I wrote an informative blog article about this topic: How to Extract IPv4 and IPv6 IP Addresses from Plain Text Using Regex.
In the article there's a detailed guide of the most common different patterns for IPs, often required to be extracted and isolated from plain text using regular expressions.
This guide is based on CodVerter's IP Extractor source code tool for handling IP addresses extraction and detection when necessary.
If you wish to validate and capture IPv4 Address this pattern can do the job:
\b(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)[.]){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\b
or to validate and capture IPv4 Address with Prefix ("slash notation"):
\b(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)[.]){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?/[0-9]{1,2})\b
or to capture subnet mask or wildcard mask:
(255|254|252|248|240|224|192|128|0)[.](255|254|252|248|240|224|192|128|0)[.](255|254|252|248|240|224|192|128|0)[.](255|254|252|248|240|224|192|128|0)
or to filter out subnet mask addresses you do it with regex negative lookahead:
\b((?!(255|254|252|248|240|224|192|128|0)[.](255|254|252|248|240|224|192|128|0)[.](255|254|252|248|240|224|192|128|0)[.](255|254|252|248|240|224|192|128|0)))(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)[.]){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\b
For IPv6 validation you can go to the article link I have added at the top of this answer.
Here is an example for capturing all the common patterns (taken from CodVerter`s IP Extractor Help Sample):
If you wish you can test the IPv4 regex here.
I would go through the packet capture and see if there are any records that I know I should be seeing to validate that the filter is working properly and to assuage any doubts.
That said, please try the following filter and see if you're getting the entries that you think you should be getting:
dns and ip.dst==159.25.78.7 or dns and ip.src==159.57.78.7
add "--psm 7 -c tessedit_char_whitelist=0123456789'" works for me when the image contain's only 1 line.
The image needs to be in the same folder that your html page is in, then create a href to that folder with the picture name at the end. Example:
<img src="C:\users\home\pictures\picture.png"/>
If you are following xml approach, then below code will work.
<security:headers>
<security:frame-options />
<security:cache-control />
<security:content-type-options />
<security:xss-protection />
</security:headers>
<security:http>
I have come accross the above issue. I have solved it as below. Its working fine for me.
Download the 'org.apache.commons.io.jar' file on navigating to [org.apache.commons.io.FileUtils] [ http://www.java2s.com/Code/Jar/o/Downloadorgapachecommonsiojar.htm ]
Extract the downloaded zip file to a specified folder.
Update the project properties by using below navigation Right click on project>Select Properties>Select Java Build Path> Click Libraries tab>Click Add External Class Folder button>Select the folder where zip file is extracted for org.apache.commons.io.FileUtils.zip file.
Now access the File Utils.
to set text in kotlin
textview.text = "write here"
Properties in your object are value types and you can use the shallow copy in such situation like that:
obj myobj2 = (obj)myobj.MemberwiseClone();
But in other situations, like if any members are reference types, then you need Deep Copy. You can get a deep copy of an object using Serialization
and Deserialization
techniques with the help of BinaryFormatter
class:
public static T DeepCopy<T>(T other)
{
using (MemoryStream ms = new MemoryStream())
{
BinaryFormatter formatter = new BinaryFormatter();
formatter.Context = new StreamingContext(StreamingContextStates.Clone);
formatter.Serialize(ms, other);
ms.Position = 0;
return (T)formatter.Deserialize(ms);
}
}
The purpose of setting StreamingContext
:
We can introduce special serialization and deserialization logic to our code with the help of either implementing ISerializable
interface or using built-in attributes like OnDeserialized
, OnDeserializing
, OnSerializing
, OnSerialized
. In all cases StreamingContext
will be passed as an argument to the methods(and to the special constructor in case of ISerializable
interface). With setting ContextState
to Clone
, we are just giving hint to that method about the purpose of the serialization.
Additional Info: (you can also read this article from MSDN)
Shallow copying is creating a new object and then copying the nonstatic fields of the current object to the new object. If a field is a value type, a bit-by-bit copy of the field is performed; for a reference type, the reference is copied but the referred object is not; therefore the original object and its clone refer to the same object.
Deep copy is creating a new object and then copying the nonstatic fields of the current object to the new object. If a field is a value type, a bit-by-bit copy of the field is performed. If a field is a reference type, a new copy of the referred object is performed.
another way to do is get the UriInfo instead of all the QueryParam
Then you will be able to get the queryParam as per needed in your code
@GET
@Path("/query")
public Response getUsers(@Context UriInfo info) {
String param_1 = info.getQueryParameters().getFirst("param_1");
String param_2 = info.getQueryParameters().getFirst("param_2");
return Response ;
}
Just click red button to stop all services on eclipse than re- run application as Spring Boot Application - This worked for me.
This worked for me: Open task manager (of your OS) and kill adb.exe process. Now start adb again, now adb should start normally.
You can use this:
var element = document.getElementById('txt');
var text = element.innerText || element.textContent;
element.innerHTML = text;
Depending on what you need, you can use either element.innerText
or element.textContent
. They differ in many ways. innerText
tries to approximate what would happen if you would select what you see (rendered html) and copy it to the clipboard, while textContent
sort of just strips the html tags and gives you what's left.
innerText
also has compatability with old IE browsers (came from there).
That should be fine as long as you don't require the "remove" method to be atomic.
In other words, if the "do something" checks that the item appears more than once in the list for example, it is possible that the result of that check will be wrong by the time you reach the next line.
Also, make sure you synchronize on the list when iterating:
synchronized(list) {
for (Object o : list) {}
}
As mentioned by Peter Lawrey, CopyOnWriteArrayList can make your life easier and can provide better performance in a highly concurrent environment.
After hours of searching I think my problem was that command yum install php-soap
installs the latest version of soap for the latest php version.
My php version was 7.027
, but latest php version is 7.2
so I had to search for the right soap version and finaly found it HERE!
yum install rh-php70-php-soap
Now php -m | grep -i soap
works, Output: soap
Do not forget to restart httpd
service.
Here's some info if someone comes upon this in 2019.
I think reduce vs map + filter might be somewhat dependent on what you need to loop through. Not sure on this but reduce does seem to be slower.
One thing is for sure - if you're looking for performance improvements the way you write the code is extremely important!
Here a JS perf test that shows the massive improvements when typing out the code fully rather than checking for "falsey" values (e.g. if (string) {...}
) or returning "falsey" values where a boolean is expected.
Hope this helps someone
LENGTH()
does return the string length (just verified). I suppose that your data is padded with blanks - try
SELECT typ, LENGTH(TRIM(t1.typ))
FROM AUTA_VIEW t1;
instead.
As OraNob
mentioned, another cause could be that CHAR
is used in which case LENGTH()
would also return the column width, not the string length. However, the TRIM()
approach also works in this case.
This method is the simplest way for beginners to control Layouts rendering in your ASP.NET MVC application. We can identify the controller and render the Layouts as par controller, to do this we can write our code in _ViewStart file in the root directory of the Views folder. Following is an example shows how it can be done.
@{
var controller = HttpContext.Current.Request.RequestContext.RouteData.Values["Controller"].ToString();
string cLayout = "";
if (controller == "Webmaster")
cLayout = "~/Views/Shared/_WebmasterLayout.cshtml";
else
cLayout = "~/Views/Shared/_Layout.cshtml";
Layout = cLayout;
}
Read Complete Article here "How to Render different Layout in ASP.NET MVC"
Check in Jenkins.xml and update like below
<arguments>-Xrs -Xmx256m -Dhudson.lifecycle=hudson.lifecycle.WindowsServiceLifecycle -jar "%BASE%\jenkins.war" --httpPort=8090</arguments>
Swift 5 Tested in iOS14
Opens the review window with 5 stars selected
private func openReviewInAppStore() {
let rateUrl = "itms-apps://itunes.apple.com/app/idYOURAPPID?action=write-review"
if UIApplication.shared.canOpenURL(URL.init(string: rateUrl)!) {
UIApplication.shared.open(URL.init(string: rateUrl)!, options: [:], completionHandler: nil)
}
}
declare @BirthDate datetime
declare @TotalYear int
declare @TotalMonths int
declare @TotalDays int
declare @TotalWeeks int
declare @TotalHours int
declare @TotalMinute int
declare @TotalSecond int
declare @CurrentDtTime datetime
set @BirthDate='1998/01/05 05:04:00' -- Set Your date here
set @TotalYear= FLOOR(DATEDIFF(DAY, @BirthDate, GETDATE()) / 365.25)
set @TotalMonths= FLOOR(DATEDIFF(DAY,DATEADD(year, @TotalYear,@BirthDate),GetDate()) / 30.436875E)
set @TotalDays= FLOOR(DATEDIFF(DAY, DATEADD(month, @TotalMonths,DATEADD(year,
@TotalYear,@BirthDate)), GETDATE()))
set @CurrentDtTime=CONVERT(datetime,CONVERT(varchar(50), DATEPART(year,
GetDate()))+'/' +CONVERT(varchar(50), DATEPART(MONTH, GetDate()))
+'/'+ CONVERT(varchar(50),DATEPART(DAY, GetDate()))+' '
+ CONVERT(varchar(50),DATEPART(HOUR, @BirthDate))+':'+
CONVERT(varchar(50),DATEPART(MINUTE, @BirthDate))+
':'+ CONVERT(varchar(50),DATEPART(Second, @BirthDate)))
set @TotalHours = DATEDIFF(hour, @CurrentDtTime, GETDATE())
if(@TotalHours < 0)
begin
set @TotalHours = DATEDIFF(hour,DATEADD(Day,-1, @CurrentDtTime), GETDATE())
set @TotalDays= @TotalDays -1
end
set @TotalMinute= DATEPART(MINUTE, GETDATE())-DATEPART(MINUTE, @BirthDate)
if(@TotalMinute < 0)
set @TotalMinute = DATEPART(MINUTE, DATEADD(hour,-1,GETDATE()))+(60-DATEPART(MINUTE,
@BirthDate))
set @TotalSecond= DATEPART(Second, GETDATE())-DATEPART(Second, @BirthDate)
Print 'Your age are'+ CHAR(13)
+ CONVERT(varchar(50), @TotalYear)+' Years, ' +
CONVERT(varchar(50),@TotalMonths) +' Months, ' +
CONVERT(varchar(50),@TotalDays)+' Days, ' +
CONVERT(varchar(50),@TotalHours)+' Hours, ' +
CONVERT(varchar(50),@TotalMinute)+' Minutes, ' +
CONVERT(varchar(50),@TotalSecond)+' Seconds. ' +char(13)+
'Your are born at day of week was - ' + CONVERT(varchar(50),DATENAME(dw ,
@BirthDate ))
+char(13)+char(13)+
+'Your Birthdate to till date your '+ CHAR(13)
+'Years - ' + CONVERT(varchar(50), FLOOR(DATEDIFF(DAY, @BirthDate, GETDATE()) /
365.25))
+' , Months - ' + CONVERT(varchar(50),DATEDIFF(MM,@BirthDate,getdate()))
+' , Weeks - ' + CONVERT(varchar(50),DATEDIFF(wk,@BirthDate,getdate()))
+' , Days - ' + CONVERT(varchar(50),DATEDIFF(dd,@BirthDate,getdate()))+char(13)+
+'Hours - ' + CONVERT(varchar(50),DATEDIFF(HH,@BirthDate,getdate()))
+' , Minutes - ' + CONVERT(varchar(50),DATEDIFF(mi,@BirthDate,getdate()))
+' , Seconds - ' + CONVERT(varchar(50),DATEDIFF(ss,@BirthDate,getdate()))
Output
Your age are
22 Years, 0 Months, 2 Days, 11 Hours, 30 Minutes, 16 Seconds.
Your are born at day of week was - Monday
Your Birthdate to till date your
Years - 22 , Months - 264 , Weeks - 1148 , Days - 8037
Hours - 192899 , Minutes - 11573970 , Seconds - 694438216
On my Mobo (ASRock A320M-HD with Ryzen 3 2200G) I have to:
SR-IOV support: enabled
IOMMU: enabled
SVM: enabled
On the OS enable Hyper V.
Can't you put it in system32 or something like you do with others dll files, so that every program you try to run won't have that problem on your machine?
I just need the path where to put it.
It is kinda annoying to put it in the directory every time I run a program I just built...
Edit: I found the solution:
Extract libgcc_s_dw2-1.dll to a location on your computer. We recommend you to unzip it to the directory of the program that is requesting libgcc_s_dw2-1.dll.
If that doesn't work, you will have to extract libgcc_s_dw2-1.dll to your system directory. By default, this is:
- C:\Windows\System (Windows 95/98/Me)
- C:\WINNT\System32 (Windows NT/2000)
- C:\Windows\System32 (Windows XP, Vista, 7)
If you use a 64-bit version of Windows, you should also place libgcc_s_dw2-1.dll in C:\Windows\SysWOW64\
Make sure overwrite any existing files (but make a backup copy of the original file). Reboot your computer.
If the problem still occurs, try the following:
- Open Windows Start menu and select "Run...".
- Type CMD and press Enter (or if you use Windows ME, type COMMAND)).
- Type regsvr32 libgcc_s_dw2-1.dll and press Enter.
If your processes in same computer, you can simply use stdio.
This is my usage, a web page screenshooter:
var jobProcess = new Process();
jobProcess.StartInfo.FileName = Assembly.GetExecutingAssembly().Location;
jobProcess.StartInfo.Arguments = "job";
jobProcess.StartInfo.CreateNoWindow = false;
jobProcess.StartInfo.UseShellExecute = false;
jobProcess.StartInfo.RedirectStandardInput = true;
jobProcess.StartInfo.RedirectStandardOutput = true;
jobProcess.StartInfo.RedirectStandardError = true;
// Just Console.WriteLine it.
jobProcess.ErrorDataReceived += jp_ErrorDataReceived;
jobProcess.Start();
jobProcess.BeginErrorReadLine();
try
{
jobProcess.StandardInput.WriteLine(url);
var buf = new byte[int.Parse(jobProcess.StandardOutput.ReadLine())];
jobProcess.StandardOutput.BaseStream.Read(buf, 0, buf.Length);
return Deserz<Bitmap>(buf);
}
finally
{
if (jobProcess.HasExited == false)
jobProcess.Kill();
}
Detect args on Main
static void Main(string[] args)
{
if (args.Length == 1 && args[0]=="job")
{
//because stdout has been used by send back, our logs should put to stderr
Log.SetLogOutput(Console.Error);
try
{
var url = Console.ReadLine();
var bmp = new WebPageShooterCr().Shoot(url);
var buf = Serz(bmp);
Console.WriteLine(buf.Length);
System.Threading.Thread.Sleep(100);
using (var o = Console.OpenStandardOutput())
o.Write(buf, 0, buf.Length);
}
catch (Exception ex)
{
Log.E("Err:" + ex.Message);
}
}
//...
}
If you are on Azure you need you can now, you need to have Manag. Studio 2014 and update hotfix: http://blogs.msdn.com/b/sqlreleaseservices/archive/2014/12/18/sql-server-2014-management-studio-updated-support-for-the-latest-azure-sql-database-update-v12-preview.aspx
In python you would use a dictionary.
It is a very important type in python and often used.
