It does work in Firefox (including 2.0.0.20
). See http://jsbin.com/akili (add /edit
to the url to edit):
<p id="one">One</p>
<a href="#" onclick="document.getElementById('one').id = 'two'; return false">Link2</a>
The first click changes the id
to "two"
, the second click errors because the element with id="one"
now can't be found!
Perhaps you have another element already with id="two"
(FYI you can't have more than one element with the same id
).
For Windows Forms you can control cursor position (and selection) with txtbox.SelectionStart
and txtbox.SelectionLength
properties. If you want to set caret to end try this:
txtbox.SelectionStart = txtbox.Text.Length;
txtbox.SelectionLength = 0;
For WPF see this question.
You should use the StringBuilder class.
StringBuilder stringBuilder = new StringBuilder();
stringBuilder.append("Some text");
stringBuilder.append("Some text");
stringBuilder.append("Some text");
String finalString = stringBuilder.toString();
In addition, please visit:
namespace std
{
// define std::byte
enum class byte : unsigned char {};
};
This if your C++ version does not have std::byte will define a byte type in namespace std. Normally you don't want to add things to std, but in this case it is a standard thing that is missing.
std::byte from the STL does much more operations.
Check it out in this demo fiddle, go ahead and change the dropdown or default values in the code.
Setting the passenger.Title
with a value that equals to a title.Value
should work.
View:
<select [(ngModel)]="passenger.Title">
<option *ngFor="let title of titleArray" [value]="title.Value">
{{title.Text}}
</option>
</select>
TypeScript used:
class Passenger {
constructor(public Title: string) { };
}
class ValueAndText {
constructor(public Value: string, public Text: string) { }
}
...
export class AppComponent {
passenger: Passenger = new Passenger("Lord");
titleArray: ValueAndText[] = [new ValueAndText("Mister", "Mister-Text"),
new ValueAndText("Lord", "Lord-Text")];
}
I was using a custom downloader middleware, but wasn't very happy with it, as I didn't manage to make the cache work with it.
A better approach was to implement a custom download handler.
There is a working example here. It looks like this:
# encoding: utf-8
from __future__ import unicode_literals
from scrapy import signals
from scrapy.signalmanager import SignalManager
from scrapy.responsetypes import responsetypes
from scrapy.xlib.pydispatch import dispatcher
from selenium import webdriver
from six.moves import queue
from twisted.internet import defer, threads
from twisted.python.failure import Failure
class PhantomJSDownloadHandler(object):
def __init__(self, settings):
self.options = settings.get('PHANTOMJS_OPTIONS', {})
max_run = settings.get('PHANTOMJS_MAXRUN', 10)
self.sem = defer.DeferredSemaphore(max_run)
self.queue = queue.LifoQueue(max_run)
SignalManager(dispatcher.Any).connect(self._close, signal=signals.spider_closed)
def download_request(self, request, spider):
"""use semaphore to guard a phantomjs pool"""
return self.sem.run(self._wait_request, request, spider)
def _wait_request(self, request, spider):
try:
driver = self.queue.get_nowait()
except queue.Empty:
driver = webdriver.PhantomJS(**self.options)
driver.get(request.url)
# ghostdriver won't response when switch window until page is loaded
dfd = threads.deferToThread(lambda: driver.switch_to.window(driver.current_window_handle))
dfd.addCallback(self._response, driver, spider)
return dfd
def _response(self, _, driver, spider):
body = driver.execute_script("return document.documentElement.innerHTML")
if body.startswith("<head></head>"): # cannot access response header in Selenium
body = driver.execute_script("return document.documentElement.textContent")
url = driver.current_url
respcls = responsetypes.from_args(url=url, body=body[:100].encode('utf8'))
resp = respcls(url=url, body=body, encoding="utf-8")
response_failed = getattr(spider, "response_failed", None)
if response_failed and callable(response_failed) and response_failed(resp, driver):
driver.close()
return defer.fail(Failure())
else:
self.queue.put(driver)
return defer.succeed(resp)
def _close(self):
while not self.queue.empty():
driver = self.queue.get_nowait()
driver.close()
Suppose your scraper is called "scraper". If you put the mentioned code inside a file called handlers.py on the root of the "scraper" folder, then you could add to your settings.py:
DOWNLOAD_HANDLERS = {
'http': 'scraper.handlers.PhantomJSDownloadHandler',
'https': 'scraper.handlers.PhantomJSDownloadHandler',
}
And voilà, the JS parsed DOM, with scrapy cache, retries, etc.
Simplest - and I changed the checkbox class to ID as well:
$(function() {_x000D_
$("#coupon_question").on("click",function() {_x000D_
$(".answer").toggle(this.checked);_x000D_
});_x000D_
});
_x000D_
.answer { display:none }
_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>_x000D_
<fieldset class="question">_x000D_
<label for="coupon_question">Do you have a coupon?</label>_x000D_
<input id="coupon_question" type="checkbox" name="coupon_question" value="1" />_x000D_
<span class="item-text">Yes</span>_x000D_
</fieldset>_x000D_
_x000D_
<fieldset class="answer">_x000D_
<label for="coupon_field">Your coupon:</label>_x000D_
<input type="text" name="coupon_field" id="coupon_field" />_x000D_
</fieldset>
_x000D_
Select your interface
Add filter
start the capture
Click on any action or button that would trigger a GET/POST/PUT/DELETE request
You will see it on listed in the wireshark
If you want to know more details about one specific packet, just select it and Follow > HTTP Stream.
hope this help others !!
An alternative is to use Underscore.js. It should provide what you might have wanted server-side from JQuery.
Assuming you have a field for DateTime
, you could have your query look like this:
SELECT *
FROM TABLE
WHERE DateTime > (GetDate() + 90)
There are two parts of this problem
1) using a parameter that would not alter an url (using params property):
$stateProvider
.state('login', {
params: [
'toStateName',
'toParamsJson'
],
templateUrl: 'partials/login/Login.html'
})
2) passing an object as parameter: Well, there is no direct way how to do it now, as every parameter is converted to string (EDIT: since 0.2.13, this is no longer true - you can use objects directly), but you can workaround it by creating the string on your own
toParamsJson = JSON.stringify(toStateParams);
and in target controller deserialize the object again
originalParams = JSON.parse($stateParams.toParamsJson);
>>> keyDict = {"a","b","c","d"}
>>> dict([(key, []) for key in keyDict])
Output:
{'a': [], 'c': [], 'b': [], 'd': []}
This worked for me for on Windows10
curl -d "{"""owner""":"""sasdasdasdasd"""}" -H "Content-Type: application/json" -X PUT http://localhost:8080/api/changeowner/CAR4
Of cause it's possible to create dynamic classes using very cool ExpandoObject class. But recently I worked on project and faced that Expando Object is serealized in not the same format on xml as an simple Anonymous class, it was pity =( , that is why I decided to create my own class and share it with you. It's using reflection and dynamic directive , builds Assembly, Class and Instance truly dynamicly. You can add, remove and change properties that is included in your class on fly Here it is :
using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Reflection.Emit;
using static YourNamespace.DynamicTypeBuilderTest;
namespace YourNamespace
{
/// This class builds Dynamic Anonymous Classes
public class DynamicTypeBuilderTest
{
///
/// Create instance based on any Source class as example based on PersonalData
///
public static object CreateAnonymousDynamicInstance(PersonalData personalData, Type dynamicType, List<ClassDescriptorKeyValue> classDescriptionList)
{
var obj = Activator.CreateInstance(dynamicType);
var propInfos = dynamicType.GetProperties();
classDescriptionList.ForEach(x => SetValueToProperty(obj, propInfos, personalData, x));
return obj;
}
private static void SetValueToProperty(object obj, PropertyInfo[] propInfos, PersonalData aisMessage, ClassDescriptorKeyValue description)
{
propInfos.SingleOrDefault(x => x.Name == description.Name)?.SetValue(obj, description.ValueGetter(aisMessage), null);
}
public static dynamic CreateAnonymousDynamicType(string entityName, List<ClassDescriptorKeyValue> classDescriptionList)
{
AssemblyName asmName = new AssemblyName();
asmName.Name = $"{entityName}Assembly";
AssemblyBuilder assemblyBuilder = AssemblyBuilder.DefineDynamicAssembly(asmName, AssemblyBuilderAccess.RunAndCollect);
ModuleBuilder moduleBuilder = assemblyBuilder.DefineDynamicModule($"{asmName.Name}Module");
TypeBuilder typeBuilder = moduleBuilder.DefineType($"{entityName}Dynamic", TypeAttributes.Public);
classDescriptionList.ForEach(x => CreateDynamicProperty(typeBuilder, x));
return typeBuilder.CreateTypeInfo().AsType();
}
private static void CreateDynamicProperty(TypeBuilder typeBuilder, ClassDescriptorKeyValue description)
{
CreateDynamicProperty(typeBuilder, description.Name, description.Type);
}
///
///Creation Dynamic property (from MSDN) with some Magic
///
public static void CreateDynamicProperty(TypeBuilder typeBuilder, string name, Type propType)
{
FieldBuilder fieldBuider = typeBuilder.DefineField($"{name.ToLower()}Field",
propType,
FieldAttributes.Private);
PropertyBuilder propertyBuilder = typeBuilder.DefineProperty(name,
PropertyAttributes.HasDefault,
propType,
null);
MethodAttributes getSetAttr =
MethodAttributes.Public | MethodAttributes.SpecialName |
MethodAttributes.HideBySig;
MethodBuilder methodGetBuilder =
typeBuilder.DefineMethod($"get_{name}",
getSetAttr,
propType,
Type.EmptyTypes);
ILGenerator methodGetIL = methodGetBuilder.GetILGenerator();
methodGetIL.Emit(OpCodes.Ldarg_0);
methodGetIL.Emit(OpCodes.Ldfld, fieldBuider);
methodGetIL.Emit(OpCodes.Ret);
MethodBuilder methodSetBuilder =
typeBuilder.DefineMethod($"set_{name}",
getSetAttr,
null,
new Type[] { propType });
ILGenerator methodSetIL = methodSetBuilder.GetILGenerator();
methodSetIL.Emit(OpCodes.Ldarg_0);
methodSetIL.Emit(OpCodes.Ldarg_1);
methodSetIL.Emit(OpCodes.Stfld, fieldBuider);
methodSetIL.Emit(OpCodes.Ret);
propertyBuilder.SetGetMethod(methodGetBuilder);
propertyBuilder.SetSetMethod(methodSetBuilder);
}
public class ClassDescriptorKeyValue
{
public ClassDescriptorKeyValue(string name, Type type, Func<PersonalData, object> valueGetter)
{
Name = name;
ValueGetter = valueGetter;
Type = type;
}
public string Name;
public Type Type;
public Func<PersonalData, object> ValueGetter;
}
///
///Your Custom class description based on any source class for example
/// PersonalData
public static IEnumerable<ClassDescriptorKeyValue> GetAnonymousClassDescription(bool includeAddress, bool includeFacebook)
{
yield return new ClassDescriptorKeyValue("Id", typeof(string), x => x.Id);
yield return new ClassDescriptorKeyValue("Name", typeof(string), x => x.FirstName);
yield return new ClassDescriptorKeyValue("Surname", typeof(string), x => x.LastName);
yield return new ClassDescriptorKeyValue("Country", typeof(string), x => x.Country);
yield return new ClassDescriptorKeyValue("Age", typeof(int?), x => x.Age);
yield return new ClassDescriptorKeyValue("IsChild", typeof(bool), x => x.Age < 21);
if (includeAddress)
yield return new ClassDescriptorKeyValue("Address", typeof(string), x => x?.Contacts["Address"]);
if (includeFacebook)
yield return new ClassDescriptorKeyValue("Facebook", typeof(string), x => x?.Contacts["Facebook"]);
}
///
///Source Data Class for example
/// of cause you can use any other class
public class PersonalData
{
public int Id { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
public string Country { get; set; }
public int Age { get; set; }
public Dictionary<string, string> Contacts { get; set; }
}
}
}
It is also very simple to use DynamicTypeBuilder, you just need put few lines like this:
public class ExampleOfUse
{
private readonly bool includeAddress;
private readonly bool includeFacebook;
private readonly dynamic dynamicType;
private readonly List<ClassDescriptorKeyValue> classDiscriptionList;
public ExampleOfUse(bool includeAddress = false, bool includeFacebook = false)
{
this.includeAddress = includeAddress;
this.includeFacebook = includeFacebook;
this.classDiscriptionList = DynamicTypeBuilderTest.GetAnonymousClassDescription(includeAddress, includeFacebook).ToList();
this.dynamicType = DynamicTypeBuilderTest.CreateAnonymousDynamicType("VeryPrivateData", this.classDiscriptionList);
}
public object Map(PersonalData privateInfo)
{
object dynamicObject = DynamicTypeBuilderTest.CreateAnonymousDynamicInstance(privateInfo, this.dynamicType, classDiscriptionList);
return dynamicObject;
}
}
I hope that this code snippet help somebody =) Enjoy!
Answer to the question is : There are different way to print stderr in python but that depends on 1.) which python version we are using 2.) what exact output we want.
The differnce between print and stderr's write function: stderr : stderr (standard error) is pipe that is built into every UNIX/Linux system, when your program crashes and prints out debugging information (like a traceback in Python), it goes to the stderr pipe.
print: print is a wrapper that formats the inputs (the input is the space between argument and the newline at the end) and it then calls the write function of a given object, the given object by default is sys.stdout, but we can pass a file i.e we can print the input in a file also.
Python2: If we are using python2 then
>>> import sys
>>> print "hi"
hi
>>> print("hi")
hi
>>> print >> sys.stderr.write("hi")
hi
Python2 trailing comma has in Python3 become a parameter, so if we use trailing commas to avoid the newline after a print, this will in Python3 look like print('Text to print', end=' ') which is a syntax error under Python2.
http://python3porting.com/noconv.html
If we check same above sceario in python3:
>>> import sys
>>> print("hi")
hi
Under Python 2.6 there is a future import to make print into a function. So to avoid any syntax errors and other differences we should start any file where we use print() with from future import print_function. The future import only works under Python 2.6 and later, so for Python 2.5 and earlier you have two options. You can either convert the more complex print to something simpler, or you can use a separate print function that works under both Python2 and Python3.
>>> from __future__ import print_function
>>>
>>> def printex(*args, **kwargs):
... print(*args, file=sys.stderr, **kwargs)
...
>>> printex("hii")
hii
>>>
Case: Point to be noted that sys.stderr.write() or sys.stdout.write() ( stdout (standard output) is a pipe that is built into every UNIX/Linux system) is not a replacement for print, but yes we can use it as a alternative in some case. Print is a wrapper which wraps the input with space and newline at the end and uses the write function to write. This is the reason sys.stderr.write() is faster.
Note: we can also trace and debugg using Logging
#test.py
import logging
logging.info('This is the existing protocol.')
