@msb gives a safe solution.
I met this problem when I did import tensorflow as tf
in conda environment in CentOS 6.5
which only has glibc-2.12
.
ImportError: /lib64/libc.so.6: version `GLIBC_2.16' not found (required by /home/
I want to supply some details:
First install glibc
to your home directory:
mkdir ~/glibc-install; cd ~/glibc-install
wget http://ftp.gnu.org/gnu/glibc/glibc-2.17.tar.gz
tar -zxvf glibc-2.17.tar.gz
cd glibc-2.17
mkdir build
cd build
../configure --prefix=/home/myself/opt/glibc-2.17 # <-- where you install new glibc
make -j<number of CPU Cores> # You can find your <number of CPU Cores> by using **nproc** command
make install
Second, follow the same way to install patchelf;
Third, patch your Python:
[myself@nfkd ~]$ patchelf --set-interpreter /home/myself/opt/glibc-2.17/lib/ld-linux-x86-64.so.2 --set-rpath /home/myself/opt/glibc-2.17/lib/ /home/myself/miniconda3/envs/tensorflow/bin/python
as mentioned by @msb
Now I can use tensorflow-2.0 alpha
in CentOS 6.5
.
ref: https://serverkurma.com/linux/how-to-update-glibc-newer-version-on-centos-6-x/
i tried to set default time for a picker and it worked:
$('#date2').datetimepicker({
format: 'DD-MM-YYYY 12:00:00'
});
this will save in database as : 2015-03-01 12:00:00
used for smalldatetime
type in sql server
If you get this text in an alert:
function(){return JSON.encode(this);}
when you try alert(myArray[i]), then there are a few possibilities:
The simplest way to tell would be to check typeof(myArray[i]).
--pylab
no longer works for Jupyter, but fortunately we can add a tweak in the ipython_config.py
file to get both pylab
as well as autoreload
functionalities.
c.InteractiveShellApp.extensions = ['autoreload', 'pylab']
c.InteractiveShellApp.exec_lines = ['%autoreload 2', '%pylab']
This should not happen. Can you try doing this? Use the system properties and set the property as below:
Properties properties = System.getProperties();
// Setup mail server
properties.setProperty("mail.smtp.host", "10.101.3.229");
And if you have a port associated, then set this as well.
properties.setProperty("mail.smtp.port", "8080");
Just for fun, here's a fairly safe way to assign "unassigned" to a variable. For this to have a collision would require someone to have added to the prototype for Object with exactly the same name as the randomly generated string. I'm sure the random string generator could be improved, but I just took one from this question: Generate random string/characters in JavaScript
This works by creating a new object and trying to access a property on it with a randomly generated name, which we are assuming wont exist and will hence have the value of undefined.
function GenerateRandomString() {
var text = "";
var possible = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
for (var i = 0; i < 50; i++)
text += possible.charAt(Math.floor(Math.random() * possible.length));
return text;
}
var myVar = {}[GenerateRandomString()];
#element1 {float:left;}
#element2 {padding-left : 20px; float:left;}
fiddle : http://jsfiddle.net/sKqZJ/
or
#element1 {float:left;}
#element2 {margin-left : 20px;float:left;}
fiddle : http://jsfiddle.net/sKqZJ/1/
or
#element1 {padding-right : 20px; float:left;}
#element2 {float:left;}
fiddle : http://jsfiddle.net/sKqZJ/2/
or
#element1 {margin-right : 20px; float:left;}
#element2 {float:left;}
fiddle : http://jsfiddle.net/sKqZJ/3/
reference : The Difference Between CSS Margins and Padding
URL shortcut
private void urlShortcutToDesktop(string linkName, string linkUrl)
{
string deskDir = Environment.GetFolderPath(Environment.SpecialFolder.DesktopDirectory);
using (StreamWriter writer = new StreamWriter(deskDir + "\\" + linkName + ".url"))
{
writer.WriteLine("[InternetShortcut]");
writer.WriteLine("URL=" + linkUrl);
}
}
Application shortcut
private void appShortcutToDesktop(string linkName)
{
string deskDir = Environment.GetFolderPath(Environment.SpecialFolder.DesktopDirectory);
using (StreamWriter writer = new StreamWriter(deskDir + "\\" + linkName + ".url"))
{
string app = System.Reflection.Assembly.GetExecutingAssembly().Location;
writer.WriteLine("[InternetShortcut]");
writer.WriteLine("URL=file:///" + app);
writer.WriteLine("IconIndex=0");
string icon = app.Replace('\\', '/');
writer.WriteLine("IconFile=" + icon);
}
}
Also check this example.
If you want to use some API specific functions then you will want to use the IShellLink interface
as well as the IPersistFile interface
(through COM interop).
Here is an article that goes into detail what you need to do it, as well as sample code.
WARNING: Excel '07 (at least) has a(nother) bug: if there's a comma in the contents of a field, it doesn't parse the ="field, contents" correctly, but rather puts everything after the comma into the following field, regardless of the quotation marks.
The only workaround I've found that works is to eliminate the = when the field contents include a comma.
This may mean that there are some fields that are impossible to represent exactly "right" in Excel, but by now I trust no-one is too surprised.
As others have said, you are likely reading past the end of the file as you're only checking for x != ' '
. Instead you also have to check for EOF in the inner loop (but in this case don't use a char, but a sufficiently large type):
while ( ! file.eof() )
{
std::ifstream::int_type x = file.get();
while ( x != ' ' && x != std::ifstream::traits_type::eof() )
{
word += static_cast<char>(x);
x = file.get();
}
std::cout << word << '\n';
word.clear();
}
But then again, you can just employ the stream's streaming operators, which already separate at whitespace (and better account for multiple spaces and other kinds of whitepsace):
void readFile( )
{
std::ifstream file("program.txt");
for(std::string word; file >> word; )
std::cout << word << '\n';
}
And even further, you can employ a standard algorithm to get rid of the manual loop altogether:
#include <algorithm>
#include <iterator>
void readFile( )
{
std::ifstream file("program.txt");
std::copy(std::istream_iterator<std::string>(file),
std::istream_itetator<std::string>(),
std::ostream_iterator<std::string>(std::cout, "\n"));
}
For IntelliJ IDEA or Android Studio:
Add this to app.gradle build file
dependencies {
compile "com.android.support:appcompat-v7:21.0.+"
}
Replace -v:xx.0+
, with your build target, if you have 19 platform
then it must be like:
dependencies {
compile "com.android.support:appcompat-v7:19.0.+"
}
You can use a combination of pwd and basename. E.g.
#!/bin/bash
CURRENT=`pwd`
BASENAME=`basename "$CURRENT"`
echo "$BASENAME"
exit;
Here is a function you can use to parse AJAX responses, especially if you use minifiedjs and want it to execute the returned Javascript or just want to parse the scripts without adding them to the DOM, it handles exception errors as well. I used this code in php4sack library and it is useful outside of the library.
function parseScript(_source) {
var source = _source;
var scripts = new Array();
// Strip out tags
while(source.toLowerCase().indexOf("<script") > -1 || source.toLowerCase().indexOf("</script") > -1) {
var s = source.toLowerCase().indexOf("<script");
var s_e = source.indexOf(">", s);
var e = source.toLowerCase().indexOf("</script", s);
var e_e = source.indexOf(">", e);
// Add to scripts array
scripts.push(source.substring(s_e+1, e));
// Strip from source
source = source.substring(0, s) + source.substring(e_e+1);
}
// Loop through every script collected and eval it
for(var i=0; i<scripts.length; i++) {
try {
if (scripts[i] != '')
{
try { //IE
execScript(scripts[i]);
}
catch(ex) //Firefox
{
window.eval(scripts[i]);
}
}
}
catch(e) {
// do what you want here when a script fails
// window.alert('Script failed to run - '+scripts[i]);
if (e instanceof SyntaxError) console.log (e.message+' - '+scripts[i]);
}
}
// Return the cleaned source
return source;
}
I had already faced this issue. In my case below code is correct.
Objective C
[textField setValue:[UIColor whiteColor] forKeyPath:@"_placeholderLabel.textColor"];
For Swift 4.X
tf_mobile.setValue(UIColor.white, forKeyPath: "_placeholderLabel.textColor")
For iOS 13 Swift Code
tf_mobile.attributedPlaceholder = NSAttributedString(string:"PlaceHolder Text", attributes: [NSAttributedString.Key.foregroundColor: UIColor.red])
You can also use below code for iOS 13
let iVar = class_getInstanceVariable(UITextField.self, "_placeholderLabel")!
let placeholderLabel = object_getIvar(tf_mobile, iVar) as! UILabel
placeholderLabel.textColor = .red
Hope, this may help you.
If the iFrame content is not yours then the solution below will not work.
With Android all you need to do is to surround the iframe with a DIV and set the height on the div to document.documentElement.clientHeight. IOS, however, is a different animal. Although I have not yet tried Sharon's solution it does seem like a good solution. I did find a simpler solution but it only works with IOS 5.+.
Surround your iframe element with a DIV (lets call it scroller), set the height of the DIV and make sure that the new DIV has the following styling:
$('#scroller').css({'overflow' : 'auto', '-webkit-overflow-scrolling' : 'touch'});
This alone will work but you will notice that in most implementations the content in the iframe goes blank when scrolling and is basically rendered useless. My understanding is that this behavior has been reported as a bug to Apple as early as iOS 5.0. To get around that problem, find the body element in the iframe and add -webkit-transform', 'translate3d(0, 0, 0) like so:
$('#contentIframe').contents().find('body').css('-webkit-transform', 'translate3d(0, 0, 0)');
If your app or iframe is heavy on memory usage you might get a hitchy scroll for which you might need to use Sharon's solution.
There's also the undocumented value of "none" to disable it entirely.
I haven’t actually done anything with font-face
, so take this with a pinch of salt, but I don’t think there’s any way for the browser to definitively tell if a given web font installed on a user’s machine or not.
The user could, for example, have a different font with the same name installed on their machine. The only way to definitively tell would be to compare the font files to see if they’re identical. And the browser couldn’t do that without downloading your web font first.
Does Firefox download the font when you actually use it in a font
declaration? (e.g. h1 { font: 'DejaVu Serif';
)?
This is a simple way to do it!
<link href="https://cdnjs.cloudflare.com/ajax/libs/toastr.js/2.0.1/css/toastr.css" rel="stylesheet"/>
<script src="https://cdnjs.cloudflare.com/ajax/libs/toastr.js/2.0.1/js/toastr.js"></script>
<script>
function notificationme(){
toastr.options = {
"closeButton": false,
"debug": false,
"newestOnTop": false,
"progressBar": true,
"preventDuplicates": true,
"onclick": null,
"showDuration": "100",
"hideDuration": "1000",
"timeOut": "5000",
"extendedTimeOut": "1000",
"showEasing": "swing",
"hideEasing": "linear",
"showMethod": "show",
"hideMethod": "hide"
};
toastr.info('MY MESSAGE!');
}
</script>
Update: Angular 1.1.5 added a ternary operator, so now we can simply write
<li ng-class="$first ? 'firstRow' : 'nonFirstRow'">
If you are using an earlier version of Angular, your two choices are:
(condition && result_if_true || !condition && result_if_false)
{true: 'result_if_true', false: 'result_if_false'}[condition]
item 2. above creates an object with two properties. The array syntax is used to select either the property with name true or the property with name false, and return the associated value.
E.g.,
<li class="{{{true: 'myClass1 myClass2', false: ''}[$first]}}">...</li>
or
<li ng-class="{true: 'myClass1 myClass2', false: ''}[$first]">...</li>
$first is set to true inside an ng-repeat for the first element, so the above would apply class 'myClass1' and 'myClass2' only the first time through the loop.
With ng-class there is an easier way though: ng-class takes an expression that must evaluate to one of the following:
An example of 1) was given above. Here is an example of 3, which I think reads much better:
<li ng-class="{myClass: $first, anotherClass: $index == 2}">...</li>
The first time through an ng-repeat loop, class myClass is added. The 3rd time through ($index starts at 0), class anotherClass is added.
ng-style takes an expression that must evaluate to a map/object of CSS style names to CSS values. E.g.,
<li ng-style="{true: {color: 'red'}, false: {}}[$first]">...</li>
You need to set the error mode attribute PDO::ATTR_ERRMODE to PDO::ERRMODE_EXCEPTION.
And since you expect the exception to be thrown by the prepare() method you should disable the PDO::ATTR_EMULATE_PREPARES* feature. Otherwise the MySQL server doesn't "see" the statement until it's executed.
<?php
try {
$pdo = new PDO('mysql:host=localhost;dbname=test;charset=utf8', 'localonly', 'localonly');
$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$pdo->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);
$pdo->prepare('INSERT INTO DoesNotExist (x) VALUES (?)');
}
catch(Exception $e) {
echo 'Exception -> ';
var_dump($e->getMessage());
}
prints (in my case)
Exception -> string(91) "SQLSTATE[42S02]: Base table or view not found:
1146 Table 'test.doesnotexist' doesn't exist"
see http://wezfurlong.org/blog/2006/apr/using-pdo-mysql/
EMULATE_PREPARES=true seems to be the default setting for the pdo_mysql driver right now.
The query cache thing has been fixed/change since then and with the mysqlnd driver I hadn't problems with EMULATE_PREPARES=false (though I'm only a php hobbyist, don't take my word on it...)
*) and then there's PDO::MYSQL_ATTR_DIRECT_QUERY - I must admit that I don't understand the interaction of those two attributes (yet?), so I set them both, like
$pdo = new PDO('mysql:host=localhost;dbname=test;charset=utf8', 'localonly', 'localonly', array(
PDO::ATTR_EMULATE_PREPARES=>false,
PDO::MYSQL_ATTR_DIRECT_QUERY=>false,
PDO::ATTR_ERRMODE=>PDO::ERRMODE_EXCEPTION
));
The simplest solution would be (using 'upstream
' as the remote name referencing the original repo forked):
git remote add upstream /url/to/original/repo
git fetch upstream
git checkout master
git reset --hard upstream/master
git push origin master --force
(Similar to this GitHub page, section "What should I do if I’m in a bad situation?")