You can create one easily by
name = {}
Dictionaries have many methods:
# add entries:
>>> name['first'] = 'John'
>>> name['second'] = 'Doe'
>>> name
{'first': 'John', 'second': 'Doe'}
# you can store all objects and datatypes as value in a dictionary
# as key you can use all objects and datatypes that are hashable
>>> name['list'] = ['list', 'inside', 'dict']
>>> name[1] = 1
>>> name
{'first': 'John', 'second': 'Doe', 1: 1, 'list': ['list', 'inside', 'dict']}
You can not influence the order of a dict.
You can use ansible-vault for using secret keys in playbooks. Define your password in yml.
ex. pass: secret or
user:
pass: secret
name: fake
encrypt your secrets file with :
ansible-vault encrypt /path/to/credential.yml
ansible will ask a password for encrypt it. (i will explain how to use that pass)
And then you can use your variables where you want. No one can read them without vault-key.
Vault key usage:
via passing argument when running playbook.
--ask-vault-pass: secret
or you can save into file like password.txt and hide somewhere. (useful for CI users)
--vault-password-file=/path/to/file.txt
In your case : include vars yml and use your variables.
- include_vars: /path/credential.yml
- name: Add deployment user
action: user name={{user.name}} password={{user.pass}}
If you want to add item to the beginning of the collection you can use prepend:
$item->prepend($product, 'key');
you can create bitmaps for the highes resolution / size your application will run and resize them in the code (at run time)
check this article http://nuvornapps-en.blogspot.com.es/
You name it... Lambda version... :)
using namespace boost::lambda;
std::string s = "a_b_c";
std::cout << std::count_if (s.begin(), s.end(), _1 == '_') << std::endl;
You need several includes... I leave you that as an exercise...
How about:
class MyClass(object):
def __init__(self, filename):
self.filename = filename
self.stats = parse_file(filename)
def parse_file(filename):
#do some parsing
return results_from_parse
By the way, if you have variables named stat1
, stat2
, etc., the situation is begging for a tuple:
stats = (...)
.
So let parse_file
return a tuple, and store the tuple in
self.stats
.
Then, for example, you can access what used to be called stat3
with self.stats[2]
.
<script type="text/javascript" src='http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js?ver=1.3.2'></script> <script type="text/javascript"> $(document).ready(function() { function myDate(){ var now = new Date(); var outHour = now.getHours(); if (outHour >12){newHour = outHour-12;outHour = newHour;} if(outHour<10){document.getElementById('HourDiv').innerHTML="0"+outHour;} else{document.getElementById('HourDiv').innerHTML=outHour;} var outMin = now.getMinutes(); if(outMin<10){document.getElementById('MinutDiv').innerHTML="0"+outMin;} else{document.getElementById('MinutDiv').innerHTML=outMin;} var outSec = now.getSeconds(); if(outSec<10){document.getElementById('SecDiv').innerHTML="0"+outSec;} else{document.getElementById('SecDiv').innerHTML=outSec;}} myDate(); setInterval(function(){ myDate();}, 1000); }); </script> <style> body {font-family:"Comic Sans MS", cursive;} h1 {text-align:center;background: gray;color:#fff;padding:5px;padding-bottom:10px;} #Content {margin:0 auto;border:solid 1px gray;width:140px;display:table;background:gray;} #HourDiv, #MinutDiv, #SecDiv {float:left;color:#fff;width:40px;text-align:center;font-size:25px;} span {float:left;color:#fff;font-size:25px;} </style> <div id="clockDiv"></div> <h1>My jQery Clock</h1> <div id="Content"> <div id="HourDiv"></div><span>:</span><div id="MinutDiv"></div><span>:</span><div id="SecDiv"></div> </div>
You can use following formulas.
For Excel 2007 or later:
=IFERROR(VLOOKUP(D3,List!A:C,3,FALSE),"No Match")
For Excel 2003:
=IF(ISERROR(MATCH(D3,List!A:A, 0)), "No Match", VLOOKUP(D3,List!A:C,3,FALSE))
Note, that
List!A:C
in VLOOKUP
and returns value from column ? 3
VLOOKUP
equals to FALSE
, in that case VLOOKUP
will only find an exact match, and the values in the first column of List!A:C
do not need to be sorted (opposite to case when you're using TRUE
).You can create the headers on the fly (no need to specify delimiter when the delimiter is a comma):
Import-CSV $filepath -Header IP1,IP2,IP3,IP4 | Foreach-Object{
Write-Host $_.IP1
Write-Host $_.IP2
...
}
If you need to know the default collation for a newly created database use:
SELECT SERVERPROPERTY('Collation')
This is the server collation for the SQL Server instance that you are running.
The cv2.warpAffine function takes the shape parameter in reverse order: (col,row) which the answers above do not mention. Here is what worked for me:
import numpy as np
def rotateImage(image, angle):
row,col = image.shape
center=tuple(np.array([row,col])/2)
rot_mat = cv2.getRotationMatrix2D(center,angle,1.0)
new_image = cv2.warpAffine(image, rot_mat, (col,row))
return new_image
You can still use the ExcelFile class (and the sheet_names
attribute):
xl = pd.ExcelFile('foo.xls')
xl.sheet_names # see all sheet names
xl.parse(sheet_name) # read a specific sheet to DataFrame
see docs for parse for more options...
try to use li can be more even
<ul>
<li><a href="#one" data-role="button" role="button">back</a></li>
</ul>
Add following option in jboss in bin/standalone.conf.bat
set "JAVA_OPTS=-Xms1G -Xmx1G -XX:MetaspaceSize=96M -XX:MaxMetaspaceSize=1024m"
You can using SXSSFWorkbook implementation of Workbook, if you use style in your excel ,You can caching style by Flyweight Pattern
to improve your performance.
HEAD
is not the latest revision, it's the current revision. Usually, it's the latest revision of the current branch, but it doesn't have to be.
master
is a name commonly given to the main branch, but it could be called anything else (or there could be no main branch).
origin
is a name commonly given to the main remote. remote is another repository that you can pull from and push to. Usually it's on some server, like github.
I'm assuming your column is 38 characters in length, so you want to truncate itemdescription
to fit within the database. A utility function like the following should do what you want:
/**
* Truncates s to fit within len. If s is null, null is returned.
**/
public String truncate(String s, int len) {
if (s == null) return null;
return s.substring(0, Math.min(len, s.length()));
}
then you just call it like so:
String value = "_";
if (itemdescription != null && itemdescription.length() > 0) {
value = truncate(itemdescription, 38);
}
pstmt2.setString(3, value);
In response to your first question: Yes, you have to run a server app to send the messages, as well as a client app to receive them.
In response to your second question: Yes, every application needs its own API key. This key is for your server app, not the client.
Do you want compare VBA with VB-Classic (VB6..) or VB.NET?
VBA (Visual Basic for Applications) is a vb-classic-based script language embedded in Microsoft Office applications. I think it's language features are similar to those of VB5 (it just lacks some few builtin functions), but:
You have access to the office document you wrote the VBA-script for and so you can e.g.
Example: Set the value of an excel-cell
ActiveSheet.Cells("A1").Value = "Foo"
VBC and -.NET are no script languages. You use them to write standalone-applications with separate IDE's which you can't do with VBA (VBA-scripts just "exist" in Office)
VBA has nothing to do with VB.NET (they just have a similar syntax).
I used this approach using logic instead of math. It's precise and quick. The parameters are the year, month and day of the person's birthday. It returns the person's age as an integer.
function calculateAge(year, month, day) {
var currentDate = new Date();
var currentYear = currentDate.getFullYear();
var currentMonth = currentDate.getUTCMonth() + 1;
var currentDay = currentDate.getUTCDate();
// You need to treat the cases where the year, month or day hasn't arrived yet.
var age = currentYear - year;
if (currentMonth > month) {
return age;
} else {
if (currentDay >= day) {
return age;
} else {
age--;
return age;
}
}
}
public class SubSubClass extends SubClass {
@Override
public void print() {
super.superPrint();
}
public static void main(String[] args) {
new SubSubClass().print();
}
}
class SuperClass {
public void print() {
System.out.println("Printed in the GrandDad");
}
}
class SubClass extends SuperClass {
public void superPrint() {
super.print();
}
}
Output: Printed in the GrandDad
I red all the stuff above, about 40 other pages with c++ in it like this and watched the video from Stephan T. Lavavej "STL" and still wasn't sure how random numbers works in praxis so I took a full Sunday to figure out what its all about and how it works and can be used.
In my opinion STL is right about "not using srand anymore" and he explained it well in the video 2. He also recommend to use:
a) void random_device_uniform()
-- for encrypted generation but slower (from my example)
b) the examples with mt19937
-- faster, ability to create seeds, not encrypted
I pulled out all claimed c++11 books I have access to and found f.e. that german Authors like Breymann (2015) still use a clone of
srand( time( 0 ) );
srand( static_cast<unsigned int>(time(nullptr))); or
srand( static_cast<unsigned int>(time(NULL))); or
just with <random>
instead of <time> and <cstdlib>
#includings - so be careful to learn just from one book :).
Meaning - that shouldn't be used since c++11 because:
Programs often need a source of random numbers. Prior to the new standard, both C and C++ relied on a simple C library function named rand. That function produces pseudorandom integers that are uniformly distributed in the range from 0 to a system- dependent maximum value that is at least 32767. The rand function has several problems: Many, if not most, programs need random numbers in a different range from the one produced by rand. Some applications require random floating-point numbers. Some programs need numbers that reflect a nonuniform distribution. Programmers often introduce nonrandomness when they try to transform the range, type, or distribution of the numbers generated by rand. (quote from Lippmans C++ primer fifth edition 2012)
I finally found a the best explaination out of 20 books in Bjarne Stroustrups newer ones - and he should know his stuff - in "A tour of C++ 2019", "Programming Principles and Practice Using C++ 2016" and "The C++ Programming Language 4th edition 2014" and also some examples in "Lippmans C++ primer fifth edition 2012":
And it is really simple because a random number generator consists of two parts: (1) an engine that produces a sequence of random or pseudo-random values. (2) a distribution that maps those values into a mathematical distribution in a range.
Despite the opinion of Microsofts STL guy, Bjarne Stroustrups writes:
In , the standard library provides random number engines and distributions (§24.7). By default use the default_random_engine , which is chosen for wide applicability and low cost.
The void die_roll()
Example is from Bjarne Stroustrups - good idea generating engine and distribution with using
(more bout that here).
To be able to make practical use of the random number generators provided by the standard library in <random>
here some executable code with different examples reduced to the least necessary that hopefully safe time and money for you guys:
#include <random> //random engine, random distribution
#include <iostream> //cout
#include <functional> //to use bind
using namespace std;
void space() //for visibility reasons if you execute the stuff
{
cout << "\n" << endl;
for (int i = 0; i < 20; ++i)
cout << "###";
cout << "\n" << endl;
}
void uniform_default()
{
// uniformly distributed from 0 to 6 inclusive
uniform_int_distribution<size_t> u (0, 6);
default_random_engine e; // generates unsigned random integers
for (size_t i = 0; i < 10; ++i)
// u uses e as a source of numbers
// each call returns a uniformly distributed value in the specified range
cout << u(e) << " ";
}
void random_device_uniform()
{
space();
cout << "random device & uniform_int_distribution" << endl;
random_device engn;
uniform_int_distribution<size_t> dist(1, 6);
for (int i=0; i<10; ++i)
cout << dist(engn) << ' ';
}
void die_roll()
{
space();
cout << "default_random_engine and Uniform_int_distribution" << endl;
using my_engine = default_random_engine;
using my_distribution = uniform_int_distribution<size_t>;
my_engine rd {};
my_distribution one_to_six {1, 6};
auto die = bind(one_to_six,rd); // the default engine for (int i = 0; i<10; ++i)
for (int i = 0; i <10; ++i)
cout << die() << ' ';
}
void uniform_default_int()
{
space();
cout << "uniform default int" << endl;
default_random_engine engn;
uniform_int_distribution<size_t> dist(1, 6);
for (int i = 0; i<10; ++i)
cout << dist(engn) << ' ';
}
void mersenne_twister_engine_seed()
{
space();
cout << "mersenne twister engine with seed 1234" << endl;
//mt19937 dist (1234); //for 32 bit systems
mt19937_64 dist (1234); //for 64 bit systems
for (int i = 0; i<10; ++i)
cout << dist() << ' ';
}
void random_seed_mt19937_2()
{
space();
cout << "mersenne twister split up in two with seed 1234" << endl;
mt19937 dist(1234);
mt19937 engn(dist);
for (int i = 0; i < 10; ++i)
cout << dist() << ' ';
cout << endl;
for (int j = 0; j < 10; ++j)
cout << engn() << ' ';
}
int main()
{
uniform_default();
random_device_uniform();
die_roll();
random_device_uniform();
mersenne_twister_engine_seed();
random_seed_mt19937_2();
return 0;
}
I think that adds it all up and like I said, it took me a bunch of reading and time to destill it to that examples - if you have further stuff about number generation I am happy to hear about that via pm or in the comment section and will add it if necessary or edit this post. Bool
In a simular issue I had the desired dependency declared with scope provided. With this approach the transitive dependencies are fetched but are NOT included in the package phase, which is what you want. I also like this solution in terms of maintenance, because there is no pom, or custom pom as in whaley's solution, needed to maintain; you only need to provide the specific dependency in the container and be done
What image do you want to hide? Assuming all images, the following should work:
$("img").hide();
Otherwise, using selectors, you could find all images that are child elements of the containing div, and hide those.
However, i strongly recommend you read the Jquery docs, you could have figured it out yourself: http://docs.jquery.com/Main_Page
ZPL is the correct way to go. In most cases it is correct to use a driver that abstracts to GDI commands; however Zebra label printers are a special case. The best way to print to a Zebra printer is to generate ZPL directly. Note that the actual printer driver for a Zebra printer is a "plain text" printer - there is not a "driver" that could be updated or changed in the sense we think of most printers having drivers. It's just a driver in the absolute minimalist sense.
If you are looking for a popup in the page, that is not a new browser window, then I would take a look at the various "LightBox" implementations in Javascript.
Just use git cherry
to pick all commits in the branch newFeature42
for example:
git cherry -v master newFeature42
box-shadow: inset 1px 2000px rgba(208, 208, 208, 0.54);
First of all, you should make an HTML form containing a file input element. You also need to set the form's enctype attribute to multipart/form-data:
<form method="post" enctype="multipart/form-data" action="/upload">
<input type="file" name="file">
<input type="submit" value="Submit">
</form>
Assuming the form is defined in index.html stored in a directory named public relative to where your script is located, you can serve it this way:
const http = require("http");
const path = require("path");
const fs = require("fs");
const express = require("express");
const app = express();
const httpServer = http.createServer(app);
const PORT = process.env.PORT || 3000;
httpServer.listen(PORT, () => {
console.log(`Server is listening on port ${PORT}`);
});
// put the HTML file containing your form in a directory named "public" (relative to where this script is located)
app.get("/", express.static(path.join(__dirname, "./public")));
Once that's done, users will be able to upload files to your server via that form. But to reassemble the uploaded file in your application, you'll need to parse the request body (as multipart form data).