FORMAT = "%(asctime)-15s %(clientip)s %(user)-8s %(message)s"
logging.basicConfig(format=FORMAT)
d = {'clientip': '192.168.0.1', 'user': 'fbloggs'}
logging.warning("Protocol problem: %s", "connection reset", extra=d)
https://docs.python.org/2/library/logging.html#logger-objects
For a non-volatile solution, how about for 2007+:
for cell =INDEX($A$1:$XFC$1048576,ROW(),COLUMN())
for column =INDEX($A$1:$XFC$1048576,0,COLUMN())
for row =INDEX($A$1:$XFC$1048576,ROW(),0)
I have weird bug on Excel 2010 where it won't accept the very last row or column for these formula (row 1048576 & column XFD), so you may need to reference these one short. Not sure if that's the same for any other versions so appreciate feedback and edit.
and for 2003 (INDEX became non-volatile in '97):
for cell =INDEX($A$1:$IV$65536,ROW(),COLUMN())
for column =INDEX($A$1:$IV$65536,0,COLUMN())
for row =INDEX($A$1:$IV$65536,ROW(),0)
The task above can be completed in two simple steps.
CREATE table new_table_name AS(Select * from old_table_name);
The query
above creates a duplicate of a table (with contents as well).
To get the structure, delete the contents of the table using.
DELETE * FROM new_table_name.
Hope this solves your problem. And thanks to the earlier posts. Gave me a lot of insight.
Check this code:
Javascript:
app.config( ["$routeProvider"], function($routeProvider){
$routeProvider.when("/part1", {"templateUrl" : "part1"});
$routeProvider.when("/part2", {"templateUrl" : "part2"});
$routeProvider.otherwise({"redirectTo":"/part1"});
}]
);
function HomeFragmentController($scope) {
$scope.$on("$routeChangeSuccess", function (scope, next, current) {
$scope.transitionState = "active"
});
}
CSS:
.fragmentWrapper {
overflow: hidden;
}
.fragment {
position: relative;
-moz-transition-property: left;
-o-transition-property: left;
-webkit-transition-property: left;
transition-property: left;
-moz-transition-duration: 0.1s;
-o-transition-duration: 0.1s;
-webkit-transition-duration: 0.1s;
transition-duration: 0.1s
}
.fragment:not(.active) {
left: 540px;
}
.fragment.active {
left: 0px;
}
Main page HTML:
<div class="fragmentWrapper" data-ng-view data-ng-controller="HomeFragmentController">
</div>
Partials HTML example:
<div id="part1" class="fragment {{transitionState}}">
</div>
Suppose you have this script
<div>
<p id="response"><p>
<script>
var query = document.location.href.substring(document.location.href.indexOf("?") + 1);
var text_input = query.split("&")[0].split("=")[1];
document.getElementById('response').innerHTML=text_input;
</script> </div>
And the url form is www.localhost.com/web_form_response.html?text_input=stack&over=flow
The text written to <p id="response">
will be stack
For PowerShell 3.0
$PSCommandPath
Contains the full path and file name of the script that is being run.
This variable is valid in all scripts.
The function is then:
function Get-ScriptDirectory {
Split-Path -Parent $PSCommandPath
}
I found the file located at:
C:\xampp\php\php.ini
Uncommented:
;extension=php_curl.dll
There is 2 good answers to slugfy your data, use it https://stackoverflow.com/a/3987966/971619 or it https://stackoverflow.com/a/7610586/971619
import re
if re.search('(?i)Mandy Pande:', line):
...
You can simplify the code by introducing an extra variable.
#include <string.h>
#include <stdio.h>
int main()
{
char str[100], *s = str, *t = NULL;
strcpy(str, "a space delimited string");
while ((t = strtok(s, " ")) != NULL) {
s = NULL;
printf(":%s:\n", t);
}
return 0;
}
Look at the google gson library. It provides a rich api for dealing with this and is very straightforward to use.
dt.Rows[1].ItemArray
gives you a copy of item arrays. When you modify it, you're not modifying the original.
You can simply do this:
dt.Rows[1][3] = "Value";
ItemArray property is used when you want to modify all row values.
ex.:
dt.Rows[1].ItemArray = newItemArray;
NVL will do an implicit conversion to the datatype of the first parameter, so the following does not error
select nvl('a',sysdate) from dual;
COALESCE expects consistent datatypes.
select coalesce('a',sysdate) from dual;
will throw a 'inconsistent datatype error'
Set the User default credentials to true
:
smtp.UseDefaultCredentials = True;
Before that, input your credential:
smtp.Credentials = new NetworkCredential(fromAddress, fromPassword);
This should work fine.
Try this code:
@echo off
color 02
set num1=0
set num2=1
set terminator=5
:loop
set /a num1= %num1% + %num2%
if %num1%==%terminator% goto close
goto open
:close
echo %num1%
pause
exit
:open
echo %num1%
goto loop
num1
is the number to be incremented and num2
is the value added to num1
and terminator is the value where the num1
will end. You can indicate different value for terminator in this statement (if %num1%==%terminator% goto close
). This is the boolean expression goto close is the process if the boolean is true and goto open is the process if the boolean is false.
Nick Grealy's accepted answer is great but acts a bit quirky if your rows are inside a <tbody>
tag (the first row isn't ever sorted and after sorting rows end up outside of the tbody tag, possibly losing formatting).
This is a simple fix, however:
Just change:
document.querySelectorAll('th').forEach(th => th.addEventListener('click', (() => {
const table = th.closest('table');
Array.from(table.querySelectorAll('tr:nth-child(n+2)'))
.sort(comparer(Array.from(th.parentNode.children).indexOf(th), this.asc = !this.asc))
.forEach(tr => table.appendChild(tr) );
to:
document.querySelectorAll('th').forEach(th => th.addEventListener('click', (() => {
const table = th.closest('table');
const tbody = table.querySelector('tbody');
Array.from(tbody.querySelectorAll('tr'))
.sort(comparer(Array.from(th.parentNode.children).indexOf(th), this.asc = !this.asc))
.forEach(tr => tbody.appendChild(tr) );
Starting from Java 10:
List<E> oldList = List.of();
List<E> newList = List.copyOf(oldList);
List.copyOf()
returns an unmodifiable List
containing the elements of the given Collection
.
The given Collection
must not be null
, and it must not contain any null
elements.
Also, if you want to create a deep copy of a List
, you can find many good answers here.
If there are no typos in the question, you got the conditions wrong:
You said this:
IF cells (i,"A") contains the text 'Miami'
...but your code says:
If Cells(i, "A") <> "Miami"
--> <>
means that the value of the cell is not equal to "Miami", so you're not checking what you think you are checking.
I guess you want this instead:
If Cells(i, "A") like "*Miami*"
EDIT:
Sorry, but I can't really help you more. As I already said in a comment, I'm no Excel VBA expert.
Normally I would open Excel now and try your code myself, but I don't even have Excel on any of my machines at home (I use OpenOffice).
Just one general thing: can you identify the row that does not work?
Maybe this helps someone else to answer the question.
Does it ever execute (or at least try to execute) the Cells(i, "C").Value = "BA"
line?
Or is the If Cells(i, "A") like "*Miami*"
stuff already False
?
If yes, try checking just one cell and see if that works.
i also got same error , i just change the java version in pom.xml from 11 to 1.8 and it's work fine.
Bitbucket uses CodeMirror for syntax highlighting. For Bash or shell you can use sh
, bash
, or zsh
. More information can be found at Configuring syntax highlighting for file extensions and Code mirror language modes.
For Ubuntu 16: /etc/mysql/mysql.conf.d/mysqld.cnf
Getting a list of tables:
SELECT
Table_Name = Name,
FROM
MSysObjects
WHERE
(Left([Name],1)<>"~")
AND (Left([Name],4) <> "MSys")
AND ([Type] In (1, 4, 6))
ORDER BY
Name
To bypass POST warning you must reload page with full URL. Works fine.
window.location.href = window.location.protocol +'//'+ window.location.host + window.location.pathname;
yes, you can have associative arrays also in javascript:
var obj =
{
name:'some name',
otherProperty:'prop value',
date: new Date()
};
for(i in obj)
{
var propVal = obj[i]; // i is the key, and obj[i] is the value ...
}
If you want to do something like the following example, you'd have to use nested if
s.
If percentage is greater than or equal to 93%, then corresponding value in B should be 4 and if the percentage is greater than or equal to 90% and less than 92%, then corresponding value in B to be 3.7, etc.
Here's how you'd do it:
=IF(A2>=93%, 4, IF(A2>=90%, 3.7,IF(A2>=87%,3.3,0)))
There is a new chronology.sty by Levi Wiseman. The documentation (pdf) says:
Most timeline packages and solutions for LATEX are used to convey a lot of information and are therefore designed vertically. If you are just attempting to assign labels to dates, a more traditional timeline might be more appropriate. That's what chronology is for.
Here is some example code:
\documentclass{article}
\usepackage{chronology}
\begin{document}
\begin{chronology}[5]{1983}{2010}{3ex}[\textwidth]
\event{1984}{one}
\event[1985]{1986}{two}
\event{\decimaldate{25}{12}{2001}}{three}
\end{chronology}
\end{document}
Which produces this output:
I was having trouble with this same issue, so I wrote a package called include.
Include handles figuring out your project's root folder by way of locating your package.json file, then passes the path argument you give it to the native require() without all of the relative path mess. I imagine this not as a replacement for require(), but a tool for requiring handling non-packaged / non-third-party files or libraries. Something like
var async = require('async'),
foo = include('lib/path/to/foo')
I hope this can be useful.
We have overcome some limitations of the responsiveness of the Facebook plugin by using it as an IFRAME, but bootstrapping at render time with some JavaScript that dynamically sizes the frame (and width/height parameters in the SRC URL) to fill the container element.
If the container is greater than 500px, to avoid having an obvious gutter on the right hand side, we simply add a scale transform with some simple math.
The IFRAME onload event fires when SRC is initially empty (when we bootstrap it) and then again after it finishes loading when we set the SRC, but we simply short-out if SRC attribute already exists.
In our usage, we don't change the width of the Facebook feed for desktop usage, and for handheld/tablet viewports, those widths are fixed by nature (yes, we trap orientation change) but if you want yours to continually adjust if the browser window dimensions change, you could just re-fire the code as an exercise for yourself.
This is tested in with Chrome and Safari, on desktop and iOS/Android:
<script>
function setupFBframe(frame) {
if(frame.src) return; // already set up
// get parent container dimensions to use in src attrib
var container = frame.parentNode;
var containerWidth = container.offsetWidth;
var containerHeight = container.offsetHeight;
var src = 'https://www.facebook.com/plugins/page.php' +
'?href=https%3A%2F%2Fwww.facebook.com%2FYourFacebookAddress%2F' +
'&tabs=timeline' +
'&width=' + containerWidth +
'&height=' + containerHeight +
'&small_header=true' +
'&adapt_container_width=false' + /* doesn't seem to matter */
'&hide_cover=true' +
'&hide_cta=true' +
'&show_facepile=false' +
'&appId';
frame.width = containerWidth;
frame.height = containerHeight;
frame.src = src;
// scale up if container > 500px wide
if(containerWidth) > 500) {
var scale = (containerWidth / 500 );
frame.style.transform = 'scale(' + scale + ')';
}
}
</script>
<style>
#facebook_iframe {
transform-origin: 0 0;
-webkit-transform-origin: 0px 0px;
-moz-transform-origin: 0px 0px;
}
</style>
<iframe frameborder="0" height="0" width="0" onload="var _this = this; window.setTimeout(function(){ setupFBframe(_this); },500 /* let dom settle before eval parent dimensions */ );"></iframe>
EDIT: Forgot about transform-origin, removed need for adjusting left/top to accommodate scale. Thanks Io Ctaptceb
In your servlet context listener contextDestroyed() method, manually deregister the drivers:
// This manually deregisters JDBC driver, which prevents Tomcat 7 from complaining about memory leaks wrto this class
Enumeration<Driver> drivers = DriverManager.getDrivers();
while (drivers.hasMoreElements()) {
Driver driver = drivers.nextElement();
try {
DriverManager.deregisterDriver(driver);
LOG.log(Level.INFO, String.format("deregistering jdbc driver: %s", driver));
} catch (SQLException e) {
LOG.log(Level.SEVERE, String.format("Error deregistering driver %s", driver), e);
}
}
You can access your files via SSL like this:
https://s3.amazonaws.com/bucket_name/images/logo.gif
If you use a custom domain for your bucket, you can use S3 and CloudFront together with your own SSL certificate (or generate a free one via Amazon Certificate Manager): http://aws.amazon.com/cloudfront/custom-ssl-domains/
To expand on Ross Allen's answer, here is a slightly cleaner variant using ES6 arrow syntax.
{this.props.titles.map(title =>
<th key={title}>{title}</th>
)}
It has the advantage that the JSX part is isolated (no return
or ;
), making it easier to put a loop around it.
This is the shortest I've found, though it does return the digits as strings:
let num = 12345;
[...num+''] //["1", "2", "3", "4", "5"]
Or use this to get back integers:
[...num+''].map(n=>+n) //[1, 2, 3, 4, 5]
https://angular.io/docs/ts/latest/guide/router.html
Add the base element just after the
<head>
tag. If theapp
folder is the application root, as it is for our application, set thehref
value exactly as shown here.
The <base href="/">
tells the Angular router what is the static part of the URL. The router then only modifies the remaining part of the URL.
<head>
<base href="/">
...
</head>
Alternatively add
>= Angular2 RC.6
import {APP_BASE_HREF} from '@angular/common';
@NgModule({
declarations: [AppComponent],
imports: [routing /* or RouterModule */],
providers: [{provide: APP_BASE_HREF, useValue : '/' }]
]);
in your bootstrap.
In older versions the imports had to be like
< Angular2 RC.6
import {APP_BASE_HREF} from '@angular/common';
bootstrap(AppComponent, [
ROUTER_PROVIDERS,
{provide: APP_BASE_HREF, useValue : '/' });
]);
< RC.0
import {provide} from 'angular2/core';
bootstrap(AppComponent, [
ROUTER_PROVIDERS,
provide(APP_BASE_HREF, {useValue : '/' });
]);
< beta.17
import {APP_BASE_HREF} from 'angular2/router';
>= beta.17
import {APP_BASE_HREF} from 'angular2/platform/common';
See also Location and HashLocationStrategy stopped working in beta.16
I think you want this:
Dim filename As String
filename = Application.GetOpenFilename
Dim cell As Range
cell = Application.Range("A1")
cell.Value = filename
ddlutils is my best choice:http://db.apache.org/ddlutils/api/org/apache/ddlutils/platform/SqlBuilder.html
here is create example(groovy):
Platform platform = PlatformFactory.createNewPlatformInstance("oracle");//db2,...
//create schema
def db = new Database();
def t = new Table(name:"t1",description:"XXX");
def col1 = new Column(primaryKey:true,name:"id",type:"bigint",required:true);
t.addColumn(col1);
t.addColumn(new Column(name:"c2",type:"DECIMAL",size:"8,2"));
t.addColumn( new Column(name:"c3",type:"varchar"));
t.addColumn(new Column(name:"c4",type:"TIMESTAMP",description:"date"));
db.addTable(t);
println platform.getCreateModelSql(db, false, false)
//you can read Table Object from platform.readModelFromDatabase(....)
def sqlbuilder = platform.getSqlBuilder();
println "insert:"+sqlbuilder.getInsertSql(t,["id":1,c2:3],false);
println "update:"+sqlbuilder.getUpdateSql(t,["id":1,c2:3],false);
println "delete:"+sqlbuilder.getDeleteSql(t,["id":1,c2:3],false);
//http://db.apache.org/ddlutils/database-support.html
This answer might be helpful for a future Googler.
