@Swapnil Godambe It works for me if JSON.stringfy is removed. That is:
$(jQuery.parseJSON(dataArray)).each(function() {
var ID = this.id;
var TITLE = this.Title;
});
You could also use the apache library and do this:
StringUtils.split(test, "|");
Your best bet is User-Agent header. You can get it like this in JSP or Servlet,
String userAgent = request.getHeader("User-Agent");
The header looks like this,
User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9.0.13) Gecko/2009073021 Firefox/3.0.13
It provides detailed information on browser. However, it's pretty much free format so it's very hard to decipher every single one. You just need to figure out which browsers you will support and write parser for each one. When you try to identify the version of browser, always check newer version first. For example, IE6 user-agent may contain IE5 for backward compatibility. If you check IE5 first, IE6 will be categorized as IE5 also.
You can get a full list of all user-agent values from this web site,
With User-Agent, you can tell the exact version of the browser. You can get a pretty good idea on OS but you may not be able to distinguish between different versions of the same OS, for example, Windows NT and 2000 may use same User-Agent.
There is nothing about resolution. However, you can get this with Javascript on an AJAX call.
For an excellent resource on how bash invocation works, what dotfiles do what, and how you should use/configure them, read this:
What your looking for is Reverse Geo Coding. Have a look at this example here. https://developers.google.com/maps/documentation/javascript/examples/geocoding-reverse
Further the previous answers about Dropbox, I implemented the following files tree such as only the PLIST file has to be uploaded to Dropbox:
use the option "Share the link with Dropbox" which copies the link to your clipboard. This link has to be copied into your html file into the itms-servivces URL's query after changing the part www.dropbox.com
by dl.dropboxusercontent.com
. Note I URL encoded the link as suggested by @Mike but I don't test without to do it. Now the itms-services URL's query should look like this: itms-services://?action=download-manifest&url=https%3A%2F%2Fdl.dropboxusercontent.com%2Fs%2FYourShortDropboxLink.plist
upload the html file to your server in http. Note the html file contains both links to ipa and provisioning files.
From now, only the ipa file has to be changed to provide next app versions by OTA to your beta testers. Until Apple is yet changing the security rules.
I join here after the very simple HTML file I'm using:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>iPhone app for test</title>
</head>
<body>
<h1>iPhone app for test</h1>
<br/>
<ul>
<li><a href="http://www.yourdomain.com/with/directories/provision/v.last/yourprovision_adhoc.mobileprovision">
Install Provisioning File</a></li>
<li><a href="itms-services://?action=download-manifest&url=https%3A%2F%2Fdl.dropboxusercontent.com%2Fs%2FYourShortDropboxLink.plist">
Install Application</a></li>
</ul>
</body>
</html>
As an alternative to sed or perl you may consider to use ed(1) and POSIX character classes.
Note: ed(1) reads the entire file into memory to edit it in-place, so for really large files you should use sed -i ..., perl -i ...
# see:
# - http://wiki.bash-hackers.org/doku.php?id=howto:edit-ed
# - http://en.wikipedia.org/wiki/Regular_expression#POSIX_character_classes
# test
echo $'aaa \177 bbb \200 \214 ccc \254 ddd\r\n' > testfile
ed -s testfile <<< $',l'
ed -s testfile <<< $'H\ng/[^[:graph:][:space:][:cntrl:]]/s///g\nwq'
ed -s testfile <<< $',l'
As a followup to CaffeineConnoisseur's very helpful benchmarking answer... I was curious as to how fast the 'mapfile' method was compared to others (as that wasn't tested), so I tried a quick-and-dirty speed comparison myself as I do have bash 4 handy. Threw in a test of the "tail | head" method (rather than head | tail) mentioned in one of the comments on the top answer while I was at it, as folks are singing its praises. I don't have anything nearly the size of the testfile used; the best I could find on short notice was a 14M pedigree file (long lines that are whitespace-separated, just under 12000 lines).
Short version: mapfile appears faster than the cut method, but slower than everything else, so I'd call it a dud. tail | head, OTOH, looks like it could be the fastest, although with a file this size the difference is not all that substantial compared to sed.
$ time head -11000 [filename] | tail -1
[output redacted]
real 0m0.117s
$ time cut -f11000 -d$'\n' [filename]
[output redacted]
real 0m1.081s
$ time awk 'NR == 11000 {print; exit}' [filename]
[output redacted]
real 0m0.058s
$ time perl -wnl -e '$.== 11000 && print && exit;' [filename]
[output redacted]
real 0m0.085s
$ time sed "11000q;d" [filename]
[output redacted]
real 0m0.031s
$ time (mapfile -s 11000 -n 1 ary < [filename]; echo ${ary[0]})
[output redacted]
real 0m0.309s
$ time tail -n+11000 [filename] | head -n1
[output redacted]
real 0m0.028s
Hope this helps!
Your error shows you are not compiling file with the definition of the insert
function. Update your command to include the file which contains the definition of that function and it should work.
since the problem is still there I though I throw in another solution.
My case was that I wanted to auto deploy all pull requests to s3 for testing before merge making them accessible on [mydomain]/pull-requests/[pr number]/
(ex. www.example.com/pull-requests/822/)
To the best of my knowledge non of s3 rules scenarios would allow to have multiple projects in one bucket using html5 routing so while above most voted suggestion works for a project in root folder, it doesn't for multiple projects in own subfolders.
So I pointed my domain to my server where following nginx config did the job
location /pull-requests/ {
try_files $uri @get_files;
}
location @get_files {
rewrite ^\/pull-requests\/(.*) /$1 break;
proxy_pass http://<your-amazon-bucket-url>;
proxy_intercept_errors on;
recursive_error_pages on;
error_page 404 = @get_routes;
}
location @get_routes {
rewrite ^\/(\w+)\/(.+) /$1/ break;
proxy_pass http://<your-amazon-bucket-url>;
proxy_intercept_errors on;
recursive_error_pages on;
error_page 404 = @not_found;
}
location @not_found {
return 404;
}
it tries to get the file and if not found assumes it is html5 route and tries that. If you have a 404 angular page for not found routes you will never get to @not_found and get you angular 404 page returned instead of not found files, which could be fixed with some if rule in @get_routes or something.
I have to say I don't feel too comfortable in area of nginx config and using regex for that matter, I got this working with some trial and error so while this works I am sure there is room for improvement and please do share your thoughts.
Note: remove s3 redirection rules if you had them in S3 config.
and btw works in Safari
Only if you need to support ancient versions of Internet Explorer.
The modern approach is to do margin: 0 auto
in your CSS.
Example here: http://jsfiddle.net/bKRMY/
HTML:
<p>Hello the following image is centered</p>
<p class="pic"><img src="https://twimg0-a.akamaihd.net/profile_images/440228301/StackoverflowLogo_reasonably_small.png"/></p>
<p>Did it work?</p>
CSS:
p.pic {
width: 48px;
margin: 0 auto;
}
The only issue here is that the width of the paragraph must be the same as the width of the image. If you don't put a width on the paragraph, it will not work, because it will assume 100% and your image will be aligned left, unless of course you use text-align:center
.
Try out the fiddle and experiment with it if you like.
Go to > Right CLick on your project folder > Build Path > Configure Build Path > Libraries Tab > remove project and external dependencies > apply & close
Now, Gradle refresh your project.
Using Java 8 Stream to replace leading zeroes in components. This code passed all tests on interviewbit.com
public int compareVersion(String A, String B) {
List<String> strList1 = Arrays.stream(A.split("\\."))
.map(s -> s.replaceAll("^0+(?!$)", ""))
.collect(Collectors.toList());
List<String> strList2 = Arrays.stream(B.split("\\."))
.map(s -> s.replaceAll("^0+(?!$)", ""))
.collect(Collectors.toList());
int len1 = strList1.size();
int len2 = strList2.size();
int i = 0;
while(i < len1 && i < len2){
if (strList1.get(i).length() > strList2.get(i).length()) return 1;
if (strList1.get(i).length() < strList2.get(i).length()) return -1;
int result = new Long(strList1.get(i)).compareTo(new Long(strList2.get(i)));
if (result != 0) return result;
i++;
}
while (i < len1){
if (!strList1.get(i++).equals("0")) return 1;
}
while (i < len2){
if (!strList2.get(i++).equals("0")) return -1;
}
return 0;
}
An easy way to overcome this problem is to use 64 bit type
list = numpy.array(list, dtype=numpy.float64)
Think like this:
class Animal { /* Some virtual members */ };
class Dog: public Animal {};
class Cat: public Animal {};
Dog dog;
Cat cat;
Animal& AnimalRef1 = dog; // Notice no cast required. (Dogs and cats are animals).
Animal& AnimalRef2 = cat;
Animal* AnimalPtr1 = &dog;
Animal* AnimlaPtr2 = &cat;
Cat& catRef1 = dynamic_cast<Cat&>(AnimalRef1); // Throws an exception AnimalRef1 is a dog
Cat* catPtr1 = dynamic_cast<Cat*>(AnimalPtr1); // Returns NULL AnimalPtr1 is a dog
Cat& catRef2 = dynamic_cast<Cat&>(AnimalRef2); // Works
Cat* catPtr2 = dynamic_cast<Cat*>(AnimalPtr2); // Works
// This on the other hand makes no sense
// An animal object is not a cat. Therefore it can not be treated like a Cat.
Animal a;
Cat& catRef1 = dynamic_cast<Cat&>(a); // Throws an exception Its not a CAT
Cat* catPtr1 = dynamic_cast<Cat*>(&a); // Returns NULL Its not a CAT.
Now looking back at your first statement:
Animal animal = cat; // This works. But it slices the cat part out and just
// assigns the animal part of the object.
Cat bigCat = animal; // Makes no sense.
// An animal is not a cat!!!!!
Dog bigDog = bigCat; // A cat is not a dog !!!!
You should very rarely ever need to use dynamic cast.
This is why we have virtual methods:
void makeNoise(Animal& animal)
{
animal.DoNoiseMake();
}
Dog dog;
Cat cat;
Duck duck;
Chicken chicken;
makeNoise(dog);
makeNoise(cat);
makeNoise(duck);
makeNoise(chicken);
The only reason I can think of is if you stored your object in a base class container:
std::vector<Animal*> barnYard;
barnYard.push_back(&dog);
barnYard.push_back(&cat);
barnYard.push_back(&duck);
barnYard.push_back(&chicken);
Dog* dog = dynamic_cast<Dog*>(barnYard[1]); // Note: NULL as this was the cat.
But if you need to cast particular objects back to Dogs then there is a fundamental problem in your design. You should be accessing properties via the virtual methods.
barnYard[1]->DoNoiseMake();
Here is an example that's working for me with MVC and Javascript in the Razor. The first function calls an action via ajax on my controller and passes two parameters.
function redirectToAction(var1, var2)
{
try{
var url = '../actionnameinsamecontroller/' + routeId;
$.ajax({
type: "GET",
url: url,
data: { param1: var1, param2: var2 },
dataType: 'html',
success: function(){
},
error: function(xhr, ajaxOptions, thrownError){
alert(error);
}
});
}
catch(err)
{
alert(err.message);
}
}
Use the ajaxStart to start your progress bar code.
$(document).ajaxStart(function(){
try
{
// showing a modal
$("#progressDialog").modal();
var i = 0;
var timeout = 750;
(function progressbar()
{
i++;
if(i < 1000)
{
// some code to make the progress bar move in a loop with a timeout to
// control the speed of the bar
iterateProgressBar();
setTimeout(progressbar, timeout);
}
}
)();
}
catch(err)
{
alert(err.message);
}
});
When the process completes close the progress bar
$(document).ajaxStop(function(){
// hide the progress bar
$("#progressDialog").modal('hide');
});
I always use the system types - e.g., Int32
instead of int
. I adopted this practice after reading Applied .NET Framework Programming - author Jeffrey Richter makes a good case for using the full type names. Here are the two points that stuck with me:
Type names can vary between .NET languages. For example, in C#, long
maps to System.Int64 while in C++ with managed extensions, long
maps to Int32. Since languages can be mixed-and-matched while using .NET, you can be sure that using the explicit class name will always be clearer, no matter the reader's preferred language.
Many framework methods have type names as part of their method names:
BinaryReader br = new BinaryReader( /* ... */ );
float val = br.ReadSingle(); // OK, but it looks a little odd...
Single val = br.ReadSingle(); // OK, and is easier to read
The tools sed
or tr
will do this for you by swapping the whitespace for nothing
sed 's/ //g'
tr -d ' '
Example:
$ echo " 3918912k " | sed 's/ //g'
3918912k
Under
Provisioning -> Distribution -> Distribution Provisioning Profiles
I downloaded the desired certificate again and installed it. Now I don't see an empty file in Xcode. The build also works now (no code sign error).
What I also did: I downloaded the WWDR and installed it, but I don't know if that was the reason (because I think it's always the same)
DECLARE @string NVARCHAR(50)
SET @string = 'CUT STRING'
SELECT LEFT(@string,(PATINDEX('% %',@string)))
i use this:
webBrowser.Document.InvokeScript("execScript", new object[] { "alert(123)", "JavaScript" })
In my case I was using jackson-databind-2.8.8.jar
that is not compatible with JDK 1.6
I need to use so Spring wasn't loading this converter. I downgraded the version and it works now.
we can write customise function which will call the callBack function if any changes in the state
import React, { useState, useEffect } from "react";
import ReactDOM from "react-dom";
import "./styles.css";
const useStateCallbackWrapper = (initilValue, callBack) => {
const [state, setState] = useState(initilValue);
useEffect(() => callBack(state), [state]);
return [state, setState];
};
const callBack = state => {
console.log("---------------", state);
};
function App() {
const [count, setCount] = useStateCallbackWrapper(0, callBack);
return (
<div className="App">
<h1>{count}</h1>
<button onClick={() => setCount(count + 1)}>+</button>
<h2>Start editing to see some magic happen!</h2>
</div>
);
}
const rootElement = document.getElementById("root");
ReactDOM.render(<App />, rootElement);
`
Your code isn't working, because the hidden attibute is not supported in versions of IE before v11
If you need to support IE before version 11, add a CSS style to hide when the hidden attribute is present:
*[hidden] { display: none; }
Actually, it depends on your definition of inheritance:
This is not what is usually meant by the term "inheritance", but it is also not entirely unreasonable to define it this way.