In Express 3.x you could use express.bodyParser
middleware to handle multipart forms but as of Express 4.x, there's no body parser bundled with the framework. Luckily, you can choose from one of the many available multipart/form-data parsers out there. Here, I'll be using multer:
You need to define a route to handle form posts:
const multer = require("multer");
const handleError = (err, res) => {
res
.status(500)
.contentType("text/plain")
.end("Oops! Something went wrong!");
};
const upload = multer({
dest: "/path/to/temporary/directory/to/store/uploaded/files"
// you might also want to set some limits: https://github.com/expressjs/multer#limits
});
app.post(
"/upload",
upload.single("file" /* name attribute of <file> element in your form */),
(req, res) => {
const tempPath = req.file.path;
const targetPath = path.join(__dirname, "./uploads/image.png");
if (path.extname(req.file.originalname).toLowerCase() === ".png") {
fs.rename(tempPath, targetPath, err => {
if (err) return handleError(err, res);
res
.status(200)
.contentType("text/plain")
.end("File uploaded!");
});
} else {
fs.unlink(tempPath, err => {
if (err) return handleError(err, res);
res
.status(403)
.contentType("text/plain")
.end("Only .png files are allowed!");
});
}
}
);
In the example above, .png files posted to /upload will be saved to uploaded directory relative to where the script is located.
In order to show the uploaded image, assuming you already have an HTML page containing an img element:
<img src="/image.png" />
you can define another route in your express app and use res.sendFile
to serve the stored image:
app.get("/image.png", (req, res) => {
res.sendFile(path.join(__dirname, "./uploads/image.png"));
});
Just use \" instead ", it should resolve the issue.
A little example for JUnit 5 Jupiter, the "RunWith" was removed you now need to use the Extensions using the "@ExtendWith" Annotation.
@ExtendWith(MockitoExtension.class)
class FooTest {
@InjectMocks
ClassUnderTest test = new ClassUnderTest();
@Spy
SomeInject bla = new SomeInject();
}
$uri = $_SERVER['REQUEST_URI'];
This will give you the requested directory and file name. If you use mod_rewrite, this is extremely useful because it tells you what page the user was looking at.
If you need the actual file name, you might want to try either $_SERVER['PHP_SELF']
, the magic constant __FILE__
, or $_SERVER['SCRIPT_FILENAME']
. The latter 2 give you the complete path (from the root of the server), rather than just the root of your website. They are useful for includes and such.
$_SERVER['PHP_SELF']
gives you the file name relative to the root of the website.
$relative_path = $_SERVER['PHP_SELF'];
$complete_path = __FILE__;
$complete_path = $_SERVER['SCRIPT_FILENAME'];
THIS ANSWER IS FOR ANIMATIONS ONLY
If you wanna implement the AND logic, you should use MultiTrigger, here is an example:
Suppose we want to do some actions if the property Text="" (empty string) AND IsKeyboardFocused="False", then your code should look like the following:
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="Text" Value="" />
<Condition Property="IsKeyboardFocused" Value="False" />
</MultiTrigger.Conditions>
<MultiTrigger.EnterActions>
<!-- Your actions here -->
</MultiTrigger.EnterActions>
</MultiTrigger>
If you wanna implement the OR logic, there are couple of ways, and it depends on what you try to do:
The first option is to use multiple Triggers.
So, suppose you wanna do something if either Text="" OR IsKeyboardFocused="False",
then your code should look something like this:
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Opacity" TargetName="border" Value="0.56"/>
</Trigger>
<Trigger Property="IsMouseOver" Value="true">
<Setter Property="BorderBrush" TargetName="border"
Value="{StaticResource TextBox.MouseOver.Border}"/>
</Trigger>
But the problem in this is what will I do if i wanna do something if either Text ISN'T null OR IsKeyboard="True"? This can be achieved by the second approach:
Recall De Morgan's rule, that says !(!x && !y) = x || y.
So we'll use it to solve the previous problem, by writing a multi trigger that it's triggered when Text="" and IsKeyboard="True", and we'll do our actions in EXIT ACTIONS, like this:
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="Text" Value="" />
<Condition Property="IsKeyboardFocused" Value="False" />
</MultiTrigger.Conditions>
<MultiTrigger.ExitActions>
<!-- Do something here -->
</MultiTrigger.ExitActions>
</MultiTrigger>
Here's my hacky workaround - generate a console application (.NET Framework) that reads its own name and arguments, and then calls dotnet [nameOfExe].dll [args]
.
Of course this assumes that .NET is installed on the target machine.
Here's the code. Feel free to copy!
using System;
using System.Diagnostics;
using System.Text;
namespace dotNetLauncher
{
class Program
{
/*
If you make .NET Core applications, they have to be launched like .NET blah.dll args here
This is a convenience EXE file that launches .NET Core applications via name.exe
Just rename the output exe to the name of the .NET Core DLL file you wish to launch
*/
static void Main(string[] args)
{
var exePath = AppDomain.CurrentDomain.BaseDirectory;
var exeName = AppDomain.CurrentDomain.FriendlyName;
var assemblyName = exeName.Substring(0, exeName.Length - 4);
StringBuilder passInArgs = new StringBuilder();
foreach(var arg in args)
{
bool needsSurroundingQuotes = false;
if (arg.Contains(" ") || arg.Contains("\""))
{
passInArgs.Append("\"");
needsSurroundingQuotes = true;
}
passInArgs.Append(arg.Replace("\"","\"\""));
if (needsSurroundingQuotes)
{
passInArgs.Append("\"");
}
passInArgs.Append(" ");
}
string callingArgs = $"\"{exePath}{assemblyName}.dll\" {passInArgs.ToString().Trim()}";
var p = new Process
{
StartInfo = new ProcessStartInfo("dotnet", callingArgs)
{
UseShellExecute = false
}
};
p.Start();
p.WaitForExit();
}
}
}
A static method belongs to the class itself and a non-static (aka instance) method belongs to each object that is generated from that class. If your method does something that doesn't depend on the individual characteristics of its class, make it static (it will make the program's footprint smaller). Otherwise, it should be non-static.
Example:
class Foo {
int i;
public Foo(int i) {
this.i = i;
}
public static String method1() {
return "An example string that doesn't depend on i (an instance variable)";
}
public int method2() {
return this.i + 1; // Depends on i
}
}
You can call static methods like this: Foo.method1()
. If you try that with method2, it will fail. But this will work: Foo bar = new Foo(1); bar.method2();
var lat = homeMarker.getPosition().lat();
var lng = homeMarker.getPosition().lng();
See the google.maps.LatLng docs and google.maps.Marker getPosition()
.
Download MSBuild with the link from @Nicodemeus answer was OK, yet the installation was broken until I've added these keys into a register:
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\MSBuild\ToolsVersions\12.0]
"VCTargetsPath11"="$([MSBuild]::ValueOrDefault('$(VCTargetsPath11)','$(MSBuildExtensionsPath32)\\Microsoft.Cpp\\v4.0\\V110\\'))"
"VCTargetsPath"="$([MSBuild]::ValueOrDefault('$(VCTargetsPath)','$(MSBuildExtensionsPath32)\\Microsoft.Cpp\\v4.0\\V110\\'))"
The verified solution doesn't work for me, since my notebook is not in my sys.path. This works however;
import os,sys
sys.path.insert(1, os.path.join(os.getcwd() , '..'))
I think important to emphasize - using Except method will return you items who are in the first without the items in the second one only. It does not return those elements in second that do not appear in first.
var list1 = new List<int> { 1, 2, 3, 4, 5};
var list2 = new List<int> { 3, 4, 5, 6, 7 };
var list3 = list1.Except(list2).ToList(); //list3 contains only 1, 2
But if you want get real difference between two lists:
Items who are in the first without the items in the second one and items who are in the second without the items in the first one.
You need using Except twice:
var list1 = new List<int> { 1, 2, 3, 4, 5};
var list2 = new List<int> { 3, 4, 5, 6, 7 };
var list3 = list1.Except(list2); //list3 contains only 1, 2
var list4 = list2.Except(list1); //list4 contains only 6, 7
var resultList = list3.Concat(list4).ToList(); //resultList contains 1, 2, 6, 7
Or you can use SymmetricExceptWith method of HashSet. But it changes the set on which called:
var list1 = new List<int> { 1, 2, 3, 4, 5};
var list2 = new List<int> { 3, 4, 5, 6, 7 };
var list1Set = list1.ToHashSet(); //.net framework 4.7.2 and .net core 2.0 and above otherwise new HashSet(list1)
list1Set.SymmetricExceptWith(list2);
var resultList = list1Set.ToList(); //resultList contains 1, 2, 6, 7
I don't think it's necessary to use semi-quotes around the variables, try:
curl -XPOST 'http://localhost/Service' -d "path=%2fxyz%2fpqr%2ftest%2f&fileName=1.doc"
%2f
is the escape code for a /
.
http://www.december.com/html/spec/esccodes.html
Also, do you need to specify a port? ( just checking :) )
Here's the list of all Win32 error codes. You can use this page to lookup the error code mentioned in IIS logs:
http://msdn.microsoft.com/en-us/library/ms681381.aspx
You can also use command line utility net
to find information about a Win32 error code. The syntax would be:
net helpmsg Win32_Status_Code
It's true that Messagebox.show("dd");
is not a part of using System.Web;
,
I felt the same situation for most of time. If you want to do this then do the following steps.
go for add reference, then choose .NET tab
And select, System.windows.forms (press 's' to find quickly)
u can get the namespace, now u can use Messagebox.show("dd");
But I recommend to go with javascript alert for this.
Here's what I had to do to setup basic auth on Ubuntu 14.04 (didn't find a guide anywhere else)
/etc/squid3/squid.conf
instead of the super bloated default config file
auth_param basic program /usr/lib/squid3/basic_ncsa_auth /etc/squid3/passwords
auth_param basic realm proxy
acl authenticated proxy_auth REQUIRED
http_access allow authenticated
# Choose the port you want. Below we set it to default 3128.
http_port 3128
Please note the basic_ncsa_auth program instead of the old ncsa_auth
For squid 2.x you need to edit /etc/squid/squid.conf
file and place:
auth_param basic program /usr/lib/squid/digest_pw_auth /etc/squid/passwords
auth_param basic realm proxy
acl authenticated proxy_auth REQUIRED
http_access allow authenticated
sudo htpasswd -c /etc/squid3/passwords username_you_like
and enter a password twice for the chosen username then
sudo service squid3 restart
sudo htpasswd -c /etc/squid/passwords username_you_like
and enter a password twice for the chosen username then
sudo service squid restart
For the many people that asked me: the 2 tools produce different file formats:
htdigest
stores the password in plain text.htpasswd
stores the password hashed (various hashing algos are available)Despite this difference in format basic_ncsa_auth
will still be able to parse a password file generated with htdigest
. Hence you can alternatively use:
sudo htdigest -c /etc/squid3/passwords realm_you_like username_you_like
Beware that this approach is empirical, undocumented and may not be supported by future versions of Squid.
On Ubuntu 14.04 htdigest
and htpasswd
are both available in the [apache2-utils][1]
package.
Similar as above applies, but file paths are different.
Install squid
brew install squid
Start squid service
brew services start squid
Squid config file is stored at /usr/local/etc/squid.conf
.
Comment or remove following line:
http_access allow localnet
Then similar to linux config (but with updated paths) add this:
auth_param basic program /usr/local/Cellar/squid/4.8/libexec/basic_ncsa_auth /usr/local/etc/squid_passwords
auth_param basic realm proxy
acl authenticated proxy_auth REQUIRED
http_access allow authenticated
Note that path to basic_ncsa_auth
may be different since it depends on installed version when using brew
, you can verify this with ls /usr/local/Cellar/squid/
. Also note that you should add the above just bellow the following section:
#
# INSERT YOUR OWN RULE(S) HERE TO ALLOW ACCESS FROM YOUR CLIENTS
#
Now generate yourself a user:password basic auth credential (note: htpasswd
and htdigest
are also both available on MacOS)
htpasswd -c /usr/local/etc/squid_passwords username_you_like
Restart the squid service
brew services restart squid
Call the pd.DataFrame
constructor directly:
df = pd.DataFrame(table, columns=headers)
df
Heading1 Heading2
0 1 2
1 3 4
The actual problem of this error has nothing to do with file_get_content, the problem is the requested url if the url is not throwing content of the page and redirecting the request to some where else file_get_content says "Failed to open stream", just before file_get_contents check whether the url is working and not redirecting, here is the code:
function checkRedirect404($url) {
$ch = curl_init();
curl_setopt($ch, CURLOPT_HEADER, true);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_URL, $url);
$out = curl_exec($ch);
// line endings is the wonkiest piece of this whole thing
$out = str_replace("\r", "", $out);
// only look at the headers
$headers_end = strpos($out, "\n\n");
if( $headers_end !== false ) {
$out = substr($out, 0, $headers_end);
}
$headers = explode("\n", $out);
foreach($headers as $header) {
if( substr($header, 0, 10) == "Location: " ) {
$target = substr($header, 10);
//echo "Redirects: $target<br>";
return true;
}
}
return false;
}
Try something like below to achieve your desired result
input {
max-width: 100%;
}
make sure you are not including the jquery code between the
< script > < /script >
If so remove that and code will work fine, It worked in my case.
Below the real example how to take last 3 elements from a collection (array):
// split address by spaces into array
string[] adrParts = adr.Split(new string[] { " " },StringSplitOptions.RemoveEmptyEntries);
// take only 3 last items in array
adrParts = adrParts.SkipWhile((value, index) => { return adrParts.Length - index > 3; }).ToArray();
To generate a random number between min and max, use:
int randNum = rand()%(max-min + 1) + min;
(Includes max and min)
When Python parses the body of a function definition and encounters an assignment such as
feed = ...
Python interprets feed
as a local variable by default. If you do not wish for it to be a local variable, you must put
global feed
in the function definition. The global statement does not have to be at the beginning of the function definition, but that is where it is usually placed. Wherever it is placed, the global declaration makes feed
a global variable everywhere in the function.
Without the global statement, since feed
is taken to be a local variable, when Python executes
feed = feed + 1,
Python evaluates the right-hand side first and tries to look up the value of feed. The first time through it finds feed
is undefined. Hence the error.
The shortest way to patch up the code is to add global feed
to the beginning of onLoadFinished
. The nicer way is to use a class:
class Page(object):
def __init__(self):
self.feed = 0
def onLoadFinished(self, result):
...
self.feed += 1
The problem with having functions which mutate global variables is that it makes it harder to grok your code. Functions are no longer isolated units. Their interaction extends to everything that affects or is affected by the global variable. Thus it makes larger programs harder to understand.
By avoiding mutating globals, in the long run your code will be easier to understand, test and maintain.
I would generally prefer something a bit simpler, like activate
/deactivate
sub-resource (linked by a Link
header with rel=service
).
POST /groups/api/v1/groups/{group id}/activate
or
POST /groups/api/v1/groups/{group id}/deactivate
For the consumer, this interface is dead-simple, and it follows REST principles without bogging you down in conceptualizing "activations" as individual resources.