#include <stdio.h>
#include <unistd.h>
int main(){
int p, f;
int rw_setup[2];
char message[20];
p = pipe(rw_setup);
if(p < 0){
printf("An error occured. Could not create the pipe.");
_exit(1);
}
f = fork();
if(f > 0){
write(rw_setup[1], "Hi from Parent", 15);
}
else if(f == 0){
read(rw_setup[0],message,15);
printf("%s %d\n", message, r_return);
}
else{
printf("Could not create the child process");
}
return 0;
}
You can find an advanced two-way pipe call example here.
Some type of input hasn't got the :after or :before pseudo-element, so you can use a background-image with an SVG text element:
input {
background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' version='1.1' height='50px' width='120px'><text x='0' y='15' fill='gray' font-size='15'>Type Something...</text></svg>");
background-repeat: no-repeat;
}
input:focus {
background-image: none;
}
My codepen: https://codepen.io/Scario/pen/BaagbeZ
You can use the following SQL to compare both date and time -
Select * From temp where mydate > STR_TO_DATE('2009-06-29 04:00:44', '%Y-%m-%d %H:%i:%s');
Attached mysql output when I used same SQL on same kind of table and field that you mentioned in the problem-
It should work perfect.
There is no v4.5 shown in the gui, and typically you don't need to manually specify v4.5 since it's an in-place update. However, you can set it explicitly with appcmd like this:
appcmd set apppool /apppool.name: [App Pool Name] /managedRuntimeVersion:v4.5
Appcmd is located in %windir%\System32\inetsrv
. This helped me to fix an issue with Web Deploy, where it was throwing an ERROR_APPPOOL_VERSION_MISMATCH error after upgrading from v4.0 to v4.5.
No, you can use only some escape sequences - \n for example (maybe only this one).
In your html
<table class="table1">
<tr>
<td>
...
</table>
<table class="table2">
<tr>
<td>
...
</table>
In your css:
table.table1 {...}
table.table1 tr {...}
table.table1 td {...}
table.table2 {...}
table.table2 tr {...}
table.table2 td {...}
Compact solution (provided you don't need other environment variables):
call('sqsub -np {} /homedir/anotherdir/executable'.format(var1).split(),
env=dict(LD_LIBRARY_PATH=my_path))
Using the env command line tool:
call('env LD_LIBRARY_PATH=my_path sqsub -np {} /homedir/anotherdir/executable'.format(var1).split())
This worked for me:
If you wrote your Serialized class object into a file, then made some changes to file and compiled it, and then you try to read an object, then this will happen.
So, write the necessary objects to file again if a class is modified and recompiled.
PS: This is NOT a solution; was meant to be a workaround.
in addition to @lonkly solution
method:
/**
* lookup a resource id by field name in static R.class
*
* @author - ceph3us
* @param variableName - name of drawable, e.g R.drawable.<b>image</b>
* @param ? - class of resource, e.g R.drawable.class or R.raw.class
* @return integer id of resource
*/
public static int getResId(String variableName, Class<?> ?)
throws android.content.res.Resources.NotFoundException {
try {
// lookup field in class
java.lang.reflect.Field field = ?.getField(variableName);
// always set access when using reflections
// preventing IllegalAccessException
field.setAccessible(true);
// we can use here also Field.get() and do a cast
// receiver reference is null as it's static field
return field.getInt(null);
} catch (Exception e) {
// rethrow as not found ex
throw new Resources.NotFoundException(e.getMessage());
}
}
Lambda Expression result
var storesList = context.Stores.Select(x => new { Value= x.name,Text= x.ID }).ToList();
You could use numpy.fromfile
, which can read data from both text and binary files. You would first construct a data type, which represents your file format, using numpy.dtype
, and then read this type from file using numpy.fromfile
.
With <button>
, you can use img tags, etc. where text is
<button type='submit'> text -- can be img etc. </button>
with <input>
type, you are limited to text
Add the jar files on class path NOT modulepath.
(It's been a while since I did this stuff. Please don't blindly assume that all the details below are correct. But I hope I'm not too embarrassingly wrong. :))
As the previous answer stated, the Minecraft client (as of 1.3.1) supports SRV record lookup using the service name _minecraft
and the protocol name _tcp
, which means that if your zone file looks like this...
arboristal.com. 86400 IN A <your IP address>
_minecraft._tcp.arboristal.com. 86400 IN SRV 10 20 25565 arboristal.com.
_minecraft._tcp.arboristal.com. 86400 IN SRV 10 40 25566 arboristal.com.
_minecraft._tcp.arboristal.com. 86400 IN SRV 10 40 25567 arboristal.com.
...then Minecraft clients who perform SRV record lookup as hinted in the changelog will use ports 25566 and 25567 with preference (40% of the time each) over port 25565 (20% of the time). We can assume that Minecraft clients who do not find and respect these SRV records will use port 25565 as usual.
However, I would argue that it would actually be more "clean and professional" to do it using a load balancer such as Nginx. (I pick Nginx just because I've used it before. I'm not claiming it's uniquely suited to this task. It might even be a bad choice for some reason.) Then you don't have to mess with your DNS, and you can use the same approach to load-balance any service, not just ones like Minecraft which happen to have done the hard client-side work to look up and respect SRV records. To do it the Nginx way, you'd run Nginx on the arboristal.com
machine with something like the following in /etc/nginx/sites-enabled/arboristal.com
:
upstream minecraft_servers {
ip_hash;
server 127.0.0.1:25566 weight=1;
server 127.0.0.1:25567 weight=1;
server 127.0.0.1:25568 weight=1;
}
server {
listen 25565;
proxy_pass minecraft_servers;
}
Here we are controlling the load-balancing ourselves on the server side (via Nginx), so we no longer need to worry that badly behaved clients might prefer port 25565 to the other two ports. In fact, now all clients will talk to arboristal.com:25565
! But the listener on that port is no longer a Minecraft server; it's Nginx, secretly proxying all the traffic onto three other ports on the same machine.
We load-balance based on a hash of the client's IP address (ip_hash
), so that if a client disconnects and then reconnects later, there's a good chance that it'll get reconnected to the same Minecraft server it had before. (I don't know how much this matters to Minecraft, or how SRV-enabled clients are programmed to deal with this aspect.)
Notice that we used to run a Minecraft server on port 25565; I've moved it to port 25568 so that we can use port 25565 for the load-balancer.
A possible disadvantage of the Nginx method is that it makes Nginx a bottleneck in your system. If Nginx goes down, then all three servers become unreachable. If some part of your system can't keep up with the volume of traffic on that single port, 25565, all three servers become flaky. And not to mention, Nginx is a big new dependency in your ecosystem. Maybe you don't want to introduce yet another massive piece of software with a complicated config language and a huge attack surface. I can respect that.
A possible advantage of the Nginx method is... that it makes Nginx a bottleneck in your system! You can apply global policies via Nginx, such as rejecting packets above a certain size, or responding with a static web page to HTTP connections on port 80. You can also firewall off ports 25566, 25567, and 25568 from the Internet, since now they should be talked to only by Nginx over the loopback interface. This reduces your attack surface somewhat.
Nginx also makes it easier to add new Minecraft servers to your backend; now you can just add a server
line to your config and service nginx reload
. Using the old port-based approach, you'd have to add a new SRV record with your DNS provider (and it could take up to 86400
seconds for clients to notice the change) and then also remember to edit your firewall (e.g. /etc/iptables.rules
) to permit external traffic over that new port.
Nginx also frees you from having to think about DNS TTLs when making ops changes. Suppose you decide to split up your three Minecraft servers onto three different physical machines with different IP addresses. Using Nginx, you can do that completely via config changes to your server
lines, and you can keep those new machines inside your firewall (connected only to Nginx over a private interface), and the changes will take effect immediately, by definition. Whereas, using SRV records, you'll have to rewrite your zone file to something like this...
arboristal.com. 86400 IN CNAME mc1.arboristal.com.
mc1.arboristal.com. 86400 IN A <a new machine's IP address>
mc2.arboristal.com. 86400 IN A <a new machine's IP address>
mc3.arboristal.com. 86400 IN A <a new machine's IP address>
_minecraft._tcp.arboristal.com. 86400 IN SRV 10 20 25565 mc1.arboristal.com.
_minecraft._tcp.arboristal.com. 86400 IN SRV 10 40 25565 mc2.arboristal.com.
_minecraft._tcp.arboristal.com. 86400 IN SRV 10 40 25565 mc3.arboristal.com.
...and you'll have to leave all three new machines poking outside your firewall so that they can receive connections from the Internet. And you'll have to wait up to 86400
seconds for your clients to notice the change, which could affect the complexity of your rollout plan. And if you were running any other services (such as an HTTP server) on arboristal.com
, now you have to move them to the mc1.arboristal.com
machine because of how I did that CNAME. I did that only for the benefit of those hypothetical Minecraft clients who don't respect SRV records and will still be trying to connect to arboristal.com:25565
.
So, I think both ways (SRV records and Nginx load-balancing) are reasonable, and your choice will depend on your personal preferences. I caricature the options as:
arboristal.com
taking over the world, or at least moving to a bigger machine someday. I'm not scared of learning a new tool. What's a zone file?"[self.tableView setTableFooterView:footerView];
The main difference between the web containers and application server is that most web containers such as Apache Tomcat implements only basic JSR like Servlet, JSP, JSTL wheres Application servers implements the entire Java EE Specification. Every application server contains web container.
The LockedOut
property is what you are looking for among all the properties you returned. You are only seeing incomplete output in TechNet. The information is still there. You can isolate that one property using Select-Object
Get-ADUser matt -Properties * | Select-Object LockedOut
LockedOut
---------
False
The link you referenced doesn't contain this information which is obviously misleading. Test the command with your own account and you will see much more information.
Note: Try to avoid -Properties *
. While it is great for simple testing it can make queries, especially ones with multiple accounts, unnecessarily slow. So, in this case, since you only need lockedout
:
Get-ADUser matt -Properties LockedOut | Select-Object LockedOut
Try:
@item.Date.ToString("dd MMM yyyy")
or you could use the [DisplayFormat]
attribute on your view model:
[DisplayFormat(DataFormatString = "{0:dd MMM yyyy}")]
public DateTime Date { get; set }
and in your view simply:
@Html.DisplayFor(x => x.Date)
To "fix" an old commit with a small change, without changing the commit message of the old commit, where OLDCOMMIT
is something like 091b73a
:
git add <my fixed files>
git commit --fixup=OLDCOMMIT
git rebase --interactive --autosquash OLDCOMMIT^
You can also use git commit --squash=OLDCOMMIT
to edit the old commit message during rebase.
See documentation for git commit and git rebase. As always, when rewriting git history, you should only fixup or squash commits you have not yet published to anyone else (including random internet users and build servers).
Detailed explanation
git commit --fixup=OLDCOMMIT
copies the OLDCOMMIT
commit message and automatically prefixes fixup!
so it can be put in the correct order during interactive rebase. (--squash=OLDCOMMIT
does the same but prefixes squash!
.)git rebase --interactive
will bring up a text editor (which can be configured) to confirm (or edit) the rebase instruction sequence. There is info for rebase instruction changes in the file; just save and quit the editor (:wq
in vim
) to continue with the rebase.--autosquash
will automatically put any --fixup=OLDCOMMIT
commits in the correct order. Note that --autosquash
is only valid when the --interactive
option is used.^
in OLDCOMMIT^
means it's a reference to the commit just before OLDCOMMIT
. (OLDCOMMIT^
is the first parent of OLDCOMMIT
.)Optional automation
The above steps are good for verification and/or modifying the rebase instruction sequence, but it's also possible to skip/automate the interactive rebase text editor by:
GIT_SEQUENCE_EDITOR
to a script.Tested and working. Check this
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.Toast;
public class MyAndroidAppActivity extends Activity {
private RadioGroup radioGroup;
private RadioButton radioButton;
private Button btnDisplay;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
addListenerOnButton();
}
public void addListenerOnButton() {
radioGroup = (RadioGroup) findViewById(R.id.radio);
btnDisplay = (Button) findViewById(R.id.btnDisplay);
btnDisplay.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// get selected radio button from radioGroup
int selectedId = radioGroup.getCheckedRadioButtonId();
// find the radiobutton by returned id
radioButton = (RadioButton) findViewById(selectedId);
Toast.makeText(MyAndroidAppActivity.this,
radioButton.getText(), Toast.LENGTH_SHORT).show();
}
});
}
}
xml
<RadioGroup
android:id="@+id/radio"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<RadioButton
android:id="@+id/radioMale"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/radio_male"
android:checked="true" />
<RadioButton
android:id="@+id/radioFemale"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/radio_female" />
</RadioGroup>
Node.js was created explicitly as an experiment in async processing. The theory was that doing async processing on a single thread could provide more performance and scalability under typical web loads than the typical thread-based implementation.
And you know what? In my opinion that theory's been borne out. A node.js app that isn't doing CPU intensive stuff can run thousands more concurrent connections than Apache or IIS or other thread-based servers.
The single threaded, async nature does make things complicated. But do you honestly think it's more complicated than threading? One race condition can ruin your entire month! Or empty out your thread pool due to some setting somewhere and watch your response time slow to a crawl! Not to mention deadlocks, priority inversions, and all the other gyrations that go with multithreading.
In the end, I don't think it's universally better or worse; it's different, and sometimes it's better and sometimes it's not. Use the right tool for the job.
Under Windows7 Pro, I found that Arun's solution worked for me: I could get this to work even with "no user logged on", I did choose use highest priveledges.
From past experience, you must have an account with a password (blank passwords are no good), and if the program doesn't prompt you for the password when you finish the wizard, go back in and edit something till it does!
This is the method in case its not clear which worked
Action: start a program
Program/script : cmd
(doesn't need the .exe bit!)
Add arguments:
/c start "" "E:\Django-1.4.1\setup.bat"
The trailing slash does not matter for your root domain or subdomain. Google sees the two as equivalent.
But trailing slashes do matter for everything else because Google sees the two versions (one with a trailing slash and one without) as being different URLs. Conventionally, a trailing slash (/) at the end of a URL meant that the URL was a folder or directory.
A URL without a trailing slash at the end used to mean that the URL was a file.
In addition to existing answers I'd like to add that you can also have a class instance available app-wide which holds user-related data like UserID
etc.
It may be useful for refactoring e.g. you don't want to fetch UserID
in every controller action and declare an extra UserID
parameter in every method related to Service Layer.
I've done a research and here's my post.
You just extend your class which you derive from DbContext
by adding UserId
property (or implement a custom Session
class which has this property).
At filter level you can fetch your class instance and set UserId
value.
After that wherever you inject your instance - it will have the necessary data (lifetime must be per request, so you register it using AddScoped
method).