Be aware that you can lose changes done on the master
branch (both locally, because of the reset --hard
, and on the remote side, because of the push --force
).
An alternative would be, if you want to preserve your commits on master
, to replay those commits on top of the current upstream/master
.
Replace the reset part by a git rebase upstream/master
. You will then still need to force push.
See also "What should I do if I’m in a bad situation?"
A more complete solution, backing up your current work (just in case) is detailed in "Cleanup git master branch and move some commit to new branch".
See also "Pull new updates from original GitHub repository into forked GitHub repository" for illustrating what "upstream
" is.
Note: recent GitHub repos do protect the master
branch against push --force
.
So you will have to un-protect master
first (see picture below), and then re-protect it after force-pushing).
Note: on GitHub specifically, there is now (February 2019) a shortcut to delete forked repos for pull requests that have been merged upstream.
I suggest
l = re.compile("(?<!^)\s+(?=[A-Z])(?!.\s)").split(s)
Check this demo.
List indexes of -x mean the xth item from the end of the list, so n[-1]
means the last item in the list n
. Any good Python tutorial should have told you this.
It's an unusual convention that only a few other languages besides Python have adopted, but it is extraordinarily useful; in any other language you'll spend a lot of time writing n[n.length-1]
to access the last item of a list.
This is solution, which does not enables shell
using mv
.
from subprocess import Popen, PIPE, STDOUT
source = "path/to/current/file.foo",
destination = "path/to/new/destination/for/file.foo"
p = Popen(["mv", "-v", source, destination], stdout=PIPE, stderr=STDOUT)
output, _ = p.communicate()
output = output.strip().decode("utf-8")
if p.returncode:
print(f"E: {output}")
else:
print(output)
In case there are many people using your vagrant file - you might want to set name dynamically. Below is the example how to do it using username from your HOST machine as the name of the box and hostname:
require 'etc'
vagrant_name = "yourProjectName-" + Etc.getlogin
Vagrant.configure("2") do |config|
config.vm.box = "ubuntu/xenial64"
config.vm.hostname = vagrant_name
config.vm.provider "virtualbox" do |v|
v.name = vagrant_name
end
end
In Xcode > 4.3:
You click on the scheme drop down bar -> edit scheme -> arguments tab and then add NSZombieEnabled in the Environment Variables column and YES in the value column.
Good Luck !!!
For some reason, the best answer does not works for me.
I improved best answer by use
var overlayType_radio = document.querySelectorAll('input[type=radio][name="radio_overlaytype"]');
Original best answer use:
var rad = document.myForm.myRadios;
The others keep the same, finally it works for me.
var overlayType_radio = document.querySelectorAll('input[type=radio][name="radio_overlaytype"]');
console.log('overlayType_radio', overlayType_radio)
var prev = null;
for (var i = 0; i < overlayType_radio.length; i++) {
overlayType_radio[i].addEventListener('change', function() {
(prev) ? console.log('radio prev value',prev.value): null;
if (this !== prev) {
prev = this;
}
console.log('radio now value ', this.value)
});
}
html is:
<div id='overlay-div'>
<fieldset>
<legend> Overlay Type </legend>
<p>
<label>
<input class='with-gap' id='overlayType_image' value='overlayType_image' name='radio_overlaytype' type='radio' checked/>
<span>Image</span>
</label>
</p>
<p>
<label>
<input class='with-gap' id='overlayType_tiled_image' value='overlayType_tiled_image' name='radio_overlaytype' type='radio' disabled/>
<span> Tiled Image</span>
</p>
<p>
<label>
<input class='with-gap' id='overlayType_coordinated_tile' value='overlayType_coordinated_tile' name='radio_overlaytype' type='radio' disabled/>
<span> Coordinated Tile</span>
</p>
<p>
<label>
<input class='with-gap' id='overlayType_none' value='overlayType_none' name='radio_overlaytype' type='radio'/>
<span> None </span>
</p>
</fieldset>
</div>
var overlayType_radio = document.querySelectorAll('input[type=radio][name="radio_overlaytype"]');
console.log('overlayType_radio', overlayType_radio)
var prev = null;
for (var i = 0; i < overlayType_radio.length; i++) {
overlayType_radio[i].addEventListener('change', function() {
(prev) ? console.log('radio prev value',prev.value): null;
if (this !== prev) {
prev = this;
}
console.log('radio now value ', this.value)
});
}
_x000D_
<div id='overlay-div'>
<fieldset>
<legend> Overlay Type </legend>
<p>
<label>
<input class='with-gap' id='overlayType_image' value='overlayType_image' name='radio_overlaytype' type='radio' checked/>
<span>Image</span>
</label>
</p>
<p>
<label>
<input class='with-gap' id='overlayType_tiled_image' value='overlayType_tiled_image' name='radio_overlaytype' type='radio' />
<span> Tiled Image</span>
</p>
<p>
<label>
<input class='with-gap' id='overlayType_coordinated_tile' value='overlayType_coordinated_tile' name='radio_overlaytype' type='radio' />
<span> Coordinated Tile</span>
</p>
<p>
<label>
<input class='with-gap' id='overlayType_none' value='overlayType_none' name='radio_overlaytype' type='radio'/>
<span> None </span>
</p>
</fieldset>
</div>
_x000D_
For brevity, we can understand these two APIs like below:
X.class.isAssignableFrom(Y.class)
If X
and Y
are the same class, or X
is Y
's super class or super interface, return true, otherwise, false.
X.class.isInstance(y)
Say y
is an instance of class Y
, if X
and Y
are the same class, or X
is Y
's super class or super interface, return true, otherwise, false.
I'm using Visual Studio 2015 and finally ran across this post.
Yes in order to use
JavaScriptSerializer json = new JavaScriptSerializer();
You must right click on references and under Assemblies --> Framework choose
System.Web.Extensions
Then add in your reference
using System.Web.Script.Serialization;
For a number, it is tricky because if a numeric cell is empty
VBA will assign a default value of 0 to it, so it is hard for your VBA code to tell the difference between an entered zero and a blank numeric cell.
The following check worked for me to see if there was an actual 0 entered into the cell:
If CStr(rng.value) = "0" then
'your code here'
End If
psexec \\RemoteComputer cmd.exe
or use ssh or TeamViewer or RemoteDesktop!
Thank You All! I am able to to load Select List as per MVC now My Working Code is below:
HTML+MVC Code in View:-
<tr>
<th>@Html.Label("Country")</th>
<td>@Html.DropDownListFor(x =>x.Province,SelectListItemHelper.GetCountryList())<span class="required">*</span></td>
</tr>
<tr>
<th>@Html.LabelFor(x=>x.Province)</th>
<td>@Html.DropDownListFor(x =>x.Province,SelectListItemHelper.GetProvincesList())<span class="required">*</span></td>
</tr>
Created a Controller under "UTIL" folder: Code:-
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
namespace MedAvail.Applications.MedProvision.Web.Util
{
public class SelectListItemHelper
{
public static IEnumerable<SelectListItem> GetProvincesList()
{
IList<SelectListItem> items = new List<SelectListItem>
{
new SelectListItem{Text = "California", Value = "B"},
new SelectListItem{Text = "Alaska", Value = "B"},
new SelectListItem{Text = "Illinois", Value = "B"},
new SelectListItem{Text = "Texas", Value = "B"},
new SelectListItem{Text = "Washington", Value = "B"}
};
return items;
}
public static IEnumerable<SelectListItem> GetCountryList()
{
IList<SelectListItem> items = new List<SelectListItem>
{
new SelectListItem{Text = "United States", Value = "B"},
new SelectListItem{Text = "Canada", Value = "B"},
new SelectListItem{Text = "United Kingdom", Value = "B"},
new SelectListItem{Text = "Texas", Value = "B"},
new SelectListItem{Text = "Washington", Value = "B"}
};
return items;
}
}
}
And its working COOL now :-)
Thank you!!
here is my implementation in modern browser (without dependency):
transpose = m => m[0].map((x,i) => m.map(x => x[i]))
import java.util.Stack;
public class IterativePostOrderTraversal extends BinaryTree {
public static void iterativePostOrderTraversal(Node root){
Node cur = root;
Node pre = root;
Stack<Node> s = new Stack<Node>();
if(root!=null)
s.push(root);
System.out.println("sysout"+s.isEmpty());
while(!s.isEmpty()){
cur = s.peek();
if(cur==pre||cur==pre.left ||cur==pre.right){// we are traversing down the tree
if(cur.left!=null){
s.push(cur.left);
}
else if(cur.right!=null){
s.push(cur.right);
}
if(cur.left==null && cur.right==null){
System.out.println(s.pop().data);
}
}else if(pre==cur.left){// we are traversing up the tree from the left
if(cur.right!=null){
s.push(cur.right);
}else if(cur.right==null){
System.out.println(s.pop().data);
}
}else if(pre==cur.right){// we are traversing up the tree from the right
System.out.println(s.pop().data);
}
pre=cur;
}
}
public static void main(String args[]){
BinaryTree bt = new BinaryTree();
Node root = bt.generateTree();
iterativePostOrderTraversal(root);
}
}
Remove the FormsModule from Declaration:[] and Add the FormsModule in imports:[]
@NgModule({
declarations: [
AppComponent
],
imports: [
BrowserModule,
FormsModule
],
providers: [],
bootstrap: [AppComponent]
})
Updating setuptools has worked out fine for me.
sudo pip install --upgrade setuptools
Interesting problem. The solution I would try is the following.
Apply a low pass filter, such as convolution with a 2D gaussian mask. This will give you a bunch of (probably, but not necessarily floating point) values.
Perform a 2D non-maximal suppression using the known approximate radius of each paw pad (or toe).
This should give you the maximal positions without having multiple candidates which are close together. Just to clarify, the radius of the mask in step 1 should also be similar to the radius used in step 2. This radius could be selectable, or the vet could explicitly measure it beforehand (it will vary with age/breed/etc).
Some of the solutions suggested (mean shift, neural nets, and so on) probably will work to some degree, but are overly complicated and probably not ideal.
For a class diagram using Oracle database, use the following steps:
File ? Data Modeler ? Import ? Data Dictionary ? select DB connection ? Next ? select database->select tabels -> Finish
It is possible to have hierarchical branch names (branch names with slash). For example in my repository I have such branch(es). One caveat is that you can't have both branch 'foo' and branch 'foo/bar' in repository.
Your problem is not with creating branch with slash in name.
$ git branch foo/bar error: unable to resolve reference refs/heads/labs/feature: Not a directory fatal: Failed to lock ref for update: Not a directory
The above error message talks about 'labs/feature' branch, not 'foo/bar' (unless it is a mistake in copy'n'paste, i.e you edited parts of session). What is the result of git branch
or git rev-parse --symbolic-full-name HEAD
?
I was struggling with the same error message in SQL SERVER, since I had multiple joins, changing the order of the joins solved it for me.
C# implementation of recursive breadth-first search algorithm for a binary tree.
Binary tree data visualization
IDictionary<string, string[]> graph = new Dictionary<string, string[]> {
{"A", new [] {"B", "C"}},
{"B", new [] {"D", "E"}},
{"C", new [] {"F", "G"}},
{"E", new [] {"H"}}
};
void Main()
{
var pathFound = BreadthFirstSearch("A", "H", new string[0]);
Console.WriteLine(pathFound); // [A, B, E, H]
var pathNotFound = BreadthFirstSearch("A", "Z", new string[0]);
Console.WriteLine(pathNotFound); // []
}
IEnumerable<string> BreadthFirstSearch(string start, string end, IEnumerable<string> path)
{
if (start == end)
{
return path.Concat(new[] { end });
}
if (!graph.ContainsKey(start)) { return new string[0]; }
return graph[start].SelectMany(letter => BreadthFirstSearch(letter, end, path.Concat(new[] { start })));
}
If you want algorithm to work not only with binary-tree but with graphs what can have two and more nodes that points to same another node you must to avoid self-cycling by holding list of already visited nodes. Implementation may be looks like this.
IDictionary<string, string[]> graph = new Dictionary<string, string[]> {
{"A", new [] {"B", "C"}},
{"B", new [] {"D", "E"}},
{"C", new [] {"F", "G", "E"}},
{"E", new [] {"H"}}
};
void Main()
{
var pathFound = BreadthFirstSearch("A", "H", new string[0], new List<string>());
Console.WriteLine(pathFound); // [A, B, E, H]
var pathNotFound = BreadthFirstSearch("A", "Z", new string[0], new List<string>());
Console.WriteLine(pathNotFound); // []
}
IEnumerable<string> BreadthFirstSearch(string start, string end, IEnumerable<string> path, IList<string> visited)
{
if (start == end)
{
return path.Concat(new[] { end });
}
if (!graph.ContainsKey(start)) { return new string[0]; }
return graph[start].Aggregate(new string[0], (acc, letter) =>
{
if (visited.Contains(letter))
{
return acc;
}
visited.Add(letter);
var result = BreadthFirstSearch(letter, end, path.Concat(new[] { start }), visited);
return acc.Concat(result).ToArray();
});
}
What you want to do is not possible in a sane way. There was a similar question so look at the answers.
Then there's also an insane approach (site down - backup available here.) written by Jeffrey Knight:
Question: How do I create an application that can run in either GUI (windows) mode or command line / console mode?
On the surface of it, this would seem easy: you create a Console application, add a windows form to it, and you're off and running. However, there's a problem:
Problem: If you run in GUI mode, you end up with both a window and a pesky console lurking in the background, and you don't have any way to hide it.
What people seem to want is a true amphibian application that can run smoothly in either mode.
If you break it down, there are actually four use cases here:
User starts application from existing cmd window, and runs in GUI mode User double clicks to start application, and runs in GUI mode User starts application from existing cmd window, and runs in command mode User double clicks to start application, and runs in command mode.
I'm posting the code to do this, but with a caveat.
I actually think this sort of approach will run you into a lot more trouble down the road than it's worth. For example, you'll have to have two different UIs' -- one for the GUI and one for the command / shell. You're going to have to build some strange central logic engine that abstracts from GUI vs. command line, and it's just going to get weird. If it were me, I'd step back and think about how this will be used in practice, and whether this sort of mode-switching is worth the work. Thus, unless some special case called for it, I wouldn't use this code myself, because as soon as I run into situations where I need API calls to get something done, I tend to stop and ask myself "am I overcomplicating things?".