The best way to access files from resource folder inside a jar is it to use the InputStream via getResourceAsStream
. If you still need a the resource as a file instance you can copy the resource as a stream into a temporary file (the temp file will be deleted when the JVM exits):
public static File getResourceAsFile(String resourcePath) {
try {
InputStream in = ClassLoader.getSystemClassLoader().getResourceAsStream(resourcePath);
if (in == null) {
return null;
}
File tempFile = File.createTempFile(String.valueOf(in.hashCode()), ".tmp");
tempFile.deleteOnExit();
try (FileOutputStream out = new FileOutputStream(tempFile)) {
//copy stream
byte[] buffer = new byte[1024];
int bytesRead;
while ((bytesRead = in.read(buffer)) != -1) {
out.write(buffer, 0, bytesRead);
}
}
return tempFile;
} catch (IOException e) {
e.printStackTrace();
return null;
}
}
If you want to delete lines 5 through 10 and 12:
sed -e '5,10d;12d' file
This will print the results to the screen. If you want to save the results to the same file:
sed -i.bak -e '5,10d;12d' file
This will back the file up to file.bak
, and delete the given lines.
Note: Line numbers start at 1. The first line of the file is 1, not 0.
You can simply write a if condition inside server {} block:
server {
if ($host = mydomain.com) {
return 301 http://www.adifferentdomain.com;
}
}
This is the progress bar I have used.
<ProgressBar
android:padding="@dimen/dimen_5"
android:layout_below="@+id/txt_chklist_progress"
android:id="@+id/pb_media_progress"
style="@style/MyProgressBar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:progress="70"
android:scaleY="5"
android:max="100"
android:progressBackgroundTint="@color/white"
android:progressTint="@color/green_above_avg" />
And this is my style tag
<style name="MyProgressBar" parent="@style/Widget.AppCompat.ProgressBar.Horizontal">
<item name="android:progressBackgroundTint">@color/white</item>
<item name="android:progressTint">@color/green_above_avg</item>
</style>
The easiest way to do so is using jQuery and animate.css animation library.
Javascript
/* --- Show DIV --- */
$( '.example' ).removeClass( 'fadeOutRight' ).show().addClass( 'fadeInRight' );
/* --- Hide DIV --- */
$( '.example' ).removeClass( 'fadeInRight' ).addClass( 'fadeOutRight' );
HTML
<div class="example">Some text over here.</div>
Easy enough to implement. Just don't forget to include the animate.css file in the header :)
Here's the yaml dictConfig way recommended for 3.2 & later.
In log cfg.yml
:
version: 1
disable_existing_loggers: true
formatters:
default:
format: "[%(process)d] %(name)s(%(funcName)s:%(lineno)s) - %(levelname)s: %(message)s"
handlers:
syslog:
class: logging.handlers.SysLogHandler
level: DEBUG
formatter: default
address: /dev/log
facility: local0
rotating_file:
class: logging.handlers.RotatingFileHandler
level: DEBUG
formatter: default
filename: rotating.log
maxBytes: 10485760 # 10MB
backupCount: 20
encoding: utf8
root:
level: DEBUG
handlers: [syslog, rotating_file]
propogate: yes
loggers:
main:
level: DEBUG
handlers: [syslog, rotating_file]
propogate: yes
Load the config using:
log_config = yaml.safe_load(open('cfg.yml'))
logging.config.dictConfig(log_config)
Configured both syslog & a direct file. Note that the /dev/log
is OS specific.
Go simply with Zoo, it will simply replace all NA values with mean of the column values:
library(zoo)
na.aggregate(data)
Perform multiple queries or use embedded documents or look at "database references".
You don't want git revert
. That undoes a previous commit. You want git checkout
to get git's version of the file from master.
git checkout -- filename.txt
In general, when you want to perform a git operation on a single file, use -- filename
.
2020 Update
Git introduced a new command git restore
in version 2.23.0
. Therefore, if you have git version 2.23.0+
, you can simply git restore filename.txt
- which does the same thing as git checkout -- filename.txt
. The docs for this command do note that it is currently experimental.
When I was completely desperate, I did the following, that allowed me to find official zipalign.exe. The short answer is to use the link from official (but not public :-) part of of the site:
https://dl.google.com/android/repository/build-tools_r28-rc1-windows.zip
If you use this recepy after 2018, you probably need the full explanation:
Open Android Studio and go
Android Studio->Tools->Android->SDK Manager->Android SDK->SDK update site
Write in text editor link and open it in the browser. In my case the first link worked for me:
https://dl.google.com/android/repository/repository2-1.xml
Look for the latest package build-tools. In my case, it was build-tools_r28-rc1-windows.zip, but you can find the latest in your time
Ctrl+F build-tools_
Substitute in the URL the last part with the found package name like I did:
https://dl.google.com/android/repository/build-tools_r28-rc1-windows.zip
Download the package, unzip it and fortunately find official file:
zipalign.exe
If it helps you, your feedback is wellcome.
if(jQuery('#frmTest input[type=checkbox]:checked').length) { … }
Note that the .value
attribute is a JavaScript feature. If you want to use jQuery, use:
$('#pid').val()
to get the value, and:
$('#pid').val('value')
to set it.
Regarding your second issue, I have never tried automatically setting the HTML value using the load
method. For sure, you can do something like this:
$('#subtotal').load( 'compz.php?prodid=' + x + '&qbuys=' + y, function(response){ $('#subtotal').val(response);
});
Note that the code above is untested.
Your format specifier is incorrect. From the printf()
man page on my machine:
0
A zero '0
' character indicating that zero-padding should be used rather than blank-padding. A '-
' overrides a '0
' if both are used;Field Width: An optional digit string specifying a field width; if the output string has fewer characters than the field width it will be blank-padded on the left (or right, if the left-adjustment indicator has been given) to make up the field width (note that a leading zero is a flag, but an embedded zero is part of a field width);
Precision: An optional period, '
.
', followed by an optional digit string giving a precision which specifies the number of digits to appear after the decimal point, for e and f formats, or the maximum number of characters to be printed from a string; if the digit string is missing, the precision is treated as zero;
For your case, your format would be %09.3f
:
#include <stdio.h>
int main(int argc, char **argv)
{
printf("%09.3f\n", 4917.24);
return 0;
}
Output:
$ make testapp
cc testapp.c -o testapp
$ ./testapp
04917.240
Note that this answer is conditional on your embedded system having a printf()
implementation that is standard-compliant for these details - many embedded environments do not have such an implementation.
Using Date object guarantees that. For eg if you try to create April 31st
:
new Date(2014,3,31) // Thu May 01 2014 00:00:00
Please note that it's zero indexed, so Jan. is
0
, Feb. is1
etc.
You can download the list here: ftp://ftp.cis.upenn.edu/pub/treebank/doc/tagguide.ps.gz. It includes confusing parts of speech, capitalization, and other conventions. Also, wikipedia has an interesting section similar to this. Section: Part-of-speech tags used.
There are another scenario which was happening for my customers. This was happening normally in certain time because of shift changes and users needed to login with different user. Here is a scenario which Anti forgery system protects system by generation this error:
1- Once close/open your browser. 2- Go to your website and login with "User A" 3- Open new Tab in browser and enter the same address site. (You can see your site Home page without any authentication) 4- Logout from your site and Login with another User(User B) in second tab. 5- Now go back to the first Tab which you logged in by "User A". You can still see the page but any action in this tab will make the error. Because your cookie is already updated by "User B" and you are trying to send a request by an invalid user. (User A)
Since ECMA-/Javascript is all about Objects
and Contexts
(which, are also somekind of Object), every variable is stored in a such called Variable- (or in case of a Function, Activation Object).
So if you create variables like this:
var a = 1,
b = 2,
c = 3;
In the Global scope (= NO function context), you implicitly write those variables into the Global object (= window
in a browser).
Those can get accessed by using the "dot" or "bracket" notation:
var name = window.a;
or
var name = window['a'];
This only works for the global object in this particular instance, because the Variable Object of the Global Object is the window
object itself. Within the Context of a function, you don't have direct access to the Activation Object. For instance:
function foobar() {
this.a = 1;
this.b = 2;
var name = window['a']; // === undefined
alert(name);
name = this['a']; // === 1
alert(name);
}
new foobar();
new
creates a new instance of a self-defined object (context). Without new
the scope of the function would be also global
(=window). This example would alert undefined
and 1
respectively. If we would replace this.a = 1; this.b = 2
with:
var a = 1,
b = 2;
Both alert outputs would be undefined. In that scenario, the variables a
and b
would get stored in the Activation Object from foobar
, which we cannot access (of course we could access those directly by calling a
and b
).
:nth-child
is the answer you are looking for.
public static String readClob(Clob clob) throws SQLException, IOException {
StringBuilder sb = new StringBuilder((int) clob.length());
Reader r = clob.getCharacterStream();
char[] cbuf = new char[2048];
int n;
while ((n = r.read(cbuf, 0, cbuf.length)) != -1) {
sb.append(cbuf, 0, n);
}
return sb.toString();
}
The above approach is also very efficient.
This is what I got from oracle documentation, but it is for oracle 10g release 2:
When you define a NUMBER variable, you can specify its precision (p) and scale (s) so that it is sufficiently, but not unnecessarily, large. Precision is the number of significant digits. Scale can be positive or negative. Positive scale identifies the number of digits to the right of the decimal point; negative scale identifies the number of digits to the left of the decimal point that can be rounded up or down.
The NUMBER data type is supported by Oracle Database standard libraries and operates the same way as it does in SQL. It is used for dimensions and surrogates when a text or INTEGER data type is not appropriate. It is typically assigned to variables that are not used for calculations (like forecasts and aggregations), and it is used for variables that must match the rounding behavior of the database or require a high degree of precision. When deciding whether to assign the NUMBER data type to a variable, keep the following facts in mind in order to maximize performance:
What worked for me was adding a div around the content. Originally i had this. Css applied to the td had no effect.
<td>
@Html.DisplayFor(modelItem => item.Message)
</td>
Then I wrapped the content in a div and the css worked as expected
<td>
<div class="largeContent">
@Html.DisplayFor(modelItem => item.Message)
</div>
</td>
Shorter version
that works perfect for me that is as follow:
document.querySelector('#fileUpload').value = "";
As mentioned in the previous answers the difficulty in converting json to csv is because a json file can contain nested dictionaries and therefore be a multidimensional data structure verses a csv which is a 2D data structure. However, a good way to turn a multidimensional structure to a csv is to have multiple csvs that tie together with primary keys.
In your example, the first csv output has the columns "pk","model","fields" as your columns. Values for "pk", and "model" are easy to get but because the "fields" column contains a dictionary, it should be its own csv and because "codename" appears to the be the primary key, you can use as the input for "fields" to complete the first csv. The second csv contains the dictionary from the "fields" column with codename as the the primary key that can be used to tie the 2 csvs together.
Here is a solution for your json file which converts a nested dictionaries to 2 csvs.
import csv
import json
def readAndWrite(inputFileName, primaryKey=""):
input = open(inputFileName+".json")
data = json.load(input)
input.close()
header = set()
if primaryKey != "":
outputFileName = inputFileName+"-"+primaryKey
if inputFileName == "data":
for i in data:
for j in i["fields"].keys():
if j not in header:
header.add(j)
else:
outputFileName = inputFileName
for i in data:
for j in i.keys():
if j not in header:
header.add(j)
with open(outputFileName+".csv", 'wb') as output_file:
fieldnames = list(header)
writer = csv.DictWriter(output_file, fieldnames, delimiter=',', quotechar='"')
writer.writeheader()
for x in data:
row_value = {}
if primaryKey == "":
for y in x.keys():
yValue = x.get(y)
if type(yValue) == int or type(yValue) == bool or type(yValue) == float or type(yValue) == list:
row_value[y] = str(yValue).encode('utf8')
elif type(yValue) != dict:
row_value[y] = yValue.encode('utf8')
else:
if inputFileName == "data":
row_value[y] = yValue["codename"].encode('utf8')
readAndWrite(inputFileName, primaryKey="codename")
writer.writerow(row_value)
elif primaryKey == "codename":
for y in x["fields"].keys():
yValue = x["fields"].get(y)
if type(yValue) == int or type(yValue) == bool or type(yValue) == float or type(yValue) == list:
row_value[y] = str(yValue).encode('utf8')
elif type(yValue) != dict:
row_value[y] = yValue.encode('utf8')
writer.writerow(row_value)
readAndWrite("data")
using date method, we should be able to get the result. ie; date('N/D/l', mktime(0, 0, 0, month, day, year));
For Example
echo date('N', mktime(0, 0, 0, 7, 1, 2017)); // will return 6
echo date('D', mktime(0, 0, 0, 7, 1, 2017)); // will return Sat
echo date('l', mktime(0, 0, 0, 7, 1, 2017)); // will return Saturday
you can use range
with cells
to get the effect you want (but it would be better not to use select if you don't have to)
For n = 1 to 5
range(cells(1,n).entirecolumn,cells(1,n+4).entirecolumn).Select
do sth
next n
Once you have detected the bounding box of the document, you can perform a four-point perspective transform to obtain a top-down birds eye view of the image. This will fix the skew and isolate only the desired object.
Input image:
Detected text object
Top-down view of text document
Code
from imutils.perspective import four_point_transform
import cv2
import numpy
# Load image, grayscale, Gaussian blur, Otsu's threshold
image = cv2.imread("1.png")
gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
blur = cv2.GaussianBlur(gray, (7,7), 0)
thresh = cv2.threshold(blur, 0, 255, cv2.THRESH_BINARY + cv2.THRESH_OTSU)[1]
# Find contours and sort for largest contour
cnts = cv2.findContours(thresh, cv2.RETR_EXTERNAL,cv2.CHAIN_APPROX_SIMPLE)
cnts = cnts[0] if len(cnts) == 2 else cnts[1]
cnts = sorted(cnts, key=cv2.contourArea, reverse=True)
displayCnt = None
for c in cnts:
# Perform contour approximation
peri = cv2.arcLength(c, True)
approx = cv2.approxPolyDP(c, 0.02 * peri, True)
if len(approx) == 4:
displayCnt = approx
break
# Obtain birds' eye view of image
warped = four_point_transform(image, displayCnt.reshape(4, 2))
cv2.imshow("thresh", thresh)
cv2.imshow("warped", warped)
cv2.imshow("image", image)
cv2.waitKey()
var url = "www.stackoverflow.com"
let str = path.suffix(3)
print(str) //low
As the top answer here is suggesting something wrong (or at least too complicated), I feel this should be updated, although the question is quite old:
When using String resources in Android, you just have to call getString(...)
from Java code or use android:text="@string/..."
in your layout XML.
Even if you want to use HTML markup in your Strings, you don't have to change a lot:
The only characters that you need to escape in your String resources are:
"
becomes \"
'
becomes \'
&
becomes &
or &
That means you can add your HTML markup without escaping the tags:
<string name="my_string"><b>Hello World!</b> This is an example.</string>
However, to be sure, you should only use <b>
, <i>
and <u>
as they are listed in the documentation.
If you want to use your HTML strings from XML, just keep on using android:text="@string/..."
, it will work fine.
The only difference is that, if you want to use your HTML strings from Java code, you have to use getText(...)
instead of getString(...)
now, as the former keeps the style and the latter will just strip it off.
It's as easy as that. No CDATA, no Html.fromHtml(...)
.
You will only need Html.fromHtml(...)
if you did encode your special characters in HTML markup. Use it with getString(...)
then. This can be necessary if you want to pass the String to String.format(...)
.
This is all described in the docs as well.
Edit:
There is no difference between getText(...)
with unescaped HTML (as I've proposed) or CDATA
sections and Html.fromHtml(...)