Working example:
public class AppInitializationFilter : IAsyncActionFilter
{
private DBContextWithUserAuditing _dbContext;
public AppInitializationFilter(
DBContextWithUserAuditing dbContext
)
{
_dbContext = dbContext;
}
public async Task OnActionExecutionAsync(
ActionExecutingContext context,
ActionExecutionDelegate next
)
{
string userId = null;
int? tenantId = null;
var claimsIdentity = (ClaimsIdentity)context.HttpContext.User.Identity;
var userIdClaim = claimsIdentity.Claims.SingleOrDefault(c => c.Type == ClaimTypes.NameIdentifier);
if (userIdClaim != null)
{
userId = userIdClaim.Value;
}
var tenantIdClaim = claimsIdentity.Claims.SingleOrDefault(c => c.Type == CustomClaims.TenantId);
if (tenantIdClaim != null)
{
tenantId = !string.IsNullOrEmpty(tenantIdClaim.Value) ? int.Parse(tenantIdClaim.Value) : (int?)null;
}
_dbContext.UserId = userId;
_dbContext.TenantId = tenantId;
var resultContext = await next();
}
}
For more information see my answer.
A static library is just an archive of .o
object files. Extract them with ar
(assuming Unix) and pack them back into one big library.
Try this,
Fragment currentFragment = getActivity().getFragmentManager().findFragmentById(R.id.fragment_container);
this will give u the current fragment, then you may compare it to the fragment class and do your stuffs.
if (currentFragment instanceof NameOfYourFragmentClass) {
Log.v(TAG, "find the current fragment");
}
In my case the solution was to delete cookies from the browser.
safe mode on means (HDFS is in READ only mode)
safe mode off means (HDFS is in Writeable and readable mode)
In Hadoop 2.6.0
, we can check the status of name node with help of the below commands:
TO CHECK THE name node status
$ hdfs dfsadmin -safemode get
TO ENTER IN SAFE MODE:
$ hdfs dfsadmin -safemode enter
TO LEAVE SAFE mode
~$ hdfs dfsadmin -safemode leave
I tried:
<input id="btnTest" type="button" value="button" />
<script type="text/javascript">
$(document).ready( function() {
$('#btnTest').click( function() {
$.ajax({
type: "POST",
url: "/Login/Test",
data: { ListID: '1', ItemName: 'test' },
dataType: "json",
success: function(response) { alert(response); },
error: function(xhr, ajaxOptions, thrownError) { alert(xhr.responseText); }
});
});
});
</script>
and C#:
[HttpPost]
public ActionResult Test(string ListID, string ItemName)
{
return Content(ListID + " " + ItemName);
}
It worked. Remove contentType
and set data
without double quotes.
You can just implement the Map.Entry<K, V>
interface yourself:
import java.util.Map;
final class MyEntry<K, V> implements Map.Entry<K, V> {
private final K key;
private V value;
public MyEntry(K key, V value) {
this.key = key;
this.value = value;
}
@Override
public K getKey() {
return key;
}
@Override
public V getValue() {
return value;
}
@Override
public V setValue(V value) {
V old = this.value;
this.value = value;
return old;
}
}
And then use it:
Map.Entry<String, Object> entry = new MyEntry<String, Object>("Hello", 123);
System.out.println(entry.getKey());
System.out.println(entry.getValue());
Here's a simple lock mechanism, implemented via closure
const createLock = () => {
let lockStatus = false
const release = () => {
lockStatus = false
}
const acuire = () => {
if (lockStatus == true)
return false
lockStatus = true
return true
}
return {
lockStatus: lockStatus,
acuire: acuire,
release: release,
}
}
lock = createLock() // create a lock
lock.acuire() // acuired a lock
if (lock.acuire()){
console.log("Was able to acuire");
} else {
console.log("Was not to acuire"); // This will execute
}
lock.release() // now the lock is released
if(lock.acuire()){
console.log("Was able to acuire"); // This will execute
} else {
console.log("Was not to acuire");
}
lock.release() // Hey don't forget to release
_x000D_
The PATCH
method is the correct choice here as you're updating an existing resource - the group ID. PUT
should only be used if you're replacing a resource in its entirety.
Further information on partial resource modification is available in RFC 5789. Specifically, the PUT
method is described as follows:
Several applications extending the Hypertext Transfer Protocol (HTTP) require a feature to do partial resource modification. The existing HTTP PUT method only allows a complete replacement of a document. This proposal adds a new HTTP method, PATCH, to modify an existing HTTP resource.
Based on the new Android Support Library (and this update), now you should call:
ContextCompat.getColor(context, R.color.name.color);
According to the documentation:
public int getColor (int id)
This method was deprecated in API level 23. Use getColor(int, Theme) instead
It is the same solution for getResources().getColorStateList(id)
:
You have to change it like this:
ContextCompat.getColorStateList(getContext(),id);
EDIT 2019
Regarding ThemeOverlay
use the context of the closest view:
val color = ContextCompat.getColor(
closestView.context,
R.color.name.color
)
So this way you get the right color based on your ThemeOverlay.
Specially needed when in same activity you use different themes, like dark/light theme. If you would like to understand more about Themes and Styles this talk is suggested: Developing Themes with Style
The expression a == b
should do the job.
Here is a good breakdown of the pros and cons:
So, it appears that constants should be used when it is very unlikely that the value will ever change, or if no external apps/libs will be using the constant. Static readonly fields should be used when run-time calculation is required, or if external consumers are a factor.
As @Brian Riley already said you should either remove 1 column in your select
select countrylanguage.language ,sum(country.population*countrylanguage.percentage/100)
from countrylanguage
join country on countrylanguage.countrycode = country.code
group by countrylanguage.language
order by sum(country.population*countrylanguage.percentage) desc ;
or add it to your grouping
select countrylanguage.language, country.code, sum(country.population*countrylanguage.percentage/100)
from countrylanguage
join country on countrylanguage.countrycode = country.code
group by countrylanguage.language, country.code
order by sum(country.population*countrylanguage.percentage) desc ;
document.all
is a proprietary Microsoft extension to the W3C standard.
getElementById()
is standard - use that.
However, consider if using a js library like jQuery would come in handy. For example, $("#id")
is the jQuery equivalent for getElementById()
. Plus, you can use more than just CSS3 selectors.
I just ran into this myself since I'm trying to create myself a bare bones framework but started out by creating a new Win32 Program option in Visual Studio 2017. "stdafx.h" is unnecessary and should be removed. Then you can remove the stupid "stdafx.h" and "stdafx.cpp" that is in your Solution Explorer as well as the files from your project. In it's place, you'll need to put
#include <Windows.h>
instead.
try {
// THIS for POST+JSON
options.contentType = 'application/json';
options.type = 'POST';
options.data = JSON.stringify(options.data);
// OR THIS for GET+URL-encoded
//options.data = $.param(_.clone(options.data));
console.log('.fetch options = ', options);
collection.fetch(options);
} catch (excp) {
alert(excp);
}
add this line in your css file:
.classname ul li {
float: left;
}
Your first formulation, image_url('logo.png')
, is correct. If the image is found, it will generate the path /assets/logo.png
(plus a hash in production). However, if Rails cannot find the image that you named, it will fall back to /images/logo.png
.
The next question is: why isn't Rails finding your image? If you put it in app/assets/images/logo.png, then you should be able to access it by going to http://localhost:3000/assets/logo.png
.
If that works, but your CSS isn't updating, you may need to clear the cache. Delete tmp/cache/assets
from your project directory and restart the server (webrick, etc.).
If that fails, you can also try just using background-image: url(logo.png);
That will cause your CSS to look for files with the same relative path (which in this case is /assets).
If you want the file to be opened with the default application, I mean without specifying Acrobat or Reader, you can't open the file in the specified page.
On the other hand, if you are Ok with specifying Acrobat or Reader, keep reading:
You can do it without telling the full Acrobat path, like this:
Process myProcess = new Process();
myProcess.StartInfo.FileName = "acroRd32.exe"; //not the full application path
myProcess.StartInfo.Arguments = "/A \"page=2=OpenActions\" C:\\example.pdf";
myProcess.Start();
If you don't want the pdf to open with Reader but with Acrobat, chage the second line like this:
myProcess.StartInfo.FileName = "Acrobat.exe";
You can query the registry to identify the default application to open pdf files and then define FileName on your process's StartInfo accordingly.
Follow this question for details on doing that: Finding the default application for opening a particular file type on Windows
Just declare your service as provider in app.module.ts only.
It did the job for me.
providers: [Topic1Service,Topic2Service,...,TopicNService],
then either instanciate it using a constructor private parameter :
constructor(private topicService: TopicService) { }
or since if your service is used from html, the -prod option will claim:
Property 'topicService' is private and only accessible within class 'SomeComponent'.
add a member for your service and fill it with the instance recieved in the constructor:
export class SomeComponent {
topicService: TopicService;
constructor(private topicService: TopicService) {
this.topicService= topicService;
}
}
This answer really helped me get started (noob) - but I encountered some weird behavior when I set a start date of 12/31/2014 and added +1 to default the end date. Instead of giving me an end date of 01/01/2015 I was getting 02/01/2015 (!!!). This version parses the components of the start date to avoid these end of year oddities.
$( "#date_start" ).datepicker({
minDate: 0,
dateFormat: "mm/dd/yy",
onSelect: function(selected) {
$("#date_end").datepicker("option","minDate", selected); // mindate on the End datepicker cannot be less than start date already selected.
var date = $(this).datepicker('getDate');
var tempStartDate = new Date(date);
var default_end = new Date(tempStartDate.getFullYear(), tempStartDate.getMonth(), tempStartDate.getDate()+1); //this parses date to overcome new year date weirdness
$('#date_end').datepicker('setDate', default_end); // Set as default
}
});
$( "#date_end" ).datepicker({
minDate: 0,
dateFormat: "mm/dd/yy",
onSelect: function(selected) {
$("#date_start").datepicker("option","maxDate", selected); // maxdate on the Start datepicker cannot be more than end date selected.
}
});
foreach (DataTable table in ds.Tables)
{
foreach (DataRow dr in table.Rows)
{
var ParentId=dr["ParentId"].ToString();
}
}
Images on a file store are the best bet, and supplement this with storing the meta data in a database. From a web server perspective, the fast way to serve stuff up is to point to it directly. If it's in the database - ala Sharepoint - you have the overhead of ADO.Net to pull it out, stream it, etc.
Documentum - while bloated and complicated - has it right in that the files are out on the share and available for you to determine how to store them - disk on the server, SAN, NAS, whatever. The Documentum strategy is to store the files a tree structure by encoding the folders and file names according to their primary key in the DB. The DB becomes the resource for knowing what files are what and for enforcing security. For high volume systems this type of approach is a good way to go.
Also consider this when dealing with metadata: should you ever need to update the attributes of your meta data corpus, the DB is your friend as you can quickly perform the updates with SQL. With other tagging systems you do not have the easy data manipulation tools at hand
Use Invoke-RestMethod
to consume REST-APIs. Save the JSON to a string and use that as the body, ex:
$JSON = @'
{"@type":"login",
"username":"[email protected]",
"password":"yyy"
}
'@
$response = Invoke-RestMethod -Uri "http://somesite.com/oneendpoint" -Method Post -Body $JSON -ContentType "application/json"
If you use Powershell 3, I know there have been some issues with Invoke-RestMethod
, but you should be able to use Invoke-WebRequest
as a replacement:
$response = Invoke-WebRequest -Uri "http://somesite.com/oneendpoint" -Method Post -Body $JSON -ContentType "application/json"
If you don't want to write your own JSON every time, you can use a hashtable and use PowerShell to convert it to JSON before posting it. Ex.
$JSON = @{
"@type" = "login"
"username" = "[email protected]"
"password" = "yyy"
} | ConvertTo-Json
This is an improvement on the ".localized" approach. Start with adding the class extension as this will help with any strings you were setting programatically:
extension String {
func localized (bundle: Bundle = .main, tableName: String = "Localizable") -> String {
return NSLocalizedString(self, tableName: tableName, value: "\(self)", comment: "")
}
}
Example use for strings you set programmatically:
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
Now Xcode's storyboard translation files make the file manager messy and don't handle updates to the storyboard well either. A better approach is to create a new basic label class and assign it to all your storyboard labels:
class BasicLabel: UILabel {
//initWithFrame to init view from code
override init(frame: CGRect) {
super.init(frame: frame)
setupView()
}
//initWithCode to init view from xib or storyboard
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
setupView()
}
//common func to init our view
private func setupView() {
let storyboardText = self.text
text = storyboardText?.localized()
}
}
Now every label you add and provide default default for in the storyboard will automatically get translated, assuming you've provide a translation for it.
You could do the same for UIButton:
class BasicBtn: UIButton {
//initWithFrame to init view from code
override init(frame: CGRect) {
super.init(frame: frame)
setupView()
}
//initWithCode to init view from xib or storyboard
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
setupView()
}
//common func to init our view
private func setupView() {
let storyboardText = self.titleLabel?.text
let lclTxt = storyboardText?.localized()
setTitle(lclTxt, for: .normal)
}
}
points
is not within the function's scope. You can grab a reference to the variable by using nonlocal:
points = 0
def test():
nonlocal points
points += 1
If points
inside test()
should refer to the outermost (module) scope, use global:
points = 0
def test():
global points
points += 1
NO, when you are using only one "=" you are assigning the variable.
You must use "==" : You must use "===" :
if (somevar === '836e3ef9-53d4-414b-a401-6eef16ac01d6'){
$("#code").text(data.DATA[0].ID);
}
You could use fonction like .toLowerCase()
to avoid case problem if you want
On windows I tried to do quit git bash and re-run but didn't work, finally me(frustated) did a restart and it worked the next time :)
Iterables.elementsEqual
is best choice:Iterables.elementsEqual
is enough to compare 2 List
s.
Iterables.elementsEqual
is used in more general scenarios, It accepts more general types: Iterable
. That is, you could even compare a List
with a Set
. (by iterate order, it is important)
Sure ArrayList
and LinkedList
define equals pretty good, you could call equals directly. While when you use a not well defined List, Iterables.elementsEqual
is the best choice. One thing should be noticed: Iterables.elementsEqual
does not accept null
To convert List to array: Iterables.toArray
is easer.
For unit test, I recommend add empty list to your test case.
The three forms of looping are nearly identical. The enhanced for
loop:
for (E element : list) {
. . .
}
is, according to the Java Language Specification, identical in effect to the explicit use of an iterator with a traditional for
loop. In the third case, you can only modify the list contents by removing the current element and, then, only if you do it through the remove
method of the iterator itself. With index-based iteration, you are free to modify the list in any way. However, adding or removing elements that come before the current index risks having your loop skipping elements or processing the same element multiple times; you need to adjust the loop index properly when you make such changes.
In all cases, element
is a reference to the actual list element. None of the iteration methods makes a copy of anything in the list. Changes to the internal state of element
will always be seen in the internal state of the corresponding element on the list.
Essentially, there are only two ways to iterate over a list: by using an index or by using an iterator. The enhanced for loop is just a syntactic shortcut introduced in Java 5 to avoid the tedium of explicitly defining an iterator. For both styles, you can come up with essentially trivial variations using for
, while
or do while
blocks, but they all boil down to the same thing (or, rather, two things).