Output type=Windows Application
using System; using System.Collections.Generic; using System.Windows.Forms; using System.Runtime.InteropServices; using System.Diagnostics; using Microsoft.Win32; namespace WindowsApplication { static class Program { /* DEMO CODE ONLY: In general, this approach calls for re-thinking your architecture! There are 4 possible ways this can run: 1) User starts application from existing cmd window, and runs in GUI mode 2) User double clicks to start application, and runs in GUI mode 3) User starts applicaiton from existing cmd window, and runs in command mode 4) User double clicks to start application, and runs in command mode. To run in console mode, start a cmd shell and enter: c:\path\to\Debug\dir\WindowsApplication.exe console To run in gui mode, EITHER just double click the exe, OR start it from the cmd prompt with: c:\path\to\Debug\dir\WindowsApplication.exe (or pass the "gui" argument). To start in command mode from a double click, change the default below to "console". In practice, I'm not even sure how the console vs gui mode distinction would be made from a double click... string mode = args.Length > 0 ? args[0] : "console"; //default to console */ [DllImport("kernel32.dll", SetLastError = true)] static extern bool AllocConsole(); [DllImport("kernel32.dll", SetLastError = true)] static extern bool FreeConsole(); [DllImport("kernel32", SetLastError = true)] static extern bool AttachConsole(int dwProcessId); [DllImport("user32.dll")] static extern IntPtr GetForegroundWindow(); [DllImport("user32.dll", SetLastError = true)] static extern uint GetWindowThreadProcessId(IntPtr hWnd, out int lpdwProcessId); [STAThread] static void Main(string[] args) { //TODO: better handling of command args, (handle help (--help /?) etc.) string mode = args.Length > 0 ? args[0] : "gui"; //default to gui if (mode == "gui") { MessageBox.Show("Welcome to GUI mode"); Application.EnableVisualStyles(); Application.SetCompatibleTextRenderingDefault(false); Application.Run(new Form1()); } else if (mode == "console") { //Get a pointer to the forground window. The idea here is that //IF the user is starting our application from an existing console //shell, that shell will be the uppermost window. We'll get it //and attach to it IntPtr ptr = GetForegroundWindow(); int u; GetWindowThreadProcessId(ptr, out u); Process process = Process.GetProcessById(u); if (process.ProcessName == "cmd" ) //Is the uppermost window a cmd process? { AttachConsole(process.Id); //we have a console to attach to .. Console.WriteLine("hello. It looks like you started me from an existing console."); } else { //no console AND we're in console mode ... create a new console. AllocConsole(); Console.WriteLine(@"hello. It looks like you double clicked me to start AND you want console mode. Here's a new console."); Console.WriteLine("press any key to continue ..."); Console.ReadLine(); } FreeConsole(); } } } }
Set the buildToolsVersion '26.0.2'
then change classpath 'com.android.tools.build:gradle:3.0.1'
.
Make sure you set compileSdkVersion
to 26
whiles targetSdkVersion
is also set 26
.
It is also appropriate to sent set compile 'com.android.support:appcompat-v7:26.0.2'
.
Use the CSS pointer-events:none on fields you want to "disable" (possibly together with a greyed background) which allows the POST action, like:
<input type="text" class="disable">
.disable{
pointer-events:none;
background:grey;
}
Ref: https://developer.mozilla.org/en-US/docs/Web/CSS/pointer-events
Something is clearly corrupt in your Laravel setup and it is very hard to track without more info about your environment. Usually these 2 commands help you resolve such issues
php artisan clear-compiled
composer dump-autoload
If nothing else helps then I recommend you to install fresh Laravel 5 app and copy your application logic over, it should take around 15 min or so.
soluton for windows operating system only....... first step:
install nodejs version: nodev 8.1.2
second step: set up environment variable like: C:\ProgramFiles\nodejs
Third step: install angular use this command: npm install -g @angular/cli
after installation whereever you have to create project like: ng new first-project......
<div>
with some proportions
div {
position: relative;
width: 100%;
height: 100%;
}
<img>
's with their own proportions
img {
position: absolute;
top: 0;
left: 0;
bottom: 0;
right: 0;
width: auto; /* to keep proportions */
height: auto; /* to keep proportions */
max-width: 100%; /* not to stand out from div */
max-height: 100%; /* not to stand out from div */
margin: auto auto 0; /* position to bottom and center */
}
Chances are that you may be running your eclipse using Java 1.5.
Latest Plugin requires that the JRE be 1.6 or higher.
You will have to use Eclipse that runs on JRE 1.6
Edit: I had run into same problems. If it is not JRE problem then you can debug this. Follow below procedure:
There's filter_var()
as well and it's the native function which checks range. It doesn't give exactly what you want (never returns true), but with "cheat" we can change it.
I don't think it's a good code as for readability, but I show it's as a possibility:
return (filter_var($someNumber, FILTER_VALIDATE_INT, ['options' => ['min_range' => $min, 'max_range' => $max]]) !== false)
Just fill $someNumber
, $min
and $max
. filter_var
with that filter returns either boolean false when number is outside range or the number itself when it's within range. The expression (!== false
) makes function return true, when number is within range.
If you want to shorten it somehow, remember about type casting. If you would use !=
it would be false for number 0 within range -5; +5 (while it should be true). The same would happen if you would use type casting ((bool)
).
// EXAMPLE OF WRONG USE, GIVES WRONG RESULTS WITH "0"
(bool)filter_var($someNumber, FILTER_VALIDATE_INT, ['options' => ['min_range' => $min, 'max_range' => $max]])
if (filter_var($someNumber, FILTER_VALIDATE_INT, ['options' => ['min_range' => $min, 'max_range' => $max]])) ...
Imagine that (from other answer):
if(in_array($userScore, range(-5, 5))) echo 'your score is correct'; else echo 'incorrect, enter again';
If user would write empty value ($userScore = ''
) it would be correct, as in_array
is set here for default, non-strict more and that means that range creates 0
as well, and '' == 0
(non-strict), but '' !== 0
(if you would use strict mode). It's easy to miss such things and that's why I wrote a bit about that. I was learned that strict operators are default, and programmer could use non-strict only in special cases. I think it's a good lesson. Most examples here would fail in some cases because non-strict checking.
Still I like filter_var and you can use above (or below if I'd got so "upped" ;)) functions and make your own callback which you would use as FILTER_CALLBACK
filter. You could return bool or even add openRange
parameter. And other good point: you can use other functions, e.g. checking range of every number of array or POST/GET values. That's really powerful tool.
string stringToDecrypt = HttpContext.Current.Request.QueryString.ToString()
//change to string stringToDecrypt = HttpUtility.UrlDecode(HttpContext.Current.Request.QueryString.ToString())
My 2 cents: the same code works even if iOS:
#include <arpa/inet.h>
#include <sys/socket.h>
#include <netdb.h>
#include <ifaddrs.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#import "ViewController.h"
@interface ViewController ()
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
showIP();
}
void showIP()
{
struct ifaddrs *ifaddr, *ifa;
int family, s;
char host[NI_MAXHOST];
if (getifaddrs(&ifaddr) == -1)
{
perror("getifaddrs");
exit(EXIT_FAILURE);
}
for (ifa = ifaddr; ifa != NULL; ifa = ifa->ifa_next)
{
if (ifa->ifa_addr == NULL)
continue;
s=getnameinfo(ifa->ifa_addr,sizeof(struct sockaddr_in),host, NI_MAXHOST, NULL, 0, NI_NUMERICHOST);
if( /*(strcmp(ifa->ifa_name,"wlan0")==0)&&( */ ifa->ifa_addr->sa_family==AF_INET) // )
{
if (s != 0)
{
printf("getnameinfo() failed: %s\n", gai_strerror(s));
exit(EXIT_FAILURE);
}
printf("\tInterface : <%s>\n",ifa->ifa_name );
printf("\t Address : <%s>\n", host);
}
}
freeifaddrs(ifaddr);
}
@end
I simply removed the test against wlan0 to see data. ps You can remove "family"
select DATEADD(MONTH, DATEDIFF(MONTH, 0, GETDATE())-1, 0) --First day of previous month
select DATEADD(MONTH, DATEDIFF(MONTH, -1, GETDATE())-1, -1) --Last Day of previous month
Comparable
is Fegan
.The method compareTo
you are overidding in it should have a Fegan
object as a parameter whereas you are casting it to a FoodItems
. Your compareTo
implementation should describe how a Fegan
compare to another Fegan
.
FoodItems
implement Comparable
aswell and copy paste your actual compareTo
logic in it.Here is a very slight improvement to user1387483's answer using an immediate function:
(function() {
$("*").on( 'touchstart', function() {
$(this).trigger('hover') ;
} ).on('touchend', function() {
$(this).trigger('hover') ;
} ) ;
})() ;
Also, I agree with Boz that this appears to be the "neatest, most compliant solution".
It is not bad practice because something is 'wrong' about PrintStackTrace(), but because it's 'code smell'. Most of the time the PrintStackTrace() call is there because somebody failed to properly handle the exception. Once you deal with the exception in a proper way you generally don't care about the StackTrace any more.
Additionally, displaying the stacktrace on stderr is generally only useful when debugging, not in production because very often stderr goes nowhere. Logging it makes more sense. But just replacing PrintStackTrace() with logging the exception still leaves you with an application which failed but keeps running like nothing happened.
but as for this method, I don't understand the purpose of Integer.MAX_VALUE and Integer.MIN_VALUE.
By starting out with smallest
set to Integer.MAX_VALUE
and largest
set to Integer.MIN_VALUE
, they don't have to worry later about the special case where smallest
and largest
don't have a value yet. If the data I'm looking through has a 10
as the first value, then numbers[i]<smallest
will be true (because 10
is <
Integer.MAX_VALUE
) and we'll update smallest
to be 10
. Similarly, numbers[i]>largest
will be true
because 10
is >
Integer.MIN_VALUE
and we'll update largest
. And so on.
Of course, when doing this, you must ensure that you have at least one value in the data you're looking at. Otherwise, you end up with apocryphal numbers in smallest
and largest
.
Note the point Onome Sotu makes in the comments:
...if the first item in the array is larger than the rest, then the largest item will always be Integer.MIN_VALUE because of the else-if statement.
Which is true; here's a simpler example demonstrating the problem (live copy):
public class Example
{
public static void main(String[] args) throws Exception {
int[] values = {5, 1, 2};
int smallest = Integer.MAX_VALUE;
int largest = Integer.MIN_VALUE;
for (int value : values) {
if (value < smallest) {
smallest = value;
} else if (value > largest) {
largest = value;
}
}
System.out.println(smallest + ", " + largest); // 1, 2 -- WRONG
}
}
To fix it, either:
Don't use else
, or
Start with smallest
and largest
equal to the first element, and then loop the remaining elements, keeping the else if
.
Here's an example of that second one (live copy):
public class Example
{
public static void main(String[] args) throws Exception {
int[] values = {5, 1, 2};
int smallest = values[0];
int largest = values[0];
for (int n = 1; n < values.length; ++n) {
int value = values[n];
if (value < smallest) {
smallest = value;
} else if (value > largest) {
largest = value;
}
}
System.out.println(smallest + ", " + largest); // 1, 5
}
}
Firefox Developer Edition (59.0b6) has Scratchpad (Shift +F4) where you can run javascript
You can also search with -- option which basically ignores all the special characters and it won't be interpreted by grep.
$ cat foo |grep -- "0\.49"
For "Visual Studio Team Test" it appears you apply the ExpectedException attribute to the test's method.
Sample from the documentation here: A Unit Testing Walkthrough with Visual Studio Team Test
[TestMethod]
[ExpectedException(typeof(ArgumentException),
"A userId of null was inappropriately allowed.")]
public void NullUserIdInConstructor()
{
LogonInfo logonInfo = new LogonInfo(null, "P@ss0word");
}
Output size of sha1 is 160 bits. Which is 160/8 == 20 chars (if you use 8-bit chars) or 160/16 = 10 (if you use 16-bit chars).
Really, what you want to do cannot be done because the protocols do not allow for this. If static IPs were universally used then you might be able to do it. They are not, so you cannot.
If you really want to identify people, have them log in.
Since they will probably be moving around to different pages on your web site, you need a way to keep track of them as they move about.
So long as they are logged in, and you are tracking their session within your site via cookies/link-parameters/beacons/whatever, you can be pretty sure that they are using the same computer during that time.
Ultimately, it is incorrect to say this tells you which computer they are using if your users are not using your own local network and do not have static IP addresses.
If what you want to do is being done with the cooperation of the users and there is only one user per cookie and they use a single web browser, just use a cookie.
According to the man page of wget, there are a couple of options related to timeouts -- and there is a default read timeout of 900s -- so I say that, yes, it could timeout.
Here are the options in question :
-T seconds
--timeout=seconds
Set the network timeout to seconds seconds. This is equivalent to specifying
--dns-timeout
,--connect-timeout
, and--read-timeout
, all at the same time.
And for those three options :
--dns-timeout=seconds
Set the DNS lookup timeout to seconds seconds.
DNS lookups that don't complete within the specified time will fail.
By default, there is no timeout on DNS lookups, other than that implemented by system libraries.
--connect-timeout=seconds
Set the connect timeout to seconds seconds.
TCP connections that take longer to establish will be aborted.
By default, there is no connect timeout, other than that implemented by system libraries.
--read-timeout=seconds
Set the read (and write) timeout to seconds seconds.
The "time" of this timeout refers to idle time: if, at any point in the download, no data is received for more than the specified number of seconds, reading fails and the download is restarted.
This option does not directly affect the duration of the entire download.
I suppose using something like
wget -O - -q -t 1 --timeout=600 http://www.example.com/cron/run
should make sure there is no timeout before longer than the duration of your script.
(Yeah, that's probably the most brutal solution possible ^^ )
Try this:
console.dir(myObject,{depth:null})
Take a look at the Mergent Historical Securities Data API - http://www.mergent.com/servius
There's no reason to use setRawInputType()
, just use setInputType()
. However, you have to combine the class and flags with the OR operator:
edit.setInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_FLAG_DECIMAL | InputType.TYPE_NUMBER_FLAG_SIGNED);
Chr(10)
is the Line Feed character and Chr(13)
is the Carriage Return character.