.
See the following graphic for a comparison:
try this:
struct Pos{
int x;
int y;
inline Pos& operator=(const Pos& other){
x=other.x;
y=other.y;
return *this;
}
inline Pos operator+(const Pos& other) const {
Pos res {x+other.x,y+other.y};
return res;
}
const inline bool operator==(const Pos& other) const {
return (x==other.x and y == other.y);
}
};
$('#elementid').css('border-bottom', 'solid 1px red');
One way to do this that correctly uses group by
:
select l.*
from table l
inner join (
select
m_id, max(timestamp) as latest
from table
group by m_id
) r
on l.timestamp = r.latest and l.m_id = r.m_id
order by timestamp desc
How this works:
m_id
in the subquerytable
that match a row from the subquery (this operation -- where a join is performed, but no columns are selected from the second table, it's just used as a filter -- is known as a "semijoin" in case you were curious)Add the following line at the end of your eclipse.ini file
-Dorg.eclipse.ecf.provider.filetransfer.excludeContributors=org.eclipse.ecf.provider.filetransfer.httpclient4
I wouldn't really call it a favorite trick, since I've never used it, but the mention of Duff's Device reminded me of this article about implementing Coroutines in C. It always gives me a chuckle, but I'm sure it could be useful some time.
#x{_x000D_
width: 20px;_x000D_
height: 20px;_x000D_
background-color:orange;_x000D_
position:relative;_x000D_
border-radius:2px;_x000D_
}_x000D_
#x::after,#x::before{_x000D_
position:absolute;_x000D_
top:9px;_x000D_
left:0px;_x000D_
content:'';_x000D_
display:block;_x000D_
width:20px;_x000D_
height:2px;_x000D_
background-color:red;_x000D_
_x000D_
}_x000D_
#x::after{_x000D_
-webkit-transform: rotate(45deg);_x000D_
-moz-transform: rotate(45deg);_x000D_
-ms-transform: rotate(45deg);_x000D_
-o-transform: rotate(45deg);_x000D_
transform: rotate(45deg);_x000D_
}_x000D_
#x::before{_x000D_
-webkit-transform: rotate(-45deg);_x000D_
-moz-transform: rotate(-45deg);_x000D_
-ms-transform: rotate(-45deg);_x000D_
-o-transform: rotate(-45deg);_x000D_
transform: rotate(-45deg);_x000D_
}
_x000D_
<div id=x>_x000D_
</div>
_x000D_
I ran in this problem with OpenVPN working as well and I've found a solution where you should NOT stop/start OpenVPN server.
Idea that You should specify what exactly subnet you want to use. In docker-compose.yml
write:
networks:
default:
driver: bridge
ipam:
config:
- subnet: 172.16.57.0/24
That's it. Now, default
network will be used and if your VPN did not assign you something from 172.16.57.*
subnet, you're fine.
Write a dict
subclass that accepts a list of keys as an "item" and returns a "slice" of the dictionary:
class SliceableDict(dict):
default = None
def __getitem__(self, key):
if isinstance(key, list): # use one return statement below
# uses default value if a key does not exist
return {k: self.get(k, self.default) for k in key}
# raises KeyError if a key does not exist
return {k: self[k] for k in key}
# omits key if it does not exist
return {k: self[k] for k in key if k in self}
return dict.get(self, key)
Usage:
d = SliceableDict({1:2, 3:4, 5:6, 7:8})
d[[1, 5]] # {1: 2, 5: 6}
Or if you want to use a separate method for this type of access, you can use *
to accept any number of arguments:
class SliceableDict(dict):
def slice(self, *keys):
return {k: self[k] for k in keys}
# or one of the others from the first example
d = SliceableDict({1:2, 3:4, 5:6, 7:8})
d.slice(1, 5) # {1: 2, 5: 6}
keys = 1, 5
d.slice(*keys) # same
If there is only ever one line then do something like this:
using System;
using System.IO;
class Program
{
static void Main()
{
String[] values = File.ReadAllText(@"d:\test.csv").Split(',');
}
}
In my case a series of badly thought global text replacements had inadvertently changed this line in the resource designer cs file.
Since the namespace in that argument did not match the namespace of the class anymore, the application got confused at run time.
Check that the namespace of the designer matches the string argument in that line.
See http://docs.angularjs.org/error/$rootScope:inprog
The problem arises when you have a call to $apply
that is sometimes run asynchronously outside of Angular code (when $apply should be used) and sometimes synchronously inside Angular code (which causes the $digest already in progress
error).
This may happen, for example, when you have a library that asynchronously fetches items from a server and caches them. The first time an item is requested, it will be retrieved asynchronously so as not to block code execution. The second time, however, the item is already in cache so it can be retrieved synchronously.
The way to prevent this error is to ensure that the code that calls $apply
is run asynchronously. This can be done by running your code inside a call to $timeout
with the delay set to 0
(which is the default). However, calling your code inside $timeout
removes the necessity to call $apply
, because $timeout will trigger another $digest
cycle on its own, which will, in turn, do all the necessary updating, etc.
Solution
In short, instead of doing this:
... your controller code...
$http.get('some/url', function(data){
$scope.$apply(function(){
$scope.mydate = data.mydata;
});
});
... more of your controller code...
do this:
... your controller code...
$http.get('some/url', function(data){
$timeout(function(){
$scope.mydate = data.mydata;
});
});
... more of your controller code...
Only call $apply
when you know the code running it will always be run outside of Angular code (e.g. your call to $apply will happen inside a callback that is called by code outside of your Angular code).
Unless someone is aware of some impactful disadvantage to using $timeout
over $apply
, I don't see why you couldn't always use $timeout
(with zero delay) instead of $apply
, as it will do approximately the same thing.
Give permission in .htaccess as follows:
<Directory "Your directory path/uploads/">
Allow from all
</Directory>
it's file:///android_asset/... not file:///android_assets/... notice the plural of assets is wrong even if your file name is assets
Using the selectedOptions
property:
var yourSelect = document.getElementById("your-select-id");
alert(yourSelect.selectedOptions[0].value);
It works in all browsers except Internet Explorer.
y
or Y
, n
or N
Optionally: Repeat the question until an approve question is provided
Optionally: Ignore any other answer
Optionally: Exit the terminal if you want
confirm() {
echo -n "Continue? y or n? "
read REPLY
case $REPLY in
[Yy]) echo 'yup y' ;; # you can change what you do here for instance
[Nn]) break ;; # exit case statement gracefully
# Here are a few optional options to choose between
# Any other answer:
# 1. Repeat the question
*) confirm ;;
# 2. ignore
# *) ;;
# 3. Exit terminal
# *) exit ;;
esac
# REPLY=''
}
Notice this too: On the last line of this function clear the REPLY variable. Otherwise if you echo $REPLY
you will see it is still set until you open or close your terminal or set it again.
Look into android.util.Log
. It lets you write to the log with various log levels, and you can specify different tags to group the output.
For example
Log.w("myApp", "no network");
will output a warning with the tag myApp and the message no network.
I would use an asynchronous access using a completion block.
This example saves the Google logo to the document directory of the device. (iOS 5+, OSX 10.7+)
NSString *documentDir = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject];
NSString *filePath = [documentDir stringByAppendingPathComponent:@"GoogleLogo.png"];
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"https://www.google.com/images/srpr/logo11w.png"]];
[NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue currentQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) {
if (error) {
NSLog(@"Download Error:%@",error.description);
}
if (data) {
[data writeToFile:filePath atomically:YES];
NSLog(@"File is saved to %@",filePath);
}
}];
I found the answer (compliments to user780178) I was looking for in this other question:
Reset select2 value and show placeholdler
$("#customers_select").select2("val", "");
My Bots are running well against ReCaptcha.
Here my Solution.
Let your Bot do this Steps:
First write a Human Mouse Move Function to move your Mouse like a B-Spline (Ask me for Source Code). This is the most important Point.
Also use for better results a VPN like https://www.purevpn.com
For every Recpatcha do these Steps:
If you use VPN switch IP first
Clear all Browser Cookies
Clear all Browser Cache
Set one of these Useragents by Random:
a. Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)
b. Mozilla/5.0 (Windows NT 6.1; WOW64; rv:44.0) Gecko/20100101 Firefox/44.0
5 Move your Mouse with the Human Mouse Move Funktion from a RandomPoint into the I am not a Robot Image every time with different 10x10 Randomrange
Then Click ever with random delay between
WM_LBUTTONDOWN
and
WM_LBUTTONUP
Take Screenshot from Image Captcha
Send Screenshot to
or
and let they solve.
After receiving click cooridinates from captcha solver use your Human Mouse move Funktion to move and Click Recaptcha Images
Use your Human Mouse Move Funktion to move and Click to the Recaptcha Verify Button
In 75% all trys Recaptcha will solved
Chears Google
Tom
I have had the same error on python3 and this help me:
conn = pyodbc.connect('DRIVER={ODBC Driver 17 for SQL Server};'
'SERVER=YourServerName;'
'DATABASE=YourDatabaseName;UID=USER_NAME;PWD=PASS_WORD;')
remember python is case-sensitive so you have to mention DRIVER,SERVER,... in upper case. and you can visit this link for more information:
I had a situation where I needed to update or insert on a table according to two fields (both foreign keys) on which I couldn't set a UNIQUE constraint (so INSERT ... ON DUPLICATE KEY UPDATE won't work). Here's what I ended up using:
replace into last_recogs (id, hasher_id, hash_id, last_recog)
select l.* from
(select id, hasher_id, hash_id, [new_value] from last_recogs
where hasher_id in (select id from hashers where name=[hasher_name])
and hash_id in (select id from hashes where name=[hash_name])
union
select 0, m.id, h.id, [new_value]
from hashers m cross join hashes h
where m.name=[hasher_name]
and h.name=[hash_name]) l
limit 1;
This example is cribbed from one of my databases, with the input parameters (two names and a number) replaced with [hasher_name], [hash_name], and [new_value]. The nested SELECT...LIMIT 1 pulls the first of either the existing record or a new record (last_recogs.id is an autoincrement primary key) and uses that as the value input into the REPLACE INTO.
The issue seems to be a windows credentials issue. I was getting the same error on my work laptop with a VPN. I am supposedly logged in as my Domain/Username, which is what I use successfully when connecting directly but as soon as I move to a VPN with another connection I receive this error. I thought it was a DNS issue as I could ping the server but it turns out I needed to run SMSS explicitly as my user from Command prompt.
e.g runas /netonly /user:YourDoman\YourUsername "C:\Program Files (x86)\Microsoft SQL Server Management Studio 18\Common7\IDE\Ssms.exe"
Also check this article. Supposedly Microsoft released their Enterprise Library (v4.0) from their patterns and practices where they cover the validation subject but god knows why they didn't included validation for WPF, so the blog post I'm directing you to, explains what the author did to adapt it. Hope this helps!
Ruby 2.4+ / Rails - array.sum
i.e. [1, 2, 3].sum # => 6
Ruby pre 2.4 - array.inject(:+)
or array.reduce(:+)
*Note: The #sum
method is a new addition to 2.4 for enumerable
so you will now be able to use array.sum
in pure ruby, not just Rails.
I made API sending data via form on website to prosperworks based on @Rocket Hazmat, @dbau and @maraca code. I hope, it will help somebody:
<?php
if(isset($_POST['submit'])) {
//form's fields name:
$name = $_POST['nameField'];
$email = $_POST['emailField'];
//API url:
$url = 'https://api.prosperworks.com/developer_api/v1/leads';
//JSON data(not exact, but will be compiled to JSON) file:
//add as many data as you need (according to prosperworks doc):
$data = array(
'name' => $name,
'email' => array('email' => $email)
);
//sending request (according to prosperworks documentation):
// use key 'http' even if you send the request to https://...
$options = array(
'http' => array(
'header' => "Content-Type: application/json\r\n".
"X-PW-AccessToken: YOUR_TOKEN_HERE\r\n".
"X-PW-Application:developer_api\r\n".
"X-PW-UserEmail: YOUR_EMAIL_HERE\r\n",
'method' => 'POST',
'content' => json_encode($data)
)
);
//engine:
$context = stream_context_create($options);
$result = file_get_contents($url, false, $context);
if ($result === FALSE) { /* Handle error */ }
//compiling to JSON (as wrote above):
$resultData = json_decode($result, TRUE);
//display what was sent:
echo '<h2>Sent: </h2>';
echo $resultData['published'];
//dump var:
var_dump($result);
}
?>
<html>
<head>
</head>
<body>
<form action="" method="POST">
<h1><?php echo $msg; ?></h1>
Name: <input type="text" name="nameField"/>
<br>
Email: <input type="text" name="emailField"/>
<input type="submit" name="submit" value="Send"/>
</form>
</body>
</html>
GWT in Intellij 12
FWIW, I was getting a similar error with my GWT application during 'Build | Rebuild Project'.
This was caused by Intellij doing a full GWT compile which I didn't like because it is also a very lengthy process.
I disabled GWT compile by turning off the module check boxes under 'Project Structure | Facets | GWT'.
Alternatively there is a 'Compiler maximum heap size' setting in that location as well.
An obfuscated C version:
int IsPalindrome (char *s)
{
char*a,*b,c=0;
for(a=b=s;a<=b;c=(c?c==1?c=(*a&~32)-65>25u?*++a,1:2:c==2?(*--b&~32)-65<26u?3:2:c==3?(*b-65&~32)-(*a-65&~32)?*(b=s=0,a),4:*++a,1:0:*++b?0:1));
return s!=0;
}
This is a complete solution based on MadisonTrash answer, and benrwb and fredrivett tweaks for safari compatibility and vue 3 api changes.
The solution proposed below is still useful, and the how to use is still valid, but I changed it to use document.elementsFromPoint
instead of event.contains
because it doesn't recognise as children some elements like the <path>
tags inside svgs. So the right directive is this one:
export default {
beforeMount: (el, binding) => {
el.eventSetDrag = () => {
el.setAttribute("data-dragging", "yes");
};
el.eventClearDrag = () => {
el.removeAttribute("data-dragging");
};
el.eventOnClick = event => {
const dragging = el.getAttribute("data-dragging");
// Check that the click was outside the el and its children, and wasn't a drag
console.log(document.elementsFromPoint(event.clientX, event.clientY))
if (!document.elementsFromPoint(event.clientX, event.clientY).includes(el) && !dragging) {
// call method provided in attribute value
binding.value(event);
}
};
document.addEventListener("touchstart", el.eventClearDrag);
document.addEventListener("touchmove", el.eventSetDrag);
document.addEventListener("click", el.eventOnClick);
document.addEventListener("touchend", el.eventOnClick);
},
unmounted: el => {
document.removeEventListener("touchstart", el.eventClearDrag);
document.removeEventListener("touchmove", el.eventSetDrag);
document.removeEventListener("click", el.eventOnClick);
document.removeEventListener("touchend", el.eventOnClick);
el.removeAttribute("data-dragging");
},
};
const clickOutside = {
beforeMount: (el, binding) => {
el.eventSetDrag = () => {
el.setAttribute("data-dragging", "yes");
};
el.eventClearDrag = () => {
el.removeAttribute("data-dragging");
};
el.eventOnClick = event => {
const dragging = el.getAttribute("data-dragging");
// Check that the click was outside the el and its children, and wasn't a drag
if (!(el == event.target || el.contains(event.target)) && !dragging) {
// call method provided in attribute value
binding.value(event);
}
};
document.addEventListener("touchstart", el.eventClearDrag);
document.addEventListener("touchmove", el.eventSetDrag);
document.addEventListener("click", el.eventOnClick);
document.addEventListener("touchend", el.eventOnClick);
},
unmounted: el => {
document.removeEventListener("touchstart", el.eventClearDrag);
document.removeEventListener("touchmove", el.eventSetDrag);
document.removeEventListener("click", el.eventOnClick);
document.removeEventListener("touchend", el.eventOnClick);
el.removeAttribute("data-dragging");
},
}
createApp(App)
.directive("click-outside", clickOutside)
.mount("#app");
This solution watch the element and the element's children of the component where the directive is applied to check if the event.target
element is also a child. If that's the case it will not trigger, because it's inside the component.