$('.second').find('div:first')
This was an old question, but existing answers ignore the serious issue of throwing away any custom attributes when you regenerate the model. I am adding a more detailed answer to cover the current options available.
[DisplayName("Name goes here")]
attribute to the data model class. The downside is that this is thrown away whenever you regenerate the data models.Html.LabelFor
. e.g. @Html.LabelFor(model => model.SomekingStatus, "My New Label", new { @class = "control-label"})
Reference: https://msdn.microsoft.com/en-us/library/system.web.mvc.html.labelextensions.labelfor(v=vs.118).aspx The downside to this is that you must repeat the label in every view.Microsoft allows for decorating properties on an Entity Framework class, without modifying the existing class! This by having meta-data classes that attach to your database classes (effectively a sideways extension of your EF class). This allow attributes to be added to the associated class and not to the class itself so the changes are not lost when you regenerate the data models.
For example, if your data class is MyModel
with a SomekingStatus
property, you could do it like this:
First declare a partial class of the same name (and using the same namespace), which allows you to add a class attribute without being overridden:
[MetadataType(typeof(MyModelMetaData))]
public partial class MyModel
{
}
All generated data model classes are partial classes, which allow you to add extra properties and methods by simply creating more classes of the same name (this is very handy and I often use it e.g. to provide formatted string versions of other field types in the model).
Step 2: add a metatadata class referenced by your new partial class:
public class MyModelMetaData
{
// Apply DisplayNameAttribute (or any other attributes)
[DisplayName("My New Label")]
public string SomekingStatus;
}
[required]
etc) so you may need to duplicate those in the Meta-data class.To find where the name google clashes .... try this:
python3
then >>> help('google')
... I got info about google-auth:
NAME
google
PACKAGE CONTENTS
auth (package)
oauth2 (package)
Also then try
pip show google-auth
Then
sudo pip3 uninstall google-auth
... and re-try >>> help('google')
I then see protobuf:
NAME
google
PACKAGE CONTENTS
protobuf (package)
Try using System.getProperty("line.separator")
to get a new line.
I give you two answers. npm combined with other tools is powerful but requires some work to setup. If you just want to download some libraries, you might want to use Library Manager instead (released in Visual Studio 15.8).
First add package.json in the root of you project. Add the following content:
{
"version": "1.0.0",
"name": "asp.net",
"private": true,
"devDependencies": {
"gulp": "3.9.1",
"del": "3.0.0"
},
"dependencies": {
"jquery": "3.3.1",
"jquery-validation": "1.17.0",
"jquery-validation-unobtrusive": "3.2.10",
"bootstrap": "3.3.7"
}
}
This will make NPM download Bootstrap, JQuery and other libraries that is used in a new asp.net core project to a folder named node_modules. Next step is to copy the files to an appropriate place. To do this we will use gulp, which also was downloaded by NPM. Then add a new file in the root of you project named gulpfile.js. Add the following content:
/// <binding AfterBuild='default' Clean='clean' />
/*
This file is the main entry point for defining Gulp tasks and using Gulp plugins.
Click here to learn more. http://go.microsoft.com/fwlink/?LinkId=518007
*/
var gulp = require('gulp');
var del = require('del');
var nodeRoot = './node_modules/';
var targetPath = './wwwroot/lib/';
gulp.task('clean', function () {
return del([targetPath + '/**/*']);
});
gulp.task('default', function () {
gulp.src(nodeRoot + "bootstrap/dist/js/*").pipe(gulp.dest(targetPath + "/bootstrap/dist/js"));
gulp.src(nodeRoot + "bootstrap/dist/css/*").pipe(gulp.dest(targetPath + "/bootstrap/dist/css"));
gulp.src(nodeRoot + "bootstrap/dist/fonts/*").pipe(gulp.dest(targetPath + "/bootstrap/dist/fonts"));
gulp.src(nodeRoot + "jquery/dist/jquery.js").pipe(gulp.dest(targetPath + "/jquery/dist"));
gulp.src(nodeRoot + "jquery/dist/jquery.min.js").pipe(gulp.dest(targetPath + "/jquery/dist"));
gulp.src(nodeRoot + "jquery/dist/jquery.min.map").pipe(gulp.dest(targetPath + "/jquery/dist"));
gulp.src(nodeRoot + "jquery-validation/dist/*.js").pipe(gulp.dest(targetPath + "/jquery-validation/dist"));
gulp.src(nodeRoot + "jquery-validation-unobtrusive/dist/*.js").pipe(gulp.dest(targetPath + "/jquery-validation-unobtrusive"));
});
This file contains a JavaScript code that is executed when the project is build and cleaned. It’s will copy all necessary files to lib2 (not lib – you can easily change this). I have used the same structure as in a new project, but it’s easy to change files to a different location. If you move the files, make sure you also update _Layout.cshtml. Note that all files in the lib2-directory will be removed when the project is cleaned.
If you right click on gulpfile.js, you can select Task Runner Explorer. From here you can run gulp manually to copy or clean files.
Gulp could also be useful for other tasks like minify JavaScript and CSS-files:
https://docs.microsoft.com/en-us/aspnet/core/client-side/using-gulp?view=aspnetcore-2.1
Right click on you project and select Manage client side-libraries. The file libman.json is now open. In this file you specify which library and files to use and where they should be stored locally. Really simple! The following file copies the default libraries that is used when creating a new ASP.NET Core 2.1 project:
{
"version": "1.0",
"defaultProvider": "cdnjs",
"libraries": [
{
"library": "[email protected]",
"files": [ "jquery.js", "jquery.min.map", "jquery.min.js" ],
"destination": "wwwroot/lib/jquery/dist/"
},
{
"library": "[email protected]",
"files": [ "additional-methods.js", "additional-methods.min.js", "jquery.validate.js", "jquery.validate.min.js" ],
"destination": "wwwroot/lib/jquery-validation/dist/"
},
{
"library": "[email protected]",
"files": [ "jquery.validate.unobtrusive.js", "jquery.validate.unobtrusive.min.js" ],
"destination": "wwwroot/lib/jquery-validation-unobtrusive/"
},
{
"library": "[email protected]",
"files": [
"css/bootstrap.css",
"css/bootstrap.css.map",
"css/bootstrap.min.css",
"css/bootstrap.min.css.map",
"css/bootstrap-theme.css",
"css/bootstrap-theme.css.map",
"css/bootstrap-theme.min.css",
"css/bootstrap-theme.min.css.map",
"fonts/glyphicons-halflings-regular.eot",
"fonts/glyphicons-halflings-regular.svg",
"fonts/glyphicons-halflings-regular.ttf",
"fonts/glyphicons-halflings-regular.woff",
"fonts/glyphicons-halflings-regular.woff2",
"js/bootstrap.js",
"js/bootstrap.min.js",
"js/npm.js"
],
"destination": "wwwroot/lib/bootstrap/dist"
},
{
"library": "[email protected]",
"files": [ "list.js", "list.min.js" ],
"destination": "wwwroot/lib/listjs"
}
]
}
If you move the files, make sure you also update _Layout.cshtml.
Try this:
var charArray = "this is a test".ToCharArray().Select(c=>c.ToString());
How can I programatically (C#) ZIP a file (in Windows) without using any third party libraries?
If using the 4.5+ Framework, there is now the ZipArchive and ZipFile classes.
using (ZipArchive zip = ZipFile.Open("test.zip", ZipArchiveMode.Create))
{
zip.CreateEntryFromFile(@"c:\something.txt", "data/path/something.txt");
}
You need to add references to:
For .NET Core targeting net46, you need to add dependencies for
Example project.json:
"dependencies": {
"System.IO.Compression": "4.1.0",
"System.IO.Compression.ZipFile": "4.0.1"
},
"frameworks": {
"net46": {}
}
For .NET Core 2.0, just adding a simple using statement is all that is needed:
Edited ZygD's answer for python 3.x.:
import re
import urllib.request
import string
url1 = input("Please enter a URL from Tunein Radio: ");
request = urllib.request.Request(url1);
response = urllib.request.urlopen(request);
raw_file = response.read().decode('utf-8');
API_key = re.findall(r"StreamUrl\":\"(.*?),\"",raw_file);
#print API_key;
#print "The API key is: " + API_key[0];
request2 = urllib.request.Request(str(API_key[0]));
response2 = urllib.request.urlopen(request2);
key_content = response2.read().decode('utf-8');
raw_stream_url = re.findall(r"Url\": \"(.*?)\"",key_content);
bandwidth = re.findall(r"Bandwidth\":(.*?),", key_content);
reliability = re.findall(r"lity\":(.*?),", key_content);
isPlaylist = re.findall(r"HasPlaylist\":(.*?),",key_content);
codec = re.findall(r"MediaType\": \"(.*?)\",", key_content);
tipe = re.findall(r"Type\": \"(.*?)\"", key_content);
total = 0
for element in raw_stream_url:
total = total + 1
i = 0
print ("I found " + str(total) + " streams.");
for element in raw_stream_url:
print ("Stream #" + str(i + 1));
print ("Stream stats:");
print ("Bandwidth: " + str(bandwidth[i]) + " kilobytes per second.");
print ("Reliability: " + str(reliability[i]) + "%");
print ("HasPlaylist: " + str(isPlaylist[i]));
print ("Stream codec: " + str(codec[i]));
print ("This audio stream is " + tipe[i].lower());
print ("Pure streaming URL: " + str(raw_stream_url[i]));
i = i + 1
input("Press enter to close")
Caveat!
The conversions occur from left to right.
Try this:
int i = 3, j = 2;
double k = 33;
cout << k * j / i << endl; // prints 22
cout << j / i * k << endl; // prints 0
Please check whether you have set two JAVA paths in the Environment Variable section. If you already installed two versions of the JDK, it might be, then double check you have put PATH for Java like below.
PATH --> C:\ProgramData\Oracle\Java\javapath
and also
JAVA_HOME ---> C:\Program Files\Java\jdk1.7.0_02\bin
If both are there, then this sort of error may occur.
If it's OK, then check in the ".ini" file the below area is OK or not. Open ".ini" file and check
-VM path is C:\Program Files\Java\jdk1.7.0_79\bin\
If not, please set it like that and run again.
If I may I could give you some new code for the same task, in my code you can create a so called 'document'(not really)and it is saved, and can be opened up again. It is also stored as a string file though(not a document). Here is the code:
#include "iostream"
#include "windows.h"
#include "string"
#include "fstream"
using namespace std;
int main() {
string saveload;
cout << "---------------------------" << endl;
cout << "|enter 'text' to write your document |" << endl;
cout << "|enter 'open file' to open the document |" << endl;
cout << "----------------------------------------" << endl;
while (true){
getline(cin, saveload);
if (saveload == "open file"){
string filenamet;
cout << "file name? " << endl;
getline(cin, filenamet, '*');
ifstream loadFile;
loadFile.open(filenamet, ifstream::in);
cout << "the text you entered was: ";
while (loadFile.good()){
cout << (char)loadFile.get();
Sleep(100);
}
cout << "" << endl;
loadFile.close();
}
if (saveload == "text") {
string filename;
cout << "file name: " << endl;
getline(cin, filename,'*');
string textToSave;
cout << "Enter your text: " << endl;
getline(cin, textToSave,'*');
ofstream saveFile(filename);
saveFile << textToSave;
saveFile.close();
}
}
return 0;
}
Just take this code and change it to serve your purpose. DREAM BIG,THINK BIG, DO BIG
try $conn = mysql_connect("localhost", "root")
or $conn = mysql_connect("localhost", "root", "")
JDBC is a much lower-level (and older) specification than JPA. In it's bare essentials, JDBC is an API for interacting with a database using pure SQL - sending queries and retrieving results. It has no notion of objects or hierarchies. When using JDBC, it's up to you to translate a result set (essentially a row/column matrix of values from one or more database tables, returned by your SQL query) into Java objects.
Now, to understand and use JDBC it's essential that you have some understanding and working knowledge of SQL. With that also comes a required insight into what a relational database is, how you work with it and concepts such as tables, columns, keys and relationships. Unless you have at least a basic understanding of databases, SQL and data modelling you will not be able to make much use of JDBC since it's really only a thin abstraction on top of these things.
The beauty of C++, like C, is that the sized of these things are implementation-defined, so there's no correct answer without your specifying the compiler you're using. Are those two the same? Yes. "long long" is a synonym for "long long int", for any compiler that will accept both.
This webpage have an explanation and a solution.
The solution is:
To fix this problem the behavior of the kernel has to be changed, so it will no longer overcommit the memory for application requests. Finally I have included those mentioned values into the /etc/sysctl.conf file, so they get automatically applied on start-up:
vm.overcommit_memory = 2
vm.overcommit_ratio = 80
A simple for loop which tests the checked
property and appends the checked ones to a separate array. From there, you can process the array of checkboxesChecked
further if needed.
// Pass the checkbox name to the function
function getCheckedBoxes(chkboxName) {
var checkboxes = document.getElementsByName(chkboxName);
var checkboxesChecked = [];
// loop over them all
for (var i=0; i<checkboxes.length; i++) {
// And stick the checked ones onto an array...
if (checkboxes[i].checked) {
checkboxesChecked.push(checkboxes[i]);
}
}
// Return the array if it is non-empty, or null
return checkboxesChecked.length > 0 ? checkboxesChecked : null;
}
// Call as
var checkedBoxes = getCheckedBoxes("mycheckboxes");
Set Multiple Unique key into table
ALTER TABLE table_name
ADD CONSTRAINT UC_table_name UNIQUE (field1,field2);
EDIT
Disregard - you can't use ItemOf (that's what I get for typing before I test). I'd strikethrough the text if I could figure out how...or maybe I'll simply delete the answer, since it was ultimately wrong and useless.