You probably won't notice a difference if you use only one or the other, but you might find yourself in a situation where the output doesn't show properly with only one or the other. So it's safer to include both.
Historically, Line Feed would move down a line but not return to column 1:
This
is
a
test.
Similarly Carriage Return would return to column 1 but not move down a line:
This
is
a
test.
Paste this into a text editor and then choose to "show all characters", and you'll see both characters present at the end of each line. Better safe than sorry.
I find the most simple is
shell "explorer.exe URL"
This also works to open local folders.
Move DropDownList1.Items.Add(new ListItem("Select", "0", true)); After bindStatusDropDownList();
so:
if (!IsPostBack)
{
bindStatusDropDownList(); //first create structure
DropDownList1.Items.Add(new ListItem("Select", "0", true)); // after add item
}
val() returns the value of the <select>
element, i.e. the value
attribute of the selected <option>
element.
Since you actually want the inner text of the selected <option>
element, you should match that element and use text() instead:
var nationality = $("#dancerCountry option:selected").text();
Make sure you image is a relative path such as:
@Url.Content("~/Content/images/myimage.png")
MVC4
<img src="~/Content/images/myimage.png" />
You could convert the byte[]
into a Base64
string
on the fly.
string base64String = Convert.ToBase64String(imageBytes);
<img src="@String.Format("data:image/png;base64,{0}", base64string)" />
The tool you want is ps. To get information about what java programs are doing:
ps -F -C java
To get information about http:
ps -F -C httpd
If your program is ending before you get a chance to run these, open another terminal and run:
while true; do ps -F -C myCoolCode ; sleep 0.5s ; done
"use strict"
const today = new Date()
const year = today.getFullYear()
const month = `${today.getMonth() + 1}`.padStart(2, "0")
const day = `${today.getDate()}`.padStart(2, "0")
const stringDate = [day, month, year].join("/") // 13/12/2017
the String.prototype.padStart(targetLength[, padString])
adds as many as possible padString
in the String.prototype
target so that the new length of the target is targetLength
.
"use strict"
let month = "9"
month = month.padStart(2, "0") // "09"
let byte = "00000100"
byte = byte.padStart(8, "0") // "00000100"
In case it helps someone, if your variables have hyphens in them, you may see this error since hyphens are not allowed in variable names in Python and are used as subtraction operators.
Example:
my-variable = 5 # would result in 'SyntaxError: can't assign to operator'
I guess you can use @CollectionOfElements
(for hibernate/jpa 1) / @ElementCollection
(jpa 2) to map a collection of "entity properties" to a List
in entity
.
You can create the EntityProperty
type and annotate it with @Embeddable
You can use a checkbox
to simulate onClick with CSS:
input[type=checkbox]:checked + p {
display: none;
}
For retrieving files /folder from FTP via powerShell I wrote some functions, you can get even hidden stuff from FTP.
Example for getting all files which are not hidden in a specific folder:
Get-FtpChildItem -ftpFolderPath "ftp://myHost.com/root/leaf/" -userName "User" -password "pw" -hidden $false -File
Example for getting all folders(also hidden) in a specific folder:
Get-FtpChildItem -ftpFolderPath"ftp://myHost.com/root/leaf/" -userName "User" -password "pw" -Directory
You can just copy the functions from the following module without needing and 3rd library installing: https://github.com/AstralisSomnium/PowerShell-No-Library-Just-Functions/blob/master/FTPModule.ps1
Delete it with git tag -d <tagname>
and then recreate it on the correct commit.
I created JS performance test for it http://jsperf.com/split-and-join-vs-replace2
String strLong = Long.toString(longNumber);
Simple and works fine :-)
You should check your designer file. Open Form1.Designer.cs and
find this line: windows Form Designer Generated Code.
Expand this and you will see a lot of code. So check Whether this line is there inside datagridview1 controls if not place it.
this.dataGridView1.CellClick += new System.Windows.Forms.DataGridViewCellEventHandler(this.dataGridView1_CellClick);
I hope it helps.
You can use Siamese Network to see if the two images are similar or dissimilar following this tutorial. This tutorial cluster the similar images whereas you can use L2
distance to measure the similarity of two images.
If you have something else altering the DB (say another process) and need to ensure you see these changes, use AsNoTracking()
, otherwise EF may give you the last copy that your context had instead, hence it being good to usually use a new context every query:
http://codethug.com/2016/02/19/Entity-Framework-Cache-Busting/
If you have a lot of commits to rebase, and some part of them are giving conflicts, that really hurts. But I can suggest a less-known approach how to "squash all the conflicts".
First, checkout temp branch and start standard merge
git checkout -b temp
git merge origin/master
You will have to resolve conflicts, but only once and only real ones. Then stage all files and finish merge.
git commit -m "Merge branch 'origin/master' into 'temp'"
Then return to your branch (let it be alpha) and start rebase, but with automatical resolving any conflicts.
git checkout alpha
git rebase origin/master -X theirs
Branch has been rebased, but project is probably in invalid state. That's OK, we have one final step. We just need to restore project state, so it will be exact as on branch 'temp'. Technically we just need to copy its tree (folder state) via low-level command git commit-tree. Plus merging into current branch just created commit.
git merge --ff $(git commit-tree temp^{tree} -m "Fix after rebase" -p HEAD)
And delete temporary branch
git branch -D temp
That's all. We did a rebase via hidden merge.
Also I wrote a script, so that can be done in a dialog manner, you can find it here.
Deleting the .git
folder may cause problems in your git repository. If you want to delete all your commit history but keep the code in its current state, it is very safe to do it as in the following:
Checkout
git checkout --orphan latest_branch
Add all the files
git add -A
Commit the changes
git commit -am "commit message"
Delete the branch
git branch -D main
Rename the current branch to main
git branch -m main
Finally, force update your repository
git push -f origin main
PS: this will not keep your old commit history around
The LogManager
class determines which log4j config to use in a static block which runs when the class is loaded. There are three options intended for end-users:
log4j.defaultInitOverride
to false, it will not configure log4j at all.Specify the path to the configuration file manually yourself and override the classpath search. You can specify the location of the configuration file directly by using the following argument to java
:
-Dlog4j.configuration=<path to properties file>
in your test runner configuration.
Allow log4j to scan the classpath for a log4j config file during your test. (the default)
See also the online documentation.
We have found that adding the Apptentive cocoa pod to an existing Xcode project may potentially not include some of our required frameworks.
Check your linker flags:
Target > Build Settings > Other Linker Flags
You should see -lApptentiveConnect
listed as a linker flag:
... -ObjC -lApptentiveConnect ...
You should also see our required Frameworks listed:
UIKit
-ObjC -lApptentiveConnect -framework Accelerate -framework CoreData -framework CoreGraphics -framework CoreText -framework Foundation -framework QuartzCore -framework SystemConfiguration -framework UIKit -framework CoreTelephony -framework StoreKit
This is the function I use in my JS:
function toArray(nl) {
for(var a=[], l=nl.length; l--; a[l]=nl[l]);
return a;
}
You should use doGet()
when you want to intercept on HTTP GET requests. You should use doPost()
when you want to intercept on HTTP POST requests. That's all. Do not port the one to the other or vice versa (such as in Netbeans' unfortunate auto-generated processRequest()
method). This makes no utter sense.
Usually, HTTP GET requests are idempotent. I.e. you get exactly the same result everytime you execute the request (leaving authorization/authentication and the time-sensitive nature of the page —search results, last news, etc— outside consideration). We can talk about a bookmarkable request. Clicking a link, clicking a bookmark, entering raw URL in browser address bar, etcetera will all fire a HTTP GET request. If a Servlet is listening on the URL in question, then its doGet()
method will be called. It's usually used to preprocess a request. I.e. doing some business stuff before presenting the HTML output from a JSP, such as gathering data for display in a table.
@WebServlet("/products")
public class ProductsServlet extends HttpServlet {
@EJB
private ProductService productService;
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
List<Product> products = productService.list();
request.setAttribute("products", products); // Will be available as ${products} in JSP
request.getRequestDispatcher("/WEB-INF/products.jsp").forward(request, response);
}
}
Note that the JSP file is explicitly placed in /WEB-INF
folder in order to prevent endusers being able to access it directly without invoking the preprocessing servlet (and thus end up getting confused by seeing an empty table).
<table>
<c:forEach items="${products}" var="product">
<tr>
<td>${product.name}</td>
<td><a href="product?id=${product.id}">detail</a></td>
</tr>
</c:forEach>
</table>
Also view/edit detail links as shown in last column above are usually idempotent.
@WebServlet("/product")
public class ProductServlet extends HttpServlet {
@EJB
private ProductService productService;
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
Product product = productService.find(request.getParameter("id"));
request.setAttribute("product", product); // Will be available as ${product} in JSP
request.getRequestDispatcher("/WEB-INF/product.jsp").forward(request, response);
}
}
<dl>
<dt>ID</dt>
<dd>${product.id}</dd>
<dt>Name</dt>
<dd>${product.name}</dd>
<dt>Description</dt>
<dd>${product.description}</dd>
<dt>Price</dt>
<dd>${product.price}</dd>
<dt>Image</dt>
<dd><img src="productImage?id=${product.id}" /></dd>
</dl>
HTTP POST requests are not idempotent. If the enduser has submitted a POST form on an URL beforehand, which hasn't performed a redirect, then the URL is not necessarily bookmarkable. The submitted form data is not reflected in the URL. Copypasting the URL into a new browser window/tab may not necessarily yield exactly the same result as after the form submit. Such an URL is then not bookmarkable. If a Servlet is listening on the URL in question, then its doPost()
will be called. It's usually used to postprocess a request. I.e. gathering data from a submitted HTML form and doing some business stuff with it (conversion, validation, saving in DB, etcetera). Finally usually the result is presented as HTML from the forwarded JSP page.
<form action="login" method="post">
<input type="text" name="username">
<input type="password" name="password">
<input type="submit" value="login">
<span class="error">${error}</span>
</form>
...which can be used in combination with this piece of Servlet:
@WebServlet("/login")
public class LoginServlet extends HttpServlet {
@EJB
private UserService userService;
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String username = request.getParameter("username");
String password = request.getParameter("password");
User user = userService.find(username, password);
if (user != null) {
request.getSession().setAttribute("user", user);
response.sendRedirect("home");
}
else {
request.setAttribute("error", "Unknown user, please try again");
request.getRequestDispatcher("/login.jsp").forward(request, response);
}
}
}
You see, if the User
is found in DB (i.e. username and password are valid), then the User
will be put in session scope (i.e. "logged in") and the servlet will redirect to some main page (this example goes to http://example.com/contextname/home
), else it will set an error message and forward the request back to the same JSP page so that the message get displayed by ${error}
.
You can if necessary also "hide" the login.jsp
in /WEB-INF/login.jsp
so that the users can only access it by the servlet. This keeps the URL clean http://example.com/contextname/login
. All you need to do is to add a doGet()
to the servlet like this:
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
request.getRequestDispatcher("/WEB-INF/login.jsp").forward(request, response);
}
(and update the same line in doPost()
accordingly)
That said, I am not sure if it is just playing around and shooting in the dark, but the code which you posted doesn't look good (such as using compareTo()
instead of equals()
and digging in the parameternames instead of just using getParameter()
and the id
and password
seems to be declared as servlet instance variables — which is NOT threadsafe). So I would strongly recommend to learn a bit more about basic Java SE API using the Oracle tutorials (check the chapter "Trails Covering the Basics") and how to use JSP/Servlets the right way using those tutorials.
Update: as per the update of your question (which is pretty major, you should not remove parts of your original question, this would make the answers worthless .. rather add the information in a new block) , it turns out that you're unnecessarily setting form's encoding type to multipart/form-data
. This will send the request parameters in a different composition than the (default) application/x-www-form-urlencoded
which sends the request parameters as a query string (e.g. name1=value1&name2=value2&name3=value3
). You only need multipart/form-data
whenever you have a <input type="file">
element in the form to upload files which may be non-character data (binary data). This is not the case in your case, so just remove it and it will work as expected. If you ever need to upload files, then you'll have to set the encoding type so and parse the request body yourself. Usually you use the Apache Commons FileUpload there for, but if you're already on fresh new Servlet 3.0 API, then you can just use builtin facilities starting with HttpServletRequest#getPart()
. See also this answer for a concrete example: How to upload files to server using JSP/Servlet?
What I did was: created a new provisioning profile and used it. When setup the provisioning profile in the build setting tab, there were the wrong provisioning profile numbers (like "983ff..." as the error message mentioned, that's it!). Corrected to the new provisioning profile, then Xcode 7.2 refreshed itself, and build successfully.
cxf does great support for this kind of stuff e.g
<plugin>
<groupId>org.apache.cxf</groupId>
<artifactId>cxf-xjc-plugin</artifactId>
<version>2.3.0</version>
<configuration>
<extensions>
<extension>org.apache.cxf.xjcplugins:cxf-xjc-dv:2.3.0</extension>
</extensions>
</configuration>
<executions>
<execution>
<id>generate-sources-trans</id>
<phase>generate-sources</phase>
<goals>
<goal>xsdtojava</goal>
</goals>
<configuration>
<sourceRoot>${basedir}/src/main/java</sourceRoot>
<xsdOptions>
<xsdOption>
<xsd>src/main/resources/xxx.xsd</xsd>
</xsdOption>
</xsdOptions>
</configuration>
</execution>
</executions>
</plugin>
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
Here is a quick hack to demonstrate the techniques for what you want.