You only have to use as any directive, with a method reference to handle the trigger:
<template>
<div v-click-outside="myMethod">
<div class="handle" @click="doAnotherThing($event)">
<div>Any content</div>
</div>
</div>
</template>
Similarly along the lines of these answers written as a plugin:
$.fn.sum = function () {
var sum = 0;
this.each(function () {
sum += 1*($(this).val());
});
return sum;
};
For the record 1 * x is faster than Number(x) in Chrome
Try to do so:
1) In your index.html
<div class="col-lg-3 col-md-4 col-xs-6 thumb">
<a class="thumbnail" href="#">
<div class="ratio" style="background-image:url('../Images/img1.jpg')"></div>
</a>
</div>
2) In your style.css
.ratio {
position:relative;
width: 100%;
height: 0;
padding-bottom: 50%;
background-repeat: no-repeat;
background-position: center center;
background-size: cover;
}
The GUI for managing SSL certs on Chromium on Linux did NOT work properly for me. However, their docs gave the right answer. The trick was to run the command below that imports the self-signed SSL cert. Just update the name of the <certificate-nickname>
and certificate-filename.cer
, then restart chromium/chrome.
From the Docs:
On Linux, Chromium uses the NSS Shared DB. If the built-in manager does not work for you then you can configure certificates with the NSS command line tools.
Get the tools
Debian/Ubuntu:
sudo apt-get install libnss3-tools
Fedora:
su -c "yum install nss-tools"
Gentoo:
su -c "echo 'dev-libs/nss utils' >> /etc/portage/package.use && emerge dev-libs/nss"
(You need to launch all commands below with thenss
prefix, e.g.,nsscertutil
.) Opensuse:sudo zypper install mozilla-nss-tools
To trust a self-signed server certificate, we should use
certutil -d sql:$HOME/.pki/nssdb -A -t "P,," -n <certificate-nickname> -i certificate-filename.cer
List all certificates
certutil -d sql:$HOME/.pki/nssdb -L
The TRUSTARGS are three strings of zero or more alphabetic characters, separated by commas. They define how the certificate should be trusted for SSL, email, and object signing, and are explained in the certutil docs or Meena's blog post on trust flags.
Add a personal certificate and private key for SSL client authentication Use the command:
pk12util -d sql:$HOME/.pki/nssdb -i PKCS12_file.p12
to import a personal certificate and private key stored in a PKCS #12 file. The TRUSTARGS of the personal certificate will be set to “u,u,u”.
Delete a certificate
certutil -d sql:$HOME/.pki/nssdb -D -n <certificate nickname>
Excerpt From: https://chromium.googlesource.com/chromium/src/+/HEAD/docs/linux_cert_management.md
There are two way to stop current method/process :
Option : you can also kill the current thread to stop it.
For example :
public void onClick(){
if(condition == true){
return;
<or>
throw new YourException();
}
string.setText("This string should not change if condition = true");
}
You could ignore SIGINTs after shutdown starts by calling signal.signal(signal.SIGINT, signal.SIG_IGN)
before you start your cleanup code.
For those using MooTools, here is equivalent code:
'mousewheel': function(event){
var height = this.getSize().y;
height -= 2; // Not sure why I need this bodge
if ((this.scrollTop === (this.scrollHeight - height) && event.wheel < 0) ||
(this.scrollTop === 0 && event.wheel > 0)) {
event.preventDefault();
}
Bear in mind that I, like some others, had to tweak a value by a couple of px, that is what the height -= 2 is for.
Basically the main difference is that in MooTools, the delta info comes from event.wheel instead of an extra parameter passed to the event.
Also, I had problems if I bound this code to anything (event.target.scrollHeight for a bound function does not equal this.scrollHeight for a non-bound one)
Hope this helps someone as much as this post helped me ;)
As an alternative to virtualenv, you can use anaconda.
On Linux, to create an environment with python 2.7:
conda create -n python2p7 python=2.7
source activate python2p7
To deactivate it, you do:
source deactivate
It is possible to install other package inside your environment.
An optional in Swift is a type that can hold either a value or no value. Optionals are written by appending a ?
to any type:
var name: String? = "Bertie"
Optionals (along with Generics) are one of the most difficult Swift concepts to understand. Because of how they are written and used, it's easy to get a wrong idea of what they are. Compare the optional above to creating a normal String:
var name: String = "Bertie" // No "?" after String
From the syntax it looks like an optional String is very similar to an ordinary String. It's not. An optional String is not a String with some "optional" setting turned on. It's not a special variety of String. A String and an optional String are completely different types.
Here's the most important thing to know: An optional is a kind of container. An optional String is a container which might contain a String. An optional Int is a container which might contain an Int. Think of an optional as a kind of parcel. Before you open it (or "unwrap" in the language of optionals) you won't know if it contains something or nothing.
You can see how optionals are implemented in the Swift Standard Library by typing "Optional" into any Swift file and ?-clicking on it. Here's the important part of the definition:
enum Optional<Wrapped> {
case none
case some(Wrapped)
}
Optional is just an enum
which can be one of two cases: .none
or .some
. If it's .some
, there's an associated value which, in the example above, would be the String
"Hello". An optional uses Generics to give a type to the associated value. The type of an optional String isn't String
, it's Optional
, or more precisely Optional<String>
.
Everything Swift does with optionals is magic to make reading and writing code more fluent. Unfortunately this obscures the way it actually works. I'll go through some of the tricks later.
Note: I'll be talking about optional variables a lot, but it's fine to create optional constants too. I mark all variables with their type to make it easier to understand type types being created, but you don't have to in your own code.
To create an optional, append a ?
after the type you wish to wrap. Any type can be optional, even your own custom types. You can't have a space between the type and the ?
.
var name: String? = "Bob" // Create an optional String that contains "Bob"
var peter: Person? = Person() // An optional "Person" (custom type)
// A class with a String and an optional String property
class Car {
var modelName: String // must exist
var internalName: String? // may or may not exist
}
You can compare an optional to nil
to see if it has a value:
var name: String? = "Bob"
name = nil // Set name to nil, the absence of a value
if name != nil {
print("There is a name")
}
if name == nil { // Could also use an "else"
print("Name has no value")
}
This is a little confusing. It implies that an optional is either one thing or another. It's either nil or it's "Bob". This is not true, the optional doesn't transform into something else. Comparing it to nil is a trick to make easier-to-read code. If an optional equals nil, this just means that the enum is currently set to .none
.
If you try to set a non-optional variable to nil, you'll get an error.
var red: String = "Red"
red = nil // error: nil cannot be assigned to type 'String'
Another way of looking at optionals is as a complement to normal Swift variables. They are a counterpart to a variable which is guaranteed to have a value. Swift is a careful language that hates ambiguity. Most variables are define as non-optionals, but sometimes this isn't possible. For example, imagine a view controller which loads an image either from a cache or from the network. It may or may not have that image at the time the view controller is created. There's no way to guarantee the value for the image variable. In this case you would have to make it optional. It starts as nil
and when the image is retrieved, the optional gets a value.
Using an optional reveals the programmers intent. Compared to Objective-C, where any object could be nil, Swift needs you to be clear about when a value can be missing and when it's guaranteed to exist.
An optional String
cannot be used in place of an actual String
. To use the wrapped value inside an optional, you have to unwrap it. The simplest way to unwrap an optional is to add a !
after the optional name. This is called "force unwrapping". It returns the value inside the optional (as the original type) but if the optional is nil
, it causes a runtime crash. Before unwrapping you should be sure there's a value.
var name: String? = "Bob"
let unwrappedName: String = name!
print("Unwrapped name: \(unwrappedName)")
name = nil
let nilName: String = name! // Runtime crash. Unexpected nil.
Because you should always check for nil before unwrapping and using an optional, this is a common pattern:
var mealPreference: String? = "Vegetarian"
if mealPreference != nil {
let unwrappedMealPreference: String = mealPreference!
print("Meal: \(unwrappedMealPreference)") // or do something useful
}
In this pattern you check that a value is present, then when you are sure it is, you force unwrap it into a temporary constant to use. Because this is such a common thing to do, Swift offers a shortcut using "if let". This is called "optional binding".
var mealPreference: String? = "Vegetarian"
if let unwrappedMealPreference: String = mealPreference {
print("Meal: \(unwrappedMealPreference)")
}
This creates a temporary constant (or variable if you replace let
with var
) whose scope is only within the if's braces. Because having to use a name like "unwrappedMealPreference" or "realMealPreference" is a burden, Swift allows you to reuse the original variable name, creating a temporary one within the bracket scope
var mealPreference: String? = "Vegetarian"
if let mealPreference: String = mealPreference {
print("Meal: \(mealPreference)") // separate from the other mealPreference
}
Here's some code to demonstrate that a different variable is used:
var mealPreference: String? = "Vegetarian"
if var mealPreference: String = mealPreference {
print("Meal: \(mealPreference)") // mealPreference is a String, not a String?
mealPreference = "Beef" // No effect on original
}
// This is the original mealPreference
print("Meal: \(mealPreference)") // Prints "Meal: Optional("Vegetarian")"
Optional binding works by checking to see if the optional equals nil. If it doesn't, it unwraps the optional into the provided constant and executes the block. In Xcode 8.3 and later (Swift 3.1), trying to print an optional like this will cause a useless warning. Use the optional's debugDescription
to silence it:
print("\(mealPreference.debugDescription)")
Optionals have two use cases:
Some concrete examples:
middleName
or spouse
in a Person
classweak
properties in classes. The thing they point to can be set to nil
at any timeBoolean
Optionals don't exist in Objective-C but there is an equivalent concept, returning nil. Methods that can return an object can return nil instead. This is taken to mean "the absence of a valid object" and is often used to say that something went wrong. It only works with Objective-C objects, not with primitives or basic C-types (enums, structs). Objective-C often had specialized types to represent the absence of these values (NSNotFound
which is really NSIntegerMax
, kCLLocationCoordinate2DInvalid
to represent an invalid coordinate, -1
or some negative value are also used). The coder has to know about these special values so they must be documented and learned for each case. If a method can't take nil
as a parameter, this has to be documented. In Objective-C, nil
was a pointer just as all objects were defined as pointers, but nil
pointed to a specific (zero) address. In Swift, nil
is a literal which means the absence of a certain type.
nil
You used to be able to use any optional as a Boolean
:
let leatherTrim: CarExtras? = nil
if leatherTrim {
price = price + 1000
}
In more recent versions of Swift you have to use leatherTrim != nil
. Why is this? The problem is that a Boolean
can be wrapped in an optional. If you have Boolean
like this:
var ambiguous: Boolean? = false
it has two kinds of "false", one where there is no value and one where it has a value but the value is false
. Swift hates ambiguity so now you must always check an optional against nil
.
You might wonder what the point of an optional Boolean
is? As with other optionals the .none
state could indicate that the value is as-yet unknown. There might be something on the other end of a network call which takes some time to poll. Optional Booleans are also called "Three-Value Booleans"
Swift uses some tricks to allow optionals to work. Consider these three lines of ordinary looking optional code;
var religiousAffiliation: String? = "Rastafarian"
religiousAffiliation = nil
if religiousAffiliation != nil { ... }
None of these lines should compile.
String
the types are differentI'll go through some of the implementation details of optionals that allow these lines to work.
Using ?
to create an optional is syntactic sugar, enabled by the Swift compiler. If you want to do it the long way, you can create an optional like this:
var name: Optional<String> = Optional("Bob")
This calls Optional
's first initializer, public init(_ some: Wrapped)
, which infers the optional's associated type from the type used within the parentheses.
The even longer way of creating and setting an optional:
var serialNumber:String? = Optional.none
serialNumber = Optional.some("1234")
print("\(serialNumber.debugDescription)")
nil
You can create an optional with no initial value, or create one with the initial value of nil
(both have the same outcome).
var name: String?
var name: String? = nil
Allowing optionals to equal nil
is enabled by the protocol ExpressibleByNilLiteral
(previously named NilLiteralConvertible
). The optional is created with Optional
's second initializer, public init(nilLiteral: ())
. The docs say that you shouldn't use ExpressibleByNilLiteral
for anything except optionals, since that would change the meaning of nil in your code, but it's possible to do it:
class Clint: ExpressibleByNilLiteral {
var name: String?
required init(nilLiteral: ()) {
name = "The Man with No Name"
}
}
let clint: Clint = nil // Would normally give an error
print("\(clint.name)")
The same protocol allows you to set an already-created optional to nil
. Although it's not recommended, you can use the nil literal initializer directly:
var name: Optional<String> = Optional(nilLiteral: ())
nil
Optionals define two special "==" and "!=" operators, which you can see in the Optional
definition. The first ==
allows you to check if any optional is equal to nil. Two different optionals which are set to .none will always be equal if the associated types are the same. When you compare to nil, behind the scenes Swift creates an optional of the same associated type, set to .none then uses that for the comparison.
// How Swift actually compares to nil
var tuxedoRequired: String? = nil
let temp: Optional<String> = Optional.none
if tuxedoRequired == temp { // equivalent to if tuxedoRequired == nil
print("tuxedoRequired is nil")
}
The second ==
operator allows you to compare two optionals. Both have to be the same type and that type needs to conform to Equatable
(the protocol which allows comparing things with the regular "==" operator). Swift (presumably) unwraps the two values and compares them directly. It also handles the case where one or both of the optionals are .none
. Note the distinction between comparing to the nil
literal.
Furthermore, it allows you to compare any Equatable
type to an optional wrapping that type:
let numberToFind: Int = 23
let numberFromString: Int? = Int("23") // Optional(23)
if numberToFind == numberFromString {
print("It's a match!") // Prints "It's a match!"
}
Behind the scenes, Swift wraps the non-optional as an optional before the comparison. It works with literals too (if 23 == numberFromString {
)
I said there are two ==
operators, but there's actually a third which allow you to put nil
on the left-hand side of the comparison
if nil == name { ... }
There is no Swift convention for naming optional types differently from non-optional types. People avoid adding something to the name to show that it's an optional (like "optionalMiddleName", or "possibleNumberAsString") and let the declaration show that it's an optional type. This gets difficult when you want to name something to hold the value from an optional. The name "middleName" implies that it's a String type, so when you extract the String value from it, you can often end up with names like "actualMiddleName" or "unwrappedMiddleName" or "realMiddleName". Use optional binding and reuse the variable name to get around this.