EDIT: As @iX3 points out in a comment, you can use a ListIterator
to set the current element of a list as you are iterating. You would need to use List#listIterator()
instead of List#iterator()
to initialize the loop variable (which, obviously, would have to be declared a ListIterator
rather than an Iterator
).
Just echo the javascript out inside the if function
<form name="testForm" id="testForm" method="POST" >
<input type="submit" name="btn" value="submit" autofocus onclick="return true;"/>
</form>
<?php
if(isset($_POST['btn'])){
echo "
<script type=\"text/javascript\">
var e = document.getElementById('testForm'); e.action='test.php'; e.submit();
</script>
";
}
?>
Try to do something like this:
db.getCollection('collectionName').find({'ArrayName.1': {$exists: true}})
1 is number, if you want to fetch record greater than 50 then do ArrayName.50 Thanks.
You should add reference to PresentationCore.dll.
Rather than try to target @media rules at specific devices, it is arguably more practical to base them on your particular layout instead. That is, gradually narrow your desktop browser window and observe the natural breakpoints for your content. It's different for every site. As long as the design flows well at each browser width, it should work pretty reliably on any screen size (and there are lots and lots of them out there.)
In C you could use the combination of the setjmp()
and longjmp()
functions, defined in setjmp.h
. Example from Wikipedia
#include <stdio.h>
#include <setjmp.h>
static jmp_buf buf;
void second(void) {
printf("second\n"); // prints
longjmp(buf,1); // jumps back to where setjmp
// was called - making setjmp now return 1
}
void first(void) {
second();
printf("first\n"); // does not print
}
int main() {
if ( ! setjmp(buf) ) {
first(); // when executed, setjmp returns 0
} else { // when longjmp jumps back, setjmp returns 1
printf("main"); // prints
}
return 0;
}
Note: I would actually advise you not to use them as they work awful with C++ (destructors of local objects wouldn't get called) and it is really hard to understand what is going on. Return some kind of error instead.
What I did is like this.
String person;
String address;
person = your value;
address =your value;
string connString = ConfigurationManager.ConnectionStrings["default"].ConnectionString;
MySqlConnection conn = new MySqlConnection(connString);
conn.Open();
MySqlCommand comm = conn.CreateCommand();
comm.CommandText = "INSERT INTO room(person,address) VALUES('"+person+"','"+address+"')";
comm.ExecuteNonQuery();
conn.Close();
Install Oracle's MySql.Data
NuGet package.
using MySql.Data;
using MySql.Data.MySqlClient;
namespace Data
{
public class DBConnection
{
private DBConnection()
{
}
public string Server { get; set; }
public string DatabaseName { get; set; }
public string UserName { get; set; }
public string Password { get; set; }
private MySqlConnection Connection { get; set;}
private static DBConnection _instance = null;
public static DBConnection Instance()
{
if (_instance == null)
_instance = new DBConnection();
return _instance;
}
public bool IsConnect()
{
if (Connection == null)
{
if (String.IsNullOrEmpty(databaseName))
return false;
string connstring = string.Format("Server={0}; database={1}; UID={2}; password={3}", Server, DatabaseName, UserName, Password);
Connection = new MySqlConnection(connstring);
Connection.Open();
}
return true;
}
public void Close()
{
Connection.Close();
}
}
}
Example:
var dbCon = DBConnection.Instance();
dbCon.Server = "YourServer";
dbCon.DatabaseName = "YourDatabase";
dbCon.UserName = "YourUsername";
dbCon.Password = "YourPassword";
if (dbCon.IsConnect())
{
//suppose col0 and col1 are defined as VARCHAR in the DB
string query = "SELECT col0,col1 FROM YourTable";
var cmd = new MySqlCommand(query, dbCon.Connection);
var reader = cmd.ExecuteReader();
while(reader.Read())
{
string someStringFromColumnZero = reader.GetString(0);
string someStringFromColumnOne = reader.GetString(1);
Console.WriteLine(someStringFromColumnZero + "," + someStringFromColumnOne);
}
dbCon.Close();
}
Actually, the erase
function works for two profiles:
Removing a single element
iterator erase (iterator position);
Removing a range of elements
iterator erase (iterator first, iterator last);
Since std::vec.begin() marks the start of container and if we want to delete the ith element in our vector, we can use:
vec.erase(vec.begin() + index);
If you look closely, vec.begin() is just a pointer to the starting position of our vector and adding the value of i to it increments the pointer to i position, so instead we can access the pointer to the ith element by:
&vec[i]
So we can write:
vec.erase(&vec[i]); // To delete the ith element
Yes. Empty or incomplete headers or response body typically caused by broken connections or server side crash can cause 502 errors if accessed via a gateway or proxy.
For more information about the network errors
In android Oreo,notification app is done by using channels and NotificationHelper class.It should have a channel id and channel name.
First u have to create a NotificationHelper Class
public class NotificationHelper extends ContextWrapper {
private static final String EDMT_CHANNEL_ID="com.example.safna.notifier1.EDMTDEV";
private static final String EDMT_CHANNEL_NAME="EDMTDEV Channel";
private NotificationManager manager;
public NotificationHelper(Context base)
{
super(base);
createChannels();
}
private void createChannels()
{
NotificationChannel edmtChannel=new NotificationChannel(EDMT_CHANNEL_ID,EDMT_CHANNEL_NAME,NotificationManager.IMPORTANCE_DEFAULT);
edmtChannel.enableLights(true);
edmtChannel.enableVibration(true);
edmtChannel.setLightColor(Color.GREEN);
edmtChannel.setLockscreenVisibility(Notification.VISIBILITY_PRIVATE);
getManager().createNotificationChannel(edmtChannel);
}
public NotificationManager getManager()
{
if (manager==null)
manager=(NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);
return manager;
}
public NotificationCompat.Builder getEDMTChannelNotification(String title,String body)
{
return new NotificationCompat.Builder(getApplicationContext(),EDMT_CHANNEL_ID)
.setContentText(body)
.setContentTitle(title)
.setSmallIcon(R.mipmap.ic_launcher_round)
.setAutoCancel(true);
}
}
Create a button in activity xml file,then In the main activity
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
helper=new NotificationHelper(this);
btnSend=(Button)findViewById(R.id.btnSend);
btnSend.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String title="Title";
String content="Content";
Notification.Builder builder=helper.getEDMTChannelNotification(title,content);
helper.getManager().notify(new Random().nextInt(),builder.build());
}
});
}
Then run ur project
Without an access modifier, a class member is accessible throughout the package in which it's declared. You can learn more from the Java Language Specification, §6.6.
Members of an interface are always publicly accessible, whether explicitly declared or not.
The difference lies in the fact that ./gradlew
indicates you are using a gradle wrapper. The wrapper is generally part of a project and it facilitates installation of gradle. If you were using gradle without the wrapper you would have to manually install it - for example, on a mac brew install gradle
and then invoke gradle using the gradle
command. In both cases you are using gradle, but the former is more convenient and ensures version consistency across different machines.
Each Wrapper is tied to a specific version of Gradle, so when you first run one of the commands above for a given Gradle version, it will download the corresponding Gradle distribution and use it to execute the build.
Not only does this mean that you don’t have to manually install Gradle yourself, but you are also sure to use the version of Gradle that the build is designed for. This makes your historical builds more reliable
Read more here - https://docs.gradle.org/current/userguide/gradle_wrapper.html
Also, Udacity has a neat, high level video explaining the concept of the gradle wrapper - https://www.youtube.com/watch?v=1aA949H-shk
You may call this JS function to check if file exists on the Server:
function doesFileExist(urlToFile)
{
var xhr = new XMLHttpRequest();
xhr.open('HEAD', urlToFile, false);
xhr.send();
if (xhr.status == "404") {
console.log("File doesn't exist");
return false;
} else {
console.log("File exists");
return true;
}
}
Iterate over the Array. First initialize the maximum value to the first element of the array and then for each element optimize it if the element under consideration is greater.
Out of the following two:
(1) List<?> myList = new ArrayList<?>();
(2) ArrayList<?> myList = new ArrayList<?>();
First is generally preferred. As you will be using methods from List
interface only, it provides you the freedom to use some other implementation of List
e.g. LinkedList
in future. So it decouples you from specific implementation. Now there are two points worth mentioning:
ArrayList
over LinkedList
. More here.I am wondering if anyone uses (2)
Yes sometimes (read rarely). When we need methods that are part of implementation of ArrayList
but not part of the interface List
. For example ensureCapacity
.
Also, how often (and can I please get an example) does the situation actually require using (1) over (2)
Almost always you prefer option (1). This is a classical design pattern in OOP where you always try to decouple your code from specific implementation and program to the interface.
Singletons are bad from a purist point of view.
From a pratical point of view, a singleton is a trade-off developing time vs complexity.
If you know your application won't change that much they are pretty OK to go with. Just know that you may need to refactor things up if your requirements change in an unexpected way (which is pretty OK in most cases).
Singletons sometimes also complicate unit testing.
I had let this go for a good while but revisited it later. Since this question is viewed regularly. This is eventually what I ended up using that worked for me.
define("DOC_ROOT","/path/to/html");
//username and password of account
$username = trim($values["email"]);
$password = trim($values["password"]);
//set the directory for the cookie using defined document root var
$path = DOC_ROOT."/ctemp";
//build a unique path with every request to store. the info per user with custom func. I used this function to build unique paths based on member ID, that was for my use case. It can be a regular dir.
//$path = build_unique_path($path); // this was for my use case
//login form action url
$url="https://www.example.com/login/action";
$postinfo = "email=".$username."&password=".$password;
$cookie_file_path = $path."/cookie.txt";
$ch = curl_init();
curl_setopt($ch, CURLOPT_HEADER, false);
curl_setopt($ch, CURLOPT_NOBODY, false);
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($ch, CURLOPT_COOKIEJAR, $cookie_file_path);
//set the cookie the site has for certain features, this is optional
curl_setopt($ch, CURLOPT_COOKIE, "cookiename=0");
curl_setopt($ch, CURLOPT_USERAGENT,
"Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7.12) Gecko/20050915 Firefox/1.0.7");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_REFERER, $_SERVER['REQUEST_URI']);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 0);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $postinfo);
curl_exec($ch);
//page with the content I want to grab
curl_setopt($ch, CURLOPT_URL, "http://www.example.com/page/");
//do stuff with the info with DomDocument() etc
$html = curl_exec($ch);
curl_close($ch);
Update: This code was never meant to be a copy and paste. It was to show how I used it for my specific use case. You should adapt it to your code as needed. Such as directories, vars etc
SELECT SUBSTR(TRIM(rtp.role),1,12) AS ROLE
, SUBSTR(rp.grantee,1,16) AS GRANTEE
, SUBSTR(TRIM(rtp.privilege),1,12) AS PRIVILEGE
, SUBSTR(TRIM(rtp.owner),1,12) AS OWNER
, SUBSTR(TRIM(rtp.table_name),1,28) AS TABLE_NAME
, SUBSTR(TRIM(rtp.column_name),1,20) AS COLUMN_NAME
, SUBSTR(rtp.common,1,4) AS COMMON
, SUBSTR(rtp.grantable,1,4) AS GRANTABLE
, SUBSTR(rp.default_role,1,16) AS DEFAULT_ROLE
, SUBSTR(rp.admin_option,1,4) AS ADMIN_OPTION
FROM role_tab_privs rtp
LEFT JOIN dba_role_privs rp
ON (rtp.role = rp.granted_role)
WHERE ('&1' IS NULL OR UPPER(rtp.role) LIKE UPPER('%&1%'))
AND ('&2' IS NULL OR UPPER(rp.grantee) LIKE UPPER('%&2%'))
AND ('&3' IS NULL OR UPPER(rtp.table_name) LIKE UPPER('%&3%'))
AND ('&4' IS NULL OR UPPER(rtp.owner) LIKE UPPER('%&4%'))
ORDER BY 1
, 2
, 3
, 4
;
SQLPLUS> @all_roles '' '' '' '' '' ''
SQLPLUS> @all_roles 'somerol' '' '' '' '' ''
SQLPLUS> @all_roles 'roler' 'username' '' '' '' ''
SQLPLUS> @all_roles '' '' 'part-of-database-package-name' '' '' ''
etc.
tarxz() { tar cf - "$1" | xz -4e > "$1".tar.xz ; }
tarxz name_of_directory
(Notice, not name_of_directory/
)
If you want to use compression options for xz
, or if you are using tar
on MacOS, you probably want to avoid the tar -cJf
syntax.
According to man xz
, the way to do this is:
tar cf - filename | xz -4e > filename.tar.xz
Because I liked Wojciech Adam Koszek's format, but not information:
c
creates a new archive for the specified files.f
reads from a directory (best to put this second because -cf
!= -fc
)-
outputs to Standard Output|
pipes output to the next commandxz -4e
calls xz
with the -4e
compression option. (equal to -4
--extreme
)> filename.tar.xz
directs the tarred and compressed file to filename.tar.xz
where -4e
is, use your own compression options.
I often use -k
to --keep
the original file and -9
for really heavy compression. -z
to manually set xz
to zip, though it defaults to zipping if not otherwise directed.
To echo Rafael van Horn, to uncompress & untar (see note below):
xz -dc filename.tar.xz | tar x
Note: unlike Rafael's answer, use xz -dc
instead of catxz
. The docs recommend this in case you are using this for scripting. Best to have a habit of using -d
or --decompress
instead of unxz
as well. However, if you must, using those commands from the command line is fine.
Use the span
tag
<style>
.redText
{
color:red;
}
.blackText
{
color:black;
font-weight:bold;
}
</style>
<span class="redText">My Name is:</span> <span class="blackText">Tintincute</span>
It's also a good idea to avoid inline styling. Use a custom CSS class instead.
Installing requirements.txt file inside virtual env with Python 3:
I had the same issue. I was trying to install the requirements.txt file inside a virtual environment. I found the solution.
Initially, I created my virtualenv in this way:
virtualenv -p python3 myenv
Activate the environment using:
source myenv/bin/activate
Now I installed the requirements.txt file using:
pip3 install -r requirements.txt
Installation was successful and I was able to import the modules.
You could try with android:background="@android:drawable/list_selector_background"
to get the same effect as the "Add alarm" in the default "Alarm Clock" (now Desk Clock).
Goto Nuget Package manager and search for openxml. And install DocumentFormat.OpenXml
You want to look at the patch() function, and sneak in points for the start and end of the horizontal line:
x = 0:.1:2*pi;
y = sin(x)+rand(size(x))/2;
x2 = [0 x 2*pi];
y2 = [.1 y .1];
patch(x2, y2, [.8 .8 .1]);
If you only want the filled in area for a part of the data, you'll need to truncate the x and y vectors to only include the points you need.