#include <stdio.h> /* printf */
#include <string.h> /* strcat */
#include <stdlib.h> /* strtol */
const char *byte_to_binary(int x)
{
static char b[9];
b[0] = '\0';
int z;
for (z = 128; z > 0; z >>= 1) {
strcat(b, ((x & z) == z) ? "1" : "0");
}
return b;
}
int main(void) {
{
/* binary string to int */
char *tmp;
char *b = "0101";
printf("%d\n", strtol(b, &tmp, 2));
}
{
/* byte to binary string */
printf("%s\n", byte_to_binary(5));
}
return 0;
}
If you are extending from an AppCompatActivity and are trying to get the ActionBar from the Fragment, you can do this:
ActionBar mActionBar = ((AppCompatActivity) getActivity()).getSupportActionBar();
Edit the .csproj or vbproj file. Find and replace these entries
<UseIIS>true</UseIIS> by <UseIIS>false</UseIIS>
<UseIISExpress>true</UseIISExpress> by <UseIISExpress>false</UseIISExpress>
So, After taking a while I figured out that the old push certificate generating service also exists.
You get two options:
Those who want to achieve the old style .p12 certificate can get it from second option. I have not used the first option yet as most of the third-party push notification service providers still need the .p12 format certificate.
From Business Intelligence Studio:
File->New Project->Integration Services Project
Now in solution explorer there is a SSIS Packages folder, right click it and select "Add Existing Package", and there will be a drop down that can be changed to File System, and the very bottom box allows you to browse to the file. Note that this will copy the file from where ever it is into the project's directory structure.
Using Retrofit 2.0 you may use this:
@Multipart
@POST("uploadImage")
Call<ResponseBody> uploadImage(@Part("file\"; fileName=\"myFile.png\" ")RequestBody requestBodyFile, @Part("image") RequestBody requestBodyJson);
Make a request:
File imgFile = new File("YOUR IMAGE FILE PATH");
RequestBody requestBodyFile = RequestBody.create(MediaType.parse("image/*"), imgFile);
RequestBody requestBodyJson = RequestBody.create(MediaType.parse("text/plain"),
retrofitClient.getJsonObject(uploadRequest));
//make sync call
Call<ResponseBody> uploadBundle = uploadImpl.uploadImage(requestBodyFile, requestBodyJson);
Response<BaseResponse> response = uploadBundle.execute();
please refer https://square.github.io/retrofit/
I just don't see the functional and seamless reason for nulls not to be comparable to other values or other nulls, cause we can clearly compare it and say they are the same or not in our context. It's funny. Just because of some logical conclusions and consistency we need to bother constantly with it. It's not functional, make it more functional and leave it to philosophers and scientists to conclude if it's consistent or not and does it hold "universal logic". :) Someone may say that it's because of indexes or something else, I doubt that those things couldn't be made to support nulls same as values. It's same as comparing two empty glasses, one is vine glass and other is beer glass, we are not comparing the types of objects but values they contain, same as you could compare int and varchar, with null it's even easier, it's nothing and what two nothingness have in common, they are the same, clearly comparable by me and by everyone else that write sql, because we are constantly breaking that logic by comparing them in weird ways because of some ANSI standards. Why not use computer power to do it for us and I doubt it would slow things down if everything related is constructed with that in mind. "It's not null it's nothing", it's not apple it's apfel, come on... Functionally is your friend and there is also logic here. In the end only thing that matter is functionality and does using nulls in that way brings more or less functionality and ease of use. Is it more useful?
Consider this code:
SELECT CASE WHEN NOT (1 = null or (1 is null and null is null)) THEN 1 ELSE 0 end
How many of you knows what will this code return? With or without NOT it returns 0. To me that is not functional and it's confusing. In c# it's all as it should be, comparison operations return value, logically this too produces value, because if it didn't there is nothing to compare (except. nothing :) ). They just "said": anything compared to null "returns" 0 and that creates many workarounds and headaches.
This is the code that brought me here:
where a != b OR (a is null and b IS not null) OR (a IS not null and b IS null)
I just need to compare if two fields (in where) have different values, I could use function, but...
https://github.com/xgqfrms-gildata/App001/issues/3
openssl.cnf
file in the right path;$ echo %OPENSSL_CONF%
$ set OPENSSL_CONF=C:\OpenSSL\bin\openssl.cnf
The easiest way to have a permanent and sustainable solution for the Docker Compose installation and the way to upgrade it, is to just use the package manager pip with:
pip install docker-compose
I was searching for a good solution for the ugly "how to upgrade to the latest version number"-problem, which appeared after you´ve read the official docs - and just found it occasionally - just have a look at the docker-compose pip package - it should reflect (mostly) the current number of the latest released Docker Compose version.
A package manager is always the best solution if it comes to managing software installations! So you just abstract from handling the versions on your own.
On Java 14 you can do this
List<String> strings = Arrays.asList("one", "two", "three");
var fs = require("fs");
var filename = "./index.html";
function start(resp) {
resp.writeHead(200, {
"Content-Type": "text/html"
});
fs.readFile(filename, "utf8", function(err, data) {
if (err) throw err;
resp.write(data);
resp.end();
});
}
A bit late but may also help to someone who looks for answers...
Between rows/row_number example - recursive query that may be used in any SQL:
WITH data(row_num, some_val) AS
(
SELECT 1 row_num, 1 some_val FROM any_table --dual in Oracle
UNION ALL
SELECT row_num+1, some_val+row_num FROM data WHERE row_num < 20 -- any number
)
SELECT * FROM data
WHERE row_num BETWEEN 5 AND 10
/
ROW_NUM SOME_VAL
-------------------
5 11
6 16
7 22
8 29
9 37
10 46
PDOStatement->execute()
returns true on success. There is also PDOStatement->errorCode()
which you can check for errors.
The following will keep looking for someVariable until it is found. It checks every 0.25 seconds.
function waitForElement(){
if(typeof someVariable !== "undefined"){
//variable exists, do what you want
}
else{
setTimeout(waitForElement, 250);
}
}
For Swagger API 3.0, generating Html2 client code from online Swagger Editor works great for me!
Replace your query with the following:
$query = mysql_query("INSERT INTO users VALUES('$username','$pass','$email')", `$Connect`);
File file = context.getFilesDir();
file.mkdir();
String[] array = filePath.split("/");
for(int t = 0; t < array.length - 1; t++) {
file = new File(file, array[t]);
file.mkdir();
}
File f = new File(file,array[array.length- 1]);
RandomAccessFileOutputStream rvalue =
new RandomAccessFileOutputStream(f, append);
Hopefully working code (didn't do much testing):
function toFixed(value, precision) {
var precision = precision || 0,
neg = value < 0,
power = Math.pow(10, precision),
value = Math.round(value * power),
integral = String((neg ? Math.ceil : Math.floor)(value / power)),
fraction = String((neg ? -value : value) % power),
padding = new Array(Math.max(precision - fraction.length, 0) + 1).join('0');
return precision ? integral + '.' + padding + fraction : integral;
}
Using Perl:
perl -ne 'print if /\S/'
\S
means match non-blank characters.
This worked for me
$(".chzn-select").chosen({
disable_search_threshold: 10
}).change(function(event){
if(event.target == this){
alert($(this).val());
}
});
I solved my problem in AngularJS as follows:
var configPopOver = {
animation: 500,
container: 'body',
placement: function (context, source) {
var elBounding = source.getBoundingClientRect();
var pageWidth = angular.element('body')[0].clientWidth
var pageHeith = angular.element('body')[0].clientHeith
if (elBounding.left > (pageWidth*0.34) && elBounding.width < (pageWidth*0.67)) {
return "left";
}
if (elBounding.left < (pageWidth*0.34) && elBounding.width < (pageWidth*0.67)) {
return "right";
}
if (elBounding.top < 110){
return "bottom";
}
return "top";
},
html: true
};
This function do the position of Bootstrap popover float to the best position, based on element position.
I think your problem is that the :after psuedo-element requires the content: property set inside it. You need to tell it to insert something. You could even just have it insert the image directly:
ul li:after {
content: url('../images/small_triangle.png');
}
Oracle's JVM implementation for Java 8 got rid of the PermGen model and replaced it with Metaspace.
I think the question is a little bit fuzzy - for example, it can be interpreted as a question about best practices in programming loops with if
inside. So, I'll try to answer this question with this particular interpretation.
If you have if
inside a loop, then in most cases you'd like to know how the loop has ended - was it "broken" by the if
or was it ended "naturally"? So, your sample code can be modified in this way:
bool intMaxFound = false;
for (size = 0; size < HAY_MAX; size++)
{
// wait for hay until EOF
printf("\nhaystack[%d] = ", size);
int straw = GetInt();
if (straw == INT_MAX)
{intMaxFound = true; break;}
// add hay to stack
haystack[size] = straw;
}
if (intMaxFound)
{
// ... broken
}
else
{
// ... ended naturally
}
The problem with this code is that the if
statement is buried inside the loop body, and it takes some effort to locate it and understand what it does. A more clear (even without the break
statement) variant will be:
bool intMaxFound = false;
for (size = 0; size < HAY_MAX && !intMaxFound; size++)
{
// wait for hay until EOF
printf("\nhaystack[%d] = ", size);
int straw = GetInt();
if (straw == INT_MAX)
{intMaxFound = true; continue;}
// add hay to stack
haystack[size] = straw;
}
if (intMaxFound)
{
// ... broken
}
else
{
// ... ended naturally
}
In this case you can clearly see (just looking at the loop "header") that this loop can end prematurely. If the loop body is a multi-page text, written by somebody else, then you'd thank its author for saving your time.
UPDATE:
Thanks to SO - it has just suggested the already answered question about crash of the AT&T phone network in 1990. It's about a risky decision of C creators to use a single reserved word break
to exit from both loops and switch
.
Anyway this interpretation doesn't follow from the sample code in the original question, so I'm leaving my answer as it is.
Use:
#include <windows.h>
Sleep(sometime_in_millisecs); // Note uppercase S
And here's a small example that compiles with MinGW and does what it says on the tin:
#include <windows.h>
#include <stdio.h>
int main() {
printf( "starting to sleep...\n" );
Sleep(3000); // Sleep three seconds
printf("sleep ended\n");
}
The dplyr
package contains summarise_all
for this aim:
library(dplyr)
# summarise_all was replaced with the summarise(acrosss(..)) syntax dplyr >=1.00
df %>% group_by(grp) %>% summarise(across(everything(), list(mean)))
#> # A tibble: 3 x 5
#> grp a b c d
#> <int> <dbl> <dbl> <dbl> <dbl>
#> 1 1 3.08 2.98 2.98 2.91
#> 2 2 3.03 3.04 2.97 2.87
#> 3 3 2.85 2.95 2.95 3.06
Alternatively, the purrrlyr
package provides the same functionality:
library(purrrlyr)
df %>% slice_rows("grp") %>% dmap(mean)
#> # A tibble: 3 x 5
#> grp a b c d
#> <int> <dbl> <dbl> <dbl> <dbl>
#> 1 1 3.08 2.98 2.98 2.91
#> 2 2 3.03 3.04 2.97 2.87
#> 3 3 2.85 2.95 2.95 3.06
Also don't forget about data.table
(use keyby
to sort sort groups):
library(data.table)
setDT(df)[, lapply(.SD, mean), keyby = grp]
#> grp a b c d
#> 1: 1 3.079412 2.979412 2.979412 2.914706
#> 2: 2 3.029126 3.038835 2.967638 2.873786
#> 3: 3 2.854701 2.948718 2.951567 3.062678
Let's try to compare performance.
library(dplyr)
library(purrrlyr)
library(data.table)
library(bench)
set.seed(123)
n <- 10000
df <- data.frame(
a = sample(1:5, n, replace = TRUE),
b = sample(1:5, n, replace = TRUE),
c = sample(1:5, n, replace = TRUE),
d = sample(1:5, n, replace = TRUE),
grp = sample(1:3, n, replace = TRUE)
)
dt <- setDT(df)
mark(
dplyr = df %>% group_by(grp) %>% summarise(across(everything(), list(mean))),
purrrlyr = df %>% slice_rows("grp") %>% dmap(mean),
data.table = dt[, lapply(.SD, mean), keyby = grp],
check = FALSE
)
#> # A tibble: 3 x 6
#> expression min median `itr/sec` mem_alloc `gc/sec`
#> <bch:expr> <bch:tm> <bch:tm> <dbl> <bch:byt> <dbl>
#> 1 dplyr 2.81ms 2.85ms 328. NA 17.3
#> 2 purrrlyr 7.96ms 8.04ms 123. NA 24.5
#> 3 data.table 596.33µs 707.91µs 1409. NA 10.3
all: program
program.o: program.h headers.h
is enough. the rest is implicit
You can use postman.
Where select Post as method. and In Request Body send JSON Object.
There are overloads of ActionLink which take a fragment parameter. Passing "section12" as your fragment will get you the behavior you're after.
For example, calling LinkExtensions.ActionLink Method (HtmlHelper, String, String, String, String, String, String, Object, Object):
<%= Html.ActionLink("Link Text", "Action", "Controller", null, null, "section12-the-anchor", new { categoryid = "blah"}, null) %>
Here's another example I wrote a while ago:
<?php
// Get class for Instagram
// More examples here: https://github.com/cosenary/Instagram-PHP-API
require_once 'instagram.class.php';
// Initialize class with client_id
// Register at http://instagram.com/developer/ and replace client_id with your own
$instagram = new Instagram('CLIENT_ID_HERE');
// Set keyword for #hashtag
$tag = 'KEYWORD HERE';
// Get latest photos according to #hashtag keyword
$media = $instagram->getTagMedia($tag);
// Set number of photos to show
$limit = 5;
// Set height and width for photos
$size = '100';
// Show results
// Using for loop will cause error if there are less photos than the limit
foreach(array_slice($media->data, 0, $limit) as $data)
{
// Show photo
echo '<p><img src="'.$data->images->thumbnail->url.'" height="'.$size.'" width="'.$size.'" alt="SOME TEXT HERE"></p>';
}
?>
For that, you can do it in 2 ways: XML or Java. See here: How to change the text on the action bar
So:
XML:
<activity android:name=".Hello_World"
android:label="This is the Hello World Application">
</activity>
Java:
public class TitleBar extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
final boolean customTitleSupported = requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);
setContentView(R.layout.main);
if ( customTitleSupported ) {
getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.titlebar);
}
final TextView myTitleText = (TextView) findViewById(R.id.myTitle);
if ( myTitleText != null ) {
myTitleText.setText("NEW TITLE");
// user can also set color using "Color" and then "Color value constant"
// myTitleText.setBackgroundColor(Color.GREEN);
}
}
}
I'm arriving a bit late to the party, but I've got three four five:
If you poll InvokeRequired on a control that hasn't been loaded/shown, it will say false - and blow up in your face if you try to change it from another thread (the solution is to reference this.Handle in the creator of the control).