From "The Basics" in the Swift Programming Language:
Swift also introduces optional types, which handle the absence of a value. Optionals say either “there is a value, and it equals x” or “there isn’t a value at all”. Optionals are similar to using nil with pointers in Objective-C, but they work for any type, not just classes. Optionals are safer and more expressive than nil pointers in Objective-C and are at the heart of many of Swift’s most powerful features.
Optionals are an example of the fact that Swift is a type safe language. Swift helps you to be clear about the types of values your code can work with. If part of your code expects a String, type safety prevents you from passing it an Int by mistake. This enables you to catch and fix errors as early as possible in the development process.
To finish, here's a poem from 1899 about optionals:
Yesterday upon the stair
I met a man who wasn’t there
He wasn’t there again today
I wish, I wish he’d go away
Antigonish
I had same problem in my xiaomi note 4a device. I solved it by turning off MIUI optimization.
You should be able to install m2e (maven project for eclipse) using the Help -> Install New Software dialog. On that dialog open the Juno site (http://download.eclipse.org/releases/juno) and expand the Collaboration group (or type m2e into the filter). Select the two m2e options and follow the installation dialog
I had this happen to me about a year ago and I don't remember exactly what the root cause was, but there are two things you might try:
Show All Files
in the Solution Explorer or open the solution folder in Windows Explorer - it could be that a version of the file somehow got excluded from the project and is therefor 'invisible' to VS but still makes it angry...stay true to native (Boolean) property support and its powerful syntax like:
[elem].disabled = condition ? true : false; //done!
and for our own good collective coding experience, -please insist on others to support it as well.
First access the children with: this.props.children
, each child will then have its ref
as a property on it.
Mongodb when running mongod
looks for ~/data/db
folder in as a path for db in the root folder of your device.
I solved it by creating a ~/data
folder by running mkdir ~/data
In the root folder check if data folder is there by typing ls
. Then navigate to the data folder and double check pwd
should give you /Users/username/data
Then run this command to create a mongodb db path
sudo mongod --dbpath=/Users/username/data
This did it for me and when I ran mongod
In my case Drag & Drop didn't work.
File -> Add to Library...
Working Query:
SELECT replace(col_name , ' ','') FROM table_name;
While this doesn't :
SELECT trim(col_name) FROM table_name;
Just use the result from the FOR
command. For example (inside a batch file):
for /F "delims=" %%I in ('dir /b /a-d /od FILESA*') do (echo %%I)
You can use the %%I
as the value you want. Just like this: %%I
.
And in advance the %%I
does not have any spaces or CR characters and can be used for comparisons!!
If all you care about is the current process, an easy way is to use the file object attribute "closed"
f = open('file.py')
if f.closed:
print 'file is closed'
This will not detect if the file is open by other processes!
source: http://docs.python.org/2.4/lib/bltin-file-objects.html
Maybe it is not quite as elegant, but the following might also work. I suspect asynchronously this would not be a good solution.
$p = Start-Process myjob.bat -redirectstandardoutput $logtempfile -redirecterroroutput $logtempfile -wait
add-content $logfile (get-content $logtempfile)
i had the same problem... every time that i wanted to publish my css.. I had to make a search/replace.. and relative path wouldnt work either for me because the relative paths were different from dev to production.
Finally was tired of doing the search/replace and I created a dynamic css, (e.g. www.mysite.com/css.php) it's the same but now i could use my php constants in the css. somethig like
.icon{
background-image:url('<?php echo BASE_IMAGE;?>icon.png');
}
and it's not a bad idea to make it dynamic because now i could compress it using YUI compressor without loosing the original format on my dev server.
Good Luck!
One of the simple way is to create your database on SD-Card. Because you cannot get access to your phone's data folder in internal memory, unless you root your phone. So why not simply create your database on SD-Card.
Moreover, if you want, you may write some file copying-code to copy your existing database file (from internal memory) to external memory without requiring any root.
In SQL Developer, from the top menu choose Tools > Data Export. This launches the Data Export wizard. It's pretty straightforward from there.
There is a tutorial on the OTN site. Find it here.
Eclipse and Java JDK (or JRE) must match regarding the BIT Version
For example:
32 Bit Eclipse won't work with 64 Bit Java!
32 Bit Eclipse needs 32 Bit Java!
All interaction between server(your flask app) and client(browser) going by request and response. When user hit button submit in your form his browser send request with this form to your server (flask app), and you can get content of the form like:
request.args.get('form_name')
When divided by zero
If you divide double by 0, JVM will show Infinity.
public static void main(String [] args){ double a=10.00; System.out.println(a/0); }
Console:
Infinity
If you divide int by 0, then JVM will throw Arithmetic Exception.
public static void main(String [] args){
int a=10;
System.out.println(a/0);
}
Console: Exception in thread "main" java.lang.ArithmeticException: / by zero
4 GB minus what is in use by the system if you link with /LARGEADDRESSAWARE.
Of course, you should be even more careful with pointer arithmetic if you set that flag.
Using a web service s-shot.ru (so it's not so fast), but quite easy to set up what need through the link configuration. And you can easily capture full page screenshots
import requests
import urllib.parse
BASE = 'https://mini.s-shot.ru/1024x0/JPEG/1024/Z100/?' # you can modify size, format, zoom
url = 'https://stackoverflow.com/'#or whatever link you need
url = urllib.parse.quote_plus(url) #service needs link to be joined in encoded format
print(url)
path = 'target1.jpg'
response = requests.get(BASE + url, stream=True)
if response.status_code == 200:
with open(path, 'wb') as file:
for chunk in response:
file.write(chunk)
In general it would be something like this:
if(test != "A" && test != "B")
You should probably read up on JavaScript logical operators.
All other unswers require to run your code inside a new thread. In some simple use cases you may just want to wait a bit and continue execution within the same thread/flow.
Code below demonstrates that technique. Keep in mind this is similar to what java.util.Timer does under the hood but more lightweight.
import java.util.concurrent.TimeUnit;
public class DelaySample {
public static void main(String[] args) {
DelayUtil d = new DelayUtil();
System.out.println("started:"+ new Date());
d.delay(500);
System.out.println("half second after:"+ new Date());
d.delay(1, TimeUnit.MINUTES);
System.out.println("1 minute after:"+ new Date());
}
}
DelayUtil Implementation
import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.ReentrantLock;
public class DelayUtil {
/**
* Delays the current thread execution.
* The thread loses ownership of any monitors.
* Quits immediately if the thread is interrupted
*
* @param duration the time duration in milliseconds
*/
public void delay(final long durationInMillis) {
delay(durationInMillis, TimeUnit.MILLISECONDS);
}
/**
* @param duration the time duration in the given {@code sourceUnit}
* @param unit
*/
public void delay(final long duration, final TimeUnit unit) {
long currentTime = System.currentTimeMillis();
long deadline = currentTime+unit.toMillis(duration);
ReentrantLock lock = new ReentrantLock();
Condition waitCondition = lock.newCondition();
while ((deadline-currentTime)>0) {
try {
lock.lockInterruptibly();
waitCondition.await(deadline-currentTime, TimeUnit.MILLISECONDS);
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
return;
} finally {
lock.unlock();
}
currentTime = System.currentTimeMillis();
}
}
}
Complementing the @DanielLew answer, to get the values of the parameteres you have to do this:
URI example: myapp://path/to/what/i/want?keyOne=valueOne&keyTwo=valueTwo
in your activity:
Intent intent = getIntent();
if (Intent.ACTION_VIEW.equals(intent.getAction())) {
Uri uri = intent.getData();
String valueOne = uri.getQueryParameter("keyOne");
String valueTwo = uri.getQueryParameter("keyTwo");
}
I update this function
now you can print any tag or any part of the page with its full style
must include jquery.js file
HTML
<div id='DivIdToPrint'>
<p>This is a sample text for printing purpose.</p>
</div>
<p>Do not print.</p>
<input type='button' id='btn' value='Print' onclick='printtag("DivIdToPrint");' >
JavaScript
function printtag(tagid) {
var hashid = "#"+ tagid;
var tagname = $(hashid).prop("tagName").toLowerCase() ;
var attributes = "";
var attrs = document.getElementById(tagid).attributes;
$.each(attrs,function(i,elem){
attributes += " "+ elem.name+" ='"+elem.value+"' " ;
})
var divToPrint= $(hashid).html() ;
var head = "<html><head>"+ $("head").html() + "</head>" ;
var allcontent = head + "<body onload='window.print()' >"+ "<" + tagname + attributes + ">" + divToPrint + "</" + tagname + ">" + "</body></html>" ;
var newWin=window.open('','Print-Window');
newWin.document.open();
newWin.document.write(allcontent);
newWin.document.close();
// setTimeout(function(){newWin.close();},10);
}
I believe that you can omit updating the "non-desired" columns by adjusting the other answers as follows:
update table set
columnx = (case when condition1 then 25 end),
columny = (case when condition2 then 25 end)`
As I understand it, this will update only when the condition is met.
After reading all the comments, this is the most efficient:
Update table set ColumnX = 25 where Condition1
Update table set ColumnY = 25 where Condition1`
Sample Table:
CREATE TABLE [dbo].[tblTest](
[ColX] [int] NULL,
[ColY] [int] NULL,
[ColConditional] [bit] NULL,
[id] [int] IDENTITY(1,1) NOT NULL
) ON [PRIMARY]
Sample Data:
Insert into tblTest (ColX, ColY, ColConditional) values (null, null, 0)
Insert into tblTest (ColX, ColY, ColConditional) values (null, null, 0)
Insert into tblTest (ColX, ColY, ColConditional) values (null, null, 1)
Insert into tblTest (ColX, ColY, ColConditional) values (null, null, 1)
Insert into tblTest (ColX, ColY, ColConditional) values (1, null, null)
Insert into tblTest (ColX, ColY, ColConditional) values (2, null, null)
Insert into tblTest (ColX, ColY, ColConditional) values (null, 1, null)
Insert into tblTest (ColX, ColY, ColConditional) values (null, 2, null)
Now I assume you can write a conditional that handles nulls. For my example, I am assuming you have written such a conditional that evaluates to True, False or Null. If you need help with this, let me know and I will do my best.
Now running these two lines of code does infact change X to 25 if and only if ColConditional is True(1) and Y to 25 if and only if ColConditional is False(0)
Update tblTest set ColX = 25 where ColConditional = 1
Update tblTest set ColY = 25 where ColConditional = 0
P.S. The null case was never mentioned in the original question or any updates to the question, but as you can see, this very simple answer handles them anyway.
Yes, it will be possible and it won't be that difficult. All what's needed at this point to start with is some kind of converter that will turn MSIL into Dalvik bytecode. Since both formats are open-sourced and well documented, there won't be any problem with it.
So, writing Android applications in C# or VB.NET will be possible, question is how much of .NET framework standard libraries will be supported. But that's another issue.
Oscar Reyes wrote:
I'm pretty sure if google hand ANY interest in .net, they would've design something while Android was in the first stages, not now when they are in production stages. I don't mean it is not possible, what I'm saying is they're not interested. Maybe in mmm hhhh 10 yrs.
Actually what they've already designed is very compatible with Java and .NET
They can't do everything at once, but if you look into Android SDK, there is a tool called dx. This tool converts Java bytecode into Dalvik bytecode, so in other words, you can run programs written in Java on Android with no effort today. Now the same tool is needed for .NET.
Considering how similar .NET and Java are, it's really a matter of time.
ddimitrov wrote:
The .Net->Java->Dalvik translation can be done even now (http://dev.mainsoft.com/), but I think you underestimate the lack of .Net libraries. Of course somebody can port Mono, but it's definitely a non-trivial effort.
No need to port Mono. Android already has VM and some basic API. All what's needed is CIL->Dalvik converter and tiny .NET wrapper for Android API (and maybe some basic implementation of some standard .NET classes). That's it.
Update: .NET already works on Android - you will need product called Monodroid (http://monodroid.net) as stated above.
Your loading of the JSON data is a little fragile. Instead of:
json_raw= raw.readlines()
json_object = json.loads(json_raw[0])
you should really just do:
json_object = json.load(raw)
You shouldn't think of what you get as a "JSON object". What you have is a list. The list contains two dicts. The dicts contain various key/value pairs, all strings. When you do json_object[0]
, you're asking for the first dict in the list. When you iterate over that, with for song in json_object[0]:
, you iterate over the keys of the dict. Because that's what you get when you iterate over the dict. If you want to access the value associated with the key in that dict, you would use, for example, json_object[0][song]
.
None of this is specific to JSON. It's just basic Python types, with their basic operations as covered in any tutorial.
We can iterate loop like as C programming.
#!/bin/bash
for ((i=1; i<=20; i=i+1))
do
echo $i
done
In my case, all I had to do was add the following User variable on Windows:
Variable name: HOME
Variable value: %USERPROFILE%
How to set a Environment Variable (You can use the User variables for username section if you are not a system administrator)
I was looking for something that looked like jquery for generating dom in C# (I don't need to parse). Unfortunately no luck in finding a lightweight solution so I created this simple class that is inherited from System.Xml.Linq.XElement. The key feature is that you can chain the operator like when using jquery in javascript so it's more fluent. It's not fully featured but it does what I need and if there is interest I can start a git.
public class DomElement : XElement
{
public DomElement(string name) : base(name)
{
}
public DomElement(string name, string value) : base(name, value)
{
}
public DomElement Css(string style, string value)
{
style = style.Trim();
value = value.Trim();
var existingStyles = new Dictionary<string, string>();
var xstyle = this.Attribute("style");
if (xstyle != null)
{
foreach (var s in xstyle.Value.Split(';'))
{
var keyValue = s.Split(':');
existingStyles.Add(keyValue[0], keyValue.Length < 2 ? null : keyValue[1]);
}
}
if (existingStyles.ContainsKey(style))
{
existingStyles[style] = value;
}
else
{
existingStyles.Add(style, value);
}
var styleString = string.Join(";", existingStyles.Select(s => $"{s.Key}:{s.Value}"));
this.SetAttributeValue("style", styleString);
return this;
}
public DomElement AddClass(string cssClass)
{
var existingClasses = new List<string>();
var xclass = this.Attribute("class");
if (xclass != null)
{
existingClasses.AddRange(xclass.Value.Split());
}
var addNewClasses = cssClass.Split().Where(e => !existingClasses.Contains(e));
existingClasses.AddRange(addNewClasses);
this.SetAttributeValue("class", string.Join(" ", existingClasses));
return this;
}
public DomElement Text(string text)
{
this.Value = text;
return this;
}
public DomElement Append(string text)
{
this.Add(text);
return this;
}
public DomElement Append(DomElement child)
{
this.Add(child);
return this;
}
}
Sample:
void Main()
{
var html = new DomElement("html")
.Append(new DomElement("head"))
.Append(new DomElement("body")
.Append(new DomElement("p")
.Append("This paragraph contains")
.Append(new DomElement("b", "bold"))
.Append(" text.")