Starting with Node.js 11, the url.parse and other methods of the Legacy URL API were deprecated (only in the documentation, at first) in favour of the standardized WHATWG URL API. The new API does not offer parsing the query string into an object. That can be achieved using tthe querystring.parse method:
// Load modules to create an http server, parse a URL and parse a URL query.
const http = require('http');
const { URL } = require('url');
const { parse: parseQuery } = require('querystring');
// Provide the origin for relative URLs sent to Node.js requests.
const serverOrigin = 'http://localhost:8000';
// Configure our HTTP server to respond to all requests with a greeting.
const server = http.createServer((request, response) => {
// Parse the request URL. Relative URLs require an origin explicitly.
const url = new URL(request.url, serverOrigin);
// Parse the URL query. The leading '?' has to be removed before this.
const query = parseQuery(url.search.substr(1));
response.writeHead(200, { 'Content-Type': 'text/plain' });
response.end(`Hello, ${query.name}!\n`);
});
// Listen on port 8000, IP defaults to 127.0.0.1.
server.listen(8000);
// Print a friendly message on the terminal.
console.log(`Server running at ${serverOrigin}/`);
If you run the script above, you can test the server response like this, for example:
curl -q http://localhost:8000/status?name=ryan
Hello, ryan!
I wrote a jQuery plugin for doing this. By default it checks the current URL (because that's already loaded once from the Web) or you can specify a URL to use as an argument. Always doing a request to Google isn't the best idea because it's blocked in different countries at different times. Also you might be at the mercy of what the connection across a particular ocean/weather front/political climate might be like that day.
Maybe you can try the following without XPath
from simplified_scrapy.simplified_doc import SimplifiedDoc
html = '''
<html>
<body>
<div>
<h1>Example Domain</h1>
<p>This domain is for use in illustrative examples in documents. You may use this
domain in literature without prior coordination or asking for permission.</p>
<p><a href="https://www.iana.org/domains/example">More information...</a></p>
</div>
</body>
</html>
'''
# What XPath can do, so can it
doc = SimplifiedDoc(html)
# The result is the same as doc.getElementByTag('body').getElementByTag('div').getElementByTag('h1').text
print (doc.body.div.h1.text)
print (doc.div.h1.text)
print (doc.h1.text) # Shorter paths will be faster
print (doc.div.getChildren())
print (doc.div.getChildren('p'))
A common error that is the cause of this is when you add
@Model SampleModel
at the top of the page instead of
@model SampleModel
Two use cases where threadlocal variable can be used -
1- When we have a requirement to associate state with a thread (e.g., a user ID or Transaction ID). That usually happens with a web application that every request going to a servlet has a unique transactionID associated with it.
// This class will provide a thread local variable which
// will provide a unique ID for each thread
class ThreadId {
// Atomic integer containing the next thread ID to be assigned
private static final AtomicInteger nextId = new AtomicInteger(0);
// Thread local variable containing each thread's ID
private static final ThreadLocal<Integer> threadId =
ThreadLocal.<Integer>withInitial(()-> {return nextId.getAndIncrement();});
// Returns the current thread's unique ID, assigning it if necessary
public static int get() {
return threadId.get();
}
}
Note that here the method withInitial is implemented using lambda expression.
2- Another use case is when we want to have a thread safe instance and we don't want to use synchronization as the performance cost with synchronization is more. One such case is when SimpleDateFormat is used. Since SimpleDateFormat is not thread safe so we have to provide mechanism to make it thread safe.
public class ThreadLocalDemo1 implements Runnable {
// threadlocal variable is created
private static final ThreadLocal<SimpleDateFormat> dateFormat = new ThreadLocal<SimpleDateFormat>(){
@Override
protected SimpleDateFormat initialValue(){
System.out.println("Initializing SimpleDateFormat for - " + Thread.currentThread().getName() );
return new SimpleDateFormat("dd/MM/yyyy");
}
};
public static void main(String[] args) {
ThreadLocalDemo1 td = new ThreadLocalDemo1();
// Two threads are created
Thread t1 = new Thread(td, "Thread-1");
Thread t2 = new Thread(td, "Thread-2");
t1.start();
t2.start();
}
@Override
public void run() {
System.out.println("Thread run execution started for " + Thread.currentThread().getName());
System.out.println("Date formatter pattern is " + dateFormat.get().toPattern());
System.out.println("Formatted date is " + dateFormat.get().format(new Date()));
}
}
Your problem is that you are naming your component class Date
. When you call new Date()
within your class, it won't create an instance of the Date
you expect it to create (which is likely this Date
)- it will try to create an instance of your component class. Then the constructor will try to create another instance, and another instance, and another instance... Until you run out of stack space and get the error you're seeing.
If you want to use Date
within your class, try naming your class something different such as Calendar
or DateComponent
.
The reason for this is how JavaScript deals with name scope: Whenever you create a new named entity, if there is already an entity with that name in scope, that name will stop referring to the previous entity and start referring to your new entity. So if you use the name Date
within a class named Date
, the name Date
will refer to that class and not to any object named Date
which existed before the class definition started.
You need to click Log Navigator icon (far right in left sidebar). Then choose your Debug/Run session in left sidebar, and you will have console in editor area.
Try this query:
DECLARE @table_name SYSNAME
SELECT @table_name = 'dbo.test_table'
DECLARE
@object_name SYSNAME
, @object_id INT
SELECT
@object_name = '[' + s.name + '].[' + o.name + ']'
, @object_id = o.[object_id]
FROM sys.objects o WITH (NOWAIT)
JOIN sys.schemas s WITH (NOWAIT) ON o.[schema_id] = s.[schema_id]
WHERE s.name + '.' + o.name = @table_name
AND o.[type] = 'U'
AND o.is_ms_shipped = 0
DECLARE @SQL NVARCHAR(MAX) = ''
;WITH index_column AS
(
SELECT
ic.[object_id]
, ic.index_id
, ic.is_descending_key
, ic.is_included_column
, c.name
FROM sys.index_columns ic WITH (NOWAIT)
JOIN sys.columns c WITH (NOWAIT) ON ic.[object_id] = c.[object_id] AND ic.column_id = c.column_id
WHERE ic.[object_id] = @object_id
)
SELECT @SQL = 'CREATE TABLE ' + @object_name + CHAR(13) + '(' + CHAR(13) + STUFF((
SELECT CHAR(9) + ', [' + c.name + '] ' +
CASE WHEN c.is_computed = 1
THEN 'AS ' + cc.[definition]
ELSE UPPER(tp.name) +
CASE WHEN tp.name IN ('varchar', 'char', 'varbinary', 'binary', 'text')
THEN '(' + CASE WHEN c.max_length = -1 THEN 'MAX' ELSE CAST(c.max_length AS VARCHAR(5)) END + ')'
WHEN tp.name IN ('nvarchar', 'nchar', 'ntext')
THEN '(' + CASE WHEN c.max_length = -1 THEN 'MAX' ELSE CAST(c.max_length / 2 AS VARCHAR(5)) END + ')'
WHEN tp.name IN ('datetime2', 'time2', 'datetimeoffset')
THEN '(' + CAST(c.scale AS VARCHAR(5)) + ')'
WHEN tp.name = 'decimal'
THEN '(' + CAST(c.[precision] AS VARCHAR(5)) + ',' + CAST(c.scale AS VARCHAR(5)) + ')'
ELSE ''
END +
CASE WHEN c.collation_name IS NOT NULL THEN ' COLLATE ' + c.collation_name ELSE '' END +
CASE WHEN c.is_nullable = 1 THEN ' NULL' ELSE ' NOT NULL' END +
CASE WHEN dc.[definition] IS NOT NULL THEN ' DEFAULT' + dc.[definition] ELSE '' END +
CASE WHEN ic.is_identity = 1 THEN ' IDENTITY(' + CAST(ISNULL(ic.seed_value, '0') AS CHAR(1)) + ',' + CAST(ISNULL(ic.increment_value, '1') AS CHAR(1)) + ')' ELSE '' END
END + CHAR(13)
FROM sys.columns c WITH (NOWAIT)
JOIN sys.types tp WITH (NOWAIT) ON c.user_type_id = tp.user_type_id
LEFT JOIN sys.computed_columns cc WITH (NOWAIT) ON c.[object_id] = cc.[object_id] AND c.column_id = cc.column_id
LEFT JOIN sys.default_constraints dc WITH (NOWAIT) ON c.default_object_id != 0 AND c.[object_id] = dc.parent_object_id AND c.column_id = dc.parent_column_id
LEFT JOIN sys.identity_columns ic WITH (NOWAIT) ON c.is_identity = 1 AND c.[object_id] = ic.[object_id] AND c.column_id = ic.column_id
WHERE c.[object_id] = @object_id
ORDER BY c.column_id
FOR XML PATH(''), TYPE).value('.', 'NVARCHAR(MAX)'), 1, 2, CHAR(9) + ' ')
+ ISNULL((SELECT CHAR(9) + ', CONSTRAINT [' + k.name + '] PRIMARY KEY (' +
(SELECT STUFF((
SELECT ', [' + c.name + '] ' + CASE WHEN ic.is_descending_key = 1 THEN 'DESC' ELSE 'ASC' END
FROM sys.index_columns ic WITH (NOWAIT)
JOIN sys.columns c WITH (NOWAIT) ON c.[object_id] = ic.[object_id] AND c.column_id = ic.column_id
WHERE ic.is_included_column = 0
AND ic.[object_id] = k.parent_object_id
AND ic.index_id = k.unique_index_id
FOR XML PATH(N''), TYPE).value('.', 'NVARCHAR(MAX)'), 1, 2, ''))
+ ')' + CHAR(13)
FROM sys.key_constraints k WITH (NOWAIT)
WHERE k.parent_object_id = @object_id
AND k.[type] = 'PK'), '') + ')' + CHAR(13)
PRINT @SQL
Output:
CREATE TABLE [dbo].[test_table]
(
[WorkOutID] BIGINT NOT NULL IDENTITY(1,1)
, [DateOut] DATETIME NOT NULL
, [EmployeeID] INT NOT NULL
, [IsMainWorkPlace] BIT NOT NULL DEFAULT((1))
, [WorkPlaceUID] UNIQUEIDENTIFIER NULL
, [WorkShiftCD] NVARCHAR(10) COLLATE Cyrillic_General_CI_AS NULL
, [CategoryID] INT NULL
, CONSTRAINT [PK_WorkOut] PRIMARY KEY ([WorkOutID] ASC)
)
Also read this:
Initially starting with a pyspark dataframes - I got type conversion errors (when converting to pandas df's and then appending to csv) given the schema/column types in my pyspark dataframes
Solved the problem by forcing all columns in each df to be of type string and then appending this to csv as follows:
with open('testAppend.csv', 'a') as f:
df2.toPandas().astype(str).to_csv(f, header=False)
Take a look at Twitter's:
http://twitter.com/crossdomain.xml
<?xml version="1.0" encoding="UTF-8"?>
<cross-domain-policy xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://www.adobe.com/xml/schemas/PolicyFile.xsd">
<allow-access-from domain="twitter.com" />
<allow-access-from domain="api.twitter.com" />
<allow-access-from domain="search.twitter.com" />
<allow-access-from domain="static.twitter.com" />
<site-control permitted-cross-domain-policies="master-only"/>
<allow-http-request-headers-from domain="*.twitter.com" headers="*" secure="true"/>
</cross-domain-policy>
$rs = $db->Insert('register',"'$fn','$ln','$email','$pass','$city','$mo','$fil'","'f_name','l_name=','email','password','city','contact','image'");
You can fix this by passing parameters rather than relying on Globals
def function(Var1, Var2):
if Var2 == 0 and Var1 > 0:
print("Result One")
elif Var2 == 1 and Var1 > 0:
print("Result Two")
elif Var1 < 1:
print("Result Three")
return Var1 - 1
function(1, 1)
So, your real question is: "How can JavaScript save to a local file?"
Take a look at http://www.tiddlywiki.com/
They save their HTML page locally after you have "changed" it internally.
[ UPDATE 2016.01.31 ]
TiddlyWiki original version saved directly. It was quite nice, and saved to a configurable backup directory with the timestamp as part of the backup filename.
TiddlyWiki current version just downloads it as any file download. You need to do your own backup management. :(
[ END OF UPDATE
The trick is, you have to open the page as file:// not as http:// to be able to save locally.
The security on your browser will not let you save to _someone_else's_ local system, only to your own, and even then it isn't trivial.
-Jesse
Just you'll have to add the required active
-class with required color code.
Ex: ng-class="{'active': currentNavSelected}" ng-click="setNav"
Although John Leidegren keeps shooting down the idea, Brian is correct. I've just got it working in Visual Studio.
To be clear a WPF application does not create a Console window by default.
You have to create a WPF Application and then change the OutputType to "Console Application". When you run the project you will see a console window with your WPF window in front of it.
It doesn't look very pretty, but I found it helpful as I wanted my app to be run from the command line with feedback in there, and then for certain command options I would display the WPF window.
With Winforms you can use Form.BackColor to do this.
From within the Form's code:
BackColor = Color.LightPink;
If you mean a WPF Window you can use the Background property.
From within the Window's code:
Background = Brushes.LightPink;
It depends if you know the given variable Type. If you expect it to be an Object than you could check if myVar is an empty Object like this:
public isEmpty(myVar): boolean {
return (myVar && (Object.keys(myVar).length === 0));
}
Otherwise: if (!myVar) {}, should do the job
Another Alternative for the command line that is easier than fighting with quotation marks is to put the json into a file, and use the @ prefix of curl parameters, e.g. with the following in json.txt:
{ "syncheader" : {
"servertimesync" : "20131126121749",
"deviceid" : "testDevice"
}
}
then in my case I issue:
curl localhost:9000/sync -H "Content-type:application/json" -X POST -d @json.txt
Keeps the json more readable too.
Necromancing.
I assume when somebody lands here, he needs a foreign key to column in a table that contains non-unique keys.
The problem is, that if you have that problem, the database-schema is denormalized.
You're for example keeping rooms in a table, with a room-uid primary key, a DateFrom and a DateTo field, and another uid, here RM_ApertureID to keep track of the same room, and a soft-delete field, like RM_Status, where 99 means 'deleted', and <> 99 means 'active'.
So when you create the first room, you insert RM_UID and RM_ApertureID as the same value as RM_UID. Then, when you terminate the room to a date, and re-establish it with a new date range, RM_UID is newid(), and the RM_ApertureID from the previous entry becomes the new RM_ApertureID.
So, if that's the case, RM_ApertureID is a non-unique field, and so you can't set a foreign-key in another table.
And there is no way to set a foreign key to a non-unique column/index, e.g. in T_ZO_REM_AP_Raum_Reinigung (WHERE RM_UID is actually RM_ApertureID).
But to prohibit invalid values, you need to set a foreign key, otherwise, data-garbage is the result sooner rather than later...