END EDIT
You can use the ItemOf(string)
property in the XmlAttributesCollection to see if the attribute exists. It returns null if it's not found.
foreach (XmlNode xNode in nodeListName)
{
if (xNode.ParentNode.Attributes.ItemOf["split"] != null)
{
parentSplit = xNode.ParentNode.Attributes["split"].Value;
}
}
In the version 3.2.4 of the XAMPP Control Panel, there is button that can open a command line prompt (red rectangle in the next figure)
After pressing the button, you will see the command prompt window.
From this window you can navigate through the different folders and start the different services available.
I think it should be R.color.black
Also take a look at Converting android color string in runtime into int
Down-casting and up-casting was as follows:
Upcasting: When we want to cast a Sub class to Super class, we use Upcasting(or widening). It happens automatically, no need to do anything explicitly.
Downcasting : When we want to cast a Super class to Sub class, we use Downcasting(or narrowing), and Downcasting is not directly possible in Java, explicitly we have to do.
Dog d = new Dog();
Animal a = (Animal) d; //Explicitly you have done upcasting. Actually no need, we can directly type cast like Animal a = d; compiler now treat Dog as Animal but still it is Dog even after upcasting
d.callme();
a.callme(); // It calls Dog's method even though we use Animal reference.
((Dog) a).callme2(); // Downcasting: Compiler does know Animal it is, In order to use Dog methods, we have to do typecast explicitly.
// Internally if it is not a Dog object it throws ClassCastException
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 ;
}
I have been pulling out hair from my head because I thought that I had the same problem. When building the app I didn't get the same result on my iPhone as on the simulator.
The problem was that I had somehow made a localized version of the MainStoryboard.storyboard file. So when I ran the app on my phone it showed the danish version... and the simulator showed the english version.
Yeah I'm new! :)
Inverse of a matrix using python and numpy:
>>> import numpy as np
>>> b = np.array([[2,3],[4,5]])
>>> np.linalg.inv(b)
array([[-2.5, 1.5],
[ 2. , -1. ]])
Not all matrices can be inverted. For example singular matrices are not Invertable:
>>> import numpy as np
>>> b = np.array([[2,3],[4,6]])
>>> np.linalg.inv(b)
LinAlgError: Singular matrix
Solution to singular matrix problem:
try-catch the Singular Matrix exception and keep going until you find a transform that meets your prior criteria AND is also invertable.
Intuition for why matrix inversion can't always be done; like in singular matrices:
Imagine an old overhead film projector that shines a bright light through film onto a white wall. The pixels in the film are projected to the pixels on the wall.
If I stop the film projection on a single frame, you will see the pixels of the film on the wall and I ask you to regenerate the film based on what you see. That's easy, you say, just take the inverse of the matrix that performed the projection. An Inverse of a matrix is the reversal of the projection.
Now imagine if the projector was corrupted, and I put a distorted lens in front of the film. Now multiple pixels are projected to the same spot on the wall. I asked you again to "undo this operation with the matrix inverse". You say: "I can't because you destroyed information with the lens distortion, I can't get back to where we were, because the matrix is either Singular or Degenerate."
A matrix that can be used to transform some data into other data is invertable only if the process can be reversed with no loss of information. If your matrix can't be inverted, perhaps you are defining your projection using a guess-and-check methodology rather than using a process that guarantees a non-corrupting transform.
If you're using a heuristic or anything less than perfect mathematical precision, then you'll have to define another process to manage and quarantine distortions so that programming by Brownian motion can resume.
Source:
http://docs.scipy.org/doc/numpy/reference/generated/numpy.linalg.inv.html#numpy.linalg.inv
I would also highly recommend Adminer - http://www.adminer.org/
It is much faster than phpMyAdmin, does less funky iframe stuff, and supports both MySQL and PostgreSQL.
Installing Ruby gems on a Mac is a common source of confusion and frustration. Unfortunately, most solutions are incomplete, outdated, and provide bad advice. I'm glad the accepted answer here says to NOT use sudo
, which you should never need to do, especially if you don't understand what it does. While I used RVM years ago, I would recommend chruby
in 2020.
Some of the other answers here provide alternative options for installing gems, but they don't mention the limitations of those solutions. What's missing is an explanation and comparison of the various options and why you might choose one over the other. I've attempted to cover most common scenarios in my definitive guide to installing Ruby gems on a Mac.
How about this?
SUM(IF(PaymentType = "credit card", totalamount, 0)) AS CreditCardTotal
I don't think your question is very clear, this code assumes that if you're going to include the -domain parameter, it's always 'named' (i.e. dostuff computername arg2 -domain domain); this also makes the computername parameter mandatory.
Function DoStuff(){
param(
[Parameter(Mandatory=$true)][string]$computername,
[Parameter(Mandatory=$false)][string]$arg2,
[Parameter(Mandatory=$false)][string]$domain
)
if(!($domain)){
$domain = 'domain1'
}
write-host $domain
if($arg2){
write-host "arg2 present... executing script block"
}
else{
write-host "arg2 missing... exiting or whatever"
}
}
You didn't specify how the order is determined, but this will give you a rank value in MySQL:
SELECT t.*,
@rownum := @rownum +1 AS rank
FROM TBL_FOO t
JOIN (SELECT @rownum := 0) r
WHERE t.name = 'sarmen'
Then you can pick out what rows you want, based on the rank value.
you can also print the data onto your HTML/JSP document. like:-
<!DOCTYPE html>
<html>
<head>
<title>Jsp Sample</title>
<%@page import="java.sql.*;"%>
</head>
<body bgcolor=yellow>
<%
try
{
Class.forName("com.mysql.jdbc.Driver");
Connection con=(Connection)DriverManager.getConnection(
"jdbc:mysql://localhost:3306/forum","root","root");
Statement st=con.createStatement();
ResultSet rs=st.executeQuery("select * from student;");
%><table border=1 align=center style="text-align:center">
<thead>
<tr>
<th>ID</th>
<th>NAME</th>
<th>SKILL</th>
<th>ACTION</th>
</tr>
</thead>
<tbody>
<%while(rs.next())
{
%>
<tr>
<td><%=rs.getString("id") %></td>
<td><%=rs.getString("name") %></td>
<td><%=rs.getString("skill") %></td>
<td><%=rs.getString("action") %></td>
</tr>
<%}%>
</tbody>
</table><br>
<%}
catch(Exception e){
out.print(e.getMessage());%><br><%
}
finally{
st.close();
con.close();
}
%>
</body>
</html>
<!--executeUpdate() mainupulation and executeQuery() for retriving-->
It's very easy to write that yourself, and that way you have more control over things.. As the other answers say, TypeScript is not aimed at adding runtime types or functionality.
Map:
class Map<T> {
private items: { [key: string]: T };
constructor() {
this.items = {};
}
add(key: string, value: T): void {
this.items[key] = value;
}
has(key: string): boolean {
return key in this.items;
}
get(key: string): T {
return this.items[key];
}
}
List:
class List<T> {
private items: Array<T>;
constructor() {
this.items = [];
}
size(): number {
return this.items.length;
}
add(value: T): void {
this.items.push(value);
}
get(index: number): T {
return this.items[index];
}
}
I haven't tested (or even tried to compile) this code, but it should give you a starting point.. you can of course then change what ever you want and add the functionality that YOU need...
As for your "special needs" from the List, I see no reason why to implement a linked list, since the javascript array lets you add and remove items.
Here's a modified version of the List to handle the get prev/next from the element itself:
class ListItem<T> {
private list: List<T>;
private index: number;
public value: T;
constructor(list: List<T>, value: T, index: number) {
this.list = list;
this.index = index;
this.value = value;
}
prev(): ListItem<T> {
return this.list.get(this.index - 1);
}
next(): ListItem<T> {
return this.list.get(this.index + 1);
}
}
class List<T> {
private items: Array<ListItem<T>>;
constructor() {
this.items = [];
}
size(): number {
return this.items.length;
}
add(value: T): void {
this.items.push(new ListItem<T>(this, value, this.size()));
}
get(index: number): ListItem<T> {
return this.items[index];
}
}
Here too you're looking at untested code..
Hope this helps.
Javascript has a native Map object so there's no need to create your own:
let map = new Map();
map.set("key1", "value1");
console.log(map.get("key1")); // value1
Use the substring()
function with an argument of 1
to get the substring from position 1 (after the first character) to the end of the string (leaving the second argument out defaults to the full length of the string).
"Jamaica".substring(1);
You can find more debugging info just simply adding the option -loglevel debug, full command will be
ffmpeg -i INPUT OUTPUT -loglevel debug -v verbose
Following is simple example that may help you:
json_string = """
{
"pk": 1,
"fa": "cc.ee",
"fb": {
"fc": "",
"fd_id": "12345"
}
}"""
import json
data = json.loads(json_string)
if data["fa"] == "cc.ee":
data["fb"]["new_key"] = "cc.ee was present!"
print json.dumps(data)
The output for the above code will be:
{"pk": 1, "fb": {"new_key": "cc.ee was present!", "fd_id": "12345",
"fc": ""}, "fa": "cc.ee"}
Note that you can set the ident argument of dump to print it like so (for example,when using print json.dumps(data , indent=4)):
{
"pk": 1,
"fb": {
"new_key": "cc.ee was present!",
"fd_id": "12345",
"fc": ""
},
"fa": "cc.ee"
}
Simple Analogy
A person may wait for their morning train. This is all they are doing as this is their primary task that they are currently performing. (synchronous programming (what you normally do!))
Another person may await their morning train whilst they smoke a cigarette and then drink their coffee. (Asynchronous programming)
What is asynchronous programming?
Asynchronous programming is where a programmer will choose to run some of his code on a separate thread from the main thread of execution and then notify the main thread on it's completion.
What does the async keyword actually do?
Prefixing the async keyword to a method name like
async void DoSomething(){ . . .
allows the programmer to use the await keyword when calling asynchronous tasks. That's all it does.
Why is this important?
In a lot of software systems the main thread is reserved for operations specifically relating to the User Interface. If I am running a very complex recursive algorithm that takes 5 seconds to complete on my computer, but I am running this on the Main Thread (UI thread) When the user tries to click on anything on my application, it will appear to be frozen as my main thread has queued and is currently processing far too many operations. As a result the main thread cannot process the mouse click to run the method from the button click.
When do you use Async and Await?
Use the asynchronous keywords ideally when you are doing anything that doesn't involve the user interface.
So lets say you're writing a program that allows the user to sketch on their mobile phone but every 5 seconds it is going to be checking the weather on the internet.
We should be awaiting the call the polling calls every 5 seconds to the network to get the weather as the user of the application needs to keep interacting with the mobile touch screen to draw pretty pictures.
How do you use Async and Await
Following on from the example above, here is some pseudo code of how to write it:
//ASYNCHRONOUS
//this is called using the await keyword every 5 seconds from a polling timer or something.
async Task CheckWeather()
{
var weather = await GetWeather();
//do something with the weather now you have it
}
async Task<WeatherResult> GetWeather()
{
var weatherJson = await CallToNetworkAddressToGetWeather();
return deserializeJson<weatherJson>(weatherJson);
}
//SYNCHRONOUS
//This method is called whenever the screen is pressed
void ScreenPressed()
{
DrawSketchOnScreen();
}
Additional Notes - Update
I forgot to mention in my original notes that in C# you can only await methods that are wrapped in Tasks. for example you may await this method:
// awaiting this will return a string.
// calling this without await (synchronously) will result in a Task<string> object.
async Task<string> FetchHelloWorld() {..
You cannot await methods that are not tasks like this:
async string FetchHelloWorld() {..
Feel free to review the source code for the Task class here.
You will need separate files for each resolution I am afraid. There is a really good article on campaign monitor describing how they created and implemented their icons for each iOS device too:
http://www.campaignmonitor.com/blog/post/3234/designing-campaign-monitor-ios-icons/
or you can use java 8 lambda
test.removeIf(i -> i==2);
it will simply remove all object that meet the condition
Try this:
<script type="text/javascript">
function test()
{
if($('input#field').length==0)
{
$('<input type="button" id="field"/>').appendTo('body');
}
}
</script>
Another option in case you don't wanna use a plugin:
Ctrl+` or
View -> Show Console
type on the console the following command:
view.encoding()
In case you want to something more intrusive, there's a option to create an shortcut that executes the following command:
sublime.message_dialog(view.encoding())
For this problem I just solve it by running:
react-native start
then
adb reverse tcp:8081 tcp:8081
on command line. And then i can run:
react-native run-android
So i will not waste my time to run:
react-native bundle --platform android --dev false --entry-file index.js --bundle-output android/app/src/main/assets/index.android.bundle --assets-dest android/app/src/main/res
every time.
You can find your solution from apple's DEMO in this page: WWDC 2013 , find out and download UIImageEffects sample code.
Then with @Jeremy Fox's code. I changed it to
- (UIImage*)getDarkBlurredImageWithTargetView:(UIView *)targetView
{
CGSize size = targetView.frame.size;
UIGraphicsBeginImageContext(size);
CGContextRef c = UIGraphicsGetCurrentContext();
CGContextTranslateCTM(c, 0, 0);
[targetView.layer renderInContext:c]; // view is the view you are grabbing the screen shot of. The view that is to be blurred.
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return [image applyDarkEffect];
}
Hope this will help you.
for more advanced python editing consider installing the simplefold vim plugin. it allows you do advanced code folding using regular expressions. i use it to fold my class and method definitions for faster editing.
To set timeout on a per page level, you could use this simple code:
Page.Server.ScriptTimeout = 60;
Note: 60 means 60 seconds, this time-out applies only if the debug attribute in the compilation element is False.
If you're like me and came here looking for a way to make sass --watch work with compass, the answer is to use Compass' version of watch, simply:
compass watch
If you're on a Mac and don't yet have the gem installed, you might run into errors when you try to install the Compass gem, due to permission problems that arise on OSX versions later than 10.11. Install ruby with Homebrew to get around this. See this answer for how to do that.
