and apply them on the git clone of another svn branch.
the correct answer is good , but
OutputStreamWriter wr= new OutputStreamWriter(con.getOutputStream());
wr.write(parent.toString());
not work for me , instead of it , use :
byte[] outputBytes = rootJsonObject.getBytes("UTF-8");
OutputStream os = con.getOutputStream();
os.write(outputBytes);
Why not just, a=a(~~a)
or a(~a)=[]
. It's equivalent to the other approaches but certainly less key strokes.