Another one which tripped me up is that given an assembly with:
enum MyEnum
{
Red,
Blue,
}
if you calculate MyEnum.Red.ToString() in another assembly, and in between times someone has recompiled your enum to:
enum MyEnum
{
Black,
Red,
Blue,
}
at runtime, you will get "Black".
I had a shared assembly with some handy constants in. My predecessor had left a load of ugly-looking get-only properties, I thought I'd get rid of the clutter and just use public const. I was more than a little surprised when VS compiled them to their values, and not references.
If you implement a new method of an interface from another assembly, but you rebuild referencing the old version of that assembly, you get a TypeLoadException (no implementation of 'NewMethod'), even though you have implemented it (see here).
Dictionary<,>: "The order in which the items are returned is undefined". This is horrible, because it can bite you sometimes, but work others, and if you've just blindly assumed that Dictionary is going to play nice ("why shouldn't it? I thought, List does"), you really have to have your nose in it before you finally start to question your assumption.
To be able to disable/enable selects first of all your selects need an ID or class. Then you could do something like this:
Disable:
$('#id').attr('disabled', 'disabled');
Enable:
$('#id').removeAttr('disabled');
Here's an article in devx.com that says:
Creating a non-clustered index that contains all the columns used in a SQL query, a technique called index covering
I can only suppose that a covered query is a query that has an index that covers all the columns in its returned recordset. One caveat - the index and query would have to be built as to allow the SQL server to actually infer from the query that the index is useful.
For example, a join of a table on itself might not benefit from such an index (depending on the intelligence of the SQL query execution planner):
PersonID ParentID Name
1 NULL Abe
2 NULL Bob
3 1 Carl
4 2 Dave
Let's assume there's an index on PersonID,ParentID,Name
- this would be a covering index for a query like:
SELECT PersonID, ParentID, Name FROM MyTable
But a query like this:
SELECT PersonID, Name FROM MyTable LEFT JOIN MyTable T ON T.PersonID=MyTable.ParentID
Probably wouldn't benifit so much, even though all of the columns are in the index. Why? Because you're not really telling it that you want to use the triple index of PersonID,ParentID,Name
.
Instead, you're building a condition based on two columns - PersonID
and ParentID
(which leaves out Name
) and then you're asking for all the records, with the columns PersonID, Name
. Actually, depending on implementation, the index might help the latter part. But for the first part, you're better off having other indexes.
You can also use synchronized
keyword for addFinisher
method like this
//Implement the one method in the RaceListener interface
public synchronized void addFinisher(RaceCar finisher) {
finishingOrder.add(finisher);
}
So you can use ArrayList add method thread-safe with this way.
Sometimes it's asking the question that makes the answer jump out. The methods and extra arguments are listed on the ggplot2 wiki stat_smooth page.
Which is alluded to on the geom_smooth()
page with:
"See stat_smooth for examples of using built in model fitting if you need some more flexible, this example shows you how to plot the fits from any model of your choosing".
It's not the first time I've seen arguments in examples for ggplot graphs that aren't specifically in the function. It does make it tough to work out the scope of each function, or maybe I am yet to stumble upon a magic explicit list that says what will and will not work within each function.
If you want to initialize an object based on an interface you can initialize it empty with following statement.
myObj: IMyObject = {} as IMyObject;
ApacheHttp Client is removed in v23 sdk. You can use HttpURLConnection or third party Http Client like OkHttp.
ref : https://developer.android.com/preview/behavior-changes.html#behavior-apache-http-client
Try to save the file before, then it will indent.
Like this.
.divContainer input[type="text"] {
width:150px;
}
.divContainer input[type="radio"] {
width:20px;
}
In any .NET langauge, Environment.NewLine
would be preferable.
If you are in an interactive environment like Jupyter
or ipython
you might be interested in clearing unwanted var's if they are getting heavy.
The magic-commands reset
and reset_selective
is vailable on interactive python sessions like ipython
and Jupyter
1) reset
reset
Resets the namespace by removing all names defined by the user, if called without arguments.
in
and the out
parameters specify whether you want to flush the in/out caches. The directory history is flushed with the dhist
parameter.
reset in out
Another interesting one is array
that only removes numpy Arrays:
reset array
2) reset_selective
Resets the namespace by removing names defined by the user. Input/Output history are left around in case you need them.
Clean Array Example:
In [1]: import numpy as np
In [2]: littleArray = np.array([1,2,3,4,5])
In [3]: who_ls
Out[3]: ['littleArray', 'np']
In [4]: reset_selective -f littleArray
In [5]: who_ls
Out[5]: ['np']
Source: http://ipython.readthedocs.io/en/stable/interactive/magics.html
I was able to get a git 1.7.1 to work after quite some time.
First, I had to do disable SSL just so I could pull:
git config --global http.sslverify false
Then I could clone
git clone https://github.com/USERNAME/PROJECTNAME.git
Then after adding and committing i was UNABLE to push back. So i did
git remote -v
origin https://github.com/USERNAME/PROJECTNAME.git (fetch)
origin https://github.com/USERNAME/PROJECTNAME.git (push)
to see the pull and push adresses:
These must be modified with USERNAME@
git remote set-url origin https://[email protected]/USERNAME/PROJECTNAME.git
It will still prompt you for a password, which you could add with
USERNAME:PASSWORD@github.....
But dont do that, as you save your password in cleartext for easy theft.
I had to do this combination since I could not get SSH to work due to firewall limitations.
float b = (float)Math.ceil(a);
or
float b = (float)Math.round(a);
Depending on whether you meant "round to the nearest whole number" (round) or "round up" (ceil).
Beware of loss of precision in converting a double to a float, but that shouldn't be an issue here.
I've heard Joseph's Myers implementation is quite fast. Additionally, he has a lengthy article on Javascript optimization describing what he learned while writing his implementation. It's a good read for anyone interested in performant javascript.
http://www.webreference.com/programming/javascript/jkm3/
His MD5 implementation can be found here
A complementary note about CREATE TABLE .. TYPE=""
syntax in SQL dump files
TLDR: If you still get CREATE TABLE ... TYPE="..."
statements in SQL dump files generated by third party tools, it most certainly indicates that your server is configured to use a default sqlmode
of MYSQL40
or MYSQL323
.
Long story
As it was said by others, the TYPE
argument to CREATE TABLE
has been deprecated for a long time in MySQL. mysqldump
correctly uses the ENGINE
argument, unless you specifically ask it to generate a backward compatible dump (for example using --compatible=mysql40
in versions of mysqldump
up to 5.7).
However, many external SQL dump tools (for example, those integrated in MySQL clients such as phpmyadmin, Navicat and DBVisualizer, as well as those used by external automated backup services such as iControlWP) are not specifically aware of this change, and instead rely on the SHOW CREATE TABLE ...
command to provide table creation statements for each tables (and just to it make it clear: this is actually a good thing). However, the SHOW CREATE TABLE
will actually produce outdated syntax, including the TYPE
argument, if the sqlmode
variable is set to MYSQL40
or MYSQL323
.
Therefore, if you still get CREATE TABLE ... TYPE="..."
statements in SQL dump files generated by third party tools, it most certainly indicates that your server is configured to use a default sqlmode
of MYSQL40
or MYSQL323
.
These sqlmode
s basically configure MySQL to retain some backward compatible behaviours, and using them by default was largely recommended a few years ago. It is however highly improbable that you still have any code that wouldn't work correctly without these modes. Anyway, MYSQL40
, MYSQL323
and several other similar sqlmode
s have themselves been deprecated and are not supported in MySQL 8.0 and higher.
If your server is still configured with these sqlmode
s and you are worried that some legacy program might fail if you change these, then one possibility is to set the sqlmode
locally for that program, by executing SET SESSION sql_mode = 'MYSQL40';
immediately after connection. Note that this should only be considered as a temporary patch, and will not work in MySQL 8.0 and higher.
A more future-proof solution that do not involve rewriting your SQL queries would be to determine exactly which compatibility features need to be enable, and to enable only those, on a per-program basis (as described previously). The default sqlmode
(that is, in server's configuration) should ideally be left unset (which will use official MySQL defaults for your current version). The full list of sqlmode
(as of MySQL 5.7) is described here: https://dev.mysql.com/doc/refman/5.7/en/sql-mode.html.
You need to reference both Microsoft.ReportViewer.WebForms and Microsoft.ReportViewer.Common and set the CopyLocal property to true. This will result in the dll's being copied to our bin directory (both are necessary).
If you are using bootstrap.min.css for carousel-
<a class="left carousel-control" href="#carouselExample" data-slide="prev">
<span class="glyphicon glyphicon-chevron-left"></span>
<span class="sr-only">Previous</span>
</a>
<a class="right carousel-control" href="#carouselExample" data-slide="next">
<span class="glyphicon glyphicon-chevron-right"></span>
<span class="sr-only">Next</span>
</a>
Open the bootstrap.min.css file and find the property "glyphicon-chevron-right" and add the property "color:red"
It means it's an array of wide characters (wchar_t
) instead of narrow characters (char
).
It's a just a string of a different kind of character, not necessarily a Unicode string.
Have you tried using the "auto-fill" in Excel?
If you have an entire column of items you put the formula in the first cell, make sure you get the result you desire and then you can do the copy/paste, or use auto fill which is an option that sits on the bottom right corner of the cell.
You go to that corner in the cell and once your cursor changes to a "+", you can double-click on it and it should populate all the way down to the last entry (as long as there are no populated cells, that is).
Not a php pro. but i recently ran into this wall too and this is what i came up with.
function tag_contents($string, $tag_open, $tag_close){
foreach (explode($tag_open, $string) as $key => $value) {
if(strpos($value, $tag_close) !== FALSE){
$result[] = substr($value, 0, strpos($value, $tag_close));;
}
}
return $result;
}
$string = "i love cute animals, like [animal]cat[/animal],
[animal]dog[/animal] and [animal]panda[/animal]!!!";
echo "<pre>";
print_r(tag_contents($string , "[animal]" , "[/animal]"));
echo "</pre>";
//result
Array
(
[0] => cat
[1] => dog
[2] => panda
)
The best way to understand is to simply think from top to bottom ( Large Desktops to Mobile Phones)
Firstly, as B3 is mobile first so if you use xs then the columns will be same from Large desktops to xs ( i recommend using xs or sm as this will keep everything the way you want on every screen size )
Secondly if you want to give different width to columns on different devices or resolutions, than you can add multiple classes e.g
the above will change the width according to the screen resolutions, REMEMBER i am keeping the total columns in each class = 12
I hope my answer would help!
//the parsed time zone offset:
DateTimeFormatter dateFormat = DateTimeFormat.forPattern("yyyy-MM-dd'T'HH:mm:ss.SSSZ");
String fromDateTimeObj = "2011-01-03T12:00:00.000-0800";
DateTime fromDatetime = dateFormat.withOffsetParsed().parseDateTime(fromDateTimeObj);
If you have issues deleting the topics, try to delete the topic using:
$KAFKA_HOME/bin/kafka-topics.sh --delete --zookeeper localhost:2181 --topic your_topic_name
command. Then in order to verify the deletion process, go to the kafka logs directory which normally is placed under /tmp/kafka-logs/
, then delete the your_topic_name
file via rm -rf your_topic_name
command.
Remember to monitor the whole process via a kafka management tool like Kafka Tool
.
The mentioned process above will remove the topics without kafka server restart.
Here is code for image encoding and image decoding.
In an XML file
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="yyuyuyuuyuyuyu"
android:id="@+id/tv5"
/>
In a Java file:
TextView textView5;
Bitmap bitmap;
textView5 = (TextView) findViewById(R.id.tv5);
bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.logo);
new AsyncTask<Void, Void, String>() {
@Override
protected String doInBackground(Void... voids) {
ByteArrayOutputStream stream = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, 70, stream);
byte[] byteFormat = stream.toByteArray();
// Get the Base64 string
String imgString = Base64.encodeToString(byteFormat, Base64.NO_WRAP);
return imgString;
}
@Override
protected void onPostExecute(String s) {
textView5.setText(s);
}
}.execute();
For me, fny answers really got it all. since fetch is not throwing error, we need to throw/handle the error ourselves. Posting my solution with async/await. I think it's more strait forward and readable
Solution 1: Not throwing an error, handle the error ourselves
async _fetch(request) {
const fetchResult = await fetch(request); //Making the req
const result = await fetchResult.json(); // parsing the response
if (fetchResult.ok) {
return result; // return success object
}
const responseError = {
type: 'Error',
message: result.message || 'Something went wrong',
data: result.data || '',
code: result.code || '',
};
const error = new Error();
error.info = responseError;
return (error);
}
Here if we getting an error, we are building an error object, plain JS object and returning it, the con is that we need to handle it outside. How to use:
const userSaved = await apiCall(data); // calling fetch
if (userSaved instanceof Error) {
debug.log('Failed saving user', userSaved); // handle error
return;
}
debug.log('Success saving user', userSaved); // handle success
Solution 2: Throwing an error, using try/catch
async _fetch(request) {
const fetchResult = await fetch(request);
const result = await fetchResult.json();
if (fetchResult.ok) {
return result;
}
const responseError = {
type: 'Error',
message: result.message || 'Something went wrong',
data: result.data || '',
code: result.code || '',
};
let error = new Error();
error = { ...error, ...responseError };
throw (error);
}
Here we are throwing and error that we created, since Error ctor approve only string, Im creating the plain Error js object, and the use will be:
try {
const userSaved = await apiCall(data); // calling fetch
debug.log('Success saving user', userSaved); // handle success
} catch (e) {
debug.log('Failed saving user', userSaved); // handle error
}
Solution 3: Using customer error
async _fetch(request) {
const fetchResult = await fetch(request);
const result = await fetchResult.json();
if (fetchResult.ok) {
return result;
}
throw new ClassError(result.message, result.data, result.code);
}
And:
class ClassError extends Error {
constructor(message = 'Something went wrong', data = '', code = '') {
super();
this.message = message;
this.data = data;
this.code = code;
}
}
Hope it helped.