Now what you can do in this case (short of rewritting the entire application) is inserting a CHECK-constraint, with a scalar function checking the presence of the key:
IF EXISTS (SELECT * FROM sys.check_constraints WHERE object_id = OBJECT_ID(N'[dbo].[Check_RM_ApertureIDisValid_T_ZO_REM_AP_Raum_Reinigung]') AND parent_object_id = OBJECT_ID(N'[dbo].[T_ZO_REM_AP_Raum_Reinigung]'))
ALTER TABLE dbo.T_ZO_REM_AP_Raum_Reinigung DROP CONSTRAINT [Check_RM_ApertureIDisValid_T_ZO_REM_AP_Raum_Reinigung]
GO
IF EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[fu_Constaint_ValidRmApertureId]') AND type in (N'FN', N'IF', N'TF', N'FS', N'FT'))
DROP FUNCTION [dbo].[fu_Constaint_ValidRmApertureId]
GO
CREATE FUNCTION [dbo].[fu_Constaint_ValidRmApertureId](
@in_RM_ApertureID uniqueidentifier
,@in_DatumVon AS datetime
,@in_DatumBis AS datetime
,@in_Status AS integer
)
RETURNS bit
AS
BEGIN
DECLARE @bNoCheckForThisCustomer AS bit
DECLARE @bIsInvalidValue AS bit
SET @bNoCheckForThisCustomer = 'false'
SET @bIsInvalidValue = 'false'
IF @in_Status = 99
RETURN 'false'
IF @in_DatumVon > @in_DatumBis
BEGIN
RETURN 'true'
END
IF @bNoCheckForThisCustomer = 'true'
RETURN @bIsInvalidValue
IF NOT EXISTS
(
SELECT
T_Raum.RM_UID
,T_Raum.RM_Status
,T_Raum.RM_DatumVon
,T_Raum.RM_DatumBis
,T_Raum.RM_ApertureID
FROM T_Raum
WHERE (1=1)
AND T_Raum.RM_ApertureID = @in_RM_ApertureID
AND @in_DatumVon >= T_Raum.RM_DatumVon
AND @in_DatumBis <= T_Raum.RM_DatumBis
AND T_Raum.RM_Status <> 99
)
SET @bIsInvalidValue = 'true' -- IF !
RETURN @bIsInvalidValue
END
GO
IF EXISTS (SELECT * FROM sys.check_constraints WHERE object_id = OBJECT_ID(N'[dbo].[Check_RM_ApertureIDisValid_T_ZO_REM_AP_Raum_Reinigung]') AND parent_object_id = OBJECT_ID(N'[dbo].[T_ZO_REM_AP_Raum_Reinigung]'))
ALTER TABLE dbo.T_ZO_REM_AP_Raum_Reinigung DROP CONSTRAINT [Check_RM_ApertureIDisValid_T_ZO_REM_AP_Raum_Reinigung]
GO
-- ALTER TABLE dbo.T_AP_Kontakte WITH CHECK ADD CONSTRAINT [Check_RM_ApertureIDisValid_T_ZO_REM_AP_Raum_Reinigung]
ALTER TABLE dbo.T_ZO_REM_AP_Raum_Reinigung WITH NOCHECK ADD CONSTRAINT [Check_RM_ApertureIDisValid_T_ZO_REM_AP_Raum_Reinigung]
CHECK
(
NOT
(
dbo.fu_Constaint_ValidRmApertureId(ZO_RMREM_RM_UID, ZO_RMREM_GueltigVon, ZO_RMREM_GueltigBis, ZO_RMREM_Status) = 1
)
)
GO
IF EXISTS (SELECT * FROM sys.check_constraints WHERE object_id = OBJECT_ID(N'[dbo].[Check_RM_ApertureIDisValid_T_ZO_REM_AP_Raum_Reinigung]') AND parent_object_id = OBJECT_ID(N'[dbo].[T_ZO_REM_AP_Raum_Reinigung]'))
ALTER TABLE dbo.T_ZO_REM_AP_Raum_Reinigung CHECK CONSTRAINT [Check_RM_ApertureIDisValid_T_ZO_REM_AP_Raum_Reinigung]
GO
Yes, add the System.Security
assembly, import the System.Security.Cryptography
namespace. Here's a simple example of a symmetric (DES) algorithm encryption:
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
des.GenerateKey();
byte[] key = des.Key; // save this!
ICryptoTransform encryptor = des.CreateEncryptor();
// encrypt
byte[] enc = encryptor.TransformFinalBlock(new byte[] { 1, 2, 3, 4 }, 0, 4);
ICryptoTransform decryptor = des.CreateDecryptor();
// decrypt
byte[] originalAgain = decryptor.TransformFinalBlock(enc, 0, enc.Length);
Debug.Assert(originalAgain[0] == 1);
Freddy's answer helped me a lot to get this working. For the sake of completeness here's how you could implement hashing of the token:
private string ComputeHash(Guid input)
{
byte[] source = input.ToByteArray();
var encoder = new SHA256Managed();
byte[] encoded = encoder.ComputeHash(source);
return Convert.ToBase64String(encoded);
}
In CreateAsync
:
var guid = Guid.NewGuid();
...
_refreshTokens.TryAdd(ComputeHash(guid), refreshTokenTicket);
context.SetToken(guid.ToString());
ReceiveAsync
:
public async Task ReceiveAsync(AuthenticationTokenReceiveContext context)
{
Guid token;
if (Guid.TryParse(context.Token, out token))
{
AuthenticationTicket ticket;
if (_refreshTokens.TryRemove(ComputeHash(token), out ticket))
{
context.SetTicket(ticket);
}
}
}
I find it surprising that no one mentions data
as an object. For me it's the cleanest and easiest way to pass data:
$('form#foo').submit(function () {
$.ajax({
url: 'http://foo.bar/some-ajax-script',
type: 'POST',
dataType: 'json',
data: {
'foo': 'some-foo-value',
'bar': $('#bar').val()
}
}).always(function (response) {
console.log(response);
});
return false;
});
Then, in the backend:
// Example in PHP
$_POST['foo'] // some-foo-value
$_POST['bar'] // value in #bar
The installation of these tools may vary on different OS.
Under Windows, node-sass currently supports VS2015 by default, if you only have VS2013 in your box and meet any error while running the command, you can define the version of VS by adding: --msvs_version=2013. This is noted on the node-sass npm page.
So, the safe command line that works on Windows with VS2013 is: npm install --msvs_version=2013 gulp node-sass gulp-sass
I faced similar issue "CrashLoopBackOff" when I debugged getting pods and logs of pod. Found out that my command arguments are wrong
This is definitely a syntax issue, when it happened to me I discovered I typed
module.export = Component;
instead of module.exports = Component;
Here is a guide to JSZIP to create ZIP files by JavaScript. To download files you need to have filesaver.js, You can include those libraries by:
<script src="https://cdnjs.cloudflare.com/ajax/libs/jszip/3.1.4/jszip.min.js" type="text/javascript"></script>
<script type="text/javascript" src="https://fastcdn.org/FileSaver.js/1.1.20151003/FileSaver.js" ></script>
Now copy this code and this code will download a zip file with a file hello.txt having content Hello World. If everything thing works fine, this will download a file.
<script type="text/javascript">
var zip = new JSZip();
zip.file("Hello.txt", "Hello World\n");
zip.generateAsync({type:"blob"})
.then(function(content) {
// see FileSaver.js
saveAs(content, "file.zip");
});
</script>
Now let's get in to deeper. Create an instance of JSZip.
var zip = new JSZip();
Add a file with a Hello World text:
zip.file("hello.txt", "Hello World\n");
Download the filie with name archive.zip
zip.generateAsync({type:"blob"}).then(function(zip) {
saveAs(zip, "archive.zip");
});
Read More from here: http://www.wapgee.com/story/248/guide-to-create-zip-files-using-javascript-by-using-jszip-library
You should check the parent process name, see The Code Project article about a .NET based solution**.
A non-programmatic way to check:
c:\windows\notepad.exe
)The same can be checked by getting the parent process name.
QMessageBox
includes static methods to quickly ask such questions:
#include <QApplication>
#include <QMessageBox>
int main(int argc, char **argv)
{
QApplication app{argc, argv};
while (QMessageBox::question(nullptr,
qApp->translate("my_app", "Test"),
qApp->translate("my_app", "Are you sure you want to quit?"),
QMessageBox::Yes|QMessageBox::No)
!= QMessageBox::Yes)
// ask again
;
}
If your needs are more complex than provided for by the static methods, you should construct a new QMessageBox
object, and call its exec()
method to show it in its own event loop and obtain the pressed button identifier. For example, we might want to make "No" be the default answer:
#include <QApplication>
#include <QMessageBox>
int main(int argc, char **argv)
{
QApplication app{argc, argv};
auto question = new QMessageBox(QMessageBox::Question,
qApp->translate("my_app", "Test"),
qApp->translate("my_app", "Are you sure you want to quit?"),
QMessageBox::Yes|QMessageBox::No,
nullptr);
question->setDefaultButton(QMessageBox::No);
while (question->exec() != QMessageBox::Yes)
// ask again
;
}
Answering my own question about 2 or something years later here but...
It uses a protocol extension so you can do it without any extra code for all classes.
/*
Prerequisites
-------------
- In IB set the view's class to the type hook up any IBOutlets
- In IB ensure the file's owner is blank
*/
public protocol CreatedFromNib {
static func createFromNib() -> Self?
static func nibName() -> String?
}
extension UIView: CreatedFromNib { }
public extension CreatedFromNib where Self: UIView {
public static func createFromNib() -> Self? {
guard let nibName = nibName() else { return nil }
guard let view = NSBundle.mainBundle().loadNibNamed(nibName, owner: nil, options: nil).last as? Self else { return nil }
return view
}
public static func nibName() -> String? {
guard let n = NSStringFromClass(Self.self).componentsSeparatedByString(".").last else { return nil }
return n
}
}
// Usage:
let myView = MyView().createFromNib()
In the accepted answer the ConcurrentBag is not required. Here's an implementation without it:
var tasks = myCollection.Select(GetData).ToList();
await Task.WhenAll(tasks);
var results = tasks.Select(t => t.Result);
Any of the "// some pre stuff" and "// some post stuff" can go into the GetData implementation (or another method that calls GetData)
Aside from being shorter, there's no use of an "async void" lambda, which is an anti pattern.
I prefer to use numpy files since they're fast and easy to work with. Here's a simple benchmark for saving and loading a dataframe with 1 column of 1million points.
import numpy as np
import pandas as pd
num_dict = {'voltage': np.random.rand(1000000)}
num_df = pd.DataFrame(num_dict)
using ipython's %%timeit
magic function
%%timeit
with open('num.npy', 'wb') as np_file:
np.save(np_file, num_df)
the output is
100 loops, best of 3: 5.97 ms per loop
to load the data back into a dataframe
%%timeit
with open('num.npy', 'rb') as np_file:
data = np.load(np_file)
data_df = pd.DataFrame(data)
the output is
100 loops, best of 3: 5.12 ms per loop
NOT BAD!
There's a problem if you save the numpy file using python 2 and then try opening using python 3 (or vice versa).
Make sure you installed the nuget package Microsoft.AspNet.Identity.Owin
. Then add System.Net.Http
namespace.
It really depends on what you're going for:
#if DEBUG
: The code in here won't even reach the IL on release.[Conditional("DEBUG")]
: This code will reach the IL, however calls to the method will be omitted unless DEBUG is set when the caller is compiled.Personally I use both depending on the situation:
Conditional("DEBUG") Example: I use this so that I don't have to go back and edit my code later during release, but during debugging I want to be sure I didn't make any typos. This function checks that I type a property name correctly when trying to use it in my INotifyPropertyChanged stuff.
[Conditional("DEBUG")]
[DebuggerStepThrough]
protected void VerifyPropertyName(String propertyName)
{
if (TypeDescriptor.GetProperties(this)[propertyName] == null)
Debug.Fail(String.Format("Invalid property name. Type: {0}, Name: {1}",
GetType(), propertyName));
}
You really don't want to create a function using #if DEBUG
unless you are willing to wrap every call to that function with the same #if DEBUG
:
#if DEBUG
public void DoSomething() { }
#endif
public void Foo()
{
#if DEBUG
DoSomething(); //This works, but looks FUGLY
#endif
}
versus:
[Conditional("DEBUG")]
public void DoSomething() { }
public void Foo()
{
DoSomething(); //Code compiles and is cleaner, DoSomething always
//exists, however this is only called during DEBUG.
}
#if DEBUG example: I use this when trying to setup different bindings for WCF communication.
#if DEBUG
public const String ENDPOINT = "Localhost";
#else
public const String ENDPOINT = "BasicHttpBinding";
#endif
In the first example, the code all exists, but is just ignored unless DEBUG is on. In the second example, the const ENDPOINT is set to "Localhost" or "BasicHttpBinding" depending on if DEBUG is set or not.
Update: I am updating this answer to clarify an important and tricky point. If you choose to use the ConditionalAttribute
, keep in mind that calls are omitted during compilation, and not runtime. That is:
MyLibrary.dll
[Conditional("DEBUG")]
public void A()
{
Console.WriteLine("A");
B();
}
[Conditional("DEBUG")]
public void B()
{
Console.WriteLine("B");
}
When the library is compiled against release mode (i.e. no DEBUG symbol), it will forever have the call to B()
from within A()
omitted, even if a call to A()
is included because DEBUG is defined in the calling assembly.
Atomic collections are accessible by $
Recursive collections are not. Rather the [[ ]]
is used
Browse[1]> is.atomic(list())
[1] FALSE
Browse[1]> is.atomic(data.frame())
[1] FALSE
Browse[1]> is.atomic(class(list(foo="bar")))
[1] TRUE
Browse[1]> is.atomic(c(" lang "))
[1] TRUE
R can be funny sometimes
a = list(1,2,3)
b = data.frame(a)
d = rbind("?",c(b))
e = exp(1)
f = list(d)
print(data.frame(c(list(f,e))))
X1 X2 X3 X2.71828182845905
1 ? ? ? 2.718282
2 1 2 3 2.718282
std::unique_ptr has no copy constructor. You create an instance and then ask the std::vector to copy that instance during initialisation.
error: deleted function 'std::unique_ptr<_Tp, _Tp_Deleter>::uniqu
e_ptr(const std::unique_ptr<_Tp, _Tp_Deleter>&) [with _Tp = int, _Tp_D
eleter = std::default_delete<int>, std::unique_ptr<_Tp, _Tp_Deleter> =
std::unique_ptr<int>]'
The class satisfies the requirements of MoveConstructible and MoveAssignable, but not the requirements of either CopyConstructible or CopyAssignable.
The following works with the new emplace calls.
std::vector< std::unique_ptr< int > > vec;
vec.emplace_back( new int( 1984 ) );
See using unique_ptr with standard library containers for further reading.
Take a look at JQuery Promises:
http://api.jquery.com/promise/
http://api.jquery.com/jQuery.when/
http://api.jquery.com/deferred.promise/
Refactor the code:
var dfd = new jQuery.Deferred(); function callBack(data) { dfd.notify(data); } // do the async call. myAsynchronousCall(param1, callBack); function doSomething(data) { // do stuff with data... } $.when(dfd).then(doSomething);
in linux os such as Debian or Ubutu you can simply try this ways, for first time remove phpmyadmin with --purge parameter:
sudo apt-get remove --purge phpmyadmin
then install again
sudo apt-get install phpmyadmin
thats work fine :)
I figured out myself.
cmp
calls ComputeBetasAndNuHat
which returns a list which has objective
as minusloglik
So I can change the function cmp
to get this value.
I always liked going after it directly:
SELECT
DB_NAME( dbid ) AS DatabaseName,
CAST( ( SUM( size ) * 8 ) / ( 1024.0 * 1024.0 ) AS decimal( 10, 2 ) ) AS DbSizeGb
FROM
sys.sysaltfiles
GROUP BY
DB_NAME( dbid )
Stating with Android 6 use ContextCompact
view.setBackgroundColor( ContextCompat.getColor(this, R.color.your_color));
For me it was a missing static
keyword in one of the JUnit annotated methods, e.g.:
@AfterClass
public static void cleanUp() {
// ...