Alternatively you could just use CodeKit, but if you're stubborn like me and want to use Sublime Text and command line, this is the route to go.
Here is a snippet from me in testing... obviously passing via get to the script may not be the best... should post or just send an id and grab guid from db... anyhow.. this worked. I take the URL and convert it to a path.
// Initialize a file URL to the variable
$file = $_GET['url'];
$file = str_replace(Polepluginforrvms_Plugin::$install_url, $DOC_ROOT.'/pole-permitter/', $file );
$quoted = sprintf('"%s"', addcslashes(basename($file), '"\\'));
$size = filesize($file);
header( "Content-type: application/octet-stream" );
header( "Content-Disposition: attachment; filename={$quoted}" );
header( "Content-length: " . $size );
header( "Pragma: no-cache" );
header( "Expires: 0" );
readfile( "{$file}" );
The source code for the Android mobile application open-gpstracker which you appreciated is available here.
You can checkout the code using SVN client application or via Git:
Debugging the source code will surely help you.
This question is vague, but if you want to make the image with Javascript. It is simple.
function loadImages(src) {
if (document.images) {
img1 = new Image();
img1.src = src;
}
loadImages("image.jpg");
The image will be requested but until you show it it will never be displayed. great for pre loading images you expect to be requests but delaying it until the document is loaded.
You can change the colour two ways; through XML or through coding. I would recommend XML since it's easier to follow for beginners.
XML:
<Button
android:background="@android:color/white"
android:textColor="@android:color/black"
/>
You can also use hex values ex.
android:background="@android:color/white"
Coding:
//btn represents your button object
btn.setBackgroundColor(Color.WHITE);
btn.setTextColor(Color.BLACK);
After this
Two things to do:
Project Settings > Project compiler output > Set it as "Project path(You actual project's path)”+”\out”.
Project Settings > Module > Path > Choose "Inherit project compile path""
If button ran is not active
You must reload IDEA
INSERT INTO prices (group, id, price)
SELECT 7, articleId, 1.50 FROM article WHERE name LIKE 'ABC%'
I had a similar issue and based on above suggestions I first added "super.setIntegerProperty("loadUrlTimeoutValue", 70000);" but that did not help. So I tried Project -> Clean, that worked and I can launch the app now !
Avinash...
Add:
for i, v in enumerate(y):
ax.text(v + 3, i + .25, str(v), color='blue', fontweight='bold')
result:
The y-values v
are both the x-location and the string values for ax.text
, and conveniently the barplot has a metric of 1 for each bar, so the enumeration i
is the y-location.
You can use Array.push()
for appending elements to an array.
For deleting, it is best to use this.$delete(array, index)
for reactive objects.
Vue.delete( target, key )
: Delete a property on an object. If the object is reactive, ensure the deletion triggers view updates. This is primarily used to get around the limitation that Vue cannot detect property deletions, but you should rarely need to use it.
friends.get
Is function to get a list of friend's
And yes this is best
$friends = $facebook->api('/me/friends');
echo '<ul>';
foreach ($friends["data"] as $value) {
echo '<li>';
echo '<div class="pic">';
echo '<img src="https://graph.facebook.com/' . $value["id"] . '/picture"/>';
echo '</div>';
echo '<div class="picName">'.$value["name"].'</div>';
echo '</li>';
}
echo '</ul>';
It's a horribly obscure way to do a type conversion.
!
is NOT. So !true
is false
, and !false
is true
. !0
is true
, and !1
is false
.
So you're converting a value to a boolean, then inverting it, then inverting it again.
// Maximum Obscurity:
val.enabled = !!userId;
// Partial Obscurity:
val.enabled = (userId != 0) ? true : false;
// And finally, much easier to understand:
val.enabled = (userId != 0);
As others stated, it's likely failing because the requested key doesn't exist in the array. I have a helper function here that takes the array, the suspected key, as well as a default return in the event the key does not exist.
protected function _getArrayValue($array, $key, $default = null)
{
if (isset($array[$key])) return $array[$key];
return $default;
}
hope it helps.
System.currentTimeMillis()
does give you the number of milliseconds since January 1, 1970 00:00:00 UTC. The reason you see local times might be because you convert a Date
instance to a string before using it. You can use DateFormat
s to convert Date
s to String
s in any timezone:
DateFormat df = DateFormat.getTimeInstance();
df.setTimeZone(TimeZone.getTimeZone("gmt"));
String gmtTime = df.format(new Date());
gcc implements an extension to the C language to support sequential ranges:
switch (value)
{
case 1...3:
//Do Something
break;
case 4...6:
//Do Something
break;
default:
//Do the Default
break;
}
Edit: Just noticed the C# tag on the question, so presumably a gcc answer doesn't help.
if mysql is okay for you:
SELECT flights.*,
fromairports.city as fromCity,
toairports.city as toCity
FROM flights
LEFT JOIN (airports as fromairports, airports as toairports)
ON (fromairports.code=flights.fairport AND toairports.code=flights.tairport )
WHERE flights.fairport = '?' OR fromairports.city = '?'
edit: added example to filter the output for code or city
Your query should work fine, but you have to use the alias parent
to show the values of the parent table like this:
select
CONCAT(user.user_fname, ' ', user.user_lname) AS 'User Name',
CONCAT(parent.user_fname, ' ', parent.user_lname) AS 'Parent Name'
from users as user
inner join users as parent on parent.user_parent_id = user.user_id
where user.user_id = $_GET[id];
You can make your ImageButton widget as I did. In my case, I needed a widget with a fixed icon size. Let's start from custom attributes:
<?xml version="1.0" encoding="utf-8"?>
<resources>
<declare-styleable name="ImageButtonFixedIconSize">
<attr name="imageButton_icon" format="reference" />
<attr name="imageButton_iconWidth" format="dimension" />
<attr name="imageButton_iconHeight" format="dimension" />
</declare-styleable>
</resources>
Widget class is quite simple (the key point is padding calculations in onLayout method):
class ImageButtonFixedIconSize
@JvmOverloads
constructor(
context: Context,
attrs: AttributeSet? = null,
defStyleAttr: Int = android.R.attr.imageButtonStyle
) : ImageButton(context, attrs, defStyleAttr) {
private lateinit var icon: Drawable
@Px
private var iconWidth: Int = 0
@Px
private var iconHeight: Int = 0
init {
scaleType = ScaleType.FIT_XY
attrs?.let { retrieveAttributes(it) }
}
/**
*
*/
override fun onLayout(changed: Boolean, left: Int, top: Int, right: Int, bottom: Int) {
val width = right - left
val height = bottom - top
val horizontalPadding = if(width > iconWidth) (width - iconWidth) / 2 else 0
val verticalPadding = if(height > iconHeight) (height - iconHeight) / 2 else 0
setPadding(horizontalPadding, verticalPadding, horizontalPadding, verticalPadding)
setImageDrawable(icon)
super.onLayout(changed, left, top, right, bottom)
}
/**
*
*/
private fun retrieveAttributes(attrs: AttributeSet) {
val typedArray = context.obtainStyledAttributes(attrs, R.styleable.ImageButtonFixedIconSize)
icon = typedArray.getDrawable(R.styleable.ImageButtonFixedIconSize_imageButton_icon)!!
iconWidth = typedArray.getDimension(R.styleable.ImageButtonFixedIconSize_imageButton_iconWidth, 0f).toInt()
iconHeight = typedArray.getDimension(R.styleable.ImageButtonFixedIconSize_imageButton_iconHeight, 0f).toInt()
typedArray.recycle()
}
}
And at last you should use your widget like this:
<com.syleiman.gingermoney.ui.common.controls.ImageButtonFixedIconSize
android:layout_width="90dp"
android:layout_height="63dp"
app:imageButton_icon="@drawable/ic_backspace"
app:imageButton_iconWidth="20dp"
app:imageButton_iconHeight="15dp"
android:id="@+id/backspaceButton"
tools:ignore="ContentDescription"
/>
In addition to the potential locking problems you might cause you will also find that your transaction logs begin to grow as they can not be truncated past the minimum LSN for an active transaction and if you are using snapshot isolation your version store in tempdb will grow for similar reasons.
You can use dbcc opentran
to see details of the oldest open transaction.
You should use the csv
module to read the tab-separated value file. Do not read it into memory in one go. Each row you read has all the information you need to write rows to the output CSV file, after all. Keep the output file open throughout.
import csv
with open('sample.txt', newline='') as tsvin, open('new.csv', 'w', newline='') as csvout:
tsvin = csv.reader(tsvin, delimiter='\t')
csvout = csv.writer(csvout)
for row in tsvin:
count = int(row[4])
if count > 0:
csvout.writerows([row[2:4] for _ in range(count)])
or, using the itertools
module to do the repeating with itertools.repeat()
:
from itertools import repeat
import csv
with open('sample.txt', newline='') as tsvin, open('new.csv', 'w', newline='') as csvout:
tsvin = csv.reader(tsvin, delimiter='\t')
csvout = csv.writer(csvout)
for row in tsvin:
count = int(row[4])
if count > 0:
csvout.writerows(repeat(row[2:4], count))
If you can cope with the extra dependency then use twisted.log, you don't have to explicitly log errors and also it returns the entire traceback and time to the file or stream.
You can't close sockets on your server without owning those sockets hence you can't actually close the socket down without having code running in the process that owns the server socket.
However, there is another option which is telling the client to close its socket. Sending a RST TCP packet to the port the client is connecting on will cause the client to drop their connection. You can do that with RST scanning using nmap.
You should use new
when you wish an object to remain in existence until you delete
it. If you do not use new
then the object will be destroyed when it goes out of scope. Some examples of this are:
void foo()
{
Point p = Point(0,0);
} // p is now destroyed.
for (...)
{
Point p = Point(0,0);
} // p is destroyed after each loop
Some people will say that the use of new
decides whether your object is on the heap or the stack, but that is only true of variables declared within functions.
In the example below the location of 'p' will be where its containing object, Foo, is allocated. I prefer to call this 'in-place' allocation.
class Foo
{
Point p;
}; // p will be automatically destroyed when foo is.
Allocating (and freeing) objects with the use of new
is far more expensive than if they are allocated in-place so its use should be restricted to where necessary.
A second example of when to allocate via new
is for arrays. You cannot* change the size of an in-place or stack array at run-time so where you need an array of undetermined size it must be allocated via new.
E.g.
void foo(int size)
{
Point* pointArray = new Point[size];
...
delete [] pointArray;
}
(*pre-emptive nitpicking - yes, there are extensions that allow variable sized stack allocations).
Yes, ensure
ENSURES it is run every time, so you don't need the file.close
in the begin
block.
By the way, a good way to test is to do:
begin
# Raise an error here
raise "Error!!"
rescue
#handle the error here
ensure
p "=========inside ensure block"
end
You can test to see if "=========inside ensure block" will be printed out when there is an exception.
Then you can comment out the statement that raises the error and see if the ensure
statement is executed by seeing if anything gets printed out.
I prefer the following code to wait for 2 seconds.
for(int i=0; i<2 && driver.findElements(By.id("textbox")).size()==0 ; i++){
Thread.sleep(1000);
}
you can use myfaces tomahawk component
http://myfaces.apache.org/tomahawk-project/tomahawk12/tagdoc/t_div.html
I prefer to concatenate multiple Strings together. This works either for echo AND for variables. Also some IDEs auto-initialize new lines if you hit enter. This Syntax also generate small output because there are much less whitespaces in the strings.
echo ''
.'one {'
.' color: red;'
.'}'
;
$foo = ''
.'<h1>' . $bar . '</h1>' // insert value of bar
.$bar // insert value of bar again
."<p>$bar</p>" // and again
."<p>You can also use Double-Quoted \t Strings for single lines. \n To use Escape Sequences.</p>"
// also you can insert comments in middle, which aren't in the string.
.'<p>Or to insert Escape Sequences in middle '."\n".' of a string</p>'
;
Normally i start with an empty string and then append bit by bit to it:
$foo = '';
$foo .= 'function sayHello()'
.' alert( "Hello" );'
."}\n";
$foo .= 'function sum( a , b )'
.'{'
.' return a + b ;'
."}\n";
(Please stop Posts like "uh. You answer to an five jears old Question." Why not? There are much people searching for an answer. And what's wrong to use five year old ideas? If they don't find "their" solution they would open a new Question. Then the first five answers are only "use the search function before you ask!" So. I give you another solution to solve problems like this.)
It's ok to pass an array - in fact it amounts to the same thing
String.format("%s %s", "hello", "world!");
is the same as
String.format("%s %s", new Object[] { "hello", "world!"});
It's just syntactic sugar - the compiler converts the first one into the second, since the underlying method is expecting an array for the vararg parameter.
See
for(var key in object) {
console.log(object[key]);
}
Another option (just so you've seen it):
$(function () {
$(".inputs").click(function (e) {
alert(e.target.id);
});
});
HTH.
With this answer I refer to the answer from Software_Developer. By rebuilding the code I found that some parts are deprecated (gethostbyname()
) or do not provide error handling (creation of sockets, sending something) for an operation.
The following windows code is tested with Visual Studio 2013 and Windows 8.1 64-bit as well as Windows 7 64-bit. It will target an IPv4 TCP Connection with the Web Server of www.google.com.
#include <winsock2.h>
#include <WS2tcpip.h>
#include <windows.h>
#include <iostream>
#pragma comment(lib,"ws2_32.lib")
using namespace std;
int main (){
// Initialize Dependencies to the Windows Socket.
WSADATA wsaData;
if (WSAStartup(MAKEWORD(2,2), &wsaData) != 0) {
cout << "WSAStartup failed.\n";
system("pause");
return -1;
}
// We first prepare some "hints" for the "getaddrinfo" function
// to tell it, that we are looking for a IPv4 TCP Connection.
struct addrinfo hints;
ZeroMemory(&hints, sizeof(hints));
hints.ai_family = AF_INET; // We are targeting IPv4
hints.ai_protocol = IPPROTO_TCP; // We are targeting TCP
hints.ai_socktype = SOCK_STREAM; // We are targeting TCP so its SOCK_STREAM
// Aquiring of the IPv4 address of a host using the newer
// "getaddrinfo" function which outdated "gethostbyname".