For people who are still struggling with this error, it can also happen if you accidentally create a duplicate column with the same name. Remove duplicate columns like so:
df = df.loc[:,~df.columns.duplicated()]
Use the onchange event in HTML/standard JavaScript.
In jQuery that is the change() event. For example:
$('element').change(function() { // do something } );
EDIT
After reading some comments, what about:
$(function() {
var content = $('#myContent').val();
$('#myContent').keyup(function() {
if ($('#myContent').val() != content) {
content = $('#myContent').val();
alert('Content has been changed');
}
});
});
Some addition to the previous answers. It is nice to regulate the density of the polygon to avoid obscuring the data points.
library(MASS)
attach(Boston)
lm.fit2 = lm(medv~poly(lstat,2))
plot(lstat,medv)
new.lstat = seq(min(lstat), max(lstat), length.out=100)
preds <- predict(lm.fit2, newdata = data.frame(lstat=new.lstat), interval = 'prediction')
lines(sort(lstat), fitted(lm.fit2)[order(lstat)], col='red', lwd=3)
polygon(c(rev(new.lstat), new.lstat), c(rev(preds[ ,3]), preds[ ,2]), density=10, col = 'blue', border = NA)
lines(new.lstat, preds[ ,3], lty = 'dashed', col = 'red')
lines(new.lstat, preds[ ,2], lty = 'dashed', col = 'red')
Please note that you see the prediction interval on the picture, which is several times wider than the confidence interval. You can read here the detailed explanation of those two types of interval estimates.
The most common idiom for creating an array without using the inefficient +=
is something like this, from the output of a loop:
$array = foreach($i in 1..10) {
$i
}
$array
Try this
Installing with Anaconda
conda create --name tensorflow python=3.5
activate tensorflow
conda install jupyter
conda install scipy
pip install tensorflow
or
pip install tensorflow-gpu
It is important to add python=3.5 at the end of the first line, because it will install Python 3.5.
You can use Expressions windows: while debugging, menu window -> Show View -> Expressions, then it has place to type variables of which you need to see contents
Oh! just read comments in question, dear I missed it. but just letting the answer be here in case it can be useful to some other person
I tried "Ctrl+C" and "Ctrl+ Break" none worked. I was using SQL Plus that came with Oracle Client 10.2.0.1.0. SQL Plus is used by most as client for connecting with Oracle DB. I used the Cancel, option under File menu and it stopped the execution!
Once you click File wait for few mins then the select command halts and menu appears click on Cancel.
Both .ics and .vcs files are in ASCII. If you use "Save As" option to save a calendar entry (Appt, Meeting Request/Response/Postpone/Cancel and etc) in both .ics and .vcs format and use vimdiff, you can easily see the difference.
Both .vcs (vCal) and .ics (iCal) belongs to the same VCALENDAR camp, but .vcs file shows "VERSION:1.0" whereas .ics file uses "VERSION:2.0".
The spec for vCalendar v1.0 can be found at http://www.imc.org/pdi/pdiproddev.html. The spec for iCalendar (vCalendar v2.0) is in RFC5545. In general, the newer is better, and that is true for Outlook 2007 and onward, but not for Outlook 2003.
For Outlook 2003, the behavior is peculiar. It can save the same calendar entry in both .ics and .vcs format, but it only read & display .vcs file correctly. It can read .ics file but it omits some fields and does not display it in calendar mode. My guess is that back then Microsoft wanted to provide .ics to be compatible with Mac's iCal but not quite committed to v2.0 yet.
So I would say for Outlook 2003, .vcs is the native format.
if else condition can be covered with ternary operator
@item.rigged? ? 'Yes' : 'No'
The below expression should work correctly to find any number of consecutive words. The matching can be case insensitive.
String regex = "\\b(\\w+)(\\s+\\1\\b)*";
Pattern p = Pattern.compile(regex, Pattern.CASE_INSENSITIVE);
Matcher m = p.matcher(input);
// Check for subsequences of input that match the compiled pattern
while (m.find()) {
input = input.replaceAll(m.group(0), m.group(1));
}
Sample Input : Goodbye goodbye GooDbYe
Sample Output : Goodbye
Explanation:
The regex expression:
\b : Start of a word boundary
\w+ : Any number of word characters
(\s+\1\b)* : Any number of space followed by word which matches the previous word and ends the word boundary. Whole thing wrapped in * helps to find more than one repetitions.
Grouping :
m.group(0) : Shall contain the matched group in above case Goodbye goodbye GooDbYe
m.group(1) : Shall contain the first word of the matched pattern in above case Goodbye
Replace method shall replace all consecutive matched words with the first instance of the word.
The simplest way is to make String
conform to Error
:
extension String: Error {}
Then you can just throw a string:
throw "Some Error"
To make the string itself be the localizedString
of the error you can instead extend LocalizedError
:
extension String: LocalizedError {
public var errorDescription: String? { return self }
}
I know I am posting this answer little late, but I felt it is worth using Google's fuse location provider service to get the current location.
Main features of this api are :
1.Simple APIs: Lets you choose your accuracy level as well as power consumption.
2.Immediately available: Gives your apps immediate access to the best, most recent location.
3.Power-efficiency: It chooses the most efficient way to get the location with less power consumptions
4.Versatility: Meets a wide range of needs, from foreground uses that need highly accurate location to background uses that need periodic location updates with negligible power impact.
It is flexible in while updating in location also.
If you want current location only when your app starts then you can use getLastLocation(GoogleApiClient)
method.
If you want to update your location continuously then you can use requestLocationUpdates(GoogleApiClient,LocationRequest, LocationListener)
You can find a very nice blog about fuse location here and google doc for fuse location also can be found here.
Update
According to developer docs starting from Android O they have added new limits on background location.
If your app is running in the background, the location system service computes a new location for your app only a few times each hour. This is the case even when your app is requesting more frequent location updates. However if your app is running in the foreground, there is no change in location sampling rates compared to Android 7.1.1 (API level 25).
Kindly check Column ApplicationId datatype in Table aspnet_Users , ApplicationId column datatype should be uniqueidentifier .
*Your parameter order is passed wrongly , Parameter @id should be passed as first argument, but in your script it is placed in second argument..*
So error is raised..
Please refere sample script:
DECLARE @id uniqueidentifier
SET @id = NEWID()
Create Table #temp1(AppId uniqueidentifier)
insert into #temp1 values(@id)
Select * from #temp1
Drop Table #temp1
Communicating between fragments is fairly complicated (I find the listeners concept a little challenging to implement).
It is common to use a 'Event Bus" to abstract these communications. This is a 3rd party library that takes care of this communication for you.
'Otto' is one that is used often to do this, and might be worth looking into: http://square.github.io/otto/
//for images and swf videos use width as "100%" and height as "98%"
mWebView2.getSettings().setJavaScriptEnabled(true);
mWebView2.getSettings().setLoadWithOverviewMode(true);
mWebView2.getSettings().setUseWideViewPort(true);
mWebView2.setScrollBarStyle(WebView.SCROLLBARS_OUTSIDE_OVERLAY);
mWebView2.setScrollbarFadingEnabled(true);
pyplot
is a sub-module of matplotlib
which doesn't get imported with a simple import matplotlib
.
>>> import matplotlib
>>> print matplotlib.pyplot
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
AttributeError: 'module' object has no attribute 'pyplot'
>>> import matplotlib.pyplot
>>>
It seems customary to do: import matplotlib.pyplot as plt
at which time you can use the various functions and classes it contains:
p = plt.plot(...)
I tried a couple of solution but I thing easy way like this (you are in the local folder):
#!/bin/bash
git fetch
var_local=`cat .git/refs/heads/master`
var_remote=`git log origin/master -1 | head -n1 | cut -d" " -f2`
if [ "$var_remote" = "$var_local" ]; then
echo "Strings are equal." #1
else
echo "Strings are not equal." #0 if you want
fi
Then you did compare local git and remote git last commit number....
fast and best macro
#define get_bit_status() ( YOUR_VAR & ( 1 << BITX ) )
.
.
if (get_rx_pin_status() == ( 1 << BITX ))
{
do();
}
Solution in java. You can add all the String elements to an ArrayList of strings and return the list. Here I am just printing it out.
void numberPairsForSum(int[] array, int sum) {
HashSet<Integer> set = new HashSet<Integer>();
for (int num : array) {
if (set.contains(sum - num)) {
String s = num + ", " + (sum - num) + " add up to " + sum;
System.out.println(s);
}
set.add(num);
}
}
using System;
using System.ComponentModel;
using System.Threading;
namespace BackGroundWorkerExample
{
class Program
{
private static BackgroundWorker backgroundWorker;
static void Main(string[] args)
{
backgroundWorker = new BackgroundWorker
{
WorkerReportsProgress = true,
WorkerSupportsCancellation = true
};
backgroundWorker.DoWork += backgroundWorker_DoWork;
//For the display of operation progress to UI.
backgroundWorker.ProgressChanged += backgroundWorker_ProgressChanged;
//After the completation of operation.
backgroundWorker.RunWorkerCompleted += backgroundWorker_RunWorkerCompleted;
backgroundWorker.RunWorkerAsync("Press Enter in the next 5 seconds to Cancel operation:");
Console.ReadLine();
if (backgroundWorker.IsBusy)
{
backgroundWorker.CancelAsync();
Console.ReadLine();
}
}
static void backgroundWorker_DoWork(object sender, DoWorkEventArgs e)
{
for (int i = 0; i < 200; i++)
{
if (backgroundWorker.CancellationPending)
{
e.Cancel = true;
return;
}
backgroundWorker.ReportProgress(i);
Thread.Sleep(1000);
e.Result = 1000;
}
}
static void backgroundWorker_ProgressChanged(object sender, ProgressChangedEventArgs e)
{
Console.WriteLine("Completed" + e.ProgressPercentage + "%");
}
static void backgroundWorker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
if (e.Cancelled)
{
Console.WriteLine("Operation Cancelled");
}
else if (e.Error != null)
{
Console.WriteLine("Error in Process :" + e.Error);
}
else
{
Console.WriteLine("Operation Completed :" + e.Result);
}
}
}
}
Also, referr the below link you will understand the concepts of Background
:
http://www.c-sharpcorner.com/UploadFile/1c8574/threads-in-wpf/
for tensorflow 2.1.0, following code works fine.
import tensorflow as tf
tf.compat.v1.logging.set_verbosity(tf.compat.v1.logging.ERROR)
Caseless enums can also be be used.
Advantage - They cannot be instantiated.
enum API {
enum Endpoint {
static let url1 = "url1"
static let url2 = "url2"
}
enum BaseURL {
static let dev = "dev"
static let prod = "prod"
}
}
I'm getting an index out of range error with the accepted answer solution. Reason: When range start, it is not iterate value one by one, it is iterate by index. If you modified a slice while it is in range, it will induce some problem.
Old Answer:
chars := []string{"a", "a", "b"}
for i, v := range chars {
fmt.Printf("%+v, %d, %s\n", chars, i, v)
if v == "a" {
chars = append(chars[:i], chars[i+1:]...)
}
}
fmt.Printf("%+v", chars)
Expected :
[a a b], 0, a
[a b], 0, a
[b], 0, b
Result: [b]
Actual:
// Autual
[a a b], 0, a
[a b], 1, b
[a b], 2, b
Result: [a b]
Correct Way (Solution):
chars := []string{"a", "a", "b"}
for i := 0; i < len(chars); i++ {
if chars[i] == "a" {
chars = append(chars[:i], chars[i+1:]...)
i-- // form the remove item index to start iterate next item
}
}
fmt.Printf("%+v", chars)
Source: https://dinolai.com/notes/golang/golang-delete-slice-item-in-range-problem.html
A virtual function makes its class a polymorphic base class. Derived classes can override virtual functions. Virtual functions called through base class pointers/references will be resolved at run-time. That is, the dynamic type of the object is used instead of its static type:
Derived d;
Base& rb = d;
// if Base::f() is virtual and Derived overrides it, Derived::f() will be called
rb.f();
A pure virtual function is a virtual function whose declaration ends in =0
:
class Base {
// ...
virtual void f() = 0;
// ...
A pure virtual function implicitly makes the class it is defined for abstract (unlike in Java where you have a keyword to explicitly declare the class abstract). Abstract classes cannot be instantiated. Derived classes need to override/implement all inherited pure virtual functions. If they do not, they too will become abstract.
An interesting 'feature' of C++ is that a class can define a pure virtual function that has an implementation. (What that's good for is debatable.)
Note that C++11 brought a new use for the delete
and default
keywords which looks similar to the syntax of pure virtual functions:
my_class(my_class const &) = delete;
my_class& operator=(const my_class&) = default;
See this question and this one for more info on this use of delete
and default
.
This answer is similar to others, but is overall the best for most applications. You need to know the image size before hand which you usually do. This will let you add overlay text, titles etc. with no negative padding or absolute positioning of the image. They key is to set the padding % to match the image aspect ratio as seen in the example below. I used this answer and essentially just added an image background.
.wrapper {_x000D_
width: 100%;_x000D_
/* whatever width you want */_x000D_
display: inline-block;_x000D_
position: relative;_x000D_
background-size: contain;_x000D_
background: url('https://upload.wikimedia.org/wikipedia/en/thumb/6/67/Wiki-llama.jpg/1600px-Wiki-llama.jpg') top center no-repeat;_x000D_
margin: 0 auto;_x000D_
}_x000D_
.wrapper:after {_x000D_
padding-top: 75%;_x000D_
/* this llama image is 800x600 so set the padding top % to match 600/800 = .75 */_x000D_
display: block;_x000D_
content: '';_x000D_
}_x000D_
.main {_x000D_
position: absolute;_x000D_
top: 0;_x000D_
bottom: 0;_x000D_
right: 0;_x000D_
left: 0;_x000D_
color: black;_x000D_
text-align: center;_x000D_
margin-top: 5%;_x000D_
}
_x000D_
<div class="wrapper">_x000D_
<div class="main">_x000D_
This is where your overlay content goes, titles, text, buttons, etc._x000D_
</div>_x000D_
</div>
_x000D_
Alternativly if your using bootstrap then you can just add align-middle
to vertical align the element.