)
.Append(new DomElement("p").Text("This paragraph has just plain text"))
)
;
html.ToString().Dump();
var table = new DomElement("table").AddClass("table table-sm").AddClass("table-striped")
.Append(new DomElement("thead")
.Append(new DomElement("tr")
.Append(new DomElement("td").Css("padding-left", "15px").Css("color", "red").Css("color", "blue")
.AddClass("from-now")
.Append(new DomElement("div").Text("Hi there"))
.Append(new DomElement("div").Text("Hey there"))
.Append(new DomElement("div", "Yo there"))
)
)
)
;
table.ToString().Dump();
}
output from above code:
<html>
<head />
<body>
<p>This paragraph contains<b>bold</b> text.</p>
<p>This paragraph has just plain text</p>
</body>
</html>
<table class="table table-sm table-striped">
<thead>
<tr>
<td style="padding-left:15px;color:blue" class="from-now">
<div>Hi there</div>
<div>Hey there</div>
<div>Yo there</div>
</td>
</tr>
</thead>
</table>
I faced a similar problem. The problem in my case was, Number of rows in X was not equal to number of rows in y.
i.e. number of entries in feature columns was not equal to number of entires in target variable since I had dropped some rows from freature columns.
Why not...
bool isEmpty = !list.Any();
if(isEmpty)
{
// error message
}
else
{
// show grid
}
The GridView
has also an EmptyDataTemplate
which is shown if the datasource is empty. This is an approach in ASP.NET:
<emptydatarowstyle backcolor="LightBlue" forecolor="Red"/>
<emptydatatemplate>
<asp:image id="NoDataErrorImg"
imageurl="~/images/NoDataError.jpg" runat="server"/>
No Data Found!
</emptydatatemplate>
I know this is an old question, but since php7.0 you can use the null coalescing operator (another resource).
It similar to the ternary operator, but will behave like isset on the lefthand operand instead of just using its boolean value.
$slide = $_GET["id"] ?? 'fallback';
So if $_GET["id"]
is set, it returns the value. If not, it returns the fallback. I found this very helpful for $_POST, $_GET, or any passed parameters, etc
$slide = $_GET["id"] ?? '';
if (trim($slide) == 'link1') ...
On newer versions of yum, this information is stored in the "yumdb" when the package is installed. This is the only 100% accurate way to get the information, and you can use:
yumdb search from_repo repoid
(or repoquery and grep -- don't grep yum output). However the command "find-repos-of-install" was part of yum-utils for a while which did the best guess without that information:
http://james.fedorapeople.org/yum/commands/find-repos-of-install.py
As floyd said, a lot of repos. include a unique "dist" tag in their release, and you can look for that ... however from what you said, I guess that isn't the case for you?
This is useful in contexts where the encoding is not told per HTTP header or other meta data, e.g. the local file system.
Imagine the following stylesheet:
[rel="external"]::after
{
content: ' ?';
}
If a reader saves the file to a hard drive and you omit the @charset
rule, most browsers will read it in the OS’ locale encoding, e.g. Windows-1252, and insert ↗ instead of an arrow.
Unfortunately, you cannot rely on this mechanism as the support is rather … rare.
And remember that on the net an HTTP header will always override the @charset
rule.
The correct rules to determine the character set of a stylesheet are in order of priority:
@charset
rule.The last rule is the weakest, it will fail in some browsers.
The charset
attribute in <link rel='stylesheet' charset='utf-8'>
is obsolete in HTML 5.
Watch out for conflict between the different declarations. They are not easy to debug.
@charset
if more than one name is registered for the same encoding.@charset
. There is a support table. I do not trust this. :)Create a class and give it an __init__
method:
class Student:
def __init__(self, name, age, major):
self.name = name
self.age = age
self.major = major
def is_old(self):
return self.age > 100
Now, you can initialize an instance of the Student
class:
>>> s = Student('John', 88, None)
>>> s.name
'John'
>>> s.age
88
Although I'm not sure why you need a make_student
student function if it does the same thing as Student.__init__
.
Here is a complete solution to your question using Python's built-in functions:
# Create the List
numbers = input("Enter the elements of the list. Separate each value with a comma. Do not put a comma at the end.\n").split(",")
# Convert the elements in the list (treated as strings) to integers
numberL = [int(element) for element in numbers]
# Loop through the list with a for-loop
for elements in numberL:
maxEle = max(numberL)
indexMax = numberL.index(maxEle)
print(maxEle)
print(indexMax)
None of the other answers dealt with the case of using .children()
or .find(">")
to only search for immediate children of a parent element. So, I created a jsPerf test to find out, using three different ways to distinguish children.
As it happens, even when using the extra ">" selector, .find()
is still a lot faster than .children()
; on my system, 10x so.
So, from my perspective, there does not appear to be much reason to use the filtering mechanism of .children()
at all.
Just cast your int
to a char
. You can convert that to a String
using Character.toString()
:
String s = Character.toString((char)c);
EDIT:
Just remember that the escape sequences in Java source code (the \u
bits) are in HEX, so if you're trying to reproduce an escape sequence, you'll need something like int c = 0x2202
.
Subtracting 2 Date objects gives you the difference in milliseconds, e.g.:
var diff = Math.abs(new Date('2011/10/09 12:00') - new Date('2011/10/09 00:00'));
Math.abs
is used to be able to use the absolute difference (so new Date('2011/10/09 00:00') - new Date('2011/10/09 12:00')
gives the same result).
Dividing the result by 1000 gives you the number of seconds. Dividing that by 60 gives you the number of minutes. To round to whole minutes, use Math.floor
or Math.ceil
:
var minutes = Math.floor((diff/1000)/60);
In this example the result will be 720
Here is a working CSS/small JS solution based on the answer of Sandeep Pal:
$(document).click(function (e)
{
if (!$("#noticeMenu").is(e.target) && $("#noticeMenu").has(e.target).length == 0)
{
$("#menu-toggle3").prop('checked', false);
}
});
Try it out by clicking the checkbox and then outside of the menu:
C:\Users\<Username>\AppData\Local\Continuum\anaconda2
For me this was the default installation directory on Windows 7. Found it via Rusy's answer
If you don't wish to mess with IFS (perhaps for the code within the loop) this might help.
If know that your string will not have whitespace, you can substitute the ';' with a space and use the for/in construct:
#local str
for str in ${STR//;/ } ; do
echo "+ \"$str\""
done
But if you might have whitespace, then for this approach you will need to use a temp variable to hold the "rest" like this:
#local str rest
rest=$STR
while [ -n "$rest" ] ; do
str=${rest%%;*} # Everything up to the first ';'
# Trim up to the first ';' -- and handle final case, too.
[ "$rest" = "${rest/;/}" ] && rest= || rest=${rest#*;}
echo "+ \"$str\""
done
In httpd.conf
LoadModule headers_module modules/mod_headers.so
LoadModule rewrite_module modules/mod_rewrite.so
<Directory "**/usr/local/PATH**">
AllowOverride None
Require all granted
Header always set Access-Control-Allow-Origin "*"
Header always set Access-Control-Allow-Methods "POST, GET, OPTIONS, DELETE, PUT"
Header always set Access-Control-Allow-Headers "x-requested-with, Content-Type, origin, authorization, accept, client-security-token"
Header always set Access-Control-Expose-Headers "Content-Security-Policy, Location"
Header always set Access-Control-Max-Age "600"
RewriteEngine On
RewriteCond %{REQUEST_METHOD} OPTIONS
RewriteRule ^(.*)$ $1 [R=200,L]
</Directory>
If running outside container, you may need to restart apache service.
plz change %HTTPPORT% as 8080 its working for me
2.3.5 did not have input tap
, just input keyevent
and input text
You can use the monkeyrunner for it: (this is a copy of the answer at https://stackoverflow.com/a/18959385/1587329):
You might want to use monkeyrunner like this:
$ monkeyrunner
>>> from com.android.monkeyrunner import MonkeyRunner, MonkeyDevice
>>> device = MonkeyRunner.waitForConnection()
>>> device.touch(200, 400, MonkeyDevice.DOWN_AND_UP)
You can also do a drag, start activies etc. Have a look at the api for MonkeyDevice.
my_list = ['abc-123', 'def-456', 'ghi-789', 'abc-456']
for item in my_list:
if (item.find('abc')) != -1:
print ('Found at ', item)
Just remember that 2^(10*x) is approximately 10^(3*x) - you're probably already used to this with kilobytes/kibibytes etc. That is:
2^10 = 1024 ~= one thousand
2^20 = 1024^2 = 1048576 ~= one million
2^30 = 1024^3 = 1073741824 ~= one billion
Since an int uses 31 bits (+ ~1 bit for the sign), just double 2^30 to get approximately 2 billion. For an unsigned int using 32 bits, double again for 4 billion. The error factor gets higher the larger you go of course, but you don't need the exact value memorised (If you need it, you should be using a pre-defined constant for it anyway). The approximate value is good enough for noticing when something might be a dangerously close to overflowing.
Adding to the @htafoya answer. The code snippet will be
const getTimeEpoch = () => {
return new Date().getTime().toString();
}
More precisely, you have to force the addition of the tag, then push with option --tags and -f:
git tag -f -a <tagname>
git push -f --tags
Simply install Microsot.ReportViewer.2012.Runtime nuget package as shown in this answer https://stackoverflow.com/a/33014040/2198830
Just cd
to your working folder and then start the IPython notebook server
. This way you can be mobile.
You need antMatcher
for multiple HttpSecurity
, see Spring Security Reference:
5.7 Multiple HttpSecurity
We can configure multiple HttpSecurity instances just as we can have multiple
<http>
blocks. The key is to extend theWebSecurityConfigurationAdapter
multiple times. For example, the following is an example of having a different configuration for URL’s that start with/api/
.@EnableWebSecurity public class MultiHttpSecurityConfig { @Autowired public void configureGlobal(AuthenticationManagerBuilder auth) { 1 auth .inMemoryAuthentication() .withUser("user").password("password").roles("USER").and() .withUser("admin").password("password").roles("USER", "ADMIN"); } @Configuration @Order(1) 2 public static class ApiWebSecurityConfigurationAdapter extends WebSecurityConfigurerAdapter { protected void configure(HttpSecurity http) throws Exception { http .antMatcher("/api/**") 3 .authorizeRequests() .anyRequest().hasRole("ADMIN") .and() .httpBasic(); } } @Configuration 4 public static class FormLoginWebSecurityConfigurerAdapter extends WebSecurityConfigurerAdapter { @Override protected void configure(HttpSecurity http) throws Exception { http .authorizeRequests() .anyRequest().authenticated() .and() .formLogin(); } } }
1 Configure Authentication as normal
2 Create an instance of
WebSecurityConfigurerAdapter
that contains@Order
to specify whichWebSecurityConfigurerAdapter
should be considered first.3 The
http.antMatcher
states that thisHttpSecurity
will only be applicable to URLs that start with/api/
4 Create another instance of
WebSecurityConfigurerAdapter
. If the URL does not start with/api/
this configuration will be used. This configuration is considered afterApiWebSecurityConfigurationAdapter
since it has an@Order
value after1
(no@Order
defaults to last).
In your case you need no antMatcher
, because you have only one configuration. Your modified code:
http
.authorizeRequests()
.antMatchers("/high_level_url_A/sub_level_1").hasRole('USER')
.antMatchers("/high_level_url_A/sub_level_2").hasRole('USER2')
.somethingElse() // for /high_level_url_A/**
.antMatchers("/high_level_url_A/**").authenticated()
.antMatchers("/high_level_url_B/sub_level_1").permitAll()
.antMatchers("/high_level_url_B/sub_level_2").hasRole('USER3')
.somethingElse() // for /high_level_url_B/**
.antMatchers("/high_level_url_B/**").authenticated()
.anyRequest().permitAll()
Yes! you can Just download this app!
And if you want to know how do you use this app have a look at this video How To use NFC tools to emulate NFC as a tag app
Thank You! Please mark my answer if it helps you!
Directory.GetParent(Directory.GetCurrentDirectory()).Parent.Parent.Parent.Parent.FullName
Will give you the project directory.
First create an object of class2 in class1 and then use that object to call any function of class2 for example write this in class1
class2 obj= new class2();
obj.thefunctioname(args);
For those who are getting Error Unknown URI: content://downloads/public_downloads
.
I managed to solve this by getting a hint given by @Commonsware in this answer. I found out the class FileUtils on GitHub.
Here InputStream
methods are used to fetch file from Download
directory.
// DownloadsProvider
else if (isDownloadsDocument(uri)) {
final String id = DocumentsContract.getDocumentId(uri);
if (id != null && id.startsWith("raw:")) {
return id.substring(4);
}
String[] contentUriPrefixesToTry = new String[]{
"content://downloads/public_downloads",
"content://downloads/my_downloads",
"content://downloads/all_downloads"
};
for (String contentUriPrefix : contentUriPrefixesToTry) {
Uri contentUri = ContentUris.withAppendedId(Uri.parse(contentUriPrefix), Long.valueOf(id));
try {
String path = getDataColumn(context, contentUri, null, null);
if (path != null) {
return path;
}
} catch (Exception e) {}
}
// path could not be retrieved using ContentResolver, therefore copy file to accessible cache using streams
String fileName = getFileName(context, uri);
File cacheDir = getDocumentCacheDir(context);
File file = generateFileName(fileName, cacheDir);
String destinationPath = null;
if (file != null) {
destinationPath = file.getAbsolutePath();
saveFileFromUri(context, uri, destinationPath);
}
return destinationPath;
}
strTestString = Left(ThisWorkbook.Name, (InStrRev(ThisWorkbook.Name, ".", -1, vbTextCompare) - 1))
full credit: http://mariaevert.dk/vba/?p=162
This:
int fillarr(int arr[])
is actually treated the same as:
int fillarr(int *arr)
Now if you really want to return an array you can change that line to
int * fillarr(int arr[]){
// do something to arr
return arr;
}
It's not really returning an array. you're returning a pointer to the start of the array address.
But remember when you pass in the array, you're only passing in a pointer. So when you modify the array data, you're actually modifying the data that the pointer is pointing at. Therefore before you passed in the array, you must realise that you already have on the outside the modified result.
e.g.
int fillarr(int arr[]){
array[0] = 10;
array[1] = 5;
}
int main(int argc, char* argv[]){
int arr[] = { 1,2,3,4,5 };
// arr[0] == 1
// arr[1] == 2 etc
int result = fillarr(arr);
// arr[0] == 10
// arr[1] == 5
return 0;
}
I suggest you might want to consider putting a length into your fillarr function like this.
int * fillarr(int arr[], int length)
That way you can use length to fill the array to it's length no matter what it is.
To actually use it properly. Do something like this:
int * fillarr(int arr[], int length){
for (int i = 0; i < length; ++i){
// arr[i] = ? // do what you want to do here
}
return arr;
}
// then where you want to use it.
int arr[5];
int *arr2;
arr2 = fillarr(arr, 5);
// at this point, arr & arr2 are basically the same, just slightly
// different types. You can cast arr to a (char*) and it'll be the same.
If all you're wanting to do is set the array to some default values, consider using the built in memset function.
something like: memset((int*)&arr, 5, sizeof(int));
While I'm on the topic though. You say you're using C++. Have a look at using stl vectors. Your code is likely to be more robust.
There are lots of tutorials. Here is one that gives you an idea of how to use them. http://www.yolinux.com/TUTORIALS/LinuxTutorialC++STL.html
here is how to give permission for one user not public,
Direct Query:
Use MyDatabase
Grant execute on [dbo].[My-procedures-name] to [IIS APPPOOL\my-iis-pool]
Go