// It will search for IPv4 addresses using the TCP-Protocol.
struct addrinfo* targetAdressInfo = NULL;
DWORD getAddrRes = getaddrinfo("www.google.com", NULL, &hints, &targetAdressInfo);
if (getAddrRes != 0 || targetAdressInfo == NULL)
{
cout << "Could not resolve the Host Name" << endl;
system("pause");
WSACleanup();
return -1;
}
// Create the Socket Address Informations, using IPv4
// We dont have to take care of sin_zero, it is only used to extend the length of SOCKADDR_IN to the size of SOCKADDR
SOCKADDR_IN sockAddr;
sockAddr.sin_addr = ((struct sockaddr_in*) targetAdressInfo->ai_addr)->sin_addr; // The IPv4 Address from the Address Resolution Result
sockAddr.sin_family = AF_INET; // IPv4
sockAddr.sin_port = htons(80); // HTTP Port: 80
// We have to free the Address-Information from getaddrinfo again
freeaddrinfo(targetAdressInfo);
// Creation of a socket for the communication with the Web Server,
// using IPv4 and the TCP-Protocol
SOCKET webSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if (webSocket == INVALID_SOCKET)
{
cout << "Creation of the Socket Failed" << endl;
system("pause");
WSACleanup();
return -1;
}
// Establishing a connection to the web Socket
cout << "Connecting...\n";
if(connect(webSocket, (SOCKADDR*)&sockAddr, sizeof(sockAddr)) != 0)
{
cout << "Could not connect";
system("pause");
closesocket(webSocket);
WSACleanup();
return -1;
}
cout << "Connected.\n";
// Sending a HTTP-GET-Request to the Web Server
const char* httpRequest = "GET / HTTP/1.1\r\nHost: www.google.com\r\nConnection: close\r\n\r\n";
int sentBytes = send(webSocket, httpRequest, strlen(httpRequest),0);
if (sentBytes < strlen(httpRequest) || sentBytes == SOCKET_ERROR)
{
cout << "Could not send the request to the Server" << endl;
system("pause");
closesocket(webSocket);
WSACleanup();
return -1;
}
// Receiving and Displaying an answer from the Web Server
char buffer[10000];
ZeroMemory(buffer, sizeof(buffer));
int dataLen;
while ((dataLen = recv(webSocket, buffer, sizeof(buffer), 0) > 0))
{
int i = 0;
while (buffer[i] >= 32 || buffer[i] == '\n' || buffer[i] == '\r') {
cout << buffer[i];
i += 1;
}
}
// Cleaning up Windows Socket Dependencies
closesocket(webSocket);
WSACleanup();
system("pause");
return 0;
}
References:
Have a look at fabric.transfer.
from fabric import Connection
with Connection(host="hostname",
user="admin",
connect_kwargs={"key_filename": "/home/myuser/.ssh/private.key"}
) as c:
c.get('/foo/bar/file.txt', '/tmp/')
What if you do this (as was suggested earlier):
new_time = dfs['XYF']['TimeUS'].astype(float)
new_time_F = new_time / 1000000
To mock a static method that return void for e.g. Fileutils.forceMKdir(File file),
Sample code:
File file =PowerMockito.mock(File.class);
PowerMockito.doNothing().when(FileUtils.class,"forceMkdir",file);
I'll give a slightly advanced answer. In Python, functions are first-class objects. This means they can be "dynamically created, destroyed, passed to a function, returned as a value, and have all the rights as other variables in the programming language have."
Calling a function/class instance in Python means invoking the __call__
method of that object. For old-style classes, class instances are also callable but only if the object which creates them has a __call__
method. The same applies for new-style classes, except there is no notion of "instance" with new-style classes. Rather they are "types" and "objects".
As quoted from the Python 2 Data Model page, for function objects, class instances(old style classes), and class objects(new-style classes), "x(arg1, arg2, ...)
is a shorthand for x.__call__(arg1, arg2, ...)
".
Thus whenever you define a function with the shorthand def funcname(parameters):
you are really just creating an object with a method __call__
and the shorthand for __call__
is to just name the instance and follow it with parentheses containing the arguments to the call. Because functions are first class objects in Python, they can be created on the fly with dynamic parameters (and thus accept dynamic arguments). This comes into handy with decorator functions/classes which you will read about later.
For now I suggest reading the Official Python Tutorial.
Section 6.5.8.6 of the C standard says:
Each of the operators < (less than), > (greater than), <= (less than or equal to), and >= (greater than or equal to) shall yield 1 if the specified relation is true and 0 if it is false.) The result has type int.
I came by this question with exactly the same issue as the asker. The answers here are very informing, and I tried out almost every single one of the suggested answers. None of the answers here worked for me though - there might have been a slight difference in my problem. And that seems to be the case for many. I tried so much before ending up with an answer.
So now I'm adding to the already long list of answers, a solution of my own that solved my kind of encoding problem.
I did just two things. In the database connection script I added:
mysql_set_charset('utf8',$connection);
and apart from that:
The point is that everything must be of the same encoding. And when creating new php-files, for the scripts it is not enough just to change the encoding in the script - the file itself must be correctly encoded.
FOR WINDOWS:
In my case, I was working on Windows OS and I got the same error while running autoconf.
Then I converted the File with EOL conversion into Windows (CR LF) as follows:
EDIT -> EOL CONVERSION -> WINDOWS (CR LF)
On a Mac (pdftex) I managed to include a png file simply with \includegraphics[width=1.2\textwidth]{filename.png}. But in order for that to work I had to comment out the following 2 packages:
%\usepackage[dvips]{epsfig}
%\usepackage[dvips]{graphicx}
...and simply use package graphicx:
\usepackage{graphicx}
It seems [dvips] is problematic when used with pdftex.
:sav new_name
:!rm <C-R># // or !del <C-R># for windows
control + R, # will instantly expand to an alternate-file (previously edited path in current window) before pressing Enter. That allows us to review what exactly we're going to delete.
Using pipe |
in such a case is not secure, because if sav
fails for any reason, #
will still point to another place (or to nothing). That means !rm #
or delete(expand(#))
may delete completely different file!
So do it by hand carefully or use good script (they are mentioned in many answers here).
...or try build a function/command/script yourself. Start from sth simple like:
command! -nargs=1 Rename saveas <args> | call delete(expand('#')) | bd #
after vimrc reload, just type :Rename new_filename
.
What is the problem with this command?
Security test 1: What does:Rename
without argument?
Yes, it deletes file hidden in '#' !
Solution: you can use eg. conditions or try
statement like that:
command! -nargs=1 Rename try | saveas <args> | call delete(expand('#')) | bd # | endtry
Security test 1:
:Rename
(without argument) will throw an error:
E471: Argument required
Security test 2: What if the name will be the same like previous one?
Security test 3: What if the file will be in different location than your actual?
Fix it yourself. For readability you can write it in this manner:
function! s:localscript_name(name):
try
execute 'saveas ' . a:name
...
endtry
endfunction
command! -nargs=1 Rename call s:localscript_name(<f-args>)
notes
!rm #
is better than !rm old_name
-> you don't need remember the old name
!rm <C-R>#
is better than !rm #
when do it by hand -> you will see what you actually remove (safety reason)
!rm
is generally not very secure... mv
to a trash location is better
call delete(expand('#'))
is better than shell command (OS agnostic) but longer to type and impossible to use control + R
try | code1 | code2 | tryend
-> when error occurs while code1, don't run code2
:sav
(or :saveas
) is equivalent to :f new_name | w
- see file_f - and preserves undo history
expand('%:p')
gives whole path of your location (%
) or location of alternate file (#
)
Yet another way is to read the composer.json file, but it can end with wildcard character *
The difference between compile time and run time is an example of what pointy-headed theorists call the phase distinction. It is one of the hardest concepts to learn, especially for people without much background in programming languages. To approach this problem, I find it helpful to ask
What can go wrong are run-time errors:
Also there can be errors that are detected by the program itself:
We're planning to use FitNesse, with the RestFixture. We haven't started writing our tests yet, our newest tester got things up and running last week, however he has used FitNesse for this in his last company, so we know it's a reasonable setup for what we want to do.
More info available here: http://smartrics.blogspot.com/2008/08/get-fitnesse-with-some-rest.html
You can't modify a collection while iterating it. That way lies madness - most notably, if you were allowed to delete and deleted the current item, the iterator would have to move on (+1) and the next call to next
would take you beyond that (+2), so you'd end up skipping one element (the one right behind the one you deleted). You have two options:
.keys()
et al for this (in Python 3, pass the resulting iterator to list
). Could be highly wasteful space-wise though.mydict
as usual, saving the keys to delete in a seperate collection to_delete
. When you're done iterating mydict
, delete all items in to_delete
from mydict
. Saves some (depending on how many keys are deleted and how many stay) space over the first approach, but also requires a few more lines.Selection
is its own object within VBA. It functions much like a Range
object.
Selection and Range do not share all the same properties and methods, though, so for ease of use it might make sense just to create a range and set it equal to the Selection, then you can deal with it programmatically like any other range.
Dim myRange as Range
Set myRange = Selection
For further reading, check out the MSDN article.
Please try with below code
var s = "15 Feb 2015 11.30 a.m";
var times = s.match("((([0-9])|([0-2][0-9])).([0-9][0-9])[\t ]?((a.m|p.m)|(A.M|P.M)))");
var time = "";
if(times != null){
var hour = times[2];
if((times[6] == "p.m" || times[6] == "P.M")){
if(hour < 12){
hour = parseInt(hour) + parseInt(12);
}else if(hour == 12){
hour = "00";
}
}
time = [hour, times[5], "00"].join(":");
}
Thanks
I know that this is quite old thing, but I solved issue like that: I had parent and child element was scrollable.
if ($('#parent > *').length == 0 ){
var wait = setInterval(function() {
if($('#parent > *').length != 0 ) {
$('#parent .child').bind('scroll',function() {
//do staff
});
clearInterval(wait);
},1000);
}
The issue I had is that I didn't know when the child is loaded to DOM, but I kept checking for it every second.
NOTE:this is useful if it happens soon but not right after document load, otherwise it will use clients computing power for no reason.
Run the following commands from git CLI:
# move to the wanted commit
git reset --hard <commit-hash>
# update remote
git push --force origin <branch-name>
using (SqlConnection connection = new SqlConnection("Data Source=localhost;Initial Catalog=LoginScreen;Integrated Security=True"))
{
SqlCommand command =
new SqlCommand("select * from Pending_Tasks WHERE CustomerId=...", connection);
connection.Open();
SqlDataReader read= command.ExecuteReader();
while (read.Read())
{
CustID.Text = (read["Customer_ID"].ToString());
CustName.Text = (read["Customer_Name"].ToString());
Add1.Text = (read["Address_1"].ToString());
Add2.Text = (read["Address_2"].ToString());
PostBox.Text = (read["Postcode"].ToString());
PassBox.Text = (read["Password"].ToString());
DatBox.Text = (read["Data_Important"].ToString());
LanNumb.Text = (read["Landline"].ToString());
MobNumber.Text = (read["Mobile"].ToString());
FaultRep.Text = (read["Fault_Report"].ToString());
}
read.Close();
}
Make sure you have data in the query : select * from Pending_Tasks and you are using "using System.Data.SqlClient;"
Branch prediction.
With a sorted array, the condition data[c] >= 128
is first false
for a streak of values, then becomes true
for all later values. That's easy to predict. With an unsorted array, you pay for the branching cost.
In most cases the solution of CD.. will work perfectly fine. However I had a bit more twisted situation:
@(String.IsNullOrEmpty(Model.MaidenName) ? " " : Model.MaidenName)
This would print me " " in my page, respectively generate the source &nbsp;
. Now there is a function Html.Raw(" ")
which is supposed to let you write source code, except in this constellation it throws a compiler error:
Compiler Error Message: CS0173: Type of conditional expression cannot be determined because there is no implicit conversion between 'System.Web.IHtmlString' and 'string'
So I ended up writing a statement like the following, which is less nice but works even in my case:
@if (String.IsNullOrEmpty(Model.MaidenName)) { @Html.Raw(" ") } else { @Model.MaidenName }
Note: interesting thing is, once you are inside the curly brace, you have to restart a Razor block.
This works for me, hacked it once to see if it is possible, but never actually used in my program (GUI is so much nicer):
import time
f = '%4i %%'
len_to_clear = len(f)+1
clear = '\x08'* len_to_clear
print 'Progress in percent:'+' '*(len_to_clear),
for i in range(123):
print clear+f % (i*100//123),
time.sleep(0.4)
raw_input('\nDone')
I don't use the same version, but uninstall actions are the same: Looking for file uninstall-postgresql inside directory
/Library/PostgreSQL/9.6
then run it.
(Screenshot in macOS 10.13)
then
sudo rm -rf /Library/PostgreSQL/
to delete all unnecessary directory.
On my Windows 8.1 64bit (Nexus 5 did not show up), only manually installing the USB driver fixed it: http://developer.android.com/sdk/win-usb.html The "Google USB Driver" in "Android SDK Manager" was installed already.
I think you need a service
that handle the authentication process (and its storage).
In this service you'll need some basic methods :
isAuthenticated()
login()
logout()
This service should be injected in your controllers of each module :
service.isAuthenticated()
method) . if not, redirect to /loginservice.login()
methodA good and robust example for this behavior is the project angular-app and specifically its security module which is based over the awesome HTTP Auth Interceptor Module
Hope this helps
I've a PHP library which helps to insert array into MySQL Database. By using this you can create update and delete. Your array key value should be same as the table column value. Just using a single line code for the create operation
DB::create($db, 'YOUR_TABLE_NAME', $dataArray);
where $db is your Database connection.