<button id="whaever" class="btn btn-large btn-primary" style="padding: 20px;" name="Continue" type="submit">Continue
<i class="icon-ok align-middle" style="font-size:40px;"></i>
</button>
Instead of wading through the description of all the options, you can jump to 3.4.3 Short Options Cross Reference
under the info tar
command.
x
means --extract
. v
means --verbose
. f
means --file
. z
means --gzip
. You can combine one-letter arguments together, and f
takes an argument, the filename. There is something you have to watch out for:
Short options' letters may be clumped together, but you are not required to do this (as compared to old options; see below). When short options are clumped as a set, use one (single) dash for them all, e.g., ''tar' -cvf'. Only the last option in such a set is allowed to have an argument(1).
This old way of writing 'tar' options can surprise even experienced users. For example, the two commands:tar cfz archive.tar.gz file tar -cfz archive.tar.gz file
are quite different. The first example uses 'archive.tar.gz' as the value for option 'f' and recognizes the option 'z'. The second example, however, uses 'z' as the value for option 'f' -- probably not what was intended.
Plain Javascript Solution (DEMO) :
<br/><br/><br/><br/><br/><br/><br/>
<div>
<div id="myyy_bar" style="background:red;"> Here is window </div>
</div>
<br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/>
<script type="text/javascript">
var myyElement = document.getElementById("myyy_bar");
var EnableConsoleLOGS = true; //to check the results in Browser's Inspector(Console), whenever you are scrolling
// ==============================================
window.addEventListener('scroll', function (evt) {
var Positionsss = GetTopLeft ();
if (EnableConsoleLOGS) { console.log(Positionsss); }
if (Positionsss.toppp > 70) { myyElement.style.position="relative"; myyElement.style.top = "0px"; myyElement.style.right = "auto"; }
else { myyElement.style.position="fixed"; myyElement.style.top = "100px"; myyElement.style.right = "0px"; }
});
function GetOffset (object, offset) {
if (!object) return;
offset.x += object.offsetLeft; offset.y += object.offsetTop;
GetOffset (object.offsetParent, offset);
}
function GetScrolled (object, scrolled) {
if (!object) return;
scrolled.x += object.scrollLeft; scrolled.y += object.scrollTop;
if (object.tagName.toLowerCase () != "html") { GetScrolled (object.parentNode, scrolled); }
}
function GetTopLeft () {
var offset = {x : 0, y : 0}; GetOffset (myyElement.parentNode, offset);
var scrolled = {x : 0, y : 0}; GetScrolled (myyElement.parentNode.parentNode, scrolled);
var posX = offset.x - scrolled.x; var posY = offset.y - scrolled.y;
return {lefttt: posX , toppp: posY };
}
// ==============================================
</script>
Thank you so much for that class, Cristian.
I made a minor tweak to it so that the custom loading view is optional, like so:
@Override
public View getVideoLoadingProgressView() // Video will start loading, only called in the case of VideoView (typically API level 10-)
{
if (loadingView == null)
{
return super.getVideoLoadingProgressView();
}
else
{
loadingView.setVisibility(View.VISIBLE);
return loadingView;
}
}
I also added a new constructor that just takes two parameters. Anyway, just a minor simplification if you don't need the loading view. Thanks again for providing this.
Example for String Methods
Given a list of filenames, we want to rename all the files with extension hpp to the extension h. To do this, we would like to generate a new list called newfilenames, consisting of the new filenames. Fill in the blanks in the code using any of the methods you’ve learned thus far, like a for loop or a list comprehension.
filenames = ["program.c", "stdio.hpp", "sample.hpp", "a.out", "math.hpp", "hpp.out"]
# Generate newfilenames as a list containing the new filenames
# using as many lines of code as your chosen method requires.
newfilenames = []
for i in filenames:
if i.endswith(".hpp"):
x = i.replace("hpp", "h")
newfilenames.append(x)
else:
newfilenames.append(i)
print(newfilenames)
# Should be ["program.c", "stdio.h", "sample.h", "a.out", "math.h", "hpp.out"]
Wrapped up in a plugin
Limitations:
(function($) {_x000D_
$.fn.uncheckableRadio = function() {_x000D_
var $root = this;_x000D_
$root.each(function() {_x000D_
var $radio = $(this);_x000D_
if ($radio.prop('checked')) {_x000D_
$radio.data('checked', true);_x000D_
} else {_x000D_
$radio.data('checked', false);_x000D_
}_x000D_
_x000D_
$radio.click(function() {_x000D_
var $this = $(this);_x000D_
if ($this.data('checked')) {_x000D_
$this.prop('checked', false);_x000D_
$this.data('checked', false);_x000D_
$this.trigger('change');_x000D_
} else {_x000D_
$this.data('checked', true);_x000D_
$this.closest('form').find('[name="' + $this.prop('name') + '"]').not($this).data('checked', false);_x000D_
}_x000D_
});_x000D_
});_x000D_
return $root;_x000D_
};_x000D_
}(jQuery));_x000D_
_x000D_
$('[type=radio]').uncheckableRadio();_x000D_
$('button').click(function() {_x000D_
$('[value=V2]').prop('checked', true).trigger('change').trigger('click');_x000D_
});
_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>_x000D_
<form>_x000D_
<label><input name="myRadio" type="radio" value="V1" /> R1</label>_x000D_
<label><input name="myRadio" type="radio" value="V2" /> R2</label>_x000D_
<label><input name="myRadio" type="radio" value="V3" /> R3</label>_x000D_
<button type="button">Change R2</button>_x000D_
</form>
_x000D_
Two simple solutions:
Execute your code once before the while loop
actions() {
check_if_file_present
# Do other stuff
}
actions #1st execution
while [ current_time <= $cutoff ]; do
actions # Loop execution
done
Or:
while : ; do
actions
[[ current_time <= $cutoff ]] || break
done
Bootstrap 4.3 - use code from below snippet - more here
$('#exampleModal').on('show.bs.modal', function (event) {_x000D_
let bookId = $(event.relatedTarget).data('bookid') _x000D_
$(this).find('.modal-body input').val(bookId)_x000D_
})
_x000D_
a.btn.btn-primary.open-AddBookDialog {color: white }
_x000D_
<!-- Initialize Bootstrap 4 -->_x000D_
_x000D_
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">_x000D_
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js" integrity="sha384-UO2eT0CpHqdSJQ6hJty5KVphtPhzWj9WO1clHTMGa3JDZwrnQq4sF86dIHNDz0W1" crossorigin="anonymous"></script>_x000D_
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js" integrity="sha384-JjSmVgyd0p3pXB1rRibZUAYoIIy6OrQ6VrjIEaFf/nJGzIxFDsf4x0xIM+B07jRM" crossorigin="anonymous"></script>_x000D_
_x000D_
<!-- BUTTON -->_x000D_
_x000D_
<a _x000D_
class="btn btn-primary open-AddBookDialog" _x000D_
data-toggle="modal" _x000D_
data-target="#exampleModal" _x000D_
data-bookid="@book.Id" _x000D_
title="Add this item"_x000D_
>Open</a>_x000D_
_x000D_
<!-- MODAL -->_x000D_
_x000D_
<div class="modal fade" id="exampleModal" tabindex="-1" role="dialog">_x000D_
<div class="modal-dialog" role="document">_x000D_
<div class="modal-content">_x000D_
_x000D_
<div class="modal-body">_x000D_
<input type="hidden" name="bookId" id="bookId" value=""/>_x000D_
<input type="text" class="form-control" id="recipient-name"> _x000D_
</div>_x000D_
_x000D_
<div class="modal-footer">_x000D_
<button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>_x000D_
</div>_x000D_
_x000D_
</div>_x000D_
</div>_x000D_
</div>
_x000D_
For Mac Os, command + 1 , then press control + return
Answer from official website
https://datatables.net/reference/option/columns.width
$('#example').dataTable({
"columnDefs": [
{
"width": "20%",
"targets": 0
}
]
});
The problem is that you mapped your servlet to /register.html
and it expects POST method, because you implemented only doPost()
method. So when you open register.html
page, it will not open html page with the form but servlet that handles the form data.
Alternatively when you submit POST form to non-existing URL, web container will display 405 error (method not allowed) instead of 404 (not found).
To fix:
<servlet-mapping>
<servlet-name>Register</servlet-name>
<url-pattern>/Register</url-pattern>
</servlet-mapping>
if setting height to 100% doesn't work, try min-height=100% for div. You still have to set the html tag.
html {
height: 100%;
margin: 0px;
padding: 0px;
position: relative;
}
#fullHeight{
width: 450px;
**min-height: 100%;**
background-color: blue;
}
The most clean and modern way to use singletons in Android is just to use the Dependency Injection framework called Dagger 2. Here you have an explanation of possible scopes you can use. Singleton is one of these scopes. Dependency Injection is not that easy but you shall invest a bit of your time to understand it. It also makes testing easier.
For those who are finding for a thread safe solution, take a look here.
Code:
UPDATE Account
SET sg_status = 'A'
OUTPUT INSERTED.AccountId --You only need this if you want to return some column of the updated item
WHERE AccountId =
(
SELECT TOP 1 AccountId
FROM Account WITH (UPDLOCK) --this is what makes the query thread safe!
ORDER BY CreationDate
)
Using Object isting. Java function to check if specified key exist in AWS S3.
boolean isExist(String key)
{
ObjectListing objects = amazonS3.listObjects(new ListObjectsRequest().withBucketName(bucketName).withPrefix(key));
for (S3ObjectSummary objectSummary : objects.getObjectSummaries())
{
if (objectSummary.getKey().equals(key))
{
return true;
}
}
return false;
}
The simplest way (using Apache Common Codec):
byte[] bytes = Hex.decodeHex(str.toCharArray());
After researching a lot on this laravel validation topic including unique column, finally got the best approach. Please have a look
In your controller
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Validator;
class UserController extends Controller
{
public function saveUser(Request $request){
$validator = Validator::make($request->all(),User::rules($request->get('id')),User::$messages);
if($validator->fails()){
return redirect()->back()->withErrors($validator)->withInput();
}
}
}
saveUser
method can be called for add/update user record.
In you model
class User extends Model
{
public static function rules($id = null)
{
return [
'email_address' => 'required|email|unique:users,email_address,'.$id,
'first_name' => "required",
'last_name' => "required",
'password' => "required|min:6|same:password_confirm",
'password_confirm' => "required:min:6|same:password",
'password_current' => "required:min:6"
];
}
public static $messages = [
'email_address.required' => 'Please enter email!',
'email_address.email' => 'Invalid email!',
'email_address.unique' => 'Email already exist!',
...
];
}
My way of testing this is quite simple, within each abstractUnitTest.java
. I simply create a class in the abstractUnitTest.java that extend the abstract class. And test it that way.
I know this is an old post but try using an extension method:
public static IEnumerable<DateTime> Range(this DateTime startDate, DateTime endDate)
{
return Enumerable.Range(0, (endDate - startDate).Days + 1).Select(d => startDate.AddDays(d));
}
and use it like this
var dates = new DateTime(2000, 1, 1).Range(new DateTime(2000, 1, 31));
Feel free to choose your own dates, you don't have to restrict yourself to January 2000.
try this
<body>
<div class="linkCollection">
<a tabindex=1 href="www.demo1.com">link</a>
<a tabindex=2 href="www.demo2.com">link</a>
<a tabindex=3 href="www.demo3.com">link</a>
<a tabindex=4 href="www.demo4.com">link</a>
<a tabindex=5 href="www.demo5.com">link</a>
<a tabindex=6 href="www.demo6.com">link</a>
<a tabindex=7 href="www.demo7.com">link</a>
<a tabindex=8 href="www.demo8.com">link</a>
<a tabindex=9 href="www.demo9.com">link</a>
<a tabindex=10 href="www.demo10.com">link</a>
</div>
</body>
<script>
$(document).ready(function(){
$(".linkCollection a").focus(function(){
var href=$(this).attr('href');
console.log(href);
// href variable holds the active selected link.
});
});
</script>
don't forgot to add jQuery library
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.0/jquery.min.js"></script>
You can also use std::list
instead of std::vector
. list
has a built-in function list::reverse for reversing elements.
Try this:
private boolean isPackageInstalled(String packageName, PackageManager packageManager) {
try {
packageManager.getPackageInfo(packageName, 0);
return true;
} catch (PackageManager.NameNotFoundException e) {
return false;
}
}
It attempts to fetch information about the package whose name you passed in. Failing that, if a NameNotFoundException
was thrown, it means that no package with that name is installed, so we return false
.
Note that we pass in a PackageManager
instead of a Context
, so that the method is slightly more flexibly usable and doesn't violate the law of Demeter. You can use the method without access to a Context
instance, as long as you have a PackageManager
instance.
Use it like this:
public void someMethod() {
// ...
PackageManager pm = context.getPackageManager();
boolean isInstalled = isPackageInstalled("com.somepackage.name", pm);
// ...
}
Major difference:
String is immutable. It means that you can't modify a string at all; the result of modification is a new string. This is not effective if you plan to append to a string.
StringBuilder is mutable. It can be modified in any way and it doesn't require creation of a new instance. When the work is done, ToString() can be called to get the string.
Strings can participate in interning. It means that strings with same contents may have same addresses. StringBuilder can't be interned.
String is the only class that can have a reference literal.
I'm trying to use variables and settings from that file, not to invoke a separate process.
Well, simply importing the file with import filename
(minus .py, needs to be in the same directory or on your PYTHONPATH
) will run the file, making its variables, functions, classes, etc. available in the filename.variable
namespace.
So if you have cheddar.py
with the variable spam and the function eggs – you can import them with import cheddar
, access the variable with cheddar.spam
and run the function by calling cheddar.eggs()
If you have code in cheddar.py
that is outside a function, it will be run immediately, but building applications that runs stuff on import is going to make it hard to reuse your code. If a all possible, put everything inside functions or classes.
you can use
date -d "30 days ago" +"%d/%m/%Y"
to get the date from 30 days ago, similarly you can replace 30 with x amount of days