}
Check this out: http://www.tamirgal.com/home/dev.aspx?Item=sharpSsh
SharpSSH is a pure .NET implementation of the SSH2 client protocol suite. It provides an API for communication with SSH servers and can be integrated into any .NET application.
The library is a C# port of the JSch project from JCraft Inc. and is released under BSD style license.
SharpSSH allows you to read/write data and transfer files over SSH channels using an API similar to JSch's API. In addition, it provides some additional wrapper classes which offer even simpler abstraction for SSH communication.
SharpSSH project page at source forge: http://sourceforge.net/projects/sharpssh
Try this:- SELECT Case WHEN COLUMNNAME=0 THEN 'sex'
ELSE WHEN COLUMNNAME=1 THEN 'Female' END AS YOURGRIDCOLUMNNAME FROM YOURTABLENAME
in your query for only true or false column
There's no built in method to do that. You can use the expression:
(date1 > date2 ? date1 : date2)
to find the maximum of the two.
You can write a generic method to calculate Min
or Max
for any type (provided that Comparer<T>.Default
is set appropriately):
public static T Max<T>(T first, T second) {
if (Comparer<T>.Default.Compare(first, second) > 0)
return first;
return second;
}
You can use LINQ too:
new[]{date1, date2, date3}.Max()
First of all, GetAuthorizationGroups() is a great function but unfortunately has 2 disadvantages:
Therefore, I've wrote a small function to replace GetAuthorizationGroups() with better performance and error-safe. It does only 1 LDAP call with a query using indexed fields. It can be easily extended if you need more properties than only the group names ("cn" property).
// Usage: GetAdGroupsForUser2("domain\user") or GetAdGroupsForUser2("user","domain")
public static List<string> GetAdGroupsForUser2(string userName, string domainName = null)
{
var result = new List<string>();
if (userName.Contains('\\') || userName.Contains('/'))
{
domainName = userName.Split(new char[] { '\\', '/' })[0];
userName = userName.Split(new char[] { '\\', '/' })[1];
}
using (PrincipalContext domainContext = new PrincipalContext(ContextType.Domain, domainName))
using (UserPrincipal user = UserPrincipal.FindByIdentity(domainContext, userName))
using (var searcher = new DirectorySearcher(new DirectoryEntry("LDAP://" + domainContext.Name)))
{
searcher.Filter = String.Format("(&(objectCategory=group)(member={0}))", user.DistinguishedName);
searcher.SearchScope = SearchScope.Subtree;
searcher.PropertiesToLoad.Add("cn");
foreach (SearchResult entry in searcher.FindAll())
if (entry.Properties.Contains("cn"))
result.Add(entry.Properties["cn"][0].ToString());
}
return result;
}
Here is what I'd use for all links on a page...
document.body.addEventListener(function(event) {
if (event.target.href && event.target.target != "_blank") {
event.preventDefault();
window.location = this.href;
}
});
If you're using jQuery or Zepto...
$("body").on("click", "a", function(event) {
event.target.target != "_blank" && (window.location = event.target.href);
});
Also check it
jQuery: Customizable layout using drag and drop (examples)
You can use str.contains
alone with a regex pattern using OR (|)
:
s[s.str.contains('og|at')]
Or you could add the series to a dataframe
then use str.contains
:
df = pd.DataFrame(s)
df[s.str.contains('og|at')]
Output:
0 cat
1 hat
2 dog
3 fog
This is my favourite way of decoding HTML characters. The advantage of using this code is that tags are also preserved.
function decodeHtml(html) {
var txt = document.createElement("textarea");
txt.innerHTML = html;
return txt.value;
}
Example: http://jsfiddle.net/k65s3/
Input:
Entity: Bad attempt at XSS:<script>alert('new\nline?')</script><br>
Output:
Entity: Bad attempt at XSS:<script>alert('new\nline?')</script><br>
Here's some possible ways to achieve this task:
def attempt1(string):
return "".join([v for v in string if v not in ("a", "e", "i", "o", "u")])
def attempt2(string):
for v in ("a", "e", "i", "o", "u"):
string = string.replace(v, "")
return string
def attempt3(string):
import re
for v in ("a", "e", "i", "o", "u"):
string = re.sub(v, "", string)
return string
def attempt4(string):
return string.replace("a", "").replace("e", "").replace("i", "").replace("o", "").replace("u", "")
for attempt in [attempt1, attempt2, attempt3, attempt4]:
print(attempt("murcielago"))
PS: Instead using " ?.!/;:" the examples use the vowels... and yeah, "murcielago" is the Spanish word to say bat... funny word as it contains all the vowels :)
PS2: If you're interested on performance you could measure these attempts with a simple code like:
import timeit
K = 1000000
for i in range(1,5):
t = timeit.Timer(
f"attempt{i}('murcielago')",
setup=f"from __main__ import attempt{i}"
).repeat(1, K)
print(f"attempt{i}",min(t))
In my box you'd get:
attempt1 2.2334518376057244
attempt2 1.8806643818474513
attempt3 7.214925774955572
attempt4 1.7271184513757465
So it seems attempt4 is the fastest one for this particular input.
C++11 has some portable timer stuff. Check out sleep_for.
to upload a file using curl in Windows I found that the path requires escaped double quotes
e.g.
curl -v -F 'upload=@\"C:/myfile.txt\"' URL
Old question, but there's an easier way.
sns.pointplot(x=x_col,y=y_col,data=df_1,color='blue')
sns.pointplot(x=x_col,y=y_col,data=df_2,color='green')
sns.pointplot(x=x_col,y=y_col,data=df_3,color='red')
plt.legend(labels=['legendEntry1', 'legendEntry2', 'legendEntry3'])
This lets you add the plots sequentially, and not have to worry about any of the matplotlib crap besides defining the legend items.
I created a function that might help. All it does is imitate the alert but put an image instead of text.
function alertImage(imgsrc) {
$('.d').css({
'position': 'absolute',
'top': '0',
'left': '50%',
'-webkit-transform': 'translate(-50%, 0)'
});
$('.d').animate({
opacity: 0
}, 0)
$('.d').animate({
opacity: 1,
top: "10px"
}, 250)
$('.d').append('An embedded page on this page says')
$('.d').append('<br><img src="' + imgsrc + '">')
$('.b').css({
'position':'absolute',
'-webkit-transform': 'translate(-100%, -100%)',
'top':'100%',
'left':'100%',
'display':'inline',
'background-color':'#598cbd',
'border-radius':'4px',
'color':'white',
'border':'none',
'width':'66',
'height':'33'
})
}
<script type="text/javascript" src="https://code.jquery.com/jquery-latest.min.js"></script>
<div class="d"><button onclick="$('.d').html('')" class="b">OK</button></div>
.d{
font-size: 17px;
font-family: sans-serif;
}
.b{
display: none;
}
open
is a new access level in Swift 3, introduced with the implementation
of
It is available with the Swift 3 snapshot from August 7, 2016, and with Xcode 8 beta 6.
In short:
open
class is accessible and subclassable outside of the
defining module. An open
class member is accessible and
overridable outside of the defining module.public
class is accessible but not subclassable outside of the
defining module. A public
class member is accessible but
not overridable outside of the defining module.So open
is what public
used to be in previous
Swift releases and the access of public
has been restricted.
Or, as Chris Lattner puts it in
SE-0177: Allow distinguishing between public access and public overridability:
“open” is now simply “more public than public”, providing a very simple and clean model.
In your example, open var hashValue
is a property which is accessible and can be overridden in NSObject
subclasses.
For more examples and details, have a look at SE-0117.
I use the following code:
$("#myImage").attr("src","img/spinner.gif");
var img = new Image();
$(img).load(function() {
$("#myImage").attr("src",img.src);
});
img.src = "http://example.com/imageToPreload.jpg";
<div style="float: left;">Left Div</div>
<div style="float: right;">Right Div</div>
See IdentityModel.EpochTimeExtensions
public static class EpochTimeExtensions
{
/// <summary>
/// Converts the given date value to epoch time.
/// </summary>
public static long ToEpochTime(this DateTime dateTime)
{
var date = dateTime.ToUniversalTime();
var ticks = date.Ticks - new DateTime(1970, 1, 1, 0, 0, 0, 0, DateTimeKind.Utc).Ticks;
var ts = ticks / TimeSpan.TicksPerSecond;
return ts;
}
/// <summary>
/// Converts the given date value to epoch time.
/// </summary>
public static long ToEpochTime(this DateTimeOffset dateTime)
{
var date = dateTime.ToUniversalTime();
var ticks = date.Ticks - new DateTimeOffset(1970, 1, 1, 0, 0, 0, TimeSpan.Zero).Ticks;
var ts = ticks / TimeSpan.TicksPerSecond;
return ts;
}
/// <summary>
/// Converts the given epoch time to a <see cref="DateTime"/> with <see cref="DateTimeKind.Utc"/> kind.
/// </summary>
public static DateTime ToDateTimeFromEpoch(this long intDate)
{
var timeInTicks = intDate * TimeSpan.TicksPerSecond;
return new DateTime(1970, 1, 1, 0, 0, 0, 0, DateTimeKind.Utc).AddTicks(timeInTicks);
}
/// <summary>
/// Converts the given epoch time to a UTC <see cref="DateTimeOffset"/>.
/// </summary>
public static DateTimeOffset ToDateTimeOffsetFromEpoch(this long intDate)
{
var timeInTicks = intDate * TimeSpan.TicksPerSecond;
return new DateTimeOffset(1970, 1, 1, 0, 0, 0, TimeSpan.Zero).AddTicks(timeInTicks);
}
}
Try:
SELECT neededfield, CONCAT(firstname, ' ', lastname) as firstlast
FROM users
WHERE CONCAT(firstname, ' ', lastname) = "Bob Michael Jones"
Your alias firstlast is not available in the where clause of the query unless you do the query as a sub-select.
You can do it in a few ways.All the ways are technically the same but using Lambda would simplify some of the code. Lets say we initialize a List first with String, call it persons.
List<String> persons = new ArrayList<String>(){{add("a"); add("b"); add("c");}};
Stream<String> stream = persons.stream();
Now you can use either of the following ways.
Using the Lambda Expresiion to create a new StringArray with defined size.
String[] stringArray = stream.toArray(size->new String[size]);
Using the method reference directly.
String[] stringArray = stream.toArray(String[]::new);
Is there a way to get a list of all the keys in a Go language map?
ks := reflect.ValueOf(m).MapKeys()
how do I iterate over all the keys?
Use the accepted answer:
for k, _ := range m { ... }
Running Node and Apache on one server is trivial as they don't conflict. NodeJS is just a way to execute JavaScript server side. The real dilemma comes from accessing both Node and Apache from outside. As I see it you have two choices:
Set up Apache to proxy all matching requests to NodeJS, which will do the file uploading and whatever else in node.
Have Apache and Node on different IP:port combinations (if your server has two IPs, then one can be bound to your node listener, the other to Apache).
I'm also beginning to suspect that this might not be what you are actually looking for. If your end goal is for you to write your application logic in Nodejs and some "file handling" part that you off-load to a contractor, then its really a choice of language, not a web server.
Simple code for underscore.py
package fan
from underscore import _
_.flatten([[1, 2, 3], [4, 5, 6], [7], [8, 9]])
# [1, 2, 3, 4, 5, 6, 7, 8, 9]
It solves all flatten problems (none list item or complex nesting)
from underscore import _
# 1 is none list item
# [2, [3]] is complex nesting
_.flatten([1, [2, [3]], [4, 5, 6], [7], [8, 9]])
# [1, 2, 3, 4, 5, 6, 7, 8, 9]
You can install underscore.py
with pip
pip install underscore.py
If you are using post as a model (without dependency injection), you can also do:
$posts = Post::orderBy('id', 'DESC')->get();
You get that error because you don't have the public key of the person who signed the message.
gpg
should have given you a message containing the ID of the key that was used to sign it. Obtain the public key from the person who encrypted the file and import it into your keyring (gpg2 --import key.asc
); you should be able to verify the signature after that.
If the sender submitted its public key to a keyserver (for instance, https://pgp.mit.edu/), then you may be able to import the key directly from the keyserver:
gpg2 --keyserver https://pgp.mit.edu/ --search-keys <sender_name_or_address>
You can also do this:
<ul id="example">
<li>First</li>
<li>Second</li>
<li>Third</li>
<li>Fourth</li>
</ul>
// possibility 1
$('#example li:last').val();
// possibility 2
$('#example').children().last()
// possibility 3
$('#example li:last-child').val();
None of the above worked for me.
But this did:
{{ (num1_str * 1) + (num2_str * 1) }}
You cannot do it. C compiler cannot do such a complex thing on stack.
You have to use heap and dynamic allocation.
What you really need to do:
Use *access(boardAux, x, y, size) = 42 to interact with the matrix.
If anyone is seeking a VB option, this was based on Pavel's answer:
Public Shared Function ToBase(base10 As Long, Optional baseChars As String = "0123456789ABCDEFGHIJKLMNOPQRTSUVWXYZ") As String
If baseChars.Length < 2 Then Throw New ArgumentException("baseChars must be at least 2 chars long")
If base10 = 0 Then Return baseChars(0)
Dim isNegative = base10 < 0
Dim radix = baseChars.Length
Dim index As Integer = 64 'because it's how long a string will be if the basechars are 2 long (binary)
Dim chars(index) As Char '65 chars, 64 from above plus one for sign if it's negative
base10 = Math.Abs(base10)
While base10 > 0
chars(index) = baseChars(base10 Mod radix)
base10 \= radix
index -= 1
End While
If isNegative Then
chars(index) = "-"c
index -= 1
End If
Return New String(chars, index + 1, UBound(chars) - index)
End Function
With jQuery, never use inline onclick
javascript. Keep it unobtrusive. Do this instead, and remove the onclick
completely.
Also, note the use of the :checked
pseudo selector in the last line. The reason for this is because once the page is loaded, the html and the actual state of the form element can be different. Open a web inspector and you can click on the other radio button and the HTML will still show the first one is checked. The :checked
selector instead filters elements that are actually checked, regardless of what the html started as.
$('button').click(function() {
alert($('input[name="myname"][value="b"]').length);
$('input[name="myname"][value="b"]').attr('checked','checked');
$('#b').attr('checked',true);
alert($('input[name="myname"]:checked').val());
});
var arr = ['a','b',1];
var results = arr.filter(function(item){
if(typeof item ==='string'){return item;}
});
Perfectly fine.
You can't instantiate abstract classes.. but abstract classes can be used to house common implementations for m1() and m3().
So if m2() implementation is different for each implementation but m1 and m3 are not. You could create different concrete IAnything implementations with just the different m2 implementation and derive from AbstractThing -- honoring the DRY principle. Validating if the interface is completely implemented for an abstract class is futile..
Update: Interestingly, I find that C# enforces this as a compile error. You are forced to copy the method signatures and prefix them with 'abstract public' in the abstract base class in this scenario.. (something new everyday:)