Similarly, You can use this for update and delete. Select operation will be available soon. Github link to download : https://github.com/pairavanvvl/crud
Yes Java allows vargs
in method parameter .
public class Varargs
{
public int add(int... numbers)
{
int result = 1;
for(int number: numbers)
{
result= result+number;
} return result;
}
}
Newer versions of OpenSSL say BEGIN PRIVATE KEY
because they contain the private key + an OID that identifies the key type (this is known as PKCS8 format). To get the old style key (known as either PKCS1 or traditional OpenSSL format) you can do this:
openssl rsa -in server.key -out server_new.key
Alternately, if you have a PKCS1 key and want PKCS8:
openssl pkcs8 -topk8 -nocrypt -in privkey.pem
If the directory you wish to save to is a sub-directory of your working directory, simply specify the relative path before your file name:
fig.savefig('Sub Directory/graph.png')
If you wish to use an absolute path, import the os module:
import os
my_path = os.path.abspath(__file__) # Figures out the absolute path for you in case your working directory moves around.
...
fig.savefig(my_path + '/Sub Directory/graph.png')
If you don't want to worry about the leading slash in front of the sub-directory name, you can join paths intelligently as follows:
import os
my_path = os.path.abspath(__file__) # Figures out the absolute path for you in case your working directory moves around.
my_file = 'graph.png'
...
fig.savefig(os.path.join(my_path, my_file))
Here is the simplest way:
Guid guid = Guid.NewGuid();
Random random = new Random();
int i = random.Next();
You'll notice that guid
is not actually used here, mainly because there would be no point in using it. Microsoft's GUID algorithm does not use the computer's MAC address any more - GUID's are actually generated using a pseudo-random generator (based on time values), so if you want a random integer it makes more sense to use the Random
class for this.
Update: actually, using a GUID to generate an int
would probably be worse than just using Random
("worse" in the sense that this would be more likely to generate collisions). This is because not all 128 bits in a GUID are random. Ideally, you would want to exclude the non-varying bits from a hashing function, although it would be a lot easier to just generate a random number, as I think I mentioned before. :)
I have found that, at least for "passcode"-like fields, doing something like <input type="tel" />
ends up producing the most authentic number-oriented field and it also has the benefit of no autoformatting. For example, in a mobile application I developed for Hilton recently, I ended up going with this:
... and my client was very impressed.
<form>_x000D_
<input type="tel" />_x000D_
<button type="submit">Submit</button>_x000D_
</form>
_x000D_
DataRow[] dtr=dtPerson.select("name=Joe");
foreach(var drow in dtr)
{
drow.delete();
}
dtperson.AcceptChanges();
I hope it will help you
If you get the object after creation (for instance after "seasonal_decompose"), you can always access and edit the properties of the plot; for instance, changing the color of the first subplot from blue to black:
plt.axes[0].get_lines()[0].set_color('black')
JVM : virtual machine of java. tells machine what to do with the Java Code. You cannot download JVM as is. It comes packaged in some other component.
JRE: Some other component referred as above is the JRE. It is JVM+ other jars to create runtime environmeny
JDK: contains JRE(which in turn contains JVM). Once you get JDK you need not install JRE and JVM separately. It contains compiler which compiles your .java files to .class files
What everyone is forgeting is explaining WHY this happens.
A Char, is basically an integer, but with a pointer in the ASCII table. All characters have a corresponding integer value as you can clearly see when trying to parse it.
Pranay has clearly a different character set, thats why HIS code doesnt work. the only way is
int val = '1' - '0';
because this looks up the integer value in the table of '0'
which is then the 'base value'
subtracting your number in char format from this will give you the original number.
The @Sharon-Ben-Asher answer is ok.
But in my case, for an array i have to use:
((ArrayNode) jsonNode).add("value");
Template argument deduction for class templates
[*this]{ std::cout << could << " be " << useful << '\n'; }
[[fallthrough]]
, [[nodiscard]]
, [[maybe_unused]]
attributes
using
in attributes to avoid having to repeat an attribute namespace.
Compilers are now required to ignore non-standard attributes they don't recognize.
Simple static_assert(expression);
with no string
no throw
unless throw()
, and throw()
is noexcept(true)
.
std::tie
with auto
const auto [it, inserted] = map.insert( {"foo", bar} );
it
and inserted
with deduced type from the pair
that map::insert
returns.std::array
s and relatively flat structsif (init; condition)
and switch (init; condition)
if (const auto [it, inserted] = map.insert( {"foo", bar} ); inserted)
if(decl)
to cases where decl
isn't convertible-to-bool sensibly.Generalizing range-based for loops
Fixed order-of-evaluation for (some) expressions with some modifications
.then
on future work.Forward progress guarantees (FPG) (also, FPGs for parallel algorithms)
u8'U', u8'T', u8'F', u8'8'
character literals (string already existed)
inherited constructors fixes to some corner cases (see P0136R0 for examples of behavior changes)
std::string
like reference-to-character-array or substringstring const&
again. Also can make parsing a bajillion times faster."hello world"sv
char_traits
std::byte
off more than they could chew.
std::invoke
std::apply
std::make_from_tuple
, std::apply
applied to object construction
is_invocable
, is_invocable_r
, invoke_result
result_of
is_invocable<Foo(Args...), R>
is "can you call Foo
with Args...
and get something compatible with R
", where R=void
is default.invoke_result<Foo, Args...>
is std::result_of_t<Foo(Args...)>
but apparently less confusing?[class.directory_iterator]
and [class.recursive_directory_iterator]
fstream
s can be opened with path
s, as well as with const path::value_type*
strings.
for_each_n
reduce
transform_reduce
exclusive_scan
inclusive_scan
transform_exclusive_scan
transform_inclusive_scan
Added for threading purposes, exposed even if you aren't using them threaded
atomic<T>
::is_always_lockfree
std::lock
pain when locking more than one mutex at a time.std
algorithms, and related machinery[func.searchers]
and [alg.search]
std::function
for allocatorsstd::sample
, sampling from a range?
try_emplace
and insert_or_assign
Splicing for map<>
, unordered_map<>
, set<>
, and unordered_set<>
non-const .data()
for string.
non-member std::size
, std::empty
, std::data
std::begin
/end
The emplace
family of functions now returns a reference to the created object.
unique_ptr<T[]>
fixes and other unique_ptr
tweaks.weak_from_this
and some fixed to shared from thisstd
datatype improvements:{}
construction of std::tuple
and other improvementsC++17 library is based on C11 instead of C99
Reserved std[0-9]+
for future standard libraries
std
implementations exposedstd::clamp()
std::clamp( a, b, c ) == std::max( b, std::min( a, c ) )
roughlygcd
and lcm
std::uncaught_exceptions
std::as_const
std::bool_constant
_v
template variablesstd::void_t<T>
std::owner_less<void>
std::less<void>
, but for smart pointers to sort based on contentsstd::chrono
polishstd::conjunction
, std::disjunction
, std::negation
exposedstd::not_fn
std
std::less
.<codecvt>
memory_order_consume
result_of
, replaced with invoke_result
shared_ptr::unique
, it isn't very threadsafeIsocpp.org has has an independent list of changes since C++14; it has been partly pillaged.
Naturally TS work continues in parallel, so there are some TS that are not-quite-ripe that will have to wait for the next iteration. The target for the next iteration is C++20 as previously planned, not C++19 as some rumors implied. C++1O has been avoided.
Initial list taken from this reddit post and this reddit post, with links added via googling or from the above isocpp.org page.
Additional entries pillaged from SD-6 feature-test list.
clang's feature list and library feature list are next to be pillaged. This doesn't seem to be reliable, as it is C++1z, not C++17.
these slides had some features missing elsewhere.
While "what was removed" was not asked, here is a short list of a few things ((mostly?) previous deprecated) that are removed in C++17 from C++:
register
, keyword reserved for future usebool b; ++b;
<functional>
stuff, random_shuffle
std::function
There were rewordings. I am unsure if these have any impact on code, or if they are just cleanups in the standard:
P0505R0 (constexpr chrono)
P0418R2 (atomic tweaks)
P0512R0 (template argument deduction tweaks)
P0490R0 (structured binding tweaks)
P0513R0 (changes to std::hash
)
P0502R0 (parallel exceptions)
P0509R1 (updating restrictions on exception handling)
P0012R1 (make exception specifications be part of the type system)
P0510R0 (restrictions on variants)
P0504R0 (tags for optional/variant/any)
P0497R0 (shared ptr tweaks)
P0508R0 (structured bindings node handles)
P0521R0 (shared pointer use count and unique changes?)
https://isocpp.org/files/papers/p0636r0.html
Use a wildcard (*
) to match multiple files.
For example, the command below will delete all files with names beginning with abc.log.2012-03-
.
rm -f abc.log.2012-03-*
I'd recommend running ls abc.log.2012-03-*
to list the files so that you can see what you are going to delete before running the rm
command.
For more details see the Bash man page on filename expansion.
You could read from a blocking queue in one thread and write to it in another thread.
One of the most common errors that I found developing Android Apps is the “java.lang.OutOfMemoryError: Bitmap Size Exceeds VM Budget” error. I found this error frequently on activities using lots of bitmaps after changing orientation: the Activity is destroyed, created again and the layouts are “inflated” from the XML consuming the VM memory available for bitmaps.
Bitmaps on the previous activity layout are not properly de-allocated by the garbage collector because they have crossed references to their activity. After many experiments I found a quite good solution for this problem.
First, set the “id” attribute on the parent view of your XML layout:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="@+id/RootView"
>
...
Then, on the onDestroy()
method of your Activity, call the unbindDrawables()
method passing a reference to the parent View and then do a System.gc()
.
@Override
protected void onDestroy() {
super.onDestroy();
unbindDrawables(findViewById(R.id.RootView));
System.gc();
}
private void unbindDrawables(View view) {
if (view.getBackground() != null) {
view.getBackground().setCallback(null);
}
if (view instanceof ViewGroup) {
for (int i = 0; i < ((ViewGroup) view).getChildCount(); i++) {
unbindDrawables(((ViewGroup) view).getChildAt(i));
}
((ViewGroup) view).removeAllViews();
}
}
This unbindDrawables()
method explores the view tree recursively and:
Two different characters.
\n
is used as an end-of-line terminator in Unix text files
\r
Was historically (pre-OS X) used as an end-of-line terminator in Mac text files
\r\n
(ie both) are used to terminate lines in Windows and DOS text files.
Add nil to the end of the declaration.
// Must be nil or swift complains
var someProtocol:SomeProtocol? = nil
// Init the view
override init(frame: CGRect)
super.init(frame: frame)
...
This worked for my case, but may not work for yours
This is a slightly more general answer with more explanation for future viewers.
If you want to find the text length or do something else after the text has been changed, you can add a text changed listener to your edit text.
EditText editText = (EditText) findViewById(R.id.testEditText);
editText.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence charSequence, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence charSequence, int start, int before, int count) {
}
@Override
public void afterTextChanged(Editable editable) {
}
});
The listener needs a TextWatcher
, which requires three methods to be overridden: beforeTextChanged
, onTextChanged
, and afterTextChanged
.
You can get the character count in onTextChanged
or beforeTextChanged
with
charSequence.length()
or in afterTextChanged
with
editable.length()
The parameters are a little confusing so here is a little extra explanation.
beforeTextChanged
beforeTextChanged(CharSequence charSequence, int start, int count, int after)
charSequence
: This is the text content before the pending change is made. You should not try to change it.start
: This is the index of where the new text will be inserted. If a range is selected, then it is the beginning index of the range.count
: This is the length of selected text that is going to be replaced. If nothing is selected then count
will be 0
.after
: this is the length of the text to be inserted. onTextChanged
onTextChanged(CharSequence charSequence, int start, int before, int count)
charSequence
: This is the text content after the change was made. You should not try to modify this value here. Modify the editable
in afterTextChanged
if you need to.start
: This is the index of the start of where the new text was inserted.before
: This is the old value. It is the length of previously selected text that was replaced. This is the same value as count
in beforeTextChanged
.count
: This is the length of text that was inserted. This is the same value as after
in beforeTextChanged
.afterTextChanged
afterTextChanged(Editable editable)
Like onTextChanged
, this is called after the change has already been made. However, now the text may be modified.
editable
: This is the editable text of the EditText
. If you change it, though, you have to be careful not to get into an infinite loop. See the documentation for more details.First off, that warning does not always mean so much. I usually disabled it after making sure it's not a performance bottle neck. It just means the IEnumerable
is evaluated twice, wich is usually not a problem unless the evaluation
itself takes a long time. Even if it does take a long time, in this case your only using one element the first time around.
In this scenario you could also exploit the powerful linq extension methods even more.
var firstObject = objects.First();
return DoSomeThing(firstObject).Concat(DoSomeThingElse(objects).ToList();
It is possible to only evaluate the IEnumerable
once in this case with some hassle, but profile first and see if it's really a problem.
You may be looking for
-webkit-appearance: none;
-webkit-appearance
-moz-appearance
If you are building an uberjar or "shaded jar", make sure your meta inf service files are merged. (This bit me multiple times on a dropwizard project.)
If you are using the gradle shadowJar plugin, you want to call mergeServiceFiles()
in your shadowJar
target: https://github.com/johnrengelman/shadow#merging-service-files
Not sure what the analogous commands are for maven or other build systems.
Your branch may not be up to date, a simple solution but try git fetch
If you are using Statement
, go for the following
//MY_NUMBER is the column name in the database
String generatedColumns[] = {"MY_NUMBER"};
Statement stmt = conn.createStatement();
//String sql holds the insert query
stmt.executeUpdate(sql, generatedColumns);
ResultSet rs = stmt.getGeneratedKeys();
// The generated id
if(rs.next())
long key = rs.getLong(1);
If you are using PreparedStatement
, go for the following
String generatedColumns[] = {"MY_NUMBER"};
PreparedStatement pstmt = conn.prepareStatement(sql,generatedColumns);
pstmt.setString(1, "qwerty");
pstmt.execute();
ResultSet rs = pstmt.getGeneratedKeys();
if(rs.next())
long key = rs.getLong(1);
If you need the transition to run infinitely, try the below example:
#box {_x000D_
position: relative;_x000D_
width: 100px;_x000D_
height: 100px;_x000D_
background-color: gray;_x000D_
border: 5px solid black;_x000D_
display: block;_x000D_
}_x000D_
_x000D_
#box:hover {_x000D_
border-color: red;_x000D_
animation-name: flash_border;_x000D_
animation-duration: 2s;_x000D_
animation-timing-function: linear;_x000D_
animation-iteration-count: infinite;_x000D_
-webkit-animation-name: flash_border;_x000D_
-webkit-animation-duration: 2s;_x000D_
-webkit-animation-timing-function: linear;_x000D_
-webkit-animation-iteration-count: infinite;_x000D_
-moz-animation-name: flash_border;_x000D_
-moz-animation-duration: 2s;_x000D_
-moz-animation-timing-function: linear;_x000D_
-moz-animation-iteration-count: infinite;_x000D_
}_x000D_
_x000D_
@keyframes flash_border {_x000D_
0% {_x000D_
border-color: red;_x000D_
}_x000D_
50% {_x000D_
border-color: black;_x000D_
}_x000D_
100% {_x000D_
border-color: red;_x000D_
}_x000D_
}_x000D_
_x000D_
@-webkit-keyframes flash_border {_x000D_
0% {_x000D_
border-color: red;_x000D_
}_x000D_
50% {_x000D_
border-color: black;_x000D_
}_x000D_
100% {_x000D_
border-color: red;_x000D_
}_x000D_
}_x000D_
_x000D_
@-moz-keyframes flash_border {_x000D_
0% {_x000D_
border-color: red;_x000D_
}_x000D_
50% {_x000D_
border-color: black;_x000D_
}_x000D_
100% {_x000D_
border-color: red;_x000D_
}_x000D_
}
_x000D_
<div id="box">roll over me</div>
_x000D_
Example in arrow functions:
let somethingTrue = true
[1,2,3,4,5].map(i=>somethingTrue && i*2)
In promises:
Promise.resolve()
.then(_=>checkTrueFalse && asyncFunc())
.then(_=>{ .. })
Otherwise:
if(somethingTrue) thenDo()
If it's just a simple conditional, I prefer using if(value) whenever possible because the word if in the beginning of the statement says more about what's happening than paranthesis and questionmarks.
In addition to mentioned methods it is worth mentioning that for server-to-server applications, you can also use this form of permanent access token: app_id|app_secret This type of access token is called App Token. It can generally be used to call Graph API and query for public nodes within your application back-end. It is mentioned here: https://developers.facebook.com/docs/facebook-login/access-tokens
This can be done in a much simpler manner now.
$tmpName = $_FILES['csv']['tmp_name'];
$csvAsArray = array_map('str_getcsv', file($tmpName));
This will return you a parsed array of your CSV data. Then you can just loop through it using a foreach statement.
it seems you can directly call:
g = sns.factorplot("class", "survived", "sex",
data=titanic, kind="bar",
size=6, palette="muted",
legend_out=False)
g._legend.set_bbox_to_anchor((.7, 1.1))
Regarding your second question, generally you don't need to use pointers while programming, however there is one exception to this and that is when you make a public API.
The problem with C++ constructs that people generally use to replace pointers are very dependent on the toolset that you use which is fine when you have all the control you need over the source code, however if you compile a static library with visual studio 2008 for instance and try to use it in a visual studio 2010 you will get a ton of linker errors because the new project is linked with a newer version of STL which is not backwards compatible. Things get even nastier if you compile a DLL and give an import library that people use in a different toolset because in that case your program will crash sooner or later for no apparent reason.
So for the purpose of moving large data sets from one library to another you could consider giving a pointer to an array to the function that is supposed to copy the data if you don't want to force others to use the same tools that you use. The good part about this is that it doesn't even have to be a C-style array, you can use a std::vector and give the pointer by giving the address of the first element &vector[0] for instance, and use the std::vector to manage the array internally.
Another good reason to use pointers in C++ again relates to libraries, consider having a dll that cannot be loaded when your program runs, so if you use an import library then the dependency isn't satisfied and the program crashes. This is the case for instance when you give a public api in a dll alongside your application and you want to access it from other applications. In this case in order to use the API you need to load the dll from its' location (usually it's in a registry key) and then you need to use a function pointer to be able to call functions inside the DLL. Sometimes the people that make the API are nice enough to give you a .h file that contain helper functions to automate this process and give you all the function pointers that you need, but if not you can use LoadLibrary and GetProcAddress on windows and dlopen and dlsym on unix to get them (considering that you know the entire signature of the function).
Thanks to malat. Your comment helped me.
But I want to add my try-catch block, as I found the MExeption
method getReport()
that returns the whole error message and prints it to the matlab console.
Additionally I printed the filename as this compilation is part of a batch script that calls matlab.
try
some_code
...
catch message
display(['ERROR in file: ' message.stack.file])
display(['ERROR: ' getReport(message)])
end;
For a false model name passed to legacy code generation method, the output would look like:
ERROR in file: C:\..\..\..
ERROR: Undefined function or variable 'modelname'.
Error in sub-m-file (line 63)
legacy_code( 'slblock_generate', specs, modelname);
Error in m-file (line 11)
sub-m-file
Error in run (line 63)
evalin('caller', [script ';']);
Finally, to display the output at the windows command prompt window, just log the matlab console to a file with -logfile logfile.txt
(use additionally -wait
) and call the batch command type logfile.txt
<hostA_shell_prompt>$ ssh user@hostB "ls -la"
That will prompt you for password, unless you have copied your hostA user's public key to the authorized_keys file on the home of user .ssh's directory. That will allow for passwordless authentication (if accepted as an auth method on the ssh server's configuration)
The other tutorials I've seen override the whole action bar layout hiding the MenuItems. I've got it worked just doing the following steps:
Create a xml file as following:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<TextView
android:id="@+id/title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:ellipsize="end"
android:maxLines="1"
android:text="@string/app_name"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="@android:color/white" />
</RelativeLayout>
And in the classe do it:
LayoutInflater inflator = (LayoutInflater) this.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View v = inflator.inflate(R.layout.action_bar_title, null);
ActionBar.LayoutParams params = new ActionBar.LayoutParams(ActionBar.LayoutParams.WRAP_CONTENT, ActionBar.LayoutParams.MATCH_PARENT, Gravity.CENTER);
TextView titleTV = (TextView) v.findViewById(R.id.title);
titleTV.setText("Test");
I think there are two options:
Use something like Pango that specializes in this via the NDK and render text to an OpenGL or other surface.
Use Paint.measureText() and friends to get the lengths of words and lay them out manually on a Canvas in a custom view.
Not sure if this is relevant to your question but it might be relevant to someone else in the future: I had a similar error. Turned out that the df was empty (had zero rows) and that is what was causing the error in my command.
It would seem that is.nan
doesn't actually have a method for data frames, unlike is.na
. So, let's fix that!
is.nan.data.frame <- function(x)
do.call(cbind, lapply(x, is.nan))
data123[is.nan(data123)] <- 0
Yes, it is normal. This is because you checkout a single commit, that doesnt have a head. Especially it is (sooner or later) not a head of any branch.
But there is usually no problem with that state. You may create a new branch from the tag, if this makes you feel safer :)
The problem in my case was that the Nginx web server was running as user nginx and the pool was running as user www-data.
I solved the issue by changing the user Nginx is running at in the /etc/nginx/nginx.conf
file (could be different on your system, mine is Ubuntu 16.04.1)
Change: user nginx;
to: user www-data;
then restart Nginx: service nginx restart
Managed to get answer after do some google..
echo "deb http://ppa.launchpad.net/webupd8team/java/ubuntu precise main" | tee -a /etc/apt/sources.list
echo "deb-src http://ppa.launchpad.net/webupd8team/java/ubuntu precise main" | tee -a /etc/apt/sources.list
apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys EEA14886
apt-get update
# Java 7
apt-get install oracle-java7-installer
# For Java 8 command is:
apt-get install oracle-java8-installer
Yes it is, there have to be boolean expresion after IF. Here you have a direct link. I hope it helps. GL!
def my_func(mandatory_arg, optional_arg=100):
print(mandatory_arg, optional_arg)
http://docs.python.org/2/tutorial/controlflow.html#default-argument-values
I find this more readable than using **kwargs
.
To determine if an argument was passed at all, I use a custom utility object as the default value:
MISSING = object()
def func(arg=MISSING):
if arg is MISSING:
...
For The Bootstrap 4+
This Code Worked Well for me
<div class="row">
<div class="col">
<div class="ml-auto">
this content will be in the Right
</div>
</div>
<div class="col mr-auto">
<div class="mr-auto">
this content will be in the leftt
</div>
</div>
</div>
First of all, if you're using method 3, you can replace those last 14 lines of code with this:
int result = myObject.calculateSomething(p1.orElse(null), p2.orElse(null));
The four variations you wrote are convenience methods. You should only use them when they're more convenient. That's also the best approach. That way, the API is very clear which members are necessary and which aren't. If you don't want to write four methods, you can clarify things by how you name your parameters:
public int calculateSomething(String p1OrNull, BigDecimal p2OrNull)
This way, it's clear that null values are allowed.
Your use of p1.orElse(null)
illustrates how verbose our code gets when using Optional, which is part of why I avoid it. Optional was written for functional programming. Streams need it. Your methods should probably never return Optional unless it's necessary to use them in functional programming. There are methods, like Optional.flatMap()
method, that requires a reference to a function that returns Optional. Here's its signature:
public <U> Optional<U> flatMap(Function<? super T, ? extends Optional<? extends U>> mapper)
So that's usually the only good reason for writing a method that returns Optional. But even there, it can be avoided. You can pass a getter that doesn't return Optional to a method like flatMap(), by wrapping it in a another method that converts the function to the right type. The wrapper method looks like this:
public static <T, U> Function<? super T, Optional<U>> optFun(Function<T, U> function) {
return t -> Optional.ofNullable(function.apply(t));
}
So suppose you have a getter like this: String getName()
You can't pass it to flatMap like this:
opt.flatMap(Widget::getName) // Won't work!
But you can pass it like this:
opt.flatMap(optFun(Widget::getName)) // Works great!
Outside of functional programming, Optionals should be avoided.
Brian Goetz said it best when he said this:
The reason Optional was added to Java is because this:
return Arrays.asList(enclosingInfo.getEnclosingClass().getDeclaredMethods())
.stream()
.filter(m -> Objects.equals(m.getName(), enclosingInfo.getName())
.filter(m -> Arrays.equals(m.getParameterTypes(), parameterClasses))
.filter(m -> Objects.equals(m.getReturnType(), returnType))
.findFirst()
.getOrThrow(() -> new InternalError(...));
is cleaner than this:
Method matching =
Arrays.asList(enclosingInfo.getEnclosingClass().getDeclaredMethods())
.stream()
.filter(m -> Objects.equals(m.getName(), enclosingInfo.getName())
.filter(m -> Arrays.equals(m.getParameterTypes(), parameterClasses))
.filter(m -> Objects.equals(m.getReturnType(), returnType))
.getFirst();
if (matching == null)
throw new InternalError("Enclosing method not found");
return matching;
With Git 2.23+ (August 2019), the best practice would be to use git switch
instead of the confusing git checkout
command.
To create a new branch based on an older version:
git switch -c temp_branch HEAD~2
To go back to the current master branch:
git switch master
Program Debug Database file (pdb) is a file format by Microsoft for storing debugging information.
When you build a project using Visual Studio or command prompt the compiler creates these symbol files.
Check Microsoft Docs
Is your link to another web page? If so, perhaps you could put the variable in the query string and set the session variable when the page being linked to is loaded.
So the link looks like this:
<a href="home.php?variable=value" name="home">home</a>
And the homge page would parse the query string and set the session variable.
I made an Objective-C version of Imagine Digitals swift answer above. I don't think I missed anything as it seems to work under preliminary testing, if you spot something let me know, and I'll update it
-(void) presentPopover
{
YourViewController* popoverContent = [[YourViewController alloc] init]; //this will be a subclass of UIViewController
UINavigationController* nav = [[UINavigationController alloc] initWithRootViewController:popoverContent];
nav.modalPresentationStyle = UIModalPresentationPopover;
UIPopoverPresentationController* popover = nav.popoverPresentationController;
popoverContent.preferredContentSize = CGSizeMake(500,600);
popover.delegate = self;
popover.sourceRect = CGRectMake(100,100,0,0); //I actually used popover.barButtonItem = self.myBarButton;
[self presentViewController:nav animated:YES completion:nil];
}
This is a specific issue for Windows Vista, 7, 8 (and presumably newer).
User Account Control (UAC) is a feature in Windows that can help you stay in control of your computer by informing you when a program makes a change that requires administrator-level permission. UAC works by adjusting the permission level of your user account.
This is applied mostly to C:\Program Files. You may have noticed sometimes, that some applications can see files in C:\Program Files that does not exist there. You know why? Windows now tend to have "C:\Program Files" folder customized for every user. For example, old applications store config files (like .ini) in the same folder where the executable files are stored. In the good old days all users had the same configurations for such apps. In nowadays Windows stores configs in the special folder tied to the user account. Thus, now different users may have different configs while application still think that config files are in the same folder with the executables.
XAMPP does not like to have different config for different users. In fact it is not a config file for XAMPP, it is folders where you keep your projects and databases. The idea of XAMPP is to make projects same for all users. This is a source of a conflict with Windows.
All you need is to avoid installing XAMPP into C:\Program Files. Thus XAMPP will always use the original files for all users and there would be no confusion.
I recommend to install XAMPP into the special folder in root directory like in C:\XAMPP. But before you choose the folder you need to click on this warning message.
It's so simple with URLSearchParams
, supported in all modern browsers (caniuse).
let p = new URLSearchParams();
p.set("foo", "bar");
p.set("name", "Jack & Jill?");
console.log("http://example.com/?" + p.toString());
_x000D_
If you want to modify the existing URL, construct the object like this: new URLSearchParams(window.location.search)
and assign the string to window.location.search
.
if you process the parameters immediately and then move to the next page, you can put a question mark on the end of the new location.
for example, if you would have done $location.path('/nextPage');
you can do this instead: $location.path('/nextPage?');
You can also consider using Record
, like this:
const someArray: Record<string, string>[] = [
{'first': 'one'},
{'second': 'two'}
];
Or write something like this:
const someArray: {key: string, value: string}[] = [
{key: 'first', value: 'one'},
{key: 'second', value: 'two'}
];
Take a look at Path.Combine
http://msdn.microsoft.com/en-us/library/fyy7a5kt.aspx
As mentioned in Yoshua Wuyts' answer, using git branch
:
git branch --unset-upstream
You don't have to delete your local branch.
Simply delete the local branch that is tracking the remote branch:
git branch -d -r origin/<remote branch name>
-r, --remotes
tells git to delete the remote-tracking branch (i.e., delete the branch set to track the remote branch). This will not delete the branch on the remote repo!
See "Having a hard time understanding git-fetch"
there's no such concept of local tracking branches, only remote tracking branches.
Soorigin/master
is a remote tracking branch formaster
in theorigin
repo
As mentioned in Dobes Vandermeer's answer, you also need to reset the configuration associated to the local branch:
git config --unset branch.<branch>.remote
git config --unset branch.<branch>.merge
Remove the upstream information for
<branchname>
.
If no branch is specified it defaults to the current branch.
(git 1.8+, Oct. 2012, commit b84869e by Carlos Martín Nieto (carlosmn
))
That will make any push/pull completely unaware of origin/<remote branch name>
.
In my case, I solved this by following these two steps
1. Go to android studio preferences -> other settings -> kotlin compiler -> set Target JVM version = 1.8
if it doesn't work then go to the second option.
2. In your module-level build.gradle file add
compileOptions {
sourceCompatibility = 1.8
targetCompatibility = 1.8
}
tasks.withType(org.jetbrains.kotlin.gradle.tasks.KotlinCompile).all {
kotlinOptions {
jvmTarget = "1.8"
}
}
Remember set sendfile off;
or cache headers doesn't work.
I use this snipped:
location / {
index index.php index.html index.htm;
try_files $uri $uri/ =404; #.s. el /index.html para html5Mode de angular
#.s. kill cache. use in dev
sendfile off;
add_header Last-Modified $date_gmt;
add_header Cache-Control 'no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0';
if_modified_since off;
expires off;
etag off;
proxy_no_cache 1;
proxy_cache_bypass 1;
}
Update
I also implemented the following solution in my Python script here on GitHub.
I also verified that damaged files (jpg) frequently are not 'broken' images i.e, a damaged picture file sometimes remains a legit picture file, the original image is lost or altered but you are still able to load it with no errors. But, file truncation cause always errors.
End Update
You can use Python Pillow(PIL) module, with most image formats, to check if a file is a valid and intact image file.
In the case you aim at detecting also broken images, @Nadia Alramli correctly suggests the im.verify()
method, but this does not detect all the possible image defects, e.g., im.verify
does not detect truncated images (that most viewers often load with a greyed area).
Pillow is able to detect these type of defects too, but you have to apply image manipulation or image decode/recode in or to trigger the check. Finally I suggest to use this code:
try:
im = Image.load(filename)
im.verify() #I perform also verify, don't know if he sees other types o defects
im.close() #reload is necessary in my case
im = Image.load(filename)
im.transpose(PIL.Image.FLIP_LEFT_RIGHT)
im.close()
except:
#manage excetions here
In case of image defects this code will raise an exception. Please consider that im.verify is about 100 times faster than performing the image manipulation (and I think that flip is one of the cheaper transformations). With this code you are going to verify a set of images at about 10 MBytes/sec with standard Pillow or 40 MBytes/sec with Pillow-SIMD module (modern 2.5Ghz x86_64 CPU).
For the other formats psd,xcf,.. you can use Imagemagick wrapper Wand, the code is as follows:
im = wand.image.Image(filename=filename)
temp = im.flip;
im.close()
But, from my experiments Wand does not detect truncated images, I think it loads lacking parts as greyed area without prompting.
I red that Imagemagick has an external command identify that could make the job, but I have not found a way to invoke that function programmatically and I have not tested this route.
I suggest to always perform a preliminary check, check the filesize to not be zero (or very small), is a very cheap idea:
statfile = os.stat(filename)
filesize = statfile.st_size
if filesize == 0:
#manage here the 'faulty image' case
var inValid = new RegExp('^[_A-z0-9]{1,}$');
var value = "test string";
var k = inValid.test(value);
alert(k);
Check to make sure you don't have threads within threads. That's what caused this error for me. See this link: Attempted to read or write protected memory. This is often an indication that other memory is corrupt
Gmail will only allow + sign as special character and in some cases (.) but any other special characters are not allowed at Gmail. RFC's says that you can use special characters but you should avoid sending mail to Gmail with special characters.
Select both the column you are sorting, and the column that the picture is in (I am assuming the picture is small compared to the cell, i.e. it is "in" the cell). Make sure that the object positioning property is set as "move but don't size with cells". Now if you do a sort, the pictures will move with the list being sorted.
Note - you must include the column with the picture in your range when you sort, and the picture must fit inside the cell.
The following VBA snippet will make sure all pictures in your spreadsheet have their "move and size" property set:
Sub moveAndSize()
Dim s As Shape
For Each s In ActiveSheet.Shapes
If s.Type = msoPicture Or s.Type = msoLinkedPicture Or s.Type = msoPlaceholder Then
s.Placement = xlMove
End If
Next
End Sub
If you want to make sure the picture continues to fit after you move it, you can use xlMoveAndSize
instead of xlMove
.
If you trust the data source, you can use eval
to convert your string into a dictionary:
eval(your_json_format_string)
Example:
>>> x = "{'a' : 1, 'b' : True, 'c' : 'C'}"
>>> y = eval(x)
>>> print x
{'a' : 1, 'b' : True, 'c' : 'C'}
>>> print y
{'a': 1, 'c': 'C', 'b': True}
>>> print type(x), type(y)
<type 'str'> <type 'dict'>
>>> print y['a'], type(y['a'])
1 <type 'int'>
>>> print y['a'], type(y['b'])
1 <type 'bool'>
>>> print y['a'], type(y['c'])
1 <type 'str'>
Suppose your class is called MyStudent. Here's how you define your class constructor:
Public Class MyStudent
Public StudentId As Integer
'Here's the class constructor:
Public Sub New(newStudentId As Integer)
StudentId = newStudentId
End Sub
End Class
Here's how you call it:
Dim student As New MyStudent(studentId)
Of course, your class constructor can contain as many or as few arguments as you need--even none, in which case you leave the parentheses empty. You can also have several constructors for the same class, all with different combinations of arguments. These are known as different "signatures" for your class constructor.
Seems like you can't iterate through JSONArray
with a for each
. You can loop through your JSONArray
like this:
for (int i=0; i < arr.length(); i++) {
arr.getJSONObject(i);
}
Modification on the most popular answer.
This takes a little more processing, but is more accurate.
<?php
//$a is a subset of $b
function isSubset($a, $b)
{
foreach($a =>$v)
if(array_search($v, $b) === false)
return false;
return true;
//less effecient, clearer implementation. (uses === for comparison)
//return array_intersect($a, $b) === $a;
}
function isAssoc($arr)
{
return !isSubset(array_keys($arr), range(0, count($arr) - 1));
}
var_dump(isAssoc(array('a', 'b', 'c'))); // false
var_dump(isAssoc(array(1 => 'a', 0 => 'b', 2 => 'c'))); // false
var_dump(isAssoc(array("0" => 'a', "1" => 'b', "2" => 'c'))); // false
//(use === in isSubset to get 'true' for above statement)
var_dump(isAssoc(array("a" => 'a', "b" => 'b', "c" => 'c'))); // true
?>
you can create user and grant privilege
create user read_only identified by read_only; grant create session,select any table to read_only;
The default
condition can be anyplace within the switch that a case clause can exist. It is not required to be the last clause. I have seen code that put the default as the first clause. The case 2:
gets executed normally, even though the default clause is above it.
As a test, I put the sample code in a function, called test(int value){}
and ran:
printf("0=%d\n", test(0));
printf("1=%d\n", test(1));
printf("2=%d\n", test(2));
printf("3=%d\n", test(3));
printf("4=%d\n", test(4));
The output is:
0=2
1=1
2=4
3=8
4=10
You're probably thinking of the java.util.ArrayList, not the array.
SELECT COUNT(*)
FROM (SELECT COUNT(*)
FROM movies
GROUP BY id
HAVING COUNT(genre) = 4) t
You can use filter .
@Override
public void doFilter(ServletRequest arg0, ServletResponse arg1, FilterChain arg2) throws IOException, ServletException {
HttpServletRequest test1= (HttpServletRequest) arg0;
test1.getRequestURL()); it gives http://localhost:8081/applicationName/menu/index.action
test1.getRequestURI()); it gives applicationName/menu/index.action
String pathname = test1.getServletPath()); it gives //menu/index.action
if(pathname.equals("//menu/index.action")){
arg2.doFilter(arg0, arg1); // call to urs servlet or frameowrk managed controller method
// in resposne
HttpServletResponse httpResp = (HttpServletResponse) arg1;
RequestDispatcher rd = arg0.getRequestDispatcher("another.jsp");
rd.forward(arg0, arg1);
}
donot forget to put <dispatcher>FORWARD</dispatcher>
in filter mapping in web.xml
I'm a begin fan of js array's reduce function.
const myArray =[1, 2, 3, 5, 2, 8, 9, 2];
const count = myArray.reduce((count, num) => num === 2 ? count + 1 : count, 0)
In fact if you really want to get fancy you can create a count function on the Array prototype. Then you can reuse it.
Array.prototype.count = function(filterMethod) {
return this.reduce((count, item) => filterMethod(item)? count + 1 : count, 0);
}
Then do
const myArray =[1, 2, 3, 5, 2, 8, 9, 2]
const count = myArray.count(x => x==2)
Do you override .ToString() on all of your objects that are in the properties? Otherwise, that second comparison could come back with null.
Also, in that second comparison, I'm on the fence about the construct of !( A == B) compared to (A != B), in terms of readability six months/two years from now. The line itself is pretty wide, which is ok if you've got a wide monitor, but might not print out very well. (nitpick)
Are all of your objects always using properties such that this code will work? Could there be some internal, non-propertied data that could be different from one object to another, but all exposed data is the same? I'm thinking of some data which could change over time, like two random number generators that happen to hit the same number at one point, but are going to produce two different sequences of information, or just any data that doesn't get exposed through the property interface.
I think you need str.contains
, if you need rows where values of column date
contains string 07311954
:
print df[df['date'].astype(str).str.contains('07311954')]
Or if type
of date
column is string
:
print df[df['date'].str.contains('07311954')]
If you want check last 4 digits for string
1954
in column date
:
print df[df['date'].astype(str).str[-4:].str.contains('1954')]
Sample:
print df['date']
0 8152007
1 9262007
2 7311954
3 2252011
4 2012011
5 2012011
6 2222011
7 2282011
Name: date, dtype: int64
print df['date'].astype(str).str[-4:].str.contains('1954')
0 False
1 False
2 True
3 False
4 False
5 False
6 False
7 False
Name: date, dtype: bool
print df[df['date'].astype(str).str[-4:].str.contains('1954')]
cmte_id trans_typ entity_typ state employer occupation date \
2 C00119040 24K CCM MD NaN NaN 7311954
amount fec_id cand_id
2 1000 C00140715 H2MD05155
@RequestParam
makes Spring to map request parameters from the GET/POST request to your method argument.
GET Request
http://testwebaddress.com/getInformation.do?city=Sydney&country=Australia
public String getCountryFactors(@RequestParam(value = "city") String city,
@RequestParam(value = "country") String country){ }
POST Request
@RequestBody
makes Spring to map entire request to a model class and from there you can retrieve or set values from its getter and setter methods. Check below.
http://testwebaddress.com/getInformation.do
You have JSON
data as such coming from the front end and hits your controller class
{
"city": "Sydney",
"country": "Australia"
}
Java
Code - backend (@RequestBody
)
public String getCountryFactors(@RequestBody Country countryFacts)
{
countryFacts.getCity();
countryFacts.getCountry();
}
public class Country {
private String city;
private String country;
public String getCity() {
return city;
}
public void setCity(String city) {
this.city = city;
}
public String getCountry() {
return country;
}
public void setCountry(String country) {
this.country = country;
}
}
function readFromRegistry (strRegistryKey, strDefault )
Dim WSHShell, value
On Error Resume Next
Set WSHShell = CreateObject("WScript.Shell")
value = WSHShell.RegRead( strRegistryKey )
if err.number <> 0 then
readFromRegistry= strDefault
else
readFromRegistry=value
end if
set WSHShell = nothing
end function
Usage :
str = readfromRegistry("HKEY_LOCAL_MACHINE\SOFTWARE\Adobe\ESD\Install_Dir", "ha")
wscript.echo "returned " & str
Another Alternative for those who are probing around and/or in interactive mode:
$Error[0].Exception.LoaderExceptions
Note: [0] grabs the most recent Error from the stack
With the new App Launcher YOUR APPS (not chrome extensions) stored in Users/[yourusername]/Applications/Chrome Apps/
You don't apply a binary mask to an image. You (optionally) use a binary mask in a processing function call to tell the function which pixels of the image you want to process. If I'm completely misinterpreting your question, you should add more detail to clarify.
If you're using jQuery 2.1.4 or above, try this:
$("#" + this.d);
Or, you can define var before using it. It makes your code simpler.
var d = this.d
$("#" + d);